755f41f559
We can replace it by adding a return value to set_size() that can tell us if the set_size() invalidated the contents of the canvas or not.
102 lines
3.1 KiB
C
102 lines
3.1 KiB
C
/*
|
|
* Clutter.
|
|
*
|
|
* An OpenGL based 'interactive canvas' library.
|
|
*
|
|
* Copyright (C) 2012 Intel Corporation.
|
|
*
|
|
* 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/>.
|
|
*
|
|
* Author:
|
|
* Emmanuele Bassi <ebassi@linux.intel.com>
|
|
*/
|
|
|
|
#if !defined(__CLUTTER_H_INSIDE__) && !defined(CLUTTER_COMPILATION)
|
|
#error "Only <clutter/clutter.h> can be included directly."
|
|
#endif
|
|
|
|
#ifndef __CLUTTER_CANVAS_H__
|
|
#define __CLUTTER_CANVAS_H__
|
|
|
|
#include <clutter/clutter-types.h>
|
|
|
|
G_BEGIN_DECLS
|
|
|
|
#define CLUTTER_TYPE_CANVAS (clutter_canvas_get_type ())
|
|
#define CLUTTER_CANVAS(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), CLUTTER_TYPE_CANVAS, ClutterCanvas))
|
|
#define CLUTTER_IS_CANVAS(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), CLUTTER_TYPE_CANVAS))
|
|
#define CLUTTER_CANVAS_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), CLUTTER_TYPE_CANVAS, ClutterCanvasClass))
|
|
#define CLUTTER_IS_CANVAS_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), CLUTTER_TYPE_CANVAS))
|
|
#define CLUTTER_CANVAS_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), CLUTTER_TYPE_CANVAS, ClutterCanvasClass))
|
|
|
|
typedef struct _ClutterCanvas ClutterCanvas;
|
|
typedef struct _ClutterCanvasPrivate ClutterCanvasPrivate;
|
|
typedef struct _ClutterCanvasClass ClutterCanvasClass;
|
|
|
|
/**
|
|
* ClutterCanvas:
|
|
*
|
|
* The <structname>ClutterCanvas</structname> structure contains
|
|
* private data and should only be accessed using the provided
|
|
* API.
|
|
*
|
|
* Since: 1.10
|
|
*/
|
|
struct _ClutterCanvas
|
|
{
|
|
/*< private >*/
|
|
GObject parent_instance;
|
|
|
|
ClutterCanvasPrivate *priv;
|
|
};
|
|
|
|
/**
|
|
* ClutterCanvasClass:
|
|
* @draw: class handler for the #ClutterCanvas::draw signal
|
|
*
|
|
* The <structname>ClutterCanvasClass</structname> structure contains
|
|
* private data.
|
|
*
|
|
* Since: 1.10
|
|
*/
|
|
struct _ClutterCanvasClass
|
|
{
|
|
/*< private >*/
|
|
GObjectClass parent_class;
|
|
|
|
/*< public >*/
|
|
gboolean (* draw) (ClutterCanvas *canvas,
|
|
cairo_t *cr,
|
|
int width,
|
|
int height);
|
|
|
|
/*< private >*/
|
|
gpointer _padding[16];
|
|
};
|
|
|
|
CLUTTER_AVAILABLE_IN_1_10
|
|
GType clutter_canvas_get_type (void) G_GNUC_CONST;
|
|
|
|
CLUTTER_AVAILABLE_IN_1_10
|
|
ClutterContent * clutter_canvas_new (void);
|
|
CLUTTER_AVAILABLE_IN_1_10
|
|
gboolean clutter_canvas_set_size (ClutterCanvas *canvas,
|
|
int width,
|
|
int height);
|
|
|
|
|
|
G_END_DECLS
|
|
|
|
#endif /* __CLUTTER_CANVAS_H__ */
|