scrsaver/scrsaverplugins/SlideshowPlugin/src/SlideshowSlide.cpp
changeset 0 040fcad49f44
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/scrsaver/scrsaverplugins/SlideshowPlugin/src/SlideshowSlide.cpp	Thu Dec 17 08:46:04 2009 +0200
@@ -0,0 +1,123 @@
+/*
+* Copyright (c) 2006 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:     Stores a single slide
+*
+*/
+
+
+
+
+
+//  INCLUDES
+#include "SlideshowSlide.h"
+#include "SlideshowSlideLoader.h"
+#include "SlideshowPluginUtils.h"
+    
+// Creator
+CSlideshowSlide* CSlideshowSlide::NewL(TDesC& aFileName, TBool aIsOnMC)
+    {
+    CSlideshowSlide* self = new (ELeave) CSlideshowSlide(aIsOnMC);
+    CleanupStack::PushL(self);
+    self->ConstructL(aFileName);
+    CleanupStack::Pop(self);
+    return self;
+    }
+
+// Destructor
+CSlideshowSlide::~CSlideshowSlide()
+    {
+    ReleaseImage();
+    delete iSlideLoader;
+    delete iFileName;
+    }
+
+
+// Default C'tor
+CSlideshowSlide::CSlideshowSlide(TBool aIsOnMC)
+    : iFlags(SSS_NONE)
+    {
+    if (aIsOnMC)
+        {
+        iFlags |= SSS_ISONMC;
+        }
+    }
+
+// is decoding in progress
+TBool CSlideshowSlide::IsDecodingInProgress()
+	{
+	if(iSlideLoader->IsActive())
+		{
+		return ETrue;
+		}
+	return EFalse;
+	}
+// Could not decode the file
+TBool CSlideshowSlide::CouldNotDecodeFile()
+	{
+	if (iFlags & SSS_DECODEFAILED)
+        {
+        return ETrue;
+        }
+	return EFalse;
+	}
+// Two-phase constructor
+void CSlideshowSlide::ConstructL(TDesC& aFileName)
+    {
+    // Allocate space for the filename and save it
+    iFileName = HBufC::NewL(aFileName.Length());
+    *iFileName = aFileName;
+    iSlideLoader = CSlideshowSlideLoader::NewL(this);
+    }
+// Prepares the slide (loads image)
+void CSlideshowSlide::PrepareSlideL(const TSize& aTargetSize)
+    {
+   	if (iFlags & SSS_IMAGELOADED)
+      {
+      	  return;
+      }
+    if( iSlideLoader->IsActive())
+    	{
+    	// slide is being decoded ... should wait .. dont call LoadSlideL here
+    	// should not come here..
+    	return;
+    	}
+    iSlideLoader->LoadSlideL(*iFileName, aTargetSize);
+    }
+
+// Is slide decoded completely
+TBool CSlideshowSlide::IsSlideDecoded()
+	{
+	if (iFlags & SSS_IMAGELOADED)
+        {
+        return ETrue;
+        }
+	return EFalse;
+	}
+// Releases the slide's image
+void CSlideshowSlide::ReleaseImage()
+    {
+    // if decoding is in progress... at any cost dont delete the image before Canceling the decoding
+    if(IsDecodingInProgress())
+    	{
+    	iSlideLoader->Cancel();
+    	}
+    else if(iImage )
+    	{
+    	delete iImage;
+    	iImage = NULL;
+    	}
+    //image deleted, revert back to not decoded state
+    iFlags &= ~(SSS_IMAGELOADED);
+    }
+//  End of File