sk_sp<SkImageFilter> FEImage::createImageFilter()
{
if (auto* layoutObject = referencedLayoutObject())
return createImageFilterForLayoutObject(*layoutObject);
sk_sp<SkImage> image = m_image ? toSkSp(m_image->imageForCurrentFrame()) : nullptr;
if (!image) {
// "A href reference that is an empty image (zero width or zero height), that fails
// to download, is non-existent, or that cannot be displayed (e.g. because it is
// not in a supported image format) fills the filter primitive subregion with
// transparent black."
return createTransparentBlack();
}
FloatRect srcRect = FloatRect(FloatPoint(), FloatSize(m_image->size()));
FloatRect dstRect = filterPrimitiveSubregion();
m_preserveAspectRatio->transformRect(dstRect, srcRect);
return SkImageSource::Make(std::move(image), srcRect, dstRect, kHigh_SkFilterQuality);
}
PassRefPtr<SkImageFilter> FEImage::createImageFilter(SkiaImageFilterBuilder* builder)
{
if (auto* layoutObject = referencedLayoutObject())
return createImageFilterForLayoutObject(*layoutObject, builder);
FloatRect dstRect = filterPrimitiveSubregion();
RefPtr<SkImage> image = m_image ? m_image->imageForCurrentFrame() : nullptr;
if (!image) {
// "A href reference that is an empty image (zero width or zero height), that fails
// to download, is non-existent, or that cannot be displayed (e.g. because it is
// not in a supported image format) fills the filter primitive subregion with
// transparent black."
return adoptRef(SkPictureImageFilter::Create(nullptr, dstRect));
}
FloatRect srcRect = FloatRect(FloatPoint(), m_image->size());
m_preserveAspectRatio->transformRect(dstRect, srcRect);
return adoptRef(SkImageSource::Create(image.get(), srcRect, dstRect, kHigh_SkFilterQuality));
}
