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547 lines
18 KiB
C
547 lines
18 KiB
C
/*
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* color.c
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* vim: expandtab:ts=4:sts=4:sw=4
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*
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* Copyright (C) 2019 Aurelien Aptel <aurelien.aptel@gmail.com>
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* Copyright (C) 2019 - 2021 Michael Vetter <jubalh@iodoru.org>
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*
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* This file is part of Profanity.
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*
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* Profanity is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Profanity is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Profanity. If not, see <https://www.gnu.org/licenses/>.
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*
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* In addition, as a special exception, the copyright holders give permission to
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* link the code of portions of this program with the OpenSSL library under
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* certain conditions as described in each individual source file, and
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* distribute linked combinations including the two.
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*
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* You must obey the GNU General Public License in all respects for all of the
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* code used other than OpenSSL. If you modify file(s) with this exception, you
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* may extend this exception to your version of the file(s), but you are not
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* obligated to do so. If you do not wish to do so, delete this exception
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* statement from your version. If you delete this exception statement from all
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* source files in the program, then also delete it here.
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*
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*/
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#include "config.h"
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#include <stdlib.h>
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#include <string.h>
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#include <stdint.h>
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#include <math.h>
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#include <glib.h>
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#ifdef HAVE_NCURSESW_NCURSES_H
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#include <ncursesw/ncurses.h>
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#elif HAVE_NCURSES_H
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#include <ncurses.h>
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#elif HAVE_CURSES_H
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#include <curses.h>
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#endif
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#include "config/color.h"
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#include "config/theme.h"
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#include "log.h"
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static struct color_pair_cache
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{
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struct
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{
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int16_t fg, bg;
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} * pairs;
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int size;
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int capacity;
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} cache = { 0 };
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/*
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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 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" },
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[122] = { 160, 100, 76, "aquamarine1" },
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[123] = { 180, 100, 76, "darkslategray1" },
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[124] = { 0, 100, 34, "red3" },
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[125] = { 27, 100, 34, "deeppink4" },
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[126] = { 13, 100, 34, "mediumvioletred" },
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[127] = { 300, 100, 34, "magenta3" },
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[128] = { 88, 100, 42, "darkviolet" },
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[129] = { 81, 100, 50, "purple" },
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[130] = { 2, 100, 34, "darkorange3" },
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[131] = { 0, 33, 52, "indianred" },
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[132] = { 330, 33, 52, "hotpink3" },
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[133] = { 300, 33, 52, "mediumorchid3" },
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[134] = { 280, 60, 60, "mediumorchid" },
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[135] = { 270, 100, 68, "mediumpurple2" },
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[136] = { 6, 100, 34, "darkgoldenrod" },
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[137] = { 30, 33, 52, "lightsalmon3" },
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[138] = { 0, 20, 60, "rosybrown" },
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[139] = { 300, 20, 60, "grey63" },
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[140] = { 270, 50, 68, "mediumpurple2" },
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[141] = { 260, 100, 76, "mediumpurple1" },
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[142] = { 60, 100, 34, "gold3" },
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[143] = { 60, 33, 52, "darkkhaki" },
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[144] = { 60, 20, 60, "navajowhite3" },
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[145] = { 0, 0, 68, "grey69" },
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[146] = { 240, 33, 76, "lightsteelblue3" },
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[147] = { 240, 100, 84, "lightsteelblue" },
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[148] = { 1, 100, 42, "yellow3" },
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[149] = { 80, 60, 60, "darkolivegreen3" },
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[150] = { 90, 50, 68, "darkseagreen3" },
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[151] = { 120, 33, 76, "darkseagreen2" },
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[152] = { 180, 33, 76, "lightcyan3" },
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[153] = { 210, 100, 84, "lightskyblue1" },
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[154] = { 8, 100, 50, "greenyellow" },
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[155] = { 90, 100, 68, "darkolivegreen2" },
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[156] = { 100, 100, 76, "palegreen1" },
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[157] = { 120, 100, 84, "darkseagreen2" },
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[158] = { 150, 100, 84, "darkseagreen1" },
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[159] = { 180, 100, 84, "paleturquoise1" },
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[160] = { 0, 100, 42, "red3" },
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[161] = { 33, 100, 42, "deeppink3" },
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[162] = { 22, 100, 42, "deeppink3" },
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[163] = { 11, 100, 42, "magenta3" },
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[164] = { 300, 100, 42, "magenta3" },
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[165] = { 90, 100, 50, "magenta2" },
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[166] = { 6, 100, 42, "darkorange3" },
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[167] = { 0, 60, 60, "indianred" },
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[168] = { 340, 60, 60, "hotpink3" },
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[169] = { 320, 60, 60, "hotpink2" },
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[170] = { 300, 60, 60, "orchid" },
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[171] = { 285, 100, 68, "mediumorchid1" },
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[172] = { 7, 100, 42, "orange3" },
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[173] = { 20, 60, 60, "lightsalmon3" },
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[174] = { 0, 50, 68, "lightpink3" },
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[175] = { 330, 50, 68, "pink3" },
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[176] = { 300, 50, 68, "plum3" },
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[177] = { 280, 100, 76, "violet" },
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[178] = { 8, 100, 42, "gold3" },
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[179] = { 40, 60, 60, "lightgoldenrod3" },
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[180] = { 30, 50, 68, "tan" },
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[181] = { 0, 33, 76, "mistyrose3" },
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[182] = { 300, 33, 76, "thistle3" },
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[183] = { 270, 100, 84, "plum2" },
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[184] = { 60, 100, 42, "yellow3" },
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[185] = { 60, 60, 60, "khaki3" },
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[186] = { 60, 50, 68, "lightgoldenrod2" },
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[187] = { 60, 33, 76, "lightyellow3" },
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[188] = { 0, 0, 84, "grey84" },
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[189] = { 240, 100, 92, "lightsteelblue1" },
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[190] = { 9, 100, 50, "yellow2" },
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[191] = { 75, 100, 68, "darkolivegreen1" },
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[192] = { 80, 100, 76, "darkolivegreen1" },
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[193] = { 90, 100, 84, "darkseagreen1" },
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[194] = { 120, 100, 92, "honeydew2" },
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[195] = { 180, 100, 92, "lightcyan1" },
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[196] = { 0, 100, 50, "red1" },
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[197] = { 37, 100, 50, "deeppink2" },
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[198] = { 28, 100, 50, "deeppink1" },
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[199] = { 18, 100, 50, "deeppink1" },
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[200] = { 9, 100, 50, "magenta2" },
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[201] = { 300, 100, 50, "magenta1" },
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[202] = { 2, 100, 50, "orangered1" },
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[203] = { 0, 100, 68, "indianred1" },
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[204] = { 345, 100, 68, "indianred1" },
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[205] = { 330, 100, 68, "hotpink" },
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[206] = { 315, 100, 68, "hotpink" },
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[207] = { 300, 100, 68, "mediumorchid1" },
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[208] = { 1, 100, 50, "darkorange" },
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[209] = { 15, 100, 68, "salmon1" },
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[210] = { 0, 100, 76, "lightcoral" },
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[211] = { 340, 100, 76, "palevioletred1" },
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[212] = { 320, 100, 76, "orchid2" },
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[213] = { 300, 100, 76, "orchid1" },
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[214] = { 1, 100, 50, "orange1" },
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[215] = { 30, 100, 68, "sandybrown" },
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[216] = { 20, 100, 76, "lightsalmon1" },
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[217] = { 0, 100, 84, "lightpink1" },
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[218] = { 330, 100, 84, "pink1" },
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[219] = { 300, 100, 84, "plum1" },
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[220] = { 0, 100, 50, "gold1" },
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[221] = { 45, 100, 68, "lightgoldenrod2" },
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[222] = { 40, 100, 76, "lightgoldenrod2" },
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[223] = { 30, 100, 84, "navajowhite1" },
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[224] = { 0, 100, 92, "mistyrose1" },
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[225] = { 300, 100, 92, "thistle1" },
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[226] = { 60, 100, 50, "yellow1" },
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[227] = { 60, 100, 68, "lightgoldenrod1" },
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[228] = { 60, 100, 76, "khaki1" },
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[229] = { 60, 100, 84, "wheat1" },
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[230] = { 60, 100, 92, "cornsilk1" },
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[231] = { 0, 0, 100, "grey100" },
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[232] = { 0, 0, 3, "grey3" },
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[233] = { 0, 0, 7, "grey7" },
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[234] = { 0, 0, 10, "grey11" },
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[235] = { 0, 0, 14, "grey15" },
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[236] = { 0, 0, 18, "grey19" },
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[237] = { 0, 0, 22, "grey23" },
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[238] = { 0, 0, 26, "grey27" },
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[239] = { 0, 0, 30, "grey30" },
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[240] = { 0, 0, 34, "grey35" },
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[241] = { 0, 0, 37, "grey39" },
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[242] = { 0, 0, 40, "grey42" },
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[243] = { 0, 0, 46, "grey46" },
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[244] = { 0, 0, 50, "grey50" },
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[245] = { 0, 0, 54, "grey54" },
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[246] = { 0, 0, 58, "grey58" },
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[247] = { 0, 0, 61, "grey62" },
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[248] = { 0, 0, 65, "grey66" },
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[249] = { 0, 0, 69, "grey70" },
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[250] = { 0, 0, 73, "grey74" },
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[251] = { 0, 0, 77, "grey78" },
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[252] = { 0, 0, 81, "grey82" },
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[253] = { 0, 0, 85, "grey85" },
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[254] = { 0, 0, 89, "grey89" },
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[255] = { 0, 0, 93, "grey93" },
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};
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/* -1 is valid curses color */
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#define COL_ERR -2
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static inline int
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color_distance(const struct color_def* a, const struct color_def* b)
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{
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int h = MIN((a->h - b->h) % 360, (b->h - a->h) % 360);
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int s = (int)a->s - b->s;
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int l = (int)a->l - b->l;
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return h * h + s * s + l * l;
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}
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static int
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find_closest_col(int h, int s, int l)
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{
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struct color_def a = { h, s, l };
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int min = 0;
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int dmin = color_distance(&a, &color_names[0]);
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for (int i = 1; i < COLOR_NAME_SIZE; i++) {
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int d = color_distance(&a, &color_names[i]);
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if (d < dmin) {
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dmin = d;
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min = i;
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}
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}
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return min;
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}
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static int
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find_col(const char* col_name, int n)
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{
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char name[32] = { 0 };
|
|
|
|
/*
|
|
* make a null terminated version of col_name. we don't want to
|
|
* use strNcasecmp because we could end up matching blue3 with
|
|
* blue.
|
|
*/
|
|
|
|
if (n >= sizeof(name)) {
|
|
/* truncate */
|
|
log_error("Color: <%s,%d> bigger than %zu", col_name, n, sizeof(name));
|
|
n = sizeof(name) - 1;
|
|
}
|
|
memcpy(name, col_name, n);
|
|
|
|
if (g_ascii_strcasecmp(name, "default") == 0) {
|
|
return -1;
|
|
}
|
|
|
|
for (int i = 0; i < COLOR_NAME_SIZE; i++) {
|
|
if (g_ascii_strcasecmp(name, color_names[i].name) == 0) {
|
|
return i;
|
|
}
|
|
}
|
|
|
|
return COL_ERR;
|
|
}
|
|
|
|
static int
|
|
color_hash(const char* str, color_profile profile)
|
|
{
|
|
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.;
|
|
|
|
switch (profile) {
|
|
case COLOR_PROFILE_REDGREEN_BLINDNESS:
|
|
// red/green blindness correction
|
|
h = fmod(fmod(h + 90., 180) - 90., 360.);
|
|
break;
|
|
case COLOR_PROFILE_BLUE_BLINDNESS:
|
|
// blue blindness correction
|
|
h = fmod(h, 180.);
|
|
default:
|
|
break;
|
|
}
|
|
|
|
rc = find_closest_col((int)h, 100, 50);
|
|
|
|
out:
|
|
g_checksum_free(cs);
|
|
return rc;
|
|
}
|
|
|
|
void
|
|
color_pair_cache_reset(void)
|
|
{
|
|
if (cache.pairs) {
|
|
free(cache.pairs);
|
|
memset(&cache, 0, sizeof(cache));
|
|
}
|
|
|
|
/*
|
|
* COLOR_PAIRS is actually not a macro and is thus not a
|
|
* compile-time constant
|
|
*/
|
|
cache.capacity = COLOR_PAIRS;
|
|
|
|
/* when we run unit tests COLOR_PAIRS will be -1 */
|
|
if (cache.capacity < 0)
|
|
cache.capacity = 8;
|
|
|
|
cache.pairs = g_malloc0(sizeof(*cache.pairs) * cache.capacity);
|
|
if (cache.pairs) {
|
|
/* default_default */
|
|
cache.pairs[0].fg = -1;
|
|
cache.pairs[0].bg = -1;
|
|
cache.size = 1;
|
|
} else {
|
|
log_error("Color: unable to allocate memory");
|
|
}
|
|
}
|
|
|
|
static int
|
|
_color_pair_cache_get(int fg, int bg)
|
|
{
|
|
if (COLORS < 256) {
|
|
if (fg > 7 || bg > 7) {
|
|
log_error("Color: trying to load 256 colour theme without capable terminal");
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
/* try to find pair in cache */
|
|
for (int i = 0; i < cache.size; i++) {
|
|
if (fg == cache.pairs[i].fg && bg == cache.pairs[i].bg) {
|
|
return i;
|
|
}
|
|
}
|
|
|
|
/* otherwise cache new pair */
|
|
|
|
if (cache.size >= cache.capacity) {
|
|
log_error("Color: reached ncurses color pair cache of %d (COLOR_PAIRS=%d)",
|
|
cache.capacity, COLOR_PAIRS);
|
|
return -1;
|
|
}
|
|
|
|
int i = cache.size;
|
|
cache.pairs[i].fg = fg;
|
|
cache.pairs[i].bg = bg;
|
|
/* (re-)define the new pair in curses */
|
|
init_pair(i, fg, bg);
|
|
|
|
cache.size++;
|
|
|
|
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
|
|
* check for 'bkgnd' in theme file or use default color as bg
|
|
*/
|
|
int
|
|
color_pair_cache_hash_str(const char* str, color_profile profile)
|
|
{
|
|
int fg = color_hash(str, profile);
|
|
int bg = -1;
|
|
|
|
char* bkgnd = theme_get_bkgnd();
|
|
if (bkgnd) {
|
|
bg = find_col(bkgnd, strlen(bkgnd));
|
|
free(bkgnd);
|
|
}
|
|
|
|
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);
|
|
}
|