--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/svgtviewer/SvgtViewerPlugin/UIControlSrc/SVGTThumbnailUtil.cpp Thu Sep 09 11:17:40 2010 +0300
@@ -0,0 +1,303 @@
+/*
+* Copyright (c) 2004,2005 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 SVGT Thumbnail functionality
+* to display SVGT content
+*
+*/
+
+
+
+// INCLUDE FILES
+#include <AknIconUtils.h>
+#include <e32def.h>
+#include <e32base.h>
+#include <eikenv.h>
+#include <fbs.h>
+#include <gdi.h>
+#include <bautils.h>
+#include <SVGEngineInterfaceImpl.h>
+#include <data_caging_path_literals.hrh>
+
+// User Includes
+#include "SVGTUIControlDbgFlags.hrh"
+#include "SVGTThumbnailUtil.h"
+
+// Constants
+// General Constants
+const TInt KSccConstMinusOne = -1;
+const TInt KSccConstZero = 0;
+const TUint KSccBackground = 0xffffffff;
+
+
+// SMIL Fit Value
+_LIT( KSccSmilFitValue,"meet" );
+
+// ============================ MEMBER FUNCTIONS ===============================
+// -----------------------------------------------------------------------------
+// CSVGTThumbnailUtil::GenerateThumbnailLD
+// Generate thumbnails for SVGT content.
+// -----------------------------------------------------------------------------
+//
+EXPORT_C TBool CSVGTThumbnailUtil::GenerateThumbnailLD(
+ RFile& aFileHandle, // Filehandle of SVGT
+ CFbsBitmap& aThumbnailBitmap, // Thumbnail Bitmap
+ CFbsBitmap& aThumbnailBitmapMask ) // BitMap mask
+ {
+ CSVGTThumbnailUtil *tnUtilPtr = CSVGTThumbnailUtil::NewLC( aFileHandle,
+ aThumbnailBitmap,
+ aThumbnailBitmapMask );
+ TBool retVal = tnUtilPtr->GenerateThumbnail();
+ CleanupStack::PopAndDestroy( tnUtilPtr );
+ return retVal;
+ }
+
+
+
+// -----------------------------------------------------------------------------
+// CSVGTThumbnailUtil::UpdateScreen
+// Implements MSvgRequestObserver::UpdateScreen.
+// -----------------------------------------------------------------------------
+//
+void CSVGTThumbnailUtil::UpdateScreen()
+ {
+ }
+
+// -----------------------------------------------------------------------------
+// CSVGTThumbnailUtil::ScriptCall
+// Implements MSvgRequestObserver::ScriptCall.
+// -----------------------------------------------------------------------------
+//
+TBool CSVGTThumbnailUtil::ScriptCall( const TDesC& /*aScript*/,
+ CSvgElementImpl* /*aCallerElement*/ )
+ {
+ return EFalse;
+ }
+
+
+// -----------------------------------------------------------------------------
+// CSVGTThumbnailUtil::FetchImage
+// Implements MSvgRequestObserver::FetchImage. Calls the application call
+// back corresponding to this function if exists, else returns EFalse
+// indicating to the engine that the image was not retrieved.
+// -----------------------------------------------------------------------------
+//
+TInt CSVGTThumbnailUtil::FetchImage( const TDesC& /*aUri*/,
+ RFs& /*aSession*/, RFile& /*aFileHandle*/ )
+ {
+ return KErrNotFound;
+ }
+
+TInt CSVGTThumbnailUtil::FetchFont( const TDesC& /* aUri */,
+ RFs& /* aSession */, RFile& /* aFileHandle */ )
+ {
+ return KErrNotSupported;
+ }
+
+// -----------------------------------------------------------------------------
+// CSVGTThumbnailUtil:: GetSmilFitValue
+// Implements the MSvgRequestObserver::GetSmilFitValue.
+// -----------------------------------------------------------------------------
+//
+void CSVGTThumbnailUtil::GetSmilFitValue( TDes& aSmilValue )
+ {
+ aSmilValue.Copy( KSccSmilFitValue );
+ }
+
+// -----------------------------------------------------------------------------
+// CSVGTThumbnailUtil::UpdatePresentation
+// Implements MSvgRequestObserver::UpdatePresentation.
+// -----------------------------------------------------------------------------
+//
+void CSVGTThumbnailUtil::UpdatePresentation( const TInt32&
+ /* aNoOfAnimation */ )
+ {
+ }
+
+// -----------------------------------------------------------------------------
+// CSVGTThumbnailUtil::InitializeEngineL
+// Initiliazes the interface with the SVG engine.
+// -----------------------------------------------------------------------------
+//
+void CSVGTThumbnailUtil::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 );
+ iSvgModule->SetBackgroundColor( KSccBackground );
+ }
+ }
+
+// -----------------------------------------------------------------------------
+// CSVGTThumbnailUtil::GenerateThumbnail
+// Helper function that generates Thumbnail for the SVG content.
+// -----------------------------------------------------------------------------
+//
+TBool CSVGTThumbnailUtil::GenerateThumbnail()
+ {
+ if ( iSvgModule )
+ {
+ MSvgError* result;
+ result = iSvgModule->PrepareDom( iContentFileHandle, iThumbnailHandle );
+
+ // NULL is returned, possible out of memory when create error object.
+ if ( ( !result ) || ( result->HasError() ) )
+ {
+ return EFalse;
+ }
+#ifdef SVGTUICONTROL_DBG_DRM_THUMBNAIL_API_ENABLE
+ // Set thumbnail mode On
+ iSvgModule->SetThumbNailMode( ETrue );
+#endif // SVGTUICONTROL_DBG_DRM_THUMBNAIL_API_ENABLE
+
+ // Setup the engine to use the DOM
+ result = iSvgModule->UseDom( iThumbnailHandle, iThumbnailBitmap );
+ if ( result->HasError() && !result->IsWarning() )
+ {
+ return EFalse;
+ }
+
+ // View Box define for Dom associated frame
+ iSvgModule->ChooseViewBoxIfNotSet(iThumbnailHandle);
+ iSvgModule->InitializeEngine();
+ iSvgModule->RenderFrame( NULL, 0);
+
+ // Render the Mask Bitmap
+ iSvgModule->GenerateMask( iThumbnailBitmapMask );
+#ifdef SVGTUICONTROL_DBG_DRM_THUMBNAIL_API_ENABLE
+ // Set thumbnail mode Off
+ iSvgModule->SetThumbNailMode( EFalse );
+#endif // SVGTUICONTROL_DBG_DRM_THUMBNAIL_API_ENABLE
+
+ return ETrue;
+ }
+ else
+ {
+ return EFalse;
+ }
+
+ }
+
+// -----------------------------------------------------------------------------
+// CSVGTThumbnailUtil::CSVGTThumbnailUtil
+// C++ default constructor.
+// -----------------------------------------------------------------------------
+//
+CSVGTThumbnailUtil::CSVGTThumbnailUtil( RFile& aFileHandle ) :
+ // Thumbnail Variables
+ iThumbnailHandle( KSccConstMinusOne ),
+ iContentFileHandle( aFileHandle )
+{
+}
+
+// -----------------------------------------------------------------------------
+// CSVGTThumbnailUtil::ConstructL
+// Symbian 2nd phase constructor.
+// -----------------------------------------------------------------------------
+//
+void CSVGTThumbnailUtil::ConstructL(
+ CFbsBitmap& aThumbnailBitmap, // Bitmap on which content is to be
+ // rendered
+ CFbsBitmap& aThumbnailBitmapMask )// Bitmap Mask
+ {
+ // Save the user parameters for later access.
+ iSvgModule = NULL;
+ iSVGTBitMapDummy = NULL;
+ iThumbnailBitmap = &aThumbnailBitmap;
+ iThumbnailBitmapMask = &aThumbnailBitmapMask;
+ InitializeEngineL();
+ }
+
+// -----------------------------------------------------------------------------
+// CSVGTThumbnailUtil::NewL
+// Factory function for creating CSVGTThumbnailUtil objects for thumbnail
+// generation.
+// Returns: CSVGTThumbnailUtil* ; Pointer to the created object.
+// Leaves if error occurs during creation.
+// -----------------------------------------------------------------------------
+//
+CSVGTThumbnailUtil* CSVGTThumbnailUtil::NewL(
+ RFile& aFileHandle, // File handle of SVGT Content
+ CFbsBitmap& aThumbnailBitmap, // Bitmap on which content is to be
+ // rendered
+ CFbsBitmap& aThumbnailBitmapMask )// Bitmap Mask
+ {
+ CSVGTThumbnailUtil* self = CSVGTThumbnailUtil::NewLC( aFileHandle,
+ aThumbnailBitmap,
+ aThumbnailBitmapMask );
+ CleanupStack::Pop( self );
+ return self;
+ }
+
+// -----------------------------------------------------------------------------
+// CSVGTThumbnailUtil::NewLC
+// Factory function for creating CSVGTThumbnailUtil objects for thumbnail
+// generation.
+// Returns: CSVGTThumbnailUtil* ; Pointer to the created object.
+// Leaves if error occurs during creation.
+// -----------------------------------------------------------------------------
+//
+CSVGTThumbnailUtil* CSVGTThumbnailUtil::NewLC(
+ RFile& aFileHandle, // File Handle of SVGT Content
+ CFbsBitmap& aThumbnailBitmap, // Bitmap on which content is to be
+ // rendered
+ CFbsBitmap& aThumbnailBitmapMask) // Bitmap Mask
+ {
+ CSVGTThumbnailUtil* self = new ( ELeave ) CSVGTThumbnailUtil(
+ aFileHandle );
+ CleanupStack::PushL( self );
+ self->ConstructL( aThumbnailBitmap, aThumbnailBitmapMask );
+ return self;
+ }
+
+
+// -----------------------------------------------------------------------------
+// CSVGTThumbnailUtil::~CSVGTThumbnailUtil
+// Destructor
+// -----------------------------------------------------------------------------
+//
+CSVGTThumbnailUtil::~CSVGTThumbnailUtil()
+ {
+ if ( iThumbnailHandle != KSccConstMinusOne )
+ {
+ if ( iSvgModule )
+ {
+ iSvgModule->DeleteDom( iThumbnailHandle );
+ }
+ }
+
+ // Dummy bitmap
+ delete iSVGTBitMapDummy;
+
+ // SVG Engine
+ delete iSvgModule;
+
+ // Reset the Thumbnail and Mask as this is owned by the caller
+ iThumbnailBitmap = NULL;
+ iThumbnailBitmapMask = NULL;
+ }
+
+
+// End of File