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:   Defines CHuiAnimatedTexture base class, which can be used as 

    15 *                a base class for application-specific animated textures.

    16 *

    17 */

    18 

    19 

    20 

    21 #ifndef __HUIANIMATEDTEXTURE_H__

    22 #define __HUIANIMATEDTEXTURE_H__

    23 

    24 

    25 #include <uiacceltk/HuiTexture.h>

    26 #include <uiacceltk/HuiTimeObserver.h>

    27 

    28 

    29 /* Forward declarations. */

    30 class CHuiTextureManager;

    31 

    32 

    33 /**

    34  * Animated textures are informed of the progress of time. Before a display

    35  * refresh occurs, the texture manager will tell all animated textures to

    36  * update themselves.

    37  *

    38  * CHuiAnimatedTexture can be used as a base class for application-specific

    39  * animated texture classes.

    40  */

    41 class CHuiAnimatedTexture : public CBase,

    42                             public MHuiTexture,

    43                             public MHuiSegmentedTexture,

    44                             public MHuiTimeObserver

    45     {

    46 public:

    47 

    48     /**

    49      * Destructor.

    50      */

    51     IMPORT_C ~CHuiAnimatedTexture();

    52 

    53 

    54 public: // new methods

    55 

    56     /**

    57      * Returns the texture object associated with this animated texture.

    58      */

    59     IMPORT_C CHuiTexture& Texture();

    60 

    61     /**

    62      * Called to update the texture when time progresses.

    63      */

    64     virtual void AdvanceTime(TReal32 aElapsedTime) __SOFTFP = 0;

    65 

    66 

    67 public: // from MHuiTexture

    68 

    69     IMPORT_C MHuiSegmentedTexture* SegmentedTexture();

    70 

    71     IMPORT_C const MHuiSegmentedTexture* SegmentedTexture() const;

    72     

    73     IMPORT_C MHuiShadowedTexture* ShadowedTexture();

    74     

    75     IMPORT_C const MHuiShadowedTexture* ShadowedTexture() const;

    76 

    77     IMPORT_C TBool HasContent() const;

    78 

    79 

    80 public: //  MHuiSegmentedTexture

    81 

    82     IMPORT_C TSize Size() const;

    83     

    84     IMPORT_C TInt SegmentCount() const;

    85     

    86     IMPORT_C TUint SegmentName(TInt aSegment) const;

    87     

    88     IMPORT_C TSize SegmentSize(TInt aSegment) const;

    89     

    90     IMPORT_C TSize SegmentTextureSize(TInt aSegment) const;

    91     

    92     IMPORT_C TPoint SegmentOffset(TInt aSegment) const;

    93     

    94 	IMPORT_C TBool TextureChanged() const;

    95 

    96 	IMPORT_C void TextureClearChanged() const;    

    97 

    98 protected:

    99 

   100     /**

   101      * Default constructor.

   102      */

   103     IMPORT_C CHuiAnimatedTexture(CHuiTextureManager& aManager);

   104 

   105     /**

   106      * Second-phase constructor.

   107      */

   108     IMPORT_C void BaseConstructL();

   109     

   110 protected: // from MHuiTexture

   111     

   112     IMPORT_C void TextureExtension(const TUid& aExtensionUid, TAny** aExtensionParameters);

   113 

   114 protected:

   115 

   116     /** Texture manager who owns this texture. */

   117     CHuiTextureManager& iManager;

   118 

   119     /** Contents of the animated texture. */

   120     CHuiTexture* iTexture;

   121 private:

   122     TAny* iSpare;

   123     };

   124 

   125 

   126 #endif // __HUIANIMATEDTEXTURE_H__