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/*
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* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description :
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*
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*/
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#include "tsgraphicfilescalinghandler.h"
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#include <imageconversion.h>
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// -----------------------------------------------------------------------------
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// -----------------------------------------------------------------------------
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//
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CTsGraphicFileScalingHandler::CTsGraphicFileScalingHandler(MImageReadyCallBack &aNotify,
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const TSize &aNewSize,
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TKindOfScaling aKindOfScaling
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/* = CTsGraphicFileScalingHandler::EIgnoreAspectRatio*/) :
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CActive(EPriorityNormal),
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mNotify(aNotify),
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mNewSize(aNewSize),
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mKindOfScaling(aKindOfScaling),
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mCurrentOperation(ENone)
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{
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CActiveScheduler::Add(this);
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}
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// -----------------------------------------------------------------------------
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// -----------------------------------------------------------------------------
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//
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EXPORT_C CTsGraphicFileScalingHandler::~CTsGraphicFileScalingHandler()
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{
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Cancel();
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delete mInputBitmap;
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delete mOutputBitmap;
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delete mImageDecoder;
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delete mBitmapScaler;
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}
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// -----------------------------------------------------------------------------
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// -----------------------------------------------------------------------------
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//
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EXPORT_C CTsGraphicFileScalingHandler* CTsGraphicFileScalingHandler::NewL(MImageReadyCallBack &aNotify,
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RFs &aFs,
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const TDesC &aFileName,
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const TDesC8& aMimeType,
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const TSize &aNewSize,
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TKindOfScaling aKindOfScaling
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/* = CTsGraphicFileScalingHandler::EIgnoreAspectRatio*/)
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{
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CTsGraphicFileScalingHandler *self = CTsGraphicFileScalingHandler::NewLC(aNotify,
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aFs,
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aFileName,
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aMimeType,
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aNewSize,
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aKindOfScaling);
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CleanupStack::Pop();
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return self;
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}
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// -----------------------------------------------------------------------------
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// -----------------------------------------------------------------------------
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//
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EXPORT_C CTsGraphicFileScalingHandler* CTsGraphicFileScalingHandler::NewLC(MImageReadyCallBack &aNotify,
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RFs &aFs,
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const TDesC &aFileName,
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const TDesC8& aMimeType,
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const TSize &aNewSize,
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TKindOfScaling aKindOfScaling
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/* = CTsGraphicFileScalingHandler::EIgnoreAspectRatio*/)
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{
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CTsGraphicFileScalingHandler *self = new (ELeave) CTsGraphicFileScalingHandler(aNotify,
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aNewSize,
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aKindOfScaling);
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CleanupStack::PushL(self);
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self->ConstructL(aFs, aFileName, aMimeType);
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return self;
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}
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// -----------------------------------------------------------------------------
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// -----------------------------------------------------------------------------
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//
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void CTsGraphicFileScalingHandler::ConstructL(RFs &aFs, const TDesC &aFileName, const TDesC8& aMimeType)
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{
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if (aFileName.Length() == 0
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|| aFs.IsValidName(aFileName) == EFalse) {
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User::Leave(KErrPathNotFound);
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}
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if (aMimeType.Length() == 0) {
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User::Leave(KErrBadName);
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}
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if (0>=mNewSize.iWidth || 0>=mNewSize.iHeight) {
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User::Leave(KErrCorrupt);
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}
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mInputBitmap = new(ELeave)CFbsBitmap();
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DecodingOperationL(aFs, aFileName, aMimeType);
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SetActive();
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}
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// -----------------------------------------------------------------------------
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// -----------------------------------------------------------------------------
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//
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EXPORT_C CTsGraphicFileScalingHandler* CTsGraphicFileScalingHandler::NewL(MImageReadyCallBack &aNotify,
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const CFbsBitmap &aImputFbsBitmap,
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const TSize &aNewSize,
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TKindOfScaling aKindOfScaling
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/* = CTsGraphicFileScalingHandler::EIgnoreAspectRatio*/)
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{
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CTsGraphicFileScalingHandler *self = CTsGraphicFileScalingHandler::NewLC(aNotify,
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aImputFbsBitmap,
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aNewSize,
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aKindOfScaling);
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CleanupStack::Pop();
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return self;
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}
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// -----------------------------------------------------------------------------
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// -----------------------------------------------------------------------------
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//
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EXPORT_C CTsGraphicFileScalingHandler* CTsGraphicFileScalingHandler::NewLC(MImageReadyCallBack &aNotify,
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const CFbsBitmap &aImputFbsBitmap,
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const TSize &aNewSize,
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TKindOfScaling aKindOfScaling
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/* = CTsGraphicFileScalingHandler::EIgnoreAspectRatio*/)
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{
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CTsGraphicFileScalingHandler *self = new (ELeave) CTsGraphicFileScalingHandler(aNotify,
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aNewSize,
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aKindOfScaling);
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CleanupStack::PushL(self);
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self->ConstructL(aImputFbsBitmap);
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return self;
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}
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// -----------------------------------------------------------------------------
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// -----------------------------------------------------------------------------
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//
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void CTsGraphicFileScalingHandler::ConstructL(const CFbsBitmap &aImputFbsBitmap)
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{
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if (0>=mNewSize.iWidth || 0>=mNewSize.iHeight) {
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User::Leave(KErrCorrupt);
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}
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mInputBitmap = new(ELeave)CFbsBitmap();
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User::LeaveIfError(mInputBitmap->Duplicate(aImputFbsBitmap.Handle()));
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ScalingOperationL();
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SetActive();
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}
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// -----------------------------------------------------------------------------
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// -----------------------------------------------------------------------------
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//
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void CTsGraphicFileScalingHandler::DoCancel()
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{
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switch (mCurrentOperation) {
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case EConvertBitmapFromFile:
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mImageDecoder->Cancel();
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break;
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case EScale:
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mBitmapScaler->Cancel();
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break;
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}
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mNotify.ImageReadyCallBack(KErrCancel, 0);
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}
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// -----------------------------------------------------------------------------
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// -----------------------------------------------------------------------------
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//
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void CTsGraphicFileScalingHandler::RunL()
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{
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User::LeaveIfError(iStatus.Int());
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switch (mCurrentOperation) {
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case EConvertBitmapFromFile: {
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delete mImageDecoder;
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mImageDecoder = 0;
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ScalingOperationL();
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SetActive();
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break;
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}
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case EScale: {
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mCurrentOperation = ENone;
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delete mBitmapScaler;
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mBitmapScaler = 0;
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delete mInputBitmap;
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mInputBitmap = 0;
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if (mKindOfScaling == CTsGraphicFileScalingHandler::EKeepAspectRatioByExpanding) {
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User::LeaveIfError(mOutputBitmap->Resize(mNewSize));
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}
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mNotify.ImageReadyCallBack(iStatus.Int(), mOutputBitmap);
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break;
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}
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}
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}
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// -----------------------------------------------------------------------------
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// -----------------------------------------------------------------------------
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//
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void CTsGraphicFileScalingHandler::DecodingOperationL(RFs &aFs, const TDesC &aFileName, const TDesC8& aMimeType)
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{
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// convert *.png to bitmap
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mImageDecoder = CImageDecoder::FileNewL(aFs, aFileName, aMimeType);
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const TFrameInfo frameInfo(mImageDecoder->FrameInfo(0));
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mInputBitmap->Reset();
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User::LeaveIfError(mInputBitmap->Create(frameInfo.iOverallSizeInPixels,
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frameInfo.iFrameDisplayMode));
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mImageDecoder->Convert(&iStatus, *mInputBitmap, 0);
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mCurrentOperation = EConvertBitmapFromFile;
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}
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// -----------------------------------------------------------------------------
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// -----------------------------------------------------------------------------
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//
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void CTsGraphicFileScalingHandler::ScalingOperationL()
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{
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mBitmapScaler = CBitmapScaler::NewL();
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mBitmapScaler->SetQualityAlgorithm(CBitmapScaler::EMaximumQuality);
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FixForDisplayModeNotSupportedByScalingOperation();
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mOutputBitmap = new (ELeave)CFbsBitmap();
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User::LeaveIfError(mOutputBitmap->Create(NewSizeToScalingOperation(), mInputBitmap->DisplayMode()));
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mBitmapScaler->Scale(&iStatus, *mInputBitmap, *mOutputBitmap, EFalse);
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mCurrentOperation = EScale;
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}
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// -----------------------------------------------------------------------------
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// -----------------------------------------------------------------------------
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//
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void CTsGraphicFileScalingHandler::FixForDisplayModeNotSupportedByScalingOperation()
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{
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if (EColor16MAP == mInputBitmap->DisplayMode()) {
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mInputBitmap->SetDisplayMode(EColor16MA);
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}
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}
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// -----------------------------------------------------------------------------
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// -----------------------------------------------------------------------------
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//
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TSize CTsGraphicFileScalingHandler::NewSizeToScalingOperation()
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{
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TSize originalSize = mInputBitmap->SizeInPixels();
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float widthFactor = mNewSize.iWidth / (float)originalSize.iWidth;
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float heightFactor = mNewSize.iHeight / (float)originalSize.iHeight;
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TSize retSize(mNewSize);
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if (mKindOfScaling == CTsGraphicFileScalingHandler::EKeepAspectRatio) {
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retSize = (widthFactor < heightFactor) ?
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TSize(mNewSize.iWidth, widthFactor * originalSize.iHeight) :
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TSize(heightFactor * originalSize.iWidth, mNewSize.iHeight);
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} else if (mKindOfScaling == CTsGraphicFileScalingHandler::EKeepAspectRatioByExpanding) {
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retSize = (widthFactor < heightFactor) ?
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TSize(heightFactor * originalSize.iWidth, mNewSize.iHeight) :
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TSize(mNewSize.iWidth, widthFactor * originalSize.iHeight);
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}
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return retSize;
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}
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// -----------------------------------------------------------------------------
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// -----------------------------------------------------------------------------
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//
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TInt CTsGraphicFileScalingHandler::RunError(TInt aError)
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{
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mNotify.ImageReadyCallBack(aError, 0);
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return KErrNone;
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}
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