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/.
30 #include "gtkcontainer.h"
31 #include "gtkaccelmap.h"
32 #include "gtkiconfactory.h"
35 #include "gtkmarshalers.h"
37 #include "gtkselection.h"
38 #include "gtksettings.h"
39 #include "gtksizegroup.h"
40 #include "gtksignal.h"
41 #include "gtkwidget.h"
42 #include "gtkwindow.h"
43 #include "gtkbindings.h"
44 #include "gtkprivate.h"
46 #include "gdk/gdkprivate.h" /* Used in gtk_reset_shapes_recurse to avoid copy */
47 #include <gobject/gvaluecollector.h>
48 #include <gobject/gobjectnotifyqueue.c>
49 #include "gdk/gdkkeysyms.h"
51 #include "gtkaccessible.h"
52 #include "gtktooltips.h"
54 #define WIDGET_CLASS(w) GTK_WIDGET_GET_CLASS (w)
55 #define INIT_PATH_SIZE (512)
95 PROPERTY_NOTIFY_EVENT,
96 SELECTION_CLEAR_EVENT,
97 SELECTION_REQUEST_EVENT,
98 SELECTION_NOTIFY_EVENT,
113 VISIBILITY_NOTIFY_EVENT,
117 ACCEL_CLOSURES_CHANGED,
134 PROP_RECEIVES_DEFAULT,
135 PROP_COMPOSITE_CHILD,
138 PROP_EXTENSION_EVENTS
141 typedef struct _GtkStateData GtkStateData;
146 guint state_restoration : 1;
147 guint parent_sensitive : 1;
148 guint use_forall : 1;
152 /* --- prototypes --- */
153 static void gtk_widget_class_init (GtkWidgetClass *klass);
154 static void gtk_widget_init (GtkWidget *widget);
155 static void gtk_widget_set_property (GObject *object,
159 static void gtk_widget_get_property (GObject *object,
163 static void gtk_widget_dispose (GObject *object);
164 static void gtk_widget_real_destroy (GtkObject *object);
165 static void gtk_widget_finalize (GObject *object);
166 static void gtk_widget_real_show (GtkWidget *widget);
167 static void gtk_widget_real_hide (GtkWidget *widget);
168 static void gtk_widget_real_map (GtkWidget *widget);
169 static void gtk_widget_real_unmap (GtkWidget *widget);
170 static void gtk_widget_real_realize (GtkWidget *widget);
171 static void gtk_widget_real_unrealize (GtkWidget *widget);
172 static void gtk_widget_real_size_request (GtkWidget *widget,
173 GtkRequisition *requisition);
174 static void gtk_widget_real_size_allocate (GtkWidget *widget,
175 GtkAllocation *allocation);
176 static void gtk_widget_style_set (GtkWidget *widget,
177 GtkStyle *previous_style);
178 static void gtk_widget_direction_changed (GtkWidget *widget,
179 GtkTextDirection previous_direction);
181 static void gtk_widget_real_grab_focus (GtkWidget *focus_widget);
182 static gboolean gtk_widget_real_show_help (GtkWidget *widget,
183 GtkWidgetHelpType help_type);
185 static void gtk_widget_dispatch_child_properties_changed (GtkWidget *object,
187 GParamSpec **pspecs);
188 static gboolean gtk_widget_real_key_press_event (GtkWidget *widget,
190 static gboolean gtk_widget_real_key_release_event (GtkWidget *widget,
192 static gboolean gtk_widget_real_focus_in_event (GtkWidget *widget,
193 GdkEventFocus *event);
194 static gboolean gtk_widget_real_focus_out_event (GtkWidget *widget,
195 GdkEventFocus *event);
196 static gboolean gtk_widget_real_focus (GtkWidget *widget,
197 GtkDirectionType direction);
198 static PangoContext* gtk_widget_peek_pango_context (GtkWidget *widget);
199 static void gtk_widget_reparent_container_child (GtkWidget *widget,
200 gpointer client_data);
201 static void gtk_widget_propagate_state (GtkWidget *widget,
203 static void gtk_widget_reset_rc_style (GtkWidget *widget);
204 static void gtk_widget_set_style_internal (GtkWidget *widget,
206 gboolean initial_emission);
207 static gint gtk_widget_event_internal (GtkWidget *widget,
209 static gboolean gtk_widget_real_mnemonic_activate (GtkWidget *widget,
210 gboolean group_cycling);
211 static void gtk_widget_aux_info_destroy (GtkWidgetAuxInfo *aux_info);
212 static AtkObject* gtk_widget_real_get_accessible (GtkWidget *widget);
213 static void gtk_widget_accessible_interface_init (AtkImplementorIface *iface);
214 static AtkObject* gtk_widget_ref_accessible (AtkImplementor *implementor);
215 static void gtk_widget_invalidate_widget_windows (GtkWidget *widget,
219 /* --- variables --- */
220 static gpointer parent_class = NULL;
221 static guint widget_signals[LAST_SIGNAL] = { 0 };
222 static GMemChunk *aux_info_mem_chunk = NULL;
223 static GdkColormap *default_colormap = NULL;
224 static GtkStyle *gtk_default_style = NULL;
225 static GSList *colormap_stack = NULL;
226 static guint composite_child_stack = 0;
227 static GtkTextDirection gtk_default_direction = GTK_TEXT_DIR_LTR;
228 static GParamSpecPool *style_property_spec_pool = NULL;
230 static GQuark quark_property_parser = 0;
231 static GQuark quark_aux_info = 0;
232 static GQuark quark_accel_path = 0;
233 static GQuark quark_accel_closures = 0;
234 static GQuark quark_event_mask = 0;
235 static GQuark quark_extension_event_mode = 0;
236 static GQuark quark_parent_window = 0;
237 static GQuark quark_shape_info = 0;
238 static GQuark quark_colormap = 0;
239 static GQuark quark_pango_context = 0;
240 static GQuark quark_rc_style = 0;
241 static GQuark quark_accessible_object = 0;
242 GParamSpecPool *_gtk_widget_child_property_pool = NULL;
243 GObjectNotifyContext *_gtk_widget_child_property_notify_context = NULL;
245 /* --- functions --- */
247 gtk_widget_get_type (void)
249 static GtkType widget_type = 0;
253 static const GtkTypeInfo widget_info =
257 sizeof (GtkWidgetClass),
258 (GtkClassInitFunc) gtk_widget_class_init,
259 (GtkObjectInitFunc) gtk_widget_init,
260 /* reserved_1 */ NULL,
261 /* reserved_2 */ NULL,
262 (GtkClassInitFunc) NULL,
265 static const GInterfaceInfo accessibility_info =
267 (GInterfaceInitFunc) gtk_widget_accessible_interface_init,
268 (GInterfaceFinalizeFunc) NULL,
269 NULL /* interface data */
273 widget_type = gtk_type_unique (GTK_TYPE_OBJECT, &widget_info);
275 g_type_add_interface_static (widget_type, ATK_TYPE_IMPLEMENTOR,
276 &accessibility_info) ;
284 child_property_notify_dispatcher (GObject *object,
288 GTK_WIDGET_GET_CLASS (object)->dispatch_child_properties_changed (GTK_WIDGET (object), n_pspecs, pspecs);
292 gtk_widget_class_init (GtkWidgetClass *klass)
294 static GObjectNotifyContext cpn_context = { 0, NULL, NULL };
295 GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
296 GtkObjectClass *object_class = GTK_OBJECT_CLASS (klass);
297 GtkBindingSet *binding_set;
299 parent_class = g_type_class_peek_parent (klass);
301 quark_property_parser = g_quark_from_static_string ("gtk-rc-property-parser");
302 quark_aux_info = g_quark_from_static_string ("gtk-aux-info");
303 quark_accel_path = g_quark_from_static_string ("gtk-accel-path");
304 quark_accel_closures = g_quark_from_static_string ("gtk-accel-closures");
305 quark_event_mask = g_quark_from_static_string ("gtk-event-mask");
306 quark_extension_event_mode = g_quark_from_static_string ("gtk-extension-event-mode");
307 quark_parent_window = g_quark_from_static_string ("gtk-parent-window");
308 quark_shape_info = g_quark_from_static_string ("gtk-shape-info");
309 quark_colormap = g_quark_from_static_string ("gtk-colormap");
310 quark_pango_context = g_quark_from_static_string ("gtk-pango-context");
311 quark_rc_style = g_quark_from_static_string ("gtk-rc-style");
312 quark_accessible_object = g_quark_from_static_string ("gtk-accessible-object");
314 style_property_spec_pool = g_param_spec_pool_new (FALSE);
315 _gtk_widget_child_property_pool = g_param_spec_pool_new (TRUE);
316 cpn_context.quark_notify_queue = g_quark_from_static_string ("GtkWidget-child-property-notify-queue");
317 cpn_context.dispatcher = child_property_notify_dispatcher;
318 _gtk_widget_child_property_notify_context = &cpn_context;
320 gobject_class->dispose = gtk_widget_dispose;
321 gobject_class->finalize = gtk_widget_finalize;
322 gobject_class->set_property = gtk_widget_set_property;
323 gobject_class->get_property = gtk_widget_get_property;
325 object_class->destroy = gtk_widget_real_destroy;
327 klass->activate_signal = 0;
328 klass->set_scroll_adjustments_signal = 0;
329 klass->dispatch_child_properties_changed = gtk_widget_dispatch_child_properties_changed;
330 klass->show = gtk_widget_real_show;
331 klass->show_all = gtk_widget_show;
332 klass->hide = gtk_widget_real_hide;
333 klass->hide_all = gtk_widget_hide;
334 klass->map = gtk_widget_real_map;
335 klass->unmap = gtk_widget_real_unmap;
336 klass->realize = gtk_widget_real_realize;
337 klass->unrealize = gtk_widget_real_unrealize;
338 klass->size_request = gtk_widget_real_size_request;
339 klass->size_allocate = gtk_widget_real_size_allocate;
340 klass->state_changed = NULL;
341 klass->parent_set = NULL;
342 klass->hierarchy_changed = NULL;
343 klass->style_set = gtk_widget_style_set;
344 klass->direction_changed = gtk_widget_direction_changed;
345 klass->grab_notify = NULL;
346 klass->child_notify = NULL;
347 klass->mnemonic_activate = gtk_widget_real_mnemonic_activate;
348 klass->grab_focus = gtk_widget_real_grab_focus;
349 klass->focus = gtk_widget_real_focus;
351 klass->button_press_event = NULL;
352 klass->button_release_event = NULL;
353 klass->motion_notify_event = NULL;
354 klass->delete_event = NULL;
355 klass->destroy_event = NULL;
356 klass->expose_event = NULL;
357 klass->key_press_event = gtk_widget_real_key_press_event;
358 klass->key_release_event = gtk_widget_real_key_release_event;
359 klass->enter_notify_event = NULL;
360 klass->leave_notify_event = NULL;
361 klass->configure_event = NULL;
362 klass->focus_in_event = gtk_widget_real_focus_in_event;
363 klass->focus_out_event = gtk_widget_real_focus_out_event;
364 klass->map_event = NULL;
365 klass->unmap_event = NULL;
366 klass->window_state_event = NULL;
367 klass->property_notify_event = gtk_selection_property_notify;
368 klass->selection_clear_event = gtk_selection_clear;
369 klass->selection_request_event = gtk_selection_request;
370 klass->selection_notify_event = gtk_selection_notify;
371 klass->selection_received = NULL;
372 klass->proximity_in_event = NULL;
373 klass->proximity_out_event = NULL;
374 klass->drag_begin = NULL;
375 klass->drag_end = NULL;
376 klass->drag_data_delete = NULL;
377 klass->drag_leave = NULL;
378 klass->drag_motion = NULL;
379 klass->drag_drop = NULL;
380 klass->drag_data_received = NULL;
382 klass->show_help = gtk_widget_real_show_help;
384 /* Accessibility support */
385 klass->get_accessible = gtk_widget_real_get_accessible;
387 klass->no_expose_event = NULL;
389 g_object_class_install_property (gobject_class,
391 g_param_spec_string ("name",
393 _("The name of the widget"),
396 g_object_class_install_property (gobject_class,
398 g_param_spec_object ("parent",
400 _("The parent widget of this widget. Must be a Container widget."),
404 g_object_class_install_property (gobject_class,
406 g_param_spec_int ("width_request",
408 _("Override for width request of the widget, or -1 if natural request should be used."),
413 g_object_class_install_property (gobject_class,
415 g_param_spec_int ("height_request",
417 _("Override for height request of the widget, or -1 if natural request should be used."),
422 g_object_class_install_property (gobject_class,
424 g_param_spec_boolean ("visible",
426 _("Whether the widget is visible"),
429 g_object_class_install_property (gobject_class,
431 g_param_spec_boolean ("sensitive",
433 _("Whether the widget responds to input"),
436 g_object_class_install_property (gobject_class,
438 g_param_spec_boolean ("app_paintable",
439 _("Application paintable"),
440 _("Whether the application will paint directly on the widget"),
443 g_object_class_install_property (gobject_class,
445 g_param_spec_boolean ("can_focus",
447 _("Whether the widget can accept the input focus"),
450 g_object_class_install_property (gobject_class,
452 g_param_spec_boolean ("has_focus",
454 _("Whether the widget has the input focus"),
457 g_object_class_install_property (gobject_class,
459 g_param_spec_boolean ("can_default",
461 _("Whether the widget can be the default widget"),
464 g_object_class_install_property (gobject_class,
466 g_param_spec_boolean ("has_default",
468 _("Whether the widget is the default widget"),
471 g_object_class_install_property (gobject_class,
472 PROP_RECEIVES_DEFAULT,
473 g_param_spec_boolean ("receives_default",
474 _("Receives default"),
475 _("If TRUE, the widget will receive the default action when it is focused."),
478 g_object_class_install_property (gobject_class,
479 PROP_COMPOSITE_CHILD,
480 g_param_spec_boolean ("composite_child",
481 _("Composite child"),
482 _("Whether the widget is composed of other widgets"),
485 g_object_class_install_property (gobject_class,
487 g_param_spec_object ("style",
489 _("The style of the widget, which contains information about how it will look (colors etc)."),
492 g_object_class_install_property (gobject_class,
494 g_param_spec_flags ("events",
496 _("The event mask that decides what kind of GdkEvents this widget gets."),
500 g_object_class_install_property (gobject_class,
501 PROP_EXTENSION_EVENTS,
502 g_param_spec_enum ("extension_events",
503 _("Extension events"),
504 _("The mask that decides what kind of extension events this widget gets."),
505 GDK_TYPE_EXTENSION_MODE,
506 GDK_EXTENSION_EVENTS_NONE,
508 widget_signals[SHOW] =
509 gtk_signal_new ("show",
511 GTK_CLASS_TYPE (object_class),
512 GTK_SIGNAL_OFFSET (GtkWidgetClass, show),
513 _gtk_marshal_VOID__VOID,
515 widget_signals[HIDE] =
516 gtk_signal_new ("hide",
518 GTK_CLASS_TYPE (object_class),
519 GTK_SIGNAL_OFFSET (GtkWidgetClass, hide),
520 _gtk_marshal_VOID__VOID,
522 widget_signals[MAP] =
523 gtk_signal_new ("map",
525 GTK_CLASS_TYPE (object_class),
526 GTK_SIGNAL_OFFSET (GtkWidgetClass, map),
527 _gtk_marshal_VOID__VOID,
529 widget_signals[UNMAP] =
530 gtk_signal_new ("unmap",
532 GTK_CLASS_TYPE (object_class),
533 GTK_SIGNAL_OFFSET (GtkWidgetClass, unmap),
534 _gtk_marshal_VOID__VOID,
536 widget_signals[REALIZE] =
537 gtk_signal_new ("realize",
539 GTK_CLASS_TYPE (object_class),
540 GTK_SIGNAL_OFFSET (GtkWidgetClass, realize),
541 _gtk_marshal_VOID__VOID,
543 widget_signals[UNREALIZE] =
544 gtk_signal_new ("unrealize",
546 GTK_CLASS_TYPE (object_class),
547 GTK_SIGNAL_OFFSET (GtkWidgetClass, unrealize),
548 _gtk_marshal_VOID__VOID,
550 widget_signals[SIZE_REQUEST] =
551 g_signal_new ("size_request",
552 G_OBJECT_CLASS_TYPE (object_class),
554 G_STRUCT_OFFSET (GtkWidgetClass, size_request),
556 _gtk_marshal_VOID__BOXED,
558 GTK_TYPE_REQUISITION | G_SIGNAL_TYPE_STATIC_SCOPE);
559 widget_signals[SIZE_ALLOCATE] =
560 gtk_signal_new ("size_allocate",
562 GTK_CLASS_TYPE (object_class),
563 GTK_SIGNAL_OFFSET (GtkWidgetClass, size_allocate),
564 _gtk_marshal_VOID__BOXED,
566 GDK_TYPE_RECTANGLE | G_SIGNAL_TYPE_STATIC_SCOPE);
567 widget_signals[STATE_CHANGED] =
568 gtk_signal_new ("state_changed",
570 GTK_CLASS_TYPE (object_class),
571 GTK_SIGNAL_OFFSET (GtkWidgetClass, state_changed),
572 _gtk_marshal_VOID__ENUM,
574 GTK_TYPE_STATE_TYPE);
575 widget_signals[PARENT_SET] =
576 gtk_signal_new ("parent_set",
578 GTK_CLASS_TYPE (object_class),
579 GTK_SIGNAL_OFFSET (GtkWidgetClass, parent_set),
580 _gtk_marshal_VOID__OBJECT,
583 widget_signals[HIERARCHY_CHANGED] =
584 gtk_signal_new ("hierarchy_changed",
586 GTK_CLASS_TYPE (object_class),
587 GTK_SIGNAL_OFFSET (GtkWidgetClass, hierarchy_changed),
588 _gtk_marshal_VOID__OBJECT,
591 widget_signals[STYLE_SET] =
592 gtk_signal_new ("style_set",
594 GTK_CLASS_TYPE (object_class),
595 GTK_SIGNAL_OFFSET (GtkWidgetClass, style_set),
596 _gtk_marshal_VOID__OBJECT,
599 widget_signals[DIRECTION_CHANGED] =
600 gtk_signal_new ("direction_changed",
602 GTK_CLASS_TYPE (object_class),
603 GTK_SIGNAL_OFFSET (GtkWidgetClass, direction_changed),
604 _gtk_marshal_VOID__ENUM,
606 GTK_TYPE_TEXT_DIRECTION);
607 widget_signals[GRAB_NOTIFY] =
608 gtk_signal_new ("grab_notify",
610 GTK_CLASS_TYPE (object_class),
611 GTK_SIGNAL_OFFSET (GtkWidgetClass, grab_notify),
612 _gtk_marshal_VOID__BOOLEAN,
615 widget_signals[CHILD_NOTIFY] =
616 g_signal_new ("child_notify",
617 G_TYPE_FROM_CLASS (klass),
618 G_SIGNAL_RUN_FIRST | G_SIGNAL_NO_RECURSE | G_SIGNAL_DETAILED | G_SIGNAL_NO_HOOKS,
619 G_STRUCT_OFFSET (GtkWidgetClass, child_notify),
621 g_cclosure_marshal_VOID__PARAM,
624 widget_signals[MNEMONIC_ACTIVATE] =
625 g_signal_new ("mnemonic_activate",
626 GTK_CLASS_TYPE (object_class),
628 GTK_SIGNAL_OFFSET (GtkWidgetClass, mnemonic_activate),
629 _gtk_boolean_handled_accumulator, NULL,
630 _gtk_marshal_BOOLEAN__BOOLEAN,
633 widget_signals[GRAB_FOCUS] =
634 gtk_signal_new ("grab_focus",
635 GTK_RUN_LAST | GTK_RUN_ACTION,
636 GTK_CLASS_TYPE (object_class),
637 GTK_SIGNAL_OFFSET (GtkWidgetClass, grab_focus),
638 _gtk_marshal_VOID__VOID,
640 widget_signals[FOCUS] =
641 g_signal_new ("focus",
642 G_TYPE_FROM_CLASS (object_class),
644 G_STRUCT_OFFSET (GtkWidgetClass, focus),
645 _gtk_boolean_handled_accumulator, NULL,
646 _gtk_marshal_BOOLEAN__ENUM,
648 GTK_TYPE_DIRECTION_TYPE);
649 widget_signals[EVENT] =
650 g_signal_new ("event",
651 G_TYPE_FROM_CLASS (object_class),
653 G_STRUCT_OFFSET(GtkWidgetClass, event),
654 _gtk_boolean_handled_accumulator, NULL,
655 _gtk_marshal_BOOLEAN__BOXED,
657 GDK_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE);
658 widget_signals[EVENT_AFTER] =
659 g_signal_new ("event-after",
660 G_TYPE_FROM_CLASS (object_class),
664 _gtk_marshal_VOID__BOXED,
665 G_TYPE_NONE, 1, GDK_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE);
666 widget_signals[BUTTON_PRESS_EVENT] =
667 g_signal_new ("button_press_event",
668 G_TYPE_FROM_CLASS (object_class),
670 G_STRUCT_OFFSET(GtkWidgetClass, button_press_event),
671 _gtk_boolean_handled_accumulator, NULL,
672 _gtk_marshal_BOOLEAN__BOXED,
674 GDK_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE);
675 widget_signals[BUTTON_RELEASE_EVENT] =
676 g_signal_new ("button_release_event",
677 G_TYPE_FROM_CLASS(object_class),
679 G_STRUCT_OFFSET(GtkWidgetClass, button_release_event),
680 _gtk_boolean_handled_accumulator, NULL,
681 _gtk_marshal_BOOLEAN__BOXED,
683 GDK_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE);
684 widget_signals[SCROLL_EVENT] =
685 g_signal_new ("scroll_event",
686 G_TYPE_FROM_CLASS(object_class),
688 G_STRUCT_OFFSET(GtkWidgetClass, scroll_event),
689 _gtk_boolean_handled_accumulator, NULL,
690 _gtk_marshal_BOOLEAN__BOXED,
692 GDK_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE);
693 widget_signals[MOTION_NOTIFY_EVENT] =
694 g_signal_new ("motion_notify_event",
695 G_TYPE_FROM_CLASS(object_class),
697 G_STRUCT_OFFSET(GtkWidgetClass, motion_notify_event),
698 _gtk_boolean_handled_accumulator, NULL,
699 _gtk_marshal_BOOLEAN__BOXED,
701 GDK_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE);
702 widget_signals[DELETE_EVENT] =
703 g_signal_new ("delete_event",
704 G_TYPE_FROM_CLASS(object_class),
706 G_STRUCT_OFFSET(GtkWidgetClass, delete_event),
707 _gtk_boolean_handled_accumulator, NULL,
708 _gtk_marshal_BOOLEAN__BOXED,
710 GDK_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE);
711 widget_signals[DESTROY_EVENT] =
712 g_signal_new ("destroy_event",
713 G_TYPE_FROM_CLASS(object_class),
715 G_STRUCT_OFFSET(GtkWidgetClass, destroy_event),
716 _gtk_boolean_handled_accumulator, NULL,
717 _gtk_marshal_BOOLEAN__BOXED,
719 GDK_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE);
720 widget_signals[EXPOSE_EVENT] =
721 g_signal_new ("expose_event",
722 G_TYPE_FROM_CLASS(object_class),
724 G_STRUCT_OFFSET(GtkWidgetClass, expose_event),
725 _gtk_boolean_handled_accumulator, NULL,
726 _gtk_marshal_BOOLEAN__BOXED,
728 GDK_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE);
729 widget_signals[KEY_PRESS_EVENT] =
730 g_signal_new ("key_press_event",
731 G_TYPE_FROM_CLASS(object_class),
733 G_STRUCT_OFFSET(GtkWidgetClass, key_press_event),
734 _gtk_boolean_handled_accumulator, NULL,
735 _gtk_marshal_BOOLEAN__BOXED,
737 GDK_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE);
738 widget_signals[KEY_RELEASE_EVENT] =
739 g_signal_new ("key_release_event",
740 G_TYPE_FROM_CLASS(object_class),
742 G_STRUCT_OFFSET(GtkWidgetClass, key_release_event),
743 _gtk_boolean_handled_accumulator, NULL,
744 _gtk_marshal_BOOLEAN__BOXED,
746 GDK_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE);
747 widget_signals[ENTER_NOTIFY_EVENT] =
748 g_signal_new ("enter_notify_event",
749 G_TYPE_FROM_CLASS(object_class),
751 G_STRUCT_OFFSET(GtkWidgetClass, enter_notify_event),
752 _gtk_boolean_handled_accumulator, NULL,
753 _gtk_marshal_BOOLEAN__BOXED,
755 GDK_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE);
756 widget_signals[LEAVE_NOTIFY_EVENT] =
757 g_signal_new ("leave_notify_event",
758 G_TYPE_FROM_CLASS(object_class),
760 G_STRUCT_OFFSET(GtkWidgetClass, leave_notify_event),
761 _gtk_boolean_handled_accumulator, NULL,
762 _gtk_marshal_BOOLEAN__BOXED,
764 GDK_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE);
765 widget_signals[CONFIGURE_EVENT] =
766 g_signal_new ("configure_event",
767 G_TYPE_FROM_CLASS(object_class),
769 G_STRUCT_OFFSET(GtkWidgetClass, configure_event),
770 _gtk_boolean_handled_accumulator, NULL,
771 _gtk_marshal_BOOLEAN__BOXED,
773 GDK_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE);
774 widget_signals[FOCUS_IN_EVENT] =
775 g_signal_new ("focus_in_event",
776 G_TYPE_FROM_CLASS(object_class),
778 G_STRUCT_OFFSET(GtkWidgetClass, focus_in_event),
779 _gtk_boolean_handled_accumulator, NULL,
780 _gtk_marshal_BOOLEAN__BOXED,
782 GDK_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE);
783 widget_signals[FOCUS_OUT_EVENT] =
784 g_signal_new ("focus_out_event",
785 G_TYPE_FROM_CLASS(object_class),
787 G_STRUCT_OFFSET(GtkWidgetClass, focus_out_event),
788 _gtk_boolean_handled_accumulator, NULL,
789 _gtk_marshal_BOOLEAN__BOXED,
791 GDK_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE);
792 widget_signals[MAP_EVENT] =
793 g_signal_new ("map_event",
794 G_TYPE_FROM_CLASS(object_class),
796 G_STRUCT_OFFSET(GtkWidgetClass, map_event),
797 _gtk_boolean_handled_accumulator, NULL,
798 _gtk_marshal_BOOLEAN__BOXED,
800 GDK_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE);
801 widget_signals[UNMAP_EVENT] =
802 g_signal_new ("unmap_event",
803 G_TYPE_FROM_CLASS(object_class),
805 G_STRUCT_OFFSET(GtkWidgetClass, unmap_event),
806 _gtk_boolean_handled_accumulator, NULL,
807 _gtk_marshal_BOOLEAN__BOXED,
809 GDK_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE);
810 widget_signals[PROPERTY_NOTIFY_EVENT] =
811 g_signal_new ("property_notify_event",
812 G_TYPE_FROM_CLASS(object_class),
814 G_STRUCT_OFFSET(GtkWidgetClass, property_notify_event),
815 _gtk_boolean_handled_accumulator, NULL,
816 _gtk_marshal_BOOLEAN__BOXED,
818 GDK_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE);
819 widget_signals[SELECTION_CLEAR_EVENT] =
820 g_signal_new ("selection_clear_event",
821 G_TYPE_FROM_CLASS(object_class),
823 G_STRUCT_OFFSET(GtkWidgetClass, selection_clear_event),
824 _gtk_boolean_handled_accumulator, NULL,
825 _gtk_marshal_BOOLEAN__BOXED,
827 GDK_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE);
828 widget_signals[SELECTION_REQUEST_EVENT] =
829 g_signal_new ("selection_request_event",
830 G_TYPE_FROM_CLASS(object_class),
832 G_STRUCT_OFFSET(GtkWidgetClass, selection_request_event),
833 _gtk_boolean_handled_accumulator, NULL,
834 _gtk_marshal_BOOLEAN__BOXED,
836 GDK_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE);
837 widget_signals[SELECTION_NOTIFY_EVENT] =
838 g_signal_new ("selection_notify_event",
839 G_TYPE_FROM_CLASS(object_class),
841 G_STRUCT_OFFSET(GtkWidgetClass, selection_notify_event),
842 _gtk_boolean_handled_accumulator, NULL,
843 _gtk_marshal_BOOLEAN__BOXED,
845 GDK_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE);
846 widget_signals[SELECTION_RECEIVED] =
847 g_signal_new ("selection_received",
848 G_TYPE_FROM_CLASS (object_class),
850 G_STRUCT_OFFSET (GtkWidgetClass, selection_received),
852 _gtk_marshal_VOID__BOXED_UINT,
854 GTK_TYPE_SELECTION_DATA | G_SIGNAL_TYPE_STATIC_SCOPE,
856 widget_signals[SELECTION_GET] =
857 g_signal_new ("selection_get",
858 G_TYPE_FROM_CLASS (object_class),
860 G_STRUCT_OFFSET (GtkWidgetClass, selection_get),
862 _gtk_marshal_VOID__BOXED_UINT_UINT,
864 GTK_TYPE_SELECTION_DATA | G_SIGNAL_TYPE_STATIC_SCOPE,
867 widget_signals[PROXIMITY_IN_EVENT] =
868 g_signal_new ("proximity_in_event",
869 G_TYPE_FROM_CLASS (object_class),
871 G_STRUCT_OFFSET(GtkWidgetClass, proximity_in_event),
872 _gtk_boolean_handled_accumulator, NULL,
873 _gtk_marshal_BOOLEAN__BOXED,
875 GDK_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE);
876 widget_signals[PROXIMITY_OUT_EVENT] =
877 g_signal_new ("proximity_out_event",
878 G_TYPE_FROM_CLASS(object_class),
880 G_STRUCT_OFFSET(GtkWidgetClass, proximity_out_event),
881 _gtk_boolean_handled_accumulator, NULL,
882 _gtk_marshal_BOOLEAN__BOXED,
884 GDK_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE);
885 widget_signals[DRAG_LEAVE] =
886 gtk_signal_new ("drag_leave",
888 GTK_CLASS_TYPE (object_class),
889 GTK_SIGNAL_OFFSET (GtkWidgetClass, drag_leave),
890 _gtk_marshal_VOID__OBJECT_UINT,
892 GDK_TYPE_DRAG_CONTEXT,
894 widget_signals[DRAG_BEGIN] =
895 gtk_signal_new ("drag_begin",
897 GTK_CLASS_TYPE (object_class),
898 GTK_SIGNAL_OFFSET (GtkWidgetClass, drag_begin),
899 _gtk_marshal_VOID__OBJECT,
901 GDK_TYPE_DRAG_CONTEXT);
902 widget_signals[DRAG_END] =
903 gtk_signal_new ("drag_end",
905 GTK_CLASS_TYPE (object_class),
906 GTK_SIGNAL_OFFSET (GtkWidgetClass, drag_end),
907 _gtk_marshal_VOID__OBJECT,
909 GDK_TYPE_DRAG_CONTEXT);
910 widget_signals[DRAG_DATA_DELETE] =
911 gtk_signal_new ("drag_data_delete",
913 GTK_CLASS_TYPE (object_class),
914 GTK_SIGNAL_OFFSET (GtkWidgetClass, drag_data_delete),
915 _gtk_marshal_VOID__OBJECT,
917 GDK_TYPE_DRAG_CONTEXT);
918 widget_signals[DRAG_MOTION] =
919 g_signal_new ("drag_motion",
920 G_TYPE_FROM_CLASS(object_class),
922 G_STRUCT_OFFSET(GtkWidgetClass, drag_motion),
923 _gtk_boolean_handled_accumulator, NULL,
924 _gtk_marshal_BOOLEAN__OBJECT_INT_INT_UINT,
926 GDK_TYPE_DRAG_CONTEXT,
930 widget_signals[DRAG_DROP] =
931 g_signal_new ("drag_drop",
932 G_TYPE_FROM_CLASS(object_class),
934 G_STRUCT_OFFSET(GtkWidgetClass, drag_drop),
935 _gtk_boolean_handled_accumulator, NULL,
936 _gtk_marshal_BOOLEAN__OBJECT_INT_INT_UINT,
938 GDK_TYPE_DRAG_CONTEXT,
942 widget_signals[DRAG_DATA_GET] =
943 g_signal_new ("drag_data_get",
944 G_TYPE_FROM_CLASS (object_class),
946 G_STRUCT_OFFSET (GtkWidgetClass, drag_data_get),
948 _gtk_marshal_VOID__OBJECT_BOXED_UINT_UINT,
950 GDK_TYPE_DRAG_CONTEXT,
951 GTK_TYPE_SELECTION_DATA | G_SIGNAL_TYPE_STATIC_SCOPE,
954 widget_signals[DRAG_DATA_RECEIVED] =
955 g_signal_new ("drag_data_received",
956 G_TYPE_FROM_CLASS (object_class),
958 GTK_SIGNAL_OFFSET (GtkWidgetClass, drag_data_received),
960 _gtk_marshal_VOID__OBJECT_INT_INT_BOXED_UINT_UINT,
962 GDK_TYPE_DRAG_CONTEXT,
965 GTK_TYPE_SELECTION_DATA | G_SIGNAL_TYPE_STATIC_SCOPE,
968 widget_signals[VISIBILITY_NOTIFY_EVENT] =
969 g_signal_new ("visibility_notify_event",
970 G_TYPE_FROM_CLASS(object_class),
972 G_STRUCT_OFFSET(GtkWidgetClass, visibility_notify_event),
973 _gtk_boolean_handled_accumulator, NULL,
974 _gtk_marshal_BOOLEAN__BOXED,
976 GDK_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE);
977 widget_signals[CLIENT_EVENT] =
978 g_signal_new ("client_event",
979 G_TYPE_FROM_CLASS(object_class),
981 G_STRUCT_OFFSET(GtkWidgetClass, client_event),
982 _gtk_boolean_handled_accumulator, NULL,
983 _gtk_marshal_BOOLEAN__BOXED,
985 GDK_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE);
986 widget_signals[NO_EXPOSE_EVENT] =
987 g_signal_new ("no_expose_event",
988 G_TYPE_FROM_CLASS(object_class),
990 G_STRUCT_OFFSET(GtkWidgetClass, no_expose_event),
991 _gtk_boolean_handled_accumulator, NULL,
992 _gtk_marshal_BOOLEAN__BOXED,
994 GDK_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE);
995 widget_signals[WINDOW_STATE_EVENT] =
996 g_signal_new ("window_state_event",
997 G_TYPE_FROM_CLASS(object_class),
999 G_STRUCT_OFFSET(GtkWidgetClass, window_state_event),
1000 _gtk_boolean_handled_accumulator, NULL,
1001 _gtk_marshal_BOOLEAN__BOXED,
1003 GDK_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE);
1004 widget_signals[POPUP_MENU] =
1005 g_signal_new ("popup_menu",
1006 G_TYPE_FROM_CLASS (object_class),
1007 G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1008 GTK_SIGNAL_OFFSET (GtkWidgetClass, popup_menu),
1009 _gtk_boolean_handled_accumulator, NULL,
1010 _gtk_marshal_BOOLEAN__VOID,
1012 widget_signals[SHOW_HELP] =
1013 g_signal_new ("show_help",
1014 G_TYPE_FROM_CLASS (object_class),
1015 G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1016 GTK_SIGNAL_OFFSET (GtkWidgetClass, show_help),
1017 _gtk_boolean_handled_accumulator, NULL,
1018 _gtk_marshal_BOOLEAN__ENUM,
1019 G_TYPE_BOOLEAN, 1, GTK_TYPE_WIDGET_HELP_TYPE);
1020 widget_signals[ACCEL_CLOSURES_CHANGED] =
1021 gtk_signal_new ("accel_closures_changed",
1023 GTK_CLASS_TYPE (object_class),
1025 gtk_marshal_NONE__NONE,
1028 binding_set = gtk_binding_set_by_class (klass);
1029 gtk_binding_entry_add_signal (binding_set, GDK_F10, GDK_SHIFT_MASK,
1031 gtk_binding_entry_add_signal (binding_set, GDK_Menu, 0,
1034 gtk_binding_entry_add_signal (binding_set, GDK_F1, GDK_CONTROL_MASK,
1036 GTK_TYPE_WIDGET_HELP_TYPE,
1037 GTK_WIDGET_HELP_TOOLTIP);
1038 gtk_binding_entry_add_signal (binding_set, GDK_KP_F1, GDK_CONTROL_MASK,
1040 GTK_TYPE_WIDGET_HELP_TYPE,
1041 GTK_WIDGET_HELP_TOOLTIP);
1042 gtk_binding_entry_add_signal (binding_set, GDK_F1, GDK_SHIFT_MASK,
1044 GTK_TYPE_WIDGET_HELP_TYPE,
1045 GTK_WIDGET_HELP_WHATS_THIS);
1046 gtk_binding_entry_add_signal (binding_set, GDK_KP_F1, GDK_SHIFT_MASK,
1048 GTK_TYPE_WIDGET_HELP_TYPE,
1049 GTK_WIDGET_HELP_WHATS_THIS);
1051 gtk_widget_class_install_style_property (klass,
1052 g_param_spec_boolean ("interior_focus",
1053 _("Interior Focus"),
1054 _("Whether to draw the focus indicator inside widgets."),
1058 gtk_widget_class_install_style_property (klass,
1059 g_param_spec_int ("focus-line-width",
1060 _("Focus linewidth"),
1061 _("Width, in pixels, of the focus indicator line."),
1063 G_PARAM_READWRITE));
1065 gtk_widget_class_install_style_property (klass,
1066 g_param_spec_string ("focus-line-pattern",
1067 _("Focus line dash pattern"),
1068 _("Dash pattern used to draw the focus indicator."),
1070 G_PARAM_READWRITE));
1071 gtk_widget_class_install_style_property (klass,
1072 g_param_spec_int ("focus-padding",
1074 _("Width, in pixels, between focus indicator and the widget 'box'."),
1076 G_PARAM_READWRITE));
1077 gtk_widget_class_install_style_property (klass,
1078 g_param_spec_boxed ("cursor-color",
1080 _("Color with which to draw insertion cursor"),
1083 gtk_widget_class_install_style_property (klass,
1084 g_param_spec_float ("cursor-aspect-ratio",
1085 _("Cursor line aspect ratio"),
1086 _("Aspect ratio with which to draw insertion cursor"),
1092 gtk_widget_set_property (GObject *object,
1094 const GValue *value,
1097 GtkWidget *widget = GTK_WIDGET (object);
1101 guint32 saved_flags;
1104 gtk_widget_set_name (widget, g_value_get_string (value));
1107 gtk_container_add (GTK_CONTAINER (g_value_get_object (value)), widget);
1109 case PROP_WIDTH_REQUEST:
1110 gtk_widget_set_usize (widget, g_value_get_int (value), -2);
1112 case PROP_HEIGHT_REQUEST:
1113 gtk_widget_set_usize (widget, -2, g_value_get_int (value));
1116 if (g_value_get_boolean (value))
1117 gtk_widget_show (widget);
1119 gtk_widget_hide (widget);
1121 case PROP_SENSITIVE:
1122 gtk_widget_set_sensitive (widget, g_value_get_boolean (value));
1124 case PROP_APP_PAINTABLE:
1125 gtk_widget_set_app_paintable (widget, g_value_get_boolean (value));
1127 case PROP_CAN_FOCUS:
1128 saved_flags = GTK_WIDGET_FLAGS (widget);
1129 if (g_value_get_boolean (value))
1130 GTK_WIDGET_SET_FLAGS (widget, GTK_CAN_FOCUS);
1132 GTK_WIDGET_UNSET_FLAGS (widget, GTK_CAN_FOCUS);
1133 if (saved_flags != GTK_WIDGET_FLAGS (widget))
1134 gtk_widget_queue_resize (widget);
1136 case PROP_HAS_FOCUS:
1137 if (g_value_get_boolean (value))
1138 gtk_widget_grab_focus (widget);
1140 case PROP_CAN_DEFAULT:
1141 saved_flags = GTK_WIDGET_FLAGS (widget);
1142 if (g_value_get_boolean (value))
1143 GTK_WIDGET_SET_FLAGS (widget, GTK_CAN_DEFAULT);
1145 GTK_WIDGET_UNSET_FLAGS (widget, GTK_CAN_DEFAULT);
1146 if (saved_flags != GTK_WIDGET_FLAGS (widget))
1147 gtk_widget_queue_resize (widget);
1149 case PROP_HAS_DEFAULT:
1150 if (g_value_get_boolean (value))
1151 gtk_widget_grab_default (widget);
1153 case PROP_RECEIVES_DEFAULT:
1154 if (g_value_get_boolean (value))
1155 GTK_WIDGET_SET_FLAGS (widget, GTK_RECEIVES_DEFAULT);
1157 GTK_WIDGET_UNSET_FLAGS (widget, GTK_RECEIVES_DEFAULT);
1160 gtk_widget_set_style (widget, g_value_get_object (value));
1163 if (!GTK_WIDGET_REALIZED (widget) && !GTK_WIDGET_NO_WINDOW (widget))
1164 gtk_widget_set_events (widget, g_value_get_flags (value));
1166 case PROP_EXTENSION_EVENTS:
1167 gtk_widget_set_extension_events (widget, g_value_get_enum (value));
1175 gtk_widget_get_property (GObject *object,
1180 GtkWidget *widget = GTK_WIDGET (object);
1185 GdkExtensionMode *modep;
1189 g_value_set_string (value, widget->name);
1191 g_value_set_string (value, "");
1195 g_value_set_object (value, widget->parent);
1197 g_value_set_object (value, NULL);
1199 case PROP_WIDTH_REQUEST:
1202 gtk_widget_get_size_request (widget, &w, NULL);
1203 g_value_set_int (value, w);
1206 case PROP_HEIGHT_REQUEST:
1209 gtk_widget_get_size_request (widget, NULL, &h);
1210 g_value_set_int (value, h);
1214 g_value_set_boolean (value, (GTK_WIDGET_VISIBLE (widget) != FALSE));
1216 case PROP_SENSITIVE:
1217 g_value_set_boolean (value, (GTK_WIDGET_SENSITIVE (widget) != FALSE));
1219 case PROP_APP_PAINTABLE:
1220 g_value_set_boolean (value, (GTK_WIDGET_APP_PAINTABLE (widget) != FALSE));
1222 case PROP_CAN_FOCUS:
1223 g_value_set_boolean (value, (GTK_WIDGET_CAN_FOCUS (widget) != FALSE));
1225 case PROP_HAS_FOCUS:
1226 g_value_set_boolean (value, (GTK_WIDGET_HAS_FOCUS (widget) != FALSE));
1228 case PROP_CAN_DEFAULT:
1229 g_value_set_boolean (value, (GTK_WIDGET_CAN_DEFAULT (widget) != FALSE));
1231 case PROP_HAS_DEFAULT:
1232 g_value_set_boolean (value, (GTK_WIDGET_HAS_DEFAULT (widget) != FALSE));
1234 case PROP_RECEIVES_DEFAULT:
1235 g_value_set_boolean (value, (GTK_WIDGET_RECEIVES_DEFAULT (widget) != FALSE));
1237 case PROP_COMPOSITE_CHILD:
1238 g_value_set_boolean (value, (GTK_WIDGET_COMPOSITE_CHILD (widget) != FALSE));
1241 g_value_set_object (value, gtk_widget_get_style (widget));
1244 eventp = gtk_object_get_data_by_id (GTK_OBJECT (widget), quark_event_mask);
1246 g_value_set_flags (value, 0);
1248 g_value_set_flags (value, *eventp);
1250 case PROP_EXTENSION_EVENTS:
1251 modep = gtk_object_get_data_by_id (GTK_OBJECT (widget), quark_extension_event_mode);
1253 g_value_set_enum (value, 0);
1255 g_value_set_enum (value, (GdkExtensionMode) *modep);
1258 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1264 gtk_widget_init (GtkWidget *widget)
1266 GTK_PRIVATE_FLAGS (widget) = PRIVATE_GTK_CHILD_VISIBLE;
1267 widget->state = GTK_STATE_NORMAL;
1268 widget->saved_state = GTK_STATE_NORMAL;
1269 widget->name = NULL;
1270 widget->requisition.width = 0;
1271 widget->requisition.height = 0;
1272 widget->allocation.x = -1;
1273 widget->allocation.y = -1;
1274 widget->allocation.width = 1;
1275 widget->allocation.height = 1;
1276 widget->window = NULL;
1277 widget->parent = NULL;
1279 GTK_WIDGET_SET_FLAGS (widget,
1281 GTK_PARENT_SENSITIVE |
1282 (composite_child_stack ? GTK_COMPOSITE_CHILD : 0) |
1283 GTK_DOUBLE_BUFFERED);
1285 GTK_PRIVATE_SET_FLAG (widget, GTK_REDRAW_ON_ALLOC);
1286 GTK_PRIVATE_SET_FLAG (widget, GTK_REQUEST_NEEDED);
1287 GTK_PRIVATE_SET_FLAG (widget, GTK_ALLOC_NEEDED);
1289 widget->style = gtk_widget_get_default_style ();
1290 g_object_ref (widget->style);
1295 gtk_widget_dispatch_child_properties_changed (GtkWidget *widget,
1297 GParamSpec **pspecs)
1299 GtkWidget *container = widget->parent;
1302 for (i = 0; widget->parent == container && i < n_pspecs; i++)
1303 g_signal_emit (widget, widget_signals[CHILD_NOTIFY], g_quark_from_string (pspecs[i]->name), pspecs[i]);
1307 gtk_widget_freeze_child_notify (GtkWidget *widget)
1309 g_return_if_fail (GTK_IS_WIDGET (widget));
1311 if (!G_OBJECT (widget)->ref_count)
1314 g_object_ref (widget);
1315 g_object_notify_queue_freeze (G_OBJECT (widget), _gtk_widget_child_property_notify_context);
1316 g_object_unref (widget);
1320 gtk_widget_child_notify (GtkWidget *widget,
1321 const gchar *child_property)
1325 g_return_if_fail (GTK_IS_WIDGET (widget));
1326 g_return_if_fail (child_property != NULL);
1327 if (!G_OBJECT (widget)->ref_count || !widget->parent)
1330 g_object_ref (widget);
1331 pspec = g_param_spec_pool_lookup (_gtk_widget_child_property_pool,
1333 G_OBJECT_TYPE (widget->parent),
1336 g_warning ("%s: container class `%s' has no child property named `%s'",
1338 G_OBJECT_TYPE_NAME (widget->parent),
1342 GObjectNotifyQueue *nqueue = g_object_notify_queue_freeze (G_OBJECT (widget), _gtk_widget_child_property_notify_context);
1344 g_object_notify_queue_add (G_OBJECT (widget), nqueue, pspec);
1345 g_object_notify_queue_thaw (G_OBJECT (widget), nqueue);
1347 g_object_unref (widget);
1351 * gtk_widget_thaw_child_notify:
1352 * @widget: a #GtkWidget
1354 * Reverts the effect of a previous call to gtk_widget_freeze_child_notify().
1357 gtk_widget_thaw_child_notify (GtkWidget *widget)
1359 GObjectNotifyQueue *nqueue;
1361 g_return_if_fail (GTK_IS_WIDGET (widget));
1363 if (!G_OBJECT (widget)->ref_count)
1366 g_object_ref (widget);
1367 nqueue = g_object_notify_queue_from_object (G_OBJECT (widget), _gtk_widget_child_property_notify_context);
1368 if (!nqueue || !nqueue->freeze_count)
1369 g_warning (G_STRLOC ": child-property-changed notification for %s(%p) is not frozen",
1370 G_OBJECT_TYPE_NAME (widget), widget);
1372 g_object_notify_queue_thaw (G_OBJECT (widget), nqueue);
1373 g_object_unref (widget);
1379 * @type: type ID of the widget to create
1380 * @first_property_name: name of first property to set
1381 * @Varargs: value of first property, followed by more properties, %NULL-terminated
1383 * This is a convenience function for creating a widget and setting
1384 * its properties in one go. For example you might write:
1385 * <literal>gtk_widget_new (GTK_TYPE_LABEL, "label", "Hello World", "xalign",
1386 * 0.0, NULL)</literal> to create a left-aligned label. Equivalent to
1387 * gtk_object_new(), but returns a widget so you don't have to
1388 * cast the object yourself.
1390 * Return value: a new #GtkWidget of type @widget_type
1393 gtk_widget_new (GtkType type,
1394 const gchar *first_property_name,
1400 g_return_val_if_fail (gtk_type_is_a (type, GTK_TYPE_WIDGET), NULL);
1402 va_start (var_args, first_property_name);
1403 widget = (GtkWidget *)g_object_new_valist (type, first_property_name, var_args);
1411 * @widget: a #GtkWidget
1412 * @first_property_name: name of first property to set
1413 * @Varargs: value of first property, followed by more properties, %NULL-terminated
1415 * Like gtk_object_set() - there's no reason to use this instead of
1419 gtk_widget_set (GtkWidget *widget,
1420 const gchar *first_property_name,
1425 g_return_if_fail (GTK_IS_WIDGET (widget));
1427 va_start (var_args, first_property_name);
1428 g_object_set_valist (G_OBJECT (widget), first_property_name, var_args);
1433 gtk_widget_queue_clear_child (GtkWidget *widget)
1437 parent = widget->parent;
1438 if (parent && GTK_WIDGET_DRAWABLE (parent))
1439 gtk_widget_queue_clear_area (parent,
1440 widget->allocation.x,
1441 widget->allocation.y,
1442 widget->allocation.width,
1443 widget->allocation.height);
1447 * gtk_widget_unparent:
1448 * @widget: a #GtkWidget
1450 * This function is only for use in widget implementations.
1451 * Should be called by implementations of the remove method
1452 * on #GtkContainer, to dissociate a child from the container.
1455 gtk_widget_unparent (GtkWidget *widget)
1457 GObjectNotifyQueue *nqueue;
1458 GtkWidget *toplevel;
1459 GtkWidget *old_parent;
1461 g_return_if_fail (GTK_IS_WIDGET (widget));
1462 if (widget->parent == NULL)
1465 /* keep this function in sync with gtk_menu_detach()
1468 g_object_freeze_notify (G_OBJECT (widget));
1469 nqueue = g_object_notify_queue_freeze (G_OBJECT (widget), _gtk_widget_child_property_notify_context);
1471 /* unset focused and default children properly, this code
1472 * should eventually move into some gtk_window_unparent_branch() or
1476 toplevel = gtk_widget_get_toplevel (widget);
1477 if (GTK_CONTAINER (widget->parent)->focus_child == widget)
1479 gtk_container_set_focus_child (GTK_CONTAINER (widget->parent), NULL);
1481 if (GTK_WIDGET_TOPLEVEL (toplevel))
1485 child = GTK_WINDOW (toplevel)->focus_widget;
1487 while (child && child != widget)
1488 child = child->parent;
1490 if (child == widget)
1491 gtk_window_set_focus (GTK_WINDOW (toplevel), NULL);
1494 if (GTK_WIDGET_TOPLEVEL (toplevel))
1498 child = GTK_WINDOW (toplevel)->default_widget;
1500 while (child && child != widget)
1501 child = child->parent;
1503 if (child == widget)
1504 gtk_window_set_default (GTK_WINDOW (toplevel), NULL);
1507 /* If we are unanchoring the child, we save around the toplevel
1508 * to emit hierarchy changed
1510 if (GTK_WIDGET_ANCHORED (widget->parent))
1511 g_object_ref (toplevel);
1515 gtk_widget_queue_clear_child (widget);
1517 /* Reset the width and height here, to force reallocation if we
1518 * get added back to a new parent. This won't work if our new
1519 * allocation is smaller than 1x1 and we actually want a size of 1x1...
1520 * (would 0x0 be OK here?)
1522 widget->allocation.width = 1;
1523 widget->allocation.height = 1;
1525 if (GTK_WIDGET_REALIZED (widget) && !GTK_WIDGET_IN_REPARENT (widget))
1526 gtk_widget_unrealize (widget);
1528 /* Removing a widget from a container restores the child visible
1529 * flag to the default state, so it doesn't affect the child
1530 * in the next parent.
1532 GTK_PRIVATE_SET_FLAG (widget, GTK_CHILD_VISIBLE);
1534 old_parent = widget->parent;
1535 widget->parent = NULL;
1536 gtk_widget_set_parent_window (widget, NULL);
1537 gtk_signal_emit (GTK_OBJECT (widget), widget_signals[PARENT_SET], old_parent);
1540 _gtk_widget_propagate_hierarchy_changed (widget, toplevel);
1541 g_object_unref (toplevel);
1544 g_object_notify (G_OBJECT (widget), "parent");
1545 g_object_thaw_notify (G_OBJECT (widget));
1546 if (!widget->parent)
1547 g_object_notify_queue_clear (G_OBJECT (widget), nqueue);
1548 g_object_notify_queue_thaw (G_OBJECT (widget), nqueue);
1549 gtk_widget_unref (widget);
1553 * gtk_widget_destroy:
1554 * @widget: a #GtkWidget
1556 * Destroys a widget. Equivalent to gtk_object_destroy(), except that
1557 * you don't have to cast the widget to #GtkObject. When a widget is
1558 * destroyed, it will break any references it holds to other objects.
1559 * If the widget is inside a container, the widget will be removed
1560 * from the container. If the widget is a toplevel (derived from
1561 * #GtkWindow), it will be removed from the list of toplevels, and the
1562 * reference GTK+ holds to it will be removed. Removing a
1563 * widget from its container or the list of toplevels results in the
1564 * widget being finalized, unless you've added additional references
1565 * to the widget with gtk_object_ref().
1567 * In most cases, only toplevel widgets (windows) require explicit
1568 * destruction, because when you destroy a toplevel its children will
1569 * be destroyed as well.
1573 gtk_widget_destroy (GtkWidget *widget)
1575 g_return_if_fail (GTK_IS_WIDGET (widget));
1577 gtk_object_destroy ((GtkObject*) widget);
1581 * gtk_widget_destroyed:
1582 * @widget: a #GtkWidget
1583 * @widget_pointer: address of a variable that contains @widget
1585 * This function sets *@widget_pointer to %NULL if @widget_pointer !=
1586 * %NULL. It's intended to be used as a callback connected to the
1587 * "destroy" signal of a widget. You connect gtk_widget_destroyed()
1588 * as a signal handler, and pass the address of your widget variable
1589 * as user data. Then when the widget is destroyed, the variable will
1590 * be set to %NULL. Useful for example to avoid multiple copies
1591 * of the same dialog.
1595 gtk_widget_destroyed (GtkWidget *widget,
1596 GtkWidget **widget_pointer)
1598 /* Don't make any assumptions about the
1600 * Even check widget_pointer.
1603 *widget_pointer = NULL;
1608 * @widget: a #GtkWidget
1610 * Flags a widget to be displayed. Any widget that isn't shown will
1611 * not appear on the screen. If you want to show all the widgets in a
1612 * container, it's easier to call gtk_widget_show_all() on the
1613 * container, instead of individually showing the widgets.
1615 * Remember that you have to show the containers containing a widget,
1616 * in addition to the widget itself, before it will appear onscreen.
1618 * When a toplevel container is shown, it is immediately realized and
1619 * mapped; other shown widgets are realized and mapped when their
1620 * toplevel container is realized and mapped.
1624 gtk_widget_show (GtkWidget *widget)
1626 g_return_if_fail (GTK_IS_WIDGET (widget));
1628 if (!GTK_WIDGET_VISIBLE (widget))
1630 g_object_ref (G_OBJECT (widget));
1631 if (!GTK_WIDGET_TOPLEVEL (widget))
1632 gtk_widget_queue_resize (widget);
1633 gtk_signal_emit (GTK_OBJECT (widget), widget_signals[SHOW]);
1634 g_object_notify (G_OBJECT (widget), "visible");
1635 g_object_unref (G_OBJECT (widget));
1640 gtk_widget_real_show (GtkWidget *widget)
1642 if (!GTK_WIDGET_VISIBLE (widget))
1644 GTK_WIDGET_SET_FLAGS (widget, GTK_VISIBLE);
1646 if (widget->parent &&
1647 GTK_WIDGET_MAPPED (widget->parent) &&
1648 GTK_WIDGET_CHILD_VISIBLE (widget) &&
1649 !GTK_WIDGET_MAPPED (widget))
1650 gtk_widget_map (widget);
1655 gtk_widget_show_map_callback (GtkWidget *widget, GdkEvent *event, gint *flag)
1658 gtk_signal_disconnect_by_data (GTK_OBJECT (widget), flag);
1662 * gtk_widget_show_now:
1663 * @widget: a #GtkWidget
1665 * Shows a widget. If the widget is an unmapped toplevel widget
1666 * (i.e. a #GtkWindow that has not yet been shown), enter the main
1667 * loop and wait for the window to actually be mapped. Be careful;
1668 * because the main loop is running, anything can happen during
1672 gtk_widget_show_now (GtkWidget *widget)
1676 g_return_if_fail (GTK_IS_WIDGET (widget));
1678 /* make sure we will get event */
1679 if (!GTK_WIDGET_MAPPED (widget) &&
1680 GTK_WIDGET_TOPLEVEL (widget))
1682 gtk_widget_show (widget);
1684 gtk_signal_connect (GTK_OBJECT (widget), "map_event",
1685 GTK_SIGNAL_FUNC (gtk_widget_show_map_callback),
1689 gtk_main_iteration();
1692 gtk_widget_show (widget);
1697 * @widget: a #GtkWidget
1699 * Reverses the effects of gtk_widget_show(), causing the widget to be
1700 * hidden (invisible to the user).
1703 gtk_widget_hide (GtkWidget *widget)
1705 g_return_if_fail (GTK_IS_WIDGET (widget));
1707 if (GTK_WIDGET_VISIBLE (widget))
1709 gtk_widget_ref (widget);
1710 gtk_signal_emit (GTK_OBJECT (widget), widget_signals[HIDE]);
1711 if (!GTK_WIDGET_TOPLEVEL (widget))
1712 gtk_widget_queue_resize (widget);
1713 g_object_notify (G_OBJECT (widget), "visible");
1714 gtk_widget_unref (widget);
1719 gtk_widget_real_hide (GtkWidget *widget)
1721 if (GTK_WIDGET_VISIBLE (widget))
1723 GTK_WIDGET_UNSET_FLAGS (widget, GTK_VISIBLE);
1725 if (GTK_WIDGET_MAPPED (widget))
1726 gtk_widget_unmap (widget);
1731 * gtk_widget_hide_on_delete:
1732 * @widget: a #GtkWidget
1734 * Utility function; intended to be connected to the "delete_event"
1735 * signal on a #GtkWindow. The function calls gtk_widget_hide() on its
1736 * argument, then returns %TRUE. If connected to "delete_event", the
1737 * result is that clicking the close button for a window (on the
1738 * window frame, top right corner usually) will hide but not destroy
1739 * the window. By default, GTK+ destroys windows when "delete_event"
1742 * Return value: %TRUE
1745 gtk_widget_hide_on_delete (GtkWidget *widget)
1747 g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
1749 gtk_widget_hide (widget);
1755 * gtk_widget_show_all:
1756 * @widget: a #GtkWidget
1758 * Recursively shows a widget, and any child widgets (if the widget is
1762 gtk_widget_show_all (GtkWidget *widget)
1764 GtkWidgetClass *class;
1766 g_return_if_fail (GTK_IS_WIDGET (widget));
1768 class = GTK_WIDGET_GET_CLASS (widget);
1770 if (class->show_all)
1771 class->show_all (widget);
1775 * gtk_widget_hide_all:
1776 * @widget: a #GtkWidget
1778 * Recursively hides a widget and any child widgets.
1781 gtk_widget_hide_all (GtkWidget *widget)
1783 GtkWidgetClass *class;
1785 g_return_if_fail (GTK_IS_WIDGET (widget));
1787 class = GTK_WIDGET_GET_CLASS (widget);
1789 if (class->hide_all)
1790 class->hide_all (widget);
1795 * @widget: a #GtkWidget
1797 * This function is only for use in widget implementations. Causes
1798 * a widget to be mapped if it isn't already.
1802 gtk_widget_map (GtkWidget *widget)
1804 g_return_if_fail (GTK_IS_WIDGET (widget));
1805 g_return_if_fail (GTK_WIDGET_VISIBLE (widget));
1806 g_return_if_fail (GTK_WIDGET_CHILD_VISIBLE (widget));
1808 if (!GTK_WIDGET_MAPPED (widget))
1810 if (!GTK_WIDGET_REALIZED (widget))
1811 gtk_widget_realize (widget);
1813 gtk_signal_emit (GTK_OBJECT (widget), widget_signals[MAP]);
1815 if (GTK_WIDGET_NO_WINDOW (widget))
1816 gdk_window_invalidate_rect (widget->window, &widget->allocation, FALSE);
1822 * @widget: a #GtkWidget
1824 * This function is only for use in widget implementations. Causes
1825 * a widget to be unmapped if it's currently mapped.
1829 gtk_widget_unmap (GtkWidget *widget)
1831 g_return_if_fail (GTK_IS_WIDGET (widget));
1833 if (GTK_WIDGET_MAPPED (widget))
1835 if (GTK_WIDGET_NO_WINDOW (widget))
1836 gdk_window_invalidate_rect (widget->window, &widget->allocation, FALSE);
1837 gtk_signal_emit (GTK_OBJECT (widget), widget_signals[UNMAP]);
1842 * gtk_widget_realize:
1843 * @widget: a #GtkWidget
1845 * Creates the GDK (windowing system) resources associated with a
1846 * widget. For example, @widget->window will be created when a widget
1847 * is realized. Normally realization happens implicitly; if you show
1848 * a widget and all its parent containers, then the widget will be
1849 * realized and mapped automatically.
1851 * Realizing a widget requires all
1852 * the widget's parent widgets to be realized; calling
1853 * gtk_widget_realize() realizes the widget's parents in addition to
1854 * @widget itself. If a widget is not yet inside a toplevel window
1855 * when you realize it, bad things will happen.
1857 * This function is primarily used in widget implementations, and
1858 * isn't very useful otherwise. Many times when you think you might
1859 * need it, a better approach is to connect to a signal that will be
1860 * called after the widget is realized automatically, such as
1861 * "expose_event". Or simply gtk_signal_connect_after() to the
1866 gtk_widget_realize (GtkWidget *widget)
1869 GdkExtensionMode mode;
1870 GtkWidgetShapeInfo *shape_info;
1872 g_return_if_fail (GTK_IS_WIDGET (widget));
1874 if (!GTK_WIDGET_REALIZED (widget))
1877 if (GTK_IS_CONTAINER (widget) && !GTK_WIDGET_NO_WINDOW (widget))
1878 g_message ("gtk_widget_realize(%s)", gtk_type_name (GTK_WIDGET_TYPE (widget)));
1881 if (widget->parent == NULL &&
1882 !GTK_WIDGET_TOPLEVEL (widget))
1883 g_warning ("Calling gtk_widget_realize() on a widget that isn't "
1884 "inside a toplevel window is not going to work very well. "
1885 "Widgets must be inside a toplevel container before realizing them.");
1887 if (widget->parent && !GTK_WIDGET_REALIZED (widget->parent))
1888 gtk_widget_realize (widget->parent);
1890 gtk_widget_ensure_style (widget);
1892 gtk_signal_emit (GTK_OBJECT (widget), widget_signals[REALIZE]);
1894 if (GTK_WIDGET_HAS_SHAPE_MASK (widget))
1896 shape_info = gtk_object_get_data_by_id (GTK_OBJECT (widget), quark_shape_info);
1897 gdk_window_shape_combine_mask (widget->window,
1898 shape_info->shape_mask,
1899 shape_info->offset_x,
1900 shape_info->offset_y);
1903 if (!GTK_WIDGET_NO_WINDOW (widget))
1905 mode = gtk_widget_get_extension_events (widget);
1906 if (mode != GDK_EXTENSION_EVENTS_NONE)
1908 events = gtk_widget_get_events (widget);
1909 gdk_input_set_extension_events (widget->window, events, mode);
1917 * gtk_widget_unrealize:
1918 * @widget: a #GtkWidget
1920 * This function is only useful in widget implementations.
1921 * Causes a widget to be unrealized (frees all GDK resources
1922 * associated with the widget, such as @widget->window).
1926 gtk_widget_unrealize (GtkWidget *widget)
1928 g_return_if_fail (GTK_IS_WIDGET (widget));
1930 if (GTK_WIDGET_HAS_SHAPE_MASK (widget))
1931 gtk_widget_shape_combine_mask (widget, NULL, -1, -1);
1933 if (GTK_WIDGET_REALIZED (widget))
1935 gtk_widget_ref (widget);
1936 gtk_signal_emit (GTK_OBJECT (widget), widget_signals[UNREALIZE]);
1937 GTK_WIDGET_UNSET_FLAGS (widget, GTK_REALIZED | GTK_MAPPED);
1938 gtk_widget_unref (widget);
1942 /*****************************************
1944 *****************************************/
1947 * gtk_widget_queue_draw_area:
1948 * @widget: a #GtkWidget
1949 * @x: x coordinate of upper-left corner of rectangle to redraw
1950 * @y: y coordinate of upper-left corner of rectangle to redraw
1951 * @width: width of region to draw
1952 * @height: height of region to draw
1954 * Invalidates the rectangular area of @widget defined by @x, @y,
1955 * @width and @height by calling gdk_window_invalidate_rect() on the
1956 * widget's window and all its child windows. Once the main loop
1957 * becomes idle (after the current batch of events has been processed,
1958 * roughly), the window will receive expose events for the union of
1959 * all regions that have been invalidated.
1961 * Normally you would only use this function in widget
1962 * implementations. You might also use it, or
1963 * gdk_window_invalidate_rect() directly, to schedule a redraw of a
1964 * #GtkDrawingArea or some portion thereof.
1966 * Frequently you can just call gdk_window_invalidate_rect() or
1967 * gdk_window_invalidate_region() instead of this function. Those
1968 * functions will invalidate only a single window, instead of the
1969 * widget and all its children.
1971 * The advantage of adding to the invalidated region compared to
1972 * simply drawing immediately is efficiency; using an invalid region
1973 * ensures that you only have to redraw one time.
1977 gtk_widget_queue_draw_area (GtkWidget *widget,
1983 g_return_if_fail (GTK_IS_WIDGET (widget));
1985 gtk_widget_queue_clear_area (widget, x, y, width, height);
1989 * gtk_widget_queue_draw:
1990 * @widget: a #GtkWidget
1992 * Equivalent to calling gtk_widget_queue_draw_area() for the
1993 * entire area of a widget.
1997 gtk_widget_queue_draw (GtkWidget *widget)
1999 g_return_if_fail (GTK_IS_WIDGET (widget));
2001 gtk_widget_queue_clear (widget);
2004 /* Invalidates the given area (allocation-relative-coordinates)
2005 * in all of the widget's windows
2008 * gtk_widget_queue_clear_area:
2009 * @widget: a #GtkWidget
2010 * @x: x coordinate of upper-left corner of rectangle to redraw
2011 * @y: y coordinate of upper-left corner of rectangle to redraw
2012 * @width: width of region to draw
2013 * @height: height of region to draw
2015 * DEPRECATED. This function is no longer different from
2016 * gtk_widget_queue_draw_area(), though it once was. Now it just calls
2017 * gtk_widget_queue_draw_area(). Originally
2018 * gtk_widget_queue_clear_area() would force a redraw of the
2019 * background for %GTK_NO_WINDOW widgets, and
2020 * gtk_widget_queue_draw_area() would not. Now both functions ensure
2021 * the background will be redrawn.
2025 gtk_widget_queue_clear_area (GtkWidget *widget,
2031 GdkRectangle invalid_rect;
2033 g_return_if_fail (GTK_IS_WIDGET (widget));
2035 if (!(widget->window && gdk_window_is_viewable (widget->window)))
2038 /* Find the correct widget */
2040 if (!GTK_WIDGET_NO_WINDOW (widget))
2044 /* Translate widget relative to window-relative */
2046 gint wx, wy, wwidth, wheight;
2048 gdk_window_get_position (widget->window, &wx, &wy);
2049 x -= wx - widget->allocation.x;
2050 y -= wy - widget->allocation.y;
2052 gdk_window_get_size (widget->window, &wwidth, &wheight);
2054 if (x + width <= 0 || y + height <= 0 ||
2055 x >= wwidth || y >= wheight)
2066 if (x + width > wwidth)
2068 if (y + height > wheight)
2069 height = wheight - y;
2075 invalid_rect.width = width;
2076 invalid_rect.height = height;
2078 gdk_window_invalidate_rect (widget->window, &invalid_rect, TRUE);
2082 * gtk_widget_queue_clear:
2083 * @widget: a #GtkWidget
2085 * DEPRECATED. Use gtk_widget_queue_draw() instead.
2088 gtk_widget_queue_clear (GtkWidget *widget)
2090 g_return_if_fail (GTK_IS_WIDGET (widget));
2092 if (widget->allocation.width || widget->allocation.height)
2094 if (GTK_WIDGET_NO_WINDOW (widget))
2095 gtk_widget_queue_clear_area (widget, widget->allocation.x,
2096 widget->allocation.y,
2097 widget->allocation.width,
2098 widget->allocation.height);
2100 gtk_widget_queue_clear_area (widget, 0, 0,
2101 widget->allocation.width,
2102 widget->allocation.height);
2107 * gtk_widget_queue_resize:
2108 * @widget: a #GtkWidget
2110 * This function is only for use in widget implementations.
2111 * Flags a widget to have its size renegotiated; should
2112 * be called when a widget for some reason has a new size request.
2113 * For example, when you change the text in a #GtkLabel, #GtkLabel
2114 * queues a resize to ensure there's enough space for the new text.
2118 gtk_widget_queue_resize (GtkWidget *widget)
2122 g_return_if_fail (GTK_IS_WIDGET (widget));
2124 if (GTK_WIDGET_REALIZED (widget))
2126 region = gdk_region_rectangle (&widget->allocation);
2127 gtk_widget_invalidate_widget_windows (widget, region);
2128 gdk_region_destroy (region);
2131 _gtk_size_group_queue_resize (widget);
2136 * @widget: a #GtkWidget
2137 * @area: area to draw
2139 * DEPRECATED. In GTK+ 1.2, this function would immediately render the
2140 * region @area of a widget, by invoking the virtual draw method of a
2141 * widget. In GTK+ 2.0, the draw method is gone, and instead
2142 * gtk_widget_draw() simply invalidates the specified region of the
2143 * widget, then updates the invalid region of the widget immediately.
2144 * Usually you don't want to update the region immediately for
2145 * performance reasons, so in general gtk_widget_queue_draw_area() is
2146 * a better choice if you want to draw a region of a widget.
2150 gtk_widget_draw (GtkWidget *widget,
2153 g_return_if_fail (GTK_IS_WIDGET (widget));
2155 if (GTK_WIDGET_DRAWABLE (widget))
2158 gtk_widget_queue_draw_area (widget,
2160 area->width, area->height);
2162 gtk_widget_queue_draw (widget);
2164 gdk_window_process_updates (widget->window, TRUE);
2169 * gtk_widget_size_request:
2170 * @widget: a #GtkWidget
2171 * @requisition: a #GtkRequisition to be filled in
2173 * This function is typically used when implementing a #GtkContainer
2174 * subclass. Obtains the preferred size of a widget. The container
2175 * uses this information to arrange its child widgets and decide what
2176 * size allocations to give them with gtk_widget_size_allocate().
2178 * You can also call this function from an application, with some
2179 * caveats. Most notably, getting a size request requires the widget
2180 * to be associated with a screen, because font information may be
2181 * needed. Multihead-aware applications should keep this in mind.
2183 * Also remember that the size request is not necessarily the size
2184 * a widget will actually be allocated.
2186 * See also gtk_widget_get_child_requisition().
2189 gtk_widget_size_request (GtkWidget *widget,
2190 GtkRequisition *requisition)
2192 g_return_if_fail (GTK_IS_WIDGET (widget));
2194 #ifdef G_ENABLE_DEBUG
2195 if (requisition == &widget->requisition)
2196 g_warning ("gtk_widget_size_request() called on child widget with request equal\n to widget->requisition. gtk_widget_set_usize() may not work properly.");
2197 #endif /* G_ENABLE_DEBUG */
2199 _gtk_size_group_compute_requisition (widget, requisition);
2203 * gtk_widget_get_child_requisition:
2204 * @widget: a #GtkWidget
2205 * @requisition: a #GtkRequisition to be filled in
2207 * This function is only for use in widget implementations. Obtains
2208 * @widget->requisition, unless someone has forced a particular
2209 * geometry on the widget (e.g. with gtk_widget_set_usize()), in which
2210 * case it returns that geometry instead of the widget's requisition.
2212 * This function differs from gtk_widget_size_request() in that
2213 * it retrieves the last size request value from @widget->requisition,
2214 * while gtk_widget_size_request() actually calls the "size_request" method
2215 * on @widget to compute the size request and fill in @widget->requisition,
2216 * and only then returns @widget->requisition.
2218 * Because this function does not call the "size_request" method, it
2219 * can only be used when you know that @widget->requisition is
2220 * up-to-date, that is, gtk_widget_size_request() has been called
2221 * since the last time a resize was queued. In general, only container
2222 * implementations have this information; applications should use
2223 * gtk_widget_size_request().
2226 gtk_widget_get_child_requisition (GtkWidget *widget,
2227 GtkRequisition *requisition)
2229 _gtk_size_group_get_child_requisition (widget, requisition);
2233 invalidate_predicate (GdkWindow *window,
2238 gdk_window_get_user_data (window, &user_data);
2240 return (user_data == data);
2243 /* Invalidate @region in widget->window and all children
2244 * of widget->window owned by widget. @region is in the
2245 * same coordinates as widget->allocation and will be
2246 * modified by this call.
2249 gtk_widget_invalidate_widget_windows (GtkWidget *widget,
2252 if (!GTK_WIDGET_NO_WINDOW (widget))
2256 gdk_window_get_position (widget->window, &x, &y);
2257 gdk_region_offset (region, -x, -y);
2260 gdk_window_invalidate_maybe_recurse (widget->window, region,
2261 invalidate_predicate, widget);
2265 * gtk_widget_size_allocate:
2266 * @widget: a #GtkWidget
2267 * @allocation: position and size to be allocated to @widget
2269 * This function is only used by #GtkContainer subclasses, to assign a size
2270 * and position to their child widgets.
2274 gtk_widget_size_allocate (GtkWidget *widget,
2275 GtkAllocation *allocation)
2277 GtkWidgetAuxInfo *aux_info;
2278 GdkRectangle real_allocation;
2279 GdkRectangle old_allocation;
2280 gboolean alloc_needed;
2281 gboolean size_changed;
2282 gboolean position_changed;
2284 g_return_if_fail (GTK_IS_WIDGET (widget));
2286 alloc_needed = GTK_WIDGET_ALLOC_NEEDED (widget);
2287 GTK_PRIVATE_UNSET_FLAG (widget, GTK_ALLOC_NEEDED);
2289 old_allocation = widget->allocation;
2290 real_allocation = *allocation;
2291 aux_info =_gtk_widget_get_aux_info (widget, FALSE);
2295 if (aux_info->x_set)
2296 real_allocation.x = aux_info->x;
2297 if (aux_info->y_set)
2298 real_allocation.y = aux_info->y;
2301 if (real_allocation.width < 0 || real_allocation.height < 0)
2303 g_warning ("gtk_widget_size_allocate(): attempt to allocate widget with width %d and height %d",
2304 real_allocation.width,
2305 real_allocation.height);
2308 real_allocation.width = MAX (real_allocation.width, 1);
2309 real_allocation.height = MAX (real_allocation.height, 1);
2311 size_changed = (old_allocation.width != real_allocation.width ||
2312 old_allocation.height != real_allocation.height);
2313 position_changed = (old_allocation.x != real_allocation.x ||
2314 old_allocation.y != real_allocation.y);
2316 if (!alloc_needed && !size_changed && !position_changed)
2319 gtk_signal_emit (GTK_OBJECT (widget), widget_signals[SIZE_ALLOCATE], &real_allocation);
2321 if (GTK_WIDGET_MAPPED (widget))
2323 if (GTK_WIDGET_NO_WINDOW (widget) && GTK_WIDGET_REDRAW_ON_ALLOC (widget) && position_changed)
2325 /* Invalidate union(old_allaction,widget->allocation) in widget->window
2327 GdkRegion *invalidate = gdk_region_rectangle (&widget->allocation);
2328 gdk_region_union_with_rect (invalidate, &old_allocation);
2330 gdk_window_invalidate_region (widget->window, invalidate, FALSE);
2331 gdk_region_destroy (invalidate);
2336 if (GTK_WIDGET_REDRAW_ON_ALLOC (widget))
2338 /* Invalidate union(old_allaction,widget->allocation) in widget->window and descendents owned by widget
2340 GdkRegion *invalidate = gdk_region_rectangle (&widget->allocation);
2341 gdk_region_union_with_rect (invalidate, &old_allocation);
2343 gtk_widget_invalidate_widget_windows (widget, invalidate);
2344 gdk_region_destroy (invalidate);
2349 if ((size_changed || position_changed) && widget->parent &&
2350 GTK_WIDGET_REALIZED (widget->parent) && GTK_CONTAINER (widget->parent)->reallocate_redraws)
2352 GdkRegion *invalidate = gdk_region_rectangle (&widget->parent->allocation);
2353 gtk_widget_invalidate_widget_windows (widget->parent, invalidate);
2354 gdk_region_destroy (invalidate);
2359 * gtk_widget_common_ancestor:
2360 * @widget_a: a #GtkWidget
2361 * @widget_b: a #GtkWidget
2363 * Find the common ancestor of @widget_a and @widget_b that
2364 * is closest to the two widgets.
2366 * Return value: the closest common ancestor of @widget_a and
2367 * @widget_b or %NULL if @widget_a and @widget_b do not
2368 * share a common ancestor.
2371 gtk_widget_common_ancestor (GtkWidget *widget_a,
2372 GtkWidget *widget_b)
2374 GtkWidget *parent_a;
2375 GtkWidget *parent_b;
2379 parent_a = widget_a;
2380 while (parent_a->parent)
2382 parent_a = parent_a->parent;
2386 parent_b = widget_b;
2387 while (parent_b->parent)
2389 parent_b = parent_b->parent;
2393 if (parent_a != parent_b)
2396 while (depth_a > depth_b)
2398 widget_a = widget_a->parent;
2402 while (depth_b > depth_a)
2404 widget_b = widget_b->parent;
2408 while (widget_a != widget_b)
2410 widget_a = widget_a->parent;
2411 widget_b = widget_b->parent;
2418 * gtk_widget_translate_coordinates:
2419 * @src_widget: a #GtkWidget
2420 * @dest_widget: a #GtkWidget
2421 * @src_x: X position relative to @src_widget
2422 * @src_y: Y position relative to @src_widget
2423 * @dest_x: location to store X position relative to @dest_widget
2424 * @dest_y: location to store Y position relative to @dest_widget
2426 * Translate coordinates relative to @src_widget's allocation to coordinates
2427 * relative to @dest_widget's allocations. In order to perform this
2428 * operation, both widgets must be realized, and must share a common
2431 * Return value: %FALSE if either widget was not realized, or there
2432 * was no common ancestor. In this case, nothing is stored in
2433 * *@dest_x and *@dest_y. Otherwise %TRUE.
2436 gtk_widget_translate_coordinates (GtkWidget *src_widget,
2437 GtkWidget *dest_widget,
2443 GtkWidget *ancestor;
2446 g_return_val_if_fail (GTK_IS_WIDGET (src_widget), FALSE);
2447 g_return_val_if_fail (GTK_IS_WIDGET (dest_widget), FALSE);
2449 ancestor = gtk_widget_common_ancestor (src_widget, dest_widget);
2450 if (!ancestor || !GTK_WIDGET_REALIZED (src_widget) || !GTK_WIDGET_REALIZED (dest_widget))
2453 /* Translate from allocation relative to window relative */
2454 if (!GTK_WIDGET_NO_WINDOW (src_widget) && src_widget->parent)
2457 gdk_window_get_position (src_widget->window, &wx, &wy);
2459 src_x -= wx - src_widget->allocation.x;
2460 src_y -= wy - src_widget->allocation.y;
2464 src_x += src_widget->allocation.x;
2465 src_y += src_widget->allocation.y;
2468 /* Translate to the common ancestor */
2469 window = src_widget->window;
2470 while (window != ancestor->window)
2474 gdk_window_get_position (window, &dx, &dy);
2479 window = gdk_window_get_parent (window);
2483 window = dest_widget->window;
2484 while (window != ancestor->window)
2488 gdk_window_get_position (window, &dx, &dy);
2493 window = gdk_window_get_parent (window);
2496 /* Translate from window relative to allocation relative */
2497 if (!GTK_WIDGET_NO_WINDOW (dest_widget) && dest_widget->parent)
2500 gdk_window_get_position (dest_widget->window, &wx, &wy);
2502 src_x += wx - dest_widget->allocation.x;
2503 src_y += wy - dest_widget->allocation.y;
2507 src_x -= dest_widget->allocation.x;
2508 src_y -= dest_widget->allocation.y;
2520 gtk_widget_real_size_allocate (GtkWidget *widget,
2521 GtkAllocation *allocation)
2523 widget->allocation = *allocation;
2525 if (GTK_WIDGET_REALIZED (widget) &&
2526 !GTK_WIDGET_NO_WINDOW (widget))
2528 gdk_window_move_resize (widget->window,
2529 allocation->x, allocation->y,
2530 allocation->width, allocation->height);
2540 closure_accel_activate (GClosure *closure,
2541 GValue *return_value,
2542 guint n_param_values,
2543 const GValue *param_values,
2544 gpointer invocation_hint,
2545 gpointer marshal_data)
2547 AccelClosure *aclosure = (AccelClosure*) closure;
2549 if (GTK_WIDGET_IS_SENSITIVE (closure->data))
2550 g_signal_emit (closure->data, aclosure->signal_id, 0);
2552 /* we handled the accelerator */
2553 g_value_set_boolean (return_value, TRUE);
2557 closures_destroy (gpointer data)
2559 GSList *slist, *closures = data;
2561 for (slist = closures; slist; slist = slist->next)
2563 g_closure_invalidate (slist->data);
2564 g_closure_unref (slist->data);
2566 g_slist_free (closures);
2570 widget_new_accel_closure (GtkWidget *widget,
2573 AccelClosure *aclosure;
2574 GClosure *closure = NULL;
2575 GSList *slist, *closures;
2577 closures = g_object_steal_qdata (G_OBJECT (widget), quark_accel_closures);
2578 for (slist = closures; slist; slist = slist->next)
2579 if (!gtk_accel_group_from_accel_closure (slist->data))
2581 /* reuse this closure */
2582 closure = slist->data;
2587 closure = g_closure_new_object (sizeof (AccelClosure), G_OBJECT (widget));
2588 closures = g_slist_prepend (closures, g_closure_ref (closure));
2589 g_closure_sink (closure);
2590 g_closure_set_marshal (closure, closure_accel_activate);
2592 g_object_set_qdata_full (G_OBJECT (widget), quark_accel_closures, closures, closures_destroy);
2594 aclosure = (AccelClosure*) closure;
2595 g_assert (closure->data == widget);
2596 g_assert (closure->marshal == closure_accel_activate);
2597 aclosure->signal_id = signal_id;
2603 * gtk_widget_add_accelerator
2604 * @widget: widget to install an accelerator on
2605 * @accel_signal: widget signal to emit on accelerator activation
2606 * @accel_group: accel group for this widget, added to its toplevel
2607 * @accel_key: GDK keyval of the accelerator
2608 * @accel_mods: modifier key combination of the accelerator
2609 * @accel_flags: flag accelerators, e.g. %GTK_ACCEL_VISIBLE
2611 * Installs an accelerator for this @widget in @accel_group that causes
2612 * @accel_signal to be emitted if the accelerator is activated.
2613 * The @accel_group needs to be added to the widget's toplevel via
2614 * gtk_window_add_accel_group(), and the signal must be of type %G_RUN_ACTION.
2615 * Accelerators added through this function are not user changeable during
2616 * runtime. If you want to support accelerators that can be changed by the
2617 * user, use gtk_accel_map_add_entry() and gtk_widget_set_accel_path() or
2618 * gtk_menu_item_set_accel_path() instead.
2621 gtk_widget_add_accelerator (GtkWidget *widget,
2622 const gchar *accel_signal,
2623 GtkAccelGroup *accel_group,
2625 GdkModifierType accel_mods,
2626 GtkAccelFlags accel_flags)
2631 g_return_if_fail (GTK_IS_WIDGET (widget));
2632 g_return_if_fail (accel_signal != NULL);
2633 g_return_if_fail (GTK_IS_ACCEL_GROUP (accel_group));
2635 g_signal_query (g_signal_lookup (accel_signal, G_OBJECT_TYPE (widget)), &query);
2636 if (!query.signal_id ||
2637 !(query.signal_flags & G_SIGNAL_ACTION) ||
2638 query.return_type != G_TYPE_NONE ||
2641 /* hmm, should be elaborate enough */
2642 g_warning (G_STRLOC ": widget `%s' has no activatable signal \"%s\" without arguments",
2643 G_OBJECT_TYPE_NAME (widget), accel_signal);
2647 closure = widget_new_accel_closure (widget, query.signal_id);
2649 g_object_ref (widget);
2651 /* install the accelerator. since we don't map this onto an accel_path,
2652 * the accelerator will automatically be locked.
2654 gtk_accel_group_connect (accel_group,
2657 accel_flags | GTK_ACCEL_LOCKED,
2660 g_signal_emit (widget, widget_signals[ACCEL_CLOSURES_CHANGED], 0);
2662 g_object_unref (widget);
2666 * gtk_widget_remove_accelerator:
2667 * @widget: widget to install an accelerator on
2668 * @accel_group: accel group for this widget
2669 * @accel_key: GDK keyval of the accelerator
2670 * @accel_mods: modifier key combination of the accelerator
2671 * @returns: whether an accelerator was installed and could be removed
2673 * Removes an accelerator from @widget, previously installed with
2674 * gtk_widget_add_accelerator().
2677 gtk_widget_remove_accelerator (GtkWidget *widget,
2678 GtkAccelGroup *accel_group,
2680 GdkModifierType accel_mods)
2682 GtkAccelGroupEntry *ag_entry;
2683 GList *slist, *clist;
2686 g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
2687 g_return_val_if_fail (GTK_IS_ACCEL_GROUP (accel_group), FALSE);
2689 ag_entry = gtk_accel_group_query (accel_group, accel_key, accel_mods, &n);
2690 clist = gtk_widget_list_accel_closures (widget);
2691 for (slist = clist; slist; slist = slist->next)
2695 for (i = 0; i < n; i++)
2696 if (slist->data == (gpointer) ag_entry[i].closure)
2698 gboolean is_removed = gtk_accel_group_disconnect (accel_group, slist->data);
2700 g_signal_emit (widget, widget_signals[ACCEL_CLOSURES_CHANGED], 0);
2702 g_list_free (clist);
2707 g_list_free (clist);
2709 g_warning (G_STRLOC ": no accelerator (%u,%u) installed in accel group (%p) for %s (%p)",
2710 accel_key, accel_mods, accel_group,
2711 G_OBJECT_TYPE_NAME (widget), widget);
2717 * gtk_widget_list_accel_closures
2718 * @widget: widget to list accelerator closures for
2719 * @returns: a newly allocated #GList of closures
2721 * Lists the closures used by @widget for accelerator group connections
2722 * with gtk_accel_group_connect_by_path() or gtk_accel_group_connect().
2723 * The closures can be used to monitor accelerator changes on @widget,
2724 * by connecting to the ::accel_changed signal of the #GtkAccelGroup of a
2725 * closure which can be found out with gtk_accel_group_from_accel_closure().
2728 gtk_widget_list_accel_closures (GtkWidget *widget)
2731 GList *clist = NULL;
2733 g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
2735 for (slist = g_object_get_qdata (G_OBJECT (widget), quark_accel_closures); slist; slist = slist->next)
2736 if (gtk_accel_group_from_accel_closure (slist->data))
2737 clist = g_list_prepend (clist, slist->data);
2744 GtkAccelGroup *accel_group;
2749 destroy_accel_path (gpointer data)
2751 AccelPath *apath = data;
2753 gtk_accel_group_disconnect (apath->accel_group, apath->closure);
2755 /* closures_destroy takes care of unrefing the closure */
2756 g_object_unref (apath->accel_group);
2763 * gtk_widget_set_accel_path:
2764 * @widget: a #GtkWidget
2765 * @accel_path: path used to look up the the accelerator
2766 * @accel_group: a #GtkAccelGroup.
2768 * Given an accelerator group, @accel_group, and an accelerator path,
2769 * @accel_path, sets up an accelerator in @accel_group so whenever the
2770 * key binding that is defined for @accel_path is pressed, @widget
2771 * will be activated. This removes any accelerators (for any
2772 * accelerator group) installed by previous calls to
2773 * gtk_widget_set_accel_path(). Associating accelerators with
2774 * paths allows them to be modified by the user and the modifications
2775 * to be saved for future use. (See gtk_accel_map_save().)
2777 * This function is a low level function that would most likely
2778 * be used by a menu creation system like #GtkItemFactory. If you
2779 * use #GtkItemFactory, setting up accelerator paths will be done
2782 * Even when you you aren't using #GtkItemFactory, if you only want to
2783 * set up accelerators on menu items gtk_menu_item_set_accel_path()
2784 * provides a somewhat more convenient interface.
2787 gtk_widget_set_accel_path (GtkWidget *widget,
2788 const gchar *accel_path,
2789 GtkAccelGroup *accel_group)
2793 g_return_if_fail (GTK_IS_WIDGET (widget));
2794 g_return_if_fail (GTK_WIDGET_GET_CLASS (widget)->activate_signal != 0);
2798 g_return_if_fail (GTK_IS_ACCEL_GROUP (accel_group));
2799 g_return_if_fail (_gtk_accel_path_is_valid (accel_path));
2801 gtk_accel_map_add_entry (accel_path, 0, 0);
2802 apath = g_new (AccelPath, 1);
2803 apath->widget = widget;
2804 apath->accel_group = g_object_ref (accel_group);
2805 apath->path_quark = g_quark_from_string (accel_path);
2806 apath->closure = widget_new_accel_closure (apath->widget, GTK_WIDGET_GET_CLASS (apath->widget)->activate_signal);
2811 /* also removes possible old settings */
2812 g_object_set_qdata_full (G_OBJECT (widget), quark_accel_path, apath, destroy_accel_path);
2815 gtk_accel_group_connect_by_path (apath->accel_group, g_quark_to_string (apath->path_quark), apath->closure);
2817 g_signal_emit (widget, widget_signals[ACCEL_CLOSURES_CHANGED], 0);
2821 _gtk_widget_get_accel_path (GtkWidget *widget)
2825 g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
2827 apath = g_object_get_qdata (G_OBJECT (widget), quark_accel_path);
2828 return apath ? g_quark_to_string (apath->path_quark) : NULL;
2832 gtk_widget_mnemonic_activate (GtkWidget *widget,
2833 gboolean group_cycling)
2837 g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
2839 group_cycling = group_cycling != FALSE;
2840 if (!GTK_WIDGET_IS_SENSITIVE (widget))
2843 gtk_signal_emit (GTK_OBJECT (widget),
2844 widget_signals[MNEMONIC_ACTIVATE],
2851 gtk_widget_real_mnemonic_activate (GtkWidget *widget,
2852 gboolean group_cycling)
2854 if (!group_cycling && GTK_WIDGET_GET_CLASS (widget)->activate_signal)
2855 gtk_widget_activate (widget);
2856 else if (GTK_WIDGET_CAN_FOCUS (widget))
2857 gtk_widget_grab_focus (widget);
2860 g_warning ("widget `%s' isn't suitable for mnemonic activation",
2861 G_OBJECT_TYPE_NAME (widget));
2868 gtk_widget_real_key_press_event (GtkWidget *widget,
2871 return _gtk_bindings_activate_event (GTK_OBJECT (widget), event);
2875 gtk_widget_real_key_release_event (GtkWidget *widget,
2878 return _gtk_bindings_activate_event (GTK_OBJECT (widget), event);
2882 gtk_widget_real_focus_in_event (GtkWidget *widget,
2883 GdkEventFocus *event)
2885 gtk_widget_queue_draw (widget);
2891 gtk_widget_real_focus_out_event (GtkWidget *widget,
2892 GdkEventFocus *event)
2894 gtk_widget_queue_draw (widget);
2899 #define WIDGET_REALIZED_FOR_EVENT(widget, event) \
2900 (event->type == GDK_FOCUS_CHANGE || GTK_WIDGET_REALIZED(widget))
2904 * @widget: a #GtkWidget
2905 * @event: a #GdkEvent
2907 * Rarely-used function. This function is used to emit
2908 * the event signals on a widget (those signals should never
2909 * be emitted without using this function to do so).
2910 * If you want to synthesize an event though, don't use this function;
2911 * instead, use gtk_main_do_event() so the event will behave as if
2912 * it were in the event queue. Don't synthesize expose events; instead,
2913 * use gdk_window_invalidate_rect() to invalidate a region of the
2916 * Return value: return from the event signal emission (%TRUE if the event was handled)
2919 gtk_widget_event (GtkWidget *widget,
2922 g_return_val_if_fail (GTK_IS_WIDGET (widget), TRUE);
2923 g_return_val_if_fail (WIDGET_REALIZED_FOR_EVENT (widget, event), TRUE);
2925 if (event->type == GDK_EXPOSE)
2927 g_warning ("Events of type GDK_EXPOSE cannot be synthesized. To get "
2928 "the same effect, call gdk_window_invalidate_rect/region(), "
2929 "followed by gdk_window_process_updates().");
2933 return gtk_widget_event_internal (widget, event);
2938 * gtk_widget_send_expose:
2939 * @widget: a #GtkWidget
2940 * @event: a expose #GdkEvent
2942 * Very rarely-used function. This function is used to emit
2943 * an expose event signals on a widget. This function is not
2944 * normally used directly. The only time it is used is when
2945 * propagating an expose event to a child %NO_WINDOW widget, and
2946 * that is normally done using gtk_container_propagate_expose().
2948 * If you want to force an area of a window to be redrawn,
2949 * use gdk_window_invalidate_rect() or gdk_window_invalidate_region().
2950 * To cause the redraw to be done immediately, follow that call
2951 * with a call to gdk_window_process_updates().
2953 * Return value: return from the event signal emission (%TRUE if the event was handled)
2956 gtk_widget_send_expose (GtkWidget *widget,
2959 g_return_val_if_fail (GTK_IS_WIDGET (widget), TRUE);
2960 g_return_val_if_fail (GTK_WIDGET_REALIZED (widget), TRUE);
2961 g_return_val_if_fail (event != NULL, TRUE);
2962 g_return_val_if_fail (event->type == GDK_EXPOSE, TRUE);
2964 if (event->type != GDK_EXPOSE)
2967 return gtk_widget_event_internal (widget, event);
2971 gtk_widget_event_internal (GtkWidget *widget,
2974 gboolean return_val = FALSE;
2976 gtk_widget_ref (widget);
2978 gtk_signal_emit (GTK_OBJECT (widget), widget_signals[EVENT], event, &return_val);
2979 return_val |= !WIDGET_REALIZED_FOR_EVENT (widget, event);
2984 switch (event->type)
2989 case GDK_BUTTON_PRESS:
2990 case GDK_2BUTTON_PRESS:
2991 case GDK_3BUTTON_PRESS:
2992 signal_num = BUTTON_PRESS_EVENT;
2995 signal_num = SCROLL_EVENT;
2997 case GDK_BUTTON_RELEASE:
2998 signal_num = BUTTON_RELEASE_EVENT;
3000 case GDK_MOTION_NOTIFY:
3001 signal_num = MOTION_NOTIFY_EVENT;
3004 signal_num = DELETE_EVENT;
3007 signal_num = DESTROY_EVENT;
3010 signal_num = KEY_PRESS_EVENT;
3012 case GDK_KEY_RELEASE:
3013 signal_num = KEY_RELEASE_EVENT;
3015 case GDK_ENTER_NOTIFY:
3016 signal_num = ENTER_NOTIFY_EVENT;
3018 case GDK_LEAVE_NOTIFY:
3019 signal_num = LEAVE_NOTIFY_EVENT;
3021 case GDK_FOCUS_CHANGE:
3022 signal_num = event->focus_change.in ? FOCUS_IN_EVENT : FOCUS_OUT_EVENT;
3025 signal_num = CONFIGURE_EVENT;
3028 signal_num = MAP_EVENT;
3031 signal_num = UNMAP_EVENT;
3033 case GDK_WINDOW_STATE:
3034 signal_num = WINDOW_STATE_EVENT;
3036 case GDK_PROPERTY_NOTIFY:
3037 signal_num = PROPERTY_NOTIFY_EVENT;
3039 case GDK_SELECTION_CLEAR:
3040 signal_num = SELECTION_CLEAR_EVENT;
3042 case GDK_SELECTION_REQUEST:
3043 signal_num = SELECTION_REQUEST_EVENT;
3045 case GDK_SELECTION_NOTIFY:
3046 signal_num = SELECTION_NOTIFY_EVENT;
3048 case GDK_PROXIMITY_IN:
3049 signal_num = PROXIMITY_IN_EVENT;
3051 case GDK_PROXIMITY_OUT:
3052 signal_num = PROXIMITY_OUT_EVENT;
3055 signal_num = NO_EXPOSE_EVENT;
3057 case GDK_CLIENT_EVENT:
3058 signal_num = CLIENT_EVENT;
3061 signal_num = EXPOSE_EVENT;
3063 case GDK_VISIBILITY_NOTIFY:
3064 signal_num = VISIBILITY_NOTIFY_EVENT;
3067 g_warning ("gtk_widget_event(): unhandled event type: %d", event->type);
3071 if (signal_num != -1)
3072 gtk_signal_emit (GTK_OBJECT (widget), widget_signals[signal_num], event, &return_val);
3074 if (WIDGET_REALIZED_FOR_EVENT (widget, event))
3075 gtk_signal_emit (GTK_OBJECT (widget), widget_signals[EVENT_AFTER], event);
3079 gtk_widget_unref (widget);
3085 * gtk_widget_activate:
3086 * @widget: a #GtkWidget that's activatable
3088 * For widgets that can be "activated" (buttons, menu items, etc.)
3089 * this function activates them. Activation is what happens when you
3090 * press Enter on a widget during key navigation; clicking a button,
3091 * selecting a menu item, etc. If @widget isn't activatable,
3092 * the function returns %FALSE.
3094 * Return value: %TRUE if the widget was activatable
3097 gtk_widget_activate (GtkWidget *widget)
3099 g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
3101 if (WIDGET_CLASS (widget)->activate_signal)
3103 /* FIXME: we should eventually check the signals signature here */
3104 gtk_signal_emit (GTK_OBJECT (widget), WIDGET_CLASS (widget)->activate_signal);
3113 * gtk_widget_set_scroll_adjustments:
3114 * @widget: a #GtkWidget
3115 * @hadjustment: an adjustment for horizontal scrolling, or %NULL
3116 * @vadjustment: an adjustment for vertical scrolling, or %NULL
3118 * For widgets that support scrolling, sets the scroll adjustments and
3119 * returns %TRUE. For widgets that don't support scrolling, does
3120 * nothing and returns %FALSE. Widgets that don't support scrolling
3121 * can be scrolled by placing them in a #GtkViewport, which does
3122 * support scrolling.
3124 * Return value: %TRUE if the widget supports scrolling
3127 gtk_widget_set_scroll_adjustments (GtkWidget *widget,
3128 GtkAdjustment *hadjustment,
3129 GtkAdjustment *vadjustment)
3131 g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
3133 g_return_val_if_fail (GTK_IS_ADJUSTMENT (hadjustment), FALSE);
3135 g_return_val_if_fail (GTK_IS_ADJUSTMENT (vadjustment), FALSE);
3137 if (WIDGET_CLASS (widget)->set_scroll_adjustments_signal)
3139 /* FIXME: we should eventually check the signals signature here */
3140 gtk_signal_emit (GTK_OBJECT (widget),
3141 WIDGET_CLASS (widget)->set_scroll_adjustments_signal,
3142 hadjustment, vadjustment);
3149 /*****************************************
3150 * gtk_widget_reparent_container_child:
3151 * assistent function to gtk_widget_reparent
3156 *****************************************/
3159 gtk_widget_reparent_container_child (GtkWidget *widget,
3160 gpointer client_data)
3162 g_return_if_fail (client_data != NULL);
3164 if (GTK_WIDGET_NO_WINDOW (widget))
3167 gdk_window_unref (widget->window);
3168 widget->window = (GdkWindow*) client_data;
3170 gdk_window_ref (widget->window);
3172 if (GTK_IS_CONTAINER (widget))
3173 gtk_container_forall (GTK_CONTAINER (widget),
3174 gtk_widget_reparent_container_child,
3178 gdk_window_reparent (widget->window,
3179 (GdkWindow*) client_data, 0, 0);
3183 * gtk_widget_reparent:
3184 * @widget: a #GtkWidget
3185 * @new_parent: a #GtkContainer to move the widget into
3187 * Moves a widget from one #GtkContainer to another, handling reference
3188 * count issues to avoid destroying the widget.
3192 gtk_widget_reparent (GtkWidget *widget,
3193 GtkWidget *new_parent)
3195 g_return_if_fail (GTK_IS_WIDGET (widget));
3196 g_return_if_fail (GTK_IS_CONTAINER (new_parent));
3197 g_return_if_fail (widget->parent != NULL);
3199 if (widget->parent != new_parent)
3201 /* First try to see if we can get away without unrealizing
3202 * the widget as we reparent it. if so we set a flag so
3203 * that gtk_widget_unparent doesn't unrealize widget
3205 if (GTK_WIDGET_REALIZED (widget) && GTK_WIDGET_REALIZED (new_parent))
3206 GTK_PRIVATE_SET_FLAG (widget, GTK_IN_REPARENT);
3208 gtk_widget_ref (widget);
3209 gtk_container_remove (GTK_CONTAINER (widget->parent), widget);
3210 gtk_container_add (GTK_CONTAINER (new_parent), widget);
3211 gtk_widget_unref (widget);
3213 if (GTK_WIDGET_IN_REPARENT (widget))
3215 GTK_PRIVATE_UNSET_FLAG (widget, GTK_IN_REPARENT);
3217 gtk_widget_reparent_container_child (widget,
3218 gtk_widget_get_parent_window (widget));
3221 g_object_notify (G_OBJECT (widget), "parent");
3226 * gtk_widget_intersect:
3227 * @widget: a #GtkWidget
3228 * @area: a rectangle
3229 * @intersection: rectangle to store intersection of @widget and @area
3231 * Computes the intersection of a @widget's area and @area, storing
3232 * the intersection in @intersection, and returns %TRUE if there was
3233 * an intersection. @intersection may be %NULL if you're only
3234 * interested in whether there was an intersection.
3236 * Return value: %TRUE if there was an intersection
3239 gtk_widget_intersect (GtkWidget *widget,
3241 GdkRectangle *intersection)
3247 g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
3248 g_return_val_if_fail (area != NULL, FALSE);
3251 dest = intersection;
3255 return_val = gdk_rectangle_intersect (&widget->allocation, area, dest);
3257 if (return_val && intersection && !GTK_WIDGET_NO_WINDOW (widget))
3259 intersection->x -= widget->allocation.x;
3260 intersection->y -= widget->allocation.y;
3267 * gtk_widget_region_intersect:
3268 * @widget: a #GtkWidget
3269 * @region: a #GdkRegion, in the same coordinate system as
3270 * @widget->allocation. That is, relative to @widget->window
3271 * for %NO_WINDOW widgets; relative to the parent window
3272 * of @widget->window for widgets with their own window.
3273 * @returns: A newly allocated region holding the intersection of @widget
3274 * and @region. The coordinates of the return value are
3275 * relative to @widget->window for %NO_WINDOW widgets, and
3276 * relative to the parent window of @widget->window for
3277 * widgets with their own window.
3279 * Computes the intersection of a @widget's area and @region, returning
3280 * the intersection. The result may be empty, use gdk_region_empty() to
3284 gtk_widget_region_intersect (GtkWidget *widget,
3289 g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
3290 g_return_val_if_fail (region != NULL, NULL);
3292 dest = gdk_region_rectangle (&widget->allocation);
3294 gdk_region_intersect (dest, region);
3300 * gtk_widget_grab_focus:
3301 * @widget: a #GtkWidget
3303 * Causes @widget to have the keyboard focus for the #GtkWindow it's
3304 * inside. @widget must be a focusable widget, such as a #GtkEntry;
3305 * something like #GtkFrame won't work. (More precisely, it must have the
3306 * %GTK_CAN_FOCUS flag set.)
3310 gtk_widget_grab_focus (GtkWidget *widget)
3312 g_return_if_fail (GTK_IS_WIDGET (widget));
3314 if (!GTK_WIDGET_IS_SENSITIVE (widget))
3317 g_object_ref (G_OBJECT (widget));
3318 gtk_signal_emit (GTK_OBJECT (widget), widget_signals[GRAB_FOCUS]);
3319 g_object_notify (G_OBJECT (widget), "has_focus");
3320 g_object_unref (G_OBJECT (widget));
3324 reset_focus_recurse (GtkWidget *widget,
3327 if (GTK_IS_CONTAINER (widget))
3329 GtkContainer *container;
3331 container = GTK_CONTAINER (widget);
3332 gtk_container_set_focus_child (container, NULL);
3334 gtk_container_foreach (container,
3335 reset_focus_recurse,
3341 gtk_widget_real_grab_focus (GtkWidget *focus_widget)
3343 if (GTK_WIDGET_CAN_FOCUS (focus_widget))
3345 GtkWidget *toplevel;
3348 /* clear the current focus setting, break if the current widget
3349 * is the focus widget's parent, since containers above that will
3350 * be set by the next loop.
3352 toplevel = gtk_widget_get_toplevel (focus_widget);
3353 if (GTK_WIDGET_TOPLEVEL (toplevel))
3355 widget = GTK_WINDOW (toplevel)->focus_widget;
3357 if (widget == focus_widget)
3359 /* We call _gtk_window_internal_set_focus() here so that the
3360 * toplevel window can request the focus if necessary.
3361 * This is needed when the toplevel is a GtkPlug
3363 if (!GTK_WIDGET_HAS_FOCUS (widget))
3364 _gtk_window_internal_set_focus (GTK_WINDOW (toplevel), focus_widget);
3371 while (widget->parent && widget->parent != focus_widget->parent)
3373 widget = widget->parent;
3374 gtk_container_set_focus_child (GTK_CONTAINER (widget), NULL);
3378 else if (toplevel != focus_widget)
3380 /* gtk_widget_grab_focus() operates on a tree without window...
3381 * actually, this is very questionable behaviour.
3384 gtk_container_foreach (GTK_CONTAINER (toplevel),
3385 reset_focus_recurse,
3389 /* now propagate the new focus up the widget tree and finally
3390 * set it on the window
3392 widget = focus_widget;
3393 while (widget->parent)
3395 gtk_container_set_focus_child (GTK_CONTAINER (widget->parent), widget);
3396 widget = widget->parent;
3398 if (GTK_IS_WINDOW (widget))
3399 _gtk_window_internal_set_focus (GTK_WINDOW (widget), focus_widget);
3404 gtk_widget_real_show_help (GtkWidget *widget,
3405 GtkWidgetHelpType help_type)
3407 if (help_type == GTK_WIDGET_HELP_TOOLTIP)
3409 _gtk_tooltips_toggle_keyboard_mode (widget);
3417 gtk_widget_real_focus (GtkWidget *widget,
3418 GtkDirectionType direction)
3420 if (!GTK_WIDGET_CAN_FOCUS (widget))
3423 if (!gtk_widget_is_focus (widget))
3425 gtk_widget_grab_focus (widget);
3433 * gtk_widget_is_focus:
3434 * @widget: a #GtkWidget
3436 * Determines if the widget is the focus widget within its
3437 * toplevel. (This does not mean that the %HAS_FOCUS flag is
3438 * necessarily set; %HAS_FOCUS will only be set if the
3439 * toplevel widget additionally has the global input focus.)
3441 * Return value: %TRUE if the widget is the focus widget.
3444 gtk_widget_is_focus (GtkWidget *widget)
3446 GtkWidget *toplevel;
3448 g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
3450 toplevel = gtk_widget_get_toplevel (widget);
3452 if (GTK_IS_WINDOW (toplevel))
3453 return widget == GTK_WINDOW (toplevel)->focus_widget;
3459 * gtk_widget_grab_default:
3460 * @widget: a #GtkWidget
3462 * Causes @widget to become the default widget. @widget must have the
3463 * %GTK_CAN_DEFAULT flag set; typically you have to set this flag
3464 * yourself by calling <literal>GTK_WIDGET_SET_FLAGS (@widget,
3465 * GTK_CAN_DEFAULT)</literal>. The default widget is activated when the user
3466 * presses Enter in a window. Default widgets must be activatable,
3467 * that is, gtk_widget_activate() should affect them.
3471 gtk_widget_grab_default (GtkWidget *widget)
3475 g_return_if_fail (GTK_IS_WIDGET (widget));
3476 g_return_if_fail (GTK_WIDGET_CAN_DEFAULT (widget));
3478 window = gtk_widget_get_toplevel (widget);
3480 if (window && GTK_WIDGET_TOPLEVEL (window))
3482 gtk_window_set_default (GTK_WINDOW (window), widget);
3483 g_object_notify (G_OBJECT (widget), "has_default");
3486 g_warning (G_STRLOC ": widget not within a GtkWindow");
3490 * gtk_widget_set_name:
3491 * @widget: a #GtkWidget
3492 * @name: name for the widget
3494 * Widgets can be named, which allows you to refer to them from a
3495 * gtkrc file. You can apply a style to widgets with a particular name
3496 * in the gtkrc file. See the documentation for gtkrc files (on the
3497 * same page as the docs for #GtkRcStyle).
3501 gtk_widget_set_name (GtkWidget *widget,
3504 g_return_if_fail (GTK_IS_WIDGET (widget));
3507 g_free (widget->name);
3508 widget->name = g_strdup (name);
3510 if (GTK_WIDGET_RC_STYLE (widget))
3511 gtk_widget_reset_rc_style (widget);
3513 g_object_notify (G_OBJECT (widget), "name");
3517 * gtk_widget_get_name:
3518 * @widget: a #GtkWidget
3520 * Retrieves the name of a widget. The return value should not be
3521 * freed. See gtk_widget_set_name() for the significance of widget
3524 * Return value: name of the widget
3526 G_CONST_RETURN gchar*
3527 gtk_widget_get_name (GtkWidget *widget)
3529 g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
3532 return widget->name;
3533 return gtk_type_name (GTK_WIDGET_TYPE (widget));
3537 * gtk_widget_set_state:
3538 * @widget: a #GtkWidget
3539 * @state: new state for @widget
3541 * This function is for use in widget implementations. Sets the state
3542 * of a widget (insensitive, prelighted, etc.) Usually you should set
3543 * the state using wrapper functions such as gtk_widget_set_sensitive().
3547 gtk_widget_set_state (GtkWidget *widget,
3550 g_return_if_fail (GTK_IS_WIDGET (widget));
3552 if (state == GTK_WIDGET_STATE (widget))
3555 if (state == GTK_STATE_INSENSITIVE)
3556 gtk_widget_set_sensitive (widget, FALSE);
3562 data.state_restoration = FALSE;
3563 data.use_forall = FALSE;
3565 data.parent_sensitive = (GTK_WIDGET_IS_SENSITIVE (widget->parent) != FALSE);
3567 data.parent_sensitive = TRUE;
3569 gtk_widget_propagate_state (widget, &data);
3571 if (GTK_WIDGET_DRAWABLE (widget))
3572 gtk_widget_queue_clear (widget);
3577 gtk_widget_set_app_paintable (GtkWidget *widget,
3578 gboolean app_paintable)
3580 g_return_if_fail (GTK_IS_WIDGET (widget));
3582 app_paintable = (app_paintable != FALSE);
3584 if (GTK_WIDGET_APP_PAINTABLE (widget) != app_paintable)
3587 GTK_WIDGET_SET_FLAGS (widget, GTK_APP_PAINTABLE);
3589 GTK_WIDGET_UNSET_FLAGS (widget, GTK_APP_PAINTABLE);
3591 if (GTK_WIDGET_DRAWABLE (widget))
3592 gtk_widget_queue_clear (widget);
3594 g_object_notify (G_OBJECT (widget), "app_paintable");
3599 * gtk_widget_set_double_buffered:
3600 * @widget: a #GtkWidget
3601 * @double_buffered: %TRUE to double-buffer a widget
3603 * Widgets are double buffered by default; you can use this function
3604 * to turn off the buffering. "Double buffered" simply means that
3605 * gdk_window_begin_paint_region() and gdk_window_end_paint() are called
3606 * automatically around expose events sent to the
3607 * widget. gdk_window_begin_paint() diverts all drawing to a widget's
3608 * window to an offscreen buffer, and gdk_window_end_paint() draws the
3609 * buffer to the screen. The result is that users see the window
3610 * update in one smooth step, and don't see individual graphics
3611 * primitives being rendered.
3613 * In very simple terms, double buffered widgets don't flicker,
3614 * so you would only use this function to turn off double buffering
3615 * if you had special needs and really knew what you were doing.
3619 gtk_widget_set_double_buffered (GtkWidget *widget,
3620 gboolean double_buffered)
3622 g_return_if_fail (GTK_IS_WIDGET (widget));
3624 if (double_buffered)
3625 GTK_WIDGET_SET_FLAGS (widget, GTK_DOUBLE_BUFFERED);
3627 GTK_WIDGET_UNSET_FLAGS (widget, GTK_DOUBLE_BUFFERED);
3631 * gtk_widget_set_redraw_on_allocate:
3632 * @widget: a #GtkWidget
3633 * @redraw_on_allocate: if %TRUE, the entire widget will be redrawn
3634 * when it is allocated to a new size. Otherwise, only the
3635 * new portion of the widget will be redrawn.
3637 * Sets whether a when a widgets size allocation changes, the entire
3638 * widget is queued for drawing. By default, this setting is %TRUE and
3639 * the entire widget is redrawn on every size change. If your widget
3640 * leaves the upper left are unchanged when made bigger, turning this
3641 * setting on will improve performance.
3643 * Note that for %NO_WINDOW widgets setting this flag to %FALSE turns
3644 * off all allocation on resizing: the widget will not even redraw if
3645 * its position changes; this is to allow containers that don't draw
3646 * anything to avoid excess invalidations. If you set this flag on a
3647 * %NO_WINDOW widget that <emphasis>does</emphasis> draw on @widget->window,
3648 * you are responsible for invalidating both the old and new allocation
3649 * of the widget when the widget is moved and responsible for invalidating
3650 * regions newly when the widget increases size.
3653 gtk_widget_set_redraw_on_allocate (GtkWidget *widget,
3654 gboolean redraw_on_allocate)
3656 g_return_if_fail (GTK_IS_WIDGET (widget));
3658 if (redraw_on_allocate)
3659 GTK_PRIVATE_SET_FLAG (widget, GTK_REDRAW_ON_ALLOC);
3661 GTK_PRIVATE_UNSET_FLAG (widget, GTK_REDRAW_ON_ALLOC);
3665 * gtk_widget_set_sensitive:
3666 * @widget: a #GtkWidget
3667 * @sensitive: %TRUE to make the widget sensitive
3669 * Sets the sensitivity of a widget. A widget is sensitive if the user
3670 * can interact with it. Insensitive widgets are "grayed out" and the
3671 * user can't interact with them. Insensitive widgets are known as
3672 * "inactive", "disabled", or "ghosted" in some other toolkits.
3676 gtk_widget_set_sensitive (GtkWidget *widget,
3681 g_return_if_fail (GTK_IS_WIDGET (widget));
3683 sensitive = (sensitive != FALSE);
3685 if (sensitive == (GTK_WIDGET_SENSITIVE (widget) != FALSE))
3690 GTK_WIDGET_SET_FLAGS (widget, GTK_SENSITIVE);
3691 data.state = GTK_WIDGET_SAVED_STATE (widget);
3695 GTK_WIDGET_UNSET_FLAGS (widget, GTK_SENSITIVE);
3696 data.state = GTK_WIDGET_STATE (widget);
3698 data.state_restoration = TRUE;
3699 data.use_forall = TRUE;
3702 data.parent_sensitive = (GTK_WIDGET_IS_SENSITIVE (widget->parent) != FALSE);
3704 data.parent_sensitive = TRUE;
3706 gtk_widget_propagate_state (widget, &data);
3707 if (GTK_WIDGET_DRAWABLE (widget))
3708 gtk_widget_queue_clear (widget);
3710 g_object_notify (G_OBJECT (widget), "sensitive");
3714 * gtk_widget_set_parent:
3715 * @widget: a #GtkWidget
3716 * @parent: parent container
3718 * This function is useful only when implementing subclasses of #GtkContainer.
3719 * Sets the container as the parent of @widget, and takes care of
3720 * some details such as updating the state and style of the child
3721 * to reflect its new location. The opposite function is
3722 * gtk_widget_unparent().
3726 gtk_widget_set_parent (GtkWidget *widget,
3731 g_return_if_fail (GTK_IS_WIDGET (widget));
3732 g_return_if_fail (widget->parent == NULL);
3733 g_return_if_fail (!GTK_WIDGET_TOPLEVEL (widget));
3734 g_return_if_fail (GTK_IS_WIDGET (parent));
3735 g_return_if_fail (widget != parent);
3737 /* keep this function in sync with gtk_menu_attach_to_widget()
3740 gtk_widget_ref (widget);
3741 gtk_object_sink (GTK_OBJECT (widget));
3742 widget->parent = parent;
3744 if (GTK_WIDGET_STATE (parent) != GTK_STATE_NORMAL)
3745 data.state = GTK_WIDGET_STATE (parent);
3747 data.state = GTK_WIDGET_STATE (widget);
3748 data.state_restoration = FALSE;
3749 data.parent_sensitive = (GTK_WIDGET_IS_SENSITIVE (parent) != FALSE);
3750 data.use_forall = GTK_WIDGET_IS_SENSITIVE (parent) != GTK_WIDGET_IS_SENSITIVE (widget);
3752 gtk_widget_propagate_state (widget, &data);
3754 gtk_widget_reset_rc_styles (widget);
3756 gtk_signal_emit (GTK_OBJECT (widget), widget_signals[PARENT_SET], NULL);
3757 if (GTK_WIDGET_ANCHORED (widget->parent))
3758 _gtk_widget_propagate_hierarchy_changed (widget, NULL);
3759 g_object_notify (G_OBJECT (widget), "parent");
3761 /* Enforce realized/mapped invariants
3763 if (GTK_WIDGET_REALIZED (widget->parent))
3764 gtk_widget_realize (widget);
3766 if (GTK_WIDGET_VISIBLE (widget->parent) &&
3767 GTK_WIDGET_VISIBLE (widget))
3769 if (GTK_WIDGET_CHILD_VISIBLE (widget) &&
3770 GTK_WIDGET_MAPPED (widget->parent))
3771 gtk_widget_map (widget);
3773 gtk_widget_queue_resize (widget);
3778 * gtk_widget_get_parent:
3779 * @widget: a #GtkWidget
3781 * Returns the parent container of @widget.
3783 * Return value: the parent container of @widget, or %NULL
3786 gtk_widget_get_parent (GtkWidget *widget)
3788 g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
3790 return widget->parent;
3793 /*****************************************
3795 * see docs/styles.txt
3796 *****************************************/
3799 * gtk_widget_set_style:
3800 * @widget: a #GtkWidget
3801 * @style: a #GtkStyle, or %NULL to remove the effect of a previous
3802 * gtk_widget_set_style() and go back to the default style
3804 * Sets the #GtkStyle for a widget (@widget->style). You probably don't
3805 * want to use this function; it interacts badly with themes, because
3806 * themes work by replacing the #GtkStyle. Instead, use
3807 * gtk_widget_modify_style().
3811 gtk_widget_set_style (GtkWidget *widget,
3814 g_return_if_fail (GTK_IS_WIDGET (widget));
3818 gboolean initial_emission;
3820 initial_emission = !GTK_WIDGET_RC_STYLE (widget) && !GTK_WIDGET_USER_STYLE (widget);
3822 GTK_WIDGET_UNSET_FLAGS (widget, GTK_RC_STYLE);
3823 GTK_PRIVATE_SET_FLAG (widget, GTK_USER_STYLE);
3825 gtk_widget_set_style_internal (widget, style, initial_emission);
3829 if (GTK_WIDGET_USER_STYLE (widget))
3830 gtk_widget_reset_rc_style (widget);
3835 * gtk_widget_ensure_style:
3836 * @widget: a #GtkWidget
3838 * Ensures that @widget has a style (@widget->style). Not a very useful
3839 * function; most of the time, if you want the style, the widget is
3840 * realized, and realized widgets are guaranteed to have a style
3845 gtk_widget_ensure_style (GtkWidget *widget)
3847 g_return_if_fail (GTK_IS_WIDGET (widget));
3849 if (!GTK_WIDGET_USER_STYLE (widget) &&
3850 !GTK_WIDGET_RC_STYLE (widget))
3851 gtk_widget_reset_rc_style (widget);
3854 /* Look up the RC style for this widget, unsetting any user style that
3855 * may be in effect currently
3858 gtk_widget_reset_rc_style (GtkWidget *widget)
3860 GtkStyle *new_style;
3861 gboolean initial_emission;
3863 g_return_if_fail (GTK_IS_WIDGET (widget));
3865 initial_emission = !GTK_WIDGET_RC_STYLE (widget) && !GTK_WIDGET_USER_STYLE (widget);
3867 GTK_PRIVATE_UNSET_FLAG (widget, GTK_USER_STYLE);
3868 GTK_WIDGET_SET_FLAGS (widget, GTK_RC_STYLE);
3870 new_style = gtk_rc_get_style (widget);
3872 new_style = gtk_widget_get_default_style ();
3874 if (initial_emission || new_style != widget->style)
3875 gtk_widget_set_style_internal (widget, new_style, initial_emission);
3879 * gtk_widget_get_style:
3880 * @widget: a #GtkWidget
3882 * Simply an accessor function that returns @widget->style.
3884 * Return value: the widget's #GtkStyle
3887 gtk_widget_get_style (GtkWidget *widget)
3889 g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
3891 return widget->style;
3895 * gtk_widget_modify_style:
3896 * @widget: a #GtkWidget
3897 * @style: the #GtkRcStyle holding the style modifications
3899 * Modifies style values on the widget. Modifications made using this
3900 * technique take precedence over style values set via an RC file,
3901 * however, they will be overriden if a style is explicitely set on
3902 * the widget using gtk_widget_set_style(). The #GtkRcStyle structure
3903 * is designed so each field can either be set or unset, so it is
3904 * possible, using this function, to modify some style values and
3905 * leave the others unchanged.
3907 * Note that modifications made with this function are not cumulative
3908 * with previous calls to gtk_widget_modify_style() or with such
3909 * functions as gtk_widget_modify_fg(). If you wish to retain
3910 * previous values, you must first call gtk_widget_get_modifier_style(),
3911 * make your modifications to the returned style, then call
3912 * gtk_widget_modify_style() with that style. On the other hand,
3913 * if you first call gtk_widget_modify_style(), subsequent calls
3914 * to such functions gtk_widget_modify_fg() will have a cumulative
3915 * effect with the initial modifications.
3918 gtk_widget_modify_style (GtkWidget *widget,
3921 GtkRcStyle *old_style;
3923 g_return_if_fail (GTK_IS_WIDGET (widget));
3924 g_return_if_fail (GTK_IS_RC_STYLE (style));
3926 old_style = gtk_object_get_data_by_id (GTK_OBJECT (widget),
3929 gtk_object_set_data_by_id_full (GTK_OBJECT (widget),
3931 gtk_rc_style_copy (style),
3932 (GtkDestroyNotify)gtk_rc_style_unref);
3934 /* note that "style" may be invalid here if it was the old
3935 * modifier style and the only reference was our own.
3938 if (GTK_WIDGET_RC_STYLE (widget))
3939 gtk_widget_reset_rc_style (widget);
3943 * gtk_widget_get_modifier_style:
3944 * @widget: a #GtkWidget
3946 * Returns the current modifier style for the widget. (As set by
3947 * gtk_widget_modify_style().) If no style has previously set, a new
3948 * #GtkRcStyle will be created with all values unset, and set as the
3949 * modifier style for the widget. If you make changes to this rc
3950 * style, you must call gtk_widget_modify_style(), passing in the
3951 * returned rc style, to make sure that your changes take effect.
3953 * Caution: passing the style back to gtk_widget_modify_style() will
3954 * normally end up destroying it, because gtk_widget_modify_style() copies
3955 * the passed-in style and sets the copy as the new modifier style,
3956 * thus dropping any reference to the old modifier style. Add a reference
3957 * to the modifier style if you want to keep it alive.
3959 * Return value: the modifier style for the widget. This rc style is
3960 * owned by the widget. If you want to keep a pointer to value this
3961 * around, you must add a refcount using gtk_rc_style_ref().
3964 gtk_widget_get_modifier_style (GtkWidget *widget)
3966 GtkRcStyle *rc_style;
3968 g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
3970 rc_style = gtk_object_get_data_by_id (GTK_OBJECT (widget),
3975 rc_style = gtk_rc_style_new ();
3976 gtk_object_set_data_by_id_full (GTK_OBJECT (widget),
3979 (GtkDestroyNotify)gtk_rc_style_unref);
3986 gtk_widget_modify_color_component (GtkWidget *widget,
3987 GtkRcFlags component,
3991 GtkRcStyle *rc_style = gtk_widget_get_modifier_style (widget);
3996 rc_style->fg[state] = *color;
3999 rc_style->bg[state] = *color;
4002 rc_style->text[state] = *color;
4005 rc_style->base[state] = *color;
4008 g_assert_not_reached();
4011 rc_style->color_flags[state] |= component;
4013 gtk_widget_modify_style (widget, rc_style);
4017 * gtk_widget_modify_fg:
4018 * @widget: a #GtkWidget.
4019 * @state: the state for which to set the foreground color.
4020 * @color: the color to assign (does not need to be allocated).
4022 * Sets the foreground color for a widget in a particular state. All
4023 * other style values are left untouched. See also
4024 * gtk_widget_modify_style().
4027 gtk_widget_modify_fg (GtkWidget *widget,
4031 g_return_if_fail (GTK_IS_WIDGET (widget));
4032 g_return_if_fail (state >= GTK_STATE_NORMAL && state <= GTK_STATE_INSENSITIVE);
4033 g_return_if_fail (color != NULL);
4035 gtk_widget_modify_color_component (widget, GTK_RC_FG, state, color);
4039 * gtk_widget_modify_bg:
4040 * @widget: a #GtkWidget.
4041 * @state: the state for which to set the background color.
4042 * @color: the color to assign (does not need to be allocated).
4044 * Sets the background color for a widget in a particular state. All
4045 * other style values are left untouched. See also
4046 * gtk_widget_modify_style().
4049 gtk_widget_modify_bg (GtkWidget *widget,
4053 g_return_if_fail (GTK_IS_WIDGET (widget));
4054 g_return_if_fail (state >= GTK_STATE_NORMAL && state <= GTK_STATE_INSENSITIVE);
4055 g_return_if_fail (color != NULL);
4057 gtk_widget_modify_color_component (widget, GTK_RC_BG, state, color);
4061 * gtk_widget_modify_text:
4062 * @widget: a #GtkWidget.
4063 * @state: the state for which to set the text color.
4064 * @color: the color to assign (does not need to be allocated).
4066 * Sets the text color for a widget in a particular state. All other
4067 * style values are left untouched. The text color is the foreground
4068 * color used along with the base color (see gtk_widget_modify_base())
4069 * for widgets such as #GtkEntry and #GtkTextView. See also
4070 * gtk_widget_modify_style().
4073 gtk_widget_modify_text (GtkWidget *widget,
4077 g_return_if_fail (GTK_IS_WIDGET (widget));
4078 g_return_if_fail (state >= GTK_STATE_NORMAL && state <= GTK_STATE_INSENSITIVE);
4079 g_return_if_fail (color != NULL);
4081 gtk_widget_modify_color_component (widget, GTK_RC_TEXT, state, color);
4085 * gtk_widget_modify_base:
4086 * @widget: a #GtkWidget.
4087 * @state: the state for which to set the base color.
4088 * @color: the color to assign (does not need to be allocated).
4090 * Sets the base color for a widget in a particular state.
4091 * All other style values are left untouched. The base color
4092 * is the background color used along with the text color
4093 * (see gtk_widget_modify_text()) for widgets such as #GtkEntry
4094 * and #GtkTextView. See also gtk_widget_modify_style().
4097 gtk_widget_modify_base (GtkWidget *widget,
4101 g_return_if_fail (GTK_IS_WIDGET (widget));
4102 g_return_if_fail (state >= GTK_STATE_NORMAL && state <= GTK_STATE_INSENSITIVE);
4103 g_return_if_fail (color != NULL);
4105 gtk_widget_modify_color_component (widget, GTK_RC_BASE, state, color);
4109 * gtk_widget_modify_font:
4110 * @widget: a #GtkWidget
4111 * @font_desc: the font description to use
4113 * Sets the font to use for a widget. All other style values are left
4114 * untouched. See also gtk_widget_modify_style().
4117 gtk_widget_modify_font (GtkWidget *widget,
4118 PangoFontDescription *font_desc)
4120 GtkRcStyle *rc_style;
4122 g_return_if_fail (GTK_IS_WIDGET (widget));
4123 g_return_if_fail (font_desc != NULL);
4125 rc_style = gtk_widget_get_modifier_style (widget);
4127 if (rc_style->font_desc)
4128 pango_font_description_free (rc_style->font_desc);
4130 rc_style->font_desc = pango_font_description_copy (font_desc);
4132 gtk_widget_modify_style (widget, rc_style);
4136 gtk_widget_direction_changed (GtkWidget *widget,
4137 GtkTextDirection previous_direction)
4139 gtk_widget_queue_resize (widget);
4143 gtk_widget_style_set (GtkWidget *widget,
4144 GtkStyle *previous_style)
4146 if (GTK_WIDGET_REALIZED (widget) &&
4147 !GTK_WIDGET_NO_WINDOW (widget))
4148 gtk_style_set_background (widget->style, widget->window, widget->state);
4152 gtk_widget_set_style_internal (GtkWidget *widget,
4154 gboolean initial_emission)
4156 g_object_ref (G_OBJECT (widget));
4157 g_object_freeze_notify (G_OBJECT (widget));
4159 if (widget->style != style || initial_emission)
4161 PangoContext *context = gtk_widget_peek_pango_context (widget);
4163 pango_context_set_font_description (context, style->font_desc);
4166 if (widget->style != style)
4168 GtkStyle *previous_style;
4170 if (GTK_WIDGET_REALIZED (widget))
4172 gtk_widget_reset_shapes (widget);
4173 gtk_style_detach (widget->style);
4176 previous_style = widget->style;
4177 widget->style = style;
4178 g_object_ref (widget->style);
4180 if (GTK_WIDGET_REALIZED (widget))
4181 widget->style = gtk_style_attach (widget->style, widget->window);
4183 gtk_signal_emit (GTK_OBJECT (widget),
4184 widget_signals[STYLE_SET],
4185 initial_emission ? NULL : previous_style);
4186 g_object_unref (previous_style);
4188 if (widget->parent && !initial_emission)
4189 gtk_widget_queue_resize (widget);
4191 else if (initial_emission)
4192 gtk_signal_emit (GTK_OBJECT (widget),
4193 widget_signals[STYLE_SET],
4195 g_object_notify (G_OBJECT (widget), "style");
4196 g_object_thaw_notify (G_OBJECT (widget));
4197 g_object_unref (G_OBJECT (widget));
4201 gtk_widget_propagate_hierarchy_changed_recurse (GtkWidget *widget,
4202 gpointer client_data)
4204 gboolean new_anchored;
4206 new_anchored = GTK_WIDGET_TOPLEVEL (widget) ||
4207 (widget->parent && GTK_WIDGET_ANCHORED (widget->parent));
4209 if (GTK_WIDGET_ANCHORED (widget) != new_anchored)
4211 gtk_widget_ref (widget);
4214 GTK_PRIVATE_SET_FLAG (widget, GTK_ANCHORED);
4216 GTK_PRIVATE_UNSET_FLAG (widget, GTK_ANCHORED);
4218 g_signal_emit (GTK_OBJECT (widget), widget_signals[HIERARCHY_CHANGED],
4221 if (GTK_IS_CONTAINER (widget))
4222 gtk_container_forall (GTK_CONTAINER (widget),
4223 gtk_widget_propagate_hierarchy_changed_recurse,
4226 gtk_widget_unref (widget);
4231 * _gtk_widget_propagate_hierarchy_changed:
4232 * @widget: a #GtkWidget
4233 * @previous_toplevel: Previous toplevel
4235 * Propagates changes in the anchored state to a widget and all
4236 * children, unsetting or setting the %ANCHORED flag, and
4237 * emitting ::hierarchy_changed.
4240 _gtk_widget_propagate_hierarchy_changed (GtkWidget *widget,
4241 GtkWidget *previous_toplevel)
4243 if (previous_toplevel)
4244 g_object_ref (previous_toplevel);
4246 gtk_widget_propagate_hierarchy_changed_recurse (widget, previous_toplevel);
4248 if (previous_toplevel)
4249 g_object_unref (previous_toplevel);
4253 reset_rc_styles_recurse (GtkWidget *widget, gpointer data)
4255 if (GTK_WIDGET_RC_STYLE (widget))
4256 gtk_widget_reset_rc_style (widget);
4258 if (GTK_IS_CONTAINER (widget))
4259 gtk_container_forall (GTK_CONTAINER (widget),
4260 reset_rc_styles_recurse,
4265 gtk_widget_reset_rc_styles (GtkWidget *widget)
4267 g_return_if_fail (GTK_IS_WIDGET (widget));
4269 reset_rc_styles_recurse (widget, NULL);
4273 * gtk_widget_get_default_style:
4275 * Returns the default style used by all widgets initially.
4277 * Returns: the default style. This #GtkStyle object is owned by GTK+ and
4278 * should not be modified or freed.
4281 gtk_widget_get_default_style (void)
4283 if (!gtk_default_style)
4285 gtk_default_style = gtk_style_new ();
4286 g_object_ref (gtk_default_style);
4289 return gtk_default_style;
4292 static PangoContext *
4293 gtk_widget_peek_pango_context (GtkWidget *widget)
4295 return gtk_object_get_data_by_id (GTK_OBJECT (widget), quark_pango_context);
4299 * gtk_widget_get_pango_context:
4300 * @widget: a #GtkWidget
4302 * Gets a #PangoContext with the appropriate colormap, font description
4303 * and base direction for this widget. Unlike the context returned
4304 * by gtk_widget_create_pango_context(), this context is owned by
4305 * the widget (it can be used as long as widget exists), and will
4306 * be updated to match any changes to the widget's attributes.
4308 * If you create and keep a #PangoLayout using this context, you must
4309 * deal with changes to the context by calling pango_layout_context_changed()
4310 * on the layout in response to the ::style_set and ::direction_set signals
4313 * Return value: the #PangoContext for the widget.
4316 gtk_widget_get_pango_context (GtkWidget *widget)
4318 PangoContext *context;
4320 g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
4322 context = gtk_object_get_data_by_id (GTK_OBJECT (widget), quark_pango_context);
4325 context = gtk_widget_create_pango_context (GTK_WIDGET (widget));
4326 gtk_object_set_data_by_id_full (GTK_OBJECT (widget), quark_pango_context, context,
4327 (GDestroyNotify) g_object_unref);
4334 * gtk_widget_create_pango_context:
4335 * @widget: a #GtkWidget
4337 * Creates a new #PangoContext with the appropriate colormap,
4338 * font description, and base direction for drawing text for
4339 * this widget. See also gtk_widget_get_pango_context().
4341 * Return value: the new #PangoContext
4344 gtk_widget_create_pango_context (GtkWidget *widget)
4346 PangoContext *context;
4348 g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
4350 context = gdk_pango_context_get ();
4352 gdk_pango_context_set_colormap (context, gtk_widget_get_colormap (widget));
4353 pango_context_set_base_dir (context,
4354 gtk_widget_get_direction (widget) == GTK_TEXT_DIR_LTR ?
4355 PANGO_DIRECTION_LTR : PANGO_DIRECTION_RTL);
4356 pango_context_set_font_description (context, widget->style->font_desc);
4357 pango_context_set_language (context, gtk_get_default_language ());
4363 * gtk_widget_create_pango_layout:
4364 * @widget: a #GtkWidget
4365 * @text: text to set on the layout (can be %NULL)
4367 * Creates a new #PangoLayout with the appropriate colormap,
4368 * font description, and base direction for drawing text for
4371 * If you keep a #PangoLayout created in this way around, in order
4372 * notify the layout of changes to the base direction or font of this
4373 * widget, you must call pango_layout_context_changed() in response to
4374 * the ::style_set and ::direction_set signals for the widget.
4376 * Return value: the new #PangoLayout
4379 gtk_widget_create_pango_layout (GtkWidget *widget,
4382 PangoLayout *layout;
4383 PangoContext *context;
4385 g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
4387 context = gtk_widget_get_pango_context (widget);
4388 layout = pango_layout_new (context);
4391 pango_layout_set_text (layout, text, -1);
4397 * gtk_widget_render_icon:
4398 * @widget: a #GtkWidget
4399 * @stock_id: a stock ID
4400 * @size: a stock size
4401 * @detail: render detail to pass to theme engine
4403 * A convenience function that uses the theme engine and RC file
4404 * settings for @widget to look up @stock_id and render it to
4405 * a pixbuf. @stock_id should be a stock icon ID such as
4406 * #GTK_STOCK_OPEN or #GTK_STOCK_OK. @size should be a size
4407 * such as #GTK_ICON_SIZE_MENU. @detail should be a string that
4408 * identifies the widget or code doing the rendering, so that
4409 * theme engines can special-case rendering for that widget or code.
4411 * Return value: a new pixbuf, or %NULL if the stock ID wasn't known
4414 gtk_widget_render_icon (GtkWidget *widget,
4415 const gchar *stock_id,
4417 const gchar *detail)
4419 GtkIconSet *icon_set;
4422 g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
4423 g_return_val_if_fail (stock_id != NULL, NULL);
4424 g_return_val_if_fail (size > GTK_ICON_SIZE_INVALID, NULL);
4426 gtk_widget_ensure_style (widget);
4428 icon_set = gtk_style_lookup_icon_set (widget->style, stock_id);
4430 if (icon_set == NULL)
4433 retval = gtk_icon_set_render_icon (icon_set,
4435 gtk_widget_get_direction (widget),
4436 GTK_WIDGET_STATE (widget),
4445 * gtk_widget_set_parent_window:
4446 * @widget: a #GtkWidget.
4447 * @parent_window: the new parent window.
4449 * Sets a non default parent window for @widget.
4452 gtk_widget_set_parent_window (GtkWidget *widget,
4453 GdkWindow *parent_window)
4455 GdkWindow *old_parent_window;
4457 g_return_if_fail (GTK_IS_WIDGET (widget));
4459 old_parent_window = gtk_object_get_data_by_id (GTK_OBJECT (widget),
4460 quark_parent_window);
4462 if (parent_window != old_parent_window)
4464 gtk_object_set_data_by_id (GTK_OBJECT (widget), quark_parent_window,
4466 if (old_parent_window)
4467 gdk_window_unref (old_parent_window);
4469 gdk_window_ref (parent_window);
4475 * gtk_widget_set_child_visible:
4476 * @widget: a #GtkWidget
4477 * @is_visible: if %TRUE, @widget should be mapped along with its parent.
4479 * Sets whether @widget should be mapped along with its when its parent
4480 * is mapped and @widget has been shown with gtk_widget_show().
4482 * The child visibility can be set for widget before it is added to
4483 * a container with gtk_widget_set_parent(), to avoid mapping
4484 * children unnecessary before immediately unmapping them. However
4485 * it will be reset to its default state of %TRUE when the widget
4486 * is removed from a container.
4488 * Note that changing the child visibility of a widget does not
4489 * queue a resize on the widget. Most of the time, the size of
4490 * a widget is computed from all visible children, whether or
4491 * not they are mapped. If this is not the case, the container
4492 * can queue a resize itself.
4494 * This function is only useful for container implementations and
4495 * never should be called by an application.
4498 gtk_widget_set_child_visible (GtkWidget *widget,
4499 gboolean is_visible)
4501 g_return_if_fail (GTK_IS_WIDGET (widget));
4502 g_return_if_fail (!GTK_WIDGET_TOPLEVEL (widget));
4505 GTK_PRIVATE_SET_FLAG (widget, GTK_CHILD_VISIBLE);
4507 GTK_PRIVATE_UNSET_FLAG (widget, GTK_CHILD_VISIBLE);
4508 if (GTK_WIDGET_REALIZED (widget->parent))
4510 if (GTK_WIDGET_MAPPED (widget->parent) &&
4511 GTK_WIDGET_CHILD_VISIBLE (widget) &&
4512 GTK_WIDGET_VISIBLE (widget))
4513 gtk_widget_map (widget);
4515 gtk_widget_unmap (widget);
4520 * gtk_widget_get_child_visible:
4521 * @widget: a #GtkWidget
4523 * Gets the value set with gtk_widget_set_child_visible().
4524 * If you feel a need to use this function, your code probably
4525 * needs reorganization.
4527 * This function is only useful for container implementations and
4528 * never should be called by an application.
4530 * Return value: %TRUE if the widget is mapped with the parent.
4533 gtk_widget_get_child_visible (GtkWidget *widget)
4535 g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
4537 return GTK_WIDGET_CHILD_VISIBLE (widget);
4541 * gtk_widget_get_parent_window:
4542 * @widget: a #GtkWidget.
4543 * @returns: the parent window of @widget.
4545 * Gets @widget's parent window.
4548 gtk_widget_get_parent_window (GtkWidget *widget)
4550 GdkWindow *parent_window;
4552 g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
4553 g_return_val_if_fail (widget->parent != NULL, NULL);
4555 parent_window = gtk_object_get_data_by_id (GTK_OBJECT (widget),
4556 quark_parent_window);
4558 return (parent_window != NULL) ? parent_window : widget->parent->window;
4562 * gtk_widget_child_focus:
4563 * @widget: a #GtkWidget
4564 * @direction: direction of focus movement
4566 * This function is used by custom widget implementations; if you're
4567 * writing an app, you'd use gtk_widget_grab_focus() to move the focus
4568 * to a particular widget, and gtk_container_set_focus_chain() to
4569 * change the focus tab order. So you may want to investigate those
4570 * functions instead.
4572 * gtk_widget_child_focus() is called by containers as the user moves
4573 * around the window using keyboard shortcuts. @direction indicates
4574 * what kind of motion is taking place (up, down, left, right, tab
4575 * forward, tab backward). gtk_widget_child_focus() invokes the
4576 * "focus" signal on #GtkWidget; widgets override the default handler
4577 * for this signal in order to implement appropriate focus behavior.
4579 * The "focus" default handler for a widget should return %TRUE if
4580 * moving in @direction left the focus on a focusable location inside
4581 * that widget, and %FALSE if moving in @direction moved the focus
4582 * outside the widget. If returning %TRUE, widgets normally
4583 * call gtk_widget_grab_focus() to place the focus accordingly;
4584 * if returning %FALSE, they don't modify the current focus location.
4586 * This function replaces gtk_container_focus() from GTK+ 1.2. It was
4587 * necessary to check that the child was visible, sensitive, and
4588 * focusable before calling
4589 * gtk_container_focus(). gtk_widget_child_focus() returns %FALSE if
4590 * the widget is not currently in a focusable state, so there's no
4591 * need for those checks.
4593 * Return value: %TRUE if focus ended up inside @widget
4596 gtk_widget_child_focus (GtkWidget *widget,
4597 GtkDirectionType direction)
4599 gboolean return_val;
4601 g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
4603 if (!GTK_WIDGET_VISIBLE (widget) ||
4604 !GTK_WIDGET_IS_SENSITIVE (widget))
4607 /* child widgets must set CAN_FOCUS, containers
4608 * don't have to though.
4610 if (!GTK_IS_CONTAINER (widget) &&
4611 !GTK_WIDGET_CAN_FOCUS (widget))
4614 gtk_signal_emit (GTK_OBJECT (widget),
4615 widget_signals[FOCUS],
4616 direction, &return_val);
4622 * gtk_widget_set_uposition:
4623 * @widget: a #GtkWidget
4624 * @x: x position; -1 to unset x; -2 to leave x unchanged
4625 * @y: y position; -1 to unset y; -2 to leave y unchanged
4628 * Sets the position of a widget. The funny "u" in the name comes from
4629 * the "user position" hint specified by the X Window System, and
4630 * exists for legacy reasons. This function doesn't work if a widget
4631 * is inside a container; it's only really useful on #GtkWindow.
4633 * Don't use this function to center dialogs over the main application
4634 * window; most window managers will do the centering on your behalf
4635 * if you call gtk_window_set_transient_for(), and it's really not
4636 * possible to get the centering to work correctly in all cases from
4637 * application code. But if you insist, use gtk_window_set_position()
4638 * to set #GTK_WIN_POS_CENTER_ON_PARENT, don't do the centering
4641 * Note that although @x and @y can be individually unset, the position
4642 * is not honoured unless both @x and @y are set.
4645 gtk_widget_set_uposition (GtkWidget *widget,
4649 /* FIXME this function is the only place that aux_info->x and
4650 * aux_info->y are even used I believe, and this function is
4651 * deprecated. Should be cleaned up.
4654 GtkWidgetAuxInfo *aux_info;
4656 g_return_if_fail (GTK_IS_WIDGET (widget));
4658 aux_info =_gtk_widget_get_aux_info (widget, TRUE);
4663 aux_info->x_set = FALSE;
4666 aux_info->x_set = TRUE;
4674 aux_info->y_set = FALSE;
4677 aux_info->y_set = TRUE;
4682 if (GTK_IS_WINDOW (widget) && aux_info->x_set && aux_info->y_set)
4683 _gtk_window_reposition (GTK_WINDOW (widget), aux_info->x, aux_info->y);
4685 if (GTK_WIDGET_VISIBLE (widget) && widget->parent)
4686 gtk_widget_size_allocate (widget, &widget->allocation);
4690 * gtk_widget_set_usize:
4691 * @widget: a #GtkWidget
4692 * @width: minimum width, or -1 to unset
4693 * @height: minimum height, or -1 to unset
4695 * This function is deprecated; use gtk_widget_set_size_request()
4698 * Sets the minimum size of a widget; that is, the widget's size
4699 * request will be @width by @height. You can use this function to
4700 * force a widget to be either larger or smaller than it is. The
4701 * strange "usize" name dates from the early days of GTK+, and derives
4702 * from X Window System terminology. In many cases,
4703 * gtk_window_set_default_size() is a better choice for toplevel
4704 * windows than this function; setting the default size will still
4705 * allow users to shrink the window. Setting the usize will force them
4706 * to leave the window at least as large as the usize. When dealing
4707 * with window sizes, gtk_window_set_geometry_hints() can be a useful
4710 * Note the inherent danger of setting any fixed size - themes,
4711 * translations into other languages, different fonts, and user action
4712 * can all change the appropriate size for a given widget. So, it's
4713 * basically impossible to hardcode a size that will always be
4718 gtk_widget_set_usize (GtkWidget *widget,
4722 GtkWidgetAuxInfo *aux_info;
4724 g_return_if_fail (GTK_IS_WIDGET (widget));
4726 g_object_freeze_notify (G_OBJECT (widget));
4728 aux_info =_gtk_widget_get_aux_info (widget, TRUE);
4732 g_object_notify (G_OBJECT (widget), "width_request");
4733 aux_info->width = width;
4737 g_object_notify (G_OBJECT (widget), "height_request");
4738 aux_info->height = height;
4741 if (GTK_WIDGET_VISIBLE (widget))
4742 gtk_widget_queue_resize (widget);
4744 g_object_thaw_notify (G_OBJECT (widget));
4748 * gtk_widget_set_size_request:
4749 * @widget: a #GtkWidget
4750 * @width: width @widget should request, or -1 to unset
4751 * @height: height @widget should request, or -1 to unset
4753 * Sets the minimum size of a widget; that is, the widget's size
4754 * request will be @width by @height. You can use this function to
4755 * force a widget to be either larger or smaller than it normally
4758 * In most cases, gtk_window_set_default_size() is a better choice for
4759 * toplevel windows than this function; setting the default size will
4760 * still allow users to shrink the window. Setting the size request
4761 * will force them to leave the window at least as large as the size
4762 * request. When dealing with window sizes,
4763 * gtk_window_set_geometry_hints() can be a useful function as well.
4765 * Note the inherent danger of setting any fixed size - themes,
4766 * translations into other languages, different fonts, and user action
4767 * can all change the appropriate size for a given widget. So, it's
4768 * basically impossible to hardcode a size that will always be
4771 * The size request of a widget is the smallest size a widget can
4772 * accept while still functioning well and drawing itself correctly.
4773 * However in some strange cases a widget may be allocated less than
4774 * its requested size, and in many cases a widget may be allocated more
4775 * space than it requested.
4777 * If the size request in a given direction is -1 (unset), then
4778 * the "natural" size request of the widget will be used instead.
4780 * Widgets can't actually be allocated a size less than 1 by 1, but
4781 * you can pass 0,0 to this function to mean "as small as possible."
4784 gtk_widget_set_size_request (GtkWidget *widget,
4788 g_return_if_fail (GTK_IS_WIDGET (widget));
4789 g_return_if_fail (width >= -1);
4790 g_return_if_fail (height >= -1);
4797 gtk_widget_set_usize (widget, width, height);
4802 * gtk_widget_get_size_request:
4803 * @widget: a #GtkWidget
4804 * @width: return location for width, or %NULL
4805 * @height: return location for height, or %NULL
4807 * Gets the size request that was explicitly set for the widget using
4808 * gtk_widget_set_size_request(). A value of -1 stored in @width or
4809 * @height indicates that that dimension has not been set explicitly
4810 * and the natural requisition of the widget will be used intead. See
4811 * gtk_widget_set_size_request(). To get the size a widget will
4812 * actually use, call gtk_widget_size_request() instead of
4818 gtk_widget_get_size_request (GtkWidget *widget,
4822 GtkWidgetAuxInfo *aux_info;
4824 g_return_if_fail (GTK_IS_WIDGET (widget));
4826 aux_info = _gtk_widget_get_aux_info (widget, FALSE);
4829 *width = aux_info ? aux_info->width : -1;
4832 *height = aux_info ? aux_info->height : -1;
4836 * gtk_widget_set_events:
4837 * @widget: a #GtkWidget
4838 * @events: event mask
4840 * Sets the event mask (see #GdkEventMask) for a widget. The event
4841 * mask determines which events a widget will receive. Keep in mind
4842 * that different widgets have different default event masks, and by
4843 * changing the event mask you may disrupt a widget's functionality,
4844 * so be careful. This function must be called while a widget is
4845 * unrealized. Consider gtk_widget_add_events() for widgets that are
4846 * already realized, or if you want to preserve the existing event
4847 * mask. This function can't be used with #GTK_NO_WINDOW widgets;
4848 * to get events on those widgets, place them inside a #GtkEventBox
4849 * and receive events on the event box.
4853 gtk_widget_set_events (GtkWidget *widget,
4858 g_return_if_fail (GTK_IS_WIDGET (widget));
4859 g_return_if_fail (!GTK_WIDGET_REALIZED (widget));
4861 eventp = gtk_object_get_data_by_id (GTK_OBJECT (widget), quark_event_mask);
4866 eventp = g_new (gint, 1);
4869 gtk_object_set_data_by_id (GTK_OBJECT (widget), quark_event_mask, eventp);
4874 gtk_object_remove_data_by_id (GTK_OBJECT (widget), quark_event_mask);
4877 g_object_notify (G_OBJECT (widget), "events");
4881 * gtk_widget_add_events:
4882 * @widget: a #GtkWidget
4883 * @events: an event mask, see #GdkEventMask
4885 * Adds the events in the bitfield @events to the event mask for
4886 * @widget. See gtk_widget_set_events() for details.
4890 gtk_widget_add_events (GtkWidget *widget,
4895 g_return_if_fail (GTK_IS_WIDGET (widget));
4897 eventp = gtk_object_get_data_by_id (GTK_OBJECT (widget), quark_event_mask);
4903 eventp = g_new (gint, 1);
4908 gtk_object_set_data_by_id (GTK_OBJECT (widget), quark_event_mask, eventp);
4913 gtk_object_remove_data_by_id (GTK_OBJECT (widget), quark_event_mask);
4916 if (GTK_WIDGET_REALIZED (widget))
4918 if (GTK_WIDGET_NO_WINDOW (widget))
4920 GList *children = gdk_window_get_children (widget->window);
4921 GList *tmp_list = children;
4925 GdkWindow *window = tmp_list->data;
4928 gdk_window_get_user_data (window, &user_data);
4929 if (user_data == widget)
4930 gdk_window_set_events (window, gdk_window_get_events (window) | events);
4931 tmp_list = tmp_list->next;
4934 g_list_free (children);
4938 gdk_window_set_events (widget->window, gdk_window_get_events (widget->window) | events);
4942 g_object_notify (G_OBJECT (widget), "events");
4946 * gtk_widget_set_extension_events:
4947 * @widget: a #GtkWidget
4948 * @mode: bitfield of extension events to receive
4950 * Sets the extension events mask to @mode. See #GdkExtensionMode
4951 * and gdk_input_set_extension_events().
4955 gtk_widget_set_extension_events (GtkWidget *widget,
4956 GdkExtensionMode mode)
4958 GdkExtensionMode *modep;
4960 g_return_if_fail (GTK_IS_WIDGET (widget));
4962 modep = gtk_object_get_data_by_id (GTK_OBJECT (widget), quark_extension_event_mode);
4965 modep = g_new (GdkExtensionMode, 1);
4968 gtk_object_set_data_by_id (GTK_OBJECT (widget), quark_extension_event_mode, modep);
4969 g_object_notify (G_OBJECT (widget), "extension_events");
4973 * gtk_widget_get_toplevel:
4974 * @widget: a #GtkWidget
4976 * This function returns the topmost widget in the container hierarchy
4977 * @widget is a part of. If @widget has no parent widgets, it will be
4978 * returned as the topmost widget. No reference will be added to the
4979 * returned widget; it should not be unreferenced.
4981 * Note the difference in behavior vs. gtk_widget_get_ancestor();
4982 * <literal>gtk_widget_get_ancestor (widget, GTK_TYPE_WINDOW)</literal>
4984 * %NULL if @widget wasn't inside a toplevel window, and if the
4985 * window was inside a #GtkWindow-derived widget which was in turn
4986 * inside the toplevel #GtkWindow. While the second case may
4987 * seem unlikely, it actually happens when a #GtkPlug is embedded
4988 * inside a #GtkSocket within the same application.
4990 * To reliably find the toplevel #GtkWindow, use
4991 * gtk_widget_get_toplevel() and check if the %TOPLEVEL flags
4992 * is set on the result.
4993 * <informalexample><programlisting>
4994 * <!>GtkWidget *toplevel = gtk_widget_get_toplevel (widget);
4995 * <!>if (GTK_WIDGET_TOPLEVEL (toplevel))
4997 * <!> [ Perform action on toplevel. ]
4999 * </programlisting></informalexample>
5001 * Return value: the topmost ancestor of @widget, or @widget itself if there's no ancestor.
5004 gtk_widget_get_toplevel (GtkWidget *widget)
5006 g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
5008 while (widget->parent)
5009 widget = widget->parent;
5015 * gtk_widget_get_ancestor:
5016 * @widget: a #GtkWidget
5017 * @widget_type: ancestor type
5019 * Gets the first ancestor of @widget with type @widget_type. For example,
5020 * <literal>gtk_widget_get_ancestor (widget, GTK_TYPE_BOX)</literal> gets the
5021 * first #GtkBox that's
5022 * an ancestor of @widget. No reference will be added to the returned widget;
5023 * it should not be unreferenced. See note about checking for a toplevel
5024 * #GtkWindow in the docs for gtk_widget_get_toplevel().
5026 * Return value: the ancestor widget, or %NULL if not found
5029 gtk_widget_get_ancestor (GtkWidget *widget,
5030 GtkType widget_type)
5032 g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
5034 while (widget && !gtk_type_is_a (GTK_WIDGET_TYPE (widget), widget_type))
5035 widget = widget->parent;
5037 if (!(widget && gtk_type_is_a (GTK_WIDGET_TYPE (widget), widget_type)))
5044 * gtk_widget_get_colormap:
5045 * @widget: a #GtkWidget
5047 * Gets the colormap that will be used to render @widget. No reference will
5048 * be added to the returned colormap; it should not be unreferenced.
5050 * Return value: the colormap used by @widget
5053 gtk_widget_get_colormap (GtkWidget *widget)
5055 GdkColormap *colormap;
5057 g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
5061 colormap = gdk_window_get_colormap (widget->window);
5062 /* If window was destroyed previously, we'll get NULL here */
5069 colormap = gtk_object_get_data_by_id (GTK_OBJECT (widget), quark_colormap);
5073 widget = widget->parent;
5076 return gtk_widget_get_default_colormap ();
5080 * gtk_widget_get_visual:
5081 * @widget: a #GtkWidget
5083 * Gets the visual that will be used to render @widget.
5085 * Return value: the visual for @widget
5088 gtk_widget_get_visual (GtkWidget *widget)
5090 g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
5092 return gdk_colormap_get_visual (gtk_widget_get_colormap (widget));
5096 * gtk_widget_get_settings:
5097 * @widget: a #GtkWidget
5099 * Gets the settings object holding the settings (global property
5100 * settings, RC file information, etc) used for this widget.
5102 * Return value: the relevant #GtkSettings object
5105 gtk_widget_get_settings (GtkWidget *widget)
5107 return gtk_settings_get_default ();
5111 * gtk_widget_set_colormap:
5112 * @widget: a #GtkWidget
5113 * @colormap: a colormap
5115 * Sets the colormap for the widget to the given value. Widget must not
5116 * have been previously realized. This probably should only be used
5117 * from an <function>init()</function> function (i.e. from the constructor
5122 gtk_widget_set_colormap (GtkWidget *widget,
5123 GdkColormap *colormap)
5125 g_return_if_fail (GTK_IS_WIDGET (widget));
5126 g_return_if_fail (!GTK_WIDGET_REALIZED (widget));
5127 g_return_if_fail (GDK_IS_COLORMAP (colormap));
5129 g_object_ref (G_OBJECT (colormap));
5131 g_object_set_qdata_full (G_OBJECT (widget),
5134 (GtkDestroyNotify) g_object_unref);
5138 * gtk_widget_get_events:
5139 * @widget: a #GtkWidget
5141 * Returns the event mask for the widget (a bitfield containing flags
5142 * from the #GdkEventMask enumeration). These are the events that the widget
5145 * Return value: event mask for @widget
5148 gtk_widget_get_events (GtkWidget *widget)
5152 g_return_val_if_fail (GTK_IS_WIDGET (widget), 0);
5154 events = gtk_object_get_data_by_id (GTK_OBJECT (widget), quark_event_mask);
5162 * gtk_widget_get_extension_events:
5163 * @widget: a #GtkWidget
5165 * Retrieves the extension events the widget will receive; see
5166 * gdk_input_set_extension_events().
5168 * Return value: extension events for @widget
5171 gtk_widget_get_extension_events (GtkWidget *widget)
5173 GdkExtensionMode *mode;
5175 g_return_val_if_fail (GTK_IS_WIDGET (widget), 0);
5177 mode = gtk_object_get_data_by_id (GTK_OBJECT (widget), quark_extension_event_mode);
5185 * gtk_widget_get_pointer:
5186 * @widget: a #GtkWidget
5187 * @x: return location for the X coordinate, or %NULL
5188 * @y: return location for the Y coordinate, or %NULL
5190 * Obtains the location of the mouse pointer in widget coordinates.
5191 * Widget coordinates are a bit odd; for historical reasons, they are
5192 * defined as @widget->window coordinates for widgets that are not
5193 * #GTK_NO_WINDOW widgets, and are relative to @widget->allocation.x,
5194 * @widget->allocation.y for widgets that are #GTK_NO_WINDOW widgets.
5198 gtk_widget_get_pointer (GtkWidget *widget,
5202 g_return_if_fail (GTK_IS_WIDGET (widget));
5209 if (GTK_WIDGET_REALIZED (widget))
5211 gdk_window_get_pointer (widget->window, x, y, NULL);
5213 if (GTK_WIDGET_NO_WINDOW (widget))
5216 *x -= widget->allocation.x;
5218 *y -= widget->allocation.y;
5224 * gtk_widget_is_ancestor:
5225 * @widget: a #GtkWidget
5226 * @ancestor: another #GtkWidget
5228 * Determines whether @widget is somewhere inside @ancestor, possibly with
5229 * intermediate containers.
5231 * Return value: %TRUE if @ancestor contains @widget as a child, grandchild, great grandchild, etc.
5234 gtk_widget_is_ancestor (GtkWidget *widget,
5235 GtkWidget *ancestor)
5237 g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
5238 g_return_val_if_fail (ancestor != NULL, FALSE);
5242 if (widget->parent == ancestor)
5244 widget = widget->parent;
5250 static GQuark quark_composite_name = 0;
5253 * gtk_widget_set_composite_name:
5254 * @widget: a #GtkWidget.
5255 * @name: the name to set.
5257 * Sets a widgets composite name. The widget must be
5258 * a composite child of its parent; see gtk_widget_push_composite_child().
5261 gtk_widget_set_composite_name (GtkWidget *widget,
5264 g_return_if_fail (GTK_IS_WIDGET (widget));
5265 g_return_if_fail (GTK_WIDGET_COMPOSITE_CHILD (widget));
5266 g_return_if_fail (name != NULL);
5268 if (!quark_composite_name)
5269 quark_composite_name = g_quark_from_static_string ("gtk-composite-name");
5271 gtk_object_set_data_by_id_full (GTK_OBJECT (widget),
5272 quark_composite_name,
5278 * gtk_widget_get_composite_name:
5279 * @widget: a #GtkWidget.
5280 * @returns: the composite name of @widget, or %NULL if @widget is not
5281 * a composite child. The string should not be freed when it is no
5284 * Obtains the composite name of a widget.
5287 gtk_widget_get_composite_name (GtkWidget *widget)
5289 g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
5291 if (GTK_WIDGET_COMPOSITE_CHILD (widget) && widget->parent)
5292 return _gtk_container_child_composite_name (GTK_CONTAINER (widget->parent),
5299 * gtk_widget_push_composite_child:
5301 * Makes all newly-created widgets as composite children until
5302 * the corresponding gtk_widget_pop_composite_child() call.
5304 * A composite child is a child that's an implementation detail of the
5305 * container it's inside and should not be visible to people using the
5306 * container. Composite children aren't treated differently by GTK (but
5307 * see gtk_container_foreach() vs. gtk_container_forall()), but e.g. GUI
5308 * builders might want to treat them in a different way.
5310 * Here is a simple example:
5311 * <informalexample><programlisting>
5312 * <!> gtk_widget_push_composite_child (<!>);
5313 * <!> scrolled_window->hscrollbar = gtk_hscrollbar_new (hadjustment);
5314 * <!> gtk_widget_set_composite_name (scrolled_window->hscrollbar, "hscrollbar");
5315 * <!> gtk_widget_pop_composite_child (<!>);
5316 * <!> gtk_widget_set_parent (scrolled_window->hscrollbar,
5317 * <!> GTK_WIDGET (scrolled_window));
5318 * <!> gtk_widget_ref (scrolled_window->hscrollbar);
5319 * </programlisting></informalexample>
5322 gtk_widget_push_composite_child (void)
5324 composite_child_stack++;
5328 * gtk_widget_pop_composite_child:
5330 * Cancels the effect of a previous call to gtk_widget_push_composite_child().
5333 gtk_widget_pop_composite_child (void)
5335 if (composite_child_stack)
5336 composite_child_stack--;
5340 * gtk_widget_push_colormap:
5341 * @cmap: a #GdkColormap
5343 * Pushes @cmap onto a global stack of colormaps; the topmost
5344 * colormap on the stack will be used to create all widgets.
5345 * Remove @cmap with gtk_widget_pop_colormap(). There's little
5346 * reason to use this function.
5350 gtk_widget_push_colormap (GdkColormap *cmap)
5352 g_return_if_fail (GDK_IS_COLORMAP (cmap));
5354 colormap_stack = g_slist_prepend (colormap_stack, cmap);
5358 * gtk_widget_pop_colormap:
5360 * Removes a colormap pushed with gtk_widget_push_colormap().
5364 gtk_widget_pop_colormap (void)
5367 colormap_stack = g_slist_delete_link (colormap_stack, colormap_stack);
5371 * gtk_widget_set_default_colormap:
5372 * @colormap: a #GdkColormap
5374 * Sets the default colormap to use when creating widgets.
5375 * gtk_widget_push_colormap() is a better function to use if
5376 * you only want to affect a few widgets, rather than all widgets.
5380 gtk_widget_set_default_colormap (GdkColormap *colormap)
5382 g_return_if_fail (GDK_IS_COLORMAP (colormap));
5384 if (default_colormap != colormap)
5386 if (default_colormap)
5387 gdk_colormap_unref (default_colormap);
5388 default_colormap = colormap;
5389 if (default_colormap)
5390 gdk_colormap_ref (default_colormap);
5395 * gtk_widget_get_default_colormap:
5397 * Obtains the default colormap used to create widgets.
5399 * Return value: default widget colormap
5402 gtk_widget_get_default_colormap (void)
5404 if (!default_colormap)
5405 gtk_widget_set_default_colormap (gdk_rgb_get_colormap ());
5407 return default_colormap;
5411 * gtk_widget_get_default_visual:
5413 * Obtains the visual of the default colormap. Not really useful;
5414 * used to be useful before gdk_colormap_get_visual() existed.
5416 * Return value: visual of the default colormap
5419 gtk_widget_get_default_visual (void)
5421 return gdk_colormap_get_visual (gtk_widget_get_default_colormap ());
5425 gtk_widget_emit_direction_changed (GtkWidget *widget,
5426 GtkTextDirection old_dir)
5428 PangoContext *context = gtk_widget_peek_pango_context (widget);
5431 pango_context_set_base_dir (context,
5432 gtk_widget_get_direction (widget) == GTK_TEXT_DIR_LTR ?
5433 PANGO_DIRECTION_LTR : PANGO_DIRECTION_RTL);
5435 gtk_signal_emit (GTK_OBJECT (widget), widget_signals[DIRECTION_CHANGED], old_dir);
5439 * gtk_widget_set_direction:
5440 * @widget: a #GtkWidget
5441 * @dir: the new direction
5443 * Sets the reading direction on a particular widget. This direction
5444 * controls the primary direction for widgets containing text,
5445 * and also the direction in which the children of a container are
5446 * packed. The ability to set the direction is present in order
5447 * so that correct localization into languages with right-to-left
5448 * reading directions can be done. Generally, applications will
5449 * let the default reading direction present, except for containers
5450 * where the containers are arranged in an order that is explicitely
5451 * visual rather than logical (such as buttons for text justification).
5453 * If the direction is set to %GTK_TEXT_DIR_NONE, then the value
5454 * set by gtk_widget_set_default_direction() will be used.
5457 gtk_widget_set_direction (GtkWidget *widget,
5458 GtkTextDirection dir)
5460 GtkTextDirection old_dir;
5462 g_return_if_fail (GTK_IS_WIDGET (widget));
5463 g_return_if_fail (dir >= GTK_TEXT_DIR_NONE && dir <= GTK_TEXT_DIR_RTL);
5465 old_dir = gtk_widget_get_direction (widget);
5467 if (dir == GTK_TEXT_DIR_NONE)
5468 GTK_PRIVATE_UNSET_FLAG (widget, GTK_DIRECTION_SET);
5471 GTK_PRIVATE_SET_FLAG (widget, GTK_DIRECTION_SET);
5472 if (dir == GTK_TEXT_DIR_LTR)
5473 GTK_PRIVATE_SET_FLAG (widget, GTK_DIRECTION_LTR);
5475 GTK_PRIVATE_UNSET_FLAG (widget, GTK_DIRECTION_LTR);
5478 if (old_dir != gtk_widget_get_direction (widget))
5479 gtk_widget_emit_direction_changed (widget, old_dir);
5483 * gtk_widget_get_direction:
5484 * @widget: a #GtkWidget
5486 * Gets the reading direction for a particular widget. See
5487 * gtk_widget_set_direction().
5489 * Return value: the reading direction for the widget.
5492 gtk_widget_get_direction (GtkWidget *widget)
5494 g_return_val_if_fail (GTK_IS_WIDGET (widget), GTK_TEXT_DIR_LTR);
5496 if (GTK_WIDGET_DIRECTION_SET (widget))
5497 return GTK_WIDGET_DIRECTION_LTR (widget) ? GTK_TEXT_DIR_LTR : GTK_TEXT_DIR_RTL;
5499 return gtk_default_direction;
5503 gtk_widget_set_default_direction_recurse (GtkWidget *widget, gpointer data)
5505 GtkTextDirection old_dir = GPOINTER_TO_UINT (data);
5507 g_object_ref (G_OBJECT (widget));
5509 if (!GTK_WIDGET_DIRECTION_SET (widget))
5510 gtk_widget_emit_direction_changed (widget, old_dir);
5512 if (GTK_IS_CONTAINER (widget))
5513 gtk_container_forall (GTK_CONTAINER (widget),
5514 gtk_widget_set_default_direction_recurse,
5517 g_object_unref (G_OBJECT (widget));
5521 * gtk_widget_set_default_direction:
5522 * @dir: the new default direction. This cannot be
5523 * %GTK_TEXT_DIR_NONE.
5525 * Sets the default reading direction for widgets where the
5526 * direction has not been explicitly set by gtk_widget_set_direction().
5529 gtk_widget_set_default_direction (GtkTextDirection dir)
5531 g_return_if_fail (dir == GTK_TEXT_DIR_RTL || dir == GTK_TEXT_DIR_LTR);
5533 if (dir != gtk_default_direction)
5535 GList *toplevels, *tmp_list;
5536 GtkTextDirection old_dir = gtk_default_direction;
5538 gtk_default_direction = dir;
5540 tmp_list = toplevels = gtk_window_list_toplevels ();
5541 g_list_foreach (toplevels, (GFunc)g_object_ref, NULL);
5545 gtk_widget_set_default_direction_recurse (tmp_list->data,
5546 GUINT_TO_POINTER (old_dir));
5547 g_object_unref (tmp_list->data);
5548 tmp_list = tmp_list->next;
5551 g_list_free (toplevels);
5556 * gtk_widget_get_default_direction:
5558 * Obtains the current default reading direction. See
5559 * gtk_widget_set_default_direction().
5561 * Return value: the current default direction.
5564 gtk_widget_get_default_direction (void)
5566 return gtk_default_direction;
5570 gtk_widget_dispose (GObject *object)
5572 GtkWidget *widget = GTK_WIDGET (object);
5575 gtk_container_remove (GTK_CONTAINER (widget->parent), widget);
5577 GTK_WIDGET_UNSET_FLAGS (widget, GTK_VISIBLE);
5578 if (GTK_WIDGET_REALIZED (widget))
5579 gtk_widget_unrealize (widget);
5581 G_OBJECT_CLASS (parent_class)->dispose (object);
5585 gtk_widget_real_destroy (GtkObject *object)
5587 /* gtk_object_destroy() will already hold a refcount on object */
5588 GtkWidget *widget = GTK_WIDGET (object);
5590 /* wipe accelerator closures (keep order) */
5591 g_object_set_qdata (G_OBJECT (widget), quark_accel_path, NULL);
5592 g_object_set_qdata (G_OBJECT (widget), quark_accel_closures, NULL);
5594 gtk_grab_remove (widget);
5596 g_object_unref (widget->style);
5597 widget->style = gtk_widget_get_default_style ();
5598 g_object_ref (widget->style);
5600 GTK_OBJECT_CLASS (parent_class)->destroy (object);
5604 gtk_widget_finalize (GObject *object)
5606 GtkWidget *widget = GTK_WIDGET (object);
5607 GtkWidgetAuxInfo *aux_info;
5609 GdkExtensionMode *mode;
5610 GtkAccessible *accessible;
5612 gtk_grab_remove (widget);
5614 g_object_unref (widget->style);
5615 widget->style = NULL;
5618 g_free (widget->name);
5620 aux_info =_gtk_widget_get_aux_info (widget, FALSE);
5622 gtk_widget_aux_info_destroy (aux_info);
5624 events = gtk_object_get_data_by_id (GTK_OBJECT (widget), quark_event_mask);
5628 mode = gtk_object_get_data_by_id (GTK_OBJECT (widget), quark_extension_event_mode);
5632 accessible = gtk_object_get_data_by_id (GTK_OBJECT (widget), quark_accessible_object);
5634 g_object_unref (G_OBJECT (accessible));
5636 G_OBJECT_CLASS (parent_class)->finalize (object);
5639 /*****************************************
5640 * gtk_widget_real_map:
5645 *****************************************/
5648 gtk_widget_real_map (GtkWidget *widget)
5650 g_return_if_fail (GTK_WIDGET_REALIZED (widget) == TRUE);
5652 if (!GTK_WIDGET_MAPPED (widget))
5654 GTK_WIDGET_SET_FLAGS (widget, GTK_MAPPED);
5656 if (!GTK_WIDGET_NO_WINDOW (widget))
5657 gdk_window_show (widget->window);
5661 /*****************************************
5662 * gtk_widget_real_unmap:
5667 *****************************************/
5670 gtk_widget_real_unmap (GtkWidget *widget)
5672 if (GTK_WIDGET_MAPPED (widget))
5674 GTK_WIDGET_UNSET_FLAGS (widget, GTK_MAPPED);
5676 if (!GTK_WIDGET_NO_WINDOW (widget))
5677 gdk_window_hide (widget->window);
5681 /*****************************************
5682 * gtk_widget_real_realize:
5687 *****************************************/
5690 gtk_widget_real_realize (GtkWidget *widget)
5692 g_return_if_fail (GTK_WIDGET_NO_WINDOW (widget));
5694 GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
5697 widget->window = gtk_widget_get_parent_window (widget);
5698 gdk_window_ref (widget->window);
5700 widget->style = gtk_style_attach (widget->style, widget->window);
5703 /*****************************************
5704 * gtk_widget_real_unrealize:
5709 *****************************************/
5712 gtk_widget_real_unrealize (GtkWidget *widget)
5714 if (GTK_WIDGET_MAPPED (widget))
5715 gtk_widget_real_unmap (widget);
5717 GTK_WIDGET_UNSET_FLAGS (widget, GTK_MAPPED);
5719 /* printf ("unrealizing %s\n", gtk_type_name (GTK_OBJECT (widget)->klass->type));
5722 /* We must do unrealize child widget BEFORE container widget.
5723 * gdk_window_destroy() destroys specified xwindow and its sub-xwindows.
5724 * So, unrealizing container widget bofore its children causes the problem
5725 * (for example, gdk_ic_destroy () with destroyed window causes crash. )
5728 if (GTK_IS_CONTAINER (widget))
5729 gtk_container_forall (GTK_CONTAINER (widget),
5730 (GtkCallback) gtk_widget_unrealize,
5733 gtk_style_detach (widget->style);
5734 if (!GTK_WIDGET_NO_WINDOW (widget))
5736 gdk_window_set_user_data (widget->window, NULL);
5737 gdk_window_destroy (widget->window);
5738 widget->window = NULL;
5742 gdk_window_unref (widget->window);
5743 widget->window = NULL;
5746 gtk_selection_remove_all (widget);
5748 GTK_WIDGET_UNSET_FLAGS (widget, GTK_REALIZED);
5752 gtk_widget_real_size_request (GtkWidget *widget,
5753 GtkRequisition *requisition)
5755 requisition->width = widget->requisition.width;
5756 requisition->height = widget->requisition.height;
5760 * _gtk_widget_peek_colormap:
5762 * Returns colormap currently pushed by gtk_widget_push_colormap, if any.
5764 * Return value: the currently pushed colormap, or %NULL if there is none.
5767 _gtk_widget_peek_colormap (void)
5770 return (GdkColormap*) colormap_stack->data;
5775 gtk_widget_propagate_state (GtkWidget *widget,
5780 /* don't call this function with state==GTK_STATE_INSENSITIVE,
5781 * parent_sensitive==TRUE on a sensitive widget
5784 old_state = GTK_WIDGET_STATE (widget);
5786 if (data->parent_sensitive)
5788 GTK_WIDGET_SET_FLAGS (widget, GTK_PARENT_SENSITIVE);
5790 if (GTK_WIDGET_IS_SENSITIVE (widget))
5792 if (data->state_restoration)
5793 GTK_WIDGET_STATE (widget) = GTK_WIDGET_SAVED_STATE (widget);
5795 GTK_WIDGET_STATE (widget) = data->state;
5799 GTK_WIDGET_STATE (widget) = GTK_STATE_INSENSITIVE;
5800 if (!data->state_restoration &&
5801 data->state != GTK_STATE_INSENSITIVE)
5802 GTK_WIDGET_SAVED_STATE (widget) = data->state;
5807 GTK_WIDGET_UNSET_FLAGS (widget, GTK_PARENT_SENSITIVE);
5808 if (!data->state_restoration)
5810 if (data->state != GTK_STATE_INSENSITIVE)
5811 GTK_WIDGET_SAVED_STATE (widget) = data->state;
5813 else if (GTK_WIDGET_STATE (widget) != GTK_STATE_INSENSITIVE)
5814 GTK_WIDGET_SAVED_STATE (widget) = GTK_WIDGET_STATE (widget);
5815 GTK_WIDGET_STATE (widget) = GTK_STATE_INSENSITIVE;
5818 if (gtk_widget_is_focus (widget) && !GTK_WIDGET_IS_SENSITIVE (widget))
5822 window = gtk_widget_get_toplevel (widget);
5823 if (window && GTK_WIDGET_TOPLEVEL (window))
5824 gtk_window_set_focus (GTK_WINDOW (window), NULL);
5827 if (old_state != GTK_WIDGET_STATE (widget))
5829 gtk_widget_ref (widget);
5831 if (!GTK_WIDGET_IS_SENSITIVE (widget) && GTK_WIDGET_HAS_GRAB (widget))
5832 gtk_grab_remove (widget);
5834 gtk_signal_emit (GTK_OBJECT (widget), widget_signals[STATE_CHANGED], old_state);
5837 if (GTK_IS_CONTAINER (widget))
5839 data->parent_sensitive = (GTK_WIDGET_IS_SENSITIVE (widget) != FALSE);
5840 data->state = GTK_WIDGET_STATE (widget);
5841 if (data->use_forall)
5842 gtk_container_forall (GTK_CONTAINER (widget),
5843 (GtkCallback) gtk_widget_propagate_state,
5846 gtk_container_foreach (GTK_CONTAINER (widget),
5847 (GtkCallback) gtk_widget_propagate_state,
5850 gtk_widget_unref (widget);
5855 * _gtk_widget_get_aux_info:
5856 * @widget: a #GtkWidget
5857 * @create: if %TRUE, create the structure if it doesn't exist
5859 * Get the #GtkWidgetAuxInfo structure for the widget.
5861 * Return value: the #GtkAuxInfo structure for the widget, or
5862 * %NULL if @create is %FALSE and one doesn't already exist.
5865 _gtk_widget_get_aux_info (GtkWidget *widget,
5868 GtkWidgetAuxInfo *aux_info;
5870 aux_info = gtk_object_get_data_by_id (GTK_OBJECT (widget), quark_aux_info);
5871 if (!aux_info && create)
5873 if (!aux_info_mem_chunk)
5874 aux_info_mem_chunk = g_mem_chunk_new ("widget aux info mem chunk",
5875 sizeof (GtkWidgetAuxInfo),
5876 1024, G_ALLOC_AND_FREE);
5877 aux_info = g_chunk_new (GtkWidgetAuxInfo, aux_info_mem_chunk);
5879 aux_info->width = -1;
5880 aux_info->height = -1;
5883 aux_info->x_set = FALSE;
5884 aux_info->y_set = FALSE;
5885 gtk_object_set_data_by_id (GTK_OBJECT (widget), quark_aux_info, aux_info);
5891 /*****************************************
5892 * gtk_widget_aux_info_destroy:
5897 *****************************************/
5900 gtk_widget_aux_info_destroy (GtkWidgetAuxInfo *aux_info)
5902 g_mem_chunk_free (aux_info_mem_chunk, aux_info);
5906 gtk_widget_shape_info_destroy (GtkWidgetShapeInfo *info)
5908 gdk_drawable_unref (info->shape_mask);
5913 * gtk_widget_shape_combine_mask:
5914 * @widget: a #GtkWidget.
5915 * @shape_mask: shape to be added, or %NULL to remove an existing shape.
5916 * @offset_x: X position of shape mask with respect to @window.
5917 * @offset_y: Y position of shape mask with respect to @window.
5919 * Sets a shape for this widget's GDK window. This allows for
5920 * transparent windows etc., see gdk_window_shape_combine_mask()
5921 * for more information.
5924 gtk_widget_shape_combine_mask (GtkWidget *widget,
5925 GdkBitmap *shape_mask,
5929 GtkWidgetShapeInfo* shape_info;
5931 g_return_if_fail (GTK_IS_WIDGET (widget));
5932 /* set_shape doesn't work on widgets without gdk window */
5933 g_return_if_fail (!GTK_WIDGET_NO_WINDOW (widget));
5937 GTK_PRIVATE_UNSET_FLAG (widget, GTK_HAS_SHAPE_MASK);
5940 gdk_window_shape_combine_mask (widget->window, NULL, 0, 0);
5942 g_object_set_qdata (G_OBJECT (widget), quark_shape_info, NULL);
5946 GTK_PRIVATE_SET_FLAG (widget, GTK_HAS_SHAPE_MASK);
5948 shape_info = g_new (GtkWidgetShapeInfo, 1);
5949 g_object_set_qdata_full (G_OBJECT (widget), quark_shape_info, shape_info,
5950 (GDestroyNotify) gtk_widget_shape_info_destroy);
5952 shape_info->shape_mask = gdk_drawable_ref (shape_mask);
5953 shape_info->offset_x = offset_x;
5954 shape_info->offset_y = offset_y;
5956 /* set shape if widget has a gdk window allready.
5957 * otherwise the shape is scheduled to be set by gtk_widget_realize.
5960 gdk_window_shape_combine_mask (widget->window, shape_mask,
5961 offset_x, offset_y);
5966 gtk_reset_shapes_recurse (GtkWidget *widget,
5972 gdk_window_get_user_data (window, &data);
5976 gdk_window_shape_combine_mask (window, NULL, 0, 0);
5977 for (list = gdk_window_peek_children (window); list; list = list->next)
5978 gtk_reset_shapes_recurse (widget, list->data);
5982 * gtk_widget_reset_shapes:
5983 * @widget: a #GtkWidget.
5985 * Recursively resets the shape on this widget and its descendants.
5988 gtk_widget_reset_shapes (GtkWidget *widget)
5990 g_return_if_fail (GTK_IS_WIDGET (widget));
5991 g_return_if_fail (GTK_WIDGET_REALIZED (widget));
5993 if (!GTK_WIDGET_HAS_SHAPE_MASK (widget))
5994 gtk_reset_shapes_recurse (widget, widget->window);
5999 * @widget: a #GtkWidget
6001 * Adds a reference to a widget. This function is exactly the same
6002 * as calling g_object_ref(), and exists mostly for historical
6003 * reasons. It can still be convenient to avoid casting a widget
6004 * to a #GObject, it saves a small amount of typing.
6006 * Return value: the widget that was referenced
6009 gtk_widget_ref (GtkWidget *widget)
6011 g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
6013 return (GtkWidget*) g_object_ref ((GObject*) widget);
6018 * @widget: a #GtkWidget
6020 * Inverse of gtk_widget_ref(). Equivalent to g_object_unref().
6024 gtk_widget_unref (GtkWidget *widget)
6026 g_return_if_fail (GTK_IS_WIDGET (widget));
6028 g_object_unref ((GObject*) widget);
6036 gtk_widget_class_install_style_property_parser (GtkWidgetClass *class,
6038 GtkRcPropertyParser parser)
6040 g_return_if_fail (GTK_IS_WIDGET_CLASS (class));
6041 g_return_if_fail (G_IS_PARAM_SPEC (pspec));
6042 g_return_if_fail (pspec->flags & G_PARAM_READABLE);
6043 g_return_if_fail (!(pspec->flags & (G_PARAM_CONSTRUCT_ONLY | G_PARAM_CONSTRUCT)));
6045 if (g_param_spec_pool_lookup (style_property_spec_pool, pspec->name, G_OBJECT_CLASS_TYPE (class), FALSE))
6047 g_warning (G_STRLOC ": class `%s' already contains a style property named `%s'",
6048 G_OBJECT_CLASS_NAME (class),
6053 g_param_spec_ref (pspec);
6054 g_param_spec_sink (pspec);
6055 g_param_spec_set_qdata (pspec, quark_property_parser, parser);
6056 g_param_spec_pool_insert (style_property_spec_pool, pspec, G_OBJECT_CLASS_TYPE (class));
6060 gtk_widget_class_install_style_property (GtkWidgetClass *class,
6063 GtkRcPropertyParser parser;
6065 g_return_if_fail (GTK_IS_WIDGET_CLASS (class));
6066 g_return_if_fail (G_IS_PARAM_SPEC (pspec));
6068 parser = _gtk_rc_property_parser_from_type (G_PARAM_SPEC_VALUE_TYPE (pspec));
6070 gtk_widget_class_install_style_property_parser (class, pspec, parser);
6074 * gtk_widget_style_get_property:
6075 * @widget: a #GtkWidget
6076 * @property_name: the name of a style property
6077 * @value: location to return the property value
6079 * Gets the value of a style property of @widget.
6082 gtk_widget_style_get_property (GtkWidget *widget,
6083 const gchar *property_name,
6088 g_return_if_fail (GTK_IS_WIDGET (widget));
6089 g_return_if_fail (property_name != NULL);
6090 g_return_if_fail (G_IS_VALUE (value));
6092 g_object_ref (widget);
6093 pspec = g_param_spec_pool_lookup (style_property_spec_pool,
6095 G_OBJECT_TYPE (widget),
6098 g_warning ("%s: widget class `%s' has no property named `%s'",
6100 G_OBJECT_TYPE_NAME (widget),
6104 const GValue *peek_value;
6106 peek_value = _gtk_style_peek_property_value (widget->style,
6107 G_OBJECT_TYPE (widget),
6109 g_param_spec_get_qdata (pspec, quark_property_parser));
6111 /* auto-conversion of the caller's value type
6113 if (G_VALUE_TYPE (value) == G_PARAM_SPEC_VALUE_TYPE (pspec))
6114 g_value_copy (peek_value, value);
6115 else if (g_value_type_transformable (G_PARAM_SPEC_VALUE_TYPE (pspec), G_VALUE_TYPE (value)))
6116 g_value_transform (peek_value, value);
6118 g_warning ("can't retrieve style property `%s' of type `%s' as value of type `%s'",
6120 g_type_name (G_PARAM_SPEC_VALUE_TYPE (pspec)),
6121 G_VALUE_TYPE_NAME (value));
6123 g_object_unref (widget);
6127 * gtk_widget_style_get_valist:
6128 * @widget: a #GtkWidget
6129 * @first_property_name: the name of the first property to get
6130 * @var_args: a <type>va_list</type> of pairs of property names and
6131 * locations to return the property values, starting with the location
6132 * for @first_property_name.
6134 * Non-vararg variant of gtk_widget_style_get(). Used primarily by language
6138 gtk_widget_style_get_valist (GtkWidget *widget,
6139 const gchar *first_property_name,
6144 g_return_if_fail (GTK_IS_WIDGET (widget));
6146 g_object_ref (widget);
6148 name = first_property_name;
6151 const GValue *peek_value;
6155 pspec = g_param_spec_pool_lookup (style_property_spec_pool,
6157 G_OBJECT_TYPE (widget),
6161 g_warning ("%s: widget class `%s' has no property named `%s'",
6163 G_OBJECT_TYPE_NAME (widget),
6167 /* style pspecs are always readable so we can spare that check here */
6169 peek_value = _gtk_style_peek_property_value (widget->style,
6170 G_OBJECT_TYPE (widget),
6172 g_param_spec_get_qdata (pspec, quark_property_parser));
6173 G_VALUE_LCOPY (peek_value, var_args, 0, &error);
6176 g_warning ("%s: %s", G_STRLOC, error);
6181 name = va_arg (var_args, gchar*);
6184 g_object_unref (widget);
6188 * gtk_widget_style_get:
6189 * @widget: a #GtkWidget
6190 * @first_property_name: the name of the first property to get
6191 * @Varargs: pairs of property names and locations to
6192 * return the property values, starting with the location for
6193 * @first_property_name, terminated by %NULL.
6195 * Gets the values of a multiple style properties of @widget.
6198 gtk_widget_style_get (GtkWidget *widget,
6199 const gchar *first_property_name,
6204 g_return_if_fail (GTK_IS_WIDGET (widget));
6206 va_start (var_args, first_property_name);
6207 gtk_widget_style_get_valist (widget, first_property_name, var_args);
6213 * @widget: a #GtkWidget
6214 * @path_length: location to store length of the path, or %NULL
6215 * @path: location to store allocated path string, or %NULL
6216 * @path_reversed: location to store allocated reverse path string, or %NULL
6218 * Obtains the full path to @widget. The path is simply the name of a
6219 * widget and all its parents in the container hierarchy, separated by
6220 * periods. The name of a widget comes from
6221 * gtk_widget_get_name(). Paths are used to apply styles to a widget
6222 * in gtkrc configuration files. Widget names are the type of the
6223 * widget by default (e.g. "GtkButton") or can be set to an
6224 * application-specific value with gtk_widget_set_name(). By setting
6225 * the name of a widget, you allow users or theme authors to apply
6226 * styles to that specific widget in their gtkrc
6227 * file. @path_reversed_p fills in the path in reverse order,
6228 * i.e. starting with @widget's name instead of starting with the name
6229 * of @widget's outermost ancestor.
6233 gtk_widget_path (GtkWidget *widget,
6236 gchar **path_reversed)
6238 static gchar *rev_path = NULL;
6239 static guint tmp_path_len = 0;
6242 g_return_if_fail (GTK_IS_WIDGET (widget));
6247 const gchar *string;
6252 string = gtk_widget_get_name (widget);
6253 l = strlen (string);
6254 while (tmp_path_len <= len + l + 1)
6256 tmp_path_len += INIT_PATH_SIZE;
6257 rev_path = g_realloc (rev_path, tmp_path_len);
6265 widget = widget->parent;
6268 rev_path[len++] = '.';
6270 rev_path[len++] = 0;
6275 *path_length = len - 1;
6277 *path_reversed = g_strdup (rev_path);
6280 *path = g_strdup (rev_path);
6281 g_strreverse (*path);
6286 * gtk_widget_class_path:
6287 * @widget: a #GtkWidget
6288 * @path_length: location to store the length of the class path, or %NULL
6289 * @path: location to store the class path as an allocated string, or %NULL
6290 * @path_reversed: location to store the reverse class path as an allocated string, or %NULL
6292 * Same as gtk_widget_path(), but always uses the name of a widget's type,
6293 * never uses a custom name set with gtk_widget_set_name().
6297 gtk_widget_class_path (GtkWidget *widget,
6300 gchar **path_reversed)
6302 static gchar *rev_path = NULL;
6303 static guint tmp_path_len = 0;
6306 g_return_if_fail (GTK_IS_WIDGET (widget));
6311 const gchar *string;
6316 string = gtk_type_name (GTK_WIDGET_TYPE (widget));
6317 l = strlen (string);
6318 while (tmp_path_len <= len + l + 1)
6320 tmp_path_len += INIT_PATH_SIZE;
6321 rev_path = g_realloc (rev_path, tmp_path_len);
6329 widget = widget->parent;
6332 rev_path[len++] = '.';
6334 rev_path[len++] = 0;
6339 *path_length = len - 1;
6341 *path_reversed = g_strdup (rev_path);
6344 *path = g_strdup (rev_path);
6345 g_strreverse (*path);
6350 * gtk_requisition_copy:
6351 * @requisition: a #GtkRequisition.
6352 * @returns: a copy of @requisition.
6354 * Copies a #GtkRequisition.
6357 gtk_requisition_copy (const GtkRequisition *requisition)
6359 return (GtkRequisition *)g_memdup (requisition, sizeof (GtkRequisition));
6363 * gtk_requisition_free:
6364 * @requisition: a #GtkRequisition.
6366 * Frees a #GtkRequisition.
6369 gtk_requisition_free (GtkRequisition *requisition)
6371 g_free (requisition);
6375 gtk_requisition_get_type (void)
6377 static GType our_type = 0;
6380 our_type = g_boxed_type_register_static ("GtkTypeRequisition",
6381 (GBoxedCopyFunc) gtk_requisition_copy,
6382 (GBoxedFreeFunc) gtk_requisition_free);
6388 gtk_widget_get_accessible (GtkWidget *widget)
6390 GtkWidgetClass *klass;
6392 g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
6394 klass = GTK_WIDGET_GET_CLASS (widget);
6396 g_return_val_if_fail (klass->get_accessible != NULL, NULL);
6398 return klass->get_accessible (widget);
6402 gtk_widget_real_get_accessible (GtkWidget *widget)
6404 AtkObject* accessible;
6406 accessible = g_object_get_qdata (G_OBJECT (widget),
6407 quark_accessible_object);
6410 AtkObjectFactory *factory;
6411 AtkRegistry *default_registry;
6413 default_registry = atk_get_default_registry ();
6414 factory = atk_registry_get_factory (default_registry,
6415 GTK_OBJECT_TYPE (widget));
6417 atk_object_factory_create_accessible (factory,
6419 g_object_set_qdata (G_OBJECT (widget),
6420 quark_accessible_object,
6427 * Initialize a AtkImplementorIface instance's virtual pointers as
6428 * appropriate to this implementor's class (GtkWidget).
6431 gtk_widget_accessible_interface_init (AtkImplementorIface *iface)
6433 iface->ref_accessible = gtk_widget_ref_accessible;
6437 gtk_widget_ref_accessible (AtkImplementor *implementor)
6439 AtkObject *accessible;
6441 accessible = gtk_widget_get_accessible (GTK_WIDGET (implementor));
6443 g_object_ref (G_OBJECT (accessible));