1 /*
2 * (c) 2004 by Kalle Wallin (kaw@linux.se)
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 * You should have received a copy of the GNU General Public License
14 * along with this program; if not, write to the Free Software
15 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
16 *
17 */
19 #include <stdio.h>
20 #include <stdlib.h>
21 #include <string.h>
22 #include <ncurses.h>
23 #include <glib.h>
25 #include "config.h"
26 #include "options.h"
27 #include "support.h"
28 #include "colors.h"
30 #ifdef DEBUG
31 #define D(x) x
32 #else
33 #define D(x)
34 #endif
36 #define COLOR_BRIGHT_MASK (1<<7)
38 #define COLOR_BRIGHT_BLACK (COLOR_BLACK | COLOR_BRIGHT_MASK)
39 #define COLOR_BRIGHT_RED (COLOR_RED | COLOR_BRIGHT_MASK)
40 #define COLOR_BRIGHT_GREEN (COLOR_GREEN | COLOR_BRIGHT_MASK)
41 #define COLOR_BRIGHT_YELLOW (COLOR_YELLOW | COLOR_BRIGHT_MASK)
42 #define COLOR_BRIGHT_BLUE (COLOR_BLUE | COLOR_BRIGHT_MASK)
43 #define COLOR_BRIGHT_MAGENTA (COLOR_MAGENTA | COLOR_BRIGHT_MASK)
44 #define COLOR_BRIGHT_CYAN (COLOR_CYAN | COLOR_BRIGHT_MASK)
45 #define COLOR_BRIGHT_WHITE (COLOR_WHITE | COLOR_BRIGHT_MASK)
47 #define IS_BRIGHT(color) (color & COLOR_BRIGHT_MASK)
49 /* name of the color fields */
50 #define NAME_TITLE "title"
51 #define NAME_TITLE_BOLD "title-bold"
52 #define NAME_LINE "line"
53 #define NAME_LINE_BOLD "line-flags"
54 #define NAME_LIST "list"
55 #define NAME_LIST_BOLD "list-bold"
56 #define NAME_PROGRESS "progressbar"
57 #define NAME_STATUS "status-song"
58 #define NAME_STATUS_BOLD "status-state"
59 #define NAME_STATUS_TIME "status-time"
60 #define NAME_ALERT "alert"
61 #define NAME_BGCOLOR "background"
63 typedef struct {
64 short color;
65 short r,g,b;
66 } color_definition_entry_t;
68 typedef struct {
69 int id;
70 char *name;
71 short fg;
72 attr_t attrs;
73 } color_entry_t;
75 static color_entry_t colors[] = {
77 /* color pair, field name, color, mono attribute */
78 /*-------------------------------------------------------------------------*/
79 { COLOR_TITLE, NAME_TITLE, COLOR_YELLOW, A_NORMAL },
80 { COLOR_TITLE_BOLD, NAME_TITLE_BOLD, COLOR_BRIGHT_YELLOW, A_BOLD },
81 { COLOR_LINE, NAME_LINE, COLOR_WHITE, A_NORMAL },
82 { COLOR_LINE_BOLD, NAME_LINE_BOLD, COLOR_BRIGHT_WHITE, A_BOLD },
83 { COLOR_LIST, NAME_LIST, COLOR_GREEN, A_NORMAL },
84 { COLOR_LIST_BOLD, NAME_LIST_BOLD, COLOR_BRIGHT_GREEN, A_BOLD },
85 { COLOR_PROGRESSBAR, NAME_PROGRESS, COLOR_WHITE, A_NORMAL },
86 { COLOR_STATUS, NAME_STATUS, COLOR_YELLOW, A_NORMAL },
87 { COLOR_STATUS_BOLD, NAME_STATUS_BOLD, COLOR_BRIGHT_YELLOW, A_BOLD },
88 { COLOR_STATUS_TIME, NAME_STATUS_TIME, COLOR_RED, A_NORMAL },
89 { COLOR_STATUS_ALERT, NAME_ALERT, COLOR_BRIGHT_RED, A_BOLD },
90 { 0, NULL, 0, 0 }
91 };
93 /* background color */
94 static short bg = COLOR_BLACK;
96 static GList *color_definition_list = NULL;
98 static color_entry_t *
99 colors_lookup(int id)
100 {
101 int i;
103 i=0;
104 while( colors[i].name != NULL )
105 {
106 if( colors[i].id == id )
107 return &colors[i];
108 i++;
109 }
110 return NULL;
111 }
113 static color_entry_t *
114 colors_lookup_by_name(char *name)
115 {
116 int i;
118 i=0;
119 while( colors[i].name != NULL )
120 {
121 if( !strcasecmp(colors[i].name, name) )
122 return &colors[i];
123 i++;
124 }
125 return NULL;
126 }
128 static int
129 colors_update_pair(int id)
130 {
131 color_entry_t *entry = colors_lookup(id);
132 short fg = -1;
134 if( !entry )
135 return -1;
137 if( IS_BRIGHT(entry->fg) )
138 {
139 entry->attrs = A_BOLD;
140 fg = entry->fg & ~COLOR_BRIGHT_MASK;
141 }
142 else
143 {
144 entry->attrs = A_NORMAL;
145 fg = entry->fg;
146 }
148 init_pair(entry->id, fg, bg);
150 return 0;
151 }
153 short
154 colors_str2color(char *str)
155 {
156 if( !strcasecmp(str,"black") )
157 return COLOR_BLACK;
158 else if( !strcasecmp(str,"red") )
159 return COLOR_RED;
160 else if( !strcasecmp(str,"green") )
161 return COLOR_GREEN;
162 else if( !strcasecmp(str,"yellow") )
163 return COLOR_YELLOW;
164 else if( !strcasecmp(str,"blue") )
165 return COLOR_BLUE;
166 else if( !strcasecmp(str,"magenta") )
167 return COLOR_MAGENTA;
168 else if( !strcasecmp(str,"cyan") )
169 return COLOR_CYAN;
170 else if( !strcasecmp(str,"white") )
171 return COLOR_WHITE;
172 else if( !strcasecmp(str,"brightred") )
173 return COLOR_BRIGHT_RED;
174 else if( !strcasecmp(str,"brightgreen") )
175 return COLOR_BRIGHT_GREEN;
176 else if( !strcasecmp(str,"brightyellow") )
177 return COLOR_BRIGHT_YELLOW;
178 else if( !strcasecmp(str,"brightblue") )
179 return COLOR_BRIGHT_BLUE;
180 else if( !strcasecmp(str,"brightmagenta") )
181 return COLOR_BRIGHT_MAGENTA;
182 else if( !strcasecmp(str,"brightcyan") )
183 return COLOR_BRIGHT_CYAN;
184 else if( !strcasecmp(str,"brightwhite") )
185 return COLOR_BRIGHT_WHITE;
186 else if( !strcasecmp(str,"grey") || !strcasecmp(str,"gray") )
187 return COLOR_BRIGHT_BLACK;
188 else if( !strcasecmp(str,"none") )
189 return -1;
190 fprintf(stderr,"Warning: Unknown color - %s\n", str);
191 return -2;
192 }
194 /* This function is called from conf.c before curses have been started,
195 * it adds the definition to the color_definition_list and init_color() is
196 * done in colors_start() */
197 int
198 colors_define(char *name, short r, short g, short b)
199 {
200 color_definition_entry_t *entry;
201 short color = colors_str2color(name);
203 if( color<0 )
204 return -1;
206 entry = g_malloc(sizeof(color_definition_entry_t));
207 entry->color = color;
208 entry->r = r;
209 entry->g = g;
210 entry->b = b;
212 color_definition_list = g_list_append(color_definition_list, entry);
214 return 0;
215 }
218 int
219 colors_assign(char *name, char *value)
220 {
221 color_entry_t *entry = colors_lookup_by_name(name);
222 short color;
224 if( !entry )
225 {
226 if( !strcasecmp(NAME_BGCOLOR, name) )
227 {
228 if( (color=colors_str2color(value)) < -1 )
229 return -1;
230 if( color > COLORS )
231 color = color & ~COLOR_BRIGHT_MASK;
232 bg = color;
233 return 0;
234 }
235 fprintf(stderr,"Warning: Unknown color field - %s\n", name);
236 return -1;
237 }
239 if( (color=colors_str2color(value)) < -1 )
240 return -1;
241 entry->fg = color;
243 return 0;
244 }
247 int
248 colors_start(void)
249 {
250 if( has_colors() )
251 {
252 /* initialize color support */
253 start_color();
254 use_default_colors();
255 /* define any custom colors defined in the configuration file */
256 if( color_definition_list && can_change_color() )
257 {
258 GList *list = color_definition_list;
260 while( list )
261 {
262 color_definition_entry_t *entry = list->data;
264 if( entry->color <= COLORS )
265 init_color(entry->color, entry->r, entry->g, entry->b);
266 list=list->next;
267 }
268 }
269 else if( !can_change_color() )
270 fprintf(stderr, "Terminal lacks support for changing colors!\n");
272 if( options.enable_colors )
273 {
274 int i = 0;
276 while(colors[i].name)
277 {
278 /* update the color pairs */
279 colors_update_pair(colors[i].id);
280 i++;
281 }
283 }
284 }
285 else if( options.enable_colors )
286 {
287 fprintf(stderr, "Terminal lacks color capabilities!\n");
288 options.enable_colors = 0;
289 }
291 /* free the color_definition_list */
292 if( color_definition_list )
293 {
294 GList *list = color_definition_list;
296 while( list )
297 {
298 g_free(list->data);
299 list=list->next;
300 }
301 g_list_free(color_definition_list);
302 color_definition_list = NULL;
303 }
305 return 0;
306 }
309 int
310 colors_use(WINDOW *w, int id)
311 {
312 color_entry_t *entry = colors_lookup(id);
313 short pair;
314 attr_t attrs;
316 if( !entry )
317 return -1;
319 wattr_get(w, &attrs, &pair, NULL);
321 if( options.enable_colors )
322 {
323 /* color mode */
324 if( attrs != entry->attrs || id!=pair )
325 wattr_set(w, entry->attrs, id, NULL);
326 }
327 else
328 {
329 /* mono mode */
330 if( attrs != entry->attrs )
331 wattrset(w, entry->attrs);
332 }
334 return 0;
335 }