lisp/term/rxvt.el

   1 ;;; rxvt.el --- define function key sequences and standard colors for rxvt
   2
   3 ;; Copyright (C) 2002-2016 Free Software Foundation, Inc.
   4
   5 ;; Author: Eli Zaretskii
   6 ;; Keywords: terminals
   7
   8 ;; This file is part of GNU Emacs.
   9
  10 ;; GNU Emacs is free software: you can redistribute it and/or modify
  11 ;; it under the terms of the GNU General Public License as published by
  12 ;; the Free Software Foundation, either version 3 of the License, or
  13 ;; (at your option) any later version.
  14
  15 ;; GNU Emacs is distributed in the hope that it will be useful,
  16 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 ;; GNU General Public License for more details.
  19
  20 ;; You should have received a copy of the GNU General Public License
  21 ;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
  22
  23 ;;; Commentary:
  24
  25 ;;; Code:
  26
  27 (require 'term/xterm)
  28
  29 (defvar rxvt-function-map
  30   (let ((map (make-sparse-keymap)))
  31     (set-keymap-parent map xterm-rxvt-function-map)
  32
  33     ;; Set up input-decode-map entries that termcap and terminfo don't know.
  34     (define-key map "\e[7~" [home])
  35     (define-key map "\e[8~" [end])
  36     ;; The strings emitted by f11 and f12 are the same as the strings
  37     ;; emitted by S-f1 and S-f2, so don't define f11 and f12.
  38     ;; (define-key rxvt-function-map "\e[23~" [f11])
  39     ;; (define-key rxvt-function-map "\e[24~" [f12])
  40     (define-key map "\e[23~" [S-f1])
  41     (define-key map "\e[24~" [S-f2])
  42
  43     (define-key map "\e[11^" [C-f1])
  44     (define-key map "\e[12^" [C-f2])
  45     (define-key map "\e[13^" [C-f3])
  46     (define-key map "\e[14^" [C-f4])
  47     (define-key map "\e[15^" [C-f5])
  48     (define-key map "\e[17^" [C-f6])
  49     (define-key map "\e[18^" [C-f7])
  50     (define-key map "\e[19^" [C-f8])
  51     (define-key map "\e[20^" [C-f9])
  52     (define-key map "\e[21^" [C-f10])
  53
  54     (define-key map "\e[25~" [S-f3])
  55     (define-key map "\e[26~" [S-f4])
  56     (define-key map "\e[28~" [S-f5])
  57     (define-key map "\e[29~" [S-f6])
  58     (define-key map "\e[31~" [S-f7])
  59     (define-key map "\e[32~" [S-f8])
  60     (define-key map "\e[33~" [S-f9])
  61     (define-key map "\e[34~" [S-f10])
  62
  63     (define-key map "\e[23^" [C-S-f1])
  64     (define-key map "\e[24^" [C-S-f2])
  65     (define-key map "\e[25^" [C-S-f3])
  66     (define-key map "\e[26^" [C-S-f4])
  67     (define-key map "\e[28^" [C-S-f5])
  68     (define-key map "\e[29^" [C-S-f6])
  69     (define-key map "\e[31^" [C-S-f7])
  70     (define-key map "\e[32^" [C-S-f8])
  71     (define-key map "\e[33^" [C-S-f9])
  72     (define-key map "\e[34^" [C-S-f10])
  73
  74     (define-key map "\e[2^" [C-insert])
  75     (define-key map "\e[3^" [C-delete])
  76     (define-key map "\e[5^" [C-prior])
  77     (define-key map "\e[6^" [C-next])
  78     (define-key map "\e[7^" [C-home])
  79     (define-key map "\e[8^" [C-end])
  80     (define-key map "\eOd" [C-left])
  81     (define-key map "\eOc" [C-right])
  82     (define-key map "\eOa" [C-up])
  83     (define-key map "\eOb" [C-down])
  84
  85     (define-key map "\e[3$" [S-delete])
  86     (define-key map "\e[5$" [S-prior])
  87     (define-key map "\e[6$" [S-next])
  88     (define-key map "\e[7$" [S-home])
  89     (define-key map "\e[8$" [S-end])
  90     (define-key map "\e[d" [S-left])
  91     (define-key map "\e[c" [S-right])
  92     (define-key map "\e[a" [S-up])
  93     (define-key map "\e[b" [S-down])
  94     map)
  95   "Function key overrides for rxvt.")
  96
  97 (defvar rxvt-alternatives-map
  98   (let ((map (make-sparse-keymap)))
  99     ;; The terminal initialization C code file might have initialized
 100     ;; function keys F11->F42 from the termcap/terminfo information.  On
 101     ;; a PC-style keyboard these keys correspond to
 102     ;; MODIFIER-FUNCTION_KEY, where modifier is S-, C-, C-S-.  The
 103     ;; code here substitutes the corresponding definitions in
 104     ;; function-key-map.  This substitution is needed because if a key
 105     ;; definition if found in function-key-map, there are no further
 106     ;; lookups in other keymaps.
 107     (define-key map [f11] [S-f1])
 108     (define-key map [f12] [S-f2])
 109     (define-key map [f13] [S-f3])
 110     (define-key map [f14] [S-f4])
 111     (define-key map [f15] [S-f5])
 112     (define-key map [f16] [S-f6])
 113     (define-key map [f17] [S-f7])
 114     (define-key map [f18] [S-f8])
 115     (define-key map [f19] [S-f9])
 116     (define-key map [f20] [S-f10])
 117
 118     (define-key map [f23] [C-f1])
 119     (define-key map [f24] [C-f2])
 120     (define-key map [f25] [C-f3])
 121     (define-key map [f26] [C-f4])
 122     (define-key map [f27] [C-f5])
 123     (define-key map [f28] [C-f6])
 124     (define-key map [f29] [C-f7])
 125     (define-key map [f30] [C-f8])
 126     (define-key map [f31] [C-f9])
 127     (define-key map [f32] [C-f10])
 128
 129     (define-key map [f33] [C-S-f1])
 130     (define-key map [f34] [C-S-f2])
 131     (define-key map [f35] [C-S-f3])
 132     (define-key map [f36] [C-S-f4])
 133     (define-key map [f37] [C-S-f5])
 134     (define-key map [f38] [C-S-f6])
 135     (define-key map [f39] [C-S-f7])
 136     (define-key map [f40] [C-S-f8])
 137     (define-key map [f41] [C-S-f9])
 138     (define-key map [f42] [C-S-f10])
 139     map)
 140   "Keymap of possible alternative meanings for some keys.")
 141
 142 ;; Set up colors, for those versions of rxvt that support it.
 143 (defvar rxvt-standard-colors
 144   ;; The names of the colors in the comments taken from the rxvt.1 man
 145   ;; page; the corresponding RGB values--from rgb.txt.
 146   '(("black"          0 (  0   0   0))  ; black
 147     ("red"            1 (205   0   0))  ; red3
 148     ("green"          2 (  0 205   0))  ; green3
 149     ("yellow"         3 (205 205   0))  ; yellow3
 150     ("blue"           4 (  0   0 205))  ; blue3
 151     ("magenta"        5 (205   0 205))  ; magenta3
 152     ("cyan"           6 (  0 205 205))  ; cyan3
 153     ("white"          7 (229 229 229))  ; gray90
 154     ("brightblack"    8 ( 77  77  77))  ; gray30
 155     ("brightred"      9 (255   0   0))  ; red
 156     ("brightgreen"   10 (  0 255   0))  ; green
 157     ("brightyellow"  11 (255 255   0))  ; yellow
 158     ("brightblue"    12 (  0   0 255))  ; blue
 159     ("brightmagenta" 13 (255   0 255))  ; magenta
 160     ("brightcyan"    14 (  0 255 255))  ; cyan
 161     ("brightwhite"   15 (255 255 255))) ; white
 162   "Names of 16 standard rxvt colors, their numbers, and RGB values.")
 163
 164 (defun terminal-init-rxvt ()
 165   "Terminal initialization function for rxvt."
 166
 167   (xterm--push-map rxvt-alternatives-map local-function-key-map)
 168   (xterm--push-map rxvt-function-map input-decode-map)
 169
 170   ;; Initialize colors and background mode.
 171   (xterm-register-default-colors rxvt-standard-colors)
 172   (rxvt-set-background-mode)
 173   ;; This recomputes all the default faces given the colors we've just set up.
 174   (tty-set-up-initial-frame-faces))
 175
 176 ;; rxvt puts the default colors into an environment variable
 177 ;; COLORFGBG.  We use this to set the background mode in a more
 178 ;; intelligent way than the default guesswork in startup.el.
 179 (defun rxvt-set-background-mode ()
 180   "Set background mode as appropriate for the default rxvt colors."
 181   (let ((fgbg (getenv "COLORFGBG"))
 182         bg rgb)
 183     (set-terminal-parameter nil 'background-mode 'light)
 184     (when (and fgbg
 185                (string-match ".*;\\([0-9][0-9]?\\)\\'" fgbg))
 186       (setq bg (string-to-number (substring fgbg (match-beginning 1))))
 187       ;; The next line assumes that rxvt-standard-colors are ordered
 188       ;; by the color index in the ascending order!
 189       (setq rgb (car (cddr (nth bg rxvt-standard-colors))))
 190       ;; See the commentary in frame-set-background-mode about the
 191       ;; computation below.
 192       (if (< (apply '+ rgb)
 193              ;; The following line assumes that white is the 15th
 194              ;; color in rxvt-standard-colors.
 195              (* (apply '+ (car (cddr (nth 15 rxvt-standard-colors)))) 0.6))
 196           (set-terminal-parameter nil 'background-mode 'dark)))))
 197
 198 ;;; rxvt.el ends here