1 /* GTK - The GIMP Toolkit
2 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 * Boston, MA 02111-1307, USA.
21 * Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
22 * file for a list of people on the GTK+ Team. See the ChangeLog
23 * files for a list of changes. These files are distributed with
24 * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
29 #include <gdk/gdkkeysyms.h>
30 #include "gtkbindings.h"
31 #include "gtkmarshalers.h"
32 #include "gtkscrolledwindow.h"
33 #include "gtkwindow.h"
34 #include "gtkprivate.h"
39 /* scrolled window policy and size requisition handling:
41 * gtk size requisition works as follows:
42 * a widget upon size-request reports the width and height that it finds
43 * to be best suited to display its contents, including children.
44 * the width and/or height reported from a widget upon size requisition
45 * may be overidden by the user by specifying a width and/or height
46 * other than 0 through gtk_widget_set_usize().
48 * a scrolled window needs (for imlementing all three policy types) to
49 * request its width and height based on two different rationales.
50 * 1) the user wants the scrolled window to just fit into the space
51 * that it gets allocated for a specifc dimension.
52 * 1.1) this does not apply if the user specified a concrete value
53 * value for that specific dimension by either specifying usize for the
54 * scrolled window or for its child.
55 * 2) the user wants the scrolled window to take as much space up as
56 * is desired by the child for a specifc dimension (i.e. POLICY_NEVER).
58 * also, kinda obvious:
59 * 3) a user would certainly not have choosen a scrolled window as a container
60 * for the child, if the resulting allocation takes up more space than the
61 * child would have allocated without the scrolled window.
64 * A) from 1) follows: the scrolled window shouldn't request more space for a
65 * specifc dimension than is required at minimum.
66 * B) from 1.1) follows: the requisition may be overidden by usize of the scrolled
67 * window (done automatically) or by usize of the child (needs to be checked).
68 * C) from 2) follows: for POLICY_NEVER, the scrolled window simply reports the
70 * D) from 3) follows: the scrolled window child's minimum width and minimum height
71 * under A) at least correspond to the space taken up by its scrollbars.
74 #define DEFAULT_SCROLLBAR_SPACING 3
77 gboolean window_placement_set;
78 GtkCornerType real_window_placement;
79 } GtkScrolledWindowPrivate;
81 #define GTK_SCROLLED_WINDOW_GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), GTK_TYPE_SCROLLED_WINDOW, GtkScrolledWindowPrivate))
87 PROP_HSCROLLBAR_POLICY,
88 PROP_VSCROLLBAR_POLICY,
89 PROP_WINDOW_PLACEMENT,
90 PROP_WINDOW_PLACEMENT_SET,
103 static void gtk_scrolled_window_destroy (GtkObject *object);
104 static void gtk_scrolled_window_finalize (GObject *object);
105 static void gtk_scrolled_window_set_property (GObject *object,
109 static void gtk_scrolled_window_get_property (GObject *object,
114 static void gtk_scrolled_window_screen_changed (GtkWidget *widget,
115 GdkScreen *previous_screen);
116 static gint gtk_scrolled_window_expose (GtkWidget *widget,
117 GdkEventExpose *event);
118 static void gtk_scrolled_window_size_request (GtkWidget *widget,
119 GtkRequisition *requisition);
120 static void gtk_scrolled_window_size_allocate (GtkWidget *widget,
121 GtkAllocation *allocation);
122 static gint gtk_scrolled_window_scroll_event (GtkWidget *widget,
123 GdkEventScroll *event);
124 static gint gtk_scrolled_window_focus (GtkWidget *widget,
125 GtkDirectionType direction);
126 static void gtk_scrolled_window_add (GtkContainer *container,
128 static void gtk_scrolled_window_remove (GtkContainer *container,
130 static void gtk_scrolled_window_forall (GtkContainer *container,
131 gboolean include_internals,
132 GtkCallback callback,
133 gpointer callback_data);
134 static void gtk_scrolled_window_scroll_child (GtkScrolledWindow *scrolled_window,
135 GtkScrollType scroll,
136 gboolean horizontal);
137 static void gtk_scrolled_window_move_focus_out (GtkScrolledWindow *scrolled_window,
138 GtkDirectionType direction_type);
140 static void gtk_scrolled_window_relative_allocation(GtkWidget *widget,
141 GtkAllocation *allocation);
142 static void gtk_scrolled_window_adjustment_changed (GtkAdjustment *adjustment,
145 static void gtk_scrolled_window_update_real_placement (GtkScrolledWindow *scrolled_window);
147 static guint signals[LAST_SIGNAL] = {0};
149 G_DEFINE_TYPE (GtkScrolledWindow, gtk_scrolled_window, GTK_TYPE_BIN)
152 add_scroll_binding (GtkBindingSet *binding_set,
154 GdkModifierType mask,
155 GtkScrollType scroll,
158 guint keypad_keyval = keyval - GDK_Left + GDK_KP_Left;
160 gtk_binding_entry_add_signal (binding_set, keyval, mask,
162 GTK_TYPE_SCROLL_TYPE, scroll,
163 G_TYPE_BOOLEAN, horizontal);
164 gtk_binding_entry_add_signal (binding_set, keypad_keyval, mask,
166 GTK_TYPE_SCROLL_TYPE, scroll,
167 G_TYPE_BOOLEAN, horizontal);
171 add_tab_bindings (GtkBindingSet *binding_set,
172 GdkModifierType modifiers,
173 GtkDirectionType direction)
175 gtk_binding_entry_add_signal (binding_set, GDK_Tab, modifiers,
177 GTK_TYPE_DIRECTION_TYPE, direction);
178 gtk_binding_entry_add_signal (binding_set, GDK_KP_Tab, modifiers,
180 GTK_TYPE_DIRECTION_TYPE, direction);
184 gtk_scrolled_window_class_init (GtkScrolledWindowClass *class)
186 GObjectClass *gobject_class = G_OBJECT_CLASS (class);
187 GtkObjectClass *object_class;
188 GtkWidgetClass *widget_class;
189 GtkContainerClass *container_class;
190 GtkBindingSet *binding_set;
192 object_class = (GtkObjectClass*) class;
193 widget_class = (GtkWidgetClass*) class;
194 container_class = (GtkContainerClass*) class;
196 gobject_class->finalize = gtk_scrolled_window_finalize;
197 gobject_class->set_property = gtk_scrolled_window_set_property;
198 gobject_class->get_property = gtk_scrolled_window_get_property;
200 object_class->destroy = gtk_scrolled_window_destroy;
202 widget_class->screen_changed = gtk_scrolled_window_screen_changed;
203 widget_class->expose_event = gtk_scrolled_window_expose;
204 widget_class->size_request = gtk_scrolled_window_size_request;
205 widget_class->size_allocate = gtk_scrolled_window_size_allocate;
206 widget_class->scroll_event = gtk_scrolled_window_scroll_event;
207 widget_class->focus = gtk_scrolled_window_focus;
209 container_class->add = gtk_scrolled_window_add;
210 container_class->remove = gtk_scrolled_window_remove;
211 container_class->forall = gtk_scrolled_window_forall;
213 class->scrollbar_spacing = -1;
215 class->scroll_child = gtk_scrolled_window_scroll_child;
216 class->move_focus_out = gtk_scrolled_window_move_focus_out;
218 g_object_class_install_property (gobject_class,
220 g_param_spec_object ("hadjustment",
221 P_("Horizontal Adjustment"),
222 P_("The GtkAdjustment for the horizontal position"),
224 GTK_PARAM_READWRITE | G_PARAM_CONSTRUCT));
225 g_object_class_install_property (gobject_class,
227 g_param_spec_object ("vadjustment",
228 P_("Vertical Adjustment"),
229 P_("The GtkAdjustment for the vertical position"),
231 GTK_PARAM_READWRITE | G_PARAM_CONSTRUCT));
232 g_object_class_install_property (gobject_class,
233 PROP_HSCROLLBAR_POLICY,
234 g_param_spec_enum ("hscrollbar-policy",
235 P_("Horizontal Scrollbar Policy"),
236 P_("When the horizontal scrollbar is displayed"),
237 GTK_TYPE_POLICY_TYPE,
239 GTK_PARAM_READABLE | GTK_PARAM_WRITABLE));
240 g_object_class_install_property (gobject_class,
241 PROP_VSCROLLBAR_POLICY,
242 g_param_spec_enum ("vscrollbar-policy",
243 P_("Vertical Scrollbar Policy"),
244 P_("When the vertical scrollbar is displayed"),
245 GTK_TYPE_POLICY_TYPE,
247 GTK_PARAM_READABLE | GTK_PARAM_WRITABLE));
249 g_object_class_install_property (gobject_class,
250 PROP_WINDOW_PLACEMENT,
251 g_param_spec_enum ("window-placement",
252 P_("Window Placement"),
253 P_("Where the contents are located with respect to the scrollbars. This property only takes effect if \"window-placement-set\" is TRUE."),
254 GTK_TYPE_CORNER_TYPE,
256 GTK_PARAM_READABLE | GTK_PARAM_WRITABLE));
259 * GtkScrolledWindow::window-placement-set:
261 * Whether "window-placement" should be used to determine the location
262 * of the contents with respect to the scrollbars. Otherwise, the
263 * "gtk-scrolled-window-placement" setting is used.
267 g_object_class_install_property (gobject_class,
268 PROP_WINDOW_PLACEMENT_SET,
269 g_param_spec_boolean ("window-placement-set",
270 P_("Window Placement Set"),
271 P_("Whether \"window-placement\" should be used to determine the location of the contents with respect to the scrollbars."),
273 GTK_PARAM_READABLE | GTK_PARAM_WRITABLE));
274 g_object_class_install_property (gobject_class,
276 g_param_spec_enum ("shadow-type",
278 P_("Style of bevel around the contents"),
279 GTK_TYPE_SHADOW_TYPE,
281 GTK_PARAM_READABLE | GTK_PARAM_WRITABLE));
283 gtk_widget_class_install_style_property (widget_class,
284 g_param_spec_int ("scrollbar-spacing",
285 P_("Scrollbar spacing"),
286 P_("Number of pixels between the scrollbars and the scrolled window"),
289 DEFAULT_SCROLLBAR_SPACING,
290 GTK_PARAM_READABLE));
293 * GtkSettings::gtk-scrolled-window-placement:
295 * Where the contents of scrolled windows are located with respect to the
296 * scrollbars, if not overridden by the scrolled window's own placement.
300 gtk_settings_install_property (g_param_spec_enum ("gtk-scrolled-window-placement",
301 P_("Scrolled Window Placement"),
302 P_("Where the contents of scrolled windows are located with respect to the scrollbars, if not overridden by the scrolled window's own placement."),
303 GTK_TYPE_CORNER_TYPE,
305 G_PARAM_READABLE | G_PARAM_WRITABLE));
308 signals[SCROLL_CHILD] =
309 g_signal_new (I_("scroll_child"),
310 G_TYPE_FROM_CLASS (object_class),
311 G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
312 G_STRUCT_OFFSET (GtkScrolledWindowClass, scroll_child),
314 _gtk_marshal_VOID__ENUM_BOOLEAN,
316 GTK_TYPE_SCROLL_TYPE,
318 signals[MOVE_FOCUS_OUT] =
319 g_signal_new (I_("move_focus_out"),
320 G_TYPE_FROM_CLASS (object_class),
321 G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
322 G_STRUCT_OFFSET (GtkScrolledWindowClass, move_focus_out),
324 _gtk_marshal_VOID__ENUM,
326 GTK_TYPE_DIRECTION_TYPE);
328 binding_set = gtk_binding_set_by_class (class);
330 add_scroll_binding (binding_set, GDK_Left, GDK_CONTROL_MASK, GTK_SCROLL_STEP_BACKWARD, TRUE);
331 add_scroll_binding (binding_set, GDK_Right, GDK_CONTROL_MASK, GTK_SCROLL_STEP_FORWARD, TRUE);
332 add_scroll_binding (binding_set, GDK_Up, GDK_CONTROL_MASK, GTK_SCROLL_STEP_BACKWARD, FALSE);
333 add_scroll_binding (binding_set, GDK_Down, GDK_CONTROL_MASK, GTK_SCROLL_STEP_FORWARD, FALSE);
335 add_scroll_binding (binding_set, GDK_Page_Up, GDK_CONTROL_MASK, GTK_SCROLL_PAGE_BACKWARD, TRUE);
336 add_scroll_binding (binding_set, GDK_Page_Down, GDK_CONTROL_MASK, GTK_SCROLL_PAGE_FORWARD, TRUE);
337 add_scroll_binding (binding_set, GDK_Page_Up, 0, GTK_SCROLL_PAGE_BACKWARD, FALSE);
338 add_scroll_binding (binding_set, GDK_Page_Down, 0, GTK_SCROLL_PAGE_FORWARD, FALSE);
340 add_scroll_binding (binding_set, GDK_Home, GDK_CONTROL_MASK, GTK_SCROLL_START, TRUE);
341 add_scroll_binding (binding_set, GDK_End, GDK_CONTROL_MASK, GTK_SCROLL_END, TRUE);
342 add_scroll_binding (binding_set, GDK_Home, 0, GTK_SCROLL_START, FALSE);
343 add_scroll_binding (binding_set, GDK_End, 0, GTK_SCROLL_END, FALSE);
345 add_tab_bindings (binding_set, GDK_CONTROL_MASK, GTK_DIR_TAB_FORWARD);
346 add_tab_bindings (binding_set, GDK_CONTROL_MASK | GDK_SHIFT_MASK, GTK_DIR_TAB_BACKWARD);
348 g_type_class_add_private (class, sizeof (GtkScrolledWindowPrivate));
352 gtk_scrolled_window_init (GtkScrolledWindow *scrolled_window)
354 GTK_WIDGET_SET_FLAGS (scrolled_window, GTK_NO_WINDOW | GTK_CAN_FOCUS);
356 scrolled_window->hscrollbar = NULL;
357 scrolled_window->vscrollbar = NULL;
358 scrolled_window->hscrollbar_policy = GTK_POLICY_ALWAYS;
359 scrolled_window->vscrollbar_policy = GTK_POLICY_ALWAYS;
360 scrolled_window->hscrollbar_visible = FALSE;
361 scrolled_window->vscrollbar_visible = FALSE;
362 scrolled_window->focus_out = FALSE;
363 scrolled_window->window_placement = GTK_CORNER_TOP_LEFT;
364 gtk_scrolled_window_update_real_placement (scrolled_window);
368 gtk_scrolled_window_new (GtkAdjustment *hadjustment,
369 GtkAdjustment *vadjustment)
371 GtkWidget *scrolled_window;
374 g_return_val_if_fail (GTK_IS_ADJUSTMENT (hadjustment), NULL);
377 g_return_val_if_fail (GTK_IS_ADJUSTMENT (vadjustment), NULL);
379 scrolled_window = gtk_widget_new (GTK_TYPE_SCROLLED_WINDOW,
380 "hadjustment", hadjustment,
381 "vadjustment", vadjustment,
384 return scrolled_window;
388 gtk_scrolled_window_set_hadjustment (GtkScrolledWindow *scrolled_window,
389 GtkAdjustment *hadjustment)
393 g_return_if_fail (GTK_IS_SCROLLED_WINDOW (scrolled_window));
395 g_return_if_fail (GTK_IS_ADJUSTMENT (hadjustment));
397 hadjustment = (GtkAdjustment*) g_object_new (GTK_TYPE_ADJUSTMENT, NULL);
399 bin = GTK_BIN (scrolled_window);
401 if (!scrolled_window->hscrollbar)
403 gtk_widget_push_composite_child ();
404 scrolled_window->hscrollbar = gtk_hscrollbar_new (hadjustment);
405 gtk_widget_set_composite_name (scrolled_window->hscrollbar, "hscrollbar");
406 gtk_widget_pop_composite_child ();
408 gtk_widget_set_parent (scrolled_window->hscrollbar, GTK_WIDGET (scrolled_window));
409 g_object_ref (scrolled_window->hscrollbar);
410 gtk_widget_show (scrolled_window->hscrollbar);
414 GtkAdjustment *old_adjustment;
416 old_adjustment = gtk_range_get_adjustment (GTK_RANGE (scrolled_window->hscrollbar));
417 if (old_adjustment == hadjustment)
420 g_signal_handlers_disconnect_by_func (old_adjustment,
421 gtk_scrolled_window_adjustment_changed,
423 gtk_range_set_adjustment (GTK_RANGE (scrolled_window->hscrollbar),
426 hadjustment = gtk_range_get_adjustment (GTK_RANGE (scrolled_window->hscrollbar));
427 g_signal_connect (hadjustment,
429 G_CALLBACK (gtk_scrolled_window_adjustment_changed),
431 gtk_scrolled_window_adjustment_changed (hadjustment, scrolled_window);
434 gtk_widget_set_scroll_adjustments (bin->child,
435 gtk_range_get_adjustment (GTK_RANGE (scrolled_window->hscrollbar)),
436 gtk_range_get_adjustment (GTK_RANGE (scrolled_window->vscrollbar)));
438 g_object_notify (G_OBJECT (scrolled_window), "hadjustment");
442 gtk_scrolled_window_set_vadjustment (GtkScrolledWindow *scrolled_window,
443 GtkAdjustment *vadjustment)
447 g_return_if_fail (GTK_IS_SCROLLED_WINDOW (scrolled_window));
449 g_return_if_fail (GTK_IS_ADJUSTMENT (vadjustment));
451 vadjustment = (GtkAdjustment*) g_object_new (GTK_TYPE_ADJUSTMENT, NULL);
453 bin = GTK_BIN (scrolled_window);
455 if (!scrolled_window->vscrollbar)
457 gtk_widget_push_composite_child ();
458 scrolled_window->vscrollbar = gtk_vscrollbar_new (vadjustment);
459 gtk_widget_set_composite_name (scrolled_window->vscrollbar, "vscrollbar");
460 gtk_widget_pop_composite_child ();
462 gtk_widget_set_parent (scrolled_window->vscrollbar, GTK_WIDGET (scrolled_window));
463 g_object_ref (scrolled_window->vscrollbar);
464 gtk_widget_show (scrolled_window->vscrollbar);
468 GtkAdjustment *old_adjustment;
470 old_adjustment = gtk_range_get_adjustment (GTK_RANGE (scrolled_window->vscrollbar));
471 if (old_adjustment == vadjustment)
474 g_signal_handlers_disconnect_by_func (old_adjustment,
475 gtk_scrolled_window_adjustment_changed,
477 gtk_range_set_adjustment (GTK_RANGE (scrolled_window->vscrollbar),
480 vadjustment = gtk_range_get_adjustment (GTK_RANGE (scrolled_window->vscrollbar));
481 g_signal_connect (vadjustment,
483 G_CALLBACK (gtk_scrolled_window_adjustment_changed),
485 gtk_scrolled_window_adjustment_changed (vadjustment, scrolled_window);
488 gtk_widget_set_scroll_adjustments (bin->child,
489 gtk_range_get_adjustment (GTK_RANGE (scrolled_window->hscrollbar)),
490 gtk_range_get_adjustment (GTK_RANGE (scrolled_window->vscrollbar)));
492 g_object_notify (G_OBJECT (scrolled_window), "vadjustment");
496 gtk_scrolled_window_get_hadjustment (GtkScrolledWindow *scrolled_window)
498 g_return_val_if_fail (GTK_IS_SCROLLED_WINDOW (scrolled_window), NULL);
500 return (scrolled_window->hscrollbar ?
501 gtk_range_get_adjustment (GTK_RANGE (scrolled_window->hscrollbar)) :
506 gtk_scrolled_window_get_vadjustment (GtkScrolledWindow *scrolled_window)
508 g_return_val_if_fail (GTK_IS_SCROLLED_WINDOW (scrolled_window), NULL);
510 return (scrolled_window->vscrollbar ?
511 gtk_range_get_adjustment (GTK_RANGE (scrolled_window->vscrollbar)) :
516 * gtk_scrolled_window_get_hscrollbar:
517 * @scrolled_window: a #GtkScrolledWindow
519 * Returns the horizontal scrollbar of @scrolled_window.
521 * Returns: the horizontal scrollbar of the scrolled window, or
522 * %NULL if it does not have one.
527 gtk_scrolled_window_get_hscrollbar (GtkScrolledWindow *scrolled_window)
529 g_return_val_if_fail (GTK_IS_SCROLLED_WINDOW (scrolled_window), NULL);
531 return scrolled_window->hscrollbar;
535 * gtk_scrolled_window_get_vscrollbar:
536 * @scrolled_window: a #GtkScrolledWindow
538 * Returns the vertical scrollbar of @scrolled_window.
540 * Returns: the vertical scrollbar of the scrolled window, or
541 * %NULL if it does not have one.
546 gtk_scrolled_window_get_vscrollbar (GtkScrolledWindow *scrolled_window)
548 g_return_val_if_fail (GTK_IS_SCROLLED_WINDOW (scrolled_window), NULL);
550 return scrolled_window->vscrollbar;
554 gtk_scrolled_window_set_policy (GtkScrolledWindow *scrolled_window,
555 GtkPolicyType hscrollbar_policy,
556 GtkPolicyType vscrollbar_policy)
558 GObject *object = G_OBJECT (scrolled_window);
560 g_return_if_fail (GTK_IS_SCROLLED_WINDOW (scrolled_window));
562 if ((scrolled_window->hscrollbar_policy != hscrollbar_policy) ||
563 (scrolled_window->vscrollbar_policy != vscrollbar_policy))
565 scrolled_window->hscrollbar_policy = hscrollbar_policy;
566 scrolled_window->vscrollbar_policy = vscrollbar_policy;
568 gtk_widget_queue_resize (GTK_WIDGET (scrolled_window));
570 g_object_freeze_notify (object);
571 g_object_notify (object, "hscrollbar-policy");
572 g_object_notify (object, "vscrollbar-policy");
573 g_object_thaw_notify (object);
578 * gtk_scrolled_window_get_policy:
579 * @scrolled_window: a #GtkScrolledWindow
580 * @hscrollbar_policy: location to store the policy for the horizontal scrollbar, or %NULL.
581 * @vscrollbar_policy: location to store the policy for the horizontal scrollbar, or %NULL.
583 * Retrieves the current policy values for the horizontal and vertical
584 * scrollbars. See gtk_scrolled_window_set_policy().
587 gtk_scrolled_window_get_policy (GtkScrolledWindow *scrolled_window,
588 GtkPolicyType *hscrollbar_policy,
589 GtkPolicyType *vscrollbar_policy)
591 g_return_if_fail (GTK_IS_SCROLLED_WINDOW (scrolled_window));
593 if (hscrollbar_policy)
594 *hscrollbar_policy = scrolled_window->hscrollbar_policy;
595 if (vscrollbar_policy)
596 *vscrollbar_policy = scrolled_window->vscrollbar_policy;
600 gtk_scrolled_window_update_real_placement (GtkScrolledWindow *scrolled_window)
602 GtkScrolledWindowPrivate *priv = GTK_SCROLLED_WINDOW_GET_PRIVATE (scrolled_window);
603 GtkSettings *settings;
605 settings = gtk_widget_get_settings (GTK_WIDGET (scrolled_window));
607 if (priv->window_placement_set || settings == NULL)
608 priv->real_window_placement = scrolled_window->window_placement;
610 g_object_get (settings,
611 "gtk-scrolled-window-placement",
612 &priv->real_window_placement,
617 gtk_scrolled_window_set_placement_internal (GtkScrolledWindow *scrolled_window,
618 GtkCornerType window_placement)
620 if (scrolled_window->window_placement != window_placement)
622 scrolled_window->window_placement = window_placement;
624 gtk_scrolled_window_update_real_placement (scrolled_window);
625 gtk_widget_queue_resize (GTK_WIDGET (scrolled_window));
627 g_object_notify (G_OBJECT (scrolled_window), "window-placement");
632 gtk_scrolled_window_set_placement_set (GtkScrolledWindow *scrolled_window,
633 gboolean placement_set,
634 gboolean emit_resize)
636 GtkScrolledWindowPrivate *priv = GTK_SCROLLED_WINDOW_GET_PRIVATE (scrolled_window);
638 if (priv->window_placement_set != placement_set)
640 priv->window_placement_set = placement_set;
642 gtk_scrolled_window_update_real_placement (scrolled_window);
644 gtk_widget_queue_resize (GTK_WIDGET (scrolled_window));
646 g_object_notify (G_OBJECT (scrolled_window), "window-placement-set");
651 * gtk_scrolled_window_set_placement:
652 * @scrolled_window: a #GtkScrolledWindow
654 * Sets the placement of the contents with respect to the scrollbars
655 * for the scrolled window.
657 * See also gtk_scrolled_window_get_placement() and
658 * gtk_scrolled_window_unset_placement().
661 gtk_scrolled_window_set_placement (GtkScrolledWindow *scrolled_window,
662 GtkCornerType window_placement)
664 g_return_if_fail (GTK_IS_SCROLLED_WINDOW (scrolled_window));
666 gtk_scrolled_window_set_placement_set (scrolled_window, TRUE, FALSE);
667 gtk_scrolled_window_set_placement_internal (scrolled_window, window_placement);
671 * gtk_scrolled_window_get_placement:
672 * @scrolled_window: a #GtkScrolledWindow
674 * Gets the placement of the contents with respect to the scrollbars
675 * for the scrolled window. See gtk_scrolled_window_set_placement().
677 * Return value: the current placement value.
679 * See also gtk_scrolled_window_set_placement() and
680 * gtk_scrolled_window_unset_placement().
683 gtk_scrolled_window_get_placement (GtkScrolledWindow *scrolled_window)
685 g_return_val_if_fail (GTK_IS_SCROLLED_WINDOW (scrolled_window), GTK_CORNER_TOP_LEFT);
687 return scrolled_window->window_placement;
691 * gtk_scrolled_window_unset_placement:
692 * @scrolled_window: a #GtkScrolledWindow
694 * Unsets the placement of the contents with respect to the scrollbars
695 * for the scrolled window. If no window placement is set for a scrolled
696 * window, it obeys the "gtk-scrolled-window-placement" XSETTING.
698 * See also gtk_scrolled_window_set_placement() and
699 * gtk_scrolled_window_get_placement().
704 gtk_scrolled_window_unset_placement (GtkScrolledWindow *scrolled_window)
706 GtkScrolledWindowPrivate *priv = GTK_SCROLLED_WINDOW_GET_PRIVATE (scrolled_window);
708 g_return_if_fail (GTK_IS_SCROLLED_WINDOW (scrolled_window));
710 if (priv->window_placement_set)
712 priv->window_placement_set = FALSE;
714 gtk_widget_queue_resize (GTK_WIDGET (scrolled_window));
716 g_object_notify (G_OBJECT (scrolled_window), "window-placement-set");
721 * gtk_scrolled_window_set_shadow_type:
722 * @scrolled_window: a #GtkScrolledWindow
723 * @type: kind of shadow to draw around scrolled window contents
725 * Changes the type of shadow drawn around the contents of
730 gtk_scrolled_window_set_shadow_type (GtkScrolledWindow *scrolled_window,
733 g_return_if_fail (GTK_IS_SCROLLED_WINDOW (scrolled_window));
734 g_return_if_fail (type >= GTK_SHADOW_NONE && type <= GTK_SHADOW_ETCHED_OUT);
736 if (scrolled_window->shadow_type != type)
738 scrolled_window->shadow_type = type;
740 if (GTK_WIDGET_DRAWABLE (scrolled_window))
741 gtk_widget_queue_draw (GTK_WIDGET (scrolled_window));
743 gtk_widget_queue_resize (GTK_WIDGET (scrolled_window));
745 g_object_notify (G_OBJECT (scrolled_window), "shadow-type");
750 * gtk_scrolled_window_get_shadow_type:
751 * @scrolled_window: a #GtkScrolledWindow
753 * Gets the shadow type of the scrolled window. See
754 * gtk_scrolled_window_set_shadow_type().
756 * Return value: the current shadow type
759 gtk_scrolled_window_get_shadow_type (GtkScrolledWindow *scrolled_window)
761 g_return_val_if_fail (GTK_IS_SCROLLED_WINDOW (scrolled_window), GTK_SHADOW_NONE);
763 return scrolled_window->shadow_type;
767 gtk_scrolled_window_destroy (GtkObject *object)
769 GtkScrolledWindow *scrolled_window;
771 g_return_if_fail (GTK_IS_SCROLLED_WINDOW (object));
773 scrolled_window = GTK_SCROLLED_WINDOW (object);
775 gtk_widget_unparent (scrolled_window->hscrollbar);
776 gtk_widget_unparent (scrolled_window->vscrollbar);
777 gtk_widget_destroy (scrolled_window->hscrollbar);
778 gtk_widget_destroy (scrolled_window->vscrollbar);
780 GTK_OBJECT_CLASS (gtk_scrolled_window_parent_class)->destroy (object);
784 gtk_scrolled_window_finalize (GObject *object)
786 GtkScrolledWindow *scrolled_window = GTK_SCROLLED_WINDOW (object);
788 g_object_unref (scrolled_window->hscrollbar);
789 g_object_unref (scrolled_window->vscrollbar);
791 G_OBJECT_CLASS (gtk_scrolled_window_parent_class)->finalize (object);
795 gtk_scrolled_window_set_property (GObject *object,
800 GtkScrolledWindow *scrolled_window = GTK_SCROLLED_WINDOW (object);
804 case PROP_HADJUSTMENT:
805 gtk_scrolled_window_set_hadjustment (scrolled_window,
806 g_value_get_object (value));
808 case PROP_VADJUSTMENT:
809 gtk_scrolled_window_set_vadjustment (scrolled_window,
810 g_value_get_object (value));
812 case PROP_HSCROLLBAR_POLICY:
813 gtk_scrolled_window_set_policy (scrolled_window,
814 g_value_get_enum (value),
815 scrolled_window->vscrollbar_policy);
817 case PROP_VSCROLLBAR_POLICY:
818 gtk_scrolled_window_set_policy (scrolled_window,
819 scrolled_window->hscrollbar_policy,
820 g_value_get_enum (value));
822 case PROP_WINDOW_PLACEMENT:
823 gtk_scrolled_window_set_placement_internal (scrolled_window,
824 g_value_get_enum (value));
826 case PROP_WINDOW_PLACEMENT_SET:
827 gtk_scrolled_window_set_placement_set (scrolled_window,
828 g_value_get_enum (value),
831 case PROP_SHADOW_TYPE:
832 gtk_scrolled_window_set_shadow_type (scrolled_window,
833 g_value_get_enum (value));
836 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
842 gtk_scrolled_window_get_property (GObject *object,
847 GtkScrolledWindow *scrolled_window = GTK_SCROLLED_WINDOW (object);
848 GtkScrolledWindowPrivate *priv = GTK_SCROLLED_WINDOW_GET_PRIVATE (scrolled_window);
852 case PROP_HADJUSTMENT:
853 g_value_set_object (value,
854 G_OBJECT (gtk_scrolled_window_get_hadjustment (scrolled_window)));
856 case PROP_VADJUSTMENT:
857 g_value_set_object (value,
858 G_OBJECT (gtk_scrolled_window_get_vadjustment (scrolled_window)));
860 case PROP_HSCROLLBAR_POLICY:
861 g_value_set_enum (value, scrolled_window->hscrollbar_policy);
863 case PROP_VSCROLLBAR_POLICY:
864 g_value_set_enum (value, scrolled_window->vscrollbar_policy);
866 case PROP_WINDOW_PLACEMENT:
867 g_value_set_enum (value, scrolled_window->window_placement);
869 case PROP_WINDOW_PLACEMENT_SET:
870 g_value_set_boolean (value, priv->window_placement_set);
872 case PROP_SHADOW_TYPE:
873 g_value_set_enum (value, scrolled_window->shadow_type);
876 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
882 traverse_container (GtkWidget *widget,
885 if (GTK_IS_SCROLLED_WINDOW (widget))
887 gtk_scrolled_window_update_real_placement (GTK_SCROLLED_WINDOW (widget));
888 gtk_widget_queue_draw (widget);
890 else if (GTK_IS_CONTAINER (widget))
891 gtk_container_forall (GTK_CONTAINER (widget), traverse_container, NULL);
895 gtk_scrolled_window_settings_changed (GtkSettings *settings)
899 list = gtk_window_list_toplevels ();
901 for (l = list; l; l = l->next)
902 gtk_container_forall (GTK_CONTAINER (l->data),
903 traverse_container, NULL);
909 gtk_scrolled_window_screen_changed (GtkWidget *widget,
910 GdkScreen *previous_screen)
912 GtkSettings *settings;
913 guint window_placement_connection;
915 gtk_scrolled_window_update_real_placement (GTK_SCROLLED_WINDOW (widget));
917 if (!gtk_widget_has_screen (widget))
920 settings = gtk_widget_get_settings (widget);
922 window_placement_connection =
923 GPOINTER_TO_UINT (g_object_get_data (G_OBJECT (settings),
924 "gtk-scrolled-window-connection"));
926 if (window_placement_connection)
929 window_placement_connection =
930 g_signal_connect (settings, "notify::gtk-scrolled-window-placement",
931 G_CALLBACK (gtk_scrolled_window_settings_changed), 0);
932 g_object_set_data (G_OBJECT (settings),
933 I_("gtk-scrolled-window-connection"),
934 GUINT_TO_POINTER (window_placement_connection));
938 gtk_scrolled_window_paint (GtkWidget *widget,
941 GtkAllocation relative_allocation;
942 GtkScrolledWindow *scrolled_window = GTK_SCROLLED_WINDOW (widget);
944 if (scrolled_window->shadow_type != GTK_SHADOW_NONE)
946 gtk_scrolled_window_relative_allocation (widget, &relative_allocation);
948 relative_allocation.x -= widget->style->xthickness;
949 relative_allocation.y -= widget->style->ythickness;
950 relative_allocation.width += 2 * widget->style->xthickness;
951 relative_allocation.height += 2 * widget->style->ythickness;
953 gtk_paint_shadow (widget->style, widget->window,
954 GTK_STATE_NORMAL, scrolled_window->shadow_type,
955 area, widget, "scrolled_window",
956 widget->allocation.x + relative_allocation.x,
957 widget->allocation.y + relative_allocation.y,
958 relative_allocation.width,
959 relative_allocation.height);
964 gtk_scrolled_window_expose (GtkWidget *widget,
965 GdkEventExpose *event)
967 if (GTK_WIDGET_DRAWABLE (widget))
969 gtk_scrolled_window_paint (widget, &event->area);
971 (* GTK_WIDGET_CLASS (gtk_scrolled_window_parent_class)->expose_event) (widget, event);
978 gtk_scrolled_window_forall (GtkContainer *container,
979 gboolean include_internals,
980 GtkCallback callback,
981 gpointer callback_data)
983 g_return_if_fail (GTK_IS_SCROLLED_WINDOW (container));
984 g_return_if_fail (callback != NULL);
986 GTK_CONTAINER_CLASS (gtk_scrolled_window_parent_class)->forall (container,
990 if (include_internals)
992 GtkScrolledWindow *scrolled_window;
994 scrolled_window = GTK_SCROLLED_WINDOW (container);
996 if (scrolled_window->vscrollbar)
997 callback (scrolled_window->vscrollbar, callback_data);
998 if (scrolled_window->hscrollbar)
999 callback (scrolled_window->hscrollbar, callback_data);
1004 gtk_scrolled_window_scroll_child (GtkScrolledWindow *scrolled_window,
1005 GtkScrollType scroll,
1006 gboolean horizontal)
1008 GtkAdjustment *adjustment = NULL;
1012 case GTK_SCROLL_STEP_UP:
1013 scroll = GTK_SCROLL_STEP_BACKWARD;
1016 case GTK_SCROLL_STEP_DOWN:
1017 scroll = GTK_SCROLL_STEP_FORWARD;
1020 case GTK_SCROLL_STEP_LEFT:
1021 scroll = GTK_SCROLL_STEP_BACKWARD;
1024 case GTK_SCROLL_STEP_RIGHT:
1025 scroll = GTK_SCROLL_STEP_FORWARD;
1028 case GTK_SCROLL_PAGE_UP:
1029 scroll = GTK_SCROLL_PAGE_BACKWARD;
1032 case GTK_SCROLL_PAGE_DOWN:
1033 scroll = GTK_SCROLL_PAGE_FORWARD;
1036 case GTK_SCROLL_PAGE_LEFT:
1037 scroll = GTK_SCROLL_STEP_BACKWARD;
1040 case GTK_SCROLL_PAGE_RIGHT:
1041 scroll = GTK_SCROLL_STEP_FORWARD;
1044 case GTK_SCROLL_STEP_BACKWARD:
1045 case GTK_SCROLL_STEP_FORWARD:
1046 case GTK_SCROLL_PAGE_BACKWARD:
1047 case GTK_SCROLL_PAGE_FORWARD:
1048 case GTK_SCROLL_START:
1049 case GTK_SCROLL_END:
1052 g_warning ("Invalid scroll type %d for GtkSpinButton::change-value", scroll);
1058 if (scrolled_window->hscrollbar)
1059 adjustment = gtk_range_get_adjustment (GTK_RANGE (scrolled_window->hscrollbar));
1063 if (scrolled_window->vscrollbar)
1064 adjustment = gtk_range_get_adjustment (GTK_RANGE (scrolled_window->vscrollbar));
1069 gdouble value = adjustment->value;
1073 case GTK_SCROLL_STEP_FORWARD:
1074 value += adjustment->step_increment;
1076 case GTK_SCROLL_STEP_BACKWARD:
1077 value -= adjustment->step_increment;
1079 case GTK_SCROLL_PAGE_FORWARD:
1080 value += adjustment->page_increment;
1082 case GTK_SCROLL_PAGE_BACKWARD:
1083 value -= adjustment->page_increment;
1085 case GTK_SCROLL_START:
1086 value = adjustment->lower;
1088 case GTK_SCROLL_END:
1089 value = adjustment->upper;
1092 g_assert_not_reached ();
1096 value = CLAMP (value, adjustment->lower, adjustment->upper - adjustment->page_size);
1098 gtk_adjustment_set_value (adjustment, value);
1103 gtk_scrolled_window_move_focus_out (GtkScrolledWindow *scrolled_window,
1104 GtkDirectionType direction_type)
1106 GtkWidget *toplevel;
1108 /* Focus out of the scrolled window entirely. We do this by setting
1109 * a flag, then propagating the focus motion to the notebook.
1111 toplevel = gtk_widget_get_toplevel (GTK_WIDGET (scrolled_window));
1112 if (!GTK_WIDGET_TOPLEVEL (toplevel))
1115 g_object_ref (scrolled_window);
1117 scrolled_window->focus_out = TRUE;
1118 g_signal_emit_by_name (toplevel, "move_focus", direction_type);
1119 scrolled_window->focus_out = FALSE;
1121 g_object_unref (scrolled_window);
1125 gtk_scrolled_window_size_request (GtkWidget *widget,
1126 GtkRequisition *requisition)
1128 GtkScrolledWindow *scrolled_window;
1132 gint scrollbar_spacing;
1133 GtkRequisition hscrollbar_requisition;
1134 GtkRequisition vscrollbar_requisition;
1135 GtkRequisition child_requisition;
1137 g_return_if_fail (GTK_IS_SCROLLED_WINDOW (widget));
1138 g_return_if_fail (requisition != NULL);
1140 scrolled_window = GTK_SCROLLED_WINDOW (widget);
1141 bin = GTK_BIN (scrolled_window);
1143 scrollbar_spacing = _gtk_scrolled_window_get_scrollbar_spacing (scrolled_window);
1147 requisition->width = 0;
1148 requisition->height = 0;
1150 gtk_widget_size_request (scrolled_window->hscrollbar,
1151 &hscrollbar_requisition);
1152 gtk_widget_size_request (scrolled_window->vscrollbar,
1153 &vscrollbar_requisition);
1155 if (bin->child && GTK_WIDGET_VISIBLE (bin->child))
1157 gtk_widget_size_request (bin->child, &child_requisition);
1159 if (scrolled_window->hscrollbar_policy == GTK_POLICY_NEVER)
1160 requisition->width += child_requisition.width;
1163 GtkWidgetAuxInfo *aux_info = _gtk_widget_get_aux_info (bin->child, FALSE);
1165 if (aux_info && aux_info->width > 0)
1167 requisition->width += aux_info->width;
1171 requisition->width += vscrollbar_requisition.width;
1174 if (scrolled_window->vscrollbar_policy == GTK_POLICY_NEVER)
1175 requisition->height += child_requisition.height;
1178 GtkWidgetAuxInfo *aux_info = _gtk_widget_get_aux_info (bin->child, FALSE);
1180 if (aux_info && aux_info->height > 0)
1182 requisition->height += aux_info->height;
1186 requisition->height += hscrollbar_requisition.height;
1190 if (scrolled_window->hscrollbar_policy == GTK_POLICY_AUTOMATIC ||
1191 scrolled_window->hscrollbar_policy == GTK_POLICY_ALWAYS)
1193 requisition->width = MAX (requisition->width, hscrollbar_requisition.width);
1194 if (!extra_height || scrolled_window->hscrollbar_policy == GTK_POLICY_ALWAYS)
1195 extra_height = scrollbar_spacing + hscrollbar_requisition.height;
1198 if (scrolled_window->vscrollbar_policy == GTK_POLICY_AUTOMATIC ||
1199 scrolled_window->vscrollbar_policy == GTK_POLICY_ALWAYS)
1201 requisition->height = MAX (requisition->height, vscrollbar_requisition.height);
1202 if (!extra_height || scrolled_window->vscrollbar_policy == GTK_POLICY_ALWAYS)
1203 extra_width = scrollbar_spacing + vscrollbar_requisition.width;
1206 requisition->width += GTK_CONTAINER (widget)->border_width * 2 + MAX (0, extra_width);
1207 requisition->height += GTK_CONTAINER (widget)->border_width * 2 + MAX (0, extra_height);
1209 if (scrolled_window->shadow_type != GTK_SHADOW_NONE)
1211 requisition->width += 2 * widget->style->xthickness;
1212 requisition->height += 2 * widget->style->ythickness;
1217 gtk_scrolled_window_relative_allocation (GtkWidget *widget,
1218 GtkAllocation *allocation)
1220 GtkScrolledWindow *scrolled_window;
1221 GtkScrolledWindowPrivate *priv;
1222 gint scrollbar_spacing;
1224 g_return_if_fail (widget != NULL);
1225 g_return_if_fail (allocation != NULL);
1227 scrolled_window = GTK_SCROLLED_WINDOW (widget);
1228 scrollbar_spacing = _gtk_scrolled_window_get_scrollbar_spacing (scrolled_window);
1230 priv = GTK_SCROLLED_WINDOW_GET_PRIVATE (scrolled_window);
1232 allocation->x = GTK_CONTAINER (widget)->border_width;
1233 allocation->y = GTK_CONTAINER (widget)->border_width;
1235 if (scrolled_window->shadow_type != GTK_SHADOW_NONE)
1237 allocation->x += widget->style->xthickness;
1238 allocation->y += widget->style->ythickness;
1241 allocation->width = MAX (1, (gint)widget->allocation.width - allocation->x * 2);
1242 allocation->height = MAX (1, (gint)widget->allocation.height - allocation->y * 2);
1244 if (scrolled_window->vscrollbar_visible)
1246 GtkRequisition vscrollbar_requisition;
1249 gtk_widget_get_child_requisition (scrolled_window->vscrollbar,
1250 &vscrollbar_requisition);
1251 is_rtl = gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL;
1254 (priv->real_window_placement == GTK_CORNER_TOP_RIGHT ||
1255 priv->real_window_placement == GTK_CORNER_BOTTOM_RIGHT)) ||
1257 (priv->real_window_placement == GTK_CORNER_TOP_LEFT ||
1258 priv->real_window_placement == GTK_CORNER_BOTTOM_LEFT)))
1259 allocation->x += (vscrollbar_requisition.width + scrollbar_spacing);
1261 allocation->width = MAX (1, allocation->width - (vscrollbar_requisition.width + scrollbar_spacing));
1263 if (scrolled_window->hscrollbar_visible)
1265 GtkRequisition hscrollbar_requisition;
1266 gtk_widget_get_child_requisition (scrolled_window->hscrollbar,
1267 &hscrollbar_requisition);
1269 if (priv->real_window_placement == GTK_CORNER_BOTTOM_LEFT ||
1270 priv->real_window_placement == GTK_CORNER_BOTTOM_RIGHT)
1271 allocation->y += (hscrollbar_requisition.height + scrollbar_spacing);
1273 allocation->height = MAX (1, allocation->height - (hscrollbar_requisition.height + scrollbar_spacing));
1278 gtk_scrolled_window_size_allocate (GtkWidget *widget,
1279 GtkAllocation *allocation)
1281 GtkScrolledWindow *scrolled_window;
1282 GtkScrolledWindowPrivate *priv;
1284 GtkAllocation relative_allocation;
1285 GtkAllocation child_allocation;
1286 gint scrollbar_spacing;
1288 g_return_if_fail (GTK_IS_SCROLLED_WINDOW (widget));
1289 g_return_if_fail (allocation != NULL);
1291 scrolled_window = GTK_SCROLLED_WINDOW (widget);
1292 bin = GTK_BIN (scrolled_window);
1294 scrollbar_spacing = _gtk_scrolled_window_get_scrollbar_spacing (scrolled_window);
1296 priv = GTK_SCROLLED_WINDOW_GET_PRIVATE (scrolled_window);
1298 widget->allocation = *allocation;
1300 if (scrolled_window->hscrollbar_policy == GTK_POLICY_ALWAYS)
1301 scrolled_window->hscrollbar_visible = TRUE;
1302 else if (scrolled_window->hscrollbar_policy == GTK_POLICY_NEVER)
1303 scrolled_window->hscrollbar_visible = FALSE;
1304 if (scrolled_window->vscrollbar_policy == GTK_POLICY_ALWAYS)
1305 scrolled_window->vscrollbar_visible = TRUE;
1306 else if (scrolled_window->vscrollbar_policy == GTK_POLICY_NEVER)
1307 scrolled_window->vscrollbar_visible = FALSE;
1309 if (bin->child && GTK_WIDGET_VISIBLE (bin->child))
1311 gboolean previous_hvis;
1312 gboolean previous_vvis;
1317 gtk_scrolled_window_relative_allocation (widget, &relative_allocation);
1319 child_allocation.x = relative_allocation.x + allocation->x;
1320 child_allocation.y = relative_allocation.y + allocation->y;
1321 child_allocation.width = relative_allocation.width;
1322 child_allocation.height = relative_allocation.height;
1324 previous_hvis = scrolled_window->hscrollbar_visible;
1325 previous_vvis = scrolled_window->vscrollbar_visible;
1327 gtk_widget_size_allocate (bin->child, &child_allocation);
1329 /* If, after the first iteration, the hscrollbar and the
1330 * vscrollbar flip visiblity, then we need both.
1333 previous_hvis != scrolled_window->hscrollbar_visible &&
1334 previous_vvis != scrolled_window->vscrollbar_visible)
1336 scrolled_window->hscrollbar_visible = TRUE;
1337 scrolled_window->vscrollbar_visible = TRUE;
1339 /* a new resize is already queued at this point,
1340 * so we will immediatedly get reinvoked
1347 while (previous_hvis != scrolled_window->hscrollbar_visible ||
1348 previous_vvis != scrolled_window->vscrollbar_visible);
1351 gtk_scrolled_window_relative_allocation (widget, &relative_allocation);
1353 if (scrolled_window->hscrollbar_visible)
1355 GtkRequisition hscrollbar_requisition;
1356 gtk_widget_get_child_requisition (scrolled_window->hscrollbar,
1357 &hscrollbar_requisition);
1359 if (!GTK_WIDGET_VISIBLE (scrolled_window->hscrollbar))
1360 gtk_widget_show (scrolled_window->hscrollbar);
1362 child_allocation.x = relative_allocation.x;
1363 if (priv->real_window_placement == GTK_CORNER_TOP_LEFT ||
1364 priv->real_window_placement == GTK_CORNER_TOP_RIGHT)
1365 child_allocation.y = (relative_allocation.y +
1366 relative_allocation.height +
1368 (scrolled_window->shadow_type == GTK_SHADOW_NONE ?
1369 0 : widget->style->ythickness));
1371 child_allocation.y = GTK_CONTAINER (scrolled_window)->border_width;
1373 child_allocation.width = relative_allocation.width;
1374 child_allocation.height = hscrollbar_requisition.height;
1375 child_allocation.x += allocation->x;
1376 child_allocation.y += allocation->y;
1378 if (scrolled_window->shadow_type != GTK_SHADOW_NONE)
1380 child_allocation.x -= widget->style->xthickness;
1381 child_allocation.width += 2 * widget->style->xthickness;
1384 gtk_widget_size_allocate (scrolled_window->hscrollbar, &child_allocation);
1386 else if (GTK_WIDGET_VISIBLE (scrolled_window->hscrollbar))
1387 gtk_widget_hide (scrolled_window->hscrollbar);
1389 if (scrolled_window->vscrollbar_visible)
1391 GtkRequisition vscrollbar_requisition;
1392 if (!GTK_WIDGET_VISIBLE (scrolled_window->vscrollbar))
1393 gtk_widget_show (scrolled_window->vscrollbar);
1395 gtk_widget_get_child_requisition (scrolled_window->vscrollbar,
1396 &vscrollbar_requisition);
1398 if ((gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL &&
1399 (priv->real_window_placement == GTK_CORNER_TOP_RIGHT ||
1400 priv->real_window_placement == GTK_CORNER_BOTTOM_RIGHT)) ||
1401 (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_LTR &&
1402 (priv->real_window_placement == GTK_CORNER_TOP_LEFT ||
1403 priv->real_window_placement == GTK_CORNER_BOTTOM_LEFT)))
1404 child_allocation.x = (relative_allocation.x +
1405 relative_allocation.width +
1407 (scrolled_window->shadow_type == GTK_SHADOW_NONE ?
1408 0 : widget->style->xthickness));
1410 child_allocation.x = GTK_CONTAINER (scrolled_window)->border_width;
1412 child_allocation.y = relative_allocation.y;
1413 child_allocation.width = vscrollbar_requisition.width;
1414 child_allocation.height = relative_allocation.height;
1415 child_allocation.x += allocation->x;
1416 child_allocation.y += allocation->y;
1418 if (scrolled_window->shadow_type != GTK_SHADOW_NONE)
1420 child_allocation.y -= widget->style->ythickness;
1421 child_allocation.height += 2 * widget->style->ythickness;
1424 gtk_widget_size_allocate (scrolled_window->vscrollbar, &child_allocation);
1426 else if (GTK_WIDGET_VISIBLE (scrolled_window->vscrollbar))
1427 gtk_widget_hide (scrolled_window->vscrollbar);
1431 gtk_scrolled_window_scroll_event (GtkWidget *widget,
1432 GdkEventScroll *event)
1436 g_return_val_if_fail (GTK_IS_SCROLLED_WINDOW (widget), FALSE);
1437 g_return_val_if_fail (event != NULL, FALSE);
1439 if (event->direction == GDK_SCROLL_UP || event->direction == GDK_SCROLL_DOWN)
1440 range = GTK_SCROLLED_WINDOW (widget)->vscrollbar;
1442 range = GTK_SCROLLED_WINDOW (widget)->hscrollbar;
1444 if (range && GTK_WIDGET_VISIBLE (range))
1446 GtkAdjustment *adj = GTK_RANGE (range)->adjustment;
1447 gdouble delta, new_value;
1449 delta = _gtk_range_get_wheel_delta (GTK_RANGE (range), event->direction);
1451 new_value = CLAMP (adj->value + delta, adj->lower, adj->upper - adj->page_size);
1453 gtk_adjustment_set_value (adj, new_value);
1462 gtk_scrolled_window_focus (GtkWidget *widget,
1463 GtkDirectionType direction)
1465 GtkScrolledWindow *scrolled_window = GTK_SCROLLED_WINDOW (widget);
1466 gboolean had_focus_child = GTK_CONTAINER (widget)->focus_child != NULL;
1468 if (scrolled_window->focus_out)
1470 scrolled_window->focus_out = FALSE; /* Clear this to catch the wrap-around case */
1474 if (gtk_widget_is_focus (widget))
1477 /* We only put the scrolled window itself in the focus chain if it
1478 * isn't possible to focus any children.
1480 if (GTK_BIN (widget)->child)
1482 if (gtk_widget_child_focus (GTK_BIN (widget)->child, direction))
1486 if (!had_focus_child)
1488 gtk_widget_grab_focus (widget);
1496 gtk_scrolled_window_adjustment_changed (GtkAdjustment *adjustment,
1499 GtkScrolledWindow *scrolled_win;
1501 g_return_if_fail (adjustment != NULL);
1502 g_return_if_fail (data != NULL);
1504 scrolled_win = GTK_SCROLLED_WINDOW (data);
1506 if (scrolled_win->hscrollbar &&
1507 adjustment == gtk_range_get_adjustment (GTK_RANGE (scrolled_win->hscrollbar)))
1509 if (scrolled_win->hscrollbar_policy == GTK_POLICY_AUTOMATIC)
1513 visible = scrolled_win->hscrollbar_visible;
1514 scrolled_win->hscrollbar_visible = (adjustment->upper - adjustment->lower >
1515 adjustment->page_size);
1516 if (scrolled_win->hscrollbar_visible != visible)
1517 gtk_widget_queue_resize (GTK_WIDGET (scrolled_win));
1520 else if (scrolled_win->vscrollbar &&
1521 adjustment == gtk_range_get_adjustment (GTK_RANGE (scrolled_win->vscrollbar)))
1523 if (scrolled_win->vscrollbar_policy == GTK_POLICY_AUTOMATIC)
1527 visible = scrolled_win->vscrollbar_visible;
1528 scrolled_win->vscrollbar_visible = (adjustment->upper - adjustment->lower >
1529 adjustment->page_size);
1530 if (scrolled_win->vscrollbar_visible != visible)
1531 gtk_widget_queue_resize (GTK_WIDGET (scrolled_win));
1537 gtk_scrolled_window_add (GtkContainer *container,
1540 GtkScrolledWindow *scrolled_window;
1543 bin = GTK_BIN (container);
1544 g_return_if_fail (bin->child == NULL);
1546 scrolled_window = GTK_SCROLLED_WINDOW (container);
1549 gtk_widget_set_parent (child, GTK_WIDGET (bin));
1551 /* this is a temporary message */
1552 if (!gtk_widget_set_scroll_adjustments (child,
1553 gtk_range_get_adjustment (GTK_RANGE (scrolled_window->hscrollbar)),
1554 gtk_range_get_adjustment (GTK_RANGE (scrolled_window->vscrollbar))))
1555 g_warning ("gtk_scrolled_window_add(): cannot add non scrollable widget "
1556 "use gtk_scrolled_window_add_with_viewport() instead");
1560 gtk_scrolled_window_remove (GtkContainer *container,
1563 g_return_if_fail (GTK_IS_SCROLLED_WINDOW (container));
1564 g_return_if_fail (child != NULL);
1565 g_return_if_fail (GTK_BIN (container)->child == child);
1567 gtk_widget_set_scroll_adjustments (child, NULL, NULL);
1569 /* chain parent class handler to remove child */
1570 GTK_CONTAINER_CLASS (gtk_scrolled_window_parent_class)->remove (container, child);
1574 gtk_scrolled_window_add_with_viewport (GtkScrolledWindow *scrolled_window,
1578 GtkWidget *viewport;
1580 g_return_if_fail (GTK_IS_SCROLLED_WINDOW (scrolled_window));
1581 g_return_if_fail (GTK_IS_WIDGET (child));
1582 g_return_if_fail (child->parent == NULL);
1584 bin = GTK_BIN (scrolled_window);
1586 if (bin->child != NULL)
1588 g_return_if_fail (GTK_IS_VIEWPORT (bin->child));
1589 g_return_if_fail (GTK_BIN (bin->child)->child == NULL);
1591 viewport = bin->child;
1596 gtk_viewport_new (gtk_scrolled_window_get_hadjustment (scrolled_window),
1597 gtk_scrolled_window_get_vadjustment (scrolled_window));
1598 gtk_container_add (GTK_CONTAINER (scrolled_window), viewport);
1601 gtk_widget_show (viewport);
1602 gtk_container_add (GTK_CONTAINER (viewport), child);
1606 * _gtk_scrolled_window_get_spacing:
1607 * @scrolled_window: a scrolled window
1609 * Gets the spacing between the scrolled window's scrollbars and
1610 * the scrolled widget. Used by GtkCombo
1612 * Return value: the spacing, in pixels.
1615 _gtk_scrolled_window_get_scrollbar_spacing (GtkScrolledWindow *scrolled_window)
1617 GtkScrolledWindowClass *class;
1619 g_return_val_if_fail (GTK_IS_SCROLLED_WINDOW (scrolled_window), 0);
1621 class = GTK_SCROLLED_WINDOW_GET_CLASS (scrolled_window);
1623 if (class->scrollbar_spacing >= 0)
1624 return class->scrollbar_spacing;
1627 gint scrollbar_spacing;
1629 gtk_widget_style_get (GTK_WIDGET (scrolled_window),
1630 "scrollbar-spacing", &scrollbar_spacing,
1633 return scrollbar_spacing;
1637 #define __GTK_SCROLLED_WINDOW_C__
1638 #include "gtkaliasdef.c"