/*

* Copyright (c) 2006-2007 Nokia Corporation and/or its subsidiary(-ies). 

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:   Definition of CHuiVg10CanvasRenderBuffer

*

*/

#ifndef HUIVG10CANVASRENDERBUFFER_H_

#define HUIVG10CANVASRENDERBUFFER_H_

#include <e32base.h>

#include <VG/openvg.h>

#include <EGL/egl.h>

#include "huicanvasrenderbuffer.h"

#include "uiacceltk/HuiGc.h"

#include "HuiVg10RenderPlugin.h"

/* Forward declarations. */    

class CHuiRenderPlugin;

NONSHARABLE_CLASS (CHuiVg10CanvasRenderBuffer) : public CHuiCanvasRenderBuffer

    {

public:

    /**

     * Constructor.

     */

    CHuiVg10CanvasRenderBuffer();

    /**

     * Destructor.

     */ 

    ~CHuiVg10CanvasRenderBuffer();

public: // From CHuiCanvasRenderBuffer    

    /**

     * Initializes render buffer.

     */

    void InitializeL(const TSize& aSize);

    /**

     * Releases render target resources.

     */

    void UnInitialize();

    /**

     * Binds as render buffer.

     */ 

    void Bind();

    /**

     * Unbinds as render target and restores the previous target.

     */ 

    void UnBind();

    /**

     * Copies content from the given buffer

     */ 

    void Copy(const CHuiCanvasRenderBuffer& aSourceBuffer);    

    /**

     * Copies content from the active surface.

     */ 

    void Copy(TPoint aPoint);    

public:

    VGImage Image() const;

private:

    void PushEGLContext();

    void PopEGLContext();

    void ReadBackground(TPoint aPosition);

private:

    CHuiGc*                 iGc;

    VGImage                 iImage;

    VGImage                 iRotatedImage;

    EGLContext              iContext;

    EGLSurface              iSurface;    

    EGLContext              iSavedContext;

    EGLSurface              iSavedReadSurface;

    EGLSurface              iSavedDrawSurface;

    TEGLState               iPreviousEGLState;

    };

#endif /* HUIVG10CANVASRENDERBUFFER_H_ */