1 /* 2 * Copyright (C) 2006 Apple Computer, Inc. All rights reserved. 3 * Copyright (C) 2012 Rik Cabanier (cabanier (at) 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 "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, blink::WebBlendMode& blendOp) 72 { 73 for (int i = 0; i < numCompositeOperatorNames; i++) { 74 if (s == compositeOperatorNames[i]) { 75 op = static_cast<CompositeOperator>(i); 76 blendOp = blink::WebBlendModeNormal; 77 return true; 78 } 79 } 80 81 for (int i = 0; i < numBlendOperatorNames; i++) { 82 if (s == blendOperatorNames[i]) { 83 blendOp = static_cast<blink::WebBlendMode>(i+1); 84 // For now, blending will always assume source-over. This will be fixed 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, blink::WebBlendMode blendOp) 96 { 97 ASSERT(op >= 0); 98 ASSERT(op < numCompositeOperatorNames); 99 ASSERT(blendOp >= 0); 100 ASSERT(blendOp <= numBlendOperatorNames); 101 if (blendOp != blink::WebBlendModeNormal) 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", "ideographic", "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 } 227
