PerspectiveTransformOperation.h [plain text]
#ifndef PerspectiveTransformOperation_h
#define PerspectiveTransformOperation_h
#include "Length.h"
#include "TransformOperation.h"
namespace WebCore {
class PerspectiveTransformOperation : public TransformOperation {
public:
static PassRefPtr<PerspectiveTransformOperation> create(const Length& p)
{
return adoptRef(new PerspectiveTransformOperation(p));
}
Length perspective() const { return m_p; }
private:
virtual bool isIdentity() const { return m_p.calcFloatValue(1) == 0; }
virtual OperationType getOperationType() const { return PERSPECTIVE; }
virtual bool isSameType(const TransformOperation& o) const { return o.getOperationType() == PERSPECTIVE; }
virtual bool operator==(const TransformOperation& o) const
{
if (!isSameType(o))
return false;
const PerspectiveTransformOperation* p = static_cast<const PerspectiveTransformOperation*>(&o);
return m_p == p->m_p;
}
virtual bool apply(TransformationMatrix& transform, const IntSize&) const
{
transform.applyPerspective(m_p.calcFloatValue(1));
return false;
}
virtual PassRefPtr<TransformOperation> blend(const TransformOperation* from, double progress, bool blendToIdentity = false);
PerspectiveTransformOperation(const Length& p)
: m_p(p)
{
ASSERT(p.isFixed());
}
Length m_p;
};
}
#endif // PerspectiveTransformOperation_h