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, see <http://www.gnu.org/licenses/>.
19 * Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
20 * file for a list of people on the GTK+ Team. See the ChangeLog
21 * files for a list of changes. These files are distributed with
22 * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
25 #if !defined (__GTK_H_INSIDE__) && !defined (GTK_COMPILATION)
26 #error "Only <gtk/gtk.h> can be included directly."
29 #ifndef __GTK_WIDGET_H__
30 #define __GTK_WIDGET_H__
33 #include <gtk/gtkaccelgroup.h>
34 #include <gtk/gtkadjustment.h>
35 #include <gtk/gtkborder.h>
36 #include <gtk/gtksettings.h>
37 #include <gtk/gtkstylecontext.h>
38 #include <gtk/gtkwidgetpath.h>
43 /* Kinds of widget-specific help */
46 GTK_WIDGET_HELP_TOOLTIP,
47 GTK_WIDGET_HELP_WHATS_THIS
50 /* Macro for casting a pointer to a GtkWidget or GtkWidgetClass pointer.
51 * Macros for testing whether `widget' or `klass' are of type GTK_TYPE_WIDGET.
53 #define GTK_TYPE_WIDGET (gtk_widget_get_type ())
54 #define GTK_WIDGET(widget) (G_TYPE_CHECK_INSTANCE_CAST ((widget), GTK_TYPE_WIDGET, GtkWidget))
55 #define GTK_WIDGET_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_WIDGET, GtkWidgetClass))
56 #define GTK_IS_WIDGET(widget) (G_TYPE_CHECK_INSTANCE_TYPE ((widget), GTK_TYPE_WIDGET))
57 #define GTK_IS_WIDGET_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_WIDGET))
58 #define GTK_WIDGET_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_WIDGET, GtkWidgetClass))
60 #define GTK_TYPE_REQUISITION (gtk_requisition_get_type ())
62 /* forward declaration to avoid excessive includes (and concurrent includes)
64 typedef struct _GtkRequisition GtkRequisition;
65 typedef struct _GtkSelectionData GtkSelectionData;
66 typedef struct _GtkWidgetPrivate GtkWidgetPrivate;
67 typedef struct _GtkWidgetClass GtkWidgetClass;
68 typedef struct _GtkWidgetClassPrivate GtkWidgetClassPrivate;
69 typedef struct _GtkWidgetAuxInfo GtkWidgetAuxInfo;
70 typedef struct _GtkClipboard GtkClipboard;
71 typedef struct _GtkTooltip GtkTooltip;
72 typedef struct _GtkWindow GtkWindow;
76 * @x: the X position of the widget's area relative to its parents allocation.
77 * @y: the Y position of the widget's area relative to its parents allocation.
78 * @width: the width of the widget's allocated area.
79 * @height: the height of the widget's allocated area.
81 * A <structname>GtkAllocation</structname> of a widget represents region
82 * which has been allocated to the widget by its parent. It is a subregion
83 * of its parents allocation. See <xref linkend="geometry-management"/> for
86 typedef GdkRectangle GtkAllocation;
90 * @widget: the widget to operate on
91 * @data: user-supplied data
93 * The type of the callback functions used for e.g. iterating over
94 * the children of a container, see gtk_container_foreach().
96 typedef void (*GtkCallback) (GtkWidget *widget,
101 * @width: the widget's desired width
102 * @height: the widget's desired height
104 * A <structname>GtkRequisition</structname> represents the desired size of a widget. See
105 * <xref linkend="geometry-management"/> for more information.
107 struct _GtkRequisition
113 /* The widget is the base of the tree for displayable objects.
114 * (A displayable object is one which takes up some amount
115 * of screen real estate). It provides a common base and interface
116 * which actual widgets must adhere to.
120 GInitiallyUnowned parent_instance;
122 GtkWidgetPrivate *priv;
127 * @parent_class: The object class structure needs to be the first
128 * element in the widget class structure in order for the class mechanism
129 * to work correctly. This allows a GtkWidgetClass pointer to be cast to
130 * a GObjectClass pointer.
131 * @activate_signal: The signal to emit when a widget of this class is
132 * activated, gtk_widget_activate() handles the emission.
133 * Implementation of this signal is optional.
134 * @get_request_mode: This allows a widget to tell its parent container whether
135 * it prefers to be allocated in %GTK_SIZE_REQUEST_HEIGHT_FOR_WIDTH or
136 * %GTK_SIZE_REQUEST_WIDTH_FOR_HEIGHT mode.
137 * %GTK_SIZE_REQUEST_HEIGHT_FOR_WIDTH means the widget prefers to have
138 * #GtkWidgetClass.get_preferred_width() called and then
139 * #GtkWidgetClass.get_preferred_height_for_width().
140 * %GTK_SIZE_REQUEST_CONSTANT_SIZE disables any height-for-width or
141 * width-for-height geometry management for a said widget and is the
143 * It's important to note (as described below) that any widget
144 * which trades height-for-width or width-for-height must respond properly
145 * to both of the virtual methods #GtkWidgetClass.get_preferred_height_for_width()
146 * and #GtkWidgetClass.get_preferred_width_for_height() since it might be
147 * queried in either #GtkSizeRequestMode by its parent container.
148 * @get_preferred_height: This is called by containers to obtain the minimum
149 * and natural height of a widget. A widget that does not actually trade
150 * any height for width or width for height only has to implement these
151 * two virtual methods (#GtkWidgetClass.get_preferred_width() and
152 * #GtkWidgetClass.get_preferred_height()).
153 * @get_preferred_width_for_height: This is analogous to
154 * #GtkWidgetClass.get_preferred_height_for_width() except that it
155 * operates in the oposite orientation. It's rare that a widget actually
156 * does %GTK_SIZE_REQUEST_WIDTH_FOR_HEIGHT requests but this can happen
157 * when, for example, a widget or container gets additional columns to
158 * compensate for a smaller allocated height.
159 * @get_preferred_width: This is called by containers to obtain the minimum
160 * and natural width of a widget. A widget will never be allocated a width
161 * less than its minimum and will only ever be allocated a width greater
162 * than the natural width once all of the said widget's siblings have
163 * received their natural widths.
164 * Furthermore, a widget will only ever be allocated a width greater than
165 * its natural width if it was configured to receive extra expand space
166 * from its parent container.
167 * @get_preferred_height_for_width: This is similar to
168 * #GtkWidgetClass.get_preferred_height() except that it is passed a
169 * contextual width to request height for. By implementing this virtual
170 * method it is possible for a #GtkLabel to tell its parent how much height
171 * would be required if the label were to be allocated a said width.
172 * @adjust_size_request: Convert an initial size request from a widget's
173 * #GtkSizeRequest virtual method implementations into a size request to
174 * be used by parent containers in laying out the widget.
175 * adjust_size_request adjusts <emphasis>from</emphasis> a child widget's
176 * original request <emphasis>to</emphasis> what a parent container should
177 * use for layout. The @for_size argument will be -1 if the request should
178 * not be for a particular size in the opposing orientation, i.e. if the
179 * request is not height-for-width or width-for-height. If @for_size is
180 * greater than -1, it is the proposed allocation in the opposing
181 * orientation that we need the request for. Implementations of
182 * adjust_size_request should chain up to the default implementation,
183 * which applies #GtkWidget's margin properties and imposes any values
184 * from gtk_widget_set_size_request(). Chaining up should be last,
185 * <emphasis>after</emphasis> your subclass adjusts the request, so
186 * #GtkWidget can apply constraints and add the margin properly.
187 * @adjust_size_allocation: Convert an initial size allocation assigned
188 * by a #GtkContainer using gtk_widget_size_allocate(), into an actual
189 * size allocation to be used by the widget. adjust_size_allocation
190 * adjusts <emphasis>to</emphasis> a child widget's actual allocation
191 * <emphasis>from</emphasis> what a parent container computed for the
192 * child. The adjusted allocation must be entirely within the original
193 * allocation. In any custom implementation, chain up to the default
194 * #GtkWidget implementation of this method, which applies the margin
195 * and alignment properties of #GtkWidget. Chain up
196 * <emphasis>before</emphasis> performing your own adjustments so your
197 * own adjustments remove more allocation after the #GtkWidget base
198 * class has already removed margin and alignment. The natural size
199 * passed in should be adjusted in the same way as the allocated size,
200 * which allows adjustments to perform alignments or other changes
201 * based on natural size.
203 struct _GtkWidgetClass
205 GInitiallyUnownedClass parent_class;
209 guint activate_signal;
211 /* seldomly overidden */
212 void (*dispatch_child_properties_changed) (GtkWidget *widget,
214 GParamSpec **pspecs);
217 void (* destroy) (GtkWidget *widget);
218 void (* show) (GtkWidget *widget);
219 void (* show_all) (GtkWidget *widget);
220 void (* hide) (GtkWidget *widget);
221 void (* map) (GtkWidget *widget);
222 void (* unmap) (GtkWidget *widget);
223 void (* realize) (GtkWidget *widget);
224 void (* unrealize) (GtkWidget *widget);
225 void (* size_allocate) (GtkWidget *widget,
226 GtkAllocation *allocation);
227 void (* state_changed) (GtkWidget *widget,
228 GtkStateType previous_state);
229 void (* state_flags_changed) (GtkWidget *widget,
230 GtkStateFlags previous_state_flags);
231 void (* parent_set) (GtkWidget *widget,
232 GtkWidget *previous_parent);
233 void (* hierarchy_changed) (GtkWidget *widget,
234 GtkWidget *previous_toplevel);
235 void (* style_set) (GtkWidget *widget,
236 GtkStyle *previous_style);
237 void (* direction_changed) (GtkWidget *widget,
238 GtkTextDirection previous_direction);
239 void (* grab_notify) (GtkWidget *widget,
240 gboolean was_grabbed);
241 void (* child_notify) (GtkWidget *widget,
243 gboolean (* draw) (GtkWidget *widget,
247 GtkSizeRequestMode (* get_request_mode) (GtkWidget *widget);
249 void (* get_preferred_height) (GtkWidget *widget,
250 gint *minimum_height,
251 gint *natural_height);
252 void (* get_preferred_width_for_height) (GtkWidget *widget,
255 gint *natural_width);
256 void (* get_preferred_width) (GtkWidget *widget,
258 gint *natural_width);
259 void (* get_preferred_height_for_width) (GtkWidget *widget,
261 gint *minimum_height,
262 gint *natural_height);
265 gboolean (* mnemonic_activate) (GtkWidget *widget,
266 gboolean group_cycling);
269 void (* grab_focus) (GtkWidget *widget);
270 gboolean (* focus) (GtkWidget *widget,
271 GtkDirectionType direction);
273 /* keyboard navigation */
274 void (* move_focus) (GtkWidget *widget,
275 GtkDirectionType direction);
276 gboolean (* keynav_failed) (GtkWidget *widget,
277 GtkDirectionType direction);
280 gboolean (* event) (GtkWidget *widget,
282 gboolean (* button_press_event) (GtkWidget *widget,
283 GdkEventButton *event);
284 gboolean (* button_release_event) (GtkWidget *widget,
285 GdkEventButton *event);
286 gboolean (* scroll_event) (GtkWidget *widget,
287 GdkEventScroll *event);
288 gboolean (* motion_notify_event) (GtkWidget *widget,
289 GdkEventMotion *event);
290 gboolean (* delete_event) (GtkWidget *widget,
292 gboolean (* destroy_event) (GtkWidget *widget,
294 gboolean (* key_press_event) (GtkWidget *widget,
296 gboolean (* key_release_event) (GtkWidget *widget,
298 gboolean (* enter_notify_event) (GtkWidget *widget,
299 GdkEventCrossing *event);
300 gboolean (* leave_notify_event) (GtkWidget *widget,
301 GdkEventCrossing *event);
302 gboolean (* configure_event) (GtkWidget *widget,
303 GdkEventConfigure *event);
304 gboolean (* focus_in_event) (GtkWidget *widget,
305 GdkEventFocus *event);
306 gboolean (* focus_out_event) (GtkWidget *widget,
307 GdkEventFocus *event);
308 gboolean (* map_event) (GtkWidget *widget,
310 gboolean (* unmap_event) (GtkWidget *widget,
312 gboolean (* property_notify_event) (GtkWidget *widget,
313 GdkEventProperty *event);
314 gboolean (* selection_clear_event) (GtkWidget *widget,
315 GdkEventSelection *event);
316 gboolean (* selection_request_event) (GtkWidget *widget,
317 GdkEventSelection *event);
318 gboolean (* selection_notify_event) (GtkWidget *widget,
319 GdkEventSelection *event);
320 gboolean (* proximity_in_event) (GtkWidget *widget,
321 GdkEventProximity *event);
322 gboolean (* proximity_out_event) (GtkWidget *widget,
323 GdkEventProximity *event);
324 gboolean (* visibility_notify_event) (GtkWidget *widget,
325 GdkEventVisibility *event);
326 gboolean (* window_state_event) (GtkWidget *widget,
327 GdkEventWindowState *event);
328 gboolean (* damage_event) (GtkWidget *widget,
329 GdkEventExpose *event);
330 gboolean (* grab_broken_event) (GtkWidget *widget,
331 GdkEventGrabBroken *event);
334 void (* selection_get) (GtkWidget *widget,
335 GtkSelectionData *selection_data,
338 void (* selection_received) (GtkWidget *widget,
339 GtkSelectionData *selection_data,
342 /* Source side drag signals */
343 void (* drag_begin) (GtkWidget *widget,
344 GdkDragContext *context);
345 void (* drag_end) (GtkWidget *widget,
346 GdkDragContext *context);
347 void (* drag_data_get) (GtkWidget *widget,
348 GdkDragContext *context,
349 GtkSelectionData *selection_data,
352 void (* drag_data_delete) (GtkWidget *widget,
353 GdkDragContext *context);
355 /* Target side drag signals */
356 void (* drag_leave) (GtkWidget *widget,
357 GdkDragContext *context,
359 gboolean (* drag_motion) (GtkWidget *widget,
360 GdkDragContext *context,
364 gboolean (* drag_drop) (GtkWidget *widget,
365 GdkDragContext *context,
369 void (* drag_data_received) (GtkWidget *widget,
370 GdkDragContext *context,
373 GtkSelectionData *selection_data,
376 gboolean (* drag_failed) (GtkWidget *widget,
377 GdkDragContext *context,
378 GtkDragResult result);
380 /* Signals used only for keybindings */
381 gboolean (* popup_menu) (GtkWidget *widget);
383 /* If a widget has multiple tooltips/whatsthis, it should show the
384 * one for the current focus location, or if that doesn't make
385 * sense, should cycle through them showing each tip alongside
386 * whatever piece of the widget it applies to.
388 gboolean (* show_help) (GtkWidget *widget,
389 GtkWidgetHelpType help_type);
391 /* accessibility support
393 AtkObject * (* get_accessible) (GtkWidget *widget);
395 void (* screen_changed) (GtkWidget *widget,
396 GdkScreen *previous_screen);
397 gboolean (* can_activate_accel) (GtkWidget *widget,
401 void (* composited_changed) (GtkWidget *widget);
403 gboolean (* query_tooltip) (GtkWidget *widget,
406 gboolean keyboard_tooltip,
407 GtkTooltip *tooltip);
409 void (* compute_expand) (GtkWidget *widget,
411 gboolean *vexpand_p);
413 void (* adjust_size_request) (GtkWidget *widget,
414 GtkOrientation orientation,
417 void (* adjust_size_allocation) (GtkWidget *widget,
418 GtkOrientation orientation,
422 gint *allocated_size);
424 void (* style_updated) (GtkWidget *widget);
428 GtkWidgetClassPrivate *priv;
430 /* Padding for future expansion */
431 void (*_gtk_reserved2) (void);
432 void (*_gtk_reserved3) (void);
433 void (*_gtk_reserved4) (void);
434 void (*_gtk_reserved5) (void);
435 void (*_gtk_reserved6) (void);
436 void (*_gtk_reserved7) (void);
437 void (*_gtk_reserved8) (void);
440 struct _GtkWidgetAuxInfo
451 GType gtk_widget_get_type (void) G_GNUC_CONST;
452 GtkWidget* gtk_widget_new (GType type,
453 const gchar *first_property_name,
455 void gtk_widget_destroy (GtkWidget *widget);
456 void gtk_widget_destroyed (GtkWidget *widget,
457 GtkWidget **widget_pointer);
458 void gtk_widget_unparent (GtkWidget *widget);
459 void gtk_widget_show (GtkWidget *widget);
460 void gtk_widget_hide (GtkWidget *widget);
461 void gtk_widget_show_now (GtkWidget *widget);
462 void gtk_widget_show_all (GtkWidget *widget);
463 void gtk_widget_set_no_show_all (GtkWidget *widget,
464 gboolean no_show_all);
465 gboolean gtk_widget_get_no_show_all (GtkWidget *widget);
466 void gtk_widget_map (GtkWidget *widget);
467 void gtk_widget_unmap (GtkWidget *widget);
468 void gtk_widget_realize (GtkWidget *widget);
469 void gtk_widget_unrealize (GtkWidget *widget);
471 void gtk_widget_draw (GtkWidget *widget,
474 void gtk_widget_queue_draw (GtkWidget *widget);
475 void gtk_widget_queue_draw_area (GtkWidget *widget,
480 void gtk_widget_queue_draw_region (GtkWidget *widget,
481 const cairo_region_t*region);
482 void gtk_widget_queue_resize (GtkWidget *widget);
483 void gtk_widget_queue_resize_no_redraw (GtkWidget *widget);
484 GDK_DEPRECATED_IN_3_0_FOR(gtk_widget_get_preferred_size)
485 void gtk_widget_size_request (GtkWidget *widget,
486 GtkRequisition *requisition);
487 void gtk_widget_size_allocate (GtkWidget *widget,
488 GtkAllocation *allocation);
490 GtkSizeRequestMode gtk_widget_get_request_mode (GtkWidget *widget);
491 void gtk_widget_get_preferred_width (GtkWidget *widget,
493 gint *natural_width);
494 void gtk_widget_get_preferred_height_for_width (GtkWidget *widget,
496 gint *minimum_height,
497 gint *natural_height);
498 void gtk_widget_get_preferred_height (GtkWidget *widget,
499 gint *minimum_height,
500 gint *natural_height);
501 void gtk_widget_get_preferred_width_for_height (GtkWidget *widget,
504 gint *natural_width);
505 void gtk_widget_get_preferred_size (GtkWidget *widget,
506 GtkRequisition *minimum_size,
507 GtkRequisition *natural_size);
509 GDK_DEPRECATED_IN_3_0_FOR(gtk_widget_get_preferred_size)
510 void gtk_widget_get_child_requisition (GtkWidget *widget,
511 GtkRequisition *requisition);
512 void gtk_widget_add_accelerator (GtkWidget *widget,
513 const gchar *accel_signal,
514 GtkAccelGroup *accel_group,
516 GdkModifierType accel_mods,
517 GtkAccelFlags accel_flags);
518 gboolean gtk_widget_remove_accelerator (GtkWidget *widget,
519 GtkAccelGroup *accel_group,
521 GdkModifierType accel_mods);
522 void gtk_widget_set_accel_path (GtkWidget *widget,
523 const gchar *accel_path,
524 GtkAccelGroup *accel_group);
525 GList* gtk_widget_list_accel_closures (GtkWidget *widget);
526 gboolean gtk_widget_can_activate_accel (GtkWidget *widget,
528 gboolean gtk_widget_mnemonic_activate (GtkWidget *widget,
529 gboolean group_cycling);
530 gboolean gtk_widget_event (GtkWidget *widget,
532 gint gtk_widget_send_expose (GtkWidget *widget,
534 gboolean gtk_widget_send_focus_change (GtkWidget *widget,
537 gboolean gtk_widget_activate (GtkWidget *widget);
539 void gtk_widget_reparent (GtkWidget *widget,
540 GtkWidget *new_parent);
541 gboolean gtk_widget_intersect (GtkWidget *widget,
542 const GdkRectangle *area,
543 GdkRectangle *intersection);
544 cairo_region_t *gtk_widget_region_intersect (GtkWidget *widget,
545 const cairo_region_t *region);
547 void gtk_widget_freeze_child_notify (GtkWidget *widget);
548 void gtk_widget_child_notify (GtkWidget *widget,
549 const gchar *child_property);
550 void gtk_widget_thaw_child_notify (GtkWidget *widget);
552 void gtk_widget_set_can_focus (GtkWidget *widget,
554 gboolean gtk_widget_get_can_focus (GtkWidget *widget);
555 gboolean gtk_widget_has_focus (GtkWidget *widget);
556 gboolean gtk_widget_is_focus (GtkWidget *widget);
558 gboolean gtk_widget_has_visible_focus (GtkWidget *widget);
559 void gtk_widget_grab_focus (GtkWidget *widget);
561 void gtk_widget_set_can_default (GtkWidget *widget,
562 gboolean can_default);
563 gboolean gtk_widget_get_can_default (GtkWidget *widget);
564 gboolean gtk_widget_has_default (GtkWidget *widget);
565 void gtk_widget_grab_default (GtkWidget *widget);
567 void gtk_widget_set_receives_default (GtkWidget *widget,
568 gboolean receives_default);
569 gboolean gtk_widget_get_receives_default (GtkWidget *widget);
571 gboolean gtk_widget_has_grab (GtkWidget *widget);
573 gboolean gtk_widget_device_is_shadowed (GtkWidget *widget,
577 void gtk_widget_set_name (GtkWidget *widget,
579 const gchar * gtk_widget_get_name (GtkWidget *widget);
581 void gtk_widget_set_state (GtkWidget *widget,
583 GtkStateType gtk_widget_get_state (GtkWidget *widget);
585 void gtk_widget_set_state_flags (GtkWidget *widget,
588 void gtk_widget_unset_state_flags (GtkWidget *widget,
589 GtkStateFlags flags);
590 GtkStateFlags gtk_widget_get_state_flags (GtkWidget *widget);
592 void gtk_widget_set_sensitive (GtkWidget *widget,
594 gboolean gtk_widget_get_sensitive (GtkWidget *widget);
595 gboolean gtk_widget_is_sensitive (GtkWidget *widget);
597 void gtk_widget_set_visible (GtkWidget *widget,
599 gboolean gtk_widget_get_visible (GtkWidget *widget);
601 void gtk_widget_set_has_window (GtkWidget *widget,
602 gboolean has_window);
603 gboolean gtk_widget_get_has_window (GtkWidget *widget);
605 gboolean gtk_widget_is_toplevel (GtkWidget *widget);
606 gboolean gtk_widget_is_drawable (GtkWidget *widget);
607 void gtk_widget_set_realized (GtkWidget *widget,
609 gboolean gtk_widget_get_realized (GtkWidget *widget);
610 void gtk_widget_set_mapped (GtkWidget *widget,
612 gboolean gtk_widget_get_mapped (GtkWidget *widget);
614 void gtk_widget_set_app_paintable (GtkWidget *widget,
615 gboolean app_paintable);
616 gboolean gtk_widget_get_app_paintable (GtkWidget *widget);
618 void gtk_widget_set_double_buffered (GtkWidget *widget,
619 gboolean double_buffered);
620 gboolean gtk_widget_get_double_buffered (GtkWidget *widget);
622 void gtk_widget_set_redraw_on_allocate (GtkWidget *widget,
623 gboolean redraw_on_allocate);
625 void gtk_widget_set_parent (GtkWidget *widget,
627 GtkWidget * gtk_widget_get_parent (GtkWidget *widget);
629 void gtk_widget_set_parent_window (GtkWidget *widget,
630 GdkWindow *parent_window);
631 GdkWindow * gtk_widget_get_parent_window (GtkWidget *widget);
633 void gtk_widget_set_child_visible (GtkWidget *widget,
634 gboolean is_visible);
635 gboolean gtk_widget_get_child_visible (GtkWidget *widget);
637 void gtk_widget_set_window (GtkWidget *widget,
639 GdkWindow * gtk_widget_get_window (GtkWidget *widget);
641 int gtk_widget_get_allocated_width (GtkWidget *widget);
642 int gtk_widget_get_allocated_height (GtkWidget *widget);
644 void gtk_widget_get_allocation (GtkWidget *widget,
645 GtkAllocation *allocation);
646 void gtk_widget_set_allocation (GtkWidget *widget,
647 const GtkAllocation *allocation);
649 void gtk_widget_get_requisition (GtkWidget *widget,
650 GtkRequisition *requisition);
652 gboolean gtk_widget_child_focus (GtkWidget *widget,
653 GtkDirectionType direction);
654 gboolean gtk_widget_keynav_failed (GtkWidget *widget,
655 GtkDirectionType direction);
656 void gtk_widget_error_bell (GtkWidget *widget);
658 void gtk_widget_set_size_request (GtkWidget *widget,
661 void gtk_widget_get_size_request (GtkWidget *widget,
664 void gtk_widget_set_events (GtkWidget *widget,
666 void gtk_widget_add_events (GtkWidget *widget,
668 void gtk_widget_set_device_events (GtkWidget *widget,
670 GdkEventMask events);
671 void gtk_widget_add_device_events (GtkWidget *widget,
673 GdkEventMask events);
675 void gtk_widget_set_device_enabled (GtkWidget *widget,
678 gboolean gtk_widget_get_device_enabled (GtkWidget *widget,
681 GtkWidget* gtk_widget_get_toplevel (GtkWidget *widget);
682 GtkWidget* gtk_widget_get_ancestor (GtkWidget *widget,
684 GdkVisual* gtk_widget_get_visual (GtkWidget *widget);
685 void gtk_widget_set_visual (GtkWidget *widget,
688 GdkScreen * gtk_widget_get_screen (GtkWidget *widget);
689 gboolean gtk_widget_has_screen (GtkWidget *widget);
690 GdkDisplay * gtk_widget_get_display (GtkWidget *widget);
691 GdkWindow * gtk_widget_get_root_window (GtkWidget *widget);
692 GtkSettings* gtk_widget_get_settings (GtkWidget *widget);
693 GtkClipboard *gtk_widget_get_clipboard (GtkWidget *widget,
697 /* Expand flags and related support */
698 gboolean gtk_widget_get_hexpand (GtkWidget *widget);
699 void gtk_widget_set_hexpand (GtkWidget *widget,
701 gboolean gtk_widget_get_hexpand_set (GtkWidget *widget);
702 void gtk_widget_set_hexpand_set (GtkWidget *widget,
704 gboolean gtk_widget_get_vexpand (GtkWidget *widget);
705 void gtk_widget_set_vexpand (GtkWidget *widget,
707 gboolean gtk_widget_get_vexpand_set (GtkWidget *widget);
708 void gtk_widget_set_vexpand_set (GtkWidget *widget,
710 void gtk_widget_queue_compute_expand (GtkWidget *widget);
711 gboolean gtk_widget_compute_expand (GtkWidget *widget,
712 GtkOrientation orientation);
715 /* Multidevice support */
716 gboolean gtk_widget_get_support_multidevice (GtkWidget *widget);
717 void gtk_widget_set_support_multidevice (GtkWidget *widget,
718 gboolean support_multidevice);
720 /* Accessibility support */
722 void gtk_widget_class_set_accessible_type (GtkWidgetClass *widget_class,
725 void gtk_widget_class_set_accessible_role (GtkWidgetClass *widget_class,
727 AtkObject* gtk_widget_get_accessible (GtkWidget *widget);
730 /* Margin and alignment */
731 GtkAlign gtk_widget_get_halign (GtkWidget *widget);
732 void gtk_widget_set_halign (GtkWidget *widget,
734 GtkAlign gtk_widget_get_valign (GtkWidget *widget);
735 void gtk_widget_set_valign (GtkWidget *widget,
737 gint gtk_widget_get_margin_left (GtkWidget *widget);
738 void gtk_widget_set_margin_left (GtkWidget *widget,
740 gint gtk_widget_get_margin_right (GtkWidget *widget);
741 void gtk_widget_set_margin_right (GtkWidget *widget,
743 gint gtk_widget_get_margin_top (GtkWidget *widget);
744 void gtk_widget_set_margin_top (GtkWidget *widget,
746 gint gtk_widget_get_margin_bottom (GtkWidget *widget);
747 void gtk_widget_set_margin_bottom (GtkWidget *widget,
751 gint gtk_widget_get_events (GtkWidget *widget);
752 GdkEventMask gtk_widget_get_device_events (GtkWidget *widget,
754 GDK_DEPRECATED_IN_3_0_FOR(gdk_window_get_device_position)
755 void gtk_widget_get_pointer (GtkWidget *widget,
759 gboolean gtk_widget_is_ancestor (GtkWidget *widget,
760 GtkWidget *ancestor);
762 gboolean gtk_widget_translate_coordinates (GtkWidget *src_widget,
763 GtkWidget *dest_widget,
769 /* Hide widget and return TRUE.
771 gboolean gtk_widget_hide_on_delete (GtkWidget *widget);
773 /* Functions to override widget styling */
774 void gtk_widget_override_color (GtkWidget *widget,
776 const GdkRGBA *color);
777 void gtk_widget_override_background_color (GtkWidget *widget,
779 const GdkRGBA *color);
781 void gtk_widget_override_font (GtkWidget *widget,
782 const PangoFontDescription *font_desc);
784 void gtk_widget_override_symbolic_color (GtkWidget *widget,
786 const GdkRGBA *color);
787 void gtk_widget_override_cursor (GtkWidget *widget,
788 const GdkRGBA *cursor,
789 const GdkRGBA *secondary_cursor);
791 void gtk_widget_reset_style (GtkWidget *widget);
793 PangoContext *gtk_widget_create_pango_context (GtkWidget *widget);
794 PangoContext *gtk_widget_get_pango_context (GtkWidget *widget);
795 PangoLayout *gtk_widget_create_pango_layout (GtkWidget *widget,
798 GdkPixbuf *gtk_widget_render_icon_pixbuf (GtkWidget *widget,
799 const gchar *stock_id,
802 /* handle composite names for GTK_COMPOSITE_CHILD widgets,
803 * the returned name is newly allocated.
805 void gtk_widget_set_composite_name (GtkWidget *widget,
807 gchar* gtk_widget_get_composite_name (GtkWidget *widget);
809 /* Push/pop pairs, to change default values upon a widget's creation.
810 * This will override the values that got set by the
811 * gtk_widget_set_default_* () functions.
813 void gtk_widget_push_composite_child (void);
814 void gtk_widget_pop_composite_child (void);
816 /* widget style properties
818 void gtk_widget_class_install_style_property (GtkWidgetClass *klass,
820 void gtk_widget_class_install_style_property_parser (GtkWidgetClass *klass,
822 GtkRcPropertyParser parser);
823 GParamSpec* gtk_widget_class_find_style_property (GtkWidgetClass *klass,
824 const gchar *property_name);
825 GParamSpec** gtk_widget_class_list_style_properties (GtkWidgetClass *klass,
826 guint *n_properties);
827 void gtk_widget_style_get_property (GtkWidget *widget,
828 const gchar *property_name,
830 void gtk_widget_style_get_valist (GtkWidget *widget,
831 const gchar *first_property_name,
833 void gtk_widget_style_get (GtkWidget *widget,
834 const gchar *first_property_name,
835 ...) G_GNUC_NULL_TERMINATED;
837 /* Functions for setting directionality for widgets */
839 void gtk_widget_set_direction (GtkWidget *widget,
840 GtkTextDirection dir);
841 GtkTextDirection gtk_widget_get_direction (GtkWidget *widget);
843 void gtk_widget_set_default_direction (GtkTextDirection dir);
844 GtkTextDirection gtk_widget_get_default_direction (void);
846 /* Compositing manager functionality */
847 gboolean gtk_widget_is_composited (GtkWidget *widget);
849 /* Counterpart to gdk_window_shape_combine_region.
851 void gtk_widget_shape_combine_region (GtkWidget *widget,
852 cairo_region_t *region);
853 void gtk_widget_input_shape_combine_region (GtkWidget *widget,
854 cairo_region_t *region);
856 GList* gtk_widget_list_mnemonic_labels (GtkWidget *widget);
857 void gtk_widget_add_mnemonic_label (GtkWidget *widget,
859 void gtk_widget_remove_mnemonic_label (GtkWidget *widget,
862 void gtk_widget_set_tooltip_window (GtkWidget *widget,
863 GtkWindow *custom_window);
864 GtkWindow *gtk_widget_get_tooltip_window (GtkWidget *widget);
865 void gtk_widget_trigger_tooltip_query (GtkWidget *widget);
866 void gtk_widget_set_tooltip_text (GtkWidget *widget,
868 gchar * gtk_widget_get_tooltip_text (GtkWidget *widget);
869 void gtk_widget_set_tooltip_markup (GtkWidget *widget,
870 const gchar *markup);
871 gchar * gtk_widget_get_tooltip_markup (GtkWidget *widget);
872 void gtk_widget_set_has_tooltip (GtkWidget *widget,
873 gboolean has_tooltip);
874 gboolean gtk_widget_get_has_tooltip (GtkWidget *widget);
876 gboolean gtk_cairo_should_draw_window (cairo_t *cr,
878 void gtk_cairo_transform_to_window (cairo_t *cr,
882 GType gtk_requisition_get_type (void) G_GNUC_CONST;
883 GtkRequisition *gtk_requisition_new (void) G_GNUC_MALLOC;
884 GtkRequisition *gtk_requisition_copy (const GtkRequisition *requisition);
885 void gtk_requisition_free (GtkRequisition *requisition);
887 gboolean gtk_widget_in_destruction (GtkWidget *widget);
889 GtkStyleContext * gtk_widget_get_style_context (GtkWidget *widget);
891 GtkWidgetPath * gtk_widget_get_path (GtkWidget *widget);
894 GdkModifierType gtk_widget_get_modifier_mask (GtkWidget *widget,
895 GdkModifierIntent intent);
900 #endif /* __GTK_WIDGET_H__ */