annotate lisp/gpm.el @ 5582:873d7425c1ad

Change integer to fixnum in a few places where it wasn't possible mechanically. src/ChangeLog addition: 2011-10-09 Aidan Kehoe <kehoea@parhasard.net> Do a couple of non-mechanical things that would otherwise have been included in the last change. * data.c: * data.c (Ftype_of): Return Qfixnum for fixnums, not Qinteger. * lisp.h (MOST_POSITIVE_FIXNUM): Delete an obsolete comment here. man/ChangeLog addition: 2011-10-09 Aidan Kehoe <kehoea@parhasard.net> * internals/internals.texi (Top): * internals/internals.texi (Authorship of XEmacs): * internals/internals.texi (Modules for Other Aspects of the Lisp Interpreter and Object System): * internals/internals.texi (Introduction to Writing C Code): * internals/internals.texi (Working with Lisp Objects): * internals/internals.texi (Adding Global Lisp Variables): * internals/internals.texi (The XEmacs Object System (Abstractly Speaking)): * internals/internals.texi (How Lisp Objects Are Represented in C): * internals/internals.texi (Allocation of Objects in XEmacs Lisp): * internals/internals.texi (Introduction to Allocation): * internals/internals.texi (GCPROing): * internals/internals.texi (mark_object): * internals/internals.texi (sweep_bit_vectors_1): * internals/internals.texi (Fixnums and Characters): * internals/internals.texi (Future Work -- Unicode): Say fixnum rather than integer when specifically talking about fixed-width Lisp integers.
author Aidan Kehoe <kehoea@parhasard.net>
date Sun, 09 Oct 2011 10:39:09 +0100
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1 ;;; gpm.el --- Support the mouse when emacs run on a Linux console.
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2
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3 ;; Copyright (C) 1999 Free Software Foundation
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4
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5 ;; Author: William Perry <wmperry@gnu.org>
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6 ;; Keywords: mouse, terminals
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7
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8 ;; This file is part of XEmacs.
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9
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10 ;; XEmacs is free software: you can redistribute it and/or modify it
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11 ;; under the terms of the GNU General Public License as published by the
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12 ;; Free Software Foundation, either version 3 of the License, or (at your
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13 ;; option) any later version.
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15 ;; XEmacs is distributed in the hope that it will be useful, but WITHOUT
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16 ;; ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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17 ;; FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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18 ;; for more details.
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19
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20 ;; You should have received a copy of the GNU General Public License
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21 ;; along with XEmacs. If not, see <http://www.gnu.org/licenses/>.
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23 (defvar gpm-enabled-devices (make-hash-table :test 'eq
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24 :size 13
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25 :weakness 'key)
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26 "A hash table of devices with GPM currently turned on.")
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27
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28 (defun gpm-mode (&optional arg device)
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29 "Toggle GPM mouse mode.
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30 With prefix arg, turn GPM mouse mode on if and only if arg is positive."
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31 (interactive (list current-prefix-arg (selected-device)))
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32 (with-fboundp 'gpm-enable
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33 (cond
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34 ((null arg) ; Toggle
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35 (if (gethash device gpm-enabled-devices)
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36 (progn
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37 (gpm-enable device nil)
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38 (remhash device gpm-enabled-devices))
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39 (gpm-enable device t)
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40 (puthash device t gpm-enabled-devices)))
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41 ((> arg 0) ; Turn on
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42 (gpm-enable device t)
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43 (puthash device t gpm-enabled-devices))
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44 ((gethash device gpm-enabled-devices) ; Turn off
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45 (gpm-enable device nil)
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46 (remhash device gpm-enabled-devices)))))
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48 (defun turn-on-gpm-mouse-tracking (&optional device)
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49 ;; Enable mouse tracking on linux console
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50 (gpm-mode 5 device))
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51
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52 (defun turn-off-gpm-mouse-tracking (&optional device)
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53 ;; Disable mouse tracking on linux console
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54 (gpm-mode -5 device))
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55
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56 (defun gpm-is-supported-p (device)
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57 "Returns non-nil if GPM is usable right now on DEVICE in this XEmacs session.
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58 This checks whether GPM support was compiled in, TTY support was
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59 compiled in, XEmacs is running on Linux, the current console/device is
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60 TTY, and its terminal type has been set to `linux'."
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61 (and (not noninteractive) ; Don't want to do this in batch mode
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62 (fboundp 'gpm-enable) ; Must have C-level GPM support
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63 (eq system-type 'linux) ; Must be running linux
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64 (eq (device-type device) 'tty) ; on a tty
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65 (equal "linux" (declare-fboundp ; an a linux terminal type
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66 (console-tty-terminal-type (device-console device))))))
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67
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68 (defun gpm-create-device-hook (device)
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69 (if (gpm-is-supported-p device)
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70 (turn-on-gpm-mouse-tracking device)))
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71
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72 (defun gpm-delete-device-hook (device)
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73 (if (gpm-is-supported-p device)
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74 (turn-off-gpm-mouse-tracking device)))
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75
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76 ;; Restore normal mouse behavior outside Emacs
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78 (add-hook 'suspend-hook 'turn-off-gpm-mouse-tracking)
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79 (add-hook 'suspend-resume-hook 'turn-on-gpm-mouse-tracking)
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80 (add-hook 'create-device-hook 'gpm-create-device-hook)
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81 (add-hook 'delete-device-hook 'gpm-delete-device-hook)
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82
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83 (provide 'gpm)