f44ccba42e
Events allocated by Clutter should have a pointer to platform-specific data; this would allow backends to add separate structures for holding ancillary data, whilst retaining the ClutterEvent structure for use on the stack. In theory, for Clutter 2.x we might just want to drop Event and use an opaque structure, or a typed data structure inheriting from GTypeInstance instead.
126 lines
6 KiB
C
126 lines
6 KiB
C
/*
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* Clutter.
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*
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* An OpenGL based 'interactive canvas' library.
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*
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* Authored By Matthew Allum <mallum@openedhand.com>
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*
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* Copyright (C) 2006 OpenedHand
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#if !defined(__CLUTTER_H_INSIDE__) && !defined(CLUTTER_COMPILATION)
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#error "Only <clutter/clutter.h> can be included directly."
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#endif
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#ifndef __CLUTTER_BACKEND_H__
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#define __CLUTTER_BACKEND_H__
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#include <cairo.h>
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#include <glib-object.h>
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#include <pango/pango.h>
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#include <clutter/clutter-actor.h>
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#include <clutter/clutter-device-manager.h>
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#include <clutter/clutter-event.h>
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#include <clutter/clutter-feature.h>
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#include <clutter/clutter-stage.h>
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#include <clutter/clutter-stage-window.h>
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G_BEGIN_DECLS
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#define CLUTTER_TYPE_BACKEND (clutter_backend_get_type ())
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#define CLUTTER_BACKEND(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), CLUTTER_TYPE_BACKEND, ClutterBackend))
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#define CLUTTER_IS_BACKEND(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), CLUTTER_TYPE_BACKEND))
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#define CLUTTER_BACKEND_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), CLUTTER_TYPE_BACKEND, ClutterBackendClass))
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#define CLUTTER_IS_BACKEND_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), CLUTTER_TYPE_BACKEND))
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#define CLUTTER_BACKEND_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), CLUTTER_TYPE_BACKEND, ClutterBackendClass))
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typedef struct _ClutterBackend ClutterBackend;
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typedef struct _ClutterBackendPrivate ClutterBackendPrivate;
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typedef struct _ClutterBackendClass ClutterBackendClass;
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struct _ClutterBackend
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{
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/*< private >*/
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GObject parent_instance;
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ClutterBackendPrivate *priv;
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};
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struct _ClutterBackendClass
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{
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/*< private >*/
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GObjectClass parent_class;
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/* vfuncs */
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gboolean (* pre_parse) (ClutterBackend *backend,
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GError **error);
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gboolean (* post_parse) (ClutterBackend *backend,
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GError **error);
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ClutterStageWindow * (* create_stage) (ClutterBackend *backend,
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ClutterStage *wrapper,
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GError **error);
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void (* init_events) (ClutterBackend *backend);
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void (* init_features) (ClutterBackend *backend);
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void (* add_options) (ClutterBackend *backend,
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GOptionGroup *group);
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ClutterFeatureFlags (* get_features) (ClutterBackend *backend);
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void (* redraw) (ClutterBackend *backend,
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ClutterStage *stage);
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gboolean (* create_context) (ClutterBackend *backend,
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GError **error);
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void (* ensure_context) (ClutterBackend *backend,
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ClutterStage *stage);
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ClutterDeviceManager *(* get_device_manager) (ClutterBackend *backend);
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void (* copy_event_data) (ClutterBackend *backend,
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ClutterEvent *src,
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ClutterEvent *dest);
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void (* free_event_data) (ClutterBackend *backend,
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ClutterEvent *event);
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/* signals */
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void (* resolution_changed) (ClutterBackend *backend);
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void (* font_changed) (ClutterBackend *backend);
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void (* settings_changed) (ClutterBackend *backend);
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};
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GType clutter_backend_get_type (void) G_GNUC_CONST;
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ClutterBackend *clutter_get_default_backend (void);
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#ifndef CLUTTER_DISABLE_DEPRECATED
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void clutter_backend_set_resolution (ClutterBackend *backend,
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gdouble dpi);
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void clutter_backend_set_double_click_time (ClutterBackend *backend,
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guint msec);
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guint clutter_backend_get_double_click_time (ClutterBackend *backend);
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void clutter_backend_set_double_click_distance (ClutterBackend *backend,
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guint distance);
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guint clutter_backend_get_double_click_distance (ClutterBackend *backend);
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void clutter_backend_set_font_name (ClutterBackend *backend,
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const gchar *font_name);
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G_CONST_RETURN gchar * clutter_backend_get_font_name (ClutterBackend *backend);
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#endif /* CLUTTER_DISABLE_DEPRECATED */
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gdouble clutter_backend_get_resolution (ClutterBackend *backend);
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void clutter_backend_set_font_options (ClutterBackend *backend,
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const cairo_font_options_t *options);
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const cairo_font_options_t *clutter_backend_get_font_options (ClutterBackend *backend);
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G_END_DECLS
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#endif /* __CLUTTER_BACKEND_H__ */
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