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/* gtkaccessible.h: Accessible interface
*
* Copyright 2020 GNOME Foundation
*
* SPDX-License-Identifier: LGPL-2.1-or-later
*
* 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 2.1 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/>.
*/
#pragma once
#if !defined (__GTK_H_INSIDE__) && !defined (GTK_COMPILATION)
#error "Only <gtk/gtk.h> can be included directly."
#endif
#include <glib-object.h>
#include <gtk/gtktypes.h>
#include <gtk/gtkenums.h>
G_BEGIN_DECLS
#define GTK_TYPE_ACCESSIBLE (gtk_accessible_get_type())
GDK_AVAILABLE_IN_4_10
G_DECLARE_INTERFACE (GtkAccessible, gtk_accessible, GTK, ACCESSIBLE, GObject)
/**
* GtkAccessiblePlatformState:
* @GTK_ACCESSIBLE_PLATFORM_STATE_FOCUSABLE: whether the accessible can be focused
* @GTK_ACCESSIBLE_PLATFORM_STATE_FOCUSED: whether the accessible has focus
* @GTK_ACCESSIBLE_PLATFORM_STATE_ACTIVE: whether the accessible is active
*
* The various platform states which can be queried
* using [method@Gtk.Accessible.get_platform_state].
*
* Since: 4.10
*/
typedef enum {
GTK_ACCESSIBLE_PLATFORM_STATE_FOCUSABLE,
GTK_ACCESSIBLE_PLATFORM_STATE_FOCUSED,
GTK_ACCESSIBLE_PLATFORM_STATE_ACTIVE
} GtkAccessiblePlatformState;
/**
* GtkAccessibleInterface:
* @get_at_context: retrieve the platform-specific accessibility context
* for the accessible implementation
* @get_platform_state: retrieve the accessible state
*
* The common interface for accessible objects.
*
* Since: 4.10
*/
struct _GtkAccessibleInterface
{
GTypeInterface g_iface;
/**
* GtkAccessibleInterface::get_at_context:
* @self: an accessible object
*
* Retrieves the platform-specific accessibility context for the
* accessible implementation.
*
* Returns: (transfer full) (nullable): the accessibility context
*
* Since: 4.10
*/
GtkATContext * (* get_at_context) (GtkAccessible *self);
/**
* GtkAccessibleInterface::get_platform_state:
* @self: an accessible object
* @state: the state to query
*
* Checks if the given @state applies to the accessible object.
*
* Returns: true if the @state is set, and false otherwise
*
* Since: 4.10
*/
gboolean (* get_platform_state) (GtkAccessible *self,
GtkAccessiblePlatformState state);
/**
* GtkAccessibleInterface::get_accessible_parent:
* @self: an accessible object
*
* Retrieves the accessible parent of an accessible object.
*
* This virtual function should return `NULL` for top level objects.
*
* Returns: (nullable) (transfer full): the accessible parent
*
* Since: 4.10
*/
GtkAccessible * (* get_accessible_parent) (GtkAccessible *self);
/**
* GtkaccessibleInterface::get_first_accessible_child:
* @self: an accessible object
*
* Retrieves the first accessible child of an accessible object.
*
* Returns: (transfer full) (nullable): an accessible object
*
* Since: 4.10
*/
GtkAccessible * (* get_first_accessible_child) (GtkAccessible *self);
/**
* GtkaccessibleInterface::get_next_accessible_sibling:
* @self: an accessible object
*
* Retrieves the next accessible sibling of an accessible object.
*
* Returns: (transfer full) (nullable): an accessible object
*
* Since: 4.10
*/
GtkAccessible * (* get_next_accessible_sibling) (GtkAccessible *self);
/**
* GtkAccessibleInterface::get_bounds:
* @self: an accessible object
* @x: (out): the horizontal coordinate of a rectangle
* @y: (out): the vertical coordinate of a rectangle
* @width: (out): the width of a rectangle
* @height: (out): the height of a rectangle
*
* Retrieves the dimensions and position of an accessible object in its
* parent's coordinate space, if those values can be determined.
*
* For top level accessible objects, the X and Y coordinates are always
* going to be set to zero.
*
* Returns: true if the values are value, and false otherwise
*/
gboolean (* get_bounds) (GtkAccessible *self,
int *x,
int *y,
int *width,
int *height);
};
GDK_AVAILABLE_IN_ALL
GtkATContext * gtk_accessible_get_at_context (GtkAccessible *self);
GDK_AVAILABLE_IN_4_10
gboolean gtk_accessible_get_platform_state (GtkAccessible *self,
GtkAccessiblePlatformState state);
GDK_AVAILABLE_IN_4_10
GtkAccessible * gtk_accessible_get_accessible_parent (GtkAccessible *self);
GDK_AVAILABLE_IN_4_10
void gtk_accessible_set_accessible_parent (GtkAccessible *self,
GtkAccessible *parent,
GtkAccessible *next_sibling);
GDK_AVAILABLE_IN_4_10
GtkAccessible * gtk_accessible_get_first_accessible_child (GtkAccessible *self);
GDK_AVAILABLE_IN_4_10
GtkAccessible * gtk_accessible_get_next_accessible_sibling (GtkAccessible *self);
GDK_AVAILABLE_IN_4_10
void gtk_accessible_update_next_accessible_sibling (GtkAccessible *self,
GtkAccessible *new_sibling);
GDK_AVAILABLE_IN_4_10
gboolean gtk_accessible_get_bounds (GtkAccessible *self,
int *x,
int *y,
int *width,
int *height);
GDK_AVAILABLE_IN_ALL
GtkAccessibleRole gtk_accessible_get_accessible_role (GtkAccessible *self);
GDK_AVAILABLE_IN_ALL
void gtk_accessible_update_state (GtkAccessible *self,
GtkAccessibleState first_state,
...);
GDK_AVAILABLE_IN_ALL
void gtk_accessible_update_property (GtkAccessible *self,
GtkAccessibleProperty first_property,
...);
GDK_AVAILABLE_IN_ALL
void gtk_accessible_update_relation (GtkAccessible *self,
GtkAccessibleRelation first_relation,
...);
GDK_AVAILABLE_IN_ALL
void gtk_accessible_update_state_value (GtkAccessible *self,
int n_states,
GtkAccessibleState states[],
const GValue values[]);
GDK_AVAILABLE_IN_ALL
void gtk_accessible_update_property_value (GtkAccessible *self,
int n_properties,
GtkAccessibleProperty properties[],
const GValue values[]);
GDK_AVAILABLE_IN_ALL
void gtk_accessible_update_relation_value (GtkAccessible *self,
int n_relations,
GtkAccessibleRelation relations[],
const GValue values[]);
GDK_AVAILABLE_IN_ALL
void gtk_accessible_reset_state (GtkAccessible *self,
GtkAccessibleState state);
GDK_AVAILABLE_IN_ALL
void gtk_accessible_reset_property (GtkAccessible *self,
GtkAccessibleProperty property);
GDK_AVAILABLE_IN_ALL
void gtk_accessible_reset_relation (GtkAccessible *self,
GtkAccessibleRelation relation);
GDK_AVAILABLE_IN_ALL
void gtk_accessible_state_init_value (GtkAccessibleState state,
GValue *value);
GDK_AVAILABLE_IN_ALL
void gtk_accessible_property_init_value (GtkAccessibleProperty property,
GValue *value);
GDK_AVAILABLE_IN_ALL
void gtk_accessible_relation_init_value (GtkAccessibleRelation relation,
GValue *value);
G_END_DECLS
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