/* | |
* Copyright (C) 2006, 2007, 2008 Apple Inc. All rights reserved. | |
* Copyright (C) 2007 Alp Toker <alp@atoker.com> | |
* Copyright (C) 2008 Torch Mobile, Inc. | |
* | |
* 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 Gradient_h | |
#define Gradient_h | |
#include "AffineTransform.h" | |
#include "FloatPoint.h" | |
#include "Generator.h" | |
#include "GraphicsTypes.h" | |
#include <wtf/PassRefPtr.h> | |
#include <wtf/Vector.h> | |
#if PLATFORM(CG) | |
#define USE_CG_SHADING defined(BUILDING_ON_TIGER) || defined(BUILDING_ON_LEOPARD) | |
#if USE_CG_SHADING | |
typedef struct CGShading* CGShadingRef; | |
typedef CGShadingRef PlatformGradient; | |
#else | |
typedef struct CGGradient* CGGradientRef; | |
typedef CGGradientRef PlatformGradient; | |
#endif | |
#elif PLATFORM(QT) | |
QT_BEGIN_NAMESPACE | |
class QGradient; | |
QT_END_NAMESPACE | |
typedef QGradient* PlatformGradient; | |
#elif PLATFORM(CAIRO) | |
typedef struct _cairo_pattern cairo_pattern_t; | |
typedef cairo_pattern_t* PlatformGradient; | |
#elif PLATFORM(SKIA) | |
class SkShader; | |
typedef class SkShader* PlatformGradient; | |
typedef class SkShader* PlatformPattern; | |
#elif PLATFORM(HAIKU) | |
class BGradient; | |
typedef BGradient* PlatformGradient; | |
#else | |
typedef void* PlatformGradient; | |
#endif | |
namespace WebCore { | |
class Color; | |
class Gradient : public Generator { | |
public: | |
static PassRefPtr<Gradient> create(const FloatPoint& p0, const FloatPoint& p1) | |
{ | |
return adoptRef(new Gradient(p0, p1)); | |
} | |
static PassRefPtr<Gradient> create(const FloatPoint& p0, float r0, const FloatPoint& p1, float r1) | |
{ | |
return adoptRef(new Gradient(p0, r0, p1, r1)); | |
} | |
virtual ~Gradient(); | |
void addColorStop(float, const Color&); | |
void getColor(float value, float* r, float* g, float* b, float* a) const; | |
#if OS(WINCE) && !PLATFORM(QT) | |
const FloatPoint& p0() const { return m_p0; } | |
const FloatPoint& p1() const { return m_p1; } | |
float r0() const { return m_r0; } | |
float r1() const { return m_r1; } | |
bool isRadial() const { return m_radial; } | |
struct ColorStop; | |
const Vector<ColorStop>& getStops() const; | |
#else | |
PlatformGradient platformGradient(); | |
#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) { } | |
}; | |
void setStopsSorted(bool s) { m_stopsSorted = s; } | |
void setSpreadMethod(GradientSpreadMethod); | |
GradientSpreadMethod spreadMethod() { return m_spreadMethod; } | |
void setGradientSpaceTransform(const AffineTransform& gradientSpaceTransformation); | |
// Qt and CG transform the gradient at draw time | |
AffineTransform gradientSpaceTransform() { return m_gradientSpaceTransformation; } | |
virtual void fill(GraphicsContext*, const FloatRect&); | |
virtual void adjustParametersForTiledDrawing(IntSize& size, FloatRect& srcRect); | |
void setPlatformGradientSpaceTransform(const AffineTransform& gradientSpaceTransformation); | |
#if PLATFORM(CG) | |
void paint(GraphicsContext*); | |
#endif | |
private: | |
Gradient(const FloatPoint& p0, const FloatPoint& p1); | |
Gradient(const FloatPoint& p0, float r0, const FloatPoint& p1, float r1); | |
void platformInit() { m_gradient = 0; } | |
void platformDestroy(); | |
int findStop(float value) const; | |
void sortStopsIfNecessary(); | |
bool m_radial; | |
FloatPoint m_p0; | |
FloatPoint m_p1; | |
float m_r0; | |
float m_r1; | |
mutable Vector<ColorStop> m_stops; | |
mutable bool m_stopsSorted; | |
mutable int m_lastStop; | |
GradientSpreadMethod m_spreadMethod; | |
AffineTransform m_gradientSpaceTransformation; | |
PlatformGradient m_gradient; | |
}; | |
} //namespace | |
#endif |