idlehomescreen/xmluirendering/renderingplugins/xnbitmapfactory/src/xnimagedecoder.cpp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/idlehomescreen/xmluirendering/renderingplugins/xnbitmapfactory/src/xnimagedecoder.cpp Wed Jun 09 09:29:04 2010 +0300
@@ -0,0 +1,206 @@
+/*
+* Copyright (c) 2008 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: Image decoder
+*
+*/
+
+// System includes
+#include <imageconversion.h>
+
+// User includes
+#include "xncomponent.h"
+#include "xnnodepluginif.h"
+#include "xnuienginepluginif.h"
+#include "xnbitmapadapter.h"
+#include "xnimagedecoder.h"
+
+using namespace ContentAccess;
+
+// Constants
+
+// ============================ LOCAL FUNCTIONS ================================
+// ============================ MEMBER FUNCTIONS ===============================
+// -----------------------------------------------------------------------------
+// CXnImageDecoder::NewL()
+// Two-phased constructor.
+// -----------------------------------------------------------------------------
+//
+CXnImageDecoder* CXnImageDecoder::NewL( CXnBitmapAdapter& aAdapter, RFs& aFs )
+ {
+ CXnImageDecoder* self = CXnImageDecoder::NewLC( aAdapter, aFs );
+ CleanupStack::Pop( self );
+ return self;
+ }
+
+// -----------------------------------------------------------------------------
+// CXnImageDecoder::NewLC()
+// Two-phased constructor.
+// -----------------------------------------------------------------------------
+//
+CXnImageDecoder* CXnImageDecoder::NewLC( CXnBitmapAdapter& aAdapter, RFs& aFs )
+ {
+ CXnImageDecoder* self = new ( ELeave ) CXnImageDecoder( aAdapter, aFs );
+ CleanupStack::PushL( self );
+ self->ConstructL();
+ return self;
+ }
+
+// -----------------------------------------------------------------------------
+// CXnImageDecoder::~CXnImageDecoder()
+// C++ default destructor.
+// -----------------------------------------------------------------------------
+//
+CXnImageDecoder::~CXnImageDecoder()
+ {
+ Cancel();
+
+ Cleanup();
+ }
+
+// -----------------------------------------------------------------------------
+// CXnImageDecoder::CXnImageDecoder()
+// C++ default constructor.
+// -----------------------------------------------------------------------------
+//
+CXnImageDecoder::CXnImageDecoder( CXnBitmapAdapter& aAdapter, RFs& aFs )
+ : CActive( CActive::EPriorityHigh ), iAdapter( aAdapter ), iFs( aFs )
+ {
+ CActiveScheduler::Add( this );
+ }
+
+// -----------------------------------------------------------------------------
+// CXnImageDecoder::ConstructL()
+// 2nd phase constructor.
+// -----------------------------------------------------------------------------
+//
+void CXnImageDecoder::ConstructL()
+ {
+ }
+
+// -----------------------------------------------------------------------------
+// CXnImageDecoder::RunL()
+//
+// -----------------------------------------------------------------------------
+//
+void CXnImageDecoder::RunL()
+ {
+ // Takes ownership of iBitmap and iMask
+ iAdapter.SetContentBitmaps( iBitmap, iMask );
+
+ iBitmap = NULL;
+ iMask = NULL;
+
+ delete iDecoder;
+ iDecoder = NULL;
+
+ iAdapter.Component()->Node()->UiEngineL()->RenderUIL();
+ }
+
+// -----------------------------------------------------------------------------
+// CXnImageDecoder::RunError()
+//
+// -----------------------------------------------------------------------------
+//
+TInt CXnImageDecoder::RunError( TInt /*aError*/ )
+ {
+ Cleanup();
+
+ // Set NULL bitmaps
+ TRAP_IGNORE( RunL() );
+
+ // Ignore
+ return KErrNone;
+ }
+
+// -----------------------------------------------------------------------------
+// CXnImageDecoder::DoCancel()
+//
+// -----------------------------------------------------------------------------
+//
+void CXnImageDecoder::DoCancel()
+ {
+ Cleanup();
+ }
+
+// -----------------------------------------------------------------------------
+// CXnImageDecoder::DecodeL()
+//
+// -----------------------------------------------------------------------------
+//
+void CXnImageDecoder::DecodeL( TFileName& aFilename )
+ {
+ Cancel();
+
+ TInt options(
+ CImageDecoder::EOptionAlwaysThread |
+ CImageDecoder::EPreferFastDecode );
+
+ iDecoder = CImageDecoder::FileNewL( iFs, aFilename, EView,
+ ( CImageDecoder::TOptions ) options );
+
+ TFrameInfo frameInfo( iDecoder->FrameInfo( 0 ) );
+
+ CFbsBitmap* bitmap = new ( ELeave ) CFbsBitmap;
+ CleanupStack::PushL( bitmap );
+
+ User::LeaveIfError( bitmap->Create(
+ frameInfo.iOverallSizeInPixels, frameInfo.iFrameDisplayMode ) );
+
+ if ( frameInfo.iFlags & TFrameInfo::ETransparencyPossible )
+ {
+ CFbsBitmap* mask = new ( ELeave ) CFbsBitmap;
+ CleanupStack::PushL( mask );
+
+ User::LeaveIfError( mask->Create( frameInfo.iOverallSizeInPixels,
+ ( frameInfo.iFlags & TFrameInfo::EAlphaChannel ) ? EGray256 : EGray2 ) );
+
+ iDecoder->Convert( &iStatus, *bitmap, *mask );
+
+ CleanupStack::Pop( mask );
+ iMask = mask;
+ }
+ else
+ {
+ iDecoder->Convert( &iStatus, *bitmap );
+ }
+
+ CleanupStack::Pop( bitmap );
+ iBitmap = bitmap;
+
+ SetActive();
+ }
+
+// -----------------------------------------------------------------------------
+// CXnImageDecoder::Cleanup()
+//
+// -----------------------------------------------------------------------------
+//
+void CXnImageDecoder::Cleanup()
+ {
+ if ( iDecoder )
+ {
+ iDecoder->Cancel();
+ }
+
+ delete iDecoder;
+ iDecoder = NULL;
+
+ delete iBitmap;
+ iBitmap = NULL;
+
+ delete iMask;
+ iMask = NULL;
+ }
+
+// End of file