/* * Copyright (C) 2003, 2004, 2005, 2006, 2010 Apple Inc. All rights reserved. * * 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 Color_h #define Color_h #include #include #include #if USE(CG) #include "ColorSpace.h" typedef struct CGColor* CGColorRef; #endif #if PLATFORM(QT) #include QT_BEGIN_NAMESPACE class QColor; QT_END_NAMESPACE #endif #if PLATFORM(GTK) typedef struct _GdkColor GdkColor; #ifndef GTK_API_VERSION_2 typedef struct _GdkRGBA GdkRGBA; #endif #endif #if PLATFORM(WX) class wxColour; #endif #if PLATFORM(HAIKU) struct rgb_color; #endif namespace WebCore { class Color; typedef unsigned RGBA32; // RGBA quadruplet RGBA32 makeRGB(int r, int g, int b); RGBA32 makeRGBA(int r, int g, int b, int a); RGBA32 colorWithOverrideAlpha(RGBA32 color, float overrideAlpha); RGBA32 makeRGBA32FromFloats(float r, float g, float b, float a); RGBA32 makeRGBAFromHSLA(double h, double s, double l, double a); RGBA32 makeRGBAFromCMYKA(float c, float m, float y, float k, float a); int differenceSquared(const Color&, const Color&); inline int redChannel(RGBA32 color) { return (color >> 16) & 0xFF; } inline int greenChannel(RGBA32 color) { return (color >> 8) & 0xFF; } inline int blueChannel(RGBA32 color) { return color & 0xFF; } inline int alphaChannel(RGBA32 color) { return (color >> 24) & 0xFF; } class Color { WTF_MAKE_FAST_ALLOCATED; public: Color() : m_color(0), m_valid(false) { } Color(RGBA32 col) : m_color(col), m_valid(true) { } 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) : m_color(makeRGBA(r, g, b, a)), m_valid(true) { } // Color is currently limited to 32bit RGBA, perhaps some day we'll support better colors Color(float r, float g, float b, float a) : m_color(makeRGBA32FromFloats(r, g, b, a)), m_valid(true) { } // Creates a new color from the specific CMYK and alpha values. Color(float c, float m, float y, float k, float a) : m_color(makeRGBAFromCMYKA(c, m, y, k, a)), m_valid(true) { } explicit Color(const String&); explicit Color(const char*); // Returns the color serialized according to HTML5 // - http://www.whatwg.org/specs/web-apps/current-work/#serialization-of-a-color String serialized() const; // Returns the color serialized as either #RRGGBB or #RRGGBBAA // The latter format is not a valid CSS color, and should only be seen in DRT dumps. String nameForRenderTreeAsText() const; void setNamedColor(const String&); bool isValid() const { return m_valid; } bool hasAlpha() const { return alpha() < 255; } int red() const { return redChannel(m_color); } int green() const { return greenChannel(m_color); } int blue() const { return blueChannel(m_color); } int alpha() const { return alphaChannel(m_color); } RGBA32 rgb() const { return m_color; } // Preserve the alpha. void setRGB(int r, int g, int b) { m_color = makeRGB(r, g, b); m_valid = true; } void setRGB(RGBA32 rgb) { m_color = rgb; m_valid = true; } void getRGBA(float& r, float& g, float& b, float& a) const; void getRGBA(double& r, double& g, double& b, double& a) const; void getHSL(double& h, double& s, double& l) const; Color light() const; Color dark() const; Color blend(const Color&) const; Color blendWithWhite() const; #if PLATFORM(QT) Color(const QColor&); operator QColor() const; #endif #if PLATFORM(GTK) Color(const GdkColor&); // We can't sensibly go back to GdkColor without losing the alpha value #ifndef GTK_API_VERSION_2 Color(const GdkRGBA&); operator GdkRGBA() const; #endif #endif #if PLATFORM(WX) Color(const wxColour&); operator wxColour() const; #endif #if USE(CG) Color(CGColorRef); #endif #if PLATFORM(HAIKU) Color(const rgb_color&); operator rgb_color() const; #endif static bool parseHexColor(const String& name, RGBA32& rgb); static bool parseHexColor(const UChar* name, unsigned length, RGBA32& rgb); static const RGBA32 black = 0xFF000000; static const RGBA32 white = 0xFFFFFFFF; static const RGBA32 darkGray = 0xFF808080; static const RGBA32 gray = 0xFFA0A0A0; static const RGBA32 lightGray = 0xFFC0C0C0; static const RGBA32 transparent = 0x00000000; #ifdef ANDROID_CSS_TAP_HIGHLIGHT_COLOR static const RGBA32 tap = 0x6633B5E5; #endif private: RGBA32 m_color; bool m_valid; }; inline bool operator==(const Color& a, const Color& b) { return a.rgb() == b.rgb() && a.isValid() == b.isValid(); } inline bool operator!=(const Color& a, const Color& b) { return !(a == b); } Color colorFromPremultipliedARGB(unsigned); unsigned premultipliedARGBFromColor(const Color&); #if USE(CG) CGColorRef cachedCGColor(const Color&, ColorSpace); #endif } // namespace WebCore #endif // Color_h