mouse.el 51.4 KB
Newer Older
Eric S. Raymond's avatar
Eric S. Raymond committed
1
;;; mouse.el --- window system-independent mouse support.
Eric S. Raymond's avatar
Eric S. Raymond committed
2

Karl Heuer's avatar
Karl Heuer committed
3
;;; Copyright (C) 1993, 1994 Free Software Foundation, Inc.
Eric S. Raymond's avatar
Eric S. Raymond committed
4

Eric S. Raymond's avatar
Eric S. Raymond committed
5 6 7
;; Maintainer: FSF
;; Keywords: hardware

Jim Blandy's avatar
Jim Blandy committed
8
;;; This file is part of GNU Emacs.
Richard M. Stallman's avatar
Richard M. Stallman committed
9

Jim Blandy's avatar
Jim Blandy committed
10 11
;;; GNU Emacs is free software; you can redistribute it and/or modify
;;; it under the terms of the GNU General Public License as published by
Jim Blandy's avatar
Jim Blandy committed
12
;;; the Free Software Foundation; either version 2, or (at your option)
Jim Blandy's avatar
Jim Blandy committed
13
;;; any later version.
Richard M. Stallman's avatar
Richard M. Stallman committed
14

Jim Blandy's avatar
Jim Blandy committed
15 16 17 18
;;; GNU Emacs 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.
Richard M. Stallman's avatar
Richard M. Stallman committed
19

Jim Blandy's avatar
Jim Blandy committed
20 21 22
;;; 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.
Richard M. Stallman's avatar
Richard M. Stallman committed
23

24 25 26 27 28 29 30 31
;;; Commentary:

;; This package provides various useful commands (including help
;; system access) through the mouse.  All this code assumes that mouse
;; interpretation has been abstracted into Emacs input events.
;;
;; The code is rather X-dependent.

32 33
;;; Code:

Jim Blandy's avatar
Jim Blandy committed
34
;;; Utility functions.
Richard M. Stallman's avatar
Richard M. Stallman committed
35

Jim Blandy's avatar
Jim Blandy committed
36 37
;;; Indent track-mouse like progn.
(put 'track-mouse 'lisp-indent-function 0)
Richard M. Stallman's avatar
Richard M. Stallman committed
38

39 40
(defvar mouse-yank-at-point nil
  "*If non-nil, mouse yank commands yank at point instead of at click.")
Jim Blandy's avatar
Jim Blandy committed
41

42 43 44 45 46 47
(defun mouse-minibuffer-check (event)
  (let ((w (posn-window (event-start event))))
    (and (window-minibuffer-p w)
	 (not (minibuffer-window-active-p w))
	 (error "Minibuffer window is not active"))))

Jim Blandy's avatar
Jim Blandy committed
48
(defun mouse-delete-window (click)
49
  "Delete the window you click on.
Jim Blandy's avatar
Jim Blandy committed
50
This must be bound to a mouse click."
Jim Blandy's avatar
Jim Blandy committed
51
  (interactive "e")
52
  (mouse-minibuffer-check click)
53
  (delete-window (posn-window (event-start click))))
Jim Blandy's avatar
Jim Blandy committed
54

55 56 57
(defun mouse-select-window (click)
  "Select the window clicked on; don't move point."
  (interactive "e")
58
  (mouse-minibuffer-check click)
59 60 61 62 63 64 65 66 67
  (let ((oframe (selected-frame))
	(frame (window-frame (posn-window (event-start click)))))
    (select-window (posn-window (event-start click)))
    (raise-frame frame)
    (select-frame frame)
    (or (eq frame oframe)
	(set-mouse-position (selected-frame) (1- (frame-width)) 0))
    (unfocus-frame)))

68 69 70
(defun mouse-tear-off-window (click)
  "Delete the window clicked on, and create a new frame displaying its buffer."
  (interactive "e")
71
  (mouse-minibuffer-check click)
72 73
  (let* ((window (posn-window (event-start click)))
	 (buf (window-buffer window))
74
	 (frame (make-frame)))
75 76 77 78
    (select-frame frame)
    (switch-to-buffer buf)
    (delete-window window)))

79
(defun mouse-delete-other-windows ()
80
  "Delete all window except the one you click on."
81
  (interactive "@")
Jim Blandy's avatar
Jim Blandy committed
82
  (delete-other-windows))
Richard M. Stallman's avatar
Richard M. Stallman committed
83

Jim Blandy's avatar
Jim Blandy committed
84 85 86 87
(defun mouse-split-window-vertically (click)
  "Select Emacs window mouse is on, then split it vertically in half.
The window is split at the line clicked on.
This command must be bound to a mouse click."
88
  (interactive "@e")
89
  (mouse-minibuffer-check click)
90 91
  (let ((start (event-start click)))
    (select-window (posn-window start))
92
    (let ((new-height (1+ (cdr (posn-col-row (event-end click)))))
93 94 95
	  (first-line window-min-height)
	  (last-line (- (window-height) window-min-height)))
      (if (< last-line first-line)
96
	  (error "Window too short to split")
97 98
	(split-window-vertically
	 (min (max new-height first-line) last-line))))))
Jim Blandy's avatar
Jim Blandy committed
99

100 101 102 103 104
(defun mouse-split-window-horizontally (click)
  "Select Emacs window mouse is on, then split it horizontally in half.
The window is split at the column clicked on.
This command must be bound to a mouse click."
  (interactive "@e")
105
  (mouse-minibuffer-check click)
106 107 108 109 110 111
  (let ((start (event-start click)))
    (select-window (posn-window start))
    (let ((new-width (1+ (car (posn-col-row (event-end click)))))
	  (first-col window-min-width)
	  (last-col (- (window-width) window-min-width)))
      (if (< last-col first-col)
112
	  (error "Window too narrow to split")
113 114
	(split-window-horizontally
	 (min (max new-width first-col) last-col))))))
115

116
(defun mouse-set-point (event)
Jim Blandy's avatar
Jim Blandy committed
117
  "Move point to the position clicked on with the mouse.
118
This should be bound to a mouse click event type."
Jim Blandy's avatar
Jim Blandy committed
119
  (interactive "e")
120
  (mouse-minibuffer-check event)
121 122 123
  ;; Use event-end in case called from mouse-drag-region.
  ;; If EVENT is a click, event-end and event-start give same value.
  (let ((posn (event-end event)))
124 125
    (if (not (windowp (posn-window posn)))
	(error "Cursor not in text area of window"))
126 127 128
    (select-window (posn-window posn))
    (if (numberp (posn-point posn))
	(goto-char (posn-point posn)))))
Jim Blandy's avatar
Jim Blandy committed
129

130
(defun mouse-set-region (click)
131
  "Set the region to the text dragged over, and copy to kill ring.
132
This should be bound to a mouse drag event."
133
  (interactive "e")
134
  (mouse-minibuffer-check click)
135 136 137 138 139
  (let ((posn (event-start click))
	(end (event-end click)))
    (select-window (posn-window posn))
    (if (numberp (posn-point posn))
	(goto-char (posn-point posn)))
140 141 142 143
    ;; If mark is highlighted, no need to bounce the cursor.
    (or (and transient-mark-mode
	     (eq (framep (selected-frame)) 'x))
	(sit-for 1))
144
    (push-mark)
145
    (set-mark (point))
146
    (if (numberp (posn-point end))
147 148 149 150 151
	(goto-char (posn-point end)))
    ;; Don't set this-command to kill-region, so that a following
    ;; C-w will not double the text in the kill ring.
    (let (this-command)
      (copy-region-as-kill (mark) (point)))))
152

153 154 155 156 157 158 159 160 161
(defvar mouse-scroll-delay 0.25
  "*The pause between scroll steps caused by mouse drags, in seconds.
If you drag the mouse beyond the edge of a window, Emacs scrolls the
window to bring the text beyond that edge into view, with a delay of
this many seconds between scroll steps.  Scrolling stops when you move
the mouse back into the window, or release the button.
This variable's value may be non-integral.
Setting this to zero causes Emacs to scroll as fast as it can.")

162 163
(defun mouse-scroll-subr (window jump &optional overlay start)
  "Scroll the window WINDOW, JUMP lines at a time, until new input arrives.
164 165 166
If OVERLAY is an overlay, let it stretch from START to the far edge of
the newly visible text.
Upon exit, point is at the far edge of the newly visible text."
167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186
  (let ((opoint (point)))
    (while (progn
	     (goto-char (window-start window))
	     (if (not (zerop (vertical-motion jump window)))
		 (progn
		   (set-window-start window (point))
		   (if (natnump jump)
		       (progn
			 (goto-char (window-end window))
			 ;; window-end doesn't reflect the window's new
			 ;; start position until the next redisplay.  Hurrah.
			 (vertical-motion (1- jump) window))
		     (goto-char (window-start window)))
		   (if overlay
		       (move-overlay overlay start (point)))
		   ;; Now that we have scrolled WINDOW properly,
		   ;; put point back where it was for the redisplay
		   ;; so that we don't mess up the selected window.
		   (or (eq window (selected-window))
		       (goto-char opoint))
187
		   (sit-for mouse-scroll-delay)))))
188 189
    (or (eq window (selected-window))
	(goto-char opoint))))
190

191 192 193
(defvar mouse-drag-overlay (make-overlay 1 1))
(overlay-put mouse-drag-overlay 'face 'region)

194
(defvar mouse-selection-click-count 0)
195

196
(defun mouse-drag-region (start-event)
197
  "Set the region to the text that the mouse is dragged over.
198 199 200 201
Highlight the drag area as you move the mouse.
This must be bound to a button-down mouse event.
In Transient Mark mode, the highlighting remains once you
release the mouse button.  Otherwise, it does not."
202
  (interactive "e")
203
  (mouse-minibuffer-check start-event)
204 205 206
  (let* ((start-posn (event-start start-event))
	 (start-point (posn-point start-posn))
	 (start-window (posn-window start-posn))
207
	 (start-frame (window-frame start-window))
208 209 210 211 212
	 (bounds (window-edges start-window))
	 (top (nth 1 bounds))
	 (bottom (if (window-minibuffer-p start-window)
		     (nth 3 bounds)
		   ;; Don't count the mode line.
213 214
		   (1- (nth 3 bounds))))
	 (click-count (1- (event-click-count start-event))))
215
    (setq mouse-selection-click-count click-count)
216
    (mouse-set-point start-event)
217 218 219
    (let ((range (mouse-start-end start-point start-point click-count)))
      (move-overlay mouse-drag-overlay (car range) (nth 1 range)
		    (window-buffer start-window)))
220
    (deactivate-mark)
221
    (let (event end end-point)
222
      (track-mouse
223
	(while (progn
224 225 226 227 228 229 230 231 232 233 234 235 236
		 (setq event (read-event))
		 (or (mouse-movement-p event)
		     (eq (car-safe event) 'switch-frame)))
	  (if (eq (car-safe event) 'switch-frame)
	      nil
	    (setq end (event-end event)
		  end-point (posn-point end))

	    (cond
	     ;; Are we moving within the original window?
	     ((and (eq (posn-window end) start-window)
		   (integer-or-marker-p end-point))
	      (goto-char end-point)
237 238
	      (let ((range (mouse-start-end start-point (point) click-count)))
		(move-overlay mouse-drag-overlay (car range) (nth 1 range))))
239

240 241
	     (t
	      (let ((mouse-row (cdr (cdr (mouse-position)))))
242
		(cond
243
		 ((null mouse-row))
244
		 ((< mouse-row top)
245 246
		  (mouse-scroll-subr start-window (- mouse-row top)
				     mouse-drag-overlay start-point))
247
		 ((>= mouse-row bottom)
248
		  (mouse-scroll-subr start-window (1+ (- mouse-row bottom))
249
				     mouse-drag-overlay start-point)))))))))
250 251 252 253 254 255
      (if (consp event)
;;; When we scroll into the mode line or menu bar, or out of the window,
;;; we get events that don't fit these criteria.
;;;	       (eq (get (event-basic-type event) 'event-kind) 'mouse-click)
;;;	       (eq (posn-window (event-end event)) start-window)
;;;	       (numberp (posn-point (event-end event)))
256
	  (let ((fun (key-binding (vector (car event)))))
257 258
	    (if (not (= (overlay-start mouse-drag-overlay)
			(overlay-end mouse-drag-overlay)))
259
		(let (last-command this-command)
260
		  (push-mark (overlay-start mouse-drag-overlay) t t)
261
		  (goto-char (overlay-end mouse-drag-overlay))
262 263 264
		  (copy-region-as-kill (point) (mark t)))
	      (goto-char (overlay-end mouse-drag-overlay))
	      (setq this-command 'mouse-set-point))))
265
      (delete-overlay mouse-drag-overlay))))
266 267

;; Commands to handle xterm-style multiple clicks.
268

269 270 271 272 273 274 275 276 277 278
(defun mouse-skip-word (dir)
  "Skip over word, over whitespace, or over identical punctuation.
If DIR is positive skip forward; if negative, skip backward."
  (let* ((char (following-char))
	 (syntax (char-to-string (char-syntax char))))
    (if (or (string= syntax "w") (string= syntax " "))
	(if (< dir 0)
	    (skip-syntax-backward syntax)
	  (skip-syntax-forward syntax))
      (if (< dir 0)
279
	  (while (and (not (bobp)) (= (preceding-char) char))
280
	    (forward-char -1))
281
	(while (and (not (eobp)) (= (following-char) char))
282 283 284 285 286 287 288
	  (forward-char 1))))))

;; Return a list of region bounds based on START and END according to MODE.
;; If MODE is 0 then set point to (min START END), mark to (max START END).
;; If MODE is 1 then set point to start of word at (min START END),
;; mark to end of word at (max START END).
;; If MODE is 2 then do the same for lines.
289
(defun mouse-start-end (start end mode)
290 291 292 293
  (if (> start end)
      (let ((temp start))
        (setq start end
              end temp)))
294
  (setq mode (mod mode 3))
295 296 297 298
  (cond ((= mode 0)
	 (list start end))
        ((and (= mode 1)
              (= start end)
299
	      (char-after start)
300
              (= (char-syntax (char-after start)) ?\())
301 302 303 304 305
	 (list start
	       (save-excursion
		 (goto-char start)
		 (forward-sexp 1)
		 (point))))
306 307
        ((and (= mode 1)
              (= start end)
308
	      (char-after start)
309 310 311
              (= (char-syntax (char-after start)) ?\)))
	 (list (save-excursion 
		 (goto-char (1+ start))
312 313
		 (backward-sexp 1)
		 (point))
314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332
	       (1+ start)))
        ((= mode 1)
	 (list (save-excursion
		 (goto-char start)
		 (mouse-skip-word -1)
		 (point))
	       (save-excursion
		 (goto-char end)
		 (mouse-skip-word 1)
		 (point))))
        ((= mode 2)
	 (list (save-excursion
		 (goto-char start)
		 (beginning-of-line 1)
		 (point))
	       (save-excursion
		 (goto-char end)
		 (forward-line 1)
		 (point))))))
333

334 335 336
;; Subroutine: set the mark where CLICK happened,
;; but don't do anything else.
(defun mouse-set-mark-fast (click)
337
  (mouse-minibuffer-check click)
338 339 340 341 342 343 344 345 346 347 348 349
  (let ((posn (event-start click)))
    (select-window (posn-window posn))
    (if (numberp (posn-point posn))
	(push-mark (posn-point posn) t t))))

;; Momentarily show where the mark is, if highlighting doesn't show it. 
(defun mouse-show-mark ()
  (or transient-mark-mode
      (save-excursion
	(goto-char (mark t))
	(sit-for 1))))

Jim Blandy's avatar
Jim Blandy committed
350 351 352 353
(defun mouse-set-mark (click)
  "Set mark at the position clicked on with the mouse.
Display cursor at that position for a second.
This must be bound to a mouse click."
Jim Blandy's avatar
Jim Blandy committed
354
  (interactive "e")
Richard M. Stallman's avatar
Richard M. Stallman committed
355 356
  (let ((point-save (point)))
    (unwind-protect
Jim Blandy's avatar
Jim Blandy committed
357
	(progn (mouse-set-point click)
358 359 360
	       (push-mark nil t t)
	       (or transient-mark-mode
		   (sit-for 1)))
Richard M. Stallman's avatar
Richard M. Stallman committed
361 362
      (goto-char point-save))))

Jim Blandy's avatar
Jim Blandy committed
363 364 365
(defun mouse-kill (click)
  "Kill the region between point and the mouse click.
The text is saved in the kill ring, as with \\[kill-region]."
Jim Blandy's avatar
Jim Blandy committed
366
  (interactive "e")
367
  (mouse-minibuffer-check click)
368 369 370
  (let* ((posn (event-start click))
	 (click-posn (posn-point posn)))
    (select-window (posn-window posn))
Jim Blandy's avatar
Jim Blandy committed
371 372 373
    (if (numberp click-posn)
	(kill-region (min (point) click-posn)
		     (max (point) click-posn)))))
Richard M. Stallman's avatar
Richard M. Stallman committed
374

Jim Blandy's avatar
Jim Blandy committed
375 376
(defun mouse-yank-at-click (click arg)
  "Insert the last stretch of killed text at the position clicked on.
377 378 379 380
Also move point to one end of the text thus inserted (normally the end).
Prefix arguments are interpreted as with \\[yank].
If `mouse-yank-at-point' is non-nil, insert at point
regardless of where you click."
Jim Blandy's avatar
Jim Blandy committed
381
  (interactive "e\nP")
382
  (or mouse-yank-at-point (mouse-set-point click))
383
  (setq this-command 'yank)
Jim Blandy's avatar
Jim Blandy committed
384 385 386
  (yank arg))

(defun mouse-kill-ring-save (click)
Jim Blandy's avatar
Jim Blandy committed
387 388
  "Copy the region between point and the mouse click in the kill ring.
This does not delete the region; it acts like \\[kill-ring-save]."
Jim Blandy's avatar
Jim Blandy committed
389
  (interactive "e")
390
  (mouse-set-mark-fast click)
391 392
  (let (this-command last-command)
    (kill-ring-save (point) (mark t)))
393
  (mouse-show-mark))
Richard M. Stallman's avatar
Richard M. Stallman committed
394

Jim Blandy's avatar
Jim Blandy committed
395 396 397 398 399 400 401 402
;;; This function used to delete the text between point and the mouse
;;; whenever it was equal to the front of the kill ring, but some
;;; people found that confusing.

;;; A list (TEXT START END), describing the text and position of the last
;;; invocation of mouse-save-then-kill.
(defvar mouse-save-then-kill-posn nil)

403
(defun mouse-save-then-kill-delete-region (beg end)
404 405 406
  ;; We must make our own undo boundaries
  ;; because they happen automatically only for the current buffer.
  (undo-boundary)
407 408 409 410 411 412 413
  (if (or (= beg end) (eq buffer-undo-list t))
      ;; If we have no undo list in this buffer,
      ;; just delete.
      (delete-region beg end)
    ;; Delete, but make the undo-list entry share with the kill ring.
    ;; First, delete just one char, so in case buffer is being modified
    ;; for the first time, the undo list records that fact.
414 415 416 417
    (let (before-change-function after-change-function
	  before-change-functions after-change-functions)
      (delete-region beg
		     (+ beg (if (> end beg) 1 -1))))
418 419
    (let ((buffer-undo-list buffer-undo-list))
      ;; Undo that deletion--but don't change the undo list!
420 421 422
      (let (before-change-function after-change-function
	    before-change-functions after-change-functions)
	(primitive-undo 1 buffer-undo-list))
423 424 425
      ;; Now delete the rest of the specified region,
      ;; but don't record it.
      (setq buffer-undo-list t)
426 427
      (if (/= (length (car kill-ring)) (- (max end beg) (min end beg)))
	  (error "Lossage in mouse-save-then-kill-delete-region"))
428 429 430 431 432 433 434 435
      (delete-region beg end))
    (let ((tail buffer-undo-list))
      ;; Search back in buffer-undo-list for the string
      ;; that came from deleting one character.
      (while (and tail (not (stringp (car (car tail)))))
	(setq tail (cdr tail)))
      ;; Replace it with an entry for the entire deleted text.
      (and tail
436 437
	   (setcar tail (cons (car kill-ring) (min beg end))))))
  (undo-boundary))
438

439
(defun mouse-save-then-kill (click)
440 441 442 443
  "Save text to point in kill ring; the second time, kill the text.
If the text between point and the mouse is the same as what's
at the front of the kill ring, this deletes the text.
Otherwise, it adds the text to the kill ring, like \\[kill-ring-save],
444 445 446 447 448 449
which prepares for a second click to delete the text.

If you have selected words or lines, this command extends the
selection through the word or line clicked on.  If you do this
again in a different position, it extends the selection again.
If you do this twice in the same position, the selection is killed." 
450
  (interactive "e")
451
  (mouse-minibuffer-check click)
452 453 454 455
  (let ((click-posn (posn-point (event-start click)))
	;; Don't let a subsequent kill command append to this one:
	;; prevent setting this-command to kill-region.
	(this-command this-command))
456
    (if (> (mod mouse-selection-click-count 3) 0)
457 458 459
	(if (not (and (eq last-command 'mouse-save-then-kill)
		      (equal click-posn
			     (car (cdr-safe (cdr-safe mouse-save-then-kill-posn))))))
460 461 462 463 464 465 466 467 468 469
	    ;; Find both ends of the object selected by this click.
	    (let* ((range
		    (mouse-start-end click-posn click-posn
				     mouse-selection-click-count)))
	      ;; Move whichever end is closer to the click.
	      ;; That's what xterm does, and it seems reasonable.
	      (if (< (abs (- click-posn (mark t)))
		     (abs (- click-posn (point))))
		  (set-mark (car range))
		(goto-char (nth 1 range)))
470 471 472 473
	      ;; We have already put the old region in the kill ring.
	      ;; Replace it with the extended region.
	      ;; (It would be annoying to make a separate entry.)
	      (setcar kill-ring (buffer-substring (point) (mark t)))
474 475 476 477 478
	      (if interprogram-cut-function
		  (funcall interprogram-cut-function (car kill-ring)))
	      ;; Arrange for a repeated mouse-3 to kill this region.
	      (setq mouse-save-then-kill-posn
		    (list (car kill-ring) (point) click-posn))
479 480 481
	      (mouse-show-mark))
	  ;; If we click this button again without moving it,
	  ;; that time kill.
482 483 484
	  (mouse-save-then-kill-delete-region (point) (mark))
	  (setq mouse-selection-click-count 0)
	  (setq mouse-save-then-kill-posn nil))
485 486 487 488 489 490
      (if (and (eq last-command 'mouse-save-then-kill)
	       mouse-save-then-kill-posn
	       (eq (car mouse-save-then-kill-posn) (car kill-ring))
	       (equal (cdr mouse-save-then-kill-posn) (list (point) click-posn)))
	  ;; If this is the second time we've called
	  ;; mouse-save-then-kill, delete the text from the buffer.
491 492 493 494 495 496
	  (progn
	    (mouse-save-then-kill-delete-region (point) (mark))
	    ;; After we kill, another click counts as "the first time".
	    (setq mouse-save-then-kill-posn nil))
	(if (or (and (eq last-command 'mouse-save-then-kill)
		     mouse-save-then-kill-posn)
497
		(and mark-active transient-mark-mode)
498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519
		(and (eq last-command 'mouse-drag-region)
		     (or mark-even-if-inactive
			 (not transient-mark-mode))))
	    ;; We have a selection or suitable region, so adjust it.
	    (let* ((posn (event-start click))
		   (new (posn-point posn)))
	      (select-window (posn-window posn))
	      (if (numberp new)
		  (progn
		    ;; Move whichever end of the region is closer to the click.
		    ;; That is what xterm does, and it seems reasonable.
		    (if (< (abs (- new (point))) (abs (- new (mark t))))
			(goto-char new)
		      (set-mark new))
		    (setq deactivate-mark nil)))
	      (setcar kill-ring (buffer-substring (point) (mark t)))
	      (if interprogram-cut-function
		  (funcall interprogram-cut-function (car kill-ring))))
	  ;; We just have point, so set mark here.
	  (mouse-set-mark-fast click)
	  (kill-ring-save (point) (mark t))
	  (mouse-show-mark))
520 521
	(setq mouse-save-then-kill-posn
	      (list (car kill-ring) (point) click-posn))))))
522 523 524 525 526

(global-set-key [M-mouse-1] 'mouse-start-secondary)
(global-set-key [M-drag-mouse-1] 'mouse-set-secondary)
(global-set-key [M-down-mouse-1] 'mouse-drag-secondary)
(global-set-key [M-mouse-3] 'mouse-secondary-save-then-kill)
527
(global-set-key [M-mouse-2] 'mouse-yank-secondary)
528 529 530 531 532 533 534 535 536 537 538 539 540 541 542

;; An overlay which records the current secondary selection
;; or else is deleted when there is no secondary selection.
;; May be nil.
(defvar mouse-secondary-overlay nil)

;; A marker which records the specified first end for a secondary selection.
;; May be nil.
(defvar mouse-secondary-start nil)

(defun mouse-start-secondary (click)
  "Set one end of the secondary selection to the position clicked on.
Use \\[mouse-secondary-save-then-kill] to set the other end
and complete the secondary selection."
  (interactive "e")
543
  (mouse-minibuffer-check click)
544
  (let ((posn (event-start click)))
545 546 547 548 549 550 551 552 553 554
    (save-excursion
      (set-buffer (window-buffer (posn-window posn)))
      ;; Cancel any preexisting secondary selection.
      (if mouse-secondary-overlay
	  (delete-overlay mouse-secondary-overlay))
      (if (numberp (posn-point posn))
	  (progn
	    (or mouse-secondary-start
		(setq mouse-secondary-start (make-marker)))
	    (move-marker mouse-secondary-start (posn-point posn)))))))
555 556 557 558 559

(defun mouse-set-secondary (click)
  "Set the secondary selection to the text that the mouse is dragged over.
This must be bound to a mouse drag event."
  (interactive "e")
560
  (mouse-minibuffer-check click)
561 562 563
  (let ((posn (event-start click))
	beg
	(end (event-end click)))
564 565 566 567 568 569 570 571
    (save-excursion
      (set-buffer (window-buffer (posn-window posn)))
      (if (numberp (posn-point posn))
	  (setq beg (posn-point posn)))
      (if mouse-secondary-overlay
	  (move-overlay mouse-secondary-overlay beg (posn-point end))
	(setq mouse-secondary-overlay (make-overlay beg (posn-point end))))
      (overlay-put mouse-secondary-overlay 'face 'secondary-selection))))
572

573
(defun mouse-drag-secondary (start-event)
574
  "Set the secondary selection to the text that the mouse is dragged over.
575
Highlight the drag area as you move the mouse.
576 577
This must be bound to a button-down mouse event."
  (interactive "e")
578
  (mouse-minibuffer-check start-event)
579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595
  (let* ((start-posn (event-start start-event))
	 (start-point (posn-point start-posn))
	 (start-window (posn-window start-posn))
	 (start-frame (window-frame start-window))
	 (bounds (window-edges start-window))
	 (top (nth 1 bounds))
	 (bottom (if (window-minibuffer-p start-window)
		     (nth 3 bounds)
		   ;; Don't count the mode line.
		   (1- (nth 3 bounds))))
	 (click-count (1- (event-click-count start-event))))
    (save-excursion
      (set-buffer (window-buffer start-window))
      (setq mouse-selection-click-count click-count)
      (or mouse-secondary-overlay
	  (setq mouse-secondary-overlay
		(make-overlay (point) (point))))
596
      (overlay-put mouse-secondary-overlay 'face 'secondary-selection)
597
      (if (> (mod click-count 3) 0)
598 599
	  ;; Double or triple press: make an initial selection
	  ;; of one word or line.
600 601 602 603 604 605
	  (let ((range (mouse-start-end start-point start-point click-count)))
	    (set-marker mouse-secondary-start nil)
	    (move-overlay mouse-secondary-overlay 1 1
			  (window-buffer start-window))
	    (move-overlay mouse-secondary-overlay (car range) (nth 1 range)
			  (window-buffer start-window)))
606
	;; Single-press: cancel any preexisting secondary selection.
607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627
	(or mouse-secondary-start
	    (setq mouse-secondary-start (make-marker)))
	(set-marker mouse-secondary-start start-point)
	(delete-overlay mouse-secondary-overlay))
      (let (event end end-point)
	(track-mouse
	  (while (progn
		   (setq event (read-event))
		   (or (mouse-movement-p event)
		       (eq (car-safe event) 'switch-frame)))

	    (if (eq (car-safe event) 'switch-frame)
		nil
	      (setq end (event-end event)
		    end-point (posn-point end))
	      (cond
	       ;; Are we moving within the original window?
	       ((and (eq (posn-window end) start-window)
		     (integer-or-marker-p end-point))
		(let ((range (mouse-start-end start-point end-point
					      click-count)))
628 629 630 631 632 633
		  (if (or (/= start-point end-point)
			  (null (marker-position mouse-secondary-start)))
		      (progn
			(set-marker mouse-secondary-start nil)
			(move-overlay mouse-secondary-overlay
				      (car range) (nth 1 range))))))
634 635 636 637 638
               (t
                (let ((mouse-row (cdr (cdr (mouse-position)))))
                  (cond
                   ((null mouse-row))
                   ((< mouse-row top)
639 640
                    (mouse-scroll-subr start-window (- mouse-row top)
				       mouse-secondary-overlay start-point))
641
                   ((>= mouse-row bottom)
642
                    (mouse-scroll-subr start-window (1+ (- mouse-row bottom))
643
                                       mouse-secondary-overlay start-point)))))))))
644

645 646 647 648
	(if (consp event)
;;;		 (eq (get (event-basic-type event) 'event-kind) 'mouse-click)
;;;		 (eq (posn-window (event-end event)) start-window)
;;;		 (numberp (posn-point (event-end event)))
649 650 651
	    (if (marker-position mouse-secondary-start)
		(save-window-excursion
		  (delete-overlay mouse-secondary-overlay)
652
		  (x-set-selection 'SECONDARY nil)
653 654 655 656
		  (select-window start-window)
		  (save-excursion
		    (goto-char mouse-secondary-start)
		    (sit-for 1)))
657 658 659 660
	      (x-set-selection
	       'SECONDARY
	       (buffer-substring (overlay-start mouse-secondary-overlay)
				 (overlay-end mouse-secondary-overlay)))))))))
661

662
(defun mouse-yank-secondary (click)
663 664 665 666
  "Insert the secondary selection at the position clicked on.
Move point to the end of the inserted text.
If `mouse-yank-at-point' is non-nil, insert at point
regardless of where you click."
667
  (interactive "e")
668 669
  (or mouse-yank-at-point (mouse-set-point click))
  (insert (x-get-selection 'SECONDARY)))
670

671
(defun mouse-kill-secondary ()
672 673 674 675 676 677 678
  "Kill the text in the secondary selection.
This is intended more as a keyboard command than as a mouse command
but it can work as either one.

The current buffer (in case of keyboard use), or the buffer clicked on,
must be the one that the secondary selection is in.  This requirement
is to prevent accidents."
679 680 681 682 683 684 685 686
  (interactive)
  (let* ((keys (this-command-keys))
	 (click (elt keys (1- (length keys)))))
    (or (eq (overlay-buffer mouse-secondary-overlay)
	    (if (listp click)
		(window-buffer (posn-window (event-start click)))
	      (current-buffer)))
	(error "Select or click on the buffer where the secondary selection is")))
687 688 689 690
  (save-excursion
    (set-buffer (overlay-buffer mouse-secondary-overlay))
    (kill-region (overlay-start mouse-secondary-overlay)
		 (overlay-end mouse-secondary-overlay)))
691
  (delete-overlay mouse-secondary-overlay)
692
  (x-set-selection 'SECONDARY nil)
693 694 695
  (setq mouse-secondary-overlay nil))

(defun mouse-secondary-save-then-kill (click)
696
  "Save text to point in kill ring; the second time, kill the text.
697 698 699 700
You must use this in a buffer where you have recently done \\[mouse-start-secondary].
If the text between where you did \\[mouse-start-secondary] and where
you use this command matches the text at the front of the kill ring,
this command deletes the text.
701
Otherwise, it adds the text to the kill ring, like \\[kill-ring-save],
702
which prepares for a second click with this command to delete the text.
703

704 705 706 707
If you have already made a secondary selection in that buffer,
this command extends or retracts the selection to where you click.
If you do this again in a different position, it extends or retracts
again.  If you do this twice in the same position, it kills the selection."
708
  (interactive "e")
709
  (mouse-minibuffer-check click)
710 711
  (let ((posn (event-start click))
	(click-posn (posn-point (event-start click)))
712 713 714
	;; Don't let a subsequent kill command append to this one:
	;; prevent setting this-command to kill-region.
	(this-command this-command))
715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736
    (or (eq (window-buffer (posn-window posn))
	    (or (and mouse-secondary-overlay
		     (overlay-buffer mouse-secondary-overlay))
		(if mouse-secondary-start
		    (marker-buffer mouse-secondary-start))))
	(error "Wrong buffer"))
    (save-excursion
      (set-buffer (window-buffer (posn-window posn)))
      (if (> (mod mouse-selection-click-count 3) 0)
	  (if (not (and (eq last-command 'mouse-secondary-save-then-kill)
			(equal click-posn
			       (car (cdr-safe (cdr-safe mouse-save-then-kill-posn))))))
	      ;; Find both ends of the object selected by this click.
	      (let* ((range
		      (mouse-start-end click-posn click-posn
				       mouse-selection-click-count)))
		;; Move whichever end is closer to the click.
		;; That's what xterm does, and it seems reasonable.
		(if (< (abs (- click-posn (overlay-start mouse-secondary-overlay)))
		       (abs (- click-posn (overlay-end mouse-secondary-overlay))))
		    (move-overlay mouse-secondary-overlay (car range)
				  (overlay-end mouse-secondary-overlay))
737 738 739
		  (move-overlay mouse-secondary-overlay
				(overlay-start mouse-secondary-overlay)
				(nth 1 range)))
740 741 742 743 744 745 746 747 748 749 750 751 752
		;; We have already put the old region in the kill ring.
		;; Replace it with the extended region.
		;; (It would be annoying to make a separate entry.)
		(setcar kill-ring (buffer-substring
				   (overlay-start mouse-secondary-overlay)
				   (overlay-end mouse-secondary-overlay)))
		(if interprogram-cut-function
		    (funcall interprogram-cut-function (car kill-ring)))
		;; Arrange for a repeated mouse-3 to kill this region.
		(setq mouse-save-then-kill-posn
		      (list (car kill-ring) (point) click-posn)))
	    ;; If we click this button again without moving it,
	    ;; that time kill.
753
	    (progn
754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782
	      (mouse-save-then-kill-delete-region
	       (overlay-start mouse-secondary-overlay)
	       (overlay-end mouse-secondary-overlay))
	      (setq mouse-save-then-kill-posn nil)
	      (setq mouse-selection-click-count 0)
	      (delete-overlay mouse-secondary-overlay)))
	(if (and (eq last-command 'mouse-secondary-save-then-kill)
		 mouse-save-then-kill-posn
		 (eq (car mouse-save-then-kill-posn) (car kill-ring))
		 (equal (cdr mouse-save-then-kill-posn) (list (point) click-posn)))
	    ;; If this is the second time we've called
	    ;; mouse-secondary-save-then-kill, delete the text from the buffer.
	    (progn
	      (mouse-save-then-kill-delete-region
	       (overlay-start mouse-secondary-overlay)
	       (overlay-end mouse-secondary-overlay))
	      (setq mouse-save-then-kill-posn nil)
	      (delete-overlay mouse-secondary-overlay))
	  (if (overlay-start mouse-secondary-overlay)
	      ;; We have a selection, so adjust it.
	      (progn
		(if (numberp click-posn)
		    (progn
		      ;; Move whichever end of the region is closer to the click.
		      ;; That is what xterm does, and it seems reasonable.
		      (if (< (abs (- click-posn (overlay-start mouse-secondary-overlay)))
			     (abs (- click-posn (overlay-end mouse-secondary-overlay))))
			  (move-overlay mouse-secondary-overlay click-posn
					(overlay-end mouse-secondary-overlay))
783 784 785
			(move-overlay mouse-secondary-overlay
				      (overlay-start mouse-secondary-overlay)
				      click-posn))
786
		      (setq deactivate-mark nil)))
787 788 789 790 791 792 793 794 795 796 797 798 799 800
		(if (eq last-command 'mouse-secondary-save-then-kill)
		    (progn
		      ;; If the front of the kill ring comes from 
		      ;; an immediately previous use of this command,
		      ;; replace it with the extended region.
		      ;; (It would be annoying to make a separate entry.)
		      (setcar kill-ring
			      (buffer-substring
			       (overlay-start mouse-secondary-overlay)
			       (overlay-end mouse-secondary-overlay)))
		      (if interprogram-cut-function
			  (funcall interprogram-cut-function (car kill-ring))))
		  (copy-region-as-kill (overlay-start mouse-secondary-overlay)
				       (overlay-end mouse-secondary-overlay))))
801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816
	    (if mouse-secondary-start
		;; All we have is one end of a selection,
		;; so put the other end here.
		(let ((start (+ 0 mouse-secondary-start)))
		  (kill-ring-save start click-posn)
		  (if mouse-secondary-overlay
		      (move-overlay mouse-secondary-overlay start click-posn)
		    (setq mouse-secondary-overlay (make-overlay start click-posn)))
		  (overlay-put mouse-secondary-overlay 'face 'secondary-selection))))
	  (setq mouse-save-then-kill-posn
		(list (car kill-ring) (point) click-posn))))
      (x-set-selection 'SECONDARY
		       (if (overlay-buffer mouse-secondary-overlay)
			   (buffer-substring
			    (overlay-start mouse-secondary-overlay)
			    (overlay-end mouse-secondary-overlay)))))))
817

818
(defun mouse-buffer-menu (event)
819 820 821
  "Pop up a menu of buffers for selection with the mouse.
This switches buffers in the window that you clicked on,
and selects that window."
Jim Blandy's avatar
Jim Blandy committed
822
  (interactive "e")
823
  (mouse-minibuffer-check event)
824 825 826 827
  (let ((menu
	 (list "Buffer Menu"
	       (cons "Select Buffer"
		     (let ((tail (buffer-list))
828
			   (maxbuf 0)
829
			   head)
830 831 832 833 834 835 836
		       (while tail
			 (or (eq ?\ (aref (buffer-name (car tail)) 0))
			     (setq maxbuf
				   (max maxbuf
					(length (buffer-name (car tail))))))
			 (setq tail (cdr tail)))
		       (setq tail (buffer-list))
837 838 839 840 841 842 843
		       (while tail
			 (let ((elt (car tail)))
			   (if (not (string-match "^ "
						  (buffer-name elt)))
			       (setq head (cons
					   (cons
					    (format
844 845
					     (format "%%%ds  %%s%%s  %%s"
						     maxbuf)
846
					     (buffer-name elt)
847 848 849 850 851
					     (if (buffer-modified-p elt)
						 "*" " ")
					     (save-excursion
					       (set-buffer elt)
					       (if buffer-read-only "%" " "))
852 853 854 855 856
					     (or (buffer-file-name elt) ""))
					    elt)
					   head))))
			 (setq tail (cdr tail)))
		       (reverse head))))))
857 858 859 860
    (let ((buf (x-popup-menu event menu))
	  (window (posn-window (event-start event))))
      (if buf
	  (progn
861
	    (or (framep window) (select-window window))
862
	    (switch-to-buffer buf))))))
Richard M. Stallman's avatar
Richard M. Stallman committed
863

864
;;; These need to be rewritten for the new scroll bar implementation.
Jim Blandy's avatar
Jim Blandy committed
865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970

;;;!! ;; Commands for the scroll bar.
;;;!! 
;;;!! (defun mouse-scroll-down (click)
;;;!!   (interactive "@e")
;;;!!   (scroll-down (1+ (cdr (mouse-coords click)))))
;;;!! 
;;;!! (defun mouse-scroll-up (click)
;;;!!   (interactive "@e")
;;;!!   (scroll-up (1+ (cdr (mouse-coords click)))))
;;;!! 
;;;!! (defun mouse-scroll-down-full ()
;;;!!   (interactive "@")
;;;!!   (scroll-down nil))
;;;!! 
;;;!! (defun mouse-scroll-up-full ()
;;;!!   (interactive "@")
;;;!!   (scroll-up nil))
;;;!! 
;;;!! (defun mouse-scroll-move-cursor (click)
;;;!!   (interactive "@e")
;;;!!   (move-to-window-line (1+ (cdr (mouse-coords click)))))
;;;!! 
;;;!! (defun mouse-scroll-absolute (event)
;;;!!   (interactive "@e")
;;;!!   (let* ((pos (car event))
;;;!! 	 (position (car pos))
;;;!! 	 (length (car (cdr pos))))
;;;!!     (if (<= length 0) (setq length 1))
;;;!!     (let* ((scale-factor (max 1 (/ length (/ 8000000 (buffer-size)))))
;;;!! 	   (newpos (* (/ (* (/ (buffer-size) scale-factor)
;;;!! 			    position)
;;;!! 			 length)
;;;!! 		      scale-factor)))
;;;!!       (goto-char newpos)
;;;!!       (recenter '(4)))))
;;;!! 
;;;!! (defun mouse-scroll-left (click)
;;;!!   (interactive "@e")
;;;!!   (scroll-left (1+ (car (mouse-coords click)))))
;;;!! 
;;;!! (defun mouse-scroll-right (click)
;;;!!   (interactive "@e")
;;;!!   (scroll-right (1+ (car (mouse-coords click)))))
;;;!! 
;;;!! (defun mouse-scroll-left-full ()
;;;!!   (interactive "@")
;;;!!   (scroll-left nil))
;;;!! 
;;;!! (defun mouse-scroll-right-full ()
;;;!!   (interactive "@")
;;;!!   (scroll-right nil))
;;;!! 
;;;!! (defun mouse-scroll-move-cursor-horizontally (click)
;;;!!   (interactive "@e")
;;;!!   (move-to-column (1+ (car (mouse-coords click)))))
;;;!! 
;;;!! (defun mouse-scroll-absolute-horizontally (event)
;;;!!   (interactive "@e")
;;;!!   (let* ((pos (car event))
;;;!! 	 (position (car pos))
;;;!! 	 (length (car (cdr pos))))
;;;!!   (set-window-hscroll (selected-window) 33)))
;;;!! 
;;;!! (global-set-key [scroll-bar mouse-1] 'mouse-scroll-up)
;;;!! (global-set-key [scroll-bar mouse-2] 'mouse-scroll-absolute)
;;;!! (global-set-key [scroll-bar mouse-3] 'mouse-scroll-down)
;;;!! 
;;;!! (global-set-key [vertical-slider mouse-1] 'mouse-scroll-move-cursor)
;;;!! (global-set-key [vertical-slider mouse-2] 'mouse-scroll-move-cursor)
;;;!! (global-set-key [vertical-slider mouse-3] 'mouse-scroll-move-cursor)
;;;!! 
;;;!! (global-set-key [thumbup mouse-1] 'mouse-scroll-up-full)
;;;!! (global-set-key [thumbup mouse-2] 'mouse-scroll-up-full)
;;;!! (global-set-key [thumbup mouse-3] 'mouse-scroll-up-full)
;;;!! 
;;;!! (global-set-key [thumbdown mouse-1] 'mouse-scroll-down-full)
;;;!! (global-set-key [thumbdown mouse-2] 'mouse-scroll-down-full)
;;;!! (global-set-key [thumbdown mouse-3] 'mouse-scroll-down-full)
;;;!! 
;;;!! (global-set-key [horizontal-scroll-bar mouse-1] 'mouse-scroll-left)
;;;!! (global-set-key [horizontal-scroll-bar mouse-2]
;;;!! 		'mouse-scroll-absolute-horizontally)
;;;!! (global-set-key [horizontal-scroll-bar mouse-3] 'mouse-scroll-right)
;;;!! 
;;;!! (global-set-key [horizontal-slider mouse-1]
;;;!! 		'mouse-scroll-move-cursor-horizontally)
;;;!! (global-set-key [horizontal-slider mouse-2]
;;;!! 		'mouse-scroll-move-cursor-horizontally)
;;;!! (global-set-key [horizontal-slider mouse-3]
;;;!! 		'mouse-scroll-move-cursor-horizontally)
;;;!! 
;;;!! (global-set-key [thumbleft mouse-1] 'mouse-scroll-left-full)
;;;!! (global-set-key [thumbleft mouse-2] 'mouse-scroll-left-full)
;;;!! (global-set-key [thumbleft mouse-3] 'mouse-scroll-left-full)
;;;!! 
;;;!! (global-set-key [thumbright mouse-1] 'mouse-scroll-right-full)
;;;!! (global-set-key [thumbright mouse-2] 'mouse-scroll-right-full)
;;;!! (global-set-key [thumbright mouse-3] 'mouse-scroll-right-full)
;;;!! 
;;;!! (global-set-key [horizontal-scroll-bar S-mouse-2]
;;;!! 		'mouse-split-window-horizontally)
;;;!! (global-set-key [mode-line S-mouse-2]
;;;!! 		'mouse-split-window-horizontally)
;;;!! (global-set-key [vertical-scroll-bar S-mouse-2]
;;;!! 		'mouse-split-window)
971

Jim Blandy's avatar
Jim Blandy committed
972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105
;;;!! ;;;;
;;;!! ;;;; Here are experimental things being tested.  Mouse events
;;;!! ;;;; are of the form:
;;;!! ;;;;	((x y) window screen-part key-sequence timestamp)
;;;!! ;;
;;;!! ;;;;
;;;!! ;;;; Dynamically track mouse coordinates
;;;!! ;;;;
;;;!! ;;
;;;!! ;;(defun track-mouse (event)
;;;!! ;;  "Track the coordinates, absolute and relative, of the mouse."
;;;!! ;;  (interactive "@e")
;;;!! ;;  (while mouse-grabbed
;;;!! ;;    (let* ((pos (read-mouse-position (selected-screen)))
;;;!! ;;	   (abs-x (car pos))
;;;!! ;;	   (abs-y (cdr pos))
;;;!! ;;	   (relative-coordinate (coordinates-in-window-p
;;;!! ;;				 (list (car pos) (cdr pos))
;;;!! ;;				 (selected-window))))
;;;!! ;;      (if (consp relative-coordinate)
;;;!! ;;	  (message "mouse: [%d %d], (%d %d)" abs-x abs-y
;;;!! ;;		   (car relative-coordinate)
;;;!! ;;		   (car (cdr relative-coordinate)))
;;;!! ;;	(message "mouse: [%d %d]" abs-x abs-y)))))
;;;!! 
;;;!! ;;
;;;!! ;; Dynamically put a box around the line indicated by point
;;;!! ;;
;;;!! ;;
;;;!! ;;(require 'backquote)
;;;!! ;;
;;;!! ;;(defun mouse-select-buffer-line (event)
;;;!! ;;  (interactive "@e")
;;;!! ;;  (let ((relative-coordinate
;;;!! ;;	 (coordinates-in-window-p (car event) (selected-window)))
;;;!! ;;	(abs-y (car (cdr (car event)))))
;;;!! ;;    (if (consp relative-coordinate)
;;;!! ;;	(progn
;;;!! ;;	  (save-excursion
;;;!! ;;	    (move-to-window-line (car (cdr relative-coordinate)))
;;;!! ;;	    (x-draw-rectangle
;;;!! ;;	     (selected-screen)
;;;!! ;;	     abs-y 0
;;;!! ;;	     (save-excursion
;;;!! ;;		 (move-to-window-line (car (cdr relative-coordinate)))
;;;!! ;;		 (end-of-line)
;;;!! ;;		 (push-mark nil t)
;;;!! ;;		 (beginning-of-line)
;;;!! ;;		 (- (region-end) (region-beginning))) 1))
;;;!! ;;	  (sit-for 1)
;;;!! ;;	  (x-erase-rectangle (selected-screen))))))
;;;!! ;;
;;;!! ;;(defvar last-line-drawn nil)
;;;!! ;;(defvar begin-delim "[^ \t]")
;;;!! ;;(defvar end-delim   "[^ \t]")
;;;!! ;;
;;;!! ;;(defun mouse-boxing (event)
;;;!! ;;  (interactive "@e")
;;;!! ;;  (save-excursion
;;;!! ;;    (let ((screen (selected-screen)))
;;;!! ;;      (while (= (x-mouse-events) 0)
;;;!! ;;	(let* ((pos (read-mouse-position screen))
;;;!! ;;	       (abs-x (car pos))
;;;!! ;;	       (abs-y (cdr pos))
;;;!! ;;	       (relative-coordinate
;;;!! ;;		(coordinates-in-window-p (` ((, abs-x) (, abs-y)))
;;;!! ;;					 (selected-window)))
;;;!! ;;	       (begin-reg nil)
;;;!! ;;	       (end-reg nil)
;;;!! ;;	       (end-column nil)
;;;!! ;;	       (begin-column nil))
;;;!! ;;	  (if (and (consp relative-coordinate)
;;;!! ;;		   (or (not last-line-drawn)
;;;!! ;;		       (not (= last-line-drawn abs-y))))
;;;!! ;;	      (progn
;;;!! ;;		(move-to-window-line (car (cdr relative-coordinate)))
;;;!! ;;		(if (= (following-char) 10)
;;;!! ;;		    ()
;;;!! ;;		  (progn
;;;!! ;;		    (setq begin-reg (1- (re-search-forward end-delim)))
;;;!! ;;		    (setq begin-column (1- (current-column)))
;;;!! ;;		    (end-of-line)
;;;!! ;;		    (setq end-reg (1+ (re-search-backward begin-delim)))
;;;!! ;;		    (setq end-column (1+ (current-column)))
;;;!! ;;		    (message "%s" (buffer-substring begin-reg end-reg))
;;;!! ;;		    (x-draw-rectangle screen
;;;!! ;;				      (setq last-line-drawn abs-y)
;;;!! ;;				      begin-column
;;;!! ;;				      (- end-column begin-column) 1))))))))))
;;;!! ;;
;;;!! ;;(defun mouse-erase-box ()
;;;!! ;;  (interactive)
;;;!! ;;  (if last-line-drawn
;;;!! ;;      (progn
;;;!! ;;	(x-erase-rectangle (selected-screen))
;;;!! ;;	(setq last-line-drawn nil))))
;;;!! 
;;;!! ;;; (defun test-x-rectangle ()
;;;!! ;;;   (use-local-mouse-map (setq rectangle-test-map (make-sparse-keymap)))
;;;!! ;;;   (define-key rectangle-test-map mouse-motion-button-left 'mouse-boxing)
;;;!! ;;;   (define-key rectangle-test-map mouse-button-left-up 'mouse-erase-box))
;;;!! 
;;;!! ;;
;;;!! ;; Here is how to do double clicking in lisp.  About to change.
;;;!! ;;
;;;!! 
;;;!! (defvar double-start nil)
;;;!! (defconst double-click-interval 300
;;;!!   "Max ticks between clicks")
;;;!! 
;;;!! (defun double-down (event)
;;;!!   (interactive "@e")
;;;!!   (if double-start
;;;!!       (let ((interval (- (nth 4 event) double-start)))
;;;!! 	(if (< interval double-click-interval)
;;;!! 	    (progn
;;;!! 	      (backward-up-list 1)
;;;!! 	      ;;      (message "Interval %d" interval)
;;;!! 	      (sleep-for 1)))
;;;!! 	(setq double-start nil))
;;;!!     (setq double-start (nth 4 event))))
;;;!!     
;;;!! (defun double-up (event)
;;;!!   (interactive "@e")
;;;!!   (and double-start
;;;!!        (> (- (nth 4 event ) double-start) double-click-interval)
;;;!!        (setq double-start nil)))
;;;!! 
;;;!! ;;; (defun x-test-doubleclick ()
;;;!! ;;;   (use-local-mouse-map (setq doubleclick-test-map (make-sparse-keymap)))
;;;!! ;;;   (define-key doubleclick-test-map mouse-button-left 'double-down)
;;;!! ;;;   (define-key doubleclick-test-map mouse-button-left-up 'double-up))
;;;!! 
;;;!! ;;
1106
;;;!! ;; This scrolls while button is depressed.  Use preferable in scroll bar.
Jim Blandy's avatar
Jim Blandy committed
1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188
;;;!! ;;
;;;!! 
;;;!! (defvar scrolled-lines 0)
;;;!! (defconst scroll-speed 1)
;;;!! 
;;;!! (defun incr-scroll-down (event)
;;;!!   (interactive "@e")
;;;!!   (setq scrolled-lines 0)
;;;!!   (incremental-scroll scroll-speed))
;;;!! 
;;;!! (defun incr-scroll-up (event)
;;;!!   (interactive "@e")
;;;!!   (setq scrolled-lines 0)
;;;!!   (incremental-scroll (- scroll-speed)))
;;;!! 
;;;!! (defun incremental-scroll (n)
;;;!!   (while (= (x-mouse-events) 0)
;;;!!     (setq scrolled-lines (1+ (* scroll-speed scrolled-lines)))
;;;!!     (scroll-down n)
;;;!!     (sit-for 300 t)))
;;;!! 
;;;!! (defun incr-scroll-stop (event)
;;;!!   (interactive "@e")
;;;!!   (message "Scrolled %d lines" scrolled-lines)
;;;!!   (setq scrolled-lines 0)
;;;!!   (sleep-for 1))
;;;!! 
;;;!! ;;; (defun x-testing-scroll ()
;;;!! ;;;   (let ((scrolling-map (function mouse-vertical-scroll-bar-prefix)))
;;;!! ;;;     (define-key scrolling-map mouse-button-left 'incr-scroll-down)
;;;!! ;;;     (define-key scrolling-map mouse-button-right 'incr-scroll-up)
;;;!! ;;;     (define-key scrolling-map mouse-button-left-up 'incr-scroll-stop)
;;;!! ;;;     (define-key scrolling-map mouse-button-right-up 'incr-scroll-stop)))
;;;!! 
;;;!! ;;
;;;!! ;; Some playthings suitable for picture mode?  They need work.
;;;!! ;;
;;;!! 
;;;!! (defun mouse-kill-rectangle (event)
;;;!!   "Kill the rectangle between point and the mouse cursor."
;;;!!   (interactive "@e")
;;;!!   (let ((point-save (point)))
;;;!!     (save-excursion
;;;!!       (mouse-set-point event)
;;;!!       (push-mark nil t)
;;;!!       (if (> point-save (point))
;;;!! 	  (kill-rectangle (point) point-save)
;;;!! 	(kill-rectangle point-save (point))))))
;;;!! 
;;;!! (defun mouse-open-rectangle (event)
;;;!!   "Kill the rectangle between point and the mouse cursor."
;;;!!   (interactive "@e")
;;;!!   (let ((point-save (point)))
;;;!!     (save-excursion
;;;!!       (mouse-set-point event)
;;;!!       (push-mark nil t)
;;;!!       (if (> point-save (point))
;;;!! 	  (open-rectangle (point) point-save)
;;;!! 	(open-rectangle point-save (point))))))
;;;!! 
;;;!! ;; Must be a better way to do this.
;;;!! 
;;;!! (defun mouse-multiple-insert (n char)
;;;!!   (while (> n 0)
;;;!!     (insert char)
;;;!!     (setq n (1- n))))
;;;!! 
;;;!! ;; What this could do is not finalize until button was released.
;;;!! 
;;;!! (defun mouse-move-text (event)
;;;!!   "Move text from point to cursor position, inserting spaces."
;;;!!   (interactive "@e")
;;;!!   (let* ((relative-coordinate
;;;!! 	  (coordinates-in-window-p (car event) (selected-window))))
;;;!!     (if (consp relative-coordinate)
;;;!! 	(cond ((> (current-column) (car relative-coordinate))
;;;!! 	       (delete-char
;;;!! 		(- (car relative-coordinate) (current-column))))
;;;!! 	      ((< (current-column) (car relative-coordinate))
;;;!! 	       (mouse-multiple-insert
;;;!! 		(- (car relative-coordinate) (current-column)) " "))
;;;!! 	      ((= (current-column) (car relative-coordinate)) (ding))))))
1189

1190 1191 1192
;; Choose a completion with the mouse.

(defun mouse-choose-completion (event)
1193
  "Click on an alternative in the `*Completions*' buffer to choose it."