1 /*

     2 * Copyright (c) 2006 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:  4 bits for red, green and blue component in a pixel.

    15 *

    16 */

    17 

    18 

    19 #ifndef TMID444FORMAT_H

    20 #define TMID444FORMAT_H

    21 

    22 //  INCLUDES

    23 #include "TMIDFormatConverter.h"

    24 

    25 //  CONSTANTS

    26 const TUint16 K444RMax = 0xF00;

    27 const TUint16 K444GMax = 0x0F0;

    28 const TUint16 K444BMax = 0x00F;

    29 const TInt KBytesInPixel444 = 2;

    30 

    31 

    32 //  CLASS DEFINITION

    33 /**

    34  * 4 bits for red, green and blue component in a pixel, stored as a

    35  * short (0x0RGB).

    36  *

    37  */

    38 

    39 NONSHARABLE_CLASS(TMID444Format): public TMIDFormatConverter

    40 {

    41 public: //  initialization

    42     void InitializeL(const TMIDBitmapParameters& aParameters);

    43 

    44 public: // from TMIDFormatConverter

    45     // Convert from internal to int

    46     TUint32 ConvertInternal(const TMIDInternalARGB& aInternal);

    47 

    48     // Convert from int to internal

    49     void Convert(TMIDInternalARGB& aResult, TUint32 aColor) const;

    50 

    51     // Get pixel from current position

    52     void GetPixel(TMIDInternalARGB& aResult) const;

    53 

    54     // Get alpha which is in same format as bitmap

    55     TUint8 GetAlpha() const;

    56 

    57     // Plot pixel to current position

    58     void PlotPixel(const TMIDInternalARGB& aInternal);

    59 

    60     // Set bitmap and alpha bitmap

    61     void SetBitmap(TUint32* aBitmap)

    62     {

    63         iBitmap = (TUint16*)aBitmap;

    64     }

    65 

    66     // Get bitmap

    67     TUint32* Bitmap()

    68     {

    69         return (TUint32*)iBitmap;

    70     }

    71 protected: // from TMIDFormatConverter

    72     // checks how many pixels is occupied and is last pixel in that limit

    73     TBool CheckSize(TInt aPixelSize, TInt aLastDrawnPixelOffset);

    74 

    75 private: // data

    76     TUint16* iBitmap;

    77     TUint8* iAlphaBitmap;

    78 };

    79 

    80 #endif // TMID444FORMAT_H