uiacceltk/hitchcock/coretoolkit/rendervg10/src/HuiFxVg10ColorMatrixFilterBase.cpp
/*
* Copyright (c) 2008 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: Basic functionality of color matrix based filters.
*
*/
#include "HuiFxVg10ColorMatrixFilterBase.h"
CHuiFxVg10ColorMatrixFilterBase* CHuiFxVg10ColorMatrixFilterBase::NewL()
{
CHuiFxVg10ColorMatrixFilterBase* e = new (ELeave) CHuiFxVg10ColorMatrixFilterBase();
CleanupStack::PushL(e);
e->ConstructL();
CleanupStack::Pop(e);
return e;
}
void CHuiFxVg10ColorMatrixFilterBase::ConstructL()
{
CHuiFxVg10FilterBase::ConstructL();
memset(iColorMatrix, 0, sizeof(iColorMatrix));
}
CHuiFxVg10ColorMatrixFilterBase *CHuiFxVg10ColorMatrixFilterBase::CloneL() const
{
CHuiFxVg10ColorMatrixFilterBase *filter = new(ELeave)CHuiFxVg10ColorMatrixFilterBase;
filter->CopyFromL(this);
return filter;
}
void CHuiFxVg10ColorMatrixFilterBase::CopyFromL(const CHuiFxVg10ColorMatrixFilterBase *aOldFilter)
{
CHuiFxVg10FilterBase::CopyFromL(aOldFilter);
memcpy(iColorMatrix, aOldFilter->iColorMatrix, sizeof(iColorMatrix));
}
void CHuiFxVg10ColorMatrixFilterBase::DrawEffect(CHuiFxEngine& /*aEngine*/, VGImage aTargetImage, VGImage aSourceImage, TInt aWidth, TInt aHeight )
{
// take opacity into account
const VGfloat opacity = clamp(iOpacity, 0.0f, 1.0f);
if(opacity > EPSILON)
{
if(ParameterChanged())
{
UpdateColorMatrix();
}
vgColorMatrix(aTargetImage, aSourceImage, iColorMatrix);
}
else
{
// VGint width = vgGetParameteri(aSourceImage, VG_IMAGE_WIDTH);
// VGint height = vgGetParameteri(aSourceImage, VG_IMAGE_HEIGHT);
VGint width = aWidth;
VGint height = aHeight;
vgCopyImage(aTargetImage, 0, 0, aSourceImage, 0, 0, width, height, VG_FALSE);
}
}
// this is supposed to be overloaded by child classes
void CHuiFxVg10ColorMatrixFilterBase::UpdateColorMatrix()
{
}