mirror of
https://git.savannah.gnu.org/git/emacs.git
synced 2024-11-30 08:09:04 +00:00
108 lines
3.3 KiB
EmacsLisp
108 lines
3.3 KiB
EmacsLisp
;;; vt-control.el --- Common VTxxx control functions
|
|
|
|
;; Copyright (C) 1993, 1994 Free Software Foundation, Inc.
|
|
|
|
;; Author: Rob Riepel <riepel@networking.stanford.edu>
|
|
;; Maintainer: Rob Riepel <riepel@networking.stanford.edu>
|
|
;; 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:
|
|
|
|
;; The functions contained in this file send various VT control codes
|
|
;; to the terminal where emacs is running. The following functions are
|
|
;; available.
|
|
|
|
;; Function Action
|
|
|
|
;; vt-wide set wide screen (132 characters)
|
|
;; vt-narrow set narrow screen (80 characters)
|
|
;; vt-toggle-screen toggle wide/narrow screen
|
|
;; vt-keypad-on set applications keypad on
|
|
;; vt-keypad-off set applications keypad off
|
|
;; vt-numlock toggle applications keypad on/off
|
|
|
|
;;; Usage:
|
|
|
|
;; To use enable these functions, simply load this file.
|
|
|
|
;; Note: vt-control makes no effort to determine how the terminal is
|
|
;; initially set. It assumes the terminal starts with a width
|
|
;; of 80 characters and the applications keypad enabled. Nor
|
|
;; does vt-control try to restore the terminal when emacs is
|
|
;; killed or suspended.
|
|
|
|
;;; Code:
|
|
|
|
|
|
;;; Global variables
|
|
|
|
(defvar vt-applications-keypad-p t
|
|
"If non-nil, keypad is in applications mode.")
|
|
|
|
(defvar vt-wide-p nil
|
|
"If non-nil, the screen is 132 characters wide.")
|
|
|
|
|
|
;;; Screen width functions.
|
|
|
|
(defun vt-wide nil
|
|
"Set the screen 132 characters wide."
|
|
(interactive)
|
|
(send-string-to-terminal "\e[?3h")
|
|
(set-screen-width 132)
|
|
(setq vt-wide-p t))
|
|
|
|
(defun vt-narrow nil
|
|
"Set the screen 80 characters wide."
|
|
(interactive)
|
|
(send-string-to-terminal "\e[?3l")
|
|
(set-screen-width 80)
|
|
(setq vt-wide-p nil))
|
|
|
|
(defun vt-toggle-screen nil
|
|
"Toggle between 80 and 132 character screen width."
|
|
(interactive)
|
|
(if vt-wide-p (vt-narrow) (vt-wide)))
|
|
|
|
|
|
;;; Applications keypad functions.
|
|
|
|
(defun vt-keypad-on (&optional tell)
|
|
"Turn on the VT applications keypad."
|
|
(interactive)
|
|
(send-string-to-terminal "\e=")
|
|
(setq vt-applications-keypad-p t)
|
|
(if (or tell (interactive-p)) (message "Applications keypad enabled.")))
|
|
|
|
(defun vt-keypad-off (&optional tell)
|
|
"Turn off the VT applications keypad."
|
|
(interactive "p")
|
|
(send-string-to-terminal "\e>")
|
|
(setq vt-applications-keypad-p nil)
|
|
(if (or tell (interactive-p)) (message "Applications keypad disabled.")))
|
|
|
|
(defun vt-numlock nil
|
|
"Toggle VT application keypad on and off."
|
|
(interactive)
|
|
(if vt-applications-keypad-p (vt-keypad-off (interactive-p))
|
|
(vt-keypad-on (interactive-p))))
|
|
|
|
;;; vt-control.el ends here
|