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:  1 bit format, 2 distinct color values, stored as a byte.

    15 *

    16 */

    17 

    18 

    19 #ifndef TMIDGRAY1_H

    20 #define TMIDGRAY1_H

    21 

    22 

    23 //  INCLUDES

    24 #include "TMIDFormatConverter.h"

    25 

    26 //  CONSTANTS

    27 const TInt KPixelsInByteGray1 = 8;

    28 const TInt KGray1Shift = 3;

    29 

    30 //  CLASS DEFINITION

    31 /**

    32  * 1 bit format, 2 distinct color values (on/off), stored as

    33  * a byte. 8 pixel values in a single byte, packed as close

    34  * as possible.

    35  */

    36 

    37 NONSHARABLE_CLASS(TMIDGray1): public TMIDFormatConverter

    38 {

    39 public: //  initialization

    40     void InitializeL(const TMIDBitmapParameters& aParameters);

    41 

    42 public: // from TMIDFormatConverter

    43     // Convert from internal to int

    44     TUint32 ConvertInternal(const TMIDInternalARGB& aInternal);

    45 

    46     // Convert from int to internal

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

    48 

    49     // Get pixel from current position

    50     void GetPixel(TMIDInternalARGB& aResult) const;

    51 

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

    53     TUint8 GetAlpha() const;

    54 

    55     // Plot pixel to current position

    56     void PlotPixel(const TMIDInternalARGB& aInternal);

    57 

    58     // Plot pixel with alpha

    59     void PlotPixelWithAlpha(const TMIDInternalARGB& aInternal);

    60 

    61     // Set bitmap

    62     void SetBitmap(TUint32* aBitmap)

    63     {

    64         iBitmap = (TUint8*)aBitmap;

    65     }

    66 

    67     // Get bitmap

    68     TUint32* Bitmap()

    69     {

    70         return (TUint32*)iBitmap;

    71     }

    72 

    73 protected: // from TMIDFormatConverter

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

    75     TBool CheckSize(TInt aPixelSize, TInt aLastDrawnPixelOffset);

    76 

    77 private:

    78 

    79     TUint8* iBitmap;

    80 };

    81 

    82 #endif // TMIDGRAY1_H