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- ;;; device.el --- miscellaneous device functions not written in C
-
- ;;;; Copyright (C) 1994, 1995 Board of Trustees, University of Illinois
- ;;;; Copyright (C) 1995, 1996 Ben Wing
-
- ;; Keywords: internal
-
- ;; This file is part of XEmacs.
-
- ;; XEmacs 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.
-
- ;; XEmacs 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 XEmacs; see the file COPYING. If not, write to the
- ;; Free Software Foundation, 59 Temple Place - Suite 330,
- ;; Boston, MA 02111-1307, USA.
-
- ;;; Synched up with: Not in FSF.
-
- (defun device-list ()
- "Return a list of all devices."
- (apply 'nconc (mapcar 'console-device-list (console-list))))
-
- (defun device-type (&optional device)
- "Return the type of the specified device (e.g. `x' or `tty').
- This is equivalent to the type of the device's console.
- Value is `tty' for a tty device (a character-only terminal),
- `x' for a device that is a screen on an X display,
- `ns' for a device that is a NeXTstep connection (not yet implemented),
- `win32' for a device that is a Windows or Windows NT connection (not yet
- implemented),
- `pc' for a device that is a direct-write MS-DOS screen (not yet implemented),
- `stream' for a stream device (which acts like a stdio stream), and
- `dead' for a deleted device."
- (or device (setq device (selected-device)))
- (if (not (device-live-p device)) 'dead
- (console-type (device-console device))))
-
- (defun make-tty-device (&optional tty terminal-type controlling-process)
- "Create a new device on TTY.
- TTY should be the name of a tty device file (e.g. \"/dev/ttyp3\" under
- SunOS et al.), as returned by the `tty' command. A value of nil means
- use the stdin and stdout as passed to XEmacs from the shell.
- If TERMINAL-TYPE is non-nil, it should be a string specifying the
- type of the terminal attached to the specified tty. If it is nil,
- the terminal type will be inferred from the TERM environment variable.
- If CONTROLLING-PROCESS is non-nil, it should be an integer
- specifying the process id of the process in control of the specified tty. If
- it is nil, it is assumes to be the value returned by emacs-pid."
- (make-device 'tty tty (list 'terminal-type terminal-type
- 'controlling-process controlling-process)))
-
- (defun make-x-device (&optional display)
- "Create a new device connected to DISPLAY."
- (make-device 'x display))
-
- (defun device-on-window-system-p (&optional device)
- "Return non-nil if DEVICE is on a window system.
- This generally means that there is support for the mouse, the menubar,
- the toolbar, glyphs, etc."
- (or device (setq device (selected-device)))
- (console-on-window-system-p (device-console device)))
-
- (defalias 'valid-device-type-p 'valid-console-type-p)
- (defalias 'device-type-list 'console-type-list)
- (defalias 'device-pixel-depth 'device-bitplanes)
-
- ;;; device.el ends here
-