1 /* GDK - The GIMP Drawing Kit
2 * Copyright (C) 1995-2007 Peter Mattis, Spencer Kimball,
3 * Josh MacDonald, Ryan Lortie
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this library; if not, write to the
17 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 * Boston, MA 02111-1307, USA.
22 * Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
23 * file for a list of people on the GTK+ Team. See the ChangeLog
24 * files for a list of changes. These files are distributed with
25 * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
30 #include <cairo-gobject.h>
32 #include "gdkwindow.h"
34 #include "gdkrectangle.h"
35 #include "gdkinternals.h"
37 #include "gdkscreenprivate.h"
38 #include "gdkdisplayprivate.h"
39 #include "gdkdeviceprivate.h"
40 #include "gdkvisualprivate.h"
41 #include "gdkmarshalers.h"
42 #include "gdkwindowimpl.h"
46 #undef DEBUG_WINDOW_PRINTING
51 * @Short_description: Onscreen display areas in the target window system
54 * A #GdkWindow is a (usually) rectangular region on the screen.
55 * It's a low-level object, used to implement high-level objects such as
56 * #GtkWidget and #GtkWindow on the GTK+ level. A #GtkWindow is a toplevel
57 * window, the thing a user might think of as a "window" with a titlebar and
58 * so on; a #GtkWindow may contain many #GdkWindows. For example, each
59 * #GtkButton has a #GdkWindow associated with it.
61 * <refsect2 id="COMPOSITED-WINDOWS">
62 * <title>Composited Windows</title>
64 * Normally, the windowing system takes care of rendering the contents of a
65 * child window onto its parent window. This mechanism can be intercepted by
66 * calling gdk_window_set_composited() on the child window. For a
67 * <firstterm>composited</firstterm> window it is the responsibility of the
68 * application to render the window contents at the right spot.
70 * <example id="composited-window-example">
71 * <title>Composited windows</title>
73 * <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" parse="text" href="../../../../examples/gdk/composited-window-example.c"><xi:fallback>FIXME: MISSING XINCLUDE CONTENT</xi:fallback></xi:include>
74 * </programlisting></example>
76 * In the example <xref linkend="composited-window-example"/>, a button is
77 * placed inside of an event box inside of a window. The event box is set as
78 * composited and therefore is no longer automatically drawn to the screen.
80 * When the contents of the event box change, an expose event is generated on
81 * its parent window (which, in this case, belongs to the toplevel #GtkWindow).
82 * The expose handler for this widget is responsible for merging the changes
83 * back on the screen in the way that it wishes.
85 * In our case, we merge the contents with a 50% transparency. We also set the
86 * background colour of the window to red. The effect is that the background
87 * shows through the button.
90 * <refsect2 id="OFFSCREEN-WINDOWS">
91 * <title>Offscreen Windows</title>
93 * Offscreen windows are more general than composited windows, since they allow
94 * not only to modify the rendering of the child window onto its parent, but
95 * also to apply coordinate transformations.
97 * To integrate an offscreen window into a window hierarchy, one has to call
98 * gdk_offscreen_window_set_embedder() and handle a number of signals. The
99 * #GdkWindow::pick-embedded-child signal on the embedder window is used to
100 * select an offscreen child at given coordinates, and the
101 * #GdkWindow::to-embedder and #GdkWindow::from-embedder signals on the
102 * offscreen window are used to translate coordinates between the embedder and
103 * the offscreen window.
105 * For rendering an offscreen window onto its embedder, the contents of the
106 * offscreen window are available as a surface, via
107 * gdk_offscreen_window_get_surface().
113 /* Historically a GdkWindow always matches a platform native window,
114 * be it a toplevel window or a child window. In this setup the
115 * GdkWindow (and other GdkDrawables) were platform independent classes,
116 * and the actual platform specific implementation was in a delegate
117 * object availible as "impl" in the window object.
119 * With the addition of client side windows and offscreen windows this
120 * changes a bit. The application-visible GdkWindow object behaves as
121 * it did before, but not all such windows now have a corresponding native
122 * window. Instead windows that are "client side" are emulated by the gdk
123 * code such that clipping, drawing, moving, events etc work as expected.
125 * For GdkWindows that have a native window the "impl" object is the
126 * same as before. However, for all client side windows the impl object
127 * is shared with its parent (i.e. all client windows descendants of one
128 * native window has the same impl.
130 * Additionally there is a new type of platform independent impl object,
131 * GdkOffscreenWindow. All windows of type GDK_WINDOW_OFFSCREEN get an impl
132 * of this type (while their children are generally GDK_WINDOW_CHILD virtual
133 * windows). Such windows work by allocating a #cairo_surface_t as the backing
134 * store for drawing operations, which is resized with the window.
136 * GdkWindows have a pointer to the "impl window" they are in, i.e.
137 * the topmost GdkWindow which have the same "impl" value. This is stored
138 * in impl_window, which is different from the window itself only for client
140 * All GdkWindows (native or not) track the position of the window in the parent
141 * (x, y), the size of the window (width, height), the position of the window
142 * with respect to the impl window (abs_x, abs_y). We also track the clip
143 * region of the window wrt parent windows and siblings, in window-relative
144 * coordinates with and without child windows included (clip_region,
145 * clip_region_with_children).
147 * All toplevel windows are native windows, but also child windows can be
148 * native (although not children of offscreens). We always listen to
149 * a basic set of events (see get_native_event_mask) for these windows
150 * so that we can emulate events for any client side children.
152 * For native windows we apply the calculated clip region as a window shape
153 * so that eg. client side siblings that overlap the native child properly
154 * draws over the native child window.
156 * In order to minimize flicker and for performance we use a couple of cacheing
157 * tricks. First of all, every time we do a window to window copy area, for instance
158 * when moving a client side window or when scrolling/moving a region in a window
159 * we store this in outstanding_moves instead of applying immediately. We then
160 * delay this move until we really need it (because something depends on being
161 * able to read it), or until we're handing a redraw from an expose/invalidation
162 * (actually we delay it past redraw, but before blitting the double buffer
163 * to the window). This gives us two advantages. First of all it minimizes the time
164 * from the window is moved to the exposes related to that move, secondly it allows
165 * us to be smart about how to do the copy. We combine multiple moves into one (when
166 * possible) and we don't actually do copies to anything that is or will be
167 * invalidated and exposed anyway.
169 * Secondly, we use something called a "implicit paint" during repaint handling.
170 * An implicit paint is similar to a regular paint for the paint stack, but it is
171 * not put on the stack. Instead, it is set on the impl window, and later when
172 * regular gdk_window_begin_paint_region() happen on a window of this impl window
173 * we reuse the surface from the implicit paint. During repaint we create and at the
174 * end flush an implicit paint, which means we can collect all the paints on
175 * multiple client side windows in the same backing store.
178 #define USE_BACKING_STORE /* Appears to work on Win32, too, now. */
180 /* This adds a local value to the GdkVisibilityState enum */
181 #define GDK_VISIBILITY_NOT_VIEWABLE 3
184 PICK_EMBEDDED_CHILD, /* only called if children are embedded */
198 CLEAR_BG_WINCLEARED, /* Clear backgrounds except those that the window system clears */
202 struct _GdkWindowPaint
204 cairo_region_t *region;
205 cairo_surface_t *surface;
206 guint uses_implicit : 1;
212 cairo_region_t *dest_region; /* The destination region */
213 int dx, dy; /* The amount that the source was moved to reach dest_region */
214 } GdkWindowRegionMove;
218 static void gdk_window_drop_cairo_surface (GdkWindow *private);
220 static void gdk_window_free_paint_stack (GdkWindow *window);
222 static void gdk_window_finalize (GObject *object);
224 static void gdk_window_set_property (GObject *object,
228 static void gdk_window_get_property (GObject *object,
233 static void gdk_window_clear_backing_region (GdkWindow *window,
234 cairo_region_t *region);
236 static void recompute_visible_regions (GdkWindow *private,
237 gboolean recalculate_siblings,
238 gboolean recalculate_children);
239 static void gdk_window_flush_outstanding_moves (GdkWindow *window);
240 static void gdk_window_flush_recursive (GdkWindow *window);
241 static void do_move_region_bits_on_impl (GdkWindow *window,
242 cairo_region_t *region, /* In impl window coords */
244 static void gdk_window_invalidate_in_parent (GdkWindow *private);
245 static void move_native_children (GdkWindow *private);
246 static void update_cursor (GdkDisplay *display,
248 static void impl_window_add_update_area (GdkWindow *impl_window,
249 cairo_region_t *region);
250 static void gdk_window_region_move_free (GdkWindowRegionMove *move);
251 static void gdk_window_invalidate_region_full (GdkWindow *window,
252 const cairo_region_t *region,
253 gboolean invalidate_children,
255 static void gdk_window_invalidate_rect_full (GdkWindow *window,
256 const GdkRectangle *rect,
257 gboolean invalidate_children,
260 static guint signals[LAST_SIGNAL] = { 0 };
262 static gpointer parent_class = NULL;
264 static const cairo_user_data_key_t gdk_window_cairo_key;
267 new_region_tag (void)
269 static guint32 tag = 0;
274 G_DEFINE_ABSTRACT_TYPE (GdkWindow, gdk_window, G_TYPE_OBJECT)
277 _gdk_paintable_get_type (void)
279 static GType paintable_type = 0;
283 const GTypeInfo paintable_info =
285 sizeof (GdkPaintableIface), /* class_size */
286 NULL, /* base_init */
287 NULL, /* base_finalize */
290 paintable_type = g_type_register_static (G_TYPE_INTERFACE,
291 g_intern_static_string ("GdkPaintable"),
294 g_type_interface_add_prerequisite (paintable_type, G_TYPE_OBJECT);
297 return paintable_type;
301 gdk_window_init (GdkWindow *window)
303 /* 0-initialization is good for all other fields. */
305 window->window_type = GDK_WINDOW_CHILD;
307 window->state = GDK_WINDOW_STATE_WITHDRAWN;
310 window->toplevel_window_type = -1;
312 window->effective_visibility = GDK_VISIBILITY_NOT_VIEWABLE;
313 window->visibility = GDK_VISIBILITY_FULLY_OBSCURED;
314 /* Default to unobscured since some backends don't send visibility events */
315 window->native_visibility = GDK_VISIBILITY_UNOBSCURED;
317 window->device_cursor = g_hash_table_new_full (NULL, NULL,
318 NULL, g_object_unref);
321 /* Stop and return on the first non-NULL parent */
323 accumulate_get_window (GSignalInvocationHint *ihint,
325 const GValue *handler_return,
328 g_value_copy (handler_return, return_accu);
329 /* Continue while returning NULL */
330 return g_value_get_object (handler_return) == NULL;
334 create_surface_accumulator (GSignalInvocationHint *ihint,
336 const GValue *handler_return,
339 g_value_copy (handler_return, return_accu);
341 /* Stop on the first non-NULL return value */
342 return g_value_get_boxed (handler_return) == NULL;
345 static GQuark quark_pointer_window = 0;
348 gdk_window_class_init (GdkWindowClass *klass)
350 GObjectClass *object_class = G_OBJECT_CLASS (klass);
352 parent_class = g_type_class_peek_parent (klass);
354 object_class->finalize = gdk_window_finalize;
355 object_class->set_property = gdk_window_set_property;
356 object_class->get_property = gdk_window_get_property;
358 klass->create_surface = _gdk_offscreen_window_create_surface;
360 quark_pointer_window = g_quark_from_static_string ("gtk-pointer-window");
368 * The mouse pointer for a #GdkWindow. See gdk_window_set_cursor() and
369 * gdk_window_get_cursor() for details.
373 g_object_class_install_property (object_class,
375 g_param_spec_object ("cursor",
382 * GdkWindow::pick-embedded-child:
383 * @window: the window on which the signal is emitted
384 * @x: x coordinate in the window
385 * @y: y coordinate in the window
387 * The ::pick-embedded-child signal is emitted to find an embedded
388 * child at the given position.
390 * Returns: (transfer none): the #GdkWindow of the embedded child at
395 signals[PICK_EMBEDDED_CHILD] =
396 g_signal_new (g_intern_static_string ("pick-embedded-child"),
397 G_OBJECT_CLASS_TYPE (object_class),
399 G_STRUCT_OFFSET (GdkWindowClass, pick_embedded_child),
400 accumulate_get_window, NULL,
401 _gdk_marshal_OBJECT__DOUBLE_DOUBLE,
408 * GdkWindow::to-embedder:
409 * @window: the offscreen window on which the signal is emitted
410 * @offscreen-x: x coordinate in the offscreen window
411 * @offscreen-y: y coordinate in the offscreen window
412 * @embedder-x: (out) (type double): return location for the x
413 * coordinate in the embedder window
414 * @embedder-y: (out) (type double): return location for the y
415 * coordinate in the embedder window
417 * The ::to-embedder signal is emitted to translate coordinates
418 * in an offscreen window to its embedder.
420 * See also #GtkWindow::from-embedder.
424 signals[TO_EMBEDDER] =
425 g_signal_new (g_intern_static_string ("to-embedder"),
426 G_OBJECT_CLASS_TYPE (object_class),
428 G_STRUCT_OFFSET (GdkWindowClass, to_embedder),
430 _gdk_marshal_VOID__DOUBLE_DOUBLE_POINTER_POINTER,
439 * GdkWindow::from-embedder:
440 * @window: the offscreen window on which the signal is emitted
441 * @embedder-x: x coordinate in the embedder window
442 * @embedder-y: y coordinate in the embedder window
443 * @offscreen-x: (out) (type double): return location for the x
444 * coordinate in the offscreen window
445 * @offscreen-y: (out) (type double): return location for the y
446 * coordinate in the offscreen window
448 * The ::from-embedder signal is emitted to translate coordinates
449 * in the embedder of an offscreen window to the offscreen window.
451 * See also #GtkWindow::to-embedder.
455 signals[FROM_EMBEDDER] =
456 g_signal_new (g_intern_static_string ("from-embedder"),
457 G_OBJECT_CLASS_TYPE (object_class),
459 G_STRUCT_OFFSET (GdkWindowClass, from_embedder),
461 _gdk_marshal_VOID__DOUBLE_DOUBLE_POINTER_POINTER,
470 * GdkWindow::create-surface:
471 * @window: the offscreen window on which the signal is emitted
472 * @width: the width of the offscreen surface to create
473 * @height: the height of the offscreen surface to create
475 * The ::create-surface signal is emitted when an offscreen window
476 * needs its surface (re)created, which happens either when the the
477 * window is first drawn to, or when the window is being
478 * resized. The first signal handler that returns a non-%NULL
479 * surface will stop any further signal emission, and its surface
482 * Note that it is not possible to access the window's previous
483 * surface from within any callback of this signal. Calling
484 * gdk_offscreen_window_get_surface() will lead to a crash.
486 * Returns: the newly created #cairo_surface_t for the offscreen window
490 signals[CREATE_SURFACE] =
491 g_signal_new (g_intern_static_string ("create-surface"),
492 G_OBJECT_CLASS_TYPE (object_class),
494 G_STRUCT_OFFSET (GdkWindowClass, create_surface),
495 create_surface_accumulator, NULL,
496 _gdk_marshal_BOXED__INT_INT,
497 CAIRO_GOBJECT_TYPE_SURFACE,
504 device_removed_cb (GdkDeviceManager *device_manager,
508 window->devices_inside = g_list_remove (window->devices_inside, device);
509 g_hash_table_remove (window->device_cursor, device);
511 if (window->device_events)
512 g_hash_table_remove (window->device_events, device);
516 gdk_window_finalize (GObject *object)
518 GdkWindow *window = GDK_WINDOW (object);
519 GdkDeviceManager *device_manager;
521 device_manager = gdk_display_get_device_manager (gdk_window_get_display (window));
522 g_signal_handlers_disconnect_by_func (device_manager, device_removed_cb, window);
524 if (!GDK_WINDOW_DESTROYED (window))
526 if (GDK_WINDOW_TYPE (window) != GDK_WINDOW_FOREIGN)
528 g_warning ("losing last reference to undestroyed window\n");
529 _gdk_window_destroy (window, FALSE);
532 /* We use TRUE here, to keep us from actually calling
533 * XDestroyWindow() on the window
535 _gdk_window_destroy (window, TRUE);
538 gdk_window_drop_cairo_surface (window);
542 g_object_unref (window->impl);
546 if (window->impl_window != window)
548 g_object_unref (window->impl_window);
549 window->impl_window = NULL;
553 cairo_region_destroy (window->shape);
555 if (window->input_shape)
556 cairo_region_destroy (window->input_shape);
559 g_object_unref (window->cursor);
561 if (window->device_cursor)
562 g_hash_table_destroy (window->device_cursor);
564 if (window->device_events)
565 g_hash_table_destroy (window->device_events);
567 if (window->source_event_masks)
568 g_hash_table_destroy (window->source_event_masks);
570 if (window->devices_inside)
571 g_list_free (window->devices_inside);
573 G_OBJECT_CLASS (parent_class)->finalize (object);
577 gdk_window_set_property (GObject *object,
582 GdkWindow *window = (GdkWindow *)object;
587 gdk_window_set_cursor (window, g_value_get_object (value));
591 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
597 gdk_window_get_property (GObject *object,
602 GdkWindow *window = (GdkWindow *) object;
607 g_value_set_object (value, gdk_window_get_cursor (window));
611 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
617 gdk_window_is_offscreen (GdkWindow *window)
619 return window->window_type == GDK_WINDOW_OFFSCREEN;
623 gdk_window_get_impl_window (GdkWindow *window)
625 return window->impl_window;
629 _gdk_window_get_impl_window (GdkWindow *window)
631 return gdk_window_get_impl_window (window);
635 gdk_window_has_impl (GdkWindow *window)
637 return window->impl_window == window;
641 gdk_window_is_toplevel (GdkWindow *window)
644 window->parent == NULL ||
645 window->parent->window_type == GDK_WINDOW_ROOT;
649 _gdk_window_has_impl (GdkWindow *window)
651 return gdk_window_has_impl (window);
655 gdk_window_has_no_impl (GdkWindow *window)
657 return window->impl_window != window;
661 remove_child_area (GdkWindow *private,
664 cairo_region_t *region)
667 cairo_region_t *child_region;
670 cairo_region_t *shape;
672 for (l = private->children; l; l = l->next)
679 /* If region is empty already, no need to do
680 anything potentially costly */
681 if (cairo_region_is_empty (region))
684 if (!GDK_WINDOW_IS_MAPPED (child) || child->input_only || child->composited)
687 /* Ignore offscreen children, as they don't draw in their parent and
688 * don't take part in the clipping */
689 if (gdk_window_is_offscreen (child))
694 r.width = child->width;
695 r.height = child->height;
697 /* Bail early if child totally outside region */
698 if (cairo_region_contains_rectangle (region, &r) == CAIRO_REGION_OVERLAP_OUT)
701 child_region = cairo_region_create_rectangle (&r);
705 /* Adjust shape region to parent window coords */
706 cairo_region_translate (child->shape, child->x, child->y);
707 cairo_region_intersect (child_region, child->shape);
708 cairo_region_translate (child->shape, -child->x, -child->y);
710 else if (private->window_type == GDK_WINDOW_FOREIGN)
712 shape = GDK_WINDOW_IMPL_GET_CLASS (child)->get_shape (child);
715 cairo_region_intersect (child_region, shape);
716 cairo_region_destroy (shape);
722 if (child->input_shape)
723 cairo_region_intersect (child_region, child->input_shape);
724 else if (private->window_type == GDK_WINDOW_FOREIGN)
726 shape = GDK_WINDOW_IMPL_GET_CLASS (child)->get_input_shape (child);
729 cairo_region_intersect (child_region, shape);
730 cairo_region_destroy (shape);
735 cairo_region_subtract (region, child_region);
736 cairo_region_destroy (child_region);
741 static GdkVisibilityState
742 effective_visibility (GdkWindow *window)
744 GdkVisibilityState native;
746 if (!gdk_window_is_viewable (window))
747 return GDK_VISIBILITY_NOT_VIEWABLE;
749 native = window->impl_window->native_visibility;
751 if (native == GDK_VISIBILITY_FULLY_OBSCURED ||
752 window->visibility == GDK_VISIBILITY_FULLY_OBSCURED)
753 return GDK_VISIBILITY_FULLY_OBSCURED;
754 else if (native == GDK_VISIBILITY_UNOBSCURED)
755 return window->visibility;
756 else /* native PARTIAL, private partial or unobscured */
757 return GDK_VISIBILITY_PARTIAL;
761 gdk_window_update_visibility (GdkWindow *window)
763 GdkVisibilityState new_visibility;
766 new_visibility = effective_visibility (window);
768 if (new_visibility != window->effective_visibility)
770 window->effective_visibility = new_visibility;
772 if (new_visibility != GDK_VISIBILITY_NOT_VIEWABLE &&
773 window->event_mask & GDK_VISIBILITY_NOTIFY)
775 event = _gdk_make_event (window, GDK_VISIBILITY_NOTIFY,
777 event->visibility.state = new_visibility;
783 gdk_window_update_visibility_recursively (GdkWindow *window,
784 GdkWindow *only_for_impl)
789 gdk_window_update_visibility (window);
790 for (l = window->children; l != NULL; l = l->next)
793 if ((only_for_impl == NULL) ||
794 (only_for_impl == child->impl_window))
795 gdk_window_update_visibility_recursively (child, only_for_impl);
800 should_apply_clip_as_shape (GdkWindow *window)
803 gdk_window_has_impl (window) &&
804 /* Not for offscreens */
805 !gdk_window_is_offscreen (window) &&
806 /* or for toplevels */
807 !gdk_window_is_toplevel (window) &&
808 /* or for foreign windows */
809 window->window_type != GDK_WINDOW_FOREIGN &&
810 /* or for the root window */
811 window->window_type != GDK_WINDOW_ROOT;
815 apply_shape (GdkWindow *window,
816 cairo_region_t *region)
818 GdkWindowImplClass *impl_class;
820 /* We trash whether we applied a shape so that
821 we can avoid unsetting it many times, which
822 could happen in e.g. apply_clip_as_shape as
823 windows get resized */
824 impl_class = GDK_WINDOW_IMPL_GET_CLASS (window->impl);
826 impl_class->shape_combine_region (window,
828 else if (window->applied_shape)
829 impl_class->shape_combine_region (window,
832 window->applied_shape = region != NULL;
836 region_rect_equal (const cairo_region_t *region,
837 const GdkRectangle *rect)
839 GdkRectangle extents;
841 if (cairo_region_num_rectangles (region) != 1)
844 cairo_region_get_extents (region, &extents);
846 return extents.x == rect->x &&
847 extents.y == rect->y &&
848 extents.width == rect->width &&
849 extents.height == rect->height;
853 apply_clip_as_shape (GdkWindow *window)
858 r.width = window->width;
859 r.height = window->height;
861 /* We only apply the clip region if would differ
862 from the actual clip region implied by the size
863 of the window. This is to avoid unneccessarily
864 adding meaningless shapes to all native subwindows */
865 if (!region_rect_equal (window->clip_region, &r))
866 apply_shape (window, window->clip_region);
868 apply_shape (window, NULL);
872 recompute_visible_regions_internal (GdkWindow *private,
873 gboolean recalculate_clip,
874 gboolean recalculate_siblings,
875 gboolean recalculate_children)
880 cairo_region_t *new_clip, *old_clip_region_with_children;
881 gboolean clip_region_changed;
882 gboolean abs_pos_changed;
883 int old_abs_x, old_abs_y;
885 old_abs_x = private->abs_x;
886 old_abs_y = private->abs_y;
888 /* Update absolute position */
889 if (gdk_window_has_impl (private))
891 /* Native window starts here */
897 private->abs_x = private->parent->abs_x + private->x;
898 private->abs_y = private->parent->abs_y + private->y;
902 private->abs_x != old_abs_x ||
903 private->abs_y != old_abs_y;
905 /* Update clip region based on:
908 * siblings in parents above window
910 clip_region_changed = FALSE;
911 if (recalculate_clip)
913 if (private->viewable)
915 /* Calculate visible region (sans children) in parent window coords */
918 r.width = private->width;
919 r.height = private->height;
920 new_clip = cairo_region_create_rectangle (&r);
922 if (!gdk_window_is_toplevel (private))
924 cairo_region_intersect (new_clip, private->parent->clip_region);
926 /* Remove all overlapping children from parent. */
927 remove_child_area (private->parent, private, FALSE, new_clip);
930 /* Convert from parent coords to window coords */
931 cairo_region_translate (new_clip, -private->x, -private->y);
934 cairo_region_intersect (new_clip, private->shape);
937 new_clip = cairo_region_create ();
939 if (private->clip_region == NULL ||
940 !cairo_region_equal (private->clip_region, new_clip))
941 clip_region_changed = TRUE;
943 if (private->clip_region)
944 cairo_region_destroy (private->clip_region);
945 private->clip_region = new_clip;
947 old_clip_region_with_children = private->clip_region_with_children;
948 private->clip_region_with_children = cairo_region_copy (private->clip_region);
949 if (private->window_type != GDK_WINDOW_ROOT)
950 remove_child_area (private, NULL, FALSE, private->clip_region_with_children);
952 if (clip_region_changed ||
953 !cairo_region_equal (private->clip_region_with_children, old_clip_region_with_children))
954 private->clip_tag = new_region_tag ();
956 if (old_clip_region_with_children)
957 cairo_region_destroy (old_clip_region_with_children);
960 if (clip_region_changed)
962 GdkVisibilityState visibility;
963 gboolean fully_visible;
965 if (cairo_region_is_empty (private->clip_region))
966 visibility = GDK_VISIBILITY_FULLY_OBSCURED;
971 fully_visible = cairo_region_equal (private->clip_region,
978 r.width = private->width;
979 r.height = private->height;
980 fully_visible = region_rect_equal (private->clip_region, &r);
984 visibility = GDK_VISIBILITY_UNOBSCURED;
986 visibility = GDK_VISIBILITY_PARTIAL;
989 if (private->visibility != visibility)
991 private->visibility = visibility;
992 gdk_window_update_visibility (private);
996 /* Update all children, recursively (except for root, where children are not exact). */
997 if ((abs_pos_changed || clip_region_changed || recalculate_children) &&
998 private->window_type != GDK_WINDOW_ROOT)
1000 for (l = private->children; l; l = l->next)
1003 /* Only recalculate clip if the the clip region changed, otherwise
1004 * there is no way the child clip region could change (its has not e.g. moved)
1005 * Except if recalculate_children is set to force child updates
1007 recompute_visible_regions_internal (child,
1008 recalculate_clip && (clip_region_changed || recalculate_children),
1013 if (clip_region_changed &&
1014 should_apply_clip_as_shape (private))
1015 apply_clip_as_shape (private);
1017 if (recalculate_siblings &&
1018 !gdk_window_is_toplevel (private))
1020 /* If we moved a child window in parent or changed the stacking order, then we
1021 * need to recompute the visible area of all the other children in the parent
1023 for (l = private->parent->children; l; l = l->next)
1027 if (child != private)
1028 recompute_visible_regions_internal (child, TRUE, FALSE, FALSE);
1031 /* We also need to recompute the _with_children clip for the parent */
1032 recompute_visible_regions_internal (private->parent, TRUE, FALSE, FALSE);
1035 if (private->cairo_surface && gdk_window_has_impl (private))
1037 GdkWindowImplClass *iface = GDK_WINDOW_IMPL_GET_CLASS (private->impl);
1039 private->cairo_surface = iface->resize_cairo_surface (private,
1040 private->cairo_surface,
1044 else if (private->cairo_surface)
1045 gdk_window_drop_cairo_surface (private);
1048 /* Call this when private has changed in one or more of these ways:
1052 * stacking order of window changed
1055 * It will recalculate abs_x/y and the clip regions
1057 * Unless the window didn't change stacking order or size/pos, pass in TRUE
1058 * for recalculate_siblings. (Mostly used internally for the recursion)
1060 * If a child window was removed (and you can't use that child for
1061 * recompute_visible_regions), pass in TRUE for recalculate_children on the parent
1064 recompute_visible_regions (GdkWindow *private,
1065 gboolean recalculate_siblings,
1066 gboolean recalculate_children)
1068 recompute_visible_regions_internal (private,
1070 recalculate_siblings,
1071 recalculate_children);
1075 _gdk_window_update_size (GdkWindow *window)
1077 recompute_visible_regions (window, TRUE, FALSE);
1080 /* Find the native window that would be just above "child"
1081 * in the native stacking order if "child" was a native window
1082 * (it doesn't have to be native). If there is no such native
1083 * window inside this native parent then NULL is returned.
1084 * If child is NULL, find lowest native window in parent.
1087 find_native_sibling_above_helper (GdkWindow *parent,
1095 l = g_list_find (parent->children, child);
1096 g_assert (l != NULL); /* Better be a child of its parent... */
1097 l = l->prev; /* Start looking at the one above the child */
1100 l = g_list_last (parent->children);
1102 for (; l != NULL; l = l->prev)
1106 if (gdk_window_has_impl (w))
1109 g_assert (parent != w);
1110 w = find_native_sibling_above_helper (w, NULL);
1120 find_native_sibling_above (GdkWindow *parent,
1125 w = find_native_sibling_above_helper (parent, child);
1129 if (gdk_window_has_impl (parent))
1132 return find_native_sibling_above (parent->parent, parent);
1136 get_native_device_event_mask (GdkWindow *private,
1139 GdkEventMask event_mask;
1142 event_mask = GPOINTER_TO_INT (g_hash_table_lookup (private->device_events, device));
1144 event_mask = private->event_mask;
1146 if (private->window_type == GDK_WINDOW_ROOT ||
1147 private->window_type == GDK_WINDOW_FOREIGN)
1153 /* Do whatever the app asks to, since the app
1154 * may be asking for weird things for native windows,
1155 * but don't use motion hints as that may affect non-native
1156 * child windows that don't want it. Also, we need to
1157 * set all the app-specified masks since they will be picked
1158 * up by any implicit grabs (i.e. if they were not set as
1159 * native we would not get the events we need). */
1160 mask = private->event_mask & ~GDK_POINTER_MOTION_HINT_MASK;
1162 /* We need thse for all native windows so we can
1163 emulate events on children: */
1166 GDK_VISIBILITY_NOTIFY_MASK |
1167 GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_MASK;
1169 /* Additionally we select for pointer and button events
1170 * for toplevels as we need to get these to emulate
1171 * them for non-native subwindows. Even though we don't
1172 * select on them for all native windows we will get them
1173 * as the events are propagated out to the first window
1174 * that select for them.
1175 * Not selecting for button press on all windows is an
1176 * important thing, because in X only one client can do
1177 * so, and we don't want to unexpectedly prevent another
1178 * client from doing it.
1180 * We also need to do the same if the app selects for button presses
1181 * because then we will get implicit grabs for this window, and the
1182 * event mask used for that grab is based on the rest of the mask
1183 * for the window, but we might need more events than this window
1184 * lists due to some non-native child window.
1186 if (gdk_window_is_toplevel (private) ||
1187 mask & GDK_BUTTON_PRESS_MASK)
1189 GDK_POINTER_MOTION_MASK |
1190 GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK |
1198 get_native_grab_event_mask (GdkEventMask grab_mask)
1200 /* Similar to the above but for pointer events only */
1202 GDK_POINTER_MOTION_MASK |
1203 GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK |
1204 GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_MASK |
1207 ~GDK_POINTER_MOTION_HINT_MASK);
1211 get_native_event_mask (GdkWindow *private)
1213 return get_native_device_event_mask (private, NULL);
1216 /* Puts the native window in the right order wrt the other native windows
1217 * in the hierarchy, given the position it has in the client side data.
1218 * This is useful if some operation changed the stacking order.
1219 * This calls assumes the native window is now topmost in its native parent.
1222 sync_native_window_stack_position (GdkWindow *window)
1225 GdkWindowImplClass *impl_class;
1226 GList listhead = {0};
1228 impl_class = GDK_WINDOW_IMPL_GET_CLASS (window->impl);
1230 above = find_native_sibling_above (window->parent, window);
1233 listhead.data = window;
1234 impl_class->restack_under (above, &listhead);
1239 * gdk_window_new: (constructor)
1240 * @parent: (allow-none): a #GdkWindow, or %NULL to create the window as a child of
1241 * the default root window for the default display.
1242 * @attributes: attributes of the new window
1243 * @attributes_mask: mask indicating which fields in @attributes are valid
1245 * Creates a new #GdkWindow using the attributes from
1246 * @attributes. See #GdkWindowAttr and #GdkWindowAttributesType for
1247 * more details. Note: to use this on displays other than the default
1248 * display, @parent must be specified.
1250 * Return value: (transfer full): the new #GdkWindow
1253 gdk_window_new (GdkWindow *parent,
1254 GdkWindowAttr *attributes,
1255 gint attributes_mask)
1259 GdkDisplay *display;
1262 GdkEventMask event_mask;
1263 GdkWindow *real_parent;
1264 GdkDeviceManager *device_manager;
1266 g_return_val_if_fail (attributes != NULL, NULL);
1270 GDK_NOTE (MULTIHEAD,
1271 g_warning ("gdk_window_new(): no parent specified reverting to parent = default root window"));
1273 screen = gdk_screen_get_default ();
1274 parent = gdk_screen_get_root_window (screen);
1277 screen = gdk_window_get_screen (parent);
1279 g_return_val_if_fail (GDK_IS_WINDOW (parent), NULL);
1281 if (GDK_WINDOW_DESTROYED (parent))
1283 g_warning ("gdk_window_new(): parent is destroyed\n");
1287 display = gdk_screen_get_display (screen);
1289 window = _gdk_display_create_window (display);
1291 /* Windows with a foreign parent are treated as if they are children
1292 * of the root window, except for actual creation.
1294 real_parent = parent;
1295 if (GDK_WINDOW_TYPE (parent) == GDK_WINDOW_FOREIGN)
1296 parent = gdk_screen_get_root_window (screen);
1298 window->parent = parent;
1300 window->accept_focus = TRUE;
1301 window->focus_on_map = TRUE;
1303 if (attributes_mask & GDK_WA_X)
1308 if (attributes_mask & GDK_WA_Y)
1315 window->width = (attributes->width > 1) ? (attributes->width) : (1);
1316 window->height = (attributes->height > 1) ? (attributes->height) : (1);
1318 if (attributes->wclass == GDK_INPUT_ONLY)
1320 /* Backwards compatiblity - we've always ignored
1321 * attributes->window_type for input-only windows
1324 if (GDK_WINDOW_TYPE (parent) == GDK_WINDOW_ROOT)
1325 window->window_type = GDK_WINDOW_TEMP;
1327 window->window_type = GDK_WINDOW_CHILD;
1330 window->window_type = attributes->window_type;
1333 switch (window->window_type)
1335 case GDK_WINDOW_TOPLEVEL:
1336 case GDK_WINDOW_TEMP:
1337 case GDK_WINDOW_OFFSCREEN:
1338 if (GDK_WINDOW_TYPE (parent) != GDK_WINDOW_ROOT)
1339 g_warning (G_STRLOC "Toplevel windows must be created as children of\n"
1340 "of a window of type GDK_WINDOW_ROOT or GDK_WINDOW_FOREIGN");
1341 case GDK_WINDOW_CHILD:
1345 g_warning (G_STRLOC "cannot make windows of type %d", window->window_type);
1349 if (attributes_mask & GDK_WA_VISUAL)
1350 window->visual = attributes->visual;
1352 window->visual = gdk_screen_get_system_visual (screen);
1354 window->event_mask = attributes->event_mask;
1356 if (attributes->wclass == GDK_INPUT_OUTPUT)
1358 window->input_only = FALSE;
1359 window->depth = window->visual->depth;
1361 /* XXX: Cache this somehow? */
1362 window->background = cairo_pattern_create_rgb (0, 0, 0);
1367 window->input_only = TRUE;
1371 window->parent->children = g_list_prepend (window->parent->children, window);
1374 if (window->parent->window_type == GDK_WINDOW_ROOT)
1375 native = TRUE; /* Always use native windows for toplevels */
1376 else if (!window->input_only &&
1377 (attributes_mask & GDK_WA_VISUAL &&
1378 attributes->visual != gdk_window_get_visual (window->parent)))
1379 native = TRUE; /* InputOutput window with different visual than parent, needs native window */
1381 if (gdk_window_is_offscreen (window))
1383 _gdk_offscreen_window_new (window, attributes, attributes_mask);
1384 window->impl_window = window;
1388 event_mask = get_native_event_mask (window);
1390 /* Create the impl */
1391 _gdk_display_create_window_impl (display, window, real_parent, screen, event_mask, attributes, attributes_mask);
1392 window->impl_window = window;
1394 /* This will put the native window topmost in the native parent, which may
1395 * be wrong wrt other native windows in the non-native hierarchy, so restack */
1396 if (!_gdk_window_has_impl (real_parent))
1397 sync_native_window_stack_position (window);
1401 window->impl_window = g_object_ref (window->parent->impl_window);
1402 window->impl = g_object_ref (window->impl_window->impl);
1405 recompute_visible_regions (window, TRUE, FALSE);
1407 gdk_window_set_cursor (window, ((attributes_mask & GDK_WA_CURSOR) ?
1408 (attributes->cursor) :
1411 device_manager = gdk_display_get_device_manager (gdk_window_get_display (parent));
1412 g_signal_connect (device_manager, "device-removed",
1413 G_CALLBACK (device_removed_cb), window);
1419 is_parent_of (GdkWindow *parent,
1430 w = gdk_window_get_parent (w);
1437 change_impl (GdkWindow *private,
1438 GdkWindow *impl_window,
1443 GdkWindowImpl *old_impl;
1444 GdkWindow *old_impl_window;
1446 old_impl = private->impl;
1447 old_impl_window = private->impl_window;
1448 if (private != impl_window)
1449 private->impl_window = g_object_ref (impl_window);
1451 private->impl_window = private;
1452 private->impl = g_object_ref (new);
1453 if (old_impl_window != private)
1454 g_object_unref (old_impl_window);
1455 g_object_unref (old_impl);
1457 for (l = private->children; l != NULL; l = l->next)
1461 if (child->impl == old_impl)
1462 change_impl (child, impl_window, new);
1467 reparent_to_impl (GdkWindow *private)
1472 GdkWindowImplClass *impl_class;
1474 impl_class = GDK_WINDOW_IMPL_GET_CLASS (private->impl);
1476 /* Enumerate in reverse order so we get the right order for the native
1477 windows (first in childrens list is topmost, and reparent places on top) */
1478 for (l = g_list_last (private->children); l != NULL; l = l->prev)
1482 if (child->impl == private->impl)
1483 reparent_to_impl (child);
1486 show = impl_class->reparent ((GdkWindow *)child,
1487 (GdkWindow *)private,
1488 child->x, child->y);
1490 gdk_window_show_unraised ((GdkWindow *)child);
1497 * gdk_window_reparent:
1498 * @window: a #GdkWindow
1499 * @new_parent: new parent to move @window into
1500 * @x: X location inside the new parent
1501 * @y: Y location inside the new parent
1503 * Reparents @window into the given @new_parent. The window being
1504 * reparented will be unmapped as a side effect.
1508 gdk_window_reparent (GdkWindow *window,
1509 GdkWindow *new_parent,
1513 GdkWindow *old_parent;
1515 gboolean show, was_mapped, applied_clip_as_shape;
1516 gboolean do_reparent_to_impl;
1517 GdkEventMask old_native_event_mask;
1518 GdkWindowImplClass *impl_class;
1520 g_return_if_fail (GDK_IS_WINDOW (window));
1521 g_return_if_fail (new_parent == NULL || GDK_IS_WINDOW (new_parent));
1522 g_return_if_fail (GDK_WINDOW_TYPE (window) != GDK_WINDOW_ROOT);
1524 if (GDK_WINDOW_DESTROYED (window) ||
1525 (new_parent && GDK_WINDOW_DESTROYED (new_parent)))
1528 screen = gdk_window_get_screen (window);
1530 new_parent = gdk_screen_get_root_window (screen);
1532 /* No input-output children of input-only windows */
1533 if (new_parent->input_only && !window->input_only)
1536 /* Don't create loops in hierarchy */
1537 if (is_parent_of (window, new_parent))
1540 /* This might be wrong in the new parent, e.g. for non-native surfaces.
1541 To make sure we're ok, just wipe it. */
1542 gdk_window_drop_cairo_surface (window);
1544 impl_class = GDK_WINDOW_IMPL_GET_CLASS (window->impl);
1545 old_parent = window->parent;
1547 was_mapped = GDK_WINDOW_IS_MAPPED (window);
1550 /* Reparenting to toplevel. Ensure we have a native window so this can work */
1551 if (new_parent->window_type == GDK_WINDOW_ROOT ||
1552 new_parent->window_type == GDK_WINDOW_FOREIGN)
1553 gdk_window_ensure_native (window);
1555 applied_clip_as_shape = should_apply_clip_as_shape (window);
1557 old_native_event_mask = 0;
1558 do_reparent_to_impl = FALSE;
1559 if (gdk_window_has_impl (window))
1561 old_native_event_mask = get_native_event_mask (window);
1563 show = impl_class->reparent (window, new_parent, x, y);
1567 /* This shouldn't happen, as we created a native in this case, check anyway to see if that ever fails */
1568 g_assert (new_parent->window_type != GDK_WINDOW_ROOT &&
1569 new_parent->window_type != GDK_WINDOW_FOREIGN);
1572 gdk_window_hide (window);
1574 do_reparent_to_impl = TRUE;
1575 change_impl (window,
1576 new_parent->impl_window,
1580 /* From here on, we treat parents of type GDK_WINDOW_FOREIGN like
1583 if (GDK_WINDOW_TYPE (new_parent) == GDK_WINDOW_FOREIGN)
1585 new_parent = gdk_screen_get_root_window (screen);
1589 old_parent->children = g_list_remove (old_parent->children, window);
1591 window->parent = new_parent;
1595 new_parent->children = g_list_prepend (new_parent->children, window);
1597 /* Switch the window type as appropriate */
1599 switch (GDK_WINDOW_TYPE (new_parent))
1601 case GDK_WINDOW_ROOT:
1602 case GDK_WINDOW_FOREIGN:
1603 if (window->toplevel_window_type != -1)
1604 GDK_WINDOW_TYPE (window) = window->toplevel_window_type;
1605 else if (GDK_WINDOW_TYPE (window) == GDK_WINDOW_CHILD)
1606 GDK_WINDOW_TYPE (window) = GDK_WINDOW_TOPLEVEL;
1608 case GDK_WINDOW_OFFSCREEN:
1609 case GDK_WINDOW_TOPLEVEL:
1610 case GDK_WINDOW_CHILD:
1611 case GDK_WINDOW_TEMP:
1612 if (GDK_WINDOW_TYPE (window) != GDK_WINDOW_CHILD && \
1613 GDK_WINDOW_TYPE (window) != GDK_WINDOW_FOREIGN)
1615 /* Save the original window type so we can restore it if the
1616 * window is reparented back to be a toplevel
1618 window->toplevel_window_type = GDK_WINDOW_TYPE (window);
1619 GDK_WINDOW_TYPE (window) = GDK_WINDOW_CHILD;
1623 /* We might have changed window type for a native windows, so we
1624 need to change the event mask too. */
1625 if (gdk_window_has_impl (window))
1627 GdkEventMask native_event_mask = get_native_event_mask (window);
1629 if (native_event_mask != old_native_event_mask)
1630 impl_class->set_events (window, native_event_mask);
1633 _gdk_window_update_viewable (window);
1635 recompute_visible_regions (window, TRUE, FALSE);
1636 if (old_parent && GDK_WINDOW_TYPE (old_parent) != GDK_WINDOW_ROOT)
1637 recompute_visible_regions (old_parent, FALSE, TRUE);
1639 /* We used to apply the clip as the shape, but no more.
1640 Reset this to the real shape */
1641 if (gdk_window_has_impl (window) &&
1642 applied_clip_as_shape &&
1643 !should_apply_clip_as_shape (window))
1644 apply_shape (window, window->shape);
1646 if (do_reparent_to_impl)
1647 reparent_to_impl (window);
1650 /* The reparent will have put the native window topmost in the native parent,
1651 * which may be wrong wrt other native windows in the non-native hierarchy,
1653 if (!gdk_window_has_impl (new_parent))
1654 sync_native_window_stack_position (window);
1658 gdk_window_show_unraised (window);
1660 _gdk_synthesize_crossing_events_for_geometry_change (window);
1664 * gdk_window_ensure_native:
1665 * @window: a #GdkWindow
1667 * Tries to ensure that there is a window-system native window for this
1668 * GdkWindow. This may fail in some situations, returning %FALSE.
1670 * Offscreen window and children of them can never have native windows.
1672 * Some backends may not support native child windows.
1674 * Returns: %TRUE if the window has a native window, %FALSE otherwise
1679 gdk_window_ensure_native (GdkWindow *window)
1681 GdkWindow *impl_window;
1682 GdkWindowImpl *new_impl, *old_impl;
1683 GdkDisplay *display;
1687 GdkWindowImplClass *impl_class;
1689 g_return_val_if_fail (GDK_IS_WINDOW (window), FALSE);
1691 if (GDK_WINDOW_TYPE (window) == GDK_WINDOW_ROOT ||
1692 GDK_WINDOW_DESTROYED (window))
1695 impl_window = gdk_window_get_impl_window (window);
1697 if (gdk_window_is_offscreen (impl_window))
1698 return FALSE; /* native in offscreens not supported */
1700 if (impl_window == window)
1701 /* Already has an impl, and its not offscreen . */
1704 /* Need to create a native window */
1706 gdk_window_drop_cairo_surface (window);
1708 screen = gdk_window_get_screen (window);
1709 display = gdk_screen_get_display (screen);
1711 old_impl = window->impl;
1712 _gdk_display_create_window_impl (display,
1713 window, window->parent,
1715 get_native_event_mask (window),
1717 new_impl = window->impl;
1719 window->impl = old_impl;
1720 change_impl (window, window, new_impl);
1722 impl_class = GDK_WINDOW_IMPL_GET_CLASS (window->impl);
1724 /* Native window creation will put the native window topmost in the
1725 * native parent, which may be wrong wrt the position of the previous
1726 * non-native window wrt to the other non-native children, so correct this.
1728 above = find_native_sibling_above (window->parent, window);
1731 listhead.data = window;
1732 listhead.prev = NULL;
1733 listhead.next = NULL;
1734 impl_class->restack_under ((GdkWindow *)above, &listhead);
1737 recompute_visible_regions (window, FALSE, FALSE);
1739 /* The shape may not have been set, as the clip region doesn't actually
1740 change, so do it here manually */
1741 if (should_apply_clip_as_shape (window))
1742 apply_clip_as_shape (window);
1744 reparent_to_impl (window);
1746 if (!window->input_only)
1747 impl_class->set_background (window, window->background);
1749 impl_class->input_shape_combine_region (window,
1750 window->input_shape,
1753 if (gdk_window_is_viewable (window))
1754 impl_class->show (window, FALSE);
1760 * _gdk_event_filter_unref:
1761 * @window: (allow-none): A #GdkWindow, or %NULL to be the global window
1762 * @filter: A window filter
1764 * Release a reference to @filter. Note this function may
1765 * mutate the list storage, so you need to handle this
1766 * if iterating over a list of filters.
1769 _gdk_event_filter_unref (GdkWindow *window,
1770 GdkEventFilter *filter)
1776 filters = &_gdk_default_filters;
1778 filters = &window->filters;
1780 tmp_list = *filters;
1783 GdkEventFilter *iter_filter = tmp_list->data;
1787 tmp_list = tmp_list->next;
1789 if (iter_filter != filter)
1792 g_assert (iter_filter->ref_count > 0);
1794 filter->ref_count--;
1795 if (filter->ref_count != 0)
1798 *filters = g_list_remove_link (*filters, node);
1800 g_list_free_1 (node);
1805 window_remove_filters (GdkWindow *window)
1807 while (window->filters)
1808 _gdk_event_filter_unref (window, window->filters->data);
1812 update_pointer_info_foreach (GdkDisplay *display,
1814 GdkPointerWindowInfo *pointer_info,
1817 GdkWindow *window = user_data;
1819 if (pointer_info->toplevel_under_pointer == window)
1821 g_object_unref (pointer_info->toplevel_under_pointer);
1822 pointer_info->toplevel_under_pointer = NULL;
1827 window_remove_from_pointer_info (GdkWindow *window,
1828 GdkDisplay *display)
1830 _gdk_display_pointer_info_foreach (display,
1831 update_pointer_info_foreach,
1836 * _gdk_window_destroy_hierarchy:
1837 * @window: a #GdkWindow
1838 * @recursing: If TRUE, then this is being called because a parent
1840 * @recursing_native: If TRUE, then this is being called because a native parent
1841 * was destroyed. This generally means that the call to the
1842 * windowing system to destroy the window can be omitted, since
1843 * it will be destroyed as a result of the parent being destroyed.
1844 * Unless @foreign_destroy.
1845 * @foreign_destroy: If TRUE, the window or a parent was destroyed by some
1846 * external agency. The window has already been destroyed and no
1847 * windowing system calls should be made. (This may never happen
1848 * for some windowing systems.)
1850 * Internal function to destroy a window. Like gdk_window_destroy(),
1851 * but does not drop the reference count created by gdk_window_new().
1854 _gdk_window_destroy_hierarchy (GdkWindow *window,
1856 gboolean recursing_native,
1857 gboolean foreign_destroy)
1859 GdkWindowImplClass *impl_class;
1860 GdkWindow *temp_window;
1862 GdkDisplay *display;
1866 g_return_if_fail (GDK_IS_WINDOW (window));
1868 if (GDK_WINDOW_DESTROYED (window))
1871 display = gdk_window_get_display (window);
1872 screen = gdk_window_get_screen (window);
1873 temp_window = g_object_get_qdata (G_OBJECT (screen), quark_pointer_window);
1874 if (temp_window == window)
1875 g_object_set_qdata (G_OBJECT (screen), quark_pointer_window, NULL);
1878 switch (window->window_type)
1880 case GDK_WINDOW_ROOT:
1881 if (!screen->closed)
1883 g_error ("attempted to destroy root window");
1886 /* else fall thru */
1887 case GDK_WINDOW_TOPLEVEL:
1888 case GDK_WINDOW_CHILD:
1889 case GDK_WINDOW_TEMP:
1890 case GDK_WINDOW_FOREIGN:
1891 case GDK_WINDOW_OFFSCREEN:
1892 if (window->window_type == GDK_WINDOW_FOREIGN && !foreign_destroy)
1894 /* Logically, it probably makes more sense to send
1895 * a "destroy yourself" message to the foreign window
1896 * whether or not it's in our hierarchy; but for historical
1897 * reasons, we only send "destroy yourself" messages to
1898 * foreign windows in our hierarchy.
1902 impl_class = GDK_WINDOW_IMPL_GET_CLASS (window->impl);
1904 if (gdk_window_has_impl (window))
1905 impl_class->destroy_foreign (window);
1908 /* Also for historical reasons, we remove any filters
1909 * on a foreign window when it or a parent is destroyed;
1910 * this likely causes problems if two separate portions
1911 * of code are maintaining filter lists on a foreign window.
1913 window_remove_filters (window);
1919 if (window->parent->children)
1920 window->parent->children = g_list_remove (window->parent->children, window);
1923 GDK_WINDOW_IS_MAPPED (window))
1925 recompute_visible_regions (window, TRUE, FALSE);
1926 gdk_window_invalidate_in_parent (window);
1930 gdk_window_free_paint_stack (window);
1932 if (window->background)
1934 cairo_pattern_destroy (window->background);
1935 window->background = NULL;
1938 if (window->window_type == GDK_WINDOW_FOREIGN)
1939 g_assert (window->children == NULL);
1942 children = tmp = window->children;
1943 window->children = NULL;
1947 temp_window = tmp->data;
1951 _gdk_window_destroy_hierarchy (temp_window,
1953 recursing_native || gdk_window_has_impl (window),
1957 g_list_free (children);
1960 _gdk_window_clear_update_area (window);
1962 gdk_window_drop_cairo_surface (window);
1964 impl_class = GDK_WINDOW_IMPL_GET_CLASS (window->impl);
1966 if (gdk_window_has_impl (window))
1967 impl_class->destroy (window, recursing_native,
1971 /* hide to make sure we repaint and break grabs */
1972 gdk_window_hide (window);
1975 window->state |= GDK_WINDOW_STATE_WITHDRAWN;
1976 window->parent = NULL;
1977 window->destroyed = TRUE;
1979 window_remove_filters (window);
1981 window_remove_from_pointer_info (window, display);
1983 if (window->clip_region)
1985 cairo_region_destroy (window->clip_region);
1986 window->clip_region = NULL;
1989 if (window->clip_region_with_children)
1991 cairo_region_destroy (window->clip_region_with_children);
1992 window->clip_region_with_children = NULL;
1995 if (window->outstanding_moves)
1997 g_list_foreach (window->outstanding_moves, (GFunc)gdk_window_region_move_free, NULL);
1998 g_list_free (window->outstanding_moves);
1999 window->outstanding_moves = NULL;
2007 * _gdk_window_destroy:
2008 * @window: a #GdkWindow
2009 * @foreign_destroy: If TRUE, the window or a parent was destroyed by some
2010 * external agency. The window has already been destroyed and no
2011 * windowing system calls should be made. (This may never happen
2012 * for some windowing systems.)
2014 * Internal function to destroy a window. Like gdk_window_destroy(),
2015 * but does not drop the reference count created by gdk_window_new().
2018 _gdk_window_destroy (GdkWindow *window,
2019 gboolean foreign_destroy)
2021 _gdk_window_destroy_hierarchy (window, FALSE, FALSE, foreign_destroy);
2025 * gdk_window_destroy:
2026 * @window: a #GdkWindow
2028 * Destroys the window system resources associated with @window and decrements @window's
2029 * reference count. The window system resources for all children of @window are also
2030 * destroyed, but the children's reference counts are not decremented.
2032 * Note that a window will not be destroyed automatically when its reference count
2033 * reaches zero. You must call this function yourself before that happens.
2037 gdk_window_destroy (GdkWindow *window)
2039 _gdk_window_destroy_hierarchy (window, FALSE, FALSE, FALSE);
2040 g_object_unref (window);
2044 * gdk_window_set_user_data:
2045 * @window: a #GdkWindow
2046 * @user_data: (allow-none) (type GObject.Object): user data
2048 * For most purposes this function is deprecated in favor of
2049 * g_object_set_data(). However, for historical reasons GTK+ stores
2050 * the #GtkWidget that owns a #GdkWindow as user data on the
2051 * #GdkWindow. So, custom widget implementations should use
2052 * this function for that. If GTK+ receives an event for a #GdkWindow,
2053 * and the user data for the window is non-%NULL, GTK+ will assume the
2054 * user data is a #GtkWidget, and forward the event to that widget.
2058 gdk_window_set_user_data (GdkWindow *window,
2061 g_return_if_fail (GDK_IS_WINDOW (window));
2063 window->user_data = user_data;
2067 * gdk_window_get_user_data:
2068 * @window: a #GdkWindow
2069 * @data: (out): return location for user data
2071 * Retrieves the user data for @window, which is normally the widget
2072 * that @window belongs to. See gdk_window_set_user_data().
2076 gdk_window_get_user_data (GdkWindow *window,
2079 g_return_if_fail (GDK_IS_WINDOW (window));
2081 *data = window->user_data;
2085 * gdk_window_get_window_type:
2086 * @window: a #GdkWindow
2088 * Gets the type of the window. See #GdkWindowType.
2090 * Return value: type of window
2093 gdk_window_get_window_type (GdkWindow *window)
2095 g_return_val_if_fail (GDK_IS_WINDOW (window), (GdkWindowType) -1);
2097 return GDK_WINDOW_TYPE (window);
2101 * gdk_window_get_visual:
2102 * @window: a #GdkWindow
2104 * Gets the #GdkVisual describing the pixel format of @window.
2106 * Return value: (transfer none): a #GdkVisual
2111 gdk_window_get_visual (GdkWindow *window)
2113 g_return_val_if_fail (GDK_IS_WINDOW (window), NULL);
2115 return window->visual;
2119 * gdk_window_get_screen:
2120 * @window: a #GdkWindow
2122 * Gets the #GdkScreen associated with a #GdkWindow.
2124 * Return value: (transfer none): the #GdkScreen associated with @window
2129 gdk_window_get_screen (GdkWindow *window)
2131 g_return_val_if_fail (GDK_IS_WINDOW (window), NULL);
2133 return gdk_visual_get_screen (window->visual);
2137 * gdk_window_get_display:
2138 * @window: a #GdkWindow
2140 * Gets the #GdkDisplay associated with a #GdkWindow.
2142 * Return value: (transfer none): the #GdkDisplay associated with @window
2147 gdk_window_get_display (GdkWindow *window)
2149 g_return_val_if_fail (GDK_IS_WINDOW (window), NULL);
2151 return gdk_screen_get_display (gdk_visual_get_screen (window->visual));
2154 * gdk_window_is_destroyed:
2155 * @window: a #GdkWindow
2157 * Check to see if a window is destroyed..
2159 * Return value: %TRUE if the window is destroyed
2164 gdk_window_is_destroyed (GdkWindow *window)
2166 return GDK_WINDOW_DESTROYED (window);
2170 to_embedder (GdkWindow *window,
2171 gdouble offscreen_x,
2172 gdouble offscreen_y,
2173 gdouble *embedder_x,
2174 gdouble *embedder_y)
2176 g_signal_emit (window, signals[TO_EMBEDDER], 0,
2177 offscreen_x, offscreen_y,
2178 embedder_x, embedder_y);
2182 from_embedder (GdkWindow *window,
2185 gdouble *offscreen_x,
2186 gdouble *offscreen_y)
2188 g_signal_emit (window, signals[FROM_EMBEDDER], 0,
2189 embedder_x, embedder_y,
2190 offscreen_x, offscreen_y);
2194 * gdk_window_has_native:
2195 * @window: a #GdkWindow
2197 * Checks whether the window has a native window or not. Note that
2198 * you can use gdk_window_ensure_native() if a native window is needed.
2200 * Returns: %TRUE if the %window has a native window, %FALSE otherwise.
2205 gdk_window_has_native (GdkWindow *window)
2207 g_return_val_if_fail (GDK_IS_WINDOW (window), FALSE);
2209 return window->parent == NULL || window->parent->impl != window->impl;
2213 * gdk_window_get_position:
2214 * @window: a #GdkWindow
2215 * @x: (out) (allow-none): X coordinate of window
2216 * @y: (out) (allow-none): Y coordinate of window
2218 * Obtains the position of the window as reported in the
2219 * most-recently-processed #GdkEventConfigure. Contrast with
2220 * gdk_window_get_geometry() which queries the X server for the
2221 * current window position, regardless of which events have been
2222 * received or processed.
2224 * The position coordinates are relative to the window's parent window.
2228 gdk_window_get_position (GdkWindow *window,
2232 g_return_if_fail (GDK_IS_WINDOW (window));
2241 * gdk_window_get_parent:
2242 * @window: a #GdkWindow
2244 * Obtains the parent of @window, as known to GDK. Does not query the
2245 * X server; thus this returns the parent as passed to gdk_window_new(),
2246 * not the actual parent. This should never matter unless you're using
2247 * Xlib calls mixed with GDK calls on the X11 platform. It may also
2248 * matter for toplevel windows, because the window manager may choose
2251 * Note that you should use gdk_window_get_effective_parent() when
2252 * writing generic code that walks up a window hierarchy, because
2253 * gdk_window_get_parent() will most likely not do what you expect if
2254 * there are offscreen windows in the hierarchy.
2256 * Return value: (transfer none): parent of @window
2259 gdk_window_get_parent (GdkWindow *window)
2261 g_return_val_if_fail (GDK_IS_WINDOW (window), NULL);
2263 return window->parent;
2267 * gdk_window_get_effective_parent:
2268 * @window: a #GdkWindow
2270 * Obtains the parent of @window, as known to GDK. Works like
2271 * gdk_window_get_parent() for normal windows, but returns the
2272 * window's embedder for offscreen windows.
2274 * See also: gdk_offscreen_window_get_embedder()
2276 * Return value: (transfer none): effective parent of @window
2281 gdk_window_get_effective_parent (GdkWindow *window)
2283 g_return_val_if_fail (GDK_IS_WINDOW (window), NULL);
2285 if (gdk_window_is_offscreen (window))
2286 return gdk_offscreen_window_get_embedder (window);
2288 return window->parent;
2292 * gdk_window_get_toplevel:
2293 * @window: a #GdkWindow
2295 * Gets the toplevel window that's an ancestor of @window.
2297 * Any window type but %GDK_WINDOW_CHILD is considered a
2298 * toplevel window, as is a %GDK_WINDOW_CHILD window that
2299 * has a root window as parent.
2301 * Note that you should use gdk_window_get_effective_toplevel() when
2302 * you want to get to a window's toplevel as seen on screen, because
2303 * gdk_window_get_toplevel() will most likely not do what you expect
2304 * if there are offscreen windows in the hierarchy.
2306 * Return value: (transfer none): the toplevel window containing @window
2309 gdk_window_get_toplevel (GdkWindow *window)
2311 g_return_val_if_fail (GDK_IS_WINDOW (window), NULL);
2313 while (window->window_type == GDK_WINDOW_CHILD)
2315 if (gdk_window_is_toplevel (window))
2317 window = window->parent;
2324 * gdk_window_get_effective_toplevel:
2325 * @window: a #GdkWindow
2327 * Gets the toplevel window that's an ancestor of @window.
2329 * Works like gdk_window_get_toplevel(), but treats an offscreen window's
2330 * embedder as its parent, using gdk_window_get_effective_parent().
2332 * See also: gdk_offscreen_window_get_embedder()
2334 * Return value: (transfer none): the effective toplevel window containing @window
2339 gdk_window_get_effective_toplevel (GdkWindow *window)
2343 g_return_val_if_fail (GDK_IS_WINDOW (window), NULL);
2345 while ((parent = gdk_window_get_effective_parent (window)) != NULL &&
2346 (gdk_window_get_window_type (parent) != GDK_WINDOW_ROOT))
2353 * gdk_window_get_children:
2354 * @window: a #GdkWindow
2356 * Gets the list of children of @window known to GDK.
2357 * This function only returns children created via GDK,
2358 * so for example it's useless when used with the root window;
2359 * it only returns windows an application created itself.
2361 * The returned list must be freed, but the elements in the
2364 * Return value: (transfer container) (element-type GdkWindow):
2365 * list of child windows inside @window
2368 gdk_window_get_children (GdkWindow *window)
2370 g_return_val_if_fail (GDK_IS_WINDOW (window), NULL);
2372 if (GDK_WINDOW_DESTROYED (window))
2375 return g_list_copy (window->children);
2379 * gdk_window_peek_children:
2380 * @window: a #GdkWindow
2382 * Like gdk_window_get_children(), but does not copy the list of
2383 * children, so the list does not need to be freed.
2385 * Return value: (transfer none) (element-type GdkWindow):
2386 * a reference to the list of child windows in @window
2389 gdk_window_peek_children (GdkWindow *window)
2391 g_return_val_if_fail (GDK_IS_WINDOW (window), NULL);
2393 if (GDK_WINDOW_DESTROYED (window))
2396 return window->children;
2400 * gdk_window_add_filter: (skip)
2401 * @window: (allow-none): a #GdkWindow
2402 * @function: filter callback
2403 * @data: data to pass to filter callback
2405 * Adds an event filter to @window, allowing you to intercept events
2406 * before they reach GDK. This is a low-level operation and makes it
2407 * easy to break GDK and/or GTK+, so you have to know what you're
2408 * doing. Pass %NULL for @window to get all events for all windows,
2409 * instead of events for a specific window.
2411 * If you are interested in X GenericEvents, bear in mind that
2412 * XGetEventData() has been already called on the event, and
2413 * XFreeEventData() must not be called within @function.
2416 gdk_window_add_filter (GdkWindow *window,
2417 GdkFilterFunc function,
2421 GdkEventFilter *filter;
2423 g_return_if_fail (window == NULL || GDK_IS_WINDOW (window));
2425 if (window && GDK_WINDOW_DESTROYED (window))
2428 /* Filters are for the native events on the native window, so
2429 ensure there is a native window. */
2431 gdk_window_ensure_native (window);
2434 tmp_list = window->filters;
2436 tmp_list = _gdk_default_filters;
2440 filter = (GdkEventFilter *)tmp_list->data;
2441 if ((filter->function == function) && (filter->data == data))
2443 filter->ref_count++;
2446 tmp_list = tmp_list->next;
2449 filter = g_new (GdkEventFilter, 1);
2450 filter->function = function;
2451 filter->data = data;
2452 filter->ref_count = 1;
2456 window->filters = g_list_append (window->filters, filter);
2458 _gdk_default_filters = g_list_append (_gdk_default_filters, filter);
2462 * gdk_window_remove_filter: (skip)
2463 * @window: a #GdkWindow
2464 * @function: previously-added filter function
2465 * @data: user data for previously-added filter function
2467 * Remove a filter previously added with gdk_window_add_filter().
2470 gdk_window_remove_filter (GdkWindow *window,
2471 GdkFilterFunc function,
2475 GdkEventFilter *filter;
2477 g_return_if_fail (window == NULL || GDK_IS_WINDOW (window));
2480 tmp_list = window->filters;
2482 tmp_list = _gdk_default_filters;
2486 filter = (GdkEventFilter *)tmp_list->data;
2487 tmp_list = tmp_list->next;
2489 if ((filter->function == function) && (filter->data == data))
2491 filter->flags |= GDK_EVENT_FILTER_REMOVED;
2493 _gdk_event_filter_unref (window, filter);
2501 * gdk_screen_get_toplevel_windows:
2502 * @screen: The #GdkScreen where the toplevels are located.
2504 * Obtains a list of all toplevel windows known to GDK on the screen @screen.
2505 * A toplevel window is a child of the root window (see
2506 * gdk_get_default_root_window()).
2508 * The returned list should be freed with g_list_free(), but
2509 * its elements need not be freed.
2511 * Return value: (transfer container) (element-type GdkWindow):
2512 * list of toplevel windows, free with g_list_free()
2517 gdk_screen_get_toplevel_windows (GdkScreen *screen)
2519 GdkWindow * root_window;
2520 GList *new_list = NULL;
2523 g_return_val_if_fail (GDK_IS_SCREEN (screen), NULL);
2525 root_window = gdk_screen_get_root_window (screen);
2527 tmp_list = root_window->children;
2530 GdkWindow *w = tmp_list->data;
2532 if (w->window_type != GDK_WINDOW_FOREIGN)
2533 new_list = g_list_prepend (new_list, w);
2534 tmp_list = tmp_list->next;
2541 * gdk_window_is_visible:
2542 * @window: a #GdkWindow
2544 * Checks whether the window has been mapped (with gdk_window_show() or
2545 * gdk_window_show_unraised()).
2547 * Return value: %TRUE if the window is mapped
2550 gdk_window_is_visible (GdkWindow *window)
2552 g_return_val_if_fail (GDK_IS_WINDOW (window), FALSE);
2554 return GDK_WINDOW_IS_MAPPED (window);
2558 * gdk_window_is_viewable:
2559 * @window: a #GdkWindow
2561 * Check if the window and all ancestors of the window are
2562 * mapped. (This is not necessarily "viewable" in the X sense, since
2563 * we only check as far as we have GDK window parents, not to the root
2566 * Return value: %TRUE if the window is viewable
2569 gdk_window_is_viewable (GdkWindow *window)
2571 g_return_val_if_fail (GDK_IS_WINDOW (window), FALSE);
2573 if (window->destroyed)
2576 return window->viewable;
2580 * gdk_window_get_state:
2581 * @window: a #GdkWindow
2583 * Gets the bitwise OR of the currently active window state flags,
2584 * from the #GdkWindowState enumeration.
2586 * Return value: window state bitfield
2589 gdk_window_get_state (GdkWindow *window)
2591 g_return_val_if_fail (GDK_IS_WINDOW (window), FALSE);
2593 return window->state;
2596 static cairo_content_t
2597 gdk_window_get_content (GdkWindow *window)
2599 cairo_surface_t *surface;
2600 cairo_content_t content;
2602 g_return_val_if_fail (GDK_IS_WINDOW (window), 0);
2604 surface = _gdk_window_ref_cairo_surface (window);
2605 content = cairo_surface_get_content (surface);
2606 cairo_surface_destroy (surface);
2611 /* This creates an empty "implicit" paint region for the impl window.
2612 * By itself this does nothing, but real paints to this window
2613 * or children of it can use this surface as backing to avoid allocating
2614 * multiple surfaces for subwindow rendering. When doing so they
2615 * add to the region of the implicit paint region, which will be
2616 * pushed to the window when the implicit paint region is ended.
2617 * Such paints should not copy anything to the window on paint end, but
2618 * should rely on the implicit paint end.
2619 * The implicit paint will be automatically ended if someone draws
2620 * directly to the window or a child window.
2623 gdk_window_begin_implicit_paint (GdkWindow *window, GdkRectangle *rect)
2625 GdkWindowPaint *paint;
2627 g_assert (gdk_window_has_impl (window));
2629 if (GDK_IS_PAINTABLE (window->impl))
2630 return FALSE; /* Implementation does double buffering */
2632 if (window->paint_stack != NULL ||
2633 window->implicit_paint != NULL)
2634 return FALSE; /* Don't stack implicit paints */
2636 /* Never do implicit paints for foreign windows, they don't need
2637 * double buffer combination since they have no client side children,
2638 * and creating surfaces for them is risky since they could disappear
2641 if (window->window_type == GDK_WINDOW_FOREIGN)
2644 paint = g_new (GdkWindowPaint, 1);
2645 paint->region = cairo_region_create (); /* Empty */
2646 paint->uses_implicit = FALSE;
2647 paint->flushed = FALSE;
2648 paint->surface = gdk_window_create_similar_surface (window,
2649 gdk_window_get_content (window),
2650 MAX (rect->width, 1),
2651 MAX (rect->height, 1));
2652 cairo_surface_set_device_offset (paint->surface, -rect->x, -rect->y);
2654 window->implicit_paint = paint;
2659 static cairo_surface_t *
2660 gdk_window_ref_impl_surface (GdkWindow *window)
2662 return GDK_WINDOW_IMPL_GET_CLASS (window->impl)->ref_cairo_surface (gdk_window_get_impl_window (window));
2666 gdk_cairo_create_for_impl (GdkWindow *window)
2668 cairo_surface_t *surface;
2671 surface = gdk_window_ref_impl_surface (window);
2672 cr = cairo_create (surface);
2674 cairo_surface_destroy (surface);
2679 /* Ensure that all content related to this (sub)window is pushed to the
2680 native region. If there is an active paint then that area is not
2681 pushed, in order to not show partially finished double buffers. */
2683 gdk_window_flush_implicit_paint (GdkWindow *window)
2685 GdkWindow *impl_window;
2686 GdkWindowPaint *paint;
2687 cairo_region_t *region;
2690 impl_window = gdk_window_get_impl_window (window);
2691 if (impl_window->implicit_paint == NULL)
2694 paint = impl_window->implicit_paint;
2695 paint->flushed = TRUE;
2696 region = cairo_region_copy (window->clip_region_with_children);
2698 /* Don't flush active double buffers, as that may show partially done
2700 for (list = window->paint_stack; list != NULL; list = list->next)
2702 GdkWindowPaint *tmp_paint = list->data;
2704 cairo_region_subtract (region, tmp_paint->region);
2707 cairo_region_translate (region, -window->abs_x, -window->abs_y);
2708 cairo_region_intersect (region, paint->region);
2710 if (!GDK_WINDOW_DESTROYED (window) && !cairo_region_is_empty (region))
2714 /* Remove flushed region from the implicit paint */
2715 cairo_region_subtract (paint->region, region);
2717 /* Some regions are valid, push these to window now */
2718 cr = gdk_cairo_create_for_impl (window);
2719 gdk_cairo_region (cr, region);
2721 cairo_set_source_surface (cr, paint->surface, 0, 0);
2722 cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
2727 cairo_region_destroy (region);
2730 /* Ends an implicit paint, paired with gdk_window_begin_implicit_paint returning TRUE */
2732 gdk_window_end_implicit_paint (GdkWindow *window)
2734 GdkWindowPaint *paint;
2736 g_assert (gdk_window_has_impl (window));
2738 g_assert (window->implicit_paint != NULL);
2740 paint = window->implicit_paint;
2742 window->implicit_paint = NULL;
2744 if (!GDK_WINDOW_DESTROYED (window) && !cairo_region_is_empty (paint->region))
2748 /* Some regions are valid, push these to window now */
2749 cr = gdk_cairo_create_for_impl (window);
2750 gdk_cairo_region (cr, paint->region);
2752 cairo_set_source_surface (cr, paint->surface, 0, 0);
2753 cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
2758 cairo_region_destroy (paint->region);
2760 cairo_surface_destroy (paint->surface);
2765 * gdk_window_begin_paint_rect:
2766 * @window: a #GdkWindow
2767 * @rectangle: rectangle you intend to draw to
2769 * A convenience wrapper around gdk_window_begin_paint_region() which
2770 * creates a rectangular region for you. See
2771 * gdk_window_begin_paint_region() for details.
2775 gdk_window_begin_paint_rect (GdkWindow *window,
2776 const GdkRectangle *rectangle)
2778 cairo_region_t *region;
2780 g_return_if_fail (GDK_IS_WINDOW (window));
2782 region = cairo_region_create_rectangle (rectangle);
2783 gdk_window_begin_paint_region (window, region);
2784 cairo_region_destroy (region);
2788 * gdk_window_begin_paint_region:
2789 * @window: a #GdkWindow
2790 * @region: region you intend to draw to
2792 * Indicates that you are beginning the process of redrawing @region.
2793 * A backing store (offscreen buffer) large enough to contain @region
2794 * will be created. The backing store will be initialized with the
2795 * background color or background surface for @window. Then, all
2796 * drawing operations performed on @window will be diverted to the
2797 * backing store. When you call gdk_window_end_paint(), the backing
2798 * store will be copied to @window, making it visible onscreen. Only
2799 * the part of @window contained in @region will be modified; that is,
2800 * drawing operations are clipped to @region.
2802 * The net result of all this is to remove flicker, because the user
2803 * sees the finished product appear all at once when you call
2804 * gdk_window_end_paint(). If you draw to @window directly without
2805 * calling gdk_window_begin_paint_region(), the user may see flicker
2806 * as individual drawing operations are performed in sequence. The
2807 * clipping and background-initializing features of
2808 * gdk_window_begin_paint_region() are conveniences for the
2809 * programmer, so you can avoid doing that work yourself.
2811 * When using GTK+, the widget system automatically places calls to
2812 * gdk_window_begin_paint_region() and gdk_window_end_paint() around
2813 * emissions of the expose_event signal. That is, if you're writing an
2814 * expose event handler, you can assume that the exposed area in
2815 * #GdkEventExpose has already been cleared to the window background,
2816 * is already set as the clip region, and already has a backing store.
2817 * Therefore in most cases, application code need not call
2818 * gdk_window_begin_paint_region(). (You can disable the automatic
2819 * calls around expose events on a widget-by-widget basis by calling
2820 * gtk_widget_set_double_buffered().)
2822 * If you call this function multiple times before calling the
2823 * matching gdk_window_end_paint(), the backing stores are pushed onto
2824 * a stack. gdk_window_end_paint() copies the topmost backing store
2825 * onscreen, subtracts the topmost region from all other regions in
2826 * the stack, and pops the stack. All drawing operations affect only
2827 * the topmost backing store in the stack. One matching call to
2828 * gdk_window_end_paint() is required for each call to
2829 * gdk_window_begin_paint_region().
2833 gdk_window_begin_paint_region (GdkWindow *window,
2834 const cairo_region_t *region)
2836 #ifdef USE_BACKING_STORE
2837 GdkRectangle clip_box;
2838 GdkWindowPaint *paint, *implicit_paint;
2839 GdkWindow *impl_window;
2842 g_return_if_fail (GDK_IS_WINDOW (window));
2844 if (GDK_WINDOW_DESTROYED (window))
2847 if (GDK_IS_PAINTABLE (window->impl))
2849 GdkPaintableIface *iface = GDK_PAINTABLE_GET_IFACE (window->impl);
2851 if (iface->begin_paint_region)
2852 iface->begin_paint_region ((GdkPaintable*)window->impl, window, region);
2857 impl_window = gdk_window_get_impl_window (window);
2858 implicit_paint = impl_window->implicit_paint;
2860 paint = g_new (GdkWindowPaint, 1);
2861 paint->region = cairo_region_copy (region);
2862 paint->region_tag = new_region_tag ();
2864 cairo_region_intersect (paint->region, window->clip_region_with_children);
2865 cairo_region_get_extents (paint->region, &clip_box);
2867 cairo_region_translate (paint->region, window->abs_x, window->abs_y);
2869 /* Mark the region as valid on the implicit paint */
2872 cairo_region_union (implicit_paint->region, paint->region);
2874 /* Convert back to normal coords */
2875 cairo_region_translate (paint->region, -window->abs_x, -window->abs_y);
2879 paint->uses_implicit = TRUE;
2880 paint->surface = cairo_surface_create_for_rectangle (implicit_paint->surface,
2881 window->abs_x + clip_box.x,
2882 window->abs_y + clip_box.y,
2883 MAX (clip_box.width, 1),
2884 MAX (clip_box.height, 1));
2888 paint->uses_implicit = FALSE;
2889 paint->surface = gdk_window_create_similar_surface (window,
2890 gdk_window_get_content (window),
2891 MAX (clip_box.width, 1),
2892 MAX (clip_box.height, 1));
2894 cairo_surface_set_device_offset (paint->surface, -clip_box.x, -clip_box.y);
2896 for (list = window->paint_stack; list != NULL; list = list->next)
2898 GdkWindowPaint *tmp_paint = list->data;
2900 cairo_region_subtract (tmp_paint->region, paint->region);
2903 window->paint_stack = g_slist_prepend (window->paint_stack, paint);
2905 if (!cairo_region_is_empty (paint->region))
2907 gdk_window_clear_backing_region (window,
2911 #endif /* USE_BACKING_STORE */
2915 * gdk_window_end_paint:
2916 * @window: a #GdkWindow
2918 * Indicates that the backing store created by the most recent call to
2919 * gdk_window_begin_paint_region() should be copied onscreen and
2920 * deleted, leaving the next-most-recent backing store or no backing
2921 * store at all as the active paint region. See
2922 * gdk_window_begin_paint_region() for full details. It is an error to
2923 * call this function without a matching
2924 * gdk_window_begin_paint_region() first.
2928 gdk_window_end_paint (GdkWindow *window)
2930 #ifdef USE_BACKING_STORE
2931 GdkWindow *composited;
2932 GdkWindowPaint *paint;
2933 GdkRectangle clip_box;
2934 cairo_region_t *full_clip;
2936 g_return_if_fail (GDK_IS_WINDOW (window));
2938 if (GDK_WINDOW_DESTROYED (window))
2941 if (GDK_IS_PAINTABLE (window->impl))
2943 GdkPaintableIface *iface = GDK_PAINTABLE_GET_IFACE (window->impl);
2945 if (iface->end_paint)
2946 iface->end_paint ((GdkPaintable*)window->impl);
2950 if (window->paint_stack == NULL)
2952 g_warning (G_STRLOC": no preceding call to gdk_window_begin_paint_region(), see documentation");
2956 paint = window->paint_stack->data;
2958 window->paint_stack = g_slist_delete_link (window->paint_stack,
2959 window->paint_stack);
2961 cairo_region_get_extents (paint->region, &clip_box);
2963 if (!paint->uses_implicit)
2967 gdk_window_flush_outstanding_moves (window);
2969 full_clip = cairo_region_copy (window->clip_region_with_children);
2970 cairo_region_intersect (full_clip, paint->region);
2972 cr = gdk_cairo_create (window);
2973 cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
2974 cairo_set_source_surface (cr, paint->surface, 0, 0);
2975 gdk_cairo_region (cr, full_clip);
2979 cairo_region_destroy (full_clip);
2982 cairo_surface_destroy (paint->surface);
2983 cairo_region_destroy (paint->region);
2986 /* find a composited window in our hierarchy to signal its
2987 * parent to redraw, calculating the clip box as we go...
2989 * stop if parent becomes NULL since then we'd have nowhere
2990 * to draw (ie: 'composited' will always be non-NULL here).
2992 for (composited = window;
2994 composited = composited->parent)
2996 clip_box.x += composited->x;
2997 clip_box.y += composited->y;
2998 clip_box.width = MIN (clip_box.width, composited->parent->width - clip_box.x);
2999 clip_box.height = MIN (clip_box.height, composited->parent->height - clip_box.y);
3001 if (composited->composited)
3003 gdk_window_invalidate_rect (GDK_WINDOW (composited->parent),
3008 #endif /* USE_BACKING_STORE */
3012 gdk_window_free_paint_stack (GdkWindow *window)
3014 if (window->paint_stack)
3016 GSList *tmp_list = window->paint_stack;
3020 GdkWindowPaint *paint = tmp_list->data;
3022 if (tmp_list == window->paint_stack)
3023 cairo_surface_destroy (paint->surface);
3025 cairo_region_destroy (paint->region);
3028 tmp_list = tmp_list->next;
3031 g_slist_free (window->paint_stack);
3032 window->paint_stack = NULL;
3037 do_move_region_bits_on_impl (GdkWindow *impl_window,
3038 cairo_region_t *dest_region, /* In impl window coords */
3041 GdkWindowImplClass *impl_class;
3043 impl_class = GDK_WINDOW_IMPL_GET_CLASS (impl_window->impl);
3045 impl_class->translate (impl_window, dest_region, dx, dy);
3048 static GdkWindowRegionMove *
3049 gdk_window_region_move_new (cairo_region_t *region,
3052 GdkWindowRegionMove *move;
3054 move = g_slice_new (GdkWindowRegionMove);
3055 move->dest_region = cairo_region_copy (region);
3063 gdk_window_region_move_free (GdkWindowRegionMove *move)
3065 cairo_region_destroy (move->dest_region);
3066 g_slice_free (GdkWindowRegionMove, move);
3070 append_move_region (GdkWindow *impl_window,
3071 cairo_region_t *new_dest_region,
3074 GdkWindowRegionMove *move, *old_move;
3075 cairo_region_t *new_total_region, *old_total_region;
3076 cairo_region_t *source_overlaps_destination;
3077 cairo_region_t *non_overwritten;
3078 gboolean added_move;
3081 if (cairo_region_is_empty (new_dest_region))
3084 /* In principle this could just append the move to the list of outstanding
3085 moves that will be replayed before drawing anything when we're handling
3086 exposes. However, we'd like to do a bit better since its commonly the case
3087 that we get multiple copies where A is copied to B and then B is copied
3088 to C, and we'd like to express this as a simple copy A to C operation. */
3090 /* We approach this by taking the new move and pushing it ahead of moves
3091 starting at the end of the list and stopping when its not safe to do so.
3092 It's not safe to push past a move if either the source of the new move
3093 is in the destination of the old move, or if the destination of the new
3094 move is in the source of the new move, or if the destination of the new
3095 move overlaps the destination of the old move. We simplify this by
3096 just comparing the total regions (src + dest) */
3097 new_total_region = cairo_region_copy (new_dest_region);
3098 cairo_region_translate (new_total_region, -dx, -dy);
3099 cairo_region_union (new_total_region, new_dest_region);
3102 for (l = g_list_last (impl_window->outstanding_moves); l != NULL; l = prev)
3107 old_total_region = cairo_region_copy (old_move->dest_region);
3108 cairo_region_translate (old_total_region, -old_move->dx, -old_move->dy);
3109 cairo_region_union (old_total_region, old_move->dest_region);
3111 cairo_region_intersect (old_total_region, new_total_region);
3112 /* If these regions intersect then its not safe to push the
3113 new region before the old one */
3114 if (!cairo_region_is_empty (old_total_region))
3116 /* The area where the new moves source overlaps the old ones
3118 source_overlaps_destination = cairo_region_copy (new_dest_region);
3119 cairo_region_translate (source_overlaps_destination, -dx, -dy);
3120 cairo_region_intersect (source_overlaps_destination, old_move->dest_region);
3121 cairo_region_translate (source_overlaps_destination, dx, dy);
3123 /* We can do all sort of optimizations here, but to do things safely it becomes
3124 quite complicated. However, a very common case is that you copy something first,
3125 then copy all that or a subset of it to a new location (i.e. if you scroll twice
3126 in the same direction). We'd like to detect this case and optimize it to one
3128 if (cairo_region_equal (source_overlaps_destination, new_dest_region))
3130 /* This means we might be able to replace the old move and the new one
3131 with the new one read from the old ones source, and a second copy of
3132 the non-overwritten parts of the old move. However, such a split
3133 is only valid if the source in the old move isn't overwritten
3134 by the destination of the new one */
3136 /* the new destination of old move if split is ok: */
3137 non_overwritten = cairo_region_copy (old_move->dest_region);
3138 cairo_region_subtract (non_overwritten, new_dest_region);
3139 /* move to source region */
3140 cairo_region_translate (non_overwritten, -old_move->dx, -old_move->dy);
3142 cairo_region_intersect (non_overwritten, new_dest_region);
3143 if (cairo_region_is_empty (non_overwritten))
3146 move = gdk_window_region_move_new (new_dest_region,
3150 impl_window->outstanding_moves =
3151 g_list_insert_before (impl_window->outstanding_moves,
3153 cairo_region_subtract (old_move->dest_region, new_dest_region);
3155 cairo_region_destroy (non_overwritten);
3158 cairo_region_destroy (source_overlaps_destination);
3159 cairo_region_destroy (old_total_region);
3162 cairo_region_destroy (old_total_region);
3165 cairo_region_destroy (new_total_region);
3169 move = gdk_window_region_move_new (new_dest_region, dx, dy);
3172 impl_window->outstanding_moves =
3173 g_list_prepend (impl_window->outstanding_moves,
3176 impl_window->outstanding_moves =
3177 g_list_insert_before (impl_window->outstanding_moves,
3182 /* Moves bits and update area by dx/dy in impl window.
3183 Takes ownership of region to avoid copy (because we may change it) */
3185 move_region_on_impl (GdkWindow *impl_window,
3186 cairo_region_t *region, /* In impl window coords */
3189 if ((dx == 0 && dy == 0) ||
3190 cairo_region_is_empty (region))
3192 cairo_region_destroy (region);
3196 g_assert (impl_window == gdk_window_get_impl_window (impl_window));
3198 /* Move any old invalid regions in the copy source area by dx/dy */
3199 if (impl_window->update_area)
3201 cairo_region_t *update_area;
3203 update_area = cairo_region_copy (region);
3205 /* Convert from target to source */
3206 cairo_region_translate (update_area, -dx, -dy);
3207 cairo_region_intersect (update_area, impl_window->update_area);
3208 /* We only copy the area, so keep the old update area invalid.
3209 It would be safe to remove it too, as code that uses
3210 move_region_on_impl generally also invalidate the source
3211 area. However, it would just use waste cycles. */
3214 cairo_region_translate (update_area, dx, dy);
3215 cairo_region_union (impl_window->update_area, update_area);
3217 /* This area of the destination is now invalid,
3218 so no need to copy to it. */
3219 cairo_region_subtract (region, update_area);
3221 cairo_region_destroy (update_area);
3224 /* If we're currently exposing this window, don't copy to this
3225 destination, as it will be overdrawn when the expose is done,
3226 instead invalidate it and repaint later. */
3227 if (impl_window->implicit_paint)
3229 GdkWindowPaint *implicit_paint = impl_window->implicit_paint;
3230 cairo_region_t *exposing;
3232 exposing = cairo_region_copy (implicit_paint->region);
3233 cairo_region_intersect (exposing, region);
3234 cairo_region_subtract (region, exposing);
3236 impl_window_add_update_area (impl_window, exposing);
3237 cairo_region_destroy (exposing);
3240 append_move_region (impl_window, region, dx, dy);
3242 cairo_region_destroy (region);
3245 /* Flushes all outstanding changes to the window, call this
3246 * before drawing directly to the window (i.e. outside a begin/end_paint pair).
3249 gdk_window_flush_outstanding_moves (GdkWindow *window)
3251 GdkWindow *impl_window;
3252 GList *l, *outstanding;
3253 GdkWindowRegionMove *move;
3255 impl_window = gdk_window_get_impl_window (window);
3256 outstanding = impl_window->outstanding_moves;
3257 impl_window->outstanding_moves = NULL;
3259 for (l = outstanding; l != NULL; l = l->next)
3263 do_move_region_bits_on_impl (impl_window,
3264 move->dest_region, move->dx, move->dy);
3266 gdk_window_region_move_free (move);
3269 g_list_free (outstanding);
3274 * @window: a #GdkWindow
3276 * Flush all outstanding cached operations on a window, leaving the
3277 * window in a state which reflects all that has been drawn before.
3279 * Gdk uses multiple kinds of caching to get better performance and
3280 * nicer drawing. For instance, during exposes all paints to a window
3281 * using double buffered rendering are keep on a surface until the last
3282 * window has been exposed. It also delays window moves/scrolls until
3283 * as long as possible until next update to avoid tearing when moving
3286 * Normally this should be completely invisible to applications, as
3287 * we automatically flush the windows when required, but this might
3288 * be needed if you for instance mix direct native drawing with
3289 * gdk drawing. For Gtk widgets that don't use double buffering this
3290 * will be called automatically before sending the expose event.
3295 gdk_window_flush (GdkWindow *window)
3297 gdk_window_flush_outstanding_moves (window);
3298 gdk_window_flush_implicit_paint (window);
3301 /* If we're about to move/resize or otherwise change the
3302 * hierarchy of a client side window in an impl and we're
3303 * called from an expose event handler then we need to
3304 * flush any already painted parts of the implicit paint
3305 * that are not part of the current paint, as these may
3306 * be used when scrolling or may overdraw the changes
3307 * caused by the hierarchy change.
3310 gdk_window_flush_if_exposing (GdkWindow *window)
3312 GdkWindow *impl_window;
3314 impl_window = gdk_window_get_impl_window (window);
3316 /* If we're in an implicit paint (i.e. in an expose handler, flush
3317 all the already finished exposes to get things to an uptodate state. */
3318 if (impl_window->implicit_paint)
3319 gdk_window_flush (window);
3324 gdk_window_flush_recursive_helper (GdkWindow *window,
3325 GdkWindowImpl *impl)
3330 for (l = window->children; l != NULL; l = l->next)
3334 if (child->impl == impl)
3335 /* Same impl, ignore */
3336 gdk_window_flush_recursive_helper (child, impl);
3338 gdk_window_flush_recursive (child);
3343 gdk_window_flush_recursive (GdkWindow *window)
3345 gdk_window_flush (window);
3346 gdk_window_flush_recursive_helper (window, window->impl);
3350 * gdk_window_get_clip_region:
3351 * @window: a #GdkWindow
3353 * Computes the region of a window that potentially can be written
3354 * to by drawing primitives. This region may not take into account
3355 * other factors such as if the window is obscured by other windows,
3356 * but no area outside of this region will be affected by drawing
3359 * Returns: a #cairo_region_t. This must be freed with cairo_region_destroy()
3360 * when you are done.
3363 gdk_window_get_clip_region (GdkWindow *window)
3365 cairo_region_t *result;
3367 g_return_val_if_fail (GDK_WINDOW (window), NULL);
3369 result = cairo_region_copy (window->clip_region);
3371 if (window->paint_stack)
3373 cairo_region_t *paint_region = cairo_region_create ();
3374 GSList *tmp_list = window->paint_stack;
3378 GdkWindowPaint *paint = tmp_list->data;
3380 cairo_region_union (paint_region, paint->region);
3382 tmp_list = tmp_list->next;
3385 cairo_region_intersect (result, paint_region);
3386 cairo_region_destroy (paint_region);
3393 * gdk_window_get_visible_region:
3394 * @window: a #GdkWindow
3396 * Computes the region of the @window that is potentially visible.
3397 * This does not necessarily take into account if the window is
3398 * obscured by other windows, but no area outside of this region
3401 * Returns: a #cairo_region_t. This must be freed with cairo_region_destroy()
3402 * when you are done.
3405 gdk_window_get_visible_region (GdkWindow *window)
3407 g_return_val_if_fail (GDK_IS_WINDOW (window), NULL);
3409 return cairo_region_copy (window->clip_region);
3413 setup_backing_rect (GdkWindow *window, GdkWindowPaint *paint, int x_offset_cairo, int y_offset_cairo)
3415 GdkWindow *bg_window;
3416 cairo_pattern_t *pattern = NULL;
3417 int x_offset = 0, y_offset = 0;
3420 cr = cairo_create (paint->surface);
3422 for (bg_window = window; bg_window; bg_window = bg_window->parent)
3424 pattern = gdk_window_get_background_pattern (bg_window);
3428 x_offset += bg_window->x;
3429 y_offset += bg_window->y;
3434 cairo_translate (cr, -x_offset, -y_offset);
3435 cairo_set_source (cr, pattern);
3436 cairo_translate (cr, x_offset, y_offset);
3439 cairo_set_source_rgb (cr, 0, 0, 0);
3445 gdk_window_clear_backing_region (GdkWindow *window,
3446 cairo_region_t *region)
3448 GdkWindowPaint *paint = window->paint_stack->data;
3449 cairo_region_t *clip;
3450 GdkRectangle clipbox;
3453 if (GDK_WINDOW_DESTROYED (window))
3456 cr = setup_backing_rect (window, paint, 0, 0);
3458 clip = cairo_region_copy (paint->region);
3459 cairo_region_intersect (clip, region);
3460 cairo_region_get_extents (clip, &clipbox);
3462 gdk_cairo_region (cr, clip);
3467 cairo_region_destroy (clip);
3471 gdk_window_clear_backing_region_direct (GdkWindow *window,
3472 cairo_region_t *region)
3474 GdkWindowPaint paint;
3475 cairo_region_t *clip;
3476 GdkRectangle clipbox;
3479 if (GDK_WINDOW_DESTROYED (window))
3482 paint.surface = _gdk_window_ref_cairo_surface (window);
3484 cr = setup_backing_rect (window, &paint, 0, 0);
3486 clip = cairo_region_copy (window->clip_region_with_children);
3487 cairo_region_intersect (clip, region);
3488 cairo_region_get_extents (clip, &clipbox);
3490 gdk_cairo_region (cr, clip);
3495 cairo_region_destroy (clip);
3496 cairo_surface_destroy (paint.surface);
3501 gdk_window_clear_region_internal (GdkWindow *window,
3502 cairo_region_t *region)
3504 if (window->paint_stack)
3505 gdk_window_clear_backing_region (window, region);
3507 gdk_window_clear_backing_region_direct (window, region);
3511 gdk_window_drop_cairo_surface (GdkWindow *window)
3513 if (window->cairo_surface)
3515 cairo_surface_finish (window->cairo_surface);
3516 cairo_surface_set_user_data (window->cairo_surface, &gdk_window_cairo_key,
3518 window->cairo_surface = NULL;
3523 gdk_window_cairo_surface_destroy (void *data)
3525 GdkWindow *window = data;
3527 window->cairo_surface = NULL;
3530 static cairo_surface_t *
3531 gdk_window_create_cairo_surface (GdkWindow *window,
3535 cairo_surface_t *surface, *subsurface;
3537 surface = gdk_window_ref_impl_surface (window);
3538 if (gdk_window_has_impl (window))
3541 subsurface = cairo_surface_create_for_rectangle (surface,
3546 cairo_surface_destroy (surface);
3552 _gdk_window_ref_cairo_surface (GdkWindow *window)
3554 cairo_surface_t *surface;
3556 g_return_val_if_fail (GDK_IS_WINDOW (window), NULL);
3558 if (window->paint_stack)
3560 GdkWindowPaint *paint = window->paint_stack->data;
3562 surface = paint->surface;
3563 cairo_surface_reference (surface);
3568 /* This will be drawing directly to the window, so flush implicit paint */
3569 gdk_window_flush (window);
3571 if (!window->cairo_surface)
3573 window->cairo_surface = gdk_window_create_cairo_surface (window,
3577 if (window->cairo_surface)
3579 cairo_surface_set_user_data (window->cairo_surface, &gdk_window_cairo_key,
3580 window, gdk_window_cairo_surface_destroy);
3584 cairo_surface_reference (window->cairo_surface);
3586 surface = window->cairo_surface;
3594 * @window: a #GdkWindow
3596 * Creates a Cairo context for drawing to @window.
3599 * Note that calling cairo_reset_clip() on the resulting #cairo_t will
3600 * produce undefined results, so avoid it at all costs.
3603 * Return value: A newly created Cairo context. Free with
3604 * cairo_destroy() when you are done drawing.
3609 gdk_cairo_create (GdkWindow *window)
3611 cairo_surface_t *surface;
3614 g_return_val_if_fail (GDK_IS_WINDOW (window), NULL);
3616 surface = _gdk_window_ref_cairo_surface (window);
3617 cr = cairo_create (surface);
3619 if (!window->paint_stack)
3621 gdk_cairo_region (cr, window->clip_region_with_children);
3626 GdkWindowPaint *paint = window->paint_stack->data;
3628 /* Only needs to clip to region if piggybacking
3629 on an implicit paint */
3630 if (paint->uses_implicit)
3632 gdk_cairo_region (cr, paint->region);
3637 cairo_surface_destroy (surface);
3642 /* Code for dirty-region queueing
3644 static GSList *update_windows = NULL;
3645 static guint update_idle = 0;
3646 static gboolean debug_updates = FALSE;
3648 static inline gboolean
3649 gdk_window_is_ancestor (GdkWindow *window,
3650 GdkWindow *ancestor)
3654 GdkWindow *parent = window->parent;
3656 if (parent == ancestor)
3666 gdk_window_add_update_window (GdkWindow *window)
3669 GSList *prev = NULL;
3670 gboolean has_ancestor_in_list = FALSE;
3672 for (tmp = update_windows; tmp; tmp = tmp->next)
3674 GdkWindow *parent = window->parent;
3676 /* check if tmp is an ancestor of "window"; if it is, set a
3677 * flag indicating that all following windows are either
3678 * children of "window" or from a differen hierarchy
3680 if (!has_ancestor_in_list && gdk_window_is_ancestor (window, tmp->data))
3681 has_ancestor_in_list = TRUE;
3683 /* insert in reverse stacking order when adding around siblings,
3684 * so processing updates properly paints over lower stacked windows
3686 if (parent == GDK_WINDOW (tmp->data)->parent)
3688 gint index = g_list_index (parent->children, window);
3689 for (; tmp && parent == GDK_WINDOW (tmp->data)->parent; tmp = tmp->next)
3691 gint sibling_index = g_list_index (parent->children, tmp->data);
3692 if (index > sibling_index)
3696 /* here, tmp got advanced past all lower stacked siblings */
3697 tmp = g_slist_prepend (tmp, window);
3701 update_windows = tmp;
3705 /* if "window" has an ancestor in the list and tmp is one of
3706 * "window's" children, insert "window" before tmp
3708 if (has_ancestor_in_list && gdk_window_is_ancestor (tmp->data, window))
3710 tmp = g_slist_prepend (tmp, window);
3715 update_windows = tmp;
3719 /* if we're at the end of the list and had an ancestor it it,
3720 * append to the list
3722 if (! tmp->next && has_ancestor_in_list)
3724 tmp = g_slist_append (tmp, window);
3731 /* if all above checks failed ("window" is from a different
3732 * hierarchy than what is already in the list) or the list is
3735 update_windows = g_slist_prepend (update_windows, window);
3739 gdk_window_remove_update_window (GdkWindow *window)
3741 update_windows = g_slist_remove (update_windows, window);
3745 gdk_window_update_idle (gpointer data)
3747 gdk_window_process_all_updates ();
3753 gdk_window_is_toplevel_frozen (GdkWindow *window)
3755 GdkWindow *toplevel;
3757 toplevel = gdk_window_get_toplevel (window);
3759 return toplevel->update_and_descendants_freeze_count > 0;
3763 gdk_window_schedule_update (GdkWindow *window)
3766 (window->update_freeze_count ||
3767 gdk_window_is_toplevel_frozen (window)))
3772 gdk_threads_add_idle_full (GDK_PRIORITY_REDRAW,
3773 gdk_window_update_idle,
3778 _gdk_window_process_updates_recurse (GdkWindow *window,
3779 cairo_region_t *expose_region)
3782 cairo_region_t *child_region;
3784 GList *l, *children;
3786 if (cairo_region_is_empty (expose_region))
3789 if (gdk_window_is_offscreen (window->impl_window) &&
3790 window == window->impl_window)
3791 _gdk_window_add_damage ((GdkWindow *) window->impl_window, expose_region);
3793 /* Make this reentrancy safe for expose handlers freeing windows */
3794 children = g_list_copy (window->children);
3795 g_list_foreach (children, (GFunc)g_object_ref, NULL);
3797 /* Iterate over children, starting at topmost */
3798 for (l = children; l != NULL; l = l->next)
3802 if (child->destroyed || !GDK_WINDOW_IS_MAPPED (child) || child->input_only || child->composited)
3805 /* Ignore offscreen children, as they don't draw in their parent and
3806 * don't take part in the clipping */
3807 if (gdk_window_is_offscreen (child))
3812 r.width = child->width;
3813 r.height = child->height;
3815 child_region = cairo_region_create_rectangle (&r);
3818 /* Adjust shape region to parent window coords */
3819 cairo_region_translate (child->shape, child->x, child->y);
3820 cairo_region_intersect (child_region, child->shape);
3821 cairo_region_translate (child->shape, -child->x, -child->y);
3824 if (child->impl == window->impl)
3826 /* Client side child, expose */
3827 cairo_region_intersect (child_region, expose_region);
3828 cairo_region_subtract (expose_region, child_region);
3829 cairo_region_translate (child_region, -child->x, -child->y);
3830 _gdk_window_process_updates_recurse ((GdkWindow *)child, child_region);
3834 /* Native child, just remove area from expose region */
3835 cairo_region_subtract (expose_region, child_region);
3837 cairo_region_destroy (child_region);
3840 g_list_foreach (children, (GFunc)g_object_unref, NULL);
3841 g_list_free (children);
3843 if (!cairo_region_is_empty (expose_region) &&
3846 if (window->event_mask & GDK_EXPOSURE_MASK)
3850 event.expose.type = GDK_EXPOSE;
3851 event.expose.window = g_object_ref (window);
3852 event.expose.send_event = FALSE;
3853 event.expose.count = 0;
3854 event.expose.region = expose_region;
3855 cairo_region_get_extents (expose_region, &event.expose.area);
3857 _gdk_event_emit (&event);
3859 g_object_unref (window);
3861 else if (window->window_type != GDK_WINDOW_FOREIGN)
3863 /* No exposure mask set, so nothing will be drawn, the
3864 * app relies on the background being what it specified
3865 * for the window. So, we need to clear this manually.
3867 * For foreign windows if expose is not set that generally
3868 * means some other client paints them, so don't clear
3871 * We use begin/end_paint around the clear so that we can
3872 * piggyback on the implicit paint */
3874 gdk_window_begin_paint_region (window, expose_region);
3875 gdk_window_clear_region_internal (window, expose_region);
3876 gdk_window_end_paint (window);
3881 /* Process and remove any invalid area on the native window by creating
3882 * expose events for the window and all non-native descendants.
3883 * Also processes any outstanding moves on the window before doing
3884 * any drawing. Note that its possible to have outstanding moves without
3885 * any invalid area as we use the update idle mechanism to coalesce
3886 * multiple moves as well as multiple invalidations.
3889 gdk_window_process_updates_internal (GdkWindow *window)
3891 GdkWindowImplClass *impl_class;
3892 gboolean save_region = FALSE;
3893 GdkRectangle clip_box;
3895 /* Ensure the window lives while updating it */
3896 g_object_ref (window);
3898 /* If an update got queued during update processing, we can get a
3899 * window in the update queue that has an empty update_area.
3902 if (window->update_area)
3904 cairo_region_t *update_area = window->update_area;
3905 window->update_area = NULL;
3907 if (gdk_window_is_viewable (window))
3909 cairo_region_t *expose_region;
3910 gboolean end_implicit;
3912 /* Clip to part visible in toplevel */
3913 cairo_region_intersect (update_area, window->clip_region);
3917 /* Make sure we see the red invalid area before redrawing. */
3918 gdk_display_sync (gdk_window_get_display (window));
3922 /* At this point we will be completely redrawing all of update_area.
3923 * If we have any outstanding moves that end up moving stuff inside
3924 * this area we don't actually need to move that as that part would
3925 * be overdrawn by the expose anyway. So, in order to copy less data
3926 * we remove these areas from the outstanding moves.
3928 if (window->outstanding_moves)
3930 GdkWindowRegionMove *move;
3931 cairo_region_t *remove;
3934 remove = cairo_region_copy (update_area);
3935 /* We iterate backwards, starting from the state that would be
3936 if we had applied all the moves. */
3937 for (l = g_list_last (window->outstanding_moves); l != NULL; l = prev)
3942 /* Don't need this area */
3943 cairo_region_subtract (move->dest_region, remove);
3945 /* However if any of the destination we do need has a source
3946 in the updated region we do need that as a destination for
3947 the earlier moves */
3948 cairo_region_translate (move->dest_region, -move->dx, -move->dy);
3949 cairo_region_subtract (remove, move->dest_region);
3951 if (cairo_region_is_empty (move->dest_region))
3953 gdk_window_region_move_free (move);
3954 window->outstanding_moves =
3955 g_list_delete_link (window->outstanding_moves, l);
3957 else /* move back */
3958 cairo_region_translate (move->dest_region, move->dx, move->dy);
3960 cairo_region_destroy (remove);
3963 /* By now we a set of window moves that should be applied, and then
3964 * an update region that should be repainted. A trivial implementation
3965 * would just do that in order, however in order to get nicer drawing
3966 * we do some tricks:
3968 * First of all, each subwindow expose may be double buffered by
3969 * itself (depending on widget setting) via
3970 * gdk_window_begin/end_paint(). But we also do an "implicit" paint,
3971 * creating a single surface the size of the invalid area on the
3972 * native window which all the individual normal paints will draw
3973 * into. This way in the normal case there will be only one surface
3974 * allocated and only once surface draw done for all the windows
3975 * in this native window.
3976 * There are a couple of reasons this may fail, for instance, some
3977 * backends (like quartz) do its own double buffering, so we disable
3978 * gdk double buffering there. Secondly, some subwindow could be
3979 * non-double buffered and draw directly to the window outside a
3980 * begin/end_paint pair. That will be lead to a gdk_window_flush
3981 * which immediately executes all outstanding moves and paints+removes
3982 * the implicit paint (further paints will allocate their own surfaces).
3984 * Secondly, in the case of implicit double buffering we expose all
3985 * the child windows into the implicit surface before we execute
3986 * the outstanding moves. This way we minimize the time between
3987 * doing the moves and rendering the new update area, thus minimizing
3988 * flashing. Of course, if any subwindow is non-double buffered we
3989 * well flush earlier than that.
3991 * Thirdly, after having done the outstanding moves we queue an
3992 * "antiexpose" on the area that will be drawn by the expose, which
3993 * means that any invalid region on the native window side before
3994 * the first expose drawing operation will be discarded, as it
3995 * has by then been overdrawn with valid data. This means we can
3996 * avoid doing the unnecessary repaint any outstanding expose events.
3999 cairo_region_get_extents (update_area, &clip_box);
4000 end_implicit = gdk_window_begin_implicit_paint (window, &clip_box);
4001 expose_region = cairo_region_copy (update_area);
4002 impl_class = GDK_WINDOW_IMPL_GET_CLASS (window->impl);
4005 /* Rendering is not double buffered by gdk, do outstanding
4006 * moves and queue antiexposure immediately. No need to do
4008 gdk_window_flush_outstanding_moves (window);
4009 save_region = impl_class->queue_antiexpose (window, update_area);
4011 /* Render the invalid areas to the implicit paint, by sending exposes.
4012 * May flush if non-double buffered widget draw. */
4013 impl_class->process_updates_recurse (window, expose_region);
4017 /* Do moves right before exposes are rendered to the window */
4018 gdk_window_flush_outstanding_moves (window);
4020 /* By this time we know that any outstanding expose for this
4021 * area is invalid and we can avoid it, so queue an antiexpose.
4022 * we have already started drawing to the window, so it would
4023 * be to late to anti-expose now. Since this is merely an
4024 * optimization we just avoid doing it at all in that case.
4026 if (window->implicit_paint != NULL && !window->implicit_paint->flushed)
4027 save_region = impl_class->queue_antiexpose (window, update_area);
4029 gdk_window_end_implicit_paint (window);
4031 cairo_region_destroy (expose_region);
4034 cairo_region_destroy (update_area);
4037 if (window->outstanding_moves)
4039 /* Flush any outstanding moves, may happen if we moved a window but got
4040 no actual invalid area */
4041 gdk_window_flush_outstanding_moves (window);
4044 g_object_unref (window);
4048 flush_all_displays (void)
4050 GSList *displays, *l;
4052 displays = gdk_display_manager_list_displays (gdk_display_manager_get ());
4053 for (l = displays; l; l = l->next)
4054 gdk_display_flush (l->data);
4056 g_slist_free (displays);
4060 before_process_all_updates (void)
4062 GSList *displays, *l;
4063 GdkDisplayClass *display_class;
4065 displays = gdk_display_manager_list_displays (gdk_display_manager_get ());
4066 display_class = GDK_DISPLAY_GET_CLASS (displays->data);
4067 for (l = displays; l; l = l->next)
4068 display_class->before_process_all_updates (l->data);
4070 g_slist_free (displays);
4074 after_process_all_updates (void)
4076 GSList *displays, *l;
4077 GdkDisplayClass *display_class;
4079 displays = gdk_display_manager_list_displays (gdk_display_manager_get ());
4080 display_class = GDK_DISPLAY_GET_CLASS (displays->data);
4081 for (l = displays; l; l = l->next)
4082 display_class->after_process_all_updates (l->data);
4084 g_slist_free (displays);
4087 /* Currently it is not possible to override
4088 * gdk_window_process_all_updates in the same manner as
4089 * gdk_window_process_updates and gdk_window_invalidate_maybe_recurse
4090 * by implementing the GdkPaintable interface. If in the future a
4091 * backend would need this, the right solution would be to add a
4092 * method to GdkDisplay that can be optionally
4093 * NULL. gdk_window_process_all_updates can then walk the list of open
4094 * displays and call the mehod.
4098 * gdk_window_process_all_updates:
4100 * Calls gdk_window_process_updates() for all windows (see #GdkWindow)
4101 * in the application.
4105 gdk_window_process_all_updates (void)
4107 GSList *old_update_windows = update_windows;
4108 GSList *tmp_list = update_windows;
4109 static gboolean in_process_all_updates = FALSE;
4110 static gboolean got_recursive_update = FALSE;
4112 if (in_process_all_updates)
4114 /* We can't do this now since that would recurse, so
4115 delay it until after the recursion is done. */
4116 got_recursive_update = TRUE;
4121 in_process_all_updates = TRUE;
4122 got_recursive_update = FALSE;
4125 g_source_remove (update_idle);
4127 update_windows = NULL;
4130 before_process_all_updates ();
4132 g_slist_foreach (old_update_windows, (GFunc)g_object_ref, NULL);
4136 GdkWindow *window = tmp_list->data;
4138 if (!GDK_WINDOW_DESTROYED (window))
4140 if (window->update_freeze_count ||
4141 gdk_window_is_toplevel_frozen (window))
4142 gdk_window_add_update_window (window);
4144 gdk_window_process_updates_internal (window);
4147 g_object_unref (window);
4148 tmp_list = tmp_list->next;
4151 g_slist_free (old_update_windows);
4153 flush_all_displays ();
4155 after_process_all_updates ();
4157 in_process_all_updates = FALSE;
4159 /* If we ignored a recursive call, schedule a
4160 redraw now so that it eventually happens,
4161 otherwise we could miss an update if nothing
4162 else schedules an update. */
4163 if (got_recursive_update && !update_idle)
4165 gdk_threads_add_idle_full (GDK_PRIORITY_REDRAW,
4166 gdk_window_update_idle,
4171 * gdk_window_process_updates:
4172 * @window: a #GdkWindow
4173 * @update_children: whether to also process updates for child windows
4175 * Sends one or more expose events to @window. The areas in each
4176 * expose event will cover the entire update area for the window (see
4177 * gdk_window_invalidate_region() for details). Normally GDK calls
4178 * gdk_window_process_all_updates() on your behalf, so there's no
4179 * need to call this function unless you want to force expose events
4180 * to be delivered immediately and synchronously (vs. the usual
4181 * case, where GDK delivers them in an idle handler). Occasionally
4182 * this is useful to produce nicer scrolling behavior, for example.
4186 gdk_window_process_updates (GdkWindow *window,
4187 gboolean update_children)
4189 GdkWindow *impl_window;
4191 g_return_if_fail (GDK_IS_WINDOW (window));
4193 if (GDK_WINDOW_DESTROYED (window))
4196 /* Make sure the window lives during the expose callouts */
4197 g_object_ref (window);
4199 impl_window = gdk_window_get_impl_window (window);
4200 if ((impl_window->update_area ||
4201 impl_window->outstanding_moves) &&
4202 !impl_window->update_freeze_count &&
4203 !gdk_window_is_toplevel_frozen (window) &&
4205 /* Don't recurse into process_updates_internal, we'll
4206 * do the update later when idle instead. */
4207 impl_window->implicit_paint == NULL)
4209 gdk_window_process_updates_internal ((GdkWindow *)impl_window);
4210 gdk_window_remove_update_window ((GdkWindow *)impl_window);
4213 if (update_children)
4215 /* process updates in reverse stacking order so composition or
4216 * painting over achieves the desired effect for offscreen windows
4218 GList *node, *children;
4220 children = g_list_copy (window->children);
4221 g_list_foreach (children, (GFunc)g_object_ref, NULL);
4223 for (node = g_list_last (children); node; node = node->prev)
4225 gdk_window_process_updates (node->data, TRUE);
4226 g_object_unref (node->data);
4229 g_list_free (children);
4232 g_object_unref (window);
4236 gdk_window_invalidate_rect_full (GdkWindow *window,
4237 const GdkRectangle *rect,
4238 gboolean invalidate_children,
4241 GdkRectangle window_rect;
4242 cairo_region_t *region;
4244 g_return_if_fail (GDK_IS_WINDOW (window));
4246 if (GDK_WINDOW_DESTROYED (window))
4249 if (window->input_only || !window->viewable)
4256 window_rect.width = window->width;
4257 window_rect.height = window->height;
4258 rect = &window_rect;
4261 region = cairo_region_create_rectangle (rect);
4262 gdk_window_invalidate_region_full (window, region, invalidate_children, clear_bg);
4263 cairo_region_destroy (region);
4267 * gdk_window_invalidate_rect:
4268 * @window: a #GdkWindow
4269 * @rect: (allow-none): rectangle to invalidate or %NULL to invalidate the whole
4271 * @invalidate_children: whether to also invalidate child windows
4273 * A convenience wrapper around gdk_window_invalidate_region() which
4274 * invalidates a rectangular region. See
4275 * gdk_window_invalidate_region() for details.
4278 gdk_window_invalidate_rect (GdkWindow *window,
4279 const GdkRectangle *rect,
4280 gboolean invalidate_children)
4282 gdk_window_invalidate_rect_full (window, rect, invalidate_children, CLEAR_BG_NONE);
4286 draw_ugly_color (GdkWindow *window,
4287 const cairo_region_t *region)
4291 cr = gdk_cairo_create (window);
4292 /* Draw ugly color all over the newly-invalid region */
4293 cairo_set_source_rgb (cr, 50000/65535., 10000/65535., 10000/65535.);
4294 gdk_cairo_region (cr, region);
4301 impl_window_add_update_area (GdkWindow *impl_window,
4302 cairo_region_t *region)
4304 if (impl_window->update_area)
4305 cairo_region_union (impl_window->update_area, region);
4308 gdk_window_add_update_window (impl_window);
4309 impl_window->update_area = cairo_region_copy (region);
4310 gdk_window_schedule_update (impl_window);
4314 /* clear_bg controls if the region will be cleared to
4315 * the background pattern if the exposure mask is not
4316 * set for the window, whereas this might not otherwise be
4317 * done (unless necessary to emulate background settings).
4318 * Set this to CLEAR_BG_WINCLEARED or CLEAR_BG_ALL if you
4319 * need to clear the background, such as when exposing the area beneath a
4320 * hidden or moved window, but not when an app requests repaint or when the
4321 * windowing system exposes a newly visible area (because then the windowing
4322 * system has already cleared the area).
4325 gdk_window_invalidate_maybe_recurse_full (GdkWindow *window,
4326 const cairo_region_t *region,
4328 GdkWindowChildFunc child_func,
4331 GdkWindow *impl_window;
4332 cairo_region_t *visible_region;
4335 g_return_if_fail (GDK_IS_WINDOW (window));
4337 if (GDK_WINDOW_DESTROYED (window))
4340 if (window->input_only ||
4341 !window->viewable ||
4342 cairo_region_is_empty (region) ||
4343 window->window_type == GDK_WINDOW_ROOT)
4346 visible_region = gdk_window_get_visible_region (window);
4347 cairo_region_intersect (visible_region, region);
4349 tmp_list = window->children;
4352 GdkWindow *child = tmp_list->data;
4354 if (!child->input_only)
4356 cairo_region_t *child_region;
4357 GdkRectangle child_rect;
4359 child_rect.x = child->x;
4360 child_rect.y = child->y;
4361 child_rect.width = child->width;
4362 child_rect.height = child->height;
4363 child_region = cairo_region_create_rectangle (&child_rect);
4365 /* remove child area from the invalid area of the parent */
4366 if (GDK_WINDOW_IS_MAPPED (child) && !child->shaped &&
4367 !child->composited &&
4368 !gdk_window_is_offscreen (child))
4369 cairo_region_subtract (visible_region, child_region);
4371 if (child_func && (*child_func) ((GdkWindow *)child, user_data))
4373 cairo_region_t *tmp = cairo_region_copy (region);
4375 cairo_region_translate (tmp, - child_rect.x, - child_rect.y);
4376 cairo_region_translate (child_region, - child_rect.x, - child_rect.y);
4377 cairo_region_intersect (child_region, tmp);
4379 gdk_window_invalidate_maybe_recurse_full ((GdkWindow *)child,
4380 child_region, clear_bg, child_func, user_data);
4382 cairo_region_destroy (tmp);
4385 cairo_region_destroy (child_region);
4388 tmp_list = tmp_list->next;
4391 impl_window = gdk_window_get_impl_window (window);
4393 if (!cairo_region_is_empty (visible_region) ||
4394 /* Even if we're not exposing anything, make sure we process
4395 idles for windows with outstanding moves */
4396 (impl_window->outstanding_moves != NULL &&
4397 impl_window->update_area == NULL))
4400 draw_ugly_color (window, region);
4402 /* Convert to impl coords */
4403 cairo_region_translate (visible_region, window->abs_x, window->abs_y);
4405 /* Only invalidate area if app requested expose events or if
4406 we need to clear the area (by request or to emulate background
4407 clearing for non-native windows or native windows with no support
4408 for window backgrounds */
4409 if (window->event_mask & GDK_EXPOSURE_MASK ||
4410 clear_bg == CLEAR_BG_ALL ||
4411 clear_bg == CLEAR_BG_WINCLEARED)
4412 impl_window_add_update_area (impl_window, visible_region);
4415 cairo_region_destroy (visible_region);
4419 * gdk_window_invalidate_maybe_recurse:
4420 * @window: a #GdkWindow
4421 * @region: a #cairo_region_t
4422 * @child_func: (scope call) (allow-none): function to use to decide if to
4423 * recurse to a child, %NULL means never recurse.
4424 * @user_data: data passed to @child_func
4426 * Adds @region to the update area for @window. The update area is the
4427 * region that needs to be redrawn, or "dirty region." The call
4428 * gdk_window_process_updates() sends one or more expose events to the
4429 * window, which together cover the entire update area. An
4430 * application would normally redraw the contents of @window in
4431 * response to those expose events.
4433 * GDK will call gdk_window_process_all_updates() on your behalf
4434 * whenever your program returns to the main loop and becomes idle, so
4435 * normally there's no need to do that manually, you just need to
4436 * invalidate regions that you know should be redrawn.
4438 * The @child_func parameter controls whether the region of
4439 * each child window that intersects @region will also be invalidated.
4440 * Only children for which @child_func returns TRUE will have the area
4444 gdk_window_invalidate_maybe_recurse (GdkWindow *window,
4445 const cairo_region_t *region,
4446 GdkWindowChildFunc child_func,
4449 gdk_window_invalidate_maybe_recurse_full (window, region, CLEAR_BG_NONE,
4450 child_func, user_data);
4454 true_predicate (GdkWindow *window,
4461 gdk_window_invalidate_region_full (GdkWindow *window,
4462 const cairo_region_t *region,
4463 gboolean invalidate_children,
4466 gdk_window_invalidate_maybe_recurse_full (window, region, clear_bg,
4467 invalidate_children ?
4468 true_predicate : (gboolean (*) (GdkWindow *, gpointer))NULL,
4473 * gdk_window_invalidate_region:
4474 * @window: a #GdkWindow
4475 * @region: a #cairo_region_t
4476 * @invalidate_children: %TRUE to also invalidate child windows
4478 * Adds @region to the update area for @window. The update area is the
4479 * region that needs to be redrawn, or "dirty region." The call
4480 * gdk_window_process_updates() sends one or more expose events to the
4481 * window, which together cover the entire update area. An
4482 * application would normally redraw the contents of @window in
4483 * response to those expose events.
4485 * GDK will call gdk_window_process_all_updates() on your behalf
4486 * whenever your program returns to the main loop and becomes idle, so
4487 * normally there's no need to do that manually, you just need to
4488 * invalidate regions that you know should be redrawn.
4490 * The @invalidate_children parameter controls whether the region of
4491 * each child window that intersects @region will also be invalidated.
4492 * If %FALSE, then the update area for child windows will remain
4493 * unaffected. See gdk_window_invalidate_maybe_recurse if you need
4494 * fine grained control over which children are invalidated.
4497 gdk_window_invalidate_region (GdkWindow *window,
4498 const cairo_region_t *region,
4499 gboolean invalidate_children)
4501 gdk_window_invalidate_maybe_recurse (window, region,
4502 invalidate_children ?
4503 true_predicate : (gboolean (*) (GdkWindow *, gpointer))NULL,
4508 * _gdk_window_invalidate_for_expose:
4509 * @window: a #GdkWindow
4510 * @region: a #cairo_region_t
4512 * Adds @region to the update area for @window. The update area is the
4513 * region that needs to be redrawn, or "dirty region." The call
4514 * gdk_window_process_updates() sends one or more expose events to the
4515 * window, which together cover the entire update area. An
4516 * application would normally redraw the contents of @window in
4517 * response to those expose events.
4519 * GDK will call gdk_window_process_all_updates() on your behalf
4520 * whenever your program returns to the main loop and becomes idle, so
4521 * normally there's no need to do that manually, you just need to
4522 * invalidate regions that you know should be redrawn.
4524 * This version of invalidation is used when you recieve expose events
4525 * from the native window system. It exposes the native window, plus
4526 * any non-native child windows (but not native child windows, as those would
4527 * have gotten their own expose events).
4530 _gdk_window_invalidate_for_expose (GdkWindow *window,
4531 cairo_region_t *region)
4533 GdkWindowRegionMove *move;
4534 cairo_region_t *move_region;
4537 /* Any invalidations comming from the windowing system will
4538 be in areas that may be moved by outstanding moves,
4539 so we need to modify the expose region correspondingly,
4540 otherwise we would expose in the wrong place, as the
4541 outstanding moves will be copied before we draw the
4543 for (l = window->outstanding_moves; l != NULL; l = l->next)
4547 /* covert to move source region */
4548 move_region = cairo_region_copy (move->dest_region);
4549 cairo_region_translate (move_region, -move->dx, -move->dy);
4551 /* Move area of region that intersects with move source
4552 by dx, dy of the move*/
4553 cairo_region_intersect (move_region, region);
4554 cairo_region_subtract (region, move_region);
4555 cairo_region_translate (move_region, move->dx, move->dy);
4556 cairo_region_union (region, move_region);
4558 cairo_region_destroy (move_region);
4561 gdk_window_invalidate_maybe_recurse_full (window, region, CLEAR_BG_WINCLEARED,
4562 (gboolean (*) (GdkWindow *, gpointer))gdk_window_has_no_impl,
4568 * gdk_window_get_update_area:
4569 * @window: a #GdkWindow
4571 * Transfers ownership of the update area from @window to the caller
4572 * of the function. That is, after calling this function, @window will
4573 * no longer have an invalid/dirty region; the update area is removed
4574 * from @window and handed to you. If a window has no update area,
4575 * gdk_window_get_update_area() returns %NULL. You are responsible for
4576 * calling cairo_region_destroy() on the returned region if it's non-%NULL.
4578 * Return value: the update area for @window
4581 gdk_window_get_update_area (GdkWindow *window)
4583 GdkWindow *impl_window;
4584 cairo_region_t *tmp_region;
4586 g_return_val_if_fail (GDK_IS_WINDOW (window), NULL);
4588 impl_window = gdk_window_get_impl_window (window);
4590 if (impl_window->update_area)
4592 tmp_region = cairo_region_copy (window->clip_region_with_children);
4593 /* Convert to impl coords */
4594 cairo_region_translate (tmp_region, window->abs_x, window->abs_y);
4595 cairo_region_intersect (tmp_region, impl_window->update_area);
4597 if (cairo_region_is_empty (tmp_region))
4599 cairo_region_destroy (tmp_region);
4604 cairo_region_subtract (impl_window->update_area, tmp_region);
4606 if (cairo_region_is_empty (impl_window->update_area) &&
4607 impl_window->outstanding_moves == NULL)
4609 cairo_region_destroy (impl_window->update_area);
4610 impl_window->update_area = NULL;
4612 gdk_window_remove_update_window ((GdkWindow *)impl_window);
4615 /* Convert from impl coords */
4616 cairo_region_translate (tmp_region, -window->abs_x, -window->abs_y);
4626 * _gdk_window_clear_update_area:
4627 * @window: a #GdkWindow.
4629 * Internal function to clear the update area for a window. This
4630 * is called when the window is hidden or destroyed.
4633 _gdk_window_clear_update_area (GdkWindow *window)
4635 g_return_if_fail (GDK_IS_WINDOW (window));
4637 if (window->update_area)
4639 gdk_window_remove_update_window (window);
4641 cairo_region_destroy (window->update_area);
4642 window->update_area = NULL;
4647 * gdk_window_freeze_updates:
4648 * @window: a #GdkWindow
4650 * Temporarily freezes a window such that it won't receive expose
4651 * events. The window will begin receiving expose events again when
4652 * gdk_window_thaw_updates() is called. If gdk_window_freeze_updates()
4653 * has been called more than once, gdk_window_thaw_updates() must be called
4654 * an equal number of times to begin processing exposes.
4657 gdk_window_freeze_updates (GdkWindow *window)
4659 GdkWindow *impl_window;
4661 g_return_if_fail (GDK_IS_WINDOW (window));
4663 impl_window = gdk_window_get_impl_window (window);
4664 impl_window->update_freeze_count++;
4668 * gdk_window_thaw_updates:
4669 * @window: a #GdkWindow
4671 * Thaws a window frozen with gdk_window_freeze_updates().
4674 gdk_window_thaw_updates (GdkWindow *window)
4676 GdkWindow *impl_window;
4678 g_return_if_fail (GDK_IS_WINDOW (window));
4680 impl_window = gdk_window_get_impl_window (window);
4682 g_return_if_fail (impl_window->update_freeze_count > 0);
4684 if (--impl_window->update_freeze_count == 0)
4685 gdk_window_schedule_update (GDK_WINDOW (impl_window));
4689 * gdk_window_freeze_toplevel_updates_libgtk_only:
4690 * @window: a #GdkWindow
4692 * Temporarily freezes a window and all its descendants such that it won't
4693 * receive expose events. The window will begin receiving expose events
4694 * again when gdk_window_thaw_toplevel_updates_libgtk_only() is called. If
4695 * gdk_window_freeze_toplevel_updates_libgtk_only()
4696 * has been called more than once,
4697 * gdk_window_thaw_toplevel_updates_libgtk_only() must be called
4698 * an equal number of times to begin processing exposes.
4700 * This function is not part of the GDK public API and is only
4704 gdk_window_freeze_toplevel_updates_libgtk_only (GdkWindow *window)
4706 g_return_if_fail (GDK_IS_WINDOW (window));
4707 g_return_if_fail (window->window_type != GDK_WINDOW_CHILD);
4709 window->update_and_descendants_freeze_count++;
4713 * gdk_window_thaw_toplevel_updates_libgtk_only:
4714 * @window: a #GdkWindow
4716 * Thaws a window frozen with
4717 * gdk_window_freeze_toplevel_updates_libgtk_only().
4719 * This function is not part of the GDK public API and is only
4723 gdk_window_thaw_toplevel_updates_libgtk_only (GdkWindow *window)
4725 g_return_if_fail (GDK_IS_WINDOW (window));
4726 g_return_if_fail (window->window_type != GDK_WINDOW_CHILD);
4727 g_return_if_fail (window->update_and_descendants_freeze_count > 0);
4729 window->update_and_descendants_freeze_count--;
4731 gdk_window_schedule_update (window);
4735 * gdk_window_set_debug_updates:
4736 * @setting: %TRUE to turn on update debugging
4738 * With update debugging enabled, calls to
4739 * gdk_window_invalidate_region() clear the invalidated region of the
4740 * screen to a noticeable color, and GDK pauses for a short time
4741 * before sending exposes to windows during
4742 * gdk_window_process_updates(). The net effect is that you can see
4743 * the invalid region for each window and watch redraws as they
4744 * occur. This allows you to diagnose inefficiencies in your application.
4746 * In essence, because the GDK rendering model prevents all flicker,
4747 * if you are redrawing the same region 400 times you may never
4748 * notice, aside from noticing a speed problem. Enabling update
4749 * debugging causes GTK to flicker slowly and noticeably, so you can
4750 * see exactly what's being redrawn when, in what order.
4752 * The --gtk-debug=updates command line option passed to GTK+ programs
4753 * enables this debug option at application startup time. That's
4754 * usually more useful than calling gdk_window_set_debug_updates()
4755 * yourself, though you might want to use this function to enable
4756 * updates sometime after application startup time.
4760 gdk_window_set_debug_updates (gboolean setting)
4762 debug_updates = setting;
4766 * gdk_window_constrain_size:
4767 * @geometry: a #GdkGeometry structure
4768 * @flags: a mask indicating what portions of @geometry are set
4769 * @width: desired width of window
4770 * @height: desired height of the window
4771 * @new_width: (out): location to store resulting width
4772 * @new_height: (out): location to store resulting height
4774 * Constrains a desired width and height according to a
4775 * set of geometry hints (such as minimum and maximum size).
4778 gdk_window_constrain_size (GdkGeometry *geometry,
4785 /* This routine is partially borrowed from fvwm.
4787 * Copyright 1993, Robert Nation
4788 * You may use this code for any purpose, as long as the original
4789 * copyright remains in the source code and all documentation
4791 * which in turn borrows parts of the algorithm from uwm
4794 gint min_height = 0;
4795 gint base_width = 0;
4796 gint base_height = 0;
4799 gint max_width = G_MAXINT;
4800 gint max_height = G_MAXINT;
4802 #define FLOOR(value, base) ( ((gint) ((value) / (base))) * (base) )
4804 if ((flags & GDK_HINT_BASE_SIZE) && (flags & GDK_HINT_MIN_SIZE))
4806 base_width = geometry->base_width;
4807 base_height = geometry->base_height;
4808 min_width = geometry->min_width;
4809 min_height = geometry->min_height;
4811 else if (flags & GDK_HINT_BASE_SIZE)
4813 base_width = geometry->base_width;
4814 base_height = geometry->base_height;
4815 min_width = geometry->base_width;
4816 min_height = geometry->base_height;
4818 else if (flags & GDK_HINT_MIN_SIZE)
4820 base_width = geometry->min_width;
4821 base_height = geometry->min_height;
4822 min_width = geometry->min_width;
4823 min_height = geometry->min_height;
4826 if (flags & GDK_HINT_MAX_SIZE)
4828 max_width = geometry->max_width ;
4829 max_height = geometry->max_height;
4832 if (flags & GDK_HINT_RESIZE_INC)
4834 xinc = MAX (xinc, geometry->width_inc);
4835 yinc = MAX (yinc, geometry->height_inc);
4838 /* clamp width and height to min and max values
4840 width = CLAMP (width, min_width, max_width);
4841 height = CLAMP (height, min_height, max_height);
4843 /* shrink to base + N * inc
4845 width = base_width + FLOOR (width - base_width, xinc);
4846 height = base_height + FLOOR (height - base_height, yinc);
4848 /* constrain aspect ratio, according to:
4851 * min_aspect <= -------- <= max_aspect
4855 if (flags & GDK_HINT_ASPECT &&
4856 geometry->min_aspect > 0 &&
4857 geometry->max_aspect > 0)
4861 if (geometry->min_aspect * height > width)
4863 delta = FLOOR (height - width / geometry->min_aspect, yinc);
4864 if (height - delta >= min_height)
4868 delta = FLOOR (height * geometry->min_aspect - width, xinc);
4869 if (width + delta <= max_width)
4874 if (geometry->max_aspect * height < width)
4876 delta = FLOOR (width - height * geometry->max_aspect, xinc);
4877 if (width - delta >= min_width)
4881 delta = FLOOR (width / geometry->max_aspect - height, yinc);
4882 if (height + delta <= max_height)
4891 *new_height = height;
4895 * gdk_window_get_pointer:
4896 * @window: a #GdkWindow
4897 * @x: (out) (allow-none): return location for X coordinate of pointer or %NULL to not
4898 * return the X coordinate
4899 * @y: (out) (allow-none): return location for Y coordinate of pointer or %NULL to not
4900 * return the Y coordinate
4901 * @mask: (out) (allow-none): return location for modifier mask or %NULL to not return the
4904 * Obtains the current pointer position and modifier state.
4905 * The position is given in coordinates relative to the upper left
4906 * corner of @window.
4908 * Return value: (transfer none): the window containing the pointer (as with
4909 * gdk_window_at_pointer()), or %NULL if the window containing the
4910 * pointer isn't known to GDK
4912 * Deprecated: 3.0: Use gdk_window_get_device_position() instead.
4915 gdk_window_get_pointer (GdkWindow *window,
4918 GdkModifierType *mask)
4920 GdkDisplay *display;
4922 g_return_val_if_fail (GDK_IS_WINDOW (window), NULL);
4924 display = gdk_window_get_display (window);
4926 return gdk_window_get_device_position (window, display->core_pointer, x, y, mask);
4930 * gdk_window_get_device_position:
4931 * @window: a #GdkWindow.
4932 * @device: pointer #GdkDevice to query to.
4933 * @x: (out) (allow-none): return location for the X coordinate of @device, or %NULL.
4934 * @y: (out) (allow-none): return location for the Y coordinate of @device, or %NULL.
4935 * @mask: (out) (allow-none): return location for the modifier mask, or %NULL.
4937 * Obtains the current device position and modifier state.
4938 * The position is given in coordinates relative to the upper left
4939 * corner of @window.
4941 * Return value: (transfer none): The window underneath @device (as with
4942 * gdk_device_get_window_at_position()), or %NULL if the window is not known to GDK.
4947 gdk_window_get_device_position (GdkWindow *window,
4951 GdkModifierType *mask)
4954 GdkModifierType tmp_mask;
4955 gboolean normal_child;
4957 g_return_val_if_fail (GDK_IS_WINDOW (window), NULL);
4958 g_return_val_if_fail (GDK_IS_DEVICE (device), NULL);
4959 g_return_val_if_fail (gdk_device_get_source (device) != GDK_SOURCE_KEYBOARD, NULL);
4961 normal_child = GDK_WINDOW_IMPL_GET_CLASS (window->impl)->get_device_state (window,
4965 /* We got the coords on the impl, convert to the window */
4966 tmp_x -= window->abs_x;
4967 tmp_y -= window->abs_y;
4976 _gdk_display_enable_motion_hints (gdk_window_get_display (window), device);
4979 return _gdk_window_find_child_at (window, tmp_x, tmp_y);
4984 * gdk_window_at_pointer:
4985 * @win_x: (out) (allow-none): return location for origin of the window under the pointer
4986 * @win_y: (out) (allow-none): return location for origin of the window under the pointer
4988 * Obtains the window underneath the mouse pointer, returning the
4989 * location of that window in @win_x, @win_y. Returns %NULL if the
4990 * window under the mouse pointer is not known to GDK (if the window
4991 * belongs to another application and a #GdkWindow hasn't been created
4992 * for it with gdk_window_foreign_new())
4994 * NOTE: For multihead-aware widgets or applications use
4995 * gdk_display_get_window_at_pointer() instead.
4997 * Return value: (transfer none): window under the mouse pointer
4999 * Deprecated: 3.0: Use gdk_device_get_window_at_position() instead.
5002 gdk_window_at_pointer (gint *win_x,
5005 return gdk_display_get_window_at_pointer (gdk_display_get_default (), win_x, win_y);
5009 * gdk_get_default_root_window:
5011 * Obtains the root window (parent all other windows are inside)
5012 * for the default display and screen.
5014 * Return value: (transfer none): the default root window
5017 gdk_get_default_root_window (void)
5019 return gdk_screen_get_root_window (gdk_screen_get_default ());
5023 get_all_native_children (GdkWindow *window,
5029 for (l = window->children; l != NULL; l = l->next)
5033 if (gdk_window_has_impl (child))
5034 *native = g_list_prepend (*native, child);
5036 get_all_native_children (child, native);
5042 gdk_window_raise_internal (GdkWindow *window)
5044 GdkWindow *parent = window->parent;
5046 GList *native_children;
5048 GdkWindowImplClass *impl_class;
5052 parent->children = g_list_remove (parent->children, window);
5053 parent->children = g_list_prepend (parent->children, window);
5056 impl_class = GDK_WINDOW_IMPL_GET_CLASS (window->impl);
5057 /* Just do native raise for toplevels */
5058 if (gdk_window_is_toplevel (window) ||
5059 /* The restack_under codepath should work correctly even if the parent
5060 is native, but it relies on the order of ->children to be correct,
5061 and some apps like SWT reorder the x windows without gdks knowledge,
5062 so we use raise directly in order to make these behave as before
5063 when using native windows */
5064 (gdk_window_has_impl (window) && gdk_window_has_impl (parent)))
5066 impl_class->raise (window);
5068 else if (gdk_window_has_impl (window))
5070 above = find_native_sibling_above (parent, window);
5073 listhead.data = window;
5074 listhead.next = NULL;
5075 listhead.prev = NULL;
5076 impl_class->restack_under ((GdkWindow *)above,
5080 impl_class->raise (window);
5084 native_children = NULL;
5085 get_all_native_children (window, &native_children);
5086 if (native_children != NULL)
5088 above = find_native_sibling_above (parent, window);
5091 impl_class->restack_under (above, native_children);
5094 /* Right order, since native_children is bottom-topmost first */
5095 for (l = native_children; l != NULL; l = l->next)
5096 impl_class->raise (l->data);
5099 g_list_free (native_children);
5105 /* Returns TRUE If the native window was mapped or unmapped */
5107 set_viewable (GdkWindow *w,
5111 GdkWindowImplClass *impl_class;
5114 if (w->viewable == val)
5120 recompute_visible_regions (w, FALSE, FALSE);
5122 for (l = w->children; l != NULL; l = l->next)
5126 if (GDK_WINDOW_IS_MAPPED (child) &&
5127 child->window_type != GDK_WINDOW_FOREIGN)
5128 set_viewable (child, val);
5131 if (gdk_window_has_impl (w) &&
5132 w->window_type != GDK_WINDOW_FOREIGN &&
5133 !gdk_window_is_toplevel (w))
5135 /* For most native windows we show/hide them not when they are
5136 * mapped/unmapped, because that may not produce the correct results.
5137 * For instance, if a native window have a non-native parent which is
5138 * hidden, but its native parent is viewable then showing the window
5139 * would make it viewable to X but its not viewable wrt the non-native
5140 * hierarchy. In order to handle this we track the gdk side viewability
5141 * and only map really viewable windows.
5143 * There are two exceptions though:
5145 * For foreign windows we don't want ever change the mapped state
5146 * except when explicitly done via gdk_window_show/hide, as this may
5147 * cause problems for client owning the foreign window when its window
5148 * is suddenly mapped or unmapped.
5150 * For toplevel windows embedded in a foreign window (e.g. a plug)
5151 * we sometimes synthesize a map of a window, but the native
5152 * window is really shown by the embedder, so we don't want to
5153 * do the show ourselves. We can't really tell this case from the normal
5154 * toplevel show as such toplevels are seen by gdk as parents of the
5155 * root window, so we make an exception for all toplevels.
5158 impl_class = GDK_WINDOW_IMPL_GET_CLASS (w->impl);
5160 impl_class->show ((GdkWindow *)w, FALSE);
5162 impl_class->hide ((GdkWindow *)w);
5170 /* Returns TRUE If the native window was mapped or unmapped */
5172 _gdk_window_update_viewable (GdkWindow *window)
5176 if (window->window_type == GDK_WINDOW_FOREIGN ||
5177 window->window_type == GDK_WINDOW_ROOT)
5179 else if (gdk_window_is_toplevel (window) ||
5180 window->parent->viewable)
5181 viewable = GDK_WINDOW_IS_MAPPED (window);
5185 return set_viewable (window, viewable);
5189 gdk_window_show_internal (GdkWindow *window, gboolean raise)
5191 GdkWindowImplClass *impl_class;
5192 gboolean was_mapped, was_viewable;
5195 g_return_if_fail (GDK_IS_WINDOW (window));
5197 if (window->destroyed)
5200 was_mapped = GDK_WINDOW_IS_MAPPED (window);
5201 was_viewable = window->viewable;
5204 /* Keep children in (reverse) stacking order */
5205 gdk_window_raise_internal (window);
5207 if (gdk_window_has_impl (window))
5210 gdk_synthesize_window_state (window,
5211 GDK_WINDOW_STATE_WITHDRAWN,
5219 did_show = _gdk_window_update_viewable (window);
5221 /* If it was already viewable the backend show op won't be called, call it
5222 again to ensure things happen right if the mapped tracking was not right
5223 for e.g. a foreign window.
5224 Dunno if this is strictly needed but its what happened pre-csw.
5225 Also show if not done by gdk_window_update_viewable. */
5226 if (gdk_window_has_impl (window) && (was_viewable || !did_show))
5228 impl_class = GDK_WINDOW_IMPL_GET_CLASS (window->impl);
5229 impl_class->show (window, !did_show ? was_mapped : TRUE);
5232 if (!was_mapped && !gdk_window_has_impl (window))
5234 if (window->event_mask & GDK_STRUCTURE_MASK)
5235 _gdk_make_event (window, GDK_MAP, NULL, FALSE);
5237 if (window->parent && window->parent->event_mask & GDK_SUBSTRUCTURE_MASK)
5238 _gdk_make_event (window, GDK_MAP, NULL, FALSE);
5241 if (!was_mapped || raise)
5243 recompute_visible_regions (window, TRUE, FALSE);
5245 /* If any decendants became visible we need to send visibility notify */
5246 gdk_window_update_visibility_recursively (window, NULL);
5248 if (gdk_window_is_viewable (window))
5250 _gdk_synthesize_crossing_events_for_geometry_change (window);
5251 gdk_window_invalidate_rect_full (window, NULL, TRUE, CLEAR_BG_ALL);
5257 * gdk_window_show_unraised:
5258 * @window: a #GdkWindow
5260 * Shows a #GdkWindow onscreen, but does not modify its stacking
5261 * order. In contrast, gdk_window_show() will raise the window
5262 * to the top of the window stack.
5264 * On the X11 platform, in Xlib terms, this function calls
5265 * XMapWindow() (it also updates some internal GDK state, which means
5266 * that you can't really use XMapWindow() directly on a GDK window).
5269 gdk_window_show_unraised (GdkWindow *window)
5271 gdk_window_show_internal (window, FALSE);
5276 * @window: a #GdkWindow
5278 * Raises @window to the top of the Z-order (stacking order), so that
5279 * other windows with the same parent window appear below @window.
5280 * This is true whether or not the windows are visible.
5282 * If @window is a toplevel, the window manager may choose to deny the
5283 * request to move the window in the Z-order, gdk_window_raise() only
5284 * requests the restack, does not guarantee it.
5287 gdk_window_raise (GdkWindow *window)
5289 cairo_region_t *old_region, *new_region;
5291 g_return_if_fail (GDK_IS_WINDOW (window));
5293 if (window->destroyed)
5296 gdk_window_flush_if_exposing (window);
5299 if (gdk_window_is_viewable (window) &&
5300 !window->input_only)
5301 old_region = cairo_region_copy (window->clip_region);
5303 /* Keep children in (reverse) stacking order */
5304 gdk_window_raise_internal (window);
5306 recompute_visible_regions (window, TRUE, FALSE);
5310 new_region = cairo_region_copy (window->clip_region);
5312 cairo_region_subtract (new_region, old_region);
5313 gdk_window_invalidate_region_full (window, new_region, TRUE, CLEAR_BG_ALL);
5315 cairo_region_destroy (old_region);
5316 cairo_region_destroy (new_region);
5321 gdk_window_lower_internal (GdkWindow *window)
5323 GdkWindow *parent = window->parent;
5324 GdkWindowImplClass *impl_class;
5326 GList *native_children;
5331 parent->children = g_list_remove (parent->children, window);
5332 parent->children = g_list_append (parent->children, window);
5335 impl_class = GDK_WINDOW_IMPL_GET_CLASS (window->impl);
5336 /* Just do native lower for toplevels */
5337 if (gdk_window_is_toplevel (window) ||
5338 /* The restack_under codepath should work correctly even if the parent
5339 is native, but it relies on the order of ->children to be correct,
5340 and some apps like SWT reorder the x windows without gdks knowledge,
5341 so we use lower directly in order to make these behave as before
5342 when using native windows */
5343 (gdk_window_has_impl (window) && gdk_window_has_impl (parent)))
5345 impl_class->lower (window);
5347 else if (gdk_window_has_impl (window))
5349 above = find_native_sibling_above (parent, window);
5352 listhead.data = window;
5353 listhead.next = NULL;
5354 listhead.prev = NULL;
5355 impl_class->restack_under ((GdkWindow *)above, &listhead);
5358 impl_class->raise (window);
5362 native_children = NULL;
5363 get_all_native_children (window, &native_children);
5364 if (native_children != NULL)
5366 above = find_native_sibling_above (parent, window);
5369 impl_class->restack_under ((GdkWindow *)above,
5373 /* Right order, since native_children is bottom-topmost first */
5374 for (l = native_children; l != NULL; l = l->next)
5375 impl_class->raise (l->data);
5378 g_list_free (native_children);
5385 gdk_window_invalidate_in_parent (GdkWindow *private)
5387 GdkRectangle r, child;
5389 if (gdk_window_is_toplevel (private))
5392 /* get the visible rectangle of the parent */
5394 r.width = private->parent->width;
5395 r.height = private->parent->height;
5397 child.x = private->x;
5398 child.y = private->y;
5399 child.width = private->width;
5400 child.height = private->height;
5401 gdk_rectangle_intersect (&r, &child, &r);
5403 gdk_window_invalidate_rect_full (private->parent, &r, TRUE, CLEAR_BG_ALL);
5409 * @window: a #GdkWindow
5411 * Lowers @window to the bottom of the Z-order (stacking order), so that
5412 * other windows with the same parent window appear above @window.
5413 * This is true whether or not the other windows are visible.
5415 * If @window is a toplevel, the window manager may choose to deny the
5416 * request to move the window in the Z-order, gdk_window_lower() only
5417 * requests the restack, does not guarantee it.
5419 * Note that gdk_window_show() raises the window again, so don't call this
5420 * function before gdk_window_show(). (Try gdk_window_show_unraised().)
5423 gdk_window_lower (GdkWindow *window)
5425 g_return_if_fail (GDK_IS_WINDOW (window));
5427 if (window->destroyed)
5430 gdk_window_flush_if_exposing (window);
5432 /* Keep children in (reverse) stacking order */
5433 gdk_window_lower_internal (window);
5435 recompute_visible_regions (window, TRUE, FALSE);
5437 _gdk_synthesize_crossing_events_for_geometry_change (window);
5438 gdk_window_invalidate_in_parent (window);
5442 * gdk_window_restack:
5443 * @window: a #GdkWindow
5444 * @sibling: (allow-none): a #GdkWindow that is a sibling of @window, or %NULL
5447 * Changes the position of @window in the Z-order (stacking order), so that
5448 * it is above @sibling (if @above is %TRUE) or below @sibling (if @above is
5451 * If @sibling is %NULL, then this either raises (if @above is %TRUE) or
5452 * lowers the window.
5454 * If @window is a toplevel, the window manager may choose to deny the
5455 * request to move the window in the Z-order, gdk_window_restack() only
5456 * requests the restack, does not guarantee it.
5461 gdk_window_restack (GdkWindow *window,
5465 GdkWindowImplClass *impl_class;
5467 GdkWindow *above_native;
5468 GList *sibling_link;
5469 GList *native_children;
5472 g_return_if_fail (GDK_IS_WINDOW (window));
5473 g_return_if_fail (sibling == NULL || GDK_IS_WINDOW (sibling));
5475 if (window->destroyed)
5478 if (sibling == NULL)
5481 gdk_window_raise (window);
5483 gdk_window_lower (window);
5487 gdk_window_flush_if_exposing (window);
5489 if (gdk_window_is_toplevel (window))
5491 g_return_if_fail (gdk_window_is_toplevel (sibling));
5492 impl_class = GDK_WINDOW_IMPL_GET_CLASS (window->impl);
5493 impl_class->restack_toplevel (window, sibling, above);
5497 parent = window->parent;
5500 sibling_link = g_list_find (parent->children, sibling);
5501 g_return_if_fail (sibling_link != NULL);
5502 if (sibling_link == NULL)
5505 parent->children = g_list_remove (parent->children, window);
5507 parent->children = g_list_insert_before (parent->children,
5511 parent->children = g_list_insert_before (parent->children,
5515 impl_class = GDK_WINDOW_IMPL_GET_CLASS (window->impl);
5516 if (gdk_window_has_impl (window))
5518 above_native = find_native_sibling_above (parent, window);
5521 listhead.data = window;
5522 listhead.next = NULL;
5523 listhead.prev = NULL;
5524 impl_class->restack_under (above_native, &listhead);
5527 impl_class->raise (window);
5531 native_children = NULL;
5532 get_all_native_children (window, &native_children);
5533 if (native_children != NULL)
5535 above_native = find_native_sibling_above (parent, window);
5537 impl_class->restack_under (above_native,
5541 /* Right order, since native_children is bottom-topmost first */
5542 for (l = native_children; l != NULL; l = l->next)
5543 impl_class->raise (l->data);
5546 g_list_free (native_children);
5551 recompute_visible_regions (window, TRUE, FALSE);
5553 _gdk_synthesize_crossing_events_for_geometry_change (window);
5554 gdk_window_invalidate_in_parent (window);
5560 * @window: a #GdkWindow
5562 * Like gdk_window_show_unraised(), but also raises the window to the
5563 * top of the window stack (moves the window to the front of the
5566 * This function maps a window so it's visible onscreen. Its opposite
5567 * is gdk_window_hide().
5569 * When implementing a #GtkWidget, you should call this function on the widget's
5570 * #GdkWindow as part of the "map" method.
5573 gdk_window_show (GdkWindow *window)
5575 gdk_window_show_internal (window, TRUE);
5580 * @window: a #GdkWindow
5582 * For toplevel windows, withdraws them, so they will no longer be
5583 * known to the window manager; for all windows, unmaps them, so
5584 * they won't be displayed. Normally done automatically as
5585 * part of gtk_widget_hide().
5588 gdk_window_hide (GdkWindow *window)
5590 GdkWindowImplClass *impl_class;
5591 gboolean was_mapped, did_hide;
5593 g_return_if_fail (GDK_IS_WINDOW (window));
5595 if (window->destroyed)
5598 was_mapped = GDK_WINDOW_IS_MAPPED (window);
5600 if (gdk_window_has_impl (window))
5603 if (GDK_WINDOW_IS_MAPPED (window))
5604 gdk_synthesize_window_state (window,
5606 GDK_WINDOW_STATE_WITHDRAWN);
5608 else if (was_mapped)
5610 GdkDisplay *display;
5611 GdkDeviceManager *device_manager;
5614 /* May need to break grabs on children */
5615 display = gdk_window_get_display (window);
5616 device_manager = gdk_display_get_device_manager (display);
5618 /* Get all devices */
5619 devices = gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_MASTER);
5620 devices = g_list_concat (devices, gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_SLAVE));
5621 devices = g_list_concat (devices, gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_FLOATING));
5623 for (d = devices; d; d = d->next)
5625 GdkDevice *device = d->data;
5627 if (_gdk_display_end_device_grab (display,
5629 _gdk_display_get_next_serial (display),
5632 gdk_device_ungrab (device, GDK_CURRENT_TIME);
5635 window->state = GDK_WINDOW_STATE_WITHDRAWN;
5636 g_list_free (devices);
5639 did_hide = _gdk_window_update_viewable (window);
5641 /* Hide foreign window as those are not handled by update_viewable. */
5642 if (gdk_window_has_impl (window) && (!did_hide))
5644 impl_class = GDK_WINDOW_IMPL_GET_CLASS (window->impl);
5645 impl_class->hide (window);
5648 recompute_visible_regions (window, TRUE, FALSE);
5650 /* all decendants became non-visible, we need to send visibility notify */
5651 gdk_window_update_visibility_recursively (window, NULL);
5653 if (was_mapped && !gdk_window_has_impl (window))
5655 if (window->event_mask & GDK_STRUCTURE_MASK)
5656 _gdk_make_event (window, GDK_UNMAP, NULL, FALSE);
5658 if (window->parent && window->parent->event_mask & GDK_SUBSTRUCTURE_MASK)
5659 _gdk_make_event (window, GDK_UNMAP, NULL, FALSE);
5661 _gdk_synthesize_crossing_events_for_geometry_change (window->parent);
5664 /* Invalidate the rect */
5666 gdk_window_invalidate_in_parent (window);
5670 * gdk_window_withdraw:
5671 * @window: a toplevel #GdkWindow
5673 * Withdraws a window (unmaps it and asks the window manager to forget about it).
5674 * This function is not really useful as gdk_window_hide() automatically
5675 * withdraws toplevel windows before hiding them.
5678 gdk_window_withdraw (GdkWindow *window)
5680 GdkWindowImplClass *impl_class;
5681 gboolean was_mapped;
5683 g_return_if_fail (GDK_IS_WINDOW (window));
5685 if (window->destroyed)
5688 was_mapped = GDK_WINDOW_IS_MAPPED (window);
5690 if (gdk_window_has_impl (window))
5692 impl_class = GDK_WINDOW_IMPL_GET_CLASS (window->impl);
5693 impl_class->withdraw (window);
5697 if (window->event_mask & GDK_STRUCTURE_MASK)
5698 _gdk_make_event (window, GDK_UNMAP, NULL, FALSE);
5700 if (window->parent && window->parent->event_mask & GDK_SUBSTRUCTURE_MASK)
5701 _gdk_make_event (window, GDK_UNMAP, NULL, FALSE);
5703 _gdk_synthesize_crossing_events_for_geometry_change (window->parent);
5706 recompute_visible_regions (window, TRUE, FALSE);
5711 * gdk_window_set_events:
5712 * @window: a #GdkWindow
5713 * @event_mask: event mask for @window
5715 * The event mask for a window determines which events will be reported
5716 * for that window from all master input devices. For example, an event mask
5717 * including #GDK_BUTTON_PRESS_MASK means the window should report button
5718 * press events. The event mask is the bitwise OR of values from the
5719 * #GdkEventMask enumeration.
5722 gdk_window_set_events (GdkWindow *window,
5723 GdkEventMask event_mask)
5725 GdkWindowImplClass *impl_class;
5726 GdkDisplay *display;
5728 g_return_if_fail (GDK_IS_WINDOW (window));
5730 if (window->destroyed)
5733 /* If motion hint is disabled, enable motion events again */
5734 display = gdk_window_get_display (window);
5735 if ((window->event_mask & GDK_POINTER_MOTION_HINT_MASK) &&
5736 !(event_mask & GDK_POINTER_MOTION_HINT_MASK))
5738 GList *devices = window->devices_inside;
5742 _gdk_display_enable_motion_hints (display, (GdkDevice *) devices->data);
5743 devices = devices->next;
5747 window->event_mask = event_mask;
5749 if (gdk_window_has_impl (window))
5751 impl_class = GDK_WINDOW_IMPL_GET_CLASS (window->impl);
5752 impl_class->set_events (window,
5753 get_native_event_mask (window));
5759 * gdk_window_get_events:
5760 * @window: a #GdkWindow
5762 * Gets the event mask for @window for all master input devices. See
5763 * gdk_window_set_events().
5765 * Return value: event mask for @window
5768 gdk_window_get_events (GdkWindow *window)
5770 g_return_val_if_fail (GDK_IS_WINDOW (window), 0);
5772 if (window->destroyed)
5775 return window->event_mask;
5779 * gdk_window_set_device_events:
5780 * @window: a #GdkWindow
5781 * @device: #GdkDevice to enable events for.
5782 * @event_mask: event mask for @window
5784 * Sets the event mask for a given device (Normally a floating device, not
5785 * attached to any visible pointer) to @window. For example, an event mask
5786 * including #GDK_BUTTON_PRESS_MASK means the window should report button
5787 * press events. The event mask is the bitwise OR of values from the
5788 * #GdkEventMask enumeration.
5793 gdk_window_set_device_events (GdkWindow *window,
5795 GdkEventMask event_mask)
5797 GdkEventMask device_mask;
5798 GdkDisplay *display;
5801 g_return_if_fail (GDK_IS_WINDOW (window));
5802 g_return_if_fail (GDK_IS_DEVICE (device));
5804 if (GDK_WINDOW_DESTROYED (window))
5807 /* If motion hint is disabled, enable motion events again */
5808 display = gdk_window_get_display (window);
5809 if ((window->event_mask & GDK_POINTER_MOTION_HINT_MASK) &&
5810 !(event_mask & GDK_POINTER_MOTION_HINT_MASK))
5811 _gdk_display_enable_motion_hints (display, device);
5813 if (G_UNLIKELY (!window->device_events))
5814 window->device_events = g_hash_table_new (NULL, NULL);
5816 if (event_mask == 0)
5818 /* FIXME: unsetting events on a master device
5819 * would restore window->event_mask
5821 g_hash_table_remove (window->device_events, device);
5824 g_hash_table_insert (window->device_events, device,
5825 GINT_TO_POINTER (event_mask));
5827 native = gdk_window_get_toplevel (window);
5829 while (gdk_window_is_offscreen (native))
5831 native = gdk_offscreen_window_get_embedder (native);
5833 if (native == NULL ||
5834 (!_gdk_window_has_impl (native) &&
5835 !gdk_window_is_viewable (native)))
5838 native = gdk_window_get_toplevel (native);
5841 device_mask = get_native_device_event_mask (window, device);
5842 GDK_DEVICE_GET_CLASS (device)->select_window_events (device, native, device_mask);
5846 * gdk_window_get_device_events:
5847 * @window: a #GdkWindow.
5848 * @device: a #GdkDevice.
5850 * Returns the event mask for @window corresponding to an specific device.
5852 * Returns: device event mask for @window
5857 gdk_window_get_device_events (GdkWindow *window,
5862 g_return_val_if_fail (GDK_IS_WINDOW (window), 0);
5863 g_return_val_if_fail (GDK_IS_DEVICE (device), 0);
5865 if (GDK_WINDOW_DESTROYED (window))
5868 if (!window->device_events)
5871 mask = GPOINTER_TO_INT (g_hash_table_lookup (window->device_events, device));
5873 /* FIXME: device could be controlled by window->event_mask */
5879 gdk_window_move_resize_toplevel (GdkWindow *window,
5886 cairo_region_t *old_region, *new_region;
5887 GdkWindowImplClass *impl_class;
5894 is_resize = (width != -1) || (height != -1);
5896 if (gdk_window_is_viewable (window) &&
5897 !window->input_only)
5900 old_region = cairo_region_copy (window->clip_region);
5903 impl_class = GDK_WINDOW_IMPL_GET_CLASS (window->impl);
5904 impl_class->move_resize (window, with_move, x, y, width, height);
5906 /* Avoid recomputing for pure toplevel moves, for performance reasons */
5908 recompute_visible_regions (window, TRUE, FALSE);
5912 new_region = cairo_region_copy (window->clip_region);
5914 /* This is the newly exposed area (due to any resize),
5915 * X will expose it, but lets do that without the roundtrip
5917 cairo_region_subtract (new_region, old_region);
5918 gdk_window_invalidate_region_full (window, new_region, TRUE, CLEAR_BG_WINCLEARED);
5920 cairo_region_destroy (old_region);
5921 cairo_region_destroy (new_region);
5924 _gdk_synthesize_crossing_events_for_geometry_change (window);
5929 move_native_children (GdkWindow *private)
5933 GdkWindowImplClass *impl_class;
5935 for (l = private->children; l; l = l->next)
5939 if (child->impl != private->impl)
5941 impl_class = GDK_WINDOW_IMPL_GET_CLASS (child->impl);
5942 impl_class->move_resize (child, TRUE,
5944 child->width, child->height);
5947 move_native_children (child);
5952 collect_native_child_region_helper (GdkWindow *window,
5953 GdkWindowImpl *impl,
5954 cairo_region_t **region,
5959 cairo_region_t *tmp;
5962 for (l = window->children; l != NULL; l = l->next)
5966 if (!GDK_WINDOW_IS_MAPPED (child) || child->input_only)
5969 if (child->impl != impl)
5971 tmp = cairo_region_copy (child->clip_region);
5972 cairo_region_translate (tmp,
5973 x_offset + child->x,
5974 y_offset + child->y);
5975 if (*region == NULL)
5979 cairo_region_union (*region, tmp);
5980 cairo_region_destroy (tmp);
5984 collect_native_child_region_helper (child, impl, region,
5985 x_offset + child->x,
5986 y_offset + child->y);
5992 static cairo_region_t *
5993 collect_native_child_region (GdkWindow *window,
5994 gboolean include_this)
5996 cairo_region_t *region;
5998 if (include_this && gdk_window_has_impl (window) && window->viewable)
5999 return cairo_region_copy (window->clip_region);
6003 collect_native_child_region_helper (window, window->impl, ®ion, 0, 0);
6010 gdk_window_move_resize_internal (GdkWindow *window,
6017 cairo_region_t *old_region, *new_region, *copy_area;
6018 cairo_region_t *old_native_child_region, *new_native_child_region;
6019 GdkWindow *impl_window;
6020 GdkWindowImplClass *impl_class;
6022 int old_x, old_y, old_abs_x, old_abs_y;
6025 g_return_if_fail (GDK_IS_WINDOW (window));
6027 if (window->destroyed)
6030 if (gdk_window_is_toplevel (window))
6032 gdk_window_move_resize_toplevel (window, with_move, x, y, width, height);
6036 /* Bail early if no change */
6037 if (window->width == width &&
6038 window->height == height &&
6044 gdk_window_flush_if_exposing (window);
6046 /* Handle child windows */
6051 impl_window = gdk_window_get_impl_window (window);
6056 old_native_child_region = NULL;
6057 if (gdk_window_is_viewable (window) &&
6058 !window->input_only)
6062 old_region = cairo_region_copy (window->clip_region);
6063 /* Adjust region to parent window coords */
6064 cairo_region_translate (old_region, window->x, window->y);
6066 old_native_child_region = collect_native_child_region (window, TRUE);
6067 if (old_native_child_region)
6069 /* Adjust region to parent window coords */
6070 cairo_region_translate (old_native_child_region, window->x, window->y);
6072 /* Any native window move will immediately copy stuff to the destination, which may overwrite a
6073 * source or destination for a delayed GdkWindowRegionMove. So, we need
6074 * to flush those here for the parent window and all overlapped subwindows
6075 * of it. And we need to do this before setting the new clips as those will be
6078 gdk_window_flush_recursive (window->parent);
6082 /* Set the new position and size */
6088 if (!(width < 0 && height < 0))
6092 window->width = width;
6095 window->height = height;
6098 dx = window->x - old_x;
6099 dy = window->y - old_y;
6101 old_abs_x = window->abs_x;
6102 old_abs_y = window->abs_y;
6104 recompute_visible_regions (window, TRUE, FALSE);
6106 new_native_child_region = NULL;
6107 if (old_native_child_region)
6109 new_native_child_region = collect_native_child_region (window, TRUE);
6110 /* Adjust region to parent window coords */
6111 cairo_region_translate (new_native_child_region, window->x, window->y);
6114 if (gdk_window_has_impl (window))
6116 impl_class = GDK_WINDOW_IMPL_GET_CLASS (window->impl);
6118 /* Do the actual move after recomputing things, as this will have set the shape to
6119 the now correct one, thus avoiding copying regions that should not be copied. */
6120 impl_class->move_resize (window, TRUE,
6121 window->x, window->y,
6122 window->width, window->height);
6124 else if (old_abs_x != window->abs_x ||
6125 old_abs_y != window->abs_y)
6126 move_native_children (window);
6130 new_region = cairo_region_copy (window->clip_region);
6131 /* Adjust region to parent window coords */
6132 cairo_region_translate (new_region, window->x, window->y);
6135 * Part of the data at the new location can be copied from the
6136 * old location, this area is the intersection of the old region
6137 * moved as the copy will move it and then intersected with
6141 * Everything in the old and new regions that is not copied must be
6142 * invalidated (including children) as this is newly exposed
6144 copy_area = cairo_region_copy (new_region);
6146 cairo_region_union (new_region, old_region);
6148 if (old_native_child_region)
6150 /* Don't copy from inside native children, as this is copied by
6151 * the native window move.
6153 cairo_region_subtract (old_region, old_native_child_region);
6155 cairo_region_translate (old_region, dx, dy);
6157 cairo_region_intersect (copy_area, old_region);
6159 if (new_native_child_region)
6161 /* Don't copy any bits that would cause a read from the moved
6162 native windows, as we can't read that data */
6163 cairo_region_translate (new_native_child_region, dx, dy);
6164 cairo_region_subtract (copy_area, new_native_child_region);
6165 cairo_region_translate (new_native_child_region, -dx, -dy);
6168 cairo_region_subtract (new_region, copy_area);
6170 /* Convert old region to impl coords */
6171 cairo_region_translate (old_region, -dx + window->abs_x - window->x, -dy + window->abs_y - window->y);
6173 /* convert from parent coords to impl */
6174 cairo_region_translate (copy_area, window->abs_x - window->x, window->abs_y - window->y);
6176 move_region_on_impl (impl_window, copy_area, dx, dy); /* takes ownership of copy_area */
6178 /* Invalidate affected part in the parent window
6179 * (no higher window should be affected)
6180 * We also invalidate any children in that area, which could include
6181 * this window if it still overlaps that area.
6183 if (old_native_child_region)
6185 /* No need to expose the region that the native window move copies */
6186 cairo_region_translate (old_native_child_region, dx, dy);
6187 cairo_region_intersect (old_native_child_region, new_native_child_region);
6188 cairo_region_subtract (new_region, old_native_child_region);
6190 gdk_window_invalidate_region_full (window->parent, new_region, TRUE, CLEAR_BG_ALL);
6192 cairo_region_destroy (old_region);
6193 cairo_region_destroy (new_region);
6196 if (old_native_child_region)
6198 cairo_region_destroy (old_native_child_region);
6199 cairo_region_destroy (new_native_child_region);
6202 _gdk_synthesize_crossing_events_for_geometry_change (window);
6209 * @window: a #GdkWindow
6210 * @x: X coordinate relative to window's parent
6211 * @y: Y coordinate relative to window's parent
6213 * Repositions a window relative to its parent window.
6214 * For toplevel windows, window managers may ignore or modify the move;
6215 * you should probably use gtk_window_move() on a #GtkWindow widget
6216 * anyway, instead of using GDK functions. For child windows,
6217 * the move will reliably succeed.
6219 * If you're also planning to resize the window, use gdk_window_move_resize()
6220 * to both move and resize simultaneously, for a nicer visual effect.
6223 gdk_window_move (GdkWindow *window,
6227 gdk_window_move_resize_internal (window, TRUE, x, y, -1, -1);
6231 * gdk_window_resize:
6232 * @window: a #GdkWindow
6233 * @width: new width of the window
6234 * @height: new height of the window
6236 * Resizes @window; for toplevel windows, asks the window manager to resize
6237 * the window. The window manager may not allow the resize. When using GTK+,
6238 * use gtk_window_resize() instead of this low-level GDK function.
6240 * Windows may not be resized below 1x1.
6242 * If you're also planning to move the window, use gdk_window_move_resize()
6243 * to both move and resize simultaneously, for a nicer visual effect.
6246 gdk_window_resize (GdkWindow *window,
6250 gdk_window_move_resize_internal (window, FALSE, 0, 0, width, height);
6255 * gdk_window_move_resize:
6256 * @window: a #GdkWindow
6257 * @x: new X position relative to window's parent
6258 * @y: new Y position relative to window's parent
6260 * @height: new height
6262 * Equivalent to calling gdk_window_move() and gdk_window_resize(),
6263 * except that both operations are performed at once, avoiding strange
6264 * visual effects. (i.e. the user may be able to see the window first
6265 * move, then resize, if you don't use gdk_window_move_resize().)
6268 gdk_window_move_resize (GdkWindow *window,
6274 gdk_window_move_resize_internal (window, TRUE, x, y, width, height);
6279 * gdk_window_scroll:
6280 * @window: a #GdkWindow
6281 * @dx: Amount to scroll in the X direction
6282 * @dy: Amount to scroll in the Y direction
6284 * Scroll the contents of @window, both pixels and children, by the
6285 * given amount. @window itself does not move. Portions of the window
6286 * that the scroll operation brings in from offscreen areas are
6287 * invalidated. The invalidated region may be bigger than what would
6288 * strictly be necessary.
6290 * For X11, a minimum area will be invalidated if the window has no
6291 * subwindows, or if the edges of the window's parent do not extend
6292 * beyond the edges of the window. In other cases, a multi-step process
6293 * is used to scroll the window which may produce temporary visual
6294 * artifacts and unnecessary invalidations.
6297 gdk_window_scroll (GdkWindow *window,
6301 GdkWindow *impl_window;
6302 cairo_region_t *copy_area, *noncopy_area;
6303 cairo_region_t *old_native_child_region, *new_native_child_region;
6306 g_return_if_fail (GDK_IS_WINDOW (window));
6308 if (dx == 0 && dy == 0)
6311 if (window->destroyed)
6314 gdk_window_flush_if_exposing (window);
6316 old_native_child_region = collect_native_child_region (window, FALSE);
6317 if (old_native_child_region)
6319 /* Any native window move will immediately copy stuff to the destination, which may overwrite a
6320 * source or destination for a delayed GdkWindowRegionMove. So, we need
6321 * to flush those here for the window and all overlapped subwindows
6322 * of it. And we need to do this before setting the new clips as those will be
6325 gdk_window_flush_recursive (window);
6329 /* First move all child windows, without causing invalidation */
6331 tmp_list = window->children;
6334 GdkWindow *child = GDK_WINDOW (tmp_list->data);
6336 /* Just update the positions, the bits will move with the copy */
6340 tmp_list = tmp_list->next;
6343 recompute_visible_regions (window, FALSE, TRUE);
6345 new_native_child_region = NULL;
6346 if (old_native_child_region)
6347 new_native_child_region = collect_native_child_region (window, FALSE);
6349 move_native_children (window);
6351 /* Then copy the actual bits of the window w/ child windows */
6353 impl_window = gdk_window_get_impl_window (window);
6355 /* Calculate the area that can be gotten by copying the old area */
6356 copy_area = cairo_region_copy (window->clip_region);
6357 if (old_native_child_region)
6359 /* Don't copy from inside native children, as this is copied by
6360 * the native window move.
6362 cairo_region_subtract (copy_area, old_native_child_region);
6364 /* Don't copy any bits that would cause a read from the moved
6365 native windows, as we can't read that data */
6366 cairo_region_subtract (copy_area, new_native_child_region);
6368 cairo_region_translate (copy_area, dx, dy);
6369 cairo_region_intersect (copy_area, window->clip_region);
6371 /* And the rest need to be invalidated */
6372 noncopy_area = cairo_region_copy (window->clip_region);
6373 cairo_region_subtract (noncopy_area, copy_area);
6375 /* convert from window coords to impl */
6376 cairo_region_translate (copy_area, window->abs_x, window->abs_y);
6378 move_region_on_impl (impl_window, copy_area, dx, dy); /* takes ownership of copy_area */
6380 /* Invalidate not copied regions */
6381 if (old_native_child_region)
6383 /* No need to expose the region that the native window move copies */
6384 cairo_region_translate (old_native_child_region, dx, dy);
6385 cairo_region_intersect (old_native_child_region, new_native_child_region);
6386 cairo_region_subtract (noncopy_area, old_native_child_region);
6388 gdk_window_invalidate_region_full (window, noncopy_area, TRUE, CLEAR_BG_ALL);
6390 cairo_region_destroy (noncopy_area);
6392 if (old_native_child_region)
6394 cairo_region_destroy (old_native_child_region);
6395 cairo_region_destroy (new_native_child_region);
6398 _gdk_synthesize_crossing_events_for_geometry_change (window);
6402 * gdk_window_move_region:
6403 * @window: a #GdkWindow
6404 * @region: The #cairo_region_t to move
6405 * @dx: Amount to move in the X direction
6406 * @dy: Amount to move in the Y direction
6408 * Move the part of @window indicated by @region by @dy pixels in the Y
6409 * direction and @dx pixels in the X direction. The portions of @region
6410 * that not covered by the new position of @region are invalidated.
6412 * Child windows are not moved.
6417 gdk_window_move_region (GdkWindow *window,
6418 const cairo_region_t *region,
6422 GdkWindow *impl_window;
6423 cairo_region_t *nocopy_area;
6424 cairo_region_t *copy_area;
6426 g_return_if_fail (GDK_IS_WINDOW (window));
6427 g_return_if_fail (region != NULL);
6429 if (dx == 0 && dy == 0)
6432 if (window->destroyed)
6435 impl_window = gdk_window_get_impl_window (window);
6437 /* compute source regions */
6438 copy_area = cairo_region_copy (region);
6439 cairo_region_intersect (copy_area, window->clip_region_with_children);
6441 /* compute destination regions */
6442 cairo_region_translate (copy_area, dx, dy);
6443 cairo_region_intersect (copy_area, window->clip_region_with_children);
6445 /* Invalidate parts of the region (source and dest) not covered
6447 nocopy_area = cairo_region_copy (region);
6448 cairo_region_translate (nocopy_area, dx, dy);
6449 cairo_region_union (nocopy_area, region);
6450 cairo_region_subtract (nocopy_area, copy_area);
6452 /* convert from window coords to impl */
6453 cairo_region_translate (copy_area, window->abs_x, window->abs_y);
6454 move_region_on_impl (impl_window, copy_area, dx, dy); /* Takes ownership of copy_area */
6456 gdk_window_invalidate_region_full (window, nocopy_area, FALSE, CLEAR_BG_ALL);
6457 cairo_region_destroy (nocopy_area);
6461 * gdk_window_set_background:
6462 * @window: a #GdkWindow
6463 * @color: a #GdkColor
6465 * Sets the background color of @window. (However, when using GTK+,
6466 * set the background of a widget with gtk_widget_modify_bg() - if
6467 * you're an application - or gtk_style_set_background() - if you're
6468 * implementing a custom widget.)
6470 * See also gdk_window_set_background_pattern().
6473 gdk_window_set_background (GdkWindow *window,
6474 const GdkColor *color)
6476 cairo_pattern_t *pattern;
6478 g_return_if_fail (GDK_IS_WINDOW (window));
6480 pattern = cairo_pattern_create_rgb (color->red / 65535.,
6481 color->green / 65535.,
6482 color->blue / 65535.);
6484 gdk_window_set_background_pattern (window, pattern);
6486 cairo_pattern_destroy (pattern);
6490 * gdk_window_set_background_rgba:
6491 * @window: a #GdkWindow
6492 * @rgba: a #GdkRGBA color
6494 * Sets the background color of @window.
6496 * See also gdk_window_set_background_pattern().
6499 gdk_window_set_background_rgba (GdkWindow *window,
6502 cairo_pattern_t *pattern;
6504 g_return_if_fail (GDK_IS_WINDOW (window));
6505 g_return_if_fail (rgba != NULL);
6507 pattern = cairo_pattern_create_rgba (rgba->red, rgba->green,
6508 rgba->blue, rgba->alpha);
6510 gdk_window_set_background_pattern (window, pattern);
6512 cairo_pattern_destroy (pattern);
6516 * gdk_window_set_background_pattern:
6517 * @window: a #GdkWindow
6518 * @pattern: (allow-none): a pattern to use, or %NULL
6520 * Sets the background of @window.
6522 * A background of %NULL means that the window will inherit its
6523 * background form its parent window.
6525 * The windowing system will normally fill a window with its background
6526 * when the window is obscured then exposed.
6529 gdk_window_set_background_pattern (GdkWindow *window,
6530 cairo_pattern_t *pattern)
6532 g_return_if_fail (GDK_IS_WINDOW (window));
6534 if (window->input_only)
6538 cairo_pattern_reference (pattern);
6539 if (window->background)
6540 cairo_pattern_destroy (window->background);
6541 window->background = pattern;
6543 if (gdk_window_has_impl (window))
6545 GdkWindowImplClass *impl_class = GDK_WINDOW_IMPL_GET_CLASS (window->impl);
6546 impl_class->set_background (window, pattern);
6549 gdk_window_invalidate_rect_full (window, NULL, TRUE, CLEAR_BG_ALL);
6553 * gdk_window_get_background_pattern:
6556 * Gets the pattern used to clear the background on @window. If @window
6557 * does not have its own background and reuses the parent's, %NULL is
6558 * returned and you'll have to query it yourself.
6560 * Returns: (transfer none): The pattern to use for the background or
6561 * %NULL to use the parent's background.
6566 gdk_window_get_background_pattern (GdkWindow *window)
6568 g_return_val_if_fail (GDK_IS_WINDOW (window), NULL);
6570 return window->background;
6574 gdk_window_set_cursor_internal (GdkWindow *window,
6578 if (GDK_WINDOW_DESTROYED (window))
6581 if (window->window_type == GDK_WINDOW_ROOT ||
6582 window->window_type == GDK_WINDOW_FOREIGN)
6583 GDK_WINDOW_IMPL_GET_CLASS (window->impl)->set_device_cursor (window, device, cursor);
6586 GdkPointerWindowInfo *pointer_info;
6587 GdkDisplay *display;
6589 display = gdk_window_get_display (window);
6590 pointer_info = _gdk_display_get_pointer_info (display, device);
6592 if (_gdk_window_event_parent_of (window, pointer_info->window_under_pointer))
6593 update_cursor (display, device);
6598 * gdk_window_get_cursor:
6599 * @window: a #GdkWindow
6601 * Retrieves a #GdkCursor pointer for the cursor currently set on the
6602 * specified #GdkWindow, or %NULL. If the return value is %NULL then
6603 * there is no custom cursor set on the specified window, and it is
6604 * using the cursor for its parent window.
6606 * Return value: (transfer none): a #GdkCursor, or %NULL. The returned
6607 * object is owned by the #GdkWindow and should not be unreferenced
6608 * directly. Use gdk_window_set_cursor() to unset the cursor of the
6614 gdk_window_get_cursor (GdkWindow *window)
6616 g_return_val_if_fail (GDK_IS_WINDOW (window), NULL);
6618 return window->cursor;
6622 * gdk_window_set_cursor:
6623 * @window: a #GdkWindow
6624 * @cursor: (allow-none): a cursor
6626 * Sets the default mouse pointer for a #GdkWindow. Use gdk_cursor_new_for_display()
6627 * or gdk_cursor_new_from_pixbuf() to create the cursor. To make the cursor
6628 * invisible, use %GDK_BLANK_CURSOR. Passing %NULL for the @cursor argument
6629 * to gdk_window_set_cursor() means that @window will use the cursor of its
6630 * parent window. Most windows should use this default.
6633 gdk_window_set_cursor (GdkWindow *window,
6636 GdkDisplay *display;
6638 g_return_if_fail (GDK_IS_WINDOW (window));
6640 display = gdk_window_get_display (window);
6644 g_object_unref (window->cursor);
6645 window->cursor = NULL;
6648 if (!GDK_WINDOW_DESTROYED (window))
6650 GdkDeviceManager *device_manager;
6654 window->cursor = g_object_ref (cursor);
6656 device_manager = gdk_display_get_device_manager (display);
6657 devices = gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_MASTER);
6659 for (d = devices; d; d = d->next)
6665 if (gdk_device_get_source (device) == GDK_SOURCE_KEYBOARD)
6668 gdk_window_set_cursor_internal (window, device, window->cursor);
6671 g_list_free (devices);
6672 g_object_notify (G_OBJECT (window), "cursor");
6677 * gdk_window_get_device_cursor:
6678 * @window: a #GdkWindow.
6679 * @device: a master, pointer #GdkDevice.
6681 * Retrieves a #GdkCursor pointer for the @device currently set on the
6682 * specified #GdkWindow, or %NULL. If the return value is %NULL then
6683 * there is no custom cursor set on the specified window, and it is
6684 * using the cursor for its parent window.
6686 * Returns: (transfer none): a #GdkCursor, or %NULL. The returned
6687 * object is owned by the #GdkWindow and should not be unreferenced
6688 * directly. Use gdk_window_set_cursor() to unset the cursor of the
6694 gdk_window_get_device_cursor (GdkWindow *window,
6697 g_return_val_if_fail (GDK_IS_WINDOW (window), NULL);
6698 g_return_val_if_fail (GDK_IS_DEVICE (device), NULL);
6699 g_return_val_if_fail (gdk_device_get_source (device) != GDK_SOURCE_KEYBOARD, NULL);
6700 g_return_val_if_fail (gdk_device_get_device_type (device) == GDK_DEVICE_TYPE_MASTER, NULL);
6702 return g_hash_table_lookup (window->device_cursor, device);
6706 * gdk_window_set_device_cursor:
6707 * @window: a #Gdkwindow
6708 * @device: a master, pointer #GdkDevice
6709 * @cursor: a #GdkCursor
6711 * Sets a specific #GdkCursor for a given device when it gets inside @window.
6712 * Use gdk_cursor_new_for_display() or gdk_cursor_new_from_pixbuf() to create
6713 * the cursor. To make the cursor invisible, use %GDK_BLANK_CURSOR. Passing
6714 * %NULL for the @cursor argument to gdk_window_set_cursor() means that
6715 * @window will use the cursor of its parent window. Most windows should
6721 gdk_window_set_device_cursor (GdkWindow *window,
6725 g_return_if_fail (GDK_IS_WINDOW (window));
6726 g_return_if_fail (GDK_IS_DEVICE (device));
6727 g_return_if_fail (gdk_device_get_source (device) != GDK_SOURCE_KEYBOARD);
6728 g_return_if_fail (gdk_device_get_device_type (device) == GDK_DEVICE_TYPE_MASTER);
6731 g_hash_table_remove (window->device_cursor, device);
6733 g_hash_table_replace (window->device_cursor, device, g_object_ref (cursor));
6735 gdk_window_set_cursor_internal (window, device, cursor);
6739 * gdk_window_get_geometry:
6740 * @window: a #GdkWindow
6741 * @x: (out) (allow-none): return location for X coordinate of window (relative to its parent)
6742 * @y: (out) (allow-none): return location for Y coordinate of window (relative to its parent)
6743 * @width: (out) (allow-none): return location for width of window
6744 * @height: (out) (allow-none): return location for height of window
6746 * Any of the return location arguments to this function may be %NULL,
6747 * if you aren't interested in getting the value of that field.
6749 * The X and Y coordinates returned are relative to the parent window
6750 * of @window, which for toplevels usually means relative to the
6751 * window decorations (titlebar, etc.) rather than relative to the
6752 * root window (screen-size background window).
6754 * On the X11 platform, the geometry is obtained from the X server,
6755 * so reflects the latest position of @window; this may be out-of-sync
6756 * with the position of @window delivered in the most-recently-processed
6757 * #GdkEventConfigure. gdk_window_get_position() in contrast gets the
6758 * position from the most recent configure event.
6761 * If @window is not a toplevel, it is <emphasis>much</emphasis> better
6762 * to call gdk_window_get_position(), gdk_window_get_width() and
6763 * gdk_window_get_height() instead, because it avoids the roundtrip to
6764 * the X server and because these functions support the full 32-bit
6765 * coordinate space, whereas gdk_window_get_geometry() is restricted to
6766 * the 16-bit coordinates of X11.
6770 gdk_window_get_geometry (GdkWindow *window,
6777 GdkWindowImplClass *impl_class;
6781 GDK_NOTE (MULTIHEAD,
6782 g_message ("gdk_window_get_geometry(): Window needs "
6783 "to be non-NULL to be multi head safe"));
6784 window = gdk_screen_get_root_window ((gdk_screen_get_default ()));
6787 g_return_if_fail (GDK_IS_WINDOW (window));
6789 if (!GDK_WINDOW_DESTROYED (window))
6791 if (gdk_window_has_impl (window))
6793 impl_class = GDK_WINDOW_IMPL_GET_CLASS (window->impl);
6794 impl_class->get_geometry (window, x, y,
6796 /* This reports the position wrt to the native parent, we need to convert
6797 it to be relative to the client side parent */
6798 parent = window->parent;
6799 if (parent && !gdk_window_has_impl (parent))
6802 *x -= parent->abs_x;
6804 *y -= parent->abs_y;
6814 *width = window->width;
6816 *height = window->height;
6822 * gdk_window_get_width:
6823 * @window: a #GdkWindow
6825 * Returns the width of the given @window.
6827 * On the X11 platform the returned size is the size reported in the
6828 * most-recently-processed configure event, rather than the current
6829 * size on the X server.
6831 * Returns: The width of @window
6836 gdk_window_get_width (GdkWindow *window)
6838 g_return_val_if_fail (GDK_IS_WINDOW (window), 0);
6840 return window->width;
6844 * gdk_window_get_height:
6845 * @window: a #GdkWindow
6847 * Returns the height of the given @window.
6849 * On the X11 platform the returned size is the size reported in the
6850 * most-recently-processed configure event, rather than the current
6851 * size on the X server.
6853 * Returns: The height of @window
6858 gdk_window_get_height (GdkWindow *window)
6860 g_return_val_if_fail (GDK_IS_WINDOW (window), 0);
6862 return window->height;
6866 * gdk_window_get_origin:
6867 * @window: a #GdkWindow
6868 * @x: (out) (allow-none): return location for X coordinate
6869 * @y: (out) (allow-none): return location for Y coordinate
6871 * Obtains the position of a window in root window coordinates.
6872 * (Compare with gdk_window_get_position() and
6873 * gdk_window_get_geometry() which return the position of a window
6874 * relative to its parent window.)
6876 * Return value: not meaningful, ignore
6879 gdk_window_get_origin (GdkWindow *window,
6883 GdkWindowImplClass *impl_class;
6885 g_return_val_if_fail (GDK_IS_WINDOW (window), 0);
6887 if (GDK_WINDOW_DESTROYED (window))
6896 impl_class = GDK_WINDOW_IMPL_GET_CLASS (window->impl);
6897 impl_class->get_root_coords (window,
6906 * gdk_window_get_root_coords:
6907 * @window: a #GdkWindow
6908 * @x: X coordinate in window
6909 * @y: Y coordinate in window
6910 * @root_x: (out): return location for X coordinate
6911 * @root_y: (out): return location for Y coordinate
6913 * Obtains the position of a window position in root
6914 * window coordinates. This is similar to
6915 * gdk_window_get_origin() but allows you go pass
6916 * in any position in the window, not just the origin.
6921 gdk_window_get_root_coords (GdkWindow *window,
6927 GdkWindowImplClass *impl_class;
6929 g_return_if_fail (GDK_IS_WINDOW (window));
6931 if (GDK_WINDOW_DESTROYED (window))
6940 impl_class = GDK_WINDOW_IMPL_GET_CLASS (window->impl);
6941 impl_class->get_root_coords (window,
6948 * gdk_window_coords_to_parent:
6949 * @window: a child window
6950 * @x: X coordinate in child's coordinate system
6951 * @y: Y coordinate in child's coordinate system
6952 * @parent_x: (out) (allow-none): return location for X coordinate
6953 * in parent's coordinate system, or %NULL
6954 * @parent_y: (out) (allow-none): return location for Y coordinate
6955 * in parent's coordinate system, or %NULL
6957 * Transforms window coordinates from a child window to its parent
6958 * window, where the parent window is the normal parent as returned by
6959 * gdk_window_get_parent() for normal windows, and the window's
6960 * embedder as returned by gdk_offscreen_window_get_embedder() for
6961 * offscreen windows.
6963 * For normal windows, calling this function is equivalent to adding
6964 * the return values of gdk_window_get_position() to the child coordinates.
6965 * For offscreen windows however (which can be arbitrarily transformed),
6966 * this function calls the GdkWindow::to-embedder: signal to translate
6969 * You should always use this function when writing generic code that
6970 * walks up a window hierarchy.
6972 * See also: gdk_window_coords_from_parent()
6977 gdk_window_coords_to_parent (GdkWindow *window,
6983 g_return_if_fail (GDK_IS_WINDOW (window));
6985 if (gdk_window_is_offscreen (window))
6989 to_embedder (window, x, y, &px, &py);
7000 *parent_x = x + window->x;
7003 *parent_y = y + window->y;
7008 * gdk_window_coords_from_parent:
7009 * @window: a child window
7010 * @parent_x: X coordinate in parent's coordinate system
7011 * @parent_y: Y coordinate in parent's coordinate system
7012 * @x: (out) (allow-none): return location for X coordinate in child's coordinate system
7013 * @y: (out) (allow-none): return location for Y coordinate in child's coordinate system
7015 * Transforms window coordinates from a parent window to a child
7016 * window, where the parent window is the normal parent as returned by
7017 * gdk_window_get_parent() for normal windows, and the window's
7018 * embedder as returned by gdk_offscreen_window_get_embedder() for
7019 * offscreen windows.
7021 * For normal windows, calling this function is equivalent to subtracting
7022 * the return values of gdk_window_get_position() from the parent coordinates.
7023 * For offscreen windows however (which can be arbitrarily transformed),
7024 * this function calls the GdkWindow::from-embedder: signal to translate
7027 * You should always use this function when writing generic code that
7028 * walks down a window hierarchy.
7030 * See also: gdk_window_coords_to_parent()
7035 gdk_window_coords_from_parent (GdkWindow *window,
7041 g_return_if_fail (GDK_IS_WINDOW (window));
7043 if (gdk_window_is_offscreen (window))
7047 from_embedder (window, parent_x, parent_y, &cx, &cy);
7058 *x = parent_x - window->x;
7061 *y = parent_y - window->y;
7066 * gdk_window_shape_combine_region:
7067 * @window: a #GdkWindow
7068 * @shape_region: (allow-none): region of window to be non-transparent
7069 * @offset_x: X position of @shape_region in @window coordinates
7070 * @offset_y: Y position of @shape_region in @window coordinates
7072 * Makes pixels in @window outside @shape_region be transparent,
7073 * so that the window may be nonrectangular.
7075 * If @shape_region is %NULL, the shape will be unset, so the whole
7076 * window will be opaque again. @offset_x and @offset_y are ignored
7077 * if @shape_region is %NULL.
7079 * On the X11 platform, this uses an X server extension which is
7080 * widely available on most common platforms, but not available on
7081 * very old X servers, and occasionally the implementation will be
7082 * buggy. On servers without the shape extension, this function
7085 * This function works on both toplevel and child windows.
7088 gdk_window_shape_combine_region (GdkWindow *window,
7089 const cairo_region_t *shape_region,
7093 cairo_region_t *old_region, *new_region, *diff;
7095 g_return_if_fail (GDK_IS_WINDOW (window));
7097 if (GDK_WINDOW_DESTROYED (window))
7100 if (!window->shape && shape_region == NULL)
7103 window->shaped = (shape_region != NULL);
7106 cairo_region_destroy (window->shape);
7109 if (GDK_WINDOW_IS_MAPPED (window))
7110 old_region = cairo_region_copy (window->clip_region);
7114 window->shape = cairo_region_copy (shape_region);
7115 cairo_region_translate (window->shape, offset_x, offset_y);
7118 window->shape = NULL;
7120 recompute_visible_regions (window, TRUE, FALSE);
7122 if (gdk_window_has_impl (window) &&
7123 !should_apply_clip_as_shape (window))
7124 apply_shape (window, window->shape);
7128 new_region = cairo_region_copy (window->clip_region);
7130 /* New area in the window, needs invalidation */
7131 diff = cairo_region_copy (new_region);
7132 cairo_region_subtract (diff, old_region);
7134 gdk_window_invalidate_region_full (window, diff, TRUE, CLEAR_BG_ALL);
7136 cairo_region_destroy (diff);
7138 if (!gdk_window_is_toplevel (window))
7140 /* New area in the non-root parent window, needs invalidation */
7141 diff = cairo_region_copy (old_region);
7142 cairo_region_subtract (diff, new_region);
7144 /* Adjust region to parent window coords */
7145 cairo_region_translate (diff, window->x, window->y);
7147 gdk_window_invalidate_region_full (window->parent, diff, TRUE, CLEAR_BG_ALL);
7149 cairo_region_destroy (diff);
7152 cairo_region_destroy (new_region);
7153 cairo_region_destroy (old_region);
7158 do_child_shapes (GdkWindow *window,
7162 cairo_region_t *region;
7166 r.width = window->width;
7167 r.height = window->height;
7169 region = cairo_region_create_rectangle (&r);
7170 remove_child_area (window, NULL, FALSE, region);
7172 if (merge && window->shape)
7173 cairo_region_subtract (region, window->shape);
7175 gdk_window_shape_combine_region (window, region, 0, 0);
7179 * gdk_window_set_child_shapes:
7180 * @window: a #GdkWindow
7182 * Sets the shape mask of @window to the union of shape masks
7183 * for all children of @window, ignoring the shape mask of @window
7184 * itself. Contrast with gdk_window_merge_child_shapes() which includes
7185 * the shape mask of @window in the masks to be merged.
7188 gdk_window_set_child_shapes (GdkWindow *window)
7190 g_return_if_fail (GDK_IS_WINDOW (window));
7192 do_child_shapes (window, FALSE);
7196 * gdk_window_merge_child_shapes:
7197 * @window: a #GdkWindow
7199 * Merges the shape masks for any child windows into the
7200 * shape mask for @window. i.e. the union of all masks
7201 * for @window and its children will become the new mask
7202 * for @window. See gdk_window_shape_combine_region().
7204 * This function is distinct from gdk_window_set_child_shapes()
7205 * because it includes @window's shape mask in the set of shapes to
7209 gdk_window_merge_child_shapes (GdkWindow *window)
7211 g_return_if_fail (GDK_IS_WINDOW (window));
7213 do_child_shapes (window, TRUE);
7217 * gdk_window_input_shape_combine_region:
7218 * @window: a #GdkWindow
7219 * @shape_region: region of window to be non-transparent
7220 * @offset_x: X position of @shape_region in @window coordinates
7221 * @offset_y: Y position of @shape_region in @window coordinates
7223 * Like gdk_window_shape_combine_region(), but the shape applies
7224 * only to event handling. Mouse events which happen while
7225 * the pointer position corresponds to an unset bit in the
7226 * mask will be passed on the window below @window.
7228 * An input shape is typically used with RGBA windows.
7229 * The alpha channel of the window defines which pixels are
7230 * invisible and allows for nicely antialiased borders,
7231 * and the input shape controls where the window is
7234 * On the X11 platform, this requires version 1.1 of the
7237 * On the Win32 platform, this functionality is not present and the
7238 * function does nothing.
7243 gdk_window_input_shape_combine_region (GdkWindow *window,
7244 const cairo_region_t *shape_region,
7248 GdkWindowImplClass *impl_class;
7250 g_return_if_fail (GDK_IS_WINDOW (window));
7252 if (GDK_WINDOW_DESTROYED (window))
7255 if (window->input_shape)
7256 cairo_region_destroy (window->input_shape);
7260 window->input_shape = cairo_region_copy (shape_region);
7261 cairo_region_translate (window->input_shape, offset_x, offset_y);
7264 window->input_shape = NULL;
7266 if (gdk_window_has_impl (window))
7268 impl_class = GDK_WINDOW_IMPL_GET_CLASS (window->impl);
7269 impl_class->input_shape_combine_region (window, window->input_shape, 0, 0);
7272 /* Pointer may have e.g. moved outside window due to the input mask change */
7273 _gdk_synthesize_crossing_events_for_geometry_change (window);
7277 do_child_input_shapes (GdkWindow *window,
7281 cairo_region_t *region;
7285 r.width = window->width;
7286 r.height = window->height;
7288 region = cairo_region_create_rectangle (&r);
7289 remove_child_area (window, NULL, TRUE, region);
7291 if (merge && window->shape)
7292 cairo_region_subtract (region, window->shape);
7293 if (merge && window->input_shape)
7294 cairo_region_subtract (region, window->input_shape);
7296 gdk_window_input_shape_combine_region (window, region, 0, 0);
7301 * gdk_window_set_child_input_shapes:
7302 * @window: a #GdkWindow
7304 * Sets the input shape mask of @window to the union of input shape masks
7305 * for all children of @window, ignoring the input shape mask of @window
7306 * itself. Contrast with gdk_window_merge_child_input_shapes() which includes
7307 * the input shape mask of @window in the masks to be merged.
7312 gdk_window_set_child_input_shapes (GdkWindow *window)
7314 g_return_if_fail (GDK_IS_WINDOW (window));
7316 do_child_input_shapes (window, FALSE);
7320 * gdk_window_merge_child_input_shapes:
7321 * @window: a #GdkWindow
7323 * Merges the input shape masks for any child windows into the
7324 * input shape mask for @window. i.e. the union of all input masks
7325 * for @window and its children will become the new input mask
7326 * for @window. See gdk_window_input_shape_combine_region().
7328 * This function is distinct from gdk_window_set_child_input_shapes()
7329 * because it includes @window's input shape mask in the set of
7330 * shapes to be merged.
7335 gdk_window_merge_child_input_shapes (GdkWindow *window)
7337 g_return_if_fail (GDK_IS_WINDOW (window));
7339 do_child_input_shapes (window, TRUE);
7344 * gdk_window_set_static_gravities:
7345 * @window: a #GdkWindow
7346 * @use_static: %TRUE to turn on static gravity
7348 * Set the bit gravity of the given window to static, and flag it so
7349 * all children get static subwindow gravity. This is used if you are
7350 * implementing scary features that involve deep knowledge of the
7351 * windowing system. Don't worry about it unless you have to.
7353 * Return value: %TRUE if the server supports static gravity
7356 gdk_window_set_static_gravities (GdkWindow *window,
7357 gboolean use_static)
7359 GdkWindowImplClass *impl_class;
7361 g_return_val_if_fail (GDK_IS_WINDOW (window), FALSE);
7363 if (gdk_window_has_impl (window))
7365 impl_class = GDK_WINDOW_IMPL_GET_CLASS (window->impl);
7366 return impl_class->set_static_gravities (window, use_static);
7373 * gdk_window_get_composited:
7374 * @window: a #GdkWindow
7376 * Determines whether @window is composited.
7378 * See gdk_window_set_composited().
7380 * Returns: %TRUE if the window is composited.
7385 gdk_window_get_composited (GdkWindow *window)
7387 g_return_val_if_fail (GDK_IS_WINDOW (window), FALSE);
7389 return window->composited;
7393 * gdk_window_set_composited:
7394 * @window: a #GdkWindow
7395 * @composited: %TRUE to set the window as composited
7397 * Sets a #GdkWindow as composited, or unsets it. Composited
7398 * windows do not automatically have their contents drawn to
7399 * the screen. Drawing is redirected to an offscreen buffer
7400 * and an expose event is emitted on the parent of the composited
7401 * window. It is the responsibility of the parent's expose handler
7402 * to manually merge the off-screen content onto the screen in
7403 * whatever way it sees fit. See <xref linkend="composited-window-example"/>
7406 * It only makes sense for child windows to be composited; see
7407 * gdk_window_set_opacity() if you need translucent toplevel
7410 * An additional effect of this call is that the area of this
7411 * window is no longer clipped from regions marked for
7412 * invalidation on its parent. Draws done on the parent
7413 * window are also no longer clipped by the child.
7415 * This call is only supported on some systems (currently,
7416 * only X11 with new enough Xcomposite and Xdamage extensions).
7417 * You must call gdk_display_supports_composite() to check if
7418 * setting a window as composited is supported before
7419 * attempting to do so.
7424 gdk_window_set_composited (GdkWindow *window,
7425 gboolean composited)
7427 GdkDisplay *display;
7428 GdkWindowImplClass *impl_class;
7430 g_return_if_fail (GDK_IS_WINDOW (window));
7432 composited = composited != FALSE;
7434 if (window->composited == composited)
7438 gdk_window_ensure_native (window);
7440 display = gdk_window_get_display (window);
7442 impl_class = GDK_WINDOW_IMPL_GET_CLASS (window->impl);
7444 if (composited && (!gdk_display_supports_composite (display) || !impl_class->set_composited))
7446 g_warning ("gdk_window_set_composited called but "
7447 "compositing is not supported");
7451 impl_class->set_composited (window, composited);
7453 recompute_visible_regions (window, TRUE, FALSE);
7455 if (GDK_WINDOW_IS_MAPPED (window))
7456 gdk_window_invalidate_in_parent (window);
7458 window->composited = composited;
7462 * gdk_window_get_modal_hint:
7463 * @window: A toplevel #GdkWindow.
7465 * Determines whether or not the window manager is hinted that @window
7466 * has modal behaviour.
7468 * Return value: whether or not the window has the modal hint set.
7473 gdk_window_get_modal_hint (GdkWindow *window)
7475 g_return_val_if_fail (GDK_IS_WINDOW (window), FALSE);
7477 return window->modal_hint;
7481 * gdk_window_get_accept_focus:
7482 * @window: a toplevel #GdkWindow.
7484 * Determines whether or not the desktop environment shuld be hinted that
7485 * the window does not want to receive input focus.
7487 * Return value: whether or not the window should receive input focus.
7492 gdk_window_get_accept_focus (GdkWindow *window)
7494 g_return_val_if_fail (GDK_IS_WINDOW (window), FALSE);
7496 return window->accept_focus;
7500 * gdk_window_get_focus_on_map:
7501 * @window: a toplevel #GdkWindow.
7503 * Determines whether or not the desktop environment should be hinted that the
7504 * window does not want to receive input focus when it is mapped.
7506 * Return value: whether or not the window wants to receive input focus when
7512 gdk_window_get_focus_on_map (GdkWindow *window)
7514 g_return_val_if_fail (GDK_IS_WINDOW (window), FALSE);
7516 return window->focus_on_map;
7520 * gdk_window_is_input_only:
7521 * @window: a toplevel #GdkWindow
7523 * Determines whether or not the window is an input only window.
7525 * Return value: %TRUE if @window is input only
7530 gdk_window_is_input_only (GdkWindow *window)
7532 g_return_val_if_fail (GDK_IS_WINDOW (window), FALSE);
7534 return window->input_only;
7538 * gdk_window_is_shaped:
7539 * @window: a toplevel #GdkWindow
7541 * Determines whether or not the window is shaped.
7543 * Return value: %TRUE if @window is shaped
7548 gdk_window_is_shaped (GdkWindow *window)
7550 g_return_val_if_fail (GDK_IS_WINDOW (window), FALSE);
7552 return window->shaped;
7556 window_get_size_rectangle (GdkWindow *window,
7559 rect->x = rect->y = 0;
7560 rect->width = window->width;
7561 rect->height = window->height;
7564 /* Calculates the real clipping region for a window, in window coordinates,
7565 * taking into account other windows, gc clip region and gc clip mask.
7568 _gdk_window_calculate_full_clip_region (GdkWindow *window,
7569 GdkWindow *base_window,
7570 gboolean do_children,
7571 gint *base_x_offset,
7572 gint *base_y_offset)
7574 GdkRectangle visible_rect;
7575 cairo_region_t *real_clip_region;
7576 gint x_offset, y_offset;
7577 GdkWindow *parentwin, *lastwin;
7584 if (!window->viewable || window->input_only)
7585 return cairo_region_create ();
7587 window_get_size_rectangle (window, &visible_rect);
7589 /* real_clip_region is in window coordinates */
7590 real_clip_region = cairo_region_create_rectangle (&visible_rect);
7592 x_offset = y_offset = 0;
7596 parentwin = lastwin;
7598 parentwin = lastwin->parent;
7600 /* Remove the areas of all overlapping windows above parentwin in the hiearachy */
7601 for (; parentwin != NULL &&
7602 (parentwin == window || lastwin != base_window);
7603 lastwin = parentwin, parentwin = lastwin->parent)
7606 GdkRectangle real_clip_rect;
7608 if (parentwin != window)
7610 x_offset += lastwin->x;
7611 y_offset += lastwin->y;
7614 /* children is ordered in reverse stack order */
7615 for (cur = parentwin->children;
7616 cur && cur->data != lastwin;
7619 GdkWindow *child = cur->data;
7621 if (!GDK_WINDOW_IS_MAPPED (child) || child->input_only)
7624 /* Ignore offscreen children, as they don't draw in their parent and
7625 * don't take part in the clipping */
7626 if (gdk_window_is_offscreen (child))
7629 window_get_size_rectangle (child, &visible_rect);
7631 /* Convert rect to "window" coords */
7632 visible_rect.x += child->x - x_offset;
7633 visible_rect.y += child->y - y_offset;
7635 /* This shortcut is really necessary for performance when there are a lot of windows */
7636 cairo_region_get_extents (real_clip_region, &real_clip_rect);
7637 if (visible_rect.x >= real_clip_rect.x + real_clip_rect.width ||
7638 visible_rect.x + visible_rect.width <= real_clip_rect.x ||
7639 visible_rect.y >= real_clip_rect.y + real_clip_rect.height ||
7640 visible_rect.y + visible_rect.height <= real_clip_rect.y)
7643 cairo_region_subtract_rectangle (real_clip_region, &visible_rect);
7646 /* Clip to the parent */
7647 window_get_size_rectangle ((GdkWindow *)parentwin, &visible_rect);
7648 /* Convert rect to "window" coords */
7649 visible_rect.x += - x_offset;
7650 visible_rect.y += - y_offset;
7652 cairo_region_intersect_rectangle (real_clip_region, &visible_rect);
7656 *base_x_offset = x_offset;
7658 *base_y_offset = y_offset;
7660 return real_clip_region;
7664 _gdk_window_add_damage (GdkWindow *toplevel,
7665 cairo_region_t *damaged_region)
7667 GdkDisplay *display;
7668 GdkEvent event = { 0, };
7669 event.expose.type = GDK_DAMAGE;
7670 event.expose.window = toplevel;
7671 event.expose.send_event = FALSE;
7672 event.expose.region = damaged_region;
7673 cairo_region_get_extents (event.expose.region, &event.expose.area);
7674 display = gdk_window_get_display (event.expose.window);
7675 _gdk_event_queue_append (display, gdk_event_copy (&event));
7678 /* Gets the toplevel for a window as used for events,
7679 i.e. including offscreen parents */
7681 get_event_parent (GdkWindow *window)
7683 if (gdk_window_is_offscreen (window))
7684 return gdk_offscreen_window_get_embedder ((GdkWindow *)window);
7686 return window->parent;
7689 /* Gets the toplevel for a window as used for events,
7690 i.e. including offscreen parents going up to the native
7693 get_event_toplevel (GdkWindow *window)
7697 while ((parent = get_event_parent (window)) != NULL &&
7698 (parent->window_type != GDK_WINDOW_ROOT))
7705 _gdk_window_event_parent_of (GdkWindow *parent,
7716 w = get_event_parent (w);
7723 update_cursor (GdkDisplay *display,
7726 GdkWindow *cursor_window, *parent, *toplevel;
7727 GdkWindow *pointer_window;
7728 GdkWindowImplClass *impl_class;
7729 GdkPointerWindowInfo *pointer_info;
7730 GdkDeviceGrabInfo *grab;
7733 pointer_info = _gdk_display_get_pointer_info (display, device);
7734 pointer_window = pointer_info->window_under_pointer;
7736 /* We ignore the serials here and just pick the last grab
7737 we've sent, as that would shortly be used anyway. */
7738 grab = _gdk_display_get_last_device_grab (display, device);
7741 /* the pointer is not in a descendant of the grab window */
7742 !_gdk_window_event_parent_of (grab->window, pointer_window))
7744 /* use the cursor from the grab window */
7745 cursor_window = grab->window;
7749 /* otherwise use the cursor from the pointer window */
7750 cursor_window = pointer_window;
7753 /* Find the first window with the cursor actually set, as
7754 the cursor is inherited from the parent */
7755 while (cursor_window->cursor == NULL &&
7756 (parent = get_event_parent (cursor_window)) != NULL &&
7757 parent->window_type != GDK_WINDOW_ROOT)
7758 cursor_window = parent;
7760 cursor = g_hash_table_lookup (cursor_window->device_cursor, device);
7763 cursor = cursor_window->cursor;
7765 /* Set all cursors on toplevel, otherwise its tricky to keep track of
7766 * which native window has what cursor set. */
7767 toplevel = get_event_toplevel (pointer_window);
7768 impl_class = GDK_WINDOW_IMPL_GET_CLASS (toplevel->impl);
7769 impl_class->set_device_cursor (toplevel, device, cursor);
7773 point_in_window (GdkWindow *window,
7778 x >= 0 && x < window->width &&
7779 y >= 0 && y < window->height &&
7780 (window->shape == NULL ||
7781 cairo_region_contains_point (window->shape,
7783 (window->input_shape == NULL ||
7784 cairo_region_contains_point (window->input_shape,
7789 convert_native_coords_to_toplevel (GdkWindow *window,
7792 gdouble *toplevel_x,
7793 gdouble *toplevel_y)
7800 while (!gdk_window_is_toplevel (window))
7804 window = window->parent;
7814 convert_toplevel_coords_to_window (GdkWindow *window,
7822 GList *children, *l;
7828 while ((parent = get_event_parent (window)) != NULL &&
7829 (parent->window_type != GDK_WINDOW_ROOT))
7831 children = g_list_prepend (children, window);
7835 for (l = children; l != NULL; l = l->next)
7836 gdk_window_coords_from_parent (l->data, x, y, &x, &y);
7838 g_list_free (children);
7845 pick_embedded_child (GdkWindow *window,
7852 g_signal_emit (window,
7853 signals[PICK_EMBEDDED_CHILD], 0,
7860 _gdk_window_find_child_at (GdkWindow *window,
7865 double child_x, child_y;
7868 if (point_in_window (window, x, y))
7870 /* Children is ordered in reverse stack order, i.e. first is topmost */
7871 for (l = window->children; l != NULL; l = l->next)
7875 if (!GDK_WINDOW_IS_MAPPED (sub))
7878 gdk_window_coords_from_parent ((GdkWindow *)sub,
7880 &child_x, &child_y);
7881 if (point_in_window (sub, child_x, child_y))
7882 return (GdkWindow *)sub;
7885 if (window->num_offscreen_children > 0)
7887 sub = pick_embedded_child (window,
7890 return (GdkWindow *)sub;
7898 _gdk_window_find_descendant_at (GdkWindow *window,
7905 gdouble child_x, child_y;
7909 if (point_in_window (window, x, y))
7914 /* Children is ordered in reverse stack order, i.e. first is topmost */
7915 for (l = window->children; l != NULL; l = l->next)
7919 if (!GDK_WINDOW_IS_MAPPED (sub))
7922 gdk_window_coords_from_parent ((GdkWindow *)sub,
7924 &child_x, &child_y);
7925 if (point_in_window (sub, child_x, child_y))
7935 window->num_offscreen_children > 0)
7937 sub = pick_embedded_child (window,
7943 from_embedder (sub, x, y, &x, &y);
7951 /* Not in window at all */
7965 * @window: a toplevel #GdkWindow
7967 * Emits a short beep associated to @window in the appropriate
7968 * display, if supported. Otherwise, emits a short beep on
7969 * the display just as gdk_display_beep().
7974 gdk_window_beep (GdkWindow *window)
7976 GdkDisplay *display;
7977 GdkWindow *toplevel;
7979 g_return_if_fail (GDK_IS_WINDOW (window));
7981 if (GDK_WINDOW_DESTROYED (window))
7984 toplevel = get_event_toplevel (window);
7985 display = gdk_window_get_display (window);
7989 if (GDK_WINDOW_IMPL_GET_CLASS (toplevel->impl)->beep (toplevel))
7993 /* If windows fail to beep, we beep the display. */
7994 gdk_display_beep (display);
7998 * gdk_window_set_support_multidevice:
7999 * @window: a #GdkWindow.
8000 * @support_multidevice: %TRUE to enable multidevice support in @window.
8002 * This function will enable multidevice features in @window.
8004 * Multidevice aware windows will need to handle properly multiple,
8005 * per device enter/leave events, device grabs and grab ownerships.
8010 gdk_window_set_support_multidevice (GdkWindow *window,
8011 gboolean support_multidevice)
8013 g_return_if_fail (GDK_IS_WINDOW (window));
8015 if (GDK_WINDOW_DESTROYED (window))
8018 if (window->support_multidevice == support_multidevice)
8021 window->support_multidevice = support_multidevice;
8023 /* FIXME: What to do if called when some pointers are inside the window ? */
8027 * gdk_window_get_support_multidevice:
8028 * @window: a #GdkWindow.
8030 * Returns %TRUE if the window is aware of the existence of multiple
8033 * Returns: %TRUE if the window handles multidevice features.
8038 gdk_window_get_support_multidevice (GdkWindow *window)
8040 g_return_val_if_fail (GDK_IS_WINDOW (window), FALSE);
8042 if (GDK_WINDOW_DESTROYED (window))
8045 return window->support_multidevice;
8048 static const guint type_masks[] = {
8049 GDK_SUBSTRUCTURE_MASK, /* GDK_DELETE = 0 */
8050 GDK_STRUCTURE_MASK, /* GDK_DESTROY = 1 */
8051 GDK_EXPOSURE_MASK, /* GDK_EXPOSE = 2 */
8052 GDK_POINTER_MOTION_MASK, /* GDK_MOTION_NOTIFY = 3 */
8053 GDK_BUTTON_PRESS_MASK, /* GDK_BUTTON_PRESS = 4 */
8054 GDK_BUTTON_PRESS_MASK, /* GDK_2BUTTON_PRESS = 5 */
8055 GDK_BUTTON_PRESS_MASK, /* GDK_3BUTTON_PRESS = 6 */
8056 GDK_BUTTON_RELEASE_MASK, /* GDK_BUTTON_RELEASE = 7 */
8057 GDK_KEY_PRESS_MASK, /* GDK_KEY_PRESS = 8 */
8058 GDK_KEY_RELEASE_MASK, /* GDK_KEY_RELEASE = 9 */
8059 GDK_ENTER_NOTIFY_MASK, /* GDK_ENTER_NOTIFY = 10 */
8060 GDK_LEAVE_NOTIFY_MASK, /* GDK_LEAVE_NOTIFY = 11 */
8061 GDK_FOCUS_CHANGE_MASK, /* GDK_FOCUS_CHANGE = 12 */
8062 GDK_STRUCTURE_MASK, /* GDK_CONFIGURE = 13 */
8063 GDK_VISIBILITY_NOTIFY_MASK, /* GDK_MAP = 14 */
8064 GDK_VISIBILITY_NOTIFY_MASK, /* GDK_UNMAP = 15 */
8065 GDK_PROPERTY_CHANGE_MASK, /* GDK_PROPERTY_NOTIFY = 16 */
8066 GDK_PROPERTY_CHANGE_MASK, /* GDK_SELECTION_CLEAR = 17 */
8067 GDK_PROPERTY_CHANGE_MASK, /* GDK_SELECTION_REQUEST = 18 */
8068 GDK_PROPERTY_CHANGE_MASK, /* GDK_SELECTION_NOTIFY = 19 */
8069 GDK_PROXIMITY_IN_MASK, /* GDK_PROXIMITY_IN = 20 */
8070 GDK_PROXIMITY_OUT_MASK, /* GDK_PROXIMITY_OUT = 21 */
8071 GDK_ALL_EVENTS_MASK, /* GDK_DRAG_ENTER = 22 */
8072 GDK_ALL_EVENTS_MASK, /* GDK_DRAG_LEAVE = 23 */
8073 GDK_ALL_EVENTS_MASK, /* GDK_DRAG_MOTION = 24 */
8074 GDK_ALL_EVENTS_MASK, /* GDK_DRAG_STATUS = 25 */
8075 GDK_ALL_EVENTS_MASK, /* GDK_DROP_START = 26 */
8076 GDK_ALL_EVENTS_MASK, /* GDK_DROP_FINISHED = 27 */
8077 GDK_ALL_EVENTS_MASK, /* GDK_CLIENT_EVENT = 28 */
8078 GDK_VISIBILITY_NOTIFY_MASK, /* GDK_VISIBILITY_NOTIFY = 29 */
8079 GDK_EXPOSURE_MASK, /* GDK_NO_EXPOSE = 30 */
8080 GDK_SCROLL_MASK | GDK_BUTTON_PRESS_MASK,/* GDK_SCROLL= 31 */
8081 0, /* GDK_WINDOW_STATE = 32 */
8082 0, /* GDK_SETTING = 33 */
8083 0, /* GDK_OWNER_CHANGE = 34 */
8084 0, /* GDK_GRAB_BROKEN = 35 */
8085 0, /* GDK_DAMAGE = 36 */
8087 G_STATIC_ASSERT (G_N_ELEMENTS (type_masks) == GDK_EVENT_LAST);
8089 /* send motion events if the right buttons are down */
8091 update_evmask_for_button_motion (guint evmask,
8092 GdkModifierType mask)
8094 if (evmask & GDK_BUTTON_MOTION_MASK &&
8095 mask & (GDK_BUTTON1_MASK |
8100 evmask |= GDK_POINTER_MOTION_MASK;
8102 if ((evmask & GDK_BUTTON1_MOTION_MASK && mask & GDK_BUTTON1_MASK) ||
8103 (evmask & GDK_BUTTON2_MOTION_MASK && mask & GDK_BUTTON2_MASK) ||
8104 (evmask & GDK_BUTTON3_MOTION_MASK && mask & GDK_BUTTON3_MASK))
8105 evmask |= GDK_POINTER_MOTION_MASK;
8111 is_button_type (GdkEventType type)
8113 return type == GDK_BUTTON_PRESS ||
8114 type == GDK_2BUTTON_PRESS ||
8115 type == GDK_3BUTTON_PRESS ||
8116 type == GDK_BUTTON_RELEASE ||
8121 is_motion_type (GdkEventType type)
8123 return type == GDK_MOTION_NOTIFY ||
8124 type == GDK_ENTER_NOTIFY ||
8125 type == GDK_LEAVE_NOTIFY;
8129 find_common_ancestor (GdkWindow *win1,
8133 GList *path1 = NULL, *path2 = NULL;
8134 GList *list1, *list2;
8137 while (tmp != NULL && tmp->window_type != GDK_WINDOW_ROOT)
8139 path1 = g_list_prepend (path1, tmp);
8140 tmp = get_event_parent (tmp);
8144 while (tmp != NULL && tmp->window_type != GDK_WINDOW_ROOT)
8146 path2 = g_list_prepend (path2, tmp);
8147 tmp = get_event_parent (tmp);
8153 while (list1 && list2 && (list1->data == list2->data))
8156 list1 = g_list_next (list1);
8157 list2 = g_list_next (list2);
8159 g_list_free (path1);
8160 g_list_free (path2);
8166 _gdk_make_event (GdkWindow *window,
8168 GdkEvent *event_in_queue,
8169 gboolean before_event)
8171 GdkEvent *event = gdk_event_new (type);
8173 GdkModifierType the_state;
8175 the_time = gdk_event_get_time (event_in_queue);
8176 gdk_event_get_state (event_in_queue, &the_state);
8178 event->any.window = g_object_ref (window);
8179 event->any.send_event = FALSE;
8180 if (event_in_queue && event_in_queue->any.send_event)
8181 event->any.send_event = TRUE;
8185 case GDK_MOTION_NOTIFY:
8186 event->motion.time = the_time;
8187 event->motion.axes = NULL;
8188 event->motion.state = the_state;
8191 case GDK_BUTTON_PRESS:
8192 case GDK_2BUTTON_PRESS:
8193 case GDK_3BUTTON_PRESS:
8194 case GDK_BUTTON_RELEASE:
8195 event->button.time = the_time;
8196 event->button.axes = NULL;
8197 event->button.state = the_state;
8201 event->scroll.time = the_time;
8202 event->scroll.state = the_state;
8206 case GDK_KEY_RELEASE:
8207 event->key.time = the_time;
8208 event->key.state = the_state;
8211 case GDK_ENTER_NOTIFY:
8212 case GDK_LEAVE_NOTIFY:
8213 event->crossing.time = the_time;
8214 event->crossing.state = the_state;
8217 case GDK_PROPERTY_NOTIFY:
8218 event->property.time = the_time;
8219 event->property.state = the_state;
8222 case GDK_SELECTION_CLEAR:
8223 case GDK_SELECTION_REQUEST:
8224 case GDK_SELECTION_NOTIFY:
8225 event->selection.time = the_time;
8228 case GDK_PROXIMITY_IN:
8229 case GDK_PROXIMITY_OUT:
8230 event->proximity.time = the_time;
8233 case GDK_DRAG_ENTER:
8234 case GDK_DRAG_LEAVE:
8235 case GDK_DRAG_MOTION:
8236 case GDK_DRAG_STATUS:
8237 case GDK_DROP_START:
8238 case GDK_DROP_FINISHED:
8239 event->dnd.time = the_time;
8242 case GDK_FOCUS_CHANGE:
8246 case GDK_CLIENT_EVENT:
8247 case GDK_VISIBILITY_NOTIFY:
8258 _gdk_event_queue_insert_before (gdk_window_get_display (window), event_in_queue, event);
8260 _gdk_event_queue_insert_after (gdk_window_get_display (window), event_in_queue, event);
8263 _gdk_event_queue_append (gdk_window_get_display (window), event);
8269 send_crossing_event (GdkDisplay *display,
8270 GdkWindow *toplevel,
8273 GdkCrossingMode mode,
8274 GdkNotifyType notify_type,
8275 GdkWindow *subwindow,
8277 GdkDevice *source_device,
8280 GdkModifierType mask,
8282 GdkEvent *event_in_queue,
8286 guint32 window_event_mask, type_event_mask;
8287 GdkDeviceGrabInfo *grab;
8288 gboolean block_event = FALSE;
8290 grab = _gdk_display_has_device_grab (display, device, serial);
8293 !grab->owner_events)
8295 /* !owner_event => only report events wrt grab window, ignore rest */
8296 if ((GdkWindow *)window != grab->window)
8298 window_event_mask = grab->event_mask;
8301 window_event_mask = window->event_mask;
8303 if (type == GDK_LEAVE_NOTIFY)
8305 type_event_mask = GDK_LEAVE_NOTIFY_MASK;
8306 window->devices_inside = g_list_remove (window->devices_inside, device);
8308 if (!window->support_multidevice && window->devices_inside)
8310 /* Block leave events unless it's the last pointer */
8316 type_event_mask = GDK_ENTER_NOTIFY_MASK;
8318 if (!window->support_multidevice && window->devices_inside)
8320 /* Only emit enter events for the first device */
8324 if (gdk_device_get_device_type (device) == GDK_DEVICE_TYPE_MASTER &&
8325 gdk_device_get_mode (device) != GDK_MODE_DISABLED &&
8326 !g_list_find (window->devices_inside, device))
8327 window->devices_inside = g_list_prepend (window->devices_inside, device);
8333 if (window_event_mask & type_event_mask)
8335 event = _gdk_make_event ((GdkWindow *)window, type, event_in_queue, TRUE);
8336 gdk_event_set_device (event, device);
8339 gdk_event_set_source_device (event, source_device);
8341 event->crossing.time = time_;
8342 event->crossing.subwindow = subwindow;
8344 g_object_ref (subwindow);
8345 convert_toplevel_coords_to_window ((GdkWindow *)window,
8346 toplevel_x, toplevel_y,
8347 &event->crossing.x, &event->crossing.y);
8348 event->crossing.x_root = toplevel_x + toplevel->x;
8349 event->crossing.y_root = toplevel_y + toplevel->y;
8350 event->crossing.mode = mode;
8351 event->crossing.detail = notify_type;
8352 event->crossing.focus = FALSE;
8353 event->crossing.state = mask;
8358 /* The coordinates are in the toplevel window that src/dest are in.
8359 * src and dest are always (if != NULL) in the same toplevel, as
8360 * we get a leave-notify and set the window_under_pointer to null
8361 * before crossing to another toplevel.
8364 _gdk_synthesize_crossing_events (GdkDisplay *display,
8368 GdkDevice *source_device,
8369 GdkCrossingMode mode,
8372 GdkModifierType mask,
8374 GdkEvent *event_in_queue,
8376 gboolean non_linear)
8379 GdkWindow *win, *last, *next;
8383 GdkWindow *toplevel;
8384 GdkNotifyType notify_type;
8386 /* TODO: Don't send events to toplevel, as we get those from the windowing system */
8391 return; /* No crossings generated between src and dest */
8393 if (gdk_device_get_device_type (device) != GDK_DEVICE_TYPE_MASTER)
8395 if (a && gdk_window_get_device_events (src, device) == 0)
8398 if (b && gdk_window_get_device_events (dest, device) == 0)
8405 c = find_common_ancestor (a, b);
8407 non_linear |= (c != a) && (c != b);
8409 if (a) /* There might not be a source (i.e. if no previous pointer_in_window) */
8411 toplevel = gdk_window_get_toplevel (a);
8413 /* Traverse up from a to (excluding) c sending leave events */
8415 notify_type = GDK_NOTIFY_NONLINEAR;
8417 notify_type = GDK_NOTIFY_INFERIOR;
8419 notify_type = GDK_NOTIFY_ANCESTOR;
8420 send_crossing_event (display, toplevel,
8421 a, GDK_LEAVE_NOTIFY,
8424 NULL, device, source_device,
8425 toplevel_x, toplevel_y,
8433 notify_type = GDK_NOTIFY_NONLINEAR_VIRTUAL;
8435 notify_type = GDK_NOTIFY_VIRTUAL;
8438 win = get_event_parent (a);
8439 while (win != c && win->window_type != GDK_WINDOW_ROOT)
8441 send_crossing_event (display, toplevel,
8442 win, GDK_LEAVE_NOTIFY,
8446 device, source_device,
8447 toplevel_x, toplevel_y,
8453 win = get_event_parent (win);
8458 if (b) /* Might not be a dest, e.g. if we're moving out of the window */
8460 toplevel = gdk_window_get_toplevel ((GdkWindow *)b);
8462 /* Traverse down from c to b */
8466 win = get_event_parent (b);
8467 while (win != c && win->window_type != GDK_WINDOW_ROOT)
8469 path = g_list_prepend (path, win);
8470 win = get_event_parent (win);
8474 notify_type = GDK_NOTIFY_NONLINEAR_VIRTUAL;
8476 notify_type = GDK_NOTIFY_VIRTUAL;
8482 list = g_list_next (list);
8488 send_crossing_event (display, toplevel,
8489 win, GDK_ENTER_NOTIFY,
8493 device, source_device,
8494 toplevel_x, toplevel_y,
8504 notify_type = GDK_NOTIFY_NONLINEAR;
8506 notify_type = GDK_NOTIFY_ANCESTOR;
8508 notify_type = GDK_NOTIFY_INFERIOR;
8510 send_crossing_event (display, toplevel,
8511 b, GDK_ENTER_NOTIFY,
8515 device, source_device,
8516 toplevel_x, toplevel_y,
8523 /* Returns the window inside the event window with the pointer in it
8524 * at the specified coordinates, or NULL if its not in any child of
8525 * the toplevel. It also takes into account !owner_events grabs.
8528 get_pointer_window (GdkDisplay *display,
8529 GdkWindow *event_window,
8535 GdkWindow *pointer_window;
8536 GdkDeviceGrabInfo *grab;
8537 GdkPointerWindowInfo *pointer_info;
8539 pointer_info = _gdk_display_get_pointer_info (display, device);
8541 if (event_window == pointer_info->toplevel_under_pointer)
8543 _gdk_window_find_descendant_at (event_window,
8544 toplevel_x, toplevel_y,
8547 pointer_window = NULL;
8549 grab = _gdk_display_has_device_grab (display, device, serial);
8551 !grab->owner_events &&
8552 pointer_window != grab->window)
8553 pointer_window = NULL;
8555 return pointer_window;
8559 _gdk_display_set_window_under_pointer (GdkDisplay *display,
8563 GdkPointerWindowInfo *device_info;
8565 device_info = _gdk_display_get_pointer_info (display, device);
8567 if (device_info->window_under_pointer)
8568 g_object_unref (device_info->window_under_pointer);
8569 device_info->window_under_pointer = window;
8573 g_object_ref (window);
8574 update_cursor (display, device);
8577 _gdk_display_enable_motion_hints (display, device);
8582 * @window: the #GdkWindow which will own the grab (the grab window).
8583 * @owner_events: if %FALSE then all pointer events are reported with respect to
8584 * @window and are only reported if selected by @event_mask. If %TRUE then pointer
8585 * events for this application are reported as normal, but pointer events outside
8586 * this application are reported with respect to @window and only if selected by
8587 * @event_mask. In either mode, unreported events are discarded.
8588 * @event_mask: specifies the event mask, which is used in accordance with
8589 * @owner_events. Note that only pointer events (i.e. button and motion events)
8591 * @confine_to: (allow-none): If non-%NULL, the pointer will be confined to this
8592 * window during the grab. If the pointer is outside @confine_to, it will
8593 * automatically be moved to the closest edge of @confine_to and enter
8594 * and leave events will be generated as necessary.
8595 * @cursor: (allow-none): the cursor to display while the grab is active. If this is %NULL then
8596 * the normal cursors are used for @window and its descendants, and the cursor
8597 * for @window is used for all other windows.
8598 * @time_: the timestamp of the event which led to this pointer grab. This usually
8599 * comes from a #GdkEventButton struct, though %GDK_CURRENT_TIME can be used if
8600 * the time isn't known.
8602 * Grabs the pointer (usually a mouse) so that all events are passed to this
8603 * application until the pointer is ungrabbed with gdk_pointer_ungrab(), or
8604 * the grab window becomes unviewable.
8605 * This overrides any previous pointer grab by this client.
8607 * Pointer grabs are used for operations which need complete control over mouse
8608 * events, even if the mouse leaves the application.
8609 * For example in GTK+ it is used for Drag and Drop, for dragging the handle in
8610 * the #GtkHPaned and #GtkVPaned widgets.
8612 * Note that if the event mask of an X window has selected both button press and
8613 * button release events, then a button press event will cause an automatic
8614 * pointer grab until the button is released.
8615 * X does this automatically since most applications expect to receive button
8616 * press and release events in pairs.
8617 * It is equivalent to a pointer grab on the window with @owner_events set to
8620 * If you set up anything at the time you take the grab that needs to be cleaned
8621 * up when the grab ends, you should handle the #GdkEventGrabBroken events that
8622 * are emitted when the grab ends unvoluntarily.
8624 * Returns: %GDK_GRAB_SUCCESS if the grab was successful.
8626 * Deprecated: 3.0: Use gdk_device_grab() instead.
8629 gdk_pointer_grab (GdkWindow * window,
8630 gboolean owner_events,
8631 GdkEventMask event_mask,
8632 GdkWindow * confine_to,
8637 GdkDisplay *display;
8638 GdkDeviceManager *device_manager;
8640 GdkGrabStatus res = 0;
8642 GList *devices, *dev;
8644 g_return_val_if_fail (window != NULL, 0);
8645 g_return_val_if_fail (GDK_IS_WINDOW (window), 0);
8646 g_return_val_if_fail (confine_to == NULL || GDK_IS_WINDOW (confine_to), 0);
8648 /* We need a native window for confine to to work, ensure we have one */
8651 if (!gdk_window_ensure_native (confine_to))
8653 g_warning ("Can't confine to grabbed window, not native");
8658 /* Non-viewable client side window => fail */
8659 if (!_gdk_window_has_impl (window) &&
8660 !gdk_window_is_viewable (window))
8661 return GDK_GRAB_NOT_VIEWABLE;
8663 native = gdk_window_get_toplevel (window);
8664 while (gdk_window_is_offscreen (native))
8666 native = gdk_offscreen_window_get_embedder (native);
8668 if (native == NULL ||
8669 (!_gdk_window_has_impl (native) &&
8670 !gdk_window_is_viewable (native)))
8671 return GDK_GRAB_NOT_VIEWABLE;
8673 native = gdk_window_get_toplevel (native);
8676 display = gdk_window_get_display (window);
8678 serial = _gdk_display_get_next_serial (display);
8679 device_manager = gdk_display_get_device_manager (display);
8680 devices = gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_MASTER);
8682 /* FIXME: Should this be generic to all backends? */
8683 /* FIXME: What happens with extended devices? */
8684 for (dev = devices; dev; dev = dev->next)
8688 if (gdk_device_get_source (device) != GDK_SOURCE_MOUSE)
8691 res = GDK_DEVICE_GET_CLASS (device)->grab (device,
8694 get_native_grab_event_mask (event_mask),
8699 if (res == GDK_GRAB_SUCCESS)
8700 _gdk_display_add_device_grab (display,
8712 /* FIXME: handle errors when grabbing */
8714 g_list_free (devices);
8720 * gdk_keyboard_grab:
8721 * @window: the #GdkWindow which will own the grab (the grab window).
8722 * @owner_events: if %FALSE then all keyboard events are reported with respect to
8723 * @window. If %TRUE then keyboard events for this application are
8724 * reported as normal, but keyboard events outside this application
8725 * are reported with respect to @window. Both key press and key
8726 * release events are always reported, independant of the event mask
8727 * set by the application.
8728 * @time_: a timestamp from a #GdkEvent, or %GDK_CURRENT_TIME if no timestamp is
8731 * Grabs the keyboard so that all events are passed to this
8732 * application until the keyboard is ungrabbed with gdk_keyboard_ungrab().
8733 * This overrides any previous keyboard grab by this client.
8735 * If you set up anything at the time you take the grab that needs to be cleaned
8736 * up when the grab ends, you should handle the #GdkEventGrabBroken events that
8737 * are emitted when the grab ends unvoluntarily.
8739 * Returns: %GDK_GRAB_SUCCESS if the grab was successful.
8741 * Deprecated: 3.0: Use gdk_device_grab() instead.
8744 gdk_keyboard_grab (GdkWindow *window,
8745 gboolean owner_events,
8749 GdkDisplay *display;
8750 GdkDeviceManager *device_manager;
8752 GdkGrabStatus res = 0;
8754 GList *devices, *dev;
8756 g_return_val_if_fail (GDK_IS_WINDOW (window), 0);
8758 /* Non-viewable client side window => fail */
8759 if (!_gdk_window_has_impl (window) &&
8760 !gdk_window_is_viewable (window))
8761 return GDK_GRAB_NOT_VIEWABLE;
8763 native = gdk_window_get_toplevel (window);
8765 while (gdk_window_is_offscreen (native))
8767 native = gdk_offscreen_window_get_embedder (native);
8769 if (native == NULL ||
8770 (!_gdk_window_has_impl (native) &&
8771 !gdk_window_is_viewable (native)))
8772 return GDK_GRAB_NOT_VIEWABLE;
8774 native = gdk_window_get_toplevel (native);
8777 display = gdk_window_get_display (window);
8778 serial = _gdk_display_get_next_serial (display);
8779 device_manager = gdk_display_get_device_manager (display);
8780 devices = gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_MASTER);
8782 /* FIXME: Should this be generic to all backends? */
8783 /* FIXME: What happens with extended devices? */
8784 for (dev = devices; dev; dev = dev->next)
8788 if (gdk_device_get_source (device) != GDK_SOURCE_KEYBOARD)
8791 res = GDK_DEVICE_GET_CLASS (device)->grab (device,
8794 GDK_KEY_PRESS_MASK | GDK_KEY_RELEASE_MASK,
8799 if (res == GDK_GRAB_SUCCESS)
8800 _gdk_display_add_device_grab (display,
8811 /* FIXME: handle errors when grabbing */
8813 g_list_free (devices);
8819 * gdk_window_geometry_changed:
8820 * @window: an embedded offscreen #GdkWindow
8822 * This function informs GDK that the geometry of an embedded
8823 * offscreen window has changed. This is necessary for GDK to keep
8824 * track of which offscreen window the pointer is in.
8829 gdk_window_geometry_changed (GdkWindow *window)
8831 _gdk_synthesize_crossing_events_for_geometry_change (window);
8835 source_events_device_added (GdkDeviceManager *device_manager,
8840 GdkEventMask event_mask;
8841 GdkInputSource source;
8843 if (gdk_device_get_device_type (device) != GDK_DEVICE_TYPE_FLOATING)
8847 source = gdk_device_get_source (device);
8849 event_mask = GPOINTER_TO_INT (g_hash_table_lookup (window->source_event_masks,
8850 GINT_TO_POINTER (source)));
8852 gdk_window_set_device_events (window, device, event_mask);
8856 source_events_device_changed (GdkDeviceManager *device_manager,
8861 GdkInputSource source;
8862 GdkEventMask event_mask;
8866 type = gdk_device_get_device_type (device);
8867 source = gdk_device_get_source (device);
8869 event_mask = GPOINTER_TO_INT (g_hash_table_lookup (window->source_event_masks,
8870 GINT_TO_POINTER (source)));
8875 if (type == GDK_DEVICE_TYPE_FLOATING)
8877 /* The device was just floated, enable its event mask */
8878 gdk_window_set_device_events (window, device, event_mask);
8880 else if (type == GDK_DEVICE_TYPE_SLAVE)
8881 gdk_window_set_device_events (window, device, 0);
8885 * gdk_window_set_source_events:
8886 * @window: a #GdkWindow
8887 * @source: a #GdkInputSource to define the source class.
8888 * @event_mask: event mask for @window
8890 * Sets the event mask for any floating device (i.e. not attached to any
8891 * visible pointer) that has the source defined as @source. This event
8892 * mask will be applied both to currently existing, newly added devices
8893 * after this call, and devices being attached/detached.
8898 gdk_window_set_source_events (GdkWindow *window,
8899 GdkInputSource source,
8900 GdkEventMask event_mask)
8902 GdkDeviceManager *device_manager;
8903 GdkDisplay *display;
8907 g_return_if_fail (GDK_IS_WINDOW (window));
8909 display = gdk_window_get_display (window);
8910 device_manager = gdk_display_get_device_manager (display);
8912 devices = gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_FLOATING);
8914 /* Set event mask for existing devices */
8915 for (d = devices; d; d = d->next)
8917 GdkDevice *device = d->data;
8919 if (source == gdk_device_get_source (device))
8920 gdk_window_set_device_events (window, device, event_mask);
8923 g_list_free (devices);
8925 /* Update accounting */
8926 if (G_UNLIKELY (!window->source_event_masks))
8927 window->source_event_masks = g_hash_table_new (NULL, NULL);
8930 g_hash_table_insert (window->source_event_masks,
8931 GUINT_TO_POINTER (source),
8932 GUINT_TO_POINTER (event_mask));
8934 g_hash_table_remove (window->source_event_masks,
8935 GUINT_TO_POINTER (source));
8937 size = g_hash_table_size (window->source_event_masks);
8939 /* Update handler if needed */
8940 if (!window->device_added_handler_id && size > 0)
8942 window->device_added_handler_id =
8943 g_signal_connect (device_manager, "device-added",
8944 G_CALLBACK (source_events_device_added), window);
8945 window->device_changed_handler_id =
8946 g_signal_connect (device_manager, "device-changed",
8947 G_CALLBACK (source_events_device_changed), window);
8949 else if (window->device_added_handler_id && size == 0)
8950 g_signal_handler_disconnect (device_manager, window->device_added_handler_id);
8954 * gdk_window_get_source_events:
8955 * @window: a #GdkWindow
8956 * @source: a #GdkInputSource to define the source class.
8958 * Returns the event mask for @window corresponding to the device class specified
8961 * Returns: source event mask for @window
8964 gdk_window_get_source_events (GdkWindow *window,
8965 GdkInputSource source)
8967 g_return_val_if_fail (GDK_IS_WINDOW (window), 0);
8969 return GPOINTER_TO_UINT (g_hash_table_lookup (window->source_event_masks,
8970 GUINT_TO_POINTER (source)));
8974 do_synthesize_crossing_event (gpointer data)
8976 GdkDisplay *display;
8977 GdkWindow *changed_toplevel;
8978 GHashTableIter iter;
8979 gpointer key, value;
8982 changed_toplevel = data;
8984 changed_toplevel->synthesize_crossing_event_queued = FALSE;
8986 if (GDK_WINDOW_DESTROYED (changed_toplevel))
8989 display = gdk_window_get_display (changed_toplevel);
8990 serial = _gdk_display_get_next_serial (display);
8991 g_hash_table_iter_init (&iter, display->pointers_info);
8993 while (g_hash_table_iter_next (&iter, &key, &value))
8995 GdkWindow *new_window_under_pointer;
8996 GdkPointerWindowInfo *pointer_info = value;
8997 GdkDevice *device = key;
8999 if (changed_toplevel == pointer_info->toplevel_under_pointer)
9001 new_window_under_pointer =
9002 get_pointer_window (display, changed_toplevel,
9004 pointer_info->toplevel_x,
9005 pointer_info->toplevel_y,
9007 if (new_window_under_pointer != pointer_info->window_under_pointer)
9009 _gdk_synthesize_crossing_events (display,
9010 pointer_info->window_under_pointer,
9011 new_window_under_pointer,
9013 GDK_CROSSING_NORMAL,
9014 pointer_info->toplevel_x,
9015 pointer_info->toplevel_y,
9016 pointer_info->state,
9021 _gdk_display_set_window_under_pointer (display, device, new_window_under_pointer);
9030 _gdk_synthesize_crossing_events_for_geometry_change (GdkWindow *changed_window)
9032 GdkWindow *toplevel;
9034 toplevel = get_event_toplevel (changed_window);
9036 if (!toplevel->synthesize_crossing_event_queued)
9038 toplevel->synthesize_crossing_event_queued = TRUE;
9040 gdk_threads_add_idle_full (GDK_PRIORITY_EVENTS - 1,
9041 do_synthesize_crossing_event,
9042 g_object_ref (toplevel),
9047 /* Don't use for crossing events */
9049 get_event_window (GdkDisplay *display,
9051 GdkWindow *pointer_window,
9053 GdkModifierType mask,
9058 GdkWindow *grab_window;
9059 GdkDeviceGrabInfo *grab;
9061 grab = _gdk_display_has_device_grab (display, device, serial);
9063 if (grab != NULL && !grab->owner_events)
9065 evmask = grab->event_mask;
9066 evmask = update_evmask_for_button_motion (evmask, mask);
9068 grab_window = grab->window;
9070 if (evmask & type_masks[type])
9073 *evmask_out = evmask;
9080 while (pointer_window != NULL)
9082 evmask = pointer_window->event_mask;
9083 evmask = update_evmask_for_button_motion (evmask, mask);
9085 if (evmask & type_masks[type])
9088 *evmask_out = evmask;
9089 return pointer_window;
9092 pointer_window = get_event_parent (pointer_window);
9098 evmask = grab->event_mask;
9099 evmask = update_evmask_for_button_motion (evmask, mask);
9101 if (evmask & type_masks[type])
9104 *evmask_out = evmask;
9105 return grab->window;
9115 proxy_pointer_event (GdkDisplay *display,
9116 GdkEvent *source_event,
9119 GdkWindow *toplevel_window, *event_window;
9120 GdkWindow *pointer_window;
9121 GdkPointerWindowInfo *pointer_info;
9122 GdkDevice *device, *source_device;
9125 gdouble toplevel_x, toplevel_y;
9127 gboolean non_linear;
9129 event_window = source_event->any.window;
9130 gdk_event_get_coords (source_event, &toplevel_x, &toplevel_y);
9131 gdk_event_get_state (source_event, &state);
9132 time_ = gdk_event_get_time (source_event);
9133 device = gdk_event_get_device (source_event);
9134 source_device = gdk_event_get_source_device (source_event);
9135 pointer_info = _gdk_display_get_pointer_info (display, device);
9136 toplevel_window = convert_native_coords_to_toplevel (event_window,
9137 toplevel_x, toplevel_y,
9138 &toplevel_x, &toplevel_y);
9141 if ((source_event->type == GDK_LEAVE_NOTIFY ||
9142 source_event->type == GDK_ENTER_NOTIFY) &&
9143 (source_event->crossing.detail == GDK_NOTIFY_NONLINEAR ||
9144 source_event->crossing.detail == GDK_NOTIFY_NONLINEAR_VIRTUAL))
9147 /* If we get crossing events with subwindow unexpectedly being NULL
9148 that means there is a native subwindow that gdk doesn't know about.
9149 We track these and forward them, with the correct virtual window
9151 This is important to get right, as metacity uses gdk for the frame
9152 windows, but gdk doesn't know about the client windows reparented
9154 if (((source_event->type == GDK_LEAVE_NOTIFY &&
9155 source_event->crossing.detail == GDK_NOTIFY_INFERIOR) ||
9156 (source_event->type == GDK_ENTER_NOTIFY &&
9157 (source_event->crossing.detail == GDK_NOTIFY_VIRTUAL ||
9158 source_event->crossing.detail == GDK_NOTIFY_NONLINEAR_VIRTUAL))) &&
9159 source_event->crossing.subwindow == NULL)
9161 /* Left for an unknown (to gdk) subwindow */
9163 /* Send leave events from window under pointer to event window
9164 that will get the subwindow == NULL window */
9165 _gdk_synthesize_crossing_events (display,
9166 pointer_info->window_under_pointer,
9168 device, source_device,
9169 source_event->crossing.mode,
9170 toplevel_x, toplevel_y,
9176 /* Send subwindow == NULL event */
9177 send_crossing_event (display,
9181 source_event->crossing.mode,
9182 source_event->crossing.detail,
9184 device, source_device,
9185 toplevel_x, toplevel_y,
9190 _gdk_display_set_window_under_pointer (display, device, NULL);
9194 pointer_window = get_pointer_window (display, toplevel_window, device,
9195 toplevel_x, toplevel_y, serial);
9197 if (((source_event->type == GDK_ENTER_NOTIFY &&
9198 source_event->crossing.detail == GDK_NOTIFY_INFERIOR) ||
9199 (source_event->type == GDK_LEAVE_NOTIFY &&
9200 (source_event->crossing.detail == GDK_NOTIFY_VIRTUAL ||
9201 source_event->crossing.detail == GDK_NOTIFY_NONLINEAR_VIRTUAL))) &&
9202 source_event->crossing.subwindow == NULL)
9204 /* Entered from an unknown (to gdk) subwindow */
9206 /* Send subwindow == NULL event */
9207 send_crossing_event (display,
9211 source_event->crossing.mode,
9212 source_event->crossing.detail,
9214 device, source_device,
9215 toplevel_x, toplevel_y,
9220 /* Send enter events from event window to pointer_window */
9221 _gdk_synthesize_crossing_events (display,
9224 device, source_device,
9225 source_event->crossing.mode,
9226 toplevel_x, toplevel_y,
9229 serial, non_linear);
9230 _gdk_display_set_window_under_pointer (display, device, pointer_window);
9234 if (pointer_info->window_under_pointer != pointer_window)
9236 /* Either a toplevel crossing notify that ended up inside a child window,
9237 or a motion notify that got into another child window */
9239 /* Different than last time, send crossing events */
9240 _gdk_synthesize_crossing_events (display,
9241 pointer_info->window_under_pointer,
9243 device, source_device,
9244 GDK_CROSSING_NORMAL,
9245 toplevel_x, toplevel_y,
9248 serial, non_linear);
9249 _gdk_display_set_window_under_pointer (display, device, pointer_window);
9251 else if (source_event->type == GDK_MOTION_NOTIFY)
9253 GdkWindow *event_win;
9257 event_win = get_event_window (display,
9266 gdk_device_get_device_type (device) != GDK_DEVICE_TYPE_MASTER &&
9267 gdk_window_get_device_events (event_win, device) == 0)
9273 (evmask & GDK_POINTER_MOTION_HINT_MASK))
9275 gulong *device_serial;
9277 device_serial = g_hash_table_lookup (display->motion_hint_info, device);
9279 if (!device_serial ||
9280 (*device_serial != 0 &&
9281 serial < *device_serial))
9282 event_win = NULL; /* Ignore event */
9286 *device_serial = G_MAXULONG;
9290 if (event_win && !display->ignore_core_events)
9292 event = _gdk_make_event (event_win, GDK_MOTION_NOTIFY, source_event, FALSE);
9293 event->motion.time = time_;
9294 convert_toplevel_coords_to_window (event_win,
9295 toplevel_x, toplevel_y,
9296 &event->motion.x, &event->motion.y);
9297 event->motion.x_root = source_event->motion.x_root;
9298 event->motion.y_root = source_event->motion.y_root;
9299 event->motion.state = state;
9300 event->motion.is_hint = is_hint;
9301 event->motion.device = source_event->motion.device;
9302 event->motion.axes = g_memdup (source_event->motion.axes,
9303 sizeof (gdouble) * gdk_device_get_n_axes (source_event->motion.device));
9304 gdk_event_set_source_device (event, source_device);
9308 /* unlink all move events from queue.
9309 We handle our own, including our emulated masks. */
9313 #define GDK_ANY_BUTTON_MASK (GDK_BUTTON1_MASK | \
9314 GDK_BUTTON2_MASK | \
9315 GDK_BUTTON3_MASK | \
9316 GDK_BUTTON4_MASK | \
9320 proxy_button_event (GdkEvent *source_event,
9323 GdkWindow *toplevel_window, *event_window;
9324 GdkWindow *event_win;
9325 GdkWindow *pointer_window;
9331 gdouble toplevel_x, toplevel_y;
9332 GdkDisplay *display;
9334 GdkDevice *device, *source_device;
9336 type = source_event->any.type;
9337 event_window = source_event->any.window;
9338 gdk_event_get_coords (source_event, &toplevel_x, &toplevel_y);
9339 gdk_event_get_state (source_event, &state);
9340 time_ = gdk_event_get_time (source_event);
9341 device = gdk_event_get_device (source_event);
9342 source_device = gdk_event_get_source_device (source_event);
9343 display = gdk_window_get_display (source_event->any.window);
9344 toplevel_window = convert_native_coords_to_toplevel (event_window,
9345 toplevel_x, toplevel_y,
9346 &toplevel_x, &toplevel_y);
9348 if (type == GDK_BUTTON_PRESS &&
9349 !source_event->any.send_event &&
9350 _gdk_display_has_device_grab (display, device, serial) == NULL)
9353 _gdk_window_find_descendant_at (toplevel_window,
9354 toplevel_x, toplevel_y,
9357 /* Find the event window, that gets the grab */
9360 (parent = get_event_parent (w)) != NULL &&
9361 parent->window_type != GDK_WINDOW_ROOT)
9363 if (w->event_mask & GDK_BUTTON_PRESS_MASK)
9367 pointer_window = (GdkWindow *)w;
9369 _gdk_display_add_device_grab (display,
9375 gdk_window_get_events (pointer_window),
9379 _gdk_display_device_grab_update (display, device, source_device, serial);
9382 pointer_window = get_pointer_window (display, toplevel_window, device,
9383 toplevel_x, toplevel_y,
9386 event_win = get_event_window (display,
9392 if (event_win == NULL || display->ignore_core_events)
9395 if (gdk_device_get_device_type (device) != GDK_DEVICE_TYPE_MASTER &&
9396 gdk_window_get_device_events (event_win, device) == 0)
9399 event = _gdk_make_event (event_win, type, source_event, FALSE);
9403 case GDK_BUTTON_PRESS:
9404 case GDK_BUTTON_RELEASE:
9405 event->button.button = source_event->button.button;
9406 convert_toplevel_coords_to_window (event_win,
9407 toplevel_x, toplevel_y,
9408 &event->button.x, &event->button.y);
9409 event->button.x_root = source_event->button.x_root;
9410 event->button.y_root = source_event->button.y_root;
9411 event->button.state = state;
9412 event->button.device = source_event->button.device;
9413 event->button.axes = g_memdup (source_event->button.axes,
9414 sizeof (gdouble) * gdk_device_get_n_axes (source_event->button.device));
9416 gdk_event_set_source_device (event, source_device);
9418 if (type == GDK_BUTTON_PRESS)
9419 _gdk_event_button_generate (display, event);
9423 event->scroll.direction = source_event->scroll.direction;
9424 convert_toplevel_coords_to_window (event_win,
9425 toplevel_x, toplevel_y,
9426 &event->scroll.x, &event->scroll.y);
9427 event->scroll.x_root = source_event->scroll.x_root;
9428 event->scroll.y_root = source_event->scroll.y_root;
9429 event->scroll.state = state;
9430 event->scroll.device = source_event->scroll.device;
9431 gdk_event_set_source_device (event, source_device);
9438 return TRUE; /* Always unlink original, we want to obey the emulated event mask */
9441 #ifdef DEBUG_WINDOW_PRINTING
9443 gdk_window_print (GdkWindow *window,
9447 const char *window_types[] = {
9457 g_print ("%*s%p: [%s] %d,%d %dx%d", indent, "", window,
9458 window->user_data ? g_type_name_from_instance (window->user_data) : "no widget",
9459 window->x, window->y,
9460 window->width, window->height
9463 if (gdk_window_has_impl (window))
9465 #ifdef GDK_WINDOWING_X11
9466 g_print (" impl(0x%lx)", gdk_x11_window_get_xid (window));
9470 if (window->window_type != GDK_WINDOW_CHILD)
9471 g_print (" %s", window_types[window->window_type]);
9473 if (window->input_only)
9474 g_print (" input-only");
9477 g_print (" shaped");
9479 if (!gdk_window_is_visible ((GdkWindow *)window))
9480 g_print (" hidden");
9482 g_print (" abs[%d,%d]",
9483 window->abs_x, window->abs_y);
9485 cairo_region_get_extents (window->clip_region, &r);
9486 if (cairo_region_is_empty (window->clip_region))
9487 g_print (" clipbox[empty]");
9489 g_print (" clipbox[%d,%d %dx%d]", r.x, r.y, r.width, r.height);
9496 gdk_window_print_tree (GdkWindow *window,
9498 gboolean include_input_only)
9502 if (window->input_only && !include_input_only)
9505 gdk_window_print (window, indent);
9507 for (l = window->children; l != NULL; l = l->next)
9508 gdk_window_print_tree (l->data, indent + 4, include_input_only);
9511 #endif /* DEBUG_WINDOW_PRINTING */
9514 _gdk_windowing_got_event (GdkDisplay *display,
9519 GdkWindow *event_window;
9521 gboolean unlink_event;
9522 guint old_state, old_button;
9523 GdkDeviceGrabInfo *button_release_grab;
9524 GdkPointerWindowInfo *pointer_info;
9525 GdkDevice *device, *source_device;
9526 gboolean is_toplevel;
9528 if (gdk_event_get_time (event) != GDK_CURRENT_TIME)
9529 display->last_event_time = gdk_event_get_time (event);
9531 device = gdk_event_get_device (event);
9532 source_device = gdk_event_get_source_device (event);
9538 g_object_get (device, "input-mode", &mode, NULL);
9539 _gdk_display_device_grab_update (display, device, source_device, serial);
9541 if (mode == GDK_MODE_DISABLED ||
9542 !_gdk_display_check_grab_ownership (display, device, serial))
9544 /* Device events are blocked by another
9545 * device grab, or the device is disabled
9547 unlink_event = TRUE;
9552 event_window = event->any.window;
9556 pointer_info = _gdk_display_get_pointer_info (display, device);
9558 #ifdef DEBUG_WINDOW_PRINTING
9559 if (event->type == GDK_KEY_PRESS &&
9560 (event->key.keyval == 0xa7 ||
9561 event->key.keyval == 0xbd))
9563 gdk_window_print_tree (event_window, 0,
9564 event->key.keyval == 0xbd);
9568 if (event->type == GDK_VISIBILITY_NOTIFY)
9570 event_window->native_visibility = event->visibility.state;
9571 gdk_window_update_visibility_recursively (event_window,
9576 if (!(is_button_type (event->type) ||
9577 is_motion_type (event->type)) ||
9578 event_window->window_type == GDK_WINDOW_ROOT)
9581 is_toplevel = gdk_window_is_toplevel (event_window);
9583 if ((event->type == GDK_ENTER_NOTIFY ||
9584 event->type == GDK_LEAVE_NOTIFY) &&
9585 (event->crossing.mode == GDK_CROSSING_GRAB ||
9586 event->crossing.mode == GDK_CROSSING_UNGRAB) &&
9587 (_gdk_display_has_device_grab (display, device, serial) ||
9588 event->crossing.detail == GDK_NOTIFY_INFERIOR))
9590 /* We synthesize all crossing events due to grabs ourselves,
9591 * so we ignore the native ones caused by our native pointer_grab
9592 * calls. Otherwise we would proxy these crossing event and cause
9593 * multiple copies of crossing events for grabs.
9595 * We do want to handle grabs from other clients though, as for
9596 * instance alt-tab in metacity causes grabs like these and
9597 * we want to handle those. Thus the has_pointer_grab check.
9599 * Implicit grabs on child windows create some grabbing events
9600 * that are sent before the button press. This means we can't
9601 * detect these with the has_pointer_grab check (as the implicit
9602 * grab is only noticed when we get button press event), so we
9603 * detect these events by checking for INFERIOR enter or leave
9604 * events. These should never be a problem to filter out.
9607 /* We ended up in this window after some (perhaps other clients)
9608 grab, so update the toplevel_under_window state */
9610 event->type == GDK_ENTER_NOTIFY &&
9611 event->crossing.mode == GDK_CROSSING_UNGRAB)
9613 if (pointer_info->toplevel_under_pointer)
9614 g_object_unref (pointer_info->toplevel_under_pointer);
9615 pointer_info->toplevel_under_pointer = g_object_ref (event_window);
9618 unlink_event = TRUE;
9622 /* Track toplevel_under_pointer */
9625 if (event->type == GDK_ENTER_NOTIFY &&
9626 event->crossing.detail != GDK_NOTIFY_INFERIOR)
9628 if (pointer_info->toplevel_under_pointer)
9629 g_object_unref (pointer_info->toplevel_under_pointer);
9630 pointer_info->toplevel_under_pointer = g_object_ref (event_window);
9632 else if (event->type == GDK_LEAVE_NOTIFY &&
9633 event->crossing.detail != GDK_NOTIFY_INFERIOR &&
9634 pointer_info->toplevel_under_pointer == event_window)
9636 if (pointer_info->toplevel_under_pointer)
9637 g_object_unref (pointer_info->toplevel_under_pointer);
9638 pointer_info->toplevel_under_pointer = NULL;
9642 /* Store last pointer window and position/state */
9643 old_state = pointer_info->state;
9644 old_button = pointer_info->button;
9646 gdk_event_get_coords (event, &x, &y);
9647 convert_native_coords_to_toplevel (event_window, x, y, &x, &y);
9648 pointer_info->toplevel_x = x;
9649 pointer_info->toplevel_y = y;
9650 gdk_event_get_state (event, &pointer_info->state);
9651 if (event->type == GDK_BUTTON_PRESS ||
9652 event->type == GDK_BUTTON_RELEASE)
9653 pointer_info->button = event->button.button;
9656 (pointer_info->state != old_state ||
9657 pointer_info->button != old_button))
9658 _gdk_display_enable_motion_hints (display, device);
9660 unlink_event = FALSE;
9661 if (is_motion_type (event->type))
9662 unlink_event = proxy_pointer_event (display,
9665 else if (is_button_type (event->type))
9666 unlink_event = proxy_button_event (event,
9669 if (event->type == GDK_BUTTON_RELEASE &&
9670 !event->any.send_event)
9672 button_release_grab =
9673 _gdk_display_has_device_grab (display, device, serial);
9674 if (button_release_grab &&
9675 button_release_grab->implicit &&
9676 (event->button.state & GDK_ANY_BUTTON_MASK & ~(GDK_BUTTON1_MASK << (event->button.button - 1))) == 0)
9678 button_release_grab->serial_end = serial;
9679 button_release_grab->implicit_ungrab = FALSE;
9680 _gdk_display_device_grab_update (display, device, source_device, serial);
9687 _gdk_event_queue_remove_link (display, event_link);
9688 g_list_free_1 (event_link);
9689 gdk_event_free (event);
9694 * gdk_window_create_similar_surface:
9695 * @window: window to make new surface similar to
9696 * @content: the content for the new surface
9697 * @width: width of the new surface
9698 * @height: height of the new surface
9700 * Create a new surface that is as compatible as possible with the
9701 * given @window. For example the new surface will have the same
9702 * fallback resolution and font options as @window. Generally, the new
9703 * surface will also use the same backend as @window, unless that is
9704 * not possible for some reason. The type of the returned surface may
9705 * be examined with cairo_surface_get_type().
9707 * Initially the surface contents are all 0 (transparent if contents
9708 * have transparency, black otherwise.)
9710 * Returns: a pointer to the newly allocated surface. The caller
9711 * owns the surface and should call cairo_surface_destroy() when done
9714 * This function always returns a valid pointer, but it will return a
9715 * pointer to a "nil" surface if @other is already in an error state
9716 * or any other error occurs.
9721 gdk_window_create_similar_surface (GdkWindow * window,
9722 cairo_content_t content,
9726 cairo_surface_t *window_surface, *surface;
9728 g_return_val_if_fail (GDK_IS_WINDOW (window), NULL);
9730 window_surface = _gdk_window_ref_cairo_surface (window);
9732 switch (_gdk_rendering_mode)
9734 case GDK_RENDERING_MODE_RECORDING:
9736 cairo_rectangle_t rect = { 0, 0, width, height };
9737 surface = cairo_recording_surface_create (content, &rect);
9740 case GDK_RENDERING_MODE_IMAGE:
9741 surface = cairo_image_surface_create (content == CAIRO_CONTENT_COLOR ? CAIRO_FORMAT_RGB24 :
9742 content == CAIRO_CONTENT_ALPHA ? CAIRO_FORMAT_A8 : CAIRO_FORMAT_ARGB32,
9745 case GDK_RENDERING_MODE_SIMILAR:
9747 surface = cairo_surface_create_similar (window_surface,
9753 cairo_surface_destroy (window_surface);
9760 * @window: a #GdkWindow
9761 * @timestamp: timestamp of the event triggering the window focus
9763 * Sets keyboard focus to @window. In most cases, gtk_window_present()
9764 * should be used on a #GtkWindow, rather than calling this function.
9768 gdk_window_focus (GdkWindow *window,
9771 GDK_WINDOW_IMPL_GET_CLASS (window->impl)->focus (window, timestamp);
9775 * gdk_window_set_type_hint:
9776 * @window: A toplevel #GdkWindow
9777 * @hint: A hint of the function this window will have
9779 * The application can use this call to provide a hint to the window
9780 * manager about the functionality of a window. The window manager
9781 * can use this information when determining the decoration and behaviour
9784 * The hint must be set before the window is mapped.
9787 gdk_window_set_type_hint (GdkWindow *window,
9788 GdkWindowTypeHint hint)
9790 GDK_WINDOW_IMPL_GET_CLASS (window->impl)->set_type_hint (window, hint);
9794 * gdk_window_get_type_hint:
9795 * @window: A toplevel #GdkWindow
9797 * This function returns the type hint set for a window.
9799 * Return value: The type hint set for @window
9804 gdk_window_get_type_hint (GdkWindow *window)
9806 return GDK_WINDOW_IMPL_GET_CLASS (window->impl)->get_type_hint (window);
9810 * gdk_window_set_modal_hint:
9811 * @window: A toplevel #GdkWindow
9812 * @modal: %TRUE if the window is modal, %FALSE otherwise.
9814 * The application can use this hint to tell the window manager
9815 * that a certain window has modal behaviour. The window manager
9816 * can use this information to handle modal windows in a special
9819 * You should only use this on windows for which you have
9820 * previously called gdk_window_set_transient_for()
9823 gdk_window_set_modal_hint (GdkWindow *window,
9826 GDK_WINDOW_IMPL_GET_CLASS (window->impl)->set_modal_hint (window, modal);
9830 * gdk_window_set_skip_taskbar_hint:
9831 * @window: a toplevel #GdkWindow
9832 * @skips_taskbar: %TRUE to skip the taskbar
9834 * Toggles whether a window should appear in a task list or window
9835 * list. If a window's semantic type as specified with
9836 * gdk_window_set_type_hint() already fully describes the window, this
9837 * function should <emphasis>not</emphasis> be called in addition,
9838 * instead you should allow the window to be treated according to
9839 * standard policy for its semantic type.
9844 gdk_window_set_skip_taskbar_hint (GdkWindow *window,
9845 gboolean skips_taskbar)
9847 GDK_WINDOW_IMPL_GET_CLASS (window->impl)->set_skip_taskbar_hint (window, skips_taskbar);
9851 * gdk_window_set_skip_pager_hint:
9852 * @window: a toplevel #GdkWindow
9853 * @skips_pager: %TRUE to skip the pager
9855 * Toggles whether a window should appear in a pager (workspace
9856 * switcher, or other desktop utility program that displays a small
9857 * thumbnail representation of the windows on the desktop). If a
9858 * window's semantic type as specified with gdk_window_set_type_hint()
9859 * already fully describes the window, this function should
9860 * <emphasis>not</emphasis> be called in addition, instead you should
9861 * allow the window to be treated according to standard policy for
9862 * its semantic type.
9867 gdk_window_set_skip_pager_hint (GdkWindow *window,
9868 gboolean skips_pager)
9870 GDK_WINDOW_IMPL_GET_CLASS (window->impl)->set_skip_pager_hint (window, skips_pager);
9874 * gdk_window_set_urgency_hint:
9875 * @window: a toplevel #GdkWindow
9876 * @urgent: %TRUE if the window is urgent
9878 * Toggles whether a window needs the user's
9884 gdk_window_set_urgency_hint (GdkWindow *window,
9887 GDK_WINDOW_IMPL_GET_CLASS (window->impl)->set_urgency_hint (window, urgent);
9891 * gdk_window_set_geometry_hints:
9892 * @window: a toplevel #GdkWindow
9893 * @geometry: geometry hints
9894 * @geom_mask: bitmask indicating fields of @geometry to pay attention to
9896 * Sets the geometry hints for @window. Hints flagged in @geom_mask
9897 * are set, hints not flagged in @geom_mask are unset.
9898 * To unset all hints, use a @geom_mask of 0 and a @geometry of %NULL.
9900 * This function provides hints to the windowing system about
9901 * acceptable sizes for a toplevel window. The purpose of
9902 * this is to constrain user resizing, but the windowing system
9903 * will typically (but is not required to) also constrain the
9904 * current size of the window to the provided values and
9905 * constrain programatic resizing via gdk_window_resize() or
9906 * gdk_window_move_resize().
9908 * Note that on X11, this effect has no effect on windows
9909 * of type %GDK_WINDOW_TEMP or windows where override redirect
9910 * has been turned on via gdk_window_set_override_redirect()
9911 * since these windows are not resizable by the user.
9913 * Since you can't count on the windowing system doing the
9914 * constraints for programmatic resizes, you should generally
9915 * call gdk_window_constrain_size() yourself to determine
9916 * appropriate sizes.
9920 gdk_window_set_geometry_hints (GdkWindow *window,
9921 const GdkGeometry *geometry,
9922 GdkWindowHints geom_mask)
9924 GDK_WINDOW_IMPL_GET_CLASS (window->impl)->set_geometry_hints (window, geometry, geom_mask);
9928 * gdk_window_set_title:
9929 * @window: a toplevel #GdkWindow
9930 * @title: title of @window
9932 * Sets the title of a toplevel window, to be displayed in the titlebar.
9933 * If you haven't explicitly set the icon name for the window
9934 * (using gdk_window_set_icon_name()), the icon name will be set to
9935 * @title as well. @title must be in UTF-8 encoding (as with all
9936 * user-readable strings in GDK/GTK+). @title may not be %NULL.
9939 gdk_window_set_title (GdkWindow *window,
9942 GDK_WINDOW_IMPL_GET_CLASS (window->impl)->set_title (window, title);
9946 * gdk_window_set_role:
9947 * @window: a toplevel #GdkWindow
9948 * @role: a string indicating its role
9950 * When using GTK+, typically you should use gtk_window_set_role() instead
9951 * of this low-level function.
9953 * The window manager and session manager use a window's role to
9954 * distinguish it from other kinds of window in the same application.
9955 * When an application is restarted after being saved in a previous
9956 * session, all windows with the same title and role are treated as
9957 * interchangeable. So if you have two windows with the same title
9958 * that should be distinguished for session management purposes, you
9959 * should set the role on those windows. It doesn't matter what string
9960 * you use for the role, as long as you have a different role for each
9961 * non-interchangeable kind of window.
9965 gdk_window_set_role (GdkWindow *window,
9968 GDK_WINDOW_IMPL_GET_CLASS (window->impl)->set_role (window, role);
9972 * gdk_window_set_startup_id:
9973 * @window: a toplevel #GdkWindow
9974 * @startup_id: a string with startup-notification identifier
9976 * When using GTK+, typically you should use gtk_window_set_startup_id()
9977 * instead of this low-level function.
9983 gdk_window_set_startup_id (GdkWindow *window,
9984 const gchar *startup_id)
9986 GDK_WINDOW_IMPL_GET_CLASS (window->impl)->set_startup_id (window, startup_id);
9990 * gdk_window_set_transient_for:
9991 * @window: a toplevel #GdkWindow
9992 * @parent: another toplevel #GdkWindow
9994 * Indicates to the window manager that @window is a transient dialog
9995 * associated with the application window @parent. This allows the
9996 * window manager to do things like center @window on @parent and
9997 * keep @window above @parent.
9999 * See gtk_window_set_transient_for() if you're using #GtkWindow or
10003 gdk_window_set_transient_for (GdkWindow *window,
10006 GDK_WINDOW_IMPL_GET_CLASS (window->impl)->set_transient_for (window, parent);
10010 * gdk_window_get_root_origin:
10011 * @window: a toplevel #GdkWindow
10012 * @x: (out): return location for X position of window frame
10013 * @y: (out): return location for Y position of window frame
10015 * Obtains the top-left corner of the window manager frame in root
10016 * window coordinates.
10020 gdk_window_get_root_origin (GdkWindow *window,
10024 GDK_WINDOW_IMPL_GET_CLASS (window->impl)->get_root_origin (window, x, y);
10028 * gdk_window_get_frame_extents:
10029 * @window: a toplevel #GdkWindow
10030 * @rect: rectangle to fill with bounding box of the window frame
10032 * Obtains the bounding box of the window, including window manager
10033 * titlebar/borders if any. The frame position is given in root window
10034 * coordinates. To get the position of the window itself (rather than
10035 * the frame) in root window coordinates, use gdk_window_get_origin().
10039 gdk_window_get_frame_extents (GdkWindow *window,
10040 GdkRectangle *rect)
10042 GDK_WINDOW_IMPL_GET_CLASS (window->impl)->get_frame_extents (window, rect);
10046 * gdk_window_set_override_redirect:
10047 * @window: a toplevel #GdkWindow
10048 * @override_redirect: %TRUE if window should be override redirect
10050 * An override redirect window is not under the control of the window manager.
10051 * This means it won't have a titlebar, won't be minimizable, etc. - it will
10052 * be entirely under the control of the application. The window manager
10053 * can't see the override redirect window at all.
10055 * Override redirect should only be used for short-lived temporary
10056 * windows, such as popup menus. #GtkMenu uses an override redirect
10057 * window in its implementation, for example.
10061 gdk_window_set_override_redirect (GdkWindow *window,
10062 gboolean override_redirect)
10064 GDK_WINDOW_IMPL_GET_CLASS (window->impl)->set_override_redirect (window, override_redirect);
10068 * gdk_window_set_accept_focus:
10069 * @window: a toplevel #GdkWindow
10070 * @accept_focus: %TRUE if the window should receive input focus
10072 * Setting @accept_focus to %FALSE hints the desktop environment that the
10073 * window doesn't want to receive input focus.
10075 * On X, it is the responsibility of the window manager to interpret this
10076 * hint. ICCCM-compliant window manager usually respect it.
10081 gdk_window_set_accept_focus (GdkWindow *window,
10082 gboolean accept_focus)
10084 GDK_WINDOW_IMPL_GET_CLASS (window->impl)->set_accept_focus (window, accept_focus);
10088 * gdk_window_set_focus_on_map:
10089 * @window: a toplevel #GdkWindow
10090 * @focus_on_map: %TRUE if the window should receive input focus when mapped
10092 * Setting @focus_on_map to %FALSE hints the desktop environment that the
10093 * window doesn't want to receive input focus when it is mapped.
10094 * focus_on_map should be turned off for windows that aren't triggered
10095 * interactively (such as popups from network activity).
10097 * On X, it is the responsibility of the window manager to interpret
10098 * this hint. Window managers following the freedesktop.org window
10099 * manager extension specification should respect it.
10104 gdk_window_set_focus_on_map (GdkWindow *window,
10105 gboolean focus_on_map)
10107 GDK_WINDOW_IMPL_GET_CLASS (window->impl)->set_focus_on_map (window, focus_on_map);
10111 * gdk_window_set_icon_list:
10112 * @window: The #GdkWindow toplevel window to set the icon of.
10113 * @pixbufs: (transfer none) (element-type GdkPixbuf):
10114 * A list of pixbufs, of different sizes.
10116 * Sets a list of icons for the window. One of these will be used
10117 * to represent the window when it has been iconified. The icon is
10118 * usually shown in an icon box or some sort of task bar. Which icon
10119 * size is shown depends on the window manager. The window manager
10120 * can scale the icon but setting several size icons can give better
10121 * image quality since the window manager may only need to scale the
10122 * icon by a small amount or not at all.
10126 gdk_window_set_icon_list (GdkWindow *window,
10129 GDK_WINDOW_IMPL_GET_CLASS (window->impl)->set_icon_list (window, pixbufs);
10133 * gdk_window_set_icon_name:
10134 * @window: a toplevel #GdkWindow
10135 * @name: (allow-none): name of window while iconified (minimized)
10137 * Windows may have a name used while minimized, distinct from the
10138 * name they display in their titlebar. Most of the time this is a bad
10139 * idea from a user interface standpoint. But you can set such a name
10140 * with this function, if you like.
10142 * After calling this with a non-%NULL @name, calls to gdk_window_set_title()
10143 * will not update the icon title.
10145 * Using %NULL for @name unsets the icon title; further calls to
10146 * gdk_window_set_title() will again update the icon title as well.
10149 gdk_window_set_icon_name (GdkWindow *window,
10152 GDK_WINDOW_IMPL_GET_CLASS (window->impl)->set_icon_name (window, name);
10156 * gdk_window_iconify:
10157 * @window: a toplevel #GdkWindow
10159 * Asks to iconify (minimize) @window. The window manager may choose
10160 * to ignore the request, but normally will honor it. Using
10161 * gtk_window_iconify() is preferred, if you have a #GtkWindow widget.
10163 * This function only makes sense when @window is a toplevel window.
10167 gdk_window_iconify (GdkWindow *window)
10169 GDK_WINDOW_IMPL_GET_CLASS (window->impl)->iconify (window);
10173 * gdk_window_deiconify:
10174 * @window: a toplevel #GdkWindow
10176 * Attempt to deiconify (unminimize) @window. On X11 the window manager may
10177 * choose to ignore the request to deiconify. When using GTK+,
10178 * use gtk_window_deiconify() instead of the #GdkWindow variant. Or better yet,
10179 * you probably want to use gtk_window_present(), which raises the window, focuses it,
10180 * unminimizes it, and puts it on the current desktop.
10184 gdk_window_deiconify (GdkWindow *window)
10186 GDK_WINDOW_IMPL_GET_CLASS (window->impl)->deiconify (window);
10190 * gdk_window_stick:
10191 * @window: a toplevel #GdkWindow
10193 * "Pins" a window such that it's on all workspaces and does not scroll
10194 * with viewports, for window managers that have scrollable viewports.
10195 * (When using #GtkWindow, gtk_window_stick() may be more useful.)
10197 * On the X11 platform, this function depends on window manager
10198 * support, so may have no effect with many window managers. However,
10199 * GDK will do the best it can to convince the window manager to stick
10200 * the window. For window managers that don't support this operation,
10201 * there's nothing you can do to force it to happen.
10205 gdk_window_stick (GdkWindow *window)
10207 GDK_WINDOW_IMPL_GET_CLASS (window->impl)->stick (window);
10211 * gdk_window_unstick:
10212 * @window: a toplevel #GdkWindow
10214 * Reverse operation for gdk_window_stick(); see gdk_window_stick(),
10215 * and gtk_window_unstick().
10219 gdk_window_unstick (GdkWindow *window)
10221 GDK_WINDOW_IMPL_GET_CLASS (window->impl)->unstick (window);
10225 * gdk_window_maximize:
10226 * @window: a toplevel #GdkWindow
10228 * Maximizes the window. If the window was already maximized, then
10229 * this function does nothing.
10231 * On X11, asks the window manager to maximize @window, if the window
10232 * manager supports this operation. Not all window managers support
10233 * this, and some deliberately ignore it or don't have a concept of
10234 * "maximized"; so you can't rely on the maximization actually
10235 * happening. But it will happen with most standard window managers,
10236 * and GDK makes a best effort to get it to happen.
10238 * On Windows, reliably maximizes the window.
10242 gdk_window_maximize (GdkWindow *window)
10244 GDK_WINDOW_IMPL_GET_CLASS (window->impl)->maximize (window);
10248 * gdk_window_unmaximize:
10249 * @window: a toplevel #GdkWindow
10251 * Unmaximizes the window. If the window wasn't maximized, then this
10252 * function does nothing.
10254 * On X11, asks the window manager to unmaximize @window, if the
10255 * window manager supports this operation. Not all window managers
10256 * support this, and some deliberately ignore it or don't have a
10257 * concept of "maximized"; so you can't rely on the unmaximization
10258 * actually happening. But it will happen with most standard window
10259 * managers, and GDK makes a best effort to get it to happen.
10261 * On Windows, reliably unmaximizes the window.
10265 gdk_window_unmaximize (GdkWindow *window)
10267 GDK_WINDOW_IMPL_GET_CLASS (window->impl)->unmaximize (window);
10271 * gdk_window_fullscreen:
10272 * @window: a toplevel #GdkWindow
10274 * Moves the window into fullscreen mode. This means the
10275 * window covers the entire screen and is above any panels
10278 * If the window was already fullscreen, then this function does nothing.
10280 * On X11, asks the window manager to put @window in a fullscreen
10281 * state, if the window manager supports this operation. Not all
10282 * window managers support this, and some deliberately ignore it or
10283 * don't have a concept of "fullscreen"; so you can't rely on the
10284 * fullscreenification actually happening. But it will happen with
10285 * most standard window managers, and GDK makes a best effort to get
10291 gdk_window_fullscreen (GdkWindow *window)
10293 GDK_WINDOW_IMPL_GET_CLASS (window->impl)->fullscreen (window);
10297 * gdk_window_unfullscreen:
10298 * @window: a toplevel #GdkWindow
10300 * Moves the window out of fullscreen mode. If the window was not
10301 * fullscreen, does nothing.
10303 * On X11, asks the window manager to move @window out of the fullscreen
10304 * state, if the window manager supports this operation. Not all
10305 * window managers support this, and some deliberately ignore it or
10306 * don't have a concept of "fullscreen"; so you can't rely on the
10307 * unfullscreenification actually happening. But it will happen with
10308 * most standard window managers, and GDK makes a best effort to get
10314 gdk_window_unfullscreen (GdkWindow *window)
10316 GDK_WINDOW_IMPL_GET_CLASS (window->impl)->unfullscreen (window);
10320 * gdk_window_set_keep_above:
10321 * @window: a toplevel #GdkWindow
10322 * @setting: whether to keep @window above other windows
10324 * Set if @window must be kept above other windows. If the
10325 * window was already above, then this function does nothing.
10327 * On X11, asks the window manager to keep @window above, if the window
10328 * manager supports this operation. Not all window managers support
10329 * this, and some deliberately ignore it or don't have a concept of
10330 * "keep above"; so you can't rely on the window being kept above.
10331 * But it will happen with most standard window managers,
10332 * and GDK makes a best effort to get it to happen.
10337 gdk_window_set_keep_above (GdkWindow *window,
10340 GDK_WINDOW_IMPL_GET_CLASS (window->impl)->set_keep_above (window, setting);
10344 * gdk_window_set_keep_below:
10345 * @window: a toplevel #GdkWindow
10346 * @setting: whether to keep @window below other windows
10348 * Set if @window must be kept below other windows. If the
10349 * window was already below, then this function does nothing.
10351 * On X11, asks the window manager to keep @window below, if the window
10352 * manager supports this operation. Not all window managers support
10353 * this, and some deliberately ignore it or don't have a concept of
10354 * "keep below"; so you can't rely on the window being kept below.
10355 * But it will happen with most standard window managers,
10356 * and GDK makes a best effort to get it to happen.
10361 gdk_window_set_keep_below (GdkWindow *window, gboolean setting)
10363 GDK_WINDOW_IMPL_GET_CLASS (window->impl)->set_keep_below (window, setting);
10367 * gdk_window_get_group:
10368 * @window: a toplevel #GdkWindow
10370 * Returns the group leader window for @window. See gdk_window_set_group().
10372 * Return value: (transfer none): the group leader window for @window
10377 gdk_window_get_group (GdkWindow *window)
10379 return GDK_WINDOW_IMPL_GET_CLASS (window->impl)->get_group (window);
10383 * gdk_window_set_group:
10384 * @window: a toplevel #GdkWindow
10385 * @leader: (allow-none): group leader window, or %NULL to restore the default group leader window
10387 * Sets the group leader window for @window. By default,
10388 * GDK sets the group leader for all toplevel windows
10389 * to a global window implicitly created by GDK. With this function
10390 * you can override this default.
10392 * The group leader window allows the window manager to distinguish
10393 * all windows that belong to a single application. It may for example
10394 * allow users to minimize/unminimize all windows belonging to an
10395 * application at once. You should only set a non-default group window
10396 * if your application pretends to be multiple applications.
10399 gdk_window_set_group (GdkWindow *window,
10402 GDK_WINDOW_IMPL_GET_CLASS (window->impl)->set_group (window, leader);
10406 * gdk_window_set_decorations:
10407 * @window: a toplevel #GdkWindow
10408 * @decorations: decoration hint mask
10410 * "Decorations" are the features the window manager adds to a toplevel #GdkWindow.
10411 * This function sets the traditional Motif window manager hints that tell the
10412 * window manager which decorations you would like your window to have.
10413 * Usually you should use gtk_window_set_decorated() on a #GtkWindow instead of
10414 * using the GDK function directly.
10416 * The @decorations argument is the logical OR of the fields in
10417 * the #GdkWMDecoration enumeration. If #GDK_DECOR_ALL is included in the
10418 * mask, the other bits indicate which decorations should be turned off.
10419 * If #GDK_DECOR_ALL is not included, then the other bits indicate
10420 * which decorations should be turned on.
10422 * Most window managers honor a decorations hint of 0 to disable all decorations,
10423 * but very few honor all possible combinations of bits.
10427 gdk_window_set_decorations (GdkWindow *window,
10428 GdkWMDecoration decorations)
10430 GDK_WINDOW_IMPL_GET_CLASS (window->impl)->set_decorations (window, decorations);
10434 * gdk_window_get_decorations:
10435 * @window: The toplevel #GdkWindow to get the decorations from
10436 * @decorations: (out): The window decorations will be written here
10438 * Returns the decorations set on the GdkWindow with
10439 * gdk_window_set_decorations().
10441 * Returns: %TRUE if the window has decorations set, %FALSE otherwise.
10444 gdk_window_get_decorations(GdkWindow *window,
10445 GdkWMDecoration *decorations)
10447 return GDK_WINDOW_IMPL_GET_CLASS (window->impl)->get_decorations (window, decorations);
10451 * gdk_window_set_functions:
10452 * @window: a toplevel #GdkWindow
10453 * @functions: bitmask of operations to allow on @window
10455 * Sets hints about the window management functions to make available
10456 * via buttons on the window frame.
10458 * On the X backend, this function sets the traditional Motif window
10459 * manager hint for this purpose. However, few window managers do
10460 * anything reliable or interesting with this hint. Many ignore it
10463 * The @functions argument is the logical OR of values from the
10464 * #GdkWMFunction enumeration. If the bitmask includes #GDK_FUNC_ALL,
10465 * then the other bits indicate which functions to disable; if
10466 * it doesn't include #GDK_FUNC_ALL, it indicates which functions to
10471 gdk_window_set_functions (GdkWindow *window,
10472 GdkWMFunction functions)
10474 GDK_WINDOW_IMPL_GET_CLASS (window->impl)->set_functions (window, functions);
10478 * gdk_window_begin_resize_drag:
10479 * @window: a toplevel #GdkWindow
10480 * @edge: the edge or corner from which the drag is started
10481 * @button: the button being used to drag
10482 * @root_x: root window X coordinate of mouse click that began the drag
10483 * @root_y: root window Y coordinate of mouse click that began the drag
10484 * @timestamp: timestamp of mouse click that began the drag (use gdk_event_get_time())
10486 * Begins a window resize operation (for a toplevel window).
10487 * You might use this function to implement a "window resize grip," for
10488 * example; in fact #GtkStatusbar uses it. The function works best
10489 * with window managers that support the <ulink url="http://www.freedesktop.org/Standards/wm-spec">Extended Window Manager Hints</ulink>, but has a
10490 * fallback implementation for other window managers.
10494 gdk_window_begin_resize_drag (GdkWindow *window,
10495 GdkWindowEdge edge,
10501 GDK_WINDOW_IMPL_GET_CLASS (window->impl)->begin_resize_drag (window, edge, button, root_x, root_y, timestamp);
10505 * gdk_window_begin_move_drag:
10506 * @window: a toplevel #GdkWindow
10507 * @button: the button being used to drag
10508 * @root_x: root window X coordinate of mouse click that began the drag
10509 * @root_y: root window Y coordinate of mouse click that began the drag
10510 * @timestamp: timestamp of mouse click that began the drag
10512 * Begins a window move operation (for a toplevel window). You might
10513 * use this function to implement a "window move grip," for
10514 * example. The function works best with window managers that support
10515 * the <ulink url="http://www.freedesktop.org/Standards/wm-spec">Extended
10516 * Window Manager Hints</ulink>, but has a fallback implementation for
10517 * other window managers.
10521 gdk_window_begin_move_drag (GdkWindow *window,
10527 GDK_WINDOW_IMPL_GET_CLASS (window->impl)->begin_move_drag (window, button, root_x, root_y, timestamp);
10531 * gdk_window_enable_synchronized_configure:
10532 * @window: a toplevel #GdkWindow
10534 * Indicates that the application will cooperate with the window
10535 * system in synchronizing the window repaint with the window
10536 * manager during resizing operations. After an application calls
10537 * this function, it must call gdk_window_configure_finished() every
10538 * time it has finished all processing associated with a set of
10539 * Configure events. Toplevel GTK+ windows automatically use this
10542 * On X, calling this function makes @window participate in the
10543 * _NET_WM_SYNC_REQUEST window manager protocol.
10548 gdk_window_enable_synchronized_configure (GdkWindow *window)
10550 GDK_WINDOW_IMPL_GET_CLASS (window->impl)->enable_synchronized_configure (window);
10554 * gdk_window_configure_finished:
10555 * @window: a toplevel #GdkWindow
10557 * Signal to the window system that the application has finished
10558 * handling Configure events it has received. Window Managers can
10559 * use this to better synchronize the frame repaint with the
10560 * application. GTK+ applications will automatically call this
10561 * function when appropriate.
10563 * This function can only be called if gdk_window_enable_synchronized_configure()
10564 * was called previously.
10569 gdk_window_configure_finished (GdkWindow *window)
10571 GDK_WINDOW_IMPL_GET_CLASS (window->impl)->configure_finished (window);
10575 * gdk_window_set_opacity:
10576 * @window: a top-level #GdkWindow
10577 * @opacity: opacity
10579 * Request the windowing system to make @window partially transparent,
10580 * with opacity 0 being fully transparent and 1 fully opaque. (Values
10581 * of the opacity parameter are clamped to the [0,1] range.)
10583 * On X11, this works only on X screens with a compositing manager
10586 * For setting up per-pixel alpha, see gdk_screen_get_rgba_visual().
10587 * For making non-toplevel windows translucent, see
10588 * gdk_window_set_composited().
10593 gdk_window_set_opacity (GdkWindow *window,
10596 GDK_WINDOW_IMPL_GET_CLASS (window->impl)->set_opacity (window, opacity);
10599 /* This function is called when the XWindow is really gone.
10602 gdk_window_destroy_notify (GdkWindow *window)
10604 GDK_WINDOW_IMPL_GET_CLASS (window->impl)->destroy_notify (window);
10608 * gdk_window_register_dnd:
10609 * @window: a #GdkWindow.
10611 * Registers a window as a potential drop destination.
10614 gdk_window_register_dnd (GdkWindow *window)
10616 GDK_WINDOW_IMPL_GET_CLASS (window->impl)->register_dnd (window);
10620 * gdk_window_get_drag_protocol:
10621 * @window: the destination window
10622 * @target: (out) (allow-none) (transfer full): location of the window
10623 * where the drop should happen. This may be @window or a proxy window,
10624 * or %NULL if @window does not support Drag and Drop.
10626 * Finds out the DND protocol supported by a window.
10628 * Returns: the supported DND protocol.
10633 gdk_window_get_drag_protocol (GdkWindow *window,
10634 GdkWindow **target)
10636 g_return_val_if_fail (GDK_IS_WINDOW (window), GDK_DRAG_PROTO_NONE);
10638 return GDK_WINDOW_IMPL_GET_CLASS (window->impl)->get_drag_protocol (window, target);
10643 * @window: the source window for this drag.
10644 * @targets: (transfer none) (element-type GdkAtom): the offered targets,
10645 * as list of #GdkAtoms
10647 * Starts a drag and creates a new drag context for it.
10648 * This function assumes that the drag is controlled by the
10649 * client pointer device, use gdk_drag_begin_for_device() to
10650 * begin a drag with a different device.
10652 * This function is called by the drag source.
10654 * Return value: (transfer full): a newly created #GdkDragContext
10657 gdk_drag_begin (GdkWindow *window,
10660 GdkDeviceManager *device_manager;
10663 device_manager = gdk_display_get_device_manager (gdk_window_get_display (window));
10664 device = gdk_device_manager_get_client_pointer (device_manager);
10666 return gdk_drag_begin_for_device (window, device, targets);
10670 * gdk_drag_begin_for_device:
10671 * @window: the source window for this drag
10672 * @device: the device that controls this drag
10673 * @targets: (transfer none) (element-type GdkAtom): the offered targets,
10674 * as list of #GdkAtoms
10676 * Starts a drag and creates a new drag context for it.
10678 * This function is called by the drag source.
10680 * Return value: (transfer full): a newly created #GdkDragContext
10683 gdk_drag_begin_for_device (GdkWindow *window,
10687 return GDK_WINDOW_IMPL_GET_CLASS (window->impl)->drag_begin (window, device, targets);
10691 * gdk_test_render_sync:
10692 * @window: a mapped #GdkWindow
10694 * Retrieves a pixel from @window to force the windowing
10695 * system to carry out any pending rendering commands.
10697 * This function is intended to be used to synchronize with rendering
10698 * pipelines, to benchmark windowing system rendering operations.
10703 gdk_test_render_sync (GdkWindow *window)
10705 GDK_WINDOW_IMPL_GET_CLASS (window->impl)->sync_rendering (window);
10709 * gdk_test_simulate_key:
10710 * @window: a #GdkWindow to simulate a key event for
10711 * @x: x coordinate within @window for the key event
10712 * @y: y coordinate within @window for the key event
10713 * @keyval: A GDK keyboard value
10714 * @modifiers: Keyboard modifiers the event is setup with
10715 * @key_pressrelease: either %GDK_KEY_PRESS or %GDK_KEY_RELEASE
10717 * This function is intended to be used in GTK+ test programs.
10718 * If (@x,@y) are > (-1,-1), it will warp the mouse pointer to
10719 * the given (@x,@y) coordinates within @window and simulate a
10720 * key press or release event.
10722 * When the mouse pointer is warped to the target location, use
10723 * of this function outside of test programs that run in their
10724 * own virtual windowing system (e.g. Xvfb) is not recommended.
10725 * If (@x,@y) are passed as (-1,-1), the mouse pointer will not
10726 * be warped and @window origin will be used as mouse pointer
10727 * location for the event.
10729 * Also, gdk_test_simulate_key() is a fairly low level function,
10730 * for most testing purposes, gtk_test_widget_send_key() is the
10731 * right function to call which will generate a key press event
10732 * followed by its accompanying key release event.
10734 * Returns: whether all actions necessary for a key event simulation
10735 * were carried out successfully
10740 gdk_test_simulate_key (GdkWindow *window,
10744 GdkModifierType modifiers,
10745 GdkEventType key_pressrelease)
10747 return GDK_WINDOW_IMPL_GET_CLASS (window->impl)
10748 ->simulate_key (window, x, y, keyval, modifiers, key_pressrelease);
10752 * gdk_test_simulate_button:
10753 * @window: a #GdkWindow to simulate a button event for
10754 * @x: x coordinate within @window for the button event
10755 * @y: y coordinate within @window for the button event
10756 * @button: Number of the pointer button for the event, usually 1, 2 or 3
10757 * @modifiers: Keyboard modifiers the event is setup with
10758 * @button_pressrelease: either %GDK_BUTTON_PRESS or %GDK_BUTTON_RELEASE
10760 * This function is intended to be used in GTK+ test programs.
10761 * It will warp the mouse pointer to the given (@x,@y) coordinates
10762 * within @window and simulate a button press or release event.
10763 * Because the mouse pointer needs to be warped to the target
10764 * location, use of this function outside of test programs that
10765 * run in their own virtual windowing system (e.g. Xvfb) is not
10768 * Also, gdk_test_simulate_button() is a fairly low level function,
10769 * for most testing purposes, gtk_test_widget_click() is the right
10770 * function to call which will generate a button press event followed
10771 * by its accompanying button release event.
10773 * Returns: whether all actions necessary for a button event simulation
10774 * were carried out successfully
10779 gdk_test_simulate_button (GdkWindow *window,
10782 guint button, /*1..3*/
10783 GdkModifierType modifiers,
10784 GdkEventType button_pressrelease)
10786 return GDK_WINDOW_IMPL_GET_CLASS (window->impl)
10787 ->simulate_button (window, x, y, button, modifiers, button_pressrelease);
10791 * gdk_property_get:
10792 * @window: a #GdkWindow
10793 * @property: the property to retrieve
10794 * @type: the desired property type, or %GDK_NONE, if any type of data
10795 * is acceptable. If this does not match the actual
10796 * type, then @actual_format and @actual_length will
10797 * be filled in, a warning will be printed to stderr
10798 * and no data will be returned.
10799 * @offset: the offset into the property at which to begin
10800 * retrieving data, in 4 byte units.
10801 * @length: the length of the data to retrieve in bytes. Data is
10802 * considered to be retrieved in 4 byte chunks, so @length
10803 * will be rounded up to the next highest 4 byte boundary
10804 * (so be careful not to pass a value that might overflow
10805 * when rounded up).
10806 * @pdelete: if %TRUE, delete the property after retrieving the
10808 * @actual_property_type: (out) (transfer none): location to store the
10809 * actual type of the property.
10810 * @actual_format: (out): location to store the actual return format of the
10811 * data; either 8, 16 or 32 bits.
10812 * @actual_length: location to store the length of the retrieved data, in
10813 * bytes. Data returned in the 32 bit format is stored
10814 * in a long variable, so the actual number of 32 bit
10815 * elements should be be calculated via
10816 * @actual_length / sizeof(glong) to ensure portability to
10818 * @data: (out) (array length=actual_length) (transfer full): location
10819 * to store a pointer to the data. The retrieved data should be
10820 * freed with g_free() when you are finished using it.
10822 * Retrieves a portion of the contents of a property. If the
10823 * property does not exist, then the function returns %FALSE,
10824 * and %GDK_NONE will be stored in @actual_property_type.
10828 * The XGetWindowProperty() function that gdk_property_get()
10829 * uses has a very confusing and complicated set of semantics.
10830 * uses has a very confusing and complicated set of semantics.
10831 * Unfortunately, gdk_property_get() makes the situation
10832 * worse instead of better (the semantics should be considered
10833 * undefined), and also prints warnings to stderr in cases where it
10834 * should return a useful error to the program. You are advised to use
10835 * XGetWindowProperty() directly until a replacement function for
10836 * gdk_property_get()
10841 * Returns: %TRUE if data was successfully received and stored
10842 * in @data, otherwise %FALSE.
10845 gdk_property_get (GdkWindow *window,
10851 GdkAtom *actual_property_type,
10852 gint *actual_format_type,
10853 gint *actual_length,
10856 return GDK_WINDOW_IMPL_GET_CLASS (window->impl)
10857 ->get_property (window, property, type, offset, length, pdelete,
10858 actual_property_type, actual_format_type,
10859 actual_length, data);
10863 * gdk_property_change: (skip)
10864 * @window: a #GdkWindow
10865 * @property: the property to change
10866 * @type: the new type for the property. If @mode is
10867 * %GDK_PROP_MODE_PREPEND or %GDK_PROP_MODE_APPEND, then this
10868 * must match the existing type or an error will occur.
10869 * @format: the new format for the property. If @mode is
10870 * %GDK_PROP_MODE_PREPEND or %GDK_PROP_MODE_APPEND, then this
10871 * must match the existing format or an error will occur.
10872 * @mode: a value describing how the new data is to be combined
10873 * with the current data.
10874 * @data: the data (a <literal>guchar *</literal>
10875 * <literal>gushort *</literal>, or <literal>gulong *</literal>,
10876 * depending on @format), cast to a <literal>guchar *</literal>.
10877 * @nelements: the number of elements of size determined by the format,
10878 * contained in @data.
10880 * Changes the contents of a property on a window.
10883 gdk_property_change (GdkWindow *window,
10888 const guchar *data,
10891 GDK_WINDOW_IMPL_GET_CLASS (window->impl)
10892 ->change_property (window, property, type, format, mode, data, nelements);
10896 * gdk_property_delete:
10897 * @window: a #GdkWindow
10898 * @property: the property to delete
10900 * Deletes a property from a window.
10903 gdk_property_delete (GdkWindow *window,
10906 GDK_WINDOW_IMPL_GET_CLASS (window->impl)->delete_property (window, property);