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1058 lines
39 KiB
EmacsLisp
1058 lines
39 KiB
EmacsLisp
;;; tty-colors.el --- color support for character terminals
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;; Copyright (C) 1999-2019 Free Software Foundation, Inc.
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;; Author: Eli Zaretskii
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;; Maintainer: emacs-devel@gnu.org
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;; Keywords: terminals, faces
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;; This file is part of GNU Emacs.
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;; GNU Emacs 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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;; GNU Emacs 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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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
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;;; Commentary:
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;; Emacs support for colors evolved from the X Window System; color
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;; support for character-based terminals came later. Many Lisp
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;; packages use color names defined by X and assume the availability
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;; of certain functions that look up colors, convert them to pixel
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;; values, etc.
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;; This file provides a more or less useful emulation of the X color
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;; functionality for character-based terminals, and thus relieves the
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;; rest of Emacs from including special code for this case.
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;; Here's how it works. The support for terminal and MSDOS frames
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;; maintains an alist, called `tty-defined-color-alist', which
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;; associates colors supported by the terminal driver with small
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;; integers. (These small integers are passed to the library
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;; functions which set the color, and are effectively indices of the
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;; colors in the supported color palette.) When Emacs needs to send a
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;; color command to the terminal, the color name is first looked up in
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;; `tty-defined-color-alist'. If not found, functions from this file
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;; can be used to map the color to one of the supported colors.
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;; Specifically, the X RGB values of the requested color are extracted
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;; from `color-name-rgb-alist' and then the supported color is found
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;; with the minimal distance in the RGB space from the requested
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;; color.
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;; `tty-defined-color-alist' is created at startup by calling the
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;; function `tty-register-default-colors', defined below, which in
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;; turn calls `tty-color-define', passing it each supported color, its
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;; index, and its RGB values. The standard list of colors supported
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;; by many Unix color terminals, including xterm, FreeBSD, and
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;; GNU/Linux, is supplied below in `tty-standard-colors'. Some
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;; terminal-specific files in lisp/term define their own standard
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;; colors. If your terminal supports different or additional colors,
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;; call `tty-color-define' from your `.emacs' or `site-start.el'. For
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;; more-or-less standard definitions of VGA text-mode colors, see
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;; lisp/term/pc-win.el.
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;;; Code:
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;; The following list is taken from rgb.txt distributed with X.
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;;
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;; WARNING: Some colors, such as "lightred", do not appear in this
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;; list. If you think it's a good idea to add them, don't! The
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;; problem is that the X-standard definition of "red" actually
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;; corresponds to "lightred" on VGA (that's why pc-win.el and
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;; w32-fns.el define "lightred" with the same RGB values as "red"
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;; below). Adding "lightred" here would therefore create confusing
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;; and counter-intuitive results, like "red" and "lightred" being the
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;; same color. A similar situation exists with other "light*" colors.
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;;
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;; Nevertheless, "lightred" and other similar color names *are*
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;; defined for the MS-DOS and MS-Windows consoles, because the users
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;; on those systems expect these colors to be available.
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;;
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;; For these reasons, package maintainers are advised NOT to use color
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;; names such as "lightred" or "lightblue", because they will have
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;; different effect on different displays. Instead, use "red1" and
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;; "blue1", respectively.
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;;
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;; Note: the RGB values below are in the range 0-65535, but are derived
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;; from the standard 8-bit X definitions (so the upper and lower bytes
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;; of each value are actually identical).
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;;
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(defconst color-name-rgb-alist
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'(("snow" 65535 64250 64250)
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("ghostwhite" 63736 63736 65535)
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("whitesmoke" 62965 62965 62965)
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("gainsboro" 56540 56540 56540)
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("floralwhite" 65535 64250 61680)
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("oldlace" 65021 62965 59110)
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("linen" 64250 61680 59110)
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("antiquewhite" 64250 60395 55255)
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("papayawhip" 65535 61423 54741)
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("blanchedalmond" 65535 60395 52685)
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("bisque" 65535 58596 50372)
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("peachpuff" 65535 56026 47545)
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("navajowhite" 65535 57054 44461)
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("moccasin" 65535 58596 46517)
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("cornsilk" 65535 63736 56540)
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("ivory" 65535 65535 61680)
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("lemonchiffon" 65535 64250 52685)
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("seashell" 65535 62965 61166)
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("honeydew" 61680 65535 61680)
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("mintcream" 62965 65535 64250)
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("azure" 61680 65535 65535)
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("aliceblue" 61680 63736 65535)
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("lavender" 59110 59110 64250)
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("lavenderblush" 65535 61680 62965)
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("mistyrose" 65535 58596 57825)
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("white" 65535 65535 65535)
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("black" 0 0 0)
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("darkslategray" 12079 20303 20303)
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("darkslategrey" 12079 20303 20303)
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("dimgray" 26985 26985 26985)
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("dimgrey" 26985 26985 26985)
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("slategray" 28784 32896 37008)
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("slategrey" 28784 32896 37008)
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("lightslategray" 30583 34952 39321)
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("lightslategrey" 30583 34952 39321)
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("gray" 48830 48830 48830)
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("grey" 48830 48830 48830)
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("lightgrey" 54227 54227 54227)
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("lightgray" 54227 54227 54227)
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("midnightblue" 6425 6425 28784)
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("navy" 0 0 32896)
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("navyblue" 0 0 32896)
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("cornflowerblue" 25700 38293 60909)
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("darkslateblue" 18504 15677 35723)
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("slateblue" 27242 23130 52685)
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("mediumslateblue" 31611 26728 61166)
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("lightslateblue" 33924 28784 65535)
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("mediumblue" 0 0 52685)
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("royalblue" 16705 26985 57825)
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("blue" 0 0 65535)
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("dodgerblue" 7710 37008 65535)
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("deepskyblue" 0 49087 65535)
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("skyblue" 34695 52942 60395)
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("lightskyblue" 34695 52942 64250)
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("steelblue" 17990 33410 46260)
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("lightsteelblue" 45232 50372 57054)
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("lightblue" 44461 55512 59110)
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("powderblue" 45232 57568 59110)
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("paleturquoise" 44975 61166 61166)
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("darkturquoise" 0 52942 53713)
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("mediumturquoise" 18504 53713 52428)
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("turquoise" 16448 57568 53456)
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("cyan" 0 65535 65535)
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("lightcyan" 57568 65535 65535)
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("cadetblue" 24415 40606 41120)
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("mediumaquamarine" 26214 52685 43690)
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("aquamarine" 32639 65535 54484)
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("darkgreen" 0 25700 0)
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("darkolivegreen" 21845 27499 12079)
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("darkseagreen" 36751 48316 36751)
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("seagreen" 11822 35723 22359)
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("mediumseagreen" 15420 46003 29041)
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("lightseagreen" 8224 45746 43690)
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("palegreen" 39064 64507 39064)
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("springgreen" 0 65535 32639)
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("lawngreen" 31868 64764 0)
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("green" 0 65535 0)
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("chartreuse" 32639 65535 0)
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("mediumspringgreen" 0 64250 39578)
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("greenyellow" 44461 65535 12079)
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("limegreen" 12850 52685 12850)
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("yellowgreen" 39578 52685 12850)
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("forestgreen" 8738 35723 8738)
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("olivedrab" 27499 36494 8995)
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("darkkhaki" 48573 47031 27499)
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("khaki" 61680 59110 35980)
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("palegoldenrod" 61166 59624 43690)
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("lightgoldenrodyellow" 64250 64250 53970)
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("lightyellow" 65535 65535 57568)
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("yellow" 65535 65535 0)
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("gold" 65535 55255 0)
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("lightgoldenrod" 61166 56797 33410)
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("goldenrod" 56026 42405 8224)
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("darkgoldenrod" 47288 34438 2827)
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("rosybrown" 48316 36751 36751)
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("indianred" 52685 23644 23644)
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("saddlebrown" 35723 17733 4883)
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("sienna" 41120 21074 11565)
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("peru" 52685 34181 16191)
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("burlywood" 57054 47288 34695)
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("beige" 62965 62965 56540)
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("wheat" 62965 57054 46003)
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("sandybrown" 62708 42148 24672)
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("tan" 53970 46260 35980)
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("chocolate" 53970 26985 7710)
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("firebrick" 45746 8738 8738)
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("brown" 42405 10794 10794)
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("darksalmon" 59881 38550 31354)
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("salmon" 64250 32896 29298)
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("lightsalmon" 65535 41120 31354)
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("orange" 65535 42405 0)
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("darkorange" 65535 35980 0)
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("coral" 65535 32639 20560)
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("lightcoral" 61680 32896 32896)
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("tomato" 65535 25443 18247)
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("orangered" 65535 17733 0)
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("red" 65535 0 0)
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("hotpink" 65535 26985 46260)
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("deeppink" 65535 5140 37779)
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("pink" 65535 49344 52171)
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("lightpink" 65535 46774 49601)
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("palevioletred" 56283 28784 37779)
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("maroon" 45232 12336 24672)
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("mediumvioletred" 51143 5397 34181)
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("violetred" 53456 8224 37008)
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("magenta" 65535 0 65535)
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("violet" 61166 33410 61166)
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("plum" 56797 41120 56797)
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("orchid" 56026 28784 54998)
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("mediumorchid" 47802 21845 54227)
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("darkorchid" 39321 12850 52428)
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("darkviolet" 38036 0 54227)
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("blueviolet" 35466 11051 58082)
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("purple" 41120 8224 61680)
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("mediumpurple" 37779 28784 56283)
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("thistle" 55512 49087 55512)
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("snow1" 65535 64250 64250)
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("snow2" 61166 59881 59881)
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("snow3" 52685 51657 51657)
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("snow4" 35723 35209 35209)
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("seashell1" 65535 62965 61166)
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("seashell2" 61166 58853 57054)
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("seashell3" 52685 50629 49087)
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("seashell4" 35723 34438 33410)
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("antiquewhite1" 65535 61423 56283)
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("antiquewhite2" 61166 57311 52428)
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("antiquewhite3" 52685 49344 45232)
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("antiquewhite4" 35723 33667 30840)
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("bisque1" 65535 58596 50372)
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("bisque2" 61166 54741 47031)
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("bisque3" 52685 47031 40606)
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("bisque4" 35723 32125 27499)
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("peachpuff1" 65535 56026 47545)
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("peachpuff2" 61166 52171 44461)
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("peachpuff3" 52685 44975 38293)
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("peachpuff4" 35723 30583 25957)
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("navajowhite1" 65535 57054 44461)
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("navajowhite2" 61166 53199 41377)
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("navajowhite3" 52685 46003 35723)
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("navajowhite4" 35723 31097 24158)
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("lemonchiffon1" 65535 64250 52685)
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("lemonchiffon2" 61166 59881 49087)
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("lemonchiffon3" 52685 51657 42405)
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("lemonchiffon4" 35723 35209 28784)
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("cornsilk1" 65535 63736 56540)
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("cornsilk2" 61166 59624 52685)
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("cornsilk3" 52685 51400 45489)
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("cornsilk4" 35723 34952 30840)
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("ivory1" 65535 65535 61680)
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("ivory2" 61166 61166 57568)
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("ivory3" 52685 52685 49601)
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("ivory4" 35723 35723 33667)
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("honeydew1" 61680 65535 61680)
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("honeydew2" 57568 61166 57568)
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("honeydew3" 49601 52685 49601)
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("honeydew4" 33667 35723 33667)
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("lavenderblush1" 65535 61680 62965)
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("lavenderblush2" 61166 57568 58853)
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("lavenderblush3" 52685 49601 50629)
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("lavenderblush4" 35723 33667 34438)
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("mistyrose1" 65535 58596 57825)
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("mistyrose2" 61166 54741 53970)
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("mistyrose3" 52685 47031 46517)
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("mistyrose4" 35723 32125 31611)
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("azure1" 61680 65535 65535)
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("azure2" 57568 61166 61166)
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("azure3" 49601 52685 52685)
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("azure4" 33667 35723 35723)
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("slateblue1" 33667 28527 65535)
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("slateblue2" 31354 26471 61166)
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("slateblue3" 26985 22873 52685)
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("slateblue4" 18247 15420 35723)
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("royalblue1" 18504 30326 65535)
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("royalblue2" 17219 28270 61166)
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("royalblue3" 14906 24415 52685)
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("royalblue4" 10023 16448 35723)
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("blue1" 0 0 65535)
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("blue2" 0 0 61166)
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("blue3" 0 0 52685)
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("blue4" 0 0 35723)
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("dodgerblue1" 7710 37008 65535)
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("dodgerblue2" 7196 34438 61166)
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("dodgerblue3" 6168 29812 52685)
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("dodgerblue4" 4112 20046 35723)
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("steelblue1" 25443 47288 65535)
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("steelblue2" 23644 44204 61166)
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("steelblue3" 20303 38036 52685)
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("steelblue4" 13878 25700 35723)
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("deepskyblue1" 0 49087 65535)
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("deepskyblue2" 0 45746 61166)
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("deepskyblue3" 0 39578 52685)
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("deepskyblue4" 0 26728 35723)
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("skyblue1" 34695 52942 65535)
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("skyblue2" 32382 49344 61166)
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("skyblue3" 27756 42662 52685)
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("skyblue4" 19018 28784 35723)
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("lightskyblue1" 45232 58082 65535)
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("lightskyblue2" 42148 54227 61166)
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("lightskyblue3" 36237 46774 52685)
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("lightskyblue4" 24672 31611 35723)
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("slategray1" 50886 58082 65535)
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("slategray2" 47545 54227 61166)
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("slategray3" 40863 46774 52685)
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("slategray4" 27756 31611 35723)
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("lightsteelblue1" 51914 57825 65535)
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("lightsteelblue2" 48316 53970 61166)
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("lightsteelblue3" 41634 46517 52685)
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("lightsteelblue4" 28270 31611 35723)
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("lightblue1" 49087 61423 65535)
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("lightblue2" 45746 57311 61166)
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("lightblue3" 39578 49344 52685)
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("lightblue4" 26728 33667 35723)
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("lightcyan1" 57568 65535 65535)
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("lightcyan2" 53713 61166 61166)
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("lightcyan3" 46260 52685 52685)
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("lightcyan4" 31354 35723 35723)
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("paleturquoise1" 48059 65535 65535)
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("paleturquoise2" 44718 61166 61166)
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("paleturquoise3" 38550 52685 52685)
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("paleturquoise4" 26214 35723 35723)
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("cadetblue1" 39064 62965 65535)
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("cadetblue2" 36494 58853 61166)
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("cadetblue3" 31354 50629 52685)
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("cadetblue4" 21331 34438 35723)
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("turquoise1" 0 62965 65535)
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("turquoise2" 0 58853 61166)
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("turquoise3" 0 50629 52685)
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("turquoise4" 0 34438 35723)
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("cyan1" 0 65535 65535)
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("cyan2" 0 61166 61166)
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("cyan3" 0 52685 52685)
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("cyan4" 0 35723 35723)
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("darkslategray1" 38807 65535 65535)
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("darkslategray2" 36237 61166 61166)
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("darkslategray3" 31097 52685 52685)
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("darkslategray4" 21074 35723 35723)
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("aquamarine1" 32639 65535 54484)
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("aquamarine2" 30326 61166 50886)
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("aquamarine3" 26214 52685 43690)
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("aquamarine4" 17733 35723 29812)
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("darkseagreen1" 49601 65535 49601)
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("darkseagreen2" 46260 61166 46260)
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("darkseagreen3" 39835 52685 39835)
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("darkseagreen4" 26985 35723 26985)
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("seagreen1" 21588 65535 40863)
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("seagreen2" 20046 61166 38036)
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("seagreen3" 17219 52685 32896)
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("seagreen4" 11822 35723 22359)
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("palegreen1" 39578 65535 39578)
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("palegreen2" 37008 61166 37008)
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("palegreen3" 31868 52685 31868)
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("palegreen4" 21588 35723 21588)
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("springgreen1" 0 65535 32639)
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("springgreen2" 0 61166 30326)
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("springgreen3" 0 52685 26214)
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("springgreen4" 0 35723 17733)
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("green1" 0 65535 0)
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("green2" 0 61166 0)
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("green3" 0 52685 0)
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("green4" 0 35723 0)
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("chartreuse1" 32639 65535 0)
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("chartreuse2" 30326 61166 0)
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("chartreuse3" 26214 52685 0)
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("chartreuse4" 17733 35723 0)
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("olivedrab1" 49344 65535 15934)
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("olivedrab2" 46003 61166 14906)
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("olivedrab3" 39578 52685 12850)
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("olivedrab4" 26985 35723 8738)
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("darkolivegreen1" 51914 65535 28784)
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("darkolivegreen2" 48316 61166 26728)
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("darkolivegreen3" 41634 52685 23130)
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("darkolivegreen4" 28270 35723 15677)
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("khaki1" 65535 63222 36751)
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("khaki2" 61166 59110 34181)
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("khaki3" 52685 50886 29555)
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("khaki4" 35723 34438 20046)
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("lightgoldenrod1" 65535 60652 35723)
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("lightgoldenrod2" 61166 56540 33410)
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("lightgoldenrod3" 52685 48830 28784)
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("lightgoldenrod4" 35723 33153 19532)
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("lightyellow1" 65535 65535 57568)
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("lightyellow2" 61166 61166 53713)
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("lightyellow3" 52685 52685 46260)
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("lightyellow4" 35723 35723 31354)
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("yellow1" 65535 65535 0)
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("yellow2" 61166 61166 0)
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("yellow3" 52685 52685 0)
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("yellow4" 35723 35723 0)
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("gold1" 65535 55255 0)
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("gold2" 61166 51657 0)
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("gold3" 52685 44461 0)
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("gold4" 35723 30069 0)
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("goldenrod1" 65535 49601 9509)
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("goldenrod2" 61166 46260 8738)
|
|
("goldenrod3" 52685 39835 7453)
|
|
("goldenrod4" 35723 26985 5140)
|
|
("darkgoldenrod1" 65535 47545 3855)
|
|
("darkgoldenrod2" 61166 44461 3598)
|
|
("darkgoldenrod3" 52685 38293 3084)
|
|
("darkgoldenrod4" 35723 25957 2056)
|
|
("rosybrown1" 65535 49601 49601)
|
|
("rosybrown2" 61166 46260 46260)
|
|
("rosybrown3" 52685 39835 39835)
|
|
("rosybrown4" 35723 26985 26985)
|
|
("indianred1" 65535 27242 27242)
|
|
("indianred2" 61166 25443 25443)
|
|
("indianred3" 52685 21845 21845)
|
|
("indianred4" 35723 14906 14906)
|
|
("sienna1" 65535 33410 18247)
|
|
("sienna2" 61166 31097 16962)
|
|
("sienna3" 52685 26728 14649)
|
|
("sienna4" 35723 18247 9766)
|
|
("burlywood1" 65535 54227 39835)
|
|
("burlywood2" 61166 50629 37265)
|
|
("burlywood3" 52685 43690 32125)
|
|
("burlywood4" 35723 29555 21845)
|
|
("wheat1" 65535 59367 47802)
|
|
("wheat2" 61166 55512 44718)
|
|
("wheat3" 52685 47802 38550)
|
|
("wheat4" 35723 32382 26214)
|
|
("tan1" 65535 42405 20303)
|
|
("tan2" 61166 39578 18761)
|
|
("tan3" 52685 34181 16191)
|
|
("tan4" 35723 23130 11051)
|
|
("chocolate1" 65535 32639 9252)
|
|
("chocolate2" 61166 30326 8481)
|
|
("chocolate3" 52685 26214 7453)
|
|
("chocolate4" 35723 17733 4883)
|
|
("firebrick1" 65535 12336 12336)
|
|
("firebrick2" 61166 11308 11308)
|
|
("firebrick3" 52685 9766 9766)
|
|
("firebrick4" 35723 6682 6682)
|
|
("brown1" 65535 16448 16448)
|
|
("brown2" 61166 15163 15163)
|
|
("brown3" 52685 13107 13107)
|
|
("brown4" 35723 8995 8995)
|
|
("salmon1" 65535 35980 26985)
|
|
("salmon2" 61166 33410 25186)
|
|
("salmon3" 52685 28784 21588)
|
|
("salmon4" 35723 19532 14649)
|
|
("lightsalmon1" 65535 41120 31354)
|
|
("lightsalmon2" 61166 38293 29298)
|
|
("lightsalmon3" 52685 33153 25186)
|
|
("lightsalmon4" 35723 22359 16962)
|
|
("orange1" 65535 42405 0)
|
|
("orange2" 61166 39578 0)
|
|
("orange3" 52685 34181 0)
|
|
("orange4" 35723 23130 0)
|
|
("darkorange1" 65535 32639 0)
|
|
("darkorange2" 61166 30326 0)
|
|
("darkorange3" 52685 26214 0)
|
|
("darkorange4" 35723 17733 0)
|
|
("coral1" 65535 29298 22102)
|
|
("coral2" 61166 27242 20560)
|
|
("coral3" 52685 23387 17733)
|
|
("coral4" 35723 15934 12079)
|
|
("tomato1" 65535 25443 18247)
|
|
("tomato2" 61166 23644 16962)
|
|
("tomato3" 52685 20303 14649)
|
|
("tomato4" 35723 13878 9766)
|
|
("orangered1" 65535 17733 0)
|
|
("orangered2" 61166 16448 0)
|
|
("orangered3" 52685 14135 0)
|
|
("orangered4" 35723 9509 0)
|
|
("red1" 65535 0 0)
|
|
("red2" 61166 0 0)
|
|
("red3" 52685 0 0)
|
|
("red4" 35723 0 0)
|
|
("deeppink1" 65535 5140 37779)
|
|
("deeppink2" 61166 4626 35209)
|
|
("deeppink3" 52685 4112 30326)
|
|
("deeppink4" 35723 2570 20560)
|
|
("hotpink1" 65535 28270 46260)
|
|
("hotpink2" 61166 27242 42919)
|
|
("hotpink3" 52685 24672 37008)
|
|
("hotpink4" 35723 14906 25186)
|
|
("pink1" 65535 46517 50629)
|
|
("pink2" 61166 43433 47288)
|
|
("pink3" 52685 37265 40606)
|
|
("pink4" 35723 25443 27756)
|
|
("lightpink1" 65535 44718 47545)
|
|
("lightpink2" 61166 41634 44461)
|
|
("lightpink3" 52685 35980 38293)
|
|
("lightpink4" 35723 24415 25957)
|
|
("palevioletred1" 65535 33410 43947)
|
|
("palevioletred2" 61166 31097 40863)
|
|
("palevioletred3" 52685 26728 35209)
|
|
("palevioletred4" 35723 18247 23901)
|
|
("maroon1" 65535 13364 46003)
|
|
("maroon2" 61166 12336 42919)
|
|
("maroon3" 52685 10537 37008)
|
|
("maroon4" 35723 7196 25186)
|
|
("violetred1" 65535 15934 38550)
|
|
("violetred2" 61166 14906 35980)
|
|
("violetred3" 52685 12850 30840)
|
|
("violetred4" 35723 8738 21074)
|
|
("magenta1" 65535 0 65535)
|
|
("magenta2" 61166 0 61166)
|
|
("magenta3" 52685 0 52685)
|
|
("magenta4" 35723 0 35723)
|
|
("orchid1" 65535 33667 64250)
|
|
("orchid2" 61166 31354 59881)
|
|
("orchid3" 52685 26985 51657)
|
|
("orchid4" 35723 18247 35209)
|
|
("plum1" 65535 48059 65535)
|
|
("plum2" 61166 44718 61166)
|
|
("plum3" 52685 38550 52685)
|
|
("plum4" 35723 26214 35723)
|
|
("mediumorchid1" 57568 26214 65535)
|
|
("mediumorchid2" 53713 24415 61166)
|
|
("mediumorchid3" 46260 21074 52685)
|
|
("mediumorchid4" 31354 14135 35723)
|
|
("darkorchid1" 49087 15934 65535)
|
|
("darkorchid2" 45746 14906 61166)
|
|
("darkorchid3" 39578 12850 52685)
|
|
("darkorchid4" 26728 8738 35723)
|
|
("purple1" 39835 12336 65535)
|
|
("purple2" 37265 11308 61166)
|
|
("purple3" 32125 9766 52685)
|
|
("purple4" 21845 6682 35723)
|
|
("mediumpurple1" 43947 33410 65535)
|
|
("mediumpurple2" 40863 31097 61166)
|
|
("mediumpurple3" 35209 26728 52685)
|
|
("mediumpurple4" 23901 18247 35723)
|
|
("thistle1" 65535 57825 65535)
|
|
("thistle2" 61166 53970 61166)
|
|
("thistle3" 52685 46517 52685)
|
|
("thistle4" 35723 31611 35723)
|
|
("gray0" 0 0 0)
|
|
("grey0" 0 0 0)
|
|
("gray1" 771 771 771)
|
|
("grey1" 771 771 771)
|
|
("gray2" 1285 1285 1285)
|
|
("grey2" 1285 1285 1285)
|
|
("gray3" 2056 2056 2056)
|
|
("grey3" 2056 2056 2056)
|
|
("gray4" 2570 2570 2570)
|
|
("grey4" 2570 2570 2570)
|
|
("gray5" 3341 3341 3341)
|
|
("grey5" 3341 3341 3341)
|
|
("gray6" 3855 3855 3855)
|
|
("grey6" 3855 3855 3855)
|
|
("gray7" 4626 4626 4626)
|
|
("grey7" 4626 4626 4626)
|
|
("gray8" 5140 5140 5140)
|
|
("grey8" 5140 5140 5140)
|
|
("gray9" 5911 5911 5911)
|
|
("grey9" 5911 5911 5911)
|
|
("gray10" 6682 6682 6682)
|
|
("grey10" 6682 6682 6682)
|
|
("gray11" 7196 7196 7196)
|
|
("grey11" 7196 7196 7196)
|
|
("gray12" 7967 7967 7967)
|
|
("grey12" 7967 7967 7967)
|
|
("gray13" 8481 8481 8481)
|
|
("grey13" 8481 8481 8481)
|
|
("gray14" 9252 9252 9252)
|
|
("grey14" 9252 9252 9252)
|
|
("gray15" 9766 9766 9766)
|
|
("grey15" 9766 9766 9766)
|
|
("gray16" 10537 10537 10537)
|
|
("grey16" 10537 10537 10537)
|
|
("gray17" 11051 11051 11051)
|
|
("grey17" 11051 11051 11051)
|
|
("gray18" 11822 11822 11822)
|
|
("grey18" 11822 11822 11822)
|
|
("gray19" 12336 12336 12336)
|
|
("grey19" 12336 12336 12336)
|
|
("gray20" 13107 13107 13107)
|
|
("grey20" 13107 13107 13107)
|
|
("gray21" 13878 13878 13878)
|
|
("grey21" 13878 13878 13878)
|
|
("gray22" 14392 14392 14392)
|
|
("grey22" 14392 14392 14392)
|
|
("gray23" 15163 15163 15163)
|
|
("grey23" 15163 15163 15163)
|
|
("gray24" 15677 15677 15677)
|
|
("grey24" 15677 15677 15677)
|
|
("gray25" 16448 16448 16448)
|
|
("grey25" 16448 16448 16448)
|
|
("gray26" 16962 16962 16962)
|
|
("grey26" 16962 16962 16962)
|
|
("gray27" 17733 17733 17733)
|
|
("grey27" 17733 17733 17733)
|
|
("gray28" 18247 18247 18247)
|
|
("grey28" 18247 18247 18247)
|
|
("gray29" 19018 19018 19018)
|
|
("grey29" 19018 19018 19018)
|
|
("gray30" 19789 19789 19789)
|
|
("grey30" 19789 19789 19789)
|
|
("gray31" 20303 20303 20303)
|
|
("grey31" 20303 20303 20303)
|
|
("gray32" 21074 21074 21074)
|
|
("grey32" 21074 21074 21074)
|
|
("gray33" 21588 21588 21588)
|
|
("grey33" 21588 21588 21588)
|
|
("gray34" 22359 22359 22359)
|
|
("grey34" 22359 22359 22359)
|
|
("gray35" 22873 22873 22873)
|
|
("grey35" 22873 22873 22873)
|
|
("gray36" 23644 23644 23644)
|
|
("grey36" 23644 23644 23644)
|
|
("gray37" 24158 24158 24158)
|
|
("grey37" 24158 24158 24158)
|
|
("gray38" 24929 24929 24929)
|
|
("grey38" 24929 24929 24929)
|
|
("gray39" 25443 25443 25443)
|
|
("grey39" 25443 25443 25443)
|
|
("gray40" 26214 26214 26214)
|
|
("grey40" 26214 26214 26214)
|
|
("gray41" 26985 26985 26985)
|
|
("grey41" 26985 26985 26985)
|
|
("gray42" 27499 27499 27499)
|
|
("grey42" 27499 27499 27499)
|
|
("gray43" 28270 28270 28270)
|
|
("grey43" 28270 28270 28270)
|
|
("gray44" 28784 28784 28784)
|
|
("grey44" 28784 28784 28784)
|
|
("gray45" 29555 29555 29555)
|
|
("grey45" 29555 29555 29555)
|
|
("gray46" 30069 30069 30069)
|
|
("grey46" 30069 30069 30069)
|
|
("gray47" 30840 30840 30840)
|
|
("grey47" 30840 30840 30840)
|
|
("gray48" 31354 31354 31354)
|
|
("grey48" 31354 31354 31354)
|
|
("gray49" 32125 32125 32125)
|
|
("grey49" 32125 32125 32125)
|
|
("gray50" 32639 32639 32639)
|
|
("grey50" 32639 32639 32639)
|
|
("gray51" 33410 33410 33410)
|
|
("grey51" 33410 33410 33410)
|
|
("gray52" 34181 34181 34181)
|
|
("grey52" 34181 34181 34181)
|
|
("gray53" 34695 34695 34695)
|
|
("grey53" 34695 34695 34695)
|
|
("gray54" 35466 35466 35466)
|
|
("grey54" 35466 35466 35466)
|
|
("gray55" 35980 35980 35980)
|
|
("grey55" 35980 35980 35980)
|
|
("gray56" 36751 36751 36751)
|
|
("grey56" 36751 36751 36751)
|
|
("gray57" 37265 37265 37265)
|
|
("grey57" 37265 37265 37265)
|
|
("gray58" 38036 38036 38036)
|
|
("grey58" 38036 38036 38036)
|
|
("gray59" 38550 38550 38550)
|
|
("grey59" 38550 38550 38550)
|
|
("gray60" 39321 39321 39321)
|
|
("grey60" 39321 39321 39321)
|
|
("gray61" 40092 40092 40092)
|
|
("grey61" 40092 40092 40092)
|
|
("gray62" 40606 40606 40606)
|
|
("grey62" 40606 40606 40606)
|
|
("gray63" 41377 41377 41377)
|
|
("grey63" 41377 41377 41377)
|
|
("gray64" 41891 41891 41891)
|
|
("grey64" 41891 41891 41891)
|
|
("gray65" 42662 42662 42662)
|
|
("grey65" 42662 42662 42662)
|
|
("gray66" 43176 43176 43176)
|
|
("grey66" 43176 43176 43176)
|
|
("gray67" 43947 43947 43947)
|
|
("grey67" 43947 43947 43947)
|
|
("gray68" 44461 44461 44461)
|
|
("grey68" 44461 44461 44461)
|
|
("gray69" 45232 45232 45232)
|
|
("grey69" 45232 45232 45232)
|
|
("gray70" 46003 46003 46003)
|
|
("grey70" 46003 46003 46003)
|
|
("gray71" 46517 46517 46517)
|
|
("grey71" 46517 46517 46517)
|
|
("gray72" 47288 47288 47288)
|
|
("grey72" 47288 47288 47288)
|
|
("gray73" 47802 47802 47802)
|
|
("grey73" 47802 47802 47802)
|
|
("gray74" 48573 48573 48573)
|
|
("grey74" 48573 48573 48573)
|
|
("gray75" 49087 49087 49087)
|
|
("grey75" 49087 49087 49087)
|
|
("gray76" 49858 49858 49858)
|
|
("grey76" 49858 49858 49858)
|
|
("gray77" 50372 50372 50372)
|
|
("grey77" 50372 50372 50372)
|
|
("gray78" 51143 51143 51143)
|
|
("grey78" 51143 51143 51143)
|
|
("gray79" 51657 51657 51657)
|
|
("grey79" 51657 51657 51657)
|
|
("gray80" 52428 52428 52428)
|
|
("grey80" 52428 52428 52428)
|
|
("gray81" 53199 53199 53199)
|
|
("grey81" 53199 53199 53199)
|
|
("gray82" 53713 53713 53713)
|
|
("grey82" 53713 53713 53713)
|
|
("gray83" 54484 54484 54484)
|
|
("grey83" 54484 54484 54484)
|
|
("gray84" 54998 54998 54998)
|
|
("grey84" 54998 54998 54998)
|
|
("gray85" 55769 55769 55769)
|
|
("grey85" 55769 55769 55769)
|
|
("gray86" 56283 56283 56283)
|
|
("grey86" 56283 56283 56283)
|
|
("gray87" 57054 57054 57054)
|
|
("grey87" 57054 57054 57054)
|
|
("gray88" 57568 57568 57568)
|
|
("grey88" 57568 57568 57568)
|
|
("gray89" 58339 58339 58339)
|
|
("grey89" 58339 58339 58339)
|
|
("gray90" 58853 58853 58853)
|
|
("grey90" 58853 58853 58853)
|
|
("gray91" 59624 59624 59624)
|
|
("grey91" 59624 59624 59624)
|
|
("gray92" 60395 60395 60395)
|
|
("grey92" 60395 60395 60395)
|
|
("gray93" 60909 60909 60909)
|
|
("grey93" 60909 60909 60909)
|
|
("gray94" 61680 61680 61680)
|
|
("grey94" 61680 61680 61680)
|
|
("gray95" 62194 62194 62194)
|
|
("grey95" 62194 62194 62194)
|
|
("gray96" 62965 62965 62965)
|
|
("grey96" 62965 62965 62965)
|
|
("gray97" 63479 63479 63479)
|
|
("grey97" 63479 63479 63479)
|
|
("gray98" 64250 64250 64250)
|
|
("grey98" 64250 64250 64250)
|
|
("gray99" 64764 64764 64764)
|
|
("grey99" 64764 64764 64764)
|
|
("gray100" 65535 65535 65535)
|
|
("grey100" 65535 65535 65535)
|
|
("darkgrey" 43433 43433 43433)
|
|
("darkgray" 43433 43433 43433)
|
|
("darkblue" 0 0 35723)
|
|
("darkcyan" 0 35723 35723) ; no "lightmagenta", see comment above
|
|
("darkmagenta" 35723 0 35723)
|
|
("darkred" 35723 0 0) ; but no "lightred", see comment above
|
|
("lightgreen" 37008 61166 37008))
|
|
"An alist of X color names and associated 16-bit RGB values.")
|
|
|
|
(defconst tty-standard-colors
|
|
'(("black" 0 0 0 0)
|
|
("red" 1 65535 0 0)
|
|
("green" 2 0 65535 0)
|
|
("yellow" 3 65535 65535 0)
|
|
("blue" 4 0 0 65535)
|
|
("magenta" 5 65535 0 65535)
|
|
("cyan" 6 0 65535 65535)
|
|
("white" 7 65535 65535 65535))
|
|
"An alist of 8 standard tty colors, their indices and RGB values.")
|
|
|
|
;; This is used by term.c
|
|
(defconst tty-color-mode-alist
|
|
'((never . -1)
|
|
(no . -1)
|
|
(default . 0)
|
|
(auto . 0)
|
|
(ansi8 . 8)
|
|
(always . 8)
|
|
(yes . 8))
|
|
"An alist of supported standard tty color modes and their aliases.")
|
|
|
|
(defun tty-color-alist (&optional _frame)
|
|
"Return an alist of colors supported by FRAME's terminal.
|
|
FRAME defaults to the selected frame.
|
|
Each element of the returned alist is of the form:
|
|
(NAME INDEX R G B)
|
|
where NAME is the name of the color, a string;
|
|
INDEX is the index of this color to be sent to the terminal driver
|
|
when the color should be displayed; it is typically a small integer;
|
|
R, G, and B are the intensities of, accordingly, red, green, and blue
|
|
components of the color, represented as numbers between 0 and 65535.
|
|
The file `etc/rgb.txt' in the Emacs distribution lists the standard
|
|
RGB values of the X colors. If RGB is nil, this color will not be
|
|
considered by `tty-color-translate' as an approximation to another
|
|
color."
|
|
tty-defined-color-alist)
|
|
|
|
(defun tty-modify-color-alist (elt &optional frame)
|
|
"Put the association ELT into the alist of terminal colors for FRAME.
|
|
ELT should be of the form (NAME INDEX R G B) (see `tty-color-alist'
|
|
for details).
|
|
If the association for NAME already exists in the color alist, it is
|
|
modified to specify (INDEX R G B) as its cdr. Otherwise, ELT is
|
|
appended to the end of the color alist.
|
|
If FRAME is unspecified or nil, it defaults to the selected frame.
|
|
Value is the modified color alist for FRAME."
|
|
(let* ((entry (assoc (car elt) (tty-color-alist frame))))
|
|
(if entry
|
|
(setcdr entry (cdr elt))
|
|
;; Keep the colors in the order they are registered.
|
|
(setq entry
|
|
(list (append (list (car elt)
|
|
(cadr elt))
|
|
(copy-sequence (cddr elt)))))
|
|
(setq tty-defined-color-alist (nconc tty-defined-color-alist entry)))
|
|
tty-defined-color-alist))
|
|
|
|
(defun tty-register-default-colors ()
|
|
"Register the default set of colors for a character terminal."
|
|
(let* ((colors tty-standard-colors)
|
|
(color (car colors)))
|
|
(while colors
|
|
(tty-color-define (car color) (cadr color) (cddr color))
|
|
(setq colors (cdr colors) color (car colors)))
|
|
;; Modifying color mappings means realized faces don't use the
|
|
;; right colors, so clear them, if we modified colors on a TTY
|
|
;; frame.
|
|
(or (display-graphic-p)
|
|
(clear-face-cache))))
|
|
|
|
(defun tty-color-canonicalize (color)
|
|
"Return COLOR in canonical form.
|
|
A canonicalized color name is all-lower case, with any blanks removed."
|
|
(let ((case-fold-search nil))
|
|
(if (string-match "[A-Z ]" color)
|
|
(replace-regexp-in-string " +" "" (downcase color))
|
|
color)))
|
|
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(defun tty-color-24bit (rgb &optional display)
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"Return 24-bit color pixel value for RGB value on DISPLAY.
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DISPLAY can be a display name or a frame, and defaults to the
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selected frame's display.
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If DISPLAY is not on a 24-but TTY terminal, return nil."
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(when (and rgb (= (display-color-cells display) 16777216))
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(let ((r (ash (car rgb) -8))
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(g (ash (cadr rgb) -8))
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(b (ash (nth 2 rgb) -8)))
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(logior (ash r 16) (ash g 8) b))))
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(defun tty-color-define (name index &optional rgb frame)
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"Specify a tty color by its NAME, terminal INDEX and RGB values.
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NAME is a string, INDEX is typically a small integer used to send to
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the terminal driver a command to switch this color on, and RGB is a
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list of 3 numbers that specify the intensity of red, green, and blue
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components of the color.
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If specified, each one of the RGB components must be a number between
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0 and 65535. If RGB is omitted, the specified color will never be used
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by `tty-color-translate' as an approximation to another color.
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FRAME is the frame where the defined color should be used.
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If FRAME is not specified or is nil, it defaults to the selected frame."
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(if (or (not (stringp name))
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(not (integerp index))
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(and rgb (or (not (listp rgb)) (/= (length rgb) 3))))
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(error "Invalid specification for tty color \"%s\"" name))
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(tty-modify-color-alist
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(append (list (tty-color-canonicalize name)
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(or (tty-color-24bit rgb frame) index))
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rgb)
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frame))
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(defun tty-color-clear (&optional _frame)
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"Clear the list of supported tty colors for frame FRAME.
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If FRAME is unspecified or nil, it defaults to the selected frame."
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(setq tty-defined-color-alist nil))
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(defun tty-color-off-gray-diag (r g b)
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"Compute the angle between the color given by R,G,B and the gray diagonal.
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The gray diagonal is the diagonal of the 3D cube in RGB space which
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connects the points corresponding to the black and white colors. All the
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colors whose RGB coordinates belong to this diagonal are various shades
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of gray, thus the name."
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(let ((mag (sqrt (* 3 (+ (* r r) (* g g) (* b b))))))
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(if (< mag 1) 0 (acos (/ (+ r g b) mag)))))
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(defun tty-color-approximate (rgb &optional frame)
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"Find the color in `tty-color-alist' that best approximates RGB.
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Value is a list of the form (NAME INDEX R G B).
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The argument RGB should be an rgb value, that is, a list of three
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integers in the 0..65535 range.
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FRAME defaults to the selected frame."
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(let* ((color-list (tty-color-alist frame))
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(candidate (car color-list))
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(best-distance 195076) ;; 3 * 255^2 + 15
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(r (ash (car rgb) -8))
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(g (ash (cadr rgb) -8))
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(b (ash (nth 2 rgb) -8))
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best-color)
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(while candidate
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(let ((try-rgb (cddr candidate))
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;; If the approximated color is not close enough to the
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;; gray diagonal of the RGB cube, favor non-gray colors.
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;; (The number 0.065 is an empirical ad-hoc'ery.)
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(favor-non-gray (>= (tty-color-off-gray-diag r g b) 0.065))
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try-r try-g try-b
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dif-r dif-g dif-b dist)
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;; If the RGB values of the candidate color are unknown, we
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;; never consider it for approximating another color.
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(if try-rgb
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(progn
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(setq try-r (ash (car try-rgb) -8)
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try-g (ash (cadr try-rgb) -8)
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try-b (ash (nth 2 try-rgb) -8))
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(setq dif-r (- r try-r)
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dif-g (- g try-g)
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dif-b (- b try-b))
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(setq dist (+ (* dif-r dif-r) (* dif-g dif-g) (* dif-b dif-b)))
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(if (and (< dist best-distance)
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;; The candidate color is on the gray diagonal
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;; if its RGB components are all equal.
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(or (/= try-r try-g) (/= try-g try-b)
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(not favor-non-gray)))
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(setq best-distance dist
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best-color candidate)))))
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(setq color-list (cdr color-list))
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(setq candidate (car color-list)))
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best-color))
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(defun tty-color-standard-values (color)
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"Return standard RGB values of the color COLOR.
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The result is a list of integer RGB values--(RED GREEN BLUE).
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These values range from 0 to 65535; white is (65535 65535 65535).
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The returned value reflects the standard X definition of COLOR,
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regardless of whether the terminal can display it, so the return value
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should be the same regardless of what display is being used."
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(let ((len (length color)))
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(cond ((and (>= len 4) ;; X-style "#XXYYZZ" color spec
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(eq (aref color 0) ?#)
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(member (aref color 1)
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'(?0 ?1 ?2 ?3 ?4 ?5 ?6 ?7 ?8 ?9
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?a ?b ?c ?d ?e ?f)))
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;; Translate the string "#XXYYZZ" into a list
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;; of numbers (XX YY ZZ). If the primary colors
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;; are specified with less than 4 hex digits,
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;; the used digits represent the most significant
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;; bits of the value (e.g. #XYZ = #X000Y000Z000).
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(let* ((ndig (/ (- len 1) 3))
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(i1 1)
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(i2 (+ i1 ndig))
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(i3 (+ i2 ndig)))
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(list
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(ash
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(string-to-number (substring color i1 i2) 16)
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(* 4 (- 4 ndig)))
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(ash
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(string-to-number (substring color i2 i3) 16)
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(* 4 (- 4 ndig)))
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(ash
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(string-to-number (substring color i3) 16)
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(* 4 (- 4 ndig))))))
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((and (>= len 9) ;; X-style RGB:xx/yy/zz color spec
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(string= (substring color 0 4) "rgb:"))
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;; Translate the string "RGB:XX/YY/ZZ" into a list
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;; of numbers (XX YY ZZ). If fewer than 4 hex
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;; digits are used, they represent the fraction
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;; of the maximum value (RGB:X/Y/Z = #XXXXYYYYZZZZ).
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(let* ((ndig (/ (- len 3) 3))
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(maxval (1- (ash 1 (* 4 (- ndig 1)))))
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(i1 4)
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(i2 (+ i1 ndig))
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(i3 (+ i2 ndig)))
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(list
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(/ (* (string-to-number
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(substring color i1 (- i2 1)) 16)
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255)
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maxval)
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(/ (* (string-to-number
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(substring color i2 (- i3 1)) 16)
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255)
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maxval)
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(/ (* (string-to-number
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(substring color i3) 16)
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255)
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maxval))))
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(t
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(cdr (assoc color color-name-rgb-alist))))))
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(defun tty-color-translate (color &optional frame)
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"Given a color COLOR, return the index of the corresponding TTY color.
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COLOR must be a string that is either the color's name, or its X-style
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specification like \"#RRGGBB\" or \"RGB:rr/gg/bb\", where each primary.
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color can be given with 1 to 4 hex digits.
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If COLOR is a color name that is found among supported colors in
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`tty-color-alist', the associated index is returned. Otherwise, the
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RGB values of the color, either as given by the argument or from
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looking up the name in `color-name-rgb-alist', are used to find the
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supported color that is the best approximation for COLOR in the RGB
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|
space.
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|
If COLOR is neither a valid X RGB specification of the color, nor a
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name of a color in `color-name-rgb-alist', the returned value is nil.
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If FRAME is unspecified or nil, it defaults to the selected frame."
|
|
(cadr (tty-color-desc color frame)))
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|
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(defun tty-color-by-index (idx &optional frame)
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|
"Given a numeric index of a tty color, return its description.
|
|
|
|
FRAME, if unspecified or nil, defaults to the selected frame.
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|
Value is a list of the form (NAME INDEX R G B)."
|
|
(and idx
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|
(let ((colors (tty-color-alist frame))
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|
desc found)
|
|
(while colors
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|
(setq desc (car colors))
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|
(if (eq idx (car (cdr desc)))
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|
(setq found desc))
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|
(setq colors (cdr colors)))
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|
found)))
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|
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(defun tty-color-values (color &optional frame)
|
|
"Return RGB values of the color COLOR on a termcap frame FRAME.
|
|
|
|
If COLOR is not directly supported by the display, return the RGB
|
|
values for a supported color that is its best approximation.
|
|
The value is a list of integer RGB values--(RED GREEN BLUE).
|
|
These values range from 0 to 65535; white is (65535 65535 65535).
|
|
If FRAME is omitted or nil, use the selected frame."
|
|
(cddr (tty-color-desc color frame)))
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|
|
(defun tty-color-desc (color &optional frame)
|
|
"Return the description of the color COLOR for a character terminal.
|
|
Value is a list of the form (NAME INDEX R G B). The returned NAME or
|
|
RGB value may not be the same as the argument COLOR, because the latter
|
|
might need to be approximated if it is not supported directly."
|
|
(and (stringp color)
|
|
(let ((color (tty-color-canonicalize color)))
|
|
(or (assoc color (tty-color-alist frame))
|
|
(let ((rgb (tty-color-standard-values color)))
|
|
(and rgb
|
|
(let ((pixel (tty-color-24bit rgb frame)))
|
|
(or (and pixel (cons color (cons pixel rgb)))
|
|
(tty-color-approximate rgb frame)))))))))
|
|
|
|
(defun tty-color-gray-shades (&optional display)
|
|
"Return the number of gray colors supported by DISPLAY's terminal.
|
|
A color is considered gray if the 3 components of its RGB value are equal."
|
|
(let* ((frame (if (framep display) display
|
|
;; FIXME: this uses an arbitrary frame from DISPLAY!
|
|
(car (frames-on-display-list display))))
|
|
(colors (tty-color-alist frame))
|
|
(count 0)
|
|
desc r g b)
|
|
(while colors
|
|
(setq desc (cddr (car colors))
|
|
r (car desc)
|
|
g (cadr desc)
|
|
b (car (cddr desc)))
|
|
(and (numberp r)
|
|
(eq r g) (eq g b)
|
|
(setq count (1+ count)))
|
|
(setq colors (cdr colors)))
|
|
count))
|
|
|
|
(provide 'term/tty-colors)
|
|
|
|
;;; tty-colors.el ends here
|