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+ − 1 ;;; gpm.el --- Support the mouse when emacs run on a Linux console.
+ − 2
+ − 3 ;; Copyright (C) 1999 Free Software Foundation
+ − 4
+ − 5 ;; Author: William Perry <wmperry@gnu.org>
+ − 6 ;; Keywords: mouse, terminals
+ − 7
+ − 8 ;; This file is part of XEmacs.
+ − 9
+ − 10 ;; XEmacs 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 ;; XEmacs 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
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+ − 21 ;; along with XEmacs; see the file COPYING. If not, write to the
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+ − 22 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ − 23 ;; Boston, MA 02111-1307, USA.
+ − 24
+ − 25 (defvar gpm-enabled-devices (make-hash-table :test 'eq
+ − 26 :size 13
+ − 27 :weakness 'key)
+ − 28 "A hash table of devices with GPM currently turned on.")
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+ − 29
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+ − 30 (defun gpm-mode (&optional arg device)
+ − 31 "Toggle GPM mouse mode.
+ − 32 With prefix arg, turn GPM mouse mode on if and only if arg is positive."
+ − 33 (interactive (list current-prefix-arg (selected-device)))
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+ − 34 (with-fboundp 'gpm-enable
+ − 35 (cond
+ − 36 ((null arg) ; Toggle
+ − 37 (if (gethash device gpm-enabled-devices)
+ − 38 (progn
+ − 39 (gpm-enable device nil)
+ − 40 (remhash device gpm-enabled-devices))
+ − 41 (gpm-enable device t)
+ − 42 (puthash device t gpm-enabled-devices)))
+ − 43 ((> arg 0) ; Turn on
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+ − 44 (gpm-enable device t)
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+ − 45 (puthash device t gpm-enabled-devices))
+ − 46 ((gethash device gpm-enabled-devices) ; Turn off
+ − 47 (gpm-enable device nil)
+ − 48 (remhash device gpm-enabled-devices)))))
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+ − 49
+ − 50 (defun turn-on-gpm-mouse-tracking (&optional device)
+ − 51 ;; Enable mouse tracking on linux console
+ − 52 (gpm-mode 5 device))
+ − 53
+ − 54 (defun turn-off-gpm-mouse-tracking (&optional device)
+ − 55 ;; Disable mouse tracking on linux console
+ − 56 (gpm-mode -5 device))
+ − 57
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+ − 58 (defun gpm-is-supported-p (device)
+ − 59 "Returns non-nil if GPM is usable right now on DEVICE in this XEmacs session.
+ − 60 This checks whether GPM support was compiled in, TTY support was
+ − 61 compiled in, XEmacs is running on Linux, the current console/device is
+ − 62 TTY, and its terminal type has been set to `linux'."
+ − 63 (and (not noninteractive) ; Don't want to do this in batch mode
+ − 64 (fboundp 'gpm-enable) ; Must have C-level GPM support
+ − 65 (eq system-type 'linux) ; Must be running linux
+ − 66 (eq (device-type device) 'tty) ; on a tty
+ − 67 (equal "linux" (declare-fboundp ; an a linux terminal type
+ − 68 (console-tty-terminal-type (device-console device))))))
+ − 69
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+ − 70 (defun gpm-create-device-hook (device)
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+ − 71 (if (gpm-is-supported-p device)
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+ − 72 (turn-on-gpm-mouse-tracking device)))
+ − 73
+ − 74 (defun gpm-delete-device-hook (device)
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+ − 75 (if (gpm-is-supported-p device)
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+ − 76 (turn-off-gpm-mouse-tracking device)))
+ − 77
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+ − 78 ;; Restore normal mouse behavior outside Emacs
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+ − 79
+ − 80 (add-hook 'suspend-hook 'turn-off-gpm-mouse-tracking)
+ − 81 (add-hook 'suspend-resume-hook 'turn-on-gpm-mouse-tracking)
+ − 82 (add-hook 'create-device-hook 'gpm-create-device-hook)
+ − 83 (add-hook 'delete-device-hook 'gpm-delete-device-hook)
+ − 84
+ − 85 (provide 'gpm)