325 lines
7.8 KiB
C
325 lines
7.8 KiB
C
#include "mupdf/fitz.h"
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#include "svg-imp.h"
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#include <string.h>
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/* Color keywords (white, blue, fuchsia)
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* System color keywords (ActiveBorder, ButtonFace -- need to find reasonable defaults)
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* #fb0 (expand to #ffbb00)
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* #ffbb00
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* rgb(255,255,255)
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* rgb(100%,100%,100%)
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*
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* "red icc-color(profileName,255,0,0)" (not going to support for now)
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*/
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struct
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{
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const char *name;
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float red, green, blue;
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}
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svg_predefined_colors[] =
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{
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{ "aliceblue", 240, 248, 255 },
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{ "antiquewhite", 250, 235, 215 },
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{ "aqua", 0, 255, 255 },
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{ "aquamarine", 127, 255, 212 },
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{ "azure", 240, 255, 255 },
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{ "beige", 245, 245, 220 },
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{ "bisque", 255, 228, 196 },
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{ "black", 0, 0, 0 },
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{ "blanchedalmond", 255, 235, 205 },
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{ "blue", 0, 0, 255 },
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{ "blueviolet", 138, 43, 226 },
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{ "brown", 165, 42, 42 },
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{ "burlywood", 222, 184, 135 },
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{ "cadetblue", 95, 158, 160 },
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{ "chartreuse", 127, 255, 0 },
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{ "chocolate", 210, 105, 30 },
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{ "coral", 255, 127, 80 },
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{ "cornflowerblue", 100, 149, 237 },
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{ "cornsilk", 255, 248, 220 },
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{ "crimson", 220, 20, 60 },
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{ "cyan", 0, 255, 255 },
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{ "darkblue", 0, 0, 139 },
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{ "darkcyan", 0, 139, 139 },
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{ "darkgoldenrod", 184, 134, 11 },
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{ "darkgray", 169, 169, 169 },
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{ "darkgreen", 0, 100, 0 },
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{ "darkgrey", 169, 169, 169 },
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{ "darkkhaki", 189, 183, 107 },
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{ "darkmagenta", 139, 0, 139 },
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{ "darkolivegreen", 85, 107, 47 },
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{ "darkorange", 255, 140, 0 },
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{ "darkorchid", 153, 50, 204 },
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{ "darkred", 139, 0, 0 },
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{ "darksalmon", 233, 150, 122 },
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{ "darkseagreen", 143, 188, 143 },
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{ "darkslateblue", 72, 61, 139 },
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{ "darkslategray", 47, 79, 79 },
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{ "darkslategrey", 47, 79, 79 },
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{ "darkturquoise", 0, 206, 209 },
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{ "darkviolet", 148, 0, 211 },
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{ "deeppink", 255, 20, 147 },
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{ "deepskyblue", 0, 191, 255 },
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{ "dimgray", 105, 105, 105 },
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{ "dimgrey", 105, 105, 105 },
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{ "dodgerblue", 30, 144, 255 },
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{ "firebrick", 178, 34, 34 },
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{ "floralwhite", 255, 250, 240 },
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{ "forestgreen", 34, 139, 34 },
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{ "fuchsia", 255, 0, 255 },
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{ "gainsboro", 220, 220, 220 },
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{ "ghostwhite", 248, 248, 255 },
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{ "gold", 255, 215, 0 },
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{ "goldenrod", 218, 165, 32 },
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{ "gray", 128, 128, 128 },
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{ "green", 0, 128, 0 },
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{ "greenyellow", 173, 255, 47 },
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{ "grey", 128, 128, 128 },
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{ "honeydew", 240, 255, 240 },
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{ "hotpink", 255, 105, 180 },
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{ "indianred", 205, 92, 92 },
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{ "indigo", 75, 0, 130 },
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{ "ivory", 255, 255, 240 },
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{ "khaki", 240, 230, 140 },
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{ "lavender", 230, 230, 250 },
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{ "lavenderblush", 255, 240, 245 },
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{ "lawngreen", 124, 252, 0 },
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{ "lemonchiffon", 255, 250, 205 },
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{ "lightblue", 173, 216, 230 },
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{ "lightcoral", 240, 128, 128 },
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{ "lightcyan", 224, 255, 255 },
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{ "lightgoldenrodyellow", 250, 250, 210 },
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{ "lightgray", 211, 211, 211 },
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{ "lightgreen", 144, 238, 144 },
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{ "lightgrey", 211, 211, 211 },
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{ "lightpink", 255, 182, 193 },
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{ "lightsalmon", 255, 160, 122 },
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{ "lightseagreen", 32, 178, 170 },
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{ "lightskyblue", 135, 206, 250 },
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{ "lightslategray", 119, 136, 153 },
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{ "lightslategrey", 119, 136, 153 },
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{ "lightsteelblue", 176, 196, 222 },
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{ "lightyellow", 255, 255, 224 },
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{ "lime", 0, 255, 0 },
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{ "limegreen", 50, 205, 50 },
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{ "linen", 250, 240, 230 },
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{ "magenta", 255, 0, 255 },
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{ "maroon", 128, 0, 0 },
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{ "mediumaquamarine", 102, 205, 170 },
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{ "mediumblue", 0, 0, 205 },
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{ "mediumorchid", 186, 85, 211 },
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{ "mediumpurple", 147, 112, 219 },
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{ "mediumseagreen", 60, 179, 113 },
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{ "mediumslateblue", 123, 104, 238 },
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{ "mediumspringgreen", 0, 250, 154 },
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{ "mediumturquoise", 72, 209, 204 },
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{ "mediumvioletred", 199, 21, 133 },
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{ "midnightblue", 25, 25, 112 },
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{ "mintcream", 245, 255, 250 },
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{ "mistyrose", 255, 228, 225 },
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{ "moccasin", 255, 228, 181 },
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{ "navajowhite", 255, 222, 173 },
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{ "navy", 0, 0, 128 },
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{ "oldlace", 253, 245, 230 },
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{ "olive", 128, 128, 0 },
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{ "olivedrab", 107, 142, 35 },
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{ "orange", 255, 165, 0 },
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{ "orangered", 255, 69, 0 },
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{ "orchid", 218, 112, 214 },
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{ "palegoldenrod", 238, 232, 170 },
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{ "palegreen", 152, 251, 152 },
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{ "paleturquoise", 175, 238, 238 },
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{ "palevioletred", 219, 112, 147 },
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{ "papayawhip", 255, 239, 213 },
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{ "peachpuff", 255, 218, 185 },
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{ "peru", 205, 133, 63 },
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{ "pink", 255, 192, 203 },
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{ "plum", 221, 160, 221 },
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{ "powderblue", 176, 224, 230 },
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{ "purple", 128, 0, 128 },
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{ "red", 255, 0, 0 },
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{ "rosybrown", 188, 143, 143 },
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{ "royalblue", 65, 105, 225 },
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{ "saddlebrown", 139, 69, 19 },
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{ "salmon", 250, 128, 114 },
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{ "sandybrown", 244, 164, 96 },
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{ "seagreen", 46, 139, 87 },
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{ "seashell", 255, 245, 238 },
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{ "sienna", 160, 82, 45 },
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{ "silver", 192, 192, 192 },
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{ "skyblue", 135, 206, 235 },
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{ "slateblue", 106, 90, 205 },
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{ "slategray", 112, 128, 144 },
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{ "slategrey", 112, 128, 144 },
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{ "snow", 255, 250, 250 },
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{ "springgreen", 0, 255, 127 },
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{ "steelblue", 70, 130, 180 },
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{ "tan", 210, 180, 140 },
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{ "teal", 0, 128, 128 },
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{ "thistle", 216, 191, 216 },
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{ "tomato", 255, 99, 71 },
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{ "turquoise", 64, 224, 208 },
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{ "violet", 238, 130, 238 },
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{ "wheat", 245, 222, 179 },
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{ "white", 255, 255, 255 },
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{ "whitesmoke", 245, 245, 245 },
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{ "yellow", 255, 255, 0 },
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{ "yellowgreen", 154, 205, 50 },
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};
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static int unhex(int chr)
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{
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const char *hextable = "0123456789abcdef";
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return strchr(hextable, (chr|32)) - hextable;
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}
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static int ishex(int chr)
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{
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if (chr >= '0' && chr <= '9') return 1;
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if (chr >= 'A' && chr <= 'F') return 1;
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if (chr >= 'a' && chr <= 'f') return 1;
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return 0;
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}
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void
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svg_parse_color(fz_context *ctx, svg_document *doc, const char *str, float *rgb)
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{
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int i, l, m, r, cmp, n;
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rgb[0] = 0.0f;
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rgb[1] = 0.0f;
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rgb[2] = 0.0f;
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/* Crack hex-coded RGB */
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if (str[0] == '#')
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{
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str ++;
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n = strlen(str);
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if (n == 3 || (n > 3 && !ishex(str[3])))
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{
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rgb[0] = (unhex(str[0]) * 16 + unhex(str[0])) / 255.0f;
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rgb[1] = (unhex(str[1]) * 16 + unhex(str[1])) / 255.0f;
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rgb[2] = (unhex(str[2]) * 16 + unhex(str[2])) / 255.0f;
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return;
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}
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if (n >= 6)
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{
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rgb[0] = (unhex(str[0]) * 16 + unhex(str[1])) / 255.0f;
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rgb[1] = (unhex(str[2]) * 16 + unhex(str[3])) / 255.0f;
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rgb[2] = (unhex(str[4]) * 16 + unhex(str[5])) / 255.0f;
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return;
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}
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return;
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}
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/* rgb(X,Y,Z) -- whitespace allowed around numbers */
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else if (strstr(str, "rgb("))
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{
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int numberlen = 0;
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char numberbuf[50];
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str = str + 4;
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for (i = 0; i < 3; i++)
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{
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while (svg_is_whitespace_or_comma(*str))
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str ++;
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if (svg_is_digit(*str))
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{
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numberlen = 0;
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while (svg_is_digit(*str) && numberlen < (int)sizeof(numberbuf) - 1)
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numberbuf[numberlen++] = *str++;
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numberbuf[numberlen] = 0;
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if (*str == '%')
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{
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str ++;
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rgb[i] = fz_atof(numberbuf) / 100.0f;
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}
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else
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{
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rgb[i] = fz_atof(numberbuf) / 255.0f;
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}
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}
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}
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return;
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}
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/* TODO: parse icc-profile(X,Y,Z,W) syntax */
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/* Search for a pre-defined color */
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else
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{
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char keyword[50], *p;
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fz_strlcpy(keyword, str, sizeof keyword);
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p = keyword;
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while (*p && *p >= 'a' && *p <= 'z')
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++p;
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*p = 0;
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l = 0;
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r = sizeof(svg_predefined_colors) / sizeof(svg_predefined_colors[0]);
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while (l <= r)
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{
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m = (l + r) / 2;
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cmp = strcmp(svg_predefined_colors[m].name, keyword);
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if (cmp > 0)
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r = m - 1;
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else if (cmp < 0)
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l = m + 1;
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else
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{
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rgb[0] = svg_predefined_colors[m].red / 255.0f;
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rgb[1] = svg_predefined_colors[m].green / 255.0f;
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rgb[2] = svg_predefined_colors[m].blue / 255.0f;
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return;
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}
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}
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}
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}
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void
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svg_parse_color_from_style(fz_context *ctx, svg_document *doc, const char *str,
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int *fill_is_set, float fill[3],
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int *stroke_is_set, float stroke[3])
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{
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const char *p;
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p = strstr(str, "fill:");
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if (p)
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{
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p += 5;
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while (*p && svg_is_whitespace(*p))
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++p;
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if (strncmp(p, "none", 4) != 0)
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{
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svg_parse_color(ctx, doc, p, fill);
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*fill_is_set = 1;
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}
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}
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p = strstr(str, "stroke:");
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if (p)
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{
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p += 7;
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while (*p && svg_is_whitespace(*p))
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++p;
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if (strncmp(p, "none", 4) != 0)
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{
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svg_parse_color(ctx, doc, p, stroke);
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*stroke_is_set = 1;
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}
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}
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}
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