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- ;;; mouse.el --- window system-independent mouse support.
- ;; Keywords: hardware
-
- ;; Copyright (C) 1988, 1992, 1993, 1994 Free Software Foundation, Inc.
- ;; Copyright (C) 1995 Tinker Systems
- ;; Copyright (C) 1995, 1996 Ben Wing.
-
- ;; This file is part of XEmacs.
-
- ;; XEmacs is free software; you can redistribute it and/or modify it
- ;; under the terms of the GNU General Public License as published by
- ;; the Free Software Foundation; either version 2, or (at your option)
- ;; any later version.
-
- ;; XEmacs is distributed in the hope that it will be useful, but
- ;; WITHOUT ANY WARRANTY; without even the implied warranty of
- ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- ;; General Public License for more details.
-
- ;; You should have received a copy of the GNU General Public License
- ;; along with XEmacs; see the file COPYING. If not, write to the
- ;; Free Software Foundation, 59 Temple Place - Suite 330,
- ;; Boston, MA 02111-1307, USA.
-
- ;;; Synched up with: Not synched with FSF. Almost completely divergent.
-
- (provide 'mouse)
-
- (global-set-key 'button1 'mouse-track)
- (global-set-key '(shift button1) 'mouse-track-adjust)
- (global-set-key '(control button1) 'mouse-track-insert)
- (global-set-key '(control shift button1) 'mouse-track-delete-and-insert)
- (global-set-key '(meta button1) 'mouse-track-do-rectangle)
-
- ;; enable drag regions (ograf@fga.de)
- ;; if button2 is dragged from within a region, this becomes a drop
- (if (or (featurep 'offix) ;; do we have DnD support?
- (featurep 'cde))
- (global-set-key 'button2 'mouse-drag-or-yank)
- (global-set-key 'button2 'mouse-yank))
-
- ;; enable drops from OffiX (ograf@fga.de)
- ;; accept any button1,2,3 drop with `mouse-offix-drop'
- (cond ((featurep 'offix)
- (global-set-key 'drop1 'mouse-offix-drop)
- (global-set-key 'drop2 'mouse-offix-drop)
- (global-set-key 'drop3 'mouse-offix-drop)))
-
- (defcustom mouse-track-rectangle-p nil
- "*If true, then dragging out a region with the mouse selects rectangles
- instead of simple start/end regions."
- :type 'boolean
- :group 'mouse)
-
- (defcustom mouse-yank-at-point nil
- "*If non-nil, the function `mouse-yank' will yank text at the cursor location.
- Otherwise, the cursor will be moved to the location of the pointer click before
- text is inserted."
- :type 'boolean
- :group 'mouse)
-
- (defvar mouse-yank-function 'mouse-consolidated-yank
- "Function that is called upon by `mouse-yank' to actually insert text.")
-
- (defun mouse-consolidated-yank ()
- (interactive)
- (case (device-type)
- (x (x-yank-function))
- (tty (yank))
- (otherwise (yank))))
-
-
- (defun mouse-select ()
- "Select Emacs window the mouse is on."
- (interactive "@"))
-
- (defun mouse-delete-window ()
- "Delete the Emacs window the mouse is on."
- (interactive "@")
- (delete-window))
-
- (defun mouse-keep-one-window ()
- "Select Emacs window mouse is on, then kill all other Emacs windows."
- (interactive "@")
- (delete-other-windows))
-
- (defun mouse-select-and-split ()
- "Select Emacs window mouse is on, then split it vertically in half."
- (interactive "@")
- (split-window-vertically nil))
-
- (defun mouse-set-point (event)
- "Select Emacs window mouse is on, and move point to mouse position."
- (interactive "@e")
- (let ((window (event-window event))
- (pos (event-point event))
- (close-pos (event-closest-point event)))
- (or window (error "not in a window"))
- (select-window window)
- (if (and pos (> pos 0))
- ;; If the event was over a text char, it's easy.
- (goto-char (max (min pos (point-max)) (point-min)))
- (if (and close-pos (> close-pos 0))
- (goto-char (max (min close-pos (point-max)) (point-min)))
- ;; When the event occurs outside of the frame directly to the
- ;; left or right of a modeline, close-point is nil, but
- ;; event-over-modeline is also nil. That will drop us to this
- ;; point. So instead of erroring, just return nil.
- nil))))
-
- (defun mouse-yank (event)
- "Paste text with the mouse.
- If the variable `mouse-yank-at-point' is nil, then pasting occurs at the
- location of the click; otherwise, pasting occurs at the current cursor
- location."
- (interactive "e")
- (and (not mouse-yank-at-point)
- (mouse-set-point event))
- (funcall mouse-yank-function))
-
- (defun click-inside-extent-p (click extent)
- "Returns non-nil if the button event is within the bounds of the primary
- selection-extent, nil otherwise."
- ;; stig@hackvan.com
- (let ((ewin (event-window click))
- (epnt (event-point click)))
- (and ewin
- epnt
- extent
- (eq (window-buffer ewin)
- (extent-object extent))
- (extent-start-position extent)
- (> epnt (extent-start-position extent))
- (> (extent-end-position extent) epnt))))
-
- (defun click-inside-selection-p (click)
- (or (click-inside-extent-p click primary-selection-extent)
- (click-inside-extent-p click zmacs-region-extent)
- ))
-
- (defun point-inside-extent-p (extent)
- "Returns non-nil if the point is within or just after the bounds of the
- primary selection-extent, nil otherwise."
- ;; stig@hackvan.com
- (and extent
- (eq (current-buffer)
- (extent-object extent))
- (> (point) (extent-start-position extent))
- (>= (extent-end-position extent) (point))))
-
- (defun point-inside-selection-p ()
- ;; by Stig@hackvan.com
- (or (point-inside-extent-p primary-selection-extent)
- (point-inside-extent-p zmacs-region-extent)))
-
- (defun mouse-drag-or-yank (event)
- "Either drag or paste the current selection. If the variable
- `mouse-yank-at-point' is non-nil, then moves the cursor to the location of
- the click before pasting.
- This functions has to be improved. Until now it is just a (working) test."
- ;; by Oliver Graf <ograf@fga.de>
- (interactive "e")
- (if (click-inside-extent-p event zmacs-region-extent)
- ;; okay, this is a drag
- (cond ((featurep 'offix)
- (offix-start-drag-region event
- (extent-start-position zmacs-region-extent)
- (extent-end-position zmacs-region-extent)))
- ((featurep 'cde)
- ;; should also work with CDE
- (cde-start-drag
- (extent-start-position zmacs-region-extent)
- (extent-end-position zmacs-region-extent)))
- (t ding))
- ;; no drag, call region-funct
- (and (not mouse-yank-at-point)
- (mouse-set-point event))
- (funcall mouse-yank-function))
- )
-
- (defun mouse-offix-drop (event)
- "Do something with an OffiX drop event. Inserts Text drops and
- executes appropriate commands for specific drops.
- Text drops follow the `mouse-yank-at-point' variable."
- ;; by Oliver Graf <ograf@fga.de>
- (interactive "e")
- (let ((type (car (event-drag-and-drop-data event)))
- (data (cadr (event-drag-and-drop-data event)))
- (frame (event-channel event)))
- (cond ((= type 2)
- (let ((x pop-up-windows))
- (setq pop-up-windows nil)
- (pop-to-buffer (find-file-noselect data) nil frame)
- (make-frame-visible frame)
- (setq pop-up-windows x)))
- ((= type 3)
- (let ((x pop-up-windows))
- (setq pop-up-windows nil)
- (while (not (eq data ()))
- (pop-to-buffer (find-file-noselect (car data)) nil frame)
- (setq data (cdr data)))
- (make-frame-visible frame)
- (setq pop-up-windows x)))
- ((= type 4)
- (and (not mouse-yank-at-point)
- (mouse-set-point event))
- (insert data))
- ((= type 5) (dired data))
- ((or (= type 6) (= type 7)) (dired data)) ;; this is junk
- ((= type 8) (funcall browse-url-browser-function data))
- ((= type 9)
- (let ((buf (generate-new-buffer "DndMIME")))
- (set-buffer buf)
- (pop-to-buffer buf nil frame)
- (insert data)
- (make-frame-visible frame)))
- (t ;; this is raw data or unknown stuff
- (let ((buf (generate-new-buffer "DndRawData")))
- (set-buffer buf)
- (pop-to-buffer buf nil frame)
- (insert data)
- (hexlify-buffer)
- (make-frame-visible frame))))))
-
- (defun mouse-eval-sexp (click force-window)
- "Evaluate the sexp under the mouse. Usually, this is the last sexp before
- the click, but if you click on a left paren, then it is the sexp beginning
- with the paren that is evaluated. Also, since strings evaluate to themselves,
- they're fed to re-search-forward and the matched region is highlighted until
- the mouse button is released.
-
- Perhaps the most useful thing about this function is that the evaluation of
- the expression which is clicked upon is relative not to the window where you
- click, but to the current window and the current position of point. Thus,
- you can use `mouse-eval-sexp' to interactively test code that acts upon a
- buffer...something you cannot do with the standard `eval-last-sexp' function.
- It's also fantastic for debugging regular expressions."
- ;; by Stig@hackvan.com
- (interactive "e\nP")
- (let (exp val result-str)
- (setq exp (save-window-excursion
- (save-excursion
- (mouse-set-point click)
- (save-excursion
- (or (looking-at "(") (forward-sexp -1))
- (read (point-marker))))))
- (cond ((stringp exp)
- (if (setq val (re-search-forward exp nil t))
- (let* ((oo (make-extent (match-beginning 0) (match-end 0))))
- (set-extent-face oo 'highlight)
- (set-extent-priority oo 1000)
- ;; wait for button release...
- (setq unread-command-event (next-command-event))
- (delete-extent oo))
- (message "Regex \"%s\" not found" exp)
- (ding nil 'quiet)))
- (t (setq val (if (fboundp 'eval-interactive)
- (eval-interactive exp)
- (eval exp)))))
- (setq result-str (prin1-to-string val))
- ;; #### -- need better test
- (if (and (not force-window)
- (<= (length result-str) (window-width (selected-window))))
- (message "%s" result-str)
- (with-output-to-temp-buffer "*Mouse-Eval*"
- (condition-case nil
- (pprint val)
- (error (prin1 val))))
- )))
-
- (defun mouse-line-length (event)
- "Print the length of the line indicated by the pointer."
- (interactive "@e")
- (save-excursion
- (mouse-set-point event)
- (message "Line length: %d" (- (progn (end-of-line) (point))
- (progn (beginning-of-line) (point)))))
- (sleep-for 1))
-
- (defun mouse-set-mark (event)
- "Select Emacs window mouse is on, and set mark at mouse position.
- Display cursor at that position for a second."
- (interactive "@e")
- (let ((point-save (point)))
- (unwind-protect
- (progn (mouse-set-point event)
- (push-mark nil t)
- (sit-for 1))
- (goto-char point-save))))
-
- (defun mouse-scroll (event)
- "Scroll point to the mouse position."
- (interactive "@e")
- (save-excursion
- (mouse-set-point event)
- (recenter 0)
- (scroll-right (event-x event))))
-
- (defun mouse-del-char (event)
- "Delete the char pointed to by the mouse."
- (interactive "@e")
- (save-excursion
- (mouse-set-point event)
- (delete-char 1 nil)))
-
- (defun mouse-kill-line (event)
- "Kill the line pointed to by the mouse."
- (interactive "@e")
- (save-excursion
- (mouse-set-point event)
- (kill-line nil)))
-
- (defun mouse-bury-buffer (event)
- "Bury the buffer pointed to by the mouse, thus selecting the next one."
- (interactive "e")
- (save-selected-window
- (select-window (event-window event))
- (bury-buffer)))
-
- (defun mouse-unbury-buffer (event)
- "Unbury and select the most recently buried buffer."
- (interactive "e")
- (save-selected-window
- (select-window (event-window event))
- (let* ((bufs (buffer-list))
- (entry (1- (length bufs)))
- val)
- (while (not (setq val (nth entry bufs)
- val (and (/= (aref (buffer-name val) 0)
- ? )
- val)))
- (setq entry (1- entry)))
- (switch-to-buffer val))))
-
- (defun narrow-window-to-region (m n)
- "Narrow window to region between point and last mark"
- (interactive "r")
- (save-excursion
- (save-restriction
- (if (eq (selected-window) (next-window))
- (split-window))
- (goto-char m)
- (recenter 0)
- (if (eq (selected-window)
- (if (zerop (minibuffer-depth))
- (next-window)))
- ()
- (shrink-window (- (- (window-height) (count-lines m n)) 1))))))
-
- (defun mouse-window-to-region (event)
- "Narrow window to region between cursor and mouse pointer."
- (interactive "@e")
- (let ((point-save (point)))
- (unwind-protect
- (progn (mouse-set-point event)
- (push-mark nil t)
- (sit-for 1))
- (goto-char point-save)
- (narrow-window-to-region (region-beginning) (region-end)))))
-
- (defun mouse-ignore ()
- "Don't do anything."
- (interactive))
-
-
- ;;
- ;; Commands for the scroll bar.
- ;;
-
- ;; #### this stuff has never ever been used and should be junked.
-
- ;; Vertical bar
-
- (defun mouse-scroll-down (nlines)
- "Junk me, please."
- (interactive "@p")
- (scroll-down nlines))
-
- (defun mouse-scroll-up (nlines)
- "Junk me, please."
- (interactive "@p")
- (scroll-up nlines))
-
- (defun mouse-scroll-down-full ()
- "Junk me, please."
- (interactive "@")
- (scroll-down nil))
-
- (defun mouse-scroll-up-full ()
- "Junk me, please."
- (interactive "@")
- (scroll-up nil))
-
- (defun mouse-scroll-move-cursor (nlines)
- "Junk me, please."
- (interactive "@p")
- (move-to-window-line nlines))
-
- (defun mouse-scroll-absolute (event)
- "Junk me, please."
- (interactive "@e")
- (let* ((position (event-x event))
- (length (event-y event))
- (size (buffer-size))
- (scale-factor (max 1 (/ 8000000 size)))
- (newpos (* (/ (* (/ size scale-factor) position) length)
- scale-factor)))
- (goto-char newpos)
- (recenter '(4))))
-
- ;; These scroll while the invoking button is depressed.
-
- (defvar scrolled-lines 0)
- (defvar scroll-speed 1)
-
- (defun incr-scroll-down (event)
- "Junk me, please."
- (interactive "@e")
- (setq scrolled-lines 0)
- (incremental-scroll scroll-speed))
-
- (defun incr-scroll-up (event)
- "Junk me, please."
- (interactive "@e")
- (setq scrolled-lines 0)
- (incremental-scroll (- scroll-speed)))
-
- (defun incremental-scroll (n)
- "Junk me, please."
- (let ((down t))
- (while down
- (sit-for mouse-track-scroll-delay)
- (cond ((input-pending-p)
- (let ((event (next-command-event)))
- (if (or (button-press-event-p event)
- (button-release-event-p event))
- (setq down nil))
- (dispatch-event event))))
- (setq scrolled-lines (1+ (* scroll-speed scrolled-lines)))
- (scroll-down n))))
-
- (defun incr-scroll-stop (event)
- "Junk me, please."
- (interactive "@e")
- (setq scrolled-lines 0)
- (sleep-for 1))
-
-
- (defun mouse-scroll-left (ncolumns)
- "Junk me, please."
- (interactive "@p")
- (scroll-left ncolumns))
-
- (defun mouse-scroll-right (ncolumns)
- "Junk me, please."
- (interactive "@p")
- (scroll-right ncolumns))
-
- (defun mouse-scroll-left-full ()
- "Junk me, please."
- (interactive "@")
- (scroll-left nil))
-
- (defun mouse-scroll-right-full ()
- "Junk me, please."
- (interactive "@")
- (scroll-right nil))
-
- (defun mouse-scroll-move-cursor-horizontally (ncolumns)
- "Junk me, please."
- (interactive "@p")
- (move-to-column ncolumns))
-
- (defun mouse-scroll-absolute-horizontally (event)
- "Junk me, please."
- (interactive "@e")
- (set-window-hscroll (selected-window) 33))
-
-
-
- ;;; mouse/selection tracking
- ;;; generalized mouse-track
-
- (defvar default-mouse-track-normalize-point-function
- 'default-mouse-track-normalize-point
- "Function called to normalize position of point.
- Called with two arguments: TYPE depends on the number of times that the
- mouse has been clicked and is a member of `default-mouse-track-type-list',
- FORWARDP determines the direction in which the point should be moved.")
-
- (defvar mouse-track-down-hook nil
- "Function or functions called when the user presses the mouse.
- This hook is invoked by `mouse-track'; thus, it will not be called
- for any buttons with a different binding. The functions will be
- called with two arguments: the button-press event and a click
- count (see `mouse-track-click-hook').
-
- If any function returns non-nil, the remaining functions will not be
- called.
-
- Note that most applications should take action when the mouse is
- released, not when it is pressed.'")
-
- (defvar mouse-track-drag-hook nil
- "Function or functions called when the user drags the mouse.
- This hook is invoked by `mouse-track'; thus, it will not be called
- for any buttons with a different binding. The functions will be
- called with three arguments: the mouse-motion event, a click
- count (see `mouse-track-click-hook'), and whether the call to
- this hook occurred as a result of a drag timeout (see
- `mouse-track-scroll-delay').
-
- If any function returns non-nil, the remaining functions will not be
- called.
-
- Note that no calls to this function will be made until the user
- initiates a drag (i.e. moves the mouse more than a certain
- threshold in either the X or the Y direction, as defined by
- `mouse-track-x-threshold' and `mouse-track-y-threshold').
-
- See also `mouse-track-drag-up-hook'.")
-
- (defvar mouse-track-drag-up-hook nil
- "Function or functions called when the user finishes a drag.
- This hook is invoked by `mouse-track'; thus, it will not be called
- for any buttons with a different binding. The functions will be
- called with two arguments: the button-press event and a click
- count (see `mouse-track-click-hook').
-
- If any function returns non-nil, the remaining functions will not be
- called.
-
- Note that this hook will not be invoked unless the user has
- initiated a drag, i.e. moved the mouse more than a certain threshold
- (see `mouse-track-drag-hook'). When this function is invoked,
- `mouse-track-drag-hook' will have been invoked at least once.
-
- See also `mouse-track-click-hook'.")
-
- (defvar mouse-track-click-hook nil
- "Function or functions called when the user clicks the mouse.
- `Clicking' means pressing and releasing the mouse without having
- initiated a drag (i.e. without having moved more than a certain
- threshold -- see `mouse-track-drag-hook').
-
- This hook is invoked by `mouse-track'; thus, it will not be called
- for any buttons with a different binding. The functions will be
- called with two arguments: the button-release event and a click
- count, which specifies the number of times that the mouse has been
- clicked in a series of clicks, each of which is separated by at most
- `mouse-track-multi-click-time'. This can be used to implement actions
- that are called on double clicks, triple clicks, etc.
-
- If any function returns non-nil, the remaining functions will not be
- called.
-
- See also `mouse-track-drag-up-hook.")
-
- (defvar mouse-track-up-hook nil
- "Function or functions called when the user releases the mouse.
- This hook is invoked by `mouse-track'; thus, it will not be called
- for any buttons with a different binding. The functions will be
- called with two arguments: the button-release event and a click
- count (see `mouse-track-click-hook').
-
- For many applications, it is more appropriate to use one or both
- of `mouse-track-click-hook' and `mouse-track-drag-up-hook'.")
-
- (defvar mouse-track-cleanup-hook nil
- "Function or functions called when `mouse-track' terminates.
- This hook will be called in all circumstances, even upon a
- non-local exit out of `mouse-track', and so is useful for
- doing cleanup work such as removing extents that may have
- been created during the operation of `mouse-track'.
-
- Unlike all of the other mouse-track hooks, this is a \"normal\"
- hook: the hook functions are called with no arguments, and
- all hook functions are called regardless of their return
- values.")
-
- (defcustom mouse-track-multi-click-time 400
- "*Maximum number of milliseconds allowed between clicks for a multi-click.
- See `mouse-track-click-hook'."
- :type 'integer
- :group 'mouse)
-
- (defcustom mouse-track-scroll-delay 100
- "Maximum of milliseconds between calls to `mouse-track-drag-hook'.
- If the user is dragging the mouse (i.e. the button is held down and
- a drag has been initiated) and does not move the mouse for this many
- milliseconds, the hook will be called with t as the value of the
- WAS-TIMEOUT parameter. This can be used to implement scrolling
- in a selection when the user drags the mouse out the window it
- was in.
-
- A value of nil disables the timeout feature."
- :type '(choice integer (const :tag "Disabled" nil))
- :group 'mouse)
-
- (defvar mouse-track-x-threshold '(face-width 'default)
- "Minimum number of pixels in the X direction for a drag to be initiated.
- If the mouse is moved more than either the X or Y threshold while the
- button is held down (see also `mouse-track-y-threshold'), then a drag
- is initiated; otherwise the gesture is considered to be a click.
- See `mouse-track'.
-
- The value should be either a number of a form to be evaluated to
- produce a number.")
-
- (defvar mouse-track-y-threshold '(face-height 'default)
- "Minimum number of pixels in the Y direction for a drag to be initiated.
- If the mouse is moved more than either the X or Y threshold while the
- button is held down (see also `mouse-track-x-threshold'), then a drag
- is initiated; otherwise the gesture is considered to be a click.
- See `mouse-track'.
-
- The value should be either a number of a form to be evaluated to
- produce a number.")
-
- ;; these variables are private to mouse-track.
- (defvar mouse-track-up-time nil)
- (defvar mouse-track-up-x nil)
- (defvar mouse-track-up-y nil)
- (defvar mouse-track-timeout-id nil)
- (defvar mouse-track-click-count nil)
-
- (defun mouse-track-set-timeout (event)
- (if mouse-track-timeout-id
- (disable-timeout mouse-track-timeout-id))
- (if mouse-track-scroll-delay
- (setq mouse-track-timeout-id
- (add-timeout (/ mouse-track-scroll-delay 1000.0)
- 'mouse-track-scroll-undefined
- (copy-event event)))))
-
- (defun mouse-track-run-hook (hook event &rest args)
- ;; ugh, can't use run-special-hook-with-args because we
- ;; have to get the value using symbol-value-in-buffer.
- ;; Doing a save-excursion/set-buffer is wrong because
- ;; the hook might want to change the buffer, but just
- ;; doing a set-buffer is wrong because the hook might
- ;; not want to change the buffer.
- (let ((buffer (event-buffer event)))
- (if mouse-grabbed-buffer (setq buffer mouse-grabbed-buffer))
- (if buffer
- (let ((value (symbol-value-in-buffer hook buffer nil)))
- (if (and (listp value) (not (eq (car value) 'lambda)))
- (let (retval)
- (while (and value
- (not (setq retval (apply (car value) event args))))
- (setq value (cdr value)))
- retval)
- (apply value event args))))))
-
- (defun mouse-track-scroll-undefined (random)
- ;; the old implementation didn't actually define this function,
- ;; and in normal use it won't ever be called because the timeout
- ;; will either be removed before it fires or will be picked off
- ;; with next-event and not dispatched. However, if you're
- ;; attempting to debug a click-hook (which is pretty damn
- ;; difficult to do), this function may get called.
- )
-
- (defun mouse-track (event)
- "Make a selection with the mouse. This should be bound to a mouse button.
- The behavior of XEmacs during mouse selection is customizable using various
- hooks and variables: see `mouse-track-click-hook', `mouse-track-drag-hook',
- `mouse-track-drag-up-hook', `mouse-track-down-hook', `mouse-track-up-hook',
- `mouse-track-cleanup-hook', `mouse-track-multi-click-time',
- `mouse-track-scroll-delay', `mouse-track-x-threshold', and
- `mouse-track-y-threshold'.
-
- Default handlers are provided to implement standard selecting/positioning
- behavior. You can explicitly request this default behavior, and override
- any custom-supplied handlers, by using the function `mouse-track-default'
- instead of `mouse-track'.
-
- Default behavior is as follows:
-
- If you click-and-drag, the selection will be set to the region between the
- point of the initial click and the point at which you release the button.
- These positions need not be ordered.
-
- If you click-and-release without moving the mouse, then the point is moved
- and the selection is disowned (there will be no selection owner). The mark
- will be set to the previous position of point.
-
- If you double-click, the selection will extend by symbols instead of by
- characters. If you triple-click, the selection will extend by lines.
-
- If you drag the mouse off the top or bottom of the window, you can select
- pieces of text which are larger than the visible part of the buffer; the
- buffer will scroll as necessary.
-
- The selected text becomes the current X Selection. The point will be left
- at the position at which you released the button, and the mark will be left
- at the initial click position."
- (interactive "e")
- (let ((mouse-down t)
- (xthresh (eval mouse-track-x-threshold))
- (ythresh (eval mouse-track-y-threshold))
- (orig-x (event-x-pixel event))
- (orig-y (event-y-pixel event))
- (buffer (event-buffer event))
- (mouse-grabbed-buffer (event-buffer event))
- mouse-moved)
- (if (or (not mouse-track-up-x)
- (not mouse-track-up-y)
- (not mouse-track-up-time)
- (> (- (event-timestamp event) mouse-track-up-time)
- mouse-track-multi-click-time)
- (> (abs (- mouse-track-up-x orig-x)) xthresh)
- (> (abs (- mouse-track-up-y orig-y)) ythresh))
- (setq mouse-track-click-count 1)
- (setq mouse-track-click-count (1+ mouse-track-click-count)))
- (if (not (event-window event))
- (error "Not over a window."))
- (mouse-track-run-hook 'mouse-track-down-hook
- event mouse-track-click-count)
- (unwind-protect
- (while mouse-down
- (setq event (next-event event))
- (cond ((motion-event-p event)
- (if (and (not mouse-moved)
- (or (> (abs (- (event-x-pixel event) orig-x))
- xthresh)
- (> (abs (- (event-y-pixel event) orig-y))
- ythresh)))
- (setq mouse-moved t))
- (if mouse-moved
- (mouse-track-run-hook 'mouse-track-drag-hook
- event mouse-track-click-count nil))
- (mouse-track-set-timeout event))
- ((and (timeout-event-p event)
- (eq (event-function event)
- 'mouse-track-scroll-undefined))
- (if mouse-moved
- (mouse-track-run-hook 'mouse-track-drag-hook
- (event-object event) mouse-track-click-count t))
- (mouse-track-set-timeout (event-object event)))
- ((button-release-event-p event)
- (setq mouse-track-up-time (event-timestamp event))
- (setq mouse-track-up-x (event-x-pixel event))
- (setq mouse-track-up-y (event-y-pixel event))
- (setq mouse-down nil)
- (mouse-track-run-hook 'mouse-track-up-hook
- event mouse-track-click-count)
- (if mouse-moved
- (mouse-track-run-hook 'mouse-track-drag-up-hook
- event mouse-track-click-count)
- (mouse-track-run-hook 'mouse-track-click-hook
- event mouse-track-click-count)))
- ((key-press-event-p event)
- (error "Selection aborted"))
- (t
- (dispatch-event event))))
- ;; protected
- (if mouse-track-timeout-id
- (disable-timeout mouse-track-timeout-id))
- (setq mouse-track-timeout-id nil)
- (and buffer
- (save-excursion
- (set-buffer buffer)
- (run-hooks 'mouse-track-cleanup-hook))))))
-
-
- ;;;;;;;;;;;; default handlers: new version of mouse-track
-
- (defvar default-mouse-track-type nil)
- (defvar default-mouse-track-type-list '(char word line))
- (defvar default-mouse-track-window nil)
- (defvar default-mouse-track-extent nil)
- (defvar default-mouse-track-adjust nil)
- (defvar default-mouse-track-min-anchor nil)
- (defvar default-mouse-track-max-anchor nil)
- (defvar default-mouse-track-result nil)
- (defvar default-mouse-track-down-event nil)
-
- ;; D. Verna Feb. 17 1998
- ;; This function used to assume that when (event-window event) differs from
- ;; window, we have to scroll. This is WRONG, for instance when there are
- ;; toolbars on the side, in which case window-event returns nil.
- (defun default-mouse-track-set-point-in-window (event window)
- (if (event-over-modeline-p event)
- nil ;; Scroll
- ;; Not over a modeline
- (if (eq (event-window event) window)
- (let ((p (event-closest-point event)))
- (if (or (not p) (not (pos-visible-in-window-p p window)))
- nil ;; Scroll
- (mouse-set-point event)
- t))
- ;; Not over a modeline, not the same window. Check if the Y position
- ;; is still overlapping the original window.
- (let* ((edges (window-pixel-edges window))
- (row (event-y-pixel event))
- (text-start (nth 1 edges))
- (text-end (+ (nth 3 edges))))
- (if (or (< row text-start)
- (> row text-end))
- nil ;; Scroll
- ;; The Y pos in overlapping the original window. Check however if
- ;; the position is really visible, because there could be a
- ;; scrollbar or a modeline at this place.
- ;; Find the mean line height (height / lines nb), and approximate
- ;; the line number for Y pos.
- (select-window window)
- (let ((line (/ (* (- row text-start) (window-height))
- (- text-end text-start))))
- (if (not (save-excursion
- (goto-char (window-start))
- (pos-visible-in-window-p
- (point-at-bol (+ 1 line)))))
- nil ;; Scroll
- ;; OK, we can go to that position
- (goto-char (window-start))
- (forward-line line)
- ;; On the right side: go to end-of-line.
- (when (>= (event-x-pixel event) (nth 2 edges))
- (goto-char (point-at-eol)))
- t))))
- )))
-
-
- (defun default-mouse-track-scroll-and-set-point (event window)
- (select-window window)
- (let ((edges (window-pixel-edges window))
- (row (event-y-pixel event))
- (height (face-height 'default)))
- (cond ((< (abs (- row (nth 1 edges))) (abs (- row (nth 3 edges))))
- ;; closer to window's top than to bottom, so move up
- (let ((delta (max 1 (/ (- (nth 1 edges) row) height))))
- (condition-case () (scroll-down delta) (error))
- (goto-char (window-start))))
- ((>= (point) (point-max)))
- (t
- ;; scroll by one line if over the modeline or a clipped line
- (let ((delta (if (or (event-over-modeline-p event)
- (< row (nth 3 edges)))
- 1
- (+ (/ (- row (nth 3 edges)) height) 1)))
- (close-pos (event-closest-point event)))
- (condition-case () (scroll-up delta) (error))
- (if (and close-pos (pos-visible-in-window-p close-pos))
- (goto-char close-pos)
- (goto-char (window-end))
- (vertical-motion delta)
- ;; window-end reports the end of the clipped line, even if
- ;; scroll-on-clipped-lines is t. compensate.
- ;; (If window-end gets fixed this can be removed.)
- (if (not (pos-visible-in-window-p (max (1- (point))
- (point-min))))
- (vertical-motion -1))
- (condition-case () (backward-char 1)
- (error (end-of-line)))))))))
-
-
- ;; This remembers the last position at which the user clicked, for the
- ;; benefit of mouse-track-adjust (for example, button1; scroll until the
- ;; position of the click is off the frame; then Sh-button1 to select the
- ;; new region.
- (defvar default-mouse-track-previous-point nil)
-
- (defun default-mouse-track-set-point (event window)
- (if (default-mouse-track-set-point-in-window event window)
- nil
- (default-mouse-track-scroll-and-set-point event window)))
-
- (defsubst default-mouse-track-beginning-of-word (symbolp)
- (let ((word-constituent (cond ((eq symbolp t) "\\w\\|\\s_\\|\\s'")
- ((null symbolp) "\\w")
- (t "[^ \t\n]")))
- (white-space "[ \t]"))
- (cond ((bobp) nil)
- ((looking-at word-constituent)
- (backward-char)
- (while (and (not (bobp)) (looking-at word-constituent))
- (backward-char))
- (if (or (not (bobp)) (not (looking-at word-constituent)))
- (forward-char)))
- ((looking-at white-space)
- (backward-char)
- (while (looking-at white-space)
- (backward-char))
- (forward-char)))))
-
- (defun default-mouse-track-end-of-word (symbolp)
- (let ((word-constituent (cond ((eq symbolp t) "\\w\\|\\s_\\|\\s'")
- ((null symbolp) "\\w")
- (t "[^ \t\n]")))
- (white-space "[ \t]"))
- (cond ((looking-at word-constituent) ; word or symbol constituent
- (while (looking-at word-constituent)
- (forward-char)))
- ((looking-at white-space) ; word or symbol constituent
- (while (looking-at white-space)
- (forward-char))))))
-
- (defun default-mouse-track-normalize-point (type forwardp)
- (cond ((eq type 'word)
- ;; trap the beginning and end of buffer errors
- (condition-case ()
- (progn
- (setq type (char-syntax (char-after (point))))
- (if forwardp
- (if (= type ?\()
- (goto-char (scan-sexps (point) 1))
- (if (= type ?\))
- (forward-char 1)
- (default-mouse-track-end-of-word t)))
- (if (= type ?\))
- (goto-char (scan-sexps (1+ (point)) -1))
- (default-mouse-track-beginning-of-word t))))
- (error ())))
- ((eq type 'line)
- (if forwardp (end-of-line) (beginning-of-line)))
- ((eq type 'buffer)
- (if forwardp (end-of-buffer) (beginning-of-buffer)))))
-
- (defun default-mouse-track-next-move (min-anchor max-anchor extent)
- (let ((anchor (if (<= (point) min-anchor) max-anchor min-anchor)))
- (funcall default-mouse-track-normalize-point-function
- default-mouse-track-type (> (point) anchor))
- (if (consp extent)
- (default-mouse-track-next-move-rect anchor (point) extent)
- (if extent
- (if (<= anchor (point))
- (set-extent-endpoints extent anchor (point))
- (set-extent-endpoints extent (point) anchor))))))
-
- (defun default-mouse-track-next-move-rect (start end extents &optional pad-p)
- (if (< end start)
- (let ((tmp start)) (setq start end end tmp)))
- (cond
- ((= start end) ; never delete the last remaining extent
- (mapcar 'delete-extent (cdr extents))
- (setcdr extents nil)
- (set-extent-endpoints (car extents) start start))
- (t
- (let ((indent-tabs-mode nil) ; if pad-p, don't use tabs
- (rest extents)
- left right last p)
- (save-excursion
- (save-restriction
- (goto-char end)
- (setq right (current-column))
- (goto-char start)
- (setq left (current-column))
- (if (< right left)
- (let ((tmp left))
- (setq left right right tmp)
- (setq start (- start (- right left))
- end (+ end (- right left)))))
- ;; End may have been set to a value greater than point-max if drag
- ;; or movement extends to end of buffer, so reset it.
- (setq end (min end (point-max)))
- (beginning-of-line)
- (narrow-to-region (point) end)
- (goto-char start)
- (while (and rest (not (eobp)))
- (setq p (point))
- (move-to-column right pad-p)
- (set-extent-endpoints (car rest) p (point))
- ;; this code used to look at the return value
- ;; of forward-line, but that doesn't work because
- ;; forward-line has bogus behavior: If you're on
- ;; the last line of a buffer but not at the very
- ;; end, forward-line will move you to the very
- ;; end and return 0 instead of 1, like it should.
- ;; the result was frequent infinite loops here,
- ;; creating very large numbers of extents at
- ;; the same position. There was an N^2 sorting
- ;; algorithm in extents.c for extents at a
- ;; particular position, and the result was very
- ;; bad news.
- (forward-line 1)
- (if (not (eobp))
- (move-to-column left pad-p))
- (setq last rest
- rest (cdr rest)))
- (cond (rest
- (mapcar 'delete-extent rest)
- (setcdr last nil))
- ((not (eobp))
- (while (not (eobp))
- (setq p (point))
- (move-to-column right pad-p)
- (let ((e (make-extent p (point))))
- (set-extent-face e (extent-face (car extents)))
- (set-extent-priority e (extent-priority (car extents)))
- (setcdr last (cons e nil))
- (setq last (cdr last)))
- (forward-line 1)
- (if (not (eobp))
- (move-to-column left pad-p))
- )))))
- ))))
-
- (defun default-mouse-track-has-selection-p (buffer)
- (and (or (not (eq 'x (console-type (selected-console))))
- (x-selection-owner-p))
- (extent-live-p primary-selection-extent)
- (not (extent-detached-p primary-selection-extent))
- (eq buffer (extent-object primary-selection-extent))))
-
- (defun default-mouse-track-anchor (adjust previous-point)
- (if adjust
- (if (default-mouse-track-has-selection-p (current-buffer))
- (let ((start (extent-start-position primary-selection-extent))
- (end (extent-end-position primary-selection-extent)))
- (cond ((< (point) start) end)
- ((> (point) end) start)
- ((> (- (point) start) (- end (point))) start)
- (t end)))
- previous-point)
- (point)))
-
- (defun default-mouse-track-maybe-own-selection (pair type)
- (let ((start (car pair))
- (end (cdr pair)))
- (or (= start end) (push-mark (if (= (point) start) end start)))
- (cond (zmacs-regions
- (if (= start end)
- nil
- ;; #### UTTER KLUDGE.
- ;; If we don't have this sit-for here, then triple-clicking
- ;; will result in the line not being highlighted as it
- ;; should. What appears to be happening is this:
- ;;
- ;; -- each time the button goes down, the selection is
- ;; disowned (see comment "remove the existing selection
- ;; to unclutter the display", below).
- ;; -- this causes a SelectionClear event to be sent to
- ;; XEmacs.
- ;; -- each time the button goes up except the first, the
- ;; selection is owned again.
- ;; -- later, XEmacs processes the SelectionClear event.
- ;; The selection code attempts to keep track of the
- ;; time that it last asserted the selection, and
- ;; compare it to the time of the SelectionClear event,
- ;; to see if it's a bogus notification or not (as
- ;; is the case here). However, for some unknown
- ;; reason this doesn't work in the triple-clicking
- ;; case, and the selection code bogusly thinks this
- ;; SelectionClear event is the real thing.
- ;; -- putting the sit-for in causes the pending
- ;; SelectionClear events to get processed before
- ;; the selection is reasserted, so everything works
- ;; out OK.
- ;;
- ;; Presumably(?) this means there is a weird timing bug
- ;; in the selection code, but there's not a chance in hell
- ;; that I have the patience to track it down. Blame the
- ;; designers of X for fucking everything up so badly.
- ;;
- ;; This was originally a sit-for 0 but that wasn't
- ;; sufficient to make things work. Even this isn't
- ;; always sufficient but it seems to give something
- ;; approaching a 99% success rate. Making it higher yet
- ;; would help guarantee success with the price that the
- ;; delay would start to become noticable.
- ;;
- (sit-for 0.15 t)
- (zmacs-activate-region)))
- ((eq 'x (console-type (selected-console)))
- (if (= start end)
- (x-disown-selection type)
- (if (consp default-mouse-track-extent)
- ;; own the rectangular region
- ;; this is a hack
- (let ((r default-mouse-track-extent))
- (save-excursion
- (set-buffer (get-buffer-create " *rect yank temp buf*"))
- (while r
- (insert (extent-string (car r)) "\n")
- (setq r (cdr r)))
- (x-own-selection (buffer-substring (point-min) (point-max)))
- (kill-buffer (current-buffer))))
- (x-own-selection (cons (set-marker (make-marker) start)
- (set-marker (make-marker) end))
- type)))))
- (if (and (eq 'x (console-type (selected-console)))
- (not (= start end)))
- ;; I guess cutbuffers should do something with rectangles too.
- ;; does anybody use them?
- (x-store-cutbuffer (buffer-substring start end)))))
-
- (defun default-mouse-track-deal-with-down-event (click-count)
- (let ((event default-mouse-track-down-event))
- (if (null event) nil
- (select-frame (event-frame event))
- (let ((adjust default-mouse-track-adjust)
- ;; ####When you click on the splash-screen,
- ;; event-{closest-,}point can be out of bounds. Should
- ;; event-closest-point really be allowed to return a bad
- ;; position like that? Maybe pixel_to_glyph_translation
- ;; needs to invalidate its cache when the buffer changes.
- ;; -dkindred@cs.cmu.edu
- (close-pos (save-excursion
- (set-buffer (event-buffer event))
- (let ((p (event-closest-point event)))
- (and p (min (max p (point-min)) (point-max))))))
- extent previous-point)
-
- (if (not (event-window event))
- (error "not over window?"))
- (setq default-mouse-track-type
- (nth (mod (1- click-count)
- (length default-mouse-track-type-list))
- default-mouse-track-type-list))
- (setq default-mouse-track-window (event-window event))
- ;; Note that the extent used here is NOT the extent which
- ;; ends up as the value of zmacs-region-extent - this one is used
- ;; just during mouse-dragging.
- (setq default-mouse-track-extent
- (make-extent close-pos close-pos (event-buffer event)))
- (setq extent default-mouse-track-extent)
- (set-extent-face extent 'zmacs-region)
- ;; While the selection is being dragged out, give the selection extent
- ;; slightly higher priority than any mouse-highlighted extent, so that
- ;; the exact endpoints of the selection will be visible while the mouse
- ;; is down. Normally, the selection and mouse highlighting have the
- ;; same priority, so that conflicts between the two of them are
- ;; resolved by the usual size-and-endpoint-comparison method.
- (set-extent-priority extent (1+ mouse-highlight-priority))
- (if mouse-track-rectangle-p
- (setq default-mouse-track-extent
- (list default-mouse-track-extent)))
-
- (setq previous-point
- (if (and adjust
- (markerp default-mouse-track-previous-point)
- (eq (current-buffer)
- (marker-buffer default-mouse-track-previous-point)))
- (marker-position default-mouse-track-previous-point)
- (point)))
- (default-mouse-track-set-point event default-mouse-track-window)
- (if (not adjust)
- (if (markerp default-mouse-track-previous-point)
- (set-marker default-mouse-track-previous-point (point))
- (setq default-mouse-track-previous-point (point-marker))))
- ;;
- ;; adjust point to a word or line boundary if appropriate
- (let ((anchor (default-mouse-track-anchor adjust previous-point)))
- (setq default-mouse-track-min-anchor
- (save-excursion (goto-char anchor)
- (funcall
- default-mouse-track-normalize-point-function
- default-mouse-track-type nil)
- (point)))
- (setq default-mouse-track-max-anchor
- (save-excursion (goto-char anchor)
- (funcall
- default-mouse-track-normalize-point-function
- default-mouse-track-type t)
- (point))))
- ;;
- ;; remove the existing selection to unclutter the display
- (if (not adjust)
- (cond (zmacs-regions
- (zmacs-deactivate-region))
- ((eq 'x (console-type (selected-console)))
- (x-disown-selection)))))
- (setq default-mouse-track-down-event nil))))
-
- (defun default-mouse-track-down-hook (event click-count)
- (setq default-mouse-track-down-event (copy-event event))
- nil)
-
- (defun default-mouse-track-cleanup-extents-hook ()
- (remove-hook 'pre-command-hook 'default-mouse-track-cleanup-extents-hook)
- (let ((extent default-mouse-track-extent))
- (if (consp extent) ; rectangle-p
- (mapcar 'delete-extent extent)
- (if extent
- (delete-extent extent)))))
-
- (defun default-mouse-track-cleanup-hook ()
- (if zmacs-regions
- (funcall 'default-mouse-track-cleanup-extents-hook)
- (let ((extent default-mouse-track-extent)
- (func #'(lambda (e)
- (and (extent-live-p e)
- (set-extent-face e 'primary-selection)))))
- (add-hook 'pre-command-hook 'default-mouse-track-cleanup-extents-hook)
- (if (consp extent) ; rectangle-p
- (mapcar func extent)
- (if extent
- (funcall func extent))))))
-
- (defun default-mouse-track-cleanup-extent ()
- (let ((dead-func
- (function (lambda (x)
- (or (not (extent-live-p x))
- (extent-detached-p x)))))
- (extent default-mouse-track-extent))
- (if (consp extent)
- (if (funcall dead-func extent)
- (let (newval)
- (mapcar (function (lambda (x)
- (if (not (funcall dead-func x))
- (setq newval (cons x newval)))))
- extent)
- (setq default-mouse-track-extent (nreverse newval))))
- (if (funcall dead-func extent)
- (setq default-mouse-track-extent nil)))))
-
- (defun default-mouse-track-drag-hook (event click-count was-timeout)
- (default-mouse-track-deal-with-down-event click-count)
- (default-mouse-track-set-point event default-mouse-track-window)
- (default-mouse-track-cleanup-extent)
- (default-mouse-track-next-move default-mouse-track-min-anchor
- default-mouse-track-max-anchor
- default-mouse-track-extent)
- t)
-
- (defun default-mouse-track-return-dragged-selection (event)
- (default-mouse-track-cleanup-extent)
- (let ((extent default-mouse-track-extent)
- result)
- (default-mouse-track-set-point-in-window event default-mouse-track-window)
- (default-mouse-track-next-move default-mouse-track-min-anchor
- default-mouse-track-max-anchor
- extent)
- (cond ((consp extent) ; rectangle-p
- (let ((first (car extent))
- (last (car (setq extent (nreverse extent)))))
- ;; nreverse is destructive so we need to reset this
- (setq default-mouse-track-extent extent)
- (setq result (cons (extent-start-position first)
- (extent-end-position last)))
- ;; kludge to fix up region when dragging backwards...
- (if (and (/= (point) (extent-start-position first))
- (/= (point) (extent-end-position last))
- (= (point) (extent-end-position first)))
- (goto-char (car result)))))
- (extent
- (setq result (cons (extent-start-position extent)
- (extent-end-position extent)))))
- ;; Minor kludge: if we're selecting in line-mode, include the
- ;; final newline. It's hard to do this in *-normalize-point.
- (if (and result (eq default-mouse-track-type 'line))
- (let ((end-p (= (point) (cdr result))))
- (goto-char (cdr result))
- (if (not (eobp))
- (setcdr result (1+ (cdr result))))
- (goto-char (if end-p (cdr result) (car result)))))
- ;;; ;; Minor kludge sub 2. If in char mode, and we drag the
- ;;; ;; mouse past EOL, include the newline.
- ;;; ;;
- ;;; ;; Major problem: can't easily distinguish between being
- ;;; ;; just past the last char on a line, and well past it,
- ;;; ;; to determine whether or not to include it in the region
- ;;; ;;
- ;;; (if nil ; (eq default-mouse-track-type 'char)
- ;;; (let ((after-end-p (and (not (eobp))
- ;;; (eolp)
- ;;; (> (point) (car result)))))
- ;;; (if after-end-p
- ;;; (progn
- ;;; (setcdr result (1+ (cdr result)))
- ;;; (goto-char (cdr result))))))
- result))
-
- (defun default-mouse-track-drag-up-hook (event click-count)
- (let ((result (default-mouse-track-return-dragged-selection event)))
- (if result
- (default-mouse-track-maybe-own-selection result 'PRIMARY)))
- t)
-
- (defun default-mouse-track-click-hook (event click-count)
- (default-mouse-track-drag-hook event click-count nil)
- (default-mouse-track-drag-up-hook event click-count)
- t)
-
- (add-hook 'mouse-track-down-hook 'default-mouse-track-down-hook)
- (add-hook 'mouse-track-drag-hook 'default-mouse-track-drag-hook)
- (add-hook 'mouse-track-drag-up-hook 'default-mouse-track-drag-up-hook)
- (add-hook 'mouse-track-click-hook 'default-mouse-track-click-hook)
- (add-hook 'mouse-track-cleanup-hook 'default-mouse-track-cleanup-hook)
-
-
- ;;;;;;;;;;;; other mouse-track stuff (mostly associated with the
- ;;;;;;;;;;;; default handlers)
-
- (defun mouse-track-default (event)
- "Invoke `mouse-track' with only the default handlers active."
- (interactive "e")
- (let ((mouse-track-down-hook 'default-mouse-track-down-hook)
- (mouse-track-drag-hook 'default-mouse-track-drag-hook)
- (mouse-track-drag-up-hook 'default-mouse-track-drag-up-hook)
- (mouse-track-click-hook 'default-mouse-track-click-hook)
- (mouse-track-cleanup-hook 'default-mouse-track-cleanup-hook))
- (mouse-track event)))
-
- (defun mouse-track-do-rectangle (event)
- "Like `mouse-track' but selects rectangles instead of regions."
- (interactive "e")
- (let ((mouse-track-rectangle-p t))
- (mouse-track event)))
-
- (defun mouse-track-adjust (event)
- "Extend the existing selection. This should be bound to a mouse button.
- The selection will be enlarged or shrunk so that the point of the mouse
- click is one of its endpoints. This function in fact behaves fairly
- similarly to `mouse-track', but begins by extending the existing selection
- (or creating a new selection from the previous text cursor position to
- the current mouse position) instead of creating a new, empty selection.
-
- The mouse-track handlers are run from this command just like from
- `mouse-track'. Therefore, do not call this command from a mouse-track
- handler!"
- (interactive "e")
- (let ((default-mouse-track-adjust t))
- (mouse-track event)))
-
- (defun mouse-track-adjust-default (event)
- "Extend the existing selection, using only the default handlers.
- This is just like `mouse-track-adjust' but will override any
- custom mouse-track handlers that the user may have installed."
- (interactive "e")
- (let ((default-mouse-track-adjust t))
- (mouse-track-default event)))
-
- (defvar mouse-track-insert-selected-region nil)
-
- (defun mouse-track-insert-drag-up-hook (event click-count)
- (setq mouse-track-insert-selected-region
- (default-mouse-track-return-dragged-selection event)))
-
- (defun mouse-track-insert (event &optional delete)
- "Make a selection with the mouse and insert it at point.
- This is exactly the same as the `mouse-track' command on \\[mouse-track],
- except that point is not moved; the selected text is immediately inserted
- after being selected\; and the selection is immediately disowned afterwards."
- (interactive "*e")
- (setq mouse-track-insert-selected-region nil)
- (let ((mouse-track-drag-up-hook 'mouse-track-insert-drag-up-hook)
- (mouse-track-click-hook 'mouse-track-insert-click-hook)
- s)
- (save-excursion
- (save-window-excursion
- (mouse-track event)
- (if (consp mouse-track-insert-selected-region)
- (let ((pair mouse-track-insert-selected-region))
- (setq s (prog1
- (buffer-substring (car pair) (cdr pair))
- (if delete
- (kill-region (car pair) (cdr pair)))))))))
- (or (null s) (equal s "") (insert s))))
-
- (defun mouse-track-insert-click-hook (event click-count)
- (default-mouse-track-drag-hook event click-count nil)
- (mouse-track-insert-drag-up-hook event click-count)
- t)
-
- (defun mouse-track-delete-and-insert (event)
- "Make a selection with the mouse and insert it at point.
- This is exactly the same as the `mouse-track' command on \\[mouse-track],
- except that point is not moved; the selected text is immediately inserted
- after being selected\; and the text of the selection is deleted."
- (interactive "*e")
- (mouse-track-insert event t))
-
- ;;;;;;;;;;;;;;;;;;;;;;;;
-
-
- (defvar inhibit-help-echo nil
- "Inhibits display of `help-echo' extent properties in the minibuffer.")
- (defvar last-help-echo-object nil)
- (defvar help-echo-owns-message nil)
-
- (defun clear-help-echo (&optional ignored-frame)
- (if help-echo-owns-message
- (progn
- (setq help-echo-owns-message nil
- last-help-echo-object nil)
- (clear-message 'help-echo))))
-
- (defun show-help-echo (mess)
- ;; (clear-help-echo)
- (setq help-echo-owns-message t)
- (display-message 'help-echo mess))
-
- (add-hook 'mouse-leave-frame-hook 'clear-help-echo)
-
- (defun default-mouse-motion-handler (event)
- "For use as the value of `mouse-motion-handler'.
- This implements the various pointer-shape variables,
- as well as extent highlighting, help-echo, toolbar up/down,
- and `mode-motion-hook'."
- (let* ((frame (or (event-frame event) (selected-frame)))
- (window (event-window event))
- (buffer (event-buffer event))
- (point (and buffer (event-point event)))
- (modeline-point (and buffer (event-modeline-position event)))
- (extent (and point (extent-at point buffer 'mouse-face)))
- (glyph1 (event-glyph-extent event))
- (glyph (and glyph1 (extent-live-p glyph1) glyph1))
- (user-pointer1 (or (and glyph (extent-property glyph 'pointer))
- (and point
- (condition-case nil
- (extent-at point buffer 'pointer)
- (error nil)))
- (and modeline-point
- (condition-case nil
- (extent-at modeline-point
- (symbol-value-in-buffer
- 'generated-modeline-string
- buffer) 'pointer)))))
- (user-pointer (and user-pointer1 (extent-live-p user-pointer1)
- (extent-property user-pointer1 'pointer)))
- (button (event-toolbar-button event))
- (help (or (and glyph (extent-property glyph 'help-echo) glyph)
- (and button (not (null (toolbar-button-help-string button)))
- button)
- (and point
- (condition-case nil
- (extent-at point buffer 'help-echo)
- (error nil)))
- (and modeline-point
- (condition-case nil
- (extent-at modeline-point
- (symbol-value-in-buffer
- 'generated-modeline-string
- buffer) 'help-echo)))))
- ;; vars is a list of glyph variables to check for a pointer
- ;; value.
- (vars (cond
- ;; Checking if button is non-nil is not sufficent
- ;; since the pointer could be over a blank portion
- ;; of the toolbar.
- ((event-over-toolbar-p event)
- '(toolbar-pointer-glyph nontext-pointer-glyph
- text-pointer-glyph))
- ((or extent glyph)
- '(selection-pointer-glyph text-pointer-glyph))
- ((event-over-modeline-p event)
- '(modeline-pointer-glyph nontext-pointer-glyph
- text-pointer-glyph))
- (point '(text-pointer-glyph))
- (buffer '(nontext-pointer-glyph text-pointer-glyph))
- (t '(modeline-pointer-glyph nontext-pointer-glyph
- text-pointer-glyph))))
- pointer)
- (if (and user-pointer (glyphp user-pointer))
- (setq vars (cons 'user-pointer vars)))
- (while (and vars (not (pointer-image-instance-p pointer)))
- (setq pointer (glyph-image-instance (symbol-value (car vars))
- (or window frame))
- vars (cdr vars)))
-
- (if (pointer-image-instance-p pointer)
- (set-frame-pointer frame pointer))
-
- ;; If last-pressed-toolbar-button is not nil, then check and see
- ;; if we have moved to a new button and adjust the down flags
- ;; accordingly.
- (if (and (featurep 'toolbar) toolbar-active)
- (if (not (eq last-pressed-toolbar-button button))
- (progn
- (release-previous-toolbar-button event)
- (and button (press-toolbar-button event)))))
-
- (cond (extent (highlight-extent extent t))
- (glyph (highlight-extent glyph t))
- (t (highlight-extent nil nil)))
- (cond ((extentp help)
- (or inhibit-help-echo
- (eq help last-help-echo-object) ;save some time
- (let ((hprop (extent-property help 'help-echo)))
- (setq last-help-echo-object help)
- (or (stringp hprop)
- (setq hprop (funcall hprop help)))
- (and hprop (show-help-echo hprop)))))
- ((and (featurep 'toolbar)
- (toolbar-button-p help)
- (toolbar-button-enabled-p help))
- (or (not toolbar-help-enabled)
- (eq help last-help-echo-object) ;save some time
- (let ((hstring (toolbar-button-help-string button)))
- (setq last-help-echo-object help)
- (or (stringp hstring)
- (setq hstring (funcall hstring help)))
- (show-help-echo hstring))))
- (last-help-echo-object
- (clear-help-echo)))
- (if mouse-grabbed-buffer (setq buffer mouse-grabbed-buffer))
- (if (and buffer (symbol-value-in-buffer 'mode-motion-hook buffer nil))
- (save-window-excursion
- (set-buffer buffer)
- (run-hook-with-args 'mode-motion-hook event)
-
- ;; If the mode-motion-hook created a highlightable extent around
- ;; the mouse-point, highlight it right away. Otherwise it wouldn't
- ;; be highlighted until the *next* motion event came in.
- (if (and point
- (null extent)
- (setq extent (extent-at point
- (event-buffer event) ; not buffer
- 'mouse-face)))
- (highlight-extent extent t)))))
- nil)
-
- (setq mouse-motion-handler 'default-mouse-motion-handler)
-