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/*
* Copyright (C) 2006 Apple Computer, Inc. All rights reserved.
* Copyright (C) 2007 Alp Toker <alp@atoker.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef CanvasGradient_h
#define CanvasGradient_h
#include "FloatPoint.h"
#include <wtf/RefCounted.h>
#include <wtf/Vector.h>
#ifdef ANDROID_CANVAS_IMPL
#include "graphics/PlatformGraphics.h"
#endif
#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);
#ifdef ANDROID_CANVAS_IMPL
PlatformGradient* platformGradient();
#endif
#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
#ifdef ANDROID_CANVAS_IMPL
PlatformGradient* m_platformGradient;
#endif
};
} //namespace
#endif
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