-;;; avoid.el -- make mouse pointer stay out of the way of editing.
+;;; avoid.el --- make mouse pointer stay out of the way of editing
-;;; Copyright (C) 1993, 1994 Free Software Foundation, Inc.
+;; Copyright (C) 1993, 1994, 2000, 2002, 2003, 2004,
+;; 2005, 2006 Free Software Foundation, Inc.
-;; Author: Boris Goldowsky <boris@cs.rochester.edu>
+;; Author: Boris Goldowsky <boris@gnu.org>
;; Keywords: mouse
;; This file is part of GNU Emacs.
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs; see the file COPYING. If not, write to
-;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
+;; along with GNU Emacs; see the file COPYING. If not, write to the
+;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+;; Boston, MA 02110-1301, USA.
;;; Commentary:
-;;;
-;;; For those who are annoyed by the mouse pointer obscuring text,
-;;; this mode moves the mouse pointer - either just a little out of
-;;; the way, or all the way to the corner of the frame.
-;;; To use, load or evaluate this file and type M-x mouse-avoidance-mode .
-;;; To set up permanently, put the following in your .emacs:
-;;;
-;;; (if window-system (mouse-avoidance-mode 'animate))
-;;;
-;;; The 'animate can be 'jump or 'banish or 'exile or 'protean if you prefer.
-;;; See the documentation for function `mouse-avoidance-mode' for
-;;; details of the different modes.
-;;;
-;;; For added silliness, make the animatee animate...
-;;; put something similar to the following into your .emacs:
-;;;
-;;; (if window-system
-;;; (mouse-avoidance-set-pointer-shape
-;;; (eval (nth (random 4)
-;;; '(x-pointer-man x-pointer-spider
-;;; x-pointer-gobbler x-pointer-gumby)))))
-;;;
-;;; For completely random pointer shape, replace the setq above with:
-;;; (setq x-pointer-shape (mouse-avoidance-random-shape))
-;;;
-;;; Bugs / Warnings / To-Do:
-;;;
-;;; - Using this code does slow emacs down. "banish" mode shouldn't
-;;; be too bad, and on my workstation even "animate" is reasonable.
-;;;
-;;; - It ought to find out where any overlapping frames are and avoid them,
-;;; rather than always raising the frame.
-
-;;; Credits:
-;;; This code was helped by all those who contributed suggestions,
-;;; fixes, and additions
-;;; Joe Harrington (and his advisor), for the original inspiration.
-;;; Ken Manheimer, for dreaming up the Protean mode.
-;;; Richard Stallman, for the awful cat-and-mouse pun, among other things.
-;;; Mike Williams, Denis Howe, Bill Benedetto, Chris Moore, Don Morris,
-;;; Simon Marshall, and M.S. Ashton, for their feedback.
-;;;
+
+;; For those who are annoyed by the mouse pointer obscuring text,
+;; this mode moves the mouse pointer - either just a little out of
+;; the way, or all the way to the corner of the frame.
+;; To use, load or evaluate this file and type M-x mouse-avoidance-mode .
+;; To set up permanently, put the following in your .emacs:
+;;
+;; (if (display-mouse-p) (mouse-avoidance-mode 'animate))
+;;
+;; Other legitimate alternatives include
+;; `banish', `exile', `jump', `cat-and-mouse', and `proteus'.
+;; They do somewhat different things.
+;; See the documentation for function `mouse-avoidance-mode' for
+;; details of the different modes.
+;;
+;; For added silliness, make the animatee animate...
+;; put something similar to the following into your .emacs:
+;;
+;; (if (eq window-system 'x)
+;; (mouse-avoidance-set-pointer-shape
+;; (eval (nth (random 4)
+;; '(x-pointer-man x-pointer-spider
+;; x-pointer-gobbler x-pointer-gumby)))))
+;;
+;; For completely random pointer shape, replace the setq above with:
+;; (setq x-pointer-shape (mouse-avoidance-random-shape))
+;;
+;; Bugs / Warnings / To-Do:
+;;
+;; - Using this code does slow Emacs down. "banish" mode shouldn't
+;; be too bad, and on my workstation even "animate" is reasonable.
+;;
+;; - It ought to find out where any overlapping frames are and avoid them,
+;; rather than always raising the frame.
+
+;; Credits:
+;; This code was helped by all those who contributed suggestions,
+;; fixes, and additions
+;; Joe Harrington (and his advisor), for the original inspiration.
+;; Ken Manheimer, for dreaming up the Protean mode.
+;; Richard Stallman, for the awful cat-and-mouse pun, among other things.
+;; Mike Williams, Denis Howe, Bill Benedetto, Chris Moore, Don Morris,
+;; Simon Marshall, and M.S. Ashton, for their feedback.
+
;;; Code:
(provide 'avoid)
-(defvar mouse-avoidance-mode nil
- "Value is t or a symbol if the mouse pointer should avoid the cursor.
-See function `mouse-avoidance-mode' for possible values. Changing this
-variable is NOT the recommended way to change modes; use that function
-instead.")
+(defgroup avoid nil
+ "Make mouse pointer stay out of the way of editing."
+ :prefix "mouse-avoidance-"
+ :group 'mouse)
-(defvar mouse-avoidance-nudge-dist 15
+;;;###autoload
+(defcustom mouse-avoidance-mode nil
+ "Activate mouse avoidance mode.
+See function `mouse-avoidance-mode' for possible values.
+Setting this variable directly does not take effect;
+use either \\[customize] or the function `mouse-avoidance-mode'."
+ :set (lambda (symbol value)
+ ;; 'none below prevents toggling when value is nil.
+ (mouse-avoidance-mode (or value 'none)))
+ :initialize 'custom-initialize-default
+ :type '(choice (const :tag "none" nil) (const banish) (const jump)
+ (const animate) (const exile) (const proteus)
+ )
+ :group 'avoid
+ :require 'avoid
+ :version "20.3")
+
+
+(defcustom mouse-avoidance-nudge-dist 15
"*Average distance that mouse will be moved when approached by cursor.
-Only applies in mouse-avoidance-mode `jump' and its derivatives.
-For best results make this larger than `mouse-avoidance-threshold'.")
-
-(defvar mouse-avoidance-nudge-var 10
- "*Variability of `mouse-avoidance-nudge-dist' (which see).")
-
-(defvar mouse-avoidance-animation-delay .01
- "Delay between animation steps, in seconds.")
-
-(defvar mouse-avoidance-threshold 5
+Only applies in Mouse-Avoidance mode `jump' and its derivatives.
+For best results make this larger than `mouse-avoidance-threshold'."
+ :type 'integer
+ :group 'avoid)
+
+(defcustom mouse-avoidance-nudge-var 10
+ "*Variability of `mouse-avoidance-nudge-dist' (which see)."
+ :type 'integer
+ :group 'avoid)
+
+(defcustom mouse-avoidance-animation-delay .01
+ "Delay between animation steps, in seconds."
+ :type 'number
+ :group 'avoid)
+
+(defcustom mouse-avoidance-threshold 5
"*Mouse-pointer's flight distance.
If the cursor gets closer than this, the mouse pointer will move away.
-Only applies in mouse-avoidance-modes `animate' and `jump'.")
+Only applies in mouse-avoidance-modes `animate' and `jump'."
+ :type 'integer
+ :group 'avoid)
;; Internal variables
(defvar mouse-avoidance-state nil)
(defvar mouse-avoidance-pointer-shapes nil)
(defvar mouse-avoidance-n-pointer-shapes 0)
+(defvar mouse-avoidance-old-pointer-shape nil)
+
+;; This timer is used to run something when Emacs is idle.
+(defvar mouse-avoidance-timer nil)
;;; Functions:
(defsubst mouse-avoidance-set-pointer-shape (shape)
"Set the shape of the mouse pointer to SHAPE."
- (setq x-pointer-shape shape)
- (set-mouse-color nil))
+ (when (boundp 'x-pointer-shape)
+ (setq x-pointer-shape shape)
+ (set-mouse-color nil)))
(defun mouse-avoidance-point-position ()
"Return the position of point as (FRAME X . Y).
-Analogous to mouse-position."
- (let* ((w (selected-window))
- (edges (window-edges w))
- (list
- (compute-motion (max (window-start w) (point-min)) ; start pos
- ;; window-start can be < point-min if the
- ;; latter has changed since the last redisplay
- '(0 . 0) ; start XY
- (point) ; stop pos
- (cons (window-width) (window-height)); stop XY: none
- (1- (window-width)) ; width
- (cons (window-hscroll w) 0) ; 0 may not be right?
- (selected-window))))
- ;; compute-motion returns (pos HPOS VPOS prevhpos contin)
- ;; we want: (frame hpos . vpos)
+Analogous to `mouse-position'."
+ (let ((edges (window-inside-edges))
+ (x-y (posn-x-y (posn-at-point))))
(cons (selected-frame)
- (cons (+ (car edges) (car (cdr list)))
- (+ (car (cdr edges)) (car (cdr (cdr list))))))))
+ (cons (+ (car edges)
+ (/ (car x-y) (frame-char-width)))
+ (+ (car (cdr edges))
+ (/ (cdr x-y) (frame-char-height)))))))
;(defun mouse-avoidance-point-position-test ()
; (interactive)
-; (message (format "point=%s mouse=%s"
+; (message (format "point=%s mouse=%s"
; (cdr (mouse-avoidance-point-position))
; (cdr (mouse-position)))))
(raise-frame f)
(set-mouse-position f (car pos) (cdr pos))
t))
-
+
(defun mouse-avoidance-too-close-p (mouse)
- ;; Return t if mouse pointer and point cursor are too close.
- ;; Acceptable distance is defined by mouse-avoidance-threshold.
- (let ((point (mouse-avoidance-point-position)))
- (and (eq (car mouse) (car point))
- (car (cdr mouse))
- (< (abs (- (car (cdr mouse)) (car (cdr point))))
- mouse-avoidance-threshold)
- (< (abs (- (cdr (cdr mouse)) (cdr (cdr point))))
- mouse-avoidance-threshold))))
+ "Return t if mouse pointer and point cursor are too close.
+MOUSE is the current mouse position as returned by `mouse-position'.
+Acceptable distance is defined by `mouse-avoidance-threshold'."
+ (let* ((frame (car mouse))
+ (mouse-y (cdr (cdr mouse)))
+ (tool-bar-lines (frame-parameter nil 'tool-bar-lines)))
+ (or tool-bar-lines
+ (setq tool-bar-lines 0))
+ (if (and mouse-y (< mouse-y tool-bar-lines))
+ nil
+ (let ((point (mouse-avoidance-point-position))
+ (mouse-x (car (cdr mouse))))
+ (and (eq frame (car point))
+ (not (null mouse-x))
+ (< (abs (- mouse-x (car (cdr point))))
+ mouse-avoidance-threshold)
+ (< (abs (- mouse-y (cdr (cdr point))))
+ mouse-avoidance-threshold))))))
(defun mouse-avoidance-banish-destination ()
- "The position to which mouse-avoidance-mode `banish' moves the mouse.
+ "The position to which Mouse-Avoidance mode `banish' moves the mouse.
You can redefine this if you want the mouse banished to a different corner."
- (cons (1- (frame-width))
- 0))
+ (let* ((pos (window-edges)))
+ (cons (- (nth 2 pos) 2)
+ (nth 1 pos))))
(defun mouse-avoidance-banish-mouse ()
;; Put the mouse pointer in the upper-right corner of the current frame.
;; Args are the CURRENT location, the desired DELTA for
;; warp-conservation, the DISTANCE we like to move, the VARIABILITY
;; in distance allowed, and the MIN and MAX possible window positions.
- ;; Returns something as close to DELTA as possible withing the constraints.
+ ;; Returns something as close to DELTA as possible within the constraints.
(let ((L1 (max (- min cur) (+ (- dist) (- var))))
(R1 (+ (- dist) var ))
(L2 (+ dist (- var)))
((or R1 L2))
(t 0))))
-(defun mouse-avoidance-nudge-mouse ()
- ;; Push the mouse a little way away, possibly animating the move
+(defun mouse-avoidance-nudge-mouse ()
+ ;; Push the mouse a little way away, possibly animating the move.
;; For these modes, state keeps track of the total offset that we've
;; accumulated, and tries to keep it close to zero.
(let* ((cur (mouse-position))
(cur-frame (car cur))
(cur-pos (cdr cur))
- (deltax (mouse-avoidance-delta
+ (pos (window-edges))
+ (wleft (pop pos))
+ (wtop (pop pos))
+ (wright (pop pos))
+ (wbot (pop pos))
+ (deltax (mouse-avoidance-delta
(car cur-pos) (- (random mouse-avoidance-nudge-var)
(car mouse-avoidance-state))
mouse-avoidance-nudge-dist mouse-avoidance-nudge-var
- 0 (frame-width)))
- (deltay (mouse-avoidance-delta
+ wleft (1- wright)))
+ (deltay (mouse-avoidance-delta
(cdr cur-pos) (- (random mouse-avoidance-nudge-var)
(cdr mouse-avoidance-state))
mouse-avoidance-nudge-dist mouse-avoidance-nudge-var
- 0 (frame-height))))
+ wtop (1- wbot))))
(setq mouse-avoidance-state
(cons (+ (car mouse-avoidance-state) deltax)
(+ (cdr mouse-avoidance-state) deltay)))
- (if (or (eq mouse-avoidance-mode 'animate)
+ (if (or (eq mouse-avoidance-mode 'animate)
(eq mouse-avoidance-mode 'proteus))
(let ((i 0.0))
(while (<= i 1)
- (mouse-avoidance-set-mouse-position
+ (mouse-avoidance-set-mouse-position
(cons (+ (car cur-pos) (round (* i deltax)))
(+ (cdr cur-pos) (round (* i deltay)))))
(setq i (+ i (max .1 (/ 1.0 mouse-avoidance-nudge-dist))))
(if (eq mouse-avoidance-mode 'proteus)
- (mouse-avoidance-set-pointer-shape
+ (mouse-avoidance-set-pointer-shape
(mouse-avoidance-random-shape)))
(sit-for mouse-avoidance-animation-delay)))
(mouse-avoidance-set-mouse-position (cons (+ (car (cdr cur)) deltax)
(if (null mouse-avoidance-pointer-shapes)
(progn
(setq mouse-avoidance-pointer-shapes
- (mapcar '(lambda (x) (symbol-value (intern x)))
+ (mapcar (lambda (x) (symbol-value (intern x)))
(all-completions "x-pointer-" obarray
- '(lambda (x)
+ (lambda (x)
(and (boundp x)
(integerp (symbol-value x)))))))
- (setq mouse-avoidance-n-pointer-shapes
+ (setq mouse-avoidance-n-pointer-shapes
(length mouse-avoidance-pointer-shapes))))
(nth (random mouse-avoidance-n-pointer-shapes)
mouse-avoidance-pointer-shapes))
+(defun mouse-avoidance-ignore-p ()
+ (let ((mp (mouse-position)))
+ (or executing-kbd-macro ; don't check inside macro
+ (null (cadr mp)) ; don't move unless in an Emacs frame
+ (not (eq (car mp) (selected-frame)))
+ ;; Don't do anything if last event was a mouse event.
+ ;; FIXME: this code fails in the case where the mouse was moved
+ ;; since the last key-press but without generating any event.
+ (and (consp last-input-event)
+ (symbolp (car last-input-event))
+ (let ((modifiers (event-modifiers (car last-input-event))))
+ (or (memq (car last-input-event)
+ '(mouse-movement scroll-bar-movement
+ select-window switch-frame))
+ (memq 'click modifiers)
+ (memq 'double modifiers)
+ (memq 'triple modifiers)
+ (memq 'drag modifiers)
+ (memq 'down modifiers)))))))
+
(defun mouse-avoidance-banish-hook ()
- (if (and (not executing-kbd-macro) ; don't check inside macro
- (mouse-avoidance-kbd-command (this-command-keys)))
+ (if (not (mouse-avoidance-ignore-p))
(mouse-avoidance-banish-mouse)))
(defun mouse-avoidance-exile-hook ()
;; For exile mode, the state is nil when the mouse is in its normal
;; position, and set to the old mouse-position when the mouse is in exile.
- (if (and (not executing-kbd-macro)
- (mouse-avoidance-kbd-command (this-command-keys)))
+ (if (not (mouse-avoidance-ignore-p))
(let ((mp (mouse-position)))
(cond ((and (not mouse-avoidance-state)
(mouse-avoidance-too-close-p mp))
(defun mouse-avoidance-fancy-hook ()
;; Used for the "fancy" modes, ie jump et al.
- (if (and (not executing-kbd-macro) ; don't check inside macro
- (mouse-avoidance-kbd-command (this-command-keys))
+ (if (and (not (mouse-avoidance-ignore-p))
(mouse-avoidance-too-close-p (mouse-position)))
(let ((old-pos (mouse-position)))
(mouse-avoidance-nudge-mouse)
;; This should never happen.
(apply 'set-mouse-position old-pos)))))
-(defun mouse-avoidance-kbd-command (key)
- "Return t if the KEYSEQENCE is composed of keyboard events only.
-Return nil if there are any lists in the key sequence."
- (cond ((null key) nil) ; Null event seems to be
- ; returned occasionally.
- ((not (vectorp key)) t) ; Strings are keyboard events.
- ((catch 'done
- (let ((i 0)
- (l (length key)))
- (while (< i l)
- (if (listp (aref key i))
- (throw 'done nil))
- (setq i (1+ i))))
- t))))
-
;;;###autoload
(defun mouse-avoidance-mode (&optional mode)
"Set cursor avoidance mode to MODE.
MODE should be one of the symbols `banish', `exile', `jump', `animate',
`cat-and-mouse', `proteus', or `none'.
-If MODE is nil, toggle mouse avoidance between `none` and `banish'
+If MODE is nil, toggle mouse avoidance between `none' and `banish'
modes. Positive numbers and symbols other than the above are treated
as equivalent to `banish'; negative numbers and `-' are equivalent to `none'.
-Effects of the different modes:
+Effects of the different modes:
* banish: Move the mouse to the upper-right corner on any keypress.
* exile: Move the mouse to the corner only if the cursor gets too close,
and allow it to return once the cursor is out of the way.
nil t))))
(if (eq mode 'cat-and-mouse)
(setq mode 'animate))
- (setq post-command-hook
- (delete 'mouse-avoidance-banish-hook (append post-command-hook nil)))
- (setq post-command-hook
- (delete 'mouse-avoidance-exile-hook (append post-command-hook nil)))
- (setq post-command-hook
- (delete 'mouse-avoidance-fancy-hook (append post-command-hook nil)))
+ (if mouse-avoidance-timer
+ (cancel-timer mouse-avoidance-timer))
+ (setq mouse-avoidance-timer nil)
+
+ ;; Restore pointer shape if necessary
+ (if (eq mouse-avoidance-mode 'proteus)
+ (mouse-avoidance-set-pointer-shape mouse-avoidance-old-pointer-shape))
+
+ ;; Do additional setup depending on version of mode requested
(cond ((eq mode 'none)
(setq mouse-avoidance-mode nil))
((or (eq mode 'jump)
(eq mode 'animate)
(eq mode 'proteus))
- (add-hook 'post-command-hook 'mouse-avoidance-fancy-hook)
+ (setq mouse-avoidance-timer
+ (run-with-idle-timer 0.1 t 'mouse-avoidance-fancy-hook))
(setq mouse-avoidance-mode mode
- mouse-avoidance-state (cons 0 0)))
+ mouse-avoidance-state (cons 0 0)
+ mouse-avoidance-old-pointer-shape
+ (and (boundp 'x-pointer-shape) x-pointer-shape)))
((eq mode 'exile)
- (add-hook 'post-command-hook 'mouse-avoidance-exile-hook)
+ (setq mouse-avoidance-timer
+ (run-with-idle-timer 0.1 t 'mouse-avoidance-exile-hook))
(setq mouse-avoidance-mode mode
mouse-avoidance-state nil))
- ((or (eq mode 'banish)
+ ((or (eq mode 'banish)
(eq mode t)
(and (null mode) (null mouse-avoidance-mode))
(and mode (> (prefix-numeric-value mode) 0)))
- (add-hook 'post-command-hook 'mouse-avoidance-banish-hook)
+ (setq mouse-avoidance-timer
+ (run-with-idle-timer 0.1 t 'mouse-avoidance-banish-hook))
(setq mouse-avoidance-mode 'banish))
(t (setq mouse-avoidance-mode nil)))
(force-mode-line-update))
-(or (assq 'mouse-avoidance-mode minor-mode-alist)
- (setq minor-mode-alist (cons '(mouse-avoidance-mode " Avoid")
- minor-mode-alist)))
+;; Most people who use avoid mode leave it on all the time, so it's not
+;; very informative to announce it in the mode line.
+;;(or (assq 'mouse-avoidance-mode minor-mode-alist)
+;; (setq minor-mode-alist (cons '(mouse-avoidance-mode " Avoid")
+;; minor-mode-alist)))
+
+;; Needed for custom.
+(if mouse-avoidance-mode
+ (mouse-avoidance-mode mouse-avoidance-mode))
-;;; End of avoid.el
+;; arch-tag: 64ad4ef8-a870-4183-8d96-3aa93b7a6800
+;;; avoid.el ends here