lisp/term/rxvt.el

   1 ;;; rxvt.el --- define function key sequences and standard colors for rxvt
   2
   3 ;; Copyright (C) 2002, 2003, 2004, 2005, 2006 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 2, or (at your option)
  13 ;; 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; see the file COPYING.  If not, write to the
  22 ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  23 ;; Boston, MA 02110-1301, USA.
  24
  25 ;;; Commentary:
  26
  27 ;;; Code:
  28
  29 (defun terminal-init-rxvt ()
  30   "Terminal initialization function for rxvt."
  31   ;; The terminal intialization C code file might have initialized
  32   ;; function keys F11->F42 from the termcap/terminfo information.  On
  33   ;; a PC-style keyboard these keys correspond to
  34   ;; MODIFIER-FUNCTION_KEY, where modifier is S-, C-, C-S-.  The
  35   ;; code here subsitutes the corresponding defintions in
  36   ;; function-key-map.  This substitution is needed because if a key
  37   ;; definition if found in function-key-map, there are no further
  38   ;; lookups in other keymaps.
  39   (substitute-key-definition [f11] [S-f1] function-key-map)
  40   (substitute-key-definition [f12] [S-f2] function-key-map)
  41   (substitute-key-definition [f13] [S-f3] function-key-map)
  42   (substitute-key-definition [f14] [S-f4] function-key-map)
  43   (substitute-key-definition [f15] [S-f5] function-key-map)
  44   (substitute-key-definition [f16] [S-f6] function-key-map)
  45   (substitute-key-definition [f17] [S-f7] function-key-map)
  46   (substitute-key-definition [f18] [S-f8] function-key-map)
  47   (substitute-key-definition [f19] [S-f9] function-key-map)
  48   (substitute-key-definition [f20] [S-f10] function-key-map)
  49
  50   (substitute-key-definition [f23] [C-f1] function-key-map)
  51   (substitute-key-definition [f24] [C-f2] function-key-map)
  52   (substitute-key-definition [f25] [C-f3] function-key-map)
  53   (substitute-key-definition [f26] [C-f4] function-key-map)
  54   (substitute-key-definition [f27] [C-f5] function-key-map)
  55   (substitute-key-definition [f28] [C-f6] function-key-map)
  56   (substitute-key-definition [f29] [C-f7] function-key-map)
  57   (substitute-key-definition [f30] [C-f8] function-key-map)
  58   (substitute-key-definition [f31] [C-f9] function-key-map)
  59   (substitute-key-definition [f32] [C-f10] function-key-map)
  60
  61   (substitute-key-definition [f33] [C-S-f1] function-key-map)
  62   (substitute-key-definition [f34] [C-S-f2] function-key-map)
  63   (substitute-key-definition [f35] [C-S-f3] function-key-map)
  64   (substitute-key-definition [f36] [C-S-f4] function-key-map)
  65   (substitute-key-definition [f37] [C-S-f5] function-key-map)
  66   (substitute-key-definition [f38] [C-S-f6] function-key-map)
  67   (substitute-key-definition [f39] [C-S-f7] function-key-map)
  68   (substitute-key-definition [f40] [C-S-f8] function-key-map)
  69   (substitute-key-definition [f41] [C-S-f9] function-key-map)
  70   (substitute-key-definition [f42] [C-S-f10] function-key-map)
  71
  72   ;; Set up function-key-map entries that termcap and terminfo don't know.
  73   (let ((map (make-sparse-keymap)))
  74     (define-key map "\e[A" [up])
  75     (define-key map "\e[B" [down])
  76     (define-key map "\e[C" [right])
  77     (define-key map "\e[D" [left])
  78     (define-key map "\e[2~" [insert])
  79     (define-key map "\e[3~" [delete])
  80     (define-key map "\e[4~" [select])
  81     (define-key map "\e[5~" [prior])
  82     (define-key map "\e[6~" [next])
  83     (define-key map "\e[7~" [home])
  84     (define-key map "\e[8~" [end])
  85     (define-key map "\e[11~" [f1])
  86     (define-key map "\e[12~" [f2])
  87     (define-key map "\e[13~" [f3])
  88     (define-key map "\e[14~" [f4])
  89     (define-key map "\e[15~" [f5])
  90     (define-key map "\e[17~" [f6])
  91     (define-key map "\e[18~" [f7])
  92     (define-key map "\e[19~" [f8])
  93     (define-key map "\e[20~" [f9])
  94     (define-key map "\e[21~" [f10])
  95     ;; The strings emitted by f11 and f12 are the same as the strings
  96     ;; emitted by S-f1 and S-f2, so don't define f11 and f12.
  97     ;; (define-key map "\e[23~" [f11])
  98     ;; (define-key map "\e[24~" [f12])
  99     (define-key map "\e[29~" [print])
 100
 101     (define-key map "\e[11^" [C-f1])
 102     (define-key map "\e[12^" [C-f2])
 103     (define-key map "\e[13^" [C-f3])
 104     (define-key map "\e[14^" [C-f4])
 105     (define-key map "\e[15^" [C-f5])
 106     (define-key map "\e[17^" [C-f6])
 107     (define-key map "\e[18^" [C-f7])
 108     (define-key map "\e[19^" [C-f8])
 109     (define-key map "\e[20^" [C-f9])
 110     (define-key map "\e[21^" [C-f10])
 111
 112     (define-key map "\e[23~" [S-f1])
 113     (define-key map "\e[24~" [S-f2])
 114     (define-key map "\e[25~" [S-f3])
 115     (define-key map "\e[26~" [S-f4])
 116     (define-key map "\e[28~" [S-f5])
 117     (define-key map "\e[29~" [S-f6])
 118     (define-key map "\e[31~" [S-f7])
 119     (define-key map "\e[32~" [S-f8])
 120     (define-key map "\e[33~" [S-f9])
 121     (define-key map "\e[34~" [S-f10])
 122
 123     (define-key map "\e[23^" [C-S-f1])
 124     (define-key map "\e[24^" [C-S-f2])
 125     (define-key map "\e[25^" [C-S-f3])
 126     (define-key map "\e[26^" [C-S-f4])
 127     (define-key map "\e[28^" [C-S-f5])
 128     (define-key map "\e[29^" [C-S-f6])
 129     (define-key map "\e[31^" [C-S-f7])
 130     (define-key map "\e[32^" [C-S-f8])
 131     (define-key map "\e[33^" [C-S-f9])
 132     (define-key map "\e[34^" [C-S-f10])
 133
 134     (define-key map "\e[2^" [C-insert])
 135     (define-key map "\e[3^" [C-delete])
 136     (define-key map "\e[5^" [C-prior])
 137     (define-key map "\e[6^" [C-next])
 138     (define-key map "\e[7^" [C-home])
 139     (define-key map "\e[8^" [C-end])
 140     (define-key map "\eOd" [C-left])
 141     (define-key map "\eOc" [C-right])
 142     (define-key map "\eOa" [C-up])
 143     (define-key map "\eOb" [C-down])
 144
 145     (define-key map "\e[2;2~" [S-insert])
 146     (define-key map "\e[3$" [S-delete])
 147     (define-key map "\e[5$" [S-prior])
 148     (define-key map "\e[6$" [S-next])
 149     (define-key map "\e[7$" [S-home])
 150     (define-key map "\e[8$" [S-end])
 151     (define-key map "\e[d" [S-left])
 152     (define-key map "\e[c" [S-right])
 153     (define-key map "\e[a" [S-up])
 154     (define-key map "\e[b" [S-down])
 155
 156     ;; Use inheritance to let the main keymap override those defaults.
 157     ;; This way we don't override terminfo-derived settings or settings
 158     ;; made in the .emacs file.
 159     (set-keymap-parent map (keymap-parent function-key-map))
 160     (set-keymap-parent function-key-map map))
 161
 162   ;; Initialize colors and background mode.
 163   (rxvt-register-default-colors)
 164   (rxvt-set-background-mode)
 165   ;; This recomputes all the default faces given the colors we've just set up.
 166   (tty-set-up-initial-frame-faces))
 167
 168 ;; Set up colors, for those versions of rxvt that support it.
 169 (defvar rxvt-standard-colors
 170   ;; The names of the colors in the comments taken from the rxvt.1 man
 171   ;; page; the corresponding RGB values--from rgb.txt.
 172   '(("black"          0 (  0   0   0))  ; black
 173     ("red"            1 (205   0   0))  ; red3
 174     ("green"          2 (  0 205   0))  ; green3
 175     ("yellow"         3 (205 205   0))  ; yellow3
 176     ("blue"           4 (  0   0 205))  ; blue3
 177     ("magenta"        5 (205   0 205))  ; magenta3
 178     ("cyan"           6 (  0 205 205))  ; cyan3
 179     ("white"          7 (229 229 229))  ; gray90
 180     ("brightblack"    8 ( 77  77  77))  ; gray30
 181     ("brightred"      9 (255   0   0))  ; red
 182     ("brightgreen"   10 (  0 255   0))  ; green
 183     ("brightyellow"  11 (255 255   0))  ; yellow
 184     ("brightblue"    12 (  0   0 255))  ; blue
 185     ("brightmagenta" 13 (255   0 255))  ; magenta
 186     ("brightcyan"    14 (  0 255 255))  ; cyan
 187     ("brightwhite"   15 (255 255 255))) ; white
 188   "Names of 16 standard rxvt colors, their numbers, and RGB values.")
 189
 190 (defun rxvt-rgb-convert-to-16bit (prim)
 191   "Convert an 8-bit primary color value PRIM to a corresponding 16-bit value."
 192   (min 65535 (round (* (/ prim 255.0) 65535.0))))
 193
 194 (defun rxvt-register-default-colors ()
 195   "Register the default set of colors for rxvt or compatible emulator.
 196
 197 This function registers the number of colors returned by `display-color-cells'
 198 for the currently selected frame."
 199   (let* ((ncolors (display-color-cells))
 200          (colors rxvt-standard-colors)
 201          (color (car colors)))
 202     (if (> ncolors 0)
 203         ;; Clear the 8 default tty colors registered by startup.el
 204         (tty-color-clear))
 205     ;; Only register as many colors as are supported by the display.
 206     (while (and (> ncolors 0) colors)
 207       (tty-color-define (car color) (cadr color)
 208                         (mapcar 'rxvt-rgb-convert-to-16bit
 209                                 (car (cddr color))))
 210       (setq colors (cdr colors)
 211             color (car colors)
 212             ncolors (1- ncolors)))
 213     (when (> ncolors 0)
 214       (cond
 215        ((= ncolors 240)                 ; 256-color rxvt
 216         ;; 216 non-gray colors first
 217         (let ((r 0) (g 0) (b 0))
 218           (while (> ncolors 24)
 219             ;; This and other formulae taken from 256colres.pl and
 220             ;; 88colres.pl in the xterm distribution.
 221             (tty-color-define (format "color-%d" (- 256 ncolors))
 222                               (- 256 ncolors)
 223                               (mapcar 'rxvt-rgb-convert-to-16bit
 224                                       (list (round (* r 42.5))
 225                                             (round (* g 42.5))
 226                                             (round (* b 42.5)))))
 227             (setq b (1+ b))
 228             (if (> b 5)
 229                 (setq g (1+ g)
 230                       b 0))
 231             (if (> g 5)
 232                 (setq r (1+ r)
 233                       g 0))
 234             (setq ncolors (1- ncolors))))
 235         ;; Now the 24 gray colors
 236         (while (> ncolors 0)
 237           (setq color (rxvt-rgb-convert-to-16bit (+ 8 (* (- 24 ncolors) 10))))
 238           (tty-color-define (format "color-%d" (- 256 ncolors))
 239                             (- 256 ncolors)
 240                             (list color color color))
 241           (setq ncolors (1- ncolors))))
 242
 243        ((= ncolors 72) ; rxvt-unicode
 244         ;; 64 non-gray colors
 245         (let ((levels '(0 139 205 255))
 246               (r 0) (g 0) (b 0))
 247           (while (> ncolors 8)
 248             (tty-color-define (format "color-%d" (- 88 ncolors))
 249                               (- 88 ncolors)
 250                               (mapcar 'rxvt-rgb-convert-to-16bit
 251                                       (list (nth r levels)
 252                                             (nth g levels)
 253                                             (nth b levels))))
 254             (setq b (1+ b))
 255             (if (> b 3)
 256                 (setq g (1+ g)
 257                       b 0))
 258             (if (> g 3)
 259                 (setq r (1+ r)
 260                       g 0))
 261             (setq ncolors (1- ncolors))))
 262         ;; Now the 8 gray colors
 263         (while (> ncolors 0)
 264           (setq color (rxvt-rgb-convert-to-16bit
 265                        (floor
 266                         (if (= ncolors 8)
 267                             46.36363636
 268                           (+ (* (- 8 ncolors) 23.18181818) 69.54545454)))))
 269           (tty-color-define (format "color-%d" (- 88 ncolors))
 270                             (- 88 ncolors)
 271                             (list color color color))
 272           (setq ncolors (1- ncolors))))
 273        (t (error "Unsupported number of rxvt colors (%d)" (+ 16 ncolors)))))
 274     ;; Modifying color mappings means realized faces don't use the
 275     ;; right colors, so clear them.
 276     (clear-face-cache)))
 277
 278 ;; rxvt puts the default colors into an environment variable
 279 ;; COLORFGBG.  We use this to set the background mode in a more
 280 ;; intelligent way than the default guesswork in startup.el.
 281 (defun rxvt-set-background-mode ()
 282   "Set background mode as appropriate for the default rxvt colors."
 283   (let ((fgbg (getenv "COLORFGBG"))
 284         bg rgb)
 285     (setq default-frame-background-mode 'light)
 286     (when (and fgbg
 287                (string-match ".*;\\([0-9][0-9]?\\)\\'" fgbg))
 288       (setq bg (string-to-number (substring fgbg (match-beginning 1))))
 289       ;; The next line assumes that rxvt-standard-colors are ordered
 290       ;; by the color index in the ascending order!
 291       (setq rgb (car (cddr (nth bg rxvt-standard-colors))))
 292       ;; See the commentary in frame-set-background-mode about the
 293       ;; computation below.
 294       (if (< (apply '+ rgb)
 295              ;; The following line assumes that white is the 15th
 296              ;; color in rxvt-standard-colors.
 297              (* (apply '+ (car (cddr (nth 15 rxvt-standard-colors)))) 0.6))
 298           (setq default-frame-background-mode 'dark)))
 299     (frame-set-background-mode (selected-frame))))
 300
 301 ;; arch-tag: 20cf2fb6-6318-4bab-9dbf-1d15048f2257
 302 ;;; rxvt.el ends here