#include "config.h"
#include "SVGFEImage.h"
#include "AffineTransform.h"
#include "Filter.h"
#include "GraphicsContext.h"
#include "RenderElement.h"
#include "RenderTreeAsText.h"
#include "SVGElement.h"
#include "SVGRenderingContext.h"
#include "SVGURIReference.h"
#include <wtf/text/TextStream.h>
namespace WebCore {
FEImage::FEImage(Filter& filter, RefPtr<Image> image, const SVGPreserveAspectRatioValue& preserveAspectRatio)
: FilterEffect(filter)
, m_image(image)
, m_preserveAspectRatio(preserveAspectRatio)
{
}
FEImage::FEImage(Filter& filter, TreeScope& treeScope, const String& href, const SVGPreserveAspectRatioValue& preserveAspectRatio)
: FilterEffect(filter)
, m_treeScope(&treeScope)
, m_href(href)
, m_preserveAspectRatio(preserveAspectRatio)
{
}
Ref<FEImage> FEImage::createWithImage(Filter& filter, RefPtr<Image> image, const SVGPreserveAspectRatioValue& preserveAspectRatio)
{
return adoptRef(*new FEImage(filter, image, preserveAspectRatio));
}
Ref<FEImage> FEImage::createWithIRIReference(Filter& filter, TreeScope& treeScope, const String& href, const SVGPreserveAspectRatioValue& preserveAspectRatio)
{
return adoptRef(*new FEImage(filter, treeScope, href, preserveAspectRatio));
}
void FEImage::determineAbsolutePaintRect()
{
FloatRect paintRect = filter().absoluteTransform().mapRect(filterPrimitiveSubregion());
FloatRect srcRect;
if (m_image) {
srcRect.setSize(m_image->size());
m_preserveAspectRatio.transformRect(paintRect, srcRect);
} else if (RenderElement* renderer = referencedRenderer())
srcRect = filter().absoluteTransform().mapRect(renderer->repaintRectInLocalCoordinates());
if (clipsToBounds())
paintRect.intersect(maxEffectRect());
else
paintRect.unite(maxEffectRect());
setAbsolutePaintRect(enclosingIntRect(paintRect));
}
RenderElement* FEImage::referencedRenderer() const
{
if (!m_treeScope)
return nullptr;
auto target = SVGURIReference::targetElementFromIRIString(m_href, *m_treeScope);
if (!is<SVGElement>(target.element))
return nullptr;
return target.element->renderer();
}
void FEImage::platformApplySoftware()
{
RenderElement* renderer = referencedRenderer();
if (!m_image && !renderer)
return;
setResultColorSpace(ColorSpace::SRGB);
ImageBuffer* resultImage = createImageBufferResult();
if (!resultImage)
return;
FloatRect destRect = filter().absoluteTransform().mapRect(filterPrimitiveSubregion());
FloatRect srcRect;
if (renderer)
srcRect = filter().absoluteTransform().mapRect(renderer->repaintRectInLocalCoordinates());
else {
srcRect = FloatRect(FloatPoint(), m_image->size());
m_preserveAspectRatio.transformRect(destRect, srcRect);
}
IntPoint paintLocation = absolutePaintRect().location();
destRect.move(-paintLocation.x(), -paintLocation.y());
if (renderer) {
const AffineTransform& absoluteTransform = filter().absoluteTransform();
resultImage->context().concatCTM(absoluteTransform);
auto contextNode = makeRefPtr(downcast<SVGElement>(renderer->element()));
if (contextNode->hasRelativeLengths()) {
SVGLengthContext lengthContext(contextNode.get());
FloatSize viewportSize;
if (lengthContext.determineViewport(viewportSize))
resultImage->context().concatCTM(makeMapBetweenRects(FloatRect(FloatPoint(), viewportSize), destRect));
}
AffineTransform contentTransformation;
SVGRenderingContext::renderSubtreeToImageBuffer(resultImage, *renderer, contentTransformation);
return;
}
resultImage->context().drawImage(*m_image, destRect, srcRect);
}
TextStream& FEImage::externalRepresentation(TextStream& ts, RepresentationType representation) const
{
FloatSize imageSize;
if (m_image)
imageSize = m_image->size();
else if (RenderObject* renderer = referencedRenderer())
imageSize = enclosingIntRect(renderer->repaintRectInLocalCoordinates()).size();
ts << indent << "[feImage";
FilterEffect::externalRepresentation(ts, representation);
ts << " image-size=\"" << imageSize.width() << "x" << imageSize.height() << "\"]\n";
return ts;
}
}