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1138 lines
43 KiB
EmacsLisp
1138 lines
43 KiB
EmacsLisp
;;; frame.el --- multi-frame management independent of window systems.
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;; Copyright (C) 1993, 1994, 1996, 1997, 2000 Free Software Foundation, Inc.
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;; Maintainer: FSF
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;; Keywords: internal
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software; you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation; either version 2, or (at your option)
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;; any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs; see the file COPYING. If not, write to the
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;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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;; Boston, MA 02111-1307, USA.
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;;; Code:
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(defvar frame-creation-function nil
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"Window-system dependent function to call to create a new frame.
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The window system startup file should set this to its frame creation
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function, which should take an alist of parameters as its argument.")
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;;; The initial value given here for used to ask for a minibuffer.
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;;; But that's not necessary, because the default is to have one.
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;;; By not specifying it here, we let an X resource specify it.
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(defcustom initial-frame-alist nil
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"*Alist of frame parameters for creating the initial X window frame.
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You can set this in your `.emacs' file; for example,
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(setq initial-frame-alist '((top . 1) (left . 1) (width . 80) (height . 55)))
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Parameters specified here supersede the values given in `default-frame-alist'.
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If the value calls for a frame without a minibuffer, and you have not created
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a minibuffer frame on your own, one is created according to
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`minibuffer-frame-alist'.
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You can specify geometry-related options for just the initial frame
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by setting this variable in your `.emacs' file; however, they won't
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take effect until Emacs reads `.emacs', which happens after first creating
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the frame. If you want the frame to have the proper geometry as soon
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as it appears, you need to use this three-step process:
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* Specify X resources to give the geometry you want.
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* Set `default-frame-alist' to override these options so that they
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don't affect subsequent frames.
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* Set `initial-frame-alist' in a way that matches the X resources,
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to override what you put in `default-frame-alist'."
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:type '(repeat (cons :format "%v"
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(symbol :tag "Parameter")
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(sexp :tag "Value")))
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:group 'frames)
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(defcustom minibuffer-frame-alist '((width . 80) (height . 2))
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"*Alist of frame parameters for initially creating a minibuffer frame.
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You can set this in your `.emacs' file; for example,
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(setq minibuffer-frame-alist
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'((top . 1) (left . 1) (width . 80) (height . 2)))
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Parameters specified here supersede the values given in
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`default-frame-alist', for a minibuffer frame."
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:type '(repeat (cons :format "%v"
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(symbol :tag "Parameter")
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(sexp :tag "Value")))
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:group 'frames)
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(defcustom pop-up-frame-alist nil
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"*Alist of frame parameters used when creating pop-up frames.
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Pop-up frames are used for completions, help, and the like.
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This variable can be set in your init file, like this:
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(setq pop-up-frame-alist '((width . 80) (height . 20)))
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These supersede the values given in `default-frame-alist',
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for pop-up frames."
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:type '(repeat (cons :format "%v"
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(symbol :tag "Parameter")
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(sexp :tag "Value")))
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:group 'frames)
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(setq pop-up-frame-function
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(function (lambda ()
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(make-frame pop-up-frame-alist))))
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(defcustom special-display-frame-alist
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'((height . 14) (width . 80) (unsplittable . t))
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"*Alist of frame parameters used when creating special frames.
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Special frames are used for buffers whose names are in
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`special-display-buffer-names' and for buffers whose names match
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one of the regular expressions in `special-display-regexps'.
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This variable can be set in your init file, like this:
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(setq special-display-frame-alist '((width . 80) (height . 20)))
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These supersede the values given in `default-frame-alist'."
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:type '(repeat (cons :format "%v"
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(symbol :tag "Parameter")
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(sexp :tag "Value")))
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:group 'frames)
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(defun special-display-popup-frame (buffer &optional args)
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"Display BUFFER in its own frame, reusing an existing window if any.
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Return the window chosen.
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Currently we do not insist on selecting the window within its frame.
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If ARGS is an alist, use it as a list of frame parameter specs.
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If ARGS is a list whose car is a symbol,
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use (car ARGS) as a function to do the work.
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Pass it BUFFER as first arg, and (cdr ARGS) gives the rest of the args."
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(if (and args (symbolp (car args)))
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(apply (car args) buffer (cdr args))
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(let ((window (get-buffer-window buffer t)))
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(if window
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;; If we have a window already, make it visible.
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(let ((frame (window-frame window)))
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(make-frame-visible frame)
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(raise-frame frame)
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window)
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;; If no window yet, make one in a new frame.
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(let ((frame (make-frame (append args special-display-frame-alist))))
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(set-window-buffer (frame-selected-window frame) buffer)
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(set-window-dedicated-p (frame-selected-window frame) t)
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(frame-selected-window frame))))))
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(defun handle-delete-frame (event)
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"Handle delete-frame events from the X server."
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(interactive "e")
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(let ((frame (posn-window (event-start event)))
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(i 0)
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(tail (frame-list)))
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(while tail
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(and (frame-visible-p (car tail))
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(not (eq (car tail) frame))
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(setq i (1+ i)))
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(setq tail (cdr tail)))
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(if (> i 0)
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(delete-frame frame t)
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;; Gildea@x.org says it is ok to ask questions before terminating.
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(save-buffers-kill-emacs))))
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;;;; Arrangement of frames at startup
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;;; 1) Load the window system startup file from the lisp library and read the
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;;; high-priority arguments (-q and the like). The window system startup
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;;; file should create any frames specified in the window system defaults.
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;;;
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;;; 2) If no frames have been opened, we open an initial text frame.
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;;;
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;;; 3) Once the init file is done, we apply any newly set parameters
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;;; in initial-frame-alist to the frame.
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;; These are now called explicitly at the proper times,
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;; since that is easier to understand.
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;; Actually using hooks within Emacs is bad for future maintenance. --rms.
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;; (add-hook 'before-init-hook 'frame-initialize)
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;; (add-hook 'window-setup-hook 'frame-notice-user-settings)
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;;; If we create the initial frame, this is it.
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(defvar frame-initial-frame nil)
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;; Record the parameters used in frame-initialize to make the initial frame.
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(defvar frame-initial-frame-alist)
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(defvar frame-initial-geometry-arguments nil)
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;;; startup.el calls this function before loading the user's init
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;;; file - if there is no frame with a minibuffer open now, create
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;;; one to display messages while loading the init file.
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(defun frame-initialize ()
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"Create an in initial frame if necessary."
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;; Are we actually running under a window system at all?
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(if (and window-system (not noninteractive) (not (eq window-system 'pc)))
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(progn
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;; Turn on special-display processing only if there's a window system.
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(setq special-display-function 'special-display-popup-frame)
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;; If there is no frame with a minibuffer besides the terminal
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;; frame, then we need to create the opening frame. Make sure
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;; it has a minibuffer, but let initial-frame-alist omit the
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;; minibuffer spec.
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(or (delq terminal-frame (minibuffer-frame-list))
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(progn
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(setq frame-initial-frame-alist
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(append initial-frame-alist default-frame-alist nil))
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(or (assq 'horizontal-scroll-bars frame-initial-frame-alist)
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(setq frame-initial-frame-alist
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(cons '(horizontal-scroll-bars . t)
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frame-initial-frame-alist)))
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(setq default-minibuffer-frame
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(setq frame-initial-frame
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(make-frame frame-initial-frame-alist)))
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;; Delete any specifications for window geometry parameters
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;; so that we won't reapply them in frame-notice-user-settings.
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;; It would be wrong to reapply them then,
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;; because that would override explicit user resizing.
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(setq initial-frame-alist
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(frame-remove-geometry-params initial-frame-alist))))
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;; At this point, we know that we have a frame open, so we
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;; can delete the terminal frame.
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(delete-frame terminal-frame)
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(setq terminal-frame nil))
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;; No, we're not running a window system. Use make-terminal-frame if
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;; we support that feature, otherwise arrange to cause errors.
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(or (eq window-system 'pc)
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(setq frame-creation-function
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(if (fboundp 'tty-create-frame-with-faces)
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'tty-create-frame-with-faces
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(function
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(lambda (parameters)
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(error
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"Can't create multiple frames without a window system"))))))))
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(defvar frame-notice-user-settings t
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"Non-nil means function `frame-notice-user-settings' wasn't run yet.")
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;;; startup.el calls this function after loading the user's init
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;;; file. Now default-frame-alist and initial-frame-alist contain
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;;; information to which we must react; do what needs to be done.
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(defun frame-notice-user-settings ()
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"Act on user's init file settings of frame parameters.
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React to settings of `default-frame-alist', `initial-frame-alist' there."
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;; Make menu-bar-mode and default-frame-alist consistent.
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(if (boundp 'menu-bar-mode)
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(let ((default (assq 'menu-bar-lines default-frame-alist)))
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(if default
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(setq menu-bar-mode (not (eq (cdr default) 0)))
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(setq default-frame-alist
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(cons (cons 'menu-bar-lines (if menu-bar-mode 1 0))
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default-frame-alist)))))
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;; Creating and deleting frames may shift the selected frame around,
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;; and thus the current buffer. Protect against that. We don't
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;; want to use save-excursion here, because that may also try to set
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;; the buffer of the selected window, which fails when the selected
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;; window is the minibuffer.
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(let ((old-buffer (current-buffer)))
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(when (and frame-notice-user-settings
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(null frame-initial-frame))
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;; This case happens when we don't have a window system.
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(let ((parms (frame-parameters frame-initial-frame)))
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;; Don't change the frame names.
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(setq parms (delq (assq 'name parms) parms))
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;; Can't modify the minibuffer parameter, so don't try.
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(setq parms (delq (assq 'minibuffer parms) parms))
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(modify-frame-parameters nil
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(append initial-frame-alist
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default-frame-alist
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parms
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nil))))
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;; If the initial frame is still around, apply initial-frame-alist
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;; and default-frame-alist to it.
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(if (frame-live-p frame-initial-frame)
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;; The initial frame we create above always has a minibuffer.
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;; If the user wants to remove it, or make it a minibuffer-only
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;; frame, then we'll have to delete the current frame and make a
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;; new one; you can't remove or add a root window to/from an
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;; existing frame.
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;;
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;; NOTE: default-frame-alist was nil when we created the
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;; existing frame. We need to explicitly include
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;; default-frame-alist in the parameters of the screen we
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;; create here, so that its new value, gleaned from the user's
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;; .emacs file, will be applied to the existing screen.
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(if (not (eq (cdr (or (assq 'minibuffer initial-frame-alist)
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(assq 'minibuffer default-frame-alist)
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'(minibuffer . t)))
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t))
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;; Create the new frame.
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(let (parms new)
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;; If the frame isn't visible yet, wait till it is.
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;; If the user has to position the window,
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;; Emacs doesn't know its real position until
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;; the frame is seen to be visible.
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(while (not (cdr (assq 'visibility
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(frame-parameters frame-initial-frame))))
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(sleep-for 1))
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(setq parms (frame-parameters frame-initial-frame))
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;; Get rid of `name' unless it was specified explicitly before.
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(or (assq 'name frame-initial-frame-alist)
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(setq parms (delq (assq 'name parms) parms)))
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(setq parms (append initial-frame-alist
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default-frame-alist
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parms
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nil))
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;; Get rid of `reverse', because that was handled
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;; when we first made the frame.
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(setq parms (cons '(reverse) (delq (assq 'reverse parms) parms)))
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(if (assq 'height frame-initial-geometry-arguments)
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(setq parms (assq-delete-all 'height parms)))
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(if (assq 'width frame-initial-geometry-arguments)
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(setq parms (assq-delete-all 'width parms)))
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(if (assq 'left frame-initial-geometry-arguments)
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(setq parms (assq-delete-all 'left parms)))
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(if (assq 'top frame-initial-geometry-arguments)
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(setq parms (assq-delete-all 'top parms)))
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(setq new
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(make-frame
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;; Use the geometry args that created the existing
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;; frame, rather than the parms we get for it.
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(append frame-initial-geometry-arguments
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'((user-size . t) (user-position . t))
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parms)))
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;; The initial frame, which we are about to delete, may be
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;; the only frame with a minibuffer. If it is, create a
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;; new one.
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(or (delq frame-initial-frame (minibuffer-frame-list))
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(make-initial-minibuffer-frame nil))
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;; If the initial frame is serving as a surrogate
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;; minibuffer frame for any frames, we need to wean them
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;; onto a new frame. The default-minibuffer-frame
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;; variable must be handled similarly.
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(let ((users-of-initial
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(filtered-frame-list
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(function (lambda (frame)
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(and (not (eq frame frame-initial-frame))
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(eq (window-frame
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(minibuffer-window frame))
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frame-initial-frame)))))))
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(if (or users-of-initial
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(eq default-minibuffer-frame frame-initial-frame))
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;; Choose an appropriate frame. Prefer frames which
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;; are only minibuffers.
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(let* ((new-surrogate
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(car
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(or (filtered-frame-list
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(function
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(lambda (frame)
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(eq (cdr (assq 'minibuffer
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(frame-parameters frame)))
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'only))))
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(minibuffer-frame-list))))
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(new-minibuffer (minibuffer-window new-surrogate)))
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(if (eq default-minibuffer-frame frame-initial-frame)
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(setq default-minibuffer-frame new-surrogate))
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;; Wean the frames using frame-initial-frame as
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;; their minibuffer frame.
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(mapcar
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(function
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(lambda (frame)
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(modify-frame-parameters
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frame (list (cons 'minibuffer new-minibuffer)))))
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users-of-initial))))
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;; Redirect events enqueued at this frame to the new frame.
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;; Is this a good idea?
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(redirect-frame-focus frame-initial-frame new)
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;; Finally, get rid of the old frame.
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(delete-frame frame-initial-frame t))
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;; Otherwise, we don't need all that rigamarole; just apply
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;; the new parameters.
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(let (newparms allparms tail)
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(setq allparms (append initial-frame-alist
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default-frame-alist))
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(if (assq 'height frame-initial-geometry-arguments)
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(setq allparms (assq-delete-all 'height allparms)))
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(if (assq 'width frame-initial-geometry-arguments)
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(setq allparms (assq-delete-all 'width allparms)))
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(if (assq 'left frame-initial-geometry-arguments)
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(setq allparms (assq-delete-all 'left allparms)))
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(if (assq 'top frame-initial-geometry-arguments)
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(setq allparms (assq-delete-all 'top allparms)))
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(setq tail allparms)
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;; Find just the parms that have changed since we first
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;; made this frame. Those are the ones actually set by
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;; the init file. For those parms whose values we already knew
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;; (such as those spec'd by command line options)
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;; it is undesirable to specify the parm again
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;; once the user has seen the frame and been able to alter it
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;; manually.
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(while tail
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(let (newval oldval)
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(setq oldval (assq (car (car tail))
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frame-initial-frame-alist))
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(setq newval (cdr (assq (car (car tail)) allparms)))
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(or (and oldval (eq (cdr oldval) newval))
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(setq newparms
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(cons (cons (car (car tail)) newval) newparms))))
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(setq tail (cdr tail)))
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(setq newparms (nreverse newparms))
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(modify-frame-parameters frame-initial-frame
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newparms)
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;; If we changed the background color,
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;; we need to update the background-mode parameter
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;; and maybe some faces too.
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(when (assq 'background-color newparms)
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(unless (assq 'background-mode newparms)
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(frame-set-background-mode frame-initial-frame))
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(face-set-after-frame-default frame-initial-frame))
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(if (assq 'font newparms)
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(frame-update-faces frame-initial-frame)))))
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;; Restore the original buffer.
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(set-buffer old-buffer)
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;; Make sure the initial frame can be GC'd if it is ever deleted.
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;; Make sure frame-notice-user-settings does nothing if called twice.
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(setq frame-notice-user-settings nil)
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(setq frame-initial-frame nil)))
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(defun make-initial-minibuffer-frame (display)
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(let ((parms (append minibuffer-frame-alist '((minibuffer . only)))))
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(if display
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(make-frame-on-display display parms)
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(make-frame parms))))
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;;;; Creation of additional frames, and other frame miscellanea
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(defun get-other-frame ()
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"Return some frame other than the current frame.
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Create one if necessary. Note that the minibuffer frame, if separate,
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is not considered (see `next-frame')."
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(let ((s (if (equal (next-frame (selected-frame)) (selected-frame))
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(make-frame)
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(next-frame (selected-frame)))))
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s))
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(defun next-multiframe-window ()
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"Select the next window, regardless of which frame it is on."
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(interactive)
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(select-window (next-window (selected-window)
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(> (minibuffer-depth) 0)
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t)))
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(defun previous-multiframe-window ()
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"Select the previous window, regardless of which frame it is on."
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(interactive)
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(select-window (previous-window (selected-window)
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(> (minibuffer-depth) 0)
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t)))
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(defun make-frame-on-display (display &optional parameters)
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||
"Make a frame on display DISPLAY.
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||
The optional second argument PARAMETERS specifies additional frame parameters."
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||
(interactive "sMake frame on display: ")
|
||
(or (string-match "\\`[^:]*:[0-9]+\\(\\.[0-9]+\\)?\\'" display)
|
||
(error "Invalid display, not HOST:SERVER or HOST:SERVER.SCREEN"))
|
||
(make-frame (cons (cons 'display display) parameters)))
|
||
|
||
(defun make-frame-command ()
|
||
"Make a new frame, and select it if the terminal displays only one frame."
|
||
(interactive)
|
||
(if (and window-system (not (eq window-system 'pc)))
|
||
(make-frame)
|
||
(select-frame (make-frame))))
|
||
|
||
(defvar before-make-frame-hook nil
|
||
"Functions to run before a frame is created.")
|
||
|
||
(defvar after-make-frame-functions nil
|
||
"Functions to run after a frame is created.
|
||
The functions are run with one arg, the newly created frame.")
|
||
|
||
(defvar after-setting-font-hooks nil
|
||
"Functions to run after a frame's font has been changed.")
|
||
|
||
;; Alias, kept temporarily.
|
||
(defalias 'new-frame 'make-frame)
|
||
|
||
(defun make-frame (&optional parameters)
|
||
"Return a newly created frame displaying the current buffer.
|
||
Optional argument PARAMETERS is an alist of parameters for the new frame.
|
||
Each element of PARAMETERS should have the form (NAME . VALUE), for example:
|
||
|
||
(name . STRING) The frame should be named STRING.
|
||
|
||
(width . NUMBER) The frame should be NUMBER characters in width.
|
||
(height . NUMBER) The frame should be NUMBER text lines high.
|
||
|
||
You cannot specify either `width' or `height', you must use neither or both.
|
||
|
||
(minibuffer . t) The frame should have a minibuffer.
|
||
(minibuffer . nil) The frame should have no minibuffer.
|
||
(minibuffer . only) The frame should contain only a minibuffer.
|
||
(minibuffer . WINDOW) The frame should use WINDOW as its minibuffer window.
|
||
|
||
Before the frame is created (via `frame-creation-function'), functions on the
|
||
hook `before-make-frame-hook' are run. After the frame is created, functions
|
||
on `after-make-frame-functions' are run with one arg, the newly created frame."
|
||
(interactive)
|
||
(run-hooks 'before-make-frame-hook)
|
||
(let ((frame (funcall frame-creation-function parameters)))
|
||
(run-hook-with-args 'after-make-frame-functions frame)
|
||
frame))
|
||
|
||
(defun filtered-frame-list (predicate)
|
||
"Return a list of all live frames which satisfy PREDICATE."
|
||
(let ((frames (frame-list))
|
||
good-frames)
|
||
(while (consp frames)
|
||
(if (funcall predicate (car frames))
|
||
(setq good-frames (cons (car frames) good-frames)))
|
||
(setq frames (cdr frames)))
|
||
good-frames))
|
||
|
||
(defun minibuffer-frame-list ()
|
||
"Return a list of all frames with their own minibuffers."
|
||
(filtered-frame-list
|
||
(function (lambda (frame)
|
||
(eq frame (window-frame (minibuffer-window frame)))))))
|
||
|
||
(defun frames-on-display-list (&optional display)
|
||
"Return a list of all frames on DISPLAY.
|
||
DISPLAY is a name of a display, a string of the form HOST:SERVER.SCREEN.
|
||
If DISPLAY is omitted or nil, it defaults to the selected frame's display."
|
||
(let* ((display (or display
|
||
(cdr (assoc 'display (frame-parameters)))))
|
||
(func
|
||
(function (lambda (frame)
|
||
(eq (cdr (assoc 'display (frame-parameters frame)))
|
||
display)))))
|
||
(filtered-frame-list func)))
|
||
|
||
(defun framep-on-display (&optional display)
|
||
"Return the type of frames on DISPLAY.
|
||
DISPLAY may be a display name or a frame. If it is a frame, its type is
|
||
returned.
|
||
If DISPLAY is omitted or nil, it defaults to the selected frame's display.
|
||
All frames on a given display are of the same type."
|
||
(or (framep display)
|
||
(framep (car (frames-on-display-list display)))))
|
||
|
||
(defun frame-remove-geometry-params (param-list)
|
||
"Return the parameter list PARAM-LIST, but with geometry specs removed.
|
||
This deletes all bindings in PARAM-LIST for `top', `left', `width',
|
||
`height', `user-size' and `user-position' parameters.
|
||
Emacs uses this to avoid overriding explicit moves and resizings from
|
||
the user during startup."
|
||
(setq param-list (cons nil param-list))
|
||
(let ((tail param-list))
|
||
(while (consp (cdr tail))
|
||
(if (and (consp (car (cdr tail)))
|
||
(memq (car (car (cdr tail)))
|
||
'(height width top left user-position user-size)))
|
||
(progn
|
||
(setq frame-initial-geometry-arguments
|
||
(cons (car (cdr tail)) frame-initial-geometry-arguments))
|
||
(setcdr tail (cdr (cdr tail))))
|
||
(setq tail (cdr tail)))))
|
||
(setq frame-initial-geometry-arguments
|
||
(nreverse frame-initial-geometry-arguments))
|
||
(cdr param-list))
|
||
|
||
|
||
(defcustom focus-follows-mouse t
|
||
"*Non-nil if window system changes focus when you move the mouse."
|
||
:type 'boolean
|
||
:group 'frames
|
||
:version "20.3")
|
||
|
||
(defun other-frame (arg)
|
||
"Select the ARG'th different visible frame, and raise it.
|
||
All frames are arranged in a cyclic order.
|
||
This command selects the frame ARG steps away in that order.
|
||
A negative ARG moves in the opposite order."
|
||
(interactive "p")
|
||
(let ((frame (selected-frame)))
|
||
(while (> arg 0)
|
||
(setq frame (next-frame frame))
|
||
(while (not (eq (frame-visible-p frame) t))
|
||
(setq frame (next-frame frame)))
|
||
(setq arg (1- arg)))
|
||
(while (< arg 0)
|
||
(setq frame (previous-frame frame))
|
||
(while (not (eq (frame-visible-p frame) t))
|
||
(setq frame (previous-frame frame)))
|
||
(setq arg (1+ arg)))
|
||
(select-frame frame)
|
||
(raise-frame frame)
|
||
;; Ensure, if possible, that frame gets input focus.
|
||
(cond ((eq window-system 'x)
|
||
(x-focus-frame frame))
|
||
((eq window-system 'w32)
|
||
(w32-focus-frame frame)))
|
||
(when (and (not (eq window-system 'w32))
|
||
focus-follows-mouse)
|
||
(set-mouse-position (selected-frame) (1- (frame-width)) 0))))
|
||
|
||
(defun make-frame-names-alist ()
|
||
(let* ((current-frame (selected-frame))
|
||
(falist
|
||
(cons
|
||
(cons (frame-parameter current-frame 'name) current-frame) nil))
|
||
(frame (next-frame nil t)))
|
||
(while (not (eq frame current-frame))
|
||
(progn
|
||
(setq falist (cons (cons (frame-parameter frame 'name) frame) falist))
|
||
(setq frame (next-frame frame t))))
|
||
falist))
|
||
|
||
(defvar frame-name-history nil)
|
||
(defun select-frame-by-name (name)
|
||
"Select the frame whose name is NAME and raise it.
|
||
If there is no frame by that name, signal an error."
|
||
(interactive
|
||
(let* ((frame-names-alist (make-frame-names-alist))
|
||
(default (car (car frame-names-alist)))
|
||
(input (completing-read
|
||
(format "Select Frame (default %s): " default)
|
||
frame-names-alist nil t nil 'frame-name-history)))
|
||
(if (= (length input) 0)
|
||
(list default)
|
||
(list input))))
|
||
(let* ((frame-names-alist (make-frame-names-alist))
|
||
(frame (cdr (assoc name frame-names-alist))))
|
||
(or frame
|
||
(error "There is no frame named `%s'" name))
|
||
(make-frame-visible frame)
|
||
(raise-frame frame)
|
||
(select-frame frame)
|
||
;; Ensure, if possible, that frame gets input focus.
|
||
(if (eq window-system 'w32)
|
||
(w32-focus-frame frame)
|
||
(when focus-follows-mouse
|
||
(set-mouse-position (selected-frame) (1- (frame-width)) 0)))))
|
||
|
||
;;;; Frame configurations
|
||
|
||
(defun current-frame-configuration ()
|
||
"Return a list describing the positions and states of all frames.
|
||
Its car is `frame-configuration'.
|
||
Each element of the cdr is a list of the form (FRAME ALIST WINDOW-CONFIG),
|
||
where
|
||
FRAME is a frame object,
|
||
ALIST is an association list specifying some of FRAME's parameters, and
|
||
WINDOW-CONFIG is a window configuration object for FRAME."
|
||
(cons 'frame-configuration
|
||
(mapcar (function
|
||
(lambda (frame)
|
||
(list frame
|
||
(frame-parameters frame)
|
||
(current-window-configuration frame))))
|
||
(frame-list))))
|
||
|
||
(defun set-frame-configuration (configuration &optional nodelete)
|
||
"Restore the frames to the state described by CONFIGURATION.
|
||
Each frame listed in CONFIGURATION has its position, size, window
|
||
configuration, and other parameters set as specified in CONFIGURATION.
|
||
Ordinarily, this function deletes all existing frames not
|
||
listed in CONFIGURATION. But if optional second argument NODELETE
|
||
is given and non-nil, the unwanted frames are iconified instead."
|
||
(or (frame-configuration-p configuration)
|
||
(signal 'wrong-type-argument
|
||
(list 'frame-configuration-p configuration)))
|
||
(let ((config-alist (cdr configuration))
|
||
frames-to-delete)
|
||
(mapcar (function
|
||
(lambda (frame)
|
||
(let ((parameters (assq frame config-alist)))
|
||
(if parameters
|
||
(progn
|
||
(modify-frame-parameters
|
||
frame
|
||
;; Since we can't set a frame's minibuffer status,
|
||
;; we might as well omit the parameter altogether.
|
||
(let* ((parms (nth 1 parameters))
|
||
(mini (assq 'minibuffer parms)))
|
||
(if mini (setq parms (delq mini parms)))
|
||
parms))
|
||
(set-window-configuration (nth 2 parameters)))
|
||
(setq frames-to-delete (cons frame frames-to-delete))))))
|
||
(frame-list))
|
||
(if nodelete
|
||
;; Note: making frames invisible here was tried
|
||
;; but led to some strange behavior--each time the frame
|
||
;; was made visible again, the window manager asked afresh
|
||
;; for where to put it.
|
||
(mapcar 'iconify-frame frames-to-delete)
|
||
(mapcar 'delete-frame frames-to-delete))))
|
||
|
||
;;;; Convenience functions for accessing and interactively changing
|
||
;;;; frame parameters.
|
||
|
||
(defun frame-parameter (frame parameter)
|
||
"Return FRAME's value for parameter PARAMETER.
|
||
If FRAME is nil, describe the currently selected frame."
|
||
(cdr (assq parameter (frame-parameters frame))))
|
||
|
||
(defun frame-height (&optional frame)
|
||
"Return number of lines available for display on FRAME.
|
||
If FRAME is omitted, describe the currently selected frame."
|
||
(cdr (assq 'height (frame-parameters frame))))
|
||
|
||
(defun frame-width (&optional frame)
|
||
"Return number of columns available for display on FRAME.
|
||
If FRAME is omitted, describe the currently selected frame."
|
||
(cdr (assq 'width (frame-parameters frame))))
|
||
|
||
(defalias 'set-default-font 'set-frame-font)
|
||
(defun set-frame-font (font-name)
|
||
"Set the font of the selected frame to FONT-NAME.
|
||
When called interactively, prompt for the name of the font to use.
|
||
To get the frame's current default font, use `frame-parameters'."
|
||
(interactive "sFont name: ")
|
||
(modify-frame-parameters (selected-frame)
|
||
(list (cons 'font font-name)))
|
||
;; Update faces that want a bold or italic version of the default font.
|
||
(frame-update-faces (selected-frame))
|
||
(run-hooks 'after-setting-font-hooks))
|
||
|
||
(defun set-background-color (color-name)
|
||
"Set the background color of the selected frame to COLOR-NAME.
|
||
When called interactively, prompt for the name of the color to use.
|
||
To get the frame's current background color, use `frame-parameters'."
|
||
(interactive (list (facemenu-read-color)))
|
||
(modify-frame-parameters (selected-frame)
|
||
(list (cons 'background-color color-name)))
|
||
(frame-update-face-colors (selected-frame)))
|
||
|
||
(defun set-foreground-color (color-name)
|
||
"Set the foreground color of the selected frame to COLOR-NAME.
|
||
When called interactively, prompt for the name of the color to use.
|
||
To get the frame's current foreground color, use `frame-parameters'."
|
||
(interactive (list (facemenu-read-color)))
|
||
(modify-frame-parameters (selected-frame)
|
||
(list (cons 'foreground-color color-name)))
|
||
(frame-update-face-colors (selected-frame)))
|
||
|
||
(defun set-cursor-color (color-name)
|
||
"Set the text cursor color of the selected frame to COLOR-NAME.
|
||
When called interactively, prompt for the name of the color to use.
|
||
To get the frame's current cursor color, use `frame-parameters'."
|
||
(interactive (list (facemenu-read-color)))
|
||
(modify-frame-parameters (selected-frame)
|
||
(list (cons 'cursor-color color-name))))
|
||
|
||
(defun set-mouse-color (color-name)
|
||
"Set the color of the mouse pointer of the selected frame to COLOR-NAME.
|
||
When called interactively, prompt for the name of the color to use.
|
||
To get the frame's current mouse color, use `frame-parameters'."
|
||
(interactive (list (facemenu-read-color)))
|
||
(modify-frame-parameters (selected-frame)
|
||
(list (cons 'mouse-color
|
||
(or color-name
|
||
(cdr (assq 'mouse-color
|
||
(frame-parameters))))))))
|
||
|
||
(defun set-border-color (color-name)
|
||
"Set the color of the border of the selected frame to COLOR-NAME.
|
||
When called interactively, prompt for the name of the color to use.
|
||
To get the frame's current border color, use `frame-parameters'."
|
||
(interactive (list (facemenu-read-color)))
|
||
(modify-frame-parameters (selected-frame)
|
||
(list (cons 'border-color color-name))))
|
||
|
||
(defun auto-raise-mode (arg)
|
||
"Toggle whether or not the selected frame should auto-raise.
|
||
With arg, turn auto-raise mode on if and only if arg is positive.
|
||
Note that this controls Emacs's own auto-raise feature.
|
||
Some window managers allow you to enable auto-raise for certain windows.
|
||
You can use that for Emacs windows if you wish, but if you do,
|
||
that is beyond the control of Emacs and this command has no effect on it."
|
||
(interactive "P")
|
||
(if (null arg)
|
||
(setq arg
|
||
(if (cdr (assq 'auto-raise (frame-parameters (selected-frame))))
|
||
-1 1)))
|
||
(if (> arg 0)
|
||
(raise-frame (selected-frame)))
|
||
(modify-frame-parameters (selected-frame)
|
||
(list (cons 'auto-raise (> arg 0)))))
|
||
|
||
(defun auto-lower-mode (arg)
|
||
"Toggle whether or not the selected frame should auto-lower.
|
||
With arg, turn auto-lower mode on if and only if arg is positive.
|
||
Note that this controls Emacs's own auto-lower feature.
|
||
Some window managers allow you to enable auto-lower for certain windows.
|
||
You can use that for Emacs windows if you wish, but if you do,
|
||
that is beyond the control of Emacs and this command has no effect on it."
|
||
(interactive "P")
|
||
(if (null arg)
|
||
(setq arg
|
||
(if (cdr (assq 'auto-lower (frame-parameters (selected-frame))))
|
||
-1 1)))
|
||
(modify-frame-parameters (selected-frame)
|
||
(list (cons 'auto-lower (> arg 0)))))
|
||
(defun set-frame-name (name)
|
||
"Set the name of the selected frame to NAME.
|
||
When called interactively, prompt for the name of the frame.
|
||
The frame name is displayed on the modeline if the terminal displays only
|
||
one frame, otherwise the name is displayed on the frame's caption bar."
|
||
(interactive "sFrame name: ")
|
||
(modify-frame-parameters (selected-frame)
|
||
(list (cons 'name name))))
|
||
|
||
;;;; Frame/display capabilities.
|
||
(defun display-mouse-p (&optional display)
|
||
"Return non-nil if DISPLAY has a mouse available.
|
||
DISPLAY can be a display name, a frame, or nil (meaning the selected
|
||
frame's display)."
|
||
(let ((frame-type (framep-on-display display)))
|
||
(cond
|
||
((eq frame-type 'pc)
|
||
(msdos-mouse-p))
|
||
((eq system-type 'windows-nt)
|
||
(> w32-num-mouse-buttons 0))
|
||
((memq frame-type '(x mac))
|
||
t) ;; We assume X and Mac *always* have a pointing device
|
||
(t
|
||
(or (and (featurep 'xt-mouse)
|
||
xterm-mouse-mode)
|
||
;; t-mouse is distributed with the GPM package. It doesn't have
|
||
;; a toggle.
|
||
(featurep 't-mouse))))))
|
||
|
||
(defun display-popup-menus-p (&optional display)
|
||
"Return non-nil if popup menus are supported on DISPLAY.
|
||
DISPLAY can be a display name, a frame, or nil (meaning the selected
|
||
frame's display).
|
||
Support for popup menus requires that the mouse be available."
|
||
(and
|
||
(let ((frame-type (framep-on-display display)))
|
||
(memq frame-type '(x w32 pc mac)))
|
||
(display-mouse-p display)))
|
||
|
||
(defun display-graphic-p (&optional display)
|
||
"Return non-nil if DISPLAY is a graphic display.
|
||
Graphical displays are those which are capable of displaying several
|
||
frames and several different fonts at once. This is true for displays
|
||
that use a window system such as X, and false for text-only terminals.
|
||
DISPLAY can be a display name, a frame, or nil (meaning the selected
|
||
frame's display)."
|
||
(not (null (memq (framep-on-display display) '(x w32 mac)))))
|
||
|
||
(defun display-selections-p (&optional display)
|
||
"Return non-nil if DISPLAY supports selections.
|
||
A selection is a way to transfer text or other data between programs
|
||
via special system buffers called `selection' or `cut buffer' or
|
||
`clipboard'.
|
||
DISPLAY can be a display name, a frame, or nil (meaning the selected
|
||
frame's display)."
|
||
(let ((frame-type (framep-on-display display)))
|
||
(cond
|
||
((eq frame-type 'pc)
|
||
;; MS-DOG frames support selections when Emacs runs inside
|
||
;; the Windows' DOS Box.
|
||
(not (null dos-windows-version)))
|
||
((memq frame-type '(x w32 mac))
|
||
t) ;; FIXME?
|
||
(t
|
||
nil))))
|
||
|
||
(defun display-screens (&optional display)
|
||
"Return the number of screens associated with DISPLAY."
|
||
(let ((frame-type (framep-on-display display)))
|
||
(cond
|
||
((memq frame-type '(x w32))
|
||
(x-display-screens display))
|
||
(t ;; FIXME: is this correct for the Mac?
|
||
1))))
|
||
|
||
(defun display-pixel-height (&optional display)
|
||
"Return the height of DISPLAY's screen in pixels.
|
||
For character terminals, each character counts as a single pixel."
|
||
(let ((frame-type (framep-on-display display)))
|
||
(cond
|
||
((memq frame-type '(x w32 mac))
|
||
(x-display-pixel-height display))
|
||
(t
|
||
(frame-height (if (framep display) display (selected-frame)))))))
|
||
|
||
(defun display-pixel-width (&optional display)
|
||
"Return the width of DISPLAY's screen in pixels.
|
||
For character terminals, each character counts as a single pixel."
|
||
(let ((frame-type (framep-on-display display)))
|
||
(cond
|
||
((memq frame-type '(x w32 mac))
|
||
(x-display-pixel-width display))
|
||
(t
|
||
(frame-width (if (framep display) display (selected-frame)))))))
|
||
|
||
(defun display-mm-height (&optional display)
|
||
"Return the height of DISPLAY's screen in millimeters.
|
||
If the information is unavailable, value is nil."
|
||
(and (memq (framep-on-display display) '(x w32 mac))
|
||
(x-display-mm-height display)))
|
||
|
||
(defun display-mm-width (&optional display)
|
||
"Return the width of DISPLAY's screen in millimeters.
|
||
If the information is unavailable, value is nil."
|
||
(and (memq (framep-on-display display) '(x w32 mac))
|
||
(x-display-mm-width display)))
|
||
|
||
(defun display-backing-store (&optional display)
|
||
"Return the backing store capability of DISPLAY's screen.
|
||
The value may be `always', `when-mapped', `not-useful', or nil if
|
||
the question is inapplicable to a certain kind of display."
|
||
(let ((frame-type (framep-on-display display)))
|
||
(cond
|
||
((memq frame-type '(x w32 mac))
|
||
(x-display-backing-store display))
|
||
(t
|
||
'not-useful))))
|
||
|
||
(defun display-save-under (&optional display)
|
||
"Return non-nil if DISPLAY's screen supports the SaveUnder feature."
|
||
(let ((frame-type (framep-on-display display)))
|
||
(cond
|
||
((memq frame-type '(x w32 mac))
|
||
(x-display-save-under display))
|
||
(t
|
||
'not-useful))))
|
||
|
||
(defun display-planes (&optional display)
|
||
"Return the number of planes supported by DISPLAY."
|
||
(let ((frame-type (framep-on-display display)))
|
||
(cond
|
||
((memq frame-type '(x w32 mac))
|
||
(x-display-planes display))
|
||
((eq frame-type 'pc)
|
||
4)
|
||
(t
|
||
(truncate (log (length (tty-color-alist)) 2))))))
|
||
|
||
(defun display-color-cells (&optional display)
|
||
"Return the number of color cells supported by DISPLAY."
|
||
(let ((frame-type (framep-on-display display)))
|
||
(cond
|
||
((memq frame-type '(x w32 mac))
|
||
(x-display-color-cells display))
|
||
((eq frame-type 'pc)
|
||
16)
|
||
(t
|
||
(length (tty-color-alist))))))
|
||
|
||
(defun display-visual-class (&optional display)
|
||
"Returns the visual class of DISPLAY.
|
||
The value is one of the symbols `static-gray', `gray-scale',
|
||
`static-color', `pseudo-color', `true-color', or `direct-color'."
|
||
(let ((frame-type (framep-on-display display)))
|
||
(cond
|
||
((memq frame-type '(x w32 mac))
|
||
(x-display-visual-class display))
|
||
((and (memq frame-type '(pc t))
|
||
(tty-display-color-p display))
|
||
'static-color)
|
||
(t
|
||
'static-gray))))
|
||
|
||
|
||
;;;; Aliases for backward compatibility with Emacs 18.
|
||
(defalias 'screen-height 'frame-height)
|
||
(defalias 'screen-width 'frame-width)
|
||
|
||
(defun set-screen-width (cols &optional pretend)
|
||
"Obsolete function to change the size of the screen to COLS columns.
|
||
Optional second arg non-nil means that redisplay should use COLS columns
|
||
but that the idea of the actual width of the frame should not be changed.
|
||
This function is provided only for compatibility with Emacs 18; new code
|
||
should use `set-frame-width instead'."
|
||
(set-frame-width (selected-frame) cols pretend))
|
||
|
||
(defun set-screen-height (lines &optional pretend)
|
||
"Obsolete function to change the height of the screen to LINES lines.
|
||
Optional second arg non-nil means that redisplay should use LINES lines
|
||
but that the idea of the actual height of the screen should not be changed.
|
||
This function is provided only for compatibility with Emacs 18; new code
|
||
should use `set-frame-height' instead."
|
||
(set-frame-height (selected-frame) lines pretend))
|
||
|
||
(defun delete-other-frames (&optional frame)
|
||
"Delete all frames except FRAME.
|
||
FRAME nil or omitted means delete all frames except the selected frame."
|
||
(interactive)
|
||
(unless frame
|
||
(setq frame (selected-frame)))
|
||
(mapcar 'delete-frame (delq frame (frame-list))))
|
||
|
||
|
||
(make-obsolete 'screen-height 'frame-height)
|
||
(make-obsolete 'screen-width 'frame-width)
|
||
(make-obsolete 'set-screen-width 'set-frame-width)
|
||
(make-obsolete 'set-screen-height 'set-frame-height)
|
||
|
||
|
||
;;; Highlighting trailing whitespace.
|
||
|
||
(make-variable-buffer-local 'show-trailing-whitespace)
|
||
|
||
(defcustom show-trailing-whitespace nil
|
||
"*Non-nil means highlight trailing whitespace in face `trailing-whitespace'."
|
||
:tag "Highlight trailing whitespace."
|
||
:set #'(lambda (symbol value) (set-default symbol value))
|
||
:type 'boolean
|
||
:group 'font-lock)
|
||
|
||
|
||
|
||
;;; Blinking cursor
|
||
|
||
(defgroup cursor nil
|
||
"Displaying text cursors."
|
||
:version "21.1"
|
||
:group 'frames)
|
||
|
||
(defcustom blink-cursor-delay 0.5
|
||
"*Seconds of idle time after which cursor starts to blink."
|
||
:tag "Delay in seconds."
|
||
:type 'number
|
||
:group 'cursor)
|
||
|
||
(defcustom blink-cursor-interval 0.5
|
||
"*Length of cursor blink interval in seconds."
|
||
:tag "Blink interval in seconds."
|
||
:type 'number
|
||
:group 'cursor)
|
||
|
||
(defvar blink-cursor-idle-timer nil
|
||
"Timer started after `blink-cursor-delay' seconds of Emacs idle time.
|
||
The function `blink-cursor-start' is called when the timer fires.")
|
||
|
||
(defvar blink-cursor-timer nil
|
||
"Timer started from `blink-cursor-start'.
|
||
This timer calls `blink-cursor' every `blink-cursor-interval' seconds.")
|
||
|
||
(defvar blink-cursor-mode nil
|
||
"Non-nil means blinking cursor is active.")
|
||
|
||
(defun blink-cursor-mode (arg)
|
||
"Toggle blinking cursor mode.
|
||
With arg, turn blinking cursor mode on iff arg is positive.
|
||
When blinking cursor mode is enabled, the cursor of the selected
|
||
window blinks."
|
||
(interactive "P")
|
||
(let ((on-p (if (null arg)
|
||
(not blink-cursor-mode)
|
||
(> (prefix-numeric-value arg) 0))))
|
||
(if blink-cursor-idle-timer
|
||
(cancel-timer blink-cursor-idle-timer))
|
||
(if blink-cursor-timer
|
||
(cancel-timer blink-cursor-timer))
|
||
(setq blink-cursor-idle-timer nil
|
||
blink-cursor-timer nil
|
||
blink-cursor-mode nil)
|
||
(if on-p
|
||
(progn
|
||
;; Hide the cursor.
|
||
(internal-show-cursor nil nil)
|
||
(setq blink-cursor-idle-timer
|
||
(run-with-idle-timer blink-cursor-delay
|
||
blink-cursor-delay
|
||
'blink-cursor-start))
|
||
(setq blink-cursor-mode t))
|
||
(internal-show-cursor nil t))))
|
||
|
||
(defcustom blink-cursor (not (eq system-type 'ms-dos))
|
||
"*Non-nil means blinking cursor mode is active."
|
||
:tag "Blinking cursor"
|
||
:type 'boolean
|
||
:group 'cursor
|
||
:set #'(lambda (symbol value)
|
||
(set-default symbol value)
|
||
(blink-cursor-mode (or value 0))))
|
||
|
||
(defun blink-cursor-start ()
|
||
"Timer function called from the timer `blink-cursor-idle-timer'.
|
||
This starts the timer `blink-cursor-timer', which makes the cursor blink
|
||
if appropriate. It also arranges to cancel that timer when the next
|
||
command starts, by installing a pre-command hook."
|
||
(when (null blink-cursor-timer)
|
||
(add-hook 'pre-command-hook 'blink-cursor-end)
|
||
(setq blink-cursor-timer
|
||
(run-with-timer blink-cursor-interval blink-cursor-interval
|
||
'blink-cursor-timer-function))))
|
||
|
||
(defun blink-cursor-timer-function ()
|
||
"Timer function of timer `blink-cursor-timer'."
|
||
(internal-show-cursor nil (not (internal-show-cursor-p))))
|
||
|
||
(defun blink-cursor-end ()
|
||
"Stop cursor blinking.
|
||
This is installed as a pre-command hook by `blink-cursor-start'.
|
||
When run, it cancels the timer `blink-cursor-timer' and removes
|
||
itself as a pre-command hook."
|
||
(remove-hook 'pre-command-hook 'blink-cursor-end)
|
||
(internal-show-cursor nil t)
|
||
(cancel-timer blink-cursor-timer)
|
||
(setq blink-cursor-timer nil))
|
||
|
||
|
||
|
||
;;; Busy-cursor.
|
||
|
||
(defcustom busy-cursor t
|
||
"*Non-nil means show a busy-cursor when running under a window system."
|
||
:tag "Busy-cursor"
|
||
:type 'boolean
|
||
:group 'cursor
|
||
:get #'(lambda (symbol) display-busy-cursor)
|
||
:set #'(lambda (symbol value)
|
||
(set-default symbol value)
|
||
(setq display-busy-cursor value)))
|
||
|
||
(defcustom busy-cursor-delay-seconds 1
|
||
"*Seconds to wait before displaying a busy-cursor."
|
||
:tag "Busy-cursor delay"
|
||
:type 'number
|
||
:group 'cursor
|
||
:get #'(lambda (symbol) busy-cursor-delay)
|
||
:set #'(lambda (symbol value)
|
||
(set-default symbol value)
|
||
(setq busy-cursor-delay value)))
|
||
|
||
|
||
(defcustom show-cursor-in-non-selected-windows t
|
||
"*Non-nil means show a hollow box cursor in non-selected-windows.
|
||
If nil, don't show a cursor except in the selected window."
|
||
:tag "Cursor in non-selected windows"
|
||
:type 'boolean
|
||
:group 'cursor
|
||
:get #'(lambda (symbol) cursor-in-non-selected-windows)
|
||
:set #'(lambda (symbol value)
|
||
(set-default symbol value)
|
||
(setq cursor-in-non-selected-windows value)
|
||
(force-mode-line-update t)))
|
||
|
||
|
||
;;;; Key bindings
|
||
|
||
(define-key ctl-x-5-map "2" 'make-frame-command)
|
||
(define-key ctl-x-5-map "1" 'delete-other-frames)
|
||
(define-key ctl-x-5-map "0" 'delete-frame)
|
||
(define-key ctl-x-5-map "o" 'other-frame)
|
||
|
||
(provide 'frame)
|
||
|
||
;;; frame.el ends here
|
||
(frame-notice-user-settings):
|