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2265 lines
88 KiB
EmacsLisp
2265 lines
88 KiB
EmacsLisp
;;; frame.el --- multi-frame management independent of window systems -*- lexical-binding:t -*-
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;; Copyright (C) 1993-1994, 1996-1997, 2000-2017 Free Software
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;; Foundation, Inc.
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;; Maintainer: emacs-devel@gnu.org
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;; Keywords: internal
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;; Package: emacs
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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 3 of the License, or
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;; (at your option) 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. If not, see <http://www.gnu.org/licenses/>.
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;;; Commentary:
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;;; Code:
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(eval-when-compile (require 'cl-lib))
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(cl-defgeneric frame-creation-function (params)
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"Method for window-system dependent functions to create a new frame.
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The window system startup file should add its frame creation
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function to this method, which should take an alist of parameters
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as its argument.")
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(cl-generic-define-context-rewriter window-system (value)
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;; If `value' is a `consp', it's probably an old-style specializer,
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;; so just use it, and anyway `eql' isn't very useful on cons cells.
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`(window-system ,(if (consp value) value `(eql ,value))))
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(cl-defmethod frame-creation-function (params &context (window-system nil))
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;; It's tempting to get rid of tty-create-frame-with-faces and turn it into
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;; this method (i.e. move this method to faces.el), but faces.el is loaded
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;; much earlier from loadup.el (before cl-generic and even before
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;; cl-preloaded), so we'd first have to reorder that part.
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(tty-create-frame-with-faces params))
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(defvar window-system-default-frame-alist nil
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"Window-system dependent default frame parameters.
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The value should be an alist of elements (WINDOW-SYSTEM . ALIST),
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where WINDOW-SYSTEM is a window system symbol (as returned by `framep')
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and ALIST is a frame parameter alist like `default-frame-alist'.
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Then, for frames on WINDOW-SYSTEM, any parameters specified in
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ALIST supersede the corresponding parameters specified in
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`default-frame-alist'.")
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(defvar display-format-alist nil
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"Alist of patterns to decode display names.
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The car of each entry is a regular expression matching a display
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name string. The cdr is a symbol giving the window-system that
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handles the corresponding kind of display.")
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;; The initial value given here 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 parameters for the initial X window frame.
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You can set this in your init file; for example,
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(setq initial-frame-alist
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\\='((top . 1) (left . 1) (width . 80) (height . 55)))
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Parameters specified here supersede the values given in
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`default-frame-alist'.
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If the value calls for a frame without a minibuffer, and you have
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not created a minibuffer frame on your own, a minibuffer frame is
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created according to `minibuffer-frame-alist'.
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You can specify geometry-related options for just the initial
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frame by setting this variable in your init file; however, they
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won't take effect until Emacs reads your init file, which happens
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after creating the initial frame. If you want the initial frame
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to have the proper geometry as soon as it appears, you need to
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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 parameters for the initial minibuffer frame.
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This is the minibuffer frame created if `initial-frame-alist'
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calls for a frame without a minibuffer. The parameters specified
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here supersede those given in `default-frame-alist', for the
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initial minibuffer frame.
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You can set this in your init 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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It is not necessary to include (minibuffer . only); that is
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appended when the minibuffer frame is created."
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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 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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(defun handle-focus-in (_event)
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"Handle a focus-in event.
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Focus-in events are usually bound to this function.
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Focus-in events occur when a frame has focus, but a switch-frame event
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is not generated.
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This function runs the hook `focus-in-hook'."
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(interactive "e")
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(run-hooks 'focus-in-hook))
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(defun handle-focus-out (_event)
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"Handle a focus-out event.
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Focus-out events are usually bound to this function.
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Focus-out events occur when no frame has focus.
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This function runs the hook `focus-out-hook'."
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(interactive "e")
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(run-hooks 'focus-out-hook))
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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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;; 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 initial frame if necessary."
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;; Are we actually running under a window system at all?
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(if (and initial-window-system
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(not noninteractive)
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(not (eq initial-window-system 'pc)))
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(progn
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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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(setq frame-initial-frame-alist
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(cons (cons 'window-system initial-window-system)
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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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;; Copy the environment of the Emacs process into the new frame.
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(set-frame-parameter frame-initial-frame 'environment
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(frame-parameter terminal-frame 'environment))
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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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(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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(declare-function tool-bar-mode "tool-bar" (&optional arg))
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(declare-function tool-bar-height "xdisp.c" (&optional frame pixelwise))
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(defalias 'tool-bar-lines-needed 'tool-bar-height)
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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 `initial-frame-alist',
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`window-system-default-frame-alist' and `default-frame-alist'
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there (in decreasing order of priority)."
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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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(window-system-frame-alist
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(cdr (assq initial-window-system
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window-system-default-frame-alist))))
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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, and
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;; also for MS-DOS frames.
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(let ((parms (frame-parameters)))
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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
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nil
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(if initial-window-system
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parms
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;; initial-frame-alist and default-frame-alist were already
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;; applied in pc-win.el.
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(append initial-frame-alist window-system-frame-alist
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default-frame-alist parms nil)))
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(if (null initial-window-system) ;; MS-DOS does this differently in pc-win.el
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(let ((newparms (frame-parameters))
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(frame (selected-frame)))
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(tty-handle-reverse-video frame newparms)
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;; tty-handle-reverse-video might change the frame's
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;; color parameters, and we need to use the updated
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;; value below.
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(setq newparms (frame-parameters))
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;; If we changed the background color, we need to update
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;; the background-mode parameter, and maybe some faces,
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;; too.
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(when (assq 'background-color newparms)
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(unless (or (assq 'background-mode initial-frame-alist)
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(assq 'background-mode default-frame-alist))
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(frame-set-background-mode frame))
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(face-set-after-frame-default frame newparms))))))
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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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(when (frame-live-p frame-initial-frame)
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;; When tool-bar has been switched off, correct the frame size
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;; by the lines added in x-create-frame for the tool-bar and
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;; switch `tool-bar-mode' off.
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(when (display-graphic-p)
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(let* ((init-lines
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(assq 'tool-bar-lines initial-frame-alist))
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(other-lines
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(or (assq 'tool-bar-lines window-system-frame-alist)
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(assq 'tool-bar-lines default-frame-alist)))
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(lines (or init-lines other-lines))
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(height (tool-bar-height frame-initial-frame t)))
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;; Adjust frame top if either zero (nil) tool bar lines have
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;; been requested in the most relevant of the frame's alists
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;; or tool bar mode has been explicitly turned off in the
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;; user's init file.
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(when (and (> height 0)
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(or (and lines
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(or (null (cdr lines))
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(eq 0 (cdr lines))))
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(not tool-bar-mode)))
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(let* ((initial-top
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(cdr (assq 'top frame-initial-geometry-arguments)))
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(top (frame-parameter frame-initial-frame 'top)))
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(when (and (consp initial-top) (eq '- (car initial-top)))
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(let ((adjusted-top
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(cond
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((and (consp top) (eq '+ (car top)))
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(list '+ (+ (cadr top) height)))
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((and (consp top) (eq '- (car top)))
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(list '- (- (cadr top) height)))
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(t (+ top height)))))
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(modify-frame-parameters
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frame-initial-frame `((top . ,adjusted-top))))))
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;; Reset `tool-bar-mode' when zero tool bar lines have been
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;; requested for the window-system or default frame alists.
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(when (and tool-bar-mode
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(and other-lines
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(or (null (cdr other-lines))
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(eq 0 (cdr other-lines)))))
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(tool-bar-mode -1)))))
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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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;; init 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 window-system-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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;; MS-Windows needs this to avoid inflooping below.
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(if (eq system-type 'windows-nt)
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(sit-for 0 t))
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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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;; An explicit parent-id is a request to XEmbed the frame.
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(or (assq 'parent-id frame-initial-frame-alist)
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(setq parms (delq (assq 'parent-id parms) parms)))
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(setq parms (append initial-frame-alist
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window-system-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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(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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(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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(dolist (frame users-of-initial)
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(modify-frame-parameters
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frame (list (cons 'minibuffer new-minibuffer)))))))
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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 rigmarole; 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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window-system-frame-alist
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default-frame-alist nil))
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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
|
||
;; once the user has seen the frame and been able to alter it
|
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;; manually.
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||
(let (newval oldval)
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(dolist (entry tail)
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(setq oldval (assq (car entry) frame-initial-frame-alist))
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(setq newval (cdr (assq (car entry) allparms)))
|
||
(or (and oldval (eq (cdr oldval) newval))
|
||
(setq newparms
|
||
(cons (cons (car entry) newval) newparms)))))
|
||
(setq newparms (nreverse newparms))
|
||
|
||
(let ((new-bg (assq 'background-color newparms)))
|
||
;; If the `background-color' parameter is changed, apply
|
||
;; it first, then make sure that the `background-mode'
|
||
;; parameter and other faces are updated, before applying
|
||
;; the other parameters.
|
||
(when new-bg
|
||
(modify-frame-parameters frame-initial-frame
|
||
(list new-bg))
|
||
(unless (assq 'background-mode newparms)
|
||
(frame-set-background-mode frame-initial-frame))
|
||
(face-set-after-frame-default frame-initial-frame)
|
||
(setq newparms (delq new-bg newparms)))
|
||
|
||
(when (numberp (car frame-size-history))
|
||
(setq frame-size-history
|
||
(cons (1- (car frame-size-history))
|
||
(cons
|
||
(list frame-initial-frame
|
||
"FRAME-NOTICE-USER"
|
||
nil newparms)
|
||
(cdr frame-size-history)))))
|
||
|
||
(modify-frame-parameters frame-initial-frame newparms)))))
|
||
|
||
;; Restore the original buffer.
|
||
(set-buffer old-buffer)
|
||
|
||
;; Make sure the initial frame can be GC'd if it is ever deleted.
|
||
;; Make sure frame-notice-user-settings does nothing if called twice.
|
||
(setq frame-notice-user-settings nil)
|
||
(setq frame-initial-frame nil)))
|
||
|
||
(defun make-initial-minibuffer-frame (display)
|
||
(let ((parms (append minibuffer-frame-alist '((minibuffer . only)))))
|
||
(if display
|
||
(make-frame-on-display display parms)
|
||
(make-frame parms))))
|
||
|
||
;;;; Creation of additional frames, and other frame miscellanea
|
||
|
||
(defun modify-all-frames-parameters (alist)
|
||
"Modify all current and future frames' parameters according to ALIST.
|
||
This changes `default-frame-alist' and possibly `initial-frame-alist'.
|
||
Furthermore, this function removes all parameters in ALIST from
|
||
`window-system-default-frame-alist'.
|
||
See help of `modify-frame-parameters' for more information."
|
||
(dolist (frame (frame-list))
|
||
(modify-frame-parameters frame alist))
|
||
|
||
(dolist (pair alist) ;; conses to add/replace
|
||
;; initial-frame-alist needs setting only when
|
||
;; frame-notice-user-settings is true.
|
||
(and frame-notice-user-settings
|
||
(setq initial-frame-alist
|
||
(assq-delete-all (car pair) initial-frame-alist)))
|
||
(setq default-frame-alist
|
||
(assq-delete-all (car pair) default-frame-alist))
|
||
;; Remove any similar settings from the window-system specific
|
||
;; parameters---they would override default-frame-alist.
|
||
(dolist (w window-system-default-frame-alist)
|
||
(setcdr w (assq-delete-all (car pair) (cdr w)))))
|
||
|
||
(and frame-notice-user-settings
|
||
(setq initial-frame-alist (append initial-frame-alist alist)))
|
||
(setq default-frame-alist (append default-frame-alist alist)))
|
||
|
||
(defun get-other-frame ()
|
||
"Return some frame other than the current frame.
|
||
Create one if necessary. Note that the minibuffer frame, if separate,
|
||
is not considered (see `next-frame')."
|
||
(if (equal (next-frame) (selected-frame)) (make-frame) (next-frame)))
|
||
|
||
(defun next-multiframe-window ()
|
||
"Select the next window, regardless of which frame it is on."
|
||
(interactive)
|
||
(select-window (next-window (selected-window)
|
||
(> (minibuffer-depth) 0)
|
||
0))
|
||
(select-frame-set-input-focus (selected-frame)))
|
||
|
||
(defun previous-multiframe-window ()
|
||
"Select the previous window, regardless of which frame it is on."
|
||
(interactive)
|
||
(select-window (previous-window (selected-window)
|
||
(> (minibuffer-depth) 0)
|
||
0))
|
||
(select-frame-set-input-focus (selected-frame)))
|
||
|
||
(defun window-system-for-display (display)
|
||
"Return the window system for DISPLAY.
|
||
Return nil if we don't know how to interpret DISPLAY."
|
||
;; MS-Windows doesn't know how to create a GUI frame in a -nw session.
|
||
(if (and (eq system-type 'windows-nt)
|
||
(null (window-system))
|
||
(not (daemonp)))
|
||
nil
|
||
(cl-loop for descriptor in display-format-alist
|
||
for pattern = (car descriptor)
|
||
for system = (cdr descriptor)
|
||
when (string-match-p pattern display) return system)))
|
||
|
||
(defun make-frame-on-display (display &optional parameters)
|
||
"Make a frame on display DISPLAY.
|
||
The optional argument PARAMETERS specifies additional frame parameters."
|
||
(interactive "sMake frame on display: ")
|
||
(make-frame (cons (cons 'display display) parameters)))
|
||
|
||
(declare-function x-close-connection "xfns.c" (terminal))
|
||
|
||
(defun close-display-connection (display)
|
||
"Close the connection to a display, deleting all its associated frames.
|
||
For DISPLAY, specify either a frame or a display name (a string).
|
||
If DISPLAY is nil, that stands for the selected frame's display."
|
||
(interactive
|
||
(list
|
||
(let* ((default (frame-parameter nil 'display))
|
||
(display (completing-read
|
||
(format "Close display (default %s): " default)
|
||
(delete-dups
|
||
(mapcar (lambda (frame)
|
||
(frame-parameter frame 'display))
|
||
(frame-list)))
|
||
nil t nil nil
|
||
default)))
|
||
(if (zerop (length display)) default display))))
|
||
(let ((frames (delq nil
|
||
(mapcar (lambda (frame)
|
||
(if (equal display
|
||
(frame-parameter frame 'display))
|
||
frame))
|
||
(frame-list)))))
|
||
(if (and (consp frames)
|
||
(not (y-or-n-p (if (cdr frames)
|
||
(format "Delete %s frames? " (length frames))
|
||
(format "Delete %s ? " (car frames))))))
|
||
(error "Abort!")
|
||
(mapc 'delete-frame frames)
|
||
(x-close-connection display))))
|
||
|
||
(defun make-frame-command ()
|
||
"Make a new frame, on the same terminal as the selected frame.
|
||
If the terminal is a text-only terminal, this also selects the
|
||
new frame."
|
||
(interactive)
|
||
(if (display-graphic-p)
|
||
(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-hook nil
|
||
"Functions to run after a frame's font has been changed.")
|
||
|
||
;; Alias, kept temporarily.
|
||
(define-obsolete-function-alias 'new-frame 'make-frame "22.1")
|
||
|
||
(defvar frame-inherited-parameters '()
|
||
"Parameters `make-frame' copies from the `selected-frame' to the new frame.")
|
||
|
||
(defvar x-display-name)
|
||
|
||
(defun make-frame (&optional parameters)
|
||
"Return a newly created frame displaying the current buffer.
|
||
Optional argument PARAMETERS is an alist of frame 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 specify
|
||
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.
|
||
|
||
(window-system . nil) The frame should be displayed on a terminal device.
|
||
(window-system . x) The frame should be displayed in an X window.
|
||
|
||
(display . \":0\") The frame should appear on display :0.
|
||
|
||
(terminal . TERMINAL) The frame should use the terminal object TERMINAL.
|
||
|
||
In addition, any parameter specified in `default-frame-alist',
|
||
but not present in PARAMETERS, is applied.
|
||
|
||
Before creating the frame (via `frame-creation-function-alist'),
|
||
this function runs the hook `before-make-frame-hook'. After
|
||
creating the frame, it runs the hook `after-make-frame-functions'
|
||
with one arg, the newly created frame.
|
||
|
||
If a display parameter is supplied and a window-system is not,
|
||
guess the window-system from the display.
|
||
|
||
On graphical displays, this function does not itself make the new
|
||
frame the selected frame. However, the window system may select
|
||
the new frame according to its own rules."
|
||
(interactive)
|
||
(let* ((display (cdr (assq 'display parameters)))
|
||
(w (cond
|
||
((assq 'terminal parameters)
|
||
(let ((type (terminal-live-p
|
||
(cdr (assq 'terminal parameters)))))
|
||
(cond
|
||
((eq t type) nil)
|
||
((null type) (error "Terminal %s does not exist"
|
||
(cdr (assq 'terminal parameters))))
|
||
(t type))))
|
||
((assq 'window-system parameters)
|
||
(cdr (assq 'window-system parameters)))
|
||
(display
|
||
(or (window-system-for-display display)
|
||
(error "Don't know how to interpret display %S"
|
||
display)))
|
||
(t window-system)))
|
||
(oldframe (selected-frame))
|
||
(params parameters)
|
||
frame)
|
||
|
||
(unless (get w 'window-system-initialized)
|
||
(let ((window-system w)) ;Hack attack!
|
||
(window-system-initialization display))
|
||
(setq x-display-name display)
|
||
(put w 'window-system-initialized t))
|
||
|
||
;; Add parameters from `window-system-default-frame-alist'.
|
||
(dolist (p (cdr (assq w window-system-default-frame-alist)))
|
||
(unless (assq (car p) params)
|
||
(push p params)))
|
||
;; Add parameters from `default-frame-alist'.
|
||
(dolist (p default-frame-alist)
|
||
(unless (assq (car p) params)
|
||
(push p params)))
|
||
;; Now make the frame.
|
||
(run-hooks 'before-make-frame-hook)
|
||
|
||
;; (setq frame-size-history '(1000))
|
||
|
||
(setq frame (let ((window-system w)) ;Hack attack!
|
||
(frame-creation-function params)))
|
||
(normal-erase-is-backspace-setup-frame frame)
|
||
;; Inherit the original frame's parameters.
|
||
(dolist (param frame-inherited-parameters)
|
||
(unless (assq param parameters) ;Overridden by explicit parameters.
|
||
(let ((val (frame-parameter oldframe param)))
|
||
(when val (set-frame-parameter frame param val)))))
|
||
|
||
(when (numberp (car frame-size-history))
|
||
(setq frame-size-history
|
||
(cons (1- (car frame-size-history))
|
||
(cons (list frame "MAKE-FRAME")
|
||
(cdr frame-size-history)))))
|
||
|
||
;; We can run `window-configuration-change-hook' for this frame now.
|
||
(frame-after-make-frame frame t)
|
||
(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))
|
||
(list frames))
|
||
(while (consp frames)
|
||
(unless (funcall predicate (car frames))
|
||
(setcar frames nil))
|
||
(setq frames (cdr frames)))
|
||
(delq nil list)))
|
||
|
||
(defun minibuffer-frame-list ()
|
||
"Return a list of all frames with their own minibuffers."
|
||
(filtered-frame-list
|
||
(lambda (frame)
|
||
(eq frame (window-frame (minibuffer-window frame))))))
|
||
|
||
;; Used to be called `terminal-id' in termdev.el.
|
||
(defun get-device-terminal (device)
|
||
"Return the terminal corresponding to DEVICE.
|
||
DEVICE can be a terminal, a frame, nil (meaning the selected frame's terminal),
|
||
the name of an X display device (HOST.SERVER.SCREEN) or a tty device file."
|
||
(cond
|
||
((or (null device) (framep device))
|
||
(frame-terminal device))
|
||
((stringp device)
|
||
(let ((f (car (filtered-frame-list
|
||
(lambda (frame)
|
||
(or (equal (frame-parameter frame 'display) device)
|
||
(equal (frame-parameter frame 'tty) device)))))))
|
||
(or f (error "Display %s does not exist" device))
|
||
(frame-terminal f)))
|
||
((terminal-live-p device) device)
|
||
(t
|
||
(error "Invalid argument %s in `get-device-terminal'" device))))
|
||
|
||
(defun frames-on-display-list (&optional device)
|
||
"Return a list of all frames on DEVICE.
|
||
|
||
DEVICE should be a terminal, a frame,
|
||
or a name of an X display or tty (a string of the form
|
||
HOST:SERVER.SCREEN).
|
||
|
||
If DEVICE is omitted or nil, it defaults to the selected
|
||
frame's terminal device."
|
||
(let* ((terminal (get-device-terminal device))
|
||
(func #'(lambda (frame)
|
||
(eq (frame-terminal frame) terminal))))
|
||
(filtered-frame-list func)))
|
||
|
||
(defun framep-on-display (&optional terminal)
|
||
"Return the type of frames on TERMINAL.
|
||
TERMINAL may be a terminal id, a display name or a frame. If it
|
||
is a frame, its type is returned. If TERMINAL is omitted or nil,
|
||
it defaults to the selected frame's terminal device. All frames
|
||
on a given display are of the same type."
|
||
(or (terminal-live-p terminal)
|
||
(framep terminal)
|
||
(framep (car (frames-on-display-list terminal)))))
|
||
|
||
(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))
|
||
|
||
(declare-function x-focus-frame "frame.c" (frame))
|
||
|
||
(defun select-frame-set-input-focus (frame &optional norecord)
|
||
"Select FRAME, raise it, and set input focus, if possible.
|
||
If `mouse-autoselect-window' is non-nil, also move mouse pointer
|
||
to FRAME's selected window. Otherwise, if `focus-follows-mouse'
|
||
is non-nil, move mouse cursor to FRAME.
|
||
|
||
Optional argument NORECORD means to neither change the order of
|
||
recently selected windows nor the buffer list."
|
||
(select-frame frame norecord)
|
||
(raise-frame frame)
|
||
;; Ensure, if possible, that FRAME gets input focus.
|
||
(when (memq (window-system frame) '(x w32 ns))
|
||
(x-focus-frame frame))
|
||
;; Move mouse cursor if necessary.
|
||
(cond
|
||
(mouse-autoselect-window
|
||
(let ((edges (window-inside-edges (frame-selected-window frame))))
|
||
;; Move mouse cursor into FRAME's selected window to avoid that
|
||
;; Emacs mouse-autoselects another window.
|
||
(set-mouse-position frame (nth 2 edges) (nth 1 edges))))
|
||
(focus-follows-mouse
|
||
;; Move mouse cursor into FRAME to avoid that another frame gets
|
||
;; selected by the window manager.
|
||
(set-mouse-position frame (1- (frame-width frame)) 0))))
|
||
|
||
(defun other-frame (arg)
|
||
"Select the ARGth different visible frame on current display, 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.
|
||
|
||
To make this command work properly, you must tell Emacs
|
||
how the system (or the window manager) generally handles
|
||
focus-switching between windows. If moving the mouse onto a window
|
||
selects it (gives it focus), set `focus-follows-mouse' to t.
|
||
Otherwise, that variable should be nil."
|
||
(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-set-input-focus frame)))
|
||
|
||
(defun iconify-or-deiconify-frame ()
|
||
"Iconify the selected frame, or deiconify if it's currently an icon."
|
||
(interactive)
|
||
(if (eq (cdr (assq 'visibility (frame-parameters))) t)
|
||
(iconify-frame)
|
||
(make-frame-visible)))
|
||
|
||
(defun suspend-frame ()
|
||
"Do whatever is right to suspend the current frame.
|
||
Calls `suspend-emacs' if invoked from the controlling tty device,
|
||
`suspend-tty' from a secondary tty device, and
|
||
`iconify-or-deiconify-frame' from an X frame."
|
||
(interactive)
|
||
(let ((type (framep (selected-frame))))
|
||
(cond
|
||
((memq type '(x ns w32)) (iconify-or-deiconify-frame))
|
||
((eq type t)
|
||
(if (controlling-tty-p)
|
||
(suspend-emacs)
|
||
(suspend-tty)))
|
||
(t (suspend-emacs)))))
|
||
|
||
(defun make-frame-names-alist ()
|
||
;; Only consider the frames on the same display.
|
||
(let* ((current-frame (selected-frame))
|
||
(falist
|
||
(cons
|
||
(cons (frame-parameter current-frame 'name) current-frame) nil))
|
||
(frame (next-frame nil 0)))
|
||
(while (not (eq frame current-frame))
|
||
(progn
|
||
(push (cons (frame-parameter frame 'name) frame) falist)
|
||
(setq frame (next-frame frame 0))))
|
||
falist))
|
||
|
||
(defvar frame-name-history nil)
|
||
(defun select-frame-by-name (name)
|
||
"Select the frame on the current terminal 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))))
|
||
(if frame
|
||
(select-frame-set-input-focus frame)
|
||
(error "There is no frame named `%s'" name))))
|
||
|
||
|
||
;;;; Background mode.
|
||
|
||
(defcustom frame-background-mode nil
|
||
"The brightness of the background.
|
||
Set this to the symbol `dark' if your background color is dark,
|
||
`light' if your background is light, or nil (automatic by default)
|
||
if you want Emacs to examine the brightness for you.
|
||
|
||
If you change this without using customize, you should use
|
||
`frame-set-background-mode' to update existing frames;
|
||
e.g. (mapc \\='frame-set-background-mode (frame-list))."
|
||
:group 'faces
|
||
:set #'(lambda (var value)
|
||
(set-default var value)
|
||
(mapc 'frame-set-background-mode (frame-list)))
|
||
:initialize 'custom-initialize-changed
|
||
:type '(choice (const dark)
|
||
(const light)
|
||
(const :tag "automatic" nil)))
|
||
|
||
(declare-function x-get-resource "frame.c"
|
||
(attribute class &optional component subclass))
|
||
|
||
;; Only used if window-system is not null.
|
||
(declare-function x-display-grayscale-p "xfns.c" (&optional terminal))
|
||
|
||
(defvar inhibit-frame-set-background-mode nil)
|
||
|
||
(defun frame-set-background-mode (frame &optional keep-face-specs)
|
||
"Set up display-dependent faces on FRAME.
|
||
Display-dependent faces are those which have different definitions
|
||
according to the `background-mode' and `display-type' frame parameters.
|
||
|
||
If optional arg KEEP-FACE-SPECS is non-nil, don't recalculate
|
||
face specs for the new background mode."
|
||
(unless inhibit-frame-set-background-mode
|
||
(let* ((frame-default-bg-mode (frame-terminal-default-bg-mode frame))
|
||
(bg-color (frame-parameter frame 'background-color))
|
||
(tty-type (tty-type frame))
|
||
(default-bg-mode
|
||
(if (or (window-system frame)
|
||
(and tty-type
|
||
(string-match "^\\(xterm\\|\\rxvt\\|dtterm\\|eterm\\)"
|
||
tty-type)))
|
||
'light
|
||
'dark))
|
||
(non-default-bg-mode (if (eq default-bg-mode 'light) 'dark 'light))
|
||
(bg-mode
|
||
(cond (frame-default-bg-mode)
|
||
((equal bg-color "unspecified-fg") ; inverted colors
|
||
non-default-bg-mode)
|
||
((not (color-values bg-color frame))
|
||
default-bg-mode)
|
||
((>= (apply '+ (color-values bg-color frame))
|
||
;; Just looking at the screen, colors whose
|
||
;; values add up to .6 of the white total
|
||
;; still look dark to me.
|
||
(* (apply '+ (color-values "white" frame)) .6))
|
||
'light)
|
||
(t 'dark)))
|
||
(display-type
|
||
(cond ((null (window-system frame))
|
||
(if (tty-display-color-p frame) 'color 'mono))
|
||
((display-color-p frame)
|
||
'color)
|
||
((x-display-grayscale-p frame)
|
||
'grayscale)
|
||
(t 'mono)))
|
||
(old-bg-mode
|
||
(frame-parameter frame 'background-mode))
|
||
(old-display-type
|
||
(frame-parameter frame 'display-type)))
|
||
|
||
(unless (and (eq bg-mode old-bg-mode) (eq display-type old-display-type))
|
||
(let ((locally-modified-faces nil)
|
||
;; Prevent face-spec-recalc from calling this function
|
||
;; again, resulting in a loop (bug#911).
|
||
(inhibit-frame-set-background-mode t)
|
||
(params (list (cons 'background-mode bg-mode)
|
||
(cons 'display-type display-type))))
|
||
(if keep-face-specs
|
||
(modify-frame-parameters frame params)
|
||
;; If we are recomputing face specs, first collect a list
|
||
;; of faces that don't match their face-specs. These are
|
||
;; the faces modified on FRAME, and we avoid changing them
|
||
;; below. Use a negative list to avoid consing (we assume
|
||
;; most faces are unmodified).
|
||
(dolist (face (face-list))
|
||
(and (not (get face 'face-override-spec))
|
||
(not (face-spec-match-p face
|
||
(face-user-default-spec face)
|
||
(selected-frame)))
|
||
(push face locally-modified-faces)))
|
||
;; Now change to the new frame parameters
|
||
(modify-frame-parameters frame params)
|
||
;; For all unmodified named faces, choose face specs
|
||
;; matching the new frame parameters.
|
||
(dolist (face (face-list))
|
||
(unless (memq face locally-modified-faces)
|
||
(face-spec-recalc face frame)))))))))
|
||
|
||
(defun frame-terminal-default-bg-mode (frame)
|
||
"Return the default background mode of FRAME.
|
||
This checks the `frame-background-mode' variable, the X resource
|
||
named \"backgroundMode\" (if FRAME is an X frame), and finally
|
||
the `background-mode' terminal parameter."
|
||
(or frame-background-mode
|
||
(let ((bg-resource
|
||
(and (window-system frame)
|
||
(x-get-resource "backgroundMode" "BackgroundMode"))))
|
||
(if bg-resource
|
||
(intern (downcase bg-resource))))
|
||
(terminal-parameter frame 'background-mode)))
|
||
|
||
|
||
;;;; 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 (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.
|
||
However, this function does not restore deleted frames.
|
||
|
||
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)
|
||
(dolist (frame (frame-list))
|
||
(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))
|
||
(name (assq 'name parms))
|
||
(explicit-name (cdr (assq 'explicit-name parms))))
|
||
(when mini (setq parms (delq mini parms)))
|
||
;; Leave name in iff it was set explicitly.
|
||
;; This should fix the behavior reported in
|
||
;; http://lists.gnu.org/archive/html/emacs-devel/2007-08/msg01632.html
|
||
(when (and name (not explicit-name))
|
||
(setq parms (delq name parms)))
|
||
parms))
|
||
(set-window-configuration (nth 2 parameters)))
|
||
(setq frames-to-delete (cons frame frames-to-delete)))))
|
||
(mapc (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.
|
||
'iconify-frame
|
||
'delete-frame)
|
||
frames-to-delete)))
|
||
|
||
;;;; Convenience functions for accessing and interactively changing
|
||
;;;; frame parameters.
|
||
|
||
(defun frame-height (&optional frame)
|
||
"Return number of lines available for display on FRAME.
|
||
If FRAME is omitted, describe the currently selected frame.
|
||
Exactly what is included in the return value depends on the
|
||
window-system and toolkit in use - see `frame-pixel-height' for
|
||
more details. The lines are in units of the default font height.
|
||
|
||
The result is roughly related to the frame pixel height via
|
||
height in pixels = height in lines * `frame-char-height'.
|
||
However, this is only approximate, and is complicated e.g. by the
|
||
fact that individual window lines and menu bar lines can have
|
||
differing font heights."
|
||
(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))))
|
||
|
||
(declare-function x-list-fonts "xfaces.c"
|
||
(pattern &optional face frame maximum width))
|
||
|
||
(define-obsolete-function-alias 'set-default-font 'set-frame-font "23.1")
|
||
|
||
(defun set-frame-font (font &optional keep-size frames)
|
||
"Set the default font to FONT.
|
||
When called interactively, prompt for the name of a font, and use
|
||
that font on the selected frame. When called from Lisp, FONT
|
||
should be a font name (a string), a font object, font entity, or
|
||
font spec.
|
||
|
||
If KEEP-SIZE is nil, keep the number of frame lines and columns
|
||
fixed. If KEEP-SIZE is non-nil (or with a prefix argument), try
|
||
to keep the current frame size fixed (in pixels) by adjusting the
|
||
number of lines and columns.
|
||
|
||
If FRAMES is nil, apply the font to the selected frame only.
|
||
If FRAMES is non-nil, it should be a list of frames to act upon,
|
||
or t meaning all existing graphical frames.
|
||
Also, if FRAMES is non-nil, alter the user's Customization settings
|
||
as though the font-related attributes of the `default' face had been
|
||
\"set in this session\", so that the font is applied to future frames."
|
||
(interactive
|
||
(let* ((completion-ignore-case t)
|
||
(font (completing-read "Font name: "
|
||
;; x-list-fonts will fail with an error
|
||
;; if this frame doesn't support fonts.
|
||
(x-list-fonts "*" nil (selected-frame))
|
||
nil nil nil nil
|
||
(frame-parameter nil 'font))))
|
||
(list font current-prefix-arg nil)))
|
||
(when (or (stringp font) (fontp font))
|
||
(let* ((this-frame (selected-frame))
|
||
;; FRAMES nil means affect the selected frame.
|
||
(frame-list (cond ((null frames)
|
||
(list this-frame))
|
||
((eq frames t)
|
||
(frame-list))
|
||
(t frames)))
|
||
height width)
|
||
(dolist (f frame-list)
|
||
(when (display-multi-font-p f)
|
||
(if keep-size
|
||
(setq height (* (frame-parameter f 'height)
|
||
(frame-char-height f))
|
||
width (* (frame-parameter f 'width)
|
||
(frame-char-width f))))
|
||
;; When set-face-attribute is called for :font, Emacs
|
||
;; guesses the best font according to other face attributes
|
||
;; (:width, :weight, etc.) so reset them too (Bug#2476).
|
||
(set-face-attribute 'default f
|
||
:width 'normal :weight 'normal
|
||
:slant 'normal :font font)
|
||
(if keep-size
|
||
(modify-frame-parameters
|
||
f
|
||
(list (cons 'height (round height (frame-char-height f)))
|
||
(cons 'width (round width (frame-char-width f))))))))
|
||
(when frames
|
||
;; Alter the user's Custom setting of the `default' face, but
|
||
;; only for font-related attributes.
|
||
(let ((specs (cadr (assq 'user (get 'default 'theme-face))))
|
||
(attrs '(:family :foundry :slant :weight :height :width))
|
||
(new-specs nil))
|
||
(if (null specs) (setq specs '((t nil))))
|
||
(dolist (spec specs)
|
||
;; Each SPEC has the form (DISPLAY ATTRIBUTE-PLIST)
|
||
(let ((display (nth 0 spec))
|
||
(plist (copy-tree (nth 1 spec))))
|
||
;; Alter only DISPLAY conditions matching this frame.
|
||
(when (or (memq display '(t default))
|
||
(face-spec-set-match-display display this-frame))
|
||
(dolist (attr attrs)
|
||
(setq plist (plist-put plist attr
|
||
(face-attribute 'default attr)))))
|
||
(push (list display plist) new-specs)))
|
||
(setq new-specs (nreverse new-specs))
|
||
(put 'default 'customized-face new-specs)
|
||
(custom-push-theme 'theme-face 'default 'user 'set new-specs)
|
||
(put 'default 'face-modified nil))))
|
||
(run-hooks 'after-setting-font-hook 'after-setting-font-hooks)))
|
||
|
||
(defun set-frame-parameter (frame parameter value)
|
||
"Set frame parameter PARAMETER to VALUE on FRAME.
|
||
If FRAME is nil, it defaults to the selected frame.
|
||
See `modify-frame-parameters'."
|
||
(modify-frame-parameters frame (list (cons parameter value))))
|
||
|
||
(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 (read-color "Background color: ")))
|
||
(modify-frame-parameters (selected-frame)
|
||
(list (cons 'background-color color-name)))
|
||
(or window-system
|
||
(face-set-after-frame-default (selected-frame)
|
||
(list
|
||
(cons 'background-color color-name)
|
||
;; Pass the foreground-color as
|
||
;; well, if defined, to avoid
|
||
;; losing it when faces are reset
|
||
;; to their defaults.
|
||
(assq 'foreground-color
|
||
(frame-parameters))))))
|
||
|
||
(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 (read-color "Foreground color: ")))
|
||
(modify-frame-parameters (selected-frame)
|
||
(list (cons 'foreground-color color-name)))
|
||
(or window-system
|
||
(face-set-after-frame-default (selected-frame)
|
||
(list
|
||
(cons 'foreground-color color-name)
|
||
;; Pass the background-color as
|
||
;; well, if defined, to avoid
|
||
;; losing it when faces are reset
|
||
;; to their defaults.
|
||
(assq 'background-color
|
||
(frame-parameters))))))
|
||
|
||
(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.
|
||
This works by setting the `cursor-color' frame parameter on the
|
||
selected frame.
|
||
|
||
You can also set the text cursor color, for all frames, by
|
||
customizing the `cursor' face."
|
||
(interactive (list (read-color "Cursor 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 (read-color "Mouse 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 (read-color "Border color: ")))
|
||
(modify-frame-parameters (selected-frame)
|
||
(list (cons 'border-color color-name))))
|
||
|
||
(define-minor-mode auto-raise-mode
|
||
"Toggle whether or not selected frames should auto-raise.
|
||
With a prefix argument ARG, enable Auto Raise mode if ARG is
|
||
positive, and disable it otherwise. If called from Lisp, enable
|
||
the mode if ARG is omitted or nil.
|
||
|
||
Auto Raise mode does nothing under most window managers, which
|
||
switch focus on mouse clicks. It only has an effect if your
|
||
window manager switches focus on mouse movement (in which case
|
||
you should also change `focus-follows-mouse' to t). Then,
|
||
enabling Auto Raise mode causes any graphical Emacs frame which
|
||
acquires focus to be automatically raised.
|
||
|
||
Note that this minor mode controls Emacs's own auto-raise
|
||
feature. Window managers that switch focus on mouse movement
|
||
often have their own auto-raise feature."
|
||
:variable (frame-parameter nil 'auto-raise)
|
||
(if (frame-parameter nil 'auto-raise)
|
||
(raise-frame)))
|
||
|
||
(define-minor-mode auto-lower-mode
|
||
"Toggle whether or not the selected frame should auto-lower.
|
||
With a prefix argument ARG, enable Auto Lower mode if ARG is
|
||
positive, and disable it otherwise. If called from Lisp, enable
|
||
the mode if ARG is omitted or nil.
|
||
|
||
Auto Lower mode does nothing under most window managers, which
|
||
switch focus on mouse clicks. It only has an effect if your
|
||
window manager switches focus on mouse movement (in which case
|
||
you should also change `focus-follows-mouse' to t). Then,
|
||
enabling Auto Lower Mode causes any graphical Emacs frame which
|
||
loses focus to be automatically lowered.
|
||
|
||
Note that this minor mode controls Emacs's own auto-lower
|
||
feature. Window managers that switch focus on mouse movement
|
||
often have their own features for raising or lowering frames."
|
||
:variable (frame-parameter nil 'auto-lower))
|
||
|
||
(defun set-frame-name (name)
|
||
"Set the name of the selected frame to NAME.
|
||
When called interactively, prompt for the name of the frame.
|
||
On text terminals, the frame name is displayed on the mode line.
|
||
On graphical displays, it is displayed on the frame's title bar."
|
||
(interactive "sFrame name: ")
|
||
(modify-frame-parameters (selected-frame)
|
||
(list (cons 'name name))))
|
||
|
||
(defun frame-current-scroll-bars (&optional frame)
|
||
"Return the current scroll-bar types for frame FRAME.
|
||
Value is a cons (VERTICAL . HORIZ0NTAL) where VERTICAL specifies
|
||
the current location of the vertical scroll-bars (`left', `right'
|
||
or nil), and HORIZONTAL specifies the current location of the
|
||
horizontal scroll bars (`bottom' or nil). FRAME must specify a
|
||
live frame and defaults to the selected one."
|
||
(let* ((frame (window-normalize-frame frame))
|
||
(vertical (frame-parameter frame 'vertical-scroll-bars))
|
||
(horizontal (frame-parameter frame 'horizontal-scroll-bars)))
|
||
(unless (memq vertical '(left right nil))
|
||
(setq vertical default-frame-scroll-bars))
|
||
(cons vertical (and horizontal 'bottom))))
|
||
|
||
(declare-function x-frame-geometry "xfns.c" (&optional frame))
|
||
(declare-function w32-frame-geometry "w32fns.c" (&optional frame))
|
||
(declare-function ns-frame-geometry "nsfns.m" (&optional frame))
|
||
|
||
(defun frame-geometry (&optional frame)
|
||
"Return geometric attributes of FRAME.
|
||
FRAME must be a live frame and defaults to the selected one. The return
|
||
value is an association list of the attributes listed below. All height
|
||
and width values are in pixels.
|
||
|
||
`outer-position' is a cons of the outer left and top edges of FRAME
|
||
relative to the origin - the position (0, 0) - of FRAME's display.
|
||
|
||
`outer-size' is a cons of the outer width and height of FRAME. The
|
||
outer size includes the title bar and the external borders as well as
|
||
any menu and/or tool bar of frame.
|
||
|
||
`external-border-size' is a cons of the horizontal and vertical width of
|
||
FRAME's external borders as supplied by the window manager.
|
||
|
||
`title-bar-size' is a cons of the width and height of the title bar of
|
||
FRAME as supplied by the window manager. If both of them are zero,
|
||
FRAME has no title bar. If only the width is zero, Emacs was not
|
||
able to retrieve the width information.
|
||
|
||
`menu-bar-external', if non-nil, means the menu bar is external (never
|
||
included in the inner edges of FRAME).
|
||
|
||
`menu-bar-size' is a cons of the width and height of the menu bar of
|
||
FRAME.
|
||
|
||
`tool-bar-external', if non-nil, means the tool bar is external (never
|
||
included in the inner edges of FRAME).
|
||
|
||
`tool-bar-position' tells on which side the tool bar on FRAME is and can
|
||
be one of `left', `top', `right' or `bottom'. If this is nil, FRAME
|
||
has no tool bar.
|
||
|
||
`tool-bar-size' is a cons of the width and height of the tool bar of
|
||
FRAME.
|
||
|
||
`internal-border-width' is the width of the internal border of
|
||
FRAME."
|
||
(let* ((frame (window-normalize-frame frame))
|
||
(frame-type (framep-on-display frame)))
|
||
(cond
|
||
((eq frame-type 'x)
|
||
(x-frame-geometry frame))
|
||
((eq frame-type 'w32)
|
||
(w32-frame-geometry frame))
|
||
((eq frame-type 'ns)
|
||
(ns-frame-geometry frame))
|
||
(t
|
||
(list
|
||
'(outer-position 0 . 0)
|
||
(cons 'outer-size (cons (frame-width frame) (frame-height frame)))
|
||
'(external-border-size 0 . 0)
|
||
'(title-bar-size 0 . 0)
|
||
'(menu-bar-external . nil)
|
||
(let ((menu-bar-lines (frame-parameter frame 'menu-bar-lines)))
|
||
(cons 'menu-bar-size
|
||
(if menu-bar-lines
|
||
(cons (frame-width frame) 1)
|
||
1 0)))
|
||
'(tool-bar-external . nil)
|
||
'(tool-bar-position . nil)
|
||
'(tool-bar-size 0 . 0)
|
||
(cons 'internal-border-width
|
||
(frame-parameter frame 'internal-border-width)))))))
|
||
|
||
(defun frame--size-history (&optional frame)
|
||
"Print history of resize operations for FRAME.
|
||
Print prettified version of `frame-size-history' into a buffer
|
||
called *frame-size-history*. Optional argument FRAME denotes the
|
||
frame whose history will be printed. FRAME defaults to the
|
||
selected frame."
|
||
(let ((history (reverse frame-size-history))
|
||
entry)
|
||
(setq frame (window-normalize-frame frame))
|
||
(with-current-buffer (get-buffer-create "*frame-size-history*")
|
||
(erase-buffer)
|
||
(insert (format "Frame size history of %s\n" frame))
|
||
(while (listp (setq entry (pop history)))
|
||
(when (eq (car entry) frame)
|
||
(pop entry)
|
||
(insert (format "%s" (pop entry)))
|
||
(move-to-column 24 t)
|
||
(while entry
|
||
(insert (format " %s" (pop entry))))
|
||
(insert "\n"))))))
|
||
|
||
(declare-function x-frame-edges "xfns.c" (&optional frame type))
|
||
(declare-function w32-frame-edges "w32fns.c" (&optional frame type))
|
||
(declare-function ns-frame-edges "nsfns.m" (&optional frame type))
|
||
|
||
(defun frame-edges (&optional frame type)
|
||
"Return coordinates of FRAME's edges.
|
||
FRAME must be a live frame and defaults to the selected one. The
|
||
list returned has the form (LEFT TOP RIGHT BOTTOM) where all
|
||
values are in pixels relative to the origin - the position (0, 0)
|
||
- of FRAME's display. For terminal frames all values are
|
||
relative to LEFT and TOP which are both zero.
|
||
|
||
Optional argument TYPE specifies the type of the edges. TYPE
|
||
`outer-edges' means to return the outer edges of FRAME. TYPE
|
||
`native-edges' (or nil) means to return the native edges of
|
||
FRAME. TYPE `inner-edges' means to return the inner edges of
|
||
FRAME."
|
||
(let* ((frame (window-normalize-frame frame))
|
||
(frame-type (framep-on-display frame)))
|
||
(cond
|
||
((eq frame-type 'x)
|
||
(x-frame-edges frame type))
|
||
((eq frame-type 'w32)
|
||
(w32-frame-edges frame type))
|
||
((eq frame-type 'ns)
|
||
(ns-frame-edges frame type))
|
||
(t
|
||
(list 0 0 (frame-width frame) (frame-height frame))))))
|
||
|
||
(declare-function w32-mouse-absolute-pixel-position "w32fns.c")
|
||
(declare-function x-mouse-absolute-pixel-position "xfns.c")
|
||
|
||
(defun mouse-absolute-pixel-position ()
|
||
"Return absolute position of mouse cursor in pixels.
|
||
The position is returned as a cons cell (X . Y) of the
|
||
coordinates of the mouse cursor position in pixels relative to a
|
||
position (0, 0) of the selected frame's terminal."
|
||
(let ((frame-type (framep-on-display)))
|
||
(cond
|
||
((eq frame-type 'x)
|
||
(x-mouse-absolute-pixel-position))
|
||
((eq frame-type 'w32)
|
||
(w32-mouse-absolute-pixel-position))
|
||
(t
|
||
(cons 0 0)))))
|
||
|
||
(declare-function w32-set-mouse-absolute-pixel-position "w32fns.c" (x y))
|
||
(declare-function x-set-mouse-absolute-pixel-position "xfns.c" (x y))
|
||
|
||
(defun set-mouse-absolute-pixel-position (x y)
|
||
"Move mouse pointer to absolute pixel position (X, Y).
|
||
The coordinates X and Y are interpreted in pixels relative to a
|
||
position (0, 0) of the selected frame's terminal."
|
||
(let ((frame-type (framep-on-display)))
|
||
(cond
|
||
((eq frame-type 'x)
|
||
(x-set-mouse-absolute-pixel-position x y))
|
||
((eq frame-type 'w32)
|
||
(w32-set-mouse-absolute-pixel-position x y)))))
|
||
|
||
(defun frame-monitor-attributes (&optional frame)
|
||
"Return the attributes of the physical monitor dominating FRAME.
|
||
If FRAME is omitted or nil, describe the currently selected frame.
|
||
|
||
A frame is dominated by a physical monitor when either the
|
||
largest area of the frame resides in the monitor, or the monitor
|
||
is the closest to the frame if the frame does not intersect any
|
||
physical monitors.
|
||
|
||
See `display-monitor-attributes-list' for the list of attribute
|
||
keys and their meanings."
|
||
(or frame (setq frame (selected-frame)))
|
||
(cl-loop for attributes in (display-monitor-attributes-list frame)
|
||
for frames = (cdr (assq 'frames attributes))
|
||
if (memq frame frames) return attributes))
|
||
|
||
|
||
;;;; Frame/display capabilities.
|
||
|
||
(declare-function msdos-mouse-p "dosfns.c")
|
||
|
||
(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 frame-type 'w32)
|
||
(with-no-warnings
|
||
(> w32-num-mouse-buttons 0)))
|
||
((memq frame-type '(x ns))
|
||
t) ;; We assume X and NeXTstep *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)
|
||
;; No way to check whether a w32 console has a mouse, assume
|
||
;; it always does.
|
||
(boundp 'w32-use-full-screen-buffer))))))
|
||
|
||
(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."
|
||
(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 ns)))))
|
||
|
||
(defun display-images-p (&optional display)
|
||
"Return non-nil if DISPLAY can display images.
|
||
|
||
DISPLAY can be a display name, a frame, or nil (meaning the selected
|
||
frame's display)."
|
||
(and (display-graphic-p display)
|
||
(fboundp 'image-mask-p)
|
||
(fboundp 'image-size)))
|
||
|
||
(defalias 'display-multi-frame-p 'display-graphic-p)
|
||
(defalias 'display-multi-font-p 'display-graphic-p)
|
||
|
||
(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 `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-DOS frames support selections when Emacs runs inside
|
||
;; a Windows DOS Box.
|
||
(with-no-warnings
|
||
(not (null dos-windows-version))))
|
||
((memq frame-type '(x w32 ns))
|
||
t)
|
||
(t
|
||
nil))))
|
||
|
||
(declare-function x-display-screens "xfns.c" (&optional terminal))
|
||
|
||
(defun display-screens (&optional display)
|
||
"Return the number of screens associated with DISPLAY.
|
||
DISPLAY should be either a frame or a display name (a string).
|
||
If DISPLAY is omitted or nil, it defaults to the selected frame's display."
|
||
(let ((frame-type (framep-on-display display)))
|
||
(cond
|
||
((memq frame-type '(x w32 ns))
|
||
(x-display-screens display))
|
||
(t
|
||
1))))
|
||
|
||
(declare-function x-display-pixel-height "xfns.c" (&optional terminal))
|
||
|
||
(defun display-pixel-height (&optional display)
|
||
"Return the height of DISPLAY's screen in pixels.
|
||
DISPLAY can be a display name or a frame.
|
||
If DISPLAY is omitted or nil, it defaults to the selected frame's display.
|
||
|
||
For character terminals, each character counts as a single pixel.
|
||
|
||
For graphical terminals, note that on \"multi-monitor\" setups this
|
||
refers to the pixel height for all physical monitors associated
|
||
with DISPLAY. To get information for each physical monitor, use
|
||
`display-monitor-attributes-list'."
|
||
(let ((frame-type (framep-on-display display)))
|
||
(cond
|
||
((memq frame-type '(x w32 ns))
|
||
(x-display-pixel-height display))
|
||
(t
|
||
(frame-height (if (framep display) display (selected-frame)))))))
|
||
|
||
(declare-function x-display-pixel-width "xfns.c" (&optional terminal))
|
||
|
||
(defun display-pixel-width (&optional display)
|
||
"Return the width of DISPLAY's screen in pixels.
|
||
DISPLAY can be a display name or a frame.
|
||
If DISPLAY is omitted or nil, it defaults to the selected frame's display.
|
||
|
||
For character terminals, each character counts as a single pixel.
|
||
|
||
For graphical terminals, note that on \"multi-monitor\" setups this
|
||
refers to the pixel width for all physical monitors associated
|
||
with DISPLAY. To get information for each physical monitor, use
|
||
`display-monitor-attributes-list'."
|
||
(let ((frame-type (framep-on-display display)))
|
||
(cond
|
||
((memq frame-type '(x w32 ns))
|
||
(x-display-pixel-width display))
|
||
(t
|
||
(frame-width (if (framep display) display (selected-frame)))))))
|
||
|
||
(defcustom display-mm-dimensions-alist nil
|
||
"Alist for specifying screen dimensions in millimeters.
|
||
The functions `display-mm-height' and `display-mm-width' consult
|
||
this list before asking the system.
|
||
|
||
Each element has the form (DISPLAY . (WIDTH . HEIGHT)), e.g.
|
||
\(\":0.0\" . (287 . 215)).
|
||
|
||
If `display' is t, it specifies dimensions for all graphical displays
|
||
not explicitly specified."
|
||
:version "22.1"
|
||
:type '(alist :key-type (choice (string :tag "Display name")
|
||
(const :tag "Default" t))
|
||
:value-type (cons :tag "Dimensions"
|
||
(integer :tag "Width")
|
||
(integer :tag "Height")))
|
||
:group 'frames)
|
||
|
||
(declare-function x-display-mm-height "xfns.c" (&optional terminal))
|
||
|
||
(defun display-mm-height (&optional display)
|
||
"Return the height of DISPLAY's screen in millimeters.
|
||
If the information is unavailable, this function returns nil.
|
||
DISPLAY can be a display name or a frame.
|
||
If DISPLAY is omitted or nil, it defaults to the selected frame's display.
|
||
|
||
You can override what the system thinks the result should be by
|
||
adding an entry to `display-mm-dimensions-alist'.
|
||
|
||
For graphical terminals, note that on \"multi-monitor\" setups this
|
||
refers to the height in millimeters for all physical monitors
|
||
associated with DISPLAY. To get information for each physical
|
||
monitor, use `display-monitor-attributes-list'."
|
||
(and (memq (framep-on-display display) '(x w32 ns))
|
||
(or (cddr (assoc (or display (frame-parameter nil 'display))
|
||
display-mm-dimensions-alist))
|
||
(cddr (assoc t display-mm-dimensions-alist))
|
||
(x-display-mm-height display))))
|
||
|
||
(declare-function x-display-mm-width "xfns.c" (&optional terminal))
|
||
|
||
(defun display-mm-width (&optional display)
|
||
"Return the width of DISPLAY's screen in millimeters.
|
||
If the information is unavailable, this function returns nil.
|
||
DISPLAY can be a display name or a frame.
|
||
If DISPLAY is omitted or nil, it defaults to the selected frame's display.
|
||
|
||
You can override what the system thinks the result should be by
|
||
adding an entry to `display-mm-dimensions-alist'.
|
||
|
||
For graphical terminals, note that on \"multi-monitor\" setups this
|
||
refers to the width in millimeters for all physical monitors
|
||
associated with DISPLAY. To get information for each physical
|
||
monitor, use `display-monitor-attributes-list'."
|
||
(and (memq (framep-on-display display) '(x w32 ns))
|
||
(or (cadr (assoc (or display (frame-parameter nil 'display))
|
||
display-mm-dimensions-alist))
|
||
(cadr (assoc t display-mm-dimensions-alist))
|
||
(x-display-mm-width display))))
|
||
|
||
(declare-function x-display-backing-store "xfns.c" (&optional terminal))
|
||
|
||
;; In NS port, the return value may be `buffered', `retained', or
|
||
;; `non-retained'. See src/nsfns.m.
|
||
(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.
|
||
DISPLAY can be a display name or a frame.
|
||
If DISPLAY is omitted or nil, it defaults to the selected frame's display."
|
||
(let ((frame-type (framep-on-display display)))
|
||
(cond
|
||
((memq frame-type '(x w32 ns))
|
||
(x-display-backing-store display))
|
||
(t
|
||
'not-useful))))
|
||
|
||
(declare-function x-display-save-under "xfns.c" (&optional terminal))
|
||
|
||
(defun display-save-under (&optional display)
|
||
"Return non-nil if DISPLAY's screen supports the SaveUnder feature.
|
||
DISPLAY can be a display name or a frame.
|
||
If DISPLAY is omitted or nil, it defaults to the selected frame's display."
|
||
(let ((frame-type (framep-on-display display)))
|
||
(cond
|
||
((memq frame-type '(x w32 ns))
|
||
(x-display-save-under display))
|
||
(t
|
||
'not-useful))))
|
||
|
||
(declare-function x-display-planes "xfns.c" (&optional terminal))
|
||
|
||
(defun display-planes (&optional display)
|
||
"Return the number of planes supported by DISPLAY.
|
||
DISPLAY can be a display name or a frame.
|
||
If DISPLAY is omitted or nil, it defaults to the selected frame's display."
|
||
(let ((frame-type (framep-on-display display)))
|
||
(cond
|
||
((memq frame-type '(x w32 ns))
|
||
(x-display-planes display))
|
||
((eq frame-type 'pc)
|
||
4)
|
||
(t
|
||
(truncate (log (length (tty-color-alist)) 2))))))
|
||
|
||
(declare-function x-display-color-cells "xfns.c" (&optional terminal))
|
||
|
||
(defun display-color-cells (&optional display)
|
||
"Return the number of color cells supported by DISPLAY.
|
||
DISPLAY can be a display name or a frame.
|
||
If DISPLAY is omitted or nil, it defaults to the selected frame's display."
|
||
(let ((frame-type (framep-on-display display)))
|
||
(cond
|
||
((memq frame-type '(x w32 ns))
|
||
(x-display-color-cells display))
|
||
((eq frame-type 'pc)
|
||
16)
|
||
(t
|
||
(tty-display-color-cells display)))))
|
||
|
||
(declare-function x-display-visual-class "xfns.c" (&optional terminal))
|
||
|
||
(defun display-visual-class (&optional display)
|
||
"Return 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'.
|
||
DISPLAY can be a display name or a frame.
|
||
If DISPLAY is omitted or nil, it defaults to the selected frame's display."
|
||
(let ((frame-type (framep-on-display display)))
|
||
(cond
|
||
((memq frame-type '(x w32 ns))
|
||
(x-display-visual-class display))
|
||
((and (memq frame-type '(pc t))
|
||
(tty-display-color-p display))
|
||
'static-color)
|
||
(t
|
||
'static-gray))))
|
||
|
||
(declare-function x-display-monitor-attributes-list "xfns.c"
|
||
(&optional terminal))
|
||
(declare-function w32-display-monitor-attributes-list "w32fns.c"
|
||
(&optional display))
|
||
(declare-function ns-display-monitor-attributes-list "nsfns.m"
|
||
(&optional terminal))
|
||
|
||
(defun display-monitor-attributes-list (&optional display)
|
||
"Return a list of physical monitor attributes on DISPLAY.
|
||
DISPLAY can be a display name, a terminal name, or a frame.
|
||
If DISPLAY is omitted or nil, it defaults to the selected frame's display.
|
||
Each element of the list represents the attributes of a physical
|
||
monitor. The first element corresponds to the primary monitor.
|
||
|
||
The attributes for a physical monitor are represented as an alist
|
||
of attribute keys and values as follows:
|
||
|
||
geometry -- Position and size in pixels in the form of (X Y WIDTH HEIGHT)
|
||
workarea -- Position and size of the work area in pixels in the
|
||
form of (X Y WIDTH HEIGHT)
|
||
mm-size -- Width and height in millimeters in the form of
|
||
(WIDTH HEIGHT)
|
||
frames -- List of frames dominated by the physical monitor
|
||
name (*) -- Name of the physical monitor as a string
|
||
source (*) -- Source of multi-monitor information as a string
|
||
|
||
where X, Y, WIDTH, and HEIGHT are integers. X and Y are coordinates
|
||
of the top-left corner, and might be negative for monitors other than
|
||
the primary one. Keys labeled with (*) are optional.
|
||
|
||
The \"work area\" is a measure of the \"usable\" display space.
|
||
It may be less than the total screen size, owing to space taken up
|
||
by window manager features (docks, taskbars, etc.). The precise
|
||
details depend on the platform and environment.
|
||
|
||
The `source' attribute describes the source from which the information
|
||
was obtained. On X, this may be one of: \"Gdk\", \"XRandr\", \"Xinerama\",
|
||
or \"fallback\".
|
||
|
||
A frame is dominated by a physical monitor when either the
|
||
largest area of the frame resides in the monitor, or the monitor
|
||
is the closest to the frame if the frame does not intersect any
|
||
physical monitors. Every (non-tooltip) frame (including invisible ones)
|
||
in a graphical display is dominated by exactly one physical
|
||
monitor at a time, though it can span multiple (or no) physical
|
||
monitors."
|
||
(let ((frame-type (framep-on-display display)))
|
||
(cond
|
||
((eq frame-type 'x)
|
||
(x-display-monitor-attributes-list display))
|
||
((eq frame-type 'w32)
|
||
(w32-display-monitor-attributes-list display))
|
||
((eq frame-type 'ns)
|
||
(ns-display-monitor-attributes-list display))
|
||
(t
|
||
(let ((geometry (list 0 0 (display-pixel-width display)
|
||
(display-pixel-height display))))
|
||
`(((geometry . ,geometry)
|
||
(workarea . ,geometry)
|
||
(mm-size . (,(display-mm-width display)
|
||
,(display-mm-height display)))
|
||
(frames . ,(frames-on-display-list display)))))))))
|
||
|
||
|
||
;;;; Frame geometry values
|
||
|
||
(defun frame-geom-value-cons (type value &optional frame)
|
||
"Return equivalent geometry value for FRAME as a cons with car `+'.
|
||
A geometry value equivalent to VALUE for FRAME is returned,
|
||
where the value is a cons with car `+', not numeric.
|
||
TYPE is the car of the original geometry spec (TYPE . VALUE).
|
||
It is `top' or `left', depending on which edge VALUE is related to.
|
||
VALUE is the cdr of a frame geometry spec: (left/top . VALUE).
|
||
If VALUE is a number, then it is converted to a cons value, perhaps
|
||
relative to the opposite frame edge from that in the original spec.
|
||
FRAME defaults to the selected frame.
|
||
|
||
Examples (measures in pixels) -
|
||
Assuming display height/width=1024, frame height/width=600:
|
||
300 inside display edge: 300 => (+ 300)
|
||
(+ 300) => (+ 300)
|
||
300 inside opposite display edge: (- 300) => (+ 124)
|
||
-300 => (+ 124)
|
||
300 beyond display edge
|
||
(= 724 inside opposite display edge): (+ -300) => (+ -300)
|
||
300 beyond display edge
|
||
(= 724 inside opposite display edge): (- -300) => (+ 724)
|
||
|
||
In the 3rd, 4th, and 6th examples, the returned value is relative to
|
||
the opposite frame edge from the edge indicated in the input spec."
|
||
(cond ((and (consp value) (eq '+ (car value))) ; e.g. (+ 300), (+ -300)
|
||
value)
|
||
((natnump value) (list '+ value)) ; e.g. 300 => (+ 300)
|
||
(t ; e.g. -300, (- 300), (- -300)
|
||
(list '+ (- (if (eq 'left type) ; => (+ 124), (+ 124), (+ 724)
|
||
(x-display-pixel-width)
|
||
(x-display-pixel-height))
|
||
(if (integerp value) (- value) (cadr value))
|
||
(if (eq 'left type)
|
||
(frame-pixel-width frame)
|
||
(frame-pixel-height frame)))))))
|
||
|
||
(defun frame-geom-spec-cons (spec &optional frame)
|
||
"Return equivalent geometry spec for FRAME as a cons with car `+'.
|
||
A geometry specification equivalent to SPEC for FRAME is returned,
|
||
where the value is a cons with car `+', not numeric.
|
||
SPEC is a frame geometry spec: (left . VALUE) or (top . VALUE).
|
||
If VALUE is a number, then it is converted to a cons value, perhaps
|
||
relative to the opposite frame edge from that in the original spec.
|
||
FRAME defaults to the selected frame.
|
||
|
||
Examples (measures in pixels) -
|
||
Assuming display height=1024, frame height=600:
|
||
top 300 below display top: (top . 300) => (top + 300)
|
||
(top + 300) => (top + 300)
|
||
bottom 300 above display bottom: (top - 300) => (top + 124)
|
||
(top . -300) => (top + 124)
|
||
top 300 above display top
|
||
(= bottom 724 above display bottom): (top + -300) => (top + -300)
|
||
bottom 300 below display bottom
|
||
(= top 724 below display top): (top - -300) => (top + 724)
|
||
|
||
In the 3rd, 4th, and 6th examples, the returned value is relative to
|
||
the opposite frame edge from the edge indicated in the input spec."
|
||
(cons (car spec) (frame-geom-value-cons (car spec) (cdr spec) frame)))
|
||
|
||
(defun delete-other-frames (&optional frame)
|
||
"Delete all frames on FRAME's terminal, except FRAME.
|
||
If FRAME uses another frame's minibuffer, the minibuffer frame is
|
||
left untouched. FRAME must be a live frame and defaults to the
|
||
selected one."
|
||
(interactive)
|
||
(setq frame (window-normalize-frame frame))
|
||
(let ((minibuffer-frame (window-frame (minibuffer-window frame)))
|
||
(this (next-frame frame t))
|
||
next)
|
||
;; In a first round consider minibuffer-less frames only.
|
||
(while (not (eq this frame))
|
||
(setq next (next-frame this t))
|
||
(unless (eq (window-frame (minibuffer-window this)) this)
|
||
(delete-frame this))
|
||
(setq this next))
|
||
;; In a second round consider all remaining frames.
|
||
(setq this (next-frame frame t))
|
||
(while (not (eq this frame))
|
||
(setq next (next-frame this t))
|
||
(unless (eq this minibuffer-frame)
|
||
(delete-frame this))
|
||
(setq this next))))
|
||
|
||
;; miscellaneous obsolescence declarations
|
||
(define-obsolete-variable-alias 'delete-frame-hook
|
||
'delete-frame-functions "22.1")
|
||
|
||
|
||
;;; Window dividers.
|
||
(defgroup window-divider nil
|
||
"Window dividers."
|
||
:version "25.1"
|
||
:group 'frames
|
||
:group 'windows)
|
||
|
||
(defcustom window-divider-default-places 'right-only
|
||
"Default positions of window dividers.
|
||
Possible values are `bottom-only' (dividers on the bottom of each
|
||
window only), `right-only' (dividers on the right of each window
|
||
only), and t (dividers on the bottom and on the right of each
|
||
window). The default is `right-only'.
|
||
|
||
The value takes effect if and only if dividers are enabled by
|
||
`window-divider-mode'.
|
||
|
||
To position dividers on frames individually, use the frame
|
||
parameters `bottom-divider-width' and `right-divider-width'."
|
||
:type '(choice (const :tag "Bottom only" bottom-only)
|
||
(const :tag "Right only" right-only)
|
||
(const :tag "Bottom and right" t))
|
||
:initialize 'custom-initialize-default
|
||
:set (lambda (symbol value)
|
||
(set-default symbol value)
|
||
(when window-divider-mode
|
||
(window-divider-mode-apply t)))
|
||
:version "25.1")
|
||
|
||
(defun window-divider-width-valid-p (value)
|
||
"Return non-nil if VALUE is a positive number."
|
||
(and (numberp value) (> value 0)))
|
||
|
||
(defcustom window-divider-default-bottom-width 6
|
||
"Default width of dividers on bottom of windows.
|
||
The value must be a positive integer and takes effect when bottom
|
||
dividers are displayed by `window-divider-mode'.
|
||
|
||
To adjust bottom dividers for frames individually, use the frame
|
||
parameter `bottom-divider-width'."
|
||
:type '(restricted-sexp
|
||
:tag "Default width of bottom dividers"
|
||
:match-alternatives (frame-window-divider-width-valid-p))
|
||
:initialize 'custom-initialize-default
|
||
:set (lambda (symbol value)
|
||
(set-default symbol value)
|
||
(when window-divider-mode
|
||
(window-divider-mode-apply t)))
|
||
:version "25.1")
|
||
|
||
(defcustom window-divider-default-right-width 6
|
||
"Default width of dividers on the right of windows.
|
||
The value must be a positive integer and takes effect when right
|
||
dividers are displayed by `window-divider-mode'.
|
||
|
||
To adjust right dividers for frames individually, use the frame
|
||
parameter `right-divider-width'."
|
||
:type '(restricted-sexp
|
||
:tag "Default width of right dividers"
|
||
:match-alternatives (frame-window-divider-width-valid-p))
|
||
:initialize 'custom-initialize-default
|
||
:set (lambda (symbol value)
|
||
(set-default symbol value)
|
||
(when window-divider-mode
|
||
(window-divider-mode-apply t)))
|
||
:version "25.1")
|
||
|
||
(defun window-divider-mode-apply (enable)
|
||
"Apply window divider places and widths to all frames.
|
||
If ENABLE is nil, apply default places and widths. Else reset
|
||
all divider widths to zero."
|
||
(let ((bottom (if (and enable
|
||
(memq window-divider-default-places
|
||
'(bottom-only t)))
|
||
window-divider-default-bottom-width
|
||
0))
|
||
(right (if (and enable
|
||
(memq window-divider-default-places
|
||
'(right-only t)))
|
||
window-divider-default-right-width
|
||
0)))
|
||
(modify-all-frames-parameters
|
||
(list (cons 'bottom-divider-width bottom)
|
||
(cons 'right-divider-width right)))
|
||
(setq default-frame-alist
|
||
(assq-delete-all
|
||
'bottom-divider-width default-frame-alist))
|
||
(setq default-frame-alist
|
||
(assq-delete-all
|
||
'right-divider-width default-frame-alist))
|
||
(when (> bottom 0)
|
||
(setq default-frame-alist
|
||
(cons
|
||
(cons 'bottom-divider-width bottom)
|
||
default-frame-alist)))
|
||
(when (> right 0)
|
||
(setq default-frame-alist
|
||
(cons
|
||
(cons 'right-divider-width right)
|
||
default-frame-alist)))))
|
||
|
||
(define-minor-mode window-divider-mode
|
||
"Display dividers between windows (Window Divider mode).
|
||
With a prefix argument ARG, enable Window Divider mode if ARG is
|
||
positive, and disable it otherwise. If called from Lisp, enable
|
||
the mode if ARG is omitted or nil.
|
||
|
||
The option `window-divider-default-places' specifies on which
|
||
side of a window dividers are displayed. The options
|
||
`window-divider-default-bottom-width' and
|
||
`window-divider-default-right-width' specify their respective
|
||
widths."
|
||
:group 'window-divider
|
||
:global t
|
||
(window-divider-mode-apply window-divider-mode))
|
||
|
||
;; Blinking 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-timer-function' every
|
||
`blink-cursor-interval' seconds.")
|
||
|
||
(defgroup cursor nil
|
||
"Displaying text cursors."
|
||
:version "21.1"
|
||
:group 'frames)
|
||
|
||
(defcustom blink-cursor-delay 0.5
|
||
"Seconds of idle time before the first blink of the cursor.
|
||
Values smaller than 0.2 sec are treated as 0.2 sec."
|
||
:type 'number
|
||
:group 'cursor
|
||
:set (lambda (symbol value)
|
||
(set-default symbol value)
|
||
(when blink-cursor-idle-timer (blink-cursor--start-idle-timer))))
|
||
|
||
(defcustom blink-cursor-interval 0.5
|
||
"Length of cursor blink interval in seconds."
|
||
:type 'number
|
||
:group 'cursor
|
||
:set (lambda (symbol value)
|
||
(set-default symbol value)
|
||
(when blink-cursor-timer (blink-cursor--start-timer))))
|
||
|
||
(defcustom blink-cursor-blinks 10
|
||
"How many times to blink before using a solid cursor on NS, X, and MS-Windows.
|
||
Use 0 or negative value to blink forever."
|
||
:version "24.4"
|
||
:type 'integer
|
||
:group 'cursor)
|
||
|
||
(defvar blink-cursor-blinks-done 1
|
||
"Number of blinks done since we started blinking on NS, X, and MS-Windows.")
|
||
|
||
(defun blink-cursor--start-idle-timer ()
|
||
"Start the `blink-cursor-idle-timer'."
|
||
(when blink-cursor-idle-timer (cancel-timer blink-cursor-idle-timer))
|
||
(setq blink-cursor-idle-timer
|
||
;; The 0.2 sec limitation from below is to avoid erratic
|
||
;; behavior (or downright failure to display the cursor
|
||
;; during command execution) if they set blink-cursor-delay
|
||
;; to a very small or even zero value.
|
||
(run-with-idle-timer (max 0.2 blink-cursor-delay)
|
||
:repeat #'blink-cursor-start)))
|
||
|
||
(defun blink-cursor--start-timer ()
|
||
"Start the `blink-cursor-timer'."
|
||
(when blink-cursor-timer (cancel-timer blink-cursor-timer))
|
||
(setq blink-cursor-timer
|
||
(run-with-timer blink-cursor-interval blink-cursor-interval
|
||
#'blink-cursor-timer-function)))
|
||
|
||
(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)
|
||
;; Set up the timer first, so that if this signals an error,
|
||
;; blink-cursor-end is not added to pre-command-hook.
|
||
(setq blink-cursor-blinks-done 1)
|
||
(blink-cursor--start-timer)
|
||
(add-hook 'pre-command-hook 'blink-cursor-end)
|
||
(internal-show-cursor nil nil)))
|
||
|
||
(defun blink-cursor-timer-function ()
|
||
"Timer function of timer `blink-cursor-timer'."
|
||
(internal-show-cursor nil (not (internal-show-cursor-p)))
|
||
;; Suspend counting blinks when the w32 menu-bar menu is displayed,
|
||
;; since otherwise menu tooltips will behave erratically.
|
||
(or (and (fboundp 'w32--menu-bar-in-use)
|
||
(w32--menu-bar-in-use))
|
||
(setq blink-cursor-blinks-done (1+ blink-cursor-blinks-done)))
|
||
;; Each blink is two calls to this function.
|
||
(when (and (> blink-cursor-blinks 0)
|
||
(<= (* 2 blink-cursor-blinks) blink-cursor-blinks-done))
|
||
(blink-cursor-suspend)
|
||
(add-hook 'post-command-hook 'blink-cursor-check)))
|
||
|
||
|
||
(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)
|
||
(when blink-cursor-timer
|
||
(cancel-timer blink-cursor-timer)
|
||
(setq blink-cursor-timer nil)))
|
||
|
||
(defun blink-cursor-suspend ()
|
||
"Suspend cursor blinking.
|
||
This is called when no frame has focus and timers can be suspended.
|
||
Timers are restarted by `blink-cursor-check', which is called when a
|
||
frame receives focus."
|
||
(blink-cursor-end)
|
||
(when blink-cursor-idle-timer
|
||
(cancel-timer blink-cursor-idle-timer)
|
||
(setq blink-cursor-idle-timer nil)))
|
||
|
||
(defun blink-cursor-check ()
|
||
"Check if cursor blinking shall be restarted.
|
||
This is done when a frame gets focus. Blink timers may be stopped by
|
||
`blink-cursor-suspend'."
|
||
(when (and blink-cursor-mode
|
||
(not blink-cursor-idle-timer))
|
||
(remove-hook 'post-command-hook 'blink-cursor-check)
|
||
(blink-cursor--start-idle-timer)))
|
||
|
||
(define-obsolete-variable-alias 'blink-cursor 'blink-cursor-mode "22.1")
|
||
|
||
(define-minor-mode blink-cursor-mode
|
||
"Toggle cursor blinking (Blink Cursor mode).
|
||
With a prefix argument ARG, enable Blink Cursor mode if ARG is
|
||
positive, and disable it otherwise. If called from Lisp, enable
|
||
the mode if ARG is omitted or nil.
|
||
|
||
If the value of `blink-cursor-blinks' is positive (10 by default),
|
||
the cursor stops blinking after that number of blinks, if Emacs
|
||
gets no input during that time.
|
||
|
||
See also `blink-cursor-interval' and `blink-cursor-delay'.
|
||
|
||
This command is effective only on graphical frames. On text-only
|
||
terminals, cursor blinking is controlled by the terminal."
|
||
:init-value (not (or noninteractive
|
||
no-blinking-cursor
|
||
(eq system-type 'ms-dos)
|
||
(not (memq window-system '(x w32 ns)))))
|
||
:initialize 'custom-initialize-delay
|
||
:group 'cursor
|
||
:global t
|
||
(blink-cursor-suspend)
|
||
(remove-hook 'focus-in-hook #'blink-cursor-check)
|
||
(remove-hook 'focus-out-hook #'blink-cursor-suspend)
|
||
(when blink-cursor-mode
|
||
(add-hook 'focus-in-hook #'blink-cursor-check)
|
||
(add-hook 'focus-out-hook #'blink-cursor-suspend)
|
||
(blink-cursor--start-idle-timer)))
|
||
|
||
|
||
|
||
;; Frame maximization/fullscreen
|
||
|
||
(defun toggle-frame-maximized ()
|
||
"Toggle maximization state of selected frame.
|
||
Maximize selected frame or un-maximize if it is already maximized.
|
||
|
||
If the frame is in fullscreen state, don't change its state, but
|
||
set the frame's `fullscreen-restore' parameter to `maximized', so
|
||
the frame will be maximized after disabling fullscreen state.
|
||
|
||
Note that with some window managers you may have to set
|
||
`frame-resize-pixelwise' to non-nil in order to make a frame
|
||
appear truly maximized. In addition, you may have to set
|
||
`x-frame-normalize-before-maximize' in order to enable
|
||
transitions from one fullscreen state to another.
|
||
|
||
See also `toggle-frame-fullscreen'."
|
||
(interactive)
|
||
(let ((fullscreen (frame-parameter nil 'fullscreen)))
|
||
(cond
|
||
((memq fullscreen '(fullscreen fullboth))
|
||
(set-frame-parameter nil 'fullscreen-restore 'maximized))
|
||
((eq fullscreen 'maximized)
|
||
(set-frame-parameter nil 'fullscreen nil))
|
||
(t
|
||
(set-frame-parameter nil 'fullscreen 'maximized)))))
|
||
|
||
(defun toggle-frame-fullscreen ()
|
||
"Toggle fullscreen state of selected frame.
|
||
Make selected frame fullscreen or restore its previous size if it
|
||
is already fullscreen.
|
||
|
||
Before making the frame fullscreen remember the current value of
|
||
the frame's `fullscreen' parameter in the `fullscreen-restore'
|
||
parameter of the frame. That value is used to restore the
|
||
frame's fullscreen state when toggling fullscreen the next time.
|
||
|
||
Note that with some window managers you may have to set
|
||
`frame-resize-pixelwise' to non-nil in order to make a frame
|
||
appear truly fullscreen. In addition, you may have to set
|
||
`x-frame-normalize-before-maximize' in order to enable
|
||
transitions from one fullscreen state to another.
|
||
|
||
See also `toggle-frame-maximized'."
|
||
(interactive)
|
||
(let ((fullscreen (frame-parameter nil 'fullscreen)))
|
||
(if (memq fullscreen '(fullscreen fullboth))
|
||
(let ((fullscreen-restore (frame-parameter nil 'fullscreen-restore)))
|
||
(if (memq fullscreen-restore '(maximized fullheight fullwidth))
|
||
(set-frame-parameter nil 'fullscreen fullscreen-restore)
|
||
(set-frame-parameter nil 'fullscreen nil)))
|
||
(modify-frame-parameters
|
||
nil `((fullscreen . fullboth) (fullscreen-restore . ,fullscreen))))))
|
||
|
||
;;;; 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)
|
||
(define-key global-map [f11] 'toggle-frame-fullscreen)
|
||
(define-key global-map [(meta f10)] 'toggle-frame-maximized)
|
||
(define-key esc-map [f10] 'toggle-frame-maximized)
|
||
|
||
|
||
;; Misc.
|
||
|
||
;; Only marked as obsolete in 24.3.
|
||
(define-obsolete-variable-alias 'automatic-hscrolling
|
||
'auto-hscroll-mode "22.1")
|
||
|
||
(make-variable-buffer-local 'show-trailing-whitespace)
|
||
|
||
;; Defined in dispnew.c.
|
||
(make-obsolete-variable
|
||
'window-system-version "it does not give useful information." "24.3")
|
||
|
||
;; Variables which should trigger redisplay of the current buffer.
|
||
(mapc (lambda (var)
|
||
(add-variable-watcher var (symbol-function 'set-buffer-redisplay)))
|
||
'(line-spacing
|
||
overline-margin
|
||
line-prefix
|
||
wrap-prefix
|
||
truncate-lines
|
||
bidi-paragraph-direction
|
||
bidi-display-reordering))
|
||
|
||
(provide 'frame)
|
||
|
||
;;; frame.el ends here
|