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/.
31 #include "gtkcontainer.h"
32 #include "gtkaccelmap.h"
33 #include "gtkclipboard.h"
34 #include "gtkiconfactory.h"
37 #include "gtkmarshalers.h"
39 #include "gtkselection.h"
40 #include "gtksettings.h"
41 #include "gtksizegroup.h"
42 #include "gtkwidget.h"
43 #include "gtkwindow.h"
44 #include "gtkbindings.h"
45 #include "gtkprivate.h"
47 #include "gdk/gdkprivate.h" /* Used in gtk_reset_shapes_recurse to avoid copy */
48 #include <gobject/gvaluecollector.h>
49 #include <gobject/gobjectnotifyqueue.c>
50 #include "gdk/gdkkeysyms.h"
51 #include "gtkaccessible.h"
52 #include "gtktooltip.h"
53 #include "gtkinvisible.h"
54 #include "gtkbuildable.h"
55 #include "gtkbuilderprivate.h"
58 #define WIDGET_CLASS(w) GTK_WIDGET_GET_CLASS (w)
59 #define INIT_PATH_SIZE (512)
100 PROPERTY_NOTIFY_EVENT,
101 SELECTION_CLEAR_EVENT,
102 SELECTION_REQUEST_EVENT,
103 SELECTION_NOTIFY_EVENT,
118 VISIBILITY_NOTIFY_EVENT,
122 ACCEL_CLOSURES_CHANGED,
148 PROP_RECEIVES_DEFAULT,
149 PROP_COMPOSITE_CHILD,
152 PROP_EXTENSION_EVENTS,
160 typedef struct _GtkStateData GtkStateData;
165 guint state_restoration : 1;
166 guint parent_sensitive : 1;
167 guint use_forall : 1;
170 /* --- prototypes --- */
171 static void gtk_widget_class_init (GtkWidgetClass *klass);
172 static void gtk_widget_base_class_finalize (GtkWidgetClass *klass);
173 static void gtk_widget_init (GtkWidget *widget);
174 static void gtk_widget_set_property (GObject *object,
178 static void gtk_widget_get_property (GObject *object,
182 static void gtk_widget_dispose (GObject *object);
183 static void gtk_widget_real_destroy (GtkObject *object);
184 static void gtk_widget_finalize (GObject *object);
185 static void gtk_widget_real_show (GtkWidget *widget);
186 static void gtk_widget_real_hide (GtkWidget *widget);
187 static void gtk_widget_real_map (GtkWidget *widget);
188 static void gtk_widget_real_unmap (GtkWidget *widget);
189 static void gtk_widget_real_realize (GtkWidget *widget);
190 static void gtk_widget_real_unrealize (GtkWidget *widget);
191 static void gtk_widget_real_size_request (GtkWidget *widget,
192 GtkRequisition *requisition);
193 static void gtk_widget_real_size_allocate (GtkWidget *widget,
194 GtkAllocation *allocation);
195 static void gtk_widget_real_style_set (GtkWidget *widget,
196 GtkStyle *previous_style);
197 static void gtk_widget_real_direction_changed(GtkWidget *widget,
198 GtkTextDirection previous_direction);
200 static void gtk_widget_real_grab_focus (GtkWidget *focus_widget);
201 static gboolean gtk_widget_real_query_tooltip (GtkWidget *widget,
204 gboolean keyboard_tip,
205 GtkTooltip *tooltip);
206 static gboolean gtk_widget_real_show_help (GtkWidget *widget,
207 GtkWidgetHelpType help_type);
209 static void gtk_widget_dispatch_child_properties_changed (GtkWidget *object,
211 GParamSpec **pspecs);
212 static gboolean gtk_widget_real_key_press_event (GtkWidget *widget,
214 static gboolean gtk_widget_real_key_release_event (GtkWidget *widget,
216 static gboolean gtk_widget_real_focus_in_event (GtkWidget *widget,
217 GdkEventFocus *event);
218 static gboolean gtk_widget_real_focus_out_event (GtkWidget *widget,
219 GdkEventFocus *event);
220 static gboolean gtk_widget_real_focus (GtkWidget *widget,
221 GtkDirectionType direction);
222 static void gtk_widget_real_move_focus (GtkWidget *widget,
223 GtkDirectionType direction);
224 static gboolean gtk_widget_real_keynav_failed (GtkWidget *widget,
225 GtkDirectionType direction);
226 static PangoContext* gtk_widget_peek_pango_context (GtkWidget *widget);
227 static void gtk_widget_update_pango_context (GtkWidget *widget);
228 static void gtk_widget_propagate_state (GtkWidget *widget,
230 static void gtk_widget_reset_rc_style (GtkWidget *widget);
231 static void gtk_widget_set_style_internal (GtkWidget *widget,
233 gboolean initial_emission);
234 static gint gtk_widget_event_internal (GtkWidget *widget,
236 static gboolean gtk_widget_real_mnemonic_activate (GtkWidget *widget,
237 gboolean group_cycling);
238 static void gtk_widget_aux_info_destroy (GtkWidgetAuxInfo *aux_info);
239 static AtkObject* gtk_widget_real_get_accessible (GtkWidget *widget);
240 static void gtk_widget_accessible_interface_init (AtkImplementorIface *iface);
241 static AtkObject* gtk_widget_ref_accessible (AtkImplementor *implementor);
242 static void gtk_widget_invalidate_widget_windows (GtkWidget *widget,
244 static GdkScreen * gtk_widget_get_screen_unchecked (GtkWidget *widget);
245 static void gtk_widget_queue_shallow_draw (GtkWidget *widget);
246 static gboolean gtk_widget_real_can_activate_accel (GtkWidget *widget,
249 static void gtk_widget_real_set_has_tooltip (GtkWidget *widget,
250 gboolean has_tooltip,
252 static void gtk_widget_buildable_interface_init (GtkBuildableIface *iface);
253 static void gtk_widget_buildable_set_name (GtkBuildable *buildable,
255 static const gchar * gtk_widget_buildable_get_name (GtkBuildable *buildable);
256 static GObject * gtk_widget_buildable_get_internal_child (GtkBuildable *buildable,
258 const gchar *childname);
259 static void gtk_widget_buildable_set_buildable_property (GtkBuildable *buildable,
262 const GValue *value);
263 static gboolean gtk_widget_buildable_custom_tag_start (GtkBuildable *buildable,
266 const gchar *tagname,
267 GMarkupParser *parser,
269 static void gtk_widget_buildable_custom_finished (GtkBuildable *buildable,
272 const gchar *tagname,
274 static void gtk_widget_buildable_parser_finished (GtkBuildable *buildable,
275 GtkBuilder *builder);
278 static void gtk_widget_set_usize_internal (GtkWidget *widget,
281 static void gtk_widget_get_draw_rectangle (GtkWidget *widget,
285 /* --- variables --- */
286 static gpointer gtk_widget_parent_class = NULL;
287 static guint widget_signals[LAST_SIGNAL] = { 0 };
288 static GtkStyle *gtk_default_style = NULL;
289 static GSList *colormap_stack = NULL;
290 static guint composite_child_stack = 0;
291 static GtkTextDirection gtk_default_direction = GTK_TEXT_DIR_LTR;
292 static GParamSpecPool *style_property_spec_pool = NULL;
294 static GQuark quark_property_parser = 0;
295 static GQuark quark_aux_info = 0;
296 static GQuark quark_accel_path = 0;
297 static GQuark quark_accel_closures = 0;
298 static GQuark quark_event_mask = 0;
299 static GQuark quark_extension_event_mode = 0;
300 static GQuark quark_parent_window = 0;
301 static GQuark quark_pointer_window = 0;
302 static GQuark quark_shape_info = 0;
303 static GQuark quark_input_shape_info = 0;
304 static GQuark quark_colormap = 0;
305 static GQuark quark_pango_context = 0;
306 static GQuark quark_rc_style = 0;
307 static GQuark quark_accessible_object = 0;
308 static GQuark quark_mnemonic_labels = 0;
309 static GQuark quark_tooltip_markup = 0;
310 static GQuark quark_has_tooltip = 0;
311 static GQuark quark_tooltip_window = 0;
312 GParamSpecPool *_gtk_widget_child_property_pool = NULL;
313 GObjectNotifyContext *_gtk_widget_child_property_notify_context = NULL;
315 /* --- functions --- */
317 gtk_widget_get_type (void)
319 static GType widget_type = 0;
321 if (G_UNLIKELY (widget_type == 0))
323 const GTypeInfo widget_info =
325 sizeof (GtkWidgetClass),
326 NULL, /* base_init */
327 (GBaseFinalizeFunc) gtk_widget_base_class_finalize,
328 (GClassInitFunc) gtk_widget_class_init,
329 NULL, /* class_finalize */
330 NULL, /* class_init */
333 (GInstanceInitFunc) gtk_widget_init,
334 NULL, /* value_table */
337 const GInterfaceInfo accessibility_info =
339 (GInterfaceInitFunc) gtk_widget_accessible_interface_init,
340 (GInterfaceFinalizeFunc) NULL,
341 NULL /* interface data */
344 const GInterfaceInfo buildable_info =
346 (GInterfaceInitFunc) gtk_widget_buildable_interface_init,
347 (GInterfaceFinalizeFunc) NULL,
348 NULL /* interface data */
351 widget_type = g_type_register_static (GTK_TYPE_OBJECT, "GtkWidget",
352 &widget_info, G_TYPE_FLAG_ABSTRACT);
354 g_type_add_interface_static (widget_type, ATK_TYPE_IMPLEMENTOR,
355 &accessibility_info) ;
356 g_type_add_interface_static (widget_type, GTK_TYPE_BUILDABLE,
365 child_property_notify_dispatcher (GObject *object,
369 GTK_WIDGET_GET_CLASS (object)->dispatch_child_properties_changed (GTK_WIDGET (object), n_pspecs, pspecs);
373 gtk_widget_class_init (GtkWidgetClass *klass)
375 static GObjectNotifyContext cpn_context = { 0, NULL, NULL };
376 GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
377 GtkObjectClass *object_class = GTK_OBJECT_CLASS (klass);
378 GtkBindingSet *binding_set;
380 gtk_widget_parent_class = g_type_class_peek_parent (klass);
382 quark_property_parser = g_quark_from_static_string ("gtk-rc-property-parser");
383 quark_aux_info = g_quark_from_static_string ("gtk-aux-info");
384 quark_accel_path = g_quark_from_static_string ("gtk-accel-path");
385 quark_accel_closures = g_quark_from_static_string ("gtk-accel-closures");
386 quark_event_mask = g_quark_from_static_string ("gtk-event-mask");
387 quark_extension_event_mode = g_quark_from_static_string ("gtk-extension-event-mode");
388 quark_parent_window = g_quark_from_static_string ("gtk-parent-window");
389 quark_pointer_window = g_quark_from_static_string ("gtk-pointer-window");
390 quark_shape_info = g_quark_from_static_string ("gtk-shape-info");
391 quark_input_shape_info = g_quark_from_static_string ("gtk-input-shape-info");
392 quark_colormap = g_quark_from_static_string ("gtk-colormap");
393 quark_pango_context = g_quark_from_static_string ("gtk-pango-context");
394 quark_rc_style = g_quark_from_static_string ("gtk-rc-style");
395 quark_accessible_object = g_quark_from_static_string ("gtk-accessible-object");
396 quark_mnemonic_labels = g_quark_from_static_string ("gtk-mnemonic-labels");
397 quark_tooltip_markup = g_quark_from_static_string ("gtk-tooltip-markup");
398 quark_has_tooltip = g_quark_from_static_string ("gtk-has-tooltip");
399 quark_tooltip_window = g_quark_from_static_string ("gtk-tooltip-window");
401 style_property_spec_pool = g_param_spec_pool_new (FALSE);
402 _gtk_widget_child_property_pool = g_param_spec_pool_new (TRUE);
403 cpn_context.quark_notify_queue = g_quark_from_static_string ("GtkWidget-child-property-notify-queue");
404 cpn_context.dispatcher = child_property_notify_dispatcher;
405 _gtk_widget_child_property_notify_context = &cpn_context;
407 gobject_class->dispose = gtk_widget_dispose;
408 gobject_class->finalize = gtk_widget_finalize;
409 gobject_class->set_property = gtk_widget_set_property;
410 gobject_class->get_property = gtk_widget_get_property;
412 object_class->destroy = gtk_widget_real_destroy;
414 klass->activate_signal = 0;
415 klass->set_scroll_adjustments_signal = 0;
416 klass->dispatch_child_properties_changed = gtk_widget_dispatch_child_properties_changed;
417 klass->show = gtk_widget_real_show;
418 klass->show_all = gtk_widget_show;
419 klass->hide = gtk_widget_real_hide;
420 klass->hide_all = gtk_widget_hide;
421 klass->map = gtk_widget_real_map;
422 klass->unmap = gtk_widget_real_unmap;
423 klass->realize = gtk_widget_real_realize;
424 klass->unrealize = gtk_widget_real_unrealize;
425 klass->size_request = gtk_widget_real_size_request;
426 klass->size_allocate = gtk_widget_real_size_allocate;
427 klass->state_changed = NULL;
428 klass->parent_set = NULL;
429 klass->hierarchy_changed = NULL;
430 klass->style_set = gtk_widget_real_style_set;
431 klass->direction_changed = gtk_widget_real_direction_changed;
432 klass->grab_notify = NULL;
433 klass->child_notify = NULL;
434 klass->mnemonic_activate = gtk_widget_real_mnemonic_activate;
435 klass->grab_focus = gtk_widget_real_grab_focus;
436 klass->focus = gtk_widget_real_focus;
438 klass->button_press_event = NULL;
439 klass->button_release_event = NULL;
440 klass->motion_notify_event = NULL;
441 klass->delete_event = NULL;
442 klass->destroy_event = NULL;
443 klass->expose_event = NULL;
444 klass->key_press_event = gtk_widget_real_key_press_event;
445 klass->key_release_event = gtk_widget_real_key_release_event;
446 klass->enter_notify_event = NULL;
447 klass->leave_notify_event = NULL;
448 klass->configure_event = NULL;
449 klass->focus_in_event = gtk_widget_real_focus_in_event;
450 klass->focus_out_event = gtk_widget_real_focus_out_event;
451 klass->map_event = NULL;
452 klass->unmap_event = NULL;
453 klass->window_state_event = NULL;
454 klass->property_notify_event = _gtk_selection_property_notify;
455 klass->selection_clear_event = gtk_selection_clear;
456 klass->selection_request_event = _gtk_selection_request;
457 klass->selection_notify_event = _gtk_selection_notify;
458 klass->selection_received = NULL;
459 klass->proximity_in_event = NULL;
460 klass->proximity_out_event = NULL;
461 klass->drag_begin = NULL;
462 klass->drag_end = NULL;
463 klass->drag_data_delete = NULL;
464 klass->drag_leave = NULL;
465 klass->drag_motion = NULL;
466 klass->drag_drop = NULL;
467 klass->drag_data_received = NULL;
468 klass->screen_changed = NULL;
469 klass->can_activate_accel = gtk_widget_real_can_activate_accel;
470 klass->grab_broken_event = NULL;
471 klass->query_tooltip = gtk_widget_real_query_tooltip;
473 klass->show_help = gtk_widget_real_show_help;
475 /* Accessibility support */
476 klass->get_accessible = gtk_widget_real_get_accessible;
478 klass->no_expose_event = NULL;
480 g_object_class_install_property (gobject_class,
482 g_param_spec_string ("name",
484 P_("The name of the widget"),
486 GTK_PARAM_READWRITE));
487 g_object_class_install_property (gobject_class,
489 g_param_spec_object ("parent",
491 P_("The parent widget of this widget. Must be a Container widget"),
493 GTK_PARAM_READWRITE));
495 g_object_class_install_property (gobject_class,
497 g_param_spec_int ("width-request",
499 P_("Override for width request of the widget, or -1 if natural request should be used"),
503 GTK_PARAM_READWRITE));
504 g_object_class_install_property (gobject_class,
506 g_param_spec_int ("height-request",
507 P_("Height request"),
508 P_("Override for height request of the widget, or -1 if natural request should be used"),
512 GTK_PARAM_READWRITE));
513 g_object_class_install_property (gobject_class,
515 g_param_spec_boolean ("visible",
517 P_("Whether the widget is visible"),
519 GTK_PARAM_READWRITE));
520 g_object_class_install_property (gobject_class,
522 g_param_spec_boolean ("sensitive",
524 P_("Whether the widget responds to input"),
526 GTK_PARAM_READWRITE));
527 g_object_class_install_property (gobject_class,
529 g_param_spec_boolean ("app-paintable",
530 P_("Application paintable"),
531 P_("Whether the application will paint directly on the widget"),
533 GTK_PARAM_READWRITE));
534 g_object_class_install_property (gobject_class,
536 g_param_spec_boolean ("can-focus",
538 P_("Whether the widget can accept the input focus"),
540 GTK_PARAM_READWRITE));
541 g_object_class_install_property (gobject_class,
543 g_param_spec_boolean ("has-focus",
545 P_("Whether the widget has the input focus"),
547 GTK_PARAM_READWRITE));
548 g_object_class_install_property (gobject_class,
550 g_param_spec_boolean ("is-focus",
552 P_("Whether the widget is the focus widget within the toplevel"),
554 GTK_PARAM_READWRITE));
555 g_object_class_install_property (gobject_class,
557 g_param_spec_boolean ("can-default",
559 P_("Whether the widget can be the default widget"),
561 GTK_PARAM_READWRITE));
562 g_object_class_install_property (gobject_class,
564 g_param_spec_boolean ("has-default",
566 P_("Whether the widget is the default widget"),
568 GTK_PARAM_READWRITE));
569 g_object_class_install_property (gobject_class,
570 PROP_RECEIVES_DEFAULT,
571 g_param_spec_boolean ("receives-default",
572 P_("Receives default"),
573 P_("If TRUE, the widget will receive the default action when it is focused"),
575 GTK_PARAM_READWRITE));
576 g_object_class_install_property (gobject_class,
577 PROP_COMPOSITE_CHILD,
578 g_param_spec_boolean ("composite-child",
579 P_("Composite child"),
580 P_("Whether the widget is part of a composite widget"),
582 GTK_PARAM_READABLE));
583 g_object_class_install_property (gobject_class,
585 g_param_spec_object ("style",
587 P_("The style of the widget, which contains information about how it will look (colors etc)"),
589 GTK_PARAM_READWRITE));
590 g_object_class_install_property (gobject_class,
592 g_param_spec_flags ("events",
594 P_("The event mask that decides what kind of GdkEvents this widget gets"),
597 GTK_PARAM_READWRITE));
598 g_object_class_install_property (gobject_class,
599 PROP_EXTENSION_EVENTS,
600 g_param_spec_enum ("extension-events",
601 P_("Extension events"),
602 P_("The mask that decides what kind of extension events this widget gets"),
603 GDK_TYPE_EXTENSION_MODE,
604 GDK_EXTENSION_EVENTS_NONE,
605 GTK_PARAM_READWRITE));
606 g_object_class_install_property (gobject_class,
608 g_param_spec_boolean ("no-show-all",
610 P_("Whether gtk_widget_show_all() should not affect this widget"),
612 GTK_PARAM_READWRITE));
615 * GtkWidget:has-tooltip:
617 * Enables or disables the emission of #GtkWidget::query-tooltip on @widget.
618 * A value of %TRUE indicates that @widget can have a tooltip, in this case
619 * the widget will be queried using #GtkWidget::query-tooltip to determine
620 * whether it will provide a tooltip or not.
622 * Note that setting this property to %TRUE for the first time will change
623 * the event masks of the GdkWindows of this widget to include leave-notify
624 * and motion-notify events. This cannot and will not be undone when the
625 * property is set to %FALSE again.
629 g_object_class_install_property (gobject_class,
631 g_param_spec_boolean ("has-tooltip",
633 P_("Whether this widget has a tooltip"),
635 GTK_PARAM_READWRITE));
637 * GtkWidget:tooltip-text:
639 * Sets the text of tooltip to be the given string.
641 * Also see gtk_tooltip_set_text().
643 * This is a convenience property which will take care of getting the
644 * tooltip shown if the given string is not %NULL: #GtkWidget:has-tooltip
645 * will automatically be set to %TRUE and there will be taken care of
646 * #GtkWidget::query-tooltip in the default signal handler.
650 g_object_class_install_property (gobject_class,
652 g_param_spec_string ("tooltip-text",
654 P_("The contents of the tooltip for this widget"),
656 GTK_PARAM_READWRITE));
658 * GtkWidget:tooltip-markup:
660 * Sets the text of tooltip to be the given string, which is marked up
661 * with the <link linkend="PangoMarkupFormat">Pango text markup language</link>.
662 * Also see gtk_tooltip_set_markup().
664 * This is a convenience property which will take care of getting the
665 * tooltip shown if the given string is not %NULL: #GtkWidget:has-tooltip
666 * will automatically be set to %TRUE and there will be taken care of
667 * #GtkWidget::query-tooltip in the default signal handler.
671 g_object_class_install_property (gobject_class,
673 g_param_spec_string ("tooltip-markup",
674 P_("Tooltip markup"),
675 P_("The contents of the tooltip for this widget"),
677 GTK_PARAM_READWRITE));
682 * The widget's window if it is realized, %NULL otherwise.
686 g_object_class_install_property (gobject_class,
688 g_param_spec_object ("window",
690 P_("The widget's window if it is realized"),
692 GTK_PARAM_READABLE));
694 widget_signals[SHOW] =
695 g_signal_new (I_("show"),
696 G_TYPE_FROM_CLASS (gobject_class),
698 G_STRUCT_OFFSET (GtkWidgetClass, show),
700 _gtk_marshal_VOID__VOID,
702 widget_signals[HIDE] =
703 g_signal_new (I_("hide"),
704 G_TYPE_FROM_CLASS (gobject_class),
706 G_STRUCT_OFFSET (GtkWidgetClass, hide),
708 _gtk_marshal_VOID__VOID,
710 widget_signals[MAP] =
711 g_signal_new (I_("map"),
712 G_TYPE_FROM_CLASS (gobject_class),
714 G_STRUCT_OFFSET (GtkWidgetClass, map),
716 _gtk_marshal_VOID__VOID,
718 widget_signals[UNMAP] =
719 g_signal_new (I_("unmap"),
720 G_TYPE_FROM_CLASS (gobject_class),
722 G_STRUCT_OFFSET (GtkWidgetClass, unmap),
724 _gtk_marshal_VOID__VOID,
726 widget_signals[REALIZE] =
727 g_signal_new (I_("realize"),
728 G_TYPE_FROM_CLASS (gobject_class),
730 G_STRUCT_OFFSET (GtkWidgetClass, realize),
732 _gtk_marshal_VOID__VOID,
734 widget_signals[UNREALIZE] =
735 g_signal_new (I_("unrealize"),
736 G_TYPE_FROM_CLASS (gobject_class),
738 G_STRUCT_OFFSET (GtkWidgetClass, unrealize),
740 _gtk_marshal_VOID__VOID,
742 widget_signals[SIZE_REQUEST] =
743 g_signal_new (I_("size-request"),
744 G_TYPE_FROM_CLASS (gobject_class),
746 G_STRUCT_OFFSET (GtkWidgetClass, size_request),
748 _gtk_marshal_VOID__BOXED,
750 GTK_TYPE_REQUISITION | G_SIGNAL_TYPE_STATIC_SCOPE);
751 widget_signals[SIZE_ALLOCATE] =
752 g_signal_new (I_("size-allocate"),
753 G_TYPE_FROM_CLASS (gobject_class),
755 G_STRUCT_OFFSET (GtkWidgetClass, size_allocate),
757 _gtk_marshal_VOID__BOXED,
759 GDK_TYPE_RECTANGLE | G_SIGNAL_TYPE_STATIC_SCOPE);
761 widget_signals[STATE_CHANGED] =
762 g_signal_new (I_("state-changed"),
763 G_TYPE_FROM_CLASS (gobject_class),
765 G_STRUCT_OFFSET (GtkWidgetClass, state_changed),
767 _gtk_marshal_VOID__ENUM,
769 GTK_TYPE_STATE_TYPE);
772 * GtkWidget::parent-set:
773 * @widget: the object on which the signal is emitted
774 * @old_parent: the previous parent, or %NULL if the widget
775 * just got its initial parent.
777 * The ::parent-set signal is emitted when a new parent
778 * has been set on a widget.
780 widget_signals[PARENT_SET] =
781 g_signal_new (I_("parent-set"),
782 G_TYPE_FROM_CLASS (gobject_class),
784 G_STRUCT_OFFSET (GtkWidgetClass, parent_set),
786 _gtk_marshal_VOID__OBJECT,
791 * GtkWidget::hierarchy-changed:
792 * @widget: the object on which the signal is emitted
793 * @previous_toplevel: the previous toplevel ancestor, or %NULL
794 * if the widget was previously unanchored
796 * The ::hierarchy-changed signal is emitted when the
797 * anchored state of a widget changes. A widget is
798 * <firstterm>anchored</firstterm> when its toplevel
799 * ancestor is a #GtkWindow. This signal is emitted when
800 * a widget changes from un-anchored to anchored or vice-versa.
802 widget_signals[HIERARCHY_CHANGED] =
803 g_signal_new (I_("hierarchy-changed"),
804 G_TYPE_FROM_CLASS (gobject_class),
806 G_STRUCT_OFFSET (GtkWidgetClass, hierarchy_changed),
808 _gtk_marshal_VOID__OBJECT,
813 * GtkWidget::style-set:
814 * @widget: the object on which the signal is emitted
815 * @previous_style: the previous style, or %NULL if the widget
816 * just got its initial style
818 * The ::style-set signal is emitted when a new style has been set
819 * on a widget. Note that style-modifying functions like
820 * gtk_widget_modify_base() also cause this signal to be emitted.
822 widget_signals[STYLE_SET] =
823 g_signal_new (I_("style-set"),
824 G_TYPE_FROM_CLASS (gobject_class),
826 G_STRUCT_OFFSET (GtkWidgetClass, style_set),
828 _gtk_marshal_VOID__OBJECT,
832 * GtkWidget::direction-changed:
833 * @widget: the object on which the signal is emitted
834 * @previous_direction: the previous text direction of @widget
836 * The ::direction-changed signal is emitted when the text direction
837 * of a widget changes.
839 widget_signals[DIRECTION_CHANGED] =
840 g_signal_new (I_("direction-changed"),
841 G_TYPE_FROM_CLASS (gobject_class),
843 G_STRUCT_OFFSET (GtkWidgetClass, direction_changed),
845 _gtk_marshal_VOID__ENUM,
847 GTK_TYPE_TEXT_DIRECTION);
850 * GtkWidget::grab-notify:
851 * @widget: the object which received the signal
852 * @was_grabbed: %FALSE if the widget becomes shadowed, %TRUE
853 * if it becomes unshadowed
855 * The ::grab-notify signal is emitted when a widget becomes
856 * shadowed by a GTK+ grab (not a pointer or keyboard grab) on
857 * another widget, or when it becomes unshadowed due to a grab
860 * A widget is shadowed by a gtk_grab_add() when the topmost
861 * grab widget in the grab stack of its window group is not
864 widget_signals[GRAB_NOTIFY] =
865 g_signal_new (I_("grab-notify"),
866 G_TYPE_FROM_CLASS (gobject_class),
868 G_STRUCT_OFFSET (GtkWidgetClass, grab_notify),
870 _gtk_marshal_VOID__BOOLEAN,
875 * GtkWidget::child-notify:
876 * @widget: the object which received the signal
877 * @pspec: the #GParamSpec of the changed child property
879 * The ::child-notify signal is emitted for each
880 * <link linkend="child-properties">child property</link> that has
881 * changed on an object. The signal's detail holds the property name.
883 widget_signals[CHILD_NOTIFY] =
884 g_signal_new (I_("child-notify"),
885 G_TYPE_FROM_CLASS (gobject_class),
886 G_SIGNAL_RUN_FIRST | G_SIGNAL_NO_RECURSE | G_SIGNAL_DETAILED | G_SIGNAL_NO_HOOKS,
887 G_STRUCT_OFFSET (GtkWidgetClass, child_notify),
889 g_cclosure_marshal_VOID__PARAM,
892 widget_signals[MNEMONIC_ACTIVATE] =
893 g_signal_new (I_("mnemonic-activate"),
894 G_TYPE_FROM_CLASS (gobject_class),
896 G_STRUCT_OFFSET (GtkWidgetClass, mnemonic_activate),
897 _gtk_boolean_handled_accumulator, NULL,
898 _gtk_marshal_BOOLEAN__BOOLEAN,
901 widget_signals[GRAB_FOCUS] =
902 g_signal_new (I_("grab-focus"),
903 G_TYPE_FROM_CLASS (gobject_class),
904 G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
905 G_STRUCT_OFFSET (GtkWidgetClass, grab_focus),
907 _gtk_marshal_VOID__VOID,
909 widget_signals[FOCUS] =
910 g_signal_new (I_("focus"),
911 G_TYPE_FROM_CLASS (object_class),
913 G_STRUCT_OFFSET (GtkWidgetClass, focus),
914 _gtk_boolean_handled_accumulator, NULL,
915 _gtk_marshal_BOOLEAN__ENUM,
917 GTK_TYPE_DIRECTION_TYPE);
918 widget_signals[MOVE_FOCUS] =
919 g_signal_new_class_handler (I_("move-focus"),
920 G_TYPE_FROM_CLASS (object_class),
921 G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
922 G_CALLBACK (gtk_widget_real_move_focus),
924 _gtk_marshal_VOID__ENUM,
927 GTK_TYPE_DIRECTION_TYPE);
930 * @widget: the object which received the signal.
931 * @event: the #GdkEvent which triggered this signal
933 * The GTK+ main loop will emit three signals for each GDK event delivered
934 * to a widget: one generic ::event signal, another, more specific,
935 * signal that matches the type of event delivered (e.g.
936 * #GtkWidget::key-press-event) and finally a generic
937 * #GtkWidget::event-after signal.
939 * Returns: %TRUE to stop other handlers from being invoked for the event
940 * and to cancel the emission of the second specific ::event signal.
941 * %FALSE to propagate the event further and to allow the emission of
942 * the second signal. The ::event-after signal is emitted regardless of
945 widget_signals[EVENT] =
946 g_signal_new (I_("event"),
947 G_TYPE_FROM_CLASS (gobject_class),
949 G_STRUCT_OFFSET (GtkWidgetClass, event),
950 _gtk_boolean_handled_accumulator, NULL,
951 _gtk_marshal_BOOLEAN__BOXED,
953 GDK_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE);
956 * GtkWidget::event-after:
957 * @widget: the object which received the signal.
958 * @event: the #GdkEvent which triggered this signal
960 * After the emission of the #GtkWidget::event signal and (optionally)
961 * the second more specific signal, ::event-after will be emitted
962 * regardless of the previous two signals handlers return values.
965 widget_signals[EVENT_AFTER] =
966 g_signal_new (I_("event-after"),
967 G_TYPE_FROM_CLASS (gobject_class),
971 _gtk_marshal_VOID__BOXED,
973 GDK_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE);
976 * GtkWidget::button-press-event:
977 * @widget: the object which received the signal.
978 * @event: the #GdkEventButton which triggered this signal
980 * The ::button-press-event signal will be emitted when a button
981 * (typically from a mouse) is pressed.
983 * To receive this signal, the #GdkWindow associated to the
984 * widget needs to enable the #GDK_BUTTON_PRESS_MASK mask.
986 * This signal will be sent to the grab widget if there is one.
988 * Returns: %TRUE to stop other handlers from being invoked for the event.
989 * %FALSE to propagate the event further.
991 widget_signals[BUTTON_PRESS_EVENT] =
992 g_signal_new (I_("button-press-event"),
993 G_TYPE_FROM_CLASS (gobject_class),
995 G_STRUCT_OFFSET (GtkWidgetClass, button_press_event),
996 _gtk_boolean_handled_accumulator, NULL,
997 _gtk_marshal_BOOLEAN__BOXED,
999 GDK_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE);
1002 * GtkWidget::button-release-event:
1003 * @widget: the object which received the signal.
1004 * @event: the #GdkEventButton which triggered this signal
1006 * The ::button-release-event signal will be emitted when a button
1007 * (typically from a mouse) is released.
1009 * To receive this signal, the #GdkWindow associated to the
1010 * widget needs to enable the #GDK_BUTTON_RELEASE_MASK mask.
1012 * This signal will be sent to the grab widget if there is one.
1014 * Returns: %TRUE to stop other handlers from being invoked for the event.
1015 * %FALSE to propagate the event further.
1017 widget_signals[BUTTON_RELEASE_EVENT] =
1018 g_signal_new (I_("button-release-event"),
1019 G_TYPE_FROM_CLASS (gobject_class),
1021 G_STRUCT_OFFSET (GtkWidgetClass, button_release_event),
1022 _gtk_boolean_handled_accumulator, NULL,
1023 _gtk_marshal_BOOLEAN__BOXED,
1025 GDK_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE);
1028 * GtkWidget::scroll-event:
1029 * @widget: the object which received the signal.
1030 * @event: the #GdkEventScroll which triggered this signal
1032 * The ::scroll-event signal is emitted when a button in the 4 to 7
1033 * range is pressed. Wheel mice are usually configured to generate
1034 * button press events for buttons 4 and 5 when the wheel is turned.
1036 * To receive this signal, the #GdkWindow associated to the widget needs
1037 * to enable the #GDK_BUTTON_PRESS_MASK mask.
1039 * This signal will be sent to the grab widget if there is one.
1041 * Returns: %TRUE to stop other handlers from being invoked for the event.
1042 * %FALSE to propagate the event further.
1044 widget_signals[SCROLL_EVENT] =
1045 g_signal_new (I_("scroll-event"),
1046 G_TYPE_FROM_CLASS (gobject_class),
1048 G_STRUCT_OFFSET (GtkWidgetClass, scroll_event),
1049 _gtk_boolean_handled_accumulator, NULL,
1050 _gtk_marshal_BOOLEAN__BOXED,
1052 GDK_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE);
1054 * GtkWidget::motion-notify-event:
1055 * @widget: the object which received the signal.
1056 * @event: the #GdkEventMotion which triggered this signal
1058 * The ::motion-notify-event signal is emitted when the pointer moves
1059 * over the widget's #GdkWindow.
1061 * To receive this signal, the #GdkWindow associated to the widget
1062 * needs to enable the #GDK_POINTER_MOTION_MASK mask.
1064 * This signal will be sent to the grab widget if there is one.
1066 * Returns: %TRUE to stop other handlers from being invoked for the event.
1067 * %FALSE to propagate the event further.
1069 widget_signals[MOTION_NOTIFY_EVENT] =
1070 g_signal_new (I_("motion-notify-event"),
1071 G_TYPE_FROM_CLASS (gobject_class),
1073 G_STRUCT_OFFSET (GtkWidgetClass, motion_notify_event),
1074 _gtk_boolean_handled_accumulator, NULL,
1075 _gtk_marshal_BOOLEAN__BOXED,
1077 GDK_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE);
1080 * GtkWidget::composited-changed:
1081 * @widget: the object on which the signal is emitted
1083 * The ::composited-changed signal is emitted when the composited
1084 * status of @widget<!-- -->s screen changes.
1085 * See gdk_screen_is_composited().
1087 widget_signals[COMPOSITED_CHANGED] =
1088 g_signal_new (I_("composited-changed"),
1089 G_TYPE_FROM_CLASS (gobject_class),
1090 G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1091 G_STRUCT_OFFSET (GtkWidgetClass, composited_changed),
1093 _gtk_marshal_VOID__VOID,
1097 * GtkWidget::keynav-failed:
1098 * @widget: the object which received the signal
1099 * @direction: the direction of movement
1101 * Gets emitted if keyboard navigation fails.
1102 * See gtk_widget_keynav_failed() for details.
1104 * Returns: %TRUE if stopping keyboard navigation is fine, %FALSE
1105 * if the emitting widget should try to handle the keyboard
1106 * navigation attempt in its parent container(s).
1110 widget_signals[KEYNAV_FAILED] =
1111 g_signal_new_class_handler (I_("keynav-failed"),
1112 G_TYPE_FROM_CLASS (gobject_class),
1114 G_CALLBACK (gtk_widget_real_keynav_failed),
1115 _gtk_boolean_handled_accumulator, NULL,
1116 _gtk_marshal_BOOLEAN__ENUM,
1118 GTK_TYPE_DIRECTION_TYPE);
1121 * GtkWidget::delete-event:
1122 * @widget: the object which received the signal
1123 * @event: the event which triggered this signal
1125 * The ::delete-event signal is emitted if a user requests that
1126 * a toplevel window is closed. The default handler for this signal
1127 * destroys the window. Connecting gtk_widget_hide_on_delete() to
1128 * this signal will cause the window to be hidden instead, so that
1129 * it can later be shown again without reconstructing it.
1131 * Returns: %TRUE to stop other handlers from being invoked for the event.
1132 * %FALSE to propagate the event further.
1134 widget_signals[DELETE_EVENT] =
1135 g_signal_new (I_("delete-event"),
1136 G_TYPE_FROM_CLASS (gobject_class),
1138 G_STRUCT_OFFSET (GtkWidgetClass, delete_event),
1139 _gtk_boolean_handled_accumulator, NULL,
1140 _gtk_marshal_BOOLEAN__BOXED,
1142 GDK_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE);
1145 * GtkWidget::destroy-event:
1146 * @widget: the object which received the signal.
1147 * @event: the event which triggered this signal
1149 * The ::destroy-event signal is emitted when a #GdkWindow is destroyed.
1150 * You rarely get this signal, because most widgets disconnect themselves
1151 * from their window before they destroy it, so no widget owns the
1152 * window at destroy time.
1154 * To receive this signal, the #GdkWindow associated to the widget needs
1155 * to enable the #GDK_STRUCTURE_MASK mask. GDK will enable this mask
1156 * automatically for all new windows.
1158 * Returns: %TRUE to stop other handlers from being invoked for the event.
1159 * %FALSE to propagate the event further.
1161 widget_signals[DESTROY_EVENT] =
1162 g_signal_new (I_("destroy-event"),
1163 G_TYPE_FROM_CLASS (gobject_class),
1165 G_STRUCT_OFFSET (GtkWidgetClass, destroy_event),
1166 _gtk_boolean_handled_accumulator, NULL,
1167 _gtk_marshal_BOOLEAN__BOXED,
1169 GDK_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE);
1172 * GtkWidget::expose-event:
1173 * @widget: the object which received the signal.
1174 * @event: the #GdkEventExpose which triggered this signal
1176 * The ::expose-event signal is emitted when an area of a previously
1177 * obscured #GdkWindow is made visible and needs to be redrawn.
1178 * #GTK_NO_WINDOW widgets will get a synthesized event from their parent
1181 * To receive this signal, the #GdkWindow associated to the widget needs
1182 * to enable the #GDK_EXPOSURE_MASK mask.
1184 * Returns: %TRUE to stop other handlers from being invoked for the event.
1185 * %FALSE to propagate the event further.
1187 widget_signals[EXPOSE_EVENT] =
1188 g_signal_new (I_("expose-event"),
1189 G_TYPE_FROM_CLASS (gobject_class),
1191 G_STRUCT_OFFSET (GtkWidgetClass, expose_event),
1192 _gtk_boolean_handled_accumulator, NULL,
1193 _gtk_marshal_BOOLEAN__BOXED,
1195 GDK_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE);
1198 * GtkWidget::key-press-event:
1199 * @widget: the object which received the signal
1200 * @event: the #GdkEventKey which triggered this signal
1202 * The ::key-press-event signal is emitted when a key is pressed.
1204 * To receive this signal, the #GdkWindow associated to the widget needs
1205 * to enable the #GDK_KEY_PRESS_MASK mask.
1207 * This signal will be sent to the grab widget if there is one.
1209 * Returns: %TRUE to stop other handlers from being invoked for the event.
1210 * %FALSE to propagate the event further.
1212 widget_signals[KEY_PRESS_EVENT] =
1213 g_signal_new (I_("key-press-event"),
1214 G_TYPE_FROM_CLASS (gobject_class),
1216 G_STRUCT_OFFSET (GtkWidgetClass, key_press_event),
1217 _gtk_boolean_handled_accumulator, NULL,
1218 _gtk_marshal_BOOLEAN__BOXED,
1220 GDK_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE);
1223 * GtkWidget::key-release-event:
1224 * @widget: the object which received the signal
1225 * @event: the #GdkEventKey which triggered this signal
1227 * The ::key-release-event signal is emitted when a key is pressed.
1229 * To receive this signal, the #GdkWindow associated to the widget needs
1230 * to enable the #GDK_KEY_RELEASE_MASK mask.
1232 * This signal will be sent to the grab widget if there is one.
1234 * Returns: %TRUE to stop other handlers from being invoked for the event.
1235 * %FALSE to propagate the event further.
1237 widget_signals[KEY_RELEASE_EVENT] =
1238 g_signal_new (I_("key-release-event"),
1239 G_TYPE_FROM_CLASS (gobject_class),
1241 G_STRUCT_OFFSET (GtkWidgetClass, key_release_event),
1242 _gtk_boolean_handled_accumulator, NULL,
1243 _gtk_marshal_BOOLEAN__BOXED,
1245 GDK_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE);
1248 * GtkWidget::enter-notify-event:
1249 * @widget: the object which received the signal
1250 * @event: the #GdkEventCrossing which triggered this signal
1252 * The ::enter-notify-event will be emitted when the pointer enters
1253 * the @widget's window.
1255 * To receive this signal, the #GdkWindow associated to the widget needs
1256 * to enable the #GDK_ENTER_NOTIFY_MASK mask.
1258 * This signal will be sent to the grab widget if there is one.
1260 * Returns: %TRUE to stop other handlers from being invoked for the event.
1261 * %FALSE to propagate the event further.
1263 widget_signals[ENTER_NOTIFY_EVENT] =
1264 g_signal_new (I_("enter-notify-event"),
1265 G_TYPE_FROM_CLASS (gobject_class),
1267 G_STRUCT_OFFSET (GtkWidgetClass, enter_notify_event),
1268 _gtk_boolean_handled_accumulator, NULL,
1269 _gtk_marshal_BOOLEAN__BOXED,
1271 GDK_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE);
1274 * GtkWidget::leave-notify-event:
1275 * @widget: the object which received the signal
1276 * @event: the #GdkEventCrossing which triggered this signal
1278 * The ::leave-notify-event will be emitted when the pointer leaves
1279 * the @widget's window.
1281 * To receive this signal, the #GdkWindow associated to the widget needs
1282 * to enable the #GDK_LEAVE_NOTIFY_MASK mask.
1284 * This signal will be sent to the grab widget if there is one.
1286 * Returns: %TRUE to stop other handlers from being invoked for the event.
1287 * %FALSE to propagate the event further.
1289 widget_signals[LEAVE_NOTIFY_EVENT] =
1290 g_signal_new (I_("leave-notify-event"),
1291 G_TYPE_FROM_CLASS (gobject_class),
1293 G_STRUCT_OFFSET (GtkWidgetClass, leave_notify_event),
1294 _gtk_boolean_handled_accumulator, NULL,
1295 _gtk_marshal_BOOLEAN__BOXED,
1297 GDK_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE);
1300 * GtkWidget::configure-event
1301 * @widget: the object which received the signal
1302 * @event: the #GdkEventConfigure which triggered this signal
1304 * The ::configure-event signal will be emitted when the size, position or
1305 * stacking of the @widget's window has changed.
1307 * To receive this signal, the #GdkWindow associated to the widget needs
1308 * to enable the #GDK_STRUCTURE_MASK mask. GDK will enable this mask
1309 * automatically for all new windows.
1311 * Returns: %TRUE to stop other handlers from being invoked for the event.
1312 * %FALSE to propagate the event further.
1314 widget_signals[CONFIGURE_EVENT] =
1315 g_signal_new (I_("configure-event"),
1316 G_TYPE_FROM_CLASS (gobject_class),
1318 G_STRUCT_OFFSET (GtkWidgetClass, configure_event),
1319 _gtk_boolean_handled_accumulator, NULL,
1320 _gtk_marshal_BOOLEAN__BOXED,
1322 GDK_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE);
1325 * GtkWidget::focus-in-event
1326 * @widget: the object which received the signal
1327 * @event: the #GdkEventFocus which triggered this signal
1329 * The ::focus-in-event signal will be emitted when the keyboard focus
1330 * enters the @widget's window.
1332 * To receive this signal, the #GdkWindow associated to the widget needs
1333 * to enable the #GDK_FOCUS_CHANGE_MASK mask.
1335 * Returns: %TRUE to stop other handlers from being invoked for the event.
1336 * %FALSE to propagate the event further.
1338 widget_signals[FOCUS_IN_EVENT] =
1339 g_signal_new (I_("focus-in-event"),
1340 G_TYPE_FROM_CLASS (gobject_class),
1342 G_STRUCT_OFFSET (GtkWidgetClass, focus_in_event),
1343 _gtk_boolean_handled_accumulator, NULL,
1344 _gtk_marshal_BOOLEAN__BOXED,
1346 GDK_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE);
1349 * GtkWidget::focus-out-event
1350 * @widget: the object which received the signal
1351 * @event: the #GdkEventFocus which triggered this signal
1353 * The ::focus-out-event signal will be emitted when the keyboard focus
1354 * leaves the @widget's window.
1356 * To receive this signal, the #GdkWindow associated to the widget needs
1357 * to enable the #GDK_FOCUS_CHANGE_MASK mask.
1359 * Returns: %TRUE to stop other handlers from being invoked for the event.
1360 * %FALSE to propagate the event further.
1362 widget_signals[FOCUS_OUT_EVENT] =
1363 g_signal_new (I_("focus-out-event"),
1364 G_TYPE_FROM_CLASS (gobject_class),
1366 G_STRUCT_OFFSET (GtkWidgetClass, focus_out_event),
1367 _gtk_boolean_handled_accumulator, NULL,
1368 _gtk_marshal_BOOLEAN__BOXED,
1370 GDK_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE);
1373 * GtkWidget::map-event
1374 * @widget: the object which received the signal
1375 * @event: the #GdkEventAny which triggered this signal
1377 * The ::map-event signal will be emitted when the @widget's window is
1378 * mapped. A window is mapped when it becomes visible on the screen.
1380 * To receive this signal, the #GdkWindow associated to the widget needs
1381 * to enable the #GDK_STRUCTURE_MASK mask. GDK will enable this mask
1382 * automatically for all new windows.
1384 * Returns: %TRUE to stop other handlers from being invoked for the event.
1385 * %FALSE to propagate the event further.
1387 widget_signals[MAP_EVENT] =
1388 g_signal_new (I_("map-event"),
1389 G_TYPE_FROM_CLASS (gobject_class),
1391 G_STRUCT_OFFSET (GtkWidgetClass, map_event),
1392 _gtk_boolean_handled_accumulator, NULL,
1393 _gtk_marshal_BOOLEAN__BOXED,
1395 GDK_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE);
1398 * GtkWidget::unmap-event
1399 * @widget: the object which received the signal
1400 * @event: the #GdkEventAny which triggered this signal
1402 * The ::unmap-event signal will be emitted when the @widget's window is
1403 * unmapped. A window is unmapped when it becomes invisible on the screen.
1405 * To receive this signal, the #GdkWindow associated to the widget needs
1406 * to enable the #GDK_STRUCTURE_MASK mask. GDK will enable this mask
1407 * automatically for all new windows.
1409 * Returns: %TRUE to stop other handlers from being invoked for the event.
1410 * %FALSE to propagate the event further.
1412 widget_signals[UNMAP_EVENT] =
1413 g_signal_new (I_("unmap-event"),
1414 G_TYPE_FROM_CLASS (gobject_class),
1416 G_STRUCT_OFFSET (GtkWidgetClass, unmap_event),
1417 _gtk_boolean_handled_accumulator, NULL,
1418 _gtk_marshal_BOOLEAN__BOXED,
1420 GDK_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE);
1423 * GtkWidget::property-notify-event
1424 * @widget: the object which received the signal
1425 * @event: the #GdkEventProperty which triggered this signal
1427 * The ::property-notify-event signal will be emitted when a property on
1428 * the @widget's window has been changed or deleted.
1430 * To receive this signal, the #GdkWindow associated to the widget needs
1431 * to enable the #GDK_PROPERTY_CHANGE_MASK mask.
1433 * Returns: %TRUE to stop other handlers from being invoked for the event.
1434 * %FALSE to propagate the event further.
1436 widget_signals[PROPERTY_NOTIFY_EVENT] =
1437 g_signal_new (I_("property-notify-event"),
1438 G_TYPE_FROM_CLASS (gobject_class),
1440 G_STRUCT_OFFSET (GtkWidgetClass, property_notify_event),
1441 _gtk_boolean_handled_accumulator, NULL,
1442 _gtk_marshal_BOOLEAN__BOXED,
1444 GDK_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE);
1447 * GtkWidget::selection-clear-event
1448 * @widget: the object which received the signal
1449 * @event: the #GdkEventSelection which triggered this signal
1451 * The ::selection-clear-event signal will be emitted when the
1452 * the @widget's window has lost ownership of a selection.
1454 * Returns: %TRUE to stop other handlers from being invoked for the event.
1455 * %FALSE to propagate the event further.
1457 widget_signals[SELECTION_CLEAR_EVENT] =
1458 g_signal_new (I_("selection-clear-event"),
1459 G_TYPE_FROM_CLASS (gobject_class),
1461 G_STRUCT_OFFSET (GtkWidgetClass, selection_clear_event),
1462 _gtk_boolean_handled_accumulator, NULL,
1463 _gtk_marshal_BOOLEAN__BOXED,
1465 GDK_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE);
1468 * GtkWidget::selection-request-event
1469 * @widget: the object which received the signal
1470 * @event: the #GdkEventSelection which triggered this signal
1472 * The ::selection-request-event signal will be emitted when
1473 * another client requests ownership of the selection owned by
1474 * the @widget's window.
1476 * Returns: %TRUE to stop other handlers from being invoked for the event.
1477 * %FALSE to propagate the event further.
1479 widget_signals[SELECTION_REQUEST_EVENT] =
1480 g_signal_new (I_("selection-request-event"),
1481 G_TYPE_FROM_CLASS (gobject_class),
1483 G_STRUCT_OFFSET (GtkWidgetClass, selection_request_event),
1484 _gtk_boolean_handled_accumulator, NULL,
1485 _gtk_marshal_BOOLEAN__BOXED,
1487 GDK_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE);
1489 widget_signals[SELECTION_NOTIFY_EVENT] =
1490 g_signal_new (I_("selection-notify-event"),
1491 G_TYPE_FROM_CLASS (gobject_class),
1493 G_STRUCT_OFFSET (GtkWidgetClass, selection_notify_event),
1494 _gtk_boolean_handled_accumulator, NULL,
1495 _gtk_marshal_BOOLEAN__BOXED,
1497 GDK_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE);
1499 widget_signals[SELECTION_RECEIVED] =
1500 g_signal_new (I_("selection-received"),
1501 G_TYPE_FROM_CLASS (gobject_class),
1503 G_STRUCT_OFFSET (GtkWidgetClass, selection_received),
1505 _gtk_marshal_VOID__BOXED_UINT,
1507 GTK_TYPE_SELECTION_DATA | G_SIGNAL_TYPE_STATIC_SCOPE,
1510 widget_signals[SELECTION_GET] =
1511 g_signal_new (I_("selection-get"),
1512 G_TYPE_FROM_CLASS (gobject_class),
1514 G_STRUCT_OFFSET (GtkWidgetClass, selection_get),
1516 _gtk_marshal_VOID__BOXED_UINT_UINT,
1518 GTK_TYPE_SELECTION_DATA | G_SIGNAL_TYPE_STATIC_SCOPE,
1523 * GtkWidget::proximity-in-event
1524 * @widget: the object which received the signal
1525 * @event: the #GdkEventProximity which triggered this signal
1527 * To receive this signal the #GdkWindow associated to the widget needs
1528 * to enable the #GDK_PROXIMITY_IN_MASK mask.
1530 * This signal will be sent to the grab widget if there is one.
1532 * Returns: %TRUE to stop other handlers from being invoked for the event.
1533 * %FALSE to propagate the event further.
1535 widget_signals[PROXIMITY_IN_EVENT] =
1536 g_signal_new (I_("proximity-in-event"),
1537 G_TYPE_FROM_CLASS (gobject_class),
1539 G_STRUCT_OFFSET (GtkWidgetClass, proximity_in_event),
1540 _gtk_boolean_handled_accumulator, NULL,
1541 _gtk_marshal_BOOLEAN__BOXED,
1543 GDK_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE);
1546 * GtkWidget::proximity-out-event
1547 * @widget: the object which received the signal
1548 * @event: the #GdkEventProximity which triggered this signal
1550 * To receive this signal the #GdkWindow associated to the widget needs
1551 * to enable the #GDK_PROXIMITY_OUT_MASK mask.
1553 * This signal will be sent to the grab widget if there is one.
1555 * Returns: %TRUE to stop other handlers from being invoked for the event.
1556 * %FALSE to propagate the event further.
1558 widget_signals[PROXIMITY_OUT_EVENT] =
1559 g_signal_new (I_("proximity-out-event"),
1560 G_TYPE_FROM_CLASS (gobject_class),
1562 G_STRUCT_OFFSET (GtkWidgetClass, proximity_out_event),
1563 _gtk_boolean_handled_accumulator, NULL,
1564 _gtk_marshal_BOOLEAN__BOXED,
1566 GDK_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE);
1569 * GtkWidget::drag-leave:
1570 * @widget: the object which received the signal.
1571 * @drag_context: the drag context
1572 * @time: the timestamp of the motion event
1574 * The ::drag-leave signal is emitted on the drop site when the cursor
1575 * leaves the widget. A typical reason to connect to this signal is to
1576 * undo things done in #GtkWidget::drag-motion, e.g. undo highlighting
1577 * with gtk_drag_unhighlight()
1579 widget_signals[DRAG_LEAVE] =
1580 g_signal_new (I_("drag-leave"),
1581 G_TYPE_FROM_CLASS (gobject_class),
1583 G_STRUCT_OFFSET (GtkWidgetClass, drag_leave),
1585 _gtk_marshal_VOID__OBJECT_UINT,
1587 GDK_TYPE_DRAG_CONTEXT,
1591 * GtkWidget::drag-begin:
1592 * @widget: the object which received the signal
1593 * @drag_context: the drag context
1595 * The ::drag-begin signal is emitted on the drag source when a drag is
1596 * started. A typical reason to connect to this signal is to set up a
1597 * custom drag icon with gtk_drag_source_set_icon().
1599 widget_signals[DRAG_BEGIN] =
1600 g_signal_new (I_("drag-begin"),
1601 G_TYPE_FROM_CLASS (gobject_class),
1603 G_STRUCT_OFFSET (GtkWidgetClass, drag_begin),
1605 _gtk_marshal_VOID__OBJECT,
1607 GDK_TYPE_DRAG_CONTEXT);
1610 * GtkWidget::drag-end:
1611 * @widget: the object which received the signal
1612 * @drag_context: the drag context
1614 * The ::drag-end signal is emitted on the drag source when a drag is
1615 * finished. A typical reason to connect to this signal is to undo
1616 * things done in #GtkWidget::drag-begin.
1618 widget_signals[DRAG_END] =
1619 g_signal_new (I_("drag-end"),
1620 G_TYPE_FROM_CLASS (gobject_class),
1622 G_STRUCT_OFFSET (GtkWidgetClass, drag_end),
1624 _gtk_marshal_VOID__OBJECT,
1626 GDK_TYPE_DRAG_CONTEXT);
1629 * GtkWidget::drag-data-delete:
1630 * @widget: the object which received the signal
1631 * @drag_context: the drag context
1633 * The ::drag-data-delete signal is emitted on the drag source when a drag
1634 * with the action %GDK_ACTION_MOVE is successfully completed. The signal
1635 * handler is responsible for deleting the data that has been dropped. What
1636 * "delete" means depends on the context of the drag operation.
1638 widget_signals[DRAG_DATA_DELETE] =
1639 g_signal_new (I_("drag-data-delete"),
1640 G_TYPE_FROM_CLASS (gobject_class),
1642 G_STRUCT_OFFSET (GtkWidgetClass, drag_data_delete),
1644 _gtk_marshal_VOID__OBJECT,
1646 GDK_TYPE_DRAG_CONTEXT);
1649 * GtkWidget::drag-failed:
1650 * @widget: the object which received the signal
1651 * @drag_context: the drag context
1652 * @result: the result of the drag operation
1654 * The ::drag-failed signal is emitted on the drag source when a drag has
1655 * failed. The signal handler may hook custom code to handle a failed DND
1656 * operation based on the type of error, it returns %TRUE is the failure has
1657 * been already handled (not showing the default "drag operation failed"
1658 * animation), otherwise it returns %FALSE.
1660 * Return value: %TRUE if the failed drag operation has been already handled.
1664 widget_signals[DRAG_FAILED] =
1665 g_signal_new (I_("drag-failed"),
1666 G_TYPE_FROM_CLASS (gobject_class),
1668 0, _gtk_boolean_handled_accumulator, NULL,
1669 _gtk_marshal_BOOLEAN__OBJECT_ENUM,
1671 GDK_TYPE_DRAG_CONTEXT,
1672 GTK_TYPE_DRAG_RESULT);
1675 * GtkWidget::drag-motion:
1676 * @widget: the object which received the signal
1677 * @drag_context: the drag context
1678 * @x: the x coordinate of the current cursor position
1679 * @y: the y coordinate of the current cursor position
1680 * @time: the timestamp of the motion event
1681 * @returns: whether the cursor position is in a drop zone
1683 * The drag-motion signal is emitted on the drop site when the user
1684 * moves the cursor over the widget during a drag. The signal handler
1685 * must determine whether the cursor position is in a drop zone or not.
1686 * If it is not in a drop zone, it returns %FALSE and no further processing
1687 * is necessary. Otherwise, the handler returns %TRUE. In this case, the
1688 * handler is responsible for providing the necessary information for
1689 * displaying feedback to the user, by calling gdk_drag_status().
1691 * If the decision whether the drop will be accepted or rejected can't be
1692 * made based solely on the cursor position and the type of the data, the
1693 * handler may inspect the dragged data by calling gtk_drag_get_data() and
1694 * defer the gdk_drag_status() call to the #GtkWidget::drag-data-received
1695 * handler. Note that you cannot not pass #GTK_DEST_DEFAULT_DROP,
1696 * #GTK_DEST_DEFAULT_MOTION or #GTK_DEST_DEFAULT_ALL to gtk_drag_dest_set()
1697 * when using the drag-motion signal that way.
1699 * Also note that there is no drag-enter signal. The drag receiver has to
1700 * keep track of whether he has received any drag-motion signals since the
1701 * last #GtkWidget::drag-leave and if not, treat the drag-motion signal as
1702 * an "enter" signal. Upon an "enter", the handler will typically highlight
1703 * the drop site with gtk_drag_highlight().
1706 * drag_motion (GtkWidget *widget,
1707 * GdkDragContext *context,
1714 * PrivateData *private_data = GET_PRIVATE_DATA (widget);
1716 * if (!private_data->drag_highlight)
1718 * private_data->drag_highlight = 1;
1719 * gtk_drag_highlight (widget);
1722 * target = gtk_drag_dest_find_target (widget, context, NULL);
1723 * if (target == GDK_NONE)
1724 * gdk_drag_status (context, 0, time);
1727 * private_data->pending_status = context->suggested_action;
1728 * gtk_drag_get_data (widget, context, target, time);
1735 * drag_data_received (GtkWidget *widget,
1736 * GdkDragContext *context,
1739 * GtkSelectionData *selection_data,
1743 * PrivateData *private_data = GET_PRIVATE_DATA (widget);
1745 * if (private_data->suggested_action)
1747 * private_data->suggested_action = 0;
1749 * /* We are getting this data due to a request in drag_motion,
1750 * * rather than due to a request in drag_drop, so we are just
1751 * * supposed to call gdk_drag_status (), not actually paste in
1754 * str = gtk_selection_data_get_text (selection_data);
1755 * if (!data_is_acceptable (str))
1756 * gdk_drag_status (context, 0, time);
1758 * gdk_drag_status (context, private_data->suggested_action, time);
1762 * /* accept the drop */
1767 widget_signals[DRAG_MOTION] =
1768 g_signal_new (I_("drag-motion"),
1769 G_TYPE_FROM_CLASS (gobject_class),
1771 G_STRUCT_OFFSET (GtkWidgetClass, drag_motion),
1772 _gtk_boolean_handled_accumulator, NULL,
1773 _gtk_marshal_BOOLEAN__OBJECT_INT_INT_UINT,
1775 GDK_TYPE_DRAG_CONTEXT,
1781 * GtkWidget::drag-drop:
1782 * @widget: the object which received the signal
1783 * @drag_context: the drag context
1784 * @x: the x coordinate of the current cursor position
1785 * @y: the y coordinate of the current cursor position
1786 * @time: the timestamp of the motion event
1787 * @returns: whether the cursor position is in a drop zone
1789 * The ::drag-drop signal is emitted on the drop site when the user drops
1790 * the data onto the widget. The signal handler must determine whether
1791 * the cursor position is in a drop zone or not. If it is not in a drop
1792 * zone, it returns %FALSE and no further processing is necessary.
1793 * Otherwise, the handler returns %TRUE. In this case, the handler must
1794 * ensure that gtk_drag_finish() is called to let the source know that
1795 * the drop is done. The call to gtk_drag_finish() can be done either
1796 * directly or in a #GtkWidget::drag-data-received handler which gets
1797 * triggered by calling gtk_drag_get_data() to receive the data for one
1798 * or more of the supported targets.
1800 widget_signals[DRAG_DROP] =
1801 g_signal_new (I_("drag-drop"),
1802 G_TYPE_FROM_CLASS (gobject_class),
1804 G_STRUCT_OFFSET (GtkWidgetClass, drag_drop),
1805 _gtk_boolean_handled_accumulator, NULL,
1806 _gtk_marshal_BOOLEAN__OBJECT_INT_INT_UINT,
1808 GDK_TYPE_DRAG_CONTEXT,
1814 * GtkWidget::drag-data-get:
1815 * @widget: the object which received the signal
1816 * @drag_context: the drag context
1817 * @data: the #GtkSelectionData to be filled with the dragged data
1818 * @info: the info that has been registered with the target in the
1820 * @time: the timestamp at which the data was requested
1822 * The ::drag-data-get signal is emitted on the drag source when the drop
1823 * site requests the data which is dragged. It is the responsibility of
1824 * the signal handler to fill @data with the data in the format which
1825 * is indicated by @info. See gtk_selection_data_set() and
1826 * gtk_selection_data_set_text().
1828 widget_signals[DRAG_DATA_GET] =
1829 g_signal_new (I_("drag-data-get"),
1830 G_TYPE_FROM_CLASS (gobject_class),
1832 G_STRUCT_OFFSET (GtkWidgetClass, drag_data_get),
1834 _gtk_marshal_VOID__OBJECT_BOXED_UINT_UINT,
1836 GDK_TYPE_DRAG_CONTEXT,
1837 GTK_TYPE_SELECTION_DATA | G_SIGNAL_TYPE_STATIC_SCOPE,
1842 * GtkWidget::drag-data-received:
1843 * @widget: the object which received the signal
1844 * @drag_context: the drag context
1845 * @x: where the drop happened
1846 * @y: where the drop happened
1847 * @data: the received data
1848 * @info: the info that has been registered with the target in the
1850 * @time: the timestamp at which the data was received
1852 * The ::drag-data-received signal is emitted on the drop site when the
1853 * dragged data has been received. If the data was received in order to
1854 * determine whether the drop will be accepted, the handler is expected
1855 * to call gdk_drag_status() and <emphasis>not</emphasis> finish the drag.
1856 * If the data was received in response to a #GtkWidget::drag-drop signal
1857 * (and this is the last target to be received), the handler for this
1858 * signal is expected to process the received data and then call
1859 * gtk_drag_finish(), setting the @success parameter depending on whether
1860 * the data was processed successfully.
1862 * The handler may inspect and modify @drag_context->action before calling
1863 * gtk_drag_finish(), e.g. to implement %GDK_ACTION_ASK as shown in the
1864 * following example:
1867 * drag_data_received (GtkWidget *widget,
1868 * GdkDragContext *drag_context,
1871 * GtkSelectionData *data,
1875 * if ((data->length >= 0) && (data->format == 8))
1877 * if (drag_context->action == GDK_ACTION_ASK)
1879 * GtkWidget *dialog;
1882 * dialog = gtk_message_dialog_new (NULL,
1883 * GTK_DIALOG_MODAL |
1884 * GTK_DIALOG_DESTROY_WITH_PARENT,
1886 * GTK_BUTTONS_YES_NO,
1887 * "Move the data ?\n");
1888 * response = gtk_dialog_run (GTK_DIALOG (dialog));
1889 * gtk_widget_destroy (dialog);
1891 * if (response == GTK_RESPONSE_YES)
1892 * drag_context->action = GDK_ACTION_MOVE;
1894 * drag_context->action = GDK_ACTION_COPY;
1897 * gtk_drag_finish (drag_context, TRUE, FALSE, time);
1901 * gtk_drag_finish (drag_context, FALSE, FALSE, time);
1905 widget_signals[DRAG_DATA_RECEIVED] =
1906 g_signal_new (I_("drag-data-received"),
1907 G_TYPE_FROM_CLASS (gobject_class),
1909 G_STRUCT_OFFSET (GtkWidgetClass, drag_data_received),
1911 _gtk_marshal_VOID__OBJECT_INT_INT_BOXED_UINT_UINT,
1913 GDK_TYPE_DRAG_CONTEXT,
1916 GTK_TYPE_SELECTION_DATA | G_SIGNAL_TYPE_STATIC_SCOPE,
1921 * GtkWidget::visibility-notify-event:
1922 * @widget: the object which received the signal
1923 * @event: the #GdkEventVisibility which triggered this signal
1925 * The ::visibility-notify-event will be emitted when the @widget's window
1926 * is obscured or unobscured.
1928 * To receive this signal the #GdkWindow associated to the widget needs
1929 * to enable the #GDK_VISIBILITY_NOTIFY_MASK mask.
1931 * Returns: %TRUE to stop other handlers from being invoked for the event.
1932 * %FALSE to propagate the event further.
1934 widget_signals[VISIBILITY_NOTIFY_EVENT] =
1935 g_signal_new (I_("visibility-notify-event"),
1936 G_TYPE_FROM_CLASS (gobject_class),
1938 G_STRUCT_OFFSET (GtkWidgetClass, visibility_notify_event),
1939 _gtk_boolean_handled_accumulator, NULL,
1940 _gtk_marshal_BOOLEAN__BOXED,
1942 GDK_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE);
1945 * GtkWidget::client-event:
1946 * @widget: the object which received the signal
1947 * @event: the #GdkEventClient which triggered this signal
1949 * The ::client-event will be emitted when the @widget's window
1950 * receives a message (via a ClientMessage event) from another
1953 * Returns: %TRUE to stop other handlers from being invoked for
1954 * the event. %FALSE to propagate the event further.
1956 widget_signals[CLIENT_EVENT] =
1957 g_signal_new (I_("client-event"),
1958 G_TYPE_FROM_CLASS (gobject_class),
1960 G_STRUCT_OFFSET (GtkWidgetClass, client_event),
1961 _gtk_boolean_handled_accumulator, NULL,
1962 _gtk_marshal_BOOLEAN__BOXED,
1964 GDK_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE);
1967 * GtkWidget::no-expose-event:
1968 * @widget: the object which received the signal
1969 * @event: the #GdkEventNoExpose which triggered this signal
1971 * The ::no-expose-event will be emitted when the @widget's window is
1972 * drawn as a copy of another #GdkDrawable (with gdk_draw_drawable() or
1973 * gdk_window_copy_area()) which was completely unobscured. If the source
1974 * window was partially obscured #GdkEventExpose events will be generated
1977 * Returns: %TRUE to stop other handlers from being invoked for the event.
1978 * %FALSE to propagate the event further.
1980 widget_signals[NO_EXPOSE_EVENT] =
1981 g_signal_new (I_("no-expose-event"),
1982 G_TYPE_FROM_CLASS (gobject_class),
1984 G_STRUCT_OFFSET (GtkWidgetClass, no_expose_event),
1985 _gtk_boolean_handled_accumulator, NULL,
1986 _gtk_marshal_BOOLEAN__BOXED,
1988 GDK_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE);
1991 * GtkWidget::window-state-event:
1992 * @widget: the object which received the signal
1993 * @event: the #GdkEventWindowState which triggered this signal
1995 * The ::window-state-event will be emitted when the state of the
1996 * toplevel window associated to the @widget changes.
1998 * To receive this signal the #GdkWindow associated to the widget
1999 * needs to enable the #GDK_STRUCTURE_MASK mask. GDK will enable
2000 * this mask automatically for all new windows.
2002 * Returns: %TRUE to stop other handlers from being invoked for the
2003 * event. %FALSE to propagate the event further.
2005 widget_signals[WINDOW_STATE_EVENT] =
2006 g_signal_new (I_("window-state-event"),
2007 G_TYPE_FROM_CLASS (gobject_class),
2009 G_STRUCT_OFFSET (GtkWidgetClass, window_state_event),
2010 _gtk_boolean_handled_accumulator, NULL,
2011 _gtk_marshal_BOOLEAN__BOXED,
2013 GDK_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE);
2016 * GtkWidget::damage-event:
2017 * @widget: the object which received the signal
2018 * @event: the #GdkEventExpose event
2020 * Emitted when a redirected window belonging to @widget gets drawn into.
2021 * The region/area members of the event shows what area of the redirected
2022 * drawable was drawn into.
2024 * Returns: %TRUE to stop other handlers from being invoked for the event.
2025 * %FALSE to propagate the event further.
2029 widget_signals[DAMAGE_EVENT] =
2030 g_signal_new (I_("damage-event"),
2031 G_TYPE_FROM_CLASS (gobject_class),
2034 _gtk_boolean_handled_accumulator, NULL,
2035 _gtk_marshal_BOOLEAN__BOXED,
2037 GDK_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE);
2039 * GtkWidget::grab-broken-event:
2040 * @widget: the object which received the signal
2041 * @event: the #GdkEventGrabBroken event
2043 * Emitted when a pointer or keyboard grab on a window belonging
2044 * to @widget gets broken.
2046 * On X11, this happens when the grab window becomes unviewable
2047 * (i.e. it or one of its ancestors is unmapped), or if the same
2048 * application grabs the pointer or keyboard again.
2050 * Returns: %TRUE to stop other handlers from being invoked for
2051 * the event. %FALSE to propagate the event further.
2055 widget_signals[GRAB_BROKEN] =
2056 g_signal_new (I_("grab-broken-event"),
2057 G_TYPE_FROM_CLASS (gobject_class),
2059 G_STRUCT_OFFSET (GtkWidgetClass, grab_broken_event),
2060 _gtk_boolean_handled_accumulator, NULL,
2061 _gtk_marshal_BOOLEAN__BOXED,
2063 GDK_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE);
2065 * GtkWidget::query-tooltip:
2066 * @widget: the object which received the signal
2067 * @x: the x coordinate of the cursor position where the request has
2068 * been emitted, relative to @widget->window
2069 * @y: the y coordinate of the cursor position where the request has
2070 * been emitted, relative to @widget->window
2071 * @keyboard_mode: %TRUE if the tooltip was trigged using the keyboard
2072 * @tooltip: a #GtkTooltip
2074 * Emitted when #GtkWidget:has-tooltip is %TRUE and the #GtkSettings:gtk-tooltip-timeout
2075 * has expired with the cursor hovering "above" @widget; or emitted when @widget got
2076 * focus in keyboard mode.
2078 * Using the given coordinates, the signal handler should determine
2079 * whether a tooltip should be shown for @widget. If this is the case
2080 * %TRUE should be returned, %FALSE otherwise. Note that if
2081 * @keyboard_mode is %TRUE, the values of @x and @y are undefined and
2082 * should not be used.
2084 * The signal handler is free to manipulate @tooltip with the therefore
2085 * destined function calls.
2087 * Returns: %TRUE if @tooltip should be shown right now, %FALSE otherwise.
2091 widget_signals[QUERY_TOOLTIP] =
2092 g_signal_new (I_("query-tooltip"),
2093 G_TYPE_FROM_CLASS (gobject_class),
2095 G_STRUCT_OFFSET (GtkWidgetClass, query_tooltip),
2096 _gtk_boolean_handled_accumulator, NULL,
2097 _gtk_marshal_BOOLEAN__INT_INT_BOOLEAN_OBJECT,
2105 * GtkWidget::popup-menu
2106 * @widget: the object which received the signal
2108 * This signal gets emitted whenever a widget should pop up a context
2109 * menu. This usually happens through the standard key binding mechanism;
2110 * by pressing a certain key while a widget is focused, the user can cause
2111 * the widget to pop up a menu. For example, the #GtkEntry widget creates
2112 * a menu with clipboard commands. See <xref linkend="checklist-popup-menu"/>
2113 * for an example of how to use this signal.
2115 * Returns: %TRUE if a menu was activated
2117 widget_signals[POPUP_MENU] =
2118 g_signal_new (I_("popup-menu"),
2119 G_TYPE_FROM_CLASS (gobject_class),
2120 G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
2121 G_STRUCT_OFFSET (GtkWidgetClass, popup_menu),
2122 _gtk_boolean_handled_accumulator, NULL,
2123 _gtk_marshal_BOOLEAN__VOID,
2125 widget_signals[SHOW_HELP] =
2126 g_signal_new (I_("show-help"),
2127 G_TYPE_FROM_CLASS (gobject_class),
2128 G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
2129 G_STRUCT_OFFSET (GtkWidgetClass, show_help),
2130 _gtk_boolean_handled_accumulator, NULL,
2131 _gtk_marshal_BOOLEAN__ENUM,
2133 GTK_TYPE_WIDGET_HELP_TYPE);
2134 widget_signals[ACCEL_CLOSURES_CHANGED] =
2135 g_signal_new (I_("accel-closures-changed"),
2136 G_TYPE_FROM_CLASS (gobject_class),
2140 _gtk_marshal_VOID__VOID,
2144 * GtkWidget::screen-changed:
2145 * @widget: the object on which the signal is emitted
2146 * @previous_screen: the previous screen, or %NULL if the
2147 * widget was not associated with a screen before
2149 * The ::screen-changed signal gets emitted when the
2150 * screen of a widget has changed.
2152 widget_signals[SCREEN_CHANGED] =
2153 g_signal_new (I_("screen-changed"),
2154 G_TYPE_FROM_CLASS (gobject_class),
2156 G_STRUCT_OFFSET (GtkWidgetClass, screen_changed),
2158 _gtk_marshal_VOID__OBJECT,
2162 * GtkWidget::can-activate-accel:
2163 * @widget: the object which received the signal
2164 * @signal_id: the ID of a signal installed on @widget
2166 * Determines whether an accelerator that activates the signal
2167 * identified by @signal_id can currently be activated.
2168 * This signal is present to allow applications and derived
2169 * widgets to override the default #GtkWidget handling
2170 * for determining whether an accelerator can be activated.
2172 * Returns: %TRUE if the signal can be activated.
2174 widget_signals[CAN_ACTIVATE_ACCEL] =
2175 g_signal_new (I_("can-activate-accel"),
2176 G_TYPE_FROM_CLASS (gobject_class),
2178 G_STRUCT_OFFSET (GtkWidgetClass, can_activate_accel),
2179 _gtk_boolean_handled_accumulator, NULL,
2180 _gtk_marshal_BOOLEAN__UINT,
2181 G_TYPE_BOOLEAN, 1, G_TYPE_UINT);
2183 binding_set = gtk_binding_set_by_class (klass);
2184 gtk_binding_entry_add_signal (binding_set, GDK_F10, GDK_SHIFT_MASK,
2186 gtk_binding_entry_add_signal (binding_set, GDK_Menu, 0,
2189 gtk_binding_entry_add_signal (binding_set, GDK_F1, GDK_CONTROL_MASK,
2191 GTK_TYPE_WIDGET_HELP_TYPE,
2192 GTK_WIDGET_HELP_TOOLTIP);
2193 gtk_binding_entry_add_signal (binding_set, GDK_KP_F1, GDK_CONTROL_MASK,
2195 GTK_TYPE_WIDGET_HELP_TYPE,
2196 GTK_WIDGET_HELP_TOOLTIP);
2197 gtk_binding_entry_add_signal (binding_set, GDK_F1, GDK_SHIFT_MASK,
2199 GTK_TYPE_WIDGET_HELP_TYPE,
2200 GTK_WIDGET_HELP_WHATS_THIS);
2201 gtk_binding_entry_add_signal (binding_set, GDK_KP_F1, GDK_SHIFT_MASK,
2203 GTK_TYPE_WIDGET_HELP_TYPE,
2204 GTK_WIDGET_HELP_WHATS_THIS);
2206 gtk_widget_class_install_style_property (klass,
2207 g_param_spec_boolean ("interior-focus",
2208 P_("Interior Focus"),
2209 P_("Whether to draw the focus indicator inside widgets"),
2211 GTK_PARAM_READABLE));
2213 gtk_widget_class_install_style_property (klass,
2214 g_param_spec_int ("focus-line-width",
2215 P_("Focus linewidth"),
2216 P_("Width, in pixels, of the focus indicator line"),
2218 GTK_PARAM_READABLE));
2220 gtk_widget_class_install_style_property (klass,
2221 g_param_spec_string ("focus-line-pattern",
2222 P_("Focus line dash pattern"),
2223 P_("Dash pattern used to draw the focus indicator"),
2225 GTK_PARAM_READABLE));
2226 gtk_widget_class_install_style_property (klass,
2227 g_param_spec_int ("focus-padding",
2228 P_("Focus padding"),
2229 P_("Width, in pixels, between focus indicator and the widget 'box'"),
2231 GTK_PARAM_READABLE));
2232 gtk_widget_class_install_style_property (klass,
2233 g_param_spec_boxed ("cursor-color",
2235 P_("Color with which to draw insertion cursor"),
2237 GTK_PARAM_READABLE));
2238 gtk_widget_class_install_style_property (klass,
2239 g_param_spec_boxed ("secondary-cursor-color",
2240 P_("Secondary cursor color"),
2241 P_("Color with which to draw the secondary insertion cursor when editing mixed right-to-left and left-to-right text"),
2243 GTK_PARAM_READABLE));
2244 gtk_widget_class_install_style_property (klass,
2245 g_param_spec_float ("cursor-aspect-ratio",
2246 P_("Cursor line aspect ratio"),
2247 P_("Aspect ratio with which to draw insertion cursor"),
2249 GTK_PARAM_READABLE));
2252 * GtkWidget:draw-border:
2254 * The "draw-border" style property defines the size of areas outside
2255 * the widget's allocation to draw.
2259 gtk_widget_class_install_style_property (klass,
2260 g_param_spec_boxed ("draw-border",
2262 P_("Size of areas outside the widget's allocation to draw"),
2264 GTK_PARAM_READABLE));
2267 * GtkWidget:link-color:
2269 * The "link-color" style property defines the color of unvisited links.
2273 gtk_widget_class_install_style_property (klass,
2274 g_param_spec_boxed ("link-color",
2275 P_("Unvisited Link Color"),
2276 P_("Color of unvisited links"),
2278 GTK_PARAM_READABLE));
2281 * GtkWidget:visited-link-color:
2283 * The "visited-link-color" style property defines the color of visited links.
2287 gtk_widget_class_install_style_property (klass,
2288 g_param_spec_boxed ("visited-link-color",
2289 P_("Visited Link Color"),
2290 P_("Color of visited links"),
2292 GTK_PARAM_READABLE));
2295 * GtkWidget:wide-separators:
2297 * The "wide-separators" style property defines whether separators have
2298 * configurable width and should be drawn using a box instead of a line.
2302 gtk_widget_class_install_style_property (klass,
2303 g_param_spec_boolean ("wide-separators",
2304 P_("Wide Separators"),
2305 P_("Whether separators have configurable width and should be drawn using a box instead of a line"),
2307 GTK_PARAM_READABLE));
2310 * GtkWidget:separator-width:
2312 * The "separator-width" style property defines the width of separators.
2313 * This property only takes effect if #GtkWidget:wide-separators is %TRUE.
2317 gtk_widget_class_install_style_property (klass,
2318 g_param_spec_int ("separator-width",
2319 P_("Separator Width"),
2320 P_("The width of separators if wide-separators is TRUE"),
2322 GTK_PARAM_READABLE));
2325 * GtkWidget:separator-height:
2327 * The "separator-height" style property defines the height of separators.
2328 * This property only takes effect if #GtkWidget:wide-separators is %TRUE.
2332 gtk_widget_class_install_style_property (klass,
2333 g_param_spec_int ("separator-height",
2334 P_("Separator Height"),
2335 P_("The height of separators if \"wide-separators\" is TRUE"),
2337 GTK_PARAM_READABLE));
2340 * GtkWidget:scroll-arrow-hlength:
2342 * The "scroll-arrow-hlength" style property defines the length of
2343 * horizontal scroll arrows.
2347 gtk_widget_class_install_style_property (klass,
2348 g_param_spec_int ("scroll-arrow-hlength",
2349 P_("Horizontal Scroll Arrow Length"),
2350 P_("The length of horizontal scroll arrows"),
2352 GTK_PARAM_READABLE));
2355 * GtkWidget:scroll-arrow-vlength:
2357 * The "scroll-arrow-vlength" style property defines the length of
2358 * vertical scroll arrows.
2362 gtk_widget_class_install_style_property (klass,
2363 g_param_spec_int ("scroll-arrow-vlength",
2364 P_("Vertical Scroll Arrow Length"),
2365 P_("The length of vertical scroll arrows"),
2367 GTK_PARAM_READABLE));
2371 gtk_widget_base_class_finalize (GtkWidgetClass *klass)
2375 list = g_param_spec_pool_list_owned (style_property_spec_pool, G_OBJECT_CLASS_TYPE (klass));
2376 for (node = list; node; node = node->next)
2378 GParamSpec *pspec = node->data;
2380 g_param_spec_pool_remove (style_property_spec_pool, pspec);
2381 g_param_spec_unref (pspec);
2387 gtk_widget_set_property (GObject *object,
2389 const GValue *value,
2392 GtkWidget *widget = GTK_WIDGET (object);
2397 guint32 saved_flags;
2398 gchar *tooltip_markup;
2399 const gchar *tooltip_text;
2400 GtkWindow *tooltip_window;
2403 gtk_widget_set_name (widget, g_value_get_string (value));
2406 gtk_container_add (GTK_CONTAINER (g_value_get_object (value)), widget);
2408 case PROP_WIDTH_REQUEST:
2409 gtk_widget_set_usize_internal (widget, g_value_get_int (value), -2);
2411 case PROP_HEIGHT_REQUEST:
2412 gtk_widget_set_usize_internal (widget, -2, g_value_get_int (value));
2415 if (g_value_get_boolean (value))
2416 gtk_widget_show (widget);
2418 gtk_widget_hide (widget);
2420 case PROP_SENSITIVE:
2421 gtk_widget_set_sensitive (widget, g_value_get_boolean (value));
2423 case PROP_APP_PAINTABLE:
2424 gtk_widget_set_app_paintable (widget, g_value_get_boolean (value));
2426 case PROP_CAN_FOCUS:
2427 saved_flags = GTK_WIDGET_FLAGS (widget);
2428 if (g_value_get_boolean (value))
2429 GTK_WIDGET_SET_FLAGS (widget, GTK_CAN_FOCUS);
2431 GTK_WIDGET_UNSET_FLAGS (widget, GTK_CAN_FOCUS);
2432 if (saved_flags != GTK_WIDGET_FLAGS (widget))
2433 gtk_widget_queue_resize (widget);
2435 case PROP_HAS_FOCUS:
2436 if (g_value_get_boolean (value))
2437 gtk_widget_grab_focus (widget);
2440 if (g_value_get_boolean (value))
2441 gtk_widget_grab_focus (widget);
2443 case PROP_CAN_DEFAULT:
2444 saved_flags = GTK_WIDGET_FLAGS (widget);
2445 if (g_value_get_boolean (value))
2446 GTK_WIDGET_SET_FLAGS (widget, GTK_CAN_DEFAULT);
2448 GTK_WIDGET_UNSET_FLAGS (widget, GTK_CAN_DEFAULT);
2449 if (saved_flags != GTK_WIDGET_FLAGS (widget))
2450 gtk_widget_queue_resize (widget);
2452 case PROP_HAS_DEFAULT:
2453 if (g_value_get_boolean (value))
2454 gtk_widget_grab_default (widget);
2456 case PROP_RECEIVES_DEFAULT:
2457 if (g_value_get_boolean (value))
2458 GTK_WIDGET_SET_FLAGS (widget, GTK_RECEIVES_DEFAULT);
2460 GTK_WIDGET_UNSET_FLAGS (widget, GTK_RECEIVES_DEFAULT);
2463 gtk_widget_set_style (widget, g_value_get_object (value));
2466 if (!GTK_WIDGET_REALIZED (widget) && !GTK_WIDGET_NO_WINDOW (widget))
2467 gtk_widget_set_events (widget, g_value_get_flags (value));
2469 case PROP_EXTENSION_EVENTS:
2470 gtk_widget_set_extension_events (widget, g_value_get_enum (value));
2472 case PROP_NO_SHOW_ALL:
2473 gtk_widget_set_no_show_all (widget, g_value_get_boolean (value));
2475 case PROP_HAS_TOOLTIP:
2476 gtk_widget_real_set_has_tooltip (widget,
2477 g_value_get_boolean (value), FALSE);
2479 case PROP_TOOLTIP_MARKUP:
2480 tooltip_window = g_object_get_qdata (object, quark_tooltip_window);
2481 tooltip_markup = g_value_dup_string (value);
2483 /* Treat an empty string as a NULL string,
2484 * because an empty string would be useless for a tooltip:
2486 if (tooltip_markup && (strlen (tooltip_markup) == 0))
2488 g_free (tooltip_markup);
2489 tooltip_markup = NULL;
2492 g_object_set_qdata_full (object, quark_tooltip_markup,
2493 tooltip_markup, g_free);
2495 tmp = (tooltip_window != NULL || tooltip_markup != NULL);
2496 gtk_widget_real_set_has_tooltip (widget, tmp, FALSE);
2497 gtk_widget_trigger_tooltip_query (widget);
2499 case PROP_TOOLTIP_TEXT:
2500 tooltip_window = g_object_get_qdata (object, quark_tooltip_window);
2502 tooltip_text = g_value_get_string (value);
2504 /* Treat an empty string as a NULL string,
2505 * because an empty string would be useless for a tooltip:
2507 if (tooltip_text && (strlen (tooltip_text) == 0))
2508 tooltip_text = NULL;
2510 tooltip_markup = tooltip_text ? g_markup_escape_text (tooltip_text, -1) : NULL;
2512 g_object_set_qdata_full (object, quark_tooltip_markup,
2513 tooltip_markup, g_free);
2515 tmp = (tooltip_window != NULL || tooltip_markup != NULL);
2516 gtk_widget_real_set_has_tooltip (widget, tmp, FALSE);
2517 gtk_widget_trigger_tooltip_query (widget);
2520 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
2526 gtk_widget_get_property (GObject *object,
2531 GtkWidget *widget = GTK_WIDGET (object);
2540 g_value_set_string (value, widget->name);
2542 g_value_set_static_string (value, "");
2546 g_value_set_object (value, widget->parent);
2548 g_value_set_object (value, NULL);
2550 case PROP_WIDTH_REQUEST:
2553 gtk_widget_get_size_request (widget, &w, NULL);
2554 g_value_set_int (value, w);
2557 case PROP_HEIGHT_REQUEST:
2560 gtk_widget_get_size_request (widget, NULL, &h);
2561 g_value_set_int (value, h);
2565 g_value_set_boolean (value, (GTK_WIDGET_VISIBLE (widget) != FALSE));
2567 case PROP_SENSITIVE:
2568 g_value_set_boolean (value, (GTK_WIDGET_SENSITIVE (widget) != FALSE));
2570 case PROP_APP_PAINTABLE:
2571 g_value_set_boolean (value, (GTK_WIDGET_APP_PAINTABLE (widget) != FALSE));
2573 case PROP_CAN_FOCUS:
2574 g_value_set_boolean (value, (GTK_WIDGET_CAN_FOCUS (widget) != FALSE));
2576 case PROP_HAS_FOCUS:
2577 g_value_set_boolean (value, (GTK_WIDGET_HAS_FOCUS (widget) != FALSE));
2580 g_value_set_boolean (value, (gtk_widget_is_focus (widget)));
2582 case PROP_CAN_DEFAULT:
2583 g_value_set_boolean (value, (GTK_WIDGET_CAN_DEFAULT (widget) != FALSE));
2585 case PROP_HAS_DEFAULT:
2586 g_value_set_boolean (value, (GTK_WIDGET_HAS_DEFAULT (widget) != FALSE));
2588 case PROP_RECEIVES_DEFAULT:
2589 g_value_set_boolean (value, (GTK_WIDGET_RECEIVES_DEFAULT (widget) != FALSE));
2591 case PROP_COMPOSITE_CHILD:
2592 g_value_set_boolean (value, (GTK_WIDGET_COMPOSITE_CHILD (widget) != FALSE));
2595 g_value_set_object (value, gtk_widget_get_style (widget));
2598 eventp = g_object_get_qdata (G_OBJECT (widget), quark_event_mask);
2599 g_value_set_flags (value, GPOINTER_TO_INT (eventp));
2601 case PROP_EXTENSION_EVENTS:
2602 modep = g_object_get_qdata (G_OBJECT (widget), quark_extension_event_mode);
2603 g_value_set_enum (value, GPOINTER_TO_INT (modep));
2605 case PROP_NO_SHOW_ALL:
2606 g_value_set_boolean (value, gtk_widget_get_no_show_all (widget));
2608 case PROP_HAS_TOOLTIP:
2609 g_value_set_boolean (value, GPOINTER_TO_UINT (g_object_get_qdata (object, quark_has_tooltip)));
2611 case PROP_TOOLTIP_TEXT:
2613 gchar *escaped = g_object_get_qdata (object, quark_tooltip_markup);
2616 if (escaped && !pango_parse_markup (escaped, -1, 0, NULL, &text, NULL, NULL))
2617 g_assert (NULL == text); /* text should still be NULL in case of markup errors */
2619 g_value_set_string (value, text);
2623 case PROP_TOOLTIP_MARKUP:
2624 g_value_set_string (value, g_object_get_qdata (object, quark_tooltip_markup));
2627 g_value_set_object (value, gtk_widget_get_window (widget));
2630 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
2636 gtk_widget_init (GtkWidget *widget)
2638 GTK_PRIVATE_FLAGS (widget) = PRIVATE_GTK_CHILD_VISIBLE;
2639 widget->state = GTK_STATE_NORMAL;
2640 widget->saved_state = GTK_STATE_NORMAL;
2641 widget->name = NULL;
2642 widget->requisition.width = 0;
2643 widget->requisition.height = 0;
2644 widget->allocation.x = -1;
2645 widget->allocation.y = -1;
2646 widget->allocation.width = 1;
2647 widget->allocation.height = 1;
2648 widget->window = NULL;
2649 widget->parent = NULL;
2651 GTK_WIDGET_SET_FLAGS (widget,
2653 GTK_PARENT_SENSITIVE |
2654 (composite_child_stack ? GTK_COMPOSITE_CHILD : 0) |
2655 GTK_DOUBLE_BUFFERED);
2657 GTK_PRIVATE_SET_FLAG (widget, GTK_REDRAW_ON_ALLOC);
2658 GTK_PRIVATE_SET_FLAG (widget, GTK_REQUEST_NEEDED);
2659 GTK_PRIVATE_SET_FLAG (widget, GTK_ALLOC_NEEDED);
2661 widget->style = gtk_widget_get_default_style ();
2662 g_object_ref (widget->style);
2667 gtk_widget_dispatch_child_properties_changed (GtkWidget *widget,
2669 GParamSpec **pspecs)
2671 GtkWidget *container = widget->parent;
2674 for (i = 0; widget->parent == container && i < n_pspecs; i++)
2675 g_signal_emit (widget, widget_signals[CHILD_NOTIFY], g_quark_from_string (pspecs[i]->name), pspecs[i]);
2679 * gtk_widget_freeze_child_notify:
2680 * @widget: a #GtkWidget
2682 * Stops emission of #GtkWidget::child-notify signals on @widget. The
2683 * signals are queued until gtk_widget_thaw_child_notify() is called
2686 * This is the analogue of g_object_freeze_notify() for child properties.
2689 gtk_widget_freeze_child_notify (GtkWidget *widget)
2691 g_return_if_fail (GTK_IS_WIDGET (widget));
2693 if (!G_OBJECT (widget)->ref_count)
2696 g_object_ref (widget);
2697 g_object_notify_queue_freeze (G_OBJECT (widget), _gtk_widget_child_property_notify_context);
2698 g_object_unref (widget);
2702 * gtk_widget_child_notify:
2703 * @widget: a #GtkWidget
2704 * @child_property: the name of a child property installed on the
2705 * class of @widget<!-- -->'s parent
2707 * Emits a #GtkWidget::child-notify signal for the
2708 * <link linkend="child-properties">child property</link> @child_property
2711 * This is the analogue of g_object_notify() for child properties.
2714 gtk_widget_child_notify (GtkWidget *widget,
2715 const gchar *child_property)
2719 g_return_if_fail (GTK_IS_WIDGET (widget));
2720 g_return_if_fail (child_property != NULL);
2721 if (!G_OBJECT (widget)->ref_count || !widget->parent)
2724 g_object_ref (widget);
2725 pspec = g_param_spec_pool_lookup (_gtk_widget_child_property_pool,
2727 G_OBJECT_TYPE (widget->parent),
2730 g_warning ("%s: container class `%s' has no child property named `%s'",
2732 G_OBJECT_TYPE_NAME (widget->parent),
2736 GObjectNotifyQueue *nqueue = g_object_notify_queue_freeze (G_OBJECT (widget), _gtk_widget_child_property_notify_context);
2738 g_object_notify_queue_add (G_OBJECT (widget), nqueue, pspec);
2739 g_object_notify_queue_thaw (G_OBJECT (widget), nqueue);
2741 g_object_unref (widget);
2745 * gtk_widget_thaw_child_notify:
2746 * @widget: a #GtkWidget
2748 * Reverts the effect of a previous call to gtk_widget_freeze_child_notify().
2749 * This causes all queued #GtkWidget::child-notify signals on @widget to be
2753 gtk_widget_thaw_child_notify (GtkWidget *widget)
2755 GObjectNotifyQueue *nqueue;
2757 g_return_if_fail (GTK_IS_WIDGET (widget));
2759 if (!G_OBJECT (widget)->ref_count)
2762 g_object_ref (widget);
2763 nqueue = g_object_notify_queue_from_object (G_OBJECT (widget), _gtk_widget_child_property_notify_context);
2764 if (!nqueue || !nqueue->freeze_count)
2765 g_warning (G_STRLOC ": child-property-changed notification for %s(%p) is not frozen",
2766 G_OBJECT_TYPE_NAME (widget), widget);
2768 g_object_notify_queue_thaw (G_OBJECT (widget), nqueue);
2769 g_object_unref (widget);
2775 * @type: type ID of the widget to create
2776 * @first_property_name: name of first property to set
2777 * @Varargs: value of first property, followed by more properties,
2780 * This is a convenience function for creating a widget and setting
2781 * its properties in one go. For example you might write:
2782 * <literal>gtk_widget_new (GTK_TYPE_LABEL, "label", "Hello World", "xalign",
2783 * 0.0, NULL)</literal> to create a left-aligned label. Equivalent to
2784 * g_object_new(), but returns a widget so you don't have to
2785 * cast the object yourself.
2787 * Return value: a new #GtkWidget of type @widget_type
2790 gtk_widget_new (GType type,
2791 const gchar *first_property_name,
2797 g_return_val_if_fail (g_type_is_a (type, GTK_TYPE_WIDGET), NULL);
2799 va_start (var_args, first_property_name);
2800 widget = (GtkWidget *)g_object_new_valist (type, first_property_name, var_args);
2808 * @widget: a #GtkWidget
2809 * @first_property_name: name of first property to set
2810 * @Varargs: value of first property, followed by more properties,
2813 * Precursor of g_object_set().
2815 * Deprecated: 2.0: Use g_object_set() instead.
2818 gtk_widget_set (GtkWidget *widget,
2819 const gchar *first_property_name,
2824 g_return_if_fail (GTK_IS_WIDGET (widget));
2826 va_start (var_args, first_property_name);
2827 g_object_set_valist (G_OBJECT (widget), first_property_name, var_args);
2832 gtk_widget_queue_draw_child (GtkWidget *widget)
2836 parent = widget->parent;
2837 if (parent && GTK_WIDGET_DRAWABLE (parent))
2838 gtk_widget_queue_draw_area (parent,
2839 widget->allocation.x,
2840 widget->allocation.y,
2841 widget->allocation.width,
2842 widget->allocation.height);
2846 * gtk_widget_unparent:
2847 * @widget: a #GtkWidget
2849 * This function is only for use in widget implementations.
2850 * Should be called by implementations of the remove method
2851 * on #GtkContainer, to dissociate a child from the container.
2854 gtk_widget_unparent (GtkWidget *widget)
2856 GObjectNotifyQueue *nqueue;
2857 GtkWidget *toplevel;
2858 GtkWidget *old_parent;
2860 g_return_if_fail (GTK_IS_WIDGET (widget));
2861 if (widget->parent == NULL)
2864 /* keep this function in sync with gtk_menu_detach()
2867 g_object_freeze_notify (G_OBJECT (widget));
2868 nqueue = g_object_notify_queue_freeze (G_OBJECT (widget), _gtk_widget_child_property_notify_context);
2870 toplevel = gtk_widget_get_toplevel (widget);
2871 if (GTK_WIDGET_TOPLEVEL (toplevel))
2872 _gtk_window_unset_focus_and_default (GTK_WINDOW (toplevel), widget);
2874 if (GTK_CONTAINER (widget->parent)->focus_child == widget)
2875 gtk_container_set_focus_child (GTK_CONTAINER (widget->parent), NULL);
2877 /* If we are unanchoring the child, we save around the toplevel
2878 * to emit hierarchy changed
2880 if (GTK_WIDGET_ANCHORED (widget->parent))
2881 g_object_ref (toplevel);
2885 gtk_widget_queue_draw_child (widget);
2887 /* Reset the width and height here, to force reallocation if we
2888 * get added back to a new parent. This won't work if our new
2889 * allocation is smaller than 1x1 and we actually want a size of 1x1...
2890 * (would 0x0 be OK here?)
2892 widget->allocation.width = 1;
2893 widget->allocation.height = 1;
2895 if (GTK_WIDGET_REALIZED (widget))
2897 if (GTK_WIDGET_IN_REPARENT (widget))
2898 gtk_widget_unmap (widget);
2900 gtk_widget_unrealize (widget);
2903 /* Removing a widget from a container restores the child visible
2904 * flag to the default state, so it doesn't affect the child
2905 * in the next parent.
2907 GTK_PRIVATE_SET_FLAG (widget, GTK_CHILD_VISIBLE);
2909 old_parent = widget->parent;
2910 widget->parent = NULL;
2911 gtk_widget_set_parent_window (widget, NULL);
2912 g_signal_emit (widget, widget_signals[PARENT_SET], 0, old_parent);
2915 _gtk_widget_propagate_hierarchy_changed (widget, toplevel);
2916 g_object_unref (toplevel);
2919 g_object_notify (G_OBJECT (widget), "parent");
2920 g_object_thaw_notify (G_OBJECT (widget));
2921 if (!widget->parent)
2922 g_object_notify_queue_clear (G_OBJECT (widget), nqueue);
2923 g_object_notify_queue_thaw (G_OBJECT (widget), nqueue);
2924 g_object_unref (widget);
2928 * gtk_widget_destroy:
2929 * @widget: a #GtkWidget
2931 * Destroys a widget. Equivalent to gtk_object_destroy(), except that
2932 * you don't have to cast the widget to #GtkObject. When a widget is
2933 * destroyed, it will break any references it holds to other objects.
2934 * If the widget is inside a container, the widget will be removed
2935 * from the container. If the widget is a toplevel (derived from
2936 * #GtkWindow), it will be removed from the list of toplevels, and the
2937 * reference GTK+ holds to it will be removed. Removing a
2938 * widget from its container or the list of toplevels results in the
2939 * widget being finalized, unless you've added additional references
2940 * to the widget with g_object_ref().
2942 * In most cases, only toplevel widgets (windows) require explicit
2943 * destruction, because when you destroy a toplevel its children will
2944 * be destroyed as well.
2947 gtk_widget_destroy (GtkWidget *widget)
2949 g_return_if_fail (GTK_IS_WIDGET (widget));
2951 gtk_object_destroy ((GtkObject*) widget);
2955 * gtk_widget_destroyed:
2956 * @widget: a #GtkWidget
2957 * @widget_pointer: address of a variable that contains @widget
2959 * This function sets *@widget_pointer to %NULL if @widget_pointer !=
2960 * %NULL. It's intended to be used as a callback connected to the
2961 * "destroy" signal of a widget. You connect gtk_widget_destroyed()
2962 * as a signal handler, and pass the address of your widget variable
2963 * as user data. Then when the widget is destroyed, the variable will
2964 * be set to %NULL. Useful for example to avoid multiple copies
2965 * of the same dialog.
2968 gtk_widget_destroyed (GtkWidget *widget,
2969 GtkWidget **widget_pointer)
2971 /* Don't make any assumptions about the
2973 * Even check widget_pointer.
2976 *widget_pointer = NULL;
2981 * @widget: a #GtkWidget
2983 * Flags a widget to be displayed. Any widget that isn't shown will
2984 * not appear on the screen. If you want to show all the widgets in a
2985 * container, it's easier to call gtk_widget_show_all() on the
2986 * container, instead of individually showing the widgets.
2988 * Remember that you have to show the containers containing a widget,
2989 * in addition to the widget itself, before it will appear onscreen.
2991 * When a toplevel container is shown, it is immediately realized and
2992 * mapped; other shown widgets are realized and mapped when their
2993 * toplevel container is realized and mapped.
2996 gtk_widget_show (GtkWidget *widget)
2998 g_return_if_fail (GTK_IS_WIDGET (widget));
3000 if (!GTK_WIDGET_VISIBLE (widget))
3002 g_object_ref (widget);
3003 if (!GTK_WIDGET_TOPLEVEL (widget))
3004 gtk_widget_queue_resize (widget);
3005 g_signal_emit (widget, widget_signals[SHOW], 0);
3006 g_object_notify (G_OBJECT (widget), "visible");
3007 g_object_unref (widget);
3012 gtk_widget_real_show (GtkWidget *widget)
3014 if (!GTK_WIDGET_VISIBLE (widget))
3016 GTK_WIDGET_SET_FLAGS (widget, GTK_VISIBLE);
3018 if (widget->parent &&
3019 GTK_WIDGET_MAPPED (widget->parent) &&
3020 GTK_WIDGET_CHILD_VISIBLE (widget) &&
3021 !GTK_WIDGET_MAPPED (widget))
3022 gtk_widget_map (widget);
3027 gtk_widget_show_map_callback (GtkWidget *widget, GdkEvent *event, gint *flag)
3030 g_signal_handlers_disconnect_by_func (widget,
3031 gtk_widget_show_map_callback,
3036 * gtk_widget_show_now:
3037 * @widget: a #GtkWidget
3039 * Shows a widget. If the widget is an unmapped toplevel widget
3040 * (i.e. a #GtkWindow that has not yet been shown), enter the main
3041 * loop and wait for the window to actually be mapped. Be careful;
3042 * because the main loop is running, anything can happen during
3046 gtk_widget_show_now (GtkWidget *widget)
3050 g_return_if_fail (GTK_IS_WIDGET (widget));
3052 /* make sure we will get event */
3053 if (!GTK_WIDGET_MAPPED (widget) &&
3054 GTK_WIDGET_TOPLEVEL (widget))
3056 gtk_widget_show (widget);
3058 g_signal_connect (widget, "map-event",
3059 G_CALLBACK (gtk_widget_show_map_callback),
3063 gtk_main_iteration ();
3066 gtk_widget_show (widget);
3071 * @widget: a #GtkWidget
3073 * Reverses the effects of gtk_widget_show(), causing the widget to be
3074 * hidden (invisible to the user).
3077 gtk_widget_hide (GtkWidget *widget)
3079 g_return_if_fail (GTK_IS_WIDGET (widget));
3081 if (GTK_WIDGET_VISIBLE (widget))
3083 GtkWidget *toplevel = gtk_widget_get_toplevel (widget);
3085 g_object_ref (widget);
3086 if (toplevel != widget && GTK_WIDGET_TOPLEVEL (toplevel))
3087 _gtk_window_unset_focus_and_default (GTK_WINDOW (toplevel), widget);
3089 g_signal_emit (widget, widget_signals[HIDE], 0);
3090 if (!GTK_WIDGET_TOPLEVEL (widget))
3091 gtk_widget_queue_resize (widget);
3092 g_object_notify (G_OBJECT (widget), "visible");
3093 g_object_unref (widget);
3098 gtk_widget_real_hide (GtkWidget *widget)
3100 if (GTK_WIDGET_VISIBLE (widget))
3102 GTK_WIDGET_UNSET_FLAGS (widget, GTK_VISIBLE);
3104 if (GTK_WIDGET_MAPPED (widget))
3105 gtk_widget_unmap (widget);
3110 * gtk_widget_hide_on_delete:
3111 * @widget: a #GtkWidget
3113 * Utility function; intended to be connected to the #GtkWidget::delete-event
3114 * signal on a #GtkWindow. The function calls gtk_widget_hide() on its
3115 * argument, then returns %TRUE. If connected to ::delete-event, the
3116 * result is that clicking the close button for a window (on the
3117 * window frame, top right corner usually) will hide but not destroy
3118 * the window. By default, GTK+ destroys windows when ::delete-event
3121 * Return value: %TRUE
3124 gtk_widget_hide_on_delete (GtkWidget *widget)
3126 g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
3128 gtk_widget_hide (widget);
3134 * gtk_widget_show_all:
3135 * @widget: a #GtkWidget
3137 * Recursively shows a widget, and any child widgets (if the widget is
3141 gtk_widget_show_all (GtkWidget *widget)
3143 GtkWidgetClass *class;
3145 g_return_if_fail (GTK_IS_WIDGET (widget));
3147 if ((GTK_WIDGET_FLAGS (widget) & GTK_NO_SHOW_ALL) != 0)
3150 class = GTK_WIDGET_GET_CLASS (widget);
3152 if (class->show_all)
3153 class->show_all (widget);
3157 * gtk_widget_hide_all:
3158 * @widget: a #GtkWidget
3160 * Recursively hides a widget and any child widgets.
3163 gtk_widget_hide_all (GtkWidget *widget)
3165 GtkWidgetClass *class;
3167 g_return_if_fail (GTK_IS_WIDGET (widget));
3169 if ((GTK_WIDGET_FLAGS (widget) & GTK_NO_SHOW_ALL) != 0)
3172 class = GTK_WIDGET_GET_CLASS (widget);
3174 if (class->hide_all)
3175 class->hide_all (widget);
3180 * @widget: a #GtkWidget
3182 * This function is only for use in widget implementations. Causes
3183 * a widget to be mapped if it isn't already.
3186 gtk_widget_map (GtkWidget *widget)
3188 g_return_if_fail (GTK_IS_WIDGET (widget));
3189 g_return_if_fail (GTK_WIDGET_VISIBLE (widget));
3190 g_return_if_fail (GTK_WIDGET_CHILD_VISIBLE (widget));
3192 if (!GTK_WIDGET_MAPPED (widget))
3194 if (!GTK_WIDGET_REALIZED (widget))
3195 gtk_widget_realize (widget);
3197 g_signal_emit (widget, widget_signals[MAP], 0);
3199 if (GTK_WIDGET_NO_WINDOW (widget))
3200 gdk_window_invalidate_rect (widget->window, &widget->allocation, FALSE);
3206 * @widget: a #GtkWidget
3208 * This function is only for use in widget implementations. Causes
3209 * a widget to be unmapped if it's currently mapped.
3212 gtk_widget_unmap (GtkWidget *widget)
3214 g_return_if_fail (GTK_IS_WIDGET (widget));
3216 if (GTK_WIDGET_MAPPED (widget))
3218 if (GTK_WIDGET_NO_WINDOW (widget))
3219 gdk_window_invalidate_rect (widget->window, &widget->allocation, FALSE);
3220 _gtk_tooltip_hide (widget);
3221 g_signal_emit (widget, widget_signals[UNMAP], 0);
3226 gtk_widget_set_extension_events_internal (GtkWidget *widget,
3227 GdkExtensionMode mode,
3230 GList *free_list = NULL;
3233 if (window_list == NULL)
3235 if (!GTK_WIDGET_NO_WINDOW (widget))
3236 window_list = g_list_prepend (NULL, widget->window);
3238 window_list = gdk_window_get_children (widget->window);
3240 free_list = window_list;
3243 for (l = window_list; l != NULL; l = l->next)
3245 GdkWindow *window = l->data;
3248 gdk_window_get_user_data (window, &user_data);
3249 if (user_data == widget)
3253 gdk_input_set_extension_events (window,
3254 gdk_window_get_events (window),
3257 children = gdk_window_get_children (window);
3260 gtk_widget_set_extension_events_internal (widget, mode, children);
3261 g_list_free (children);
3267 g_list_free (free_list);
3271 * gtk_widget_realize:
3272 * @widget: a #GtkWidget
3274 * Creates the GDK (windowing system) resources associated with a
3275 * widget. For example, @widget->window will be created when a widget
3276 * is realized. Normally realization happens implicitly; if you show
3277 * a widget and all its parent containers, then the widget will be
3278 * realized and mapped automatically.
3280 * Realizing a widget requires all
3281 * the widget's parent widgets to be realized; calling
3282 * gtk_widget_realize() realizes the widget's parents in addition to
3283 * @widget itself. If a widget is not yet inside a toplevel window
3284 * when you realize it, bad things will happen.
3286 * This function is primarily used in widget implementations, and
3287 * isn't very useful otherwise. Many times when you think you might
3288 * need it, a better approach is to connect to a signal that will be
3289 * called after the widget is realized automatically, such as
3290 * GtkWidget::expose-event. Or simply g_signal_connect () to the
3291 * GtkWidget::realize signal.
3294 gtk_widget_realize (GtkWidget *widget)
3296 GdkExtensionMode mode;
3297 GtkWidgetShapeInfo *shape_info;
3299 g_return_if_fail (GTK_IS_WIDGET (widget));
3300 g_return_if_fail (GTK_WIDGET_ANCHORED (widget) ||
3301 GTK_IS_INVISIBLE (widget));
3303 if (!GTK_WIDGET_REALIZED (widget))
3306 if (GTK_IS_CONTAINER (widget) && !GTK_WIDGET_NO_WINDOW (widget))
3307 g_message ("gtk_widget_realize(%s)", g_type_name (GTK_WIDGET_TYPE (widget)));
3310 if (widget->parent == NULL &&
3311 !GTK_WIDGET_TOPLEVEL (widget))
3312 g_warning ("Calling gtk_widget_realize() on a widget that isn't "
3313 "inside a toplevel window is not going to work very well. "
3314 "Widgets must be inside a toplevel container before realizing them.");
3316 if (widget->parent && !GTK_WIDGET_REALIZED (widget->parent))
3317 gtk_widget_realize (widget->parent);
3319 gtk_widget_ensure_style (widget);
3321 g_signal_emit (widget, widget_signals[REALIZE], 0);
3323 gtk_widget_real_set_has_tooltip (widget,
3324 GPOINTER_TO_UINT (g_object_get_qdata (G_OBJECT (widget), quark_has_tooltip)),
3327 if (GTK_WIDGET_HAS_SHAPE_MASK (widget))
3329 shape_info = g_object_get_qdata (G_OBJECT (widget), quark_shape_info);
3330 gdk_window_shape_combine_mask (widget->window,
3331 shape_info->shape_mask,
3332 shape_info->offset_x,
3333 shape_info->offset_y);
3336 shape_info = g_object_get_qdata (G_OBJECT (widget), quark_input_shape_info);
3338 gdk_window_input_shape_combine_mask (widget->window,
3339 shape_info->shape_mask,
3340 shape_info->offset_x,
3341 shape_info->offset_y);
3343 mode = gtk_widget_get_extension_events (widget);
3344 if (mode != GDK_EXTENSION_EVENTS_NONE)
3345 gtk_widget_set_extension_events_internal (widget, mode, NULL);
3350 * gtk_widget_unrealize:
3351 * @widget: a #GtkWidget
3353 * This function is only useful in widget implementations.
3354 * Causes a widget to be unrealized (frees all GDK resources
3355 * associated with the widget, such as @widget->window).
3358 gtk_widget_unrealize (GtkWidget *widget)
3360 g_return_if_fail (GTK_IS_WIDGET (widget));
3362 if (GTK_WIDGET_HAS_SHAPE_MASK (widget))
3363 gtk_widget_shape_combine_mask (widget, NULL, 0, 0);
3365 if (g_object_get_qdata (G_OBJECT (widget), quark_input_shape_info))
3366 gtk_widget_input_shape_combine_mask (widget, NULL, 0, 0);
3368 if (GTK_WIDGET_REALIZED (widget))
3370 g_object_ref (widget);
3371 _gtk_tooltip_hide (widget);
3372 g_signal_emit (widget, widget_signals[UNREALIZE], 0);
3373 GTK_WIDGET_UNSET_FLAGS (widget, GTK_REALIZED | GTK_MAPPED);
3374 g_object_unref (widget);
3378 /*****************************************
3380 *****************************************/
3383 * gtk_widget_queue_draw_area:
3384 * @widget: a #GtkWidget
3385 * @x: x coordinate of upper-left corner of rectangle to redraw
3386 * @y: y coordinate of upper-left corner of rectangle to redraw
3387 * @width: width of region to draw
3388 * @height: height of region to draw
3390 * Invalidates the rectangular area of @widget defined by @x, @y,
3391 * @width and @height by calling gdk_window_invalidate_rect() on the
3392 * widget's window and all its child windows. Once the main loop
3393 * becomes idle (after the current batch of events has been processed,
3394 * roughly), the window will receive expose events for the union of
3395 * all regions that have been invalidated.
3397 * Normally you would only use this function in widget
3398 * implementations. You might also use it, or
3399 * gdk_window_invalidate_rect() directly, to schedule a redraw of a
3400 * #GtkDrawingArea or some portion thereof.
3402 * Frequently you can just call gdk_window_invalidate_rect() or
3403 * gdk_window_invalidate_region() instead of this function. Those
3404 * functions will invalidate only a single window, instead of the
3405 * widget and all its children.
3407 * The advantage of adding to the invalidated region compared to
3408 * simply drawing immediately is efficiency; using an invalid region
3409 * ensures that you only have to redraw one time.
3412 gtk_widget_queue_draw_area (GtkWidget *widget,
3418 GdkRectangle invalid_rect;
3421 g_return_if_fail (GTK_IS_WIDGET (widget));
3423 if (!GTK_WIDGET_REALIZED (widget))
3426 /* Just return if the widget or one of its ancestors isn't mapped */
3427 for (w = widget; w != NULL; w = w->parent)
3428 if (!GTK_WIDGET_MAPPED (w))
3431 /* Find the correct widget */
3433 if (!GTK_WIDGET_NO_WINDOW (widget))
3437 /* Translate widget relative to window-relative */
3439 gint wx, wy, wwidth, wheight;
3441 gdk_window_get_position (widget->window, &wx, &wy);
3442 x -= wx - widget->allocation.x;
3443 y -= wy - widget->allocation.y;
3445 gdk_drawable_get_size (widget->window, &wwidth, &wheight);
3447 if (x + width <= 0 || y + height <= 0 ||
3448 x >= wwidth || y >= wheight)
3459 if (x + width > wwidth)
3461 if (y + height > wheight)
3462 height = wheight - y;
3468 invalid_rect.width = width;
3469 invalid_rect.height = height;
3471 gdk_window_invalidate_rect (widget->window, &invalid_rect, TRUE);
3475 widget_add_child_draw_rectangle (GtkWidget *widget,
3478 GdkRectangle child_rect;
3480 if (!GTK_WIDGET_MAPPED (widget) ||
3481 widget->window != widget->parent->window)
3484 gtk_widget_get_draw_rectangle (widget, &child_rect);
3485 gdk_rectangle_union (rect, &child_rect, rect);
3489 gtk_widget_get_draw_rectangle (GtkWidget *widget,
3492 if (GTK_WIDGET_NO_WINDOW (widget))
3494 GtkBorder *draw_border = NULL;
3496 *rect = widget->allocation;
3498 gtk_widget_style_get (widget,
3499 "draw-border", &draw_border,
3503 rect->x -= draw_border->left;
3504 rect->y -= draw_border->top;
3505 rect->width += draw_border->left + draw_border->right;
3506 rect->height += draw_border->top + draw_border->bottom;
3508 gtk_border_free (draw_border);
3511 if (GTK_IS_CONTAINER (widget))
3512 gtk_container_forall (GTK_CONTAINER (widget),
3513 (GtkCallback)widget_add_child_draw_rectangle,
3520 rect->width = widget->allocation.width;
3521 rect->height = widget->allocation.height;
3526 * gtk_widget_queue_draw:
3527 * @widget: a #GtkWidget
3529 * Equivalent to calling gtk_widget_queue_draw_area() for the
3530 * entire area of a widget.
3533 gtk_widget_queue_draw (GtkWidget *widget)
3537 g_return_if_fail (GTK_IS_WIDGET (widget));
3539 gtk_widget_get_draw_rectangle (widget, &rect);
3541 gtk_widget_queue_draw_area (widget,
3543 rect.width, rect.height);
3546 /* Invalidates the given area (allocation-relative-coordinates)
3547 * in all of the widget's windows
3550 * gtk_widget_queue_clear_area:
3551 * @widget: a #GtkWidget
3552 * @x: x coordinate of upper-left corner of rectangle to redraw
3553 * @y: y coordinate of upper-left corner of rectangle to redraw
3554 * @width: width of region to draw
3555 * @height: height of region to draw
3557 * This function is no longer different from
3558 * gtk_widget_queue_draw_area(), though it once was. Now it just calls
3559 * gtk_widget_queue_draw_area(). Originally
3560 * gtk_widget_queue_clear_area() would force a redraw of the
3561 * background for %GTK_NO_WINDOW widgets, and
3562 * gtk_widget_queue_draw_area() would not. Now both functions ensure
3563 * the background will be redrawn.
3565 * Deprecated: 2.2: Use gtk_widget_queue_draw_area() instead.
3568 gtk_widget_queue_clear_area (GtkWidget *widget,
3574 g_return_if_fail (GTK_IS_WIDGET (widget));
3576 gtk_widget_queue_draw_area (widget, x, y, width, height);
3580 * gtk_widget_queue_clear:
3581 * @widget: a #GtkWidget
3583 * This function does the same as gtk_widget_queue_draw().
3585 * Deprecated: 2.2: Use gtk_widget_queue_draw() instead.
3588 gtk_widget_queue_clear (GtkWidget *widget)
3590 g_return_if_fail (GTK_IS_WIDGET (widget));
3592 gtk_widget_queue_draw (widget);
3596 * gtk_widget_queue_resize:
3597 * @widget: a #GtkWidget
3599 * This function is only for use in widget implementations.
3600 * Flags a widget to have its size renegotiated; should
3601 * be called when a widget for some reason has a new size request.
3602 * For example, when you change the text in a #GtkLabel, #GtkLabel
3603 * queues a resize to ensure there's enough space for the new text.
3606 gtk_widget_queue_resize (GtkWidget *widget)
3608 g_return_if_fail (GTK_IS_WIDGET (widget));
3610 if (GTK_WIDGET_REALIZED (widget))
3611 gtk_widget_queue_shallow_draw (widget);
3613 _gtk_size_group_queue_resize (widget);
3617 * gtk_widget_queue_resize_no_redraw:
3618 * @widget: a #GtkWidget
3620 * This function works like gtk_widget_queue_resize(),
3621 * except that the widget is not invalidated.
3626 gtk_widget_queue_resize_no_redraw (GtkWidget *widget)
3628 g_return_if_fail (GTK_IS_WIDGET (widget));
3630 _gtk_size_group_queue_resize (widget);
3635 * @widget: a #GtkWidget
3636 * @area: area to draw
3638 * In GTK+ 1.2, this function would immediately render the
3639 * region @area of a widget, by invoking the virtual draw method of a
3640 * widget. In GTK+ 2.0, the draw method is gone, and instead
3641 * gtk_widget_draw() simply invalidates the specified region of the
3642 * widget, then updates the invalid region of the widget immediately.
3643 * Usually you don't want to update the region immediately for
3644 * performance reasons, so in general gtk_widget_queue_draw_area() is
3645 * a better choice if you want to draw a region of a widget.
3648 gtk_widget_draw (GtkWidget *widget,
3649 const GdkRectangle *area)
3651 g_return_if_fail (GTK_IS_WIDGET (widget));
3653 if (GTK_WIDGET_DRAWABLE (widget))
3656 gtk_widget_queue_draw_area (widget,
3658 area->width, area->height);
3660 gtk_widget_queue_draw (widget);
3662 gdk_window_process_updates (widget->window, TRUE);
3667 * gtk_widget_size_request:
3668 * @widget: a #GtkWidget
3669 * @requisition: a #GtkRequisition to be filled in
3671 * This function is typically used when implementing a #GtkContainer
3672 * subclass. Obtains the preferred size of a widget. The container
3673 * uses this information to arrange its child widgets and decide what
3674 * size allocations to give them with gtk_widget_size_allocate().
3676 * You can also call this function from an application, with some
3677 * caveats. Most notably, getting a size request requires the widget
3678 * to be associated with a screen, because font information may be
3679 * needed. Multihead-aware applications should keep this in mind.
3681 * Also remember that the size request is not necessarily the size
3682 * a widget will actually be allocated.
3684 * See also gtk_widget_get_child_requisition().
3687 gtk_widget_size_request (GtkWidget *widget,
3688 GtkRequisition *requisition)
3690 g_return_if_fail (GTK_IS_WIDGET (widget));
3692 #ifdef G_ENABLE_DEBUG
3693 if (requisition == &widget->requisition)
3694 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.");
3695 #endif /* G_ENABLE_DEBUG */
3697 _gtk_size_group_compute_requisition (widget, requisition);
3701 * gtk_widget_get_child_requisition:
3702 * @widget: a #GtkWidget
3703 * @requisition: a #GtkRequisition to be filled in
3705 * This function is only for use in widget implementations. Obtains
3706 * @widget->requisition, unless someone has forced a particular
3707 * geometry on the widget (e.g. with gtk_widget_set_size_request()),
3708 * in which case it returns that geometry instead of the widget's
3711 * This function differs from gtk_widget_size_request() in that
3712 * it retrieves the last size request value from @widget->requisition,
3713 * while gtk_widget_size_request() actually calls the "size_request" method
3714 * on @widget to compute the size request and fill in @widget->requisition,
3715 * and only then returns @widget->requisition.
3717 * Because this function does not call the "size_request" method, it
3718 * can only be used when you know that @widget->requisition is
3719 * up-to-date, that is, gtk_widget_size_request() has been called
3720 * since the last time a resize was queued. In general, only container
3721 * implementations have this information; applications should use
3722 * gtk_widget_size_request().
3725 gtk_widget_get_child_requisition (GtkWidget *widget,
3726 GtkRequisition *requisition)
3728 _gtk_size_group_get_child_requisition (widget, requisition);
3732 invalidate_predicate (GdkWindow *window,
3737 gdk_window_get_user_data (window, &user_data);
3739 return (user_data == data);
3742 /* Invalidate @region in widget->window and all children
3743 * of widget->window owned by widget. @region is in the
3744 * same coordinates as widget->allocation and will be
3745 * modified by this call.
3748 gtk_widget_invalidate_widget_windows (GtkWidget *widget,
3751 if (!GTK_WIDGET_REALIZED (widget))
3754 if (!GTK_WIDGET_NO_WINDOW (widget) && widget->parent)
3758 gdk_window_get_position (widget->window, &x, &y);
3759 gdk_region_offset (region, -x, -y);
3762 gdk_window_invalidate_maybe_recurse (widget->window, region,
3763 invalidate_predicate, widget);
3767 * gtk_widget_queue_shallow_draw:
3768 * @widget: a #GtkWidget
3770 * Like gtk_widget_queue_draw(), but only windows owned
3771 * by @widget are invalidated.
3774 gtk_widget_queue_shallow_draw (GtkWidget *widget)
3779 if (!GTK_WIDGET_REALIZED (widget))
3782 gtk_widget_get_draw_rectangle (widget, &rect);
3784 /* get_draw_rectangle() gives us window coordinates, we
3785 * need to convert to the coordinates that widget->allocation
3788 if (!GTK_WIDGET_NO_WINDOW (widget) && widget->parent)
3792 gdk_window_get_position (widget->window, &wx, &wy);
3798 region = gdk_region_rectangle (&rect);
3799 gtk_widget_invalidate_widget_windows (widget, region);
3800 gdk_region_destroy (region);
3804 * gtk_widget_size_allocate:
3805 * @widget: a #GtkWidget
3806 * @allocation: position and size to be allocated to @widget
3808 * This function is only used by #GtkContainer subclasses, to assign a size
3809 * and position to their child widgets.
3812 gtk_widget_size_allocate (GtkWidget *widget,
3813 GtkAllocation *allocation)
3815 GtkWidgetAuxInfo *aux_info;
3816 GdkRectangle real_allocation;
3817 GdkRectangle old_allocation;
3818 gboolean alloc_needed;
3819 gboolean size_changed;
3820 gboolean position_changed;
3822 g_return_if_fail (GTK_IS_WIDGET (widget));
3824 #ifdef G_ENABLE_DEBUG
3825 if (gtk_debug_flags & GTK_DEBUG_GEOMETRY)
3836 parent = gtk_widget_get_parent (parent);
3839 name = g_type_name (G_OBJECT_TYPE (G_OBJECT (widget)));
3840 g_print ("gtk_widget_size_allocate: %*s%s %d %d\n",
3841 2 * depth, " ", name,
3842 allocation->width, allocation->height);
3844 #endif /* G_ENABLE_DEBUG */
3846 alloc_needed = GTK_WIDGET_ALLOC_NEEDED (widget);
3847 if (!GTK_WIDGET_REQUEST_NEEDED (widget)) /* Preserve request/allocate ordering */
3848 GTK_PRIVATE_UNSET_FLAG (widget, GTK_ALLOC_NEEDED);
3850 old_allocation = widget->allocation;
3851 real_allocation = *allocation;
3852 aux_info =_gtk_widget_get_aux_info (widget, FALSE);
3856 if (aux_info->x_set)
3857 real_allocation.x = aux_info->x;
3858 if (aux_info->y_set)
3859 real_allocation.y = aux_info->y;
3862 if (real_allocation.width < 0 || real_allocation.height < 0)
3864 g_warning ("gtk_widget_size_allocate(): attempt to allocate widget with width %d and height %d",
3865 real_allocation.width,
3866 real_allocation.height);
3869 real_allocation.width = MAX (real_allocation.width, 1);
3870 real_allocation.height = MAX (real_allocation.height, 1);
3872 size_changed = (old_allocation.width != real_allocation.width ||
3873 old_allocation.height != real_allocation.height);
3874 position_changed = (old_allocation.x != real_allocation.x ||
3875 old_allocation.y != real_allocation.y);
3877 if (!alloc_needed && !size_changed && !position_changed)
3880 g_signal_emit (widget, widget_signals[SIZE_ALLOCATE], 0, &real_allocation);
3882 if (GTK_WIDGET_MAPPED (widget))
3884 if (GTK_WIDGET_NO_WINDOW (widget) && GTK_WIDGET_REDRAW_ON_ALLOC (widget) && position_changed)
3886 /* Invalidate union(old_allaction,widget->allocation) in widget->window
3888 GdkRegion *invalidate = gdk_region_rectangle (&widget->allocation);
3889 gdk_region_union_with_rect (invalidate, &old_allocation);
3891 gdk_window_invalidate_region (widget->window, invalidate, FALSE);
3892 gdk_region_destroy (invalidate);
3897 if (GTK_WIDGET_REDRAW_ON_ALLOC (widget))
3899 /* Invalidate union(old_allaction,widget->allocation) in widget->window and descendents owned by widget
3901 GdkRegion *invalidate = gdk_region_rectangle (&widget->allocation);
3902 gdk_region_union_with_rect (invalidate, &old_allocation);
3904 gtk_widget_invalidate_widget_windows (widget, invalidate);
3905 gdk_region_destroy (invalidate);
3910 if ((size_changed || position_changed) && widget->parent &&
3911 GTK_WIDGET_REALIZED (widget->parent) && GTK_CONTAINER (widget->parent)->reallocate_redraws)
3913 GdkRegion *invalidate = gdk_region_rectangle (&widget->parent->allocation);
3914 gtk_widget_invalidate_widget_windows (widget->parent, invalidate);
3915 gdk_region_destroy (invalidate);
3920 * gtk_widget_common_ancestor:
3921 * @widget_a: a #GtkWidget
3922 * @widget_b: a #GtkWidget
3924 * Find the common ancestor of @widget_a and @widget_b that
3925 * is closest to the two widgets.
3927 * Return value: the closest common ancestor of @widget_a and
3928 * @widget_b or %NULL if @widget_a and @widget_b do not
3929 * share a common ancestor.
3932 gtk_widget_common_ancestor (GtkWidget *widget_a,
3933 GtkWidget *widget_b)
3935 GtkWidget *parent_a;
3936 GtkWidget *parent_b;
3940 parent_a = widget_a;
3941 while (parent_a->parent)
3943 parent_a = parent_a->parent;
3947 parent_b = widget_b;
3948 while (parent_b->parent)
3950 parent_b = parent_b->parent;
3954 if (parent_a != parent_b)
3957 while (depth_a > depth_b)
3959 widget_a = widget_a->parent;
3963 while (depth_b > depth_a)
3965 widget_b = widget_b->parent;
3969 while (widget_a != widget_b)
3971 widget_a = widget_a->parent;
3972 widget_b = widget_b->parent;
3979 * gtk_widget_translate_coordinates:
3980 * @src_widget: a #GtkWidget
3981 * @dest_widget: a #GtkWidget
3982 * @src_x: X position relative to @src_widget
3983 * @src_y: Y position relative to @src_widget
3984 * @dest_x: location to store X position relative to @dest_widget
3985 * @dest_y: location to store Y position relative to @dest_widget
3987 * Translate coordinates relative to @src_widget's allocation to coordinates
3988 * relative to @dest_widget's allocations. In order to perform this
3989 * operation, both widgets must be realized, and must share a common
3992 * Return value: %FALSE if either widget was not realized, or there
3993 * was no common ancestor. In this case, nothing is stored in
3994 * *@dest_x and *@dest_y. Otherwise %TRUE.
3997 gtk_widget_translate_coordinates (GtkWidget *src_widget,
3998 GtkWidget *dest_widget,
4004 GtkWidget *ancestor;
4007 g_return_val_if_fail (GTK_IS_WIDGET (src_widget), FALSE);
4008 g_return_val_if_fail (GTK_IS_WIDGET (dest_widget), FALSE);
4010 ancestor = gtk_widget_common_ancestor (src_widget, dest_widget);
4011 if (!ancestor || !GTK_WIDGET_REALIZED (src_widget) || !GTK_WIDGET_REALIZED (dest_widget))
4014 /* Translate from allocation relative to window relative */
4015 if (!GTK_WIDGET_NO_WINDOW (src_widget) && src_widget->parent)
4018 gdk_window_get_position (src_widget->window, &wx, &wy);
4020 src_x -= wx - src_widget->allocation.x;
4021 src_y -= wy - src_widget->allocation.y;
4025 src_x += src_widget->allocation.x;
4026 src_y += src_widget->allocation.y;
4029 /* Translate to the common ancestor */
4030 window = src_widget->window;
4031 while (window != ancestor->window)
4035 gdk_window_get_position (window, &dx, &dy);
4040 window = gdk_window_get_parent (window);
4042 if (!window) /* Handle GtkHandleBox */
4047 window = dest_widget->window;
4048 while (window != ancestor->window)
4052 gdk_window_get_position (window, &dx, &dy);
4057 window = gdk_window_get_parent (window);
4059 if (!window) /* Handle GtkHandleBox */
4063 /* Translate from window relative to allocation relative */
4064 if (!GTK_WIDGET_NO_WINDOW (dest_widget) && dest_widget->parent)
4067 gdk_window_get_position (dest_widget->window, &wx, &wy);
4069 src_x += wx - dest_widget->allocation.x;
4070 src_y += wy - dest_widget->allocation.y;
4074 src_x -= dest_widget->allocation.x;
4075 src_y -= dest_widget->allocation.y;
4087 gtk_widget_real_size_allocate (GtkWidget *widget,
4088 GtkAllocation *allocation)
4090 widget->allocation = *allocation;
4092 if (GTK_WIDGET_REALIZED (widget) &&
4093 !GTK_WIDGET_NO_WINDOW (widget))
4095 gdk_window_move_resize (widget->window,
4096 allocation->x, allocation->y,
4097 allocation->width, allocation->height);
4102 gtk_widget_real_can_activate_accel (GtkWidget *widget,
4105 /* widgets must be onscreen for accels to take effect */
4106 return GTK_WIDGET_IS_SENSITIVE (widget) && GTK_WIDGET_DRAWABLE (widget) && gdk_window_is_viewable (widget->window);
4110 * gtk_widget_can_activate_accel:
4111 * @widget: a #GtkWidget
4112 * @signal_id: the ID of a signal installed on @widget
4114 * Determines whether an accelerator that activates the signal
4115 * identified by @signal_id can currently be activated.
4116 * This is done by emitting the #GtkWidget::can-activate-accel
4117 * signal on @widget; if the signal isn't overridden by a
4118 * handler or in a derived widget, then the default check is
4119 * that the widget must be sensitive, and the widget and all
4120 * its ancestors mapped.
4122 * Return value: %TRUE if the accelerator can be activated.
4127 gtk_widget_can_activate_accel (GtkWidget *widget,
4130 gboolean can_activate = FALSE;
4131 g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
4132 g_signal_emit (widget, widget_signals[CAN_ACTIVATE_ACCEL], 0, signal_id, &can_activate);
4133 return can_activate;
4142 closure_accel_activate (GClosure *closure,
4143 GValue *return_value,
4144 guint n_param_values,
4145 const GValue *param_values,
4146 gpointer invocation_hint,
4147 gpointer marshal_data)
4149 AccelClosure *aclosure = (AccelClosure*) closure;
4150 gboolean can_activate = gtk_widget_can_activate_accel (closure->data, aclosure->signal_id);
4153 g_signal_emit (closure->data, aclosure->signal_id, 0);
4155 /* whether accelerator was handled */
4156 g_value_set_boolean (return_value, can_activate);
4160 closures_destroy (gpointer data)
4162 GSList *slist, *closures = data;
4164 for (slist = closures; slist; slist = slist->next)
4166 g_closure_invalidate (slist->data);
4167 g_closure_unref (slist->data);
4169 g_slist_free (closures);
4173 widget_new_accel_closure (GtkWidget *widget,
4176 AccelClosure *aclosure;
4177 GClosure *closure = NULL;
4178 GSList *slist, *closures;
4180 closures = g_object_steal_qdata (G_OBJECT (widget), quark_accel_closures);
4181 for (slist = closures; slist; slist = slist->next)
4182 if (!gtk_accel_group_from_accel_closure (slist->data))
4184 /* reuse this closure */
4185 closure = slist->data;
4190 closure = g_closure_new_object (sizeof (AccelClosure), G_OBJECT (widget));
4191 closures = g_slist_prepend (closures, g_closure_ref (closure));
4192 g_closure_sink (closure);
4193 g_closure_set_marshal (closure, closure_accel_activate);
4195 g_object_set_qdata_full (G_OBJECT (widget), quark_accel_closures, closures, closures_destroy);
4197 aclosure = (AccelClosure*) closure;
4198 g_assert (closure->data == widget);
4199 g_assert (closure->marshal == closure_accel_activate);
4200 aclosure->signal_id = signal_id;
4206 * gtk_widget_add_accelerator
4207 * @widget: widget to install an accelerator on
4208 * @accel_signal: widget signal to emit on accelerator activation
4209 * @accel_group: accel group for this widget, added to its toplevel
4210 * @accel_key: GDK keyval of the accelerator
4211 * @accel_mods: modifier key combination of the accelerator
4212 * @accel_flags: flag accelerators, e.g. %GTK_ACCEL_VISIBLE
4214 * Installs an accelerator for this @widget in @accel_group that causes
4215 * @accel_signal to be emitted if the accelerator is activated.
4216 * The @accel_group needs to be added to the widget's toplevel via
4217 * gtk_window_add_accel_group(), and the signal must be of type %G_RUN_ACTION.
4218 * Accelerators added through this function are not user changeable during
4219 * runtime. If you want to support accelerators that can be changed by the
4220 * user, use gtk_accel_map_add_entry() and gtk_widget_set_accel_path() or
4221 * gtk_menu_item_set_accel_path() instead.
4224 gtk_widget_add_accelerator (GtkWidget *widget,
4225 const gchar *accel_signal,
4226 GtkAccelGroup *accel_group,
4228 GdkModifierType accel_mods,
4229 GtkAccelFlags accel_flags)
4234 g_return_if_fail (GTK_IS_WIDGET (widget));
4235 g_return_if_fail (accel_signal != NULL);
4236 g_return_if_fail (GTK_IS_ACCEL_GROUP (accel_group));
4238 g_signal_query (g_signal_lookup (accel_signal, G_OBJECT_TYPE (widget)), &query);
4239 if (!query.signal_id ||
4240 !(query.signal_flags & G_SIGNAL_ACTION) ||
4241 query.return_type != G_TYPE_NONE ||
4244 /* hmm, should be elaborate enough */
4245 g_warning (G_STRLOC ": widget `%s' has no activatable signal \"%s\" without arguments",
4246 G_OBJECT_TYPE_NAME (widget), accel_signal);
4250 closure = widget_new_accel_closure (widget, query.signal_id);
4252 g_object_ref (widget);
4254 /* install the accelerator. since we don't map this onto an accel_path,
4255 * the accelerator will automatically be locked.
4257 gtk_accel_group_connect (accel_group,
4260 accel_flags | GTK_ACCEL_LOCKED,
4263 g_signal_emit (widget, widget_signals[ACCEL_CLOSURES_CHANGED], 0);
4265 g_object_unref (widget);
4269 * gtk_widget_remove_accelerator:
4270 * @widget: widget to install an accelerator on
4271 * @accel_group: accel group for this widget
4272 * @accel_key: GDK keyval of the accelerator
4273 * @accel_mods: modifier key combination of the accelerator
4274 * @returns: whether an accelerator was installed and could be removed
4276 * Removes an accelerator from @widget, previously installed with
4277 * gtk_widget_add_accelerator().
4280 gtk_widget_remove_accelerator (GtkWidget *widget,
4281 GtkAccelGroup *accel_group,
4283 GdkModifierType accel_mods)
4285 GtkAccelGroupEntry *ag_entry;
4286 GList *slist, *clist;
4289 g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
4290 g_return_val_if_fail (GTK_IS_ACCEL_GROUP (accel_group), FALSE);
4292 ag_entry = gtk_accel_group_query (accel_group, accel_key, accel_mods, &n);
4293 clist = gtk_widget_list_accel_closures (widget);
4294 for (slist = clist; slist; slist = slist->next)
4298 for (i = 0; i < n; i++)
4299 if (slist->data == (gpointer) ag_entry[i].closure)
4301 gboolean is_removed = gtk_accel_group_disconnect (accel_group, slist->data);
4303 g_signal_emit (widget, widget_signals[ACCEL_CLOSURES_CHANGED], 0);
4305 g_list_free (clist);
4310 g_list_free (clist);
4312 g_warning (G_STRLOC ": no accelerator (%u,%u) installed in accel group (%p) for %s (%p)",
4313 accel_key, accel_mods, accel_group,
4314 G_OBJECT_TYPE_NAME (widget), widget);
4320 * gtk_widget_list_accel_closures
4321 * @widget: widget to list accelerator closures for
4322 * @returns: a newly allocated #GList of closures
4324 * Lists the closures used by @widget for accelerator group connections
4325 * with gtk_accel_group_connect_by_path() or gtk_accel_group_connect().
4326 * The closures can be used to monitor accelerator changes on @widget,
4327 * by connecting to the @GtkAccelGroup::accel-changed signal of the
4328 * #GtkAccelGroup of a closure which can be found out with
4329 * gtk_accel_group_from_accel_closure().
4332 gtk_widget_list_accel_closures (GtkWidget *widget)
4335 GList *clist = NULL;
4337 g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
4339 for (slist = g_object_get_qdata (G_OBJECT (widget), quark_accel_closures); slist; slist = slist->next)
4340 if (gtk_accel_group_from_accel_closure (slist->data))
4341 clist = g_list_prepend (clist, slist->data);
4347 GtkAccelGroup *accel_group;
4352 destroy_accel_path (gpointer data)
4354 AccelPath *apath = data;
4356 gtk_accel_group_disconnect (apath->accel_group, apath->closure);
4358 /* closures_destroy takes care of unrefing the closure */
4359 g_object_unref (apath->accel_group);
4361 g_slice_free (AccelPath, apath);
4366 * gtk_widget_set_accel_path:
4367 * @widget: a #GtkWidget
4368 * @accel_path: path used to look up the accelerator
4369 * @accel_group: a #GtkAccelGroup.
4371 * Given an accelerator group, @accel_group, and an accelerator path,
4372 * @accel_path, sets up an accelerator in @accel_group so whenever the
4373 * key binding that is defined for @accel_path is pressed, @widget
4374 * will be activated. This removes any accelerators (for any
4375 * accelerator group) installed by previous calls to
4376 * gtk_widget_set_accel_path(). Associating accelerators with
4377 * paths allows them to be modified by the user and the modifications
4378 * to be saved for future use. (See gtk_accel_map_save().)
4380 * This function is a low level function that would most likely
4381 * be used by a menu creation system like #GtkUIManager. If you
4382 * use #GtkUIManager, setting up accelerator paths will be done
4385 * Even when you you aren't using #GtkUIManager, if you only want to
4386 * set up accelerators on menu items gtk_menu_item_set_accel_path()
4387 * provides a somewhat more convenient interface.
4389 * Note that @accel_path string will be stored in a #GQuark. Therefore, if you
4390 * pass a static string, you can save some memory by interning it first with
4391 * g_intern_static_string().
4394 gtk_widget_set_accel_path (GtkWidget *widget,
4395 const gchar *accel_path,
4396 GtkAccelGroup *accel_group)
4400 g_return_if_fail (GTK_IS_WIDGET (widget));
4401 g_return_if_fail (GTK_WIDGET_GET_CLASS (widget)->activate_signal != 0);
4405 g_return_if_fail (GTK_IS_ACCEL_GROUP (accel_group));
4406 g_return_if_fail (_gtk_accel_path_is_valid (accel_path));
4408 gtk_accel_map_add_entry (accel_path, 0, 0);
4409 apath = g_slice_new (AccelPath);
4410 apath->accel_group = g_object_ref (accel_group);
4411 apath->path_quark = g_quark_from_string (accel_path);
4412 apath->closure = widget_new_accel_closure (widget, GTK_WIDGET_GET_CLASS (widget)->activate_signal);
4417 /* also removes possible old settings */
4418 g_object_set_qdata_full (G_OBJECT (widget), quark_accel_path, apath, destroy_accel_path);
4421 gtk_accel_group_connect_by_path (apath->accel_group, g_quark_to_string (apath->path_quark), apath->closure);
4423 g_signal_emit (widget, widget_signals[ACCEL_CLOSURES_CHANGED], 0);
4427 _gtk_widget_get_accel_path (GtkWidget *widget,
4432 g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
4434 apath = g_object_get_qdata (G_OBJECT (widget), quark_accel_path);
4436 *locked = apath ? apath->accel_group->lock_count > 0 : TRUE;
4437 return apath ? g_quark_to_string (apath->path_quark) : NULL;
4441 gtk_widget_mnemonic_activate (GtkWidget *widget,
4442 gboolean group_cycling)
4446 g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
4448 group_cycling = group_cycling != FALSE;
4449 if (!GTK_WIDGET_IS_SENSITIVE (widget))
4452 g_signal_emit (widget,
4453 widget_signals[MNEMONIC_ACTIVATE],
4461 gtk_widget_real_mnemonic_activate (GtkWidget *widget,
4462 gboolean group_cycling)
4464 if (!group_cycling && GTK_WIDGET_GET_CLASS (widget)->activate_signal)
4465 gtk_widget_activate (widget);
4466 else if (GTK_WIDGET_CAN_FOCUS (widget))
4467 gtk_widget_grab_focus (widget);
4470 g_warning ("widget `%s' isn't suitable for mnemonic activation",
4471 G_OBJECT_TYPE_NAME (widget));
4472 gtk_widget_error_bell (widget);
4478 gtk_widget_real_key_press_event (GtkWidget *widget,
4481 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
4485 gtk_widget_real_key_release_event (GtkWidget *widget,
4488 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
4492 gtk_widget_real_focus_in_event (GtkWidget *widget,
4493 GdkEventFocus *event)
4495 gtk_widget_queue_shallow_draw (widget);
4501 gtk_widget_real_focus_out_event (GtkWidget *widget,
4502 GdkEventFocus *event)
4504 gtk_widget_queue_shallow_draw (widget);
4509 #define WIDGET_REALIZED_FOR_EVENT(widget, event) \
4510 (event->type == GDK_FOCUS_CHANGE || GTK_WIDGET_REALIZED(widget))
4514 * @widget: a #GtkWidget
4515 * @event: a #GdkEvent
4517 * Rarely-used function. This function is used to emit
4518 * the event signals on a widget (those signals should never
4519 * be emitted without using this function to do so).
4520 * If you want to synthesize an event though, don't use this function;
4521 * instead, use gtk_main_do_event() so the event will behave as if
4522 * it were in the event queue. Don't synthesize expose events; instead,
4523 * use gdk_window_invalidate_rect() to invalidate a region of the
4526 * Return value: return from the event signal emission (%TRUE if
4527 * the event was handled)
4530 gtk_widget_event (GtkWidget *widget,
4533 g_return_val_if_fail (GTK_IS_WIDGET (widget), TRUE);
4534 g_return_val_if_fail (WIDGET_REALIZED_FOR_EVENT (widget, event), TRUE);
4536 if (event->type == GDK_EXPOSE)
4538 g_warning ("Events of type GDK_EXPOSE cannot be synthesized. To get "
4539 "the same effect, call gdk_window_invalidate_rect/region(), "
4540 "followed by gdk_window_process_updates().");
4544 return gtk_widget_event_internal (widget, event);
4549 * gtk_widget_send_expose:
4550 * @widget: a #GtkWidget
4551 * @event: a expose #GdkEvent
4553 * Very rarely-used function. This function is used to emit
4554 * an expose event signals on a widget. This function is not
4555 * normally used directly. The only time it is used is when
4556 * propagating an expose event to a child %NO_WINDOW widget, and
4557 * that is normally done using gtk_container_propagate_expose().
4559 * If you want to force an area of a window to be redrawn,
4560 * use gdk_window_invalidate_rect() or gdk_window_invalidate_region().
4561 * To cause the redraw to be done immediately, follow that call
4562 * with a call to gdk_window_process_updates().
4564 * Return value: return from the event signal emission (%TRUE if
4565 * the event was handled)
4568 gtk_widget_send_expose (GtkWidget *widget,
4571 g_return_val_if_fail (GTK_IS_WIDGET (widget), TRUE);
4572 g_return_val_if_fail (GTK_WIDGET_REALIZED (widget), TRUE);
4573 g_return_val_if_fail (event != NULL, TRUE);
4574 g_return_val_if_fail (event->type == GDK_EXPOSE, TRUE);
4576 return gtk_widget_event_internal (widget, event);
4580 event_window_is_still_viewable (GdkEvent *event)
4582 /* Some programs, such as gnome-theme-manager, fake widgets
4583 * into exposing onto a pixmap by sending expose events with
4584 * event->window pointing to a pixmap
4586 if (GDK_IS_PIXMAP (event->any.window))
4587 return event->type == GDK_EXPOSE;
4589 /* Check that we think the event's window is viewable before
4590 * delivering the event, to prevent suprises. We do this here
4591 * at the last moment, since the event may have been queued
4592 * up behind other events, held over a recursive main loop, etc.
4594 switch (event->type)
4597 case GDK_MOTION_NOTIFY:
4598 case GDK_BUTTON_PRESS:
4599 case GDK_2BUTTON_PRESS:
4600 case GDK_3BUTTON_PRESS:
4602 case GDK_ENTER_NOTIFY:
4603 case GDK_PROXIMITY_IN:
4605 return event->any.window && gdk_window_is_viewable (event->any.window);
4608 /* The following events are the second half of paired events;
4609 * we always deliver them to deal with widgets that clean up
4610 * on the second half.
4612 case GDK_BUTTON_RELEASE:
4613 case GDK_KEY_RELEASE:
4614 case GDK_LEAVE_NOTIFY:
4615 case GDK_PROXIMITY_OUT:
4619 /* Remaining events would make sense on an not-viewable window,
4620 * or don't have an associated window.
4627 gtk_widget_event_internal (GtkWidget *widget,
4630 gboolean return_val = FALSE;
4632 /* We check only once for is-still-visible; if someone
4633 * hides the window in on of the signals on the widget,
4634 * they are responsible for returning TRUE to terminate
4637 if (!event_window_is_still_viewable (event))
4640 g_object_ref (widget);
4642 g_signal_emit (widget, widget_signals[EVENT], 0, event, &return_val);
4643 return_val |= !WIDGET_REALIZED_FOR_EVENT (widget, event);
4648 switch (event->type)
4653 case GDK_BUTTON_PRESS:
4654 case GDK_2BUTTON_PRESS:
4655 case GDK_3BUTTON_PRESS:
4656 signal_num = BUTTON_PRESS_EVENT;
4659 signal_num = SCROLL_EVENT;
4661 case GDK_BUTTON_RELEASE:
4662 signal_num = BUTTON_RELEASE_EVENT;
4664 case GDK_MOTION_NOTIFY:
4665 signal_num = MOTION_NOTIFY_EVENT;
4668 signal_num = DELETE_EVENT;
4671 signal_num = DESTROY_EVENT;
4672 _gtk_tooltip_hide (widget);
4675 signal_num = KEY_PRESS_EVENT;
4677 case GDK_KEY_RELEASE:
4678 signal_num = KEY_RELEASE_EVENT;
4680 case GDK_ENTER_NOTIFY:
4681 signal_num = ENTER_NOTIFY_EVENT;
4683 case GDK_LEAVE_NOTIFY:
4684 signal_num = LEAVE_NOTIFY_EVENT;
4686 case GDK_FOCUS_CHANGE:
4687 signal_num = event->focus_change.in ? FOCUS_IN_EVENT : FOCUS_OUT_EVENT;
4688 if (event->focus_change.in)
4689 _gtk_tooltip_focus_in (widget);
4691 _gtk_tooltip_focus_out (widget);
4694 signal_num = CONFIGURE_EVENT;
4697 signal_num = MAP_EVENT;
4700 signal_num = UNMAP_EVENT;
4702 case GDK_WINDOW_STATE:
4703 signal_num = WINDOW_STATE_EVENT;
4705 case GDK_PROPERTY_NOTIFY:
4706 signal_num = PROPERTY_NOTIFY_EVENT;
4708 case GDK_SELECTION_CLEAR:
4709 signal_num = SELECTION_CLEAR_EVENT;
4711 case GDK_SELECTION_REQUEST:
4712 signal_num = SELECTION_REQUEST_EVENT;
4714 case GDK_SELECTION_NOTIFY:
4715 signal_num = SELECTION_NOTIFY_EVENT;
4717 case GDK_PROXIMITY_IN:
4718 signal_num = PROXIMITY_IN_EVENT;
4720 case GDK_PROXIMITY_OUT:
4721 signal_num = PROXIMITY_OUT_EVENT;
4724 signal_num = NO_EXPOSE_EVENT;
4726 case GDK_CLIENT_EVENT:
4727 signal_num = CLIENT_EVENT;
4730 signal_num = EXPOSE_EVENT;
4732 case GDK_VISIBILITY_NOTIFY:
4733 signal_num = VISIBILITY_NOTIFY_EVENT;
4735 case GDK_GRAB_BROKEN:
4736 signal_num = GRAB_BROKEN;
4739 signal_num = DAMAGE_EVENT;
4742 g_warning ("gtk_widget_event(): unhandled event type: %d", event->type);
4746 if (signal_num != -1)
4747 g_signal_emit (widget, widget_signals[signal_num], 0, event, &return_val);
4749 if (WIDGET_REALIZED_FOR_EVENT (widget, event))
4750 g_signal_emit (widget, widget_signals[EVENT_AFTER], 0, event);
4754 g_object_unref (widget);
4760 * gtk_widget_activate:
4761 * @widget: a #GtkWidget that's activatable
4763 * For widgets that can be "activated" (buttons, menu items, etc.)
4764 * this function activates them. Activation is what happens when you
4765 * press Enter on a widget during key navigation. If @widget isn't
4766 * activatable, the function returns %FALSE.
4768 * Return value: %TRUE if the widget was activatable
4771 gtk_widget_activate (GtkWidget *widget)
4773 g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
4775 if (WIDGET_CLASS (widget)->activate_signal)
4777 /* FIXME: we should eventually check the signals signature here */
4778 g_signal_emit (widget, WIDGET_CLASS (widget)->activate_signal, 0);
4787 * gtk_widget_set_scroll_adjustments:
4788 * @widget: a #GtkWidget
4789 * @hadjustment: an adjustment for horizontal scrolling, or %NULL
4790 * @vadjustment: an adjustment for vertical scrolling, or %NULL
4792 * For widgets that support scrolling, sets the scroll adjustments and
4793 * returns %TRUE. For widgets that don't support scrolling, does
4794 * nothing and returns %FALSE. Widgets that don't support scrolling
4795 * can be scrolled by placing them in a #GtkViewport, which does
4796 * support scrolling.
4798 * Return value: %TRUE if the widget supports scrolling
4801 gtk_widget_set_scroll_adjustments (GtkWidget *widget,
4802 GtkAdjustment *hadjustment,
4803 GtkAdjustment *vadjustment)
4808 g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
4811 g_return_val_if_fail (GTK_IS_ADJUSTMENT (hadjustment), FALSE);
4813 g_return_val_if_fail (GTK_IS_ADJUSTMENT (vadjustment), FALSE);
4815 signal_id = WIDGET_CLASS (widget)->set_scroll_adjustments_signal;
4819 g_signal_query (signal_id, &query);
4820 if (!query.signal_id ||
4821 !g_type_is_a (query.itype, GTK_TYPE_WIDGET) ||
4822 query.return_type != G_TYPE_NONE ||
4823 query.n_params != 2 ||
4824 query.param_types[0] != GTK_TYPE_ADJUSTMENT ||
4825 query.param_types[1] != GTK_TYPE_ADJUSTMENT)
4827 g_warning (G_STRLOC ": signal \"%s::%s\" has wrong signature",
4828 G_OBJECT_TYPE_NAME (widget), query.signal_name);
4832 g_signal_emit (widget, signal_id, 0, hadjustment, vadjustment);
4837 gtk_widget_reparent_subwindows (GtkWidget *widget,
4838 GdkWindow *new_window)
4840 if (GTK_WIDGET_NO_WINDOW (widget))
4842 GList *children = gdk_window_get_children (widget->window);
4845 for (tmp_list = children; tmp_list; tmp_list = tmp_list->next)
4847 GdkWindow *window = tmp_list->data;
4850 gdk_window_get_user_data (window, &child);
4851 while (child && child != widget)
4852 child = ((GtkWidget*) child)->parent;
4855 gdk_window_reparent (window, new_window, 0, 0);
4858 g_list_free (children);
4863 GList *tmp_list, *children;
4865 parent = gdk_window_get_parent (widget->window);
4868 gdk_window_reparent (widget->window, new_window, 0, 0);
4871 children = gdk_window_get_children (parent);
4873 for (tmp_list = children; tmp_list; tmp_list = tmp_list->next)
4875 GdkWindow *window = tmp_list->data;
4878 gdk_window_get_user_data (window, &child);
4880 if (child == widget)
4881 gdk_window_reparent (window, new_window, 0, 0);
4884 g_list_free (children);
4890 gtk_widget_reparent_fixup_child (GtkWidget *widget,
4891 gpointer client_data)
4893 g_assert (client_data != NULL);
4895 if (GTK_WIDGET_NO_WINDOW (widget))
4898 g_object_unref (widget->window);
4899 widget->window = (GdkWindow*) client_data;
4901 g_object_ref (widget->window);
4903 if (GTK_IS_CONTAINER (widget))
4904 gtk_container_forall (GTK_CONTAINER (widget),
4905 gtk_widget_reparent_fixup_child,
4911 * gtk_widget_reparent:
4912 * @widget: a #GtkWidget
4913 * @new_parent: a #GtkContainer to move the widget into
4915 * Moves a widget from one #GtkContainer to another, handling reference
4916 * count issues to avoid destroying the widget.
4919 gtk_widget_reparent (GtkWidget *widget,
4920 GtkWidget *new_parent)
4922 g_return_if_fail (GTK_IS_WIDGET (widget));
4923 g_return_if_fail (GTK_IS_CONTAINER (new_parent));
4924 g_return_if_fail (widget->parent != NULL);
4926 if (widget->parent != new_parent)
4928 /* First try to see if we can get away without unrealizing
4929 * the widget as we reparent it. if so we set a flag so
4930 * that gtk_widget_unparent doesn't unrealize widget
4932 if (GTK_WIDGET_REALIZED (widget) && GTK_WIDGET_REALIZED (new_parent))
4933 GTK_PRIVATE_SET_FLAG (widget, GTK_IN_REPARENT);
4935 g_object_ref (widget);
4936 gtk_container_remove (GTK_CONTAINER (widget->parent), widget);
4937 gtk_container_add (GTK_CONTAINER (new_parent), widget);
4938 g_object_unref (widget);
4940 if (GTK_WIDGET_IN_REPARENT (widget))
4942 GTK_PRIVATE_UNSET_FLAG (widget, GTK_IN_REPARENT);
4944 gtk_widget_reparent_subwindows (widget, gtk_widget_get_parent_window (widget));
4945 gtk_widget_reparent_fixup_child (widget,
4946 gtk_widget_get_parent_window (widget));
4949 g_object_notify (G_OBJECT (widget), "parent");
4954 * gtk_widget_intersect:
4955 * @widget: a #GtkWidget
4956 * @area: a rectangle
4957 * @intersection: rectangle to store intersection of @widget and @area
4959 * Computes the intersection of a @widget's area and @area, storing
4960 * the intersection in @intersection, and returns %TRUE if there was
4961 * an intersection. @intersection may be %NULL if you're only
4962 * interested in whether there was an intersection.
4964 * Return value: %TRUE if there was an intersection
4967 gtk_widget_intersect (GtkWidget *widget,
4968 const GdkRectangle *area,
4969 GdkRectangle *intersection)
4975 g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
4976 g_return_val_if_fail (area != NULL, FALSE);
4979 dest = intersection;
4983 return_val = gdk_rectangle_intersect (&widget->allocation, area, dest);
4985 if (return_val && intersection && !GTK_WIDGET_NO_WINDOW (widget))
4987 intersection->x -= widget->allocation.x;
4988 intersection->y -= widget->allocation.y;
4995 * gtk_widget_region_intersect:
4996 * @widget: a #GtkWidget
4997 * @region: a #GdkRegion, in the same coordinate system as
4998 * @widget->allocation. That is, relative to @widget->window
4999 * for %NO_WINDOW widgets; relative to the parent window
5000 * of @widget->window for widgets with their own window.
5001 * @returns: A newly allocated region holding the intersection of @widget
5002 * and @region. The coordinates of the return value are
5003 * relative to @widget->window for %NO_WINDOW widgets, and
5004 * relative to the parent window of @widget->window for
5005 * widgets with their own window.
5007 * Computes the intersection of a @widget's area and @region, returning
5008 * the intersection. The result may be empty, use gdk_region_empty() to
5012 gtk_widget_region_intersect (GtkWidget *widget,
5013 const GdkRegion *region)
5018 g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
5019 g_return_val_if_fail (region != NULL, NULL);
5021 gtk_widget_get_draw_rectangle (widget, &rect);
5023 dest = gdk_region_rectangle (&rect);
5025 gdk_region_intersect (dest, region);
5031 * _gtk_widget_grab_notify:
5032 * @widget: a #GtkWidget
5033 * @was_grabbed: whether a grab is now in effect
5035 * Emits the #GtkWidget::grab-notify signal on @widget.
5040 _gtk_widget_grab_notify (GtkWidget *widget,
5041 gboolean was_grabbed)
5043 g_signal_emit (widget, widget_signals[GRAB_NOTIFY], 0, was_grabbed);
5047 * gtk_widget_grab_focus:
5048 * @widget: a #GtkWidget
5050 * Causes @widget to have the keyboard focus for the #GtkWindow it's
5051 * inside. @widget must be a focusable widget, such as a #GtkEntry;
5052 * something like #GtkFrame won't work. (More precisely, it must have the
5053 * %GTK_CAN_FOCUS flag set.)
5056 gtk_widget_grab_focus (GtkWidget *widget)
5058 g_return_if_fail (GTK_IS_WIDGET (widget));
5060 if (!GTK_WIDGET_IS_SENSITIVE (widget))
5063 g_object_ref (widget);
5064 g_signal_emit (widget, widget_signals[GRAB_FOCUS], 0);
5065 g_object_notify (G_OBJECT (widget), "has-focus");
5066 g_object_unref (widget);
5070 reset_focus_recurse (GtkWidget *widget,
5073 if (GTK_IS_CONTAINER (widget))
5075 GtkContainer *container;
5077 container = GTK_CONTAINER (widget);
5078 gtk_container_set_focus_child (container, NULL);
5080 gtk_container_foreach (container,
5081 reset_focus_recurse,
5087 gtk_widget_real_grab_focus (GtkWidget *focus_widget)
5089 if (GTK_WIDGET_CAN_FOCUS (focus_widget))
5091 GtkWidget *toplevel;
5094 /* clear the current focus setting, break if the current widget
5095 * is the focus widget's parent, since containers above that will
5096 * be set by the next loop.
5098 toplevel = gtk_widget_get_toplevel (focus_widget);
5099 if (GTK_WIDGET_TOPLEVEL (toplevel) && GTK_IS_WINDOW (toplevel))
5101 widget = GTK_WINDOW (toplevel)->focus_widget;
5103 if (widget == focus_widget)
5105 /* We call _gtk_window_internal_set_focus() here so that the
5106 * toplevel window can request the focus if necessary.
5107 * This is needed when the toplevel is a GtkPlug
5109 if (!GTK_WIDGET_HAS_FOCUS (widget))
5110 _gtk_window_internal_set_focus (GTK_WINDOW (toplevel), focus_widget);
5117 while (widget->parent && widget->parent != focus_widget->parent)
5119 widget = widget->parent;
5120 gtk_container_set_focus_child (GTK_CONTAINER (widget), NULL);
5124 else if (toplevel != focus_widget)
5126 /* gtk_widget_grab_focus() operates on a tree without window...
5127 * actually, this is very questionable behaviour.
5130 gtk_container_foreach (GTK_CONTAINER (toplevel),
5131 reset_focus_recurse,
5135 /* now propagate the new focus up the widget tree and finally
5136 * set it on the window
5138 widget = focus_widget;
5139 while (widget->parent)
5141 gtk_container_set_focus_child (GTK_CONTAINER (widget->parent), widget);
5142 widget = widget->parent;
5144 if (GTK_IS_WINDOW (widget))
5145 _gtk_window_internal_set_focus (GTK_WINDOW (widget), focus_widget);
5150 gtk_widget_real_query_tooltip (GtkWidget *widget,
5153 gboolean keyboard_tip,
5154 GtkTooltip *tooltip)
5156 gchar *tooltip_markup;
5157 gboolean has_tooltip;
5159 tooltip_markup = g_object_get_qdata (G_OBJECT (widget), quark_tooltip_markup);
5160 has_tooltip = GPOINTER_TO_UINT (g_object_get_qdata (G_OBJECT (widget), quark_has_tooltip));
5162 if (has_tooltip && tooltip_markup)
5164 gtk_tooltip_set_markup (tooltip, tooltip_markup);
5172 gtk_widget_real_show_help (GtkWidget *widget,
5173 GtkWidgetHelpType help_type)
5175 if (help_type == GTK_WIDGET_HELP_TOOLTIP)
5177 _gtk_tooltip_toggle_keyboard_mode (widget);
5186 gtk_widget_real_focus (GtkWidget *widget,
5187 GtkDirectionType direction)
5189 if (!GTK_WIDGET_CAN_FOCUS (widget))
5192 if (!gtk_widget_is_focus (widget))
5194 gtk_widget_grab_focus (widget);
5202 gtk_widget_real_move_focus (GtkWidget *widget,
5203 GtkDirectionType direction)
5205 GtkWidget *toplevel = gtk_widget_get_toplevel (widget);
5207 if (GTK_IS_WINDOW (toplevel) &&
5208 GTK_WINDOW_GET_CLASS (toplevel)->move_focus)
5210 GTK_WINDOW_GET_CLASS (toplevel)->move_focus (GTK_WINDOW (toplevel),
5216 gtk_widget_real_keynav_failed (GtkWidget *widget,
5217 GtkDirectionType direction)
5219 gboolean cursor_only;
5223 case GTK_DIR_TAB_FORWARD:
5224 case GTK_DIR_TAB_BACKWARD:
5231 g_object_get (gtk_widget_get_settings (widget),
5232 "gtk-keynav-cursor-only", &cursor_only,
5239 gtk_widget_error_bell (widget);
5245 * gtk_widget_is_focus:
5246 * @widget: a #GtkWidget
5248 * Determines if the widget is the focus widget within its
5249 * toplevel. (This does not mean that the %HAS_FOCUS flag is
5250 * necessarily set; %HAS_FOCUS will only be set if the
5251 * toplevel widget additionally has the global input focus.)
5253 * Return value: %TRUE if the widget is the focus widget.
5256 gtk_widget_is_focus (GtkWidget *widget)
5258 GtkWidget *toplevel;
5260 g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
5262 toplevel = gtk_widget_get_toplevel (widget);
5264 if (GTK_IS_WINDOW (toplevel))
5265 return widget == GTK_WINDOW (toplevel)->focus_widget;
5271 * gtk_widget_grab_default:
5272 * @widget: a #GtkWidget
5274 * Causes @widget to become the default widget. @widget must have the
5275 * %GTK_CAN_DEFAULT flag set; typically you have to set this flag
5276 * yourself by calling <literal>GTK_WIDGET_SET_FLAGS (@widget,
5277 * GTK_CAN_DEFAULT)</literal>. The default widget is activated when
5278 * the user presses Enter in a window. Default widgets must be
5279 * activatable, that is, gtk_widget_activate() should affect them.
5282 gtk_widget_grab_default (GtkWidget *widget)
5286 g_return_if_fail (GTK_IS_WIDGET (widget));
5287 g_return_if_fail (GTK_WIDGET_CAN_DEFAULT (widget));
5289 window = gtk_widget_get_toplevel (widget);
5291 if (window && GTK_WIDGET_TOPLEVEL (window))
5292 gtk_window_set_default (GTK_WINDOW (window), widget);
5294 g_warning (G_STRLOC ": widget not within a GtkWindow");
5298 * gtk_widget_set_name:
5299 * @widget: a #GtkWidget
5300 * @name: name for the widget
5302 * Widgets can be named, which allows you to refer to them from a
5303 * gtkrc file. You can apply a style to widgets with a particular name
5304 * in the gtkrc file. See the documentation for gtkrc files (on the
5305 * same page as the docs for #GtkRcStyle).
5307 * Note that widget names are separated by periods in paths (see
5308 * gtk_widget_path()), so names with embedded periods may cause confusion.
5311 gtk_widget_set_name (GtkWidget *widget,
5316 g_return_if_fail (GTK_IS_WIDGET (widget));
5318 new_name = g_strdup (name);
5319 g_free (widget->name);
5320 widget->name = new_name;
5322 if (GTK_WIDGET_RC_STYLE (widget))
5323 gtk_widget_reset_rc_style (widget);
5325 g_object_notify (G_OBJECT (widget), "name");
5329 * gtk_widget_get_name:
5330 * @widget: a #GtkWidget
5332 * Retrieves the name of a widget. See gtk_widget_set_name() for the
5333 * significance of widget names.
5335 * Return value: name of the widget. This string is owned by GTK+ and
5336 * should not be modified or freed
5338 G_CONST_RETURN gchar*
5339 gtk_widget_get_name (GtkWidget *widget)
5341 g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
5344 return widget->name;
5345 return g_type_name (GTK_WIDGET_TYPE (widget));
5349 * gtk_widget_set_state:
5350 * @widget: a #GtkWidget
5351 * @state: new state for @widget
5353 * This function is for use in widget implementations. Sets the state
5354 * of a widget (insensitive, prelighted, etc.) Usually you should set
5355 * the state using wrapper functions such as gtk_widget_set_sensitive().
5358 gtk_widget_set_state (GtkWidget *widget,
5361 g_return_if_fail (GTK_IS_WIDGET (widget));
5363 if (state == GTK_WIDGET_STATE (widget))
5366 if (state == GTK_STATE_INSENSITIVE)
5367 gtk_widget_set_sensitive (widget, FALSE);
5373 data.state_restoration = FALSE;
5374 data.use_forall = FALSE;
5376 data.parent_sensitive = (GTK_WIDGET_IS_SENSITIVE (widget->parent) != FALSE);
5378 data.parent_sensitive = TRUE;
5380 gtk_widget_propagate_state (widget, &data);
5382 if (GTK_WIDGET_DRAWABLE (widget))
5383 gtk_widget_queue_draw (widget);
5389 * gtk_widget_set_app_paintable:
5390 * @widget: a #GtkWidget
5391 * @app_paintable: %TRUE if the application will paint on the widget
5393 * Sets whether the application intends to draw on the widget in
5394 * an #GtkWidget::expose-event handler.
5396 * This is a hint to the widget and does not affect the behavior of
5397 * the GTK+ core; many widgets ignore this flag entirely. For widgets
5398 * that do pay attention to the flag, such as #GtkEventBox and #GtkWindow,
5399 * the effect is to suppress default themed drawing of the widget's
5400 * background. (Children of the widget will still be drawn.) The application
5401 * is then entirely responsible for drawing the widget background.
5403 * Note that the background is still drawn when the widget is mapped.
5404 * If this is not suitable (e.g. because you want to make a transparent
5405 * window using an RGBA visual), you can work around this by doing:
5407 * gtk_widget_realize (window);
5408 * gdk_window_set_back_pixmap (window->window, NULL, FALSE);
5409 * gtk_widget_show (window);
5413 gtk_widget_set_app_paintable (GtkWidget *widget,
5414 gboolean app_paintable)
5416 g_return_if_fail (GTK_IS_WIDGET (widget));
5418 app_paintable = (app_paintable != FALSE);
5420 if (GTK_WIDGET_APP_PAINTABLE (widget) != app_paintable)
5423 GTK_WIDGET_SET_FLAGS (widget, GTK_APP_PAINTABLE);
5425 GTK_WIDGET_UNSET_FLAGS (widget, GTK_APP_PAINTABLE);
5427 if (GTK_WIDGET_DRAWABLE (widget))
5428 gtk_widget_queue_draw (widget);
5430 g_object_notify (G_OBJECT (widget), "app-paintable");
5435 * gtk_widget_set_double_buffered:
5436 * @widget: a #GtkWidget
5437 * @double_buffered: %TRUE to double-buffer a widget
5439 * Widgets are double buffered by default; you can use this function
5440 * to turn off the buffering. "Double buffered" simply means that
5441 * gdk_window_begin_paint_region() and gdk_window_end_paint() are called
5442 * automatically around expose events sent to the
5443 * widget. gdk_window_begin_paint() diverts all drawing to a widget's
5444 * window to an offscreen buffer, and gdk_window_end_paint() draws the
5445 * buffer to the screen. The result is that users see the window
5446 * update in one smooth step, and don't see individual graphics
5447 * primitives being rendered.
5449 * In very simple terms, double buffered widgets don't flicker,
5450 * so you would only use this function to turn off double buffering
5451 * if you had special needs and really knew what you were doing.
5453 * Note: if you turn off double-buffering, you have to handle
5454 * expose events, since even the clearing to the background color or
5455 * pixmap will not happen automatically (as it is done in
5456 * gdk_window_begin_paint()).
5459 gtk_widget_set_double_buffered (GtkWidget *widget,
5460 gboolean double_buffered)
5462 g_return_if_fail (GTK_IS_WIDGET (widget));
5464 if (double_buffered)
5465 GTK_WIDGET_SET_FLAGS (widget, GTK_DOUBLE_BUFFERED);
5467 GTK_WIDGET_UNSET_FLAGS (widget, GTK_DOUBLE_BUFFERED);
5471 * gtk_widget_set_redraw_on_allocate:
5472 * @widget: a #GtkWidget
5473 * @redraw_on_allocate: if %TRUE, the entire widget will be redrawn
5474 * when it is allocated to a new size. Otherwise, only the
5475 * new portion of the widget will be redrawn.
5477 * Sets whether the entire widget is queued for drawing when its size
5478 * allocation changes. By default, this setting is %TRUE and
5479 * the entire widget is redrawn on every size change. If your widget
5480 * leaves the upper left unchanged when made bigger, turning this
5481 * setting off will improve performance.
5483 * Note that for %NO_WINDOW widgets setting this flag to %FALSE turns
5484 * off all allocation on resizing: the widget will not even redraw if
5485 * its position changes; this is to allow containers that don't draw
5486 * anything to avoid excess invalidations. If you set this flag on a
5487 * %NO_WINDOW widget that <emphasis>does</emphasis> draw on @widget->window,
5488 * you are responsible for invalidating both the old and new allocation
5489 * of the widget when the widget is moved and responsible for invalidating
5490 * regions newly when the widget increases size.
5493 gtk_widget_set_redraw_on_allocate (GtkWidget *widget,
5494 gboolean redraw_on_allocate)
5496 g_return_if_fail (GTK_IS_WIDGET (widget));
5498 if (redraw_on_allocate)
5499 GTK_PRIVATE_SET_FLAG (widget, GTK_REDRAW_ON_ALLOC);
5501 GTK_PRIVATE_UNSET_FLAG (widget, GTK_REDRAW_ON_ALLOC);
5505 * gtk_widget_set_sensitive:
5506 * @widget: a #GtkWidget
5507 * @sensitive: %TRUE to make the widget sensitive
5509 * Sets the sensitivity of a widget. A widget is sensitive if the user
5510 * can interact with it. Insensitive widgets are "grayed out" and the
5511 * user can't interact with them. Insensitive widgets are known as
5512 * "inactive", "disabled", or "ghosted" in some other toolkits.
5515 gtk_widget_set_sensitive (GtkWidget *widget,
5520 g_return_if_fail (GTK_IS_WIDGET (widget));
5522 sensitive = (sensitive != FALSE);
5524 if (sensitive == (GTK_WIDGET_SENSITIVE (widget) != FALSE))
5529 GTK_WIDGET_SET_FLAGS (widget, GTK_SENSITIVE);
5530 data.state = GTK_WIDGET_SAVED_STATE (widget);
5534 GTK_WIDGET_UNSET_FLAGS (widget, GTK_SENSITIVE);
5535 data.state = GTK_WIDGET_STATE (widget);
5537 data.state_restoration = TRUE;
5538 data.use_forall = TRUE;
5541 data.parent_sensitive = (GTK_WIDGET_IS_SENSITIVE (widget->parent) != FALSE);
5543 data.parent_sensitive = TRUE;
5545 gtk_widget_propagate_state (widget, &data);
5546 if (GTK_WIDGET_DRAWABLE (widget))
5547 gtk_widget_queue_draw (widget);
5549 g_object_notify (G_OBJECT (widget), "sensitive");
5553 * gtk_widget_set_parent:
5554 * @widget: a #GtkWidget
5555 * @parent: parent container
5557 * This function is useful only when implementing subclasses of
5559 * Sets the container as the parent of @widget, and takes care of
5560 * some details such as updating the state and style of the child
5561 * to reflect its new location. The opposite function is
5562 * gtk_widget_unparent().
5565 gtk_widget_set_parent (GtkWidget *widget,
5570 g_return_if_fail (GTK_IS_WIDGET (widget));
5571 g_return_if_fail (GTK_IS_WIDGET (parent));
5572 g_return_if_fail (widget != parent);
5573 if (widget->parent != NULL)
5575 g_warning ("Can't set a parent on widget which has a parent\n");
5578 if (GTK_WIDGET_TOPLEVEL (widget))
5580 g_warning ("Can't set a parent on a toplevel widget\n");
5584 /* keep this function in sync with gtk_menu_attach_to_widget()
5587 g_object_ref_sink (widget);
5588 widget->parent = parent;
5590 if (GTK_WIDGET_STATE (parent) != GTK_STATE_NORMAL)
5591 data.state = GTK_WIDGET_STATE (parent);
5593 data.state = GTK_WIDGET_STATE (widget);
5594 data.state_restoration = FALSE;
5595 data.parent_sensitive = (GTK_WIDGET_IS_SENSITIVE (parent) != FALSE);
5596 data.use_forall = GTK_WIDGET_IS_SENSITIVE (parent) != GTK_WIDGET_IS_SENSITIVE (widget);
5598 gtk_widget_propagate_state (widget, &data);
5600 gtk_widget_reset_rc_styles (widget);
5602 g_signal_emit (widget, widget_signals[PARENT_SET], 0, NULL);
5603 if (GTK_WIDGET_ANCHORED (widget->parent))
5604 _gtk_widget_propagate_hierarchy_changed (widget, NULL);
5605 g_object_notify (G_OBJECT (widget), "parent");
5607 /* Enforce realized/mapped invariants
5609 if (GTK_WIDGET_REALIZED (widget->parent))
5610 gtk_widget_realize (widget);
5612 if (GTK_WIDGET_VISIBLE (widget->parent) &&
5613 GTK_WIDGET_VISIBLE (widget))
5615 if (GTK_WIDGET_CHILD_VISIBLE (widget) &&
5616 GTK_WIDGET_MAPPED (widget->parent))
5617 gtk_widget_map (widget);
5619 gtk_widget_queue_resize (widget);
5624 * gtk_widget_get_parent:
5625 * @widget: a #GtkWidget
5627 * Returns the parent container of @widget.
5629 * Return value: the parent container of @widget, or %NULL
5632 gtk_widget_get_parent (GtkWidget *widget)
5634 g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
5636 return widget->parent;
5639 /*****************************************
5641 * see docs/styles.txt
5642 *****************************************/
5645 * gtk_widget_set_style:
5646 * @widget: a #GtkWidget
5647 * @style: a #GtkStyle, or %NULL to remove the effect of a previous
5648 * gtk_widget_set_style() and go back to the default style
5650 * Sets the #GtkStyle for a widget (@widget->style). You probably don't
5651 * want to use this function; it interacts badly with themes, because
5652 * themes work by replacing the #GtkStyle. Instead, use
5653 * gtk_widget_modify_style().
5656 gtk_widget_set_style (GtkWidget *widget,
5659 g_return_if_fail (GTK_IS_WIDGET (widget));
5663 gboolean initial_emission;
5665 initial_emission = !GTK_WIDGET_RC_STYLE (widget) && !GTK_WIDGET_USER_STYLE (widget);
5667 GTK_WIDGET_UNSET_FLAGS (widget, GTK_RC_STYLE);
5668 GTK_PRIVATE_SET_FLAG (widget, GTK_USER_STYLE);
5670 gtk_widget_set_style_internal (widget, style, initial_emission);
5674 if (GTK_WIDGET_USER_STYLE (widget))
5675 gtk_widget_reset_rc_style (widget);
5680 * gtk_widget_ensure_style:
5681 * @widget: a #GtkWidget
5683 * Ensures that @widget has a style (@widget->style). Not a very useful
5684 * function; most of the time, if you want the style, the widget is
5685 * realized, and realized widgets are guaranteed to have a style
5689 gtk_widget_ensure_style (GtkWidget *widget)
5691 g_return_if_fail (GTK_IS_WIDGET (widget));
5693 if (!GTK_WIDGET_USER_STYLE (widget) &&
5694 !GTK_WIDGET_RC_STYLE (widget))
5695 gtk_widget_reset_rc_style (widget);
5698 /* Look up the RC style for this widget, unsetting any user style that
5699 * may be in effect currently
5702 gtk_widget_reset_rc_style (GtkWidget *widget)
5704 GtkStyle *new_style = NULL;
5705 gboolean initial_emission;
5707 initial_emission = !GTK_WIDGET_RC_STYLE (widget) && !GTK_WIDGET_USER_STYLE (widget);
5709 GTK_PRIVATE_UNSET_FLAG (widget, GTK_USER_STYLE);
5710 GTK_WIDGET_SET_FLAGS (widget, GTK_RC_STYLE);
5712 if (gtk_widget_has_screen (widget))
5713 new_style = gtk_rc_get_style (widget);
5715 new_style = gtk_widget_get_default_style ();
5717 if (initial_emission || new_style != widget->style)
5718 gtk_widget_set_style_internal (widget, new_style, initial_emission);
5722 * gtk_widget_get_style:
5723 * @widget: a #GtkWidget
5725 * Simply an accessor function that returns @widget->style.
5727 * Return value: the widget's #GtkStyle
5730 gtk_widget_get_style (GtkWidget *widget)
5732 g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
5734 return widget->style;
5738 * gtk_widget_modify_style:
5739 * @widget: a #GtkWidget
5740 * @style: the #GtkRcStyle holding the style modifications
5742 * Modifies style values on the widget. Modifications made using this
5743 * technique take precedence over style values set via an RC file,
5744 * however, they will be overriden if a style is explicitely set on
5745 * the widget using gtk_widget_set_style(). The #GtkRcStyle structure
5746 * is designed so each field can either be set or unset, so it is
5747 * possible, using this function, to modify some style values and
5748 * leave the others unchanged.
5750 * Note that modifications made with this function are not cumulative
5751 * with previous calls to gtk_widget_modify_style() or with such
5752 * functions as gtk_widget_modify_fg(). If you wish to retain
5753 * previous values, you must first call gtk_widget_get_modifier_style(),
5754 * make your modifications to the returned style, then call
5755 * gtk_widget_modify_style() with that style. On the other hand,
5756 * if you first call gtk_widget_modify_style(), subsequent calls
5757 * to such functions gtk_widget_modify_fg() will have a cumulative
5758 * effect with the initial modifications.
5761 gtk_widget_modify_style (GtkWidget *widget,
5764 g_return_if_fail (GTK_IS_WIDGET (widget));
5765 g_return_if_fail (GTK_IS_RC_STYLE (style));
5767 g_object_set_qdata_full (G_OBJECT (widget),
5769 gtk_rc_style_copy (style),
5770 (GDestroyNotify) g_object_unref);
5772 /* note that "style" may be invalid here if it was the old
5773 * modifier style and the only reference was our own.
5776 if (GTK_WIDGET_RC_STYLE (widget))
5777 gtk_widget_reset_rc_style (widget);
5781 * gtk_widget_get_modifier_style:
5782 * @widget: a #GtkWidget
5784 * Returns the current modifier style for the widget. (As set by
5785 * gtk_widget_modify_style().) If no style has previously set, a new
5786 * #GtkRcStyle will be created with all values unset, and set as the
5787 * modifier style for the widget. If you make changes to this rc
5788 * style, you must call gtk_widget_modify_style(), passing in the
5789 * returned rc style, to make sure that your changes take effect.
5791 * Caution: passing the style back to gtk_widget_modify_style() will
5792 * normally end up destroying it, because gtk_widget_modify_style() copies
5793 * the passed-in style and sets the copy as the new modifier style,
5794 * thus dropping any reference to the old modifier style. Add a reference
5795 * to the modifier style if you want to keep it alive.
5797 * Return value: the modifier style for the widget. This rc style is
5798 * owned by the widget. If you want to keep a pointer to value this
5799 * around, you must add a refcount using g_object_ref().
5802 gtk_widget_get_modifier_style (GtkWidget *widget)
5804 GtkRcStyle *rc_style;
5806 g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
5808 rc_style = g_object_get_qdata (G_OBJECT (widget), quark_rc_style);
5812 rc_style = gtk_rc_style_new ();
5813 g_object_set_qdata_full (G_OBJECT (widget),
5816 (GDestroyNotify) g_object_unref);
5823 gtk_widget_modify_color_component (GtkWidget *widget,
5824 GtkRcFlags component,
5826 const GdkColor *color)
5828 GtkRcStyle *rc_style = gtk_widget_get_modifier_style (widget);
5835 rc_style->fg[state] = *color;
5838 rc_style->bg[state] = *color;
5841 rc_style->text[state] = *color;
5844 rc_style->base[state] = *color;
5847 g_assert_not_reached();
5850 rc_style->color_flags[state] |= component;
5853 rc_style->color_flags[state] &= ~component;
5855 gtk_widget_modify_style (widget, rc_style);
5859 * gtk_widget_modify_fg:
5860 * @widget: a #GtkWidget
5861 * @state: the state for which to set the foreground color
5862 * @color: the color to assign (does not need to be allocated),
5863 * or %NULL to undo the effect of previous calls to
5864 * of gtk_widget_modify_fg().
5866 * Sets the foreground color for a widget in a particular state.
5867 * All other style values are left untouched. See also
5868 * gtk_widget_modify_style().
5871 gtk_widget_modify_fg (GtkWidget *widget,
5873 const GdkColor *color)
5875 g_return_if_fail (GTK_IS_WIDGET (widget));
5876 g_return_if_fail (state >= GTK_STATE_NORMAL && state <= GTK_STATE_INSENSITIVE);
5878 gtk_widget_modify_color_component (widget, GTK_RC_FG, state, color);
5882 * gtk_widget_modify_bg:
5883 * @widget: a #GtkWidget
5884 * @state: the state for which to set the background color
5885 * @color: the color to assign (does not need to be allocated),
5886 * or %NULL to undo the effect of previous calls to
5887 * of gtk_widget_modify_bg().
5889 * Sets the background color for a widget in a particular state.
5890 * All other style values are left untouched. See also
5891 * gtk_widget_modify_style().
5893 * Note that "no window" widgets (which have the %GTK_NO_WINDOW flag set)
5894 * draw on their parent container's window and thus may not draw any
5895 * background themselves. This is the case for e.g. #GtkLabel. To modify
5896 * the background of such widgets, you have to set the background color
5897 * on their parent; if you want to set the background of a rectangular
5898 * area around a label, try placing the label in a #GtkEventBox widget
5899 * and setting the background color on that.
5902 gtk_widget_modify_bg (GtkWidget *widget,
5904 const GdkColor *color)
5906 g_return_if_fail (GTK_IS_WIDGET (widget));
5907 g_return_if_fail (state >= GTK_STATE_NORMAL && state <= GTK_STATE_INSENSITIVE);
5909 gtk_widget_modify_color_component (widget, GTK_RC_BG, state, color);
5913 * gtk_widget_modify_text:
5914 * @widget: a #GtkWidget
5915 * @state: the state for which to set the text color
5916 * @color: the color to assign (does not need to be allocated),
5917 * or %NULL to undo the effect of previous calls to
5918 * of gtk_widget_modify_text().
5920 * Sets the text color for a widget in a particular state. All other
5921 * style values are left untouched. The text color is the foreground
5922 * color used along with the base color (see gtk_widget_modify_base())
5923 * for widgets such as #GtkEntry and #GtkTextView. See also
5924 * gtk_widget_modify_style().
5927 gtk_widget_modify_text (GtkWidget *widget,
5929 const GdkColor *color)
5931 g_return_if_fail (GTK_IS_WIDGET (widget));
5932 g_return_if_fail (state >= GTK_STATE_NORMAL && state <= GTK_STATE_INSENSITIVE);
5934 gtk_widget_modify_color_component (widget, GTK_RC_TEXT, state, color);
5938 * gtk_widget_modify_base:
5939 * @widget: a #GtkWidget
5940 * @state: the state for which to set the base color
5941 * @color: the color to assign (does not need to be allocated),
5942 * or %NULL to undo the effect of previous calls to
5943 * of gtk_widget_modify_base().
5945 * Sets the base color for a widget in a particular state.
5946 * All other style values are left untouched. The base color
5947 * is the background color used along with the text color
5948 * (see gtk_widget_modify_text()) for widgets such as #GtkEntry
5949 * and #GtkTextView. See also gtk_widget_modify_style().
5951 * Note that "no window" widgets (which have the %GTK_NO_WINDOW flag set)
5952 * draw on their parent container's window and thus may not draw any
5953 * background themselves. This is the case for e.g. #GtkLabel. To modify
5954 * the background of such widgets, you have to set the base color on their
5955 * parent; if you want to set the background of a rectangular area around
5956 * a label, try placing the label in a #GtkEventBox widget and setting
5957 * the base color on that.
5960 gtk_widget_modify_base (GtkWidget *widget,
5962 const GdkColor *color)
5964 g_return_if_fail (GTK_IS_WIDGET (widget));
5965 g_return_if_fail (state >= GTK_STATE_NORMAL && state <= GTK_STATE_INSENSITIVE);
5967 gtk_widget_modify_color_component (widget, GTK_RC_BASE, state, color);
5971 modify_color_property (GtkWidget *widget,
5972 GtkRcStyle *rc_style,
5974 const GdkColor *color)
5976 GQuark type_name = g_type_qname (G_OBJECT_TYPE (widget));
5977 GQuark property_name = g_quark_from_string (name);
5981 GtkRcProperty rc_property = {0};
5984 rc_property.type_name = type_name;
5985 rc_property.property_name = property_name;
5986 rc_property.origin = NULL;
5988 color_name = gdk_color_to_string (color);
5989 g_value_init (&rc_property.value, G_TYPE_STRING);
5990 g_value_take_string (&rc_property.value, color_name);
5992 _gtk_rc_style_set_rc_property (rc_style, &rc_property);
5994 g_value_unset (&rc_property.value);
5997 _gtk_rc_style_unset_rc_property (rc_style, type_name, property_name);
6001 * gtk_widget_modify_cursor:
6002 * @widget: a #GtkWidget
6003 * @primary: the color to use for primary cursor (does not need to be
6004 * allocated), or %NULL to undo the effect of previous calls to
6005 * of gtk_widget_modify_cursor().
6006 * @secondary: the color to use for secondary cursor (does not need to be
6007 * allocated), or %NULL to undo the effect of previous calls to
6008 * of gtk_widget_modify_cursor().
6010 * Sets the cursor color to use in a widget, overriding the
6011 * #GtkWidget:cursor-color and #GtkWidget:secondary-cursor-color
6012 * style properties. All other style values are left untouched.
6013 * See also gtk_widget_modify_style().
6018 gtk_widget_modify_cursor (GtkWidget *widget,
6019 const GdkColor *primary,
6020 const GdkColor *secondary)
6022 GtkRcStyle *rc_style;
6024 g_return_if_fail (GTK_IS_WIDGET (widget));
6026 rc_style = gtk_widget_get_modifier_style (widget);
6028 modify_color_property (widget, rc_style, "cursor-color", primary);
6029 modify_color_property (widget, rc_style, "secondary-cursor-color", secondary);
6031 gtk_widget_modify_style (widget, rc_style);
6035 * gtk_widget_modify_font:
6036 * @widget: a #GtkWidget
6037 * @font_desc: the font description to use, or %NULL to undo
6038 * the effect of previous calls to gtk_widget_modify_font().
6040 * Sets the font to use for a widget. All other style values are left
6041 * untouched. See also gtk_widget_modify_style().
6044 gtk_widget_modify_font (GtkWidget *widget,
6045 PangoFontDescription *font_desc)
6047 GtkRcStyle *rc_style;
6049 g_return_if_fail (GTK_IS_WIDGET (widget));
6051 rc_style = gtk_widget_get_modifier_style (widget);
6053 if (rc_style->font_desc)
6054 pango_font_description_free (rc_style->font_desc);
6057 rc_style->font_desc = pango_font_description_copy (font_desc);
6059 rc_style->font_desc = NULL;
6061 gtk_widget_modify_style (widget, rc_style);
6065 gtk_widget_real_direction_changed (GtkWidget *widget,
6066 GtkTextDirection previous_direction)
6068 gtk_widget_queue_resize (widget);
6072 gtk_widget_real_style_set (GtkWidget *widget,
6073 GtkStyle *previous_style)
6075 if (GTK_WIDGET_REALIZED (widget) &&
6076 !GTK_WIDGET_NO_WINDOW (widget))
6077 gtk_style_set_background (widget->style, widget->window, widget->state);
6081 gtk_widget_set_style_internal (GtkWidget *widget,
6083 gboolean initial_emission)
6085 g_object_ref (widget);
6086 g_object_freeze_notify (G_OBJECT (widget));
6088 if (widget->style != style)
6090 GtkStyle *previous_style;
6092 if (GTK_WIDGET_REALIZED (widget))
6094 gtk_widget_reset_shapes (widget);
6095 gtk_style_detach (widget->style);
6098 previous_style = widget->style;
6099 widget->style = style;
6100 g_object_ref (widget->style);
6102 if (GTK_WIDGET_REALIZED (widget))
6103 widget->style = gtk_style_attach (widget->style, widget->window);
6105 gtk_widget_update_pango_context (widget);
6106 g_signal_emit (widget,
6107 widget_signals[STYLE_SET],
6109 initial_emission ? NULL : previous_style);
6110 g_object_unref (previous_style);
6112 if (GTK_WIDGET_ANCHORED (widget) && !initial_emission)
6113 gtk_widget_queue_resize (widget);
6115 else if (initial_emission)
6117 gtk_widget_update_pango_context (widget);
6118 g_signal_emit (widget,
6119 widget_signals[STYLE_SET],
6123 g_object_notify (G_OBJECT (widget), "style");
6124 g_object_thaw_notify (G_OBJECT (widget));
6125 g_object_unref (widget);
6129 GtkWidget *previous_toplevel;
6130 GdkScreen *previous_screen;
6131 GdkScreen *new_screen;
6132 } HierarchyChangedInfo;
6135 do_screen_change (GtkWidget *widget,
6136 GdkScreen *old_screen,
6137 GdkScreen *new_screen)
6139 if (old_screen != new_screen)
6143 PangoContext *context = g_object_get_qdata (G_OBJECT (widget), quark_pango_context);
6145 g_object_set_qdata (G_OBJECT (widget), quark_pango_context, NULL);
6148 _gtk_tooltip_hide (widget);
6149 g_signal_emit (widget, widget_signals[SCREEN_CHANGED], 0, old_screen);
6154 gtk_widget_propagate_hierarchy_changed_recurse (GtkWidget *widget,
6155 gpointer client_data)
6157 HierarchyChangedInfo *info = client_data;
6158 gboolean new_anchored = GTK_WIDGET_TOPLEVEL (widget) ||
6159 (widget->parent && GTK_WIDGET_ANCHORED (widget->parent));
6161 if (GTK_WIDGET_ANCHORED (widget) != new_anchored)
6163 g_object_ref (widget);
6166 GTK_PRIVATE_SET_FLAG (widget, GTK_ANCHORED);
6168 GTK_PRIVATE_UNSET_FLAG (widget, GTK_ANCHORED);
6170 g_signal_emit (widget, widget_signals[HIERARCHY_CHANGED], 0, info->previous_toplevel);
6171 do_screen_change (widget, info->previous_screen, info->new_screen);
6173 if (GTK_IS_CONTAINER (widget))
6174 gtk_container_forall (GTK_CONTAINER (widget),
6175 gtk_widget_propagate_hierarchy_changed_recurse,
6178 g_object_unref (widget);
6183 * _gtk_widget_propagate_hierarchy_changed:
6184 * @widget: a #GtkWidget
6185 * @previous_toplevel: Previous toplevel
6187 * Propagates changes in the anchored state to a widget and all
6188 * children, unsetting or setting the %ANCHORED flag, and
6189 * emitting #GtkWidget::hierarchy-changed.
6192 _gtk_widget_propagate_hierarchy_changed (GtkWidget *widget,
6193 GtkWidget *previous_toplevel)
6195 HierarchyChangedInfo info;
6197 info.previous_toplevel = previous_toplevel;
6198 info.previous_screen = previous_toplevel ? gtk_widget_get_screen (previous_toplevel) : NULL;
6200 if (GTK_WIDGET_TOPLEVEL (widget) ||
6201 (widget->parent && GTK_WIDGET_ANCHORED (widget->parent)))
6202 info.new_screen = gtk_widget_get_screen (widget);
6204 info.new_screen = NULL;
6206 if (info.previous_screen)
6207 g_object_ref (info.previous_screen);
6208 if (previous_toplevel)
6209 g_object_ref (previous_toplevel);
6211 gtk_widget_propagate_hierarchy_changed_recurse (widget, &info);
6213 if (previous_toplevel)
6214 g_object_unref (previous_toplevel);
6215 if (info.previous_screen)
6216 g_object_unref (info.previous_screen);
6220 gtk_widget_propagate_screen_changed_recurse (GtkWidget *widget,
6221 gpointer client_data)
6223 HierarchyChangedInfo *info = client_data;
6225 g_object_ref (widget);
6227 do_screen_change (widget, info->previous_screen, info->new_screen);
6229 if (GTK_IS_CONTAINER (widget))
6230 gtk_container_forall (GTK_CONTAINER (widget),
6231 gtk_widget_propagate_screen_changed_recurse,
6234 g_object_unref (widget);
6238 * gtk_widget_is_composited:
6239 * @widget: a #GtkWidget
6241 * Whether @widget can rely on having its alpha channel
6242 * drawn correctly. On X11 this function returns whether a
6243 * compositing manager is running for @widget's screen.
6245 * Please note that the semantics of this call will change
6246 * in the future if used on a widget that has a composited
6247 * window in its heirarchy (as set by
6248 * gdk_window_set_composited()).
6250 * Return value: %TRUE if the widget can rely on its alpha
6251 * channel being drawn correctly.
6256 gtk_widget_is_composited (GtkWidget *widget)
6260 g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
6262 screen = gtk_widget_get_screen (widget);
6264 return gdk_screen_is_composited (screen);
6268 propagate_composited_changed (GtkWidget *widget,
6271 if (GTK_IS_CONTAINER (widget))
6273 gtk_container_forall (GTK_CONTAINER (widget),
6274 propagate_composited_changed,
6278 g_signal_emit (widget, widget_signals[COMPOSITED_CHANGED], 0);
6282 _gtk_widget_propagate_composited_changed (GtkWidget *widget)
6284 propagate_composited_changed (widget, NULL);
6288 * _gtk_widget_propagate_screen_changed:
6289 * @widget: a #GtkWidget
6290 * @previous_screen: Previous screen
6292 * Propagates changes in the screen for a widget to all
6293 * children, emitting #GtkWidget::screen-changed.
6296 _gtk_widget_propagate_screen_changed (GtkWidget *widget,
6297 GdkScreen *previous_screen)
6299 HierarchyChangedInfo info;
6301 info.previous_screen = previous_screen;
6302 info.new_screen = gtk_widget_get_screen (widget);
6304 if (previous_screen)
6305 g_object_ref (previous_screen);
6307 gtk_widget_propagate_screen_changed_recurse (widget, &info);
6309 if (previous_screen)
6310 g_object_unref (previous_screen);
6314 reset_rc_styles_recurse (GtkWidget *widget, gpointer data)
6316 if (GTK_WIDGET_RC_STYLE (widget))
6317 gtk_widget_reset_rc_style (widget);
6319 if (GTK_IS_CONTAINER (widget))
6320 gtk_container_forall (GTK_CONTAINER (widget),
6321 reset_rc_styles_recurse,
6326 gtk_widget_reset_rc_styles (GtkWidget *widget)
6328 g_return_if_fail (GTK_IS_WIDGET (widget));
6330 reset_rc_styles_recurse (widget, NULL);
6334 * gtk_widget_get_default_style:
6336 * Returns the default style used by all widgets initially.
6338 * Returns: the default style. This #GtkStyle object is owned
6339 * by GTK+ and should not be modified or freed.
6342 gtk_widget_get_default_style (void)
6344 if (!gtk_default_style)
6346 gtk_default_style = gtk_style_new ();
6347 g_object_ref (gtk_default_style);
6350 return gtk_default_style;
6353 static PangoContext *
6354 gtk_widget_peek_pango_context (GtkWidget *widget)
6356 return g_object_get_qdata (G_OBJECT (widget), quark_pango_context);
6360 * gtk_widget_get_pango_context:
6361 * @widget: a #GtkWidget
6363 * Gets a #PangoContext with the appropriate font map, font description,
6364 * and base direction for this widget. Unlike the context returned
6365 * by gtk_widget_create_pango_context(), this context is owned by
6366 * the widget (it can be used until the screen for the widget changes
6367 * or the widget is removed from its toplevel), and will be updated to
6368 * match any changes to the widget's attributes.
6370 * If you create and keep a #PangoLayout using this context, you must
6371 * deal with changes to the context by calling pango_layout_context_changed()
6372 * on the layout in response to the #GtkWidget::style-set and
6373 * #GtkWidget::direction-changed signals for the widget.
6375 * Return value: the #PangoContext for the widget.
6378 gtk_widget_get_pango_context (GtkWidget *widget)
6380 PangoContext *context;
6382 g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
6384 context = g_object_get_qdata (G_OBJECT (widget), quark_pango_context);
6387 context = gtk_widget_create_pango_context (GTK_WIDGET (widget));
6388 g_object_set_qdata_full (G_OBJECT (widget),
6389 quark_pango_context,
6398 update_pango_context (GtkWidget *widget,
6399 PangoContext *context)
6401 pango_context_set_font_description (context, widget->style->font_desc);
6402 pango_context_set_base_dir (context,
6403 gtk_widget_get_direction (widget) == GTK_TEXT_DIR_LTR ?
6404 PANGO_DIRECTION_LTR : PANGO_DIRECTION_RTL);
6408 gtk_widget_update_pango_context (GtkWidget *widget)
6410 PangoContext *context = gtk_widget_peek_pango_context (widget);
6416 update_pango_context (widget, context);
6418 screen = gtk_widget_get_screen_unchecked (widget);
6421 pango_cairo_context_set_resolution (context,
6422 gdk_screen_get_resolution (screen));
6423 pango_cairo_context_set_font_options (context,
6424 gdk_screen_get_font_options (screen));
6430 * gtk_widget_create_pango_context:
6431 * @widget: a #GtkWidget
6433 * Creates a new #PangoContext with the appropriate font map,
6434 * font description, and base direction for drawing text for
6435 * this widget. See also gtk_widget_get_pango_context().
6437 * Return value: the new #PangoContext
6440 gtk_widget_create_pango_context (GtkWidget *widget)
6443 PangoContext *context;
6445 g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
6447 screen = gtk_widget_get_screen_unchecked (widget);
6450 GTK_NOTE (MULTIHEAD,
6451 g_warning ("gtk_widget_create_pango_context ()) called without screen"));
6453 screen = gdk_screen_get_default ();
6456 context = gdk_pango_context_get_for_screen (screen);
6458 update_pango_context (widget, context);
6459 pango_context_set_language (context, gtk_get_default_language ());
6465 * gtk_widget_create_pango_layout:
6466 * @widget: a #GtkWidget
6467 * @text: text to set on the layout (can be %NULL)
6469 * Creates a new #PangoLayout with the appropriate font map,
6470 * font description, and base direction for drawing text for
6473 * If you keep a #PangoLayout created in this way around, in order to
6474 * notify the layout of changes to the base direction or font of this
6475 * widget, you must call pango_layout_context_changed() in response to
6476 * the #GtkWidget::style-set and #GtkWidget::direction-changed signals
6479 * Return value: the new #PangoLayout
6482 gtk_widget_create_pango_layout (GtkWidget *widget,
6485 PangoLayout *layout;
6486 PangoContext *context;
6488 g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
6490 context = gtk_widget_get_pango_context (widget);
6491 layout = pango_layout_new (context);
6494 pango_layout_set_text (layout, text, -1);
6500 * gtk_widget_render_icon:
6501 * @widget: a #GtkWidget
6502 * @stock_id: a stock ID
6503 * @size: a stock size. A size of (GtkIconSize)-1 means render at
6504 * the size of the source and don't scale (if there are multiple
6505 * source sizes, GTK+ picks one of the available sizes).
6506 * @detail: render detail to pass to theme engine
6508 * A convenience function that uses the theme engine and RC file
6509 * settings for @widget to look up @stock_id and render it to
6510 * a pixbuf. @stock_id should be a stock icon ID such as
6511 * #GTK_STOCK_OPEN or #GTK_STOCK_OK. @size should be a size
6512 * such as #GTK_ICON_SIZE_MENU. @detail should be a string that
6513 * identifies the widget or code doing the rendering, so that
6514 * theme engines can special-case rendering for that widget or code.
6516 * The pixels in the returned #GdkPixbuf are shared with the rest of
6517 * the application and should not be modified. The pixbuf should be freed
6518 * after use with g_object_unref().
6520 * Return value: a new pixbuf, or %NULL if the stock ID wasn't known
6523 gtk_widget_render_icon (GtkWidget *widget,
6524 const gchar *stock_id,
6526 const gchar *detail)
6528 GtkIconSet *icon_set;
6531 g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
6532 g_return_val_if_fail (stock_id != NULL, NULL);
6533 g_return_val_if_fail (size > GTK_ICON_SIZE_INVALID || size == -1, NULL);
6535 gtk_widget_ensure_style (widget);
6537 icon_set = gtk_style_lookup_icon_set (widget->style, stock_id);
6539 if (icon_set == NULL)
6542 retval = gtk_icon_set_render_icon (icon_set,
6544 gtk_widget_get_direction (widget),
6545 GTK_WIDGET_STATE (widget),
6554 * gtk_widget_set_parent_window:
6555 * @widget: a #GtkWidget.
6556 * @parent_window: the new parent window.
6558 * Sets a non default parent window for @widget.
6561 gtk_widget_set_parent_window (GtkWidget *widget,
6562 GdkWindow *parent_window)
6564 GdkWindow *old_parent_window;
6566 g_return_if_fail (GTK_IS_WIDGET (widget));
6568 old_parent_window = g_object_get_qdata (G_OBJECT (widget),
6569 quark_parent_window);
6571 if (parent_window != old_parent_window)
6573 g_object_set_qdata (G_OBJECT (widget), quark_parent_window,
6575 if (old_parent_window)
6576 g_object_unref (old_parent_window);
6578 g_object_ref (parent_window);
6583 * gtk_widget_get_parent_window:
6584 * @widget: a #GtkWidget.
6585 * @returns: the parent window of @widget.
6587 * Gets @widget's parent window.
6590 gtk_widget_get_parent_window (GtkWidget *widget)
6592 GdkWindow *parent_window;
6594 g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
6596 parent_window = g_object_get_qdata (G_OBJECT (widget), quark_parent_window);
6598 return (parent_window != NULL) ? parent_window :
6599 (widget->parent != NULL) ? widget->parent->window : NULL;
6604 * gtk_widget_set_child_visible:
6605 * @widget: a #GtkWidget
6606 * @is_visible: if %TRUE, @widget should be mapped along with its parent.
6608 * Sets whether @widget should be mapped along with its when its parent
6609 * is mapped and @widget has been shown with gtk_widget_show().
6611 * The child visibility can be set for widget before it is added to
6612 * a container with gtk_widget_set_parent(), to avoid mapping
6613 * children unnecessary before immediately unmapping them. However
6614 * it will be reset to its default state of %TRUE when the widget
6615 * is removed from a container.
6617 * Note that changing the child visibility of a widget does not
6618 * queue a resize on the widget. Most of the time, the size of
6619 * a widget is computed from all visible children, whether or
6620 * not they are mapped. If this is not the case, the container
6621 * can queue a resize itself.
6623 * This function is only useful for container implementations and
6624 * never should be called by an application.
6627 gtk_widget_set_child_visible (GtkWidget *widget,
6628 gboolean is_visible)
6630 g_return_if_fail (GTK_IS_WIDGET (widget));
6631 g_return_if_fail (!GTK_WIDGET_TOPLEVEL (widget));
6633 g_object_ref (widget);
6636 GTK_PRIVATE_SET_FLAG (widget, GTK_CHILD_VISIBLE);
6639 GtkWidget *toplevel;
6641 GTK_PRIVATE_UNSET_FLAG (widget, GTK_CHILD_VISIBLE);
6643 toplevel = gtk_widget_get_toplevel (widget);
6644 if (toplevel != widget && GTK_WIDGET_TOPLEVEL (toplevel))
6645 _gtk_window_unset_focus_and_default (GTK_WINDOW (toplevel), widget);
6648 if (widget->parent && GTK_WIDGET_REALIZED (widget->parent))
6650 if (GTK_WIDGET_MAPPED (widget->parent) &&
6651 GTK_WIDGET_CHILD_VISIBLE (widget) &&
6652 GTK_WIDGET_VISIBLE (widget))
6653 gtk_widget_map (widget);
6655 gtk_widget_unmap (widget);
6658 g_object_unref (widget);
6662 * gtk_widget_get_child_visible:
6663 * @widget: a #GtkWidget
6665 * Gets the value set with gtk_widget_set_child_visible().
6666 * If you feel a need to use this function, your code probably
6667 * needs reorganization.
6669 * This function is only useful for container implementations and
6670 * never should be called by an application.
6672 * Return value: %TRUE if the widget is mapped with the parent.
6675 gtk_widget_get_child_visible (GtkWidget *widget)
6677 g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
6679 return GTK_WIDGET_CHILD_VISIBLE (widget);
6683 gtk_widget_get_screen_unchecked (GtkWidget *widget)
6685 GtkWidget *toplevel;
6687 toplevel = gtk_widget_get_toplevel (widget);
6689 if (GTK_WIDGET_TOPLEVEL (toplevel))
6691 if (GTK_IS_WINDOW (toplevel))
6692 return GTK_WINDOW (toplevel)->screen;
6693 else if (GTK_IS_INVISIBLE (toplevel))
6694 return GTK_INVISIBLE (widget)->screen;
6701 * gtk_widget_get_screen:
6702 * @widget: a #GtkWidget
6704 * Get the #GdkScreen from the toplevel window associated with
6705 * this widget. This function can only be called after the widget
6706 * has been added to a widget hierarchy with a #GtkWindow
6709 * In general, you should only create screen specific
6710 * resources when a widget has been realized, and you should
6711 * free those resources when the widget is unrealized.
6713 * Return value: the #GdkScreen for the toplevel for this widget.
6718 gtk_widget_get_screen (GtkWidget *widget)
6722 g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
6724 screen = gtk_widget_get_screen_unchecked (widget);
6731 g_warning (G_STRLOC ": Can't get associated screen"
6732 " for a widget unless it is inside a toplevel GtkWindow\n"
6733 " widget type is %s associated top level type is %s",
6734 g_type_name (G_OBJECT_TYPE(G_OBJECT (widget))),
6735 g_type_name (G_OBJECT_TYPE(G_OBJECT (toplevel))));
6737 return gdk_screen_get_default ();
6742 * gtk_widget_has_screen:
6743 * @widget: a #GtkWidget
6745 * Checks whether there is a #GdkScreen is associated with
6746 * this widget. All toplevel widgets have an associated
6747 * screen, and all widgets added into a heirarchy with a toplevel
6748 * window at the top.
6750 * Return value: %TRUE if there is a #GdkScreen associcated
6756 gtk_widget_has_screen (GtkWidget *widget)
6758 g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
6760 return (gtk_widget_get_screen_unchecked (widget) != NULL);
6764 * gtk_widget_get_display:
6765 * @widget: a #GtkWidget
6767 * Get the #GdkDisplay for the toplevel window associated with
6768 * this widget. This function can only be called after the widget
6769 * has been added to a widget hierarchy with a #GtkWindow at the top.
6771 * In general, you should only create display specific
6772 * resources when a widget has been realized, and you should
6773 * free those resources when the widget is unrealized.
6775 * Return value: the #GdkDisplay for the toplevel for this widget.
6780 gtk_widget_get_display (GtkWidget *widget)
6782 g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
6784 return gdk_screen_get_display (gtk_widget_get_screen (widget));
6788 * gtk_widget_get_root_window:
6789 * @widget: a #GtkWidget
6791 * Get the root window where this widget is located. This function can
6792 * only be called after the widget has been added to a widget
6793 * heirarchy with #GtkWindow at the top.
6795 * The root window is useful for such purposes as creating a popup
6796 * #GdkWindow associated with the window. In general, you should only
6797 * create display specific resources when a widget has been realized,
6798 * and you should free those resources when the widget is unrealized.
6800 * Return value: the #GdkWindow root window for the toplevel for this widget.
6805 gtk_widget_get_root_window (GtkWidget *widget)
6807 g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
6809 return gdk_screen_get_root_window (gtk_widget_get_screen (widget));
6813 * gtk_widget_child_focus:
6814 * @widget: a #GtkWidget
6815 * @direction: direction of focus movement
6817 * This function is used by custom widget implementations; if you're
6818 * writing an app, you'd use gtk_widget_grab_focus() to move the focus
6819 * to a particular widget, and gtk_container_set_focus_chain() to
6820 * change the focus tab order. So you may want to investigate those
6821 * functions instead.
6823 * gtk_widget_child_focus() is called by containers as the user moves
6824 * around the window using keyboard shortcuts. @direction indicates
6825 * what kind of motion is taking place (up, down, left, right, tab
6826 * forward, tab backward). gtk_widget_child_focus() emits the
6827 * #GtkWidget::focus" signal; widgets override the default handler
6828 * for this signal in order to implement appropriate focus behavior.
6830 * The default ::focus handler for a widget should return %TRUE if
6831 * moving in @direction left the focus on a focusable location inside
6832 * that widget, and %FALSE if moving in @direction moved the focus
6833 * outside the widget. If returning %TRUE, widgets normally
6834 * call gtk_widget_grab_focus() to place the focus accordingly;
6835 * if returning %FALSE, they don't modify the current focus location.
6837 * This function replaces gtk_container_focus() from GTK+ 1.2.
6838 * It was necessary to check that the child was visible, sensitive,
6839 * and focusable before calling gtk_container_focus().
6840 * gtk_widget_child_focus() returns %FALSE if the widget is not
6841 * currently in a focusable state, so there's no need for those checks.
6843 * Return value: %TRUE if focus ended up inside @widget
6846 gtk_widget_child_focus (GtkWidget *widget,
6847 GtkDirectionType direction)
6849 gboolean return_val;
6851 g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
6853 if (!GTK_WIDGET_VISIBLE (widget) ||
6854 !GTK_WIDGET_IS_SENSITIVE (widget))
6857 /* child widgets must set CAN_FOCUS, containers
6858 * don't have to though.
6860 if (!GTK_IS_CONTAINER (widget) &&
6861 !GTK_WIDGET_CAN_FOCUS (widget))
6864 g_signal_emit (widget,
6865 widget_signals[FOCUS],
6867 direction, &return_val);
6873 * gtk_widget_keynav_failed:
6874 * @widget: a #GtkWidget
6875 * @direction: direction of focus movement
6877 * This function should be called whenever keyboard navigation within
6878 * a single widget hits a boundary. The function emits the
6879 * #GtkWidget::keynav-failed signal on the widget and its return
6880 * value should be interpreted in a way similar to the return value of
6881 * gtk_widget_child_focus():
6883 * When %TRUE is returned, stay in the widget, the failed keyboard
6884 * navigation is Ok and/or there is nowhere we can/should move the
6887 * When %FALSE is returned, the caller should continue with keyboard
6888 * navigation outside the widget, e.g. by calling
6889 * gtk_widget_child_focus() on the widget's toplevel.
6891 * The default ::keynav-failed handler returns %TRUE for
6892 * %GTK_DIR_TAB_FORWARD and %GTK_DIR_TAB_BACKWARD. For the other
6893 * values of #GtkDirectionType, it looks at the
6894 * #GtkSettings:gtk-keynav-cursor-only setting and returns %FALSE
6895 * if the setting is %TRUE. This way the entire user interface
6896 * becomes cursor-navigatable on input devices such as mobile phones
6897 * which only have cursor keys but no tab key.
6899 * Whenever the default handler returns %TRUE, it also calls
6900 * gtk_widget_error_bell() to notify the user of the failed keyboard
6903 * A use case for providing an own implementation of ::keynav-failed
6904 * (either by connecting to it or by overriding it) would be a row of
6905 * #GtkEntry widgets where the user should be able to navigate the
6906 * entire row with the cursor keys, as e.g. known from user interfaces
6907 * that require entering license keys.
6909 * Return value: %TRUE if stopping keyboard navigation is fine, %FALSE
6910 * if the emitting widget should try to handle the keyboard
6911 * navigation attempt in its parent container(s).
6916 gtk_widget_keynav_failed (GtkWidget *widget,
6917 GtkDirectionType direction)
6919 gboolean return_val;
6921 g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
6923 g_signal_emit (widget, widget_signals[KEYNAV_FAILED], 0,
6924 direction, &return_val);
6930 * gtk_widget_error_bell:
6931 * @widget: a #GtkWidget
6933 * Notifies the user about an input-related error on this widget.
6934 * If the #GtkSettings:gtk-error-bell setting is %TRUE, it calls
6935 * gdk_window_beep(), otherwise it does nothing.
6937 * Note that the effect of gdk_window_beep() can be configured in many
6938 * ways, depending on the windowing backend and the desktop environment
6939 * or window manager that is used.
6944 gtk_widget_error_bell (GtkWidget *widget)
6948 g_return_if_fail (GTK_IS_WIDGET (widget));
6950 g_object_get (gtk_widget_get_settings (widget),
6951 "gtk-error-bell", &beep,
6954 if (beep && widget->window)
6955 gdk_window_beep (widget->window);
6959 * gtk_widget_set_uposition:
6960 * @widget: a #GtkWidget
6961 * @x: x position; -1 to unset x; -2 to leave x unchanged
6962 * @y: y position; -1 to unset y; -2 to leave y unchanged
6965 * Sets the position of a widget. The funny "u" in the name comes from
6966 * the "user position" hint specified by the X Window System, and
6967 * exists for legacy reasons. This function doesn't work if a widget
6968 * is inside a container; it's only really useful on #GtkWindow.
6970 * Don't use this function to center dialogs over the main application
6971 * window; most window managers will do the centering on your behalf
6972 * if you call gtk_window_set_transient_for(), and it's really not
6973 * possible to get the centering to work correctly in all cases from
6974 * application code. But if you insist, use gtk_window_set_position()
6975 * to set #GTK_WIN_POS_CENTER_ON_PARENT, don't do the centering
6978 * Note that although @x and @y can be individually unset, the position
6979 * is not honoured unless both @x and @y are set.
6982 gtk_widget_set_uposition (GtkWidget *widget,
6986 /* FIXME this function is the only place that aux_info->x and
6987 * aux_info->y are even used I believe, and this function is
6988 * deprecated. Should be cleaned up.
6990 * (Actually, size_allocate uses them) -Yosh
6993 GtkWidgetAuxInfo *aux_info;
6995 g_return_if_fail (GTK_IS_WIDGET (widget));
6997 aux_info =_gtk_widget_get_aux_info (widget, TRUE);
7002 aux_info->x_set = FALSE;
7005 aux_info->x_set = TRUE;
7013 aux_info->y_set = FALSE;
7016 aux_info->y_set = TRUE;
7021 if (GTK_IS_WINDOW (widget) && aux_info->x_set && aux_info->y_set)
7022 _gtk_window_reposition (GTK_WINDOW (widget), aux_info->x, aux_info->y);
7024 if (GTK_WIDGET_VISIBLE (widget) && widget->parent)
7025 gtk_widget_size_allocate (widget, &widget->allocation);
7029 gtk_widget_set_usize_internal (GtkWidget *widget,
7033 GtkWidgetAuxInfo *aux_info;
7034 gboolean changed = FALSE;
7036 g_object_freeze_notify (G_OBJECT (widget));
7038 aux_info = _gtk_widget_get_aux_info (widget, TRUE);
7040 if (width > -2 && aux_info->width != width)
7042 g_object_notify (G_OBJECT (widget), "width-request");
7043 aux_info->width = width;
7046 if (height > -2 && aux_info->height != height)
7048 g_object_notify (G_OBJECT (widget), "height-request");
7049 aux_info->height = height;
7053 if (GTK_WIDGET_VISIBLE (widget) && changed)
7054 gtk_widget_queue_resize (widget);
7056 g_object_thaw_notify (G_OBJECT (widget));
7060 * gtk_widget_set_usize:
7061 * @widget: a #GtkWidget
7062 * @width: minimum width, or -1 to unset
7063 * @height: minimum height, or -1 to unset
7065 * Sets the minimum size of a widget; that is, the widget's size
7066 * request will be @width by @height. You can use this function to
7067 * force a widget to be either larger or smaller than it is. The
7068 * strange "usize" name dates from the early days of GTK+, and derives
7069 * from X Window System terminology. In many cases,
7070 * gtk_window_set_default_size() is a better choice for toplevel
7071 * windows than this function; setting the default size will still
7072 * allow users to shrink the window. Setting the usize will force them
7073 * to leave the window at least as large as the usize. When dealing
7074 * with window sizes, gtk_window_set_geometry_hints() can be a useful
7077 * Note the inherent danger of setting any fixed size - themes,
7078 * translations into other languages, different fonts, and user action
7079 * can all change the appropriate size for a given widget. So, it's
7080 * basically impossible to hardcode a size that will always be
7083 * Deprecated: 2.2: Use gtk_widget_set_size_request() instead.
7086 gtk_widget_set_usize (GtkWidget *widget,
7090 g_return_if_fail (GTK_IS_WIDGET (widget));
7092 gtk_widget_set_usize_internal (widget, width, height);
7096 * gtk_widget_set_size_request:
7097 * @widget: a #GtkWidget
7098 * @width: width @widget should request, or -1 to unset
7099 * @height: height @widget should request, or -1 to unset
7101 * Sets the minimum size of a widget; that is, the widget's size
7102 * request will be @width by @height. You can use this function to
7103 * force a widget to be either larger or smaller than it normally
7106 * In most cases, gtk_window_set_default_size() is a better choice for
7107 * toplevel windows than this function; setting the default size will
7108 * still allow users to shrink the window. Setting the size request
7109 * will force them to leave the window at least as large as the size
7110 * request. When dealing with window sizes,
7111 * gtk_window_set_geometry_hints() can be a useful function as well.
7113 * Note the inherent danger of setting any fixed size - themes,
7114 * translations into other languages, different fonts, and user action
7115 * can all change the appropriate size for a given widget. So, it's
7116 * basically impossible to hardcode a size that will always be
7119 * The size request of a widget is the smallest size a widget can
7120 * accept while still functioning well and drawing itself correctly.
7121 * However in some strange cases a widget may be allocated less than
7122 * its requested size, and in many cases a widget may be allocated more
7123 * space than it requested.
7125 * If the size request in a given direction is -1 (unset), then
7126 * the "natural" size request of the widget will be used instead.
7128 * Widgets can't actually be allocated a size less than 1 by 1, but
7129 * you can pass 0,0 to this function to mean "as small as possible."
7132 gtk_widget_set_size_request (GtkWidget *widget,
7136 g_return_if_fail (GTK_IS_WIDGET (widget));
7137 g_return_if_fail (width >= -1);
7138 g_return_if_fail (height >= -1);
7145 gtk_widget_set_usize_internal (widget, width, height);
7150 * gtk_widget_get_size_request:
7151 * @widget: a #GtkWidget
7152 * @width: return location for width, or %NULL
7153 * @height: return location for height, or %NULL
7155 * Gets the size request that was explicitly set for the widget using
7156 * gtk_widget_set_size_request(). A value of -1 stored in @width or
7157 * @height indicates that that dimension has not been set explicitly
7158 * and the natural requisition of the widget will be used intead. See
7159 * gtk_widget_set_size_request(). To get the size a widget will
7160 * actually use, call gtk_widget_size_request() instead of
7164 gtk_widget_get_size_request (GtkWidget *widget,
7168 GtkWidgetAuxInfo *aux_info;
7170 g_return_if_fail (GTK_IS_WIDGET (widget));
7172 aux_info = _gtk_widget_get_aux_info (widget, FALSE);
7175 *width = aux_info ? aux_info->width : -1;
7178 *height = aux_info ? aux_info->height : -1;
7182 * gtk_widget_set_events:
7183 * @widget: a #GtkWidget
7184 * @events: event mask
7186 * Sets the event mask (see #GdkEventMask) for a widget. The event
7187 * mask determines which events a widget will receive. Keep in mind
7188 * that different widgets have different default event masks, and by
7189 * changing the event mask you may disrupt a widget's functionality,
7190 * so be careful. This function must be called while a widget is
7191 * unrealized. Consider gtk_widget_add_events() for widgets that are
7192 * already realized, or if you want to preserve the existing event
7193 * mask. This function can't be used with #GTK_NO_WINDOW widgets;
7194 * to get events on those widgets, place them inside a #GtkEventBox
7195 * and receive events on the event box.
7198 gtk_widget_set_events (GtkWidget *widget,
7201 g_return_if_fail (GTK_IS_WIDGET (widget));
7202 g_return_if_fail (!GTK_WIDGET_REALIZED (widget));
7204 g_object_set_qdata (G_OBJECT (widget), quark_event_mask,
7205 GINT_TO_POINTER (events));
7206 g_object_notify (G_OBJECT (widget), "events");
7210 gtk_widget_add_events_internal (GtkWidget *widget,
7216 for (l = window_list; l != NULL; l = l->next)
7218 GdkWindow *window = l->data;
7221 gdk_window_get_user_data (window, &user_data);
7222 if (user_data == widget)
7226 gdk_window_set_events (window, gdk_window_get_events (window) | events);
7228 children = gdk_window_get_children (window);
7229 gtk_widget_add_events_internal (widget, events, children);
7230 g_list_free (children);
7236 * gtk_widget_add_events:
7237 * @widget: a #GtkWidget
7238 * @events: an event mask, see #GdkEventMask
7240 * Adds the events in the bitfield @events to the event mask for
7241 * @widget. See gtk_widget_set_events() for details.
7244 gtk_widget_add_events (GtkWidget *widget,
7249 g_return_if_fail (GTK_IS_WIDGET (widget));
7251 old_events = GPOINTER_TO_INT (g_object_get_qdata (G_OBJECT (widget), quark_event_mask));
7252 g_object_set_qdata (G_OBJECT (widget), quark_event_mask,
7253 GINT_TO_POINTER (old_events | events));
7255 if (GTK_WIDGET_REALIZED (widget))
7259 if (GTK_WIDGET_NO_WINDOW (widget))
7260 window_list = gdk_window_get_children (widget->window);
7262 window_list = g_list_prepend (NULL, widget->window);
7264 gtk_widget_add_events_internal (widget, events, window_list);
7266 g_list_free (window_list);
7269 g_object_notify (G_OBJECT (widget), "events");
7273 * gtk_widget_set_extension_events:
7274 * @widget: a #GtkWidget
7275 * @mode: bitfield of extension events to receive
7277 * Sets the extension events mask to @mode. See #GdkExtensionMode
7278 * and gdk_input_set_extension_events().
7281 gtk_widget_set_extension_events (GtkWidget *widget,
7282 GdkExtensionMode mode)
7284 g_return_if_fail (GTK_IS_WIDGET (widget));
7286 if (GTK_WIDGET_REALIZED (widget))
7287 gtk_widget_set_extension_events_internal (widget, mode, NULL);
7289 g_object_set_qdata (G_OBJECT (widget), quark_extension_event_mode,
7290 GINT_TO_POINTER (mode));
7291 g_object_notify (G_OBJECT (widget), "extension-events");
7295 * gtk_widget_get_toplevel:
7296 * @widget: a #GtkWidget
7298 * This function returns the topmost widget in the container hierarchy
7299 * @widget is a part of. If @widget has no parent widgets, it will be
7300 * returned as the topmost widget. No reference will be added to the
7301 * returned widget; it should not be unreferenced.
7303 * Note the difference in behavior vs. gtk_widget_get_ancestor();
7304 * <literal>gtk_widget_get_ancestor (widget, GTK_TYPE_WINDOW)</literal>
7306 * %NULL if @widget wasn't inside a toplevel window, and if the
7307 * window was inside a #GtkWindow-derived widget which was in turn
7308 * inside the toplevel #GtkWindow. While the second case may
7309 * seem unlikely, it actually happens when a #GtkPlug is embedded
7310 * inside a #GtkSocket within the same application.
7312 * To reliably find the toplevel #GtkWindow, use
7313 * gtk_widget_get_toplevel() and check if the %TOPLEVEL flags
7314 * is set on the result.
7316 * GtkWidget *toplevel = gtk_widget_get_toplevel (widget);
7317 * if (GTK_WIDGET_TOPLEVEL (toplevel))
7319 * /* Perform action on toplevel. */
7323 * Return value: the topmost ancestor of @widget, or @widget itself
7324 * if there's no ancestor.
7327 gtk_widget_get_toplevel (GtkWidget *widget)
7329 g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
7331 while (widget->parent)
7332 widget = widget->parent;
7338 * gtk_widget_get_ancestor:
7339 * @widget: a #GtkWidget
7340 * @widget_type: ancestor type
7342 * Gets the first ancestor of @widget with type @widget_type. For example,
7343 * <literal>gtk_widget_get_ancestor (widget, GTK_TYPE_BOX)</literal> gets
7344 * the first #GtkBox that's an ancestor of @widget. No reference will be
7345 * added to the returned widget; it should not be unreferenced. See note
7346 * about checking for a toplevel #GtkWindow in the docs for
7347 * gtk_widget_get_toplevel().
7349 * Note that unlike gtk_widget_is_ancestor(), gtk_widget_get_ancestor()
7350 * considers @widget to be an ancestor of itself.
7352 * Return value: the ancestor widget, or %NULL if not found
7355 gtk_widget_get_ancestor (GtkWidget *widget,
7358 g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
7360 while (widget && !g_type_is_a (GTK_WIDGET_TYPE (widget), widget_type))
7361 widget = widget->parent;
7363 if (!(widget && g_type_is_a (GTK_WIDGET_TYPE (widget), widget_type)))
7370 * gtk_widget_get_colormap:
7371 * @widget: a #GtkWidget
7373 * Gets the colormap that will be used to render @widget. No reference will
7374 * be added to the returned colormap; it should not be unreferenced.
7376 * Return value: the colormap used by @widget
7379 gtk_widget_get_colormap (GtkWidget *widget)
7381 GdkColormap *colormap;
7382 GtkWidget *tmp_widget;
7384 g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
7388 colormap = gdk_drawable_get_colormap (widget->window);
7389 /* If window was destroyed previously, we'll get NULL here */
7394 tmp_widget = widget;
7397 colormap = g_object_get_qdata (G_OBJECT (tmp_widget), quark_colormap);
7401 tmp_widget= tmp_widget->parent;
7404 return gdk_screen_get_default_colormap (gtk_widget_get_screen (widget));
7408 * gtk_widget_get_visual:
7409 * @widget: a #GtkWidget
7411 * Gets the visual that will be used to render @widget.
7413 * Return value: the visual for @widget
7416 gtk_widget_get_visual (GtkWidget *widget)
7418 g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
7420 return gdk_colormap_get_visual (gtk_widget_get_colormap (widget));
7424 * gtk_widget_get_settings:
7425 * @widget: a #GtkWidget
7427 * Gets the settings object holding the settings (global property
7428 * settings, RC file information, etc) used for this widget.
7430 * Note that this function can only be called when the #GtkWidget
7431 * is attached to a toplevel, since the settings object is specific
7432 * to a particular #GdkScreen.
7434 * Return value: the relevant #GtkSettings object
7437 gtk_widget_get_settings (GtkWidget *widget)
7439 g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
7441 return gtk_settings_get_for_screen (gtk_widget_get_screen (widget));
7445 * gtk_widget_set_colormap:
7446 * @widget: a #GtkWidget
7447 * @colormap: a colormap
7449 * Sets the colormap for the widget to the given value. Widget must not
7450 * have been previously realized. This probably should only be used
7451 * from an <function>init()</function> function (i.e. from the constructor
7455 gtk_widget_set_colormap (GtkWidget *widget,
7456 GdkColormap *colormap)
7458 g_return_if_fail (GTK_IS_WIDGET (widget));
7459 g_return_if_fail (!GTK_WIDGET_REALIZED (widget));
7460 g_return_if_fail (GDK_IS_COLORMAP (colormap));
7462 g_object_ref (colormap);
7464 g_object_set_qdata_full (G_OBJECT (widget),
7471 * gtk_widget_get_events:
7472 * @widget: a #GtkWidget
7474 * Returns the event mask for the widget (a bitfield containing flags
7475 * from the #GdkEventMask enumeration). These are the events that the widget
7478 * Return value: event mask for @widget
7481 gtk_widget_get_events (GtkWidget *widget)
7483 g_return_val_if_fail (GTK_IS_WIDGET (widget), 0);
7485 return GPOINTER_TO_INT (g_object_get_qdata (G_OBJECT (widget), quark_event_mask));
7489 * gtk_widget_get_extension_events:
7490 * @widget: a #GtkWidget
7492 * Retrieves the extension events the widget will receive; see
7493 * gdk_input_set_extension_events().
7495 * Return value: extension events for @widget
7498 gtk_widget_get_extension_events (GtkWidget *widget)
7500 g_return_val_if_fail (GTK_IS_WIDGET (widget), 0);
7502 return GPOINTER_TO_INT (g_object_get_qdata (G_OBJECT (widget), quark_extension_event_mode));
7506 * gtk_widget_get_pointer:
7507 * @widget: a #GtkWidget
7508 * @x: return location for the X coordinate, or %NULL
7509 * @y: return location for the Y coordinate, or %NULL
7511 * Obtains the location of the mouse pointer in widget coordinates.
7512 * Widget coordinates are a bit odd; for historical reasons, they are
7513 * defined as @widget->window coordinates for widgets that are not
7514 * #GTK_NO_WINDOW widgets, and are relative to @widget->allocation.x,
7515 * @widget->allocation.y for widgets that are #GTK_NO_WINDOW widgets.
7518 gtk_widget_get_pointer (GtkWidget *widget,
7522 g_return_if_fail (GTK_IS_WIDGET (widget));
7529 if (GTK_WIDGET_REALIZED (widget))
7531 gdk_window_get_pointer (widget->window, x, y, NULL);
7533 if (GTK_WIDGET_NO_WINDOW (widget))
7536 *x -= widget->allocation.x;
7538 *y -= widget->allocation.y;
7544 * gtk_widget_is_ancestor:
7545 * @widget: a #GtkWidget
7546 * @ancestor: another #GtkWidget
7548 * Determines whether @widget is somewhere inside @ancestor, possibly with
7549 * intermediate containers.
7551 * Return value: %TRUE if @ancestor contains @widget as a child,
7552 * grandchild, great grandchild, etc.
7555 gtk_widget_is_ancestor (GtkWidget *widget,
7556 GtkWidget *ancestor)
7558 g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
7559 g_return_val_if_fail (ancestor != NULL, FALSE);
7563 if (widget->parent == ancestor)
7565 widget = widget->parent;
7571 static GQuark quark_composite_name = 0;
7574 * gtk_widget_set_composite_name:
7575 * @widget: a #GtkWidget.
7576 * @name: the name to set
7578 * Sets a widgets composite name. The widget must be
7579 * a composite child of its parent; see gtk_widget_push_composite_child().
7582 gtk_widget_set_composite_name (GtkWidget *widget,
7585 g_return_if_fail (GTK_IS_WIDGET (widget));
7586 g_return_if_fail (GTK_WIDGET_COMPOSITE_CHILD (widget));
7587 g_return_if_fail (name != NULL);
7589 if (!quark_composite_name)
7590 quark_composite_name = g_quark_from_static_string ("gtk-composite-name");
7592 g_object_set_qdata_full (G_OBJECT (widget),
7593 quark_composite_name,
7599 * gtk_widget_get_composite_name:
7600 * @widget: a #GtkWidget
7602 * Obtains the composite name of a widget.
7604 * Returns: the composite name of @widget, or %NULL if @widget is not
7605 * a composite child. The string should be freed when it is no
7609 gtk_widget_get_composite_name (GtkWidget *widget)
7611 g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
7613 if (GTK_WIDGET_COMPOSITE_CHILD (widget) && widget->parent)
7614 return _gtk_container_child_composite_name (GTK_CONTAINER (widget->parent),
7621 * gtk_widget_push_composite_child:
7623 * Makes all newly-created widgets as composite children until
7624 * the corresponding gtk_widget_pop_composite_child() call.
7626 * A composite child is a child that's an implementation detail of the
7627 * container it's inside and should not be visible to people using the
7628 * container. Composite children aren't treated differently by GTK (but
7629 * see gtk_container_foreach() vs. gtk_container_forall()), but e.g. GUI
7630 * builders might want to treat them in a different way.
7632 * Here is a simple example:
7634 * gtk_widget_push_composite_child ();
7635 * scrolled_window->hscrollbar = gtk_hscrollbar_new (hadjustment);
7636 * gtk_widget_set_composite_name (scrolled_window->hscrollbar, "hscrollbar");
7637 * gtk_widget_pop_composite_child ();
7638 * gtk_widget_set_parent (scrolled_window->hscrollbar,
7639 * GTK_WIDGET (scrolled_window));
7640 * g_object_ref (scrolled_window->hscrollbar);
7644 gtk_widget_push_composite_child (void)
7646 composite_child_stack++;
7650 * gtk_widget_pop_composite_child:
7652 * Cancels the effect of a previous call to gtk_widget_push_composite_child().
7655 gtk_widget_pop_composite_child (void)
7657 if (composite_child_stack)
7658 composite_child_stack--;
7662 * gtk_widget_push_colormap:
7663 * @cmap: a #GdkColormap
7665 * Pushes @cmap onto a global stack of colormaps; the topmost
7666 * colormap on the stack will be used to create all widgets.
7667 * Remove @cmap with gtk_widget_pop_colormap(). There's little
7668 * reason to use this function.
7671 gtk_widget_push_colormap (GdkColormap *cmap)
7673 g_return_if_fail (!cmap || GDK_IS_COLORMAP (cmap));
7675 colormap_stack = g_slist_prepend (colormap_stack, cmap);
7679 * gtk_widget_pop_colormap:
7681 * Removes a colormap pushed with gtk_widget_push_colormap().
7684 gtk_widget_pop_colormap (void)
7687 colormap_stack = g_slist_delete_link (colormap_stack, colormap_stack);
7691 * gtk_widget_set_default_colormap:
7692 * @colormap: a #GdkColormap
7694 * Sets the default colormap to use when creating widgets.
7695 * gtk_widget_push_colormap() is a better function to use if
7696 * you only want to affect a few widgets, rather than all widgets.
7699 gtk_widget_set_default_colormap (GdkColormap *colormap)
7701 g_return_if_fail (GDK_IS_COLORMAP (colormap));
7703 gdk_screen_set_default_colormap (gdk_colormap_get_screen (colormap),
7708 * gtk_widget_get_default_colormap:
7710 * Obtains the default colormap used to create widgets.
7712 * Return value: default widget colormap
7715 gtk_widget_get_default_colormap (void)
7717 return gdk_screen_get_default_colormap (gdk_screen_get_default ());
7721 * gtk_widget_get_default_visual:
7723 * Obtains the visual of the default colormap. Not really useful;
7724 * used to be useful before gdk_colormap_get_visual() existed.
7726 * Return value: visual of the default colormap
7729 gtk_widget_get_default_visual (void)
7731 return gdk_colormap_get_visual (gtk_widget_get_default_colormap ());
7735 gtk_widget_emit_direction_changed (GtkWidget *widget,
7736 GtkTextDirection old_dir)
7738 gtk_widget_update_pango_context (widget);
7740 g_signal_emit (widget, widget_signals[DIRECTION_CHANGED], 0, old_dir);
7744 * gtk_widget_set_direction:
7745 * @widget: a #GtkWidget
7746 * @dir: the new direction
7748 * Sets the reading direction on a particular widget. This direction
7749 * controls the primary direction for widgets containing text,
7750 * and also the direction in which the children of a container are
7751 * packed. The ability to set the direction is present in order
7752 * so that correct localization into languages with right-to-left
7753 * reading directions can be done. Generally, applications will
7754 * let the default reading direction present, except for containers
7755 * where the containers are arranged in an order that is explicitely
7756 * visual rather than logical (such as buttons for text justification).
7758 * If the direction is set to %GTK_TEXT_DIR_NONE, then the value
7759 * set by gtk_widget_set_default_direction() will be used.
7762 gtk_widget_set_direction (GtkWidget *widget,
7763 GtkTextDirection dir)
7765 GtkTextDirection old_dir;
7767 g_return_if_fail (GTK_IS_WIDGET (widget));
7768 g_return_if_fail (dir >= GTK_TEXT_DIR_NONE && dir <= GTK_TEXT_DIR_RTL);
7770 old_dir = gtk_widget_get_direction (widget);
7772 if (dir == GTK_TEXT_DIR_NONE)
7773 GTK_PRIVATE_UNSET_FLAG (widget, GTK_DIRECTION_SET);
7776 GTK_PRIVATE_SET_FLAG (widget, GTK_DIRECTION_SET);
7777 if (dir == GTK_TEXT_DIR_LTR)
7778 GTK_PRIVATE_SET_FLAG (widget, GTK_DIRECTION_LTR);
7780 GTK_PRIVATE_UNSET_FLAG (widget, GTK_DIRECTION_LTR);
7783 if (old_dir != gtk_widget_get_direction (widget))
7784 gtk_widget_emit_direction_changed (widget, old_dir);
7788 * gtk_widget_get_direction:
7789 * @widget: a #GtkWidget
7791 * Gets the reading direction for a particular widget. See
7792 * gtk_widget_set_direction().
7794 * Return value: the reading direction for the widget.
7797 gtk_widget_get_direction (GtkWidget *widget)
7799 g_return_val_if_fail (GTK_IS_WIDGET (widget), GTK_TEXT_DIR_LTR);
7801 if (GTK_WIDGET_DIRECTION_SET (widget))
7802 return GTK_WIDGET_DIRECTION_LTR (widget) ? GTK_TEXT_DIR_LTR : GTK_TEXT_DIR_RTL;
7804 return gtk_default_direction;
7808 gtk_widget_set_default_direction_recurse (GtkWidget *widget, gpointer data)
7810 GtkTextDirection old_dir = GPOINTER_TO_UINT (data);
7812 g_object_ref (widget);
7814 if (!GTK_WIDGET_DIRECTION_SET (widget))
7815 gtk_widget_emit_direction_changed (widget, old_dir);
7817 if (GTK_IS_CONTAINER (widget))
7818 gtk_container_forall (GTK_CONTAINER (widget),
7819 gtk_widget_set_default_direction_recurse,
7822 g_object_unref (widget);
7826 * gtk_widget_set_default_direction:
7827 * @dir: the new default direction. This cannot be
7828 * %GTK_TEXT_DIR_NONE.
7830 * Sets the default reading direction for widgets where the
7831 * direction has not been explicitly set by gtk_widget_set_direction().
7834 gtk_widget_set_default_direction (GtkTextDirection dir)
7836 g_return_if_fail (dir == GTK_TEXT_DIR_RTL || dir == GTK_TEXT_DIR_LTR);
7838 if (dir != gtk_default_direction)
7840 GList *toplevels, *tmp_list;
7841 GtkTextDirection old_dir = gtk_default_direction;
7843 gtk_default_direction = dir;
7845 tmp_list = toplevels = gtk_window_list_toplevels ();
7846 g_list_foreach (toplevels, (GFunc)g_object_ref, NULL);
7850 gtk_widget_set_default_direction_recurse (tmp_list->data,
7851 GUINT_TO_POINTER (old_dir));
7852 g_object_unref (tmp_list->data);
7853 tmp_list = tmp_list->next;
7856 g_list_free (toplevels);
7861 * gtk_widget_get_default_direction:
7863 * Obtains the current default reading direction. See
7864 * gtk_widget_set_default_direction().
7866 * Return value: the current default direction.
7869 gtk_widget_get_default_direction (void)
7871 return gtk_default_direction;
7875 gtk_widget_dispose (GObject *object)
7877 GtkWidget *widget = GTK_WIDGET (object);
7880 gtk_container_remove (GTK_CONTAINER (widget->parent), widget);
7881 else if (GTK_WIDGET_VISIBLE (widget))
7882 gtk_widget_hide (widget);
7884 GTK_WIDGET_UNSET_FLAGS (widget, GTK_VISIBLE);
7885 if (GTK_WIDGET_REALIZED (widget))
7886 gtk_widget_unrealize (widget);
7888 G_OBJECT_CLASS (gtk_widget_parent_class)->dispose (object);
7892 gtk_widget_real_destroy (GtkObject *object)
7894 /* gtk_object_destroy() will already hold a refcount on object */
7895 GtkWidget *widget = GTK_WIDGET (object);
7897 /* wipe accelerator closures (keep order) */
7898 g_object_set_qdata (G_OBJECT (widget), quark_accel_path, NULL);
7899 g_object_set_qdata (G_OBJECT (widget), quark_accel_closures, NULL);
7901 /* Callers of add_mnemonic_label() should disconnect on ::destroy */
7902 g_object_set_qdata (G_OBJECT (widget), quark_mnemonic_labels, NULL);
7904 gtk_grab_remove (widget);
7906 g_object_unref (widget->style);
7907 widget->style = gtk_widget_get_default_style ();
7908 g_object_ref (widget->style);
7910 GTK_OBJECT_CLASS (gtk_widget_parent_class)->destroy (object);
7914 gtk_widget_finalize (GObject *object)
7916 GtkWidget *widget = GTK_WIDGET (object);
7917 GtkWidgetAuxInfo *aux_info;
7918 GtkAccessible *accessible;
7920 gtk_grab_remove (widget);
7922 g_object_unref (widget->style);
7923 widget->style = NULL;
7925 g_free (widget->name);
7927 aux_info =_gtk_widget_get_aux_info (widget, FALSE);
7929 gtk_widget_aux_info_destroy (aux_info);
7931 accessible = g_object_get_qdata (G_OBJECT (widget), quark_accessible_object);
7933 g_object_unref (accessible);
7935 G_OBJECT_CLASS (gtk_widget_parent_class)->finalize (object);
7938 /*****************************************
7939 * gtk_widget_real_map:
7944 *****************************************/
7947 gtk_widget_real_map (GtkWidget *widget)
7949 g_assert (GTK_WIDGET_REALIZED (widget));
7951 if (!GTK_WIDGET_MAPPED (widget))
7953 GTK_WIDGET_SET_FLAGS (widget, GTK_MAPPED);
7955 if (!GTK_WIDGET_NO_WINDOW (widget))
7956 gdk_window_show (widget->window);
7960 /*****************************************
7961 * gtk_widget_real_unmap:
7966 *****************************************/
7969 gtk_widget_real_unmap (GtkWidget *widget)
7971 if (GTK_WIDGET_MAPPED (widget))
7973 GTK_WIDGET_UNSET_FLAGS (widget, GTK_MAPPED);
7975 if (!GTK_WIDGET_NO_WINDOW (widget))
7976 gdk_window_hide (widget->window);
7980 /*****************************************
7981 * gtk_widget_real_realize:
7986 *****************************************/
7989 gtk_widget_real_realize (GtkWidget *widget)
7991 g_assert (GTK_WIDGET_NO_WINDOW (widget));
7993 GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
7996 widget->window = gtk_widget_get_parent_window (widget);
7997 g_object_ref (widget->window);
7999 widget->style = gtk_style_attach (widget->style, widget->window);
8002 /*****************************************
8003 * gtk_widget_real_unrealize:
8008 *****************************************/
8011 gtk_widget_real_unrealize (GtkWidget *widget)
8013 if (GTK_WIDGET_MAPPED (widget))
8014 gtk_widget_real_unmap (widget);
8016 GTK_WIDGET_UNSET_FLAGS (widget, GTK_MAPPED);
8018 /* printf ("unrealizing %s\n", g_type_name (G_TYPE_FROM_INSTANCE (widget)));
8021 /* We must do unrealize child widget BEFORE container widget.
8022 * gdk_window_destroy() destroys specified xwindow and its sub-xwindows.
8023 * So, unrealizing container widget bofore its children causes the problem
8024 * (for example, gdk_ic_destroy () with destroyed window causes crash. )
8027 if (GTK_IS_CONTAINER (widget))
8028 gtk_container_forall (GTK_CONTAINER (widget),
8029 (GtkCallback) gtk_widget_unrealize,
8032 gtk_style_detach (widget->style);
8033 if (!GTK_WIDGET_NO_WINDOW (widget))
8035 gdk_window_set_user_data (widget->window, NULL);
8036 gdk_window_destroy (widget->window);
8037 widget->window = NULL;
8041 g_object_unref (widget->window);
8042 widget->window = NULL;
8045 gtk_selection_remove_all (widget);
8047 GTK_WIDGET_UNSET_FLAGS (widget, GTK_REALIZED);
8051 gtk_widget_real_size_request (GtkWidget *widget,
8052 GtkRequisition *requisition)
8054 requisition->width = widget->requisition.width;
8055 requisition->height = widget->requisition.height;
8059 * _gtk_widget_peek_colormap:
8061 * Returns colormap currently pushed by gtk_widget_push_colormap, if any.
8063 * Return value: the currently pushed colormap, or %NULL if there is none.
8066 _gtk_widget_peek_colormap (void)
8069 return (GdkColormap*) colormap_stack->data;
8074 * _gtk_widget_set_pointer_window:
8075 * @widget: a #GtkWidget.
8076 * @pointer_window: the new pointer window.
8078 * Sets pointer window for @widget. Does not ref @pointer_window.
8079 * Actually stores it on the #GdkScreen, but you don't need to know that.
8082 _gtk_widget_set_pointer_window (GtkWidget *widget,
8083 GdkWindow *pointer_window)
8085 g_return_if_fail (GTK_IS_WIDGET (widget));
8087 if (GTK_WIDGET_REALIZED (widget))
8089 GdkScreen *screen = gdk_drawable_get_screen (widget->window);
8091 g_object_set_qdata (G_OBJECT (screen), quark_pointer_window,
8097 * _gtk_widget_get_pointer_window:
8098 * @widget: a #GtkWidget.
8100 * Return value: the pointer window set on the #GdkScreen @widget is attached
8104 _gtk_widget_get_pointer_window (GtkWidget *widget)
8106 g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
8108 if (GTK_WIDGET_REALIZED (widget))
8110 GdkScreen *screen = gdk_drawable_get_screen (widget->window);
8112 return g_object_get_qdata (G_OBJECT (screen), quark_pointer_window);
8119 synth_crossing (GtkWidget *widget,
8122 GdkCrossingMode mode,
8123 GdkNotifyType detail)
8127 event = gdk_event_new (type);
8129 event->crossing.window = g_object_ref (window);
8130 event->crossing.send_event = TRUE;
8131 event->crossing.subwindow = g_object_ref (window);
8132 event->crossing.time = GDK_CURRENT_TIME;
8133 event->crossing.x = event->crossing.y = 0;
8134 event->crossing.x_root = event->crossing.y_root = 0;
8135 event->crossing.mode = mode;
8136 event->crossing.detail = detail;
8137 event->crossing.focus = FALSE;
8138 event->crossing.state = 0;
8141 widget = gtk_get_event_widget (event);
8144 gtk_widget_event_internal (widget, event);
8146 gdk_event_free (event);
8150 * _gtk_widget_is_pointer_widget:
8151 * @widget: a #GtkWidget
8153 * Returns %TRUE if the pointer window belongs to @widget.
8157 _gtk_widget_is_pointer_widget (GtkWidget *widget)
8159 if (GTK_WIDGET_HAS_POINTER (widget))
8164 win = _gtk_widget_get_pointer_window (widget);
8167 gdk_window_get_user_data (win, &wid);
8177 * _gtk_widget_synthesize_crossing:
8178 * @from: the #GtkWidget the virtual pointer is leaving.
8179 * @to: the #GtkWidget the virtual pointer is moving to.
8180 * @mode: the #GdkCrossingMode to place on the synthesized events.
8182 * Generate crossing event(s) on widget state (sensitivity) or GTK+ grab change.
8184 * The real pointer window is the window that most recently received an enter notify
8185 * event. Windows that don't select for crossing events can't become the real
8186 * poiner window. The real pointer widget that owns the real pointer window. The
8187 * effective pointer window is the same as the real pointer window unless the real
8188 * pointer widget is either insensitive or there is a grab on a widget that is not
8189 * an ancestor of the real pointer widget (in which case the effective pointer
8190 * window should be the root window).
8192 * When the effective pointer window is the same as the real poiner window, we
8193 * receive crossing events from the windowing system. When the effective pointer
8194 * window changes to become different from the real pointer window we synthesize
8195 * crossing events, attempting to follow X protocol rules:
8197 * When the root window becomes the effective pointer window:
8198 * - leave notify on real pointer window, detail Ancestor
8199 * - leave notify on all of its ancestors, detail Virtual
8200 * - enter notify on root window, detail Inferior
8202 * When the root window ceases to be the effective pointer window:
8203 * - leave notify on root window, detail Inferior
8204 * - enter notify on all ancestors of real pointer window, detail Virtual
8205 * - enter notify on real pointer window, detail Ancestor
8208 _gtk_widget_synthesize_crossing (GtkWidget *from,
8210 GdkCrossingMode mode)
8212 GdkWindow *from_window = NULL, *to_window = NULL;
8214 g_return_if_fail (from != NULL || to != NULL);
8217 from_window = GTK_WIDGET_HAS_POINTER (from)
8218 ? _gtk_widget_get_pointer_window (from) : from->window;
8220 to_window = GTK_WIDGET_HAS_POINTER (to)
8221 ? _gtk_widget_get_pointer_window (to) : to->window;
8223 if (from_window == NULL && to_window == NULL)
8225 else if (from_window != NULL && to_window == NULL)
8227 GList *from_ancestors = NULL, *list;
8228 GdkWindow *from_ancestor = from_window;
8230 while (from_ancestor != NULL)
8232 if (from_ancestor != NULL)
8234 from_ancestor = gdk_window_get_parent (from_ancestor);
8235 if (from_ancestor == NULL)
8237 from_ancestors = g_list_prepend (from_ancestors, from_ancestor);
8241 synth_crossing (from, GDK_LEAVE_NOTIFY, from_window,
8242 mode, GDK_NOTIFY_ANCESTOR);
8243 for (list = g_list_last (from_ancestors); list; list = list->prev)
8245 synth_crossing (NULL, GDK_LEAVE_NOTIFY, (GdkWindow *) list->data,
8246 mode, GDK_NOTIFY_VIRTUAL);
8249 /* XXX: enter/inferior on root window? */
8251 g_list_free (from_ancestors);
8253 else if (from_window == NULL && to_window != NULL)
8255 GList *to_ancestors = NULL, *list;
8256 GdkWindow *to_ancestor = to_window;
8258 while (to_ancestor != NULL)
8260 if (to_ancestor != NULL)
8262 to_ancestor = gdk_window_get_parent (to_ancestor);
8263 if (to_ancestor == NULL)
8265 to_ancestors = g_list_prepend (to_ancestors, to_ancestor);
8269 /* XXX: leave/inferior on root window? */
8271 for (list = to_ancestors; list; list = list->next)
8273 synth_crossing (NULL, GDK_ENTER_NOTIFY, (GdkWindow *) list->data,
8274 mode, GDK_NOTIFY_VIRTUAL);
8276 synth_crossing (to, GDK_ENTER_NOTIFY, to_window,
8277 mode, GDK_NOTIFY_ANCESTOR);
8279 g_list_free (to_ancestors);
8281 else if (from_window == to_window)
8285 GList *from_ancestors = NULL, *to_ancestors = NULL, *list;
8286 GdkWindow *from_ancestor = from_window, *to_ancestor = to_window;
8288 while (from_ancestor != NULL || to_ancestor != NULL)
8290 if (from_ancestor != NULL)
8292 from_ancestor = gdk_window_get_parent (from_ancestor);
8293 if (from_ancestor == to_window)
8295 from_ancestors = g_list_prepend (from_ancestors, from_ancestor);
8297 if (to_ancestor != NULL)
8299 to_ancestor = gdk_window_get_parent (to_ancestor);
8300 if (to_ancestor == from_window)
8302 to_ancestors = g_list_prepend (to_ancestors, to_ancestor);
8305 if (to_ancestor == from_window)
8307 if (mode != GDK_CROSSING_GTK_UNGRAB)
8308 synth_crossing (from, GDK_LEAVE_NOTIFY, from_window,
8309 mode, GDK_NOTIFY_INFERIOR);
8310 for (list = to_ancestors; list; list = list->next)
8311 synth_crossing (NULL, GDK_ENTER_NOTIFY, (GdkWindow *) list->data,
8312 mode, GDK_NOTIFY_VIRTUAL);
8313 synth_crossing (to, GDK_ENTER_NOTIFY, to_window,
8314 mode, GDK_NOTIFY_ANCESTOR);
8316 else if (from_ancestor == to_window)
8318 synth_crossing (from, GDK_LEAVE_NOTIFY, from_window,
8319 mode, GDK_NOTIFY_ANCESTOR);
8320 for (list = g_list_last (from_ancestors); list; list = list->prev)
8322 synth_crossing (NULL, GDK_LEAVE_NOTIFY, (GdkWindow *) list->data,
8323 mode, GDK_NOTIFY_VIRTUAL);
8325 if (mode != GDK_CROSSING_GTK_GRAB)
8326 synth_crossing (to, GDK_ENTER_NOTIFY, to_window,
8327 mode, GDK_NOTIFY_INFERIOR);
8331 while (from_ancestors != NULL && to_ancestors != NULL
8332 && from_ancestors->data == to_ancestors->data)
8334 from_ancestors = g_list_delete_link (from_ancestors,
8336 to_ancestors = g_list_delete_link (to_ancestors, to_ancestors);
8339 synth_crossing (from, GDK_LEAVE_NOTIFY, from_window,
8340 mode, GDK_NOTIFY_NONLINEAR);
8342 for (list = g_list_last (from_ancestors); list; list = list->prev)
8344 synth_crossing (NULL, GDK_LEAVE_NOTIFY, (GdkWindow *) list->data,
8345 mode, GDK_NOTIFY_NONLINEAR_VIRTUAL);
8347 for (list = to_ancestors; list; list = list->next)
8349 synth_crossing (NULL, GDK_ENTER_NOTIFY, (GdkWindow *) list->data,
8350 mode, GDK_NOTIFY_NONLINEAR_VIRTUAL);
8352 synth_crossing (to, GDK_ENTER_NOTIFY, to_window,
8353 mode, GDK_NOTIFY_NONLINEAR);
8355 g_list_free (from_ancestors);
8356 g_list_free (to_ancestors);
8361 gtk_widget_propagate_state (GtkWidget *widget,
8364 guint8 old_state = GTK_WIDGET_STATE (widget);
8365 guint8 old_saved_state = GTK_WIDGET_SAVED_STATE (widget);
8367 /* don't call this function with state==GTK_STATE_INSENSITIVE,
8368 * parent_sensitive==TRUE on a sensitive widget
8372 if (data->parent_sensitive)
8373 GTK_WIDGET_SET_FLAGS (widget, GTK_PARENT_SENSITIVE);
8375 GTK_WIDGET_UNSET_FLAGS (widget, GTK_PARENT_SENSITIVE);
8377 if (GTK_WIDGET_IS_SENSITIVE (widget))
8379 if (data->state_restoration)
8380 GTK_WIDGET_STATE (widget) = GTK_WIDGET_SAVED_STATE (widget);
8382 GTK_WIDGET_STATE (widget) = data->state;
8386 if (!data->state_restoration)
8388 if (data->state != GTK_STATE_INSENSITIVE)
8389 GTK_WIDGET_SAVED_STATE (widget) = data->state;
8391 else if (GTK_WIDGET_STATE (widget) != GTK_STATE_INSENSITIVE)
8392 GTK_WIDGET_SAVED_STATE (widget) = GTK_WIDGET_STATE (widget);
8393 GTK_WIDGET_STATE (widget) = GTK_STATE_INSENSITIVE;
8396 if (gtk_widget_is_focus (widget) && !GTK_WIDGET_IS_SENSITIVE (widget))
8400 window = gtk_widget_get_toplevel (widget);
8401 if (window && GTK_WIDGET_TOPLEVEL (window))
8402 gtk_window_set_focus (GTK_WINDOW (window), NULL);
8405 if (old_state != GTK_WIDGET_STATE (widget) ||
8406 old_saved_state != GTK_WIDGET_SAVED_STATE (widget))
8408 g_object_ref (widget);
8410 if (!GTK_WIDGET_IS_SENSITIVE (widget) && GTK_WIDGET_HAS_GRAB (widget))
8411 gtk_grab_remove (widget);
8413 g_signal_emit (widget, widget_signals[STATE_CHANGED], 0, old_state);
8415 if (GTK_WIDGET_HAS_POINTER (widget) && !GTK_WIDGET_SHADOWED (widget))
8417 if (!GTK_WIDGET_IS_SENSITIVE (widget))
8418 _gtk_widget_synthesize_crossing (widget, NULL,
8419 GDK_CROSSING_STATE_CHANGED);
8420 else if (old_state == GTK_STATE_INSENSITIVE)
8421 _gtk_widget_synthesize_crossing (NULL, widget,
8422 GDK_CROSSING_STATE_CHANGED);
8425 if (GTK_IS_CONTAINER (widget))
8427 data->parent_sensitive = (GTK_WIDGET_IS_SENSITIVE (widget) != FALSE);
8428 if (data->use_forall)
8429 gtk_container_forall (GTK_CONTAINER (widget),
8430 (GtkCallback) gtk_widget_propagate_state,
8433 gtk_container_foreach (GTK_CONTAINER (widget),
8434 (GtkCallback) gtk_widget_propagate_state,
8437 g_object_unref (widget);
8442 * _gtk_widget_get_aux_info:
8443 * @widget: a #GtkWidget
8444 * @create: if %TRUE, create the structure if it doesn't exist
8446 * Get the #GtkWidgetAuxInfo structure for the widget.
8448 * Return value: the #GtkAuxInfo structure for the widget, or
8449 * %NULL if @create is %FALSE and one doesn't already exist.
8452 _gtk_widget_get_aux_info (GtkWidget *widget,
8455 GtkWidgetAuxInfo *aux_info;
8457 aux_info = g_object_get_qdata (G_OBJECT (widget), quark_aux_info);
8458 if (!aux_info && create)
8460 aux_info = g_slice_new (GtkWidgetAuxInfo);
8462 aux_info->width = -1;
8463 aux_info->height = -1;
8466 aux_info->x_set = FALSE;
8467 aux_info->y_set = FALSE;
8468 g_object_set_qdata (G_OBJECT (widget), quark_aux_info, aux_info);
8474 /*****************************************
8475 * gtk_widget_aux_info_destroy:
8480 *****************************************/
8483 gtk_widget_aux_info_destroy (GtkWidgetAuxInfo *aux_info)
8485 g_slice_free (GtkWidgetAuxInfo, aux_info);
8489 gtk_widget_shape_info_destroy (GtkWidgetShapeInfo *info)
8491 g_object_unref (info->shape_mask);
8492 g_slice_free (GtkWidgetShapeInfo, info);
8496 * gtk_widget_shape_combine_mask:
8497 * @widget: a #GtkWidget
8498 * @shape_mask: shape to be added, or %NULL to remove an existing shape
8499 * @offset_x: X position of shape mask with respect to @window
8500 * @offset_y: Y position of shape mask with respect to @window
8502 * Sets a shape for this widget's GDK window. This allows for
8503 * transparent windows etc., see gdk_window_shape_combine_mask()
8504 * for more information.
8507 gtk_widget_shape_combine_mask (GtkWidget *widget,
8508 GdkBitmap *shape_mask,
8512 GtkWidgetShapeInfo* shape_info;
8514 g_return_if_fail (GTK_IS_WIDGET (widget));
8515 /* set_shape doesn't work on widgets without gdk window */
8516 g_return_if_fail (!GTK_WIDGET_NO_WINDOW (widget));
8520 GTK_PRIVATE_UNSET_FLAG (widget, GTK_HAS_SHAPE_MASK);
8523 gdk_window_shape_combine_mask (widget->window, NULL, 0, 0);
8525 g_object_set_qdata (G_OBJECT (widget), quark_shape_info, NULL);
8529 GTK_PRIVATE_SET_FLAG (widget, GTK_HAS_SHAPE_MASK);
8531 shape_info = g_slice_new (GtkWidgetShapeInfo);
8532 g_object_set_qdata_full (G_OBJECT (widget), quark_shape_info, shape_info,
8533 (GDestroyNotify) gtk_widget_shape_info_destroy);
8535 shape_info->shape_mask = g_object_ref (shape_mask);
8536 shape_info->offset_x = offset_x;
8537 shape_info->offset_y = offset_y;
8539 /* set shape if widget has a gdk window already.
8540 * otherwise the shape is scheduled to be set by gtk_widget_realize().
8543 gdk_window_shape_combine_mask (widget->window, shape_mask,
8544 offset_x, offset_y);
8549 * gtk_widget_input_shape_combine_mask:
8550 * @widget: a #GtkWidget
8551 * @shape_mask: shape to be added, or %NULL to remove an existing shape
8552 * @offset_x: X position of shape mask with respect to @window
8553 * @offset_y: Y position of shape mask with respect to @window
8555 * Sets an input shape for this widget's GDK window. This allows for
8556 * windows which react to mouse click in a nonrectangular region, see
8557 * gdk_window_input_shape_combine_mask() for more information.
8562 gtk_widget_input_shape_combine_mask (GtkWidget *widget,
8563 GdkBitmap *shape_mask,
8567 GtkWidgetShapeInfo* shape_info;
8569 g_return_if_fail (GTK_IS_WIDGET (widget));
8570 /* set_shape doesn't work on widgets without gdk window */
8571 g_return_if_fail (!GTK_WIDGET_NO_WINDOW (widget));
8576 gdk_window_input_shape_combine_mask (widget->window, NULL, 0, 0);
8578 g_object_set_qdata (G_OBJECT (widget), quark_input_shape_info, NULL);
8582 shape_info = g_slice_new (GtkWidgetShapeInfo);
8583 g_object_set_qdata_full (G_OBJECT (widget), quark_input_shape_info,
8585 (GDestroyNotify) gtk_widget_shape_info_destroy);
8587 shape_info->shape_mask = g_object_ref (shape_mask);
8588 shape_info->offset_x = offset_x;
8589 shape_info->offset_y = offset_y;
8591 /* set shape if widget has a gdk window already.
8592 * otherwise the shape is scheduled to be set by gtk_widget_realize().
8595 gdk_window_input_shape_combine_mask (widget->window, shape_mask,
8596 offset_x, offset_y);
8602 gtk_reset_shapes_recurse (GtkWidget *widget,
8608 gdk_window_get_user_data (window, &data);
8612 gdk_window_shape_combine_mask (window, NULL, 0, 0);
8613 for (list = gdk_window_peek_children (window); list; list = list->next)
8614 gtk_reset_shapes_recurse (widget, list->data);
8618 * gtk_widget_reset_shapes:
8619 * @widget: a #GtkWidget
8621 * Recursively resets the shape on this widget and its descendants.
8624 gtk_widget_reset_shapes (GtkWidget *widget)
8626 g_return_if_fail (GTK_IS_WIDGET (widget));
8627 g_return_if_fail (GTK_WIDGET_REALIZED (widget));
8629 if (!GTK_WIDGET_HAS_SHAPE_MASK (widget))
8630 gtk_reset_shapes_recurse (widget, widget->window);
8635 * @widget: a #GtkWidget
8637 * Adds a reference to a widget. This function is exactly the same
8638 * as calling g_object_ref(), and exists mostly for historical
8639 * reasons. It can still be convenient to avoid casting a widget
8640 * to a #GObject, it saves a small amount of typing.
8642 * Return value: the widget that was referenced
8644 * Deprecated: 2.12: Use g_object_ref() instead.
8647 gtk_widget_ref (GtkWidget *widget)
8649 g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
8651 return (GtkWidget*) g_object_ref ((GObject*) widget);
8656 * @widget: a #GtkWidget
8658 * Inverse of gtk_widget_ref(). Equivalent to g_object_unref().
8660 * Deprecated: 2.12: Use g_object_unref() instead.
8663 gtk_widget_unref (GtkWidget *widget)
8665 g_return_if_fail (GTK_IS_WIDGET (widget));
8667 g_object_unref ((GObject*) widget);
8671 * gtk_widget_get_snapshot:
8672 * @widget: a #GtkWidget
8673 * @clip_rect: a #GdkRectangle or %NULL
8675 * Create a #GdkPixmap of the contents of the widget and its children.
8677 * Works even if the widget is obscured. The depth and visual of the
8678 * resulting pixmap is dependent on the widget being snapshot and likely
8679 * differs from those of a target widget displaying the pixmap.
8680 * The function gdk_pixbuf_get_from_drawable() can be used to convert
8681 * the pixmap to a visual independant representation.
8683 * The snapshot area used by this function is the @widget's allocation plus
8684 * any extra space occupied by additional windows belonging to this widget
8685 * (such as the arrows of a spin button).
8686 * Thus, the resulting snapshot pixmap is possibly larger than the allocation.
8688 * If @clip_rect is non-%NULL, the resulting pixmap is shrunken to
8689 * match the specified clip_rect. The (x,y) coordinates of @clip_rect are
8690 * interpreted widget relative. If width or height of @clip_rect are 0 or
8691 * negative, the width or height of the resulting pixmap will be shrunken
8692 * by the respective amount.
8693 * For instance a @clip_rect <literal>{ +5, +5, -10, -10 }</literal> will
8694 * chop off 5 pixels at each side of the snapshot pixmap.
8695 * If non-%NULL, @clip_rect will contain the exact widget-relative snapshot
8696 * coordinates upon return. A @clip_rect of <literal>{ -1, -1, 0, 0 }</literal>
8697 * can be used to preserve the auto-grown snapshot area and use @clip_rect
8698 * as a pure output parameter.
8700 * The returned pixmap can be %NULL, if the resulting @clip_area was empty.
8702 * Return value: #GdkPixmap snapshot of the widget
8707 gtk_widget_get_snapshot (GtkWidget *widget,
8708 GdkRectangle *clip_rect)
8710 int x, y, width, height;
8711 GdkWindow *parent_window = NULL;
8713 GList *windows = NULL, *list;
8715 g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
8716 if (!GTK_WIDGET_VISIBLE (widget))
8719 /* the widget (and parent_window) must be realized to be drawable */
8720 if (widget->parent && !GTK_WIDGET_REALIZED (widget->parent))
8721 gtk_widget_realize (widget->parent);
8722 if (!GTK_WIDGET_REALIZED (widget))
8723 gtk_widget_realize (widget);
8725 /* determine snapshot rectangle */
8726 x = widget->allocation.x;
8727 y = widget->allocation.y;
8728 width = widget->allocation.width;
8729 height = widget->allocation.height;
8731 if (widget->parent && !GTK_WIDGET_NO_WINDOW (widget))
8733 /* grow snapshot rectangle to cover all widget windows */
8734 parent_window = gtk_widget_get_parent_window (widget);
8735 for (list = gdk_window_peek_children (parent_window); list; list = list->next)
8737 GdkWindow *subwin = list->data;
8740 gdk_window_get_user_data (subwin, &windata);
8741 if (windata != widget)
8743 windows = g_list_prepend (windows, subwin);
8744 gdk_window_get_position (subwin, &wx, &wy);
8745 gdk_drawable_get_size (subwin, &ww, &wh);
8746 /* grow snapshot rectangle by extra widget sub window */
8757 if (x + width < wx + ww)
8758 width += wx + ww - (x + width);
8759 if (y + height < wy + wh)
8760 height += wy + wh - (y + height);
8763 else if (!widget->parent)
8764 x = y = 0; /* toplevel */
8766 /* at this point, (x,y,width,height) is the parent_window relative
8767 * snapshot area covering all of widget's windows.
8770 /* shrink snapshot size by clip_rectangle */
8773 GdkRectangle snap = { x, y, width, height }, clip = *clip_rect;
8774 clip.x = clip.x < 0 ? x : clip.x;
8775 clip.y = clip.y < 0 ? y : clip.y;
8776 clip.width = clip.width <= 0 ? MAX (0, width + clip.width) : clip.width;
8777 clip.height = clip.height <= 0 ? MAX (0, height + clip.height) : clip.height;
8780 /* offset clip_rect, so it's parent_window relative */
8781 if (clip_rect->x >= 0)
8782 clip.x += widget->allocation.x;
8783 if (clip_rect->y >= 0)
8784 clip.y += widget->allocation.y;
8786 if (!gdk_rectangle_intersect (&snap, &clip, &snap))
8788 g_list_free (windows);
8789 clip_rect->width = clip_rect->height = 0;
8790 return NULL; /* empty snapshot area */
8795 height = snap.height;
8798 /* render snapshot */
8799 pixmap = gdk_pixmap_new (widget->window, width, height, gdk_drawable_get_depth (widget->window));
8800 for (list = windows; list; list = list->next) /* !NO_WINDOW widgets */
8802 GdkWindow *subwin = list->data;
8804 gdk_window_get_position (subwin, &wx, &wy);
8805 gdk_window_redirect_to_drawable (subwin, pixmap, MAX (0, x - wx), MAX (0, y - wy),
8806 MAX (0, wx - x), MAX (0, wy - y), width, height);
8807 gdk_window_invalidate_rect (subwin, NULL, TRUE);
8809 if (!windows) /* NO_WINDOW || toplevel => parent_window == NULL || parent_window == widget->window */
8811 gdk_window_redirect_to_drawable (widget->window, pixmap, x, y, 0, 0, width, height);
8812 gdk_window_invalidate_rect (widget->window, NULL, TRUE);
8814 gtk_widget_queue_draw (widget);
8816 gdk_window_process_updates (parent_window, TRUE);
8817 for (list = windows; list; list = list->next)
8818 gdk_window_process_updates (list->data, TRUE);
8819 gdk_window_process_updates (widget->window, TRUE);
8820 for (list = windows; list; list = list->next)
8821 gdk_window_remove_redirection (list->data);
8822 if (!windows) /* NO_WINDOW || toplevel */
8823 gdk_window_remove_redirection (widget->window);
8824 g_list_free (windows);
8826 /* return pixmap and snapshot rectangle coordinates */
8831 clip_rect->width = width;
8832 clip_rect->height = height;
8835 /* offset clip_rect from parent_window so it's widget relative */
8836 clip_rect->x -= widget->allocation.x;
8837 clip_rect->y -= widget->allocation.y;
8840 g_printerr ("gtk_widget_get_snapshot: %s (%d,%d, %dx%d)\n",
8841 G_OBJECT_TYPE_NAME (widget),
8842 clip_rect->x, clip_rect->y, clip_rect->width, clip_rect->height);
8851 * gtk_widget_class_install_style_property_parser:
8852 * @klass: a #GtkWidgetClass
8853 * @pspec: the #GParamSpec for the style property
8854 * @parser: the parser for the style property
8856 * Installs a style property on a widget class.
8859 gtk_widget_class_install_style_property_parser (GtkWidgetClass *klass,
8861 GtkRcPropertyParser parser)
8863 g_return_if_fail (GTK_IS_WIDGET_CLASS (klass));
8864 g_return_if_fail (G_IS_PARAM_SPEC (pspec));
8865 g_return_if_fail (pspec->flags & G_PARAM_READABLE);
8866 g_return_if_fail (!(pspec->flags & (G_PARAM_CONSTRUCT_ONLY | G_PARAM_CONSTRUCT)));
8868 if (g_param_spec_pool_lookup (style_property_spec_pool, pspec->name, G_OBJECT_CLASS_TYPE (klass), FALSE))
8870 g_warning (G_STRLOC ": class `%s' already contains a style property named `%s'",
8871 G_OBJECT_CLASS_NAME (klass),
8876 g_param_spec_ref_sink (pspec);
8877 g_param_spec_set_qdata (pspec, quark_property_parser, (gpointer) parser);
8878 g_param_spec_pool_insert (style_property_spec_pool, pspec, G_OBJECT_CLASS_TYPE (klass));
8882 * gtk_widget_class_install_style_property:
8883 * @klass: a #GtkWidgetClass
8884 * @pspec: the #GParamSpec for the property
8886 * Installs a style property on a widget class. The parser for the
8887 * style property is determined by the value type of @pspec.
8890 gtk_widget_class_install_style_property (GtkWidgetClass *klass,
8893 GtkRcPropertyParser parser;
8895 g_return_if_fail (GTK_IS_WIDGET_CLASS (klass));
8896 g_return_if_fail (G_IS_PARAM_SPEC (pspec));
8898 parser = _gtk_rc_property_parser_from_type (G_PARAM_SPEC_VALUE_TYPE (pspec));
8900 gtk_widget_class_install_style_property_parser (klass, pspec, parser);
8904 * gtk_widget_class_find_style_property:
8905 * @klass: a #GtkWidgetClass
8906 * @property_name: the name of the style property to find
8907 * @returns: the #GParamSpec of the style property or %NULL if @class has no
8908 * style property with that name.
8910 * Finds a style property of a widget class by name.
8915 gtk_widget_class_find_style_property (GtkWidgetClass *klass,
8916 const gchar *property_name)
8918 g_return_val_if_fail (property_name != NULL, NULL);
8920 return g_param_spec_pool_lookup (style_property_spec_pool,
8922 G_OBJECT_CLASS_TYPE (klass),
8927 * gtk_widget_class_list_style_properties:
8928 * @klass: a #GtkWidgetClass
8929 * @n_properties: location to return the number of style properties found
8930 * @returns: an newly allocated array of #GParamSpec*. The array must
8931 * be freed with g_free().
8933 * Returns all style properties of a widget class.
8938 gtk_widget_class_list_style_properties (GtkWidgetClass *klass,
8939 guint *n_properties)
8941 GParamSpec **pspecs;
8944 pspecs = g_param_spec_pool_list (style_property_spec_pool,
8945 G_OBJECT_CLASS_TYPE (klass),
8954 * gtk_widget_style_get_property:
8955 * @widget: a #GtkWidget
8956 * @property_name: the name of a style property
8957 * @value: location to return the property value
8959 * Gets the value of a style property of @widget.
8962 gtk_widget_style_get_property (GtkWidget *widget,
8963 const gchar *property_name,
8968 g_return_if_fail (GTK_IS_WIDGET (widget));
8969 g_return_if_fail (property_name != NULL);
8970 g_return_if_fail (G_IS_VALUE (value));
8972 g_object_ref (widget);
8973 pspec = g_param_spec_pool_lookup (style_property_spec_pool,
8975 G_OBJECT_TYPE (widget),
8978 g_warning ("%s: widget class `%s' has no property named `%s'",
8980 G_OBJECT_TYPE_NAME (widget),
8984 const GValue *peek_value;
8986 peek_value = _gtk_style_peek_property_value (widget->style,
8987 G_OBJECT_TYPE (widget),
8989 (GtkRcPropertyParser) g_param_spec_get_qdata (pspec, quark_property_parser));
8991 /* auto-conversion of the caller's value type
8993 if (G_VALUE_TYPE (value) == G_PARAM_SPEC_VALUE_TYPE (pspec))
8994 g_value_copy (peek_value, value);
8995 else if (g_value_type_transformable (G_PARAM_SPEC_VALUE_TYPE (pspec), G_VALUE_TYPE (value)))
8996 g_value_transform (peek_value, value);
8998 g_warning ("can't retrieve style property `%s' of type `%s' as value of type `%s'",
9000 g_type_name (G_PARAM_SPEC_VALUE_TYPE (pspec)),
9001 G_VALUE_TYPE_NAME (value));
9003 g_object_unref (widget);
9007 * gtk_widget_style_get_valist:
9008 * @widget: a #GtkWidget
9009 * @first_property_name: the name of the first property to get
9010 * @var_args: a <type>va_list</type> of pairs of property names and
9011 * locations to return the property values, starting with the location
9012 * for @first_property_name.
9014 * Non-vararg variant of gtk_widget_style_get(). Used primarily by language
9018 gtk_widget_style_get_valist (GtkWidget *widget,
9019 const gchar *first_property_name,
9024 g_return_if_fail (GTK_IS_WIDGET (widget));
9026 g_object_ref (widget);
9028 name = first_property_name;
9031 const GValue *peek_value;
9035 pspec = g_param_spec_pool_lookup (style_property_spec_pool,
9037 G_OBJECT_TYPE (widget),
9041 g_warning ("%s: widget class `%s' has no property named `%s'",
9043 G_OBJECT_TYPE_NAME (widget),
9047 /* style pspecs are always readable so we can spare that check here */
9049 peek_value = _gtk_style_peek_property_value (widget->style,
9050 G_OBJECT_TYPE (widget),
9052 (GtkRcPropertyParser) g_param_spec_get_qdata (pspec, quark_property_parser));
9053 G_VALUE_LCOPY (peek_value, var_args, 0, &error);
9056 g_warning ("%s: %s", G_STRLOC, error);
9061 name = va_arg (var_args, gchar*);
9064 g_object_unref (widget);
9068 * gtk_widget_style_get:
9069 * @widget: a #GtkWidget
9070 * @first_property_name: the name of the first property to get
9071 * @Varargs: pairs of property names and locations to
9072 * return the property values, starting with the location for
9073 * @first_property_name, terminated by %NULL.
9075 * Gets the values of a multiple style properties of @widget.
9078 gtk_widget_style_get (GtkWidget *widget,
9079 const gchar *first_property_name,
9084 g_return_if_fail (GTK_IS_WIDGET (widget));
9086 va_start (var_args, first_property_name);
9087 gtk_widget_style_get_valist (widget, first_property_name, var_args);
9093 * @widget: a #GtkWidget
9094 * @path_length: location to store length of the path, or %NULL
9095 * @path: location to store allocated path string, or %NULL
9096 * @path_reversed: location to store allocated reverse path string, or %NULL
9098 * Obtains the full path to @widget. The path is simply the name of a
9099 * widget and all its parents in the container hierarchy, separated by
9100 * periods. The name of a widget comes from
9101 * gtk_widget_get_name(). Paths are used to apply styles to a widget
9102 * in gtkrc configuration files. Widget names are the type of the
9103 * widget by default (e.g. "GtkButton") or can be set to an
9104 * application-specific value with gtk_widget_set_name(). By setting
9105 * the name of a widget, you allow users or theme authors to apply
9106 * styles to that specific widget in their gtkrc
9107 * file. @path_reversed_p fills in the path in reverse order,
9108 * i.e. starting with @widget's name instead of starting with the name
9109 * of @widget's outermost ancestor.
9112 gtk_widget_path (GtkWidget *widget,
9115 gchar **path_reversed)
9117 static gchar *rev_path = NULL;
9118 static guint tmp_path_len = 0;
9121 g_return_if_fail (GTK_IS_WIDGET (widget));
9126 const gchar *string;
9131 string = gtk_widget_get_name (widget);
9132 l = strlen (string);
9133 while (tmp_path_len <= len + l + 1)
9135 tmp_path_len += INIT_PATH_SIZE;
9136 rev_path = g_realloc (rev_path, tmp_path_len);
9144 widget = widget->parent;
9147 rev_path[len++] = '.';
9149 rev_path[len++] = 0;
9154 *path_length = len - 1;
9156 *path_reversed = g_strdup (rev_path);
9159 *path = g_strdup (rev_path);
9160 g_strreverse (*path);
9165 * gtk_widget_class_path:
9166 * @widget: a #GtkWidget
9167 * @path_length: location to store the length of the class path, or %NULL
9168 * @path: location to store the class path as an allocated string, or %NULL
9169 * @path_reversed: location to store the reverse class path as an allocated
9172 * Same as gtk_widget_path(), but always uses the name of a widget's type,
9173 * never uses a custom name set with gtk_widget_set_name().
9177 gtk_widget_class_path (GtkWidget *widget,
9180 gchar **path_reversed)
9182 static gchar *rev_path = NULL;
9183 static guint tmp_path_len = 0;
9186 g_return_if_fail (GTK_IS_WIDGET (widget));
9191 const gchar *string;
9196 string = g_type_name (GTK_WIDGET_TYPE (widget));
9197 l = strlen (string);
9198 while (tmp_path_len <= len + l + 1)
9200 tmp_path_len += INIT_PATH_SIZE;
9201 rev_path = g_realloc (rev_path, tmp_path_len);
9209 widget = widget->parent;
9212 rev_path[len++] = '.';
9214 rev_path[len++] = 0;
9219 *path_length = len - 1;
9221 *path_reversed = g_strdup (rev_path);
9224 *path = g_strdup (rev_path);
9225 g_strreverse (*path);
9230 * gtk_requisition_copy:
9231 * @requisition: a #GtkRequisition
9233 * Copies a #GtkRequisition.
9235 * Returns: a copy of @requisition
9238 gtk_requisition_copy (const GtkRequisition *requisition)
9240 return (GtkRequisition *)g_memdup (requisition, sizeof (GtkRequisition));
9244 * gtk_requisition_free:
9245 * @requisition: a #GtkRequisition
9247 * Frees a #GtkRequisition.
9250 gtk_requisition_free (GtkRequisition *requisition)
9252 g_free (requisition);
9256 gtk_requisition_get_type (void)
9258 static GType our_type = 0;
9261 our_type = g_boxed_type_register_static (I_("GtkRequisition"),
9262 (GBoxedCopyFunc) gtk_requisition_copy,
9263 (GBoxedFreeFunc) gtk_requisition_free);
9269 * gtk_widget_get_accessible:
9270 * @widget: a #GtkWidget
9272 * Returns the accessible object that describes the widget to an
9273 * assistive technology.
9275 * If no accessibility library is loaded (i.e. no ATK implementation library is
9276 * loaded via <envar>GTK_MODULES</envar> or via another application library,
9277 * such as libgnome), then this #AtkObject instance may be a no-op. Likewise,
9278 * if no class-specific #AtkObject implementation is available for the widget
9279 * instance in question, it will inherit an #AtkObject implementation from the
9280 * first ancestor class for which such an implementation is defined.
9282 * The documentation of the <ulink url="http://developer.gnome.org/doc/API/2.0/atk/index.html">ATK</ulink>
9283 * library contains more information about accessible objects and their uses.
9285 * Returns: the #AtkObject associated with @widget
9288 gtk_widget_get_accessible (GtkWidget *widget)
9290 GtkWidgetClass *klass;
9292 g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
9294 klass = GTK_WIDGET_GET_CLASS (widget);
9296 g_return_val_if_fail (klass->get_accessible != NULL, NULL);
9298 return klass->get_accessible (widget);
9302 gtk_widget_real_get_accessible (GtkWidget *widget)
9304 AtkObject* accessible;
9306 accessible = g_object_get_qdata (G_OBJECT (widget),
9307 quark_accessible_object);
9310 AtkObjectFactory *factory;
9311 AtkRegistry *default_registry;
9313 default_registry = atk_get_default_registry ();
9314 factory = atk_registry_get_factory (default_registry,
9315 G_TYPE_FROM_INSTANCE (widget));
9317 atk_object_factory_create_accessible (factory,
9319 g_object_set_qdata (G_OBJECT (widget),
9320 quark_accessible_object,
9327 * Initialize a AtkImplementorIface instance's virtual pointers as
9328 * appropriate to this implementor's class (GtkWidget).
9331 gtk_widget_accessible_interface_init (AtkImplementorIface *iface)
9333 iface->ref_accessible = gtk_widget_ref_accessible;
9337 gtk_widget_ref_accessible (AtkImplementor *implementor)
9339 AtkObject *accessible;
9341 accessible = gtk_widget_get_accessible (GTK_WIDGET (implementor));
9343 g_object_ref (accessible);
9348 * GtkBuildable implementation
9350 static GQuark quark_builder_has_default = 0;
9351 static GQuark quark_builder_has_focus = 0;
9352 static GQuark quark_builder_atk_relations = 0;
9355 gtk_widget_buildable_interface_init (GtkBuildableIface *iface)
9357 quark_builder_has_default = g_quark_from_static_string ("gtk-builder-has-default");
9358 quark_builder_has_focus = g_quark_from_static_string ("gtk-builder-has-focus");
9359 quark_builder_atk_relations = g_quark_from_static_string ("gtk-builder-atk-relations");
9361 iface->set_name = gtk_widget_buildable_set_name;
9362 iface->get_name = gtk_widget_buildable_get_name;
9363 iface->get_internal_child = gtk_widget_buildable_get_internal_child;
9364 iface->set_buildable_property = gtk_widget_buildable_set_buildable_property;
9365 iface->parser_finished = gtk_widget_buildable_parser_finished;
9366 iface->custom_tag_start = gtk_widget_buildable_custom_tag_start;
9367 iface->custom_finished = gtk_widget_buildable_custom_finished;
9371 gtk_widget_buildable_set_name (GtkBuildable *buildable,
9374 gtk_widget_set_name (GTK_WIDGET (buildable), name);
9377 static const gchar *
9378 gtk_widget_buildable_get_name (GtkBuildable *buildable)
9380 return gtk_widget_get_name (GTK_WIDGET (buildable));
9384 gtk_widget_buildable_get_internal_child (GtkBuildable *buildable,
9385 GtkBuilder *builder,
9386 const gchar *childname)
9388 if (strcmp (childname, "accessible") == 0)
9389 return G_OBJECT (gtk_widget_get_accessible (GTK_WIDGET (buildable)));
9395 gtk_widget_buildable_set_buildable_property (GtkBuildable *buildable,
9396 GtkBuilder *builder,
9398 const GValue *value)
9400 if (strcmp (name, "has-default") == 0 && g_value_get_boolean (value))
9401 g_object_set_qdata (G_OBJECT (buildable), quark_builder_has_default,
9402 GINT_TO_POINTER (TRUE));
9403 else if (strcmp (name, "has-focus") == 0 && g_value_get_boolean (value))
9404 g_object_set_qdata (G_OBJECT (buildable), quark_builder_has_focus,
9405 GINT_TO_POINTER (TRUE));
9407 g_object_set_property (G_OBJECT (buildable), name, value);
9421 free_action (AtkActionData *data, gpointer user_data)
9423 g_free (data->action_name);
9424 g_free (data->description);
9425 g_slice_free (AtkActionData, data);
9429 free_relation (AtkRelationData *data, gpointer user_data)
9431 g_free (data->target);
9432 g_free (data->type);
9433 g_slice_free (AtkRelationData, data);
9437 gtk_widget_buildable_parser_finished (GtkBuildable *buildable,
9438 GtkBuilder *builder)
9440 GSList *atk_relations;
9442 if (g_object_get_qdata (G_OBJECT (buildable), quark_builder_has_default))
9443 gtk_widget_grab_default (GTK_WIDGET (buildable));
9444 if (g_object_get_qdata (G_OBJECT (buildable), quark_builder_has_focus))
9445 gtk_widget_grab_focus (GTK_WIDGET (buildable));
9447 atk_relations = g_object_get_qdata (G_OBJECT (buildable),
9448 quark_builder_atk_relations);
9451 AtkObject *accessible;
9452 AtkRelationSet *relation_set;
9455 AtkRelationType relation_type;
9456 AtkObject *target_accessible;
9458 accessible = gtk_widget_get_accessible (GTK_WIDGET (buildable));
9459 relation_set = atk_object_ref_relation_set (accessible);
9461 for (l = atk_relations; l; l = l->next)
9463 AtkRelationData *relation = (AtkRelationData*)l->data;
9465 target = gtk_builder_get_object (builder, relation->target);
9468 g_warning ("Target object %s in <relation> does not exist",
9472 target_accessible = gtk_widget_get_accessible (GTK_WIDGET (target));
9473 g_assert (target_accessible != NULL);
9475 relation_type = atk_relation_type_for_name (relation->type);
9476 if (relation_type == ATK_RELATION_NULL)
9478 g_warning ("<relation> type %s not found",
9482 atk_relation_set_add_relation_by_type (relation_set, relation_type,
9485 g_object_unref (relation_set);
9487 g_slist_foreach (atk_relations, (GFunc)free_relation, NULL);
9488 g_slist_free (atk_relations);
9489 g_object_set_qdata (G_OBJECT (buildable), quark_builder_atk_relations,
9498 } AccessibilitySubParserData;
9501 accessibility_start_element (GMarkupParseContext *context,
9502 const gchar *element_name,
9503 const gchar **names,
9504 const gchar **values,
9508 AccessibilitySubParserData *data = (AccessibilitySubParserData*)user_data;
9510 gint line_number, char_number;
9512 if (strcmp (element_name, "relation") == 0)
9514 gchar *target = NULL;
9516 AtkRelationData *relation;
9518 for (i = 0; names[i]; i++)
9520 if (strcmp (names[i], "target") == 0)
9521 target = g_strdup (values[i]);
9522 else if (strcmp (names[i], "type") == 0)
9523 type = g_strdup (values[i]);
9526 g_markup_parse_context_get_position (context,
9531 GTK_BUILDER_ERROR_INVALID_ATTRIBUTE,
9532 "%s:%d:%d '%s' is not a valid attribute of <%s>",
9534 line_number, char_number, names[i], "relation");
9541 if (!target || !type)
9543 g_markup_parse_context_get_position (context,
9548 GTK_BUILDER_ERROR_MISSING_ATTRIBUTE,
9549 "%s:%d:%d <%s> requires attribute \"%s\"",
9551 line_number, char_number, "relation",
9552 type ? "target" : "type");
9558 relation = g_slice_new (AtkRelationData);
9559 relation->target = target;
9560 relation->type = type;
9562 data->relations = g_slist_prepend (data->relations, relation);
9564 else if (strcmp (element_name, "action") == 0)
9566 gchar *action_name = NULL;
9567 gchar *description = NULL;
9568 AtkActionData *action;
9570 for (i = 0; names[i]; i++)
9572 if (strcmp (names[i], "action_name") == 0)
9573 action_name = g_strdup (values[i]);
9574 else if (strcmp (names[i], "description") == 0)
9575 description = g_strdup (values[i]);
9578 g_markup_parse_context_get_position (context,
9583 GTK_BUILDER_ERROR_INVALID_ATTRIBUTE,
9584 "%s:%d:%d '%s' is not a valid attribute of <%s>",
9586 line_number, char_number, names[i], "action");
9587 g_free (action_name);
9588 g_free (description);
9593 if (!action_name || !description)
9595 g_markup_parse_context_get_position (context,
9600 GTK_BUILDER_ERROR_MISSING_ATTRIBUTE,
9601 "%s:%d:%d <%s> requires attribute \"%s\"",
9603 line_number, char_number, "action",
9604 description ? "action_name" : "description");
9605 g_free (action_name);
9606 g_free (description);
9610 action = g_slice_new (AtkActionData);
9611 action->action_name = action_name;
9612 action->description = description;
9614 data->actions = g_slist_prepend (data->actions, action);
9616 else if (strcmp (element_name, "accessibility") == 0)
9619 g_warning ("Unsupported tag for GtkWidget: %s\n", element_name);
9622 static const GMarkupParser accessibility_parser =
9624 accessibility_start_element,
9632 } AccelGroupParserData;
9635 accel_group_start_element (GMarkupParseContext *context,
9636 const gchar *element_name,
9637 const gchar **names,
9638 const gchar **values,
9644 guint modifiers = 0;
9645 gchar *signal = NULL;
9646 AccelGroupParserData *parser_data = (AccelGroupParserData*)user_data;
9648 for (i = 0; names[i]; i++)
9650 if (strcmp (names[i], "key") == 0)
9651 key = gdk_keyval_from_name (values[i]);
9652 else if (strcmp (names[i], "modifiers") == 0)
9654 if (!_gtk_builder_flags_from_string (GDK_TYPE_MODIFIER_TYPE,
9660 else if (strcmp (names[i], "signal") == 0)
9661 signal = g_strdup (values[i]);
9664 if (key == 0 || signal == NULL)
9666 g_warning ("<accelerator> requires key and signal attributes");
9669 parser_data->key = key;
9670 parser_data->modifiers = modifiers;
9671 parser_data->signal = signal;
9674 static const GMarkupParser accel_group_parser =
9676 accel_group_start_element,
9680 gtk_widget_buildable_custom_tag_start (GtkBuildable *buildable,
9681 GtkBuilder *builder,
9683 const gchar *tagname,
9684 GMarkupParser *parser,
9687 g_assert (buildable);
9689 if (strcmp (tagname, "accelerator") == 0)
9691 AccelGroupParserData *parser_data;
9693 parser_data = g_slice_new0 (AccelGroupParserData);
9694 parser_data->object = g_object_ref (buildable);
9695 *parser = accel_group_parser;
9696 *data = parser_data;
9699 if (strcmp (tagname, "accessibility") == 0)
9701 AccessibilitySubParserData *parser_data;
9703 parser_data = g_slice_new0 (AccessibilitySubParserData);
9704 *parser = accessibility_parser;
9705 *data = parser_data;
9712 gtk_widget_buildable_custom_finished (GtkBuildable *buildable,
9713 GtkBuilder *builder,
9715 const gchar *tagname,
9718 AccelGroupParserData *accel_data;
9719 AccessibilitySubParserData *a11y_data;
9720 GtkWidget *toplevel;
9721 GSList *accel_groups;
9722 GtkAccelGroup *accel_group;
9724 if (strcmp (tagname, "accelerator") == 0)
9726 accel_data = (AccelGroupParserData*)user_data;
9727 g_assert (accel_data->object);
9729 toplevel = gtk_widget_get_toplevel (GTK_WIDGET (accel_data->object));
9730 accel_groups = gtk_accel_groups_from_object (G_OBJECT (toplevel));
9731 if (g_slist_length (accel_groups) == 0)
9733 accel_group = gtk_accel_group_new ();
9734 gtk_window_add_accel_group (GTK_WINDOW (toplevel), accel_group);
9738 g_assert (g_slist_length (accel_groups) == 1);
9739 accel_group = g_slist_nth_data (accel_groups, 0);
9741 gtk_widget_add_accelerator (GTK_WIDGET (accel_data->object),
9745 accel_data->modifiers,
9747 g_object_unref (accel_data->object);
9748 g_free (accel_data->signal);
9749 g_slice_free (AccelGroupParserData, accel_data);
9751 else if (strcmp (tagname, "accessibility") == 0)
9753 a11y_data = (AccessibilitySubParserData*)user_data;
9755 if (a11y_data->actions)
9757 AtkObject *accessible;
9762 accessible = gtk_widget_get_accessible (GTK_WIDGET (buildable));
9764 action = ATK_ACTION (accessible);
9765 n_actions = atk_action_get_n_actions (action);
9767 for (l = a11y_data->actions; l; l = l->next)
9769 AtkActionData *action_data = (AtkActionData*)l->data;
9771 for (i = 0; i < n_actions; i++)
9772 if (strcmp (atk_action_get_name (action, i),
9773 action_data->action_name) == 0)
9777 atk_action_set_description (action, i,
9778 action_data->description);
9781 g_slist_foreach (a11y_data->actions, (GFunc)free_action, NULL);
9782 g_slist_free (a11y_data->actions);
9785 if (a11y_data->relations)
9786 g_object_set_qdata (G_OBJECT (buildable), quark_builder_atk_relations,
9787 a11y_data->relations);
9789 g_slice_free (AccessibilitySubParserData, a11y_data);
9796 * gtk_widget_get_clipboard:
9797 * @widget: a #GtkWidget
9798 * @selection: a #GdkAtom which identifies the clipboard
9799 * to use. %GDK_SELECTION_CLIPBOARD gives the
9800 * default clipboard. Another common value
9801 * is %GDK_SELECTION_PRIMARY, which gives
9802 * the primary X selection.
9804 * Returns the clipboard object for the given selection to
9805 * be used with @widget. @widget must have a #GdkDisplay
9806 * associated with it, so must be attached to a toplevel
9809 * Return value: the appropriate clipboard object. If no
9810 * clipboard already exists, a new one will
9811 * be created. Once a clipboard object has
9812 * been created, it is persistent for all time.
9817 gtk_widget_get_clipboard (GtkWidget *widget, GdkAtom selection)
9819 g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
9820 g_return_val_if_fail (gtk_widget_has_screen (widget), NULL);
9822 return gtk_clipboard_get_for_display (gtk_widget_get_display (widget),
9827 * gtk_widget_list_mnemonic_labels:
9828 * @widget: a #GtkWidget
9830 * Returns a newly allocated list of the widgets, normally labels, for
9831 * which this widget is a the target of a mnemonic (see for example,
9832 * gtk_label_set_mnemonic_widget()).
9834 * The widgets in the list are not individually referenced. If you
9835 * want to iterate through the list and perform actions involving
9836 * callbacks that might destroy the widgets, you
9837 * <emphasis>must</emphasis> call <literal>g_list_foreach (result,
9838 * (GFunc)g_object_ref, NULL)</literal> first, and then unref all the
9839 * widgets afterwards.
9841 * Return value: the list of mnemonic labels; free this list
9842 * with g_list_free() when you are done with it.
9847 gtk_widget_list_mnemonic_labels (GtkWidget *widget)
9852 g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
9854 for (l = g_object_get_qdata (G_OBJECT (widget), quark_mnemonic_labels); l; l = l->next)
9855 list = g_list_prepend (list, l->data);
9861 * gtk_widget_add_mnemonic_label:
9862 * @widget: a #GtkWidget
9863 * @label: a #GtkWidget that acts as a mnemonic label for @widget
9865 * Adds a widget to the list of mnemonic labels for
9866 * this widget. (See gtk_widget_list_mnemonic_labels()). Note the
9867 * list of mnemonic labels for the widget is cleared when the
9868 * widget is destroyed, so the caller must make sure to update
9869 * its internal state at this point as well, by using a connection
9870 * to the #GtkWidget::destroy signal or a weak notifier.
9875 gtk_widget_add_mnemonic_label (GtkWidget *widget,
9878 GSList *old_list, *new_list;
9880 g_return_if_fail (GTK_IS_WIDGET (widget));
9881 g_return_if_fail (GTK_IS_WIDGET (label));
9883 old_list = g_object_steal_qdata (G_OBJECT (widget), quark_mnemonic_labels);
9884 new_list = g_slist_prepend (old_list, label);
9886 g_object_set_qdata_full (G_OBJECT (widget), quark_mnemonic_labels,
9887 new_list, (GDestroyNotify) g_slist_free);
9891 * gtk_widget_remove_mnemonic_label:
9892 * @widget: a #GtkWidget
9893 * @label: a #GtkWidget that was previously set as a mnemnic label for
9894 * @widget with gtk_widget_add_mnemonic_label().
9896 * Removes a widget from the list of mnemonic labels for
9897 * this widget. (See gtk_widget_list_mnemonic_labels()). The widget
9898 * must have previously been added to the list with
9899 * gtk_widget_add_mnemonic_label().
9904 gtk_widget_remove_mnemonic_label (GtkWidget *widget,
9907 GSList *old_list, *new_list;
9909 g_return_if_fail (GTK_IS_WIDGET (widget));
9910 g_return_if_fail (GTK_IS_WIDGET (label));
9912 old_list = g_object_steal_qdata (G_OBJECT (widget), quark_mnemonic_labels);
9913 new_list = g_slist_remove (old_list, label);
9916 g_object_set_qdata_full (G_OBJECT (widget), quark_mnemonic_labels,
9917 new_list, (GDestroyNotify) g_slist_free);
9921 * gtk_widget_get_no_show_all:
9922 * @widget: a #GtkWidget
9924 * Returns the current value of the GtkWidget:no-show-all property,
9925 * which determines whether calls to gtk_widget_show_all() and
9926 * gtk_widget_hide_all() will affect this widget.
9928 * Return value: the current value of the "no-show-all" property.
9933 gtk_widget_get_no_show_all (GtkWidget *widget)
9935 g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
9937 return (GTK_WIDGET_FLAGS (widget) & GTK_NO_SHOW_ALL) != 0;
9941 * gtk_widget_set_no_show_all:
9942 * @widget: a #GtkWidget
9943 * @no_show_all: the new value for the "no-show-all" property
9945 * Sets the #GtkWidget:no-show-all property, which determines whether
9946 * calls to gtk_widget_show_all() and gtk_widget_hide_all() will affect
9949 * This is mostly for use in constructing widget hierarchies with externally
9950 * controlled visibility, see #GtkUIManager.
9955 gtk_widget_set_no_show_all (GtkWidget *widget,
9956 gboolean no_show_all)
9958 g_return_if_fail (GTK_IS_WIDGET (widget));
9960 no_show_all = (no_show_all != FALSE);
9962 if (no_show_all == ((GTK_WIDGET_FLAGS (widget) & GTK_NO_SHOW_ALL) != 0))
9966 GTK_WIDGET_SET_FLAGS (widget, GTK_NO_SHOW_ALL);
9968 GTK_WIDGET_UNSET_FLAGS (widget, GTK_NO_SHOW_ALL);
9970 g_object_notify (G_OBJECT (widget), "no-show-all");
9975 gtk_widget_real_set_has_tooltip (GtkWidget *widget,
9976 gboolean has_tooltip,
9979 gboolean priv_has_tooltip;
9981 priv_has_tooltip = GPOINTER_TO_UINT (g_object_get_qdata (G_OBJECT (widget),
9982 quark_has_tooltip));
9984 if (priv_has_tooltip != has_tooltip || force)
9986 priv_has_tooltip = has_tooltip;
9988 if (priv_has_tooltip)
9990 if (GTK_WIDGET_REALIZED (widget) && GTK_WIDGET_NO_WINDOW (widget))
9991 gdk_window_set_events (widget->window,
9992 gdk_window_get_events (widget->window) |
9993 GDK_LEAVE_NOTIFY_MASK |
9994 GDK_POINTER_MOTION_MASK |
9995 GDK_POINTER_MOTION_HINT_MASK);
9997 if (!GTK_WIDGET_NO_WINDOW (widget))
9998 gtk_widget_add_events (widget,
9999 GDK_LEAVE_NOTIFY_MASK |
10000 GDK_POINTER_MOTION_MASK |
10001 GDK_POINTER_MOTION_HINT_MASK);
10004 g_object_set_qdata (G_OBJECT (widget), quark_has_tooltip,
10005 GUINT_TO_POINTER (priv_has_tooltip));
10010 * gtk_widget_set_tooltip_window:
10011 * @widget: a #GtkWidget
10012 * @custom_window: a #GtkWindow, or %NULL
10014 * Replaces the default, usually yellow, window used for displaying
10015 * tooltips with @custom_window. GTK+ will take care of showing and
10016 * hiding @custom_window at the right moment, to behave likewise as
10017 * the default tooltip window. If @custom_window is %NULL, the default
10018 * tooltip window will be used.
10023 gtk_widget_set_tooltip_window (GtkWidget *widget,
10024 GtkWindow *custom_window)
10027 gchar *tooltip_markup;
10028 GtkWindow *tooltip_window;
10030 g_return_if_fail (GTK_IS_WIDGET (widget));
10032 g_return_if_fail (GTK_IS_WINDOW (custom_window));
10034 tooltip_window = g_object_get_qdata (G_OBJECT (widget), quark_tooltip_window);
10035 tooltip_markup = g_object_get_qdata (G_OBJECT (widget), quark_tooltip_markup);
10038 g_object_ref (custom_window);
10040 tooltip_window = custom_window;
10041 g_object_set_qdata_full (G_OBJECT (widget), quark_tooltip_window,
10042 tooltip_window, g_object_unref);
10044 tmp = (tooltip_window != NULL || tooltip_markup != NULL);
10045 gtk_widget_real_set_has_tooltip (widget, tmp, FALSE);
10048 gtk_widget_trigger_tooltip_query (widget);
10052 * gtk_widget_get_tooltip_window:
10053 * @widget: a #GtkWidget
10055 * Returns the #GtkWindow of the current tooltip. This can be the
10056 * GtkWindow created by default, or the custom tooltip window set
10057 * using gtk_widget_set_tooltip_window().
10059 * Return value: The #GtkWindow of the current tooltip.
10064 gtk_widget_get_tooltip_window (GtkWidget *widget)
10066 g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
10068 return g_object_get_qdata (G_OBJECT (widget), quark_tooltip_window);
10072 * gtk_widget_trigger_tooltip_query:
10073 * @widget: a #GtkWidget
10075 * Triggers a tooltip query on the display where the toplevel of @widget
10076 * is located. See gtk_tooltip_trigger_tooltip_query() for more
10082 gtk_widget_trigger_tooltip_query (GtkWidget *widget)
10084 gtk_tooltip_trigger_tooltip_query (gtk_widget_get_display (widget));
10088 * gtk_widget_set_tooltip_text:
10089 * @widget: a #GtkWidget
10090 * @text: the contents of the tooltip for @widget
10092 * Sets @text as the contents of the tooltip. This function will take
10093 * care of setting GtkWidget:has-tooltip to %TRUE and of the default
10094 * handler for the GtkWidget::query-tooltip signal.
10096 * See also the GtkWidget:tooltip-text property and gtk_tooltip_set_text().
10101 gtk_widget_set_tooltip_text (GtkWidget *widget,
10104 g_return_if_fail (GTK_IS_WIDGET (widget));
10106 g_object_set (G_OBJECT (widget), "tooltip-text", text, NULL);
10110 * gtk_widget_get_tooltip_text:
10111 * @widget: a #GtkWidget
10113 * Gets the contents of the tooltip for @widget.
10115 * Return value: the tooltip text, or %NULL. You should free the
10116 * returned string with g_free() when done.
10121 gtk_widget_get_tooltip_text (GtkWidget *widget)
10123 gchar *text = NULL;
10125 g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
10127 g_object_get (G_OBJECT (widget), "tooltip-text", &text, NULL);
10133 * gtk_widget_set_tooltip_markup:
10134 * @widget: a #GtkWidget
10135 * @markup: the contents of the tooltip for @widget, or %NULL
10137 * Sets @markup as the contents of the tooltip, which is marked up with
10138 * the <link linkend="PangoMarkupFormat">Pango text markup language</link>.
10140 * This function will take care of setting GtkWidget:has-tooltip to %TRUE
10141 * and of the default handler for the GtkWidget::query-tooltip signal.
10143 * See also the GtkWidget:tooltip-markup property and
10144 * gtk_tooltip_set_markup().
10149 gtk_widget_set_tooltip_markup (GtkWidget *widget,
10150 const gchar *markup)
10152 g_return_if_fail (GTK_IS_WIDGET (widget));
10154 g_object_set (G_OBJECT (widget), "tooltip-markup", markup, NULL);
10158 * gtk_widget_get_tooltip_markup:
10159 * @widget: a #GtkWidget
10161 * Gets the contents of the tooltip for @widget.
10163 * Return value: the tooltip text, or %NULL. You should free the
10164 * returned string with g_free() when done.
10169 gtk_widget_get_tooltip_markup (GtkWidget *widget)
10171 gchar *text = NULL;
10173 g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
10175 g_object_get (G_OBJECT (widget), "tooltip-markup", &text, NULL);
10181 * gtk_widget_set_has_tooltip:
10182 * @widget: a #GtkWidget
10183 * @has_tooltip: whether or not @widget has a tooltip.
10185 * Sets the has-tooltip property on @widget to @has_tooltip. See
10186 * GtkWidget:has-tooltip for more information.
10191 gtk_widget_set_has_tooltip (GtkWidget *widget,
10192 gboolean has_tooltip)
10194 g_return_if_fail (GTK_IS_WIDGET (widget));
10196 g_object_set (G_OBJECT (widget), "has-tooltip", has_tooltip, NULL);
10200 * gtk_widget_get_has_tooltip:
10201 * @widget: a #GtkWidget
10203 * Returns the current value of the has-tooltip property. See
10204 * GtkWidget:has-tooltip for more information.
10206 * Return value: current value of has-tooltip on @widget.
10211 gtk_widget_get_has_tooltip (GtkWidget *widget)
10213 gboolean has_tooltip = FALSE;
10215 g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
10217 g_object_get (G_OBJECT (widget), "has-tooltip", &has_tooltip, NULL);
10219 return has_tooltip;
10223 * gtk_widget_get_window:
10224 * @widget: a #GtkWidget
10226 * Returns the widget's window if it is realized, %NULL otherwise
10228 * Return value: @widget's window.
10233 gtk_widget_get_window (GtkWidget *widget)
10235 g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
10237 return widget->window;
10240 #define __GTK_WIDGET_C__
10241 #include "gtkaliasdef.c"