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     ;; On X, we highlight while dragging, thus once again no need to bounce.
 319     (or transient-mark-mode
 320         (eq (framep (selected-frame)) 'x)
 321         (sit-for 1))
 322     (push-mark)
 323     (set-mark (point))
 324     (if (numberp (posn-point end))
 325         (goto-char (posn-point end)))
 326     ;; Don't set this-command to kill-region, so that a following
 327     ;; C-w will not double the text in the kill ring.
 328     ;; Ignore last-command so we don't append to a preceding kill.
 329     (let (this-command last-command)
 330       (copy-region-as-kill (mark) (point)))
 331     (mouse-set-region-1)))
 332
 333 (defun mouse-set-region-1 ()
 334   (setq mouse-last-region-beg (region-beginning))
 335   (setq mouse-last-region-end (region-end))
 336   (setq mouse-last-region-tick (buffer-modified-tick)))
 337
 338 (defvar mouse-scroll-delay 0.25
 339   "*The pause between scroll steps caused by mouse drags, in seconds.
 340 If you drag the mouse beyond the edge of a window, Emacs scrolls the
 341 window to bring the text beyond that edge into view, with a delay of
 342 this many seconds between scroll steps.  Scrolling stops when you move
 343 the mouse back into the window, or release the button.
 344 This variable's value may be non-integral.
 345 Setting this to zero causes Emacs to scroll as fast as it can.")
 346
 347 (defun mouse-scroll-subr (window jump &optional overlay start)
 348   "Scroll the window WINDOW, JUMP lines at a time, until new input arrives.
 349 If OVERLAY is an overlay, let it stretch from START to the far edge of
 350 the newly visible text.
 351 Upon exit, point is at the far edge of the newly visible text."
 352   (let ((opoint (point)))
 353     (while (progn
 354              (goto-char (window-start window))
 355              (if (not (zerop (vertical-motion jump window)))
 356                  (progn
 357                    (set-window-start window (point))
 358                    (if (natnump jump)
 359                        (progn
 360                          (goto-char (window-end window))
 361                          ;; window-end doesn't reflect the window's new
 362                          ;; start position until the next redisplay.  Hurrah.
 363                          (vertical-motion (1- jump) window))
 364                      (goto-char (window-start window)))
 365                    (if overlay
 366                        (move-overlay overlay start (point)))
 367                    ;; Now that we have scrolled WINDOW properly,
 368                    ;; put point back where it was for the redisplay
 369                    ;; so that we don't mess up the selected window.
 370                    (or (eq window (selected-window))
 371                        (goto-char opoint))
 372                    (sit-for mouse-scroll-delay)))))
 373     (or (eq window (selected-window))
 374         (goto-char opoint))))
 375
 376 ;; Create an overlay and immediately delete it, to get "overlay in no buffer".
 377 (defvar mouse-drag-overlay (make-overlay 1 1))
 378 (delete-overlay mouse-drag-overlay)
 379 (overlay-put mouse-drag-overlay 'face 'region)
 380
 381 (defvar mouse-selection-click-count 0)
 382
 383 (defun mouse-drag-region (start-event)
 384   "Set the region to the text that the mouse is dragged over.
 385 Highlight the drag area as you move the mouse.
 386 This must be bound to a button-down mouse event.
 387 In Transient Mark mode, the highlighting remains once you
 388 release the mouse button.  Otherwise, it does not."
 389   (interactive "e")
 390   (mouse-minibuffer-check start-event)
 391   (let* ((start-posn (event-start start-event))
 392          (start-point (posn-point start-posn))
 393          (start-window (posn-window start-posn))
 394          (start-frame (window-frame start-window))
 395          (bounds (window-edges start-window))
 396          (top (nth 1 bounds))
 397          (bottom (if (window-minibuffer-p start-window)
 398                      (nth 3 bounds)
 399                    ;; Don't count the mode line.
 400                    (1- (nth 3 bounds))))
 401          (click-count (1- (event-click-count start-event))))
 402     (setq mouse-selection-click-count click-count)
 403     (mouse-set-point start-event)
 404     (let ((range (mouse-start-end start-point start-point click-count)))
 405       (move-overlay mouse-drag-overlay (car range) (nth 1 range)
 406                     (window-buffer start-window)))
 407     (deactivate-mark)
 408     (let (event end end-point)
 409       (track-mouse
 410         (while (progn
 411                  (setq event (read-event))
 412                  (or (mouse-movement-p event)
 413                      (eq (car-safe event) 'switch-frame)))
 414           (if (eq (car-safe event) 'switch-frame)
 415               nil
 416             (setq end (event-end event)
 417                   end-point (posn-point end))
 418
 419             (cond
 420              ;; Are we moving within the original window?
 421              ((and (eq (posn-window end) start-window)
 422                    (integer-or-marker-p end-point))
 423               (goto-char end-point)
 424               (let ((range (mouse-start-end start-point (point) click-count)))
 425                 (move-overlay mouse-drag-overlay (car range) (nth 1 range))))
 426
 427              (t
 428               (let ((mouse-row (cdr (cdr (mouse-position)))))
 429                 (cond
 430                  ((null mouse-row))
 431                  ((< mouse-row top)
 432                   (mouse-scroll-subr start-window (- mouse-row top)
 433                                      mouse-drag-overlay start-point))
 434                  ((>= mouse-row bottom)
 435                   (mouse-scroll-subr start-window (1+ (- mouse-row bottom))
 436                                      mouse-drag-overlay start-point)))))))))
 437       (if (consp event)
 438           (let ((fun (key-binding (vector (car event)))))
 439             ;; Run the binding of the terminating up-event, if possible.
 440             ;; In the case of a multiple click, it gives the wrong results,
 441             ;; because it would fail to set up a region.
 442             (if (and (= (mod mouse-selection-click-count 3) 0) (fboundp fun))
 443                 (progn
 444                   (setq this-command fun)
 445                   ;; Delete the overlay before calling the function,
 446                   ;; because delete-overlay increases buffer-modified-tick.
 447                   (delete-overlay mouse-drag-overlay)
 448                   (funcall fun event))
 449               (if (not (= (overlay-start mouse-drag-overlay)
 450                           (overlay-end mouse-drag-overlay)))
 451                   (let (last-command this-command)
 452                     (push-mark (overlay-start mouse-drag-overlay) t t)
 453                     (goto-char (overlay-end mouse-drag-overlay))
 454                     (delete-overlay mouse-drag-overlay)
 455                     (copy-region-as-kill (point) (mark t))
 456                     (mouse-set-region-1))
 457                 (goto-char (overlay-end mouse-drag-overlay))
 458                 (setq this-command 'mouse-set-point)
 459                 (delete-overlay mouse-drag-overlay))))
 460         (delete-overlay mouse-drag-overlay)))))
 461 \f
 462 ;; Commands to handle xterm-style multiple clicks.
 463
 464 (defun mouse-skip-word (dir)
 465   "Skip over word, over whitespace, or over identical punctuation.
 466 If DIR is positive skip forward; if negative, skip backward."
 467   (let* ((char (following-char))
 468          (syntax (char-to-string (char-syntax char))))
 469     (if (or (string= syntax "w") (string= syntax " "))
 470         (if (< dir 0)
 471             (skip-syntax-backward syntax)
 472           (skip-syntax-forward syntax))
 473       (if (< dir 0)
 474           (while (and (not (bobp)) (= (preceding-char) char))
 475             (forward-char -1))
 476         (while (and (not (eobp)) (= (following-char) char))
 477           (forward-char 1))))))
 478
 479 ;; Return a list of region bounds based on START and END according to MODE.
 480 ;; If MODE is 0 then set point to (min START END), mark to (max START END).
 481 ;; If MODE is 1 then set point to start of word at (min START END),
 482 ;; mark to end of word at (max START END).
 483 ;; If MODE is 2 then do the same for lines.
 484 (defun mouse-start-end (start end mode)
 485   (if (> start end)
 486       (let ((temp start))
 487         (setq start end
 488               end temp)))
 489   (setq mode (mod mode 3))
 490   (cond ((= mode 0)
 491          (list start end))
 492         ((and (= mode 1)
 493               (= start end)
 494               (char-after start)
 495               (= (char-syntax (char-after start)) ?\())
 496          (list start
 497                (save-excursion
 498                  (goto-char start)
 499                  (forward-sexp 1)
 500                  (point))))
 501         ((and (= mode 1)
 502               (= start end)
 503               (char-after start)
 504               (= (char-syntax (char-after start)) ?\)))
 505          (list (save-excursion
 506                  (goto-char (1+ start))
 507                  (backward-sexp 1)
 508                  (point))
 509                (1+ start)))
 510         ((= mode 1)
 511          (list (save-excursion
 512                  (goto-char start)
 513                  (mouse-skip-word -1)
 514                  (point))
 515                (save-excursion
 516                  (goto-char end)
 517                  (mouse-skip-word 1)
 518                  (point))))
 519         ((= mode 2)
 520          (list (save-excursion
 521                  (goto-char start)
 522                  (beginning-of-line 1)
 523                  (point))
 524                (save-excursion
 525                  (goto-char end)
 526                  (forward-line 1)
 527                  (point))))))
 528 \f
 529 ;; Subroutine: set the mark where CLICK happened,
 530 ;; but don't do anything else.
 531 (defun mouse-set-mark-fast (click)
 532   (mouse-minibuffer-check click)
 533   (let ((posn (event-start click)))
 534     (select-window (posn-window posn))
 535     (if (numberp (posn-point posn))
 536         (push-mark (posn-point posn) t t))))
 537
 538 ;; Momentarily show where the mark is, if highlighting doesn't show it.
 539 (defun mouse-show-mark ()
 540   (or transient-mark-mode
 541       (save-excursion
 542         (goto-char (mark t))
 543         (sit-for 1))))
 544
 545 (defun mouse-set-mark (click)
 546   "Set mark at the position clicked on with the mouse.
 547 Display cursor at that position for a second.
 548 This must be bound to a mouse click."
 549   (interactive "e")
 550   (mouse-minibuffer-check click)
 551   (select-window (posn-window (event-start click)))
 552   ;; We don't use save-excursion because that preserves the mark too.
 553   (let ((point-save (point)))
 554     (unwind-protect
 555         (progn (mouse-set-point click)
 556                (push-mark nil t t)
 557                (or transient-mark-mode
 558                    (sit-for 1)))
 559       (goto-char point-save))))
 560
 561 (defun mouse-kill (click)
 562   "Kill the region between point and the mouse click.
 563 The text is saved in the kill ring, as with \\[kill-region]."
 564   (interactive "e")
 565   (mouse-minibuffer-check click)
 566   (let* ((posn (event-start click))
 567          (click-posn (posn-point posn)))
 568     (select-window (posn-window posn))
 569     (if (numberp click-posn)
 570         (kill-region (min (point) click-posn)
 571                      (max (point) click-posn)))))
 572
 573 (defun mouse-yank-at-click (click arg)
 574   "Insert the last stretch of killed text at the position clicked on.
 575 Also move point to one end of the text thus inserted (normally the end).
 576 Prefix arguments are interpreted as with \\[yank].
 577 If `mouse-yank-at-point' is non-nil, insert at point
 578 regardless of where you click."
 579   (interactive "e\nP")
 580   ;; Give temporary modes such as isearch a chance to turn off.
 581   (run-hooks 'mouse-leave-buffer-hook)
 582   (or mouse-yank-at-point (mouse-set-point click))
 583   (setq this-command 'yank)
 584   (yank arg))
 585
 586 (defun mouse-kill-ring-save (click)
 587   "Copy the region between point and the mouse click in the kill ring.
 588 This does not delete the region; it acts like \\[kill-ring-save]."
 589   (interactive "e")
 590   (mouse-set-mark-fast click)
 591   (let (this-command last-command)
 592     (kill-ring-save (point) (mark t)))
 593   (mouse-show-mark))
 594
 595 ;;; This function used to delete the text between point and the mouse
 596 ;;; whenever it was equal to the front of the kill ring, but some
 597 ;;; people found that confusing.
 598
 599 ;;; A list (TEXT START END), describing the text and position of the last
 600 ;;; invocation of mouse-save-then-kill.
 601 (defvar mouse-save-then-kill-posn nil)
 602
 603 (defun mouse-save-then-kill-delete-region (beg end)
 604   ;; We must make our own undo boundaries
 605   ;; because they happen automatically only for the current buffer.
 606   (undo-boundary)
 607   (if (or (= beg end) (eq buffer-undo-list t))
 608       ;; If we have no undo list in this buffer,
 609       ;; just delete.
 610       (delete-region beg end)
 611     ;; Delete, but make the undo-list entry share with the kill ring.
 612     ;; First, delete just one char, so in case buffer is being modified
 613     ;; for the first time, the undo list records that fact.
 614     (let (before-change-function after-change-function
 615           before-change-functions after-change-functions)
 616       (delete-region beg
 617                      (+ beg (if (> end beg) 1 -1))))
 618     (let ((buffer-undo-list buffer-undo-list))
 619       ;; Undo that deletion--but don't change the undo list!
 620       (let (before-change-function after-change-function
 621             before-change-functions after-change-functions)
 622         (primitive-undo 1 buffer-undo-list))
 623       ;; Now delete the rest of the specified region,
 624       ;; but don't record it.
 625       (setq buffer-undo-list t)
 626       (if (/= (length (car kill-ring)) (- (max end beg) (min end beg)))
 627           (error "Lossage in mouse-save-then-kill-delete-region"))
 628       (delete-region beg end))
 629     (let ((tail buffer-undo-list))
 630       ;; Search back in buffer-undo-list for the string
 631       ;; that came from deleting one character.
 632       (while (and tail (not (stringp (car (car tail)))))
 633         (setq tail (cdr tail)))
 634       ;; Replace it with an entry for the entire deleted text.
 635       (and tail
 636            (setcar tail (cons (car kill-ring) (min beg end))))))
 637   (undo-boundary))
 638
 639 (defun mouse-save-then-kill (click)
 640   "Save text to point in kill ring; the second time, kill the text.
 641 If the text between point and the mouse is the same as what's
 642 at the front of the kill ring, this deletes the text.
 643 Otherwise, it adds the text to the kill ring, like \\[kill-ring-save],
 644 which prepares for a second click to delete the text.
 645
 646 If you have selected words or lines, this command extends the
 647 selection through the word or line clicked on.  If you do this
 648 again in a different position, it extends the selection again.
 649 If you do this twice in the same position, the selection is killed."
 650   (interactive "e")
 651   (let ((before-scroll point-before-scroll))
 652     (mouse-minibuffer-check click)
 653     (let ((click-posn (posn-point (event-start click)))
 654           ;; Don't let a subsequent kill command append to this one:
 655           ;; prevent setting this-command to kill-region.
 656           (this-command this-command))
 657       (if (and (mark t) (> (mod mouse-selection-click-count 3) 0))
 658           (if (not (and (eq last-command 'mouse-save-then-kill)
 659                         (equal click-posn
 660                                (car (cdr-safe (cdr-safe mouse-save-then-kill-posn))))))
 661               ;; Find both ends of the object selected by this click.
 662               (let* ((range
 663                       (mouse-start-end click-posn click-posn
 664                                        mouse-selection-click-count)))
 665                 ;; Move whichever end is closer to the click.
 666                 ;; That's what xterm does, and it seems reasonable.
 667                 (if (< (abs (- click-posn (mark t)))
 668                        (abs (- click-posn (point))))
 669                     (set-mark (car range))
 670                   (goto-char (nth 1 range)))
 671                 ;; We have already put the old region in the kill ring.
 672                 ;; Replace it with the extended region.
 673                 ;; (It would be annoying to make a separate entry.)
 674                 (kill-new (buffer-substring (point) (mark t)) t)
 675                 (mouse-set-region-1)
 676                 ;; Arrange for a repeated mouse-3 to kill this region.
 677                 (setq mouse-save-then-kill-posn
 678                       (list (car kill-ring) (point) click-posn))
 679                 (mouse-show-mark))
 680             ;; If we click this button again without moving it,
 681             ;; that time kill.
 682             (mouse-save-then-kill-delete-region (mark) (point))
 683             (setq mouse-selection-click-count 0)
 684             (setq mouse-save-then-kill-posn nil))
 685         (if (and (eq last-command 'mouse-save-then-kill)
 686                  mouse-save-then-kill-posn
 687                  (eq (car mouse-save-then-kill-posn) (car kill-ring))
 688                  (equal (cdr mouse-save-then-kill-posn) (list (point) click-posn)))
 689             ;; If this is the second time we've called
 690             ;; mouse-save-then-kill, delete the text from the buffer.
 691             (progn
 692               (mouse-save-then-kill-delete-region (point) (mark))
 693               ;; After we kill, another click counts as "the first time".
 694               (setq mouse-save-then-kill-posn nil))
 695           (if (or (and (eq last-command 'mouse-save-then-kill)
 696                        mouse-save-then-kill-posn)
 697                   (and mark-active transient-mark-mode)
 698                   (and (memq last-command
 699                              '(mouse-drag-region mouse-set-region))
 700                        (or mark-even-if-inactive
 701                            (not transient-mark-mode))))
 702               ;; We have a selection or suitable region, so adjust it.
 703               (let* ((posn (event-start click))
 704                      (new (posn-point posn)))
 705                 (select-window (posn-window posn))
 706                 (if (numberp new)
 707                     (progn
 708                       ;; Move whichever end of the region is closer to the click.
 709                       ;; That is what xterm does, and it seems reasonable.
 710                       (if (< (abs (- new (point))) (abs (- new (mark t))))
 711                           (goto-char new)
 712                         (set-mark new))
 713                       (setq deactivate-mark nil)))
 714                 (kill-new (buffer-substring (point) (mark t)) t)
 715                 (mouse-show-mark))
 716             ;; Set the mark where point is, then move where clicked.
 717             (mouse-set-mark-fast click)
 718             (if before-scroll
 719                 (goto-char before-scroll))
 720             (exchange-point-and-mark)
 721             (kill-new (buffer-substring (point) (mark t))))
 722           (mouse-set-region-1)
 723           (setq mouse-save-then-kill-posn
 724                 (list (car kill-ring) (point) click-posn)))))))
 725 \f
 726 (global-set-key [M-mouse-1] 'mouse-start-secondary)
 727 (global-set-key [M-drag-mouse-1] 'mouse-set-secondary)
 728 (global-set-key [M-down-mouse-1] 'mouse-drag-secondary)
 729 (global-set-key [M-mouse-3] 'mouse-secondary-save-then-kill)
 730 (global-set-key [M-mouse-2] 'mouse-yank-secondary)
 731
 732 ;; An overlay which records the current secondary selection
 733 ;; or else is deleted when there is no secondary selection.
 734 ;; May be nil.
 735 (defvar mouse-secondary-overlay nil)
 736
 737 (defvar mouse-secondary-click-count 0)
 738
 739 ;; A marker which records the specified first end for a secondary selection.
 740 ;; May be nil.
 741 (defvar mouse-secondary-start nil)
 742
 743 (defun mouse-start-secondary (click)
 744   "Set one end of the secondary selection to the position clicked on.
 745 Use \\[mouse-secondary-save-then-kill] to set the other end
 746 and complete the secondary selection."
 747   (interactive "e")
 748   (mouse-minibuffer-check click)
 749   (let ((posn (event-start click)))
 750     (save-excursion
 751       (set-buffer (window-buffer (posn-window posn)))
 752       ;; Cancel any preexisting secondary selection.
 753       (if mouse-secondary-overlay
 754           (delete-overlay mouse-secondary-overlay))
 755       (if (numberp (posn-point posn))
 756           (progn
 757             (or mouse-secondary-start
 758                 (setq mouse-secondary-start (make-marker)))
 759             (move-marker mouse-secondary-start (posn-point posn)))))))
 760
 761 (defun mouse-set-secondary (click)
 762   "Set the secondary selection to the text that the mouse is dragged over.
 763 This must be bound to a mouse drag event."
 764   (interactive "e")
 765   (mouse-minibuffer-check click)
 766   (let ((posn (event-start click))
 767         beg
 768         (end (event-end click)))
 769     (save-excursion
 770       (set-buffer (window-buffer (posn-window posn)))
 771       (if (numberp (posn-point posn))
 772           (setq beg (posn-point posn)))
 773       (if mouse-secondary-overlay
 774           (move-overlay mouse-secondary-overlay beg (posn-point end))
 775         (setq mouse-secondary-overlay (make-overlay beg (posn-point end))))
 776       (overlay-put mouse-secondary-overlay 'face 'secondary-selection))))
 777
 778 (defun mouse-drag-secondary (start-event)
 779   "Set the secondary selection to the text that the mouse is dragged over.
 780 Highlight the drag area as you move the mouse.
 781 This must be bound to a button-down mouse event."
 782   (interactive "e")
 783   (mouse-minibuffer-check start-event)
 784   (let* ((start-posn (event-start start-event))
 785          (start-point (posn-point start-posn))
 786          (start-window (posn-window start-posn))
 787          (start-frame (window-frame start-window))
 788          (bounds (window-edges start-window))
 789          (top (nth 1 bounds))
 790          (bottom (if (window-minibuffer-p start-window)
 791                      (nth 3 bounds)
 792                    ;; Don't count the mode line.
 793                    (1- (nth 3 bounds))))
 794          (click-count (1- (event-click-count start-event))))
 795     (save-excursion
 796       (set-buffer (window-buffer start-window))
 797       (setq mouse-secondary-click-count click-count)
 798       (or mouse-secondary-overlay
 799           (setq mouse-secondary-overlay
 800                 (make-overlay (point) (point))))
 801       (overlay-put mouse-secondary-overlay 'face 'secondary-selection)
 802       (if (> (mod click-count 3) 0)
 803           ;; Double or triple press: make an initial selection
 804           ;; of one word or line.
 805           (let ((range (mouse-start-end start-point start-point click-count)))
 806             (set-marker mouse-secondary-start nil)
 807             (move-overlay mouse-secondary-overlay 1 1
 808                           (window-buffer start-window))
 809             (move-overlay mouse-secondary-overlay (car range) (nth 1 range)
 810                           (window-buffer start-window)))
 811         ;; Single-press: cancel any preexisting secondary selection.
 812         (or mouse-secondary-start
 813             (setq mouse-secondary-start (make-marker)))
 814         (set-marker mouse-secondary-start start-point)
 815         (delete-overlay mouse-secondary-overlay))
 816       (let (event end end-point)
 817         (track-mouse
 818           (while (progn
 819                    (setq event (read-event))
 820                    (or (mouse-movement-p event)
 821                        (eq (car-safe event) 'switch-frame)))
 822
 823             (if (eq (car-safe event) 'switch-frame)
 824                 nil
 825               (setq end (event-end event)
 826                     end-point (posn-point end))
 827               (cond
 828                ;; Are we moving within the original window?
 829                ((and (eq (posn-window end) start-window)
 830                      (integer-or-marker-p end-point))
 831                 (let ((range (mouse-start-end start-point end-point
 832                                               click-count)))
 833                   (if (or (/= start-point end-point)
 834                           (null (marker-position mouse-secondary-start)))
 835                       (progn
 836                         (set-marker mouse-secondary-start nil)
 837                         (move-overlay mouse-secondary-overlay
 838                                       (car range) (nth 1 range))))))
 839                (t
 840                 (let ((mouse-row (cdr (cdr (mouse-position)))))
 841                   (cond
 842                    ((null mouse-row))
 843                    ((< mouse-row top)
 844                     (mouse-scroll-subr start-window (- mouse-row top)
 845                                        mouse-secondary-overlay start-point))
 846                    ((>= mouse-row bottom)
 847                     (mouse-scroll-subr start-window (1+ (- mouse-row bottom))
 848                                        mouse-secondary-overlay start-point)))))))))
 849
 850         (if (consp event)
 851 ;;;              (eq (get (event-basic-type event) 'event-kind) 'mouse-click)
 852 ;;;              (eq (posn-window (event-end event)) start-window)
 853 ;;;              (numberp (posn-point (event-end event)))
 854             (if (marker-position mouse-secondary-start)
 855                 (save-window-excursion
 856                   (delete-overlay mouse-secondary-overlay)
 857                   (x-set-selection 'SECONDARY nil)
 858                   (select-window start-window)
 859                   (save-excursion
 860                     (goto-char mouse-secondary-start)
 861                     (sit-for 1)))
 862               (x-set-selection
 863                'SECONDARY
 864                (buffer-substring (overlay-start mouse-secondary-overlay)
 865                                  (overlay-end mouse-secondary-overlay)))))))))
 866
 867 (defun mouse-yank-secondary (click)
 868   "Insert the secondary selection at the position clicked on.
 869 Move point to the end of the inserted text.
 870 If `mouse-yank-at-point' is non-nil, insert at point
 871 regardless of where you click."
 872   (interactive "e")
 873   ;; Give temporary modes such as isearch a chance to turn off.
 874   (run-hooks 'mouse-leave-buffer-hook)
 875   (or mouse-yank-at-point (mouse-set-point click))
 876   (insert (x-get-selection 'SECONDARY)))
 877
 878 (defun mouse-kill-secondary ()
 879   "Kill the text in the secondary selection.
 880 This is intended more as a keyboard command than as a mouse command
 881 but it can work as either one.
 882
 883 The current buffer (in case of keyboard use), or the buffer clicked on,
 884 must be the one that the secondary selection is in.  This requirement
 885 is to prevent accidents."
 886   (interactive)
 887   (let* ((keys (this-command-keys))
 888          (click (elt keys (1- (length keys)))))
 889     (or (eq (overlay-buffer mouse-secondary-overlay)
 890             (if (listp click)
 891                 (window-buffer (posn-window (event-start click)))
 892               (current-buffer)))
 893         (error "Select or click on the buffer where the secondary selection is")))
 894   (let (this-command)
 895     (save-excursion
 896       (set-buffer (overlay-buffer mouse-secondary-overlay))
 897       (kill-region (overlay-start mouse-secondary-overlay)
 898                    (overlay-end mouse-secondary-overlay))))
 899   (delete-overlay mouse-secondary-overlay)
 900 ;;;  (x-set-selection 'SECONDARY nil)
 901   (setq mouse-secondary-overlay nil))
 902
 903 (defun mouse-secondary-save-then-kill (click)
 904   "Save text to point in kill ring; the second time, kill the text.
 905 You must use this in a buffer where you have recently done \\[mouse-start-secondary].
 906 If the text between where you did \\[mouse-start-secondary] and where
 907 you use this command matches the text at the front of the kill ring,
 908 this command deletes the text.
 909 Otherwise, it adds the text to the kill ring, like \\[kill-ring-save],
 910 which prepares for a second click with this command to delete the text.
 911
 912 If you have already made a secondary selection in that buffer,
 913 this command extends or retracts the selection to where you click.
 914 If you do this again in a different position, it extends or retracts
 915 again.  If you do this twice in the same position, it kills the selection."
 916   (interactive "e")
 917   (mouse-minibuffer-check click)
 918   (let ((posn (event-start click))
 919         (click-posn (posn-point (event-start click)))
 920         ;; Don't let a subsequent kill command append to this one:
 921         ;; prevent setting this-command to kill-region.
 922         (this-command this-command))
 923     (or (eq (window-buffer (posn-window posn))
 924             (or (and mouse-secondary-overlay
 925                      (overlay-buffer mouse-secondary-overlay))
 926                 (if mouse-secondary-start
 927                     (marker-buffer mouse-secondary-start))))
 928         (error "Wrong buffer"))
 929     (save-excursion
 930       (set-buffer (window-buffer (posn-window posn)))
 931       (if (> (mod mouse-secondary-click-count 3) 0)
 932           (if (not (and (eq last-command 'mouse-secondary-save-then-kill)
 933                         (equal click-posn
 934                                (car (cdr-safe (cdr-safe mouse-save-then-kill-posn))))))
 935               ;; Find both ends of the object selected by this click.
 936               (let* ((range
 937                       (mouse-start-end click-posn click-posn
 938                                        mouse-secondary-click-count)))
 939                 ;; Move whichever end is closer to the click.
 940                 ;; That's what xterm does, and it seems reasonable.
 941                 (if (< (abs (- click-posn (overlay-start mouse-secondary-overlay)))
 942                        (abs (- click-posn (overlay-end mouse-secondary-overlay))))
 943                     (move-overlay mouse-secondary-overlay (car range)
 944                                   (overlay-end mouse-secondary-overlay))
 945                   (move-overlay mouse-secondary-overlay
 946                                 (overlay-start mouse-secondary-overlay)
 947                                 (nth 1 range)))
 948                 ;; We have already put the old region in the kill ring.
 949                 ;; Replace it with the extended region.
 950                 ;; (It would be annoying to make a separate entry.)
 951                 (kill-new (buffer-substring
 952                            (overlay-start mouse-secondary-overlay)
 953                            (overlay-end mouse-secondary-overlay)) t)
 954                 ;; Arrange for a repeated mouse-3 to kill this region.
 955                 (setq mouse-save-then-kill-posn
 956                       (list (car kill-ring) (point) click-posn)))
 957             ;; If we click this button again without moving it,
 958             ;; that time kill.
 959             (progn
 960               (mouse-save-then-kill-delete-region
 961                (overlay-start mouse-secondary-overlay)
 962                (overlay-end mouse-secondary-overlay))
 963               (setq mouse-save-then-kill-posn nil)
 964               (setq mouse-secondary-click-count 0)
 965               (delete-overlay mouse-secondary-overlay)))
 966         (if (and (eq last-command 'mouse-secondary-save-then-kill)
 967                  mouse-save-then-kill-posn
 968                  (eq (car mouse-save-then-kill-posn) (car kill-ring))
 969                  (equal (cdr mouse-save-then-kill-posn) (list (point) click-posn)))
 970             ;; If this is the second time we've called
 971             ;; mouse-secondary-save-then-kill, delete the text from the buffer.
 972             (progn
 973               (mouse-save-then-kill-delete-region
 974                (overlay-start mouse-secondary-overlay)
 975                (overlay-end mouse-secondary-overlay))
 976               (setq mouse-save-then-kill-posn nil)
 977               (delete-overlay mouse-secondary-overlay))
 978           (if (overlay-start mouse-secondary-overlay)
 979               ;; We have a selection, so adjust it.
 980               (progn
 981                 (if (numberp click-posn)
 982                     (progn
 983                       ;; Move whichever end of the region is closer to the click.
 984                       ;; That is what xterm does, and it seems reasonable.
 985                       (if (< (abs (- click-posn (overlay-start mouse-secondary-overlay)))
 986                              (abs (- click-posn (overlay-end mouse-secondary-overlay))))
 987                           (move-overlay mouse-secondary-overlay click-posn
 988                                         (overlay-end mouse-secondary-overlay))
 989                         (move-overlay mouse-secondary-overlay
 990                                       (overlay-start mouse-secondary-overlay)
 991                                       click-posn))
 992                       (setq deactivate-mark nil)))
 993                 (if (eq last-command 'mouse-secondary-save-then-kill)
 994                     ;; If the front of the kill ring comes from
 995                     ;; an immediately previous use of this command,
 996                     ;; replace it with the extended region.
 997                     ;; (It would be annoying to make a separate entry.)
 998                     (kill-new (buffer-substring
 999                                (overlay-start mouse-secondary-overlay)
1000                                (overlay-end mouse-secondary-overlay)) t)
1001                   (copy-region-as-kill (overlay-start mouse-secondary-overlay)
1002                                        (overlay-end mouse-secondary-overlay))))
1003             (if mouse-secondary-start
1004                 ;; All we have is one end of a selection,
1005                 ;; so put the other end here.
1006                 (let ((start (+ 0 mouse-secondary-start)))
1007                   (kill-ring-save start click-posn)
1008                   (if mouse-secondary-overlay
1009                       (move-overlay mouse-secondary-overlay start click-posn)
1010                     (setq mouse-secondary-overlay (make-overlay start click-posn)))
1011                   (overlay-put mouse-secondary-overlay 'face 'secondary-selection))))
1012           (setq mouse-save-then-kill-posn
1013                 (list (car kill-ring) (point) click-posn))))
1014       (if (overlay-buffer mouse-secondary-overlay)
1015           (x-set-selection 'SECONDARY
1016                            (buffer-substring
1017                             (overlay-start mouse-secondary-overlay)
1018                             (overlay-end mouse-secondary-overlay)))))))
1019 \f
1020 (defun mouse-buffer-menu (event)
1021   "Pop up a menu of buffers for selection with the mouse.
1022 This switches buffers in the window that you clicked on,
1023 and selects that window."
1024   (interactive "e")
1025   (mouse-minibuffer-check event)
1026   (let ((menu
1027          (list "Buffer Menu"
1028                (cons "Select Buffer"
1029                      (let ((tail (buffer-list))
1030                            (maxbuf 0)
1031                            head)
1032                        (while tail
1033                          (or (eq ?\ (aref (buffer-name (car tail)) 0))
1034                              (setq maxbuf
1035                                    (max maxbuf
1036                                         (length (buffer-name (car tail))))))
1037                          (setq tail (cdr tail)))
1038                        (setq tail (buffer-list))
1039                        (while tail
1040                          (let ((elt (car tail)))
1041                            (if (not (string-match "^ "
1042                                                   (buffer-name elt)))
1043                                (setq head
1044                                 (cons
1045                                  (cons
1046                                   (format
1047                                    (format "%%%ds  %%s%%s  %%s" maxbuf)
1048                                    (buffer-name elt)
1049                                    (if (buffer-modified-p elt) "*" " ")
1050                                    (save-excursion
1051                                      (set-buffer elt)
1052                                      (if buffer-read-only "%" " "))
1053                                    (or (buffer-file-name elt)
1054                                        (save-excursion
1055                                          (set-buffer elt)
1056                                          (if list-buffers-directory
1057                                              (expand-file-name
1058                                               list-buffers-directory)))
1059                                        ""))
1060                                   elt)
1061                                  head))))
1062                          (setq tail (cdr tail)))
1063                        (reverse head))))))
1064     (let ((buf (x-popup-menu event menu))
1065           (window (posn-window (event-start event))))
1066       (if buf
1067           (progn
1068             (or (framep window) (select-window window))
1069             (switch-to-buffer buf))))))
1070 \f
1071 ;;; These need to be rewritten for the new scroll bar implementation.
1072
1073 ;;;!! ;; Commands for the scroll bar.
1074 ;;;!!
1075 ;;;!! (defun mouse-scroll-down (click)
1076 ;;;!!   (interactive "@e")
1077 ;;;!!   (scroll-down (1+ (cdr (mouse-coords click)))))
1078 ;;;!!
1079 ;;;!! (defun mouse-scroll-up (click)
1080 ;;;!!   (interactive "@e")
1081 ;;;!!   (scroll-up (1+ (cdr (mouse-coords click)))))
1082 ;;;!!
1083 ;;;!! (defun mouse-scroll-down-full ()
1084 ;;;!!   (interactive "@")
1085 ;;;!!   (scroll-down nil))
1086 ;;;!!
1087 ;;;!! (defun mouse-scroll-up-full ()
1088 ;;;!!   (interactive "@")
1089 ;;;!!   (scroll-up nil))
1090 ;;;!!
1091 ;;;!! (defun mouse-scroll-move-cursor (click)
1092 ;;;!!   (interactive "@e")
1093 ;;;!!   (move-to-window-line (1+ (cdr (mouse-coords click)))))
1094 ;;;!!
1095 ;;;!! (defun mouse-scroll-absolute (event)
1096 ;;;!!   (interactive "@e")
1097 ;;;!!   (let* ((pos (car event))
1098 ;;;!!    (position (car pos))
1099 ;;;!!    (length (car (cdr pos))))
1100 ;;;!!     (if (<= length 0) (setq length 1))
1101 ;;;!!     (let* ((scale-factor (max 1 (/ length (/ 8000000 (buffer-size)))))
1102 ;;;!!      (newpos (* (/ (* (/ (buffer-size) scale-factor)
1103 ;;;!!                       position)
1104 ;;;!!                    length)
1105 ;;;!!                 scale-factor)))
1106 ;;;!!       (goto-char newpos)
1107 ;;;!!       (recenter '(4)))))
1108 ;;;!!
1109 ;;;!! (defun mouse-scroll-left (click)
1110 ;;;!!   (interactive "@e")
1111 ;;;!!   (scroll-left (1+ (car (mouse-coords click)))))
1112 ;;;!!
1113 ;;;!! (defun mouse-scroll-right (click)
1114 ;;;!!   (interactive "@e")
1115 ;;;!!   (scroll-right (1+ (car (mouse-coords click)))))
1116 ;;;!!
1117 ;;;!! (defun mouse-scroll-left-full ()
1118 ;;;!!   (interactive "@")
1119 ;;;!!   (scroll-left nil))
1120 ;;;!!
1121 ;;;!! (defun mouse-scroll-right-full ()
1122 ;;;!!   (interactive "@")
1123 ;;;!!   (scroll-right nil))
1124 ;;;!!
1125 ;;;!! (defun mouse-scroll-move-cursor-horizontally (click)
1126 ;;;!!   (interactive "@e")
1127 ;;;!!   (move-to-column (1+ (car (mouse-coords click)))))
1128 ;;;!!
1129 ;;;!! (defun mouse-scroll-absolute-horizontally (event)
1130 ;;;!!   (interactive "@e")
1131 ;;;!!   (let* ((pos (car event))
1132 ;;;!!    (position (car pos))
1133 ;;;!!    (length (car (cdr pos))))
1134 ;;;!!   (set-window-hscroll (selected-window) 33)))
1135 ;;;!!
1136 ;;;!! (global-set-key [scroll-bar mouse-1] 'mouse-scroll-up)
1137 ;;;!! (global-set-key [scroll-bar mouse-2] 'mouse-scroll-absolute)
1138 ;;;!! (global-set-key [scroll-bar mouse-3] 'mouse-scroll-down)
1139 ;;;!!
1140 ;;;!! (global-set-key [vertical-slider mouse-1] 'mouse-scroll-move-cursor)
1141 ;;;!! (global-set-key [vertical-slider mouse-2] 'mouse-scroll-move-cursor)
1142 ;;;!! (global-set-key [vertical-slider mouse-3] 'mouse-scroll-move-cursor)
1143 ;;;!!
1144 ;;;!! (global-set-key [thumbup mouse-1] 'mouse-scroll-up-full)
1145 ;;;!! (global-set-key [thumbup mouse-2] 'mouse-scroll-up-full)
1146 ;;;!! (global-set-key [thumbup mouse-3] 'mouse-scroll-up-full)
1147 ;;;!!
1148 ;;;!! (global-set-key [thumbdown mouse-1] 'mouse-scroll-down-full)
1149 ;;;!! (global-set-key [thumbdown mouse-2] 'mouse-scroll-down-full)
1150 ;;;!! (global-set-key [thumbdown mouse-3] 'mouse-scroll-down-full)
1151 ;;;!!
1152 ;;;!! (global-set-key [horizontal-scroll-bar mouse-1] 'mouse-scroll-left)
1153 ;;;!! (global-set-key [horizontal-scroll-bar mouse-2]
1154 ;;;!!           'mouse-scroll-absolute-horizontally)
1155 ;;;!! (global-set-key [horizontal-scroll-bar mouse-3] 'mouse-scroll-right)
1156 ;;;!!
1157 ;;;!! (global-set-key [horizontal-slider mouse-1]
1158 ;;;!!           'mouse-scroll-move-cursor-horizontally)
1159 ;;;!! (global-set-key [horizontal-slider mouse-2]
1160 ;;;!!           'mouse-scroll-move-cursor-horizontally)
1161 ;;;!! (global-set-key [horizontal-slider mouse-3]
1162 ;;;!!           'mouse-scroll-move-cursor-horizontally)
1163 ;;;!!
1164 ;;;!! (global-set-key [thumbleft mouse-1] 'mouse-scroll-left-full)
1165 ;;;!! (global-set-key [thumbleft mouse-2] 'mouse-scroll-left-full)
1166 ;;;!! (global-set-key [thumbleft mouse-3] 'mouse-scroll-left-full)
1167 ;;;!!
1168 ;;;!! (global-set-key [thumbright mouse-1] 'mouse-scroll-right-full)
1169 ;;;!! (global-set-key [thumbright mouse-2] 'mouse-scroll-right-full)
1170 ;;;!! (global-set-key [thumbright mouse-3] 'mouse-scroll-right-full)
1171 ;;;!!
1172 ;;;!! (global-set-key [horizontal-scroll-bar S-mouse-2]
1173 ;;;!!           'mouse-split-window-horizontally)
1174 ;;;!! (global-set-key [mode-line S-mouse-2]
1175 ;;;!!           'mouse-split-window-horizontally)
1176 ;;;!! (global-set-key [vertical-scroll-bar S-mouse-2]
1177 ;;;!!           'mouse-split-window)
1178 \f
1179 ;;;!! ;;;;
1180 ;;;!! ;;;; Here are experimental things being tested.  Mouse events
1181 ;;;!! ;;;; are of the form:
1182 ;;;!! ;;;;      ((x y) window screen-part key-sequence timestamp)
1183 ;;;!! ;;
1184 ;;;!! ;;;;
1185 ;;;!! ;;;; Dynamically track mouse coordinates
1186 ;;;!! ;;;;
1187 ;;;!! ;;
1188 ;;;!! ;;(defun track-mouse (event)
1189 ;;;!! ;;  "Track the coordinates, absolute and relative, of the mouse."
1190 ;;;!! ;;  (interactive "@e")
1191 ;;;!! ;;  (while mouse-grabbed
1192 ;;;!! ;;    (let* ((pos (read-mouse-position (selected-screen)))
1193 ;;;!! ;;           (abs-x (car pos))
1194 ;;;!! ;;           (abs-y (cdr pos))
1195 ;;;!! ;;           (relative-coordinate (coordinates-in-window-p
1196 ;;;!! ;;                                 (list (car pos) (cdr pos))
1197 ;;;!! ;;                                 (selected-window))))
1198 ;;;!! ;;      (if (consp relative-coordinate)
1199 ;;;!! ;;          (message "mouse: [%d %d], (%d %d)" abs-x abs-y
1200 ;;;!! ;;                   (car relative-coordinate)
1201 ;;;!! ;;                   (car (cdr relative-coordinate)))
1202 ;;;!! ;;        (message "mouse: [%d %d]" abs-x abs-y)))))
1203 ;;;!!
1204 ;;;!! ;;
1205 ;;;!! ;; Dynamically put a box around the line indicated by point
1206 ;;;!! ;;
1207 ;;;!! ;;
1208 ;;;!! ;;(require 'backquote)
1209 ;;;!! ;;
1210 ;;;!! ;;(defun mouse-select-buffer-line (event)
1211 ;;;!! ;;  (interactive "@e")
1212 ;;;!! ;;  (let ((relative-coordinate
1213 ;;;!! ;;         (coordinates-in-window-p (car event) (selected-window)))
1214 ;;;!! ;;        (abs-y (car (cdr (car event)))))
1215 ;;;!! ;;    (if (consp relative-coordinate)
1216 ;;;!! ;;        (progn
1217 ;;;!! ;;          (save-excursion
1218 ;;;!! ;;            (move-to-window-line (car (cdr relative-coordinate)))
1219 ;;;!! ;;            (x-draw-rectangle
1220 ;;;!! ;;             (selected-screen)
1221 ;;;!! ;;             abs-y 0
1222 ;;;!! ;;             (save-excursion
1223 ;;;!! ;;                 (move-to-window-line (car (cdr relative-coordinate)))
1224 ;;;!! ;;                 (end-of-line)
1225 ;;;!! ;;                 (push-mark nil t)
1226 ;;;!! ;;                 (beginning-of-line)
1227 ;;;!! ;;                 (- (region-end) (region-beginning))) 1))
1228 ;;;!! ;;          (sit-for 1)
1229 ;;;!! ;;          (x-erase-rectangle (selected-screen))))))
1230 ;;;!! ;;
1231 ;;;!! ;;(defvar last-line-drawn nil)
1232 ;;;!! ;;(defvar begin-delim "[^ \t]")
1233 ;;;!! ;;(defvar end-delim   "[^ \t]")
1234 ;;;!! ;;
1235 ;;;!! ;;(defun mouse-boxing (event)
1236 ;;;!! ;;  (interactive "@e")
1237 ;;;!! ;;  (save-excursion
1238 ;;;!! ;;    (let ((screen (selected-screen)))
1239 ;;;!! ;;      (while (= (x-mouse-events) 0)
1240 ;;;!! ;;        (let* ((pos (read-mouse-position screen))
1241 ;;;!! ;;               (abs-x (car pos))
1242 ;;;!! ;;               (abs-y (cdr pos))
1243 ;;;!! ;;               (relative-coordinate
1244 ;;;!! ;;                (coordinates-in-window-p (` ((, abs-x) (, abs-y)))
1245 ;;;!! ;;                                         (selected-window)))
1246 ;;;!! ;;               (begin-reg nil)
1247 ;;;!! ;;               (end-reg nil)
1248 ;;;!! ;;               (end-column nil)
1249 ;;;!! ;;               (begin-column nil))
1250 ;;;!! ;;          (if (and (consp relative-coordinate)
1251 ;;;!! ;;                   (or (not last-line-drawn)
1252 ;;;!! ;;                       (not (= last-line-drawn abs-y))))
1253 ;;;!! ;;              (progn
1254 ;;;!! ;;                (move-to-window-line (car (cdr relative-coordinate)))
1255 ;;;!! ;;                (if (= (following-char) 10)
1256 ;;;!! ;;                    ()
1257 ;;;!! ;;                  (progn
1258 ;;;!! ;;                    (setq begin-reg (1- (re-search-forward end-delim)))
1259 ;;;!! ;;                    (setq begin-column (1- (current-column)))
1260 ;;;!! ;;                    (end-of-line)
1261 ;;;!! ;;                    (setq end-reg (1+ (re-search-backward begin-delim)))
1262 ;;;!! ;;                    (setq end-column (1+ (current-column)))
1263 ;;;!! ;;                    (message "%s" (buffer-substring begin-reg end-reg))
1264 ;;;!! ;;                    (x-draw-rectangle screen
1265 ;;;!! ;;                                      (setq last-line-drawn abs-y)
1266 ;;;!! ;;                                      begin-column
1267 ;;;!! ;;                                      (- end-column begin-column) 1))))))))))
1268 ;;;!! ;;
1269 ;;;!! ;;(defun mouse-erase-box ()
1270 ;;;!! ;;  (interactive)
1271 ;;;!! ;;  (if last-line-drawn
1272 ;;;!! ;;      (progn
1273 ;;;!! ;;        (x-erase-rectangle (selected-screen))
1274 ;;;!! ;;        (setq last-line-drawn nil))))
1275 ;;;!!
1276 ;;;!! ;;; (defun test-x-rectangle ()
1277 ;;;!! ;;;   (use-local-mouse-map (setq rectangle-test-map (make-sparse-keymap)))
1278 ;;;!! ;;;   (define-key rectangle-test-map mouse-motion-button-left 'mouse-boxing)
1279 ;;;!! ;;;   (define-key rectangle-test-map mouse-button-left-up 'mouse-erase-box))
1280 ;;;!!
1281 ;;;!! ;;
1282 ;;;!! ;; Here is how to do double clicking in lisp.  About to change.
1283 ;;;!! ;;
1284 ;;;!!
1285 ;;;!! (defvar double-start nil)
1286 ;;;!! (defconst double-click-interval 300
1287 ;;;!!   "Max ticks between clicks")
1288 ;;;!!
1289 ;;;!! (defun double-down (event)
1290 ;;;!!   (interactive "@e")
1291 ;;;!!   (if double-start
1292 ;;;!!       (let ((interval (- (nth 4 event) double-start)))
1293 ;;;!!   (if (< interval double-click-interval)
1294 ;;;!!       (progn
1295 ;;;!!         (backward-up-list 1)
1296 ;;;!!         ;;      (message "Interval %d" interval)
1297 ;;;!!         (sleep-for 1)))
1298 ;;;!!   (setq double-start nil))
1299 ;;;!!     (setq double-start (nth 4 event))))
1300 ;;;!!
1301 ;;;!! (defun double-up (event)
1302 ;;;!!   (interactive "@e")
1303 ;;;!!   (and double-start
1304 ;;;!!        (> (- (nth 4 event ) double-start) double-click-interval)
1305 ;;;!!        (setq double-start nil)))
1306 ;;;!!
1307 ;;;!! ;;; (defun x-test-doubleclick ()
1308 ;;;!! ;;;   (use-local-mouse-map (setq doubleclick-test-map (make-sparse-keymap)))
1309 ;;;!! ;;;   (define-key doubleclick-test-map mouse-button-left 'double-down)
1310 ;;;!! ;;;   (define-key doubleclick-test-map mouse-button-left-up 'double-up))
1311 ;;;!!
1312 ;;;!! ;;
1313 ;;;!! ;; This scrolls while button is depressed.  Use preferable in scroll bar.
1314 ;;;!! ;;
1315 ;;;!!
1316 ;;;!! (defvar scrolled-lines 0)
1317 ;;;!! (defconst scroll-speed 1)
1318 ;;;!!
1319 ;;;!! (defun incr-scroll-down (event)
1320 ;;;!!   (interactive "@e")
1321 ;;;!!   (setq scrolled-lines 0)
1322 ;;;!!   (incremental-scroll scroll-speed))
1323 ;;;!!
1324 ;;;!! (defun incr-scroll-up (event)
1325 ;;;!!   (interactive "@e")
1326 ;;;!!   (setq scrolled-lines 0)
1327 ;;;!!   (incremental-scroll (- scroll-speed)))
1328 ;;;!!
1329 ;;;!! (defun incremental-scroll (n)
1330 ;;;!!   (while (= (x-mouse-events) 0)
1331 ;;;!!     (setq scrolled-lines (1+ (* scroll-speed scrolled-lines)))
1332 ;;;!!     (scroll-down n)
1333 ;;;!!     (sit-for 300 t)))
1334 ;;;!!
1335 ;;;!! (defun incr-scroll-stop (event)
1336 ;;;!!   (interactive "@e")
1337 ;;;!!   (message "Scrolled %d lines" scrolled-lines)
1338 ;;;!!   (setq scrolled-lines 0)
1339 ;;;!!   (sleep-for 1))
1340 ;;;!!
1341 ;;;!! ;;; (defun x-testing-scroll ()
1342 ;;;!! ;;;   (let ((scrolling-map (function mouse-vertical-scroll-bar-prefix)))
1343 ;;;!! ;;;     (define-key scrolling-map mouse-button-left 'incr-scroll-down)
1344 ;;;!! ;;;     (define-key scrolling-map mouse-button-right 'incr-scroll-up)
1345 ;;;!! ;;;     (define-key scrolling-map mouse-button-left-up 'incr-scroll-stop)
1346 ;;;!! ;;;     (define-key scrolling-map mouse-button-right-up 'incr-scroll-stop)))
1347 ;;;!!
1348 ;;;!! ;;
1349 ;;;!! ;; Some playthings suitable for picture mode?  They need work.
1350 ;;;!! ;;
1351 ;;;!!
1352 ;;;!! (defun mouse-kill-rectangle (event)
1353 ;;;!!   "Kill the rectangle between point and the mouse cursor."
1354 ;;;!!   (interactive "@e")
1355 ;;;!!   (let ((point-save (point)))
1356 ;;;!!     (save-excursion
1357 ;;;!!       (mouse-set-point event)
1358 ;;;!!       (push-mark nil t)
1359 ;;;!!       (if (> point-save (point))
1360 ;;;!!     (kill-rectangle (point) point-save)
1361 ;;;!!   (kill-rectangle point-save (point))))))
1362 ;;;!!
1363 ;;;!! (defun mouse-open-rectangle (event)
1364 ;;;!!   "Kill the rectangle between point and the mouse cursor."
1365 ;;;!!   (interactive "@e")
1366 ;;;!!   (let ((point-save (point)))
1367 ;;;!!     (save-excursion
1368 ;;;!!       (mouse-set-point event)
1369 ;;;!!       (push-mark nil t)
1370 ;;;!!       (if (> point-save (point))
1371 ;;;!!     (open-rectangle (point) point-save)
1372 ;;;!!   (open-rectangle point-save (point))))))
1373 ;;;!!
1374 ;;;!! ;; Must be a better way to do this.
1375 ;;;!!
1376 ;;;!! (defun mouse-multiple-insert (n char)
1377 ;;;!!   (while (> n 0)
1378 ;;;!!     (insert char)
1379 ;;;!!     (setq n (1- n))))
1380 ;;;!!
1381 ;;;!! ;; What this could do is not finalize until button was released.
1382 ;;;!!
1383 ;;;!! (defun mouse-move-text (event)
1384 ;;;!!   "Move text from point to cursor position, inserting spaces."
1385 ;;;!!   (interactive "@e")
1386 ;;;!!   (let* ((relative-coordinate
1387 ;;;!!     (coordinates-in-window-p (car event) (selected-window))))
1388 ;;;!!     (if (consp relative-coordinate)
1389 ;;;!!   (cond ((> (current-column) (car relative-coordinate))
1390 ;;;!!          (delete-char
1391 ;;;!!           (- (car relative-coordinate) (current-column))))
1392 ;;;!!         ((< (current-column) (car relative-coordinate))
1393 ;;;!!          (mouse-multiple-insert
1394 ;;;!!           (- (car relative-coordinate) (current-column)) " "))
1395 ;;;!!         ((= (current-column) (car relative-coordinate)) (ding))))))
1396 \f
1397 ;; Choose a completion with the mouse.
1398
1399 (defun mouse-choose-completion (event)
1400   "Click on an alternative in the `*Completions*' buffer to choose it."
1401   (interactive "e")
1402   ;; Give temporary modes such as isearch a chance to turn off.
1403   (run-hooks 'mouse-leave-buffer-hook)
1404   (let ((buffer (window-buffer))
1405         choice
1406         base-size)
1407     (save-excursion
1408       (set-buffer (window-buffer (posn-window (event-start event))))
1409       (if completion-reference-buffer
1410           (setq buffer completion-reference-buffer))
1411       (setq base-size completion-base-size)
1412       (save-excursion
1413         (goto-char (posn-point (event-start event)))
1414         (let (beg end)
1415           (if (and (not (eobp)) (get-text-property (point) 'mouse-face))
1416               (setq end (point) beg (1+ (point))))
1417           (if (null beg)
1418               (error "No completion here"))
1419           (setq beg (previous-single-property-change beg 'mouse-face))
1420           (setq end (or (next-single-property-change end 'mouse-face)
1421                         (point-max)))
1422           (setq choice (buffer-substring beg end)))))
1423     (let ((owindow (selected-window)))
1424       (select-window (posn-window (event-start event)))
1425       (if (and (one-window-p t 'selected-frame)
1426                (window-dedicated-p (selected-window)))
1427           ;; This is a special buffer's frame
1428           (iconify-frame (selected-frame))
1429         (or (window-dedicated-p (selected-window))
1430             (bury-buffer)))
1431       (select-window owindow))
1432     (choose-completion-string choice buffer base-size)))
1433 \f
1434 ;; Font selection.
1435
1436 (defun font-menu-add-default ()
1437   (let* ((default (cdr (assq 'font (frame-parameters (selected-frame)))))
1438          (font-alist x-fixed-font-alist)
1439          (elt (or (assoc "Misc" font-alist) (nth 1 font-alist))))
1440     (if (assoc "Default" elt)
1441         (delete (assoc "Default" elt) elt))
1442     (setcdr elt
1443             (cons (list "Default"
1444                         (cdr (assq 'font (frame-parameters (selected-frame)))))
1445                   (cdr elt)))))
1446
1447 (defvar x-fixed-font-alist
1448   '("Font menu"
1449     ("Misc"
1450      ;; For these, we specify the pixel height and width.
1451      ("fixed" "fixed")
1452      ("6x10" "-misc-fixed-medium-r-normal--10-*-*-*-c-60-iso8859-1" "6x10")
1453      ("6x12"
1454       "-misc-fixed-medium-r-semicondensed--12-*-*-*-c-60-iso8859-1" "6x12")
1455      ("6x13"
1456       "-misc-fixed-medium-r-semicondensed--13-*-*-*-c-60-iso8859-1" "6x13")
1457      ("7x13" "-misc-fixed-medium-r-normal--13-*-*-*-c-70-iso8859-1" "7x13")
1458      ("7x14" "-misc-fixed-medium-r-normal--14-*-*-*-c-70-iso8859-1" "7x14")
1459      ("8x13" "-misc-fixed-medium-r-normal--13-*-*-*-c-80-iso8859-1" "8x13")
1460      ("9x15" "-misc-fixed-medium-r-normal--15-*-*-*-c-90-iso8859-1" "9x15")
1461      ("10x20" "-misc-fixed-medium-r-normal--20-*-*-*-c-100-iso8859-1" "10x20")
1462      ("11x18" "-misc-fixed-medium-r-normal--18-*-*-*-c-110-iso8859-1" "11x18")
1463      ("12x24" "-misc-fixed-medium-r-normal--24-*-*-*-c-120-iso8859-1" "12x24")
1464      ("")
1465      ("clean 5x8"
1466       "-schumacher-clean-medium-r-normal--8-*-*-*-c-50-iso8859-1")
1467      ("clean 6x8"
1468       "-schumacher-clean-medium-r-normal--8-*-*-*-c-60-iso8859-1")
1469      ("clean 8x8"
1470       "-schumacher-clean-medium-r-normal--8-*-*-*-c-80-iso8859-1")
1471      ("clean 8x10"
1472       "-schumacher-clean-medium-r-normal--10-*-*-*-c-80-iso8859-1")
1473      ("clean 8x14"
1474       "-schumacher-clean-medium-r-normal--14-*-*-*-c-80-iso8859-1")
1475      ("clean 8x16"
1476       "-schumacher-clean-medium-r-normal--16-*-*-*-c-80-iso8859-1")
1477      ("")
1478      ("sony 8x16" "-sony-fixed-medium-r-normal--16-*-*-*-c-80-iso8859-1"))
1479 ;;; We don't seem to have these; who knows what they are.
1480 ;;;    ("fg-18" "fg-18")
1481 ;;;    ("fg-25" "fg-25")
1482 ;;;    ("lucidasanstypewriter-12" "lucidasanstypewriter-12")
1483 ;;;    ("lucidasanstypewriter-bold-14" "lucidasanstypewriter-bold-14")
1484 ;;;    ("lucidasanstypewriter-bold-24" "lucidasanstypewriter-bold-24")
1485 ;;;    ("lucidatypewriter-bold-r-24" "-b&h-lucidatypewriter-bold-r-normal-sans-24-240-75-75-m-140-iso8859-1")
1486 ;;;    ("fixed-medium-20" "-misc-fixed-medium-*-*-*-20-*-*-*-*-*-*-*")
1487     ("Courier"
1488      ;; For these, we specify the point height.
1489      ("8" "-adobe-courier-medium-r-normal--*-80-*-*-m-*-iso8859-1")
1490      ("10" "-adobe-courier-medium-r-normal--*-100-*-*-m-*-iso8859-1")
1491      ("12" "-adobe-courier-medium-r-normal--*-120-*-*-m-*-iso8859-1")
1492      ("14" "-adobe-courier-medium-r-normal--*-140-*-*-m-*-iso8859-1")
1493      ("18" "-adobe-courier-medium-r-normal--*-180-*-*-m-*-iso8859-1")
1494      ("24" "-adobe-courier-medium-r-normal--*-240-*-*-m-*-iso8859-1")
1495      ("8 bold" "-adobe-courier-bold-r-normal--*-80-*-*-m-*-iso8859-1")
1496      ("10 bold" "-adobe-courier-bold-r-normal--*-100-*-*-m-*-iso8859-1")
1497      ("12 bold" "-adobe-courier-bold-r-normal--*-120-*-*-m-*-iso8859-1")
1498      ("14 bold" "-adobe-courier-bold-r-normal--*-140-*-*-m-*-iso8859-1")
1499      ("18 bold" "-adobe-courier-bold-r-normal--*-180-*-*-m-*-iso8859-1")
1500      ("24 bold" "-adobe-courier-bold-r-normal--*-240-*-*-m-*-iso8859-1")
1501      ("8 slant" "-adobe-courier-medium-o-normal--*-80-*-*-m-*-iso8859-1")
1502      ("10 slant" "-adobe-courier-medium-o-normal--*-100-*-*-m-*-iso8859-1")
1503      ("12 slant" "-adobe-courier-medium-o-normal--*-120-*-*-m-*-iso8859-1")
1504      ("14 slant" "-adobe-courier-medium-o-normal--*-140-*-*-m-*-iso8859-1")
1505      ("18 slant" "-adobe-courier-medium-o-normal--*-180-*-*-m-*-iso8859-1")
1506      ("24 slant" "-adobe-courier-medium-o-normal--*-240-*-*-m-*-iso8859-1")
1507      ("8 bold slant" "-adobe-courier-bold-o-normal--*-80-*-*-m-*-iso8859-1")
1508      ("10 bold slant" "-adobe-courier-bold-o-normal--*-100-*-*-m-*-iso8859-1")
1509      ("12 bold slant" "-adobe-courier-bold-o-normal--*-120-*-*-m-*-iso8859-1")
1510      ("14 bold slant" "-adobe-courier-bold-o-normal--*-140-*-*-m-*-iso8859-1")
1511      ("18 bold slant" "-adobe-courier-bold-o-normal--*-180-*-*-m-*-iso8859-1")
1512      ("24 bold slant" "-adobe-courier-bold-o-normal--*-240-*-*-m-*-iso8859-1"))
1513     )
1514   "X fonts suitable for use in Emacs.")
1515
1516 (defun mouse-set-font (&rest fonts)
1517   "Select an emacs font from a list of known good fonts"
1518   (interactive
1519    (x-popup-menu last-nonmenu-event x-fixed-font-alist))
1520   (if fonts
1521       (let (font)
1522         (while fonts
1523           (condition-case nil
1524               (progn
1525                 (set-default-font (car fonts))
1526                 (setq font (car fonts))
1527                 (setq fonts nil))
1528             (error
1529              (setq fonts (cdr fonts)))))
1530         (if (null font)
1531             (error "Font not found")))))
1532 \f
1533 ;;; Bindings for mouse commands.
1534
1535 (define-key global-map [down-mouse-1] 'mouse-drag-region)
1536 (global-set-key [mouse-1]       'mouse-set-point)
1537 (global-set-key [drag-mouse-1]  'mouse-set-region)
1538
1539 ;; These are tested for in mouse-drag-region.
1540 (global-set-key [double-mouse-1] 'mouse-set-point)
1541 (global-set-key [triple-mouse-1] 'mouse-set-point)
1542
1543 (global-set-key [mouse-2]       'mouse-yank-at-click)
1544 (global-set-key [mouse-3]       'mouse-save-then-kill)
1545
1546 ;; By binding these to down-going events, we let the user use the up-going
1547 ;; event to make the selection, saving a click.
1548 (global-set-key [C-down-mouse-1] 'mouse-set-font)
1549 ;; C-down-mouse-2 is bound in facemenu.el.
1550 (global-set-key [C-down-mouse-3] 'mouse-major-mode-menu)
1551
1552
1553 ;; Replaced with dragging mouse-1
1554 ;; (global-set-key [S-mouse-1]  'mouse-set-mark)
1555
1556 (global-set-key [mode-line mouse-1] 'mouse-select-window)
1557 (global-set-key [mode-line drag-mouse-1] 'mouse-select-window)
1558 (global-set-key [mode-line down-mouse-1] 'mouse-drag-mode-line)
1559 (global-set-key [mode-line mouse-2] 'mouse-delete-other-windows)
1560 (global-set-key [mode-line mouse-3] 'mouse-delete-window)
1561 (global-set-key [mode-line C-mouse-2] 'mouse-split-window-horizontally)
1562 (global-set-key [vertical-scroll-bar C-mouse-2] 'mouse-split-window-vertically)
1563 (global-set-key [vertical-line C-mouse-2] 'mouse-split-window-vertically)
1564
1565 (provide 'mouse)
1566
1567 ;;; mouse.el ends here