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gtk2/gtk/gtkwidget.h
Owen W. Taylor 7bb07317f3 GtkTickCallback: document use of G_SOURCE_CONTINUE/REMOVE for return value 
Document that G_SOURCE_CONTINUE and G_SOURCE_REMOVE are the preferred
return values from a tick callback.
2013-02-14 17:19:53 -05:00

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/* GTK - The GIMP Toolkit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
/*
* 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/.
*/
#ifndef __GTK_WIDGET_H__
#define __GTK_WIDGET_H__
#if !defined (__GTK_H_INSIDE__) && !defined (GTK_COMPILATION)
#error "Only <gtk/gtk.h> can be included directly."
#endif
#include <gdk/gdk.h>
#include <gtk/gtkaccelgroup.h>
#include <gtk/gtkborder.h>
#include <gtk/gtktypes.h>
#include <atk/atk.h>
G_BEGIN_DECLS
/* Kinds of widget-specific help */
typedef enum
{
GTK_WIDGET_HELP_TOOLTIP,
GTK_WIDGET_HELP_WHATS_THIS
} GtkWidgetHelpType;
/* Macro for casting a pointer to a GtkWidget or GtkWidgetClass pointer.
* Macros for testing whether `widget' or `klass' are of type GTK_TYPE_WIDGET.
*/
#define GTK_TYPE_WIDGET (gtk_widget_get_type ())
#define GTK_WIDGET(widget) (G_TYPE_CHECK_INSTANCE_CAST ((widget), GTK_TYPE_WIDGET, GtkWidget))
#define GTK_WIDGET_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_WIDGET, GtkWidgetClass))
#define GTK_IS_WIDGET(widget) (G_TYPE_CHECK_INSTANCE_TYPE ((widget), GTK_TYPE_WIDGET))
#define GTK_IS_WIDGET_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_WIDGET))
#define GTK_WIDGET_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_WIDGET, GtkWidgetClass))
#define GTK_TYPE_REQUISITION (gtk_requisition_get_type ())
typedef struct _GtkWidgetPrivate GtkWidgetPrivate;
typedef struct _GtkWidgetClass GtkWidgetClass;
typedef struct _GtkWidgetClassPrivate GtkWidgetClassPrivate;
typedef struct _GtkWidgetAuxInfo GtkWidgetAuxInfo;
/**
* GtkAllocation:
* @x: the X position of the widget's area relative to its parents allocation.
* @y: the Y position of the widget's area relative to its parents allocation.
* @width: the width of the widget's allocated area.
* @height: the height of the widget's allocated area.
*
* A <structname>GtkAllocation</structname> of a widget represents region
* which has been allocated to the widget by its parent. It is a subregion
* of its parents allocation. See <xref linkend="geometry-management"/> for
* more information.
*/
typedef GdkRectangle GtkAllocation;
/**
* GtkCallback:
* @widget: the widget to operate on
* @data: (closure): user-supplied data
*
* The type of the callback functions used for e.g. iterating over
* the children of a container, see gtk_container_foreach().
*/
typedef void (*GtkCallback) (GtkWidget *widget,
gpointer data);
/**
* GtkTickCallback:
* @widget: the widget
* @frame_clock: the frame clock for the widget (same as calling gtk_widget_get_frame_clock())
* @user_data: user data passed to gtk_widget_add_tick_callback().
*
* Callback type for adding a function to update animations. See gtk_widget_add_tick_callback().
*
* Returns: %G_SOURCE_CONTINUE if the tick callback should continue to be called,
* %G_SOURCE_REMOVE if the tick callback should be removed.
*/
typedef gboolean (*GtkTickCallback) (GtkWidget *widget,
GdkFrameClock *frame_clock,
gpointer user_data);
/**
* GtkRequisition:
* @width: the widget's desired width
* @height: the widget's desired height
*
* A <structname>GtkRequisition</structname> represents the desired size of a widget. See
* <xref linkend="geometry-management"/> for more information.
*/
struct _GtkRequisition
{
gint width;
gint height;
};
/* The widget is the base of the tree for displayable objects.
* (A displayable object is one which takes up some amount
* of screen real estate). It provides a common base and interface
* which actual widgets must adhere to.
*/
struct _GtkWidget
{
GInitiallyUnowned parent_instance;
GtkWidgetPrivate *priv;
};
/**
* GtkWidgetClass:
* @parent_class: The object class structure needs to be the first
* element in the widget class structure in order for the class mechanism
* to work correctly. This allows a GtkWidgetClass pointer to be cast to
* a GObjectClass pointer.
* @activate_signal: The signal to emit when a widget of this class is
* activated, gtk_widget_activate() handles the emission.
* Implementation of this signal is optional.
* @get_request_mode: This allows a widget to tell its parent container whether
* it prefers to be allocated in %GTK_SIZE_REQUEST_HEIGHT_FOR_WIDTH or
* %GTK_SIZE_REQUEST_WIDTH_FOR_HEIGHT mode.
* %GTK_SIZE_REQUEST_HEIGHT_FOR_WIDTH means the widget prefers to have
* #GtkWidgetClass.get_preferred_width() called and then
* #GtkWidgetClass.get_preferred_height_for_width().
* %GTK_SIZE_REQUEST_CONSTANT_SIZE disables any height-for-width or
* width-for-height geometry management for a said widget and is the
* default return.
* It's important to note (as described below) that any widget
* which trades height-for-width or width-for-height must respond properly
* to both of the virtual methods #GtkWidgetClass.get_preferred_height_for_width()
* and #GtkWidgetClass.get_preferred_width_for_height() since it might be
* queried in either #GtkSizeRequestMode by its parent container.
* @get_preferred_height: This is called by containers to obtain the minimum
* and natural height of a widget. A widget that does not actually trade
* any height for width or width for height only has to implement these
* two virtual methods (#GtkWidgetClass.get_preferred_width() and
* #GtkWidgetClass.get_preferred_height()).
* @get_preferred_width_for_height: This is analogous to
* #GtkWidgetClass.get_preferred_height_for_width() except that it
* operates in the oposite orientation. It's rare that a widget actually
* does %GTK_SIZE_REQUEST_WIDTH_FOR_HEIGHT requests but this can happen
* when, for example, a widget or container gets additional columns to
* compensate for a smaller allocated height.
* @get_preferred_width: This is called by containers to obtain the minimum
* and natural width of a widget. A widget will never be allocated a width
* less than its minimum and will only ever be allocated a width greater
* than the natural width once all of the said widget's siblings have
* received their natural widths.
* Furthermore, a widget will only ever be allocated a width greater than
* its natural width if it was configured to receive extra expand space
* from its parent container.
* @get_preferred_height_for_width: This is similar to
* #GtkWidgetClass.get_preferred_height() except that it is passed a
* contextual width to request height for. By implementing this virtual
* method it is possible for a #GtkLabel to tell its parent how much height
* would be required if the label were to be allocated a said width.
* @adjust_size_request: Convert an initial size request from a widget's
* #GtkSizeRequestMode virtual method implementations into a size request to
* be used by parent containers in laying out the widget.
* adjust_size_request adjusts <emphasis>from</emphasis> a child widget's
* original request <emphasis>to</emphasis> what a parent container should
* use for layout. The @for_size argument will be -1 if the request should
* not be for a particular size in the opposing orientation, i.e. if the
* request is not height-for-width or width-for-height. If @for_size is
* greater than -1, it is the proposed allocation in the opposing
* orientation that we need the request for. Implementations of
* adjust_size_request should chain up to the default implementation,
* which applies #GtkWidget's margin properties and imposes any values
* from gtk_widget_set_size_request(). Chaining up should be last,
* <emphasis>after</emphasis> your subclass adjusts the request, so
* #GtkWidget can apply constraints and add the margin properly.
* @adjust_size_allocation: Convert an initial size allocation assigned
* by a #GtkContainer using gtk_widget_size_allocate(), into an actual
* size allocation to be used by the widget. adjust_size_allocation
* adjusts <emphasis>to</emphasis> a child widget's actual allocation
* <emphasis>from</emphasis> what a parent container computed for the
* child. The adjusted allocation must be entirely within the original
* allocation. In any custom implementation, chain up to the default
* #GtkWidget implementation of this method, which applies the margin
* and alignment properties of #GtkWidget. Chain up
* <emphasis>before</emphasis> performing your own adjustments so your
* own adjustments remove more allocation after the #GtkWidget base
* class has already removed margin and alignment. The natural size
* passed in should be adjusted in the same way as the allocated size,
* which allows adjustments to perform alignments or other changes
* based on natural size.
*/
struct _GtkWidgetClass
{
GInitiallyUnownedClass parent_class;
/*< public >*/
guint activate_signal;
/* seldomly overidden */
void (*dispatch_child_properties_changed) (GtkWidget *widget,
guint n_pspecs,
GParamSpec **pspecs);
/* basics */
void (* destroy) (GtkWidget *widget);
void (* show) (GtkWidget *widget);
void (* show_all) (GtkWidget *widget);
void (* hide) (GtkWidget *widget);
void (* map) (GtkWidget *widget);
void (* unmap) (GtkWidget *widget);
void (* realize) (GtkWidget *widget);
void (* unrealize) (GtkWidget *widget);
void (* size_allocate) (GtkWidget *widget,
GtkAllocation *allocation);
void (* state_changed) (GtkWidget *widget,
GtkStateType previous_state);
void (* state_flags_changed) (GtkWidget *widget,
GtkStateFlags previous_state_flags);
void (* parent_set) (GtkWidget *widget,
GtkWidget *previous_parent);
void (* hierarchy_changed) (GtkWidget *widget,
GtkWidget *previous_toplevel);
void (* style_set) (GtkWidget *widget,
GtkStyle *previous_style);
void (* direction_changed) (GtkWidget *widget,
GtkTextDirection previous_direction);
void (* grab_notify) (GtkWidget *widget,
gboolean was_grabbed);
void (* child_notify) (GtkWidget *widget,
GParamSpec *child_property);
gboolean (* draw) (GtkWidget *widget,
cairo_t *cr);
/* size requests */
GtkSizeRequestMode (* get_request_mode) (GtkWidget *widget);
void (* get_preferred_height) (GtkWidget *widget,
gint *minimum_height,
gint *natural_height);
void (* get_preferred_width_for_height) (GtkWidget *widget,
gint height,
gint *minimum_width,
gint *natural_width);
void (* get_preferred_width) (GtkWidget *widget,
gint *minimum_width,
gint *natural_width);
void (* get_preferred_height_for_width) (GtkWidget *widget,
gint width,
gint *minimum_height,
gint *natural_height);
/* Mnemonics */
gboolean (* mnemonic_activate) (GtkWidget *widget,
gboolean group_cycling);
/* explicit focus */
void (* grab_focus) (GtkWidget *widget);
gboolean (* focus) (GtkWidget *widget,
GtkDirectionType direction);
/* keyboard navigation */
void (* move_focus) (GtkWidget *widget,
GtkDirectionType direction);
gboolean (* keynav_failed) (GtkWidget *widget,
GtkDirectionType direction);
/* events */
gboolean (* event) (GtkWidget *widget,
GdkEvent *event);
gboolean (* button_press_event) (GtkWidget *widget,
GdkEventButton *event);
gboolean (* button_release_event) (GtkWidget *widget,
GdkEventButton *event);
gboolean (* scroll_event) (GtkWidget *widget,
GdkEventScroll *event);
gboolean (* motion_notify_event) (GtkWidget *widget,
GdkEventMotion *event);
gboolean (* delete_event) (GtkWidget *widget,
GdkEventAny *event);
gboolean (* destroy_event) (GtkWidget *widget,
GdkEventAny *event);
gboolean (* key_press_event) (GtkWidget *widget,
GdkEventKey *event);
gboolean (* key_release_event) (GtkWidget *widget,
GdkEventKey *event);
gboolean (* enter_notify_event) (GtkWidget *widget,
GdkEventCrossing *event);
gboolean (* leave_notify_event) (GtkWidget *widget,
GdkEventCrossing *event);
gboolean (* configure_event) (GtkWidget *widget,
GdkEventConfigure *event);
gboolean (* focus_in_event) (GtkWidget *widget,
GdkEventFocus *event);
gboolean (* focus_out_event) (GtkWidget *widget,
GdkEventFocus *event);
gboolean (* map_event) (GtkWidget *widget,
GdkEventAny *event);
gboolean (* unmap_event) (GtkWidget *widget,
GdkEventAny *event);
gboolean (* property_notify_event) (GtkWidget *widget,
GdkEventProperty *event);
gboolean (* selection_clear_event) (GtkWidget *widget,
GdkEventSelection *event);
gboolean (* selection_request_event) (GtkWidget *widget,
GdkEventSelection *event);
gboolean (* selection_notify_event) (GtkWidget *widget,
GdkEventSelection *event);
gboolean (* proximity_in_event) (GtkWidget *widget,
GdkEventProximity *event);
gboolean (* proximity_out_event) (GtkWidget *widget,
GdkEventProximity *event);
gboolean (* visibility_notify_event) (GtkWidget *widget,
GdkEventVisibility *event);
gboolean (* window_state_event) (GtkWidget *widget,
GdkEventWindowState *event);
gboolean (* damage_event) (GtkWidget *widget,
GdkEventExpose *event);
gboolean (* grab_broken_event) (GtkWidget *widget,
GdkEventGrabBroken *event);
/* selection */
void (* selection_get) (GtkWidget *widget,
GtkSelectionData *selection_data,
guint info,
guint time_);
void (* selection_received) (GtkWidget *widget,
GtkSelectionData *selection_data,
guint time_);
/* Source side drag signals */
void (* drag_begin) (GtkWidget *widget,
GdkDragContext *context);
void (* drag_end) (GtkWidget *widget,
GdkDragContext *context);
void (* drag_data_get) (GtkWidget *widget,
GdkDragContext *context,
GtkSelectionData *selection_data,
guint info,
guint time_);
void (* drag_data_delete) (GtkWidget *widget,
GdkDragContext *context);
/* Target side drag signals */
void (* drag_leave) (GtkWidget *widget,
GdkDragContext *context,
guint time_);
gboolean (* drag_motion) (GtkWidget *widget,
GdkDragContext *context,
gint x,
gint y,
guint time_);
gboolean (* drag_drop) (GtkWidget *widget,
GdkDragContext *context,
gint x,
gint y,
guint time_);
void (* drag_data_received) (GtkWidget *widget,
GdkDragContext *context,
gint x,
gint y,
GtkSelectionData *selection_data,
guint info,
guint time_);
gboolean (* drag_failed) (GtkWidget *widget,
GdkDragContext *context,
GtkDragResult result);
/* Signals used only for keybindings */
gboolean (* popup_menu) (GtkWidget *widget);
/* If a widget has multiple tooltips/whatsthis, it should show the
* one for the current focus location, or if that doesn't make
* sense, should cycle through them showing each tip alongside
* whatever piece of the widget it applies to.
*/
gboolean (* show_help) (GtkWidget *widget,
GtkWidgetHelpType help_type);
/* accessibility support
*/
AtkObject * (* get_accessible) (GtkWidget *widget);
void (* screen_changed) (GtkWidget *widget,
GdkScreen *previous_screen);
gboolean (* can_activate_accel) (GtkWidget *widget,
guint signal_id);
void (* composited_changed) (GtkWidget *widget);
gboolean (* query_tooltip) (GtkWidget *widget,
gint x,
gint y,
gboolean keyboard_tooltip,
GtkTooltip *tooltip);
void (* compute_expand) (GtkWidget *widget,
gboolean *hexpand_p,
gboolean *vexpand_p);
void (* adjust_size_request) (GtkWidget *widget,
GtkOrientation orientation,
gint *minimum_size,
gint *natural_size);
void (* adjust_size_allocation) (GtkWidget *widget,
GtkOrientation orientation,
gint *minimum_size,
gint *natural_size,
gint *allocated_pos,
gint *allocated_size);
void (* style_updated) (GtkWidget *widget);
gboolean (* touch_event) (GtkWidget *widget,
GdkEventTouch *event);
/*< private >*/
GtkWidgetClassPrivate *priv;
/* Padding for future expansion */
void (*_gtk_reserved2) (void);
void (*_gtk_reserved3) (void);
void (*_gtk_reserved4) (void);
void (*_gtk_reserved5) (void);
void (*_gtk_reserved6) (void);
void (*_gtk_reserved7) (void);
};
struct _GtkWidgetAuxInfo
{
gint width;
gint height;
guint halign : 4;
guint valign : 4;
GtkBorder margin;
};
GType gtk_widget_get_type (void) G_GNUC_CONST;
GtkWidget* gtk_widget_new (GType type,
const gchar *first_property_name,
...);
void gtk_widget_destroy (GtkWidget *widget);
void gtk_widget_destroyed (GtkWidget *widget,
GtkWidget **widget_pointer);
void gtk_widget_unparent (GtkWidget *widget);
void gtk_widget_show (GtkWidget *widget);
void gtk_widget_hide (GtkWidget *widget);
void gtk_widget_show_now (GtkWidget *widget);
void gtk_widget_show_all (GtkWidget *widget);
void gtk_widget_set_no_show_all (GtkWidget *widget,
gboolean no_show_all);
gboolean gtk_widget_get_no_show_all (GtkWidget *widget);
void gtk_widget_map (GtkWidget *widget);
void gtk_widget_unmap (GtkWidget *widget);
void gtk_widget_realize (GtkWidget *widget);
void gtk_widget_unrealize (GtkWidget *widget);
void gtk_widget_draw (GtkWidget *widget,
cairo_t *cr);
/* Queuing draws */
void gtk_widget_queue_draw (GtkWidget *widget);
void gtk_widget_queue_draw_area (GtkWidget *widget,
gint x,
gint y,
gint width,
gint height);
void gtk_widget_queue_draw_region (GtkWidget *widget,
const cairo_region_t*region);
void gtk_widget_queue_resize (GtkWidget *widget);
void gtk_widget_queue_resize_no_redraw (GtkWidget *widget);
GdkFrameClock* gtk_widget_get_frame_clock (GtkWidget *widget);
GDK_DEPRECATED_IN_3_0_FOR(gtk_widget_get_preferred_size)
void gtk_widget_size_request (GtkWidget *widget,
GtkRequisition *requisition);
void gtk_widget_size_allocate (GtkWidget *widget,
GtkAllocation *allocation);
GtkSizeRequestMode gtk_widget_get_request_mode (GtkWidget *widget);
void gtk_widget_get_preferred_width (GtkWidget *widget,
gint *minimum_width,
gint *natural_width);
void gtk_widget_get_preferred_height_for_width (GtkWidget *widget,
gint width,
gint *minimum_height,
gint *natural_height);
void gtk_widget_get_preferred_height (GtkWidget *widget,
gint *minimum_height,
gint *natural_height);
void gtk_widget_get_preferred_width_for_height (GtkWidget *widget,
gint height,
gint *minimum_width,
gint *natural_width);
void gtk_widget_get_preferred_size (GtkWidget *widget,
GtkRequisition *minimum_size,
GtkRequisition *natural_size);
GDK_DEPRECATED_IN_3_0_FOR(gtk_widget_get_preferred_size)
void gtk_widget_get_child_requisition (GtkWidget *widget,
GtkRequisition *requisition);
void gtk_widget_add_accelerator (GtkWidget *widget,
const gchar *accel_signal,
GtkAccelGroup *accel_group,
guint accel_key,
GdkModifierType accel_mods,
GtkAccelFlags accel_flags);
gboolean gtk_widget_remove_accelerator (GtkWidget *widget,
GtkAccelGroup *accel_group,
guint accel_key,
GdkModifierType accel_mods);
void gtk_widget_set_accel_path (GtkWidget *widget,
const gchar *accel_path,
GtkAccelGroup *accel_group);
GList* gtk_widget_list_accel_closures (GtkWidget *widget);
gboolean gtk_widget_can_activate_accel (GtkWidget *widget,
guint signal_id);
gboolean gtk_widget_mnemonic_activate (GtkWidget *widget,
gboolean group_cycling);
gboolean gtk_widget_event (GtkWidget *widget,
GdkEvent *event);
gint gtk_widget_send_expose (GtkWidget *widget,
GdkEvent *event);
gboolean gtk_widget_send_focus_change (GtkWidget *widget,
GdkEvent *event);
gboolean gtk_widget_activate (GtkWidget *widget);
void gtk_widget_reparent (GtkWidget *widget,
GtkWidget *new_parent);
gboolean gtk_widget_intersect (GtkWidget *widget,
const GdkRectangle *area,
GdkRectangle *intersection);
cairo_region_t *gtk_widget_region_intersect (GtkWidget *widget,
const cairo_region_t *region);
void gtk_widget_freeze_child_notify (GtkWidget *widget);
void gtk_widget_child_notify (GtkWidget *widget,
const gchar *child_property);
void gtk_widget_thaw_child_notify (GtkWidget *widget);
void gtk_widget_set_can_focus (GtkWidget *widget,
gboolean can_focus);
gboolean gtk_widget_get_can_focus (GtkWidget *widget);
gboolean gtk_widget_has_focus (GtkWidget *widget);
gboolean gtk_widget_is_focus (GtkWidget *widget);
GDK_AVAILABLE_IN_3_2
gboolean gtk_widget_has_visible_focus (GtkWidget *widget);
void gtk_widget_grab_focus (GtkWidget *widget);
void gtk_widget_set_can_default (GtkWidget *widget,
gboolean can_default);
gboolean gtk_widget_get_can_default (GtkWidget *widget);
gboolean gtk_widget_has_default (GtkWidget *widget);
void gtk_widget_grab_default (GtkWidget *widget);
void gtk_widget_set_receives_default (GtkWidget *widget,
gboolean receives_default);
gboolean gtk_widget_get_receives_default (GtkWidget *widget);
gboolean gtk_widget_has_grab (GtkWidget *widget);
gboolean gtk_widget_device_is_shadowed (GtkWidget *widget,
GdkDevice *device);
void gtk_widget_set_name (GtkWidget *widget,
const gchar *name);
const gchar * gtk_widget_get_name (GtkWidget *widget);
void gtk_widget_set_state (GtkWidget *widget,
GtkStateType state);
GtkStateType gtk_widget_get_state (GtkWidget *widget);
void gtk_widget_set_state_flags (GtkWidget *widget,
GtkStateFlags flags,
gboolean clear);
void gtk_widget_unset_state_flags (GtkWidget *widget,
GtkStateFlags flags);
GtkStateFlags gtk_widget_get_state_flags (GtkWidget *widget);
void gtk_widget_set_sensitive (GtkWidget *widget,
gboolean sensitive);
gboolean gtk_widget_get_sensitive (GtkWidget *widget);
gboolean gtk_widget_is_sensitive (GtkWidget *widget);
void gtk_widget_set_visible (GtkWidget *widget,
gboolean visible);
gboolean gtk_widget_get_visible (GtkWidget *widget);
gboolean gtk_widget_is_visible (GtkWidget *widget);
void gtk_widget_set_has_window (GtkWidget *widget,
gboolean has_window);
gboolean gtk_widget_get_has_window (GtkWidget *widget);
gboolean gtk_widget_is_toplevel (GtkWidget *widget);
gboolean gtk_widget_is_drawable (GtkWidget *widget);
void gtk_widget_set_realized (GtkWidget *widget,
gboolean realized);
gboolean gtk_widget_get_realized (GtkWidget *widget);
void gtk_widget_set_mapped (GtkWidget *widget,
gboolean mapped);
gboolean gtk_widget_get_mapped (GtkWidget *widget);
void gtk_widget_set_app_paintable (GtkWidget *widget,
gboolean app_paintable);
gboolean gtk_widget_get_app_paintable (GtkWidget *widget);
void gtk_widget_set_double_buffered (GtkWidget *widget,
gboolean double_buffered);
gboolean gtk_widget_get_double_buffered (GtkWidget *widget);
void gtk_widget_set_redraw_on_allocate (GtkWidget *widget,
gboolean redraw_on_allocate);
void gtk_widget_set_parent (GtkWidget *widget,
GtkWidget *parent);
GtkWidget * gtk_widget_get_parent (GtkWidget *widget);
void gtk_widget_set_parent_window (GtkWidget *widget,
GdkWindow *parent_window);
GdkWindow * gtk_widget_get_parent_window (GtkWidget *widget);
void gtk_widget_set_child_visible (GtkWidget *widget,
gboolean is_visible);
gboolean gtk_widget_get_child_visible (GtkWidget *widget);
void gtk_widget_set_window (GtkWidget *widget,
GdkWindow *window);
GdkWindow * gtk_widget_get_window (GtkWidget *widget);
GDK_AVAILABLE_IN_3_8
void gtk_widget_register_window (GtkWidget *widget,
GdkWindow *window);
GDK_AVAILABLE_IN_3_8
void gtk_widget_unregister_window (GtkWidget *widget,
GdkWindow *window);
int gtk_widget_get_allocated_width (GtkWidget *widget);
int gtk_widget_get_allocated_height (GtkWidget *widget);
void gtk_widget_get_allocation (GtkWidget *widget,
GtkAllocation *allocation);
void gtk_widget_set_allocation (GtkWidget *widget,
const GtkAllocation *allocation);
void gtk_widget_get_requisition (GtkWidget *widget,
GtkRequisition *requisition);
gboolean gtk_widget_child_focus (GtkWidget *widget,
GtkDirectionType direction);
gboolean gtk_widget_keynav_failed (GtkWidget *widget,
GtkDirectionType direction);
void gtk_widget_error_bell (GtkWidget *widget);
void gtk_widget_set_size_request (GtkWidget *widget,
gint width,
gint height);
void gtk_widget_get_size_request (GtkWidget *widget,
gint *width,
gint *height);
void gtk_widget_set_events (GtkWidget *widget,
gint events);
void gtk_widget_add_events (GtkWidget *widget,
gint events);
void gtk_widget_set_device_events (GtkWidget *widget,
GdkDevice *device,
GdkEventMask events);
void gtk_widget_add_device_events (GtkWidget *widget,
GdkDevice *device,
GdkEventMask events);
GDK_AVAILABLE_IN_3_8
void gtk_widget_set_opacity (GtkWidget *widget,
double opacity);
GDK_AVAILABLE_IN_3_8
double gtk_widget_get_opacity (GtkWidget *widget);
void gtk_widget_set_device_enabled (GtkWidget *widget,
GdkDevice *device,
gboolean enabled);
gboolean gtk_widget_get_device_enabled (GtkWidget *widget,
GdkDevice *device);
GtkWidget* gtk_widget_get_toplevel (GtkWidget *widget);
GtkWidget* gtk_widget_get_ancestor (GtkWidget *widget,
GType widget_type);
GdkVisual* gtk_widget_get_visual (GtkWidget *widget);
void gtk_widget_set_visual (GtkWidget *widget,
GdkVisual *visual);
GdkScreen * gtk_widget_get_screen (GtkWidget *widget);
gboolean gtk_widget_has_screen (GtkWidget *widget);
GdkDisplay * gtk_widget_get_display (GtkWidget *widget);
GdkWindow * gtk_widget_get_root_window (GtkWidget *widget);
GtkSettings* gtk_widget_get_settings (GtkWidget *widget);
GtkClipboard *gtk_widget_get_clipboard (GtkWidget *widget,
GdkAtom selection);
/* Expand flags and related support */
gboolean gtk_widget_get_hexpand (GtkWidget *widget);
void gtk_widget_set_hexpand (GtkWidget *widget,
gboolean expand);
gboolean gtk_widget_get_hexpand_set (GtkWidget *widget);
void gtk_widget_set_hexpand_set (GtkWidget *widget,
gboolean set);
gboolean gtk_widget_get_vexpand (GtkWidget *widget);
void gtk_widget_set_vexpand (GtkWidget *widget,
gboolean expand);
gboolean gtk_widget_get_vexpand_set (GtkWidget *widget);
void gtk_widget_set_vexpand_set (GtkWidget *widget,
gboolean set);
void gtk_widget_queue_compute_expand (GtkWidget *widget);
gboolean gtk_widget_compute_expand (GtkWidget *widget,
GtkOrientation orientation);
/* Multidevice support */
gboolean gtk_widget_get_support_multidevice (GtkWidget *widget);
void gtk_widget_set_support_multidevice (GtkWidget *widget,
gboolean support_multidevice);
/* Accessibility support */
GDK_AVAILABLE_IN_3_2
void gtk_widget_class_set_accessible_type (GtkWidgetClass *widget_class,
GType type);
GDK_AVAILABLE_IN_3_2
void gtk_widget_class_set_accessible_role (GtkWidgetClass *widget_class,
AtkRole role);
AtkObject* gtk_widget_get_accessible (GtkWidget *widget);
/* Margin and alignment */
GtkAlign gtk_widget_get_halign (GtkWidget *widget);
void gtk_widget_set_halign (GtkWidget *widget,
GtkAlign align);
GtkAlign gtk_widget_get_valign (GtkWidget *widget);
void gtk_widget_set_valign (GtkWidget *widget,
GtkAlign align);
gint gtk_widget_get_margin_left (GtkWidget *widget);
void gtk_widget_set_margin_left (GtkWidget *widget,
gint margin);
gint gtk_widget_get_margin_right (GtkWidget *widget);
void gtk_widget_set_margin_right (GtkWidget *widget,
gint margin);
gint gtk_widget_get_margin_top (GtkWidget *widget);
void gtk_widget_set_margin_top (GtkWidget *widget,
gint margin);
gint gtk_widget_get_margin_bottom (GtkWidget *widget);
void gtk_widget_set_margin_bottom (GtkWidget *widget,
gint margin);
gint gtk_widget_get_events (GtkWidget *widget);
GdkEventMask gtk_widget_get_device_events (GtkWidget *widget,
GdkDevice *device);
GDK_DEPRECATED_IN_3_4_FOR(gdk_window_get_device_position)
void gtk_widget_get_pointer (GtkWidget *widget,
gint *x,
gint *y);
gboolean gtk_widget_is_ancestor (GtkWidget *widget,
GtkWidget *ancestor);
gboolean gtk_widget_translate_coordinates (GtkWidget *src_widget,
GtkWidget *dest_widget,
gint src_x,
gint src_y,
gint *dest_x,
gint *dest_y);
/* Hide widget and return TRUE.
*/
gboolean gtk_widget_hide_on_delete (GtkWidget *widget);
/* Functions to override widget styling */
void gtk_widget_override_color (GtkWidget *widget,
GtkStateFlags state,
const GdkRGBA *color);
void gtk_widget_override_background_color (GtkWidget *widget,
GtkStateFlags state,
const GdkRGBA *color);
void gtk_widget_override_font (GtkWidget *widget,
const PangoFontDescription *font_desc);
void gtk_widget_override_symbolic_color (GtkWidget *widget,
const gchar *name,
const GdkRGBA *color);
void gtk_widget_override_cursor (GtkWidget *widget,
const GdkRGBA *cursor,
const GdkRGBA *secondary_cursor);
void gtk_widget_reset_style (GtkWidget *widget);
PangoContext *gtk_widget_create_pango_context (GtkWidget *widget);
PangoContext *gtk_widget_get_pango_context (GtkWidget *widget);
PangoLayout *gtk_widget_create_pango_layout (GtkWidget *widget,
const gchar *text);
GdkPixbuf *gtk_widget_render_icon_pixbuf (GtkWidget *widget,
const gchar *stock_id,
GtkIconSize size);
/* handle composite names for GTK_COMPOSITE_CHILD widgets,
* the returned name is newly allocated.
*/
void gtk_widget_set_composite_name (GtkWidget *widget,
const gchar *name);
gchar* gtk_widget_get_composite_name (GtkWidget *widget);
/* Push/pop pairs, to change default values upon a widget's creation.
* This will override the values that got set by the
* gtk_widget_set_default_* () functions.
*/
void gtk_widget_push_composite_child (void);
void gtk_widget_pop_composite_child (void);
/* widget style properties
*/
void gtk_widget_class_install_style_property (GtkWidgetClass *klass,
GParamSpec *pspec);
void gtk_widget_class_install_style_property_parser (GtkWidgetClass *klass,
GParamSpec *pspec,
GtkRcPropertyParser parser);
GParamSpec* gtk_widget_class_find_style_property (GtkWidgetClass *klass,
const gchar *property_name);
GParamSpec** gtk_widget_class_list_style_properties (GtkWidgetClass *klass,
guint *n_properties);
void gtk_widget_style_get_property (GtkWidget *widget,
const gchar *property_name,
GValue *value);
void gtk_widget_style_get_valist (GtkWidget *widget,
const gchar *first_property_name,
va_list var_args);
void gtk_widget_style_get (GtkWidget *widget,
const gchar *first_property_name,
...) G_GNUC_NULL_TERMINATED;
/* Functions for setting directionality for widgets */
void gtk_widget_set_direction (GtkWidget *widget,
GtkTextDirection dir);
GtkTextDirection gtk_widget_get_direction (GtkWidget *widget);
void gtk_widget_set_default_direction (GtkTextDirection dir);
GtkTextDirection gtk_widget_get_default_direction (void);
/* Compositing manager functionality */
gboolean gtk_widget_is_composited (GtkWidget *widget);
/* Counterpart to gdk_window_shape_combine_region.
*/
void gtk_widget_shape_combine_region (GtkWidget *widget,
cairo_region_t *region);
void gtk_widget_input_shape_combine_region (GtkWidget *widget,
cairo_region_t *region);
GList* gtk_widget_list_mnemonic_labels (GtkWidget *widget);
void gtk_widget_add_mnemonic_label (GtkWidget *widget,
GtkWidget *label);
void gtk_widget_remove_mnemonic_label (GtkWidget *widget,
GtkWidget *label);
void gtk_widget_set_tooltip_window (GtkWidget *widget,
GtkWindow *custom_window);
GtkWindow *gtk_widget_get_tooltip_window (GtkWidget *widget);
void gtk_widget_trigger_tooltip_query (GtkWidget *widget);
void gtk_widget_set_tooltip_text (GtkWidget *widget,
const gchar *text);
gchar * gtk_widget_get_tooltip_text (GtkWidget *widget);
void gtk_widget_set_tooltip_markup (GtkWidget *widget,
const gchar *markup);
gchar * gtk_widget_get_tooltip_markup (GtkWidget *widget);
void gtk_widget_set_has_tooltip (GtkWidget *widget,
gboolean has_tooltip);
gboolean gtk_widget_get_has_tooltip (GtkWidget *widget);
gboolean gtk_cairo_should_draw_window (cairo_t *cr,
GdkWindow *window);
void gtk_cairo_transform_to_window (cairo_t *cr,
GtkWidget *widget,
GdkWindow *window);
GType gtk_requisition_get_type (void) G_GNUC_CONST;
GtkRequisition *gtk_requisition_new (void) G_GNUC_MALLOC;
GtkRequisition *gtk_requisition_copy (const GtkRequisition *requisition);
void gtk_requisition_free (GtkRequisition *requisition);
gboolean gtk_widget_in_destruction (GtkWidget *widget);
GtkStyleContext * gtk_widget_get_style_context (GtkWidget *widget);
GtkWidgetPath * gtk_widget_get_path (GtkWidget *widget);
GDK_AVAILABLE_IN_3_4
GdkModifierType gtk_widget_get_modifier_mask (GtkWidget *widget,
GdkModifierIntent intent);
GDK_AVAILABLE_IN_3_6
void gtk_widget_insert_action_group (GtkWidget *widget,
const gchar *name,
GActionGroup *group);
GDK_AVAILABLE_IN_3_8
guint gtk_widget_add_tick_callback (GtkWidget *widget,
GtkTickCallback callback,
gpointer user_data,
GDestroyNotify notify);
GDK_AVAILABLE_IN_3_8
void gtk_widget_remove_tick_callback (GtkWidget *widget,
guint id);
G_END_DECLS
#endif /* __GTK_WIDGET_H__ */
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