/* 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 #include #include #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 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; 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: gtk_widget_set_uposition (widget, GTK_VALUE_INT (*arg), -2); break; case ARG_Y: gtk_widget_set_uposition (widget, -2, GTK_VALUE_INT (*arg)); 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_object_get_data_by_id (GTK_OBJECT (widget), quark_aux_info); if (!aux_info) GTK_VALUE_INT (*arg) = -1; else GTK_VALUE_INT (*arg) = aux_info->x; break; case ARG_Y: aux_info = gtk_object_get_data_by_id (GTK_OBJECT (widget), quark_aux_info); if (!aux_info) GTK_VALUE_INT (*arg) = -1; else GTK_VALUE_INT (*arg) = aux_info->y; break; case ARG_WIDTH: aux_info = gtk_object_get_data_by_id (GTK_OBJECT (widget), quark_aux_info); if (!aux_info) GTK_VALUE_INT (*arg) = -1; else GTK_VALUE_INT (*arg) = aux_info->width; break; case ARG_HEIGHT: aux_info = gtk_object_get_data_by_id (GTK_OBJECT (widget), quark_aux_info); 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_object_get_data_by_id (GTK_OBJECT (widget), quark_aux_info); 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_object_get_data_by_id (GTK_OBJECT (widget), quark_aux_info); 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; } /** * gtk_widget_set_uposition: * @widget: a #GtkWidget * @x: x position * @y: y position * * * 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. **/ 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_object_get_data_by_id (GTK_OBJECT (widget), quark_aux_info); if (!aux_info) { aux_info = gtk_widget_aux_info_new (); gtk_object_set_data_by_id (GTK_OBJECT (widget), quark_aux_info, aux_info); } /* keep this in sync with gtk_window_compute_reposition() */ if (x > -2) aux_info->x = x; if (y > -2) aux_info->y = y; if (GTK_IS_WINDOW (widget) && (aux_info->x != -1) && (aux_info->y != -1)) gtk_window_reposition (GTK_WINDOW (widget), x, y); if (GTK_WIDGET_VISIBLE (widget) && widget->parent) gtk_widget_size_allocate (widget, &widget->allocation); } /** * 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_object_get_data_by_id (GTK_OBJECT (widget), quark_aux_info); if (!aux_info) { aux_info = gtk_widget_aux_info_new (); gtk_object_set_data_by_id (GTK_OBJECT (widget), quark_aux_info, aux_info); } 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_object_get_data_by_id (GTK_OBJECT (widget), quark_aux_info); 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_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); } }