1 /* ATK - Accessibility Toolkit
2 * Copyright 2001 Sun Microsystems Inc.
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
14 * You should have received a copy of the GNU Library General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 * Boston, MA 02111-1307, USA.
20 #ifndef __ATK_UTIL_H__
21 #define __ATK_UTIL_H__
23 #include <atk/atkobject.h>
27 #endif /* __cplusplus */
29 #define ATK_TYPE_UTIL (atk_util_get_type ())
30 #define ATK_IS_UTIL(obj) G_TYPE_CHECK_INSTANCE_TYPE ((obj), ATK_TYPE_UTIL)
31 #define ATK_UTIL(obj) G_TYPE_CHECK_INSTANCE_CAST ((obj), ATK_TYPE_UTIL, AtkUtil)
32 #define ATK_UTIL_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), ATK_TYPE_UTIL, AtkUtilClass))
33 #define ATK_IS_UTIL_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), ATK_TYPE_UTIL))
34 #define ATK_UTIL_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), ATK_TYPE_UTIL, AtkUtilClass))
37 #ifndef _TYPEDEF_ATK_UTIL_
38 #define _TYPEDEF_ATK_UTIL_
39 typedef struct _AtkUtil AtkUtil;
40 typedef struct _AtkUtilClass AtkUtilClass;
41 typedef struct _AtkKeyEventStruct AtkKeyEventStruct;
45 * A focus tracker is a function which is called when an object
48 typedef void (*AtkEventListener) (AtkObject*);
49 typedef void (*AtkEventListenerInit) (void);
50 typedef gint (*AtkKeySnoopFunc) (AtkKeyEventStruct *event,
53 struct _AtkKeyEventStruct {
65 *@ATK_KEY_EVENT_PRESS: specifies a key press event
66 *@ATK_KEY_EVENT_RELEASE: specifies a key release event
67 *@ATK_KEY_EVENT_LAST_DEFINED: Not a valid value; specifies end of enumeration
69 *Specifies the type of a keyboard evemt.
74 ATK_KEY_EVENT_RELEASE,
75 ATK_KEY_EVENT_LAST_DEFINED
86 guint (* add_global_event_listener) (GSignalEmissionHook listener,
87 const gchar *event_type);
88 void (* remove_global_event_listener) (guint listener_id);
89 guint (* add_key_event_listener) (AtkKeySnoopFunc listener,
91 void (* remove_key_event_listener) (guint listener_id);
92 AtkObject* (* get_root) (void);
93 G_CONST_RETURN gchar* (* get_toolkit_name) (void);
94 G_CONST_RETURN gchar* (* get_toolkit_version) (void);
96 GType atk_util_get_type (void);
100 *@ATK_XY_SCREEN: specifies xy coordinates relative to the screen
101 *@ATK_XY_WINDOW: specifies xy coordinates relative to the widget's
104 *Specifies how xy coordinates are to be interpreted. Used by functions such
105 *as atk_component_get_position() and atk_text_get_character_extents()
113 * Adds the specified function to the list of functions to be called
114 * when an object receives focus.
116 guint atk_add_focus_tracker (AtkEventListener focus_tracker);
119 * Removes the specified focus tracker from the list of function
120 * to be called when any object receives focus
122 void atk_remove_focus_tracker (guint tracker_id);
125 * Specifies the function to be called for focus tracker initialization.
126 * removal. This function should be called by an implementation of the
127 * ATK interface if any specific work needs to be done to enable
130 void atk_focus_tracker_init (AtkEventListenerInit add_function);
133 * Cause the focus tracker functions which have been specified to be
134 * executed for the object.
136 void atk_focus_tracker_notify (AtkObject *object);
139 * Adds the specified function to the list of functions to be called
140 * when an event of type event_type occurs.
142 guint atk_add_global_event_listener (GSignalEmissionHook listener,
143 const gchar *event_type);
146 * Removes the specified event listener
148 void atk_remove_global_event_listener (guint listener_id);
151 * Adds the specified function to the list of functions to be called
152 * when an keyboard event occurs.
154 guint atk_add_key_event_listener (AtkKeySnoopFunc listener, gpointer data);
157 * Removes the specified event listener
159 void atk_remove_key_event_listener (guint listener_id);
162 * Returns the root accessible container for the current application.
164 AtkObject* atk_get_root(void);
167 * Returns name string for the GUI toolkit.
169 G_CONST_RETURN gchar *atk_get_toolkit_name (void);
172 * Returns version string for the GUI toolkit.
174 G_CONST_RETURN gchar *atk_get_toolkit_version (void);
178 #endif /* __cplusplus */
181 #endif /* __ATK_UTIL_H__ */