SVGResourceClipper.cpp [plain text]
#include "config.h"
#if ENABLE(SVG)
#include "SVGResourceClipper.h"
#include "TransformationMatrix.h"
#include "GraphicsContext.h"
#include "SVGRenderTreeAsText.h"
#if PLATFORM(CG)
#include <CoreGraphics/CoreGraphics.h>
#endif
namespace WebCore {
SVGResourceClipper::SVGResourceClipper()
: SVGResource()
{
}
SVGResourceClipper::~SVGResourceClipper()
{
}
void SVGResourceClipper::resetClipData()
{
m_clipData.clear();
}
void SVGResourceClipper::applyClip(GraphicsContext* context, const FloatRect& boundingBox) const
{
if (m_clipData.clipData().isEmpty())
return;
bool heterogenousClipRules = false;
WindRule clipRule = m_clipData.clipData()[0].windRule;
context->beginPath();
for (unsigned x = 0; x < m_clipData.clipData().size(); x++) {
ClipData clipData = m_clipData.clipData()[x];
if (clipData.windRule != clipRule)
heterogenousClipRules = true;
Path clipPath = clipData.path;
if (clipData.bboxUnits) {
TransformationMatrix transform;
transform.translate(boundingBox.x(), boundingBox.y());
transform.scaleNonUniform(boundingBox.width(), boundingBox.height());
clipPath.transform(transform);
}
context->addPath(clipPath);
}
context->clipPath(clipRule);
}
void SVGResourceClipper::addClipData(const Path& path, WindRule rule, bool bboxUnits)
{
m_clipData.addPath(path, rule, bboxUnits);
}
const ClipDataList& SVGResourceClipper::clipData() const
{
return m_clipData;
}
TextStream& SVGResourceClipper::externalRepresentation(TextStream& ts) const
{
ts << "[type=CLIPPER]";
ts << " [clip data=" << clipData().clipData() << "]";
return ts;
}
TextStream& operator<<(TextStream& ts, WindRule rule)
{
switch (rule) {
case RULE_NONZERO:
ts << "NON-ZERO"; break;
case RULE_EVENODD:
ts << "EVEN-ODD"; break;
}
return ts;
}
TextStream& operator<<(TextStream& ts, const ClipData& d)
{
ts << "[winding=" << d.windRule << "]";
if (d.bboxUnits)
ts << " [bounding box mode=" << d.bboxUnits << "]";
ts << " [path=" << d.path.debugString() << "]";
return ts;
}
SVGResourceClipper* getClipperById(Document* document, const AtomicString& id)
{
SVGResource* resource = getResourceById(document, id);
if (resource && resource->isClipper())
return static_cast<SVGResourceClipper*>(resource);
return 0;
}
}
#endif