#ifndef RasterShape_h
#define RasterShape_h
#include "FloatRect.h"
#include "Shape.h"
#include "ShapeInterval.h"
#include <wtf/Assertions.h>
#include <wtf/Vector.h>
namespace WebCore {
class RasterShapeIntervals {
public:
RasterShapeIntervals(unsigned size, int offset = 0)
: m_offset(offset)
{
m_intervals.resize(clampTo<int>(size));
}
void initializeBounds();
const IntRect& bounds() const { return m_bounds; }
bool isEmpty() const { return m_bounds.isEmpty(); }
IntShapeInterval& intervalAt(int y)
{
ASSERT(y + m_offset >= 0 && static_cast<unsigned>(y + m_offset) < m_intervals.size());
return m_intervals[y + m_offset];
}
const IntShapeInterval& intervalAt(int y) const
{
ASSERT(y + m_offset >= 0 && static_cast<unsigned>(y + m_offset) < m_intervals.size());
return m_intervals[y + m_offset];
}
std::unique_ptr<RasterShapeIntervals> computeShapeMarginIntervals(int shapeMargin) const;
void buildBoundsPath(Path&) const;
private:
int size() const { return m_intervals.size(); }
int offset() const { return m_offset; }
int minY() const { return -m_offset; }
int maxY() const { return -m_offset + m_intervals.size(); }
IntRect m_bounds;
Vector<IntShapeInterval> m_intervals;
int m_offset;
};
class RasterShape : public Shape {
WTF_MAKE_NONCOPYABLE(RasterShape);
public:
RasterShape(std::unique_ptr<RasterShapeIntervals> intervals, const IntSize& marginRectSize)
: m_intervals(WTF::move(intervals))
, m_marginRectSize(marginRectSize)
{
m_intervals->initializeBounds();
}
virtual LayoutRect shapeMarginLogicalBoundingBox() const override { return static_cast<LayoutRect>(marginIntervals().bounds()); }
virtual bool isEmpty() const override { return m_intervals->isEmpty(); }
virtual void getExcludedIntervals(LayoutUnit logicalTop, LayoutUnit logicalHeight, SegmentList&) const override;
virtual void buildDisplayPaths(DisplayPaths& paths) const override
{
m_intervals->buildBoundsPath(paths.shape);
if (shapeMargin())
marginIntervals().buildBoundsPath(paths.marginShape);
}
private:
const RasterShapeIntervals& marginIntervals() const;
std::unique_ptr<RasterShapeIntervals> m_intervals;
mutable std::unique_ptr<RasterShapeIntervals> m_marginIntervals;
IntSize m_marginRectSize;
};
}
#endif // RasterShape_h