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/*
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* Copyright (c) 2004,2005 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: SVGT Thumbnail Utility Class implements the thumbnail
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* used to display SVGT content.
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*
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*/
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#ifndef __SVGTTHUMBNAILUTIL_H__
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#define __SVGTTHUMBNAILUTIL_H__
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// INCLUDES
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#include <SVGRequestObserver.h>
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// FUNCTION PROTOTYPES
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// FORWARD DECLARATIONS
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class CSvgEngineInterfaceImpl;
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class CFbsBitmap;
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// CLASS DECLARATION
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/**
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* CSVGTThumbnailUtil is a utility class used to generate thumbnails.
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* It is used through dialog provided by CSVGTUIDialog.
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*
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* @lib SVGTUIControl.lib
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* @since 3.0
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*/
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class CSVGTThumbnailUtil : public CBase,
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public MSvgRequestObserver
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{
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public: // Constructors and destructor
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/**
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* Generate thumbnails for SVGT content.
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* @since 3.0
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* @param aFileHandle File Handle to the SVGT file.
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* @param aThumbnailBitmap Bitmap - Client provided bitmap to render
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* the SVGT contents opening screen.
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* @param aThumbnailBitmap Bitmap - Client provided bitmap mask.
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* @return Boolean ETrue indicates thumbnail generated successfully,
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* EFalse otherwise.
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*/
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IMPORT_C static TBool GenerateThumbnailLD( RFile& aFileHandle,
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CFbsBitmap& aThumbnailBitmap,
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CFbsBitmap& aThumbnailBitmapMask );
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public: // New functions
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public: // Functions from base classes
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/**
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* This function is called to initialize the SVGT-Engine interface.
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* @since 3.0
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*/
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void InitializeEngineL();
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/**
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* Generates Thumbnail of initial screen of SVG content.
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* @since 3.0
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* @return Boolean ETrue indicates thumbnail generated successfully,
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* EFalse otherwise.
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*/
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TBool GenerateThumbnail();
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protected: // Functions from base classes
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/**
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* From MSvgRequestObserver Method called by SVG Engine
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* after it has rendered a frame.
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* @since 3.0
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*/
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void UpdateScreen();
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/**
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* From MSvgRequestObserver This method is for future extension,
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* in which an external script engine could be used to evaluate
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* a script description.
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* @since 3.0
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* @param aScript Descriptor containing script
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* @param aCallerElement SVG Element that calls the script by a
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* an event of the "on" attribute.
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* @return TBool.
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*/
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TBool ScriptCall( const TDesC& aScript,
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CSvgElementImpl* aCallerElement );
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/**
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* From MSvgRequestObserver This method is called by the SVG engine
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* to retrieve the absolute path of the image file.
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* @since 3.0
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* @param aUri Descriptor containing the relative path of the image.
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* @param aFilePath Descriptor which contains absolute path that is
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* to be used by the Engine to retrieve the image.
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* @return TBool -
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* ETrue indicates absolute path is present in aFilePath.
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* EFalse otherwise.
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*/
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TInt FetchImage( const TDesC& aUri,
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RFs& aSession, RFile& aFileHandle ) ;
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TInt FetchFont( const TDesC& /* aUri */,
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RFs& /* aSession */, RFile& /* aFileHandle */ );
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/**
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* From MSvgRequestObserver This method is called by the SVG engine
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* to get the SMIL Fit attribute value.
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* @since 3.0
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* @param aSmilValue Descriptor containing the SMIL Fit attribute.
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*/
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void GetSmilFitValue( TDes& aSmilValue );
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/**
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* From MSvgRequestObserver This method is called by the SVG engine
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* to update the presentation status.
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* @since 3.0
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* @param aNoOfAnimation Integer. When called for the first time
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* it indicates total number of animations.
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* Subsequently it contains number of animations that were completed.
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*/
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void UpdatePresentation( const TInt32& aNoOfAnimation );
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private:
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/**
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* C++ default constructor.
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*/
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CSVGTThumbnailUtil( RFile& aFileHandle );
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/**
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* Second Phase constructor.
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* @param aThumbnailBitmap Client provided bitmap to render the SVGT
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* contents opening screen.
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* @param aThumbnailBitmapMask Bitmap - Client provided bitmap for SVGT
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* bitmap mask.
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*/
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void ConstructL( CFbsBitmap& aThumbnailBitmap,
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CFbsBitmap& aThumbnailBitmapMask );
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/**
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* Two-phased constructor for thumbnail creation.
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* @since 3.0
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* @param aFileHandle file handle to the SVGT file.
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* @param aThumbnailBitmap Bitmap - Client provided bitmap to render
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* the SVGT contents opening screen.
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* @param aThumbnailBitmapMask Bitmap - Client provided bitmap for SVGT
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* bitmap mask.
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* @return CSVGTThumbnailUtil*
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*/
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static CSVGTThumbnailUtil* NewL( RFile& aFileHandle,
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CFbsBitmap& aThumbnailBitmap,
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CFbsBitmap& aThumbnailBitmapMask );
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/**
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* Two-phased constructor for thumbnail creation that pushes the
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* object on the cleanup stack.
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* @since 3.0
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* @param aFileHandle file handle to the SVGT file.
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* @param aThumbnailBitmap Client provided bitmap to render the SVGT
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* contents opening screen.
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* @param aThumbnailBitmapMask Bitmap - Client provided bitmap for SVGT
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* bitmap mask.
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* @return CSVGTThumbnailUtil*
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*/
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static CSVGTThumbnailUtil* NewLC( RFile& aFileHandle,
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CFbsBitmap& aThumbnailBitmap,
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CFbsBitmap& aThumbnailBitmapMask );
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/**
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* Destructor.
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*/
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virtual ~CSVGTThumbnailUtil();
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private: // Data
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// Dummy Bitmap used by SVG Engine to render content.
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CFbsBitmap* iSVGTBitMapDummy;
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// SVG Engine Interface Implementation pointer
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CSvgEngineInterfaceImpl* iSvgModule;
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// Thumbnail bitmap used by SVG Engine to render content.
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CFbsBitmap* iThumbnailBitmap;
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// Thumbnail bitmap mask used by SVG Engine to render content mask.
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CFbsBitmap* iThumbnailBitmapMask;
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// SVG Thumbnail Handle
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TInt iThumbnailHandle;
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// SVGT content filename descriptor
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RFile& iContentFileHandle;
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};
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#endif // __SVGTTHUMBNAILUTIL_H__
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// End of File
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