author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Fri, 11 Jun 2010 13:58:37 +0300 | |
changeset 83 | 156f692b1687 |
parent 80 | 397d00875918 |
permissions | -rw-r--r-- |
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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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// |
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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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// |
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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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// |
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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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// |
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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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|
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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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// |
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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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|
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if (aMimeType.Length() == 0) { |
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User::Leave(KErrBadName); |
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} |
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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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// |
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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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// |
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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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|
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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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149 |
// |
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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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155 |
|
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mInputBitmap = new(ELeave)CFbsBitmap(); |
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User::LeaveIfError(mInputBitmap->Duplicate(aImputFbsBitmap.Handle())); |
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158 |
|
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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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164 |
// ----------------------------------------------------------------------------- |
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165 |
// |
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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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174 |
break; |
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} |
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mNotify.ImageReadyCallBack(KErrCancel, 0); |
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} |
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178 |
|
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// ----------------------------------------------------------------------------- |
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180 |
// ----------------------------------------------------------------------------- |
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181 |
// |
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void CTsGraphicFileScalingHandler::RunL() |
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{ |
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User::LeaveIfError(iStatus.Int()); |
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185 |
|
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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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190 |
|
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ScalingOperationL(); |
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SetActive(); |
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193 |
break; |
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194 |
} |
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case EScale: { |
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mCurrentOperation = ENone; |
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197 |
|
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delete mBitmapScaler; |
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mBitmapScaler = 0; |
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200 |
|
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delete mInputBitmap; |
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mInputBitmap = 0; |
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203 |
|
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if (mKindOfScaling == CTsGraphicFileScalingHandler::EKeepAspectRatioByExpanding) { |
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User::LeaveIfError(mOutputBitmap->Resize(mNewSize)); |
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206 |
} |
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207 |
|
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mNotify.ImageReadyCallBack(iStatus.Int(), mOutputBitmap); |
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209 |
break; |
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210 |
} |
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211 |
} |
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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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} |