RenderSVGResourceFilter.h [plain text]
#ifndef RenderSVGResourceFilter_h
#define RenderSVGResourceFilter_h
#if ENABLE(SVG) && ENABLE(FILTERS)
#include "FloatRect.h"
#include "ImageBuffer.h"
#include "RenderSVGResourceContainer.h"
#include "SVGFilter.h"
#include "SVGFilterBuilder.h"
#include "SVGFilterElement.h"
#include "SVGUnitTypes.h"
#include <wtf/OwnPtr.h>
#include <wtf/PassOwnPtr.h>
#include <wtf/RefPtr.h>
namespace WebCore {
struct FilterData {
WTF_MAKE_FAST_ALLOCATED;
public:
enum FilterDataState { PaintingSource, Applying, Built, CycleDetected, MarkedForRemoval };
FilterData()
: savedContext(0)
, state(PaintingSource)
{
}
RefPtr<SVGFilter> filter;
RefPtr<SVGFilterBuilder> builder;
OwnPtr<ImageBuffer> sourceGraphicBuffer;
GraphicsContext* savedContext;
AffineTransform shearFreeAbsoluteTransform;
FloatRect boundaries;
FloatRect drawingRegion;
FloatSize scale;
FilterDataState state;
};
class GraphicsContext;
class RenderSVGResourceFilter : public RenderSVGResourceContainer {
public:
RenderSVGResourceFilter(SVGFilterElement*);
virtual ~RenderSVGResourceFilter();
virtual const char* renderName() const { return "RenderSVGResourceFilter"; }
virtual bool isSVGResourceFilter() const OVERRIDE { return true; }
virtual void removeAllClientsFromCache(bool markForInvalidation = true);
virtual void removeClientFromCache(RenderObject*, bool markForInvalidation = true);
virtual bool applyResource(RenderObject*, RenderStyle*, GraphicsContext*&, unsigned short resourceMode);
virtual void postApplyResource(RenderObject*, GraphicsContext*&, unsigned short resourceMode, const Path*, const RenderSVGShape*);
virtual FloatRect resourceBoundingBox(RenderObject*);
PassRefPtr<SVGFilterBuilder> buildPrimitives(SVGFilter*);
SVGUnitTypes::SVGUnitType filterUnits() const { return static_cast<SVGFilterElement*>(node())->filterUnits(); }
SVGUnitTypes::SVGUnitType primitiveUnits() const { return static_cast<SVGFilterElement*>(node())->primitiveUnits(); }
void primitiveAttributeChanged(RenderObject*, const QualifiedName&);
virtual RenderSVGResourceType resourceType() const { return s_resourceType; }
static RenderSVGResourceType s_resourceType;
FloatRect drawingRegion(RenderObject*) const;
private:
bool fitsInMaximumImageSize(const FloatSize&, FloatSize&);
HashMap<RenderObject*, FilterData*> m_filter;
};
inline RenderSVGResourceFilter* toRenderSVGFilter(RenderObject* object)
{
ASSERT_WITH_SECURITY_IMPLICATION(!object || object->isSVGResourceFilter());
return static_cast<RenderSVGResourceFilter*>(object);
}
}
#endif
#endif