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/Platform.h> 30 31 #if PLATFORM(CG) 32 typedef struct CGColor* CGColorRef; 33 #endif 34 35 #if PLATFORM(QT) 36 #include <qglobal.h> 37 QT_BEGIN_NAMESPACE 38 class QColor; 39 QT_END_NAMESPACE 40 #endif 41 42 #if PLATFORM(GTK) 43 typedef struct _GdkColor GdkColor; 44 #endif 45 46 #if PLATFORM(WX) 47 class wxColour; 48 #endif 49 50 namespace WebCore { 51 52 class String; 53 class Color; 54 55 typedef unsigned RGBA32; // RGBA quadruplet 56 57 RGBA32 makeRGB(int r, int g, int b); 58 RGBA32 makeRGBA(int r, int g, int b, int a); 59 60 RGBA32 colorWithOverrideAlpha(RGBA32 color, float overrideAlpha); 61 RGBA32 makeRGBA32FromFloats(float r, float g, float b, float a); 62 RGBA32 makeRGBAFromHSLA(double h, double s, double l, double a); 63 64 int differenceSquared(const Color&, const Color&); 65 66 class Color { 67 public: Color()68 Color() : m_color(0), m_valid(false) { } Color(RGBA32 col)69 Color(RGBA32 col) : m_color(col), m_valid(true) { } Color(int r,int g,int b)70 Color(int r, int g, int b) : m_color(makeRGB(r, g, b)), m_valid(true) { } Color(int r,int g,int b,int a)71 Color(int r, int g, int b, int a) : m_color(makeRGBA(r, g, b, a)), m_valid(true) { } 72 // Color is currently limited to 32bit RGBA, perhaps some day we'll support better colors Color(float r,float g,float b,float a)73 Color(float r, float g, float b, float a) : m_color(makeRGBA32FromFloats(r, g, b, a)), m_valid(true) { } 74 explicit Color(const String&); 75 explicit Color(const char*); 76 77 String name() const; 78 void setNamedColor(const String&); 79 isValid()80 bool isValid() const { return m_valid; } 81 hasAlpha()82 bool hasAlpha() const { return alpha() < 255; } 83 red()84 int red() const { return (m_color >> 16) & 0xFF; } green()85 int green() const { return (m_color >> 8) & 0xFF; } blue()86 int blue() const { return m_color & 0xFF; } alpha()87 int alpha() const { return (m_color >> 24) & 0xFF; } 88 rgb()89 RGBA32 rgb() const { return m_color; } // Preserve the alpha. setRGB(int r,int g,int b)90 void setRGB(int r, int g, int b) { m_color = makeRGB(r, g, b); m_valid = true; } setRGB(RGBA32 rgb)91 void setRGB(RGBA32 rgb) { m_color = rgb; m_valid = true; } 92 void getRGBA(float& r, float& g, float& b, float& a) const; 93 void getRGBA(double& r, double& g, double& b, double& a) const; 94 95 Color light() const; 96 Color dark() const; 97 98 Color blend(const Color&) const; 99 Color blendWithWhite() const; 100 101 #if PLATFORM(QT) 102 Color(const QColor&); 103 operator QColor() const; 104 #endif 105 106 #if PLATFORM(GTK) 107 Color(const GdkColor&); 108 // We can't sensibly go back to GdkColor without losing the alpha value 109 #endif 110 111 #if PLATFORM(WX) 112 Color(const wxColour&); 113 operator wxColour() const; 114 #endif 115 116 #if PLATFORM(CG) 117 Color(CGColorRef); 118 #endif 119 120 static bool parseHexColor(const String& name, RGBA32& rgb); 121 122 static const RGBA32 black = 0xFF000000; 123 static const RGBA32 white = 0xFFFFFFFF; 124 static const RGBA32 darkGray = 0xFF808080; 125 static const RGBA32 gray = 0xFFA0A0A0; 126 static const RGBA32 lightGray = 0xFFC0C0C0; 127 static const RGBA32 transparent = 0x00000000; 128 129 #ifdef ANDROID_CSS_TAP_HIGHLIGHT_COLOR 130 static const RGBA32 tap = 0x4D1A1A1A; 131 #endif 132 133 private: 134 RGBA32 m_color; 135 bool m_valid; 136 }; 137 138 inline bool operator==(const Color& a, const Color& b) 139 { 140 return a.rgb() == b.rgb() && a.isValid() == b.isValid(); 141 } 142 143 inline bool operator!=(const Color& a, const Color& b) 144 { 145 return !(a == b); 146 } 147 148 Color focusRingColor(); 149 150 #if PLATFORM(CG) 151 CGColorRef cgColor(const Color&); 152 #endif 153 154 } // namespace WebCore 155 156 #endif // Color_h 157