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gtk2/gtk/gtkwidget.c
Owen Taylor f67ae736ee Add private function to get the aux info structure fo the widget. 
Wed Mar 28 20:30:26 2001  Owen Taylor  <otaylor@redhat.com>

	* gtk/gtkwidget.[ch] (_gtk_widget_get_aux_info): Add private function
	to get the aux info structure fo the widget.

	* gtk/gtklabel.c gtk/gtkscrolledwindow.c gtk/gtkwindow.c: Use
	above function.

        [ Patch from  Havoc Pennington  <hp@redhat.com> ]

	* gdk/x11/gdkwindow-x11.c (gdk_window_get_frame_extents): function
	to get the size of the window manager frame, basically the same
	code that gdk_window_get_root_origin() had
	(gdk_window_get_root_origin): use gdk_window_get_frame_extents()

	* gtk/gtkwindow.c (gtk_window_set_default_size): use
	gdk_window_resize() if the window is realized and resizeable

	* gdk/x11/gdkwindow-x11.c (gdk_window_set_geometry_hints): fix
	typo so that setting gravity works

	* gtk/gtkwindow.c (gtk_window_move_resize): don't ever use
	allocation if auto_shrink is on, even if the default size
	has not changed.

	* gtk/gtkwidget.c (gtk_widget_render_icon): remove bogus
	g_return_if_fail
2001-03-29 23:02:30 +00:00

5501 lines
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/* GTK - The GIMP Toolkit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*
* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
* file for a list of people on the GTK+ Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
#include <stdarg.h>
#include <string.h>
#include <locale.h>
#include "gtkcontainer.h"
#include "gtkiconfactory.h"
#include "gtkmain.h"
#include "gtkrc.h"
#include "gtkselection.h"
#include "gtksignal.h"
#include "gtkwidget.h"
#include "gtkwindow.h"
#include "gtkbindings.h"
#include "gtkprivate.h"
#include "gdk/gdk.h"
#include "gdk/gdkprivate.h" /* Used in gtk_reset_shapes_recurse to avoid copy */
#include "gobject/gvaluecollector.h"
#include "gdk/gdkkeysyms.h"
#define WIDGET_CLASS(w) GTK_WIDGET_GET_CLASS (w)
#define INIT_PATH_SIZE (512)
enum {
SHOW,
HIDE,
MAP,
UNMAP,
REALIZE,
UNREALIZE,
SIZE_REQUEST,
SIZE_ALLOCATE,
STATE_CHANGED,
PARENT_SET,
HIERARCHY_CHANGED,
STYLE_SET,
DIRECTION_CHANGED,
ADD_ACCELERATOR,
REMOVE_ACCELERATOR,
ACTIVATE_MNEMONIC,
GRAB_FOCUS,
EVENT,
BUTTON_PRESS_EVENT,
BUTTON_RELEASE_EVENT,
SCROLL_EVENT,
MOTION_NOTIFY_EVENT,
DELETE_EVENT,
DESTROY_EVENT,
EXPOSE_EVENT,
KEY_PRESS_EVENT,
KEY_RELEASE_EVENT,
ENTER_NOTIFY_EVENT,
LEAVE_NOTIFY_EVENT,
CONFIGURE_EVENT,
FOCUS_IN_EVENT,
FOCUS_OUT_EVENT,
MAP_EVENT,
UNMAP_EVENT,
PROPERTY_NOTIFY_EVENT,
SELECTION_CLEAR_EVENT,
SELECTION_REQUEST_EVENT,
SELECTION_NOTIFY_EVENT,
SELECTION_GET,
SELECTION_RECEIVED,
PROXIMITY_IN_EVENT,
PROXIMITY_OUT_EVENT,
DRAG_BEGIN,
DRAG_END,
DRAG_DATA_DELETE,
DRAG_LEAVE,
DRAG_MOTION,
DRAG_DROP,
DRAG_DATA_GET,
DRAG_DATA_RECEIVED,
CLIENT_EVENT,
NO_EXPOSE_EVENT,
VISIBILITY_NOTIFY_EVENT,
WINDOW_STATE_EVENT,
POPUP_MENU,
LAST_SIGNAL
};
enum {
ARG_0,
ARG_NAME,
ARG_PARENT,
ARG_X,
ARG_Y,
ARG_WIDTH,
ARG_HEIGHT,
ARG_VISIBLE,
ARG_SENSITIVE,
ARG_APP_PAINTABLE,
ARG_CAN_FOCUS,
ARG_HAS_FOCUS,
ARG_CAN_DEFAULT,
ARG_HAS_DEFAULT,
ARG_RECEIVES_DEFAULT,
ARG_COMPOSITE_CHILD,
ARG_STYLE,
ARG_EVENTS,
ARG_EXTENSION_EVENTS
};
typedef struct _GtkStateData GtkStateData;
struct _GtkStateData
{
GtkStateType state;
guint state_restoration : 1;
guint parent_sensitive : 1;
guint use_forall : 1;
};
static void gtk_widget_class_init (GtkWidgetClass *klass);
static void gtk_widget_init (GtkWidget *widget);
static void gtk_widget_set_arg (GtkObject *object,
GtkArg *arg,
guint arg_id);
static void gtk_widget_get_arg (GtkObject *object,
GtkArg *arg,
guint arg_id);
static void gtk_widget_shutdown (GObject *object);
static void gtk_widget_real_destroy (GtkObject *object);
static void gtk_widget_finalize (GObject *object);
static void gtk_widget_real_show (GtkWidget *widget);
static void gtk_widget_real_hide (GtkWidget *widget);
static void gtk_widget_real_map (GtkWidget *widget);
static void gtk_widget_real_unmap (GtkWidget *widget);
static void gtk_widget_real_realize (GtkWidget *widget);
static void gtk_widget_real_unrealize (GtkWidget *widget);
static void gtk_widget_real_size_request (GtkWidget *widget,
GtkRequisition *requisition);
static void gtk_widget_real_size_allocate (GtkWidget *widget,
GtkAllocation *allocation);
static gboolean gtk_widget_real_key_press_event (GtkWidget *widget,
GdkEventKey *event);
static gboolean gtk_widget_real_key_release_event (GtkWidget *widget,
GdkEventKey *event);
static gboolean gtk_widget_real_focus_in_event (GtkWidget *widget,
GdkEventFocus *event);
static gboolean gtk_widget_real_focus_out_event (GtkWidget *widget,
GdkEventFocus *event);
static void gtk_widget_style_set (GtkWidget *widget,
GtkStyle *previous_style);
static void gtk_widget_direction_changed (GtkWidget *widget,
GtkTextDirection previous_direction);
static void gtk_widget_real_grab_focus (GtkWidget *focus_widget);
static GdkColormap* gtk_widget_peek_colormap (void);
static GtkStyle* gtk_widget_peek_style (void);
static PangoContext *gtk_widget_peek_pango_context (GtkWidget *widget);
static void gtk_widget_reparent_container_child (GtkWidget *widget,
gpointer client_data);
static void gtk_widget_propagate_state (GtkWidget *widget,
GtkStateData *data);
static void gtk_widget_set_style_internal (GtkWidget *widget,
GtkStyle *style,
gboolean initial_emission);
static void gtk_widget_set_style_recurse (GtkWidget *widget,
gpointer client_data);
static gint gtk_widget_event_internal (GtkWidget *widget,
GdkEvent *event);
static void gtk_widget_propagate_hierarchy_changed (GtkWidget *widget,
gpointer client_data);
static gboolean gtk_widget_real_activate_mnemonic (GtkWidget *widget,
gboolean group_cycling);
static GtkWidgetAuxInfo* gtk_widget_aux_info_new (void);
static void gtk_widget_aux_info_destroy (GtkWidgetAuxInfo *aux_info);
static void gtk_widget_do_uposition (GtkWidget *widget);
static gpointer parent_class = NULL;
static guint widget_signals[LAST_SIGNAL] = { 0 };
static GMemChunk *aux_info_mem_chunk = NULL;
static GdkColormap *default_colormap = NULL;
static GtkStyle *gtk_default_style = NULL;
static GSList *colormap_stack = NULL;
static GSList *style_stack = NULL;
static guint composite_child_stack = 0;
static GtkTextDirection gtk_default_direction = GTK_TEXT_DIR_LTR;
static GParamSpecPool *style_property_spec_pool = NULL;
static GQuark quark_property_parser = 0;
static GQuark quark_aux_info = 0;
static GQuark quark_event_mask = 0;
static GQuark quark_extension_event_mode = 0;
static GQuark quark_parent_window = 0;
static GQuark quark_saved_default_style = 0;
static GQuark quark_shape_info = 0;
static GQuark quark_colormap = 0;
static GQuark quark_pango_context = 0;
static GQuark quark_rc_style = 0;
/*****************************************
* gtk_widget_get_type:
*
* arguments:
*
* results:
*****************************************/
GtkType
gtk_widget_get_type (void)
{
static GtkType widget_type = 0;
if (!widget_type)
{
static const GtkTypeInfo widget_info =
{
"GtkWidget",
sizeof (GtkWidget),
sizeof (GtkWidgetClass),
(GtkClassInitFunc) gtk_widget_class_init,
(GtkObjectInitFunc) gtk_widget_init,
/* reserved_1 */ NULL,
/* reserved_2 */ NULL,
(GtkClassInitFunc) NULL,
};
widget_type = gtk_type_unique (GTK_TYPE_OBJECT, &widget_info);
}
return widget_type;
}
static gboolean
accumulator_stop_handled_emission (GSignalInvocationHint *ihint,
GValue *return_accu,
const GValue *handler_return,
gpointer data)
{
gboolean continue_emission;
gboolean signal_handled;
signal_handled = g_value_get_boolean (handler_return);
g_value_set_boolean (return_accu, signal_handled);
continue_emission = !signal_handled;
return continue_emission;
}
/*****************************************
* gtk_widget_class_init:
*
* arguments:
*
* results:
*****************************************/
static void
gtk_widget_class_init (GtkWidgetClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GtkObjectClass *object_class = GTK_OBJECT_CLASS (klass);
GtkBindingSet *binding_set;
parent_class = gtk_type_class (GTK_TYPE_OBJECT);
gobject_class->shutdown = gtk_widget_shutdown;
gobject_class->finalize = gtk_widget_finalize;
object_class->set_arg = gtk_widget_set_arg;
object_class->get_arg = gtk_widget_get_arg;
object_class->destroy = gtk_widget_real_destroy;
klass->activate_signal = 0;
klass->set_scroll_adjustments_signal = 0;
klass->show = gtk_widget_real_show;
klass->show_all = gtk_widget_show;
klass->hide = gtk_widget_real_hide;
klass->hide_all = gtk_widget_hide;
klass->map = gtk_widget_real_map;
klass->unmap = gtk_widget_real_unmap;
klass->realize = gtk_widget_real_realize;
klass->unrealize = gtk_widget_real_unrealize;
klass->size_request = gtk_widget_real_size_request;
klass->size_allocate = gtk_widget_real_size_allocate;
klass->state_changed = NULL;
klass->parent_set = NULL;
klass->hierarchy_changed = NULL;
klass->style_set = gtk_widget_style_set;
klass->direction_changed = gtk_widget_direction_changed;
klass->add_accelerator = (void*) gtk_accel_group_handle_add;
klass->remove_accelerator = (void*) gtk_accel_group_handle_remove;
klass->activate_mnemonic = gtk_widget_real_activate_mnemonic;
klass->grab_focus = gtk_widget_real_grab_focus;
klass->event = NULL;
klass->button_press_event = NULL;
klass->button_release_event = NULL;
klass->motion_notify_event = NULL;
klass->delete_event = NULL;
klass->destroy_event = NULL;
klass->expose_event = NULL;
klass->key_press_event = gtk_widget_real_key_press_event;
klass->key_release_event = gtk_widget_real_key_release_event;
klass->enter_notify_event = NULL;
klass->leave_notify_event = NULL;
klass->configure_event = NULL;
klass->focus_in_event = gtk_widget_real_focus_in_event;
klass->focus_out_event = gtk_widget_real_focus_out_event;
klass->map_event = NULL;
klass->unmap_event = NULL;
klass->window_state_event = NULL;
klass->property_notify_event = gtk_selection_property_notify;
klass->selection_clear_event = gtk_selection_clear;
klass->selection_request_event = gtk_selection_request;
klass->selection_notify_event = gtk_selection_notify;
klass->selection_received = NULL;
klass->proximity_in_event = NULL;
klass->proximity_out_event = NULL;
klass->drag_begin = NULL;
klass->drag_end = NULL;
klass->drag_data_delete = NULL;
klass->drag_leave = NULL;
klass->drag_motion = NULL;
klass->drag_drop = NULL;
klass->drag_data_received = NULL;
klass->no_expose_event = NULL;
quark_property_parser = g_quark_from_static_string ("gtk-rc-property-parser");
quark_aux_info = g_quark_from_static_string ("gtk-aux-info");
quark_event_mask = g_quark_from_static_string ("gtk-event-mask");
quark_extension_event_mode = g_quark_from_static_string ("gtk-extension-event-mode");
quark_parent_window = g_quark_from_static_string ("gtk-parent-window");
quark_saved_default_style = g_quark_from_static_string ("gtk-saved-default-style");
quark_shape_info = g_quark_from_static_string ("gtk-shape-info");
quark_colormap = g_quark_from_static_string ("gtk-colormap");
quark_pango_context = g_quark_from_static_string ("gtk-pango-context");
quark_rc_style = g_quark_from_static_string ("gtk-rc-style");
style_property_spec_pool = g_param_spec_pool_new (FALSE);
gtk_object_add_arg_type ("GtkWidget::name", GTK_TYPE_STRING, GTK_ARG_READWRITE, ARG_NAME);
gtk_object_add_arg_type ("GtkWidget::parent", GTK_TYPE_CONTAINER, GTK_ARG_READWRITE, ARG_PARENT);
gtk_object_add_arg_type ("GtkWidget::x", GTK_TYPE_INT, GTK_ARG_READWRITE, ARG_X);
gtk_object_add_arg_type ("GtkWidget::y", GTK_TYPE_INT, GTK_ARG_READWRITE, ARG_Y);
gtk_object_add_arg_type ("GtkWidget::width", GTK_TYPE_INT, GTK_ARG_READWRITE, ARG_WIDTH);
gtk_object_add_arg_type ("GtkWidget::height", GTK_TYPE_INT, GTK_ARG_READWRITE, ARG_HEIGHT);
gtk_object_add_arg_type ("GtkWidget::visible", GTK_TYPE_BOOL, GTK_ARG_READWRITE, ARG_VISIBLE);
gtk_object_add_arg_type ("GtkWidget::sensitive", GTK_TYPE_BOOL, GTK_ARG_READWRITE, ARG_SENSITIVE);
gtk_object_add_arg_type ("GtkWidget::app_paintable", GTK_TYPE_BOOL, GTK_ARG_READWRITE, ARG_APP_PAINTABLE);
gtk_object_add_arg_type ("GtkWidget::can_focus", GTK_TYPE_BOOL, GTK_ARG_READWRITE, ARG_CAN_FOCUS);
gtk_object_add_arg_type ("GtkWidget::has_focus", GTK_TYPE_BOOL, GTK_ARG_READWRITE, ARG_HAS_FOCUS);
gtk_object_add_arg_type ("GtkWidget::can_default", GTK_TYPE_BOOL, GTK_ARG_READWRITE, ARG_CAN_DEFAULT);
gtk_object_add_arg_type ("GtkWidget::has_default", GTK_TYPE_BOOL, GTK_ARG_READWRITE, ARG_HAS_DEFAULT);
gtk_object_add_arg_type ("GtkWidget::receives_default", GTK_TYPE_BOOL, GTK_ARG_READWRITE, ARG_RECEIVES_DEFAULT);
gtk_object_add_arg_type ("GtkWidget::composite_child", GTK_TYPE_BOOL, GTK_ARG_READWRITE, ARG_COMPOSITE_CHILD);
gtk_object_add_arg_type ("GtkWidget::style", GTK_TYPE_STYLE, GTK_ARG_READWRITE, ARG_STYLE);
gtk_object_add_arg_type ("GtkWidget::events", GTK_TYPE_GDK_EVENT_MASK, GTK_ARG_READWRITE, ARG_EVENTS);
gtk_object_add_arg_type ("GtkWidget::extension_events", GTK_TYPE_GDK_EVENT_MASK, GTK_ARG_READWRITE, ARG_EXTENSION_EVENTS);
widget_signals[SHOW] =
gtk_signal_new ("show",
GTK_RUN_FIRST,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkWidgetClass, show),
gtk_marshal_VOID__VOID,
GTK_TYPE_NONE, 0);
widget_signals[HIDE] =
gtk_signal_new ("hide",
GTK_RUN_FIRST,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkWidgetClass, hide),
gtk_marshal_VOID__VOID,
GTK_TYPE_NONE, 0);
widget_signals[MAP] =
gtk_signal_new ("map",
GTK_RUN_FIRST,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkWidgetClass, map),
gtk_marshal_VOID__VOID,
GTK_TYPE_NONE, 0);
widget_signals[UNMAP] =
gtk_signal_new ("unmap",
GTK_RUN_FIRST,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkWidgetClass, unmap),
gtk_marshal_VOID__VOID,
GTK_TYPE_NONE, 0);
widget_signals[REALIZE] =
gtk_signal_new ("realize",
GTK_RUN_FIRST,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkWidgetClass, realize),
gtk_marshal_VOID__VOID,
GTK_TYPE_NONE, 0);
widget_signals[UNREALIZE] =
gtk_signal_new ("unrealize",
GTK_RUN_FIRST,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkWidgetClass, unrealize),
gtk_marshal_VOID__VOID,
GTK_TYPE_NONE, 0);
widget_signals[SIZE_REQUEST] =
gtk_signal_new ("size_request",
GTK_RUN_FIRST,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkWidgetClass, size_request),
gtk_marshal_VOID__POINTER,
GTK_TYPE_NONE, 1,
GTK_TYPE_POINTER);
widget_signals[SIZE_ALLOCATE] =
gtk_signal_new ("size_allocate",
GTK_RUN_FIRST,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkWidgetClass, size_allocate),
gtk_marshal_VOID__POINTER,
GTK_TYPE_NONE, 1,
GTK_TYPE_POINTER);
widget_signals[STATE_CHANGED] =
gtk_signal_new ("state_changed",
GTK_RUN_FIRST,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkWidgetClass, state_changed),
gtk_marshal_VOID__ENUM,
GTK_TYPE_NONE, 1,
GTK_TYPE_STATE_TYPE);
widget_signals[PARENT_SET] =
gtk_signal_new ("parent_set",
GTK_RUN_FIRST,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkWidgetClass, parent_set),
gtk_marshal_VOID__OBJECT,
GTK_TYPE_NONE, 1,
GTK_TYPE_OBJECT);
widget_signals[HIERARCHY_CHANGED] =
gtk_signal_new ("hierarchy_changed",
GTK_RUN_LAST,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkWidgetClass, hierarchy_changed),
gtk_marshal_NONE__NONE,
GTK_TYPE_NONE, 0);
widget_signals[STYLE_SET] =
gtk_signal_new ("style_set",
GTK_RUN_FIRST,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkWidgetClass, style_set),
gtk_marshal_VOID__OBJECT,
GTK_TYPE_NONE, 1,
GTK_TYPE_STYLE);
widget_signals[DIRECTION_CHANGED] =
gtk_signal_new ("direction_changed",
GTK_RUN_FIRST,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkWidgetClass, direction_changed),
gtk_marshal_VOID__ENUM,
GTK_TYPE_NONE, 1,
GTK_TYPE_TEXT_DIRECTION);
widget_signals[ADD_ACCELERATOR] =
gtk_accel_group_create_add (GTK_CLASS_TYPE (object_class), GTK_RUN_LAST,
GTK_SIGNAL_OFFSET (GtkWidgetClass, add_accelerator));
widget_signals[REMOVE_ACCELERATOR] =
gtk_accel_group_create_remove (GTK_CLASS_TYPE (object_class), GTK_RUN_LAST,
GTK_SIGNAL_OFFSET (GtkWidgetClass, remove_accelerator));
widget_signals[ACTIVATE_MNEMONIC] =
g_signal_newc ("activate_mnemonic",
GTK_CLASS_TYPE (object_class),
GTK_RUN_LAST,
GTK_SIGNAL_OFFSET (GtkWidgetClass, activate_mnemonic),
accumulator_stop_handled_emission, NULL,
gtk_marshal_BOOLEAN__BOOLEAN,
GTK_TYPE_BOOL, 1,
GTK_TYPE_BOOL);
widget_signals[GRAB_FOCUS] =
gtk_signal_new ("grab_focus",
GTK_RUN_LAST | GTK_RUN_ACTION,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkWidgetClass, grab_focus),
gtk_marshal_VOID__VOID,
GTK_TYPE_NONE, 0);
widget_signals[EVENT] =
gtk_signal_new ("event",
GTK_RUN_LAST,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkWidgetClass, event),
gtk_marshal_BOOLEAN__BOXED,
GTK_TYPE_BOOL, 1,
GTK_TYPE_GDK_EVENT);
widget_signals[BUTTON_PRESS_EVENT] =
gtk_signal_new ("button_press_event",
GTK_RUN_LAST,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkWidgetClass, button_press_event),
gtk_marshal_BOOLEAN__BOXED,
GTK_TYPE_BOOL, 1,
GTK_TYPE_GDK_EVENT);
widget_signals[BUTTON_RELEASE_EVENT] =
gtk_signal_new ("button_release_event",
GTK_RUN_LAST,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkWidgetClass, button_release_event),
gtk_marshal_BOOLEAN__BOXED,
GTK_TYPE_BOOL, 1,
GTK_TYPE_GDK_EVENT);
widget_signals[SCROLL_EVENT] =
gtk_signal_new ("scroll_event",
GTK_RUN_LAST,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkWidgetClass, scroll_event),
gtk_marshal_BOOLEAN__BOXED,
GTK_TYPE_BOOL, 1,
GTK_TYPE_GDK_EVENT);
widget_signals[MOTION_NOTIFY_EVENT] =
gtk_signal_new ("motion_notify_event",
GTK_RUN_LAST,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkWidgetClass, motion_notify_event),
gtk_marshal_BOOLEAN__BOXED,
GTK_TYPE_BOOL, 1,
GTK_TYPE_GDK_EVENT);
widget_signals[DELETE_EVENT] =
gtk_signal_new ("delete_event",
GTK_RUN_LAST,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkWidgetClass, delete_event),
gtk_marshal_BOOLEAN__BOXED,
GTK_TYPE_BOOL, 1,
GTK_TYPE_GDK_EVENT);
widget_signals[DESTROY_EVENT] =
gtk_signal_new ("destroy_event",
GTK_RUN_LAST,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkWidgetClass, destroy_event),
gtk_marshal_BOOLEAN__BOXED,
GTK_TYPE_BOOL, 1,
GTK_TYPE_GDK_EVENT);
widget_signals[EXPOSE_EVENT] =
gtk_signal_new ("expose_event",
GTK_RUN_LAST,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkWidgetClass, expose_event),
gtk_marshal_BOOLEAN__BOXED,
GTK_TYPE_BOOL, 1,
GTK_TYPE_GDK_EVENT);
widget_signals[KEY_PRESS_EVENT] =
gtk_signal_new ("key_press_event",
GTK_RUN_LAST,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkWidgetClass, key_press_event),
gtk_marshal_BOOLEAN__BOXED,
GTK_TYPE_BOOL, 1,
GTK_TYPE_GDK_EVENT);
widget_signals[KEY_RELEASE_EVENT] =
gtk_signal_new ("key_release_event",
GTK_RUN_LAST,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkWidgetClass, key_release_event),
gtk_marshal_BOOLEAN__BOXED,
GTK_TYPE_BOOL, 1,
GTK_TYPE_GDK_EVENT);
widget_signals[ENTER_NOTIFY_EVENT] =
gtk_signal_new ("enter_notify_event",
GTK_RUN_LAST,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkWidgetClass, enter_notify_event),
gtk_marshal_BOOLEAN__BOXED,
GTK_TYPE_BOOL, 1,
GTK_TYPE_GDK_EVENT);
widget_signals[LEAVE_NOTIFY_EVENT] =
gtk_signal_new ("leave_notify_event",
GTK_RUN_LAST,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkWidgetClass, leave_notify_event),
gtk_marshal_BOOLEAN__BOXED,
GTK_TYPE_BOOL, 1,
GTK_TYPE_GDK_EVENT);
widget_signals[CONFIGURE_EVENT] =
gtk_signal_new ("configure_event",
GTK_RUN_LAST,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkWidgetClass, configure_event),
gtk_marshal_BOOLEAN__BOXED,
GTK_TYPE_BOOL, 1,
GTK_TYPE_GDK_EVENT);
widget_signals[FOCUS_IN_EVENT] =
gtk_signal_new ("focus_in_event",
GTK_RUN_LAST,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkWidgetClass, focus_in_event),
gtk_marshal_BOOLEAN__BOXED,
GTK_TYPE_BOOL, 1,
GTK_TYPE_GDK_EVENT);
widget_signals[FOCUS_OUT_EVENT] =
gtk_signal_new ("focus_out_event",
GTK_RUN_LAST,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkWidgetClass, focus_out_event),
gtk_marshal_BOOLEAN__BOXED,
GTK_TYPE_BOOL, 1,
GTK_TYPE_GDK_EVENT);
widget_signals[MAP_EVENT] =
gtk_signal_new ("map_event",
GTK_RUN_LAST,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkWidgetClass, map_event),
gtk_marshal_BOOLEAN__BOXED,
GTK_TYPE_BOOL, 1,
GTK_TYPE_GDK_EVENT);
widget_signals[UNMAP_EVENT] =
gtk_signal_new ("unmap_event",
GTK_RUN_LAST,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkWidgetClass, unmap_event),
gtk_marshal_BOOLEAN__BOXED,
GTK_TYPE_BOOL, 1,
GTK_TYPE_GDK_EVENT);
widget_signals[PROPERTY_NOTIFY_EVENT] =
gtk_signal_new ("property_notify_event",
GTK_RUN_LAST,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkWidgetClass, property_notify_event),
gtk_marshal_BOOLEAN__BOXED,
GTK_TYPE_BOOL, 1,
GTK_TYPE_GDK_EVENT);
widget_signals[SELECTION_CLEAR_EVENT] =
gtk_signal_new ("selection_clear_event",
GTK_RUN_LAST,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkWidgetClass, selection_clear_event),
gtk_marshal_BOOLEAN__BOXED,
GTK_TYPE_BOOL, 1,
GTK_TYPE_GDK_EVENT);
widget_signals[SELECTION_REQUEST_EVENT] =
gtk_signal_new ("selection_request_event",
GTK_RUN_LAST,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkWidgetClass, selection_request_event),
gtk_marshal_BOOLEAN__BOXED,
GTK_TYPE_BOOL, 1,
GTK_TYPE_GDK_EVENT);
widget_signals[SELECTION_NOTIFY_EVENT] =
gtk_signal_new ("selection_notify_event",
GTK_RUN_LAST,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkWidgetClass, selection_notify_event),
gtk_marshal_BOOLEAN__BOXED,
GTK_TYPE_BOOL, 1,
GTK_TYPE_GDK_EVENT);
widget_signals[SELECTION_RECEIVED] =
gtk_signal_new ("selection_received",
GTK_RUN_LAST,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkWidgetClass, selection_received),
gtk_marshal_VOID__BOXED_UINT,
GTK_TYPE_NONE, 2,
GTK_TYPE_SELECTION_DATA,
GTK_TYPE_UINT);
widget_signals[SELECTION_GET] =
gtk_signal_new ("selection_get",
GTK_RUN_LAST,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkWidgetClass, selection_get),
gtk_marshal_VOID__BOXED_UINT_UINT,
GTK_TYPE_NONE, 3,
GTK_TYPE_SELECTION_DATA,
GTK_TYPE_UINT,
GTK_TYPE_UINT);
widget_signals[PROXIMITY_IN_EVENT] =
gtk_signal_new ("proximity_in_event",
GTK_RUN_LAST,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkWidgetClass, proximity_in_event),
gtk_marshal_BOOLEAN__BOXED,
GTK_TYPE_BOOL, 1,
GTK_TYPE_GDK_EVENT);
widget_signals[PROXIMITY_OUT_EVENT] =
gtk_signal_new ("proximity_out_event",
GTK_RUN_LAST,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkWidgetClass, proximity_out_event),
gtk_marshal_BOOLEAN__BOXED,
GTK_TYPE_BOOL, 1,
GTK_TYPE_GDK_EVENT);
widget_signals[DRAG_LEAVE] =
gtk_signal_new ("drag_leave",
GTK_RUN_LAST,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkWidgetClass, drag_leave),
gtk_marshal_VOID__OBJECT_UINT,
GTK_TYPE_NONE, 2,
GDK_TYPE_DRAG_CONTEXT,
GTK_TYPE_UINT);
widget_signals[DRAG_BEGIN] =
gtk_signal_new ("drag_begin",
GTK_RUN_LAST,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkWidgetClass, drag_begin),
gtk_marshal_VOID__OBJECT,
GTK_TYPE_NONE, 1,
GDK_TYPE_DRAG_CONTEXT);
widget_signals[DRAG_END] =
gtk_signal_new ("drag_end",
GTK_RUN_LAST,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkWidgetClass, drag_end),
gtk_marshal_VOID__OBJECT,
GTK_TYPE_NONE, 1,
GDK_TYPE_DRAG_CONTEXT);
widget_signals[DRAG_DATA_DELETE] =
gtk_signal_new ("drag_data_delete",
GTK_RUN_LAST,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkWidgetClass, drag_data_delete),
gtk_marshal_VOID__OBJECT,
GTK_TYPE_NONE, 1,
GDK_TYPE_DRAG_CONTEXT);
widget_signals[DRAG_MOTION] =
gtk_signal_new ("drag_motion",
GTK_RUN_LAST,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkWidgetClass, drag_motion),
gtk_marshal_BOOLEAN__OBJECT_INT_INT_UINT,
GTK_TYPE_BOOL, 4,
GDK_TYPE_DRAG_CONTEXT,
GTK_TYPE_INT,
GTK_TYPE_INT,
GTK_TYPE_UINT);
widget_signals[DRAG_DROP] =
gtk_signal_new ("drag_drop",
GTK_RUN_LAST,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkWidgetClass, drag_drop),
gtk_marshal_BOOLEAN__OBJECT_INT_INT_UINT,
GTK_TYPE_BOOL, 4,
GDK_TYPE_DRAG_CONTEXT,
GTK_TYPE_INT,
GTK_TYPE_INT,
GTK_TYPE_UINT);
widget_signals[DRAG_DATA_GET] =
gtk_signal_new ("drag_data_get",
GTK_RUN_LAST,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkWidgetClass, drag_data_get),
gtk_marshal_VOID__OBJECT_BOXED_UINT_UINT,
GTK_TYPE_NONE, 4,
GDK_TYPE_DRAG_CONTEXT,
GTK_TYPE_SELECTION_DATA,
GTK_TYPE_UINT,
GTK_TYPE_UINT);
widget_signals[DRAG_DATA_RECEIVED] =
gtk_signal_new ("drag_data_received",
GTK_RUN_LAST,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkWidgetClass, drag_data_received),
gtk_marshal_VOID__OBJECT_INT_INT_BOXED_UINT_UINT,
GTK_TYPE_NONE, 6,
GDK_TYPE_DRAG_CONTEXT,
GTK_TYPE_INT,
GTK_TYPE_INT,
GTK_TYPE_SELECTION_DATA,
GTK_TYPE_UINT,
GTK_TYPE_UINT);
widget_signals[VISIBILITY_NOTIFY_EVENT] =
gtk_signal_new ("visibility_notify_event",
GTK_RUN_LAST,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkWidgetClass, visibility_notify_event),
gtk_marshal_BOOLEAN__BOXED,
GTK_TYPE_BOOL, 1,
GTK_TYPE_GDK_EVENT);
widget_signals[CLIENT_EVENT] =
gtk_signal_new ("client_event",
GTK_RUN_LAST,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkWidgetClass, client_event),
gtk_marshal_BOOLEAN__BOXED,
GTK_TYPE_BOOL, 1,
GTK_TYPE_GDK_EVENT);
widget_signals[NO_EXPOSE_EVENT] =
gtk_signal_new ("no_expose_event",
GTK_RUN_LAST,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkWidgetClass, no_expose_event),
gtk_marshal_BOOLEAN__BOXED,
GTK_TYPE_BOOL, 1,
GTK_TYPE_GDK_EVENT);
widget_signals[WINDOW_STATE_EVENT] =
gtk_signal_new ("window_state_event",
GTK_RUN_LAST,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkWidgetClass, window_state_event),
gtk_marshal_BOOLEAN__BOXED,
GTK_TYPE_BOOL, 1,
GTK_TYPE_GDK_EVENT);
widget_signals[POPUP_MENU] =
gtk_signal_new ("popup_menu",
GTK_RUN_LAST | GTK_RUN_ACTION,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkWidgetClass, popup_menu),
gtk_marshal_NONE__NONE,
GTK_TYPE_NONE, 0);
binding_set = gtk_binding_set_by_class (klass);
gtk_binding_entry_add_signal (binding_set, GDK_F10, GDK_SHIFT_MASK,
"popup_menu", 0);
gtk_binding_entry_add_signal (binding_set, GDK_Menu, 0,
"popup_menu", 0);
}
static void
gtk_widget_set_arg (GtkObject *object,
GtkArg *arg,
guint arg_id)
{
GtkWidget *widget;
GtkWidgetAuxInfo *aux_info;
widget = GTK_WIDGET (object);
switch (arg_id)
{
guint32 saved_flags;
case ARG_NAME:
gtk_widget_set_name (widget, GTK_VALUE_STRING (*arg));
break;
case ARG_PARENT:
gtk_container_add (GTK_CONTAINER (GTK_VALUE_OBJECT (*arg)), widget);
break;
case ARG_X:
aux_info = _gtk_widget_get_aux_info (widget, TRUE);
if (GTK_VALUE_INT (*arg) == -1)
aux_info->x_set = FALSE;
else
{
aux_info->x_set = TRUE;
aux_info->x = GTK_VALUE_INT (*arg);
}
gtk_widget_do_uposition (widget);
break;
case ARG_Y:
aux_info = _gtk_widget_get_aux_info (widget, TRUE);
if (GTK_VALUE_INT (*arg) == -1)
aux_info->y_set = FALSE;
else
{
aux_info->y_set = TRUE;
aux_info->y = GTK_VALUE_INT (*arg);
}
gtk_widget_do_uposition (widget);
break;
case ARG_WIDTH:
gtk_widget_set_usize (widget, GTK_VALUE_INT (*arg), -2);
break;
case ARG_HEIGHT:
gtk_widget_set_usize (widget, -2, GTK_VALUE_INT (*arg));
break;
case ARG_VISIBLE:
if (GTK_VALUE_BOOL(*arg))
gtk_widget_show (widget);
else
gtk_widget_hide (widget);
break;
case ARG_SENSITIVE:
gtk_widget_set_sensitive (widget, GTK_VALUE_BOOL (*arg));
break;
case ARG_APP_PAINTABLE:
gtk_widget_set_app_paintable (widget, GTK_VALUE_BOOL (*arg));
break;
case ARG_CAN_FOCUS:
saved_flags = GTK_WIDGET_FLAGS (widget);
if (GTK_VALUE_BOOL (*arg))
GTK_WIDGET_SET_FLAGS (widget, GTK_CAN_FOCUS);
else
GTK_WIDGET_UNSET_FLAGS (widget, GTK_CAN_FOCUS);
if (saved_flags != GTK_WIDGET_FLAGS (widget))
gtk_widget_queue_resize (widget);
break;
case ARG_HAS_FOCUS:
if (GTK_VALUE_BOOL (*arg))
gtk_widget_grab_focus (widget);
break;
case ARG_CAN_DEFAULT:
saved_flags = GTK_WIDGET_FLAGS (widget);
if (GTK_VALUE_BOOL (*arg))
GTK_WIDGET_SET_FLAGS (widget, GTK_CAN_DEFAULT);
else
GTK_WIDGET_UNSET_FLAGS (widget, GTK_CAN_DEFAULT);
if (saved_flags != GTK_WIDGET_FLAGS (widget))
gtk_widget_queue_resize (widget);
break;
case ARG_HAS_DEFAULT:
if (GTK_VALUE_BOOL (*arg))
gtk_widget_grab_default (widget);
break;
case ARG_RECEIVES_DEFAULT:
if (GTK_VALUE_BOOL (*arg))
GTK_WIDGET_SET_FLAGS (widget, GTK_RECEIVES_DEFAULT);
else
GTK_WIDGET_UNSET_FLAGS (widget, GTK_RECEIVES_DEFAULT);
break;
case ARG_COMPOSITE_CHILD:
if (GTK_VALUE_BOOL(*arg))
GTK_WIDGET_SET_FLAGS (widget, GTK_COMPOSITE_CHILD);
else
GTK_WIDGET_UNSET_FLAGS (widget, GTK_COMPOSITE_CHILD);
break;
case ARG_STYLE:
gtk_widget_set_style (widget, (GtkStyle*) GTK_VALUE_BOXED (*arg));
break;
case ARG_EVENTS:
if (!GTK_WIDGET_REALIZED (widget) && !GTK_WIDGET_NO_WINDOW (widget))
gtk_widget_set_events (widget, GTK_VALUE_FLAGS (*arg));
break;
case ARG_EXTENSION_EVENTS:
gtk_widget_set_extension_events (widget, GTK_VALUE_FLAGS (*arg));
break;
default:
break;
}
}
/*****************************************
* gtk_widget_get_arg:
*
* arguments:
*
* results:
*****************************************/
static void
gtk_widget_get_arg (GtkObject *object,
GtkArg *arg,
guint arg_id)
{
GtkWidget *widget;
widget = GTK_WIDGET (object);
switch (arg_id)
{
GtkWidgetAuxInfo *aux_info;
gint *eventp;
GdkExtensionMode *modep;
case ARG_NAME:
if (widget->name)
GTK_VALUE_STRING (*arg) = g_strdup (widget->name);
else
GTK_VALUE_STRING (*arg) = g_strdup ("");
break;
case ARG_PARENT:
GTK_VALUE_OBJECT (*arg) = (GtkObject*) widget->parent;
break;
case ARG_X:
aux_info =_gtk_widget_get_aux_info (widget, FALSE);
if (!aux_info || !aux_info->x_set)
GTK_VALUE_INT (*arg) = -1;
else
GTK_VALUE_INT (*arg) = aux_info->x;
break;
case ARG_Y:
aux_info =_gtk_widget_get_aux_info (widget, FALSE);
if (!aux_info || !aux_info->y_set)
GTK_VALUE_INT (*arg) = -1;
else
GTK_VALUE_INT (*arg) = aux_info->y;
break;
case ARG_WIDTH:
aux_info =_gtk_widget_get_aux_info (widget, FALSE);
if (!aux_info)
GTK_VALUE_INT (*arg) = -1;
else
GTK_VALUE_INT (*arg) = aux_info->width;
break;
case ARG_HEIGHT:
aux_info =_gtk_widget_get_aux_info (widget, FALSE);
if (!aux_info)
GTK_VALUE_INT (*arg) = -1;
else
GTK_VALUE_INT (*arg) = aux_info->height;
break;
case ARG_VISIBLE:
GTK_VALUE_BOOL (*arg) = (GTK_WIDGET_VISIBLE (widget) != FALSE);
break;
case ARG_SENSITIVE:
GTK_VALUE_BOOL (*arg) = (GTK_WIDGET_SENSITIVE (widget) != FALSE);
break;
case ARG_APP_PAINTABLE:
GTK_VALUE_BOOL (*arg) = (GTK_WIDGET_APP_PAINTABLE (widget) != FALSE);
break;
case ARG_CAN_FOCUS:
GTK_VALUE_BOOL (*arg) = (GTK_WIDGET_CAN_FOCUS (widget) != FALSE);
break;
case ARG_HAS_FOCUS:
GTK_VALUE_BOOL (*arg) = (GTK_WIDGET_HAS_FOCUS (widget) != FALSE);
break;
case ARG_CAN_DEFAULT:
GTK_VALUE_BOOL (*arg) = (GTK_WIDGET_CAN_DEFAULT (widget) != FALSE);
break;
case ARG_HAS_DEFAULT:
GTK_VALUE_BOOL (*arg) = (GTK_WIDGET_HAS_DEFAULT (widget) != FALSE);
break;
case ARG_RECEIVES_DEFAULT:
GTK_VALUE_BOOL (*arg) = (GTK_WIDGET_RECEIVES_DEFAULT (widget) != FALSE);
break;
case ARG_COMPOSITE_CHILD:
GTK_VALUE_BOOL (*arg) = (GTK_WIDGET_COMPOSITE_CHILD (widget) != FALSE);
break;
case ARG_STYLE:
GTK_VALUE_BOXED (*arg) = (gpointer) gtk_widget_get_style (widget);
break;
case ARG_EVENTS:
eventp = gtk_object_get_data_by_id (GTK_OBJECT (widget), quark_event_mask);
if (!eventp)
GTK_VALUE_FLAGS (*arg) = 0;
else
GTK_VALUE_FLAGS (*arg) = *eventp;
break;
case ARG_EXTENSION_EVENTS:
modep = gtk_object_get_data_by_id (GTK_OBJECT (widget), quark_extension_event_mode);
if (!modep)
GTK_VALUE_FLAGS (*arg) = 0;
else
GTK_VALUE_FLAGS (*arg) = *modep;
break;
default:
arg->type = GTK_TYPE_INVALID;
break;
}
}
/*****************************************
* gtk_widget_init:
*
* arguments:
*
* results:
*****************************************/
static void
gtk_widget_init (GtkWidget *widget)
{
GdkColormap *colormap;
GTK_PRIVATE_FLAGS (widget) = 0;
widget->state = GTK_STATE_NORMAL;
widget->saved_state = GTK_STATE_NORMAL;
widget->name = NULL;
widget->requisition.width = 0;
widget->requisition.height = 0;
widget->allocation.x = -1;
widget->allocation.y = -1;
widget->allocation.width = 1;
widget->allocation.height = 1;
widget->window = NULL;
widget->parent = NULL;
GTK_WIDGET_SET_FLAGS (widget,
GTK_SENSITIVE |
GTK_PARENT_SENSITIVE |
(composite_child_stack ? GTK_COMPOSITE_CHILD : 0) |
GTK_DOUBLE_BUFFERED);
widget->style = gtk_widget_peek_style ();
gtk_style_ref (widget->style);
colormap = gtk_widget_peek_colormap ();
if (colormap != gtk_widget_get_default_colormap ())
gtk_widget_set_colormap (widget, colormap);
}
/**
* gtk_widget_new:
* @type: type ID of the widget to create
* @first_property_name: name of first property to set
* @Varargs: value of first property, followed by more properties, NULL-terminated
*
* This is a convenience function for creating a widget and setting
* its properties in one go. For example you might write:
* gtk_widget_new (GTK_TYPE_LABEL, "label", "Hello World", "xalign",
* 0.0, NULL) to create a left-aligned label. Equivalent to
* gtk_object_new(), but returns a widget so you don't have to
* cast the object yourself.
*
* Return value: a new #GtkWidget of type @widget_type
**/
GtkWidget*
gtk_widget_new (GtkType type,
const gchar *first_property_name,
...)
{
GtkWidget *widget;
va_list var_args;
g_return_val_if_fail (gtk_type_is_a (type, GTK_TYPE_WIDGET), NULL);
va_start (var_args, first_property_name);
widget = g_object_new_valist (type, first_property_name, var_args);
va_end (var_args);
return widget;
}
/**
* gtk_widget_set:
* @widget: a #GtkWidget
* @first_property_name: name of first property to set
* @Varargs: value of first property, followed by more properties, NULL-terminated
*
* Like gtk_object_set() - there's no reason to use this instead of
* gtk_object_set().
**/
void
gtk_widget_set (GtkWidget *widget,
const gchar *first_property_name,
...)
{
va_list var_args;
g_return_if_fail (GTK_IS_WIDGET (widget));
va_start (var_args, first_property_name);
g_object_set_valist (G_OBJECT (widget), first_property_name, var_args);
va_end (var_args);
}
static inline void
gtk_widget_queue_clear_child (GtkWidget *widget)
{
GtkWidget *parent;
parent = widget->parent;
if (parent && GTK_WIDGET_DRAWABLE (parent))
gtk_widget_queue_clear_area (parent,
widget->allocation.x,
widget->allocation.y,
widget->allocation.width,
widget->allocation.height);
}
/**
* gtk_widget_unparent:
* @widget: a #GtkWidget
*
* This function is only for use in widget implementations.
* Should be called by implementations of the remove method
* on #GtkContainer, to dissociate a child from the container.
**/
void
gtk_widget_unparent (GtkWidget *widget)
{
GtkWidget *toplevel;
GtkWidget *old_parent;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
if (widget->parent == NULL)
return;
/* keep this function in sync with gtk_menu_detach()
*/
/* unset focused and default children properly, this code
* should eventually move into some gtk_window_unparent_branch() or
* similar function.
*/
toplevel = gtk_widget_get_toplevel (widget);
if (GTK_CONTAINER (widget->parent)->focus_child == widget)
{
gtk_container_set_focus_child (GTK_CONTAINER (widget->parent), NULL);
if (GTK_IS_WINDOW (toplevel))
{
GtkWidget *child;
child = GTK_WINDOW (toplevel)->focus_widget;
while (child && child != widget)
child = child->parent;
if (child == widget)
gtk_window_set_focus (GTK_WINDOW (toplevel), NULL);
}
}
if (GTK_IS_WINDOW (toplevel))
{
GtkWidget *child;
child = GTK_WINDOW (toplevel)->default_widget;
while (child && child != widget)
child = child->parent;
if (child == widget)
gtk_window_set_default (GTK_WINDOW (toplevel), NULL);
}
if (GTK_IS_RESIZE_CONTAINER (widget))
gtk_container_clear_resize_widgets (GTK_CONTAINER (widget));
/* Remove the widget and all its children from any ->resize_widgets list
* of all the parents in our branch. This code should move into gtkcontainer.c
* somwhen, since we mess around with ->resize_widgets, which is
* actually not of our business.
*
* Two ways to make this prettier:
* Write a g_slist_conditional_remove (GSList, gboolean (*)(gpointer))
* Change resize_widgets to a GList
*/
toplevel = widget->parent;
while (toplevel)
{
GSList *slist;
GSList *prev;
if (!GTK_CONTAINER (toplevel)->resize_widgets)
{
toplevel = toplevel->parent;
continue;
}
prev = NULL;
slist = GTK_CONTAINER (toplevel)->resize_widgets;
while (slist)
{
GtkWidget *child;
GtkWidget *parent;
GSList *last;
last = slist;
slist = last->next;
child = last->data;
parent = child;
while (parent && (parent != widget))
parent = parent->parent;
if (parent == widget)
{
GTK_PRIVATE_UNSET_FLAG (child, GTK_RESIZE_NEEDED);
if (prev)
prev->next = slist;
else
GTK_CONTAINER (toplevel)->resize_widgets = slist;
g_slist_free_1 (last);
}
else
prev = last;
}
toplevel = toplevel->parent;
}
gtk_widget_queue_clear_child (widget);
/* Reset the width and height here, to force reallocation if we
* get added back to a new parent. This won't work if our new
* allocation is smaller than 1x1 and we actually want a size of 1x1...
* (would 0x0 be OK here?)
*/
widget->allocation.width = 1;
widget->allocation.height = 1;
if (GTK_WIDGET_REALIZED (widget) && !GTK_WIDGET_IN_REPARENT (widget))
gtk_widget_unrealize (widget);
old_parent = widget->parent;
widget->parent = NULL;
gtk_widget_set_parent_window (widget, NULL);
gtk_signal_emit (GTK_OBJECT (widget), widget_signals[PARENT_SET], old_parent);
gtk_widget_propagate_hierarchy_changed (widget, NULL);
gtk_widget_unref (widget);
}
/**
* gtk_widget_destroy:
* @widget: a #GtkWidget
*
* Destroys a widget. Equivalent to gtk_object_destroy(), except that
* you don't have to cast the widget to #GtkObject. When a widget is
* destroyed, it will break any references it holds to other objects.
* If the widget is inside a container, the widget will be removed
* from the container. If the widget is a toplevel (derived from
* #GtkWindow), it will be removed from the list of toplevels, and the
* reference GTK+ holds to it will be removed. Removing a
* widget from its container or the list of toplevels results in the
* widget being finalized, unless you've added additional references
* to the widget with gtk_object_ref().
*
* In most cases, only toplevel widgets (windows) require explicit
* destruction, because when you destroy a toplevel its children will
* be destroyed as well.
*
**/
void
gtk_widget_destroy (GtkWidget *widget)
{
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
gtk_object_destroy ((GtkObject*) widget);
}
/**
* gtk_widget_destroyed:
* @widget: a #GtkWidget
* @widget_pointer: address of a variable that contains @widget
*
* This function sets *@widget_pointer to NULL if @widget_pointer !=
* NULL. It's intended to be used as a callback connected to the
* "destroy" signal of a widget. You connect gtk_widget_destroyed()
* as a signal handler, and pass the address of your widget variable
* as user data. Then when the widget is destroyed, the variable will
* be set to NULL. Useful for example to avoid multiple copies
* of the same dialog.
*
**/
void
gtk_widget_destroyed (GtkWidget *widget,
GtkWidget **widget_pointer)
{
/* Don't make any assumptions about the
* value of widget!
* Even check widget_pointer.
*/
if (widget_pointer)
*widget_pointer = NULL;
}
/**
* gtk_widget_show:
* @widget: a #GtkWidget
*
* Flags a widget to be displayed. Any widget that isn't shown will
* not appear on the screen. If you want to show all the widgets in a
* container, it's easier to call gtk_widget_show_all() on the
* container, instead of individually showing the widgets.
*
* Remember that you have to show the containers containing a widget,
* in addition to the widget itself, before it will appear onscreen.
*
* When a toplevel container is shown, it is immediately realized and
* mapped; other shown widgets are realized and mapped when their
* toplevel container is realized and mapped.
*
**/
void
gtk_widget_show (GtkWidget *widget)
{
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
if (!GTK_WIDGET_VISIBLE (widget))
{
if (!GTK_WIDGET_TOPLEVEL (widget))
gtk_widget_queue_resize (widget);
gtk_signal_emit (GTK_OBJECT (widget), widget_signals[SHOW]);
}
}
static void
gtk_widget_real_show (GtkWidget *widget)
{
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
if (!GTK_WIDGET_VISIBLE (widget))
{
GTK_WIDGET_SET_FLAGS (widget, GTK_VISIBLE);
if (widget->parent &&
GTK_WIDGET_MAPPED (widget->parent) &&
!GTK_WIDGET_MAPPED (widget))
gtk_widget_map (widget);
}
}
static void
gtk_widget_show_map_callback (GtkWidget *widget, GdkEvent *event, gint *flag)
{
*flag = TRUE;
gtk_signal_disconnect_by_data (GTK_OBJECT (widget), flag);
}
/**
* gtk_widget_show_now:
* @widget: a #GtkWidget
*
* Shows a widget. If the widget is an unmapped toplevel widget
* (i.e. a #GtkWindow that has not yet been shown), enter the main
* loop and wait for the window to actually be mapped. Be careful;
* because the main loop is running, anything can happen during
* this function.
**/
void
gtk_widget_show_now (GtkWidget *widget)
{
gint flag = FALSE;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
/* make sure we will get event */
if (!GTK_WIDGET_MAPPED (widget) &&
GTK_WIDGET_TOPLEVEL (widget))
{
gtk_widget_show (widget);
gtk_signal_connect (GTK_OBJECT (widget), "map_event",
GTK_SIGNAL_FUNC (gtk_widget_show_map_callback),
&flag);
while (!flag)
gtk_main_iteration();
}
else
gtk_widget_show (widget);
}
/**
* gtk_widget_hide:
* @widget: a #GtkWidget
*
* Reverses the effects of gtk_widget_show(), causing the widget to be
* hidden (invisible to the user).
**/
void
gtk_widget_hide (GtkWidget *widget)
{
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
if (GTK_WIDGET_VISIBLE (widget))
{
gtk_widget_ref (widget);
gtk_signal_emit (GTK_OBJECT (widget), widget_signals[HIDE]);
if (!GTK_WIDGET_TOPLEVEL (widget) && !GTK_OBJECT_DESTROYED (widget))
gtk_widget_queue_resize (widget);
gtk_widget_unref (widget);
}
}
static void
gtk_widget_real_hide (GtkWidget *widget)
{
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
if (GTK_WIDGET_VISIBLE (widget))
{
GTK_WIDGET_UNSET_FLAGS (widget, GTK_VISIBLE);
if (GTK_WIDGET_MAPPED (widget))
gtk_widget_unmap (widget);
}
}
/**
* gtk_widget_hide_on_delete:
* @widget: a #GtkWidget
*
* Utility function; intended to be connected to the "delete_event"
* signal on a #GtkWindow. The function calls gtk_widget_hide() on its
* argument, then returns %TRUE. If connected to "delete_event",
* the result is that clicking the window manager close button for
* will hide but not destroy the window. By default, GTK+ destroys
* windows when "delete_event" is received.
*
* Return value: %TRUE
**/
gboolean
gtk_widget_hide_on_delete (GtkWidget *widget)
{
g_return_val_if_fail (widget != NULL, FALSE);
g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
gtk_widget_hide (widget);
return TRUE;
}
/**
* gtk_widget_show_all:
* @widget: a #GtkWidget
*
* Recursively shows a widget, and any child widgets (if the widget is
* a container).
**/
void
gtk_widget_show_all (GtkWidget *widget)
{
GtkWidgetClass *class;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
class = GTK_WIDGET_GET_CLASS (widget);
if (class->show_all)
class->show_all (widget);
}
/**
* gtk_widget_hide_all:
* @widget: a #GtkWidget
*
* Recursively hides a widget and any child widgets.
**/
void
gtk_widget_hide_all (GtkWidget *widget)
{
GtkWidgetClass *class;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
class = GTK_WIDGET_GET_CLASS (widget);
if (class->hide_all)
class->hide_all (widget);
}
/**
* gtk_widget_map:
* @widget: a #GtkWidget
*
* This function is only for use in widget implementations. Causes
* a widget to be mapped if it isn't already.
*
**/
void
gtk_widget_map (GtkWidget *widget)
{
g_return_if_fail (GTK_IS_WIDGET (widget));
g_return_if_fail (GTK_WIDGET_VISIBLE (widget) == TRUE);
if (!GTK_WIDGET_MAPPED (widget))
{
if (!GTK_WIDGET_REALIZED (widget))
gtk_widget_realize (widget);
gtk_signal_emit (GTK_OBJECT (widget), widget_signals[MAP]);
if (GTK_WIDGET_NO_WINDOW (widget))
gtk_widget_queue_draw (widget);
}
}
/**
* gtk_widget_unmap:
* @widget: a #GtkWidget
*
* This function is only for use in widget implementations. Causes
* a widget to be unmapped if it's currently mapped.
*
**/
void
gtk_widget_unmap (GtkWidget *widget)
{
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
if (GTK_WIDGET_MAPPED (widget))
{
if (GTK_WIDGET_NO_WINDOW (widget))
gtk_widget_queue_clear_child (widget);
gtk_signal_emit (GTK_OBJECT (widget), widget_signals[UNMAP]);
}
}
/**
* gtk_widget_realize:
* @widget: a #GtkWidget
*
* Creates the GDK (windowing system) resources associated with a
* widget. For example, widget->window will be created when a widget
* is realized. Normally realization happens implicitly; if you show
* a widget and all its parent containers, then the widget will be
* realized and mapped automatically.
*
* Realizing a widget requires all
* the widget's parent widgets to be realized; calling
* gtk_widget_realize() realizes the widget's parents in addition to
* @widget itself. If a widget is not yet inside a toplevel window
* when you realize it, bad things will happen.
*
* This function is primarily used in widget implementations, and
* isn't very useful otherwise. Many times when you think you might
* need it, a better approach is to connect to a signal that will be
* called after the widget is realized automatically, such as
* "expose_event". Or simply gtk_signal_connect_after() to the
* "realize" signal.
*
**/
void
gtk_widget_realize (GtkWidget *widget)
{
gint events;
GdkExtensionMode mode;
GtkWidgetShapeInfo *shape_info;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
if (!GTK_WIDGET_REALIZED (widget))
{
/*
if (GTK_IS_CONTAINER (widget) && !GTK_WIDGET_NO_WINDOW (widget))
g_message ("gtk_widget_realize(%s)", gtk_type_name (GTK_WIDGET_TYPE (widget)));
*/
if (widget->parent == NULL &&
!GTK_WIDGET_TOPLEVEL (widget))
g_warning ("Calling gtk_widget_realize() on a widget that isn't "
"inside a toplevel window is not going to work very well. "
"Widgets must be inside a toplevel container before realizing them.");
if (widget->parent && !GTK_WIDGET_REALIZED (widget->parent))
gtk_widget_realize (widget->parent);
gtk_widget_ensure_style (widget);
gtk_signal_emit (GTK_OBJECT (widget), widget_signals[REALIZE]);
if (GTK_WIDGET_HAS_SHAPE_MASK (widget))
{
shape_info = gtk_object_get_data_by_id (GTK_OBJECT (widget), quark_shape_info);
gdk_window_shape_combine_mask (widget->window,
shape_info->shape_mask,
shape_info->offset_x,
shape_info->offset_y);
}
if (!GTK_WIDGET_NO_WINDOW (widget))
{
mode = gtk_widget_get_extension_events (widget);
if (mode != GDK_EXTENSION_EVENTS_NONE)
{
events = gtk_widget_get_events (widget);
gdk_input_set_extension_events (widget->window, events, mode);
}
}
}
}
/**
* gtk_widget_unrealize:
* @widget: a #GtkWidget
*
* This function is only useful in widget implementations.
* Causes a widget to be unrealized (frees all GDK resources
* associated with the widget, such as widget->window).
*
**/
void
gtk_widget_unrealize (GtkWidget *widget)
{
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
if (GTK_WIDGET_HAS_SHAPE_MASK (widget))
gtk_widget_shape_combine_mask (widget, NULL, -1, -1);
if (GTK_WIDGET_REALIZED (widget))
{
gtk_widget_ref (widget);
gtk_signal_emit (GTK_OBJECT (widget), widget_signals[UNREALIZE]);
GTK_WIDGET_UNSET_FLAGS (widget, GTK_REALIZED | GTK_MAPPED);
gtk_widget_unref (widget);
}
}
/*****************************************
* Draw queueing.
*****************************************/
/**
* gtk_widget_queue_draw_area:
* @widget: a #GtkWidget
* @x: x coordinate of upper-left corner of rectangle to redraw
* @y: y coordinate of upper-left corner of rectangle to redraw
* @width: width of region to draw
* @height: height of region to draw
*
* Invalidates the rectangular area of @widget defined by @x, @y,
* @width and @height by calling gdk_window_invalidate_rect() on the
* widget's window and all its child windows. Once the main loop
* becomes idle (after the current batch of events has been processed,
* roughly), the window will receive expose events for the union of
* all regions that have been invalidated.
*
* Normally you would only use this function in widget
* implementations. You might also use it, or
* gdk_window_invalidate_rect() directly, to schedule a redraw of a
* #GtkDrawingArea or some portion thereof.
*
* Frequently you can just call gdk_window_invalidate_rect() or
* gdk_window_invalidate_region() instead of this function. Those
* functions will invalidate only a single window, instead of the
* widget and all its children.
*
* The advantage of adding to the invalidated region compared to
* simply drawing immediately is efficiency; using an invalid region
* ensures that you only have to redraw one time.
*
**/
void
gtk_widget_queue_draw_area (GtkWidget *widget,
gint x,
gint y,
gint width,
gint height)
{
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
gtk_widget_queue_clear_area (widget, x, y, width, height);
}
/**
* gtk_widget_queue_draw:
* @widget: a #GtkWidget
*
* Equivalent to calling gtk_widget_queue_draw_area() for the
* entire area of a widget.
*
**/
void
gtk_widget_queue_draw (GtkWidget *widget)
{
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
gtk_widget_queue_clear (widget);
}
/* Invalidates the given area (allocation-relative-coordinates)
* in all of the widget's windows
*/
/**
* gtk_widget_queue_clear_area:
* @widget: a #GtkWidget
* @x: x coordinate of upper-left corner of rectangle to redraw
* @y: y coordinate of upper-left corner of rectangle to redraw
* @width: width of region to draw
* @height: height of region to draw
*
* DEPRECATED. This function is no longer different from
* gtk_widget_queue_draw_area(), though it once was. Now it just calls
* gtk_widget_queue_draw_area(). Originally
* gtk_widget_queue_clear_area() would force a redraw of the
* background for GTK_NO_WINDOW widgets, and
* gtk_widget_queue_draw_area() would not. Now both functions ensure
* the background will be redrawn.
*
**/
void
gtk_widget_queue_clear_area (GtkWidget *widget,
gint x,
gint y,
gint width,
gint height)
{
GdkRectangle invalid_rect;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
if (!(widget->window && gdk_window_is_viewable (widget->window)))
return;
/* Find the correct widget */
if (!GTK_WIDGET_NO_WINDOW (widget))
{
if (widget->parent)
{
/* Translate widget relative to window-relative */
gint wx, wy, wwidth, wheight;
gdk_window_get_position (widget->window, &wx, &wy);
x -= wx - widget->allocation.x;
y -= wy - widget->allocation.y;
gdk_window_get_size (widget->window, &wwidth, &wheight);
if (x + width <= 0 || y + height <= 0 ||
x >= wwidth || y >= wheight)
return;
if (x < 0)
{
width += x; x = 0;
}
if (y < 0)
{
height += y; y = 0;
}
if (x + width > wwidth)
width = wwidth - x;
if (y + height > wheight)
height = wheight - y;
}
}
invalid_rect.x = x;
invalid_rect.y = y;
invalid_rect.width = width;
invalid_rect.height = height;
gdk_window_invalidate_rect (widget->window, &invalid_rect, TRUE);
}
/**
* gtk_widget_queue_clear:
* @widget: a #GtkWidget
*
* DEPRECATED. Use gtk_widget_queue_draw() instead.
**/
void
gtk_widget_queue_clear (GtkWidget *widget)
{
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
if (widget->allocation.width || widget->allocation.height)
{
if (GTK_WIDGET_NO_WINDOW (widget))
gtk_widget_queue_clear_area (widget, widget->allocation.x,
widget->allocation.y,
widget->allocation.width,
widget->allocation.height);
else
gtk_widget_queue_clear_area (widget, 0, 0,
widget->allocation.width,
widget->allocation.height);
}
}
/**
* gtk_widget_queue_resize:
* @widget: a #GtkWidget
*
* This function is only for use in widget implementations.
* Flags a widget to have its size renegotiated; should
* be called when a widget for some reason has a new size request.
* For example, when you change the text in a #GtkLabel, #GtkLabel
* queues a resize to ensure there's enough space for the new text.
*
**/
void
gtk_widget_queue_resize (GtkWidget *widget)
{
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
if (GTK_IS_RESIZE_CONTAINER (widget))
gtk_container_clear_resize_widgets (GTK_CONTAINER (widget));
gtk_widget_queue_clear (widget);
if (widget->parent)
gtk_container_queue_resize (GTK_CONTAINER (widget->parent));
else if (GTK_WIDGET_TOPLEVEL (widget) && GTK_IS_CONTAINER (widget))
gtk_container_queue_resize (GTK_CONTAINER (widget));
}
/**
* gtk_widget_draw:
* @widget: a #GtkWidget
* @area: area to draw
*
* DEPRECATED. In GTK+ 1.2, this function would immediately render the
* region @area of a widget, by invoking the virtual draw method of a
* widget. In GTK+ 2.0, the draw method is gone, and instead
* gtk_widget_draw() simply invalidates the specified region of the
* widget, then updates the invalid region of the widget immediately.
* Usually you don't want to update the region immediately for
* performance reasons, so in general gtk_widget_queue_draw_area() is
* a better choice if you want to draw a region of a widget.
*
**/
void
gtk_widget_draw (GtkWidget *widget,
GdkRectangle *area)
{
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
if (GTK_WIDGET_DRAWABLE (widget))
{
if (area)
gtk_widget_queue_draw_area (widget,
area->x, area->y,
area->width, area->height);
else
gtk_widget_queue_draw (widget);
gdk_window_process_updates (widget->window, TRUE);
}
}
/**
* gtk_widget_size_request:
* @widget: a #GtkWidget
* @requisition: a #GtkRequisition to be filled in
*
* This function is only used when implementing a #GtkContainer subclass.
* Obtains the preferred size of a widget. The container uses this
* information to arrange its child widgets and decide what size allocations
* to give them with gtk_widget_size_allocate().
**/
void
gtk_widget_size_request (GtkWidget *widget,
GtkRequisition *requisition)
{
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
#ifdef G_ENABLE_DEBUG
if (requisition == &widget->requisition)
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.");
#endif /* G_ENABLE_DEBUG */
gtk_widget_ref (widget);
gtk_widget_ensure_style (widget);
gtk_signal_emit (GTK_OBJECT (widget), widget_signals[SIZE_REQUEST],
&widget->requisition);
if (requisition)
gtk_widget_get_child_requisition (widget, requisition);
gtk_widget_unref (widget);
}
/**
* gtk_widget_get_child_requisition:
* @widget: a #GtkWidget
* @requisition: a #GtkRequisition to be filled in
*
* This function is only for use in widget implementations. Obtains
* @widget->requisition, unless someone has forced a particular
* geometry on the widget (e.g. with gtk_widget_set_usize()), in which
* case it returns that geometry instead of the widget's requisition.
**/
void
gtk_widget_get_child_requisition (GtkWidget *widget,
GtkRequisition *requisition)
{
GtkWidgetAuxInfo *aux_info;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
*requisition = widget->requisition;
aux_info =_gtk_widget_get_aux_info (widget, FALSE);
if (aux_info)
{
if (aux_info->width > 0)
requisition->width = aux_info->width;
if (aux_info->height > 0)
requisition->height = aux_info->height;
}
}
/**
* gtk_widget_size_allocate:
* @widget: a #GtkWidget
* @allocation: position and size to be allocated to @widget
*
* This function is only used by #GtkContainer subclasses, to assign a size
* and position to their child widgets.
*
**/
void
gtk_widget_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
GtkWidgetAuxInfo *aux_info;
GtkAllocation real_allocation;
gboolean needs_draw = FALSE;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
real_allocation = *allocation;
aux_info =_gtk_widget_get_aux_info (widget, FALSE);
if (aux_info)
{
if (aux_info->x != -1)
real_allocation.x = aux_info->x;
if (aux_info->y != -1)
real_allocation.y = aux_info->y;
}
real_allocation.width = MAX (real_allocation.width, 1);
real_allocation.height = MAX (real_allocation.height, 1);
if (real_allocation.width < 0 || real_allocation.height < 0)
{
g_warning ("gtk_widget_size_allocate(): attempt to allocate widget with width %d and height %d",
real_allocation.width,
real_allocation.height);
real_allocation.width = 1;
real_allocation.height = 1;
}
if (GTK_WIDGET_NO_WINDOW (widget))
{
if (widget->allocation.x != real_allocation.x ||
widget->allocation.y != real_allocation.y ||
widget->allocation.width != real_allocation.width ||
widget->allocation.height != real_allocation.height)
{
gtk_widget_queue_clear_child (widget);
needs_draw = TRUE;
}
}
else if (widget->allocation.width != real_allocation.width ||
widget->allocation.height != real_allocation.height)
{
needs_draw = TRUE;
}
if (GTK_IS_RESIZE_CONTAINER (widget))
gtk_container_clear_resize_widgets (GTK_CONTAINER (widget));
gtk_signal_emit (GTK_OBJECT (widget), widget_signals[SIZE_ALLOCATE], &real_allocation);
if (needs_draw)
{
gtk_widget_queue_draw (widget);
if (widget->parent && GTK_CONTAINER (widget->parent)->reallocate_redraws)
gtk_widget_queue_draw (widget->parent);
}
}
static void
gtk_widget_real_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
widget->allocation = *allocation;
if (GTK_WIDGET_REALIZED (widget) &&
!GTK_WIDGET_NO_WINDOW (widget))
{
gdk_window_move_resize (widget->window,
allocation->x, allocation->y,
allocation->width, allocation->height);
}
}
static void
gtk_widget_stop_add_accelerator (GtkWidget *widget)
{
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
gtk_signal_emit_stop (GTK_OBJECT (widget), widget_signals[ADD_ACCELERATOR]);
}
static void
gtk_widget_stop_remove_accelerator (GtkWidget *widget)
{
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
gtk_signal_emit_stop (GTK_OBJECT (widget), widget_signals[REMOVE_ACCELERATOR]);
}
void
gtk_widget_lock_accelerators (GtkWidget *widget)
{
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
if (!gtk_widget_accelerators_locked (widget))
{
gtk_signal_connect (GTK_OBJECT (widget),
"add_accelerator",
GTK_SIGNAL_FUNC (gtk_widget_stop_add_accelerator),
NULL);
gtk_signal_connect (GTK_OBJECT (widget),
"remove_accelerator",
GTK_SIGNAL_FUNC (gtk_widget_stop_remove_accelerator),
NULL);
}
}
void
gtk_widget_unlock_accelerators (GtkWidget *widget)
{
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
if (gtk_widget_accelerators_locked (widget))
{
gtk_signal_disconnect_by_func (GTK_OBJECT (widget),
GTK_SIGNAL_FUNC (gtk_widget_stop_add_accelerator),
NULL);
gtk_signal_disconnect_by_func (GTK_OBJECT (widget),
GTK_SIGNAL_FUNC (gtk_widget_stop_remove_accelerator),
NULL);
}
}
gboolean
gtk_widget_accelerators_locked (GtkWidget *widget)
{
g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
return gtk_signal_handler_pending_by_func (GTK_OBJECT (widget),
widget_signals[ADD_ACCELERATOR],
TRUE,
GTK_SIGNAL_FUNC (gtk_widget_stop_add_accelerator),
NULL) > 0;
}
void
gtk_widget_add_accelerator (GtkWidget *widget,
const gchar *accel_signal,
GtkAccelGroup *accel_group,
guint accel_key,
guint accel_mods,
GtkAccelFlags accel_flags)
{
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
g_return_if_fail (accel_group != NULL);
gtk_accel_group_add (accel_group,
accel_key,
accel_mods,
accel_flags,
(GtkObject*) widget,
accel_signal);
}
void
gtk_widget_remove_accelerator (GtkWidget *widget,
GtkAccelGroup *accel_group,
guint accel_key,
guint accel_mods)
{
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
g_return_if_fail (accel_group != NULL);
gtk_accel_group_remove (accel_group,
accel_key,
accel_mods,
(GtkObject*) widget);
}
void
gtk_widget_remove_accelerators (GtkWidget *widget,
const gchar *accel_signal,
gboolean visible_only)
{
GSList *slist;
guint signal_id;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
g_return_if_fail (accel_signal != NULL);
signal_id = gtk_signal_lookup (accel_signal, GTK_OBJECT_TYPE (widget));
g_return_if_fail (signal_id != 0);
slist = gtk_accel_group_entries_from_object (GTK_OBJECT (widget));
while (slist)
{
GtkAccelEntry *ac_entry;
ac_entry = slist->data;
slist = slist->next;
if (ac_entry->accel_flags & GTK_ACCEL_VISIBLE &&
ac_entry->signal_id == signal_id)
gtk_widget_remove_accelerator (GTK_WIDGET (widget),
ac_entry->accel_group,
ac_entry->accelerator_key,
ac_entry->accelerator_mods);
}
}
guint
gtk_widget_accelerator_signal (GtkWidget *widget,
GtkAccelGroup *accel_group,
guint accel_key,
guint accel_mods)
{
GtkAccelEntry *ac_entry;
g_return_val_if_fail (widget != NULL, 0);
g_return_val_if_fail (GTK_IS_WIDGET (widget), 0);
g_return_val_if_fail (accel_group != NULL, 0);
ac_entry = gtk_accel_group_get_entry (accel_group, accel_key, accel_mods);
if (ac_entry && ac_entry->object == (GtkObject*) widget)
return ac_entry->signal_id;
return 0;
}
gboolean
gtk_widget_activate_mnemonic (GtkWidget *widget,
gboolean group_cycling)
{
gboolean handled;
g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
group_cycling = group_cycling != FALSE;
if (!GTK_WIDGET_IS_SENSITIVE (widget))
handled = TRUE;
else
gtk_signal_emit (GTK_OBJECT (widget),
widget_signals[ACTIVATE_MNEMONIC],
group_cycling,
&handled);
return handled;
}
static gboolean
gtk_widget_real_activate_mnemonic (GtkWidget *widget,
gboolean group_cycling)
{
if (!group_cycling && GTK_WIDGET_GET_CLASS (widget)->activate_signal)
gtk_widget_activate (widget);
else if (GTK_WIDGET_CAN_FOCUS (widget))
gtk_widget_grab_focus (widget);
else
{
g_warning ("widget `%s' isn't suitable for mnemonic activation",
G_OBJECT_TYPE_NAME (widget));
gdk_beep ();
}
return TRUE;
}
static gboolean
gtk_widget_real_key_press_event (GtkWidget *widget,
GdkEventKey *event)
{
gboolean handled = FALSE;
g_return_val_if_fail (widget != NULL, handled);
g_return_val_if_fail (GTK_IS_WIDGET (widget), handled);
g_return_val_if_fail (event != NULL, handled);
if (!handled)
handled = gtk_bindings_activate (GTK_OBJECT (widget),
event->keyval,
event->state);
return handled;
}
static gboolean
gtk_widget_real_key_release_event (GtkWidget *widget,
GdkEventKey *event)
{
gboolean handled = FALSE;
g_return_val_if_fail (widget != NULL, handled);
g_return_val_if_fail (GTK_IS_WIDGET (widget), handled);
g_return_val_if_fail (event != NULL, handled);
if (!handled)
handled = gtk_bindings_activate (GTK_OBJECT (widget),
event->keyval,
event->state | GDK_RELEASE_MASK);
return handled;
}
static gboolean
gtk_widget_real_focus_in_event (GtkWidget *widget,
GdkEventFocus *event)
{
GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);
gtk_widget_queue_draw (widget);
return FALSE;
}
static gboolean
gtk_widget_real_focus_out_event (GtkWidget *widget,
GdkEventFocus *event)
{
GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS);
gtk_widget_queue_draw (widget);
return FALSE;
}
/**
* gtk_widget_event:
* @widget: a #GtkWidget
* @event: a #GdkEvent
*
* Rarely-used function. This function is used to emit
* the event signals on a widget (those signals should never
* be emitted without using this function to do so).
* If you want to synthesize an event though, don't use this function;
* instead, use gtk_main_do_event() so the event will behave as if
* it were in the event queue. Don't synthesize expose events; instead,
* use gdk_window_invalidate_rect() to invalidate a region of the
* window.
*
* Return value: return from the event signal emission (%TRUE if the event was handled)
**/
gboolean
gtk_widget_event (GtkWidget *widget,
GdkEvent *event)
{
g_return_val_if_fail (widget != NULL, TRUE);
g_return_val_if_fail (GTK_IS_WIDGET (widget), TRUE);
if (event->type == GDK_EXPOSE)
{
g_warning ("Events of type GDK_EXPOSE cannot be synthesized. To get "
"the same effect, call gdk_window_invalidate_rect/region(), "
"followed by gdk_window_process_updates().");
return TRUE;
}
return gtk_widget_event_internal (widget, event);
}
/**
* gtk_widget_send_expose:
* @widget: a #GtkWidget
* @event: a expose #GdkEvent
*
* Very rarely-used function. This function is used to emit
* an expose event signals on a widget. This function is not
* normally used directly. The only time it is used is when
* propagating an expose event to a child NO_WINDOW widget, and
* that is normally done using gtk_container_propagate_expose.
*
* If you want to force an area of a window to be redrawn,
* use gdk_window_invalidate_rect() or gdk_window_invalidate_region().
* To cause the redraw to be done immediately, follow that call
* with a call to gdk_window_procss_updates().
*
* Return value: return from the event signal emission (%TRUE if the event was handled)
**/
gint
gtk_widget_send_expose (GtkWidget *widget,
GdkEvent *event)
{
g_return_val_if_fail (widget != NULL, TRUE);
g_return_val_if_fail (GTK_IS_WIDGET (widget), TRUE);
g_return_val_if_fail (event != NULL, TRUE);
g_return_val_if_fail (event->type == GDK_EXPOSE, TRUE);
if (event->type != GDK_EXPOSE)
return TRUE;
return gtk_widget_event_internal (widget, event);
}
static gint
gtk_widget_event_internal (GtkWidget *widget,
GdkEvent *event)
{
gboolean return_val;
gint signal_num;
gtk_widget_ref (widget);
return_val = FALSE;
gtk_signal_emit (GTK_OBJECT (widget), widget_signals[EVENT], event,
&return_val);
if (return_val || GTK_OBJECT_DESTROYED (widget))
goto out;
switch (event->type)
{
case GDK_NOTHING:
signal_num = -1;
break;
case GDK_BUTTON_PRESS:
case GDK_2BUTTON_PRESS:
case GDK_3BUTTON_PRESS:
signal_num = BUTTON_PRESS_EVENT;
break;
case GDK_SCROLL:
signal_num = SCROLL_EVENT;
break;
case GDK_BUTTON_RELEASE:
signal_num = BUTTON_RELEASE_EVENT;
break;
case GDK_MOTION_NOTIFY:
signal_num = MOTION_NOTIFY_EVENT;
break;
case GDK_DELETE:
signal_num = DELETE_EVENT;
break;
case GDK_DESTROY:
signal_num = DESTROY_EVENT;
break;
case GDK_KEY_PRESS:
signal_num = KEY_PRESS_EVENT;
break;
case GDK_KEY_RELEASE:
signal_num = KEY_RELEASE_EVENT;
break;
case GDK_ENTER_NOTIFY:
signal_num = ENTER_NOTIFY_EVENT;
break;
case GDK_LEAVE_NOTIFY:
signal_num = LEAVE_NOTIFY_EVENT;
break;
case GDK_FOCUS_CHANGE:
if (event->focus_change.in)
signal_num = FOCUS_IN_EVENT;
else
signal_num = FOCUS_OUT_EVENT;
break;
case GDK_CONFIGURE:
signal_num = CONFIGURE_EVENT;
break;
case GDK_MAP:
signal_num = MAP_EVENT;
break;
case GDK_UNMAP:
signal_num = UNMAP_EVENT;
break;
case GDK_WINDOW_STATE:
signal_num = WINDOW_STATE_EVENT;
break;
case GDK_PROPERTY_NOTIFY:
signal_num = PROPERTY_NOTIFY_EVENT;
break;
case GDK_SELECTION_CLEAR:
signal_num = SELECTION_CLEAR_EVENT;
break;
case GDK_SELECTION_REQUEST:
signal_num = SELECTION_REQUEST_EVENT;
break;
case GDK_SELECTION_NOTIFY:
signal_num = SELECTION_NOTIFY_EVENT;
break;
case GDK_PROXIMITY_IN:
signal_num = PROXIMITY_IN_EVENT;
break;
case GDK_PROXIMITY_OUT:
signal_num = PROXIMITY_OUT_EVENT;
break;
case GDK_NO_EXPOSE:
signal_num = NO_EXPOSE_EVENT;
break;
case GDK_CLIENT_EVENT:
signal_num = CLIENT_EVENT;
break;
case GDK_EXPOSE:
if (!event->any.window) /* Why is this necessary */
goto out;
signal_num = EXPOSE_EVENT;
break;
case GDK_VISIBILITY_NOTIFY:
signal_num = VISIBILITY_NOTIFY_EVENT;
break;
default:
g_warning ("could not determine signal number for event: %d", event->type);
goto out;
}
if (signal_num != -1)
gtk_signal_emit (GTK_OBJECT (widget), widget_signals[signal_num], event, &return_val);
return_val |= GTK_OBJECT_DESTROYED (widget);
out:
gtk_widget_unref (widget);
return return_val;
}
/**
* gtk_widget_activate:
* @widget: a #GtkWidget that's activatable
*
* For widgets that can be "activated" (buttons, menu items, etc.)
* this function activates them. Activation is what happens when you
* press Enter on a widget during key navigation; clicking a button,
* selecting a menu item, etc. If @widget isn't activatable,
* the function returns %FALSE.
*
* Return value: %TRUE if the widget was activatable
**/
gboolean
gtk_widget_activate (GtkWidget *widget)
{
g_return_val_if_fail (widget != NULL, FALSE);
g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
if (WIDGET_CLASS (widget)->activate_signal)
{
/* FIXME: we should eventually check the signals signature here */
gtk_signal_emit (GTK_OBJECT (widget), WIDGET_CLASS (widget)->activate_signal);
return TRUE;
}
else
return FALSE;
}
/**
* gtk_widget_set_scroll_adjustments:
* @widget: a #GtkWidget
* @hadjustment: an adjustment for horizontal scrolling, or %NULL
* @vadjustment: an adjustment for vertical scrolling, or %NULL
*
* For widgets that support scrolling, sets the scroll adjustments and
* returns %TRUE. For widgets that don't support scrolling, does
* nothing and returns %FALSE. Widgets that don't support scrolling
* can be scrolled by placing them in a #GtkViewport, which does
* support scrolling.
*
* Return value: %TRUE if the widget supports scrolling
**/
gboolean
gtk_widget_set_scroll_adjustments (GtkWidget *widget,
GtkAdjustment *hadjustment,
GtkAdjustment *vadjustment)
{
g_return_val_if_fail (widget != NULL, FALSE);
g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
if (hadjustment)
g_return_val_if_fail (GTK_IS_ADJUSTMENT (hadjustment), FALSE);
if (vadjustment)
g_return_val_if_fail (GTK_IS_ADJUSTMENT (vadjustment), FALSE);
if (WIDGET_CLASS (widget)->set_scroll_adjustments_signal)
{
/* FIXME: we should eventually check the signals signature here */
gtk_signal_emit (GTK_OBJECT (widget),
WIDGET_CLASS (widget)->set_scroll_adjustments_signal,
hadjustment, vadjustment);
return TRUE;
}
else
return FALSE;
}
/*****************************************
* gtk_widget_reparent_container_child:
* assistent function to gtk_widget_reparent
*
* arguments:
*
* results:
*****************************************/
static void
gtk_widget_reparent_container_child (GtkWidget *widget,
gpointer client_data)
{
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
g_return_if_fail (client_data != NULL);
if (GTK_WIDGET_NO_WINDOW (widget))
{
if (widget->window)
gdk_window_unref (widget->window);
widget->window = (GdkWindow*) client_data;
if (widget->window)
gdk_window_ref (widget->window);
if (GTK_IS_CONTAINER (widget))
gtk_container_forall (GTK_CONTAINER (widget),
gtk_widget_reparent_container_child,
client_data);
}
else
gdk_window_reparent (widget->window,
(GdkWindow*) client_data, 0, 0);
}
/**
* gtk_widget_reparent:
* @widget: a #GtkWidget
* @new_parent: a #GtkContainer to move the widget into
*
* Moves a widget from one #GtkContainer to another, handling reference
* count issues to avoid destroying the widget.
*
**/
void
gtk_widget_reparent (GtkWidget *widget,
GtkWidget *new_parent)
{
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
g_return_if_fail (new_parent != NULL);
g_return_if_fail (GTK_IS_CONTAINER (new_parent));
g_return_if_fail (widget->parent != NULL);
if (widget->parent != new_parent)
{
/* First try to see if we can get away without unrealizing
* the widget as we reparent it. if so we set a flag so
* that gtk_widget_unparent doesn't unrealize widget
*/
if (GTK_WIDGET_REALIZED (widget) && GTK_WIDGET_REALIZED (new_parent))
GTK_PRIVATE_SET_FLAG (widget, GTK_IN_REPARENT);
gtk_widget_ref (widget);
gtk_container_remove (GTK_CONTAINER (widget->parent), widget);
gtk_container_add (GTK_CONTAINER (new_parent), widget);
gtk_widget_unref (widget);
if (GTK_WIDGET_IN_REPARENT (widget))
{
GTK_PRIVATE_UNSET_FLAG (widget, GTK_IN_REPARENT);
gtk_widget_reparent_container_child (widget,
gtk_widget_get_parent_window (widget));
}
}
}
/**
* gtk_widget_popup:
* @widget:
* @x:
* @y:
*
* DEPRECATED. Completely useless function as far as we know.
* Probably does something bad.
*
**/
void
gtk_widget_popup (GtkWidget *widget,
gint x,
gint y)
{
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
if (!GTK_WIDGET_VISIBLE (widget))
{
if (!GTK_WIDGET_REALIZED (widget))
gtk_widget_realize (widget);
if (!GTK_WIDGET_NO_WINDOW (widget))
gdk_window_move (widget->window, x, y);
gtk_widget_show (widget);
}
}
/**
* gtk_widget_intersect:
* @widget: a #GtkWidget
* @area: a rectangle
* @intersection: rectangle to store intersection of @widget and @area
*
* Computes the intersection of a @widget's area and @area, storing
* the intersection in @intersection, and returns %TRUE if there was
* an intersection. @intersection may be %NULL if you're only
* interested in whether there was an intersection.
*
* Return value: %TRUE if there was an intersection
**/
gboolean
gtk_widget_intersect (GtkWidget *widget,
GdkRectangle *area,
GdkRectangle *intersection)
{
GdkRectangle *dest;
GdkRectangle tmp;
gint return_val;
g_return_val_if_fail (widget != NULL, FALSE);
g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
g_return_val_if_fail (area != NULL, FALSE);
if (intersection)
dest = intersection;
else
dest = &tmp;
return_val = gdk_rectangle_intersect (&widget->allocation, area, dest);
if (return_val && intersection && !GTK_WIDGET_NO_WINDOW (widget))
{
intersection->x -= widget->allocation.x;
intersection->y -= widget->allocation.y;
}
return return_val;
}
/**
* gtk_widget_region_intersect:
* @widget: a #GtkWidget
* @region: a #GdkRegion, in the same coordinate system as
* widget->allocation. That is, relative to widget->window
* for NO_WINDOW widgets; relative to the parent window
* of widget->window for widgets with their own window.
* @returns: A newly allocated region holding the intersection of @widget
* and @region. The coordinates of the return value are
* relative to widget->window for NO_WINDOW widgets, and
* relative to the parent window of widget->window for
* widgets with their own window.
*
* Computes the intersection of a @widget's area and @region, returning
* the intersection. The result may be empty, use #gdk_region_empty to
* check.
**/
GdkRegion *
gtk_widget_region_intersect (GtkWidget *widget,
GdkRegion *region)
{
GdkRegion *dest;
g_return_val_if_fail (widget != NULL, NULL);
g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
g_return_val_if_fail (region != NULL, NULL);
dest = gdk_region_rectangle (&widget->allocation);
gdk_region_intersect (dest, region);
return dest;
}
/**
* gtk_widget_grab_focus:
* @widget: a #GtkWidget
*
* Causes @widget to have the keyboard focus for the #GtkWindow it's
* inside. @widget must be a focusable widget, such as a #GtkEntry;
* something like #GtkFrame won't work. (More precisely, it must have the
* #GTK_CAN_FOCUS flag set.)
*
**/
void
gtk_widget_grab_focus (GtkWidget *widget)
{
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
gtk_signal_emit (GTK_OBJECT (widget), widget_signals[GRAB_FOCUS]);
}
static void
reset_focus_recurse (GtkWidget *widget,
gpointer data)
{
if (GTK_IS_CONTAINER (widget))
{
GtkContainer *container;
container = GTK_CONTAINER (widget);
gtk_container_set_focus_child (container, NULL);
gtk_container_foreach (container,
reset_focus_recurse,
NULL);
}
}
static void
gtk_widget_real_grab_focus (GtkWidget *focus_widget)
{
g_return_if_fail (focus_widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (focus_widget));
if (GTK_WIDGET_CAN_FOCUS (focus_widget))
{
GtkWidget *toplevel;
GtkWidget *widget;
/* clear the current focus setting, break if the current widget
* is the focus widget's parent, since containers above that will
* be set by the next loop.
*/
toplevel = gtk_widget_get_toplevel (focus_widget);
if (GTK_IS_WINDOW (toplevel))
{
widget = GTK_WINDOW (toplevel)->focus_widget;
if (widget == focus_widget)
{
/* We call gtk_window_set_focus() here so that the
* toplevel window can request the focus if necessary.
* This is needed when the toplevel is a GtkPlug
*/
if (!GTK_WIDGET_HAS_FOCUS (widget))
gtk_window_set_focus (GTK_WINDOW (toplevel), focus_widget);
return;
}
if (widget)
{
while (widget->parent && widget->parent != focus_widget->parent)
{
widget = widget->parent;
gtk_container_set_focus_child (GTK_CONTAINER (widget), NULL);
}
}
}
else if (toplevel != focus_widget)
{
/* gtk_widget_grab_focus() operates on a tree without window...
* actually, this is very questionable behaviour.
*/
gtk_container_foreach (GTK_CONTAINER (toplevel),
reset_focus_recurse,
NULL);
}
/* now propagate the new focus up the widget tree and finally
* set it on the window
*/
widget = focus_widget;
while (widget->parent)
{
gtk_container_set_focus_child (GTK_CONTAINER (widget->parent), widget);
widget = widget->parent;
}
if (GTK_IS_WINDOW (widget))
gtk_window_set_focus (GTK_WINDOW (widget), focus_widget);
}
}
/**
* gtk_widget_is_focus:
* @widget: a #GtkWidget
*
* Determines if the widget is the focus widget within its
* toplevel. (This does not mean that the HAS_FOCUS flag is
* necessarily set; HAS_FOCUS will only be set if the
* toplevel widget additionally has the global input focus.)
*
* Return value: %TRUE if the widget is the focus widget.
**/
gboolean
gtk_widget_is_focus (GtkWidget *widget)
{
GtkWidget *toplevel;
g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
toplevel = gtk_widget_get_toplevel (widget);
if (GTK_IS_WINDOW (toplevel))
return widget == GTK_WINDOW (toplevel)->focus_widget;
else
return FALSE;
}
/**
* gtk_widget_grab_default:
* @widget: a #GtkWidget
*
* Causes @widget to become the default widget. @widget must have the
* #GTK_CAN_DEFAULT flag set; typically you have to set this flag
* yourself by calling GTK_WIDGET_SET_FLAGS (@widget,
* GTK_CAN_DEFAULT). The default widget is activated when the user
* presses Enter in a window. Default widgets must be activatable,
* that is, gtk_widget_activate() should affect them.
*
**/
void
gtk_widget_grab_default (GtkWidget *widget)
{
GtkWidget *window;
GtkType window_type;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
g_return_if_fail (GTK_WIDGET_CAN_DEFAULT (widget));
window_type = GTK_TYPE_WINDOW;
window = widget->parent;
while (window && !gtk_type_is_a (GTK_WIDGET_TYPE (window), window_type))
window = window->parent;
if (window && gtk_type_is_a (GTK_WIDGET_TYPE (window), window_type))
gtk_window_set_default (GTK_WINDOW (window), widget);
else
g_warning("gtk_widget_grab_default() called on a widget not within a GtkWindow");
}
/**
* gtk_widget_set_name:
* @widget: a #GtkWidget
* @name: name for the widget
*
* Widgets can be named, which allows you to refer to them from a
* gtkrc file. You can apply a style to widgets with a particular name
* in the gtkrc file. See the documentation for gtkrc files (on the
* same page as the docs for #GtkRcStyle).
*
**/
void
gtk_widget_set_name (GtkWidget *widget,
const gchar *name)
{
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
if (widget->name)
g_free (widget->name);
widget->name = g_strdup (name);
if (GTK_WIDGET_RC_STYLE (widget))
gtk_widget_set_rc_style (widget);
}
/**
* gtk_widget_get_name:
* @widget: a #GtkWidget
*
* Retrieves the name of a widget. The return value should not be
* freed. See gtk_widget_set_name() for the significance of widget
* names.
*
* Return value: name of the widget
**/
G_CONST_RETURN gchar*
gtk_widget_get_name (GtkWidget *widget)
{
g_return_val_if_fail (widget != NULL, NULL);
g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
if (widget->name)
return widget->name;
return gtk_type_name (GTK_WIDGET_TYPE (widget));
}
/**
* gtk_widget_set_state:
* @widget: a #GtkWidget
* @state: new state for @widget
*
* This function is for use in widget implementations. Sets the state
* of a widget (insensitive, prelighted, etc.) Usually you should set
* the state using wrapper functions such as gtk_widget_set_sensitive().
*
**/
void
gtk_widget_set_state (GtkWidget *widget,
GtkStateType state)
{
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
if (state == GTK_WIDGET_STATE (widget))
return;
if (state == GTK_STATE_INSENSITIVE)
gtk_widget_set_sensitive (widget, FALSE);
else
{
GtkStateData data;
data.state = state;
data.state_restoration = FALSE;
data.use_forall = FALSE;
if (widget->parent)
data.parent_sensitive = (GTK_WIDGET_IS_SENSITIVE (widget->parent) != FALSE);
else
data.parent_sensitive = TRUE;
gtk_widget_propagate_state (widget, &data);
if (GTK_WIDGET_DRAWABLE (widget))
gtk_widget_queue_clear (widget);
}
}
void
gtk_widget_set_app_paintable (GtkWidget *widget,
gboolean app_paintable)
{
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
app_paintable = (app_paintable != FALSE);
if (GTK_WIDGET_APP_PAINTABLE (widget) != app_paintable)
{
if (app_paintable)
GTK_WIDGET_SET_FLAGS (widget, GTK_APP_PAINTABLE);
else
GTK_WIDGET_UNSET_FLAGS (widget, GTK_APP_PAINTABLE);
if (GTK_WIDGET_DRAWABLE (widget))
gtk_widget_queue_clear (widget);
}
}
/**
* gtk_widget_set_double_buffered:
* @widget: a #GtkWidget
* @double_buffered: %TRUE to double-buffer a widget
*
* Widgets are double buffered by default; you can use this function
* to turn off the buffering. "Double buffered" simply means that
* gdk_window_begin_paint() and gdk_window_end_paint() are called
* automatically around expose events sent to the
* widget. gdk_window_begin_paint() diverts all drawing to a widget's
* window to an offscreen buffer, and gdk_window_end_paint() draws the
* buffer to the screen. The result is that users see the window
* update in one smooth step, and don't see individual graphics
* primitives being rendered.
*
* In very simple terms, double buffered widgets don't flicker,
* so you would only use this function to turn off double buffering
* if you had special needs and really knew what you were doing.
*
**/
void
gtk_widget_set_double_buffered (GtkWidget *widget,
gboolean double_buffered)
{
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
if (double_buffered)
GTK_WIDGET_SET_FLAGS (widget, GTK_DOUBLE_BUFFERED);
else
GTK_WIDGET_UNSET_FLAGS (widget, GTK_DOUBLE_BUFFERED);
}
/**
* gtk_widget_set_sensitive:
* @widget: a @widget
* @sensitive: %TRUE to make the widget sensitive
*
* Sets the sensitivity of a widget. A widget is sensitive if the user
* can interact with it. Insensitive widgets are "grayed out" and the
* user can't interact with them. Insensitive widgets are known as
* "inactive" in some other toolkits.
*
**/
void
gtk_widget_set_sensitive (GtkWidget *widget,
gboolean sensitive)
{
GtkStateData data;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
sensitive = (sensitive != FALSE);
if (sensitive == (GTK_WIDGET_SENSITIVE (widget) != FALSE))
return;
if (sensitive)
{
GTK_WIDGET_SET_FLAGS (widget, GTK_SENSITIVE);
data.state = GTK_WIDGET_SAVED_STATE (widget);
}
else
{
GTK_WIDGET_UNSET_FLAGS (widget, GTK_SENSITIVE);
data.state = GTK_WIDGET_STATE (widget);
}
data.state_restoration = TRUE;
data.use_forall = TRUE;
if (widget->parent)
data.parent_sensitive = (GTK_WIDGET_IS_SENSITIVE (widget->parent) != FALSE);
else
data.parent_sensitive = TRUE;
gtk_widget_propagate_state (widget, &data);
if (GTK_WIDGET_DRAWABLE (widget))
gtk_widget_queue_clear (widget);
}
/**
* gtk_widget_set_parent:
* @widget: a #GtkWidget
* @parent: parent container
*
* This function is useful only when implementing subclasses of #GtkContainer.
* Sets the container as the parent of @widget, and takes care of
* some details such as updating the state and style of the child
* to reflect its new location. The opposite function is
* gtk_widget_unparent().
*
**/
void
gtk_widget_set_parent (GtkWidget *widget,
GtkWidget *parent)
{
GtkStateData data;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
g_return_if_fail (widget->parent == NULL);
g_return_if_fail (!GTK_WIDGET_TOPLEVEL (widget));
g_return_if_fail (parent != NULL);
g_return_if_fail (GTK_IS_WIDGET (parent));
g_return_if_fail (widget != parent);
/* keep this function in sync with gtk_menu_attach_to_widget()
*/
gtk_widget_ref (widget);
gtk_object_sink (GTK_OBJECT (widget));
widget->parent = parent;
if (GTK_WIDGET_STATE (parent) != GTK_STATE_NORMAL)
data.state = GTK_WIDGET_STATE (parent);
else
data.state = GTK_WIDGET_STATE (widget);
data.state_restoration = FALSE;
data.parent_sensitive = (GTK_WIDGET_IS_SENSITIVE (parent) != FALSE);
data.use_forall = GTK_WIDGET_IS_SENSITIVE (parent) != GTK_WIDGET_IS_SENSITIVE (widget);
gtk_widget_propagate_state (widget, &data);
gtk_widget_set_style_recurse (widget, NULL);
gtk_signal_emit (GTK_OBJECT (widget), widget_signals[PARENT_SET], NULL);
gtk_widget_propagate_hierarchy_changed (widget, NULL);
}
/*****************************************
* Widget styles
* see docs/styles.txt
*****************************************/
/**
* gtk_widget_set_style:
* @widget: a #GtkWidget
* @style: a #GtkStyle
*
* Sets the #GtkStyle for a widget (widget->style). You probably don't
* want to use this function; it interacts badly with themes, because
* themes work by replacing the #GtkStyle. Instead, use
* gtk_widget_modify_style().
*
**/
void
gtk_widget_set_style (GtkWidget *widget,
GtkStyle *style)
{
GtkStyle *default_style;
gboolean initial_emission;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
g_return_if_fail (style != NULL);
initial_emission = !GTK_WIDGET_RC_STYLE (widget) && !GTK_WIDGET_USER_STYLE (widget);
GTK_WIDGET_UNSET_FLAGS (widget, GTK_RC_STYLE);
GTK_PRIVATE_SET_FLAG (widget, GTK_USER_STYLE);
default_style = gtk_object_get_data_by_id (GTK_OBJECT (widget), quark_saved_default_style);
if (!default_style)
{
gtk_style_ref (widget->style);
gtk_object_set_data_by_id (GTK_OBJECT (widget), quark_saved_default_style, widget->style);
}
gtk_widget_set_style_internal (widget, style, initial_emission);
}
/**
* gtk_widget_ensure_style:
* @widget: a #GtkWidget
*
* Ensures that @widget has a style (widget->style). Not a very useful
* function; most of the time, if you want the style, the widget is
* realized, and realized widgets are guaranteed to have a style
* already.
*
**/
void
gtk_widget_ensure_style (GtkWidget *widget)
{
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
if (!GTK_WIDGET_USER_STYLE (widget) &&
!GTK_WIDGET_RC_STYLE (widget))
gtk_widget_set_rc_style (widget);
}
/**
* gtk_widget_set_rc_style:
* @widget: a #GtkWidget
*
*
**/
void
gtk_widget_set_rc_style (GtkWidget *widget)
{
GtkStyle *saved_style;
GtkStyle *new_style;
gboolean initial_emission;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
initial_emission = !GTK_WIDGET_RC_STYLE (widget) && !GTK_WIDGET_USER_STYLE (widget);
GTK_PRIVATE_UNSET_FLAG (widget, GTK_USER_STYLE);
GTK_WIDGET_SET_FLAGS (widget, GTK_RC_STYLE);
saved_style = gtk_object_get_data_by_id (GTK_OBJECT (widget), quark_saved_default_style);
new_style = gtk_rc_get_style (widget);
if (new_style)
{
if (!saved_style)
{
gtk_style_ref (widget->style);
gtk_object_set_data_by_id (GTK_OBJECT (widget), quark_saved_default_style, widget->style);
}
gtk_widget_set_style_internal (widget, new_style, initial_emission);
}
else
{
if (saved_style)
{
g_assert (initial_emission == FALSE); /* FIXME: remove this line */
gtk_object_remove_data_by_id (GTK_OBJECT (widget), quark_saved_default_style);
gtk_widget_set_style_internal (widget, saved_style, initial_emission);
gtk_style_unref (saved_style);
}
else
{
if (initial_emission)
gtk_widget_set_style_internal (widget, widget->style, TRUE);
}
}
}
void
gtk_widget_restore_default_style (GtkWidget *widget)
{
GtkStyle *default_style;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
GTK_PRIVATE_UNSET_FLAG (widget, GTK_USER_STYLE);
default_style = gtk_object_get_data_by_id (GTK_OBJECT (widget), quark_saved_default_style);
if (default_style)
{
gtk_object_remove_data_by_id (GTK_OBJECT (widget), quark_saved_default_style);
gtk_widget_set_style_internal (widget, default_style, FALSE);
gtk_style_unref (default_style);
}
}
/**
* gtk_widget_get_style:
* @widget: a #GtkWidget
*
* Simply an accessor function that returns widget->style.
*
* Return value: the widget's #GtkStyle
**/
GtkStyle*
gtk_widget_get_style (GtkWidget *widget)
{
g_return_val_if_fail (widget != NULL, NULL);
g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
return widget->style;
}
/**
* gtk_widget_modify_style:
* @widget: a #GtkWidget
* @style: the #GtkRcStyle holding the style modifications
*
* Modify style values on the widget. Modifications made using this
* technique take precendence over style values set via an RC file,
* however, they will be overriden if a style is explicitely set on
* the widget using gtk_widget_set_style(). The #GtkRcStyle structure
* is designed so each field can either be set or unset, so it is
* possible, using this function, to modify some style values and
* leave the others unchanged.
*
* Note that modifications made with this function are not cumulative
* with previous calls to gtk_widget_modify_style() or with such
* functions as gtk_widget_modify_fg(). If you wish to retain
* previous values, you must first call gtk_widget_get_modifier_style(),
* make your modifications to the returned style, then call
* gtk_widget_modify_style() with that style. On the other hand,
* if you first call gtk_widget_modify_style(), subsequent calls
* to such functions gtk_widget_modify_fg() will be have a cumulative
* effect with the inital modifications.
**/
void
gtk_widget_modify_style (GtkWidget *widget,
GtkRcStyle *style)
{
GtkRcStyle *old_style;
g_return_if_fail (GTK_IS_RC_STYLE (style));
old_style = gtk_object_get_data_by_id (GTK_OBJECT (widget),
quark_rc_style);
if (style != old_style)
gtk_object_set_data_by_id_full (GTK_OBJECT (widget),
quark_rc_style,
gtk_rc_style_copy (style),
(GtkDestroyNotify)gtk_rc_style_unref);
if (GTK_WIDGET_RC_STYLE (widget))
gtk_widget_set_rc_style (widget);
}
/**
* gtk_widget_get_modifier_style:
* @widget: a #GtkWidget
*
* Return the current modifier style for the widget. (As set by
* gtk_widget_modify_style().) If no style has previously set, a new
* #GtkRcStyle will be created with all values unset, and set as the
* modifier style for the widget. If you make changes to this rc
* style, you must call gtk_widget_modify_style(), passing in the
* returned rc style, to make sure that your changes take effect.
*
* Return value: the modifier style for the widget. This rc style is
* owned by the widget. If you want to keep a pointer to value this
* around, you must add a refcount using gtk_rc_style_ref().
**/
GtkRcStyle *
gtk_widget_get_modifier_style (GtkWidget *widget)
{
GtkRcStyle *rc_style;
rc_style = gtk_object_get_data_by_id (GTK_OBJECT (widget),
quark_rc_style);
if (!rc_style)
{
rc_style = gtk_rc_style_new();
gtk_object_set_data_by_id_full (GTK_OBJECT (widget),
quark_rc_style,
rc_style,
(GtkDestroyNotify)gtk_rc_style_unref);
}
return rc_style;
}
static void
gtk_widget_modify_color_component (GtkWidget *widget,
GtkRcFlags component,
GtkStateType state,
GdkColor *color)
{
GtkRcStyle *rc_style = gtk_widget_get_modifier_style (widget);
switch (component)
{
case GTK_RC_FG:
rc_style->fg[state] = *color;
break;
case GTK_RC_BG:
rc_style->bg[state] = *color;
break;
case GTK_RC_TEXT:
rc_style->text[state] = *color;
break;
case GTK_RC_BASE:
rc_style->base[state] = *color;
break;
default:
g_assert_not_reached();
}
rc_style->color_flags[state] |= component;
if (GTK_WIDGET_RC_STYLE (widget))
gtk_widget_set_rc_style (widget);
}
/**
* gtk_widget_modify_fg:
* @widget: a #GtkWidget
* @state: the state for which to set the foreground color.
* @color: the color to assign (does not need to be allocated)
*
* Set the foreground color for a widget in a particular state. All
* other style values are left untouched. See also
* gtk_widget_modify_style().
**/
void
gtk_widget_modify_fg (GtkWidget *widget,
GtkStateType state,
GdkColor *color)
{
g_return_if_fail (GTK_IS_WIDGET (widget));
g_return_if_fail (state >= GTK_STATE_NORMAL && state <= GTK_STATE_INSENSITIVE);
g_return_if_fail (color != NULL);
gtk_widget_modify_color_component (widget, GTK_RC_FG, state, color);
}
/**
* gtk_widget_modify_bg:
* @widget: a #GtkWidget
* @state: the state for which to set the foreground color.
* @color: the color to assign (does not need to be allocated)
*
* Set the background color for a widget in a particular state. All
* other style values are left untouched. See also
* gtk_widget_modify_style().
**/
void
gtk_widget_modify_bg (GtkWidget *widget,
GtkStateType state,
GdkColor *color)
{
g_return_if_fail (GTK_IS_WIDGET (widget));
g_return_if_fail (state >= GTK_STATE_NORMAL && state <= GTK_STATE_INSENSITIVE);
g_return_if_fail (color != NULL);
gtk_widget_modify_color_component (widget, GTK_RC_BG, state, color);
}
/**
* gtk_widget_modify_base:
* @widget: a #GtkWidget
* @state: the state for which to set the foreground color.
* @color: the color to assign (does not need to be allocated)
*
* Set the text color for a widget in a particular state. All other
* style values are left untouched. The text color is the foreground
* color used along with the base color (see gtk_widget_modify_base)
* for widgets such as #GtkEntry and #GtkTextView. See also
* gtk_widget_modify_style().
**/
void
gtk_widget_modify_text (GtkWidget *widget,
GtkStateType state,
GdkColor *color)
{
g_return_if_fail (GTK_IS_WIDGET (widget));
g_return_if_fail (state >= GTK_STATE_NORMAL && state <= GTK_STATE_INSENSITIVE);
g_return_if_fail (color != NULL);
gtk_widget_modify_color_component (widget, GTK_RC_TEXT, state, color);
}
/**
* gtk_widget_modify_base:
* @widget: a #GtkWidget
* @state: the state for which to set the foreground color.
* @color: the color to assign (does not need to be allocated)
*
* Set the text color for a widget in a particular state.
* All other style values are left untouched. The base color
* is the background color used along with the text color
* (see gtk_widget_modify_text) for widgets such as #GtkEntry
* and #GtkTextView. See also gtk_widget_modify_style().
**/
void
gtk_widget_modify_base (GtkWidget *widget,
GtkStateType state,
GdkColor *color)
{
g_return_if_fail (GTK_IS_WIDGET (widget));
g_return_if_fail (state >= GTK_STATE_NORMAL && state <= GTK_STATE_INSENSITIVE);
g_return_if_fail (color != NULL);
gtk_widget_modify_color_component (widget, GTK_RC_BASE, state, color);
}
/**
* gtk_widget_modify_font:
* @widget: a #GtkWidget
* @font_desc: the font description to use
*
* Set the font to use for a widget. All other style values are left
* untouched. See also gtk_widget_modify_style().
**/
void
gtk_widget_modify_font (GtkWidget *widget,
PangoFontDescription *font_desc)
{
GtkRcStyle *rc_style;
g_return_if_fail (GTK_IS_WIDGET (widget));
g_return_if_fail (font_desc != NULL);
rc_style = gtk_widget_get_modifier_style (widget);
if (rc_style->font_desc)
pango_font_description_free (rc_style->font_desc);
rc_style->font_desc = pango_font_description_copy (font_desc);
if (GTK_WIDGET_RC_STYLE (widget))
gtk_widget_set_rc_style (widget);
}
static void
gtk_widget_direction_changed (GtkWidget *widget,
GtkTextDirection previous_direction)
{
gtk_widget_queue_resize (widget);
}
static void
gtk_widget_style_set (GtkWidget *widget,
GtkStyle *previous_style)
{
if (GTK_WIDGET_REALIZED (widget) &&
!GTK_WIDGET_NO_WINDOW (widget))
gtk_style_set_background (widget->style, widget->window, widget->state);
}
static void
gtk_widget_set_style_internal (GtkWidget *widget,
GtkStyle *style,
gboolean initial_emission)
{
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
g_return_if_fail (style != NULL);
if (widget->style != style || initial_emission)
{
PangoContext *context = gtk_widget_peek_pango_context (widget);
if (context)
pango_context_set_font_description (context, style->font_desc);
}
if (widget->style != style)
{
GtkStyle *previous_style;
if (GTK_WIDGET_REALIZED (widget))
{
gtk_widget_reset_shapes (widget);
gtk_style_detach (widget->style);
}
previous_style = widget->style;
widget->style = style;
gtk_style_ref (widget->style);
if (GTK_WIDGET_REALIZED (widget))
widget->style = gtk_style_attach (widget->style, widget->window);
gtk_signal_emit (GTK_OBJECT (widget),
widget_signals[STYLE_SET],
initial_emission ? NULL : previous_style);
gtk_style_unref (previous_style);
if (widget->parent && !initial_emission)
{
GtkRequisition old_requisition;
old_requisition = widget->requisition;
gtk_widget_size_request (widget, NULL);
if ((old_requisition.width != widget->requisition.width) ||
(old_requisition.height != widget->requisition.height))
gtk_widget_queue_resize (widget);
else if (GTK_WIDGET_DRAWABLE (widget))
gtk_widget_queue_clear (widget);
}
}
else if (initial_emission)
{
gtk_signal_emit (GTK_OBJECT (widget),
widget_signals[STYLE_SET],
NULL);
}
}
static void
gtk_widget_set_style_recurse (GtkWidget *widget,
gpointer client_data)
{
if (GTK_WIDGET_RC_STYLE (widget))
gtk_widget_set_rc_style (widget);
if (GTK_IS_CONTAINER (widget))
gtk_container_forall (GTK_CONTAINER (widget),
gtk_widget_set_style_recurse,
NULL);
}
static void
gtk_widget_propagate_hierarchy_changed (GtkWidget *widget,
gpointer client_data)
{
gboolean new_anchored;
new_anchored = widget->parent && GTK_WIDGET_ANCHORED (widget->parent);
if (GTK_WIDGET_ANCHORED (widget) != new_anchored)
{
gtk_widget_ref (widget);
if (new_anchored)
GTK_PRIVATE_SET_FLAG (widget, GTK_ANCHORED);
else
GTK_PRIVATE_UNSET_FLAG (widget, GTK_ANCHORED);
g_signal_emit (GTK_OBJECT (widget), widget_signals[HIERARCHY_CHANGED], 0);
if (GTK_IS_CONTAINER (widget))
gtk_container_forall (GTK_CONTAINER (widget),
gtk_widget_propagate_hierarchy_changed,
NULL);
gtk_widget_unref (widget);
}
}
void
gtk_widget_reset_rc_styles (GtkWidget *widget)
{
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
gtk_widget_set_style_recurse (widget, NULL);
}
void
gtk_widget_set_default_style (GtkStyle *style)
{
if (style != gtk_default_style)
{
if (gtk_default_style)
gtk_style_unref (gtk_default_style);
gtk_default_style = style;
if (gtk_default_style)
gtk_style_ref (gtk_default_style);
}
}
GtkStyle*
gtk_widget_get_default_style (void)
{
if (!gtk_default_style)
{
gtk_default_style = gtk_style_new ();
gtk_style_ref (gtk_default_style);
}
return gtk_default_style;
}
void
gtk_widget_push_style (GtkStyle *style)
{
g_return_if_fail (style != NULL);
gtk_style_ref (style);
style_stack = g_slist_prepend (style_stack, style);
}
static GtkStyle*
gtk_widget_peek_style (void)
{
if (style_stack)
return (GtkStyle*) style_stack->data;
else
return gtk_widget_get_default_style ();
}
void
gtk_widget_pop_style (void)
{
GSList *tmp;
if (style_stack)
{
tmp = style_stack;
style_stack = style_stack->next;
gtk_style_unref ((GtkStyle*) tmp->data);
g_slist_free_1 (tmp);
}
}
static PangoContext *
gtk_widget_peek_pango_context (GtkWidget *widget)
{
return gtk_object_get_data_by_id (GTK_OBJECT (widget), quark_pango_context);
}
/**
* gtk_widget_get_pango_context:
* @widget: a #GtkWidget
*
* Get a #PangoContext with the appropriate colormap, font description
* and base direction for this widget. Unlike the context returned
* by gtk_widget_create_pango_context(), this context is owned by
* the widget (it can be used as long as widget exists), and will
* be updated to match any changes to the widget's attributes.
*
* If you create and keep a #PangoLayout using this context, you must
* deal with changes to the context by calling pango_layout_context_changed()
* on the layout in response to the ::style_set and ::direction_set signals
* for the widget.
*
* Return value: the #PangoContext for the widget.
**/
PangoContext *
gtk_widget_get_pango_context (GtkWidget *widget)
{
PangoContext *context;
g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
context = gtk_object_get_data_by_id (GTK_OBJECT (widget), quark_pango_context);
if (!context)
{
context = gtk_widget_create_pango_context (GTK_WIDGET (widget));
gtk_object_set_data_by_id_full (GTK_OBJECT (widget), quark_pango_context, context,
(GDestroyNotify) g_object_unref);
}
return context;
}
/**
* gtk_widget_create_pango_context:
* @widget: a #PangoWidget
*
* Create a new pango context with the appropriate colormap,
* font description, and base direction for drawing text for
* this widget. See also gtk_widget_get_pango_context()
*
* Return value: the new #PangoContext
**/
PangoContext *
gtk_widget_create_pango_context (GtkWidget *widget)
{
PangoContext *context;
char *lang;
g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
context = gdk_pango_context_get ();
gdk_pango_context_set_colormap (context, gtk_widget_get_colormap (widget));
pango_context_set_base_dir (context,
gtk_widget_get_direction (widget) == GTK_TEXT_DIR_LTR ?
PANGO_DIRECTION_LTR : PANGO_DIRECTION_RTL);
pango_context_set_font_description (context, widget->style->font_desc);
lang = gtk_get_default_language ();
pango_context_set_lang (context, lang);
g_free (lang);
return context;
}
/**
* gtk_widget_create_pango_layout:
* @widget: a #PangoWidget
* @text: text to set on the layout (can be %NULL)
*
* Create a new #PangoLayout with the appropriate colormap,
* font description, and base direction for drawing text for
* this widget.
*
* If you keep a #PangoLayout created in this way around, in order
* notify the layout of changes to the base direction or font of this
* widget, you must call pango_layout_context_changed() in response to
* the ::style_set and ::direction_set signals for the widget.
*
* Return value: the new #PangoLayout
**/
PangoLayout *
gtk_widget_create_pango_layout (GtkWidget *widget,
const gchar *text)
{
PangoLayout *layout;
PangoContext *context;
g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
context = gtk_widget_get_pango_context (widget);
layout = pango_layout_new (context);
if (text)
pango_layout_set_text (layout, text, -1);
return layout;
}
/**
* gtk_widget_render_icon:
* @widget: a #GtkWidget
* @stock_id: a stock ID
* @size: a stock size
* @detail: render detail to pass to theme engine
*
* A convenience function that uses the theme engine and RC file
* settings for @widget to look up @stock_id and render it to
* a pixbuf. @stock_id should be a stock icon ID such as
* #GTK_STOCK_OPEN or #GTK_STOCK_BUTTON_OK. @size should be a size
* such as #GTK_ICON_SIZE_MENU. @detail should be a string that
* identifies the widget or code doing the rendering, so that
* theme engines can special-case rendering for that widget or code.
*
* Return value: a new pixbuf, or %NULL if the stock ID wasn't known
**/
GdkPixbuf*
gtk_widget_render_icon (GtkWidget *widget,
const gchar *stock_id,
GtkIconSize size,
const gchar *detail)
{
GtkIconSet *icon_set;
GdkPixbuf *retval;
g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
g_return_val_if_fail (stock_id != NULL, NULL);
g_return_val_if_fail (size > GTK_ICON_SIZE_INVALID, NULL);
gtk_widget_ensure_style (widget);
icon_set = gtk_style_lookup_icon_set (widget->style, stock_id);
if (icon_set == NULL)
return NULL;
retval = gtk_icon_set_render_icon (icon_set,
widget->style,
gtk_widget_get_direction (widget),
GTK_WIDGET_STATE (widget),
size,
widget,
detail);
return retval;
}
/*************************************************************
* gtk_widget_set_parent_window:
* Set a non default parent window for widget
*
* arguments:
* widget:
* parent_window
*
* results:
*************************************************************/
void
gtk_widget_set_parent_window (GtkWidget *widget,
GdkWindow *parent_window)
{
GdkWindow *old_parent_window;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
old_parent_window = gtk_object_get_data_by_id (GTK_OBJECT (widget),
quark_parent_window);
if (parent_window != old_parent_window)
{
gtk_object_set_data_by_id (GTK_OBJECT (widget), quark_parent_window,
parent_window);
if (old_parent_window)
gdk_window_unref (old_parent_window);
if (parent_window)
gdk_window_ref (parent_window);
}
}
/*************************************************************
* gtk_widget_get_parent_window:
* Get widget's parent window
*
* arguments:
* widget:
*
* results:
* parent window
*************************************************************/
GdkWindow *
gtk_widget_get_parent_window (GtkWidget *widget)
{
GdkWindow *parent_window;
g_return_val_if_fail (widget != NULL, NULL);
g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
g_return_val_if_fail (widget->parent != NULL, NULL);
parent_window = gtk_object_get_data_by_id (GTK_OBJECT (widget),
quark_parent_window);
return (parent_window != NULL) ? parent_window : widget->parent->window;
}
/* Update the position from aux_info. Used from gtk_widget_set_uposition
* and gtk_widget_set_arg().
*/
static void
gtk_widget_do_uposition (GtkWidget *widget)
{
GtkWidgetAuxInfo *aux_info =_gtk_widget_get_aux_info (widget, FALSE);
if (GTK_IS_WINDOW (widget) && aux_info->x_set && aux_info->y_set)
gtk_window_reposition (GTK_WINDOW (widget), aux_info->x, aux_info->y);
if (GTK_WIDGET_VISIBLE (widget) && widget->parent)
gtk_widget_size_allocate (widget, &widget->allocation);
}
/**
* gtk_widget_set_uposition:
* @widget: a #GtkWidget
* @x: x position; -1 to unset x; -2 to leave x unchanged
* @y: y position; -1 to unset y; -2 to leave y unchanged
*
*
* Sets the position of a widget. The funny "u" in the name comes from
* the "user position" hint specified by the X window system, and
* exists for legacy reasons. This function doesn't work if a widget
* is inside a container; it's only really useful on #GtkWindow.
*
* Don't use this function to center dialogs over the main application
* window; most window managers will do the centering on your behalf
* if you call gtk_window_set_transient_for(), and it's really not
* possible to get the centering to work correctly in all cases from
* application code. But if you insist, use gtk_window_set_position()
* to set #GTK_WIN_POS_CENTER_ON_PARENT, don't do the centering
* manually.
*
* Note that although x and y can be individually unset, the position
* is not honoured unless both x and y are set.
**/
void
gtk_widget_set_uposition (GtkWidget *widget,
gint x,
gint y)
{
GtkWidgetAuxInfo *aux_info;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
aux_info =_gtk_widget_get_aux_info (widget, TRUE);
/* keep this in sync with gtk_window_set_location() */
if (x > -2)
{
if (x == -1)
aux_info->x_set = FALSE;
else
{
aux_info->x_set = TRUE;
aux_info->x = x;
}
}
if (y > -2)
{
if (y == -1)
aux_info->y_set = FALSE;
else
{
aux_info->y_set = TRUE;
aux_info->y = y;
}
}
gtk_widget_do_uposition (widget);
}
/**
* gtk_widget_set_usize:
* @widget: a #GtkWidget
* @width: minimum width, or -1 to unset
* @height: minimum height, or -1 to unset
*
* Sets the minimum size of a widget; that is, the widget's size
* request will be @width by @height. You can use this function to
* force a widget to be either larger or smaller than it is. The
* strange "usize" name dates from the early days of GTK+, and derives
* from X Window System terminology. In many cases,
* gtk_window_set_default_size() is a better choice for toplevel
* windows than this function; setting the default size will still
* allow users to shrink the window. Setting the usize will force them
* to leave the window at least as large as the usize. When dealing
* with window sizes, gtk_window_set_geometry_hints() can be a useful
* function as well.
*
* Note the inherent danger of setting any fixed size - themes,
* translations into other languages, different fonts, and user action
* can all change the appropriate size for a given widget. So, it's
* basically impossible to hardcode a size that will always be
* correct.
*
**/
void
gtk_widget_set_usize (GtkWidget *widget,
gint width,
gint height)
{
GtkWidgetAuxInfo *aux_info;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
aux_info =_gtk_widget_get_aux_info (widget, TRUE);
if (width > -2)
aux_info->width = width;
if (height > -2)
aux_info->height = height;
if (GTK_WIDGET_VISIBLE (widget))
gtk_widget_queue_resize (widget);
}
/**
* gtk_widget_set_events:
* @widget: a #GtkWidget
* @events: event mask
*
* Sets the event mask (see #GdkEventMask) for a widget. The event
* mask determines which events a widget will receive. Keep in mind
* that different widgets have different default event masks, and by
* changing the event mask you may disrupt a widget's functionality,
* so be careful. This function must be called while a widget is
* unrealized. Consider gtk_widget_add_events() for widgets that are
* already realized, or if you want to preserve the existing event
* mask. This function can't be used with #GTK_NO_WINDOW widgets;
* to get events on those widgets, place them inside a #GtkEventBox
* and receive events on the event box.
*
**/
void
gtk_widget_set_events (GtkWidget *widget,
gint events)
{
gint *eventp;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
g_return_if_fail (!GTK_WIDGET_NO_WINDOW (widget));
g_return_if_fail (!GTK_WIDGET_REALIZED (widget));
eventp = gtk_object_get_data_by_id (GTK_OBJECT (widget), quark_event_mask);
if (events)
{
if (!eventp)
eventp = g_new (gint, 1);
*eventp = events;
gtk_object_set_data_by_id (GTK_OBJECT (widget), quark_event_mask, eventp);
}
else if (eventp)
{
g_free (eventp);
gtk_object_remove_data_by_id (GTK_OBJECT (widget), quark_event_mask);
}
}
/**
* gtk_widget_add_events:
* @widget: a #GtkWidget
* @events: an event mask, see #GdkEventMask
*
* Adds the events in the bitfield @events to the event mask for
* @widget. See gtk_widget_set_events() for details.
*
**/
void
gtk_widget_add_events (GtkWidget *widget,
gint events)
{
gint *eventp;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
g_return_if_fail (!GTK_WIDGET_NO_WINDOW (widget));
eventp = gtk_object_get_data_by_id (GTK_OBJECT (widget), quark_event_mask);
if (events)
{
if (!eventp)
{
eventp = g_new (gint, 1);
*eventp = 0;
}
*eventp |= events;
gtk_object_set_data_by_id (GTK_OBJECT (widget), quark_event_mask, eventp);
}
else if (eventp)
{
g_free (eventp);
gtk_object_remove_data_by_id (GTK_OBJECT (widget), quark_event_mask);
}
if (GTK_WIDGET_REALIZED (widget))
{
gdk_window_set_events (widget->window,
gdk_window_get_events (widget->window) | events);
}
}
/**
* gtk_widget_set_extension_events:
* @widget: a #GtkWidget
* @mode: bitfield of extension events to receive
*
* Sets the extension events mask to @mode. See #GdkExtensionMode
* and gdk_input_set_extension_events().
*
**/
void
gtk_widget_set_extension_events (GtkWidget *widget,
GdkExtensionMode mode)
{
GdkExtensionMode *modep;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
modep = gtk_object_get_data_by_id (GTK_OBJECT (widget), quark_extension_event_mode);
if (!modep)
modep = g_new (GdkExtensionMode, 1);
*modep = mode;
gtk_object_set_data_by_id (GTK_OBJECT (widget), quark_extension_event_mode, modep);
}
/**
* gtk_widget_get_toplevel:
* @widget: a #GtkWidget
*
* This function returns the topmost widget in the container hierarchy
* @widget is a part of. If @widget has no parent widgets, it will be
* returned as the topmost widget. No reference will be added to the
* returned widget; it should not be unreferenced.
*
* Note the difference in behavior vs. gtk_widget_get_ancestor();
* gtk_widget_get_ancestor (widget, GTK_TYPE_WINDOW) would return
* %NULL if @widget wasn't inside a toplevel window.
*
* Return value: the topmost ancestor of @widget, or @widget itself if there's no ancestor
**/
GtkWidget*
gtk_widget_get_toplevel (GtkWidget *widget)
{
g_return_val_if_fail (widget != NULL, NULL);
g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
while (widget->parent)
widget = widget->parent;
return widget;
}
/**
* gtk_widget_get_ancestor:
* @widget: a #GtkWidget
* @widget_type: ancestor type
*
* Gets the first ancestor of @widget with type @widget_type. For example,
* gtk_widget_get_ancestor (widget, GTK_TYPE_BOX) gets the first #GtkBox that's
* an ancestor of @widget. No reference will be added to the returned widget;
* it should not be unreferenced.
*
* Return value: the ancestor widget, or %NULL if not found
**/
GtkWidget*
gtk_widget_get_ancestor (GtkWidget *widget,
GtkType widget_type)
{
g_return_val_if_fail (widget != NULL, NULL);
g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
while (widget && !gtk_type_is_a (GTK_WIDGET_TYPE (widget), widget_type))
widget = widget->parent;
if (!(widget && gtk_type_is_a (GTK_WIDGET_TYPE (widget), widget_type)))
return NULL;
return widget;
}
/**
* gtk_widget_get_colormap:
* @widget: a #GtkWidget
*
* Gets the colormap that will be used to render @widget. No reference will
* be added to the returned colormap; it should not be unreferenced.
*
* Return value: the colormap used by @widget
**/
GdkColormap*
gtk_widget_get_colormap (GtkWidget *widget)
{
GdkColormap *colormap;
g_return_val_if_fail (widget != NULL, NULL);
g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
if (widget->window)
{
colormap = gdk_window_get_colormap (widget->window);
/* If window was destroyed previously, we'll get NULL here */
if (colormap)
return colormap;
}
colormap = gtk_object_get_data_by_id (GTK_OBJECT (widget), quark_colormap);
if (colormap)
return colormap;
return gtk_widget_get_default_colormap ();
}
/**
* gtk_widget_get_visual:
* @widget: a #GtkWidget
*
* Gets the visual that will be used to render @widget.
*
* Return value: the visual for @widget
**/
GdkVisual*
gtk_widget_get_visual (GtkWidget *widget)
{
g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
return gdk_colormap_get_visual (gtk_widget_get_colormap (widget));
}
/**
* gtk_widget_set_colormap:
* @widget: a #GtkWidget
* @colormap: a colormap
*
* Set the colormap for the widget to the given value. Widget must not
* have been previously realized. This probably should only be used
* from an init() function (i.e. from the constructor for the widget).
*
**/
void
gtk_widget_set_colormap (GtkWidget *widget,
GdkColormap *colormap)
{
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
g_return_if_fail (!GTK_WIDGET_REALIZED (widget));
g_return_if_fail (GDK_IS_COLORMAP (colormap));
g_object_ref (G_OBJECT (colormap));
g_object_set_qdata_full (G_OBJECT (widget),
quark_colormap,
colormap,
(GtkDestroyNotify) g_object_unref);
}
/**
* gtk_widget_get_events:
* @widget: a #GtkWidget
*
* Returns the event mask for the widget (a bitfield containing flags
* from the #GdkEventMask enumeration). These are the events that the widget
* will receive.
*
* Return value: event mask for @widget
**/
gint
gtk_widget_get_events (GtkWidget *widget)
{
gint *events;
g_return_val_if_fail (widget != NULL, 0);
g_return_val_if_fail (GTK_IS_WIDGET (widget), 0);
events = gtk_object_get_data_by_id (GTK_OBJECT (widget), quark_event_mask);
if (events)
return *events;
return 0;
}
/**
* gtk_widget_get_extension_events:
* @widget: a #GtkWidget
*
* Retrieves the extension events the widget will receive; see
* gdk_input_set_extension_events().
*
* Return value: extension events for @widget
**/
GdkExtensionMode
gtk_widget_get_extension_events (GtkWidget *widget)
{
GdkExtensionMode *mode;
g_return_val_if_fail (widget != NULL, 0);
g_return_val_if_fail (GTK_IS_WIDGET (widget), 0);
mode = gtk_object_get_data_by_id (GTK_OBJECT (widget), quark_extension_event_mode);
if (mode)
return *mode;
return 0;
}
/**
* gtk_widget_get_pointer:
* @widget: a #GtkWidget
* @x: return location for the X coordinate, or %NULL
* @y: return location for the Y coordinate, or %NULL
*
* Obtains the location of the mouse pointer in widget coordinates.
* Widget coordinates are a bit odd; for historical reasons, they are
* defined as widget->window coordinates for widgets that are not
* #GTK_NO_WINDOW widgets, and are relative to widget->allocation.x,
* widget->allocation.y for widgets that are #GTK_NO_WINDOW widgets.
*
**/
void
gtk_widget_get_pointer (GtkWidget *widget,
gint *x,
gint *y)
{
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
if (x)
*x = -1;
if (y)
*y = -1;
if (GTK_WIDGET_REALIZED (widget))
{
gdk_window_get_pointer (widget->window, x, y, NULL);
if (GTK_WIDGET_NO_WINDOW (widget))
{
if (x)
*x -= widget->allocation.x;
if (y)
*y -= widget->allocation.y;
}
}
}
/**
* gtk_widget_is_ancestor:
* @widget: a #GtkWidget
* @ancestor: another #GtkWidget
*
* Determines whether @widget is somewhere inside @ancestor, possibly with
* intermediate containers.
*
* Return value: %TRUE if @ancestor contains @widget as a child, grandchild, great grandchild, etc.
**/
gboolean
gtk_widget_is_ancestor (GtkWidget *widget,
GtkWidget *ancestor)
{
g_return_val_if_fail (widget != NULL, FALSE);
g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
g_return_val_if_fail (ancestor != NULL, FALSE);
while (widget)
{
if (widget->parent == ancestor)
return TRUE;
widget = widget->parent;
}
return FALSE;
}
static GQuark quark_composite_name = 0;
void
gtk_widget_set_composite_name (GtkWidget *widget,
const gchar *name)
{
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
g_return_if_fail (GTK_WIDGET_COMPOSITE_CHILD (widget));
g_return_if_fail (name != NULL);
if (!quark_composite_name)
quark_composite_name = g_quark_from_static_string ("gtk-composite-name");
gtk_object_set_data_by_id_full (GTK_OBJECT (widget),
quark_composite_name,
g_strdup (name),
g_free);
}
gchar*
gtk_widget_get_composite_name (GtkWidget *widget)
{
g_return_val_if_fail (widget != NULL, NULL);
g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
if (GTK_WIDGET_COMPOSITE_CHILD (widget) && widget->parent)
return gtk_container_child_composite_name (GTK_CONTAINER (widget->parent),
widget);
else
return NULL;
}
void
gtk_widget_push_composite_child (void)
{
composite_child_stack++;
}
void
gtk_widget_pop_composite_child (void)
{
if (composite_child_stack)
composite_child_stack--;
}
/**
* gtk_widget_push_colormap:
* @cmap: a #GdkColormap
*
* Pushes @cmap onto a global stack of colormaps; the topmost
* colormap on the stack will be used to create all widgets.
* Remove @cmap with gtk_widget_pop_colormap(). There's little
* reason to use this function.
*
**/
void
gtk_widget_push_colormap (GdkColormap *cmap)
{
g_return_if_fail (cmap != NULL);
colormap_stack = g_slist_prepend (colormap_stack, cmap);
}
/**
* gtk_widget_pop_colormap:
*
* Removes a colormap pushed with gtk_widget_push_colormap().
*
**/
void
gtk_widget_pop_colormap (void)
{
GSList *tmp;
if (colormap_stack)
{
tmp = colormap_stack;
colormap_stack = colormap_stack->next;
g_slist_free_1 (tmp);
}
}
/**
* gtk_widget_set_default_colormap:
* @colormap: a #GdkColormap
*
* Sets the default colormap to use when creating widgets.
* gtk_widget_push_colormap() is a better function to use if
* you only want to affect a few widgets, rather than all widgets.
*
**/
void
gtk_widget_set_default_colormap (GdkColormap *colormap)
{
if (default_colormap != colormap)
{
if (default_colormap)
gdk_colormap_unref (default_colormap);
default_colormap = colormap;
if (default_colormap)
gdk_colormap_ref (default_colormap);
}
}
/**
* gtk_widget_get_default_colormap:
*
* Obtains the default colormap used to create widgets.
*
* Return value: default widget colormap
**/
GdkColormap*
gtk_widget_get_default_colormap (void)
{
if (!default_colormap)
gtk_widget_set_default_colormap (gdk_colormap_get_system ());
return default_colormap;
}
/**
* gtk_widget_get_default_visual:
*
* Obtains the visual of the default colormap. Not really useful;
* used to be useful before gdk_colormap_get_visual() existed.
*
* Return value: visual of the default colormap
**/
GdkVisual*
gtk_widget_get_default_visual (void)
{
return gdk_colormap_get_visual (gtk_widget_get_default_colormap ());
}
static void
gtk_widget_emit_direction_changed (GtkWidget *widget,
GtkTextDirection old_dir)
{
PangoContext *context = gtk_widget_peek_pango_context (widget);
if (context)
pango_context_set_base_dir (context,
gtk_widget_get_direction (widget) == GTK_TEXT_DIR_LTR ?
PANGO_DIRECTION_LTR : PANGO_DIRECTION_RTL);
gtk_signal_emit (GTK_OBJECT (widget), widget_signals[DIRECTION_CHANGED], old_dir);
}
/**
* gtk_widget_set_direction:
* @widget: a #GtkWidget
* @dir: the new direction
*
* Set the reading direction on a particular widget. This direction
* controls the primary direction for widgets containing text,
* and also the direction in which the children of a container are
* packed. The ability to set the direction is present in order
* so that correct localization into languages with right-to-left
* reading directions can be done. Generally, applications will
* let the default reading direction present, except for containers
* where the containers are arranged in an order that is explicitely
* visual rather than logical (such as buttons for text justificiation).
*
* If the direction is set to %GTK_TEXT_DIR_NONE, then the value
* set by gtk_widget_set_default_direction() will be used.
**/
void
gtk_widget_set_direction (GtkWidget *widget,
GtkTextDirection dir)
{
GtkTextDirection old_dir;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
g_return_if_fail (dir >= GTK_TEXT_DIR_NONE && dir <= GTK_TEXT_DIR_RTL);
old_dir = gtk_widget_get_direction (widget);
if (dir == GTK_TEXT_DIR_NONE)
GTK_PRIVATE_UNSET_FLAG (widget, GTK_DIRECTION_SET);
else
{
GTK_PRIVATE_SET_FLAG (widget, GTK_DIRECTION_SET);
if (dir == GTK_TEXT_DIR_LTR)
GTK_PRIVATE_SET_FLAG (widget, GTK_DIRECTION_LTR);
else
GTK_PRIVATE_UNSET_FLAG (widget, GTK_DIRECTION_LTR);
}
if (old_dir != gtk_widget_get_direction (widget))
gtk_widget_emit_direction_changed (widget, old_dir);
}
/**
* gtk_widget_get_direction:
* @widget: a #GtkWidget
*
* Get the reading direction for a particular widget. See
* gtk_widget_set_direction().
*
* Return value: the reading direction for the widget.
**/
GtkTextDirection
gtk_widget_get_direction (GtkWidget *widget)
{
g_return_val_if_fail (widget != NULL, GTK_TEXT_DIR_LTR);
g_return_val_if_fail (GTK_IS_WIDGET (widget), GTK_TEXT_DIR_LTR);
if (GTK_WIDGET_DIRECTION_SET (widget))
return GTK_WIDGET_DIRECTION_LTR (widget) ? GTK_TEXT_DIR_LTR : GTK_TEXT_DIR_RTL;
else
return gtk_default_direction;
}
static void
gtk_widget_set_default_direction_recurse (GtkWidget *widget, gpointer data)
{
GtkTextDirection old_dir = GPOINTER_TO_UINT (data);
g_object_ref (G_OBJECT (widget));
if (!GTK_WIDGET_DIRECTION_SET (widget))
gtk_widget_emit_direction_changed (widget, old_dir);
if (GTK_IS_CONTAINER (widget))
gtk_container_forall (GTK_CONTAINER (widget),
gtk_widget_set_default_direction_recurse,
data);
g_object_unref (G_OBJECT (widget));
}
/**
* gtk_widget_set_default_direction:
* @dir: the new default direction. This cannot be
* %GTK_TEXT_DIR_NONE.
*
* Set the default reading direction for widgets where the
* direction has not been explicitly set by gtk_widget_set_direction().
**/
void
gtk_widget_set_default_direction (GtkTextDirection dir)
{
g_return_if_fail (dir == GTK_TEXT_DIR_RTL || dir == GTK_TEXT_DIR_LTR);
if (dir != gtk_default_direction)
{
GList *toplevels, *tmp_list;
GtkTextDirection old_dir = gtk_default_direction;
gtk_default_direction = dir;
tmp_list = toplevels = gtk_window_list_toplevels ();
g_list_foreach (toplevels, (GFunc)g_object_ref, NULL);
while (tmp_list)
{
gtk_widget_set_default_direction_recurse (tmp_list->data,
GUINT_TO_POINTER (old_dir));
g_object_unref (tmp_list->data);
tmp_list = tmp_list->next;
}
g_list_free (toplevels);
}
}
/**
* gtk_widget_get_default_direction:
*
* Return value: the current default direction. See
* gtk_widget_set_direction().
**/
GtkTextDirection
gtk_widget_get_default_direction (void)
{
return gtk_default_direction;
}
static void
gtk_widget_shutdown (GObject *object)
{
GtkWidget *widget = GTK_WIDGET (object);
if (widget->parent)
gtk_container_remove (GTK_CONTAINER (widget->parent), widget);
GTK_WIDGET_UNSET_FLAGS (widget, GTK_VISIBLE);
if (GTK_WIDGET_REALIZED (widget))
gtk_widget_unrealize (widget);
G_OBJECT_CLASS (parent_class)->shutdown (object);
}
static void
gtk_widget_real_destroy (GtkObject *object)
{
GtkWidget *widget;
GtkStyle *saved_style;
/* gtk_object_destroy() will already hold a refcount on object
*/
widget = GTK_WIDGET (object);
gtk_grab_remove (widget);
gtk_selection_remove_all (widget);
saved_style = gtk_object_get_data_by_id (object, quark_saved_default_style);
if (saved_style)
{
gtk_style_unref (saved_style);
gtk_object_remove_data_by_id (object, quark_saved_default_style);
}
gtk_style_unref (widget->style);
widget->style = gtk_widget_peek_style ();
gtk_style_ref (widget->style);
GTK_OBJECT_CLASS (parent_class)->destroy (object);
}
static void
gtk_widget_finalize (GObject *object)
{
GtkWidget *widget = GTK_WIDGET (object);
GtkWidgetAuxInfo *aux_info;
gint *events;
GdkExtensionMode *mode;
GtkStyle *saved_style;
gtk_grab_remove (widget);
gtk_selection_remove_all (widget);
saved_style = gtk_object_get_data_by_id (GTK_OBJECT (widget), quark_saved_default_style);
if (saved_style)
{
gtk_style_unref (saved_style);
gtk_object_remove_data_by_id (GTK_OBJECT (widget), quark_saved_default_style);
}
gtk_style_unref (widget->style);
widget->style = NULL;
if (widget->name)
g_free (widget->name);
aux_info =_gtk_widget_get_aux_info (widget, FALSE);
if (aux_info)
gtk_widget_aux_info_destroy (aux_info);
events = gtk_object_get_data_by_id (GTK_OBJECT (widget), quark_event_mask);
if (events)
g_free (events);
mode = gtk_object_get_data_by_id (GTK_OBJECT (widget), quark_extension_event_mode);
if (mode)
g_free (mode);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
/*****************************************
* gtk_widget_real_map:
*
* arguments:
*
* results:
*****************************************/
static void
gtk_widget_real_map (GtkWidget *widget)
{
g_return_if_fail (GTK_IS_WIDGET (widget));
g_return_if_fail (GTK_WIDGET_REALIZED (widget) == TRUE);
if (!GTK_WIDGET_MAPPED (widget))
{
GTK_WIDGET_SET_FLAGS (widget, GTK_MAPPED);
if (!GTK_WIDGET_NO_WINDOW (widget))
gdk_window_show (widget->window);
}
}
/*****************************************
* gtk_widget_real_unmap:
*
* arguments:
*
* results:
*****************************************/
static void
gtk_widget_real_unmap (GtkWidget *widget)
{
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
if (GTK_WIDGET_MAPPED (widget))
{
GTK_WIDGET_UNSET_FLAGS (widget, GTK_MAPPED);
if (!GTK_WIDGET_NO_WINDOW (widget))
gdk_window_hide (widget->window);
}
}
/*****************************************
* gtk_widget_real_realize:
*
* arguments:
*
* results:
*****************************************/
static void
gtk_widget_real_realize (GtkWidget *widget)
{
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
g_return_if_fail (GTK_WIDGET_NO_WINDOW (widget));
GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
if (widget->parent)
{
widget->window = gtk_widget_get_parent_window (widget);
gdk_window_ref (widget->window);
}
widget->style = gtk_style_attach (widget->style, widget->window);
}
/*****************************************
* gtk_widget_real_unrealize:
*
* arguments:
*
* results:
*****************************************/
static void
gtk_widget_real_unrealize (GtkWidget *widget)
{
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
if (GTK_WIDGET_MAPPED (widget))
gtk_widget_real_unmap (widget);
GTK_WIDGET_UNSET_FLAGS (widget, GTK_MAPPED);
/* printf ("unrealizing %s\n", gtk_type_name (GTK_OBJECT (widget)->klass->type));
*/
/* We must do unrealize child widget BEFORE container widget.
* gdk_window_destroy() destroys specified xwindow and its sub-xwindows.
* So, unrealizing container widget bofore its children causes the problem
* (for example, gdk_ic_destroy () with destroyed window causes crash. )
*/
if (GTK_IS_CONTAINER (widget))
gtk_container_forall (GTK_CONTAINER (widget),
(GtkCallback) gtk_widget_unrealize,
NULL);
gtk_style_detach (widget->style);
if (!GTK_WIDGET_NO_WINDOW (widget))
{
gdk_window_set_user_data (widget->window, NULL);
gdk_window_destroy (widget->window);
widget->window = NULL;
}
else
{
gdk_window_unref (widget->window);
widget->window = NULL;
}
GTK_WIDGET_UNSET_FLAGS (widget, GTK_REALIZED);
}
static void
gtk_widget_real_size_request (GtkWidget *widget,
GtkRequisition *requisition)
{
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
requisition->width = widget->requisition.width;
requisition->height = widget->requisition.height;
}
/*****************************************
* gtk_widget_peek_colormap:
*
* arguments:
*
* results:
*****************************************/
static GdkColormap*
gtk_widget_peek_colormap (void)
{
if (colormap_stack)
return (GdkColormap*) colormap_stack->data;
return gtk_widget_get_default_colormap ();
}
static void
gtk_widget_propagate_state (GtkWidget *widget,
GtkStateData *data)
{
guint8 old_state;
/* don't call this function with state==GTK_STATE_INSENSITIVE,
* parent_sensitive==TRUE on a sensitive widget
*/
old_state = GTK_WIDGET_STATE (widget);
if (data->parent_sensitive)
{
GTK_WIDGET_SET_FLAGS (widget, GTK_PARENT_SENSITIVE);
if (GTK_WIDGET_IS_SENSITIVE (widget))
{
if (data->state_restoration)
GTK_WIDGET_STATE (widget) = GTK_WIDGET_SAVED_STATE (widget);
else
GTK_WIDGET_STATE (widget) = data->state;
}
else
{
GTK_WIDGET_STATE (widget) = GTK_STATE_INSENSITIVE;
if (!data->state_restoration &&
data->state != GTK_STATE_INSENSITIVE)
GTK_WIDGET_SAVED_STATE (widget) = data->state;
}
}
else
{
GTK_WIDGET_UNSET_FLAGS (widget, GTK_PARENT_SENSITIVE);
if (!data->state_restoration)
{
if (data->state != GTK_STATE_INSENSITIVE)
GTK_WIDGET_SAVED_STATE (widget) = data->state;
}
else if (GTK_WIDGET_STATE (widget) != GTK_STATE_INSENSITIVE)
GTK_WIDGET_SAVED_STATE (widget) = GTK_WIDGET_STATE (widget);
GTK_WIDGET_STATE (widget) = GTK_STATE_INSENSITIVE;
}
if (GTK_WIDGET_HAS_FOCUS (widget) && !GTK_WIDGET_IS_SENSITIVE (widget))
{
GtkWidget *window;
window = gtk_widget_get_ancestor (widget, GTK_TYPE_WINDOW);
if (window)
gtk_window_set_focus (GTK_WINDOW (window), NULL);
}
if (old_state != GTK_WIDGET_STATE (widget))
{
gtk_widget_ref (widget);
gtk_signal_emit (GTK_OBJECT (widget), widget_signals[STATE_CHANGED], old_state);
if (GTK_IS_CONTAINER (widget))
{
data->parent_sensitive = (GTK_WIDGET_IS_SENSITIVE (widget) != FALSE);
data->state = GTK_WIDGET_STATE (widget);
if (data->use_forall)
gtk_container_forall (GTK_CONTAINER (widget),
(GtkCallback) gtk_widget_propagate_state,
data);
else
gtk_container_foreach (GTK_CONTAINER (widget),
(GtkCallback) gtk_widget_propagate_state,
data);
}
gtk_widget_unref (widget);
}
}
/**
* _gtk_widget_get_aux_info:
* @widget: a #GtkWidget
* @create: if %TRUE, create the structure if it doesn't exist
*
* Get the #GtkWidgetAuxInfo structure for the widget.
*
* Return value: the #GtkAuxInfo structure for the widget, or
* %NULL if @create is %FALSE and one doesn't already exist.
**/
GtkWidgetAuxInfo *
_gtk_widget_get_aux_info (GtkWidget *widget,
gboolean create)
{
GtkWidgetAuxInfo *aux_info;
aux_info = gtk_object_get_data_by_id (GTK_OBJECT (widget), quark_aux_info);
if (!aux_info && create)
{
aux_info = gtk_widget_aux_info_new ();
gtk_object_set_data_by_id (GTK_OBJECT (widget), quark_aux_info, aux_info);
aux_info->width = aux_info->height = -1;
aux_info->x = aux_info->y = 0;
aux_info->x_set = aux_info->y_set = FALSE;
}
return aux_info;
}
/*****************************************
* gtk_widget_aux_info_new:
*
* arguments:
*
* results:
*****************************************/
static GtkWidgetAuxInfo*
gtk_widget_aux_info_new (void)
{
GtkWidgetAuxInfo *aux_info;
if (!aux_info_mem_chunk)
aux_info_mem_chunk = g_mem_chunk_new ("widget aux info mem chunk",
sizeof (GtkWidgetAuxInfo),
1024, G_ALLOC_AND_FREE);
aux_info = g_chunk_new (GtkWidgetAuxInfo, aux_info_mem_chunk);
aux_info->x = -1;
aux_info->y = -1;
aux_info->width = 0;
aux_info->height = 0;
return aux_info;
}
/*****************************************
* gtk_widget_aux_info_destroy:
*
* arguments:
*
* results:
*****************************************/
static void
gtk_widget_aux_info_destroy (GtkWidgetAuxInfo *aux_info)
{
g_return_if_fail (aux_info != NULL);
g_mem_chunk_free (aux_info_mem_chunk, aux_info);
}
static void
gtk_widget_shape_info_destroy (GtkWidgetShapeInfo *info)
{
gdk_drawable_unref (info->shape_mask);
g_free (info);
}
/*****************************************
* gtk_widget_shape_combine_mask:
* set a shape for this widgets' gdk window, this allows for
* transparent windows etc., see gdk_window_shape_combine_mask
* for more information
*
* arguments:
*
* results:
*****************************************/
void
gtk_widget_shape_combine_mask (GtkWidget *widget,
GdkBitmap *shape_mask,
gint offset_x,
gint offset_y)
{
GtkWidgetShapeInfo* shape_info;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
/* set_shape doesn't work on widgets without gdk window */
g_return_if_fail (!GTK_WIDGET_NO_WINDOW (widget));
if (!shape_mask)
{
GTK_PRIVATE_UNSET_FLAG (widget, GTK_HAS_SHAPE_MASK);
if (widget->window)
gdk_window_shape_combine_mask (widget->window, NULL, 0, 0);
g_object_set_qdata (G_OBJECT (widget), quark_shape_info, NULL);
}
else
{
GTK_PRIVATE_SET_FLAG (widget, GTK_HAS_SHAPE_MASK);
shape_info = g_new (GtkWidgetShapeInfo, 1);
g_object_set_qdata_full (G_OBJECT (widget), quark_shape_info, shape_info,
(GDestroyNotify) gtk_widget_shape_info_destroy);
shape_info->shape_mask = gdk_drawable_ref (shape_mask);
shape_info->offset_x = offset_x;
shape_info->offset_y = offset_y;
/* set shape if widget has a gdk window allready.
* otherwise the shape is scheduled to be set by gtk_widget_realize.
*/
if (widget->window)
gdk_window_shape_combine_mask (widget->window, shape_mask,
offset_x, offset_y);
}
}
static void
gtk_reset_shapes_recurse (GtkWidget *widget,
GdkWindow *window)
{
gpointer data;
GList *list;
gdk_window_get_user_data (window, &data);
if (data != widget)
return;
gdk_window_shape_combine_mask (window, NULL, 0, 0);
for (list = gdk_window_peek_children (window); list; list = list->next)
gtk_reset_shapes_recurse (widget, list->data);
}
void
gtk_widget_reset_shapes (GtkWidget *widget)
{
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
g_return_if_fail (GTK_WIDGET_REALIZED (widget));
if (!GTK_WIDGET_HAS_SHAPE_MASK (widget))
gtk_reset_shapes_recurse (widget, widget->window);
}
/**
* gtk_widget_ref:
* @widget: a #GtkWidget
*
* Adds a reference to a widget. This function is exactly the same
* as calling g_object_ref(), and exists mostly for historical
* reasons. It can still be convenient to avoid casting a widget
* to a #GObject, it saves a small amount of typing.
*
* Return value: the widget that was referenced
**/
GtkWidget*
gtk_widget_ref (GtkWidget *widget)
{
g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
return (GtkWidget*) g_object_ref ((GObject*) widget);
}
/**
* gtk_widget_unref:
* @widget: a #GtkWidget
*
* Inverse of gtk_widget_ref(). Equivalent to g_object_unref().
*
**/
void
gtk_widget_unref (GtkWidget *widget)
{
g_return_if_fail (GTK_IS_WIDGET (widget));
g_object_unref ((GObject*) widget);
}
/* style properties
*/
void
gtk_widget_class_install_style_property_parser (GtkWidgetClass *class,
GParamSpec *pspec,
GtkRcPropertyParser parser)
{
g_return_if_fail (GTK_IS_WIDGET_CLASS (class));
g_return_if_fail (G_IS_PARAM_SPEC (pspec));
g_return_if_fail (pspec->flags & G_PARAM_READABLE);
g_return_if_fail (!(pspec->flags & (G_PARAM_CONSTRUCT_ONLY | G_PARAM_CONSTRUCT)));
if (g_param_spec_pool_lookup (style_property_spec_pool, pspec->name, G_OBJECT_CLASS_TYPE (class), FALSE))
{
g_warning (G_STRLOC ": class `%s' already contains a style property named `%s'",
G_OBJECT_CLASS_NAME (class),
pspec->name);
return;
}
g_param_spec_ref (pspec);
g_param_spec_sink (pspec);
g_param_spec_set_qdata (pspec, quark_property_parser, parser);
g_param_spec_pool_insert (style_property_spec_pool, pspec, G_OBJECT_CLASS_TYPE (class));
}
void
gtk_widget_class_install_style_property (GtkWidgetClass *class,
GParamSpec *pspec)
{
gtk_widget_class_install_style_property_parser (class, pspec, NULL);
}
void
gtk_widget_style_get_property (GtkWidget *widget,
const gchar *property_name,
GValue *value)
{
GParamSpec *pspec;
g_return_if_fail (GTK_IS_WIDGET (widget));
g_return_if_fail (property_name != NULL);
g_return_if_fail (G_IS_VALUE (value));
g_object_ref (widget);
pspec = g_param_spec_pool_lookup (style_property_spec_pool,
property_name,
G_OBJECT_TYPE (widget),
TRUE);
if (!pspec)
g_warning ("%s: widget class `%s' has no property named `%s'",
G_STRLOC,
G_OBJECT_TYPE_NAME (widget),
property_name);
else
{
const GValue *peek_value;
peek_value = _gtk_style_peek_property_value (widget->style,
G_OBJECT_TYPE (widget),
pspec,
g_param_spec_get_qdata (pspec, quark_property_parser));
/* auto-conversion of the caller's value type
*/
if (G_VALUE_TYPE (value) == G_PARAM_SPEC_VALUE_TYPE (pspec))
g_value_copy (peek_value, value);
else if (g_value_type_transformable (G_PARAM_SPEC_VALUE_TYPE (pspec), G_VALUE_TYPE (value)))
g_value_transform (peek_value, value);
else
g_warning ("can't retrive style property `%s' of type `%s' as value of type `%s'",
pspec->name,
g_type_name (G_PARAM_SPEC_VALUE_TYPE (pspec)),
G_VALUE_TYPE_NAME (value));
}
g_object_unref (widget);
}
void
gtk_widget_style_get_valist (GtkWidget *widget,
const gchar *first_property_name,
va_list var_args)
{
const gchar *name;
g_return_if_fail (GTK_IS_WIDGET (widget));
g_object_ref (widget);
name = first_property_name;
while (name)
{
const GValue *peek_value;
GParamSpec *pspec;
gchar *error;
pspec = g_param_spec_pool_lookup (style_property_spec_pool,
name,
G_OBJECT_TYPE (widget),
TRUE);
if (!pspec)
{
g_warning ("%s: widget class `%s' has no property named `%s'",
G_STRLOC,
G_OBJECT_TYPE_NAME (widget),
name);
break;
}
/* style pspecs are always readable so we can spare that check here */
peek_value = _gtk_style_peek_property_value (widget->style,
G_OBJECT_TYPE (widget),
pspec,
g_param_spec_get_qdata (pspec, quark_property_parser));
G_VALUE_LCOPY (peek_value, var_args, G_VALUE_NOCOPY_CONTENTS, &error);
if (error)
{
g_warning ("%s: %s", G_STRLOC, error);
g_free (error);
break;
}
name = va_arg (var_args, gchar*);
}
g_object_unref (widget);
}
void
gtk_widget_style_get (GtkWidget *widget,
const gchar *first_property_name,
...)
{
va_list var_args;
g_return_if_fail (GTK_IS_WIDGET (widget));
va_start (var_args, first_property_name);
gtk_widget_style_get_valist (widget, first_property_name, var_args);
va_end (var_args);
}
/**
* gtk_widget_path:
* @widget: a #GtkWidget
* @path_length: location to store length of the path
* @path: location to store allocated path string
* @path_reversed: location to store allocated reverse path string
*
* Obtains the full path to @widget. The path is simply the name of a
* widget and all its parents in the container hierarchy, separated by
* periods. The name of a widget comes from
* gtk_widget_get_name(). Paths are used to apply styles to a widget
* in gtkrc configuration files. Widget names are the type of the
* widget by default (e.g. "GtkButton") or can be set to an
* application-specific value with gtk_widget_set_name(). By setting
* the name of a widget, you allow users or theme authors to apply
* styles to that specific widget in their gtkrc
* file. @path_reversed_p fills in the path in reverse order,
* i.e. starting with @widget's name instead of starting with the name
* of @widget's outermost ancestor.
*
**/
void
gtk_widget_path (GtkWidget *widget,
guint *path_length_p,
gchar **path_p,
gchar **path_reversed_p)
{
static gchar *rev_path = NULL;
static guint path_len = 0;
guint len;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
len = 0;
do
{
const gchar *string;
const gchar *s;
gchar *d;
guint l;
string = gtk_widget_get_name (widget);
l = strlen (string);
while (path_len <= len + l + 1)
{
path_len += INIT_PATH_SIZE;
rev_path = g_realloc (rev_path, path_len);
}
s = string + l - 1;
d = rev_path + len;
while (s >= string)
*(d++) = *(s--);
len += l;
widget = widget->parent;
if (widget)
rev_path[len++] = '.';
else
rev_path[len++] = 0;
}
while (widget);
if (path_length_p)
*path_length_p = len - 1;
if (path_reversed_p)
*path_reversed_p = g_strdup (rev_path);
if (path_p)
{
*path_p = g_strdup (rev_path);
g_strreverse (*path_p);
}
}
/**
* gtk_widget_class_path:
* @widget: a #GtkWidget
* @path_length: location to store the length of the class path
* @path: location to store the class path as an allocated string
* @path_reversed: location to store the reverse class path as an allocated string
*
* Same as gtk_widget_path(), but always uses the name of a widget's type,
* never uses a custom name set with gtk_widget_set_name().
*
**/
void
gtk_widget_class_path (GtkWidget *widget,
guint *path_length_p,
gchar **path_p,
gchar **path_reversed_p)
{
static gchar *rev_path = NULL;
static guint path_len = 0;
guint len;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
len = 0;
do
{
const gchar *string;
const gchar *s;
gchar *d;
guint l;
string = gtk_type_name (GTK_WIDGET_TYPE (widget));
l = strlen (string);
while (path_len <= len + l + 1)
{
path_len += INIT_PATH_SIZE;
rev_path = g_realloc (rev_path, path_len);
}
s = string + l - 1;
d = rev_path + len;
while (s >= string)
*(d++) = *(s--);
len += l;
widget = widget->parent;
if (widget)
rev_path[len++] = '.';
else
rev_path[len++] = 0;
}
while (widget);
if (path_length_p)
*path_length_p = len - 1;
if (path_reversed_p)
*path_reversed_p = g_strdup (rev_path);
if (path_p)
{
*path_p = g_strdup (rev_path);
g_strreverse (*path_p);
}
}
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