-;;; 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
-;; Version: 1.10
;; 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 this file on your load-path and put the
-;;; following in your .emacs:
-;;;
-;;; (cond (window-system
-;;; (require 'avoid)
-;;; (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:
-;;;
-;;; (cond (window-system
-;;; (setq x-pointer-shape
-;;; (eval (nth (random 4)
-;;; '(x-pointer-man x-pointer-spider
-;;; x-pointer-gobbler x-pointer-gumby))))
-;;; (set-mouse-color (cdr (assoc 'mouse-color (frame-parameters))))))
-;;;
-;;; 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
-;;; ever be too bad though, and on my workstation even "animate" doesn't
-;;; seem to have a noticable effect during editing.
-;;;
-;;; - It should 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 the function
-instead.")
-
-(defvar mouse-avoidance-nudge-dist 15
+(defgroup avoid nil
+ "Make mouse pointer stay out of the way of editing."
+ :prefix "mouse-avoidance-"
+ :group 'mouse)
+
+;;;###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 mode-avoidance-mode and `jump' and its derivatives.
-For best results make this larger than mouse-avoidance-threshhold.")
-
-(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-threshhold 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."
+ (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."
+ "Return the position of point as (FRAME X . Y).
+Analogous to `mouse-position'."
(let* ((w (selected-window))
- (edges (window-edges w))
- (list
- (compute-motion (window-start w) ; start pos
- (cons (car edges) (car (cdr edges))) ; start XY
+ (edges (window-inside-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 (nth 2 edges) (nth 3 edges)) ; stop XY: none
- (1- (window-width)) ; width
- (cons (window-hscroll w) 0) ; 0 may not be right?
+ nil ; stop XY: none
+ nil ; 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)
- (setcar list (selected-frame))
- (setcdr (cdr list) (car (cdr (cdr list))))
- list))
+ (cons (selected-frame)
+ (cons (+ (car edges) (car (cdr list)))
+ (+ (car (cdr edges)) (car (cdr (cdr list))))))))
+
+;(defun mouse-avoidance-point-position-test ()
+; (interactive)
+; (message (format "point=%s mouse=%s"
+; (cdr (mouse-avoidance-point-position))
+; (cdr (mouse-position)))))
(defun mouse-avoidance-set-mouse-position (pos)
;; Carefully set mouse position to given position (X . Y)
(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-threshhold.
- (let ((point (mouse-avoidance-point-position)))
- (and (eq (car mouse) (car point))
- (car (cdr mouse))
- (< (abs (- (car (cdr mouse)) (car (cdr point))))
- mouse-avoidance-threshhold)
- (< (abs (- (cdr (cdr mouse)) (cdr (cdr point))))
- mouse-avoidance-threshhold))))
+ "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)
- (color (cdr (assoc 'mouse-color (frame-parameters)))))
+ (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)
- (progn
- (setq x-pointer-shape (mouse-avoidance-random-shape))
- (set-mouse-color color)))
+ (mouse-avoidance-set-pointer-shape
+ (mouse-avoidance-random-shape)))
(sit-for mouse-avoidance-animation-delay)))
- (mouse-avoidance-set-mouse-position
- (cons (mod (+ (car (cdr cur)) deltax) (window-width))
- (mod (+ (cdr (cdr cur)) deltay) (window-height)))))))
+ (mouse-avoidance-set-mouse-position (cons (+ (car (cdr cur)) deltax)
+ (+ (cdr (cdr cur)) deltay))))))
(defun mouse-avoidance-random-shape ()
"Return a random cursor shape.
(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)
- (if (not (eq (selected-frame) (car old-pos))) ; move went awry
- (set-mouse-position old-pos (car old-pos) ; sigh..
- (car (cdr old-pos))
- (cdr (cdr old-pos)))))))
-
-(defun mouse-avoidance-kbd-command (key)
- "Return t if the KEYSEQENCE is composed of keyboard events only.
-Returns 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))))
+ (if (not (eq (selected-frame) (car old-pos)))
+ ;; This should never happen.
+ (apply 'set-mouse-position old-pos)))))
+;;;###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:
- * 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,
+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.
- * JUMP: If the cursor gets too close to the mouse, displace the mouse
+ * jump: If the cursor gets too close to the mouse, displace the mouse
a random distance & direction.
- * ANIMATE: As `jump', but shows steps along the way for illusion of motion.
- * CAT-AND-MOUSE: Same as `animate'.
- * PROTEUS: As `animate', but changes the shape of the mouse pointer too.
+ * animate: As `jump', but shows steps along the way for illusion of motion.
+ * cat-and-mouse: Same as `animate'.
+ * proteus: As `animate', but changes the shape of the mouse pointer too.
Whenever the mouse is moved, the frame is also raised.
-\(see `mouse-avoidance-threshhold' for definition of \"too close\",
+\(see `mouse-avoidance-threshold' for definition of \"too close\",
and `mouse-avoidance-nudge-dist' and `mouse-avoidance-nudge-var' for
definition of \"random distance\".)"
(interactive
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