1 /* 2 * Copyright (C) 2003-6 Apple Computer, Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26 #ifndef Color_h 27 #define Color_h 28 29 #include <wtf/FastAllocBase.h> 30 #include <wtf/Platform.h> 31 32 #if PLATFORM(CG) 33 typedef struct CGColor* CGColorRef; 34 #endif 35 36 #if PLATFORM(QT) 37 #include <qglobal.h> 38 QT_BEGIN_NAMESPACE 39 class QColor; 40 QT_END_NAMESPACE 41 #endif 42 43 #if PLATFORM(GTK) 44 typedef struct _GdkColor GdkColor; 45 #endif 46 47 #if PLATFORM(WX) 48 class wxColour; 49 #endif 50 51 #if PLATFORM(HAIKU) 52 struct rgb_color; 53 #endif 54 55 namespace WebCore { 56 57 class String; 58 class Color; 59 60 typedef unsigned RGBA32; // RGBA quadruplet 61 62 RGBA32 makeRGB(int r, int g, int b); 63 RGBA32 makeRGBA(int r, int g, int b, int a); 64 65 RGBA32 colorWithOverrideAlpha(RGBA32 color, float overrideAlpha); 66 RGBA32 makeRGBA32FromFloats(float r, float g, float b, float a); 67 RGBA32 makeRGBAFromHSLA(double h, double s, double l, double a); 68 RGBA32 makeRGBAFromCMYKA(float c, float m, float y, float k, float a); 69 70 int differenceSquared(const Color&, const Color&); 71 72 class Color : public FastAllocBase { 73 public: 74 Color() : m_color(0), m_valid(false) { } 75 Color(RGBA32 col) : m_color(col), m_valid(true) { } 76 Color(int r, int g, int b) : m_color(makeRGB(r, g, b)), m_valid(true) { } 77 Color(int r, int g, int b, int a) : m_color(makeRGBA(r, g, b, a)), m_valid(true) { } 78 // Color is currently limited to 32bit RGBA, perhaps some day we'll support better colors 79 Color(float r, float g, float b, float a) : m_color(makeRGBA32FromFloats(r, g, b, a)), m_valid(true) { } 80 // Creates a new color from the specific CMYK and alpha values. 81 Color(float c, float m, float y, float k, float a) : m_color(makeRGBAFromCMYKA(c, m, y, k, a)), m_valid(true) { } 82 explicit Color(const String&); 83 explicit Color(const char*); 84 85 String name() const; 86 void setNamedColor(const String&); 87 88 bool isValid() const { return m_valid; } 89 90 bool hasAlpha() const { return alpha() < 255; } 91 92 int red() const { return (m_color >> 16) & 0xFF; } 93 int green() const { return (m_color >> 8) & 0xFF; } 94 int blue() const { return m_color & 0xFF; } 95 int alpha() const { return (m_color >> 24) & 0xFF; } 96 97 RGBA32 rgb() const { return m_color; } // Preserve the alpha. 98 void setRGB(int r, int g, int b) { m_color = makeRGB(r, g, b); m_valid = true; } 99 void setRGB(RGBA32 rgb) { m_color = rgb; m_valid = true; } 100 void getRGBA(float& r, float& g, float& b, float& a) const; 101 void getRGBA(double& r, double& g, double& b, double& a) const; 102 void getHSL(double& h, double& s, double& l) const; 103 104 Color light() const; 105 Color dark() const; 106 107 Color blend(const Color&) const; 108 Color blendWithWhite() const; 109 110 #if PLATFORM(QT) 111 Color(const QColor&); 112 operator QColor() const; 113 #endif 114 115 #if PLATFORM(GTK) 116 Color(const GdkColor&); 117 // We can't sensibly go back to GdkColor without losing the alpha value 118 #endif 119 120 #if PLATFORM(WX) 121 Color(const wxColour&); 122 operator wxColour() const; 123 #endif 124 125 #if PLATFORM(CG) 126 Color(CGColorRef); 127 #endif 128 129 #if PLATFORM(HAIKU) 130 Color(const rgb_color&); 131 operator rgb_color() const; 132 #endif 133 134 static bool parseHexColor(const String& name, RGBA32& rgb); 135 136 static const RGBA32 black = 0xFF000000; 137 static const RGBA32 white = 0xFFFFFFFF; 138 static const RGBA32 darkGray = 0xFF808080; 139 static const RGBA32 gray = 0xFFA0A0A0; 140 static const RGBA32 lightGray = 0xFFC0C0C0; 141 static const RGBA32 transparent = 0x00000000; 142 143 #ifdef ANDROID_CSS_TAP_HIGHLIGHT_COLOR 144 static const RGBA32 tap = 0x4D1A1A1A; 145 #endif 146 147 private: 148 RGBA32 m_color; 149 bool m_valid; 150 }; 151 152 inline bool operator==(const Color& a, const Color& b) 153 { 154 return a.rgb() == b.rgb() && a.isValid() == b.isValid(); 155 } 156 157 inline bool operator!=(const Color& a, const Color& b) 158 { 159 return !(a == b); 160 } 161 162 Color colorFromPremultipliedARGB(unsigned); 163 unsigned premultipliedARGBFromColor(const Color&); 164 165 #if PLATFORM(CG) 166 CGColorRef createCGColor(const Color&); 167 #endif 168 169 } // namespace WebCore 170 171 #endif // Color_h 172
