author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Mon, 21 Jun 2010 16:41:52 +0300 | |
branch | RCL_3 |
changeset 41 | cd0ae4656946 |
parent 7 | 433cbbb6a04b |
child 63 | e1987ab3768a |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2006-2008 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: Defines CHuiVg10Texture, an OpenVG-based texture class. |
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* |
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*/ |
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#ifndef __HUIVG10TEXTURE_H__ |
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#define __HUIVG10TEXTURE_H__ |
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#include <bldvariant.hrh> |
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#include <e32base.h> |
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#include <e32std.h> |
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#include <gdi.h> |
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#include <VG/openvg.h> |
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#include "uiacceltk/HuiTexture.h" |
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#include "uiacceltk/HuiTextureHandle.h" |
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#include "HuiVg10RenderPlugin.h" |
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struct THuiTexturePartialBitmapUploadParams; |
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#ifdef __NVG |
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#include <AknIconHeader.h> |
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class CNvgEngine; |
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class MNVGIcon; |
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#endif |
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/** |
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* CHuiVg10Texture wraps an OpenVG texture object. It provides methods |
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* for uploading image data. When an instance of CHuiVg10Texture is |
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* destroyed, the OpenVG texture object is deleted as well. |
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* |
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* @todo Proper segment support. Support more than two segments. |
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* @todo Placeholder should be a THuiTextureHandle. |
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*/ |
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NONSHARABLE_CLASS(CHuiVg10Texture) : public CHuiTexture |
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{ |
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public: |
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/* Constructors and destructor. */ |
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/** |
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* Constructs a new texture object. The texture has no segments initially. |
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* |
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* @param aRenderPlugin The render plugin that created this texture. |
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* @return Texture object. |
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*/ |
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static CHuiVg10Texture* NewL(CHuiVg10RenderPlugin& aRenderPlugin, const THuiTextureHandle* aExistingTexture = 0); |
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/** |
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* Constructs a new texture object and leaves it on the cleanup stack. |
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* The texture has no segments initially. |
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* |
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* @param aRenderPlugin The render plugin that created this texture. |
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* @return Texture object. |
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*/ |
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static CHuiVg10Texture* NewLC(CHuiVg10RenderPlugin& aRenderPlugin, const THuiTextureHandle* aExistingTexture = 0); |
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/** @beginAPI */ |
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/** |
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* Destructor. |
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*/ |
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virtual ~CHuiVg10Texture(); |
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/* Methods. */ |
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TBool HasContent() const; // override |
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/** |
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* Determines if the texture has an alpha channel. |
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* |
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* @return <code>ETrue</code>, if the texture has an alpha channel. |
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* Otherwise, <code>EFalse</code>. |
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*/ |
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TBool HasAlpha() const; |
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/** |
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* Determines the maximum possible actual (OpenVG) size for |
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* textures. This limit is usually set by the underlying |
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* graphics driver/hardware. |
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* @todo should be moved out? |
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*/ |
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TSize MaxTextureSize() const; |
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void UploadL(const CFbsBitmap& aBitmap, |
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const CFbsBitmap * aMaskBitmap = NULL, |
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THuiTextureUploadFlags aFlags = EHuiTextureUploadFlagDefault); |
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void UploadL(THuiTextureFormat aFormat, |
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const TSize& aSize, |
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const TUint8* aBuffer, |
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THuiTextureUploadFlags aFlags = EHuiTextureUploadFlagDefault, |
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TUint aBufferSize = 0); |
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void PartialUploadL(THuiTextureFormat aFormat, |
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const TPoint& aOrigin, |
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const TSize& aSize, |
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const TUint8* aBuffer); |
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void SegmentUploadL(TInt aSegment, |
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const CFbsBitmap& aBitmap, |
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const CFbsBitmap * aMaskBitmap = NULL, |
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THuiTextureUploadFlags aFlags = EHuiTextureUploadFlagDefault); |
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void SegmentUploadL(TInt aSegment, |
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THuiTextureFormat aFormat, |
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const TSize& aSize, |
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const TUint8* aBuffer, |
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TUint aBufferSize = 0); |
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void SegmentPartialUpload(TInt aSegment, |
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THuiTextureFormat aFormat, |
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const TPoint& aOrigin, |
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const TSize& aSize, |
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const TUint8* aBuffer); |
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void SegmentClearL(TInt aSegment, |
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TBool aWithAlpha, |
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const TRgb& aColor, |
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TUint8 aAlpha); |
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void SetupSegmentsL(const TSize& aLogicalSize, |
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const TSize& aTextureSize, |
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THuiTextureUploadFlags aFlags = EHuiTextureUploadFlagDefault); |
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/** @endAPI */ |
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/** |
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* Delete the texture. |
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*/ |
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void Reset(); |
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void EnableShadow(TBool aEnable = ETrue); |
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TBool IsShadowEnabled() const; |
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TBool GetShadowTexture(THuiTextureHandle& aHandle) const; |
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#ifdef __NVG |
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/** |
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* Creates a normal texture with the VGImage from extended texture |
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* |
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* @param aNvgEngine Used to draw the extended bitmap data on the VGImage, if ObjectCached icon wasn't found |
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* @param aDestSize Destination size for the VGImage |
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* @return Handle to the rasterized image or <code>VG_INVALID_HANDLE</code> if something went wrong. |
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*/ |
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VGImage CreateRenderedImage(CNvgEngine* aNvgEngine, HBufC8* aNVGData, const TSize& aDestSize, TInt64 aSerialNumber = 0); |
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/** |
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* Identifies whether this texture contains extended texture data |
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*/ |
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TBool IsExtended() const; |
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/** |
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* Gets the extended texture data. Prefer the GetIconCommandsData() instead. |
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* |
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* @return The OpenVG command buffer for the texture |
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*/ |
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HBufC8* GetExtendedTextureData() const; |
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/** |
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* Gets the VG ObjectCached NVG icon, which can be drawn directly by calling the DrawL() method |
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* |
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* @return The OpenVG Object Cached NVG icon |
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*/ |
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MNVGIcon* GetIconCommandsData() const; |
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#endif |
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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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CHuiVg10Texture(CHuiVg10RenderPlugin& aRenderPlugin); |
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/** |
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* Second-phase constructor. |
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* @param aRenderPlugin The render plugin that created this texture. |
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*/ |
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void ConstructL(const THuiTextureHandle* aExistingTexture); |
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/* Methods. */ |
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/** |
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* Deallocate resources associated with segment. Will free |
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* all resources associated with a texture segment. |
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* @see SetSegmentCount() |
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*/ |
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virtual void ResetSegment(TInt aSegment); |
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/** |
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* Initialize segment for holding texture data. Allocate texture name etc. |
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*/ |
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virtual void InitSegmentL(TInt aSegment); |
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// from MHuiTexture |
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void TextureExtension(const TUid& aExtensionUid, TAny** aExtensionParameters); |
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private: |
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/** |
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* Define the contents of an image using raw data. |
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* |
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* @param aCreateImage If ETrue, a new image is created, otherwise an existing image is updated. |
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* |
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* @see SegmentPartialUpload |
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*/ |
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void SegmentPartialUploadInternal(TInt aSegment, THuiTextureFormat aFormat, const TPoint& aOrigin, |
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const TSize& aSize, const TUint8* aBuffer, TBool aCreateImage); |
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/** |
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* Generate a shadow for this texture if shadowing is enabled. |
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*/ |
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void GenerateShadowL(); |
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/** |
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* Make sure the shadow texture is of the proper dimensions. |
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*/ |
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void UpdateShadowSizeL(const TSize& aSize); |
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/** |
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* Partial bitmap upload. |
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*/ |
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void PartialBitmapUpload(THuiTexturePartialBitmapUploadParams* aParams); |
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/** The render plugin that created this texture. */ |
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CHuiVg10RenderPlugin& iRenderPlugin; |
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/** Flags indicating the state of the image object */ |
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TInt iInternalFlags; |
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/** Shadow texture */ |
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THuiTextureHandle iShadow; |
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/** Should a shadow texture be generated */ |
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TBool iShadowEnabled; |
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#ifdef __NVG |
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/** |
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* Reads the NVG data from the extended CFbsBitmap |
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* |
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* @param aBitmap The extended bitmap, which carries the NVG data to be read |
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* @return The read NVG data in a 8-bit descriptor |
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*/ |
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HBufC8* ReadNVGDataL(const CFbsBitmap& aBitmap); |
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/** |
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* Compares two NVG data buffers. Ignores the iconheader part. |
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*/ |
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TInt CompareNvgData(HBufC8* aNVGData1, HBufC8* aNVGData2); |
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/** |
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* Uploads the NVG data into the texture. |
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* |
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* @param aBitmap The bitmap that is to be uploaded. Includes the extended NVG data. |
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* @param aFlags Texture upload flags, either EHuiTextureUploadFlagUsePureNvg => upload as object cached NVG. Otherwise will be rasterized into VGImage. |
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*/ |
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void SegmentUploadNvgL(const CFbsBitmap& aBitmap, const CFbsBitmap* aMaskBitmap, THuiTextureUploadFlags aFlags); |
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/** |
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* Create the Object cached icon out of the NVG data. Does the parsing of the icon header as well. |
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*/ |
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void CreateObjCachedNVGIconL(); |
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/** |
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* Parses the NVG icon header out of the NVG data. |
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* |
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* @param aNVGData The NVG formatted data, from which to parse the icon header |
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* @return The iconheader information |
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*/ |
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TAknIconHeader GetNvgIconHeader(HBufC8* aNVGData); |
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/** |
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* This method has to be called before calling nvgEngine->DrawNvg(). |
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* |
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* @param aNVGData Nvg data buffer |
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* @return Descriptor to the NVG data without the additional header information. |
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*/ |
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TPtr8 GetNvgDataWithoutHeader(HBufC8* aNVGData); |
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/** |
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* Sets the NVG icon aspect ratio and rotation (from the NVG icon header). |
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* |
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* @param aNvgEngine NvgEngine instance used for setting the aspect ratio. |
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* @param aNVGData Nvg data buffer |
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* @param aIgnoreAspectRatio Use this, if you want to set the rotation, but ignore the aspect ratio. |
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*/ |
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void SetNvgParamsFromIconHeader(CNvgEngine& aNvgEngine, HBufC8* aNVGData); |
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/** |
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* Calculates new iconsize that will have at least the required 12% margin. |
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* |
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* @param aVgImage Image that has been rasterized from the NvgData, used for determining if there's enough margin or not |
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* @param aSize Size for drawing the image. Used as a base for margin calculations. |
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* @param aDisplay EGLDisplay, needed for making the VGImage based ClientPBuffer current again. |
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* @param aSurface EGLSurface, -||- |
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* @param aContext EGLContext, -||- |
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* @return New size with the correct margin. |
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*/ |
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TSize ApplyMargin(VGImage aVgImage, TSize aSize, EGLDisplay aDisplay, EGLSurface aSurface, EGLContext aContext); |
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/** |
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* Sets the color for the icon, if such is defined in the icon header. |
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* |
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* @param aSrcImage Image that has been rasterized from the NvgData, used as a source for the color transformation. |
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* Will be replaced by the new image got from transformation. |
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* @param aSize Size for creating destination image. |
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* @param aColor Color from the iconheader, used to fill the icon with it. |
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*/ |
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void SetIconColor(VGImage& aSrcImage, TSize aSize, TUint32 aColor); |
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/** |
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* Replaces the alpha channel information within aImage, with the alpha mask |
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* information from the aMaskImage. Both images have to be in VG_sARGB_8888 format. |
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* |
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* @param aImage VGImage, which's alpha channel is to be replaced. |
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* @param aMaskImage a mask VGImage. |
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* @param aSize Size of the images. |
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*/ |
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void ReplaceVGImageAlphaChannelL(VGImage aImage, VGImage aMaskImage, TSize aSize); |
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|
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/* |
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* Assertains that all texture uploads are done into the same EGL context as the first upload. |
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* Changes context if necessary. |
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*/ |
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void PushEGLContext(); |
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/* |
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* Rolls back to the previous EGL context, if necessary. |
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*/ |
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void PopEGLContext(); |
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// Rolling back to state for PopEGLContext |
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TEGLState iPreviousEGLState; |
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/** Identifies whether this texture has extended bitmap NVG data **/ |
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TBool iIsExtended; |
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/** Carries the extended NVG data, if any **/ |
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HBufC8* iNVGData; |
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/** |
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* Stores the ObjectCached VG commands, which are ready to be drawn without |
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* the need to parse the NVG data and create the VG objects again |
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*/ |
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MNVGIcon* iIconCommands; |
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#endif |
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}; |
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#endif // __HUIVG10TEXTURE_H__ |