diff options
Diffstat (limited to 'color/attr.c')
| -rw-r--r-- | color/attr.c | 187 |
1 files changed, 184 insertions, 3 deletions
diff --git a/color/attr.c b/color/attr.c index b4db66545..cc1b06c65 100644 --- a/color/attr.c +++ b/color/attr.c @@ -29,8 +29,9 @@ #include "config.h" #include <stddef.h> -#include <stdint.h> +#include <assert.h> #include "mutt/lib.h" +#include "gui/lib.h" #include "attr.h" #include "curses2.h" #include "debug.h" @@ -116,8 +117,8 @@ void attr_color_list_clear(struct AttrColorList *acl) * @param attrs Attributes, e.g. A_UNDERLINE * @retval ptr Matching AttrColor */ -struct AttrColor *attr_color_list_find(struct AttrColorList *acl, uint32_t fg, - uint32_t bg, int attrs) +struct AttrColor *attr_color_list_find(struct AttrColorList *acl, color_t fg, + color_t bg, int attrs) { if (!acl) return NULL; @@ -181,3 +182,183 @@ bool attr_color_match(struct AttrColor *ac1, struct AttrColor *ac2) return ((ac1->curses_color == ac2->curses_color) && (ac1->attrs == ac2->attrs)); } + +/** + * modify_color_by_prefix - Modify a colour/attributes based on a prefix, e.g. "bright" + * @param[in] prefix prefix to apply + * @param[in] is_fg true if a foreground colour should be modified + * @param[in,out] col colour to modify + * @param[in,out] attrs attributes to modify + */ +void modify_color_by_prefix(enum ColorPrefix prefix, bool is_fg, color_t *col, int *attrs) +{ + if (prefix == COLOR_PREFIX_NONE) + return; // nothing to do here + + if (prefix == COLOR_PREFIX_ALERT) + { + *attrs |= A_BOLD; + *attrs |= A_BLINK; + } + else if (is_fg) + { + if ((COLORS >= 16) && (prefix == COLOR_PREFIX_LIGHT)) + { + if (*col <= 7) + { + /* Advance the color 0-7 by 8 to get the light version */ + *col += 8; + } + } + else + { + *attrs |= A_BOLD; + } + } + else + { + if (COLORS >= 16) + { + if (*col <= 7) + { + /* Advance the color 0-7 by 8 to get the light version */ + *col += 8; + } + } + } +} + +#ifdef NEOMUTT_DIRECT_COLORS +/** + * color_xterm256_to_24bit - Convert a xterm color to its RGB value + * @param[in] color xterm color number to be converted + * @retval num The color's RGB value as number with value 0xRRGGBB + * + * There are 256 xterm colors numbered 0 to 255. + * + * Caller contract: color must be between 0 and 255. + * + * ## Xterm Color Codes + * + * ### Basic and Bright Colors + * + * - 0-7 correspond to the 8 terminal colours + * - 8-15 are the bright variants of 0-7 + * + * | | | | | | | | | | | | | | | | | + * | :-- | :-------- | :-- | :------- | :-- | :------- | :-- | :------- | :-- | :------- | :-- | :------- | :- | :------- | :- | :-------- | + * | 0 | `#000000` | 1 | `#800000` | 2 | `#008000` | 3 | `#808000` | 4 | `#000080` | 5 | `#800080` | 6 | `#008080` | 7 | `#c0c0c0` | + * | 8 | `#808080` | 9 | `#ff0000` | 10 | `#00ff00` | 11 | `#ffff00` | 12 | `#0000ff` | 13 | `#ff00ff` | 14 | `#00ffff` | 15 | `#ffffff` | + * + * ### Color palette + * + * | | | | | | | | | | | | | + * | :-- | :------- | :-- | :------- | :-- | :------- | :-- | :------- | :-- | :------- | :-- | :------- | + * | 16 | `#000000` | 17 | `#00005f` | 18 | `#000087` | 19 | `#0000af` | 20 | `#0000d7` | 21 | `#0000ff` | + * | 22 | `#005f00` | 23 | `#005f5f` | 24 | `#005f87` | 25 | `#005faf` | 26 | `#005fd7` | 27 | `#005fff` | + * | 28 | `#008700` | 29 | `#00875f` | 30 | `#008787` | 31 | `#0087af` | 32 | `#0087d7` | 33 | `#0087ff` | + * | 34 | `#00af00` | 35 | `#00af5f` | 36 | `#00af87` | 37 | `#00afaf` | 38 | `#00afd7` | 39 | `#00afff` | + * | 40 | `#00d700` | 41 | `#00d75f` | 42 | `#00d787` | 43 | `#00d7af` | 44 | `#00d7d7` | 45 | `#00d7ff` | + * | 46 | `#00ff00` | 47 | `#00ff5f` | 48 | `#00ff87` | 49 | `#00ffaf` | 50 | `#00ffd7` | 51 | `#00ffff` | + * | 52 | `#5f0000` | 53 | `#5f005f` | 54 | `#5f0087` | 55 | `#5f00af` | 56 | `#5f00d7` | 57 | `#5f00ff` | + * | 58 | `#5f5f00` | 59 | `#5f5f5f` | 60 | `#5f5f87` | 61 | `#5f5faf` | 62 | `#5f5fd7` | 63 | `#5f5fff` | + * | 64 | `#5f8700` | 65 | `#5f875f` | 66 | `#5f8787` | 67 | `#5f87af` | 68 | `#5f87d7` | 69 | `#5f87ff` | + * | 70 | `#5faf00` | 71 | `#5faf5f` | 72 | `#5faf87` | 73 | `#5fafaf` | 74 | `#5fafd7` | 75 | `#5fafff` | + * | 76 | `#5fd700` | 77 | `#5fd75f` | 78 | `#5fd787` | 79 | `#5fd7af` | 80 | `#5fd7d7` | 81 | `#5fd7ff` | + * | 82 | `#5fff00` | 83 | `#5fff5f` | 84 | `#5fff87` | 85 | `#5fffaf` | 86 | `#5fffd7` | 87 | `#5fffff` | + * | 88 | `#870000` | 89 | `#87005f` | 90 | `#870087` | 91 | `#8700af` | 92 | `#8700d7` | 93 | `#8700ff` | + * | 94 | `#875f00` | 95 | `#875f5f` | 96 | `#875f87` | 97 | `#875faf` | 98 | `#875fd7` | 99 | `#875fff` | + * | 100 | `#878700` | 101 | `#87875f` | 102 | `#878787` | 103 | `#8787af` | 104 | `#8787d7` | 105 | `#8787ff` | + * | 106 | `#87af00` | 107 | `#87af5f` | 108 | `#87af87` | 109 | `#87afaf` | 110 | `#87afd7` | 111 | `#87afff` | + * | 112 | `#87d700` | 113 | `#87d75f` | 114 | `#87d787` | 115 | `#87d7af` | 116 | `#87d7d7` | 117 | `#87d7ff` | + * | 118 | `#87ff00` | 119 | `#87ff5f` | 120 | `#87ff87` | 121 | `#87ffaf` | 122 | `#87ffd7` | 123 | `#87ffff` | + * | 124 | `#af0000` | 125 | `#af005f` | 126 | `#af0087` | 127 | `#af00af` | 128 | `#af00d7` | 129 | `#af00ff` | + * | 130 | `#af5f00` | 131 | `#af5f5f` | 132 | `#af5f87` | 133 | `#af5faf` | 134 | `#af5fd7` | 135 | `#af5fff` | + * | 136 | `#af8700` | 137 | `#af875f` | 138 | `#af8787` | 139 | `#af87af` | 140 | `#af87d7` | 141 | `#af87ff` | + * | 142 | `#afaf00` | 143 | `#afaf5f` | 144 | `#afaf87` | 145 | `#afafaf` | 146 | `#afafd7` | 147 | `#afafff` | + * | 148 | `#afd700` | 149 | `#afd75f` | 150 | `#afd787` | 151 | `#afd7af` | 152 | `#afd7d7` | 153 | `#afd7ff` | + * | 154 | `#afff00` | 155 | `#afff5f` | 156 | `#afff87` | 157 | `#afffaf` | 158 | `#afffd7` | 159 | `#afffff` | + * | 160 | `#d70000` | 161 | `#d7005f` | 162 | `#d70087` | 163 | `#d700af` | 164 | `#d700d7` | 165 | `#d700ff` | + * | 166 | `#d75f00` | 167 | `#d75f5f` | 168 | `#d75f87` | 169 | `#d75faf` | 170 | `#d75fd7` | 171 | `#d75fff` | + * | 172 | `#d78700` | 173 | `#d7875f` | 174 | `#d78787` | 175 | `#d787af` | 176 | `#d787d7` | 177 | `#d787ff` | + * | 178 | `#d7af00` | 179 | `#d7af5f` | 180 | `#d7af87` | 181 | `#d7afaf` | 182 | `#d7afd7` | 183 | `#d7afff` | + * | 184 | `#d7d700` | 185 | `#d7d75f` | 186 | `#d7d787` | 187 | `#d7d7af` | 188 | `#d7d7d7` | 189 | `#d7d7ff` | + * | 190 | `#d7ff00` | 191 | `#d7ff5f` | 192 | `#d7ff87` | 193 | `#d7ffaf` | 194 | `#d7ffd7` | 195 | `#d7ffff` | + * | 196 | `#ff0000` | 197 | `#ff005f` | 198 | `#ff0087` | 199 | `#ff00af` | 200 | `#ff00d7` | 201 | `#ff00ff` | + * | 202 | `#ff5f00` | 203 | `#ff5f5f` | 204 | `#ff5f87` | 205 | `#ff5faf` | 206 | `#ff5fd7` | 207 | `#ff5fff` | + * | 208 | `#ff8700` | 209 | `#ff875f` | 210 | `#ff8787` | 211 | `#ff87af` | 212 | `#ff87d7` | 213 | `#ff87ff` | + * | 214 | `#ffaf00` | 215 | `#ffaf5f` | 216 | `#ffaf87` | 217 | `#ffafaf` | 218 | `#ffafd7` | 219 | `#ffafff` | + * | 220 | `#ffd700` | 221 | `#ffd75f` | 222 | `#ffd787` | 223 | `#ffd7af` | 224 | `#ffd7d7` | 225 | `#ffd7ff` | + * | 226 | `#ffff00` | 227 | `#ffff5f` | 228 | `#ffff87` | 229 | `#ffffaf` | 230 | `#ffffd7` | 231 | `#ffffff` | + * + * ### Grey Scale Ramp + * + * | | | | | | | | | | | | | | | | | + * | :-- | :-------- | :-- | :------- | :-- | :------- | :-- | :------- | :-- | :------- | :-- | :------- | :-- | :------- | :-- | :-------- | + * | 232 | `#080808` | 233 | `#121212` | 234 | `#1c1c1c` | 235 | `#262626` | 236 | `#303030` | 237 | `#3a3a3a` | 238 | `#444444` | 239 | `#4e4e4e` | + * | 240 | `#585858` | 241 | `#606060` | 242 | `#666666` | 243 | `#767676` | 244 | `#808080` | 245 | `#8a8a8a` | 246 | `#949494` | 247 | `#9e9e9e` | + * | 248 | `#a8a8a8` | 249 | `#b2b2b2` | 250 | `#bcbcbc` | 251 | `#c6c6c6` | 252 | `#d0d0d0` | 253 | `#dadada` | 254 | `#e4e4e4` | 255 | `#eeeeee` | + */ +color_t color_xterm256_to_24bit(const color_t color) +{ + static const color_t basic[] = { + 0x000000, 0x800000, 0x008000, 0x808000, 0x000080, 0x800080, + 0x008080, 0xc0c0c0, 0x808080, 0xff0000, 0x00ff00, 0xffff00, + 0x0000ff, 0xff00ff, 0x00ffff, 0xffffff, + }; + + assert(color < 256); + + if (color < 0) + return color; + + if (color < 16) + { + color_debug(LL_DEBUG5, "Converted color 0-15: %d\n", color); + /* The first 16 colours are the "usual" terminal colours */ + return basic[color]; + } + + if (color < 232) + { + /* The Color palette is divided in 6x6x6 colours, i.e. each R, G, B channel + * has six values: + * + * value: 1 2 3 4 5 6 + * color: 0x00 0x5f 0x87 0xaf 0xd7 0xff + * + * The steps between the values is 0x28 = 40, the EXCEPT for the first one + * where it is 0x5f = 95. + * + * If we express the xterm color number minus 16 to base 6, i.e. + * + * color - 16 = (vr * 36) + (vg * 6) + (vb * 1) + * + * with vr, vg, vb integers between 0 and 5, then vr, vg, vb is the channel + * value for red, green, and blue, respectively. + */ + + color_t normalised_color = color - 16; + color_t vr = (normalised_color % 216) / 36; /* 216 = 6*6*6 */ + color_t vg = (normalised_color % 36) / 6; + color_t vb = (normalised_color % 6) / 1; + + /* First step is wider than the other ones, so add the difference if needed */ + color_t r = vr * 0x28 + ((vr > 0) ? (0x5f - 0x40) : 0); + color_t g = vg * 0x28 + ((vg > 0) ? (0x5f - 0x40) : 0); + color_t b = vb * 0x28 + ((vb > 0) ? (0x5f - 0x40) : 0); + + color_t rgb = (r << 16) + (g << 8) + (b << 0); + color_debug(LL_DEBUG5, "Converted xterm color %d to RGB #%x:\n", color, rgb); + return rgb; + } + + /* Grey scale starts at 0x08 and adds 0xa = 10 in very step ending in 0xee. + * There are a total of 6*4 = 24 grey colors in total. */ + color_t steps = color - 232; + color_t grey = (steps * 0x0a) + 0x08; + color_t rgb = (grey << 16) + (grey << 8) + (grey << 0); + color_debug(LL_DEBUG5, "Converted xterm color %d to RGB #%x:\n", color, rgb); + return rgb; +} +#endif |