1 /* $OpenBSD: colour.c,v 1.28 2024/09/29 20:05:42 nicm Exp $ */
2
3 /*
4 * Copyright (c) 2008 Nicholas Marriott <nicholas.marriott@gmail.com>
5 * Copyright (c) 2016 Avi Halachmi <avihpit@yahoo.com>
6 *
7 * Permission to use, copy, modify, and distribute this software for any
8 * purpose with or without fee is hereby granted, provided that the above
9 * copyright notice and this permission notice appear in all copies.
10 *
11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15 * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
16 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
17 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18 */
19
20 #include <sys/types.h>
21
22 #include <ctype.h>
23 #include <stdlib.h>
24 #include <string.h>
25 #include <math.h>
26
27 #include "tmux.h"
28
29 static int
colour_dist_sq(int R,int G,int B,int r,int g,int b)30 colour_dist_sq(int R, int G, int B, int r, int g, int b)
31 {
32 return ((R - r) * (R - r) + (G - g) * (G - g) + (B - b) * (B - b));
33 }
34
35 static int
colour_to_6cube(int v)36 colour_to_6cube(int v)
37 {
38 if (v < 48)
39 return (0);
40 if (v < 114)
41 return (1);
42 return ((v - 35) / 40);
43 }
44
45 /*
46 * Convert an RGB triplet to the xterm(1) 256 colour palette.
47 *
48 * xterm provides a 6x6x6 colour cube (16 - 231) and 24 greys (232 - 255). We
49 * map our RGB colour to the closest in the cube, also work out the closest
50 * grey, and use the nearest of the two.
51 *
52 * Note that the xterm has much lower resolution for darker colours (they are
53 * not evenly spread out), so our 6 levels are not evenly spread: 0x0, 0x5f
54 * (95), 0x87 (135), 0xaf (175), 0xd7 (215) and 0xff (255). Greys are more
55 * evenly spread (8, 18, 28 ... 238).
56 */
57 int
colour_find_rgb(u_char r,u_char g,u_char b)58 colour_find_rgb(u_char r, u_char g, u_char b)
59 {
60 static const int q2c[6] = { 0x00, 0x5f, 0x87, 0xaf, 0xd7, 0xff };
61 int qr, qg, qb, cr, cg, cb, d, idx;
62 int grey_avg, grey_idx, grey;
63
64 /* Map RGB to 6x6x6 cube. */
65 qr = colour_to_6cube(r); cr = q2c[qr];
66 qg = colour_to_6cube(g); cg = q2c[qg];
67 qb = colour_to_6cube(b); cb = q2c[qb];
68
69 /* If we have hit the colour exactly, return early. */
70 if (cr == r && cg == g && cb == b)
71 return ((16 + (36 * qr) + (6 * qg) + qb) | COLOUR_FLAG_256);
72
73 /* Work out the closest grey (average of RGB). */
74 grey_avg = (r + g + b) / 3;
75 if (grey_avg > 238)
76 grey_idx = 23;
77 else
78 grey_idx = (grey_avg - 3) / 10;
79 grey = 8 + (10 * grey_idx);
80
81 /* Is grey or 6x6x6 colour closest? */
82 d = colour_dist_sq(cr, cg, cb, r, g, b);
83 if (colour_dist_sq(grey, grey, grey, r, g, b) < d)
84 idx = 232 + grey_idx;
85 else
86 idx = 16 + (36 * qr) + (6 * qg) + qb;
87 return (idx | COLOUR_FLAG_256);
88 }
89
90 /* Join RGB into a colour. */
91 int
colour_join_rgb(u_char r,u_char g,u_char b)92 colour_join_rgb(u_char r, u_char g, u_char b)
93 {
94 return ((((int)((r) & 0xff)) << 16) |
95 (((int)((g) & 0xff)) << 8) |
96 (((int)((b) & 0xff))) | COLOUR_FLAG_RGB);
97 }
98
99 /* Split colour into RGB. */
100 void
colour_split_rgb(int c,u_char * r,u_char * g,u_char * b)101 colour_split_rgb(int c, u_char *r, u_char *g, u_char *b)
102 {
103 *r = (c >> 16) & 0xff;
104 *g = (c >> 8) & 0xff;
105 *b = c & 0xff;
106 }
107
108 /* Force colour to RGB if not already. */
109 int
colour_force_rgb(int c)110 colour_force_rgb(int c)
111 {
112 if (c & COLOUR_FLAG_RGB)
113 return (c);
114 if (c & COLOUR_FLAG_256)
115 return (colour_256toRGB(c));
116 if (c >= 0 && c <= 7)
117 return (colour_256toRGB(c));
118 if (c >= 90 && c <= 97)
119 return (colour_256toRGB(8 + c - 90));
120 return (-1);
121 }
122
123 /* Convert colour to a string. */
124 const char *
colour_tostring(int c)125 colour_tostring(int c)
126 {
127 static char s[32];
128 u_char r, g, b;
129
130 if (c == -1)
131 return ("none");
132
133 if (c & COLOUR_FLAG_RGB) {
134 colour_split_rgb(c, &r, &g, &b);
135 xsnprintf(s, sizeof s, "#%02x%02x%02x", r, g, b);
136 return (s);
137 }
138
139 if (c & COLOUR_FLAG_256) {
140 xsnprintf(s, sizeof s, "colour%u", c & 0xff);
141 return (s);
142 }
143
144 switch (c) {
145 case 0:
146 return ("black");
147 case 1:
148 return ("red");
149 case 2:
150 return ("green");
151 case 3:
152 return ("yellow");
153 case 4:
154 return ("blue");
155 case 5:
156 return ("magenta");
157 case 6:
158 return ("cyan");
159 case 7:
160 return ("white");
161 case 8:
162 return ("default");
163 case 9:
164 return ("terminal");
165 case 90:
166 return ("brightblack");
167 case 91:
168 return ("brightred");
169 case 92:
170 return ("brightgreen");
171 case 93:
172 return ("brightyellow");
173 case 94:
174 return ("brightblue");
175 case 95:
176 return ("brightmagenta");
177 case 96:
178 return ("brightcyan");
179 case 97:
180 return ("brightwhite");
181 }
182 return ("invalid");
183 }
184
185 /* Convert colour from string. */
186 int
colour_fromstring(const char * s)187 colour_fromstring(const char *s)
188 {
189 const char *errstr;
190 const char *cp;
191 int n;
192 u_char r, g, b;
193
194 if (*s == '#' && strlen(s) == 7) {
195 for (cp = s + 1; isxdigit((u_char) *cp); cp++)
196 ;
197 if (*cp != '\0')
198 return (-1);
199 n = sscanf(s + 1, "%2hhx%2hhx%2hhx", &r, &g, &b);
200 if (n != 3)
201 return (-1);
202 return (colour_join_rgb(r, g, b));
203 }
204
205 if (strncasecmp(s, "colour", (sizeof "colour") - 1) == 0) {
206 n = strtonum(s + (sizeof "colour") - 1, 0, 255, &errstr);
207 if (errstr != NULL)
208 return (-1);
209 return (n | COLOUR_FLAG_256);
210 }
211 if (strncasecmp(s, "color", (sizeof "color") - 1) == 0) {
212 n = strtonum(s + (sizeof "color") - 1, 0, 255, &errstr);
213 if (errstr != NULL)
214 return (-1);
215 return (n | COLOUR_FLAG_256);
216 }
217
218 if (strcasecmp(s, "default") == 0)
219 return (8);
220 if (strcasecmp(s, "terminal") == 0)
221 return (9);
222
223 if (strcasecmp(s, "black") == 0 || strcmp(s, "0") == 0)
224 return (0);
225 if (strcasecmp(s, "red") == 0 || strcmp(s, "1") == 0)
226 return (1);
227 if (strcasecmp(s, "green") == 0 || strcmp(s, "2") == 0)
228 return (2);
229 if (strcasecmp(s, "yellow") == 0 || strcmp(s, "3") == 0)
230 return (3);
231 if (strcasecmp(s, "blue") == 0 || strcmp(s, "4") == 0)
232 return (4);
233 if (strcasecmp(s, "magenta") == 0 || strcmp(s, "5") == 0)
234 return (5);
235 if (strcasecmp(s, "cyan") == 0 || strcmp(s, "6") == 0)
236 return (6);
237 if (strcasecmp(s, "white") == 0 || strcmp(s, "7") == 0)
238 return (7);
239 if (strcasecmp(s, "brightblack") == 0 || strcmp(s, "90") == 0)
240 return (90);
241 if (strcasecmp(s, "brightred") == 0 || strcmp(s, "91") == 0)
242 return (91);
243 if (strcasecmp(s, "brightgreen") == 0 || strcmp(s, "92") == 0)
244 return (92);
245 if (strcasecmp(s, "brightyellow") == 0 || strcmp(s, "93") == 0)
246 return (93);
247 if (strcasecmp(s, "brightblue") == 0 || strcmp(s, "94") == 0)
248 return (94);
249 if (strcasecmp(s, "brightmagenta") == 0 || strcmp(s, "95") == 0)
250 return (95);
251 if (strcasecmp(s, "brightcyan") == 0 || strcmp(s, "96") == 0)
252 return (96);
253 if (strcasecmp(s, "brightwhite") == 0 || strcmp(s, "97") == 0)
254 return (97);
255 return (colour_byname(s));
256 }
257
258 /* Convert 256 colour to RGB colour. */
259 int
colour_256toRGB(int c)260 colour_256toRGB(int c)
261 {
262 static const int table[256] = {
263 0x000000, 0x800000, 0x008000, 0x808000,
264 0x000080, 0x800080, 0x008080, 0xc0c0c0,
265 0x808080, 0xff0000, 0x00ff00, 0xffff00,
266 0x0000ff, 0xff00ff, 0x00ffff, 0xffffff,
267 0x000000, 0x00005f, 0x000087, 0x0000af,
268 0x0000d7, 0x0000ff, 0x005f00, 0x005f5f,
269 0x005f87, 0x005faf, 0x005fd7, 0x005fff,
270 0x008700, 0x00875f, 0x008787, 0x0087af,
271 0x0087d7, 0x0087ff, 0x00af00, 0x00af5f,
272 0x00af87, 0x00afaf, 0x00afd7, 0x00afff,
273 0x00d700, 0x00d75f, 0x00d787, 0x00d7af,
274 0x00d7d7, 0x00d7ff, 0x00ff00, 0x00ff5f,
275 0x00ff87, 0x00ffaf, 0x00ffd7, 0x00ffff,
276 0x5f0000, 0x5f005f, 0x5f0087, 0x5f00af,
277 0x5f00d7, 0x5f00ff, 0x5f5f00, 0x5f5f5f,
278 0x5f5f87, 0x5f5faf, 0x5f5fd7, 0x5f5fff,
279 0x5f8700, 0x5f875f, 0x5f8787, 0x5f87af,
280 0x5f87d7, 0x5f87ff, 0x5faf00, 0x5faf5f,
281 0x5faf87, 0x5fafaf, 0x5fafd7, 0x5fafff,
282 0x5fd700, 0x5fd75f, 0x5fd787, 0x5fd7af,
283 0x5fd7d7, 0x5fd7ff, 0x5fff00, 0x5fff5f,
284 0x5fff87, 0x5fffaf, 0x5fffd7, 0x5fffff,
285 0x870000, 0x87005f, 0x870087, 0x8700af,
286 0x8700d7, 0x8700ff, 0x875f00, 0x875f5f,
287 0x875f87, 0x875faf, 0x875fd7, 0x875fff,
288 0x878700, 0x87875f, 0x878787, 0x8787af,
289 0x8787d7, 0x8787ff, 0x87af00, 0x87af5f,
290 0x87af87, 0x87afaf, 0x87afd7, 0x87afff,
291 0x87d700, 0x87d75f, 0x87d787, 0x87d7af,
292 0x87d7d7, 0x87d7ff, 0x87ff00, 0x87ff5f,
293 0x87ff87, 0x87ffaf, 0x87ffd7, 0x87ffff,
294 0xaf0000, 0xaf005f, 0xaf0087, 0xaf00af,
295 0xaf00d7, 0xaf00ff, 0xaf5f00, 0xaf5f5f,
296 0xaf5f87, 0xaf5faf, 0xaf5fd7, 0xaf5fff,
297 0xaf8700, 0xaf875f, 0xaf8787, 0xaf87af,
298 0xaf87d7, 0xaf87ff, 0xafaf00, 0xafaf5f,
299 0xafaf87, 0xafafaf, 0xafafd7, 0xafafff,
300 0xafd700, 0xafd75f, 0xafd787, 0xafd7af,
301 0xafd7d7, 0xafd7ff, 0xafff00, 0xafff5f,
302 0xafff87, 0xafffaf, 0xafffd7, 0xafffff,
303 0xd70000, 0xd7005f, 0xd70087, 0xd700af,
304 0xd700d7, 0xd700ff, 0xd75f00, 0xd75f5f,
305 0xd75f87, 0xd75faf, 0xd75fd7, 0xd75fff,
306 0xd78700, 0xd7875f, 0xd78787, 0xd787af,
307 0xd787d7, 0xd787ff, 0xd7af00, 0xd7af5f,
308 0xd7af87, 0xd7afaf, 0xd7afd7, 0xd7afff,
309 0xd7d700, 0xd7d75f, 0xd7d787, 0xd7d7af,
310 0xd7d7d7, 0xd7d7ff, 0xd7ff00, 0xd7ff5f,
311 0xd7ff87, 0xd7ffaf, 0xd7ffd7, 0xd7ffff,
312 0xff0000, 0xff005f, 0xff0087, 0xff00af,
313 0xff00d7, 0xff00ff, 0xff5f00, 0xff5f5f,
314 0xff5f87, 0xff5faf, 0xff5fd7, 0xff5fff,
315 0xff8700, 0xff875f, 0xff8787, 0xff87af,
316 0xff87d7, 0xff87ff, 0xffaf00, 0xffaf5f,
317 0xffaf87, 0xffafaf, 0xffafd7, 0xffafff,
318 0xffd700, 0xffd75f, 0xffd787, 0xffd7af,
319 0xffd7d7, 0xffd7ff, 0xffff00, 0xffff5f,
320 0xffff87, 0xffffaf, 0xffffd7, 0xffffff,
321 0x080808, 0x121212, 0x1c1c1c, 0x262626,
322 0x303030, 0x3a3a3a, 0x444444, 0x4e4e4e,
323 0x585858, 0x626262, 0x6c6c6c, 0x767676,
324 0x808080, 0x8a8a8a, 0x949494, 0x9e9e9e,
325 0xa8a8a8, 0xb2b2b2, 0xbcbcbc, 0xc6c6c6,
326 0xd0d0d0, 0xdadada, 0xe4e4e4, 0xeeeeee
327 };
328
329 return (table[c & 0xff] | COLOUR_FLAG_RGB);
330 }
331
332 /* Convert 256 colour to 16 colour. */
333 int
colour_256to16(int c)334 colour_256to16(int c)
335 {
336 static const char table[256] = {
337 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
338 0, 4, 4, 4, 12, 12, 2, 6, 4, 4, 12, 12, 2, 2, 6, 4,
339 12, 12, 2, 2, 2, 6, 12, 12, 10, 10, 10, 10, 14, 12, 10, 10,
340 10, 10, 10, 14, 1, 5, 4, 4, 12, 12, 3, 8, 4, 4, 12, 12,
341 2, 2, 6, 4, 12, 12, 2, 2, 2, 6, 12, 12, 10, 10, 10, 10,
342 14, 12, 10, 10, 10, 10, 10, 14, 1, 1, 5, 4, 12, 12, 1, 1,
343 5, 4, 12, 12, 3, 3, 8, 4, 12, 12, 2, 2, 2, 6, 12, 12,
344 10, 10, 10, 10, 14, 12, 10, 10, 10, 10, 10, 14, 1, 1, 1, 5,
345 12, 12, 1, 1, 1, 5, 12, 12, 1, 1, 1, 5, 12, 12, 3, 3,
346 3, 7, 12, 12, 10, 10, 10, 10, 14, 12, 10, 10, 10, 10, 10, 14,
347 9, 9, 9, 9, 13, 12, 9, 9, 9, 9, 13, 12, 9, 9, 9, 9,
348 13, 12, 9, 9, 9, 9, 13, 12, 11, 11, 11, 11, 7, 12, 10, 10,
349 10, 10, 10, 14, 9, 9, 9, 9, 9, 13, 9, 9, 9, 9, 9, 13,
350 9, 9, 9, 9, 9, 13, 9, 9, 9, 9, 9, 13, 9, 9, 9, 9,
351 9, 13, 11, 11, 11, 11, 11, 15, 0, 0, 0, 0, 0, 0, 8, 8,
352 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 15, 15, 15, 15, 15, 15
353 };
354
355 return (table[c & 0xff]);
356 }
357
358 /* Get colour by X11 colour name. */
359 int
colour_byname(const char * name)360 colour_byname(const char *name)
361 {
362 static const struct {
363 const char *name;
364 int c;
365 } colours[] = {
366 { "AliceBlue", 0xf0f8ff },
367 { "AntiqueWhite", 0xfaebd7 },
368 { "AntiqueWhite1", 0xffefdb },
369 { "AntiqueWhite2", 0xeedfcc },
370 { "AntiqueWhite3", 0xcdc0b0 },
371 { "AntiqueWhite4", 0x8b8378 },
372 { "BlanchedAlmond", 0xffebcd },
373 { "BlueViolet", 0x8a2be2 },
374 { "CadetBlue", 0x5f9ea0 },
375 { "CadetBlue1", 0x98f5ff },
376 { "CadetBlue2", 0x8ee5ee },
377 { "CadetBlue3", 0x7ac5cd },
378 { "CadetBlue4", 0x53868b },
379 { "CornflowerBlue", 0x6495ed },
380 { "DarkBlue", 0x00008b },
381 { "DarkCyan", 0x008b8b },
382 { "DarkGoldenrod", 0xb8860b },
383 { "DarkGoldenrod1", 0xffb90f },
384 { "DarkGoldenrod2", 0xeead0e },
385 { "DarkGoldenrod3", 0xcd950c },
386 { "DarkGoldenrod4", 0x8b6508 },
387 { "DarkGray", 0xa9a9a9 },
388 { "DarkGreen", 0x006400 },
389 { "DarkGrey", 0xa9a9a9 },
390 { "DarkKhaki", 0xbdb76b },
391 { "DarkMagenta", 0x8b008b },
392 { "DarkOliveGreen", 0x556b2f },
393 { "DarkOliveGreen1", 0xcaff70 },
394 { "DarkOliveGreen2", 0xbcee68 },
395 { "DarkOliveGreen3", 0xa2cd5a },
396 { "DarkOliveGreen4", 0x6e8b3d },
397 { "DarkOrange", 0xff8c00 },
398 { "DarkOrange1", 0xff7f00 },
399 { "DarkOrange2", 0xee7600 },
400 { "DarkOrange3", 0xcd6600 },
401 { "DarkOrange4", 0x8b4500 },
402 { "DarkOrchid", 0x9932cc },
403 { "DarkOrchid1", 0xbf3eff },
404 { "DarkOrchid2", 0xb23aee },
405 { "DarkOrchid3", 0x9a32cd },
406 { "DarkOrchid4", 0x68228b },
407 { "DarkRed", 0x8b0000 },
408 { "DarkSalmon", 0xe9967a },
409 { "DarkSeaGreen", 0x8fbc8f },
410 { "DarkSeaGreen1", 0xc1ffc1 },
411 { "DarkSeaGreen2", 0xb4eeb4 },
412 { "DarkSeaGreen3", 0x9bcd9b },
413 { "DarkSeaGreen4", 0x698b69 },
414 { "DarkSlateBlue", 0x483d8b },
415 { "DarkSlateGray", 0x2f4f4f },
416 { "DarkSlateGray1", 0x97ffff },
417 { "DarkSlateGray2", 0x8deeee },
418 { "DarkSlateGray3", 0x79cdcd },
419 { "DarkSlateGray4", 0x528b8b },
420 { "DarkSlateGrey", 0x2f4f4f },
421 { "DarkTurquoise", 0x00ced1 },
422 { "DarkViolet", 0x9400d3 },
423 { "DeepPink", 0xff1493 },
424 { "DeepPink1", 0xff1493 },
425 { "DeepPink2", 0xee1289 },
426 { "DeepPink3", 0xcd1076 },
427 { "DeepPink4", 0x8b0a50 },
428 { "DeepSkyBlue", 0x00bfff },
429 { "DeepSkyBlue1", 0x00bfff },
430 { "DeepSkyBlue2", 0x00b2ee },
431 { "DeepSkyBlue3", 0x009acd },
432 { "DeepSkyBlue4", 0x00688b },
433 { "DimGray", 0x696969 },
434 { "DimGrey", 0x696969 },
435 { "DodgerBlue", 0x1e90ff },
436 { "DodgerBlue1", 0x1e90ff },
437 { "DodgerBlue2", 0x1c86ee },
438 { "DodgerBlue3", 0x1874cd },
439 { "DodgerBlue4", 0x104e8b },
440 { "FloralWhite", 0xfffaf0 },
441 { "ForestGreen", 0x228b22 },
442 { "GhostWhite", 0xf8f8ff },
443 { "GreenYellow", 0xadff2f },
444 { "HotPink", 0xff69b4 },
445 { "HotPink1", 0xff6eb4 },
446 { "HotPink2", 0xee6aa7 },
447 { "HotPink3", 0xcd6090 },
448 { "HotPink4", 0x8b3a62 },
449 { "IndianRed", 0xcd5c5c },
450 { "IndianRed1", 0xff6a6a },
451 { "IndianRed2", 0xee6363 },
452 { "IndianRed3", 0xcd5555 },
453 { "IndianRed4", 0x8b3a3a },
454 { "LavenderBlush", 0xfff0f5 },
455 { "LavenderBlush1", 0xfff0f5 },
456 { "LavenderBlush2", 0xeee0e5 },
457 { "LavenderBlush3", 0xcdc1c5 },
458 { "LavenderBlush4", 0x8b8386 },
459 { "LawnGreen", 0x7cfc00 },
460 { "LemonChiffon", 0xfffacd },
461 { "LemonChiffon1", 0xfffacd },
462 { "LemonChiffon2", 0xeee9bf },
463 { "LemonChiffon3", 0xcdc9a5 },
464 { "LemonChiffon4", 0x8b8970 },
465 { "LightBlue", 0xadd8e6 },
466 { "LightBlue1", 0xbfefff },
467 { "LightBlue2", 0xb2dfee },
468 { "LightBlue3", 0x9ac0cd },
469 { "LightBlue4", 0x68838b },
470 { "LightCoral", 0xf08080 },
471 { "LightCyan", 0xe0ffff },
472 { "LightCyan1", 0xe0ffff },
473 { "LightCyan2", 0xd1eeee },
474 { "LightCyan3", 0xb4cdcd },
475 { "LightCyan4", 0x7a8b8b },
476 { "LightGoldenrod", 0xeedd82 },
477 { "LightGoldenrod1", 0xffec8b },
478 { "LightGoldenrod2", 0xeedc82 },
479 { "LightGoldenrod3", 0xcdbe70 },
480 { "LightGoldenrod4", 0x8b814c },
481 { "LightGoldenrodYellow", 0xfafad2 },
482 { "LightGray", 0xd3d3d3 },
483 { "LightGreen", 0x90ee90 },
484 { "LightGrey", 0xd3d3d3 },
485 { "LightPink", 0xffb6c1 },
486 { "LightPink1", 0xffaeb9 },
487 { "LightPink2", 0xeea2ad },
488 { "LightPink3", 0xcd8c95 },
489 { "LightPink4", 0x8b5f65 },
490 { "LightSalmon", 0xffa07a },
491 { "LightSalmon1", 0xffa07a },
492 { "LightSalmon2", 0xee9572 },
493 { "LightSalmon3", 0xcd8162 },
494 { "LightSalmon4", 0x8b5742 },
495 { "LightSeaGreen", 0x20b2aa },
496 { "LightSkyBlue", 0x87cefa },
497 { "LightSkyBlue1", 0xb0e2ff },
498 { "LightSkyBlue2", 0xa4d3ee },
499 { "LightSkyBlue3", 0x8db6cd },
500 { "LightSkyBlue4", 0x607b8b },
501 { "LightSlateBlue", 0x8470ff },
502 { "LightSlateGray", 0x778899 },
503 { "LightSlateGrey", 0x778899 },
504 { "LightSteelBlue", 0xb0c4de },
505 { "LightSteelBlue1", 0xcae1ff },
506 { "LightSteelBlue2", 0xbcd2ee },
507 { "LightSteelBlue3", 0xa2b5cd },
508 { "LightSteelBlue4", 0x6e7b8b },
509 { "LightYellow", 0xffffe0 },
510 { "LightYellow1", 0xffffe0 },
511 { "LightYellow2", 0xeeeed1 },
512 { "LightYellow3", 0xcdcdb4 },
513 { "LightYellow4", 0x8b8b7a },
514 { "LimeGreen", 0x32cd32 },
515 { "MediumAquamarine", 0x66cdaa },
516 { "MediumBlue", 0x0000cd },
517 { "MediumOrchid", 0xba55d3 },
518 { "MediumOrchid1", 0xe066ff },
519 { "MediumOrchid2", 0xd15fee },
520 { "MediumOrchid3", 0xb452cd },
521 { "MediumOrchid4", 0x7a378b },
522 { "MediumPurple", 0x9370db },
523 { "MediumPurple1", 0xab82ff },
524 { "MediumPurple2", 0x9f79ee },
525 { "MediumPurple3", 0x8968cd },
526 { "MediumPurple4", 0x5d478b },
527 { "MediumSeaGreen", 0x3cb371 },
528 { "MediumSlateBlue", 0x7b68ee },
529 { "MediumSpringGreen", 0x00fa9a },
530 { "MediumTurquoise", 0x48d1cc },
531 { "MediumVioletRed", 0xc71585 },
532 { "MidnightBlue", 0x191970 },
533 { "MintCream", 0xf5fffa },
534 { "MistyRose", 0xffe4e1 },
535 { "MistyRose1", 0xffe4e1 },
536 { "MistyRose2", 0xeed5d2 },
537 { "MistyRose3", 0xcdb7b5 },
538 { "MistyRose4", 0x8b7d7b },
539 { "NavajoWhite", 0xffdead },
540 { "NavajoWhite1", 0xffdead },
541 { "NavajoWhite2", 0xeecfa1 },
542 { "NavajoWhite3", 0xcdb38b },
543 { "NavajoWhite4", 0x8b795e },
544 { "NavyBlue", 0x000080 },
545 { "OldLace", 0xfdf5e6 },
546 { "OliveDrab", 0x6b8e23 },
547 { "OliveDrab1", 0xc0ff3e },
548 { "OliveDrab2", 0xb3ee3a },
549 { "OliveDrab3", 0x9acd32 },
550 { "OliveDrab4", 0x698b22 },
551 { "OrangeRed", 0xff4500 },
552 { "OrangeRed1", 0xff4500 },
553 { "OrangeRed2", 0xee4000 },
554 { "OrangeRed3", 0xcd3700 },
555 { "OrangeRed4", 0x8b2500 },
556 { "PaleGoldenrod", 0xeee8aa },
557 { "PaleGreen", 0x98fb98 },
558 { "PaleGreen1", 0x9aff9a },
559 { "PaleGreen2", 0x90ee90 },
560 { "PaleGreen3", 0x7ccd7c },
561 { "PaleGreen4", 0x548b54 },
562 { "PaleTurquoise", 0xafeeee },
563 { "PaleTurquoise1", 0xbbffff },
564 { "PaleTurquoise2", 0xaeeeee },
565 { "PaleTurquoise3", 0x96cdcd },
566 { "PaleTurquoise4", 0x668b8b },
567 { "PaleVioletRed", 0xdb7093 },
568 { "PaleVioletRed1", 0xff82ab },
569 { "PaleVioletRed2", 0xee799f },
570 { "PaleVioletRed3", 0xcd6889 },
571 { "PaleVioletRed4", 0x8b475d },
572 { "PapayaWhip", 0xffefd5 },
573 { "PeachPuff", 0xffdab9 },
574 { "PeachPuff1", 0xffdab9 },
575 { "PeachPuff2", 0xeecbad },
576 { "PeachPuff3", 0xcdaf95 },
577 { "PeachPuff4", 0x8b7765 },
578 { "PowderBlue", 0xb0e0e6 },
579 { "RebeccaPurple", 0x663399 },
580 { "RosyBrown", 0xbc8f8f },
581 { "RosyBrown1", 0xffc1c1 },
582 { "RosyBrown2", 0xeeb4b4 },
583 { "RosyBrown3", 0xcd9b9b },
584 { "RosyBrown4", 0x8b6969 },
585 { "RoyalBlue", 0x4169e1 },
586 { "RoyalBlue1", 0x4876ff },
587 { "RoyalBlue2", 0x436eee },
588 { "RoyalBlue3", 0x3a5fcd },
589 { "RoyalBlue4", 0x27408b },
590 { "SaddleBrown", 0x8b4513 },
591 { "SandyBrown", 0xf4a460 },
592 { "SeaGreen", 0x2e8b57 },
593 { "SeaGreen1", 0x54ff9f },
594 { "SeaGreen2", 0x4eee94 },
595 { "SeaGreen3", 0x43cd80 },
596 { "SeaGreen4", 0x2e8b57 },
597 { "SkyBlue", 0x87ceeb },
598 { "SkyBlue1", 0x87ceff },
599 { "SkyBlue2", 0x7ec0ee },
600 { "SkyBlue3", 0x6ca6cd },
601 { "SkyBlue4", 0x4a708b },
602 { "SlateBlue", 0x6a5acd },
603 { "SlateBlue1", 0x836fff },
604 { "SlateBlue2", 0x7a67ee },
605 { "SlateBlue3", 0x6959cd },
606 { "SlateBlue4", 0x473c8b },
607 { "SlateGray", 0x708090 },
608 { "SlateGray1", 0xc6e2ff },
609 { "SlateGray2", 0xb9d3ee },
610 { "SlateGray3", 0x9fb6cd },
611 { "SlateGray4", 0x6c7b8b },
612 { "SlateGrey", 0x708090 },
613 { "SpringGreen", 0x00ff7f },
614 { "SpringGreen1", 0x00ff7f },
615 { "SpringGreen2", 0x00ee76 },
616 { "SpringGreen3", 0x00cd66 },
617 { "SpringGreen4", 0x008b45 },
618 { "SteelBlue", 0x4682b4 },
619 { "SteelBlue1", 0x63b8ff },
620 { "SteelBlue2", 0x5cacee },
621 { "SteelBlue3", 0x4f94cd },
622 { "SteelBlue4", 0x36648b },
623 { "VioletRed", 0xd02090 },
624 { "VioletRed1", 0xff3e96 },
625 { "VioletRed2", 0xee3a8c },
626 { "VioletRed3", 0xcd3278 },
627 { "VioletRed4", 0x8b2252 },
628 { "WebGray", 0x808080 },
629 { "WebGreen", 0x008000 },
630 { "WebGrey", 0x808080 },
631 { "WebMaroon", 0x800000 },
632 { "WebPurple", 0x800080 },
633 { "WhiteSmoke", 0xf5f5f5 },
634 { "X11Gray", 0xbebebe },
635 { "X11Green", 0x00ff00 },
636 { "X11Grey", 0xbebebe },
637 { "X11Maroon", 0xb03060 },
638 { "X11Purple", 0xa020f0 },
639 { "YellowGreen", 0x9acd32 },
640 { "alice blue", 0xf0f8ff },
641 { "antique white", 0xfaebd7 },
642 { "aqua", 0x00ffff },
643 { "aquamarine", 0x7fffd4 },
644 { "aquamarine1", 0x7fffd4 },
645 { "aquamarine2", 0x76eec6 },
646 { "aquamarine3", 0x66cdaa },
647 { "aquamarine4", 0x458b74 },
648 { "azure", 0xf0ffff },
649 { "azure1", 0xf0ffff },
650 { "azure2", 0xe0eeee },
651 { "azure3", 0xc1cdcd },
652 { "azure4", 0x838b8b },
653 { "beige", 0xf5f5dc },
654 { "bisque", 0xffe4c4 },
655 { "bisque1", 0xffe4c4 },
656 { "bisque2", 0xeed5b7 },
657 { "bisque3", 0xcdb79e },
658 { "bisque4", 0x8b7d6b },
659 { "black", 0x000000 },
660 { "blanched almond", 0xffebcd },
661 { "blue violet", 0x8a2be2 },
662 { "blue", 0x0000ff },
663 { "blue1", 0x0000ff },
664 { "blue2", 0x0000ee },
665 { "blue3", 0x0000cd },
666 { "blue4", 0x00008b },
667 { "brown", 0xa52a2a },
668 { "brown1", 0xff4040 },
669 { "brown2", 0xee3b3b },
670 { "brown3", 0xcd3333 },
671 { "brown4", 0x8b2323 },
672 { "burlywood", 0xdeb887 },
673 { "burlywood1", 0xffd39b },
674 { "burlywood2", 0xeec591 },
675 { "burlywood3", 0xcdaa7d },
676 { "burlywood4", 0x8b7355 },
677 { "cadet blue", 0x5f9ea0 },
678 { "chartreuse", 0x7fff00 },
679 { "chartreuse1", 0x7fff00 },
680 { "chartreuse2", 0x76ee00 },
681 { "chartreuse3", 0x66cd00 },
682 { "chartreuse4", 0x458b00 },
683 { "chocolate", 0xd2691e },
684 { "chocolate1", 0xff7f24 },
685 { "chocolate2", 0xee7621 },
686 { "chocolate3", 0xcd661d },
687 { "chocolate4", 0x8b4513 },
688 { "coral", 0xff7f50 },
689 { "coral1", 0xff7256 },
690 { "coral2", 0xee6a50 },
691 { "coral3", 0xcd5b45 },
692 { "coral4", 0x8b3e2f },
693 { "cornflower blue", 0x6495ed },
694 { "cornsilk", 0xfff8dc },
695 { "cornsilk1", 0xfff8dc },
696 { "cornsilk2", 0xeee8cd },
697 { "cornsilk3", 0xcdc8b1 },
698 { "cornsilk4", 0x8b8878 },
699 { "crimson", 0xdc143c },
700 { "cyan", 0x00ffff },
701 { "cyan1", 0x00ffff },
702 { "cyan2", 0x00eeee },
703 { "cyan3", 0x00cdcd },
704 { "cyan4", 0x008b8b },
705 { "dark blue", 0x00008b },
706 { "dark cyan", 0x008b8b },
707 { "dark goldenrod", 0xb8860b },
708 { "dark gray", 0xa9a9a9 },
709 { "dark green", 0x006400 },
710 { "dark grey", 0xa9a9a9 },
711 { "dark khaki", 0xbdb76b },
712 { "dark magenta", 0x8b008b },
713 { "dark olive green", 0x556b2f },
714 { "dark orange", 0xff8c00 },
715 { "dark orchid", 0x9932cc },
716 { "dark red", 0x8b0000 },
717 { "dark salmon", 0xe9967a },
718 { "dark sea green", 0x8fbc8f },
719 { "dark slate blue", 0x483d8b },
720 { "dark slate gray", 0x2f4f4f },
721 { "dark slate grey", 0x2f4f4f },
722 { "dark turquoise", 0x00ced1 },
723 { "dark violet", 0x9400d3 },
724 { "deep pink", 0xff1493 },
725 { "deep sky blue", 0x00bfff },
726 { "dim gray", 0x696969 },
727 { "dim grey", 0x696969 },
728 { "dodger blue", 0x1e90ff },
729 { "firebrick", 0xb22222 },
730 { "firebrick1", 0xff3030 },
731 { "firebrick2", 0xee2c2c },
732 { "firebrick3", 0xcd2626 },
733 { "firebrick4", 0x8b1a1a },
734 { "floral white", 0xfffaf0 },
735 { "forest green", 0x228b22 },
736 { "fuchsia", 0xff00ff },
737 { "gainsboro", 0xdcdcdc },
738 { "ghost white", 0xf8f8ff },
739 { "gold", 0xffd700 },
740 { "gold1", 0xffd700 },
741 { "gold2", 0xeec900 },
742 { "gold3", 0xcdad00 },
743 { "gold4", 0x8b7500 },
744 { "goldenrod", 0xdaa520 },
745 { "goldenrod1", 0xffc125 },
746 { "goldenrod2", 0xeeb422 },
747 { "goldenrod3", 0xcd9b1d },
748 { "goldenrod4", 0x8b6914 },
749 { "green yellow", 0xadff2f },
750 { "green", 0x00ff00 },
751 { "green1", 0x00ff00 },
752 { "green2", 0x00ee00 },
753 { "green3", 0x00cd00 },
754 { "green4", 0x008b00 },
755 { "honeydew", 0xf0fff0 },
756 { "honeydew1", 0xf0fff0 },
757 { "honeydew2", 0xe0eee0 },
758 { "honeydew3", 0xc1cdc1 },
759 { "honeydew4", 0x838b83 },
760 { "hot pink", 0xff69b4 },
761 { "indian red", 0xcd5c5c },
762 { "indigo", 0x4b0082 },
763 { "ivory", 0xfffff0 },
764 { "ivory1", 0xfffff0 },
765 { "ivory2", 0xeeeee0 },
766 { "ivory3", 0xcdcdc1 },
767 { "ivory4", 0x8b8b83 },
768 { "khaki", 0xf0e68c },
769 { "khaki1", 0xfff68f },
770 { "khaki2", 0xeee685 },
771 { "khaki3", 0xcdc673 },
772 { "khaki4", 0x8b864e },
773 { "lavender blush", 0xfff0f5 },
774 { "lavender", 0xe6e6fa },
775 { "lawn green", 0x7cfc00 },
776 { "lemon chiffon", 0xfffacd },
777 { "light blue", 0xadd8e6 },
778 { "light coral", 0xf08080 },
779 { "light cyan", 0xe0ffff },
780 { "light goldenrod yellow", 0xfafad2 },
781 { "light goldenrod", 0xeedd82 },
782 { "light gray", 0xd3d3d3 },
783 { "light green", 0x90ee90 },
784 { "light grey", 0xd3d3d3 },
785 { "light pink", 0xffb6c1 },
786 { "light salmon", 0xffa07a },
787 { "light sea green", 0x20b2aa },
788 { "light sky blue", 0x87cefa },
789 { "light slate blue", 0x8470ff },
790 { "light slate gray", 0x778899 },
791 { "light slate grey", 0x778899 },
792 { "light steel blue", 0xb0c4de },
793 { "light yellow", 0xffffe0 },
794 { "lime green", 0x32cd32 },
795 { "lime", 0x00ff00 },
796 { "linen", 0xfaf0e6 },
797 { "magenta", 0xff00ff },
798 { "magenta1", 0xff00ff },
799 { "magenta2", 0xee00ee },
800 { "magenta3", 0xcd00cd },
801 { "magenta4", 0x8b008b },
802 { "maroon", 0xb03060 },
803 { "maroon1", 0xff34b3 },
804 { "maroon2", 0xee30a7 },
805 { "maroon3", 0xcd2990 },
806 { "maroon4", 0x8b1c62 },
807 { "medium aquamarine", 0x66cdaa },
808 { "medium blue", 0x0000cd },
809 { "medium orchid", 0xba55d3 },
810 { "medium purple", 0x9370db },
811 { "medium sea green", 0x3cb371 },
812 { "medium slate blue", 0x7b68ee },
813 { "medium spring green", 0x00fa9a },
814 { "medium turquoise", 0x48d1cc },
815 { "medium violet red", 0xc71585 },
816 { "midnight blue", 0x191970 },
817 { "mint cream", 0xf5fffa },
818 { "misty rose", 0xffe4e1 },
819 { "moccasin", 0xffe4b5 },
820 { "navajo white", 0xffdead },
821 { "navy blue", 0x000080 },
822 { "navy", 0x000080 },
823 { "old lace", 0xfdf5e6 },
824 { "olive drab", 0x6b8e23 },
825 { "olive", 0x808000 },
826 { "orange red", 0xff4500 },
827 { "orange", 0xffa500 },
828 { "orange1", 0xffa500 },
829 { "orange2", 0xee9a00 },
830 { "orange3", 0xcd8500 },
831 { "orange4", 0x8b5a00 },
832 { "orchid", 0xda70d6 },
833 { "orchid1", 0xff83fa },
834 { "orchid2", 0xee7ae9 },
835 { "orchid3", 0xcd69c9 },
836 { "orchid4", 0x8b4789 },
837 { "pale goldenrod", 0xeee8aa },
838 { "pale green", 0x98fb98 },
839 { "pale turquoise", 0xafeeee },
840 { "pale violet red", 0xdb7093 },
841 { "papaya whip", 0xffefd5 },
842 { "peach puff", 0xffdab9 },
843 { "peru", 0xcd853f },
844 { "pink", 0xffc0cb },
845 { "pink1", 0xffb5c5 },
846 { "pink2", 0xeea9b8 },
847 { "pink3", 0xcd919e },
848 { "pink4", 0x8b636c },
849 { "plum", 0xdda0dd },
850 { "plum1", 0xffbbff },
851 { "plum2", 0xeeaeee },
852 { "plum3", 0xcd96cd },
853 { "plum4", 0x8b668b },
854 { "powder blue", 0xb0e0e6 },
855 { "purple", 0xa020f0 },
856 { "purple1", 0x9b30ff },
857 { "purple2", 0x912cee },
858 { "purple3", 0x7d26cd },
859 { "purple4", 0x551a8b },
860 { "rebecca purple", 0x663399 },
861 { "red", 0xff0000 },
862 { "red1", 0xff0000 },
863 { "red2", 0xee0000 },
864 { "red3", 0xcd0000 },
865 { "red4", 0x8b0000 },
866 { "rosy brown", 0xbc8f8f },
867 { "royal blue", 0x4169e1 },
868 { "saddle brown", 0x8b4513 },
869 { "salmon", 0xfa8072 },
870 { "salmon1", 0xff8c69 },
871 { "salmon2", 0xee8262 },
872 { "salmon3", 0xcd7054 },
873 { "salmon4", 0x8b4c39 },
874 { "sandy brown", 0xf4a460 },
875 { "sea green", 0x2e8b57 },
876 { "seashell", 0xfff5ee },
877 { "seashell1", 0xfff5ee },
878 { "seashell2", 0xeee5de },
879 { "seashell3", 0xcdc5bf },
880 { "seashell4", 0x8b8682 },
881 { "sienna", 0xa0522d },
882 { "sienna1", 0xff8247 },
883 { "sienna2", 0xee7942 },
884 { "sienna3", 0xcd6839 },
885 { "sienna4", 0x8b4726 },
886 { "silver", 0xc0c0c0 },
887 { "sky blue", 0x87ceeb },
888 { "slate blue", 0x6a5acd },
889 { "slate gray", 0x708090 },
890 { "slate grey", 0x708090 },
891 { "snow", 0xfffafa },
892 { "snow1", 0xfffafa },
893 { "snow2", 0xeee9e9 },
894 { "snow3", 0xcdc9c9 },
895 { "snow4", 0x8b8989 },
896 { "spring green", 0x00ff7f },
897 { "steel blue", 0x4682b4 },
898 { "tan", 0xd2b48c },
899 { "tan1", 0xffa54f },
900 { "tan2", 0xee9a49 },
901 { "tan3", 0xcd853f },
902 { "tan4", 0x8b5a2b },
903 { "teal", 0x008080 },
904 { "thistle", 0xd8bfd8 },
905 { "thistle1", 0xffe1ff },
906 { "thistle2", 0xeed2ee },
907 { "thistle3", 0xcdb5cd },
908 { "thistle4", 0x8b7b8b },
909 { "tomato", 0xff6347 },
910 { "tomato1", 0xff6347 },
911 { "tomato2", 0xee5c42 },
912 { "tomato3", 0xcd4f39 },
913 { "tomato4", 0x8b3626 },
914 { "turquoise", 0x40e0d0 },
915 { "turquoise1", 0x00f5ff },
916 { "turquoise2", 0x00e5ee },
917 { "turquoise3", 0x00c5cd },
918 { "turquoise4", 0x00868b },
919 { "violet red", 0xd02090 },
920 { "violet", 0xee82ee },
921 { "web gray", 0x808080 },
922 { "web green", 0x008000 },
923 { "web grey", 0x808080 },
924 { "web maroon", 0x800000 },
925 { "web purple", 0x800080 },
926 { "wheat", 0xf5deb3 },
927 { "wheat1", 0xffe7ba },
928 { "wheat2", 0xeed8ae },
929 { "wheat3", 0xcdba96 },
930 { "wheat4", 0x8b7e66 },
931 { "white smoke", 0xf5f5f5 },
932 { "white", 0xffffff },
933 { "x11 gray", 0xbebebe },
934 { "x11 green", 0x00ff00 },
935 { "x11 grey", 0xbebebe },
936 { "x11 maroon", 0xb03060 },
937 { "x11 purple", 0xa020f0 },
938 { "yellow green", 0x9acd32 },
939 { "yellow", 0xffff00 },
940 { "yellow1", 0xffff00 },
941 { "yellow2", 0xeeee00 },
942 { "yellow3", 0xcdcd00 },
943 { "yellow4", 0x8b8b00 }
944 };
945 u_int i;
946 int c;
947 const char *errstr;
948
949 if (strncmp(name, "grey", 4) == 0 || strncmp(name, "gray", 4) == 0) {
950 if (name[4] == '\0')
951 return (0xbebebe|COLOUR_FLAG_RGB);
952 c = strtonum(name + 4, 0, 100, &errstr);
953 if (errstr != NULL)
954 return (-1);
955 c = round(2.55 * c);
956 if (c < 0 || c > 255)
957 return (-1);
958 return (colour_join_rgb(c, c, c));
959 }
960 for (i = 0; i < nitems(colours); i++) {
961 if (strcasecmp(colours[i].name, name) == 0)
962 return (colours[i].c|COLOUR_FLAG_RGB);
963 }
964 return (-1);
965 }
966
967 /* Parse colour from an X11 string. */
968 int
colour_parseX11(const char * p)969 colour_parseX11(const char *p)
970 {
971 double c, m, y, k = 0;
972 u_int r, g, b;
973 size_t len = strlen(p);
974 int colour = -1;
975 char *copy;
976
977 if ((len == 12 && sscanf(p, "rgb:%02x/%02x/%02x", &r, &g, &b) == 3) ||
978 (len == 7 && sscanf(p, "#%02x%02x%02x", &r, &g, &b) == 3) ||
979 sscanf(p, "%d,%d,%d", &r, &g, &b) == 3)
980 colour = colour_join_rgb(r, g, b);
981 else if ((len == 18 &&
982 sscanf(p, "rgb:%04x/%04x/%04x", &r, &g, &b) == 3) ||
983 (len == 13 && sscanf(p, "#%04x%04x%04x", &r, &g, &b) == 3))
984 colour = colour_join_rgb(r >> 8, g >> 8, b >> 8);
985 else if ((sscanf(p, "cmyk:%lf/%lf/%lf/%lf", &c, &m, &y, &k) == 4 ||
986 sscanf(p, "cmy:%lf/%lf/%lf", &c, &m, &y) == 3) &&
987 c >= 0 && c <= 1 && m >= 0 && m <= 1 &&
988 y >= 0 && y <= 1 && k >= 0 && k <= 1) {
989 colour = colour_join_rgb(
990 (1 - c) * (1 - k) * 255,
991 (1 - m) * (1 - k) * 255,
992 (1 - y) * (1 - k) * 255);
993 } else {
994 while (len != 0 && *p == ' ') {
995 p++;
996 len--;
997 }
998 while (len != 0 && p[len - 1] == ' ')
999 len--;
1000 copy = xstrndup(p, len);
1001 colour = colour_byname(copy);
1002 free(copy);
1003 }
1004 log_debug("%s: %s = %s", __func__, p, colour_tostring(colour));
1005 return (colour);
1006 }
1007
1008 /* Initialize palette. */
1009 void
colour_palette_init(struct colour_palette * p)1010 colour_palette_init(struct colour_palette *p)
1011 {
1012 p->fg = 8;
1013 p->bg = 8;
1014 p->palette = NULL;
1015 p->default_palette = NULL;
1016 }
1017
1018 /* Clear palette. */
1019 void
colour_palette_clear(struct colour_palette * p)1020 colour_palette_clear(struct colour_palette *p)
1021 {
1022 if (p != NULL) {
1023 p->fg = 8;
1024 p->bg = 8;
1025 free(p->palette);
1026 p->palette = NULL;
1027 }
1028 }
1029
1030 /* Free a palette. */
1031 void
colour_palette_free(struct colour_palette * p)1032 colour_palette_free(struct colour_palette *p)
1033 {
1034 if (p != NULL) {
1035 free(p->palette);
1036 p->palette = NULL;
1037 free(p->default_palette);
1038 p->default_palette = NULL;
1039 }
1040 }
1041
1042 /* Get a colour from a palette. */
1043 int
colour_palette_get(struct colour_palette * p,int c)1044 colour_palette_get(struct colour_palette *p, int c)
1045 {
1046 if (p == NULL)
1047 return (-1);
1048
1049 if (c >= 90 && c <= 97)
1050 c = 8 + c - 90;
1051 else if (c & COLOUR_FLAG_256)
1052 c &= ~COLOUR_FLAG_256;
1053 else if (c >= 8)
1054 return (-1);
1055
1056 if (p->palette != NULL && p->palette[c] != -1)
1057 return (p->palette[c]);
1058 if (p->default_palette != NULL && p->default_palette[c] != -1)
1059 return (p->default_palette[c]);
1060 return (-1);
1061 }
1062
1063 /* Set a colour in a palette. */
1064 int
colour_palette_set(struct colour_palette * p,int n,int c)1065 colour_palette_set(struct colour_palette *p, int n, int c)
1066 {
1067 u_int i;
1068
1069 if (p == NULL || n > 255)
1070 return (0);
1071
1072 if (c == -1 && p->palette == NULL)
1073 return (0);
1074
1075 if (c != -1 && p->palette == NULL) {
1076 if (p->palette == NULL)
1077 p->palette = xcalloc(256, sizeof *p->palette);
1078 for (i = 0; i < 256; i++)
1079 p->palette[i] = -1;
1080 }
1081 p->palette[n] = c;
1082 return (1);
1083 }
1084
1085 /* Build palette defaults from an option. */
1086 void
colour_palette_from_option(struct colour_palette * p,struct options * oo)1087 colour_palette_from_option(struct colour_palette *p, struct options *oo)
1088 {
1089 struct options_entry *o;
1090 struct options_array_item *a;
1091 u_int i, n;
1092 int c;
1093
1094 if (p == NULL)
1095 return;
1096
1097 o = options_get(oo, "pane-colours");
1098 if ((a = options_array_first(o)) == NULL) {
1099 if (p->default_palette != NULL) {
1100 free(p->default_palette);
1101 p->default_palette = NULL;
1102 }
1103 return;
1104 }
1105 if (p->default_palette == NULL)
1106 p->default_palette = xcalloc(256, sizeof *p->default_palette);
1107 for (i = 0; i < 256; i++)
1108 p->default_palette[i] = -1;
1109 while (a != NULL) {
1110 n = options_array_item_index(a);
1111 if (n < 256) {
1112 c = options_array_item_value(a)->number;
1113 p->default_palette[n] = c;
1114 }
1115 a = options_array_next(a);
1116 }
1117 }
1118