gnome-shell/src/st/st-widget.h
Alejandro Piñeiro bd28d5c48a a11y: add the possibility to set the accessible object of a widget
In the common case, the accessible object is created by the
own widget. In some cases it is needed to specify a custom
accessible, as some of the logic will be implemented on the
javascript code (extend functionality using Components vs Hierarchy).

https://bugzilla.gnome.org/show_bug.cgi?id=648623
2013-08-28 16:05:54 +02:00

181 lines
8.4 KiB
C

/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/*
* st-widget.h: Base class for St actors
*
* Copyright 2007 OpenedHand
* Copyright 2008, 2009 Intel Corporation.
* Copyright 2009, 2010 Red Hat, Inc.
* Copyright 2009 Abderrahim Kitouni
* Copyright 2010 Florian Müllner
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU Lesser General Public License,
* version 2.1, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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 program. If not, see <http://www.gnu.org/licenses/>.
*/
#if !defined(ST_H_INSIDE) && !defined(ST_COMPILATION)
#error "Only <st/st.h> can be included directly.h"
#endif
#ifndef __ST_WIDGET_H__
#define __ST_WIDGET_H__
#include <clutter/clutter.h>
#include <st/st-types.h>
#include <st/st-theme.h>
#include <st/st-theme-node.h>
G_BEGIN_DECLS
#define ST_TYPE_WIDGET (st_widget_get_type ())
#define ST_WIDGET(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), ST_TYPE_WIDGET, StWidget))
#define ST_IS_WIDGET(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), ST_TYPE_WIDGET))
#define ST_WIDGET_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), ST_TYPE_WIDGET, StWidgetClass))
#define ST_IS_WIDGET_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), ST_TYPE_WIDGET))
#define ST_WIDGET_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), ST_TYPE_WIDGET, StWidgetClass))
typedef struct _StWidget StWidget;
typedef struct _StWidgetPrivate StWidgetPrivate;
typedef struct _StWidgetClass StWidgetClass;
/**
* StWidget:
*
* Base class for stylable actors. The contents of the #StWidget
* structure are private and should only be accessed through the
* public API.
*/
struct _StWidget
{
/*< private >*/
ClutterActor parent_instance;
StWidgetPrivate *priv;
};
/**
* StWidgetClass:
*
* Base class for stylable actors.
*/
struct _StWidgetClass
{
/*< private >*/
ClutterActorClass parent_class;
/* signals */
void (* style_changed) (StWidget *self);
void (* popup_menu) (StWidget *self);
/* vfuncs */
/**
* StWidgetClass::navigate_focus:
* @self: the "top level" container
* @from: (allow-none): the actor that the focus is coming from
* @direction: the direction focus is moving in
*/
gboolean (* navigate_focus) (StWidget *self,
ClutterActor *from,
GtkDirectionType direction);
GType (* get_accessible_type) (void);
GList * (* get_focus_chain) (StWidget *widget);
};
GType st_widget_get_type (void) G_GNUC_CONST;
void st_widget_set_style_pseudo_class (StWidget *actor,
const gchar *pseudo_class_list);
void st_widget_add_style_pseudo_class (StWidget *actor,
const gchar *pseudo_class);
void st_widget_remove_style_pseudo_class (StWidget *actor,
const gchar *pseudo_class);
const gchar * st_widget_get_style_pseudo_class (StWidget *actor);
gboolean st_widget_has_style_pseudo_class (StWidget *actor,
const gchar *pseudo_class);
void st_widget_set_style_class_name (StWidget *actor,
const gchar *style_class_list);
void st_widget_add_style_class_name (StWidget *actor,
const gchar *style_class);
void st_widget_remove_style_class_name (StWidget *actor,
const gchar *style_class);
const gchar * st_widget_get_style_class_name (StWidget *actor);
gboolean st_widget_has_style_class_name (StWidget *actor,
const gchar *style_class);
void st_widget_set_style (StWidget *actor,
const gchar *style);
const gchar * st_widget_get_style (StWidget *actor);
void st_widget_set_theme (StWidget *actor,
StTheme *theme);
StTheme * st_widget_get_theme (StWidget *actor);
void st_widget_set_track_hover (StWidget *widget,
gboolean track_hover);
gboolean st_widget_get_track_hover (StWidget *widget);
void st_widget_set_hover (StWidget *widget,
gboolean hover);
void st_widget_sync_hover (StWidget *widget);
gboolean st_widget_get_hover (StWidget *widget);
void st_widget_popup_menu (StWidget *self);
void st_widget_ensure_style (StWidget *widget);
void st_widget_set_can_focus (StWidget *widget,
gboolean can_focus);
gboolean st_widget_get_can_focus (StWidget *widget);
gboolean st_widget_navigate_focus (StWidget *widget,
ClutterActor *from,
GtkDirectionType direction,
gboolean wrap_around);
ClutterActor * st_widget_get_label_actor (StWidget *widget);
void st_widget_set_label_actor (StWidget *widget,
ClutterActor *label);
/* Only to be used by sub-classes of StWidget */
void st_widget_style_changed (StWidget *widget);
StThemeNode * st_widget_get_theme_node (StWidget *widget);
StThemeNode * st_widget_peek_theme_node (StWidget *widget);
GList * st_widget_get_focus_chain (StWidget *widget);
void st_widget_paint_background (StWidget *widget);
/* debug methods */
char *st_describe_actor (ClutterActor *actor);
void st_set_slow_down_factor (gfloat factor);
gfloat st_get_slow_down_factor (void);
/* accessibility methods */
void st_widget_set_accessible_role (StWidget *widget,
AtkRole role);
AtkRole st_widget_get_accessible_role (StWidget *widget);
void st_widget_add_accessible_state (StWidget *widget,
AtkStateType state);
void st_widget_remove_accessible_state (StWidget *widget,
AtkStateType state);
void st_widget_set_accessible_name (StWidget *widget,
const gchar *name);
const gchar * st_widget_get_accessible_name (StWidget *widget);
void st_widget_set_accessible (StWidget *widget,
AtkObject *accessible);
/* utility methods */
void st_get_align_factors (StAlign x_align,
StAlign y_align,
gdouble *x_align_out,
gdouble *y_align_out);
G_END_DECLS
#endif /* __ST_WIDGET_H__ */