1 /*

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

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

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

     6 * which accompanies this distribution, and is available

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

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:   Definition of CHuiVg10CanvasRenderBuffer

    15 *

    16 */

    17 

    18 

    19 

    20 #ifndef HUIVG10CANVASRENDERBUFFER_H_

    21 #define HUIVG10CANVASRENDERBUFFER_H_

    22 

    23 

    24 #include <e32base.h>

    25 #include <VG/openvg.h>

    26 #include <EGL/egl.h>

    27 #include "huicanvasrenderbuffer.h"

    28 #include "uiacceltk/HuiGc.h"

    29 #include "HuiVg10RenderPlugin.h"

    30     

    31 /* Forward declarations. */    

    32 class CHuiRenderPlugin;

    33 

    34 NONSHARABLE_CLASS (CHuiVg10CanvasRenderBuffer) : public CHuiCanvasRenderBuffer

    35     {

    36 public:

    37 

    38     /**

    39      * Constructor.

    40      */

    41     CHuiVg10CanvasRenderBuffer();

    42 

    43     /**

    44      * Destructor.

    45      */ 

    46     ~CHuiVg10CanvasRenderBuffer();

    47     

    48     

    49 public: // From CHuiCanvasRenderBuffer    

    50 

    51     /**

    52      * Initializes render buffer.

    53      */

    54     void InitializeL(const TSize& aSize);

    55     

    56     /**

    57      * Releases render target resources.

    58      */

    59     void UnInitialize();

    60     

    61     /**

    62      * Binds as render buffer.

    63      */ 

    64     void Bind();

    65     

    66     /**

    67      * Unbinds as render target and restores the previous target.

    68      */ 

    69     void UnBind();

    70     

    71     /**

    72      * Copies content from the given buffer

    73      */ 

    74     void Copy(const CHuiCanvasRenderBuffer& aSourceBuffer);    

    75 

    76     /**

    77      * Copies content from the active surface.

    78      */ 

    79     void Copy(TPoint aPoint);    

    80     

    81 public:

    82     

    83     VGImage Image() const;

    84     

    85 private:

    86     

    87     void PushEGLContext();

    88     void PopEGLContext();

    89     void ReadBackground(TPoint aPosition);

    90         

    91 private:

    92  

    93     CHuiGc*                 iGc;

    94     VGImage                 iImage;

    95     VGImage                 iRotatedImage;

    96     EGLContext              iContext;

    97     EGLSurface              iSurface;    

    98     EGLContext              iSavedContext;

    99     EGLSurface              iSavedReadSurface;

   100     EGLSurface              iSavedDrawSurface;

   101     TEGLState               iPreviousEGLState;

   102     };

   103 

   104 #endif /* HUIVG10CANVASRENDERBUFFER_H_ */