| /* |
| * 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 |