1 files changed, 273 insertions, 0 deletions
diff --git a/source/svg/svg-color.c b/source/svg/svg-color.c
new file mode 100644
index 00000000..3fef124e
--- /dev/null
+++ b/source/svg/svg-color.c
@@ -0,0 +1,273 @@
+#include "mupdf/svg.h"
+
+/* Color keywords (white, blue, fuchsia)
+ * System color keywords (ActiveBorder, ButtonFace -- need to find reasonable defaults)
+ * #fb0 (expand to #ffbb00)
+ * #ffbb00
+ * rgb(255,255,255)
+ * rgb(100%,100%,100%)
+ *
+ * "red icc-color(profileName,255,0,0)" (not going to support for now)
+ */
+
+struct
+{
+	const char *name;
+	float red, green, blue;
+}
+svg_predefined_colors[] =
+{
+	{ "aliceblue", 240, 248, 255 },
+	{ "antiquewhite", 250, 235, 215 },
+	{ "aqua", 0, 255, 255 },
+	{ "aquamarine", 127, 255, 212 },
+	{ "azure", 240, 255, 255 },
+	{ "beige", 245, 245, 220 },
+	{ "bisque", 255, 228, 196 },
+	{ "black", 0, 0, 0 },
+	{ "blanchedalmond", 255, 235, 205 },
+	{ "blue", 0, 0, 255 },
+	{ "blueviolet", 138, 43, 226 },
+	{ "brown", 165, 42, 42 },
+	{ "burlywood", 222, 184, 135 },
+	{ "cadetblue", 95, 158, 160 },
+	{ "chartreuse", 127, 255, 0 },
+	{ "chocolate", 210, 105, 30 },
+	{ "coral", 255, 127, 80 },
+	{ "cornflowerblue", 100, 149, 237 },
+	{ "cornsilk", 255, 248, 220 },
+	{ "crimson", 220, 20, 60 },
+	{ "cyan", 0, 255, 255 },
+	{ "darkblue", 0, 0, 139 },
+	{ "darkcyan", 0, 139, 139 },
+	{ "darkgoldenrod", 184, 134, 11 },
+	{ "darkgray", 169, 169, 169 },
+	{ "darkgreen", 0, 100, 0 },
+	{ "darkgrey", 169, 169, 169 },
+	{ "darkkhaki", 189, 183, 107 },
+	{ "darkmagenta", 139, 0, 139 },
+	{ "darkolivegreen", 85, 107, 47 },
+	{ "darkorange", 255, 140, 0 },
+	{ "darkorchid", 153, 50, 204 },
+	{ "darkred", 139, 0, 0 },
+	{ "darksalmon", 233, 150, 122 },
+	{ "darkseagreen", 143, 188, 143 },
+	{ "darkslateblue", 72, 61, 139 },
+	{ "darkslategray", 47, 79, 79 },
+	{ "darkslategrey", 47, 79, 79 },
+	{ "darkturquoise", 0, 206, 209 },
+	{ "darkviolet", 148, 0, 211 },
+	{ "deeppink", 255, 20, 147 },
+	{ "deepskyblue", 0, 191, 255 },
+	{ "dimgray", 105, 105, 105 },
+	{ "dimgrey", 105, 105, 105 },
+	{ "dodgerblue", 30, 144, 255 },
+	{ "firebrick", 178, 34, 34 },
+	{ "floralwhite", 255, 250, 240 },
+	{ "forestgreen", 34, 139, 34 },
+	{ "fuchsia", 255, 0, 255 },
+	{ "gainsboro", 220, 220, 220 },
+	{ "ghostwhite", 248, 248, 255 },
+	{ "gold", 255, 215, 0 },
+	{ "goldenrod", 218, 165, 32 },
+	{ "gray", 128, 128, 128 },
+	{ "green", 0, 128, 0 },
+	{ "greenyellow", 173, 255, 47 },
+	{ "grey", 128, 128, 128 },
+	{ "honeydew", 240, 255, 240 },
+	{ "hotpink", 255, 105, 180 },
+	{ "indianred", 205, 92, 92 },
+	{ "indigo", 75, 0, 130 },
+	{ "ivory", 255, 255, 240 },
+	{ "khaki", 240, 230, 140 },
+	{ "lavender", 230, 230, 250 },
+	{ "lavenderblush", 255, 240, 245 },
+	{ "lawngreen", 124, 252, 0 },
+	{ "lemonchiffon", 255, 250, 205 },
+	{ "lightblue", 173, 216, 230 },
+	{ "lightcoral", 240, 128, 128 },
+	{ "lightcyan", 224, 255, 255 },
+	{ "lightgoldenrodyellow", 250, 250, 210 },
+	{ "lightgray", 211, 211, 211 },
+	{ "lightgreen", 144, 238, 144 },
+	{ "lightgrey", 211, 211, 211 },
+	{ "lightpink", 255, 182, 193 },
+	{ "lightsalmon", 255, 160, 122 },
+	{ "lightseagreen", 32, 178, 170 },
+	{ "lightskyblue", 135, 206, 250 },
+	{ "lightslategray", 119, 136, 153 },
+	{ "lightslategrey", 119, 136, 153 },
+	{ "lightsteelblue", 176, 196, 222 },
+	{ "lightyellow", 255, 255, 224 },
+	{ "lime", 0, 255, 0 },
+	{ "limegreen", 50, 205, 50 },
+	{ "linen", 250, 240, 230 },
+	{ "magenta", 255, 0, 255 },
+	{ "maroon", 128, 0, 0 },
+	{ "mediumaquamarine", 102, 205, 170 },
+	{ "mediumblue", 0, 0, 205 },
+	{ "mediumorchid", 186, 85, 211 },
+	{ "mediumpurple", 147, 112, 219 },
+	{ "mediumseagreen", 60, 179, 113 },
+	{ "mediumslateblue", 123, 104, 238 },
+	{ "mediumspringgreen", 0, 250, 154 },
+	{ "mediumturquoise", 72, 209, 204 },
+	{ "mediumvioletred", 199, 21, 133 },
+	{ "midnightblue", 25, 25, 112 },
+	{ "mintcream", 245, 255, 250 },
+	{ "mistyrose", 255, 228, 225 },
+	{ "moccasin", 255, 228, 181 },
+	{ "navajowhite", 255, 222, 173 },
+	{ "navy", 0, 0, 128 },
+	{ "oldlace", 253, 245, 230 },
+	{ "olive", 128, 128, 0 },
+	{ "olivedrab", 107, 142, 35 },
+	{ "orange", 255, 165, 0 },
+	{ "orangered", 255, 69, 0 },
+	{ "orchid", 218, 112, 214 },
+	{ "palegoldenrod", 238, 232, 170 },
+	{ "palegreen", 152, 251, 152 },
+	{ "paleturquoise", 175, 238, 238 },
+	{ "palevioletred", 219, 112, 147 },
+	{ "papayawhip", 255, 239, 213 },
+	{ "peachpuff", 255, 218, 185 },
+	{ "peru", 205, 133, 63 },
+	{ "pink", 255, 192, 203 },
+	{ "plum", 221, 160, 221 },
+	{ "powderblue", 176, 224, 230 },
+	{ "purple", 128, 0, 128 },
+	{ "red", 255, 0, 0 },
+	{ "rosybrown", 188, 143, 143 },
+	{ "royalblue", 65, 105, 225 },
+	{ "saddlebrown", 139, 69, 19 },
+	{ "salmon", 250, 128, 114 },
+	{ "sandybrown", 244, 164, 96 },
+	{ "seagreen", 46, 139, 87 },
+	{ "seashell", 255, 245, 238 },
+	{ "sienna", 160, 82, 45 },
+	{ "silver", 192, 192, 192 },
+	{ "skyblue", 135, 206, 235 },
+	{ "slateblue", 106, 90, 205 },
+	{ "slategray", 112, 128, 144 },
+	{ "slategrey", 112, 128, 144 },
+	{ "snow", 255, 250, 250 },
+	{ "springgreen", 0, 255, 127 },
+	{ "steelblue", 70, 130, 180 },
+	{ "tan", 210, 180, 140 },
+	{ "teal", 0, 128, 128 },
+	{ "thistle", 216, 191, 216 },
+	{ "tomato", 255, 99, 71 },
+	{ "turquoise", 64, 224, 208 },
+	{ "violet", 238, 130, 238 },
+	{ "wheat", 245, 222, 179 },
+	{ "white", 255, 255, 255 },
+	{ "whitesmoke", 245, 245, 245 },
+	{ "yellow", 255, 255, 0 },
+	{ "yellowgreen", 154, 205, 50 },
+};
+
+static int unhex(int chr)
+{
+	const char *hextable = "0123456789abcdef";
+	return strchr(hextable, (chr|32)) - hextable;
+}
+
+void
+svg_parse_color(fz_context *ctx, svg_document *doc, char *str, float *rgb)
+{
+	int i, l, m, r, cmp;
+
+	rgb[0] = 0.0;
+	rgb[1] = 0.0;
+	rgb[2] = 0.0;
+
+	/* Crack hex-coded RGB */
+
+	if (str[0] == '#')
+	{
+		str ++;
+
+		if (strlen(str) == 3)
+		{
+			rgb[0] = (unhex(str[0]) * 16 + unhex(str[0])) / 255.0;
+			rgb[1] = (unhex(str[1]) * 16 + unhex(str[1])) / 255.0;
+			rgb[2] = (unhex(str[2]) * 16 + unhex(str[2])) / 255.0;
+			return;
+		}
+
+		if (strlen(str) == 6)
+		{
+			rgb[0] = (unhex(str[0]) * 16 + unhex(str[1])) / 255.0;
+			rgb[1] = (unhex(str[2]) * 16 + unhex(str[3])) / 255.0;
+			rgb[2] = (unhex(str[4]) * 16 + unhex(str[5])) / 255.0;
+			return;
+		}
+
+		fz_throw(ctx, FZ_ERROR_GENERIC, "syntax error in color - wrong length of string after #");
+	}
+
+	/* rgb(X,Y,Z) -- whitespace allowed around numbers */
+
+	else if (strstr(str, "rgb("))
+	{
+		int numberlen = 0;
+		char numberbuf[50];
+
+		str = str + 4;
+
+		for (i = 0; i < 3; i++)
+		{
+			while (svg_is_whitespace_or_comma(*str))
+				str ++;
+
+			if (svg_is_digit(*str))
+			{
+				numberlen = 0;
+				while (svg_is_digit(*str) && numberlen < sizeof(numberbuf) - 1)
+					numberbuf[numberlen++] = *str++;
+				numberbuf[numberlen] = 0;
+
+				if (*str == '%')
+				{
+					str ++;
+					rgb[i] = atof(numberbuf) / 100.0;
+				}
+				else
+				{
+					rgb[i] = atof(numberbuf) / 255.0;
+				}
+			}
+		}
+
+		return;
+	}
+
+	/* TODO: parse icc-profile(X,Y,Z,W) syntax */
+
+	/* Search for a pre-defined color */
+
+	else
+	{
+		l = 0;
+		r = sizeof(svg_predefined_colors) / sizeof(svg_predefined_colors[0]);
+
+		while (l <= r)
+		{
+			m = (l + r) / 2;
+			cmp = strcmp(svg_predefined_colors[m].name, str);
+			if (cmp > 0)
+				r = m - 1;
+			else if (cmp < 0)
+				l = m + 1;
+			else
+			{
+				rgb[0] = svg_predefined_colors[m].red;
+				rgb[1] = svg_predefined_colors[m].green;
+				rgb[2] = svg_predefined_colors[m].blue;
+				return;
+			}
+		}
+	}
+
+	fz_throw(ctx, FZ_ERROR_GENERIC, "cannot recognize color syntax: '%s'", str);
+}