This source file includes following definitions.
- has_colors
- mc_tty_color_pair_init_special
- tty_color_init_lib
- tty_color_deinit_lib
- tty_color_try_alloc_pair_lib
- tty_setcolor
- tty_lowlevel_setcolor
- tty_set_normal_attrs
- tty_use_256colors
- tty_use_truecolors
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31 #include <config.h>
32
33 #include <stdio.h>
34 #include <stdlib.h>
35 #include <string.h>
36 #include <sys/types.h>
37
38 #include "lib/global.h"
39 #include "lib/util.h"
40
41 #include "tty-slang.h"
42 #include "color.h"
43 #include "color-internal.h"
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54
55
56 static int
57 has_colors (gboolean disable, gboolean force)
58 {
59 mc_tty_color_disable = disable;
60
61 if (force || (getenv ("COLORTERM") != NULL))
62 SLtt_Use_Ansi_Colors = 1;
63
64 if (!mc_tty_color_disable)
65 {
66 const char *terminal = getenv ("TERM");
67 const size_t len = strlen (terminal);
68 char *cts = mc_global.tty.color_terminal_string;
69
70
71 while (*cts != '\0')
72 {
73 char *s;
74 size_t i = 0;
75
76 while (whitespace (*cts))
77 cts++;
78 s = cts;
79
80 while (*cts != '\0' && *cts != ',')
81 {
82 cts++;
83 i++;
84 }
85
86 if ((i != 0) && (i == len) && (strncmp (s, terminal, i) == 0))
87 SLtt_Use_Ansi_Colors = 1;
88
89 if (*cts == ',')
90 cts++;
91 }
92 }
93 return SLtt_Use_Ansi_Colors;
94 }
95
96
97
98 static void
99 mc_tty_color_pair_init_special (tty_color_pair_t * mc_color_pair,
100 const char *fg1, const char *bg1,
101 const char *fg2, const char *bg2, SLtt_Char_Type mask)
102 {
103 if (SLtt_Use_Ansi_Colors != 0)
104 {
105 if (!mc_tty_color_disable)
106 {
107 SLtt_set_color (mc_color_pair->pair_index, (char *) "", (char *) fg1, (char *) bg1);
108 }
109 else
110 {
111 SLtt_set_color (mc_color_pair->pair_index, (char *) "", (char *) fg2, (char *) bg2);
112 }
113 }
114 else
115 {
116 SLtt_set_mono (mc_color_pair->pair_index, NULL, mask);
117 }
118 }
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120
121
122
123
124 void
125 tty_color_init_lib (gboolean disable, gboolean force)
126 {
127
128
129 if (has_colors (disable, force) && !disable)
130 {
131 use_colors = TRUE;
132 }
133 }
134
135
136
137 void
138 tty_color_deinit_lib (void)
139 {
140 }
141
142
143
144 void
145 tty_color_try_alloc_pair_lib (tty_color_pair_t * mc_color_pair)
146 {
147 if (mc_color_pair->ifg <= (int) SPEC_A_REVERSE)
148 {
149 switch (mc_color_pair->ifg)
150 {
151 case SPEC_A_REVERSE:
152 mc_tty_color_pair_init_special (mc_color_pair,
153 "black", "white", "black", "lightgray", SLTT_REV_MASK);
154 break;
155 case SPEC_A_BOLD:
156 mc_tty_color_pair_init_special (mc_color_pair,
157 "white", "black", "white", "black", SLTT_BOLD_MASK);
158 break;
159 case SPEC_A_BOLD_REVERSE:
160 mc_tty_color_pair_init_special (mc_color_pair,
161 "white", "white",
162 "white", "white", SLTT_BOLD_MASK | SLTT_REV_MASK);
163 break;
164 case SPEC_A_UNDERLINE:
165 mc_tty_color_pair_init_special (mc_color_pair,
166 "white", "black", "white", "black", SLTT_ULINE_MASK);
167 break;
168 default:
169 break;
170 }
171 }
172 else
173 {
174 const char *fg, *bg;
175
176 fg = tty_color_get_name_by_index (mc_color_pair->ifg);
177 bg = tty_color_get_name_by_index (mc_color_pair->ibg);
178 SLtt_set_color (mc_color_pair->pair_index, (char *) "", (char *) fg, (char *) bg);
179 SLtt_add_color_attribute (mc_color_pair->pair_index, mc_color_pair->attr);
180 }
181 }
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183
184
185 void
186 tty_setcolor (int color)
187 {
188 SLsmg_set_color (color);
189 }
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194
195
196 void
197 tty_lowlevel_setcolor (int color)
198 {
199 SLsmg_set_color (color & 0x7F);
200 }
201
202
203
204 void
205 tty_set_normal_attrs (void)
206 {
207 SLsmg_normal_video ();
208 }
209
210
211
212 gboolean
213 tty_use_256colors (void)
214 {
215 return (SLtt_Use_Ansi_Colors && SLtt_tgetnum ((char *) "Co") == 256);
216 }
217
218
219
220 gboolean
221 tty_use_truecolors (GError ** error)
222 {
223 char *colorterm;
224
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227
228
229 if (SLang_Version < 20301 || (sizeof (long) != 8 && SLang_Version < 30000))
230 {
231 g_set_error (error, MC_ERROR, -1, _("True color not supported in this slang version."));
232 return FALSE;
233 }
234
235
236 if (!tty_use_256colors ())
237 {
238 g_set_error (error, MC_ERROR, -1,
239 _("Your terminal doesn't even seem to support 256 colors."));
240 return FALSE;
241 }
242
243
244
245 colorterm = getenv ("COLORTERM");
246 if (colorterm == NULL
247 || (strcmp (colorterm, "truecolor") != 0 && strcmp (colorterm, "24bit") != 0))
248 {
249 g_set_error (error, MC_ERROR, -1,
250 _("Set COLORTERM=truecolor if your terminal really supports true colors."));
251 return FALSE;
252 }
253
254 return TRUE;
255 }
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257