#ifndef CanvasGradient_h
#define CanvasGradient_h
#include "FloatPoint.h"
#include <wtf/RefCounted.h>
#include <wtf/Vector.h>
#if PLATFORM(CG)
typedef struct CGShading* CGShadingRef;
#elif PLATFORM(QT)
class QGradient;
#elif PLATFORM(CAIRO)
typedef struct _cairo_pattern cairo_pattern_t;
#endif
namespace WebCore {
class String;
class CanvasGradient : public RefCounted<CanvasGradient> {
public:
CanvasGradient(const FloatPoint& p0, const FloatPoint& p1);
CanvasGradient(const FloatPoint& p0, float r0, const FloatPoint& p1, float r1);
~CanvasGradient();
void addColorStop(float, const String& color);
void getColor(float value, float* r, float* g, float* b, float* a);
#if PLATFORM(CG)
CGShadingRef platformShading();
#elif PLATFORM(QT)
QGradient *platformShading();
#elif PLATFORM(CAIRO)
cairo_pattern_t* platformShading();
#endif
struct ColorStop {
float stop;
float red;
float green;
float blue;
float alpha;
ColorStop() : stop(0), red(0), green(0), blue(0), alpha(0) { }
ColorStop(float s, float r, float g, float b, float a) : stop(s), red(r), green(g), blue(b), alpha(a) { }
};
private:
int findStop(float value) const;
bool m_radial;
FloatPoint m_p0, m_p1;
float m_r0, m_r1;
mutable Vector<ColorStop> m_stops;
mutable bool m_stopsSorted;
mutable int m_lastStop;
#if PLATFORM(CG)
CGShadingRef m_shading;
#elif PLATFORM(QT)
QGradient *m_shading;
#elif PLATFORM(CAIRO)
cairo_pattern_t* m_shading;
#endif
};
}
#endif