RenderSVGResourceFilter.h [plain text]
#pragma once
#include "ImageBuffer.h"
#include "RenderSVGResourceContainer.h"
#include "SVGFilter.h"
#include "SVGFilterBuilder.h"
#include "SVGFilterElement.h"
#include "SVGUnitTypes.h"
#include <wtf/RefPtr.h>
namespace WebCore {
struct FilterData {
WTF_MAKE_FAST_ALLOCATED;
WTF_MAKE_NONCOPYABLE(FilterData);
public:
enum FilterDataState { PaintingSource, Applying, Built, CycleDetected, MarkedForRemoval };
FilterData()
: savedContext(0)
, state(PaintingSource)
{
}
RefPtr<SVGFilter> filter;
std::unique_ptr<SVGFilterBuilder> builder;
std::unique_ptr<ImageBuffer> sourceGraphicBuffer;
GraphicsContext* savedContext;
AffineTransform shearFreeAbsoluteTransform;
FloatRect boundaries;
FloatRect drawingRegion;
FloatSize scale;
FilterDataState state;
};
class GraphicsContext;
class RenderSVGResourceFilter final : public RenderSVGResourceContainer {
public:
RenderSVGResourceFilter(SVGFilterElement&, RenderStyle&&);
virtual ~RenderSVGResourceFilter();
SVGFilterElement& filterElement() const { return downcast<SVGFilterElement>(RenderSVGResourceContainer::element()); }
void removeAllClientsFromCache(bool markForInvalidation = true) override;
void removeClientFromCache(RenderElement&, bool markForInvalidation = true) override;
bool applyResource(RenderElement&, const RenderStyle&, GraphicsContext*&, unsigned short resourceMode) override;
void postApplyResource(RenderElement&, GraphicsContext*&, unsigned short resourceMode, const Path*, const RenderSVGShape*) override;
FloatRect resourceBoundingBox(const RenderObject&) override;
std::unique_ptr<SVGFilterBuilder> buildPrimitives(SVGFilter&) const;
SVGUnitTypes::SVGUnitType filterUnits() const { return filterElement().filterUnits(); }
SVGUnitTypes::SVGUnitType primitiveUnits() const { return filterElement().primitiveUnits(); }
void primitiveAttributeChanged(RenderObject*, const QualifiedName&);
RenderSVGResourceType resourceType() const override { return FilterResourceType; }
FloatRect drawingRegion(RenderObject*) const;
private:
void element() const = delete;
const char* renderName() const override { return "RenderSVGResourceFilter"; }
bool isSVGResourceFilter() const override { return true; }
HashMap<RenderObject*, std::unique_ptr<FilterData>> m_filter;
};
}
SPECIALIZE_TYPE_TRAITS_BEGIN(WebCore::RenderSVGResourceFilter)
static bool isType(const WebCore::RenderObject& renderer) { return renderer.isSVGResourceFilter(); }
static bool isType(const WebCore::RenderSVGResource& resource) { return resource.resourceType() == WebCore::FilterResourceType; }
SPECIALIZE_TYPE_TRAITS_END()