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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
/*
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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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* Copyright (C) 2012 Intel Corporation.
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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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* Author:
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* Emmanuele Bassi <ebassi@linux.intel.com>
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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_CANVAS_H__
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#define __CLUTTER_CANVAS_H__
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#include <clutter/clutter-types.h>
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G_BEGIN_DECLS
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#define CLUTTER_TYPE_CANVAS (clutter_canvas_get_type ())
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#define CLUTTER_CANVAS(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), CLUTTER_TYPE_CANVAS, ClutterCanvas))
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#define CLUTTER_IS_CANVAS(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), CLUTTER_TYPE_CANVAS))
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#define CLUTTER_CANVAS_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), CLUTTER_TYPE_CANVAS, ClutterCanvasClass))
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#define CLUTTER_IS_CANVAS_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), CLUTTER_TYPE_CANVAS))
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#define CLUTTER_CANVAS_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), CLUTTER_TYPE_CANVAS, ClutterCanvasClass))
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typedef struct _ClutterCanvas ClutterCanvas;
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typedef struct _ClutterCanvasPrivate ClutterCanvasPrivate;
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typedef struct _ClutterCanvasClass ClutterCanvasClass;
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/**
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* ClutterCanvas:
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*
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* The <structname>ClutterCanvas</structname> structure contains
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* private data and should only be accessed using the provided
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* API.
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*
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* Since: 1.10
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*/
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struct _ClutterCanvas
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{
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/*< private >*/
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GObject parent_instance;
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ClutterCanvasPrivate *priv;
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};
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/**
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* ClutterCanvasClass:
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* @draw: class handler for the #ClutterCanvas::draw signal
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*
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* The <structname>ClutterCanvasClass</structname> structure contains
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* private data.
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*
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* Since: 1.10
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*/
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struct _ClutterCanvasClass
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{
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/*< private >*/
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GObjectClass parent_class;
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/*< public >*/
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gboolean (* draw) (ClutterCanvas *canvas,
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cairo_t *cr,
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int width,
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int height);
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/*< private >*/
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gpointer _padding[16];
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};
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CLUTTER_AVAILABLE_IN_1_10
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GType clutter_canvas_get_type (void) G_GNUC_CONST;
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CLUTTER_AVAILABLE_IN_1_10
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ClutterContent * clutter_canvas_new (void);
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CLUTTER_AVAILABLE_IN_1_10
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gboolean clutter_canvas_set_size (ClutterCanvas *canvas,
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int width,
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int height);
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G_END_DECLS
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#endif /* __CLUTTER_CANVAS_H__ */
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