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XEP-0392: color: implement color hashing
* add the HSL values of each of the 256 terminal colors * add color_pair_cache_hash_str() * move common code to _color_pair_cache_get() helper func after hashing a string to a color, return the closest matching terminal color using euclidian distance of the HSL diff vector (this method was found empirically and seems to work well enough...)
This commit is contained in:
Aurelien Aptel
parent
15064d9739
commit
4a672bda22
@ -61,268 +61,294 @@ struct color_pair_cache
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* xterm default 256 colors
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* XXX: there are many duplicates... (eg blue3)
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*/
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const char *color_names[COLOR_NAME_SIZE] = {
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[0] = "black",
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[1] = "red",
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[2] = "green",
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[3] = "yellow",
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[4] = "blue",
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[5] = "magenta",
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[6] = "cyan",
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[7] = "white",
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[8] = "lightblack",
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[9] = "lightred",
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[10] = "lightgreen",
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[11] = "lightyellow",
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[12] = "lightblue",
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[13] = "lightmagenta",
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[14] = "lightcyan",
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[15] = "lightwhite",
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[16] = "grey0",
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[17] = "navyblue",
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[18] = "darkblue",
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[19] = "blue3",
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[20] = "blue3",
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[21] = "blue1",
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[22] = "darkgreen",
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[23] = "deepskyblue4",
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[24] = "deepskyblue4",
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[25] = "deepskyblue4",
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[26] = "dodgerblue3",
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[27] = "dodgerblue2",
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[28] = "green4",
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[29] = "springgreen4",
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[30] = "turquoise4",
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[31] = "deepskyblue3",
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[32] = "deepskyblue3",
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[33] = "dodgerblue1",
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[34] = "green3",
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[35] = "springgreen3",
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[36] = "darkcyan",
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[37] = "lightseagreen",
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[38] = "deepskyblue2",
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[39] = "deepskyblue1",
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[40] = "green3",
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[41] = "springgreen3",
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[42] = "springgreen2",
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[43] = "cyan3",
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[44] = "darkturquoise",
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[45] = "turquoise2",
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[46] = "green1",
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[47] = "springgreen2",
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[48] = "springgreen1",
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[49] = "mediumspringgreen",
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[50] = "cyan2",
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[51] = "cyan1",
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[52] = "darkred",
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[53] = "deeppink4",
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[54] = "purple4",
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[55] = "purple4",
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[56] = "purple3",
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[57] = "blueviolet",
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[58] = "orange4",
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[59] = "grey37",
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[60] = "mediumpurple4",
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[61] = "slateblue3",
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[62] = "slateblue3",
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[63] = "royalblue1",
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[64] = "chartreuse4",
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[65] = "darkseagreen4",
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[66] = "paleturquoise4",
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[67] = "steelblue",
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[68] = "steelblue3",
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[69] = "cornflowerblue",
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[70] = "chartreuse3",
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[71] = "darkseagreen4",
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[72] = "cadetblue",
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[73] = "cadetblue",
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[74] = "skyblue3",
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[75] = "steelblue1",
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[76] = "chartreuse3",
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[77] = "palegreen3",
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[78] = "seagreen3",
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[79] = "aquamarine3",
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[80] = "mediumturquoise",
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[81] = "steelblue1",
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[82] = "chartreuse2",
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[83] = "seagreen2",
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[84] = "seagreen1",
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[85] = "seagreen1",
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[86] = "aquamarine1",
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[87] = "darkslategray2",
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[88] = "darkred",
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[89] = "deeppink4",
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[90] = "darkmagenta",
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[91] = "darkmagenta",
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[92] = "darkviolet",
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[93] = "purple",
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[94] = "orange4",
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[95] = "lightpink4",
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[96] = "plum4",
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[97] = "mediumpurple3",
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[98] = "mediumpurple3",
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[99] = "slateblue1",
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[100] = "yellow4",
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[101] = "wheat4",
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[102] = "grey53",
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[103] = "lightslategrey",
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[104] = "mediumpurple",
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[105] = "lightslateblue",
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[106] = "yellow4",
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[107] = "darkolivegreen3",
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[108] = "darkseagreen",
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[109] = "lightskyblue3",
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[110] = "lightskyblue3",
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[111] = "skyblue2",
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[112] = "chartreuse2",
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[113] = "darkolivegreen3",
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[114] = "palegreen3",
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[115] = "darkseagreen3",
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[116] = "darkslategray3",
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[117] = "skyblue1",
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[118] = "chartreuse1",
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[119] = "lightgreen",
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[120] = "lightgreen",
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[121] = "palegreen1",
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[122] = "aquamarine1",
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[123] = "darkslategray1",
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[124] = "red3",
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[125] = "deeppink4",
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[126] = "mediumvioletred",
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[127] = "magenta3",
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[128] = "darkviolet",
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[129] = "purple",
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[130] = "darkorange3",
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[131] = "indianred",
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[132] = "hotpink3",
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[133] = "mediumorchid3",
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[134] = "mediumorchid",
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[135] = "mediumpurple2",
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[136] = "darkgoldenrod",
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[137] = "lightsalmon3",
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[138] = "rosybrown",
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[139] = "grey63",
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[140] = "mediumpurple2",
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[141] = "mediumpurple1",
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[142] = "gold3",
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[143] = "darkkhaki",
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[144] = "navajowhite3",
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[145] = "grey69",
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[146] = "lightsteelblue3",
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[147] = "lightsteelblue",
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[148] = "yellow3",
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[149] = "darkolivegreen3",
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[150] = "darkseagreen3",
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[151] = "darkseagreen2",
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[152] = "lightcyan3",
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[153] = "lightskyblue1",
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[154] = "greenyellow",
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[155] = "darkolivegreen2",
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[156] = "palegreen1",
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[157] = "darkseagreen2",
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[158] = "darkseagreen1",
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[159] = "paleturquoise1",
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[160] = "red3",
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[161] = "deeppink3",
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[162] = "deeppink3",
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[163] = "magenta3",
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[164] = "magenta3",
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[165] = "magenta2",
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[166] = "darkorange3",
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[167] = "indianred",
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[168] = "hotpink3",
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[169] = "hotpink2",
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[170] = "orchid",
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[171] = "mediumorchid1",
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[172] = "orange3",
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[173] = "lightsalmon3",
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[174] = "lightpink3",
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[175] = "pink3",
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[176] = "plum3",
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[177] = "violet",
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[178] = "gold3",
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[179] = "lightgoldenrod3",
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[180] = "tan",
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[181] = "mistyrose3",
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[182] = "thistle3",
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[183] = "plum2",
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[184] = "yellow3",
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[185] = "khaki3",
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[186] = "lightgoldenrod2",
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[187] = "lightyellow3",
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[188] = "grey84",
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[189] = "lightsteelblue1",
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[190] = "yellow2",
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[191] = "darkolivegreen1",
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[192] = "darkolivegreen1",
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[193] = "darkseagreen1",
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[194] = "honeydew2",
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[195] = "lightcyan1",
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[196] = "red1",
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[197] = "deeppink2",
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[198] = "deeppink1",
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[199] = "deeppink1",
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[200] = "magenta2",
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[201] = "magenta1",
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[202] = "orangered1",
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[203] = "indianred1",
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[204] = "indianred1",
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[205] = "hotpink",
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[206] = "hotpink",
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[207] = "mediumorchid1",
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[208] = "darkorange",
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[209] = "salmon1",
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[210] = "lightcoral",
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[211] = "palevioletred1",
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[212] = "orchid2",
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[213] = "orchid1",
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[214] = "orange1",
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[215] = "sandybrown",
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[216] = "lightsalmon1",
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[217] = "lightpink1",
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[218] = "pink1",
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[219] = "plum1",
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[220] = "gold1",
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[221] = "lightgoldenrod2",
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[222] = "lightgoldenrod2",
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[223] = "navajowhite1",
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[224] = "mistyrose1",
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[225] = "thistle1",
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[226] = "yellow1",
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[227] = "lightgoldenrod1",
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[228] = "khaki1",
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[229] = "wheat1",
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[230] = "cornsilk1",
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[231] = "grey100",
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[232] = "grey3",
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[233] = "grey7",
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[234] = "grey11",
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[235] = "grey15",
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[236] = "grey19",
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[237] = "grey23",
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[238] = "grey27",
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[239] = "grey30",
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[240] = "grey35",
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[241] = "grey39",
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[242] = "grey42",
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[243] = "grey46",
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[244] = "grey50",
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[245] = "grey54",
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[246] = "grey58",
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[247] = "grey62",
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[248] = "grey66",
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[249] = "grey70",
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[250] = "grey74",
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[251] = "grey78",
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[252] = "grey82",
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[253] = "grey85",
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[254] = "grey89",
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[255] = "grey93",
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const struct color_def color_names[COLOR_NAME_SIZE] = {
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[0] = { 0, 0, 0, "black" },
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[1] = { 0, 100, 25, "red" },
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[2] = { 120, 100, 25, "green" },
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[3] = { 60, 100, 25, "yellow" },
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[4] = { 240, 100, 25, "blue" },
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[5] = { 300, 100, 25, "magenta" },
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[6] = { 180, 100, 25, "cyan" },
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[7] = { 0, 0, 75, "white" },
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[8] = { 0, 0, 50, "lightblack" },
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[9] = { 0, 100, 50, "lightred" },
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[10] = { 120, 100, 50, "lightgreen" },
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[11] = { 60, 100, 50, "lightyellow" },
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[12] = { 240, 100, 50, "lightblue" },
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[13] = { 300, 100, 50, "lightmagenta" },
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[14] = { 180, 100, 50, "lightcyan" },
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[15] = { 0, 0, 100, "lightwhite" },
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[16] = { 0, 0, 0, "grey0" },
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[17] = { 240, 100, 18, "navyblue" },
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[18] = { 240, 100, 26, "darkblue" },
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[19] = { 240, 100, 34, "blue3" },
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[20] = { 240, 100, 42, "blue3" },
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[21] = { 240, 100, 50, "blue1" },
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[22] = { 120, 100, 18, "darkgreen" },
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[23] = { 180, 100, 18, "deepskyblue4" },
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[24] = { 97, 100, 26, "deepskyblue4" },
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[25] = { 7, 100, 34, "deepskyblue4" },
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[26] = { 13, 100, 42, "dodgerblue3" },
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[27] = { 17, 100, 50, "dodgerblue2" },
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[28] = { 120, 100, 26, "green4" },
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[29] = { 62, 100, 26, "springgreen4" },
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[30] = { 180, 100, 26, "turquoise4" },
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[31] = { 93, 100, 34, "deepskyblue3" },
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[32] = { 2, 100, 42, "deepskyblue3" },
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[33] = { 8, 100, 50, "dodgerblue1" },
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[34] = { 120, 100, 34, "green3" },
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[35] = { 52, 100, 34, "springgreen3" },
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[36] = { 66, 100, 34, "darkcyan" },
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[37] = { 180, 100, 34, "lightseagreen" },
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[38] = { 91, 100, 42, "deepskyblue2" },
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[39] = { 98, 100, 50, "deepskyblue1" },
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[40] = { 120, 100, 42, "green3" },
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[41] = { 46, 100, 42, "springgreen3" },
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[42] = { 57, 100, 42, "springgreen2" },
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[43] = { 68, 100, 42, "cyan3" },
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[44] = { 180, 100, 42, "darkturquoise" },
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[45] = { 89, 100, 50, "turquoise2" },
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[46] = { 120, 100, 50, "green1" },
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[47] = { 42, 100, 50, "springgreen2" },
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[48] = { 51, 100, 50, "springgreen1" },
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[49] = { 61, 100, 50, "mediumspringgreen" },
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[50] = { 70, 100, 50, "cyan2" },
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[51] = { 180, 100, 50, "cyan1" },
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[52] = { 0, 100, 18, "darkred" },
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[53] = { 300, 100, 18, "deeppink4" },
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[54] = { 82, 100, 26, "purple4" },
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[55] = { 72, 100, 34, "purple4" },
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[56] = { 66, 100, 42, "purple3" },
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[57] = { 62, 100, 50, "blueviolet" },
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[58] = { 60, 100, 18, "orange4" },
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[59] = { 0, 0, 37, "grey37" },
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[60] = { 240, 17, 45, "mediumpurple4" },
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[61] = { 240, 33, 52, "slateblue3" },
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[62] = { 240, 60, 60, "slateblue3" },
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[63] = { 240, 100, 68, "royalblue1" },
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[64] = { 7, 100, 26, "chartreuse4" },
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[65] = { 120, 17, 45, "darkseagreen4" },
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[66] = { 180, 17, 45, "paleturquoise4" },
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[67] = { 210, 33, 52, "steelblue" },
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[68] = { 220, 60, 60, "steelblue3" },
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[69] = { 225, 100, 68, "cornflowerblue" },
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[70] = { 7, 100, 34, "chartreuse3" },
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[71] = { 120, 33, 52, "darkseagreen4" },
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[72] = { 150, 33, 52, "cadetblue" },
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[73] = { 180, 33, 52, "cadetblue" },
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[74] = { 200, 60, 60, "skyblue3" },
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[75] = { 210, 100, 68, "steelblue1" },
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[76] = { 3, 100, 42, "chartreuse3" },
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[77] = { 120, 60, 60, "palegreen3" },
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[78] = { 140, 60, 60, "seagreen3" },
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[79] = { 160, 60, 60, "aquamarine3" },
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[80] = { 180, 60, 60, "mediumturquoise" },
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[81] = { 195, 100, 68, "steelblue1" },
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[82] = { 7, 100, 50, "chartreuse2" },
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[83] = { 120, 100, 68, "seagreen2" },
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[84] = { 135, 100, 68, "seagreen1" },
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[85] = { 150, 100, 68, "seagreen1" },
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[86] = { 165, 100, 68, "aquamarine1" },
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[87] = { 180, 100, 68, "darkslategray2" },
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[88] = { 0, 100, 26, "darkred" },
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[89] = { 17, 100, 26, "deeppink4" },
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[90] = { 300, 100, 26, "darkmagenta" },
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[91] = { 86, 100, 34, "darkmagenta" },
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[92] = { 77, 100, 42, "darkviolet" },
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[93] = { 71, 100, 50, "purple" },
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[94] = { 2, 100, 26, "orange4" },
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[95] = { 0, 17, 45, "lightpink4" },
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[96] = { 300, 17, 45, "plum4" },
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[97] = { 270, 33, 52, "mediumpurple3" },
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[98] = { 260, 60, 60, "mediumpurple3" },
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[99] = { 255, 100, 68, "slateblue1" },
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[100] = { 60, 100, 26, "yellow4" },
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[101] = { 60, 17, 45, "wheat4" },
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[102] = { 0, 0, 52, "grey53" },
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[103] = { 240, 20, 60, "lightslategrey" },
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[104] = { 240, 50, 68, "mediumpurple" },
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[105] = { 240, 100, 76, "lightslateblue" },
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[106] = { 3, 100, 34, "yellow4" },
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[107] = { 90, 33, 52, "darkolivegreen3" },
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[108] = { 120, 20, 60, "darkseagreen" },
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[109] = { 180, 20, 60, "lightskyblue3" },
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[110] = { 210, 50, 68, "lightskyblue3" },
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[111] = { 220, 100, 76, "skyblue2" },
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[112] = { 2, 100, 42, "chartreuse2" },
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[113] = { 100, 60, 60, "darkolivegreen3" },
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[114] = { 120, 50, 68, "palegreen3" },
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[115] = { 150, 50, 68, "darkseagreen3" },
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[116] = { 180, 50, 68, "darkslategray3" },
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[117] = { 200, 100, 76, "skyblue1" },
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[118] = { 8, 100, 50, "chartreuse1" },
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[119] = { 105, 100, 68, "lightgreen" },
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[120] = { 120, 100, 76, "lightgreen" },
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[121] = { 140, 100, 76, "palegreen1" },
|
||||
[122] = { 160, 100, 76, "aquamarine1" },
|
||||
[123] = { 180, 100, 76, "darkslategray1" },
|
||||
[124] = { 0, 100, 34, "red3" },
|
||||
[125] = { 27, 100, 34, "deeppink4" },
|
||||
[126] = { 13, 100, 34, "mediumvioletred" },
|
||||
[127] = { 300, 100, 34, "magenta3" },
|
||||
[128] = { 88, 100, 42, "darkviolet" },
|
||||
[129] = { 81, 100, 50, "purple" },
|
||||
[130] = { 2, 100, 34, "darkorange3" },
|
||||
[131] = { 0, 33, 52, "indianred" },
|
||||
[132] = { 330, 33, 52, "hotpink3" },
|
||||
[133] = { 300, 33, 52, "mediumorchid3" },
|
||||
[134] = { 280, 60, 60, "mediumorchid" },
|
||||
[135] = { 270, 100, 68, "mediumpurple2" },
|
||||
[136] = { 6, 100, 34, "darkgoldenrod" },
|
||||
[137] = { 30, 33, 52, "lightsalmon3" },
|
||||
[138] = { 0, 20, 60, "rosybrown" },
|
||||
[139] = { 300, 20, 60, "grey63" },
|
||||
[140] = { 270, 50, 68, "mediumpurple2" },
|
||||
[141] = { 260, 100, 76, "mediumpurple1" },
|
||||
[142] = { 60, 100, 34, "gold3" },
|
||||
[143] = { 60, 33, 52, "darkkhaki" },
|
||||
[144] = { 60, 20, 60, "navajowhite3" },
|
||||
[145] = { 0, 0, 68, "grey69" },
|
||||
[146] = { 240, 33, 76, "lightsteelblue3" },
|
||||
[147] = { 240, 100, 84, "lightsteelblue" },
|
||||
[148] = { 1, 100, 42, "yellow3" },
|
||||
[149] = { 80, 60, 60, "darkolivegreen3" },
|
||||
[150] = { 90, 50, 68, "darkseagreen3" },
|
||||
[151] = { 120, 33, 76, "darkseagreen2" },
|
||||
[152] = { 180, 33, 76, "lightcyan3" },
|
||||
[153] = { 210, 100, 84, "lightskyblue1" },
|
||||
[154] = { 8, 100, 50, "greenyellow" },
|
||||
[155] = { 90, 100, 68, "darkolivegreen2" },
|
||||
[156] = { 100, 100, 76, "palegreen1" },
|
||||
[157] = { 120, 100, 84, "darkseagreen2" },
|
||||
[158] = { 150, 100, 84, "darkseagreen1" },
|
||||
[159] = { 180, 100, 84, "paleturquoise1" },
|
||||
[160] = { 0, 100, 42, "red3" },
|
||||
[161] = { 33, 100, 42, "deeppink3" },
|
||||
[162] = { 22, 100, 42, "deeppink3" },
|
||||
[163] = { 11, 100, 42, "magenta3" },
|
||||
[164] = { 300, 100, 42, "magenta3" },
|
||||
[165] = { 90, 100, 50, "magenta2" },
|
||||
[166] = { 6, 100, 42, "darkorange3" },
|
||||
[167] = { 0, 60, 60, "indianred" },
|
||||
[168] = { 340, 60, 60, "hotpink3" },
|
||||
[169] = { 320, 60, 60, "hotpink2" },
|
||||
[170] = { 300, 60, 60, "orchid" },
|
||||
[171] = { 285, 100, 68, "mediumorchid1" },
|
||||
[172] = { 7, 100, 42, "orange3" },
|
||||
[173] = { 20, 60, 60, "lightsalmon3" },
|
||||
[174] = { 0, 50, 68, "lightpink3" },
|
||||
[175] = { 330, 50, 68, "pink3" },
|
||||
[176] = { 300, 50, 68, "plum3" },
|
||||
[177] = { 280, 100, 76, "violet" },
|
||||
[178] = { 8, 100, 42, "gold3" },
|
||||
[179] = { 40, 60, 60, "lightgoldenrod3" },
|
||||
[180] = { 30, 50, 68, "tan" },
|
||||
[181] = { 0, 33, 76, "mistyrose3" },
|
||||
[182] = { 300, 33, 76, "thistle3" },
|
||||
[183] = { 270, 100, 84, "plum2" },
|
||||
[184] = { 60, 100, 42, "yellow3" },
|
||||
[185] = { 60, 60, 60, "khaki3" },
|
||||
[186] = { 60, 50, 68, "lightgoldenrod2" },
|
||||
[187] = { 60, 33, 76, "lightyellow3" },
|
||||
[188] = { 0, 0, 84, "grey84" },
|
||||
[189] = { 240, 100, 92, "lightsteelblue1" },
|
||||
[190] = { 9, 100, 50, "yellow2" },
|
||||
[191] = { 75, 100, 68, "darkolivegreen1" },
|
||||
[192] = { 80, 100, 76, "darkolivegreen1" },
|
||||
[193] = { 90, 100, 84, "darkseagreen1" },
|
||||
[194] = { 120, 100, 92, "honeydew2" },
|
||||
[195] = { 180, 100, 92, "lightcyan1" },
|
||||
[196] = { 0, 100, 50, "red1" },
|
||||
[197] = { 37, 100, 50, "deeppink2" },
|
||||
[198] = { 28, 100, 50, "deeppink1" },
|
||||
[199] = { 18, 100, 50, "deeppink1" },
|
||||
[200] = { 9, 100, 50, "magenta2" },
|
||||
[201] = { 300, 100, 50, "magenta1" },
|
||||
[202] = { 2, 100, 50, "orangered1" },
|
||||
[203] = { 0, 100, 68, "indianred1" },
|
||||
[204] = { 345, 100, 68, "indianred1" },
|
||||
[205] = { 330, 100, 68, "hotpink" },
|
||||
[206] = { 315, 100, 68, "hotpink" },
|
||||
[207] = { 300, 100, 68, "mediumorchid1" },
|
||||
[208] = { 1, 100, 50, "darkorange" },
|
||||
[209] = { 15, 100, 68, "salmon1" },
|
||||
[210] = { 0, 100, 76, "lightcoral" },
|
||||
[211] = { 340, 100, 76, "palevioletred1" },
|
||||
[212] = { 320, 100, 76, "orchid2" },
|
||||
[213] = { 300, 100, 76, "orchid1" },
|
||||
[214] = { 1, 100, 50, "orange1" },
|
||||
[215] = { 30, 100, 68, "sandybrown" },
|
||||
[216] = { 20, 100, 76, "lightsalmon1" },
|
||||
[217] = { 0, 100, 84, "lightpink1" },
|
||||
[218] = { 330, 100, 84, "pink1" },
|
||||
[219] = { 300, 100, 84, "plum1" },
|
||||
[220] = { 0, 100, 50, "gold1" },
|
||||
[221] = { 45, 100, 68, "lightgoldenrod2" },
|
||||
[222] = { 40, 100, 76, "lightgoldenrod2" },
|
||||
[223] = { 30, 100, 84, "navajowhite1" },
|
||||
[224] = { 0, 100, 92, "mistyrose1" },
|
||||
[225] = { 300, 100, 92, "thistle1" },
|
||||
[226] = { 60, 100, 50, "yellow1" },
|
||||
[227] = { 60, 100, 68, "lightgoldenrod1" },
|
||||
[228] = { 60, 100, 76, "khaki1" },
|
||||
[229] = { 60, 100, 84, "wheat1" },
|
||||
[230] = { 60, 100, 92, "cornsilk1" },
|
||||
[231] = { 0, 0, 100, "grey100" },
|
||||
[232] = { 0, 0, 3, "grey3" },
|
||||
[233] = { 0, 0, 7, "grey7" },
|
||||
[234] = { 0, 0, 10, "grey11" },
|
||||
[235] = { 0, 0, 14, "grey15" },
|
||||
[236] = { 0, 0, 18, "grey19" },
|
||||
[237] = { 0, 0, 22, "grey23" },
|
||||
[238] = { 0, 0, 26, "grey27" },
|
||||
[239] = { 0, 0, 30, "grey30" },
|
||||
[240] = { 0, 0, 34, "grey35" },
|
||||
[241] = { 0, 0, 37, "grey39" },
|
||||
[242] = { 0, 0, 40, "grey42" },
|
||||
[243] = { 0, 0, 46, "grey46" },
|
||||
[244] = { 0, 0, 50, "grey50" },
|
||||
[245] = { 0, 0, 54, "grey54" },
|
||||
[246] = { 0, 0, 58, "grey58" },
|
||||
[247] = { 0, 0, 61, "grey62" },
|
||||
[248] = { 0, 0, 65, "grey66" },
|
||||
[249] = { 0, 0, 69, "grey70" },
|
||||
[250] = { 0, 0, 73, "grey74" },
|
||||
[251] = { 0, 0, 77, "grey78" },
|
||||
[252] = { 0, 0, 81, "grey82" },
|
||||
[253] = { 0, 0, 85, "grey85" },
|
||||
[254] = { 0, 0, 89, "grey89" },
|
||||
[255] = { 0, 0, 93, "grey93" },
|
||||
};
|
||||
|
||||
/* -1 is valid curses color */
|
||||
#define COL_ERR -2
|
||||
|
||||
static inline int color_distance(const struct color_def *a, const struct color_def *b)
|
||||
{
|
||||
int h = MIN((a->h - b->h)%360, (b->h - a->h)%360);
|
||||
int s = (int)a->s - b->s;
|
||||
int l = (int)a->l - b->l;
|
||||
return h*h + s*s + l*l;
|
||||
}
|
||||
|
||||
static int find_closest_col(int h, int s, int l)
|
||||
{
|
||||
int i;
|
||||
struct color_def a = {h, s, l};
|
||||
int min = 0;
|
||||
int dmin = color_distance(&a, &color_names[0]);
|
||||
|
||||
for (i = 1; i < COLOR_NAME_SIZE; i++) {
|
||||
int d = color_distance(&a, &color_names[i]);
|
||||
if (d < dmin) {
|
||||
dmin = d;
|
||||
min = i;
|
||||
}
|
||||
}
|
||||
return min;
|
||||
}
|
||||
|
||||
static int find_col(const char *col_name, int n)
|
||||
{
|
||||
int i;
|
||||
@ -346,7 +372,7 @@ static int find_col(const char *col_name, int n)
|
||||
}
|
||||
|
||||
for (i = 0; i < COLOR_NAME_SIZE; i++) {
|
||||
if (g_ascii_strcasecmp(name, color_names[i]) == 0) {
|
||||
if (g_ascii_strcasecmp(name, color_names[i].name) == 0) {
|
||||
return i;
|
||||
}
|
||||
}
|
||||
@ -354,6 +380,39 @@ static int find_col(const char *col_name, int n)
|
||||
return COL_ERR;
|
||||
}
|
||||
|
||||
static int color_hash(const char *str)
|
||||
{
|
||||
GChecksum *cs = NULL;
|
||||
guint8 buf[256] = {0};
|
||||
gsize len = 256;
|
||||
int rc = -1; /* default ncurse color */
|
||||
|
||||
cs = g_checksum_new(G_CHECKSUM_SHA1);
|
||||
if (!cs)
|
||||
goto out;
|
||||
|
||||
g_checksum_update(cs, (guint8*)str, strlen(str));
|
||||
g_checksum_get_digest(cs, buf, &len);
|
||||
|
||||
// sha1 should be 20 bytes
|
||||
if (len != 20)
|
||||
goto out;
|
||||
|
||||
double h = ((buf[1] << 8) | buf[0]) / 65536. * 360.;
|
||||
|
||||
// red/green blindness correction
|
||||
// h = fmod(fmod(h + 90., 180) - 90., 360.);
|
||||
|
||||
// blue blindness correction
|
||||
// h = fmod(h, 180.);
|
||||
|
||||
rc = find_closest_col((int)h, 100, 50);
|
||||
|
||||
out:
|
||||
g_checksum_free(cs);
|
||||
return rc;
|
||||
}
|
||||
|
||||
void color_pair_cache_reset(void)
|
||||
{
|
||||
if (cache.pairs) {
|
||||
@ -382,30 +441,9 @@ void color_pair_cache_reset(void)
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* color_pair_cache_get - parse color pair "fg_bg" and returns curses id
|
||||
*
|
||||
* if the pair doesn't exist it will allocate it in curses with init_pair
|
||||
* if the pair exists it returns its id
|
||||
*/
|
||||
int color_pair_cache_get(const char *pair_name)
|
||||
static int _color_pair_cache_get(int fg, int bg)
|
||||
{
|
||||
int i;
|
||||
const char *sep;
|
||||
int fg, bg;
|
||||
|
||||
sep = strchr(pair_name, '_');
|
||||
if (!sep) {
|
||||
log_error("Color: color pair %s missing", pair_name);
|
||||
return -1;
|
||||
}
|
||||
|
||||
fg = find_col(pair_name, sep - pair_name);
|
||||
bg = find_col(sep+1, strlen(sep));
|
||||
if (fg == COL_ERR || bg == COL_ERR) {
|
||||
log_error("Color: bad color name %s", pair_name);
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (COLORS < 256) {
|
||||
if (fg > 7 || bg > 7) {
|
||||
@ -424,7 +462,8 @@ int color_pair_cache_get(const char *pair_name)
|
||||
/* otherwise cache new pair */
|
||||
|
||||
if (cache.size >= cache.capacity) {
|
||||
log_error("Color: reached ncurses color pair cache of %d", COLOR_PAIRS);
|
||||
log_error("Color: reached ncurses color pair cache of %d (COLOR_PAIRS=%d)",
|
||||
cache.capacity, COLOR_PAIRS);
|
||||
return -1;
|
||||
}
|
||||
|
||||
@ -438,3 +477,47 @@ int color_pair_cache_get(const char *pair_name)
|
||||
|
||||
return i;
|
||||
}
|
||||
|
||||
/**
|
||||
* color_pair_cache_hash_str - hash string to a color pair curses id
|
||||
*
|
||||
* Implements XEP-0392 ("Consistent Color Generation") as best as
|
||||
* possible given a 256 colors terminal.
|
||||
*
|
||||
* hash a string into a color that will be used as fg
|
||||
* use default color as bg
|
||||
*/
|
||||
int color_pair_cache_hash_str(const char *str)
|
||||
{
|
||||
int fg = color_hash(str);
|
||||
int bg = -1;
|
||||
|
||||
return _color_pair_cache_get(fg, bg);
|
||||
}
|
||||
|
||||
/**
|
||||
* color_pair_cache_get - parse color pair "fg_bg" and returns curses id
|
||||
*
|
||||
* if the pair doesn't exist it will allocate it in curses with init_pair
|
||||
* if the pair exists it returns its id
|
||||
*/
|
||||
int color_pair_cache_get(const char *pair_name)
|
||||
{
|
||||
const char *sep;
|
||||
int fg, bg;
|
||||
|
||||
sep = strchr(pair_name, '_');
|
||||
if (!sep) {
|
||||
log_error("Color: color pair %s missing", pair_name);
|
||||
return -1;
|
||||
}
|
||||
|
||||
fg = find_col(pair_name, sep - pair_name);
|
||||
bg = find_col(sep+1, strlen(sep));
|
||||
if (fg == COL_ERR || bg == COL_ERR) {
|
||||
log_error("Color: bad color name %s", pair_name);
|
||||
return -1;
|
||||
}
|
||||
|
||||
return _color_pair_cache_get(fg, bg);
|
||||
}
|
||||
|
||||
@ -38,10 +38,20 @@
|
||||
|
||||
/* to access color names */
|
||||
#define COLOR_NAME_SIZE 256
|
||||
extern const char *color_names[];
|
||||
|
||||
/* to add or clear cache */
|
||||
#include <stdint.h>
|
||||
|
||||
struct color_def {
|
||||
uint16_t h; uint8_t s, l;
|
||||
const char *name;
|
||||
};
|
||||
extern const struct color_def color_names[];
|
||||
|
||||
/* hash string to color pair */
|
||||
int color_pair_cache_hash_str(const char *str);
|
||||
/* parse fg_bg string to color pair */
|
||||
int color_pair_cache_get(const char *pair_name);
|
||||
/* clear cache */
|
||||
void color_pair_cache_reset(void);
|
||||
|
||||
#endif
|
||||
|
||||
Loading…
Reference in New Issue
Block a user