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1 /* | |
2 * Copyright (C) 2006 Apple Computer, Inc. All rights reserved. | |
3 * Copyright (C) 2012 Rik Cabanier (cabanier@adobe.com) | |
4 * | |
5 * Redistribution and use in source and binary forms, with or without | |
6 * modification, are permitted provided that the following conditions | |
7 * are met: | |
8 * 1. Redistributions of source code must retain the above copyright | |
9 * notice, this list of conditions and the following disclaimer. | |
10 * 2. Redistributions in binary form must reproduce the above copyright | |
11 * notice, this list of conditions and the following disclaimer in the | |
12 * documentation and/or other materials provided with the distribution. | |
13 * | |
14 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY | |
15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR | |
18 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
19 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
20 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | |
21 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY | |
22 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
25 */ | |
26 | |
27 #include "config.h" | |
28 #include "core/platform/graphics/GraphicsTypes.h" | |
29 | |
30 #include "wtf/Assertions.h" | |
31 #include "wtf/text/WTFString.h" | |
32 | |
33 namespace WebCore { | |
34 | |
35 static const char* const compositeOperatorNames[] = { | |
36 "clear", | |
37 "copy", | |
38 "source-over", | |
39 "source-in", | |
40 "source-out", | |
41 "source-atop", | |
42 "destination-over", | |
43 "destination-in", | |
44 "destination-out", | |
45 "destination-atop", | |
46 "xor", | |
47 "darker", | |
48 "lighter" | |
49 }; | |
50 | |
51 static const char* const blendOperatorNames[] = { | |
52 "multiply", | |
53 "screen", | |
54 "overlay", | |
55 "darken", | |
56 "lighten", | |
57 "color-dodge", | |
58 "color-burn", | |
59 "hard-light", | |
60 "soft-light", | |
61 "difference", | |
62 "exclusion", | |
63 "hue", | |
64 "saturation", | |
65 "color", | |
66 "luminosity" | |
67 }; | |
68 const int numCompositeOperatorNames = WTF_ARRAY_LENGTH(compositeOperatorNames); | |
69 const int numBlendOperatorNames = WTF_ARRAY_LENGTH(blendOperatorNames); | |
70 | |
71 bool parseCompositeAndBlendOperator(const String& s, CompositeOperator& op, Blen
dMode& blendOp) | |
72 { | |
73 for (int i = 0; i < numCompositeOperatorNames; i++) { | |
74 if (s == compositeOperatorNames[i]) { | |
75 op = static_cast<CompositeOperator>(i); | |
76 blendOp = BlendModeNormal; | |
77 return true; | |
78 } | |
79 } | |
80 | |
81 for (int i = 0; i < numBlendOperatorNames; i++) { | |
82 if (s == blendOperatorNames[i]) { | |
83 blendOp = static_cast<BlendMode>(i+1); | |
84 // For now, blending will always assume source-over. This will be fi
xed in the future | |
85 op = CompositeSourceOver; | |
86 return true; | |
87 } | |
88 } | |
89 | |
90 return false; | |
91 } | |
92 | |
93 // FIXME: when we support blend modes in combination with compositing other than
source-over | |
94 // this routine needs to be updated. | |
95 String compositeOperatorName(CompositeOperator op, BlendMode blendOp) | |
96 { | |
97 ASSERT(op >= 0); | |
98 ASSERT(op < numCompositeOperatorNames); | |
99 ASSERT(blendOp >= 0); | |
100 ASSERT(blendOp <= numBlendOperatorNames); | |
101 if (blendOp != BlendModeNormal) | |
102 return blendOperatorNames[blendOp-1]; | |
103 return compositeOperatorNames[op]; | |
104 } | |
105 | |
106 bool parseLineCap(const String& s, LineCap& cap) | |
107 { | |
108 if (s == "butt") { | |
109 cap = ButtCap; | |
110 return true; | |
111 } | |
112 if (s == "round") { | |
113 cap = RoundCap; | |
114 return true; | |
115 } | |
116 if (s == "square") { | |
117 cap = SquareCap; | |
118 return true; | |
119 } | |
120 return false; | |
121 } | |
122 | |
123 String lineCapName(LineCap cap) | |
124 { | |
125 ASSERT(cap >= 0); | |
126 ASSERT(cap < 3); | |
127 const char* const names[3] = { "butt", "round", "square" }; | |
128 return names[cap]; | |
129 } | |
130 | |
131 bool parseLineJoin(const String& s, LineJoin& join) | |
132 { | |
133 if (s == "miter") { | |
134 join = MiterJoin; | |
135 return true; | |
136 } | |
137 if (s == "round") { | |
138 join = RoundJoin; | |
139 return true; | |
140 } | |
141 if (s == "bevel") { | |
142 join = BevelJoin; | |
143 return true; | |
144 } | |
145 return false; | |
146 } | |
147 | |
148 String lineJoinName(LineJoin join) | |
149 { | |
150 ASSERT(join >= 0); | |
151 ASSERT(join < 3); | |
152 const char* const names[3] = { "miter", "round", "bevel" }; | |
153 return names[join]; | |
154 } | |
155 | |
156 String textAlignName(TextAlign align) | |
157 { | |
158 ASSERT(align >= 0); | |
159 ASSERT(align < 5); | |
160 const char* const names[5] = { "start", "end", "left", "center", "right" }; | |
161 return names[align]; | |
162 } | |
163 | |
164 bool parseTextAlign(const String& s, TextAlign& align) | |
165 { | |
166 if (s == "start") { | |
167 align = StartTextAlign; | |
168 return true; | |
169 } | |
170 if (s == "end") { | |
171 align = EndTextAlign; | |
172 return true; | |
173 } | |
174 if (s == "left") { | |
175 align = LeftTextAlign; | |
176 return true; | |
177 } | |
178 if (s == "center") { | |
179 align = CenterTextAlign; | |
180 return true; | |
181 } | |
182 if (s == "right") { | |
183 align = RightTextAlign; | |
184 return true; | |
185 } | |
186 return false; | |
187 } | |
188 | |
189 String textBaselineName(TextBaseline baseline) | |
190 { | |
191 ASSERT(baseline >= 0); | |
192 ASSERT(baseline < 6); | |
193 const char* const names[6] = { "alphabetic", "top", "middle", "bottom", "ide
ographic", "hanging" }; | |
194 return names[baseline]; | |
195 } | |
196 | |
197 bool parseTextBaseline(const String& s, TextBaseline& baseline) | |
198 { | |
199 if (s == "alphabetic") { | |
200 baseline = AlphabeticTextBaseline; | |
201 return true; | |
202 } | |
203 if (s == "top") { | |
204 baseline = TopTextBaseline; | |
205 return true; | |
206 } | |
207 if (s == "middle") { | |
208 baseline = MiddleTextBaseline; | |
209 return true; | |
210 } | |
211 if (s == "bottom") { | |
212 baseline = BottomTextBaseline; | |
213 return true; | |
214 } | |
215 if (s == "ideographic") { | |
216 baseline = IdeographicTextBaseline; | |
217 return true; | |
218 } | |
219 if (s == "hanging") { | |
220 baseline = HangingTextBaseline; | |
221 return true; | |
222 } | |
223 return false; | |
224 } | |
225 | |
226 } | |
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