lisp/term/rxvt.el

   1 ;;; rxvt.el --- define function key sequences and standard colors for rxvt
   2
   3 ;; Copyright (C) 2002 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., 59 Temple Place - Suite 330,
  23 ;; Boston, MA 02111-1307, USA.
  24
  25 ;;; Commentary:
  26
  27 ;;; Code:
  28
  29 (eval-when-compile (require 'server))
  30
  31 ;; Set up function-key-map entries that termcap and terminfo don't know.
  32 (let ((map (make-sparse-keymap)))
  33   (define-key map "\e[A" [up])
  34   (define-key map "\e[B" [down])
  35   (define-key map "\e[C" [right])
  36   (define-key map "\e[D" [left])
  37   (define-key map "\e[7~" [home])
  38   (define-key map "\e[2~" [insert])
  39   (define-key map "\e[3~" [delete])
  40   (define-key map "\e[4~" [select])
  41   (define-key map "\e[5~" [prior])
  42   (define-key map "\e[6~" [next])
  43   (define-key map "\e[11~" [f1])
  44   (define-key map "\e[12~" [f2])
  45   (define-key map "\e[13~" [f3])
  46   (define-key map "\e[14~" [f4])
  47   (define-key map "\e[15~" [f5])
  48   (define-key map "\e[17~" [f6])
  49   (define-key map "\e[18~" [f7])
  50   (define-key map "\e[19~" [f8])
  51   (define-key map "\e[20~" [f9])
  52   (define-key map "\e[21~" [f10])
  53   (define-key map "\e[23~" [f11])
  54   (define-key map "\e[24~" [f12])
  55   (define-key map "\e[29~" [print])
  56
  57   (define-key map "\e[11^" [C-f1])
  58   (define-key map "\e[12^" [C-f2])
  59   (define-key map "\e[13^" [C-f3])
  60   (define-key map "\e[14^" [C-f4])
  61   (define-key map "\e[15^" [C-f5])
  62   (define-key map "\e[17^" [C-f6])
  63   (define-key map "\e[18^" [C-f7])
  64   (define-key map "\e[19^" [C-f8])
  65   (define-key map "\e[20^" [C-f9])
  66   (define-key map "\e[21^" [C-f10])
  67   (define-key map "\e[23^" [C-f11])
  68   (define-key map "\e[24^" [C-f12])
  69
  70   (define-key map "\e[29~" [print])
  71
  72   (define-key map "\e[2;2~" [S-insert])
  73   (define-key map "\e[3$" [S-delete])
  74
  75   (define-key map "\e[2^" [C-insert])
  76   (define-key map "\e[3^" [C-delete])
  77   (define-key map "\e[5^" [C-prior])
  78   (define-key map "\e[6^" [C-next])
  79   (define-key map "\eOd" [C-left])
  80   (define-key map "\eOc" [C-right])
  81   (define-key map "\eOa" [C-up])
  82   (define-key map "\eOb" [C-down])
  83
  84   (define-key map "\e[5$" [S-prior])
  85   (define-key map "\e[6$" [S-next])
  86   (define-key map "\e[8$" [S-end])
  87   (define-key map "\e[7$" [S-home])
  88   (define-key map "\e[d" [S-left])
  89   (define-key map "\e[c" [S-right])
  90   (define-key map "\e[a" [S-up])
  91   (define-key map "\e[b" [S-down])
  92
  93   ;; Use inheritance to let the main keymap override those defaults.
  94   ;; This way we don't override terminfo-derived settings or settings
  95   ;; made in the .emacs file.
  96   (set-keymap-parent map (keymap-parent function-key-map))
  97   (set-keymap-parent function-key-map map))
  98
  99 ;; Set up colors, for those versions of rxvt that support it.
 100 (defvar rxvt-standard-colors
 101   ;; The names of the colors in the comments taken from the rxvt.1 man
 102   ;; page; the corresponding RGB values--from rgb.txt.
 103   '(("black"          0 (  0   0   0))  ; black
 104     ("red"            1 (205   0   0))  ; red3
 105     ("green"          2 (  0 205   0))  ; green3
 106     ("yellow"         3 (205 205   0))  ; yellow3
 107     ("blue"           4 (  0   0 205))  ; blue3
 108     ("magenta"        5 (205   0 205))  ; magenta3
 109     ("cyan"           6 (  0 205 205))  ; cyan3
 110     ("white"          7 (250 235 215))  ; AntiqueWhite
 111     ("brightblack"    8 ( 64  64  64))  ; gray25
 112     ("brightred"      9 (255   0   0))  ; red
 113     ("brightgreen"   10 (  0 255   0))  ; green
 114     ("brightyellow"  11 (255 255   0))  ; yellow
 115     ("brightblue"    12 (  0   0 255))  ; blue
 116     ("brightmagenta" 13 (255   0 255))  ; magenta
 117     ("brightcyan"    14 (  0 255 255))  ; cyan
 118     ("brightwhite"   15 (255 255 255))) ; white
 119   "Names of 16 standard rxvt colors, their numbers, and RGB values.")
 120
 121 (defun rxvt-rgb-convert-to-16bit (prim)
 122   "Convert an 8-bit primary color value PRIM to a corresponding 16-bit value."
 123   (min 65535 (round (* (/ prim 255.0) 65535.0))))
 124
 125 (defun rxvt-register-default-colors ()
 126   "Register the default set of colors for rxvt or compatible emulator.
 127
 128 This function registers the number of colors returned by `display-color-cells'
 129 for the currently selected frame."
 130   (let* ((ncolors (display-color-cells))
 131          (colors rxvt-standard-colors)
 132          (color (car colors)))
 133     (if (> ncolors 0)
 134         ;; Clear the 8 default tty colors registered by startup.el
 135         (tty-color-clear))
 136     ;; Only register as many colors as are supported by the display.
 137     (while (and (> ncolors 0) colors)
 138       (tty-color-define (car color) (cadr color)
 139                         (mapcar 'rxvt-rgb-convert-to-16bit
 140                                 (car (cddr color))))
 141       (setq colors (cdr colors)
 142             color (car colors)
 143             ncolors (1- ncolors)))
 144     ;; Modifying color mappings means realized faces don't use the
 145     ;; right colors, so clear them.
 146     (clear-face-cache)))
 147
 148 ;; rxvt puts the default colors into an environment variable
 149 ;; COLORFGBG.  We use this to set the background mode in a more
 150 ;; intelligent way than the default guesswork in startup.el.
 151 (defun rxvt-set-background-mode ()
 152   "Set background mode as appropriate for the default rxvt colors."
 153   (let ((fgbg (server-getenv "COLORFGBG"))
 154         bg rgb)
 155     (setq frame-background-mode 'light) ; default
 156     (when (and fgbg
 157                (string-match ".*;\\([0-9][0-9]?\\)\\'" fgbg))
 158       (setq bg (string-to-number (substring fgbg (match-beginning 1))))
 159       ;; The next line assumes that rxvt-standard-colors are ordered
 160       ;; by the color index in the ascending order!
 161       (setq rgb (car (cddr (nth bg rxvt-standard-colors))))
 162       ;; See the commentary in frame-set-background-mode about the
 163       ;; computation below.
 164       (if (< (apply '+ rgb)
 165              ;; The following line assumes that white is the 15th
 166              ;; color in rxvt-standard-colors.
 167              (* (apply '+ (car (cddr (nth 15 rxvt-standard-colors)))) 0.6))
 168           (setq frame-background-mode 'dark)))
 169     (frame-set-background-mode (selected-frame))))
 170
 171 ;; Do it!
 172 (rxvt-register-default-colors)
 173 (rxvt-set-background-mode)
 174 ;; This recomputes all the default faces given the colors we've just set up.
 175 (tty-set-up-initial-frame-faces)
 176
 177 ;;; arch-tag: 20cf2fb6-6318-4bab-9dbf-1d15048f2257
 178 ;;; rxvt.el ends here