--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/activityfw/tsutils/src/tsgraphicfilescalinghandler.cpp	Fri May 14 17:24:44 2010 +0300
@@ -0,0 +1,206 @@
+/*
+ * Copyright (c) 2009 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 :
+ *
+ */
+#include "tsgraphicfilescalinghandler.h"
+#include <imageconversion.h>
+
+// -----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
+//
+CTsGraphicFileScalingHandler::CTsGraphicFileScalingHandler(MImageReadyCallBack &aNotify,
+                            const TSize &aNewSize,
+                            TKindOfScaling aKindOfScaling
+                            /* = CTsGraphicFileScalingHandler::EIgnoreAspectRatio*/) :
+    CActive(EPriorityNormal),
+    mNotify(aNotify),
+    mNewSize(aNewSize),
+    mKindOfScaling(aKindOfScaling),
+    mCurrentOperation(ENone)
+{
+}
+
+// -----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
+//
+EXPORT_C CTsGraphicFileScalingHandler::~CTsGraphicFileScalingHandler()
+{
+    Cancel();
+    delete mBitmapFromFile;
+    delete mBitmapOutput;
+    delete mImageDecoder;
+    delete mBitmapScaler;
+}
+
+// -----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
+//
+EXPORT_C CTsGraphicFileScalingHandler* CTsGraphicFileScalingHandler::NewL(MImageReadyCallBack &aNotify,
+                                RFs &aFs,
+                                const TDesC &aFileName,
+                                const TDesC8& aMimeType,
+                                const TSize &aNewSize,
+                                TKindOfScaling aKindOfScaling
+                                /* = CTsGraphicFileScalingHandler::EIgnoreAspectRatio*/)
+{
+    CTsGraphicFileScalingHandler *self = CTsGraphicFileScalingHandler::NewLC(aNotify,
+                                                                 aFs,
+                                                                 aFileName,
+                                                                 aMimeType,
+                                                                 aNewSize,
+                                                                 aKindOfScaling);
+    CleanupStack::Pop();
+    return self;
+}
+
+// -----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
+//
+EXPORT_C CTsGraphicFileScalingHandler* CTsGraphicFileScalingHandler::NewLC(MImageReadyCallBack &aNotify,
+                                RFs &aFs,
+                                const TDesC &aFileName,
+                                const TDesC8& aMimeType,
+                                const TSize &aNewSize,
+                                TKindOfScaling aKindOfScaling
+                                /* = CTsGraphicFileScalingHandler::EIgnoreAspectRatio*/)
+{
+    CTsGraphicFileScalingHandler *self = new (ELeave) CTsGraphicFileScalingHandler(aNotify,
+                                                                       aNewSize,
+                                                                       aKindOfScaling);
+
+    CleanupStack::PushL(self);
+    self->ConstructL(aFs, aFileName, aMimeType);
+    return self;
+}
+
+// -----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
+//
+void CTsGraphicFileScalingHandler::ConstructL(RFs &aFs, const TDesC &aFileName, const TDesC8& aMimeType)
+{
+    if (aFileName.Length() == 0
+        || aFs.IsValidName(aFileName) == EFalse) {
+        User::Leave(KErrPathNotFound);
+    }
+
+    if (aMimeType.Length() == 0) {
+        User::Leave(KErrBadName);
+    }
+
+    if(0>=mNewSize.iWidth || 0>=mNewSize.iHeight) {
+       User::Leave(KErrCorrupt);
+    }
+
+    CActiveScheduler::Add(this);
+
+    mBitmapScaler = CBitmapScaler::NewL();
+    mBitmapScaler->SetQualityAlgorithm(CBitmapScaler::EMaximumQuality);
+
+    // convert *.png to bitmap
+    mImageDecoder = CImageDecoder::FileNewL(aFs, aFileName, aMimeType);
+    mBitmapFromFile = new(ELeave)CFbsBitmap();
+    const TFrameInfo frameInfo(mImageDecoder->FrameInfo(0));
+    User::LeaveIfError(mBitmapFromFile->Create(frameInfo.iOverallSizeInPixels, 
+                                               frameInfo.iFrameDisplayMode));
+
+    mImageDecoder->Convert(&iStatus, *mBitmapFromFile, 0);
+    mCurrentOperation = EConvertBitmapFromFile;
+    SetActive();
+}
+
+// -----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
+//
+void CTsGraphicFileScalingHandler::DoCancel()
+{
+    switch (mCurrentOperation) {
+    case EConvertBitmapFromFile:
+        mImageDecoder->Cancel();
+        break;
+    case EScale:
+        mBitmapScaler->Cancel();
+        break;
+    }
+    mNotify.ImageReadyCallBack(KErrCancel, 0);
+}
+
+// -----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
+//
+void CTsGraphicFileScalingHandler::RunL()
+{
+    User::LeaveIfError(iStatus.Int());
+
+    switch (mCurrentOperation) {
+    case EConvertBitmapFromFile: {
+            delete mImageDecoder;
+            mImageDecoder = 0;
+            
+            mBitmapOutput = new (ELeave)CFbsBitmap();
+            User::LeaveIfError(mBitmapOutput->Create(Scaling(), mBitmapFromFile->DisplayMode()));
+            mBitmapScaler->Scale(&iStatus, *mBitmapFromFile, *mBitmapOutput, EFalse);
+            mCurrentOperation = EScale;
+            SetActive();
+            break;
+        }
+    case EScale: {
+            mCurrentOperation = ENone;
+
+            delete mBitmapScaler;
+            mBitmapScaler = 0;
+            
+            delete mBitmapFromFile;
+            mBitmapFromFile = 0;
+
+            if (mKindOfScaling == CTsGraphicFileScalingHandler::EKeepAspectRatioByExpanding) {
+                User::LeaveIfError(mBitmapOutput->Resize(mNewSize));
+            }
+
+            mNotify.ImageReadyCallBack(iStatus.Int(), mBitmapOutput);
+            break;
+        }
+    }
+}
+
+// -----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
+//
+TSize CTsGraphicFileScalingHandler::Scaling()
+{
+   TSize originalSize = mBitmapFromFile->SizeInPixels();
+   float widthFactor = mNewSize.iWidth / (float)originalSize.iWidth;
+   float heightFactor = mNewSize.iHeight / (float)originalSize.iHeight;
+
+   TSize retSize(mNewSize);
+
+   if (mKindOfScaling == CTsGraphicFileScalingHandler::EKeepAspectRatio) {
+       retSize = (widthFactor < heightFactor) ?
+                 TSize(mNewSize.iWidth, widthFactor * originalSize.iHeight) :
+                 TSize(heightFactor * originalSize.iWidth, mNewSize.iHeight);
+   } else if (mKindOfScaling == CTsGraphicFileScalingHandler::EKeepAspectRatioByExpanding) {
+      retSize = (widthFactor < heightFactor) ?
+                TSize(heightFactor * originalSize.iWidth, mNewSize.iHeight) :
+                TSize(mNewSize.iWidth, widthFactor * originalSize.iHeight);
+   }
+   return retSize;
+}
+// -----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
+//
+TInt CTsGraphicFileScalingHandler::RunError(TInt aError)
+{
+    mNotify.ImageReadyCallBack(aError, 0);
+    return KErrNone;
+}