mouse.el 49.3 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

3
;;; Copyright (C) 1993 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

Jim Blandy's avatar
Jim Blandy committed
39 40

(defun mouse-delete-window (click)
41
  "Delete the window you click on.
Jim Blandy's avatar
Jim Blandy committed
42
This must be bound to a mouse click."
Jim Blandy's avatar
Jim Blandy committed
43
  (interactive "e")
44
  (delete-window (posn-window (event-start click))))
Jim Blandy's avatar
Jim Blandy committed
45

46 47 48 49 50 51 52 53 54 55
(defun mouse-tear-off-window (click)
  "Delete the window clicked on, and create a new frame displaying its buffer."
  (interactive "e")
  (let* ((window (posn-window (event-start click)))
	 (buf (window-buffer window))
	 (frame (new-frame)))
    (select-frame frame)
    (switch-to-buffer buf)
    (delete-window window)))

56
(defun mouse-delete-other-windows ()
57
  "Delete all window except the one you click on."
58
  (interactive "@")
Jim Blandy's avatar
Jim Blandy committed
59
  (delete-other-windows))
Richard M. Stallman's avatar
Richard M. Stallman committed
60

Jim Blandy's avatar
Jim Blandy committed
61 62 63 64
(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."
65
  (interactive "@e")
66 67
  (let ((start (event-start click)))
    (select-window (posn-window start))
68 69 70 71
    (let ((new-height (if (eq (posn-point start) 'vertical-scroll-bar)
			  (scroll-bar-scale (posn-col-row start)
					    (1- (window-height)))
			(1+ (cdr (posn-col-row (event-end click))))))
72 73 74 75 76 77
	  (first-line window-min-height)
	  (last-line (- (window-height) window-min-height)))
      (if (< last-line first-line)
	  (error "window too short to split")
	(split-window-vertically
	 (min (max new-height first-line) last-line))))))
Jim Blandy's avatar
Jim Blandy committed
78

79 80 81 82 83
(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")
84 85 86 87 88 89 90 91 92
  (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)
	  (error "window too narrow to split")
	(split-window-horizontally
	 (min (max new-width first-col) last-col))))))
93

94
(defun mouse-set-point (event)
Jim Blandy's avatar
Jim Blandy committed
95
  "Move point to the position clicked on with the mouse.
96
This should be bound to a mouse click event type."
Jim Blandy's avatar
Jim Blandy committed
97
  (interactive "e")
98 99 100
  ;; 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)))
101 102 103
    (and (window-minibuffer-p (posn-window posn))
	 (not (minibuffer-window-active-p (posn-window posn)))
	 (error "Minibuffer window is not active"))
104 105 106
    (select-window (posn-window posn))
    (if (numberp (posn-point posn))
	(goto-char (posn-point posn)))))
Jim Blandy's avatar
Jim Blandy committed
107

108
(defun mouse-set-region (click)
109
  "Set the region to the text dragged over, and copy to kill ring.
110
This should be bound to a mouse drag event."
111 112 113 114 115 116
  (interactive "e")
  (let ((posn (event-start click))
	(end (event-end click)))
    (select-window (posn-window posn))
    (if (numberp (posn-point posn))
	(goto-char (posn-point posn)))
117 118 119 120
    ;; If mark is highlighted, no need to bounce the cursor.
    (or (and transient-mark-mode
	     (eq (framep (selected-frame)) 'x))
	(sit-for 1))
121
    (push-mark)
122
    (set-mark (point))
123
    (if (numberp (posn-point end))
124 125 126 127 128
	(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)))))
129

130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160
(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.")

(defun mouse-scroll-subr (jump &optional overlay start)
  "Scroll the selected window JUMP lines at a time, until new input arrives.
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."
  (while (progn
	   (goto-char (window-start))
	   (if (not (zerop (vertical-motion jump)))
	       (progn
		 (set-window-start (selected-window) (point))
		 (if (natnump jump)
		     (progn
		       (goto-char (window-end (selected-window)))
		       ;; window-end doesn't reflect the window's new
		       ;; start position until the next redisplay.  Hurrah.
		       (vertical-motion (1- jump)))
		   (goto-char (window-start (selected-window))))
		 (if overlay
		     (move-overlay overlay start (point)))
		 (if (not (eobp))
		     (sit-for mouse-scroll-delay))))))
  (point))
161

162 163 164
(defvar mouse-drag-overlay (make-overlay 1 1))
(overlay-put mouse-drag-overlay 'face 'region)

165 166
(defvar mouse-selection-click-count nil)

167
(defun mouse-drag-region (start-event)
168
  "Set the region to the text that the mouse is dragged over.
169 170 171 172
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."
173
  (interactive "e")
174 175 176
  (let* ((start-posn (event-start start-event))
	 (start-point (posn-point start-posn))
	 (start-window (posn-window start-posn))
177
	 (start-frame (window-frame start-window))
178 179 180 181 182
	 (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.
183 184
		   (1- (nth 3 bounds))))
	 (click-count (1- (event-click-count start-event))))
185
    (setq mouse-selection-click-count click-count)
186
    (mouse-set-point start-event)
187 188 189
    (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)))
190
    (deactivate-mark)
191
    (let (event end end-point)
192
      (track-mouse
193
	(while (progn
194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210
		 (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

	     ;; Ignore switch-frame events.
	     ((eq (car-safe event) 'switch-frame))

	     ;; Are we moving within the original window?
	     ((and (eq (posn-window end) start-window)
		   (integer-or-marker-p end-point))
	      (goto-char end-point)
211 212
	      (let ((range (mouse-start-end start-point (point) click-count)))
		(move-overlay mouse-drag-overlay (car range) (nth 1 range))))
213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228

	     ;; Are we moving on a different window on the same frame?
	     ((and (windowp (posn-window end))
		   (eq (window-frame (posn-window end)) start-frame))
	      (let ((mouse-row
		     (+ (nth 1 (window-edges (posn-window end)))
			(cdr (posn-col-row end)))))
		(cond
		 ((< mouse-row top)
		  (mouse-scroll-subr
		   (- mouse-row top) mouse-drag-overlay start-point))
		 ((and (not (eobp))
		       (>= mouse-row bottom))
		  (mouse-scroll-subr (1+ (- mouse-row bottom))
				     mouse-drag-overlay start-point)))))

229 230 231 232 233 234 235 236 237 238
	     (t
	      (let ((mouse-y (cdr (cdr (mouse-position))))
		    (menu-bar-lines (or (cdr (assq 'menu-bar-lines
						   (frame-parameters)))
					0)))

		;; Are we on the menu bar?
		(and (integerp mouse-y) (< mouse-y menu-bar-lines)
		     (mouse-scroll-subr (- mouse-y menu-bar-lines)
					mouse-drag-overlay start-point))))))))
239

240 241 242
      (if (and (eq (get (event-basic-type event) 'event-kind) 'mouse-click)
	       (eq (posn-window (event-end event)) start-window)
	       (numberp (posn-point (event-end event))))
243 244
	  (let ((fun (key-binding (vector (car event)))))
	    (if (memq fun '(mouse-set-region mouse-set-point))
245 246 247 248 249 250
		(if (not (= (overlay-start mouse-drag-overlay)
			    (overlay-end mouse-drag-overlay)))
		    (let (this-command)
		      (push-mark (overlay-start mouse-drag-overlay) t t)
		      (goto-char (overlay-end mouse-drag-overlay))
		      (copy-region-as-kill (point) (mark t)))
251 252
		  (goto-char (overlay-end mouse-drag-overlay))
		  (setq this-command 'mouse-set-point))
253 254
	      (if (fboundp fun)
		  (funcall fun event)))))
255
      (delete-overlay mouse-drag-overlay))))
256 257

;; Commands to handle xterm-style multiple clicks.
258

259 260 261 262 263 264 265 266 267 268
(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)
269
	  (while (and (not (bobp)) (= (preceding-char) char))
270
	    (forward-char -1))
271
	(while (and (not (eobp)) (= (following-char) char))
272 273 274 275 276 277 278
	  (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.
279
(defun mouse-start-end (start end mode)
280 281 282 283 284 285 286 287
  (if (> start end)
      (let ((temp start))
        (setq start end
              end temp)))
  (cond ((= mode 0)
	 (list start end))
        ((and (= mode 1)
              (= start end)
288
	      (not (eobp))
289 290 291 292
              (= (char-syntax (char-after start)) ?\())
	 (list start (save-excursion (forward-sexp 1) (point))))
        ((and (= mode 1)
              (= start end)
293
	      (not (eobp))
294 295 296
              (= (char-syntax (char-after start)) ?\)))
	 (list (save-excursion 
		 (goto-char (1+ start))
297 298
		 (backward-sexp 1)
		 (point))
299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317
	       (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))))))
318

319 320 321 322 323 324 325 326 327 328 329 330 331 332 333
;; Subroutine: set the mark where CLICK happened,
;; but don't do anything else.
(defun mouse-set-mark-fast (click)
  (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
334 335 336 337
(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
338
  (interactive "e")
Richard M. Stallman's avatar
Richard M. Stallman committed
339 340
  (let ((point-save (point)))
    (unwind-protect
Jim Blandy's avatar
Jim Blandy committed
341
	(progn (mouse-set-point click)
342 343 344
	       (push-mark nil t t)
	       (or transient-mark-mode
		   (sit-for 1)))
Richard M. Stallman's avatar
Richard M. Stallman committed
345 346
      (goto-char point-save))))

Jim Blandy's avatar
Jim Blandy committed
347 348 349
(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
350
  (interactive "e")
351
  (let ((click-posn (posn-point (event-start click))))
Jim Blandy's avatar
Jim Blandy committed
352 353 354
    (if (numberp click-posn)
	(kill-region (min (point) click-posn)
		     (max (point) click-posn)))))
Richard M. Stallman's avatar
Richard M. Stallman committed
355

Jim Blandy's avatar
Jim Blandy committed
356 357 358
(defun mouse-yank-at-click (click arg)
  "Insert the last stretch of killed text at the position clicked on.
Prefix arguments are interpreted as with \\[yank]."
Jim Blandy's avatar
Jim Blandy committed
359
  (interactive "e\nP")
Jim Blandy's avatar
Jim Blandy committed
360
  (mouse-set-point click)
361
  (setq this-command 'yank)
Jim Blandy's avatar
Jim Blandy committed
362 363 364
  (yank arg))

(defun mouse-kill-ring-save (click)
Jim Blandy's avatar
Jim Blandy committed
365 366
  "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
367
  (interactive "e")
368 369 370
  (mouse-set-mark-fast click)
  (kill-ring-save (point) (mark t))
  (mouse-show-mark))
Richard M. Stallman's avatar
Richard M. Stallman committed
371

Jim Blandy's avatar
Jim Blandy committed
372 373 374 375 376 377 378 379
;;; 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)

380
(defun mouse-save-then-kill-delete-region (beg end)
381 382
  ;; Delete just one char, so in case buffer is being modified
  ;; for the first time, the undo list records that fact.
383 384 385 386 387 388 389 390 391
  (delete-region beg
		 (+ beg (if (> end beg) 1 -1)))
  (let ((buffer-undo-list buffer-undo-list))
    ;; Undo that deletion--but don't change the undo list!
    (primitive-undo 1 buffer-undo-list)
    ;; Now delete the rest of the specified region,
    ;; but don't record it.
    (setq buffer-undo-list t)
    (delete-region beg end))
392 393 394 395 396 397 398 399
  (if (not (eq buffer-undo-list t))
      (let ((tail buffer-undo-list))
	;; Search back in buffer-undo-list for the string
	;; that came from the first delete-region.
	(while (and tail (not (stringp (car (car tail)))))
	  (setq tail (cdr tail)))
	;; Replace it with an entry for the entire deleted text.
	(and tail
400
	     (setcar tail (cons (car kill-ring) (min beg end)))))))
401

402
(defun mouse-save-then-kill (click)
403 404 405 406
  "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],
407 408 409 410 411 412
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." 
413
  (interactive "e")
414 415 416 417
  (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))
418 419 420 421
    (if (> mouse-selection-click-count 0)
	(if (not (and (eq last-command 'mouse-save-then-kill)
		      (equal click-posn
			     (car (cdr-safe (cdr-safe mouse-save-then-kill-posn))))))
422 423 424 425 426 427 428 429 430 431
	    ;; 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)))
432 433 434 435
	      ;; 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)))
436 437 438 439 440
	      (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))
441 442 443
	      (mouse-show-mark))
	  ;; If we click this button again without moving it,
	  ;; that time kill.
444
	  (mouse-save-then-kill-delete-region (point) (mark)))
445 446 447 448 449 450
      (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.
451
	  (mouse-save-then-kill-delete-region (point) (mark))
452
	(if (or (eq last-command 'mouse-save-then-kill)
453
		(and mark-active transient-mark-mode)
454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475
		(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))
476 477
	(setq mouse-save-then-kill-posn
	      (list (car kill-ring) (point) click-posn))))))
478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499

(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)
(global-set-key [M-mouse-2] 'mouse-kill-secondary)

;; 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")
  (let ((posn (event-start click)))
500 501 502 503 504 505 506 507 508 509
    (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)))))))
510 511 512 513 514 515 516 517

(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")
  (let ((posn (event-start click))
	beg
	(end (event-end click)))
518 519 520 521 522 523 524 525
    (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))))
526

527
(defun mouse-drag-secondary (start-event)
528
  "Set the secondary selection to the text that the mouse is dragged over.
529
Highlight the drag area as you move the mouse.
530 531
This must be bound to a button-down mouse event."
  (interactive "e")
532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548
  (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))))
549
      (overlay-put mouse-secondary-overlay 'face 'secondary-selection)
550
      (if (> click-count 0)
551 552
	  ;; Double or triple press: make an initial selection
	  ;; of one word or line.
553 554 555 556 557 558
	  (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)))
559
	;; Single-press: cancel any preexisting secondary selection.
560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627
	(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

	       ;; Ignore switch-frame events.
	       ((eq (car-safe event) 'switch-frame))

	       ;; Are we moving within the original window?
	       ((and (eq (posn-window end) start-window)
		     (integer-or-marker-p end-point))
		(if (/= start-point end-point)
		    (set-marker mouse-secondary-start nil))
		(let ((range (mouse-start-end start-point end-point
					      click-count)))
		  (move-overlay mouse-secondary-overlay
				(car range) (nth 1 range))))

	       ;; Are we moving on a different window on the same frame?
	       ((and (windowp (posn-window end))
		     (eq (window-frame (posn-window end)) start-frame))
		(let ((mouse-row
		       (+ (nth 1 (window-edges (posn-window end)))
			  (cdr (posn-col-row end)))))
		  (cond
		   ((< mouse-row top)
		    (mouse-scroll-subr
		     (- mouse-row top) mouse-secondary-overlay start-point))
		   ((and (not (eobp))
			 (>= mouse-row bottom))
		    (mouse-scroll-subr (1+ (- mouse-row bottom))
				       mouse-drag-overlay start-point)))))

	       (t
		(let ((mouse-y (cdr (cdr (mouse-position))))
		      (menu-bar-lines (or (cdr (assq 'menu-bar-lines
						     (frame-parameters)))
					  0)))

		  ;; Are we on the menu bar?
		  (and (integerp mouse-y) (< mouse-y menu-bar-lines)
		       (mouse-scroll-subr (- mouse-y menu-bar-lines)
					  mouse-secondary-overlay start-point))))))))

	(if (and (eq (get (event-basic-type event) 'event-kind) 'mouse-click)
		 (eq (posn-window (event-end event)) start-window)
		 (numberp (posn-point (event-end event))))
	    (if (marker-position mouse-secondary-start)
		(save-window-excursion
		  (delete-overlay mouse-secondary-overlay)
		  (select-window start-window)
		  (save-excursion
		    (goto-char mouse-secondary-start)
		    (sit-for 1)))
	      (kill-ring-save (overlay-start mouse-secondary-overlay)
			      (overlay-end mouse-secondary-overlay))))))))
628 629 630 631 632 633 634 635 636 637

(defun mouse-kill-secondary ()
  "Kill the text in the secondary selection."
  (interactive "*")
  (kill-region (overlay-start mouse-secondary-overlay)
	       (overlay-end mouse-secondary-overlay))
  (delete-overlay mouse-secondary-overlay)
  (setq mouse-secondary-overlay nil))

(defun mouse-secondary-save-then-kill (click)
638 639
  "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
640 641
at the front of the kill ring, this deletes the text.
Otherwise, it adds the text to the kill ring, like \\[kill-ring-save],
642 643 644 645 646 647
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." 
648
  (interactive "e")
649 650
  (let ((posn (event-start click))
	(click-posn (posn-point (event-start click)))
651 652 653
	;; Don't let a subsequent kill command append to this one:
	;; prevent setting this-command to kill-region.
	(this-command this-command))
654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684
    (if (> mouse-selection-click-count 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))
		  (move-overlay mouse-secondary-overlay
				(overlay-start mouse-secondary-overlay)
				(nth 1 range)))
	      ;; 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.
	  (progn
685 686 687 688
	    (mouse-save-then-kill-delete-region
	     (overlay-start mouse-secondary-overlay)
	     (overlay-end mouse-secondary-overlay))
	    (delete-overlay mouse-secondary-overlay)))
689 690 691 692 693 694 695
      (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
696 697 698 699
	    (mouse-save-then-kill-delete-region
	     (overlay-start mouse-secondary-overlay)
	     (overlay-end mouse-secondary-overlay))
	    (delete-overlay mouse-secondary-overlay))
700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730
	(if (overlay-start mouse-secondary-overlay)
	    ;; We have a selection, so adjust it.
	    (progn
	      (select-window (posn-window posn))
	      (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))
			(move-overlay mouse-secondary-overlay
				      (overlay-start mouse-secondary-overlay)
				      click-posn))
		    (setq deactivate-mark nil)))
	      (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))))
	  (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)))
		(set-buffer (window-buffer (posn-window (event-start click))))
		(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))))
731
	(setq mouse-save-then-kill-posn
732
	      (list (car kill-ring) (point) click-posn))))))
733

734
(defun mouse-buffer-menu (event)
735 736 737
  "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
738
  (interactive "e")
739 740 741 742
  (let ((menu
	 (list "Buffer Menu"
	       (cons "Select Buffer"
		     (let ((tail (buffer-list))
743
			   (maxbuf 0)
744
			   head)
745 746 747 748 749 750 751
		       (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))
752 753 754 755 756 757 758
		       (while tail
			 (let ((elt (car tail)))
			   (if (not (string-match "^ "
						  (buffer-name elt)))
			       (setq head (cons
					   (cons
					    (format
759 760
					     (format "%%%ds  %%s%%s  %%s"
						     maxbuf)
761
					     (buffer-name elt)
762 763 764 765 766
					     (if (buffer-modified-p elt)
						 "*" " ")
					     (save-excursion
					       (set-buffer elt)
					       (if buffer-read-only "%" " "))
767 768 769 770 771
					     (or (buffer-file-name elt) ""))
					    elt)
					   head))))
			 (setq tail (cdr tail)))
		       (reverse head))))))
772 773 774 775
    (let ((buf (x-popup-menu event menu))
	  (window (posn-window (event-start event))))
      (if buf
	  (progn
776
	    (or (framep window) (select-window window))
777
	    (switch-to-buffer buf))))))
Richard M. Stallman's avatar
Richard M. Stallman committed
778

779
;;; These need to be rewritten for the new scroll bar implementation.
Jim Blandy's avatar
Jim Blandy committed
780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885

;;;!! ;; 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)
886

Jim Blandy's avatar
Jim Blandy committed
887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020
;;;!! ;;;;
;;;!! ;;;; 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))
;;;!! 
;;;!! ;;
1021
;;;!! ;; This scrolls while button is depressed.  Use preferable in scroll bar.
Jim Blandy's avatar
Jim Blandy committed
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
;;;!! ;;
;;;!! 
;;;!! (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))))))
1104

1105 1106
;; Choose a completion with the mouse.

1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120
;; Delete the longest partial match for STRING
;; that can be found before POINT.
(defun mouse-delete-max-match (string)
  (let ((len (min (length string)
		  (- (point-max) (point-min)))))
    (goto-char (max (point-min) (- (point) (length string))))
    (while (and (> len 0)
		(let ((tail (buffer-substring (point)
					      (+ (point) len))))
		  (not (string= tail (substring string 0 len)))))
      (setq len (1- len))
      (forward-char 1))
    (delete-char len)))

1121
(defun mouse-choose-completion (event)
1122
  "Click on an alternative in the `*Completions*' buffer to choose it."
1123
  (interactive "e")
1124 1125
  (let ((buffer (window-buffer))
        choice)
1126 1127 1128 1129 1130 1131 1132 1133
    (save-excursion
      (set-buffer (window-buffer (posn-window (event-start event))))
      (save-excursion
	(goto-char (posn-point (event-start event)))
	(skip-chars-backward "^ \t\n")
	(let ((beg (point)))
	  (skip-chars-forward "^ \t\n")
	  (setq choice (buffer-substring beg (point))))))
1134 1135
    (set-buffer buffer)
    (mouse-delete-max-match choice)
1136
    (insert choice)
1137 1138
    (and (equal buffer (window-buffer (minibuffer-window)))
	 (minibuffer-complete-and-exit))))
1139

1140 1141
;; Font selection.

1142 1143 1144
(defun font-menu-add-default ()
  (let* ((default (cdr (assq 'font (frame-parameters (selected-frame)))))
	 (font-alist x-fixed-font-alist)
1145
	 (elt (or (assoc "Misc" font-alist) (nth 1 font-alist))))
1146 1147 1148
    (if (assoc "Default" elt)
	(delete (assoc "Default" elt) elt))
    (setcdr elt
1149
	    (cons (list "Default"
1150 1151 1152
			(cdr (assq 'font (frame-parameters (selected-frame)))))
		  (cdr elt)))))

1153 1154 1155
(defvar x-fixed-font-alist
  '("Font menu"
    ("Misc"
1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171
     ("6x10" "-misc-fixed-medium-r-semicondensed--10-110-75-75-c-60-*-1")
     ("6x12" "-misc-fixed-medium-r-semicondensed--12-110-75-75-c-60-*-1")
     ("6x13" "-misc-fixed-medium-r-semicondensed--13-120-75-75-c-60-*-1")
     ("lucida 13"
      "-b&h-lucidatypewriter-medium-r-normal-sans-0-0-0-0-m-0-*-1")
     ("7x13" "-misc-fixed-medium-r-normal--13-120-75-75-c-70-*-1")
     ("7x14" "-misc-fixed-medium-r-normal--14-130-75-75-c-70-*-1")
     ("9x15" "-misc-fixed-medium-r-normal--15-140-*-*-c-*-*-1")
     ("")
     ("clean 8x8" "-schumacher-clean-medium-r-normal--*-80-*-*-c-*-*-1")
     ("clean 8x14" "-schumacher-clean-medium-r-normal--*-140-*-*-c-*-*-1")
     ("clean 8x10" "-schumacher-clean-medium-r-normal--*-100-*-*-c-*-*-1")
     ("clean 8x16" "-schumacher-clean-medium-r-normal--*-160-*-*-c-*-*-1")
     ("")
     ("sony 8x16" "-sony-fixed-medium-r-normal--16-120-100-100-c-80-*-1")
     ("")
1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184
     ("fixed" "fixed")
     ("10x20" "10x20")
     ("11x18" "11x18")
     ("12x24" "12x24"))
;;; We don't seem to have these; who knows what they are.
;;;    ("fg-18" "fg-18")
;;;    ("fg-25" "fg-25")
;;;    ("lucidasanstypewriter-12" "lucidasanstypewriter-12")
;;;    ("lucidasanstypewriter-bold-14" "lucidasanstypewriter-bold-14")
;;;    ("lucidasanstypewriter-bold-24" "lucidasanstypewriter-bold-24")
;;;    ("lucidatypewriter-bold-r-24" "-b&h-lucidatypewriter-bold-r-normal-sans-24-240-75-75-m-140-iso8859-1")
;;;    ("fixed-medium-20" "-misc-fixed-medium-*-*-*-20-*-*-*-*-*-*-*")
    ("Courier"
1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208
     ("8" "-adobe-courier-medium-r-normal--*-80-*-*-m-*-iso8859-1")
     ("10" "-adobe-courier-medium-r-normal--*-100-*-*-m-*-iso8859-1")
     ("12" "-adobe-courier-medium-r-normal--*-120-*-*-m-*-iso8859-1")
     ("14" "-adobe-courier-medium-r-normal--*-140-*-*-m-*-iso8859-1")
     ("18" "-adobe-courier-medium-r-normal--*-180-*-*-m-*-iso8859-1")
     ("24" "-adobe-courier-medium-r-normal--*-240-*-*-m-*-iso8859-1")
     ("8 bold" "-adobe-courier-bold-r-normal--*-80-*-*-m-*-iso8859-1")
     ("10 bold" "-adobe-courier-bold-r-normal--*-100-*-*-m-*-iso8859-1")
     ("12 bold" "-adobe-courier-bold-r-normal--*-120-*-*-m-*-iso8859-1")
     ("14 bold" "-adobe-courier-bold-r-normal--*-140-*-*-m-*-iso8859-1")
     ("18 bold" "-adobe-courier-bold-r-normal--*-180-*-*-m-*-iso8859-1")
     ("24 bold" "-adobe-courier-bold-r-normal--*-240-*-*-m-*-iso8859-1")
     ("8 slant" "-adobe-courier-medium-o-normal--*-80-*-*-m-*-iso8859-1")
     ("10 slant" "-adobe-courier-medium-o-normal--*-100-*-*-m-*-iso8859-1")
     ("12 slant" "-adobe-courier-medium-o-normal--*-120-*-*-m-*-iso8859-1")
     ("14 slant" "-adobe-courier-medium-o-normal--*-140-*-*-m-*-iso8859-1")
     ("18 slant" "-adobe-courier-medium-o-normal--*-180-*-*-m-*-iso8859-1")
     ("24 slant" "-adobe-courier-medium-o-normal--*-240-*-*-m-*-iso8859-1")
     ("8 bold slant" "-adobe-courier-bold-o-normal--*-80-*-*-m-*-iso8859-1")
     ("10 bold slant" "-adobe-courier-bold-o-normal--*-100-*-*-m-*-iso8859-1")
     ("12 bold slant" "-adobe-courier-bold-o-normal--*-120-*-*-m-*-iso8859-1")
     ("14 bold slant" "-adobe-courier-bold-o-normal--*-140-*-*-m-*-iso8859-1")
     ("18 bold slant" "-adobe-courier-bold-o-normal--*-180-*-*-m-*-iso8859-1")
     ("24 bold slant" "-adobe-courier-bold-o-normal--*-240-*-*-m-*-iso8859-1"))
1209 1210 1211
    )
  "X fonts suitable for use in Emacs.")

Jim Blandy's avatar
Jim Blandy committed
1212
(defun mouse-set-font (&optional font)
1213 1214 1215
  "Select an emacs font from a list of known good fonts"
  (interactive
   (x-popup-menu last-nonmenu-event x-fixed-font-alist))
Jim Blandy's avatar
Jim Blandy committed
1216
  (if font
1217 1218 1219 1220 1221 1222 1223 1224 1225
      (progn (modify-frame-parameters (selected-frame)
				      (list (cons 'font font)))
	     ;; Update some standard faces too.
	     (set-face-font 'bold nil (selected-frame)) 
	     (make-face-bold 'bold (selected-frame) t)
	     (set-face-font 'italic nil (selected-frame))
	     (make-face-italic 'italic (selected-frame) t)
	     (set-face-font 'bold-italic nil (selected-frame))
	     (make-face-bold-italic 'bold-italic (selected-frame) t))))
Jim Blandy's avatar
Jim Blandy committed
1226 1227 1228

;;; Bindings for mouse commands.

1229
(define-key global-map [down-mouse-1] 'mouse-drag-region)
Jim Blandy's avatar
Jim Blandy committed
1230 1231
(global-set-key [mouse-1]	'mouse-set-point)
(global-set-key [drag-mouse-1]	'mouse-set-region)
1232

1233 1234 1235 1236
;; These are tested for in mouse-drag-region.
(global-set-key [double-mouse-1] 'mouse-set-point)
(global-set-key [triple-mouse-1] 'mouse-set-point)

Jim Blandy's avatar
Jim Blandy committed
1237 1238
(global-set-key [mouse-2]	'mouse-yank-at-click)
(global-set-key [mouse-3]	'mouse-save-then-kill)
1239

Jim Blandy's avatar
Jim Blandy committed
1240 1241 1242 1243
;; By binding these to down-going events, we let the user use the up-going
;; event to make the selection, saving a click.
(global-set-key [C-down-mouse-1]	'mouse-buffer-menu)
(global-set-key [C-down-mouse-3]	'mouse-set-font)
1244

1245 1246
;; Replaced with dragging mouse-1
;; (global-set-key [S-mouse-1]	'mouse-set-mark)
1247

Jim Blandy's avatar
Jim Blandy committed
1248 1249 1250
(global-set-key [mode-line mouse-1] 'mouse-delete-other-windows)
(global-set-key [mode-line mouse-3] 'mouse-delete-window)
(global-set-key [mode-line S-mouse-2] 'mouse-split-window-horizontally)
1251

1252 1253
;; Define the mouse help menu tree.

1254
(defvar help-menu-map '(keymap "Help"))
Jim Blandy's avatar
Jim Blandy committed
1255 1256 1257 1258 1259 1260 1261 1262
(global-set-key [C-down-mouse-2] help-menu-map)

(defvar help-apropos-map (make-sparse-keymap "Is there a command that..."))
(defvar help-keys-map (make-sparse-keymap "Key Commands <==> Functions"))
(defvar help-manual-map (make-sparse-keymap "Manual and tutorial"))
(defvar help-misc-map (make-sparse-keymap "Odds and ends"))
(defvar help-modes-map (make-sparse-keymap "Modes"))
(defvar help-admin-map (make-sparse-keymap "Administrivia"))
1263

1264
(define-key help-menu-map [apropos]
1265
  (cons "@Is there a command that..." help-apropos-map))
1266
(define-key help-menu-map [keys]
1267
  (cons "@Key Commands <==> Functions" help-keys-map))
1268
(define-key help-menu-map [manuals]
1269
  (cons "@Manual and tutorial" help-manual-map))
1270
(define-key help-menu-map [misc]
1271
  (cons "@Odds and ends" help-misc-map))
1272
(define-key help-menu-map [modes]
1273
  (cons "@Modes" help-modes-map))
1274
(define-key help-menu-map [admin]
1275
  (cons "@Administrivia" help-admin-map))
1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303

(define-key help-apropos-map "c" '("Command Apropos" . command-apropos))
(define-key help-apropos-map "a" '("Apropos" . apropos))

(define-key help-keys-map "b"
  '("List all keystroke commands" . describe-bindings))
(define-key help-keys-map "c"
  '("Describe key briefly" . describe-key-briefly))
(define-key help-keys-map "k"
  '("Describe key verbose" . describe-key))
(define-key help-keys-map "f"
  '("Describe Lisp function" . describe-function))
(define-key help-keys-map "w"
  '("Where is this command" . where-is))

(define-key help-manual-map "i" '("Info system" . info))
(define-key help-manual-map "t"
  '("Invoke Emacs tutorial" . help-with-tutorial))<