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cocos2d/cocos/2d/CCGrabber.h

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+/****************************************************************************
+Copyright (c) 2009      On-Core
+Copyright (c) 2010-2012 cocos2d-x.org
+Copyright (C) 2013-2014 Chukong Technologies Inc.
+ 
+http://www.cocos2d-x.org
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+****************************************************************************/
+#ifndef __EFFECTS_CCGRABBER_H__
+#define __EFFECTS_CCGRABBER_H__
+
+#include "base/CCRef.h"
+#include "platform/CCGL.h"
+
+NS_CC_BEGIN
+
+class Texture2D;
+
+/**
+ * @addtogroup _2d
+ * @{
+ */
+
+/** FBO class that grabs the the contents of the screen */
+class Grabber : public Ref
+{
+public:
+    /**
+    Constructor.
+     * @js ctor
+     */
+    Grabber(void);
+    /**
+    Destructor.
+     * @js NA
+     * @lua NA
+     */
+    ~Grabber(void);
+    /**Init the grab structure, will set the texture as the FBO color attachment.*/
+    void grab(Texture2D *texture);
+    /**Begin capture the screen, which will save the old FBO, clear color, and set the new FBO, clear the background.*/
+    void beforeRender(Texture2D *texture);
+    /**After capture, will reset the old FBO and clear color.*/
+    void afterRender(Texture2D *texture);
+
+protected:
+    GLuint _FBO;
+    GLint _oldFBO;
+    GLfloat _oldClearColor[4];
+};
+
+// end of effects group
+/// @}
+
+NS_CC_END
+
+#endif // __EFFECTS_CCGRABBER_H__