--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/svgtviewer/SvgtViewerPlugin/SVGCodecSrc/SVGCodec.cpp Wed Sep 01 12:29:59 2010 +0100
@@ -0,0 +1,967 @@
+/*
+* Copyright (c) 2005 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description: This file implements the read codec for the SVG presentation
+*
+*/
+
+
+#include "SVGCodec.h"
+
+// INCLUDE FILES
+#include <uri16.h>
+#include <coeutils.h>
+#include <SVGEngineInterfaceImpl.h>
+#include <gdi.h>
+#include <pathconfiguration.hrh>
+// User Includes
+#include <SVGTUIControlDbgFlags.hrh>
+#include <imcvcodc.h>
+#include <utf.h>
+
+#ifdef RD_MULTIPLE_DRIVE
+#include <pathinfo.h>
+#include <driveinfo.h>
+#endif
+
+// General Constants
+const TInt KSccConstZero = 0;
+const TUint KSccBackground = 0xffffffff;
+// SMIL Fit Value
+_LIT( KSccSmilFitValue,"meet" );
+
+//
+_LIT( KWww, "www" );
+_LIT( KHttp, "http://");
+_LIT( KDotDot, ".." );
+_LIT( KBSlashStr, "/" );
+_LIT( KSlashStr, "\\" );
+_LIT( KDotSlashStr, ".\\" );
+_LIT( KColonStr, ":" );
+
+_LIT(KJpg, ".jpg" );
+_LIT(KJpeg, ".jpeg" );
+_LIT(KPng, ".png" );
+_LIT(KBmp, ".bmp" );
+_LIT(KSvg, ".svg" );
+_LIT(KSvgz, ".svgz" );
+//
+
+enum TSVGCodecPanic
+ {
+ ECouldNotGenerateThumbnail
+ };
+
+// ============================ MEMBER FUNCTIONS ===============================
+
+// -----------------------------------------------------------------------------
+// CSvgReadCodec::CSvgReadCodec
+// Default constructor.
+// -----------------------------------------------------------------------------
+//
+CSvgReadCodec::CSvgReadCodec( const TSize& aSize ): iImagesPresent(EFalse),
+ iImagesLoaded (EFalse),
+ iOriginalSize(aSize)
+
+ {
+ }
+
+// -----------------------------------------------------------------------------
+// CSvgReadCodec::NewL
+// Static constructor. Returns the pointer to the CSvgReadCodec
+// -----------------------------------------------------------------------------
+//
+CSvgReadCodec* CSvgReadCodec::NewL( const TSize& aSize )
+ {
+ CSvgReadCodec* self = new(ELeave) CSvgReadCodec( aSize );
+ CleanupStack::PushL(self);
+ self->ConstructL();
+ CleanupStack::Pop(self);
+ return self;
+ }
+
+void CSvgReadCodec::ConstructL()
+ {
+ iSvgModule = NULL;
+ iSVGTBitMapDummy = NULL;
+ InitializeEngineL();
+ }
+
+void CSvgReadCodec::InitializeEngineL()
+ {
+ if ( !iSvgModule )
+ {
+ TFontSpec spec;
+
+ if ( !iSVGTBitMapDummy )
+ {
+ // For thumbnails, the user provided bitmap is used,
+ // Have to give some dummy bitmap to the engine in the constructor.
+ iSVGTBitMapDummy = new( ELeave ) CFbsBitmap;
+ User::LeaveIfError(
+ iSVGTBitMapDummy->Create(
+ TSize( KSccConstZero, KSccConstZero ),
+ EGray2 ) );
+ }
+
+ iSvgModule = CSvgEngineInterfaceImpl::NewL( iSVGTBitMapDummy, this, spec );
+// 0xffffffff is the default color.
+ iSvgModule->SetBackgroundColor( KSccBackground );
+ iSvgModule->AddListener(static_cast<MSvgLoadingListener*>(this),
+ ESvgLoadingListener);
+
+ }
+ }
+
+// -----------------------------------------------------------------------------
+// CSvgReadCodec::~CSvgReadCodec
+// Destructor
+// -----------------------------------------------------------------------------
+//
+CSvgReadCodec::~CSvgReadCodec()
+ {
+ DeleteEngine();
+
+ // Dummy bitmap
+ delete iSVGTBitMapDummy;
+
+ // SVG file data
+ delete iFileData;
+ }
+
+// -----------------------------------------------------------------------------
+// CSvgReadCodec::SetFileDataL
+// Sets the SVG presentation data
+// -----------------------------------------------------------------------------
+//
+void CSvgReadCodec::SetFileDataL( const TDesC8& aFileData )
+ {
+ delete iFileData;
+ iFileData = NULL;
+
+ // For files which are in UTF-16 or unicode format the first 2 bytes
+ // will be FF and FE. In UTF-16 and unicode format every single character
+ // is represented by two bytes.
+
+ HBufC8* binaryBuffer=NULL;
+ binaryBuffer = HBufC8::NewL( aFileData.Length() );
+
+ TPtr8 binaryBufferPtr = binaryBuffer->Des();
+ binaryBufferPtr = aFileData;
+
+ TInt hichar = (CEditableText::EReversedByteOrderMark & 0xFF00)>>8;
+ TInt lochar = CEditableText::EReversedByteOrderMark & 0x00FF;
+ TInt bytesPerChar = 1;
+
+ if(binaryBufferPtr[0] == hichar && binaryBufferPtr[1] == lochar)
+ {
+ bytesPerChar = 2;
+
+ HBufC* dataBuffer=NULL;
+ TInt fileSize = aFileData.Length();
+ dataBuffer = HBufC::New(aFileData.Length()/bytesPerChar);
+ if ( !dataBuffer)
+ {
+ //_LIT( KErrorMsg, "Failed to Load Svg Content: Out of memory");
+ delete binaryBuffer;
+ return;
+ }
+
+ TPtr dataBufferPtr = dataBuffer->Des();
+
+ // Skip two bytes and set the pointer to the next location
+ // from where the actual data starts.
+ dataBufferPtr.Set((TUint16*)binaryBufferPtr.Ptr()+1,
+ fileSize/bytesPerChar-1,
+ fileSize/bytesPerChar-1);
+
+ HBufC8* outputBuffer= NULL;
+ outputBuffer=HBufC8::New(fileSize);
+ if(!outputBuffer)
+ {
+ //_LIT( KErrorMsg, "Failed to Load Svg Content: Out of memory");
+ delete dataBuffer;
+ delete binaryBuffer;
+ return ;
+ }
+ TPtr8 outputBufferptr=outputBuffer->Des();
+ CnvUtfConverter::ConvertFromUnicodeToUtf8(
+ outputBufferptr, // Destination
+ dataBufferPtr );
+
+ iFileData = HBufC8::NewL(fileSize);
+ iFileData->Des().Copy(outputBufferptr);
+
+ delete dataBuffer;
+ delete outputBuffer;
+
+ }
+ else
+ {
+ iFileData = HBufC8::NewL(aFileData.Length());
+ iFileData->Des().Copy( aFileData );
+ }
+ delete binaryBuffer;
+ }
+
+// -----------------------------------------------------------------------------
+// CSvgReadCodec::ProcessFrameL
+// Processes the frame data contained in aSrc.
+// -----------------------------------------------------------------------------
+//
+TFrameState CSvgReadCodec::ProcessFrameL(TBufPtr8& aSrc )
+ {
+ aSrc.Shift( 1 );
+ TFrameState lRetVal = EFrameComplete;
+ DoProcessL();
+
+ if(iImagesPresent && !iImagesLoaded)
+ {
+ lRetVal = EFrameIncompleteRepositionRequest;
+ }
+
+ return lRetVal;
+ }
+
+// -----------------------------------------------------------------------------
+// CSvgReadCodec::DoProcessL
+// Processes the SVG presentation file data. Called by ProcessFrameL()
+// -----------------------------------------------------------------------------
+//
+void CSvgReadCodec::DoProcessL()
+ {
+ }
+
+// -----------------------------------------------------------------------------
+// CSvgReadCodec::InitFrameL
+// Processes the SVG presentation file data. Called by ProcessFrameL()
+// -----------------------------------------------------------------------------
+//
+void CSvgReadCodec::InitFrameL(TFrameInfo& /* aFrameInfo*/,
+ CFrameImageData& /*aFrameImageData*/,
+ TBool /*aDisableErrorDiffusion */,
+ CFbsBitmap& aFrame,
+ CFbsBitmap* /* aDestinationMask */ )
+ {
+ GenerateThumbnailL(&aFrame, NULL);
+ }
+
+void CSvgReadCodec::UpdateScreen()
+ {
+ }
+
+TBool CSvgReadCodec::ScriptCall( const TDesC& /*aScript*/, CSvgElementImpl* /*aCallerElement*/ )
+ {
+ return EFalse;
+ }
+
+TInt CSvgReadCodec::FetchImage( const TDesC& aUri, RFs& aSession, RFile& aFileHandle )
+ {
+ TInt errorCode = KErrNotFound;
+ TInt ret = 0;
+ TRAPD(err, ret = IsDownloadNeededL(aUri));
+ if(err==KErrNone)
+ {
+ if( ret == ELocalImageFile)
+ {
+ TFileName fileName;
+
+#ifdef RD_MULTIPLE_DRIVE
+
+// RFs fsSession;
+ HBufC* fullImagesPathBuf = HBufC::New( KMaxPath );
+ if (fullImagesPathBuf)
+ {
+ TPtr fullImagesPathPtr = fullImagesPathBuf->Des();
+ TInt intDrive;
+ DriveInfo::TDriveArray driveArray;
+
+// fsSession.Connect();
+
+ TInt err1=DriveInfo::GetUserVisibleDrives( aSession, driveArray );
+ if(err1==KErrNone)
+ {
+ for(TInt i=0; i < driveArray.Count(); i++)
+ {
+ TChar driveLetter = driveArray.LetterAt(i);
+ TInt err2=RFs::CharToDrive(driveLetter, intDrive);
+ if(err2==KErrNone)
+ {
+ TInt err3=PathInfo::GetRootPath(fullImagesPathPtr, intDrive);
+ if(err3==KErrNone)
+ {
+ fullImagesPathPtr.Append( PathInfo::ImagesPath() );
+ if(GetLocalFile( aUri, fileName, fullImagesPathPtr))
+ {
+ errorCode = aFileHandle.Open( aSession, fileName, EFileShareAny );
+ break;
+ }
+ }
+ }
+ }
+ }
+ }
+ delete fullImagesPathBuf;
+ fullImagesPathBuf=NULL;
+
+// fsSession.Close();
+
+#else
+
+ HBufC* phoneMemImagesPath = GetImagesPath(EPhoneMemory);
+ TPtr ptrphoneMemImagesPath(phoneMemImagesPath->Des());
+ HBufC* memCardImagesPath = GetImagesPath(EMemoryCard);
+ TPtr ptrMemCardImagesPath(memCardImagesPath->Des());
+
+ if(GetLocalFile( aUri, fileName, ptrphoneMemImagesPath))
+ errorCode = aFileHandle.Open( aSession, fileName, EFileShareAny );
+ else if(GetLocalFile( aUri, fileName, ptrMemCardImagesPath))
+ errorCode = aFileHandle.Open( aSession, fileName, EFileShareAny );
+
+ delete memCardImagesPath;
+ delete phoneMemImagesPath;
+#endif
+ }
+ }
+ return errorCode;
+}
+
+TInt CSvgReadCodec::FetchFont( const TDesC& /* aUri */,
+ RFs& /* aSession */, RFile& /* aFileHandle */ )
+ {
+ return KErrNotSupported;
+ }
+
+
+void CSvgReadCodec::GetSmilFitValue( TDes& aSmilValue )
+ {
+ aSmilValue.Copy( KSccSmilFitValue );
+ }
+
+void CSvgReadCodec::UpdatePresentation( const TInt32& /* aNoOfAnimation */ )
+ {
+ }
+
+void CSvgReadCodec::PrepareEngine()
+ {
+ iPrepareDomResult = iSvgModule->PrepareDom( *iFileData, iThumbnailHandle );
+ TInt err = iPrepareDomResult->HasError();
+ iSvgModule->UseDom( iThumbnailHandle, NULL);
+ iContentSize = iSvgModule->GetSvgBoundingBox().Size();
+ if(iContentSize.iHeight < 1)
+ {
+ iContentSize.iHeight = 1;
+ }
+ if(iContentSize.iWidth < 1)
+ {
+ iContentSize.iWidth = 1;
+ }
+ }
+
+TSize CSvgReadCodec::ContentSize() const
+ {
+ return iContentSize;
+ }
+
+void CSvgReadCodec::GenerateThumbnailL(CFbsBitmap* aFrame, CFbsBitmap* /*aFrameMask*/)
+ {
+ if ( iSvgModule )
+ {
+ // NULL is returned, possible out of memory when create error object.
+ User::LeaveIfNull( iPrepareDomResult );
+ User::LeaveIfError(iPrepareDomResult->HasError());
+#ifdef SVGTUICONTROL_DBG_DRM_THUMBNAIL_API_ENABLE
+ iSvgModule->SetThumbNailMode( ETrue ); // Set thumbnail mode On
+#endif // SVGTUICONTROL_DBG_DRM_THUMBNAIL_API_ENABLE
+
+ // Setup the engine to use the DOM
+ MSvgError* pResult = iSvgModule->UseDom( iThumbnailHandle, aFrame );
+ if ( pResult->HasError() && !pResult->IsWarning() )
+ {
+ User::Leave( KErrGeneral );
+ }
+
+ // View Box define for Dom associated frame
+ iSvgModule->ChooseViewBoxIfNotSet(iThumbnailHandle);
+
+ // Setup the frame size as the one obtained from
+ // creator of codec.
+ const TSize frameSize = aFrame->SizeInPixels();
+ // Get the Display mode for bitmap
+ TDisplayMode lFrameDispMode = aFrame->DisplayMode();
+ // Get the Displaymode for mask
+ iSvgModule->InitializeEngine();
+ iSvgModule->RenderFrame( NULL, 0);
+ // render static content as well
+ if ( iFrameList.Count() )
+ {
+ CFbsBitGc* bitmapContext=NULL;
+ CFbsBitmapDevice* bitmapDevice = CFbsBitmapDevice::NewL( aFrame );
+ CleanupStack::PushL( bitmapDevice );
+ User::LeaveIfError( bitmapDevice->CreateContext( bitmapContext ) );
+ CleanupStack::PushL( bitmapContext );
+ bitmapContext->BitBlt( TPoint(0,0),iFrameList[ 0 ] );
+ CleanupStack::PopAndDestroy(2);
+ }
+
+#ifdef SVGTUICONTROL_DBG_DRM_THUMBNAIL_API_ENABLE
+ iSvgModule->SetThumbNailMode( EFalse ); // Set thumbnail mode Off
+#endif // SVGTUICONTROL_DBG_DRM_THUMBNAIL_API_ENABLE
+ }
+ }
+
+// -----------------------------------------------------------------------------
+// CSvgReadCodec::DeleteEngine
+// Deletes the structures associated with the engine
+// viz. The Frame List, Mask List, Delay Interval List,
+// The DOM for the content and the Engine Implementation itself
+// -----------------------------------------------------------------------------
+//
+void CSvgReadCodec::DeleteEngine()
+ {
+ // Cleanup elements in the frame list
+ for ( TInt i = 0; i < iFrameList.Count(); i++ )
+ {
+ delete iFrameList[i];
+ }
+
+ // Cleanup elements in the mask list
+ for ( TInt i = 0; i < iMaskList.Count(); i++ )
+ {
+ delete iMaskList[i];
+ }
+
+ // Cleanup the memory used for storing the pointers/values
+ iFrameList.Reset();
+ iMaskList.Reset();
+ iDelayList.Reset();
+
+ // Close the resources
+ iFrameList.Close();
+ iMaskList.Close();
+ iDelayList.Close();
+
+ // Delete the DOM created for the content
+ //if ( iThumbnailHandle )
+ // {
+ // iSvgModule->DeleteDom( iThumbnailHandle );
+ // iThumbnailHandle = 0;
+ // }
+
+ // Delete the Engine module
+ delete iSvgModule;
+ iSvgModule = NULL;
+ }
+
+CSvgReadCodec::TDownloadNeeded CSvgReadCodec::IsDownloadNeededL( const TDesC& aUri ) const
+ {
+
+ TUriParser UriParser;
+
+ TBuf<KMaxFileName> localUri;
+ // url starts with www so append http://
+ if ( !aUri.Left( 4 ).Compare( KWww ) )
+ {
+ localUri.Append( KHttp );
+ localUri.Append( aUri );
+ User::LeaveIfError( UriParser.Parse( localUri ) );
+ }
+ else
+ {
+ User::LeaveIfError( UriParser.Parse( aUri ) );
+ }
+
+ if ( UriParser.IsPresent( EUriHost ) )
+ {
+ // Extract the Path, filename and extension from the uri
+ TFileName filename = UriParser.Extract( EUriPath );
+ TParsePtrC fileParser( filename );
+
+ if ( fileParser.NamePresent() && fileParser.ExtPresent() )
+ {
+ if ( fileParser.Ext().Compare( KJpg ) == 0 ||
+ fileParser.Ext().Compare( KJpeg ) == 0 ||
+ fileParser.Ext().Compare( KBmp ) == 0 ||
+ fileParser.Ext().Compare( KPng ) == 0 ||
+ fileParser.Ext().Compare( KSvg ) == 0 ||
+ fileParser.Ext().Compare( KSvgz ) == 0 )
+ {
+ // file name and ext present and
+ // it is amy of the supported image types
+ return ERemoteImageFile;
+ }
+ else
+ {
+ //file Extension present but not a supported image ext,
+ //may be some html file
+ return ENotAnImageFile;
+ }
+ }
+ else
+ {
+ //Should be a domain name so return ENotAnImageFile
+ return ENotAnImageFile;
+ }
+ }
+ else
+ {
+ return ELocalImageFile;
+ }
+ }
+
+TBool CSvgReadCodec::GetLocalFile( const TDesC& aUri,
+ TDes& aFileName ,
+ const TDesC& aRefPath ) const
+ {
+ aFileName.Zero();
+ TBuf<KMaxFileName> copyUri = aUri;
+ // Before giving the uri to the file parser,
+ // convert '/' to '\'.
+ TInt pos;
+ while( KErrNotFound != ( pos = copyUri.FindF( KBSlashStr ) ) )
+ {
+ copyUri.Replace(pos,1,KSlashStr );
+ }
+
+ // if the uri starts with ".\" remove ".\"
+ if ( copyUri.Left( 2 ).Compare( KDotSlashStr ) == 0 )
+ {
+ copyUri = copyUri.Right( copyUri.Length() - KDotSlashStr().Length() );
+ }
+
+ // If the second letter is not ':'
+ // and if it is not starting with '\',
+ // and if the path has '/',
+ // then prepend slash to it.
+ if ( copyUri.Length() >= 2 &&
+ copyUri.Mid( 1, 1 ).Compare( KColonStr ) != 0 &&
+ copyUri.Mid( 0, 1 ).Compare( KSlashStr ) != 0 &&
+ ( copyUri.Find( KSlashStr ) != KErrNotFound ) )
+ {
+ copyUri.Insert( 0, KSlashStr );
+ }
+
+ TParse fileParser;
+ if( fileParser.Set( copyUri, NULL, NULL ) != KErrNone )
+ {
+ return EFalse;
+ }
+
+ if ( fileParser.DrivePresent() )
+ {
+ // The uri is an absolute path
+ aFileName.Append( fileParser.Drive() );
+ // Append path, file name and extension from the uri.
+ if ( fileParser.PathPresent() )
+ {
+ aFileName.Append( fileParser.Path() );
+ }
+ if ( fileParser.NamePresent() )
+ {
+ aFileName.Append( fileParser.Name() );
+ }
+ if ( fileParser.ExtPresent() )
+ {
+ aFileName.Append( fileParser.Ext() );
+ }
+
+ if ( !ConeUtils::FileExists( aFileName ) )
+ {
+ return EFalse;
+ }
+ return ETrue;
+ }
+ else
+ {
+
+ TParse svgFilenameParser;
+ if ( svgFilenameParser.Set( aRefPath,NULL,NULL ) != KErrNone )
+ {
+ return EFalse;
+ }
+
+ if ( svgFilenameParser.DrivePresent() )
+ {
+ aFileName.Append( svgFilenameParser.Drive() );
+ }
+
+ TInt dotdotPos = copyUri.Find( KDotDot );
+ TInt rightPos = 0;
+
+ if ( dotdotPos != KErrNotFound )
+ {
+ // If ".." is present collapse it with the parent path
+ if ( svgFilenameParser.PathPresent() )
+ {
+ do
+ {
+ if ( dotdotPos > 1 )
+ {
+ svgFilenameParser.AddDir( copyUri.Left(dotdotPos - 1) );
+ }
+
+ if ( svgFilenameParser.PopDir() != KErrNone )
+ {
+ return EFalse;
+ }
+
+ rightPos = (copyUri.Length()) - (dotdotPos + 3);
+
+ if ( rightPos > 0 )
+ {
+ copyUri = copyUri.Right( rightPos );
+ }
+
+ }while ( (dotdotPos = copyUri.Find( KDotDot ) )
+ != KErrNotFound );
+
+ aFileName.Append( svgFilenameParser.Path() );
+ aFileName.Append( copyUri );
+ }
+ else
+ {
+ return EFalse;
+ }
+ }
+ else
+ {
+ if ( svgFilenameParser.PathPresent() )
+ {
+ aFileName.Append( svgFilenameParser.Path() );
+ }
+
+ // Append path, file name and extension from the uri.
+ if ( fileParser.PathPresent() )
+ {
+ TFileName path(fileParser.Path() );
+ path.Copy(path.Right(path.Length()-1));
+ aFileName.Append( path );
+
+ }
+
+ if ( fileParser.NamePresent() )
+ {
+ aFileName.Append( fileParser.Name() );
+ }
+ if ( fileParser.ExtPresent() )
+ {
+ aFileName.Append( fileParser.Ext() );
+ }
+ }
+ if ( !ConeUtils::FileExists( aFileName ) )
+ {
+ return EFalse;
+ }
+ return ETrue;
+ }
+ }
+
+HBufC* CSvgReadCodec::GetImagesPath(
+ CSvgReadCodec::TImagesLocation aImagesLocation) const
+ {
+ HBufC* fullImagesPath = HBufC::New( KMaxPath );
+ if(fullImagesPath)
+ {
+ TPtr ptrFullImagesPath(fullImagesPath->Des());
+
+ TPtrC8 ptrImagesPath((TText8*)text_images_path);
+ TFileName imagesPath16;
+ imagesPath16.Copy(ptrImagesPath);
+
+ switch( aImagesLocation )
+ {
+ case EPhoneMemory:
+ {
+ TPtrC8 ptrRootPhoneMemPath((TText8*)text_phone_memory_root_path);
+ ptrFullImagesPath.Copy(ptrRootPhoneMemPath);
+ }
+ break;
+ case EMemoryCard:
+ {
+ TPtrC8 ptrRootMemCardPath((TText8*)text_memory_card_root_path);
+ ptrFullImagesPath.Copy(ptrRootMemCardPath);
+ }
+ break;
+ default:
+ break;
+ }
+ ptrFullImagesPath.Append(imagesPath16);
+ }
+ return fullImagesPath;
+ }
+
+ //------------------------------------------------------------------------
+//From MsvgLoadingListener
+/**
+ * Query the listener if every element is to be reported or only
+ * the children of <svg> tag.
+ *
+ * @since 1.0
+ * @return : ETrue if every element is to be reported, otherwise
+ * only the children of <svg> are reported.
+ */
+ TBool CSvgReadCodec::ReportAllElements()
+ {
+ return ETrue;
+ }
+
+ /**
+ * Query the listener if client will call 'AssignImageData' to decode images
+ * separately from parsing. This is used to avoid non-thread-safe calls in
+ * creating bitmap and decoding images, which must be executed in the main thread.
+ *
+ * @since 1.0
+ * @return : ETrue to use 'ImageDataReference' instead of 'FetchImage'.
+ */
+ TBool CSvgReadCodec::WillAssignImageData()
+ {
+ return ETrue;
+ }
+
+ /**
+ * Callback when the href:xlink attribute is encountered for the <image>
+ * element. This method is used to notify clients of image data references
+ * needed by <image> element. This method is called only when 'WillAssignImageData'
+ * returns ETrue.
+ *
+ * @since 1.0
+ * @return : none.
+ */
+ void CSvgReadCodec::ImageDataReference( const TDesC& aUri )
+ {
+ iImagesPresent = ETrue;
+
+ HBufC8* lImageData = NULL;
+
+ TInt errorCode = KErrNotFound;
+ TInt ret = 0;
+ TRAPD(err, ret = IsDownloadNeededL(aUri));
+ if(err==KErrNone)
+ {
+ if( ret != ELocalImageFile)
+ {
+ lImageData = HBufC8::New(0);
+ if(lImageData)
+ {
+ iSvgModule->AssignImageData(aUri , lImageData );
+ }
+
+ return;
+ }
+
+ _LIT(KEncodedImage,"data:image");
+
+ if( ! ( aUri.Left(10).Compare(KEncodedImage) ))
+ {
+ _LIT(KBase,"Base64");
+ if(aUri.FindF(KBase) != KErrNotFound)
+ {
+ TInt startIndex = aUri.Locate( ';' );
+ TInt endIndex = aUri.Locate( ',' );
+ // find index of first character after white-space
+ TInt index = endIndex + 1;
+ while ( index < aUri.Length() && TChar( aUri[index] ).IsSpace() )
+ index++;
+ // must be 8-bit
+ TInt length = aUri.Length() - index;
+ HBufC8* encoded = HBufC8::New( length );
+ if(encoded)
+ {
+ encoded->Des().Copy( aUri.Right( length ) );
+ // Assign to member variable to destroy after image is process.
+ lImageData = HBufC8::New( length );
+ if(lImageData)
+ {
+ TPtr8 decodedDes = lImageData->Des();
+ // decode
+ TImCodecB64 encodingBase64;
+ TInt decodeError = encodingBase64.Decode( *encoded, decodedDes );
+ delete encoded;
+ encoded = NULL;
+ }
+ }
+ }
+ else
+ {
+ //lImageData = HBufC8::NewL(0);
+ }
+ }
+ else
+ {
+ RFile lSvgFile;
+ TFileName lFileName;
+ RFs session;
+
+ TInt Connecterror = session.Connect();
+
+ HBufC* phoneMemImagesPath = GetImagesPath(EPhoneMemory);
+ TPtr ptrphoneMemImagesPath(phoneMemImagesPath->Des());
+ HBufC* memCardImagesPath = GetImagesPath(EMemoryCard);
+ TPtr ptrMemCardImagesPath(memCardImagesPath->Des());
+
+ if(GetLocalFile( aUri, lFileName, ptrphoneMemImagesPath))
+ errorCode = lSvgFile.Open( session, lFileName, EFileShareAny );
+ else if(GetLocalFile( aUri, lFileName, ptrMemCardImagesPath))
+ errorCode = lSvgFile.Open( session, lFileName, EFileShareAny );
+
+ delete memCardImagesPath;
+ delete phoneMemImagesPath;
+
+ if(errorCode == KErrNone)
+ {
+ // Get the size of the data to create read buffer
+ TInt lFileSize = 0;
+ TInt sizeError = lSvgFile.Size(lFileSize) ;
+ // Create buffer that will contain the file data
+ lImageData = HBufC8::New(lFileSize);
+ if(lImageData)
+ {
+ TPtr8 lFileDataPtr(lImageData->Des());
+
+ // Read from the file
+ TInt ReadError = lSvgFile.Read(lFileDataPtr);
+ }
+ }
+ else
+ {
+ lImageData = HBufC8::New(0);
+ }
+ lSvgFile.Close();
+ session.Close();
+ }
+ if(lImageData)
+ {
+ iSvgModule->AssignImageData(aUri , lImageData );
+ }
+ }
+ }
+
+ /**
+ * Notified when the start of a svg document(<svg> tag) is encountered.
+ *
+ * @since 1.0
+ * @return : For future use. Value is ignored.
+ */
+ TBool CSvgReadCodec::DocumentStart()
+ {
+ return EFalse;
+ }
+
+ /**
+ * Notified when the end of a svg document(</svg> tag) is encountered.
+ *
+ * @since 1.0
+ * @return : For future use. Value is ignored.
+ */
+ TBool CSvgReadCodec::DocumentEnd()
+ {
+ return ETrue;
+ }
+
+ /**
+ * Notified when the start of a svg element is encountered.
+ *
+ * @since 1.0
+ * @param : aTagName -- name of svg tag
+ * @param : aAttributeList -- attribute list.
+ * @return : For future use. Value is ignored.
+ */
+ TBool CSvgReadCodec::ElementStart( const TDesC& /*aTagName*/,
+ MSvgAttributeList& /*aAttributeList*/)
+ {
+ return ETrue;
+ }
+
+ /**
+ * Notified when the end of a svg element is encountered.
+ * activated.
+ *
+ * @since 1.0
+ * @param : aTagName -- name of svg tag
+ * @return : For future use. Value is ignored.
+ */
+ TBool CSvgReadCodec::ElementEnd( const TDesC& /*aTagName*/ )
+ {
+ return ETrue;
+ }
+
+ /**
+ * Notified when an external data is needed by the svg document,
+ * such as a image-file or an embedded svg-file.
+ *
+ * @since 1.0
+ * @param : aUri -- URI string of external data
+ * @return : For future use. Value is ignored.
+ */
+ TBool CSvgReadCodec::ExternalDataRequested( const TDesC& /*aUri*/ )
+ {
+ return EFalse;
+ }
+
+ /**
+ * Notified when an external data has been retrieved,
+ * such as a image-file or an embedded svg-file.
+ *
+ * @since 1.0
+ * @param : aUri -- URI string of external data
+ * @return : For future use. Value is ignored.
+ */
+ TBool CSvgReadCodec::ExternalDataReceived( const TDesC& /*aUri*/ )
+ {
+ return EFalse;
+ }
+
+ /**
+ * Notified when an external data request has failed.
+ *
+ * @since 1.0
+ * @param : aUri -- URI string of external data
+ * @return : For future use. Value is ignored.
+ */
+ TBool CSvgReadCodec::ExternalDataRequestFailed( const TDesC& /*aUri*/ )
+ {
+ return EFalse;
+ }
+
+ /**
+ * Notified when an unsupported element is encountered.
+ *
+ * @since 1.0
+ * @param : aTagName -- tag name of element
+ * @param : aAttributeList -- attribute list.
+ * @return : For future use. Value is ignored.
+ */
+ TBool CSvgReadCodec::UnsupportedElement( const TDesC& /*aTagName*/,
+ MSvgAttributeList& /*aAttributeList*/ )
+ {
+ return EFalse;
+ }
+
+
+ void CSvgReadCodec::ImagesLoaded(TInt /*aError*/)
+ {
+ iImagesLoaded = ETrue;
+ iImagesPresent = EFalse;
+ }
+
+void CSvgReadCodec::GetNewDataPosition(TInt& aPosition, TInt& /*aLength*/)
+ {
+ // Reset position to force seek to beginning
+ aPosition =0;
+ }
+
+
+
+
+
+//End of file