1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
|
/*
* 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 <wtf/FastAllocBase.h>
#include <wtf/Forward.h>
#include <wtf/unicode/Unicode.h>
#if USE(CG)
#include "ColorSpace.h"
typedef struct CGColor* CGColorRef;
#endif
#if PLATFORM(QT)
#include <qglobal.h>
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
|
