void FEGaussianBlur::platformApplySoftware()
{
FilterEffect* in = inputEffect(0);
Uint8ClampedArray* srcPixelArray = createPremultipliedImageResult();
if (!srcPixelArray)
return;
setIsAlphaImage(in->isAlphaImage());
IntRect effectDrawingRect = requestedRegionOfInputImageData(in->absolutePaintRect());
in->copyPremultipliedImage(srcPixelArray, effectDrawingRect);
if (!m_stdX && !m_stdY)
return;
IntSize kernelSize = calculateKernelSize(filter(), FloatPoint(m_stdX, m_stdY));
kernelSize.scale(filter().filterScale());
IntSize paintSize = absolutePaintRect().size();
paintSize.scale(filter().filterScale());
RefPtr<Uint8ClampedArray> tmpImageData = Uint8ClampedArray::createUninitialized((paintSize.area() * 4).unsafeGet());
if (!tmpImageData) {
WTFLogAlways("FEGaussianBlur::platformApplySoftware Unable to create buffer. Requested size was %d x %d\n", paintSize.width(), paintSize.height());
return;
}
platformApply(srcPixelArray, tmpImageData.get(), kernelSize.width(), kernelSize.height(), paintSize);
}
void BitmapImage::determineMinimumSubsamplingLevel() const
{
if (!m_allowSubsampling)
return;
if (!m_source.allowSubsamplingOfFrameAtIndex(0))
return;
// Values chosen to be appropriate for iOS.
const int cMaximumImageAreaBeforeSubsampling = 5 * 1024 * 1024;
const SubsamplingLevel maxSubsamplingLevel = 3;
SubsamplingLevel currentLevel = 0;
for ( ; currentLevel <= maxSubsamplingLevel; ++currentLevel) {
IntSize frameSize = m_source.frameSizeAtIndex(0, currentLevel);
if (frameSize.area() < cMaximumImageAreaBeforeSubsampling)
break;
}
m_minimumSubsamplingLevel = currentLevel;
}
unsigned ImageDecoder::frameBytesAtIndex(size_t index, SubsamplingLevel subsamplingLevel) const
{
IntSize frameSize = frameSizeAtIndex(index, subsamplingLevel);
return (frameSize.area() * 4).unsafeGet();
}
bool HTMLPlugInImageElement::isTopLevelFullPagePlugin(const RenderEmbeddedObject& renderer) const
{
Frame& frame = *document().frame();
if (!frame.isMainFrame())
return false;
auto& style = renderer.style();
IntSize visibleSize = frame.view()->visibleSize();
LayoutRect contentRect = renderer.contentBoxRect();
int contentWidth = contentRect.width();
int contentHeight = contentRect.height();
return is100Percent(style.width()) && is100Percent(style.height()) && contentWidth * contentHeight > visibleSize.area() * sizingFullPageAreaRatioThreshold;
}