author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Mon, 22 Feb 2010 17:57:49 +0200 | |
branch | RCL_3 |
changeset 3 | d8a3531bc6b8 |
parent 0 | 15bf7259bb7c |
child 57 | eaa079afe64c |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) Nokia Corporation and/or its subsidiary(-ies). |
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* All rights reserved. |
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* This component and the accompanying materials are made available |
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* under the terms of "Eclipse Public License v1.0" |
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* which accompanies this distribution, and is available |
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* at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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* |
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* Initial Contributors: |
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* Nokia Corporation - initial contribution. |
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* |
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* Contributors: |
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* |
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* Description: Declares CAlfTexture texture class. |
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* |
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*/ |
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#ifndef C_ALFTEXTURE_H |
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#define C_ALFTEXTURE_H |
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#include <coemain.h> |
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#include <alf/alftextureautosizeparams.h> |
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class CAlfEnv; |
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class MAlfBitmapProvider; |
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class CAlfTextureManager; |
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/** Flags for texture Uploading. */ |
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enum TAlfTextureFlags |
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{ |
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/** No special actions/behavior needed. */ |
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EAlfTextureFlagDefault = 0, |
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/** |
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* @deprecated This is default functionality |
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*/ |
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EAlfTextureFlagRetainResolution = 1, |
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/** |
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* @deprecated |
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* Automatically generates a shadow for the texture. |
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*/ |
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EAlfTextureFlagGenerateShadow = 2, |
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/** |
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* Use to retain the color depth of the |
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* ((up)loaded) image as well as possible. Otherwise |
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* the toolkit may reduce the color depth of the texture |
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* to conserve memory. |
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*/ |
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EAlfTextureFlagRetainColorDepth = 4, |
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|
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/** |
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* If this flag has been set, texturemanager automatically releases and |
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* restores texture after system skin changes so that it has the |
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* updated content. |
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*/ |
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EAlfTextureFlagSkinContent = 8, |
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|
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/** |
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* Set if it is not necessary to retain the full resolution of the bitmap. |
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* Default functionality is try to match texture resolution |
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* with bitmap resolution). |
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* This may save some memory with hardware acceleration, but image quality changes to worse |
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*/ |
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EAlfTextureFlagDoNotRetainResolution = 0x10, |
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/** |
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* Lets texture manager report preferred texture size via MAlfTexturePreferredSizeObserver |
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* interface and automatically re-request upload from the bitmap provider |
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* (which should be aware of the new size). |
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* |
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* Preferred size is determined by the actual usage of the texture and the size(s) that |
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* texture appears on the display. |
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* |
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* Automatically determined preferred size may not be always the most optimal and |
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* performance may be degraded due multiple (re)uploads if texture usage changes frequently. |
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* |
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* Also it is not quaranteed that texture manager is able to report preferred size in |
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* all possible situations. |
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*/ |
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EAlfTextureFlagAutoSize = 0x40, |
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|
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/* |
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* If defined the texture manager will not try to check whether or not the texture has |
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* multiple frames. This can be used load animated texture's first frame as a simple image |
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* or to reduce the loading time of a texture (e.g. in case of large size images) if the |
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* user knows that the image does not have any frames. |
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*/ |
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EAlfTextureFlagLoadAnimAsImage = 0x80 |
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}; |
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/** |
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* CAlfTexture is the client side class for all texture objects. |
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* |
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* A CAlfTexture always represents one or more fully loaded (OpenGL ES) texture |
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* objects. When drawing something, TAlfImages are used for determining the |
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* area of the texture to draw. However, different segments may utilize |
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* textures in different resolutions. |
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* Usage: |
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* @code |
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* //load texture from Texture Manager |
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* CAlfTexture* tex = iTextureMgr->LoadTexture(imageFileName1, |
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* EAlfTextureFlagDefault, |
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* AUTO_GENERATED_TEXTURE_ID); |
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* |
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* //Use texture to create Image instance |
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* TAlfImage image( *tex ); |
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* |
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* //For textures, which should never be released, set priority to be 0 |
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* //see CAlfEnv::Release() |
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* tex->SetPriority(0); |
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* |
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* //cleanup |
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* delete env; // delete texturemanager and all the textures. |
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* |
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* @endcode |
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* @see CAlfTextureManager |
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* @see TAlfImage |
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* @lib alfclient.dll |
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* @since S60 v3.2 |
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*/ |
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|
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NONSHARABLE_CLASS( CAlfTexture ): public CBase |
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{ |
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public: |
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|
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/* Constructors and destructor. */ |
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|
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/** |
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* Destructor. |
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*/ |
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IMPORT_C virtual ~CAlfTexture(); |
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|
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/** |
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* Static factory method. Creates a texture appropriate for the current |
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* renderer. |
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*/ |
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static CAlfTexture* NewL(CAlfEnv& aEnv, TUid aManagerUid, |
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TInt aId = 0, TInt aBitmapHandle = 0, TInt aMaskHandle = 0, |
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TAlfTextureFlags aFlags = EAlfTextureFlagDefault, |
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TBool aAnimated = EFalse ); |
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|
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/** |
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* Static factory method. Creates a texture appropriate for the current |
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* renderer. |
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*/ |
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static CAlfTexture* NewLC(CAlfEnv& aEnv, TUid aManagerUid, |
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TInt aId = 0, TInt aBitmapHandle = 0, TInt aMaskHandle = 0, |
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TAlfTextureFlags aFlags = EAlfTextureFlagDefault, |
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TBool aAnimated = EFalse); |
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|
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/** |
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* Sets server side handle. |
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* @param aHandle Serverside handle |
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*/ |
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void SetServerHandle(TInt aHandle); |
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|
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/** |
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* Sets bitmap provider. |
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* @param bitmap provider. |
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*/ |
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void SetBitmapProvider(MAlfBitmapProvider* aBitmapProvider); |
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|
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/** |
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* Gets bitmap provider. |
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* @return bitmap provider. |
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*/ |
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MAlfBitmapProvider* BitmapProvider() const; |
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|
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/** |
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* Sets filename. |
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* @param file name. |
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*/ |
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void SetFileNameL(const TFileName & aFileName); |
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|
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/** |
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* Sets max texture size. |
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* @param max texture size. |
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*/ |
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void SetMaxTextureSize(TSize aTextureMaxSize); |
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|
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/** |
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* Gets texture flags. |
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* @return Texture flags. |
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*/ |
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TAlfTextureFlags Flags() const; |
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|
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/** |
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* Sets texture flags. |
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* @param Texture flags. |
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*/ |
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void SetFlags(TAlfTextureFlags aFlags); |
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|
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/** |
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* Sets texture logical size. |
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* @param logical texture size. |
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*/ |
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void SetSize(TSize aSize); |
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/** @beginAPI */ |
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/** |
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* Gets texture id. |
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* @return Texture id. |
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*/ |
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IMPORT_C TInt Id() const; |
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/** |
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* Gets server side handle. |
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* @return Serverside handle |
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*/ |
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IMPORT_C TInt ServerHandle() const; |
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/** |
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* Gets filename. |
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* @param file name. |
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*/ |
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IMPORT_C HBufC* FileName() const; |
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/** |
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* Returns ETrue if the texture has content - existing texture |
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* data. This indicates that the texture has been (up)loaded |
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* and is ready to be used. |
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*/ |
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IMPORT_C TBool HasContent() const; |
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/** |
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* Gets max texture size. |
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* @return max texture size. |
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*/ |
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IMPORT_C TSize MaxTextureSize(); |
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/** |
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* Gets texture logical size. |
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* @return logical texture size. |
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*/ |
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IMPORT_C TSize Size() const; |
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/** |
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* Returns ETrue if the texture is animated, |
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* EFalse otherwise |
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* @return the animation status of the texture. |
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*/ |
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IMPORT_C TBool IsAnimated() const; |
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/** |
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* Starts the animation if the texture is animated. |
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* Does nothing if the texture is not animated, or |
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* the animation has already been started |
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*/ |
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IMPORT_C void StartAnimation(); |
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/** |
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* Stops the animation if the texture is animated. |
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* Does nothing if the texture is not animated, or |
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* the animation has already been stopped |
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*/ |
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IMPORT_C void StopAnimation(); |
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/** |
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* Sets the texture priority. The priority is used when releasing/restoring |
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* textures. |
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* |
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* @param aPriority 0 = never release |
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* See TAlfTexturePriority from |
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* alftexturemanager.h |
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* By default != 0 |
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*/ |
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IMPORT_C void SetPriority( TInt aPriority ); |
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/** |
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* Returns the priority of the texture |
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* |
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* @return The priority |
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* |
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* @see SetPriority() |
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*/ |
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IMPORT_C TInt Priority() const; |
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|
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/** |
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* Sets parameters to be used when automatically calculating preferred size. |
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* @param aParams New parameters. |
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*/ |
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IMPORT_C void SetAutoSizeParams(const TAlfTextureAutoSizeParams& aParams); |
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/** |
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* Gets parameters to be used when automatically calculating preferred size. |
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* @return Currently used parameters. |
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*/ |
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IMPORT_C TAlfTextureAutoSizeParams AutoSizeParams() const; |
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|
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/** |
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* Enables texture reference counting. If enabled,the user |
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* does not need to delete or unload the texture, but can leave |
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* the responsibility for the toolkit. Needs to be enabled per texture. Allows |
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* keeping important textures in memory if disabled. Even if |
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* the refcounting is disabled, internally bookkeeping is still |
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* made in order to correctly free unused textures when |
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* refcounting is enabled again. |
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* |
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* The whole feature is disabled by default and needs to be enabled |
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* when necessary. |
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* |
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* Action that will be taken when ref count reaches zero |
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* can be defined using SetRefCountingAction method, by default |
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* it is ERefCountingActionUnload. |
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* |
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* @param aEnable if ETrue, reference counting is enabled. |
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*/ |
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IMPORT_C void EnableRefCounting(TBool aEnable=ETrue); |
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|
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/** |
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* Queries the reference counting state |
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* |
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* @return ETrue if texture is refcounted, EFalse otherwise. |
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*/ |
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IMPORT_C TBool RefCountingEnabled(); |
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enum TAlfTextureRefCountingAction |
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{ |
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ERefCountingActionDelete, |
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ERefCountingActionUnload |
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}; |
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/** |
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* Sets action that is performed when reference counting reaches zero. |
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* @param aAction Possible values are ERefCountingActionDelete and |
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* ERefCountingActionUnload but in the future there may be new ones. |
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* |
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*/ |
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IMPORT_C void SetRefCountingAction(TInt aAction); |
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/** |
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* Gets action that is performed when reference counting reaches zero. |
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* @return Possible values are ERefCountingActionDelete and |
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* ERefCountingActionUnload but in the future there may be new ones. |
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*/ |
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IMPORT_C TInt RefCountingAction() const; |
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/** @endAPI */ |
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enum TAlfTextureReleaseFlags |
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{ |
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EReleaseNone = 0x0, |
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EReleaseFromEnv = 0x1, |
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EReleaseFromRefCounting = 0x2, |
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EReleaseFromUnload = 0x4 |
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}; |
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/** |
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* Returns the flags which tell if texture has been released. |
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* @return Release flags |
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*/ |
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TInt ReleaseFlags() const; |
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/** |
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* Sets the flags which tell if texture has been released. |
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* @param aReleased EReleaseNone when it is restored, others when texture gets released. |
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*/ |
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void SetReleaseFlags(TInt aReleaseFlags); |
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/** |
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* Gets the texturemanager instance which manages this texture. |
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* @return Texture manager for this texture. |
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*/ |
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CAlfTextureManager* TextureManager(); |
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protected: |
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/* Constructors. */ |
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/** |
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* Constructor. Creates a new texture object with no texture maps. |
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*/ |
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CAlfTexture(); |
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/** |
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* Second-phase constructor. |
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*/ |
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void ConstructL(CAlfEnv& aEnv, TUid aManagerUid, TInt aId, TInt aBitmapHandle, TInt aMaskHandle, TAlfTextureFlags aFlags, TBool aAnimated); |
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private: |
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/** Private data */ |
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struct TPrivateData; |
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TPrivateData* iData; |
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}; |
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#endif // C_ALFTEXTURE_H |