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/*
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* Copyright (c) 2003 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: SVG Implementation source file
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*
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*/
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#include "SVGGradientElementImpl.h"
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#include "SVGDocumentImpl.h"
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// ---------------------------------------------------------------------------
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//
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// ---------------------------------------------------------------------------
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CSvgGradientElementImpl::CSvgGradientElementImpl( CSvgDocumentImpl* aDoc )
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{
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SetOwnerDocument(aDoc);
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}
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// ---------------------------------------------------------------------------
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//
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// ---------------------------------------------------------------------------
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void CSvgGradientElementImpl::ConstructL(const TUint8 aElemID)
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{
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CSvgElementImpl::InitializeL( aElemID );
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iSvgStyleProperties = new(ELeave) RPointerArray<CCssValue>(KCSS_MAX_ATTR);
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User::LeaveIfError( iSvgStyleProperties->Append( NULL ) );
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iSvgStyleProperties->Remove( 0 );
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iSvgUriReferenceImpl = CSvgUriReferenceImpl::NewL();
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iSvgTransformable = CSvgTransformableImpl::NewL();
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iSvgStopElementArray = new( ELeave ) RPointerArray<CSvgStopElementImpl> ( 1 );
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iStopElementData = new(ELeave) RArray<TSvgStopData> (1);
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iStopElementData->Reset();
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}
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// ---------------------------------------------------------------------------
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//
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// ---------------------------------------------------------------------------
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CSvgGradientElementImpl::~CSvgGradientElementImpl()
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{
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if(iSvgStopElementArray)
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{
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iSvgStopElementArray->Close();
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delete iSvgStopElementArray;
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iSvgStopElementArray = NULL;
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}
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if ( iSvgStyleProperties )
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{
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iSvgStyleProperties->Close();
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delete iSvgStyleProperties;
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iSvgStyleProperties = NULL;
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}
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if ( iSvgUriReferenceImpl )
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{
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delete iSvgUriReferenceImpl;
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iSvgUriReferenceImpl = NULL;
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}
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if(iStopElementData)
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{
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iStopElementData->Close();
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delete iStopElementData;
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iStopElementData = NULL;
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}
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}
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// ---------------------------------------------------------------------------
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//
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// ---------------------------------------------------------------------------
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TInt CSvgGradientElementImpl::SetAttributeL( const TDesC& aName,const TDesC& aValue )
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{
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CSvgElementImpl::SetAttributeL(aName,aValue);
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if(aName==_L("gradientUnits")||aName==_L("patternUnits"))
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{
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if(aValue==_L("userSpaceOnUse"))
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iGradientPaint->iGradientUnits = KuserSpaceOnUse;
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else if(aValue==_L("objectBoundingBox"))
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iGradientPaint->iGradientUnits = KobjectBoundingBox;
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}
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else if(aName==_L("spreadMethod"))
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{
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if(aValue==_L("pad"))
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iGradientPaint->iSpreadMethod = KspreadMethodPad;
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else if(aValue==_L("reflect"))
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iGradientPaint->iSpreadMethod = KspreadMethodReflect;
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else if(aValue==_L("repeat"))
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iGradientPaint->iSpreadMethod = KspreadMethodRepeat;
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}
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return KErrNone;
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}
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TInt CSvgGradientElementImpl::SetAttributeIntL( const TInt aNameId,
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const TInt32 aValue )
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{
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if(aNameId == KAtrSpreadMethods)
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{
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iGradientPaint->iSpreadMethod = (TUint16) aValue;
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}
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else if(aNameId == KAtrGradientUnits)
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{
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iGradientPaint->iGradientUnits = (TUint16) aValue;
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}
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else
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CSvgElementImpl::SetAttributeIntL (aNameId,aValue);
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return 0;
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}
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TInt CSvgGradientElementImpl::GetAttributeIntL( const TInt aNameId, TInt32& aValue )
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{
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if(aNameId == KAtrSpreadMethods)
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{
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aValue = iGradientPaint->iSpreadMethod ;
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}
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else if(aNameId == KAtrGradientUnits)
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{
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aValue = iGradientPaint->iGradientUnits ;
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}
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else
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CSvgElementImpl::GetAttributeIntL (aNameId,aValue);
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return 0;
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}
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// ---------------------------------------------------------------------------
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// Adjusts the offset values of all the previously added elements such that
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// each gradient offset value is greater than the previous gradient stop's
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// offset value.
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// ---------------------------------------------------------------------------
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void CSvgGradientElementImpl::UpdateOffsetValues(CSvgStopElementImpl *aStopEl)
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{
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TInt count = iSvgStopElementArray->Count();
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if (count == 1)
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{
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return;
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}
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TFloatFixPt aNewOffset = aStopEl->iOffset;
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//Since the Stop Element is already added, The loop runs for "count - 1" times.
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for (TInt i=0; i < count - 1; i++)
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{
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TFloatFixPt OldOffset = iSvgStopElementArray->operator[](i)->iOffset;
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if ( OldOffset >= aNewOffset )
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{
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//set this latter value up so it has at least as high a value as the
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//previous stop offsets
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aStopEl->iOffset = OldOffset;
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if (aStopEl->iOffset == TFloatFixPt(0))
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{
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aStopEl->iOffset += TFloatFixPt(.001f);
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}
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else
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{
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//two stop offsets have the same value now so make the one before ever so slightly less
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//the latter one will control the "overlap point"
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OldOffset -= TFloatFixPt(.001f);
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}
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iSvgStopElementArray->operator[](i)->iOffset = OldOffset;
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}
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}
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}
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// ---------------------------------------------------------------------------
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// The function not only adds the element in Stop element array but also
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// adjusts the offset values of all the previously added elements such that
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// each gradient offset value is greater than the previous gradient stop's
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// offset value.
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// ---------------------------------------------------------------------------
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void CSvgGradientElementImpl::AddStopElementInArray(CSvgStopElementImpl *aStopEl)
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{
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TBool lFound = EFalse;
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TInt err = iSvgStopElementArray->Find(aStopEl);
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if( err != KErrNotFound )
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{
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lFound = ETrue;
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}
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if(!lFound)
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{
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iSvgStopElementArray->Append(aStopEl);
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UpdateOffsetValues(aStopEl);
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}
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}
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void CSvgGradientElementImpl::SetGradientTransMatrix(SVGReal aMatrix[2][3])
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{
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TGfxAffineTransform tempTransform;
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MSvgTransformList* trList;
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GetTransform( trList );
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TGfxAffineTransform originalTransform = trList->GetItem( 0 );
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tempTransform.iM00.iValue = aMatrix[0][0];
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tempTransform.iM01.iValue = aMatrix[0][1];
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tempTransform.iM02.iValue = aMatrix[0][2];
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tempTransform.iM10.iValue = aMatrix[1][0];
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tempTransform.iM11.iValue = aMatrix[1][1];
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tempTransform.iM12.iValue = aMatrix[1][2];
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TUint32 lTransType = KTransformIdentity;
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TFloatFixPt KZero;
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TFloatFixPt KOne( KFloatFixOne );
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if ( tempTransform.iM02 != KZero || tempTransform.iM12 != KZero )
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lTransType |= KTransformTranslate;
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if ( tempTransform.iM00 != KZero || tempTransform.iM11 != KZero )
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lTransType |= KTransformScale;
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if ( tempTransform.iM01 != KZero || tempTransform.iM10 != KZero )
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lTransType |= KTransformShear;
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if ( (int)lTransType == KTransformScale &&
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tempTransform.iM00 == KOne && tempTransform.iM11 == KOne )
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lTransType = KTransformIdentity;
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tempTransform.iTransType = lTransType;
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originalTransform.Concatenate( tempTransform );
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trList->ReplaceItem( originalTransform, 0 );
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}
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