void FEComposite::apply(Filter* filter)
{
m_in->apply(filter);
m_in2->apply(filter);
if (!m_in->resultImage() || !m_in2->resultImage())
return;
GraphicsContext* filterContext = getEffectContext();
if (!filterContext)
return;
FloatRect srcRect = FloatRect(0.f, 0.f, -1.f, -1.f);
switch (m_type) {
case FECOMPOSITE_OPERATOR_OVER:
filterContext->drawImageBuffer(m_in2->resultImage(), DeviceColorSpace, calculateDrawingRect(m_in2->scaledSubRegion()));
filterContext->drawImageBuffer(m_in->resultImage(), DeviceColorSpace, calculateDrawingRect(m_in->scaledSubRegion()));
break;
case FECOMPOSITE_OPERATOR_IN:
filterContext->save();
filterContext->clipToImageBuffer(m_in2->resultImage(), calculateDrawingRect(m_in2->scaledSubRegion()));
filterContext->drawImageBuffer(m_in->resultImage(), DeviceColorSpace, calculateDrawingRect(m_in->scaledSubRegion()));
filterContext->restore();
break;
case FECOMPOSITE_OPERATOR_OUT:
filterContext->drawImageBuffer(m_in->resultImage(), DeviceColorSpace, calculateDrawingRect(m_in->scaledSubRegion()));
filterContext->drawImageBuffer(m_in2->resultImage(), DeviceColorSpace, calculateDrawingRect(m_in2->scaledSubRegion()), srcRect, CompositeDestinationOut);
break;
case FECOMPOSITE_OPERATOR_ATOP:
filterContext->drawImageBuffer(m_in2->resultImage(), DeviceColorSpace, calculateDrawingRect(m_in2->scaledSubRegion()));
filterContext->drawImageBuffer(m_in->resultImage(), DeviceColorSpace, calculateDrawingRect(m_in->scaledSubRegion()), srcRect, CompositeSourceAtop);
break;
case FECOMPOSITE_OPERATOR_XOR:
filterContext->drawImageBuffer(m_in2->resultImage(), DeviceColorSpace, calculateDrawingRect(m_in2->scaledSubRegion()));
filterContext->drawImageBuffer(m_in->resultImage(), DeviceColorSpace, calculateDrawingRect(m_in->scaledSubRegion()), srcRect, CompositeXOR);
break;
case FECOMPOSITE_OPERATOR_ARITHMETIC: {
IntRect effectADrawingRect = calculateDrawingIntRect(m_in->scaledSubRegion());
RefPtr<CanvasPixelArray> srcPixelArrayA(m_in->resultImage()->getPremultipliedImageData(effectADrawingRect)->data());
IntRect effectBDrawingRect = calculateDrawingIntRect(m_in2->scaledSubRegion());
RefPtr<ImageData> imageData(m_in2->resultImage()->getPremultipliedImageData(effectBDrawingRect));
CanvasPixelArray* srcPixelArrayB(imageData->data());
arithmetic(srcPixelArrayA, srcPixelArrayB, m_k1, m_k2, m_k3, m_k4);
resultImage()->putPremultipliedImageData(imageData.get(), IntRect(IntPoint(), resultImage()->size()), IntPoint());
}
break;
default:
break;
}
}
void FEColorMatrix::apply(Filter* filter)
{
m_in->apply(filter);
if (!m_in->resultImage())
return;
GraphicsContext* filterContext = getEffectContext();
if (!filterContext)
return;
filterContext->drawImage(m_in->resultImage()->image(), calculateDrawingRect(m_in->subRegion()));
IntRect imageRect(IntPoint(), resultImage()->size());
PassRefPtr<ImageData> imageData(resultImage()->getUnmultipliedImageData(imageRect));
PassRefPtr<CanvasPixelArray> srcPixelArray(imageData->data());
switch (m_type) {
case FECOLORMATRIX_TYPE_UNKNOWN:
break;
case FECOLORMATRIX_TYPE_MATRIX:
effectType<FECOLORMATRIX_TYPE_MATRIX>(srcPixelArray, imageData, m_values);
break;
case FECOLORMATRIX_TYPE_SATURATE:
effectType<FECOLORMATRIX_TYPE_SATURATE>(srcPixelArray, imageData, m_values);
break;
case FECOLORMATRIX_TYPE_HUEROTATE:
effectType<FECOLORMATRIX_TYPE_HUEROTATE>(srcPixelArray, imageData, m_values);
break;
case FECOLORMATRIX_TYPE_LUMINANCETOALPHA:
effectType<FECOLORMATRIX_TYPE_LUMINANCETOALPHA>(srcPixelArray, imageData, m_values);
break;
}
resultImage()->putUnmultipliedImageData(imageData.get(), imageRect, IntPoint());
}
void FEMerge::apply(Filter* filter)
{
ASSERT(!m_mergeInputs.isEmpty());
for (unsigned i = 0; i < m_mergeInputs.size(); i++) {
m_mergeInputs[i]->apply(filter);
if (!m_mergeInputs[i]->resultImage())
return;
}
GraphicsContext* filterContext = getEffectContext();
if (!filterContext)
return;
for (unsigned i = 0; i < m_mergeInputs.size(); i++) {
FloatRect destRect = calculateDrawingRect(m_mergeInputs[i]->scaledSubRegion());
filterContext->drawImageBuffer(m_mergeInputs[i]->resultImage(), DeviceColorSpace, destRect);
}
}
