1 /*

     2 * Copyright (c) 2005 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 

    19 #ifndef LCDFBSIMAGECACHE_H

    20 #define LCDFBSIMAGECACHE_H

    21 

    22 #include <e32base.h>

    23 #include <gdi.h>

    24 #include <fbs.h>

    25 #include <lcdgr.h>

    26 #include <lcdgdrv.h>

    27 #include "LcdFbsImage.h"

    28 

    29 struct TLcdFbsImageEntry

    30 {

    31     MMIDImage*       iImage;

    32     TBool            iPrimary;

    33     TDisplayMode     iColorMode;

    34     TDisplayMode     iAlphaMode;

    35     TBool            iInvertMask;

    36     MMIDBitmapImage* iBitmapRep;

    37 };

    38 

    39 /**

    40  *

    41  */

    42 NONSHARABLE_CLASS(CLcdFbsImageCache) : public CBase

    43 {

    44 public:

    45     static CLcdFbsImageCache* NewL(CLcdGraphicsDriver& aDriver, TDisplayMode aDefaultColorMode, TDisplayMode aDefaultAlphaMode, TBool aDefaultInverted);

    46     CLcdFbsImageCache(CLcdGraphicsDriver& aDriver);

    47     ~CLcdFbsImageCache();

    48 

    49 

    50     /**

    51      * Find the primary bitmap image representation of aImage.

    52      *

    53      *@return a bitmap image or NULL if no appropriate bitmap representation of aImage exists.

    54      */

    55     MMIDBitmapImage* GetBitmapImage(MMIDImage* aImage);

    56 

    57     /**

    58      * Find a bitmap image representation of aImage with color bitmap in displaymode aColorMode, and alpha

    59      * bitmap (if present) in displaymode aAlphaMode. If aColorMode or aAlphaMode are equal to

    60      * MMIDBitmapImage::EDefaultDisplayMode, then the implementation will select a mode based on the image

    61      * pixel format.

    62      *

    63      *@return a bitmap image or NULL if no appropriate bitmap representation of aImage exists.

    64      */

    65     MMIDBitmapImage* GetBitmapImage

    66     (

    67         MMIDImage* aImage,

    68         TInt aColorMode,

    69         TInt aAlphaMode,

    70         TBool aInvertMask

    71     );

    72 

    73     /**

    74      * Find or create a bitmap image representation of aImage with a color bitmap in displaymode aColorMode and

    75      * alpha bitmap (if present) in displaymode  aAlphaMode.

    76      *

    77      *@return a bitmap image representation.

    78      *

    79      * Will leave with one of the system error codes if a bitmap representation does not exist and one cannot

    80      * be created.

    81      */

    82     MMIDBitmapImage* GetBitmapImageL

    83     (

    84         MMIDImage* aImage,

    85         TInt aColorMode=MMIDBitmapImage::EDefaultDisplayMode,

    86         TInt aAlphaMode=MMIDBitmapImage::EDefaultDisplayMode,

    87         TBool aInvertMask=EFalse

    88     );

    89 

    90     void RegisterL(MMIDImage* aImage, TBool aInverted, MMIDBitmapImage* aImageRep);

    91     void Purge(MMIDImage* aImage);

    92 

    93 private:

    94     MMIDBitmapImage* CreateBitmapImageRepLC(MMIDImage& aImage, TDisplayMode aColorMode, TDisplayMode aAlphaMode, TBool aInvertMask);

    95     void RemoveEntry(TInt);

    96 

    97 private:

    98     CLcdGraphicsDriver& iDriver;

    99     TDisplayMode iDefaultColorMode;

   100     TDisplayMode iDefaultAlphaMode;

   101     TBool iDefaultInverted;

   102     RArray<TLcdFbsImageEntry>       iEntries;

   103     TLinearOrder<TLcdFbsImageEntry> iOrder;

   104 };

   105 

   106 #endif // LCDFBSIMAGECACHE_H