[bpt/emacs.git] / lisp / term / vt100.el

;;; vt100.el --- define VT100 function key sequences in function-key-map

;; Copyright (C) 1989, 1993 Free Software Foundation, Inc.

;; Author: FSF
;; Keywords: terminals

;; This file is part of GNU Emacs.

;; GNU Emacs is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation; either version 2, or (at your option)
;; any later version.

;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;; GNU General Public License for more details.

;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs; see the file COPYING.  If not, write to the
;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
;; Boston, MA 02111-1307, USA.

;;; Commentary:

;; Uses the Emacs 19 terminal initialization features --- won't work with 18.

;; Handles all VT100 clones, including the Apollo terminal.  Also handles
;; the VT200 --- its PF- and arrow- keys are different, but all those
;; are really set up by the terminal initialization code, which mines them
;; out of termcap.  This package is here to define the keypad comma, dash
;; and period (which aren't in termcap's repertoire) and the function for
;; changing from 80 to 132 columns & vv.

;;; Code:

;; Set up function-key-map entries that termcap and terminfo don't know.
(load "term/lk201" nil t)

;;; Controlling the screen width.
(defvar vt100-wide-mode (= (frame-width) 132)
  "t if vt100 is in 132-column mode.")

(defun vt100-wide-mode (&optional arg)
  "Toggle 132/80 column mode for vt100s.
With positive argument, switch to 132-column mode.
With negative argument, switch to 80-column mode."
 (interactive "P")
 (setq vt100-wide-mode
	(if (null arg) (not vt100-wide-mode)
	  (> (prefix-numeric-value arg) 0)))
 (send-string-to-terminal (if vt100-wide-mode "\e[?3h" "\e[?3l"))
 (set-frame-width terminal-frame (if vt100-wide-mode 132 80)))

;;; vt100.el ends here
Commit	Line	Data
ef61be13 ER	1	;;; vt100.el --- define VT100 function key sequences in function-key-map
ef61be13 ER	2
2fe590dc EN	3	;; Copyright (C) 1989, 1993 Free Software Foundation, Inc.
2fe590dc EN	4
ef61be13 ER	5	;; Author: FSF
	6	;; Keywords: terminals
	7
2fe590dc EN	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.
ef61be13 ER	24
	25	;;; Commentary:
	26
	27	;; Uses the Emacs 19 terminal initialization features --- won't work with 18.
	28
	29	;; Handles all VT100 clones, including the Apollo terminal. Also handles
	30	;; the VT200 --- its PF- and arrow- keys are different, but all those
	31	;; are really set up by the terminal initialization code, which mines them
	32	;; out of termcap. This package is here to define the keypad comma, dash
	33	;; and period (which aren't in termcap's repertoire) and the function for
	34	;; changing from 80 to 132 columns & vv.
	35
	36	;;; Code:
	37
0e73af29 RS	38	;; Set up function-key-map entries that termcap and terminfo don't know.
0e73af29 RS	39	(load "term/lk201" nil t)
ef61be13	40
e645a1dd	41	;;; Controlling the screen width.
e6e9c516	42	(defvar vt100-wide-mode (= (frame-width) 132)
e645a1dd JB	43	"t if vt100 is in 132-column mode.")
	44
	45	(defun vt100-wide-mode (&optional arg)
83317c07 RS	46	"Toggle 132/80 column mode for vt100s.
	47	With positive argument, switch to 132-column mode.
	48	With negative argument, switch to 80-column mode."
e645a1dd	49	(interactive "P")
db95369b	50	(setq vt100-wide-mode
e645a1dd JB	51	(if (null arg) (not vt100-wide-mode)
	52	(> (prefix-numeric-value arg) 0)))
	53	(send-string-to-terminal (if vt100-wide-mode "\e[?3h" "\e[?3l"))
83317c07	54	(set-frame-width terminal-frame (if vt100-wide-mode 132 80)))
ef61be13 ER	55
ef61be13 ER	56	;;; vt100.el ends here