lisp/mouse.el

   1 ;;; mouse.el --- window system-independent mouse support.
   2
   3 ;;; Copyright (C) 1993, 1994, 1995 Free Software Foundation, Inc.
   4
   5 ;; Maintainer: FSF
   6 ;; Keywords: hardware
   7
   8 ;;; This file is part of GNU Emacs.
   9
  10 ;;; GNU Emacs is free software; you can redistribute it and/or modify
  11 ;;; it under the terms of the GNU General Public License as published by
  12 ;;; the Free Software Foundation; either version 2, or (at your option)
  13 ;;; any later version.
  14
  15 ;;; GNU Emacs is distributed in the hope that it will be useful,
  16 ;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 ;;; GNU General Public License for more details.
  19
  20 ;;; You should have received a copy of the GNU General Public License
  21 ;;; along with GNU Emacs; see the file COPYING.  If not, write to
  22 ;;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
  23
  24 ;;; Commentary:
  25
  26 ;; This package provides various useful commands (including help
  27 ;; system access) through the mouse.  All this code assumes that mouse
  28 ;; interpretation has been abstracted into Emacs input events.
  29 ;;
  30 ;; The code is rather X-dependent.
  31
  32 ;;; Code:
  33
  34 ;;; Utility functions.
  35
  36 ;;; Indent track-mouse like progn.
  37 (put 'track-mouse 'lisp-indent-function 0)
  38
  39 (defvar mouse-yank-at-point nil
  40   "*If non-nil, mouse yank commands yank at point instead of at click.")
  41 \f
  42 ;; Provide a mode-specific menu on a mouse button.
  43
  44 (defun mouse-major-mode-menu (event)
  45   "Pop up a mode-specific menu of mouse commands."
  46   ;; Switch to the window clicked on, because otherwise
  47   ;; the mode's commands may not make sense.
  48   (interactive "@e")
  49   (let ((newmap (make-sparse-keymap))
  50         (unread-command-events (list event)))
  51     ;; Make a keymap in which our last command leads to a menu
  52     (define-key newmap (vector (car event))
  53       (nconc (make-sparse-keymap "Menu")
  54              (mouse-major-mode-menu-1
  55               (and (current-local-map)
  56                    (lookup-key (current-local-map) [menu-bar])))))
  57     (mouse-major-mode-menu-compute-equiv-keys newmap)
  58     (command-execute
  59      ;; Make NEWMAP override the usual definition
  60      ;; of the mouse button that got us here.
  61      ;; Then read the user's menu choice.
  62      (let ((minor-mode-map-alist
  63             (cons (cons t newmap) minor-mode-map-alist)))
  64        (lookup-key newmap (read-key-sequence ""))))))
  65
  66 ;; Compute and cache the equivalent keys in MENU and all its submenus.
  67 (defun mouse-major-mode-menu-compute-equiv-keys (menu)
  68   (and (eq (car menu) 'keymap)
  69        (x-popup-menu nil menu))
  70   (while menu
  71     (and (consp (car menu))
  72          (consp (cdr (car menu)))
  73          (let ((tail (cdr (car menu))))
  74            (while (and (consp tail)
  75                        (not (eq (car tail) 'keymap)))
  76              (setq tail (cdr tail)))
  77            (if (consp tail)
  78                (mouse-major-mode-menu-compute-equiv-keys tail))))
  79     (setq menu (cdr menu))))
  80
  81 ;; Given a mode's menu bar keymap,
  82 ;; if it defines exactly one menu bar menu,
  83 ;; return just that menu.
  84 ;; Otherwise return a menu for all of them.
  85 (defun mouse-major-mode-menu-1 (menubar)
  86   (if menubar
  87       (let ((tail menubar)
  88             submap)
  89         (while tail
  90           (if (consp (car tail))
  91               (if submap
  92                   (setq submap t)
  93                 (setq submap (cdr (car tail)))))
  94           (setq tail (cdr tail)))
  95         (if (eq submap t) menubar
  96           submap))))
  97 \f
  98 ;; Commands that operate on windows.
  99
 100 (defun mouse-minibuffer-check (event)
 101   (let ((w (posn-window (event-start event))))
 102     (and (window-minibuffer-p w)
 103          (not (minibuffer-window-active-p w))
 104          (error "Minibuffer window is not active")))
 105   ;; Give temporary modes such as isearch a chance to turn off.
 106   (run-hooks 'mouse-leave-buffer-hook))
 107
 108 (defun mouse-delete-window (click)
 109   "Delete the window you click on.
 110 This must be bound to a mouse click."
 111   (interactive "e")
 112   (mouse-minibuffer-check click)
 113   (delete-window (posn-window (event-start click))))
 114
 115 (defun mouse-select-window (click)
 116   "Select the window clicked on; don't move point."
 117   (interactive "e")
 118   (mouse-minibuffer-check click)
 119   (let ((oframe (selected-frame))
 120         (frame (window-frame (posn-window (event-start click)))))
 121     (select-window (posn-window (event-start click)))
 122     (raise-frame frame)
 123     (select-frame frame)
 124     (or (eq frame oframe)
 125         (set-mouse-position (selected-frame) (1- (frame-width)) 0))
 126     (unfocus-frame)))
 127
 128 (defun mouse-tear-off-window (click)
 129   "Delete the window clicked on, and create a new frame displaying its buffer."
 130   (interactive "e")
 131   (mouse-minibuffer-check click)
 132   (let* ((window (posn-window (event-start click)))
 133          (buf (window-buffer window))
 134          (frame (make-frame)))
 135     (select-frame frame)
 136     (switch-to-buffer buf)
 137     (delete-window window)))
 138
 139 (defun mouse-delete-other-windows ()
 140   "Delete all window except the one you click on."
 141   (interactive "@")
 142   (delete-other-windows))
 143
 144 (defun mouse-split-window-vertically (click)
 145   "Select Emacs window mouse is on, then split it vertically in half.
 146 The window is split at the line clicked on.
 147 This command must be bound to a mouse click."
 148   (interactive "@e")
 149   (mouse-minibuffer-check click)
 150   (let ((start (event-start click)))
 151     (select-window (posn-window start))
 152     (let ((new-height (1+ (cdr (posn-col-row (event-end click)))))
 153           (first-line window-min-height)
 154           (last-line (- (window-height) window-min-height)))
 155       (if (< last-line first-line)
 156           (error "Window too short to split")
 157         (split-window-vertically
 158          (min (max new-height first-line) last-line))))))
 159
 160 (defun mouse-split-window-horizontally (click)
 161   "Select Emacs window mouse is on, then split it horizontally in half.
 162 The window is split at the column clicked on.
 163 This command must be bound to a mouse click."
 164   (interactive "@e")
 165   (mouse-minibuffer-check click)
 166   (let ((start (event-start click)))
 167     (select-window (posn-window start))
 168     (let ((new-width (1+ (car (posn-col-row (event-end click)))))
 169           (first-col window-min-width)
 170           (last-col (- (window-width) window-min-width)))
 171       (if (< last-col first-col)
 172           (error "Window too narrow to split")
 173         (split-window-horizontally
 174          (min (max new-width first-col) last-col))))))
 175
 176 (defun mouse-drag-mode-line (start-event)
 177   "Change the height of a window by dragging on the mode line."
 178   (interactive "e")
 179   ;; Give temporary modes such as isearch a chance to turn off.
 180   (run-hooks 'mouse-leave-buffer-hook)
 181   (let ((done nil)
 182         (echo-keystrokes 0)
 183         (start-event-frame (window-frame (car (car (cdr start-event)))))
 184         (start-event-window (car (car (cdr start-event))))
 185         (start-nwindows (count-windows t))
 186         (old-selected-window (selected-window))
 187         should-enlarge-minibuffer
 188         event mouse minibuffer y top bot edges wconfig params growth)
 189     (setq params (frame-parameters))
 190     (if (and (not (setq minibuffer (cdr (assq 'minibuffer params))))
 191              (one-window-p t))
 192         (error "Attempt to resize sole window"))
 193     (track-mouse
 194       (progn
 195         ;; enlarge-window only works on the selected window, so
 196         ;; we must select the window where the start event originated.
 197         ;; unwind-protect will restore the old selected window later.
 198         (select-window start-event-window)
 199         ;; if this is the bottommost ordinary window, then to
 200         ;; move its modeline the minibuffer must be enlarged.
 201         (setq should-enlarge-minibuffer
 202               (and minibuffer
 203                    (not (one-window-p t))
 204                    (= (nth 1 (window-edges minibuffer))
 205                       (nth 3 (window-edges)))))
 206         ;; loop reading events and sampling the position of
 207         ;; the mouse.
 208         (while (not done)
 209           (setq event (read-event)
 210                 mouse (mouse-position))
 211           ;; do nothing if
 212           ;;   - there is a switch-frame event.
 213           ;;   - the mouse isn't in the frame that we started in
 214           ;;   - the mouse isn't in any Emacs frame
 215           ;; drag if
 216           ;;   - there is a mouse-movement event
 217           ;;   - there is a scroll-bar-movement event
 218           ;;     (same as mouse movement for our purposes)
 219           ;; quit if
 220           ;;   - there is a keyboard event or some other unknown event
 221           ;;     unknown event.
 222           (cond ((integerp event)
 223                  (setq done t))
 224                 ((eq (car event) 'switch-frame)
 225                  nil)
 226                 ((not (memq (car event)
 227                             '(mouse-movement scroll-bar-movement)))
 228                  (if (consp event)
 229                      (setq unread-command-events
 230                            (cons event unread-command-events)))
 231                  (setq done t))
 232                 ((not (eq (car mouse) start-event-frame))
 233                  nil)
 234                 ((null (car (cdr mouse)))
 235                  nil)
 236                 (t
 237                  (setq y (cdr (cdr mouse))
 238                        edges (window-edges)
 239                        top (nth 1 edges)
 240                        bot (nth 3 edges))
 241                  ;; scale back a move that would make the
 242                  ;; window too short.
 243                  (cond ((< (- y top -1) window-min-height)
 244                         (setq y (+ top window-min-height -1))))
 245                  ;; compute size change needed
 246                  (setq growth (- y bot -1)
 247                        wconfig (current-window-configuration))
 248                  ;; grow/shrink minibuffer?
 249                  (if should-enlarge-minibuffer
 250                      (progn
 251                        ;; yes.  briefly select minibuffer so
 252                        ;; enlarge-window will affect the
 253                        ;; correct window.
 254                        (select-window minibuffer)
 255                        ;; scale back shrinkage if it would
 256                        ;; make the minibuffer less than 1
 257                        ;; line tall.
 258                        (if (and (> growth 0)
 259                                 (< (- (window-height minibuffer)
 260                                       growth)
 261                                    1))
 262                            (setq growth (1- (window-height minibuffer))))
 263                        (enlarge-window (- growth))
 264                        (select-window start-event-window))
 265                    ;; no.  grow/shrink the selected window
 266                    (enlarge-window growth))
 267                  ;; if this window's growth caused another
 268                  ;; window to be deleted because it was too
 269                  ;; short, rescind the change.
 270                  ;;
 271                  ;; if size change caused space to be stolen
 272                  ;; from a window above this one, rescind the
 273                  ;; change, but only if we didn't grow/srhink
 274                  ;; the minibuffer.  minibuffer size changes
 275                  ;; can cause all windows to shrink... no way
 276                  ;; around it.
 277                  (if (or (/= start-nwindows (count-windows t))
 278                          (and (not should-enlarge-minibuffer)
 279                               (/= top (nth 1 (window-edges)))))
 280                      (set-window-configuration wconfig)))))))))
 281 \f
 282 (defun mouse-set-point (event)
 283   "Move point to the position clicked on with the mouse.
 284 This should be bound to a mouse click event type."
 285   (interactive "e")
 286   (mouse-minibuffer-check event)
 287   ;; Use event-end in case called from mouse-drag-region.
 288   ;; If EVENT is a click, event-end and event-start give same value.
 289   (let ((posn (event-end event)))
 290     (if (not (windowp (posn-window posn)))
 291         (error "Cursor not in text area of window"))
 292     (select-window (posn-window posn))
 293     (if (numberp (posn-point posn))
 294         (goto-char (posn-point posn)))))
 295
 296 (defvar mouse-last-region-beg nil)
 297 (defvar mouse-last-region-end nil)
 298 (defvar mouse-last-region-tick nil)
 299
 300 (defun mouse-region-match ()
 301   "Return non-nil if there's an active region that was set with the mouse."
 302   (and (mark t) mark-active
 303        (eq mouse-last-region-beg (region-beginning))
 304        (eq mouse-last-region-end (region-end))
 305        (eq mouse-last-region-tick (buffer-modified-tick))))
 306
 307 (defun mouse-set-region (click)
 308   "Set the region to the text dragged over, and copy to kill ring.
 309 This should be bound to a mouse drag event."
 310   (interactive "e")
 311   (mouse-minibuffer-check click)
 312   (let ((posn (event-start click))
 313         (end (event-end click)))
 314     (select-window (posn-window posn))
 315     (if (numberp (posn-point posn))
 316         (goto-char (posn-point posn)))
 317     ;; If mark is highlighted, no need to bounce the cursor.
 318     (or (and transient-mark-mode
 319              (framep (selected-frame)))
 320         (sit-for 1))
 321     (push-mark)
 322     (set-mark (point))
 323     (if (numberp (posn-point end))
 324         (goto-char (posn-point end)))
 325     ;; Don't set this-command to kill-region, so that a following
 326     ;; C-w will not double the text in the kill ring.
 327     (let (this-command)
 328       (copy-region-as-kill (mark) (point)))
 329     (mouse-set-region-1)))
 330
 331 (defun mouse-set-region-1 ()
 332   (setq mouse-last-region-beg (region-beginning))
 333   (setq mouse-last-region-end (region-end))
 334   (setq mouse-last-region-tick (buffer-modified-tick)))
 335
 336 (defvar mouse-scroll-delay 0.25
 337   "*The pause between scroll steps caused by mouse drags, in seconds.
 338 If you drag the mouse beyond the edge of a window, Emacs scrolls the
 339 window to bring the text beyond that edge into view, with a delay of
 340 this many seconds between scroll steps.  Scrolling stops when you move
 341 the mouse back into the window, or release the button.
 342 This variable's value may be non-integral.
 343 Setting this to zero causes Emacs to scroll as fast as it can.")
 344
 345 (defun mouse-scroll-subr (window jump &optional overlay start)
 346   "Scroll the window WINDOW, JUMP lines at a time, until new input arrives.
 347 If OVERLAY is an overlay, let it stretch from START to the far edge of
 348 the newly visible text.
 349 Upon exit, point is at the far edge of the newly visible text."
 350   (let ((opoint (point)))
 351     (while (progn
 352              (goto-char (window-start window))
 353              (if (not (zerop (vertical-motion jump window)))
 354                  (progn
 355                    (set-window-start window (point))
 356                    (if (natnump jump)
 357                        (progn
 358                          (goto-char (window-end window))
 359                          ;; window-end doesn't reflect the window's new
 360                          ;; start position until the next redisplay.  Hurrah.
 361                          (vertical-motion (1- jump) window))
 362                      (goto-char (window-start window)))
 363                    (if overlay
 364                        (move-overlay overlay start (point)))
 365                    ;; Now that we have scrolled WINDOW properly,
 366                    ;; put point back where it was for the redisplay
 367                    ;; so that we don't mess up the selected window.
 368                    (or (eq window (selected-window))
 369                        (goto-char opoint))
 370                    (sit-for mouse-scroll-delay)))))
 371     (or (eq window (selected-window))
 372         (goto-char opoint))))
 373
 374 (defvar mouse-drag-overlay (make-overlay 1 1))
 375 (overlay-put mouse-drag-overlay 'face 'region)
 376
 377 (defvar mouse-selection-click-count 0)
 378
 379 (defun mouse-drag-region (start-event)
 380   "Set the region to the text that the mouse is dragged over.
 381 Highlight the drag area as you move the mouse.
 382 This must be bound to a button-down mouse event.
 383 In Transient Mark mode, the highlighting remains once you
 384 release the mouse button.  Otherwise, it does not."
 385   (interactive "e")
 386   (mouse-minibuffer-check start-event)
 387   (let* ((start-posn (event-start start-event))
 388          (start-point (posn-point start-posn))
 389          (start-window (posn-window start-posn))
 390          (start-frame (window-frame start-window))
 391          (bounds (window-edges start-window))
 392          (top (nth 1 bounds))
 393          (bottom (if (window-minibuffer-p start-window)
 394                      (nth 3 bounds)
 395                    ;; Don't count the mode line.
 396                    (1- (nth 3 bounds))))
 397          (click-count (1- (event-click-count start-event))))
 398     (setq mouse-selection-click-count click-count)
 399     (mouse-set-point start-event)
 400     (let ((range (mouse-start-end start-point start-point click-count)))
 401       (move-overlay mouse-drag-overlay (car range) (nth 1 range)
 402                     (window-buffer start-window)))
 403     (deactivate-mark)
 404     (let (event end end-point)
 405       (track-mouse
 406         (while (progn
 407                  (setq event (read-event))
 408                  (or (mouse-movement-p event)
 409                      (eq (car-safe event) 'switch-frame)))
 410           (if (eq (car-safe event) 'switch-frame)
 411               nil
 412             (setq end (event-end event)
 413                   end-point (posn-point end))
 414
 415             (cond
 416              ;; Are we moving within the original window?
 417              ((and (eq (posn-window end) start-window)
 418                    (integer-or-marker-p end-point))
 419               (goto-char end-point)
 420               (let ((range (mouse-start-end start-point (point) click-count)))
 421                 (move-overlay mouse-drag-overlay (car range) (nth 1 range))))
 422
 423              (t
 424               (let ((mouse-row (cdr (cdr (mouse-position)))))
 425                 (cond
 426                  ((null mouse-row))
 427                  ((< mouse-row top)
 428                   (mouse-scroll-subr start-window (- mouse-row top)
 429                                      mouse-drag-overlay start-point))
 430                  ((>= mouse-row bottom)
 431                   (mouse-scroll-subr start-window (1+ (- mouse-row bottom))
 432                                      mouse-drag-overlay start-point)))))))))
 433       (if (consp event)
 434           (let ((fun (key-binding (vector (car event)))))
 435             ;; Run the binding of the terminating up-event, if possible.
 436             ;; In the case of a multiple click, it gives the wrong results,
 437             ;; because it would fail to set up a region.
 438             (if (and (= (mod mouse-selection-click-count 3) 0) (fboundp fun))
 439                 (progn
 440                   (setq this-command fun)
 441                   ;; Delete the overlay before calling the function,
 442                   ;; because delete-overlay increases buffer-modified-tick.
 443                   (delete-overlay mouse-drag-overlay)
 444                   (funcall fun event))
 445               (if (not (= (overlay-start mouse-drag-overlay)
 446                           (overlay-end mouse-drag-overlay)))
 447                   (let (last-command this-command)
 448                     (push-mark (overlay-start mouse-drag-overlay) t t)
 449                     (goto-char (overlay-end mouse-drag-overlay))
 450                     (delete-overlay mouse-drag-overlay)
 451                     (copy-region-as-kill (point) (mark t))
 452                     (mouse-set-region-1))
 453                 (goto-char (overlay-end mouse-drag-overlay))
 454                 (setq this-command 'mouse-set-point)
 455                 (delete-overlay mouse-drag-overlay))))
 456         (delete-overlay mouse-drag-overlay)))))
 457 \f
 458 ;; Commands to handle xterm-style multiple clicks.
 459
 460 (defun mouse-skip-word (dir)
 461   "Skip over word, over whitespace, or over identical punctuation.
 462 If DIR is positive skip forward; if negative, skip backward."
 463   (let* ((char (following-char))
 464          (syntax (char-to-string (char-syntax char))))
 465     (if (or (string= syntax "w") (string= syntax " "))
 466         (if (< dir 0)
 467             (skip-syntax-backward syntax)
 468           (skip-syntax-forward syntax))
 469       (if (< dir 0)
 470           (while (and (not (bobp)) (= (preceding-char) char))
 471             (forward-char -1))
 472         (while (and (not (eobp)) (= (following-char) char))
 473           (forward-char 1))))))
 474
 475 ;; Return a list of region bounds based on START and END according to MODE.
 476 ;; If MODE is 0 then set point to (min START END), mark to (max START END).
 477 ;; If MODE is 1 then set point to start of word at (min START END),
 478 ;; mark to end of word at (max START END).
 479 ;; If MODE is 2 then do the same for lines.
 480 (defun mouse-start-end (start end mode)
 481   (if (> start end)
 482       (let ((temp start))
 483         (setq start end
 484               end temp)))
 485   (setq mode (mod mode 3))
 486   (cond ((= mode 0)
 487          (list start end))
 488         ((and (= mode 1)
 489               (= start end)
 490               (char-after start)
 491               (= (char-syntax (char-after start)) ?\())
 492          (list start
 493                (save-excursion
 494                  (goto-char start)
 495                  (forward-sexp 1)
 496                  (point))))
 497         ((and (= mode 1)
 498               (= start end)
 499               (char-after start)
 500               (= (char-syntax (char-after start)) ?\)))
 501          (list (save-excursion
 502                  (goto-char (1+ start))
 503                  (backward-sexp 1)
 504                  (point))
 505                (1+ start)))
 506         ((= mode 1)
 507          (list (save-excursion
 508                  (goto-char start)
 509                  (mouse-skip-word -1)
 510                  (point))
 511                (save-excursion
 512                  (goto-char end)
 513                  (mouse-skip-word 1)
 514                  (point))))
 515         ((= mode 2)
 516          (list (save-excursion
 517                  (goto-char start)
 518                  (beginning-of-line 1)
 519                  (point))
 520                (save-excursion
 521                  (goto-char end)
 522                  (forward-line 1)
 523                  (point))))))
 524 \f
 525 ;; Subroutine: set the mark where CLICK happened,
 526 ;; but don't do anything else.
 527 (defun mouse-set-mark-fast (click)
 528   (mouse-minibuffer-check click)
 529   (let ((posn (event-start click)))
 530     (select-window (posn-window posn))
 531     (if (numberp (posn-point posn))
 532         (push-mark (posn-point posn) t t))))
 533
 534 ;; Momentarily show where the mark is, if highlighting doesn't show it.
 535 (defun mouse-show-mark ()
 536   (or transient-mark-mode
 537       (save-excursion
 538         (goto-char (mark t))
 539         (sit-for 1))))
 540
 541 (defun mouse-set-mark (click)
 542   "Set mark at the position clicked on with the mouse.
 543 Display cursor at that position for a second.
 544 This must be bound to a mouse click."
 545   (interactive "e")
 546   (mouse-minibuffer-check click)
 547   (select-window (posn-window (event-start click)))
 548   ;; We don't use save-excursion because that preserves the mark too.
 549   (let ((point-save (point)))
 550     (unwind-protect
 551         (progn (mouse-set-point click)
 552                (push-mark nil t t)
 553                (or transient-mark-mode
 554                    (sit-for 1)))
 555       (goto-char point-save))))
 556
 557 (defun mouse-kill (click)
 558   "Kill the region between point and the mouse click.
 559 The text is saved in the kill ring, as with \\[kill-region]."
 560   (interactive "e")
 561   (mouse-minibuffer-check click)
 562   (let* ((posn (event-start click))
 563          (click-posn (posn-point posn)))
 564     (select-window (posn-window posn))
 565     (if (numberp click-posn)
 566         (kill-region (min (point) click-posn)
 567                      (max (point) click-posn)))))
 568
 569 (defun mouse-yank-at-click (click arg)
 570   "Insert the last stretch of killed text at the position clicked on.
 571 Also move point to one end of the text thus inserted (normally the end).
 572 Prefix arguments are interpreted as with \\[yank].
 573 If `mouse-yank-at-point' is non-nil, insert at point
 574 regardless of where you click."
 575   (interactive "e\nP")
 576   ;; Give temporary modes such as isearch a chance to turn off.
 577   (run-hooks 'mouse-leave-buffer-hook)
 578   (or mouse-yank-at-point (mouse-set-point click))
 579   (setq this-command 'yank)
 580   (yank arg))
 581
 582 (defun mouse-kill-ring-save (click)
 583   "Copy the region between point and the mouse click in the kill ring.
 584 This does not delete the region; it acts like \\[kill-ring-save]."
 585   (interactive "e")
 586   (mouse-set-mark-fast click)
 587   (let (this-command last-command)
 588     (kill-ring-save (point) (mark t)))
 589   (mouse-show-mark))
 590
 591 ;;; This function used to delete the text between point and the mouse
 592 ;;; whenever it was equal to the front of the kill ring, but some
 593 ;;; people found that confusing.
 594
 595 ;;; A list (TEXT START END), describing the text and position of the last
 596 ;;; invocation of mouse-save-then-kill.
 597 (defvar mouse-save-then-kill-posn nil)
 598
 599 (defun mouse-save-then-kill-delete-region (beg end)
 600   ;; We must make our own undo boundaries
 601   ;; because they happen automatically only for the current buffer.
 602   (undo-boundary)
 603   (if (or (= beg end) (eq buffer-undo-list t))
 604       ;; If we have no undo list in this buffer,
 605       ;; just delete.
 606       (delete-region beg end)
 607     ;; Delete, but make the undo-list entry share with the kill ring.
 608     ;; First, delete just one char, so in case buffer is being modified
 609     ;; for the first time, the undo list records that fact.
 610     (let (before-change-function after-change-function
 611           before-change-functions after-change-functions)
 612       (delete-region beg
 613                      (+ beg (if (> end beg) 1 -1))))
 614     (let ((buffer-undo-list buffer-undo-list))
 615       ;; Undo that deletion--but don't change the undo list!
 616       (let (before-change-function after-change-function
 617             before-change-functions after-change-functions)
 618         (primitive-undo 1 buffer-undo-list))
 619       ;; Now delete the rest of the specified region,
 620       ;; but don't record it.
 621       (setq buffer-undo-list t)
 622       (if (/= (length (car kill-ring)) (- (max end beg) (min end beg)))
 623           (error "Lossage in mouse-save-then-kill-delete-region"))
 624       (delete-region beg end))
 625     (let ((tail buffer-undo-list))
 626       ;; Search back in buffer-undo-list for the string
 627       ;; that came from deleting one character.
 628       (while (and tail (not (stringp (car (car tail)))))
 629         (setq tail (cdr tail)))
 630       ;; Replace it with an entry for the entire deleted text.
 631       (and tail
 632            (setcar tail (cons (car kill-ring) (min beg end))))))
 633   (undo-boundary))
 634
 635 (defun mouse-save-then-kill (click)
 636   "Save text to point in kill ring; the second time, kill the text.
 637 If the text between point and the mouse is the same as what's
 638 at the front of the kill ring, this deletes the text.
 639 Otherwise, it adds the text to the kill ring, like \\[kill-ring-save],
 640 which prepares for a second click to delete the text.
 641
 642 If you have selected words or lines, this command extends the
 643 selection through the word or line clicked on.  If you do this
 644 again in a different position, it extends the selection again.
 645 If you do this twice in the same position, the selection is killed."
 646   (interactive "e")
 647   (let ((before-scroll point-before-scroll))
 648     (mouse-minibuffer-check click)
 649     (let ((click-posn (posn-point (event-start click)))
 650           ;; Don't let a subsequent kill command append to this one:
 651           ;; prevent setting this-command to kill-region.
 652           (this-command this-command))
 653       (if (and (mark t) (> (mod mouse-selection-click-count 3) 0))
 654           (if (not (and (eq last-command 'mouse-save-then-kill)
 655                         (equal click-posn
 656                                (car (cdr-safe (cdr-safe mouse-save-then-kill-posn))))))
 657               ;; Find both ends of the object selected by this click.
 658               (let* ((range
 659                       (mouse-start-end click-posn click-posn
 660                                        mouse-selection-click-count)))
 661                 ;; Move whichever end is closer to the click.
 662                 ;; That's what xterm does, and it seems reasonable.
 663                 (if (< (abs (- click-posn (mark t)))
 664                        (abs (- click-posn (point))))
 665                     (set-mark (car range))
 666                   (goto-char (nth 1 range)))
 667                 ;; We have already put the old region in the kill ring.
 668                 ;; Replace it with the extended region.
 669                 ;; (It would be annoying to make a separate entry.)
 670                 (kill-new (buffer-substring (point) (mark t)) t)
 671                 (mouse-set-region-1)
 672                 ;; Arrange for a repeated mouse-3 to kill this region.
 673                 (setq mouse-save-then-kill-posn
 674                       (list (car kill-ring) (point) click-posn))
 675                 (mouse-show-mark))
 676             ;; If we click this button again without moving it,
 677             ;; that time kill.
 678             (mouse-save-then-kill-delete-region (point) (mark))
 679             (setq mouse-selection-click-count 0)
 680             (setq mouse-save-then-kill-posn nil))
 681         (if (and (eq last-command 'mouse-save-then-kill)
 682                  mouse-save-then-kill-posn
 683                  (eq (car mouse-save-then-kill-posn) (car kill-ring))
 684                  (equal (cdr mouse-save-then-kill-posn) (list (point) click-posn)))
 685             ;; If this is the second time we've called
 686             ;; mouse-save-then-kill, delete the text from the buffer.
 687             (progn
 688               (mouse-save-then-kill-delete-region (point) (mark))
 689               ;; After we kill, another click counts as "the first time".
 690               (setq mouse-save-then-kill-posn nil))
 691           (if (or (and (eq last-command 'mouse-save-then-kill)
 692                        mouse-save-then-kill-posn)
 693                   (and mark-active transient-mark-mode)
 694                   (and (memq last-command
 695                              '(mouse-drag-region mouse-set-region))
 696                        (or mark-even-if-inactive
 697                            (not transient-mark-mode))))
 698               ;; We have a selection or suitable region, so adjust it.
 699               (let* ((posn (event-start click))
 700                      (new (posn-point posn)))
 701                 (select-window (posn-window posn))
 702                 (if (numberp new)
 703                     (progn
 704                       ;; Move whichever end of the region is closer to the click.
 705                       ;; That is what xterm does, and it seems reasonable.
 706                       (if (< (abs (- new (point))) (abs (- new (mark t))))
 707                           (goto-char new)
 708                         (set-mark new))
 709                       (setq deactivate-mark nil)))
 710                 (kill-new (buffer-substring (point) (mark t)) t))
 711             ;; Set the mark where point is, then move where clicked.
 712             (mouse-set-mark-fast click)
 713             (if before-scroll
 714                 (goto-char before-scroll))
 715             (exchange-point-and-mark)
 716             (kill-ring-save (point) (mark t)))
 717           (mouse-show-mark)
 718           (mouse-set-region-1)
 719           (setq mouse-save-then-kill-posn
 720                 (list (car kill-ring) (point) click-posn)))))))
 721 \f
 722 (global-set-key [M-mouse-1] 'mouse-start-secondary)
 723 (global-set-key [M-drag-mouse-1] 'mouse-set-secondary)
 724 (global-set-key [M-down-mouse-1] 'mouse-drag-secondary)
 725 (global-set-key [M-mouse-3] 'mouse-secondary-save-then-kill)
 726 (global-set-key [M-mouse-2] 'mouse-yank-secondary)
 727
 728 ;; An overlay which records the current secondary selection
 729 ;; or else is deleted when there is no secondary selection.
 730 ;; May be nil.
 731 (defvar mouse-secondary-overlay nil)
 732
 733 (defvar mouse-secondary-click-count 0)
 734
 735 ;; A marker which records the specified first end for a secondary selection.
 736 ;; May be nil.
 737 (defvar mouse-secondary-start nil)
 738
 739 (defun mouse-start-secondary (click)
 740   "Set one end of the secondary selection to the position clicked on.
 741 Use \\[mouse-secondary-save-then-kill] to set the other end
 742 and complete the secondary selection."
 743   (interactive "e")
 744   (mouse-minibuffer-check click)
 745   (let ((posn (event-start click)))
 746     (save-excursion
 747       (set-buffer (window-buffer (posn-window posn)))
 748       ;; Cancel any preexisting secondary selection.
 749       (if mouse-secondary-overlay
 750           (delete-overlay mouse-secondary-overlay))
 751       (if (numberp (posn-point posn))
 752           (progn
 753             (or mouse-secondary-start
 754                 (setq mouse-secondary-start (make-marker)))
 755             (move-marker mouse-secondary-start (posn-point posn)))))))
 756
 757 (defun mouse-set-secondary (click)
 758   "Set the secondary selection to the text that the mouse is dragged over.
 759 This must be bound to a mouse drag event."
 760   (interactive "e")
 761   (mouse-minibuffer-check click)
 762   (let ((posn (event-start click))
 763         beg
 764         (end (event-end click)))
 765     (save-excursion
 766       (set-buffer (window-buffer (posn-window posn)))
 767       (if (numberp (posn-point posn))
 768           (setq beg (posn-point posn)))
 769       (if mouse-secondary-overlay
 770           (move-overlay mouse-secondary-overlay beg (posn-point end))
 771         (setq mouse-secondary-overlay (make-overlay beg (posn-point end))))
 772       (overlay-put mouse-secondary-overlay 'face 'secondary-selection))))
 773
 774 (defun mouse-drag-secondary (start-event)
 775   "Set the secondary selection to the text that the mouse is dragged over.
 776 Highlight the drag area as you move the mouse.
 777 This must be bound to a button-down mouse event."
 778   (interactive "e")
 779   (mouse-minibuffer-check start-event)
 780   (let* ((start-posn (event-start start-event))
 781          (start-point (posn-point start-posn))
 782          (start-window (posn-window start-posn))
 783          (start-frame (window-frame start-window))
 784          (bounds (window-edges start-window))
 785          (top (nth 1 bounds))
 786          (bottom (if (window-minibuffer-p start-window)
 787                      (nth 3 bounds)
 788                    ;; Don't count the mode line.
 789                    (1- (nth 3 bounds))))
 790          (click-count (1- (event-click-count start-event))))
 791     (save-excursion
 792       (set-buffer (window-buffer start-window))
 793       (setq mouse-secondary-click-count click-count)
 794       (or mouse-secondary-overlay
 795           (setq mouse-secondary-overlay
 796                 (make-overlay (point) (point))))
 797       (overlay-put mouse-secondary-overlay 'face 'secondary-selection)
 798       (if (> (mod click-count 3) 0)
 799           ;; Double or triple press: make an initial selection
 800           ;; of one word or line.
 801           (let ((range (mouse-start-end start-point start-point click-count)))
 802             (set-marker mouse-secondary-start nil)
 803             (move-overlay mouse-secondary-overlay 1 1
 804                           (window-buffer start-window))
 805             (move-overlay mouse-secondary-overlay (car range) (nth 1 range)
 806                           (window-buffer start-window)))
 807         ;; Single-press: cancel any preexisting secondary selection.
 808         (or mouse-secondary-start
 809             (setq mouse-secondary-start (make-marker)))
 810         (set-marker mouse-secondary-start start-point)
 811         (delete-overlay mouse-secondary-overlay))
 812       (let (event end end-point)
 813         (track-mouse
 814           (while (progn
 815                    (setq event (read-event))
 816                    (or (mouse-movement-p event)
 817                        (eq (car-safe event) 'switch-frame)))
 818
 819             (if (eq (car-safe event) 'switch-frame)
 820                 nil
 821               (setq end (event-end event)
 822                     end-point (posn-point end))
 823               (cond
 824                ;; Are we moving within the original window?
 825                ((and (eq (posn-window end) start-window)
 826                      (integer-or-marker-p end-point))
 827                 (let ((range (mouse-start-end start-point end-point
 828                                               click-count)))
 829                   (if (or (/= start-point end-point)
 830                           (null (marker-position mouse-secondary-start)))
 831                       (progn
 832                         (set-marker mouse-secondary-start nil)
 833                         (move-overlay mouse-secondary-overlay
 834                                       (car range) (nth 1 range))))))
 835                (t
 836                 (let ((mouse-row (cdr (cdr (mouse-position)))))
 837                   (cond
 838                    ((null mouse-row))
 839                    ((< mouse-row top)
 840                     (mouse-scroll-subr start-window (- mouse-row top)
 841                                        mouse-secondary-overlay start-point))
 842                    ((>= mouse-row bottom)
 843                     (mouse-scroll-subr start-window (1+ (- mouse-row bottom))
 844                                        mouse-secondary-overlay start-point)))))))))
 845
 846         (if (consp event)
 847 ;;;              (eq (get (event-basic-type event) 'event-kind) 'mouse-click)
 848 ;;;              (eq (posn-window (event-end event)) start-window)
 849 ;;;              (numberp (posn-point (event-end event)))
 850             (if (marker-position mouse-secondary-start)
 851                 (save-window-excursion
 852                   (delete-overlay mouse-secondary-overlay)
 853                   (x-set-selection 'SECONDARY nil)
 854                   (select-window start-window)
 855                   (save-excursion
 856                     (goto-char mouse-secondary-start)
 857                     (sit-for 1)))
 858               (x-set-selection
 859                'SECONDARY
 860                (buffer-substring (overlay-start mouse-secondary-overlay)
 861                                  (overlay-end mouse-secondary-overlay)))))))))
 862
 863 (defun mouse-yank-secondary (click)
 864   "Insert the secondary selection at the position clicked on.
 865 Move point to the end of the inserted text.
 866 If `mouse-yank-at-point' is non-nil, insert at point
 867 regardless of where you click."
 868   (interactive "e")
 869   ;; Give temporary modes such as isearch a chance to turn off.
 870   (run-hooks 'mouse-leave-buffer-hook)
 871   (or mouse-yank-at-point (mouse-set-point click))
 872   (insert (x-get-selection 'SECONDARY)))
 873
 874 (defun mouse-kill-secondary ()
 875   "Kill the text in the secondary selection.
 876 This is intended more as a keyboard command than as a mouse command
 877 but it can work as either one.
 878
 879 The current buffer (in case of keyboard use), or the buffer clicked on,
 880 must be the one that the secondary selection is in.  This requirement
 881 is to prevent accidents."
 882   (interactive)
 883   (let* ((keys (this-command-keys))
 884          (click (elt keys (1- (length keys)))))
 885     (or (eq (overlay-buffer mouse-secondary-overlay)
 886             (if (listp click)
 887                 (window-buffer (posn-window (event-start click)))
 888               (current-buffer)))
 889         (error "Select or click on the buffer where the secondary selection is")))
 890   (let (this-command)
 891     (save-excursion
 892       (set-buffer (overlay-buffer mouse-secondary-overlay))
 893       (kill-region (overlay-start mouse-secondary-overlay)
 894                    (overlay-end mouse-secondary-overlay))))
 895   (delete-overlay mouse-secondary-overlay)
 896 ;;;  (x-set-selection 'SECONDARY nil)
 897   (setq mouse-secondary-overlay nil))
 898
 899 (defun mouse-secondary-save-then-kill (click)
 900   "Save text to point in kill ring; the second time, kill the text.
 901 You must use this in a buffer where you have recently done \\[mouse-start-secondary].
 902 If the text between where you did \\[mouse-start-secondary] and where
 903 you use this command matches the text at the front of the kill ring,
 904 this command deletes the text.
 905 Otherwise, it adds the text to the kill ring, like \\[kill-ring-save],
 906 which prepares for a second click with this command to delete the text.
 907
 908 If you have already made a secondary selection in that buffer,
 909 this command extends or retracts the selection to where you click.
 910 If you do this again in a different position, it extends or retracts
 911 again.  If you do this twice in the same position, it kills the selection."
 912   (interactive "e")
 913   (mouse-minibuffer-check click)
 914   (let ((posn (event-start click))
 915         (click-posn (posn-point (event-start click)))
 916         ;; Don't let a subsequent kill command append to this one:
 917         ;; prevent setting this-command to kill-region.
 918         (this-command this-command))
 919     (or (eq (window-buffer (posn-window posn))
 920             (or (and mouse-secondary-overlay
 921                      (overlay-buffer mouse-secondary-overlay))
 922                 (if mouse-secondary-start
 923                     (marker-buffer mouse-secondary-start))))
 924         (error "Wrong buffer"))
 925     (save-excursion
 926       (set-buffer (window-buffer (posn-window posn)))
 927       (if (> (mod mouse-secondary-click-count 3) 0)
 928           (if (not (and (eq last-command 'mouse-secondary-save-then-kill)
 929                         (equal click-posn
 930                                (car (cdr-safe (cdr-safe mouse-save-then-kill-posn))))))
 931               ;; Find both ends of the object selected by this click.
 932               (let* ((range
 933                       (mouse-start-end click-posn click-posn
 934                                        mouse-secondary-click-count)))
 935                 ;; Move whichever end is closer to the click.
 936                 ;; That's what xterm does, and it seems reasonable.
 937                 (if (< (abs (- click-posn (overlay-start mouse-secondary-overlay)))
 938                        (abs (- click-posn (overlay-end mouse-secondary-overlay))))
 939                     (move-overlay mouse-secondary-overlay (car range)
 940                                   (overlay-end mouse-secondary-overlay))
 941                   (move-overlay mouse-secondary-overlay
 942                                 (overlay-start mouse-secondary-overlay)
 943                                 (nth 1 range)))
 944                 ;; We have already put the old region in the kill ring.
 945                 ;; Replace it with the extended region.
 946                 ;; (It would be annoying to make a separate entry.)
 947                 (kill-new (buffer-substring
 948                            (overlay-start mouse-secondary-overlay)
 949                            (overlay-end mouse-secondary-overlay)) t)
 950                 ;; Arrange for a repeated mouse-3 to kill this region.
 951                 (setq mouse-save-then-kill-posn
 952                       (list (car kill-ring) (point) click-posn)))
 953             ;; If we click this button again without moving it,
 954             ;; that time kill.
 955             (progn
 956               (mouse-save-then-kill-delete-region
 957                (overlay-start mouse-secondary-overlay)
 958                (overlay-end mouse-secondary-overlay))
 959               (setq mouse-save-then-kill-posn nil)
 960               (setq mouse-secondary-click-count 0)
 961               (delete-overlay mouse-secondary-overlay)))
 962         (if (and (eq last-command 'mouse-secondary-save-then-kill)
 963                  mouse-save-then-kill-posn
 964                  (eq (car mouse-save-then-kill-posn) (car kill-ring))
 965                  (equal (cdr mouse-save-then-kill-posn) (list (point) click-posn)))
 966             ;; If this is the second time we've called
 967             ;; mouse-secondary-save-then-kill, delete the text from the buffer.
 968             (progn
 969               (mouse-save-then-kill-delete-region
 970                (overlay-start mouse-secondary-overlay)
 971                (overlay-end mouse-secondary-overlay))
 972               (setq mouse-save-then-kill-posn nil)
 973               (delete-overlay mouse-secondary-overlay))
 974           (if (overlay-start mouse-secondary-overlay)
 975               ;; We have a selection, so adjust it.
 976               (progn
 977                 (if (numberp click-posn)
 978                     (progn
 979                       ;; Move whichever end of the region is closer to the click.
 980                       ;; That is what xterm does, and it seems reasonable.
 981                       (if (< (abs (- click-posn (overlay-start mouse-secondary-overlay)))
 982                              (abs (- click-posn (overlay-end mouse-secondary-overlay))))
 983                           (move-overlay mouse-secondary-overlay click-posn
 984                                         (overlay-end mouse-secondary-overlay))
 985                         (move-overlay mouse-secondary-overlay
 986                                       (overlay-start mouse-secondary-overlay)
 987                                       click-posn))
 988                       (setq deactivate-mark nil)))
 989                 (if (eq last-command 'mouse-secondary-save-then-kill)
 990                     ;; If the front of the kill ring comes from
 991                     ;; an immediately previous use of this command,
 992                     ;; replace it with the extended region.
 993                     ;; (It would be annoying to make a separate entry.)
 994                     (kill-new (buffer-substring
 995                                (overlay-start mouse-secondary-overlay)
 996                                (overlay-end mouse-secondary-overlay)) t)
 997                   (copy-region-as-kill (overlay-start mouse-secondary-overlay)
 998                                        (overlay-end mouse-secondary-overlay))))
 999             (if mouse-secondary-start
1000                 ;; All we have is one end of a selection,
1001                 ;; so put the other end here.
1002                 (let ((start (+ 0 mouse-secondary-start)))
1003                   (kill-ring-save start click-posn)
1004                   (if mouse-secondary-overlay
1005                       (move-overlay mouse-secondary-overlay start click-posn)
1006                     (setq mouse-secondary-overlay (make-overlay start click-posn)))
1007                   (overlay-put mouse-secondary-overlay 'face 'secondary-selection))))
1008           (setq mouse-save-then-kill-posn
1009                 (list (car kill-ring) (point) click-posn))))
1010       (if (overlay-buffer mouse-secondary-overlay)
1011           (x-set-selection 'SECONDARY
1012                            (buffer-substring
1013                             (overlay-start mouse-secondary-overlay)
1014                             (overlay-end mouse-secondary-overlay)))))))
1015 \f
1016 (defun mouse-buffer-menu (event)
1017   "Pop up a menu of buffers for selection with the mouse.
1018 This switches buffers in the window that you clicked on,
1019 and selects that window."
1020   (interactive "e")
1021   (mouse-minibuffer-check event)
1022   (let ((menu
1023          (list "Buffer Menu"
1024                (cons "Select Buffer"
1025                      (let ((tail (buffer-list))
1026                            (maxbuf 0)
1027                            head)
1028                        (while tail
1029                          (or (eq ?\ (aref (buffer-name (car tail)) 0))
1030                              (setq maxbuf
1031                                    (max maxbuf
1032                                         (length (buffer-name (car tail))))))
1033                          (setq tail (cdr tail)))
1034                        (setq tail (buffer-list))
1035                        (while tail
1036                          (let ((elt (car tail)))
1037                            (if (not (string-match "^ "
1038                                                   (buffer-name elt)))
1039                                (setq head
1040                                 (cons
1041                                  (cons
1042                                   (format
1043                                    (format "%%%ds  %%s%%s  %%s" maxbuf)
1044                                    (buffer-name elt)
1045                                    (if (buffer-modified-p elt) "*" " ")
1046                                    (save-excursion
1047                                      (set-buffer elt)
1048                                      (if buffer-read-only "%" " "))
1049                                    (or (buffer-file-name elt)
1050                                        (save-excursion
1051                                          (set-buffer elt)
1052                                          (if list-buffers-directory
1053                                              (expand-file-name
1054                                               list-buffers-directory)))
1055                                        ""))
1056                                   elt)
1057                                  head))))
1058                          (setq tail (cdr tail)))
1059                        (reverse head))))))
1060     (let ((buf (x-popup-menu event menu))
1061           (window (posn-window (event-start event))))
1062       (if buf
1063           (progn
1064             (or (framep window) (select-window window))
1065             (switch-to-buffer buf))))))
1066 \f
1067 ;;; These need to be rewritten for the new scroll bar implementation.
1068
1069 ;;;!! ;; Commands for the scroll bar.
1070 ;;;!!
1071 ;;;!! (defun mouse-scroll-down (click)
1072 ;;;!!   (interactive "@e")
1073 ;;;!!   (scroll-down (1+ (cdr (mouse-coords click)))))
1074 ;;;!!
1075 ;;;!! (defun mouse-scroll-up (click)
1076 ;;;!!   (interactive "@e")
1077 ;;;!!   (scroll-up (1+ (cdr (mouse-coords click)))))
1078 ;;;!!
1079 ;;;!! (defun mouse-scroll-down-full ()
1080 ;;;!!   (interactive "@")
1081 ;;;!!   (scroll-down nil))
1082 ;;;!!
1083 ;;;!! (defun mouse-scroll-up-full ()
1084 ;;;!!   (interactive "@")
1085 ;;;!!   (scroll-up nil))
1086 ;;;!!
1087 ;;;!! (defun mouse-scroll-move-cursor (click)
1088 ;;;!!   (interactive "@e")
1089 ;;;!!   (move-to-window-line (1+ (cdr (mouse-coords click)))))
1090 ;;;!!
1091 ;;;!! (defun mouse-scroll-absolute (event)
1092 ;;;!!   (interactive "@e")
1093 ;;;!!   (let* ((pos (car event))
1094 ;;;!!    (position (car pos))
1095 ;;;!!    (length (car (cdr pos))))
1096 ;;;!!     (if (<= length 0) (setq length 1))
1097 ;;;!!     (let* ((scale-factor (max 1 (/ length (/ 8000000 (buffer-size)))))
1098 ;;;!!      (newpos (* (/ (* (/ (buffer-size) scale-factor)
1099 ;;;!!                       position)
1100 ;;;!!                    length)
1101 ;;;!!                 scale-factor)))
1102 ;;;!!       (goto-char newpos)
1103 ;;;!!       (recenter '(4)))))
1104 ;;;!!
1105 ;;;!! (defun mouse-scroll-left (click)
1106 ;;;!!   (interactive "@e")
1107 ;;;!!   (scroll-left (1+ (car (mouse-coords click)))))
1108 ;;;!!
1109 ;;;!! (defun mouse-scroll-right (click)
1110 ;;;!!   (interactive "@e")
1111 ;;;!!   (scroll-right (1+ (car (mouse-coords click)))))
1112 ;;;!!
1113 ;;;!! (defun mouse-scroll-left-full ()
1114 ;;;!!   (interactive "@")
1115 ;;;!!   (scroll-left nil))
1116 ;;;!!
1117 ;;;!! (defun mouse-scroll-right-full ()
1118 ;;;!!   (interactive "@")
1119 ;;;!!   (scroll-right nil))
1120 ;;;!!
1121 ;;;!! (defun mouse-scroll-move-cursor-horizontally (click)
1122 ;;;!!   (interactive "@e")
1123 ;;;!!   (move-to-column (1+ (car (mouse-coords click)))))
1124 ;;;!!
1125 ;;;!! (defun mouse-scroll-absolute-horizontally (event)
1126 ;;;!!   (interactive "@e")
1127 ;;;!!   (let* ((pos (car event))
1128 ;;;!!    (position (car pos))
1129 ;;;!!    (length (car (cdr pos))))
1130 ;;;!!   (set-window-hscroll (selected-window) 33)))
1131 ;;;!!
1132 ;;;!! (global-set-key [scroll-bar mouse-1] 'mouse-scroll-up)
1133 ;;;!! (global-set-key [scroll-bar mouse-2] 'mouse-scroll-absolute)
1134 ;;;!! (global-set-key [scroll-bar mouse-3] 'mouse-scroll-down)
1135 ;;;!!
1136 ;;;!! (global-set-key [vertical-slider mouse-1] 'mouse-scroll-move-cursor)
1137 ;;;!! (global-set-key [vertical-slider mouse-2] 'mouse-scroll-move-cursor)
1138 ;;;!! (global-set-key [vertical-slider mouse-3] 'mouse-scroll-move-cursor)
1139 ;;;!!
1140 ;;;!! (global-set-key [thumbup mouse-1] 'mouse-scroll-up-full)
1141 ;;;!! (global-set-key [thumbup mouse-2] 'mouse-scroll-up-full)
1142 ;;;!! (global-set-key [thumbup mouse-3] 'mouse-scroll-up-full)
1143 ;;;!!
1144 ;;;!! (global-set-key [thumbdown mouse-1] 'mouse-scroll-down-full)
1145 ;;;!! (global-set-key [thumbdown mouse-2] 'mouse-scroll-down-full)
1146 ;;;!! (global-set-key [thumbdown mouse-3] 'mouse-scroll-down-full)
1147 ;;;!!
1148 ;;;!! (global-set-key [horizontal-scroll-bar mouse-1] 'mouse-scroll-left)
1149 ;;;!! (global-set-key [horizontal-scroll-bar mouse-2]
1150 ;;;!!           'mouse-scroll-absolute-horizontally)
1151 ;;;!! (global-set-key [horizontal-scroll-bar mouse-3] 'mouse-scroll-right)
1152 ;;;!!
1153 ;;;!! (global-set-key [horizontal-slider mouse-1]
1154 ;;;!!           'mouse-scroll-move-cursor-horizontally)
1155 ;;;!! (global-set-key [horizontal-slider mouse-2]
1156 ;;;!!           'mouse-scroll-move-cursor-horizontally)
1157 ;;;!! (global-set-key [horizontal-slider mouse-3]
1158 ;;;!!           'mouse-scroll-move-cursor-horizontally)
1159 ;;;!!
1160 ;;;!! (global-set-key [thumbleft mouse-1] 'mouse-scroll-left-full)
1161 ;;;!! (global-set-key [thumbleft mouse-2] 'mouse-scroll-left-full)
1162 ;;;!! (global-set-key [thumbleft mouse-3] 'mouse-scroll-left-full)
1163 ;;;!!
1164 ;;;!! (global-set-key [thumbright mouse-1] 'mouse-scroll-right-full)
1165 ;;;!! (global-set-key [thumbright mouse-2] 'mouse-scroll-right-full)
1166 ;;;!! (global-set-key [thumbright mouse-3] 'mouse-scroll-right-full)
1167 ;;;!!
1168 ;;;!! (global-set-key [horizontal-scroll-bar S-mouse-2]
1169 ;;;!!           'mouse-split-window-horizontally)
1170 ;;;!! (global-set-key [mode-line S-mouse-2]
1171 ;;;!!           'mouse-split-window-horizontally)
1172 ;;;!! (global-set-key [vertical-scroll-bar S-mouse-2]
1173 ;;;!!           'mouse-split-window)
1174 \f
1175 ;;;!! ;;;;
1176 ;;;!! ;;;; Here are experimental things being tested.  Mouse events
1177 ;;;!! ;;;; are of the form:
1178 ;;;!! ;;;;      ((x y) window screen-part key-sequence timestamp)
1179 ;;;!! ;;
1180 ;;;!! ;;;;
1181 ;;;!! ;;;; Dynamically track mouse coordinates
1182 ;;;!! ;;;;
1183 ;;;!! ;;
1184 ;;;!! ;;(defun track-mouse (event)
1185 ;;;!! ;;  "Track the coordinates, absolute and relative, of the mouse."
1186 ;;;!! ;;  (interactive "@e")
1187 ;;;!! ;;  (while mouse-grabbed
1188 ;;;!! ;;    (let* ((pos (read-mouse-position (selected-screen)))
1189 ;;;!! ;;           (abs-x (car pos))
1190 ;;;!! ;;           (abs-y (cdr pos))
1191 ;;;!! ;;           (relative-coordinate (coordinates-in-window-p
1192 ;;;!! ;;                                 (list (car pos) (cdr pos))
1193 ;;;!! ;;                                 (selected-window))))
1194 ;;;!! ;;      (if (consp relative-coordinate)
1195 ;;;!! ;;          (message "mouse: [%d %d], (%d %d)" abs-x abs-y
1196 ;;;!! ;;                   (car relative-coordinate)
1197 ;;;!! ;;                   (car (cdr relative-coordinate)))
1198 ;;;!! ;;        (message "mouse: [%d %d]" abs-x abs-y)))))
1199 ;;;!!
1200 ;;;!! ;;
1201 ;;;!! ;; Dynamically put a box around the line indicated by point
1202 ;;;!! ;;
1203 ;;;!! ;;
1204 ;;;!! ;;(require 'backquote)
1205 ;;;!! ;;
1206 ;;;!! ;;(defun mouse-select-buffer-line (event)
1207 ;;;!! ;;  (interactive "@e")
1208 ;;;!! ;;  (let ((relative-coordinate
1209 ;;;!! ;;         (coordinates-in-window-p (car event) (selected-window)))
1210 ;;;!! ;;        (abs-y (car (cdr (car event)))))
1211 ;;;!! ;;    (if (consp relative-coordinate)
1212 ;;;!! ;;        (progn
1213 ;;;!! ;;          (save-excursion
1214 ;;;!! ;;            (move-to-window-line (car (cdr relative-coordinate)))
1215 ;;;!! ;;            (x-draw-rectangle
1216 ;;;!! ;;             (selected-screen)
1217 ;;;!! ;;             abs-y 0
1218 ;;;!! ;;             (save-excursion
1219 ;;;!! ;;                 (move-to-window-line (car (cdr relative-coordinate)))
1220 ;;;!! ;;                 (end-of-line)
1221 ;;;!! ;;                 (push-mark nil t)
1222 ;;;!! ;;                 (beginning-of-line)
1223 ;;;!! ;;                 (- (region-end) (region-beginning))) 1))
1224 ;;;!! ;;          (sit-for 1)
1225 ;;;!! ;;          (x-erase-rectangle (selected-screen))))))
1226 ;;;!! ;;
1227 ;;;!! ;;(defvar last-line-drawn nil)
1228 ;;;!! ;;(defvar begin-delim "[^ \t]")
1229 ;;;!! ;;(defvar end-delim   "[^ \t]")
1230 ;;;!! ;;
1231 ;;;!! ;;(defun mouse-boxing (event)
1232 ;;;!! ;;  (interactive "@e")
1233 ;;;!! ;;  (save-excursion
1234 ;;;!! ;;    (let ((screen (selected-screen)))
1235 ;;;!! ;;      (while (= (x-mouse-events) 0)
1236 ;;;!! ;;        (let* ((pos (read-mouse-position screen))
1237 ;;;!! ;;               (abs-x (car pos))
1238 ;;;!! ;;               (abs-y (cdr pos))
1239 ;;;!! ;;               (relative-coordinate
1240 ;;;!! ;;                (coordinates-in-window-p (` ((, abs-x) (, abs-y)))
1241 ;;;!! ;;                                         (selected-window)))
1242 ;;;!! ;;               (begin-reg nil)
1243 ;;;!! ;;               (end-reg nil)
1244 ;;;!! ;;               (end-column nil)
1245 ;;;!! ;;               (begin-column nil))
1246 ;;;!! ;;          (if (and (consp relative-coordinate)
1247 ;;;!! ;;                   (or (not last-line-drawn)
1248 ;;;!! ;;                       (not (= last-line-drawn abs-y))))
1249 ;;;!! ;;              (progn
1250 ;;;!! ;;                (move-to-window-line (car (cdr relative-coordinate)))
1251 ;;;!! ;;                (if (= (following-char) 10)
1252 ;;;!! ;;                    ()
1253 ;;;!! ;;                  (progn
1254 ;;;!! ;;                    (setq begin-reg (1- (re-search-forward end-delim)))
1255 ;;;!! ;;                    (setq begin-column (1- (current-column)))
1256 ;;;!! ;;                    (end-of-line)
1257 ;;;!! ;;                    (setq end-reg (1+ (re-search-backward begin-delim)))
1258 ;;;!! ;;                    (setq end-column (1+ (current-column)))
1259 ;;;!! ;;                    (message "%s" (buffer-substring begin-reg end-reg))
1260 ;;;!! ;;                    (x-draw-rectangle screen
1261 ;;;!! ;;                                      (setq last-line-drawn abs-y)
1262 ;;;!! ;;                                      begin-column
1263 ;;;!! ;;                                      (- end-column begin-column) 1))))))))))
1264 ;;;!! ;;
1265 ;;;!! ;;(defun mouse-erase-box ()
1266 ;;;!! ;;  (interactive)
1267 ;;;!! ;;  (if last-line-drawn
1268 ;;;!! ;;      (progn
1269 ;;;!! ;;        (x-erase-rectangle (selected-screen))
1270 ;;;!! ;;        (setq last-line-drawn nil))))
1271 ;;;!!
1272 ;;;!! ;;; (defun test-x-rectangle ()
1273 ;;;!! ;;;   (use-local-mouse-map (setq rectangle-test-map (make-sparse-keymap)))
1274 ;;;!! ;;;   (define-key rectangle-test-map mouse-motion-button-left 'mouse-boxing)
1275 ;;;!! ;;;   (define-key rectangle-test-map mouse-button-left-up 'mouse-erase-box))
1276 ;;;!!
1277 ;;;!! ;;
1278 ;;;!! ;; Here is how to do double clicking in lisp.  About to change.
1279 ;;;!! ;;
1280 ;;;!!
1281 ;;;!! (defvar double-start nil)
1282 ;;;!! (defconst double-click-interval 300
1283 ;;;!!   "Max ticks between clicks")
1284 ;;;!!
1285 ;;;!! (defun double-down (event)
1286 ;;;!!   (interactive "@e")
1287 ;;;!!   (if double-start
1288 ;;;!!       (let ((interval (- (nth 4 event) double-start)))
1289 ;;;!!   (if (< interval double-click-interval)
1290 ;;;!!       (progn
1291 ;;;!!         (backward-up-list 1)
1292 ;;;!!         ;;      (message "Interval %d" interval)
1293 ;;;!!         (sleep-for 1)))
1294 ;;;!!   (setq double-start nil))
1295 ;;;!!     (setq double-start (nth 4 event))))
1296 ;;;!!
1297 ;;;!! (defun double-up (event)
1298 ;;;!!   (interactive "@e")
1299 ;;;!!   (and double-start
1300 ;;;!!        (> (- (nth 4 event ) double-start) double-click-interval)
1301 ;;;!!        (setq double-start nil)))
1302 ;;;!!
1303 ;;;!! ;;; (defun x-test-doubleclick ()
1304 ;;;!! ;;;   (use-local-mouse-map (setq doubleclick-test-map (make-sparse-keymap)))
1305 ;;;!! ;;;   (define-key doubleclick-test-map mouse-button-left 'double-down)
1306 ;;;!! ;;;   (define-key doubleclick-test-map mouse-button-left-up 'double-up))
1307 ;;;!!
1308 ;;;!! ;;
1309 ;;;!! ;; This scrolls while button is depressed.  Use preferable in scroll bar.
1310 ;;;!! ;;
1311 ;;;!!
1312 ;;;!! (defvar scrolled-lines 0)
1313 ;;;!! (defconst scroll-speed 1)
1314 ;;;!!
1315 ;;;!! (defun incr-scroll-down (event)
1316 ;;;!!   (interactive "@e")
1317 ;;;!!   (setq scrolled-lines 0)
1318 ;;;!!   (incremental-scroll scroll-speed))
1319 ;;;!!
1320 ;;;!! (defun incr-scroll-up (event)
1321 ;;;!!   (interactive "@e")
1322 ;;;!!   (setq scrolled-lines 0)
1323 ;;;!!   (incremental-scroll (- scroll-speed)))
1324 ;;;!!
1325 ;;;!! (defun incremental-scroll (n)
1326 ;;;!!   (while (= (x-mouse-events) 0)
1327 ;;;!!     (setq scrolled-lines (1+ (* scroll-speed scrolled-lines)))
1328 ;;;!!     (scroll-down n)
1329 ;;;!!     (sit-for 300 t)))
1330 ;;;!!
1331 ;;;!! (defun incr-scroll-stop (event)
1332 ;;;!!   (interactive "@e")
1333 ;;;!!   (message "Scrolled %d lines" scrolled-lines)
1334 ;;;!!   (setq scrolled-lines 0)
1335 ;;;!!   (sleep-for 1))
1336 ;;;!!
1337 ;;;!! ;;; (defun x-testing-scroll ()
1338 ;;;!! ;;;   (let ((scrolling-map (function mouse-vertical-scroll-bar-prefix)))
1339 ;;;!! ;;;     (define-key scrolling-map mouse-button-left 'incr-scroll-down)
1340 ;;;!! ;;;     (define-key scrolling-map mouse-button-right 'incr-scroll-up)
1341 ;;;!! ;;;     (define-key scrolling-map mouse-button-left-up 'incr-scroll-stop)
1342 ;;;!! ;;;     (define-key scrolling-map mouse-button-right-up 'incr-scroll-stop)))
1343 ;;;!!
1344 ;;;!! ;;
1345 ;;;!! ;; Some playthings suitable for picture mode?  They need work.
1346 ;;;!! ;;
1347 ;;;!!
1348 ;;;!! (defun mouse-kill-rectangle (event)
1349 ;;;!!   "Kill the rectangle between point and the mouse cursor."
1350 ;;;!!   (interactive "@e")
1351 ;;;!!   (let ((point-save (point)))
1352 ;;;!!     (save-excursion
1353 ;;;!!       (mouse-set-point event)
1354 ;;;!!       (push-mark nil t)
1355 ;;;!!       (if (> point-save (point))
1356 ;;;!!     (kill-rectangle (point) point-save)
1357 ;;;!!   (kill-rectangle point-save (point))))))
1358 ;;;!!
1359 ;;;!! (defun mouse-open-rectangle (event)
1360 ;;;!!   "Kill the rectangle between point and the mouse cursor."
1361 ;;;!!   (interactive "@e")
1362 ;;;!!   (let ((point-save (point)))
1363 ;;;!!     (save-excursion
1364 ;;;!!       (mouse-set-point event)
1365 ;;;!!       (push-mark nil t)
1366 ;;;!!       (if (> point-save (point))
1367 ;;;!!     (open-rectangle (point) point-save)
1368 ;;;!!   (open-rectangle point-save (point))))))
1369 ;;;!!
1370 ;;;!! ;; Must be a better way to do this.
1371 ;;;!!
1372 ;;;!! (defun mouse-multiple-insert (n char)
1373 ;;;!!   (while (> n 0)
1374 ;;;!!     (insert char)
1375 ;;;!!     (setq n (1- n))))
1376 ;;;!!
1377 ;;;!! ;; What this could do is not finalize until button was released.
1378 ;;;!!
1379 ;;;!! (defun mouse-move-text (event)
1380 ;;;!!   "Move text from point to cursor position, inserting spaces."
1381 ;;;!!   (interactive "@e")
1382 ;;;!!   (let* ((relative-coordinate
1383 ;;;!!     (coordinates-in-window-p (car event) (selected-window))))
1384 ;;;!!     (if (consp relative-coordinate)
1385 ;;;!!   (cond ((> (current-column) (car relative-coordinate))
1386 ;;;!!          (delete-char
1387 ;;;!!           (- (car relative-coordinate) (current-column))))
1388 ;;;!!         ((< (current-column) (car relative-coordinate))
1389 ;;;!!          (mouse-multiple-insert
1390 ;;;!!           (- (car relative-coordinate) (current-column)) " "))
1391 ;;;!!         ((= (current-column) (car relative-coordinate)) (ding))))))
1392 \f
1393 ;; Choose a completion with the mouse.
1394
1395 (defun mouse-choose-completion (event)
1396   "Click on an alternative in the `*Completions*' buffer to choose it."
1397   (interactive "e")
1398   ;; Give temporary modes such as isearch a chance to turn off.
1399   (run-hooks 'mouse-leave-buffer-hook)
1400   (let ((buffer (window-buffer))
1401         choice
1402         base-size)
1403     (save-excursion
1404       (set-buffer (window-buffer (posn-window (event-start event))))
1405       (if completion-reference-buffer
1406           (setq buffer completion-reference-buffer))
1407       (setq base-size completion-base-size)
1408       (save-excursion
1409         (goto-char (posn-point (event-start event)))
1410         (let (beg end)
1411           (if (and (not (eobp)) (get-text-property (point) 'mouse-face))
1412               (setq end (point) beg (1+ (point))))
1413           (if (null beg)
1414               (error "No completion here"))
1415           (setq beg (previous-single-property-change beg 'mouse-face))
1416           (setq end (or (next-single-property-change end 'mouse-face)
1417                         (point-max)))
1418           (setq choice (buffer-substring beg end)))))
1419     (let ((owindow (selected-window)))
1420       (select-window (posn-window (event-start event)))
1421       (if (and (one-window-p t 'selected-frame)
1422                (window-dedicated-p (selected-window)))
1423           ;; This is a special buffer's frame
1424           (iconify-frame (selected-frame))
1425         (or (window-dedicated-p (selected-window))
1426             (bury-buffer)))
1427       (select-window owindow))
1428     (choose-completion-string choice buffer base-size)))
1429 \f
1430 ;; Font selection.
1431
1432 (defun font-menu-add-default ()
1433   (let* ((default (cdr (assq 'font (frame-parameters (selected-frame)))))
1434          (font-alist x-fixed-font-alist)
1435          (elt (or (assoc "Misc" font-alist) (nth 1 font-alist))))
1436     (if (assoc "Default" elt)
1437         (delete (assoc "Default" elt) elt))
1438     (setcdr elt
1439             (cons (list "Default"
1440                         (cdr (assq 'font (frame-parameters (selected-frame)))))
1441                   (cdr elt)))))
1442
1443 (defvar x-fixed-font-alist
1444   '("Font menu"
1445     ("Misc"
1446      ;; For these, we specify the pixel height and width.
1447      ("fixed" "fixed")
1448      ("6x10" "-misc-fixed-medium-r-normal--10-*-*-*-c-60-iso8859-1" "6x10")
1449      ("6x12"
1450       "-misc-fixed-medium-r-semicondensed--12-*-*-*-c-60-iso8859-1" "6x12")
1451      ("6x13"
1452       "-misc-fixed-medium-r-semicondensed--13-*-*-*-c-60-iso8859-1" "6x13")
1453      ("7x13" "-misc-fixed-medium-r-normal--13-*-*-*-c-70-iso8859-1" "7x13")
1454      ("7x14" "-misc-fixed-medium-r-normal--14-*-*-*-c-70-iso8859-1" "7x14")
1455      ("8x13" "-misc-fixed-medium-r-normal--13-*-*-*-c-80-iso8859-1" "8x13")
1456      ("9x15" "-misc-fixed-medium-r-normal--15-*-*-*-c-90-iso8859-1" "9x15")
1457      ("10x20" "-misc-fixed-medium-r-normal--20-*-*-*-c-100-iso8859-1" "10x20")
1458      ("11x18" "-misc-fixed-medium-r-normal--18-*-*-*-c-110-iso8859-1" "11x18")
1459      ("12x24" "-misc-fixed-medium-r-normal--24-*-*-*-c-120-iso8859-1" "12x24")
1460      ("")
1461      ("clean 5x8"
1462       "-schumacher-clean-medium-r-normal--8-*-*-*-c-50-iso8859-1")
1463      ("clean 6x8"
1464       "-schumacher-clean-medium-r-normal--8-*-*-*-c-60-iso8859-1")
1465      ("clean 8x8"
1466       "-schumacher-clean-medium-r-normal--8-*-*-*-c-80-iso8859-1")
1467      ("clean 8x10"
1468       "-schumacher-clean-medium-r-normal--10-*-*-*-c-80-iso8859-1")
1469      ("clean 8x14"
1470       "-schumacher-clean-medium-r-normal--14-*-*-*-c-80-iso8859-1")
1471      ("clean 8x16"
1472       "-schumacher-clean-medium-r-normal--16-*-*-*-c-80-iso8859-1")
1473      ("")
1474      ("sony 8x16" "-sony-fixed-medium-r-normal--16-*-*-*-c-80-iso8859-1"))
1475 ;;; We don't seem to have these; who knows what they are.
1476 ;;;    ("fg-18" "fg-18")
1477 ;;;    ("fg-25" "fg-25")
1478 ;;;    ("lucidasanstypewriter-12" "lucidasanstypewriter-12")
1479 ;;;    ("lucidasanstypewriter-bold-14" "lucidasanstypewriter-bold-14")
1480 ;;;    ("lucidasanstypewriter-bold-24" "lucidasanstypewriter-bold-24")
1481 ;;;    ("lucidatypewriter-bold-r-24" "-b&h-lucidatypewriter-bold-r-normal-sans-24-240-75-75-m-140-iso8859-1")
1482 ;;;    ("fixed-medium-20" "-misc-fixed-medium-*-*-*-20-*-*-*-*-*-*-*")
1483     ("Courier"
1484      ;; For these, we specify the point height.
1485      ("8" "-adobe-courier-medium-r-normal--*-80-*-*-m-*-iso8859-1")
1486      ("10" "-adobe-courier-medium-r-normal--*-100-*-*-m-*-iso8859-1")
1487      ("12" "-adobe-courier-medium-r-normal--*-120-*-*-m-*-iso8859-1")
1488      ("14" "-adobe-courier-medium-r-normal--*-140-*-*-m-*-iso8859-1")
1489      ("18" "-adobe-courier-medium-r-normal--*-180-*-*-m-*-iso8859-1")
1490      ("24" "-adobe-courier-medium-r-normal--*-240-*-*-m-*-iso8859-1")
1491      ("8 bold" "-adobe-courier-bold-r-normal--*-80-*-*-m-*-iso8859-1")
1492      ("10 bold" "-adobe-courier-bold-r-normal--*-100-*-*-m-*-iso8859-1")
1493      ("12 bold" "-adobe-courier-bold-r-normal--*-120-*-*-m-*-iso8859-1")
1494      ("14 bold" "-adobe-courier-bold-r-normal--*-140-*-*-m-*-iso8859-1")
1495      ("18 bold" "-adobe-courier-bold-r-normal--*-180-*-*-m-*-iso8859-1")
1496      ("24 bold" "-adobe-courier-bold-r-normal--*-240-*-*-m-*-iso8859-1")
1497      ("8 slant" "-adobe-courier-medium-o-normal--*-80-*-*-m-*-iso8859-1")
1498      ("10 slant" "-adobe-courier-medium-o-normal--*-100-*-*-m-*-iso8859-1")
1499      ("12 slant" "-adobe-courier-medium-o-normal--*-120-*-*-m-*-iso8859-1")
1500      ("14 slant" "-adobe-courier-medium-o-normal--*-140-*-*-m-*-iso8859-1")
1501      ("18 slant" "-adobe-courier-medium-o-normal--*-180-*-*-m-*-iso8859-1")
1502      ("24 slant" "-adobe-courier-medium-o-normal--*-240-*-*-m-*-iso8859-1")
1503      ("8 bold slant" "-adobe-courier-bold-o-normal--*-80-*-*-m-*-iso8859-1")
1504      ("10 bold slant" "-adobe-courier-bold-o-normal--*-100-*-*-m-*-iso8859-1")
1505      ("12 bold slant" "-adobe-courier-bold-o-normal--*-120-*-*-m-*-iso8859-1")
1506      ("14 bold slant" "-adobe-courier-bold-o-normal--*-140-*-*-m-*-iso8859-1")
1507      ("18 bold slant" "-adobe-courier-bold-o-normal--*-180-*-*-m-*-iso8859-1")
1508      ("24 bold slant" "-adobe-courier-bold-o-normal--*-240-*-*-m-*-iso8859-1"))
1509     )
1510   "X fonts suitable for use in Emacs.")
1511
1512 (defun mouse-set-font (&rest fonts)
1513   "Select an emacs font from a list of known good fonts"
1514   (interactive
1515    (x-popup-menu last-nonmenu-event x-fixed-font-alist))
1516   (if fonts
1517       (let (font)
1518         (while fonts
1519           (condition-case nil
1520               (progn
1521                 (set-default-font (car fonts))
1522                 (setq font (car fonts))
1523                 (setq fonts nil))
1524             (error
1525              (setq fonts (cdr fonts)))))
1526         (if (null font)
1527             (error "Font not found")))))
1528 \f
1529 ;;; Bindings for mouse commands.
1530
1531 (define-key global-map [down-mouse-1] 'mouse-drag-region)
1532 (global-set-key [mouse-1]       'mouse-set-point)
1533 (global-set-key [drag-mouse-1]  'mouse-set-region)
1534
1535 ;; These are tested for in mouse-drag-region.
1536 (global-set-key [double-mouse-1] 'mouse-set-point)
1537 (global-set-key [triple-mouse-1] 'mouse-set-point)
1538
1539 (global-set-key [mouse-2]       'mouse-yank-at-click)
1540 (global-set-key [mouse-3]       'mouse-save-then-kill)
1541
1542 ;; By binding these to down-going events, we let the user use the up-going
1543 ;; event to make the selection, saving a click.
1544 (global-set-key [C-down-mouse-1] 'mouse-set-font)
1545 ;; C-down-mouse-2 is bound in facemenu.el.
1546 (global-set-key [C-down-mouse-3] 'mouse-major-mode-menu)
1547
1548
1549 ;; Replaced with dragging mouse-1
1550 ;; (global-set-key [S-mouse-1]  'mouse-set-mark)
1551
1552 (global-set-key [mode-line mouse-1] 'mouse-select-window)
1553 (global-set-key [mode-line drag-mouse-1] 'mouse-select-window)
1554 (global-set-key [mode-line down-mouse-1] 'mouse-drag-mode-line)
1555 (global-set-key [mode-line mouse-2] 'mouse-delete-other-windows)
1556 (global-set-key [mode-line mouse-3] 'mouse-delete-window)
1557 (global-set-key [mode-line C-mouse-2] 'mouse-split-window-horizontally)
1558 (global-set-key [vertical-scroll-bar C-mouse-2] 'mouse-split-window-vertically)
1559 (global-set-key [vertical-line C-mouse-2] 'mouse-split-window-vertically)
1560
1561 (provide 'mouse)
1562
1563 ;;; mouse.el ends here