1 /*

     2 * Copyright (c) 2009 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:     

    15 *

    16 */

    17 

    18 #ifndef HGVGDRAWBUFFER_H_

    19 #define HGVGDRAWBUFFER_H_

    20 

    21 // INCLUDES

    22 #include <e32base.h>

    23 #include <VG/openvg.h>

    24 #include <gulcolor.h>

    25 

    26 /**

    27  * Helper class for rendering graphics to offscreen buffer

    28  * using avkon and then copying that buffer to OpenVG images.

    29  */

    30 NONSHARABLE_CLASS(CHgVgDrawBuffer) : public CBase

    31     {

    32 public:

    33 

    34     /**

    35      * Creates new CHgVgDrawBuffer

    36      * 

    37      * @param aDrawBufferSize

    38      * @param aDisplayMode

    39      * @return HgVgDrawBuffer-object

    40      */

    41     static CHgVgDrawBuffer* NewL (const TSize& aDrawBufferSize, const TDisplayMode& aMode); 

    42         

    43     // Destructor.

    44     virtual ~CHgVgDrawBuffer();

    45 

    46 public: // METHODS

    47 

    48     /**

    49      * Getter for buffer size in pixels.

    50      * 

    51      * @return buffer size in pixels.

    52      */

    53     const TSize& BufferSize() const;

    54     

    55     /**

    56      * Getter for draw context.

    57      * 

    58      * @return reference to CFbsBitGc-object.

    59      */

    60     CFbsBitGc& Gc();

    61     

    62     /**

    63      * 

    64      */

    65     CFbsBitmap& DrawBuffer();

    66         

    67     /**

    68      * Clears draw buffer

    69      * 

    70      * @param aColor color to clear.

    71      */

    72     void Clear(const TRect& aRect, const TRgb& aColor);

    73         

    74     /**

    75      * Draws text to draw buffer.

    76      * 

    77      * @param aText text.

    78      * @param aFont font to use for text rendering.

    79      * @param aColor color to use for text rendering.

    80      * @param aPosition position to render.

    81      */

    82     void DrawText(const TDesC& aText, const CFont* aFont, 

    83             const TRgb& aColor, const TPoint& aPosition);

    84     

    85     /**

    86      * Gets drawbuffer to VGImage.

    87      * 

    88      * @param aSrcRect rectangle in draw buffer to copy to the image.

    89      * @param aDestRect rectangle in image.

    90      * @param aDestImage destination image.

    91      */

    92     void GetDrawBufferToVgImage(const TRect& aSrcRect, 

    93             const TPoint& aDest, VGImage destImage, VGImageFormat destFormat);

    94         

    95 protected: // Constructors

    96     CHgVgDrawBuffer( );

    97 

    98     void ConstructL (const TSize& aBufferSize, const TDisplayMode& aMode );

    99     

   100 private: // Data

   101         

   102     CFbsBitmapDevice* iDevice; // owns

   103     CFbsBitmap* iDrawBuffer; // owns

   104     CFbsBitGc* iGc; // owns

   105     TSize iBufferSize;

   106 

   107     };

   108 

   109 #endif /* HGVGDRAWBUFFER_H_ */