| blob | b71df57556cbc428f8019f8aaf5328fe82d5642d |
1 ;;; mouse.el --- window system-independent mouse support
3 ;; Copyright (C) 1993, 1994, 1995, 1999, 2000, 2001, 2002, 2003, 2004,
4 ;; 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
6 ;; Maintainer: FSF
7 ;; Keywords: hardware, mouse
8 ;; Package: emacs
10 ;; This file is part of GNU Emacs.
12 ;; GNU Emacs is free software: you can redistribute it and/or modify
13 ;; it under the terms of the GNU General Public License as published by
14 ;; the Free Software Foundation, either version 3 of the License, or
15 ;; (at your option) any later version.
17 ;; GNU Emacs is distributed in the hope that it will be useful,
18 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
19 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 ;; GNU General Public License for more details.
22 ;; You should have received a copy of the GNU General Public License
23 ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
25 ;;; Commentary:
27 ;; This package provides various useful commands (including help
28 ;; system access) through the mouse. All this code assumes that mouse
29 ;; interpretation has been abstracted into Emacs input events.
30 ;;
31 ;; The code is rather X-dependent.
33 ;;; Code:
35 ;;; Utility functions.
37 ;; Indent track-mouse like progn.
41 "If non-nil, mouse yank commands yank at point instead of at click."
46 "If non-nil, copy to kill-ring upon mouse adjustments of the region.
49 addition to mouse drags."
55 "Non-nil means that clicking Mouse-1 on a link follows the link.
57 With the default setting, an ordinary Mouse-1 click on a link
58 performs the same action as Mouse-2 on that link, while a longer
59 Mouse-1 click \(hold down the Mouse-1 button for more than 450
60 milliseconds) performs the original Mouse-1 binding \(which
61 typically sets point where you click the mouse).
63 If value is an integer, the time elapsed between pressing and
64 releasing the mouse button determines whether to follow the link
65 or perform the normal Mouse-1 action (typically set point).
66 The absolute numeric value specifices the maximum duration of a
68 short click follows the link, and a longer click performs the
69 normal action. A negative value gives the opposite behavior.
71 If value is `double', a double click follows the link.
73 Otherwise, a single Mouse-1 click unconditionally follows the link.
75 Note that dragging the mouse never follows the link.
77 This feature only works in modes that specifically identify
78 clickable text as links, so it may not work with some external
79 packages. See `mouse-on-link-p' for details."
88 "If non-nil, a Mouse-1 click also follows links in non-selected windows.
90 If nil, a Mouse-1 click on a link in a non-selected window performs
91 the normal mouse-1 binding, typically selects the window and sets
92 point at the click position."
98 \f
99 ;; Provide a mode-specific menu on a mouse button.
102 "Popup the given menu and call the selected option.
103 MENU can be a keymap, an easymenu-style menu or a list of keymaps as for
104 `x-popup-menu'.
105 POSITION can be a click event or ((XOFFSET YOFFSET) WINDOW) and defaults to
106 the current mouse position.
107 PREFIX is the prefix argument (if any) to pass to the command."
115 event cmd)
119 ;; The looping behavior was taken from lmenu's popup-menu-popup
121 ;; map could be a prefix key, in which case
122 ;; we need to get its function cell
123 ;; definition.
125 ;; Strangely x-popup-menu returns a list.
126 ;; mouse-major-mode-menu was using a weird:
127 ;; (key-binding (apply 'vector (append '(menu-bar) menu-prefix events)))
130 ;; We were given a list of keymaps. Search them all
131 ;; in sequence until a first binding is found.
133 binding)
139 binding)
140 ;; We were given a single keymap.
142 ;; Clear out echoing, which perhaps shows a prefix arg.
144 ;; Maybe try again but with the submap.
146 ;; If the user did not cancel by refusing to select,
147 ;; and if the result is a command, run it.
150 ;; `setup-specified-language-environment', for instance,
151 ;; expects this to be set from a menu keymap.
153 ;; mouse-major-mode-menu was using `command-execute' instead.
157 "Show menu for minor mode specified by INDICATOR.
158 Interactively, INDICATOR is read using completion.
159 If there is no menu defined for the minor mode, then create one with
160 items `Turn Off' and `Help'."
163 "Minor mode indicator: "
174 ,indicator
182 "Show minor-mode menu for EVENT on minor modes area of the mode line."
192 ;; Make a keymap in which our last command leads to a menu or
193 ;; default to the edit menu.
197 menu-bar-edit-menu))
198 uniq)
201 newmap))
204 "Given menu keymap,
205 if it defines exactly one submenu, return just that submenu.
206 Otherwise return the whole menu."
213 menubar
217 "Return a keymap equivalent to the menu bar.
218 The contents are the items that would be in the menu bar whether or
219 not it is actually displayed."
223 ;; If a keymap doesn't have a prompt string (a lazy
224 ;; programmer didn't bother to provide one), create it and
225 ;; insert it into the keymap; each keymap gets its own
226 ;; prompt. This is required for non-toolkit versions to
227 ;; display non-empty menu pane names.
240 minor-mode)))
243 menu))
257 ;; Supplying the list is faster than making a new map.
258 ;; FIXME: We have a problem here: we have to use the global/local/minor
259 ;; so they're displayed in the expected order, but later on in the command
260 ;; loop, they're actually looked up in the opposite order.
262 global-menu
263 local-menu
264 minor-mode-menus)))
267 "Pop up a mode-specific menu of mouse commands.
268 Default to the Edit menu if the major mode doesn't define a menu."
275 "Pop up a menu equivalent to the menu bar for keyboard EVENT with PREFIX.
276 The contents are the items that would be in the menu bar whether or
277 not it is actually displayed."
284 "Popup a menu like either `mouse-major-mode-menu' or `mouse-popup-menubar'.
285 Use the former if the menu bar is showing, otherwise the latter."
292 event prefix))
294 \f
295 ;; Commands that operate on windows.
302 ;; Give temporary modes such as isearch a chance to turn off.
306 "Delete the window you click on.
307 Do nothing if the frame has just one window.
308 This command must be bound to a mouse click."
315 "Select the window clicked on; don't move point."
327 "Delete the window clicked on, and create a new frame displaying its buffer."
338 "Delete all windows except the one you click on."
343 "Select Emacs window mouse is on, then split it vertically in half.
344 The window is split at the line clicked on.
345 This command must be bound to a mouse click."
359 "Select Emacs window mouse is on, then split it horizontally in half.
360 The window is split at the column clicked on.
361 This command must be bound to a mouse click."
375 "Return the (or a) window directly above WINDOW.
376 That means one whose bottom edge is at the same height as WINDOW's top edge."
381 above-window)
387 start-top)
393 above-window))
396 "Move the bottom of WINDOW up or down by GROWTH lines.
397 Move it down if GROWTH is positive, or up if GROWTH is negative.
398 If this would make WINDOW too short,
399 shrink the window or windows above it to make room."
405 "Move the top of WINDOW up or down by GROWTH lines.
406 Move it down if GROWTH is positive, or up if GROWTH is negative.
407 If this would make WINDOW too short, shrink the window or windows
408 above it to make room."
409 ;; Moving the top of WINDOW is actually moving the bottom of the
410 ;; window above.
416 "Change the height of a window by dragging on the mode or header line.
417 START-EVENT is the starting mouse-event of the drag action.
418 MODE-LINE-P non-nil means dragging a mode line; nil means a header line."
419 ;; Give temporary modes such as isearch a chance to turn off.
432 should-enlarge-minibuffer event mouse y top bot edges wconfig growth)
435 ;; if this is the bottommost ordinary window, then to
436 ;; move its modeline the minibuffer must be enlarged.
439 mode-line-p
444 ;; loop reading events and sampling the position of
445 ;; the mouse.
450 ;; do nothing if
451 ;; - there is a switch-frame event.
452 ;; - the mouse isn't in the frame that we started in
453 ;; - the mouse isn't in any Emacs frame
454 ;; drag if
455 ;; - there is a mouse-movement event
456 ;; - there is a scroll-bar-movement event
457 ;; (same as mouse movement for our purposes)
458 ;; quit if
459 ;; - there is a keyboard event or some other unknown event.
464 nil)
468 ;; Do not unread a drag-mouse-1 event since it will cause the
469 ;; selection of the window above when dragging the modeline
470 ;; above the selected window.
476 nil)
479 nil)
487 ;; compute size change needed
493 ;; The window's top includes the header line!
497 ;; Check for an error case.
503 ;; If we ever move, make sure we don't mistakenly treat
504 ;; some unexpected `mouse-1' final event as a sign that
505 ;; this whole drag was nothing more than a click.
508 ;; grow/shrink minibuffer?
512 ;; no. grow/shrink the selected window
513 ;(message "growth = %d" growth)
518 ;; if this window's growth caused another
519 ;; window to be deleted because it was too
520 ;; short, rescind the change.
521 ;;
522 ;; if size change caused space to be stolen
523 ;; from a window above this one, rescind the
524 ;; change, but only if we didn't grow/shrink
525 ;; the minibuffer. minibuffer size changes
526 ;; can cause all windows to shrink... no way
527 ;; around it.
531 mode-line-p
532 (/= top
534 ;; Choose right window.
535 start-event-window)))))
538 ;; Presumably if this was just a click, the last event should
539 ;; be `mouse-1', whereas if this did move the mouse, it should be
540 ;; a `drag-mouse-1'. In any case `on-link' would have been nulled
541 ;; above if there had been any significant mouse movement.
546 "Change the height of a window by dragging on the mode line."
551 "Change the height of a window by dragging on the header line.
552 Windows whose header-lines are at the top of the frame cannot be
553 resized by dragging their header-line."
555 ;; Changing the window's size by dragging its header-line when the
556 ;; header-line is at the top of the frame is somewhat strange,
557 ;; because the header-line doesn't move, so don't do it.
567 \f
569 "Return a window that is immediately to the right of WINDOW, or nil."
572 best best-right
584 best))
587 "Change the width of a window by dragging on the vertical line."
589 ;; Give temporary modes such as isearch a chance to turn off.
595 event mouse x left right edges growth
611 ;; loop reading events and sampling the position of
612 ;; the mouse.
616 ;; do nothing if
617 ;; - there is a switch-frame event.
618 ;; - the mouse isn't in the frame that we started in
619 ;; - the mouse isn't in any Emacs frame
620 ;; drag if
621 ;; - there is a mouse-movement event
622 ;; - there is a scroll-bar-movement event
623 ;; (same as mouse movement for our purposes)
624 ;; quit if
625 ;; - there is a keyboard event or some other unknown event
626 ;; unknown event.
630 nil)
638 nil)
640 nil)
643 ;; If the scroll bar is on the window's left,
644 ;; adjust the window on the left.
646 start-event-window
648 start-event-window))))
654 ;; scale back a move that would make the
655 ;; window too thin.
658 ;; compute size change needed
663 \f
665 "Move point to the position clicked on with the mouse.
666 This should be bound to a mouse click event type."
669 ;; Use event-end in case called from mouse-drag-region.
670 ;; If EVENT is a click, event-end and event-start give same value.
678 "Return non-nil if there's an active region that was set with the mouse."
685 "Set the region to the text dragged over, and copy to kill ring.
686 This should be bound to a mouse drag event."
693 ;; Don't set this-command to `kill-region', so a following
694 ;; C-w won't double the text in the kill ring. Ignore
695 ;; `last-command' so we don't append to a preceding kill.
699 ;; On a text terminal, bounce the cursor.
709 ;; Set transient-mark-mode for a little while.
714 transient-mark-mode))))
720 "The pause between scroll steps caused by mouse drags, in seconds.
721 If you drag the mouse beyond the edge of a window, Emacs scrolls the
722 window to bring the text beyond that edge into view, with a delay of
723 this many seconds between scroll steps. Scrolling stops when you move
724 the mouse back into the window, or release the button.
725 This variable's value may be non-integral.
726 Setting this to zero causes Emacs to scroll as fast as it can."
731 "The minimum number of lines scrolled by dragging mouse out of window.
732 Moving the mouse out the top or bottom edge of the window begins
733 scrolling repeatedly. The number of lines scrolled per repetition
734 is normally equal to the number of lines beyond the window edge that
735 the mouse has moved. However, it always scrolls at least the number
736 of lines specified by this variable."
741 "Scroll the window WINDOW, JUMP lines at a time, until new input arrives.
742 If OVERLAY is an overlay, let it stretch from START to the far edge of
743 the newly visible text.
744 Upon exit, point is at the far edge of the newly visible text."
760 ;; window-end doesn't reflect the window's new
761 ;; start position until the next redisplay.
767 ;; Now that we have scrolled WINDOW properly,
768 ;; put point back where it was for the redisplay
769 ;; so that we don't mess up the selected window.
781 "Set the region to the text that the mouse is dragged over.
782 Highlight the drag area as you move the mouse.
783 This must be bound to a button-down mouse event.
784 In Transient Mark mode, the highlighting remains as long as the mark
785 remains active. Otherwise, it remains until the next input event.
787 If the click is in the echo area, display the `*Messages*' buffer."
793 ;; Swallow the up-event.
798 ;; Give temporary modes such as isearch a chance to turn off.
804 "Look for a property at click position.
805 POS may be either a buffer position or a click position like
806 those returned from `event-start'. If the click position is on
807 a string, the text property PROPERTY is examined.
808 If this is nil or the click is not on a string, then
809 the corresponding buffer position is searched for PROPERTY.
810 If PROPERTY is encountered in one of those places,
811 its value is returned."
822 "Return non-nil if POS is on a link in the current buffer.
823 POS must be a buffer position in the current buffer or a mouse
824 event location in the selected window (see `event-start').
825 However, if `mouse-1-click-in-non-selected-windows' is non-nil,
826 POS may be a mouse event location in any window.
828 A clickable link is identified by one of the following methods:
830 - If the character at POS has a non-nil `follow-link' text or
831 overlay property, the value of that property determines what to do.
833 - If there is a local key-binding or a keybinding at position POS
834 for the `follow-link' event, the binding of that event determines
835 what to do.
837 The resulting value determine whether POS is inside a link:
839 - If the value is `mouse-face', POS is inside a link if there
840 is a non-nil `mouse-face' property at POS. Return t in this case.
842 - If the value is a function, FUNC, POS is inside a link if
843 the call \(FUNC POS) returns non-nil. Return the return value
844 from that call. Arg is \(posn-point POS) if POS is a mouse event.
846 - Otherwise, return the value itself.
848 The return value is interpreted as follows:
850 - If it is a string, the mouse-1 event is translated into the
851 first character of the string, i.e. the action of the mouse-1
852 click is the local or global binding of that character.
854 - If it is a vector, the mouse-1 event is translated into the
855 first element of that vector, i.e. the action of the mouse-1
856 click is the local or global binding of that event.
858 - Otherwise, the mouse-1 event is translated into a mouse-2 event
859 at the same position."
862 mouse-1-click-in-non-selected-windows
870 ;; FIXME: This seems questionable if the click is not in a buffer.
871 ;; Should we instead decide that `action' takes a `posn'?
879 "Fix help message MSG for `mouse-1-click-follows-link'."
899 msg)
902 do-mouse-drag-region-post-process)
903 "Track mouse drags by highlighting area between point and cursor.
904 The region will be defined with mark and point.
905 DO-MOUSE-DRAG-REGION-POST-PROCESS should only be used by
906 `mouse-drag-region'."
911 ;; We've recorded what we needed from the current buffer and
912 ;; window, now let's jump to the place of the event, where things
913 ;; are happening.
926 ;; Don't count the mode line.
931 ;; Use start-point before the intangibility
932 ;; treatment, in case we click on a link inside an
933 ;; intangible text.
939 ;; Suppress automatic hscrolling, because that is a nuisance
940 ;; when setting point near the right fringe (but see below).
943 event end end-point)
946 ;; In case the down click is in the middle of some intangible text,
947 ;; use the end of that text, and put it in START-POINT.
954 ;; Activate the region, using `mouse-start-end' to determine where
955 ;; to put point and mark (e.g., double-click will select a word).
964 ;; Track the mouse until we get a non-movement event.
971 ;; Automatic hscrolling did not occur during the call to
972 ;; `read-event'; but if the user subsequently drags the
973 ;; mouse, go ahead and hscroll.
981 end-point click-count)
987 nil start-point))
990 nil start-point))))))))
992 ;; Handle the terminating event if possible.
994 ;; Ensure that point is on the end of the last event.
1000 end-point click-count))
1002 ;; Find its binding.
1007 mouse-set-region))))))
1011 ;; If point has moved, finish the drag.
1014 do-mouse-drag-region-post-process
1018 ;; If point hasn't moved, run the binding of the
1019 ;; terminating up-event.
1025 ;; Don't run the up-event handler if the window
1026 ;; start changed in a redisplay after the
1027 ;; mouse-set-point for the down-mouse event at
1028 ;; the beginning of this function. When the
1029 ;; window start has changed, the up-mouse event
1030 ;; contains a different position due to the new
1031 ;; window contents, and point is set again.
1034 start-window-start)))
1038 ;; If we rebind to mouse-2, reselect previous selected
1039 ;; window, so that the mouse-2 event runs in the same
1040 ;; situation as if user had clicked it directly. Fixes
1041 ;; the bug reported by juri@jurta.org on 2005-12-27.
1046 ;; If this mouse click has never been done by the
1047 ;; user, it doesn't have the necessary property to be
1048 ;; interpreted correctly.
1082 \f
1083 ;; Commands to handle xterm-style multiple clicks.
1085 "Skip over word, over whitespace, or over identical punctuation.
1086 If DIR is positive skip forward; if negative, skip backward."
1090 ;; Here, we can't use skip-syntax-forward/backward because
1091 ;; they don't pay attention to word-separating-categories,
1092 ;; and thus they will skip over a true word boundary. So,
1093 ;; we simulate the original behavior by using forward-word.
1115 "Return a list of region bounds based on START and END according to MODE.
1116 If MODE is 0 then set point to (min START END), mark to (max START END).
1117 If MODE is 1 then set point to start of word at (min START END),
1118 mark to end of word at (max START END).
1119 If MODE is 2 then do the same for lines."
1123 end temp)))
1187 \f
1188 ;; Subroutine: set the mark where CLICK happened,
1189 ;; but don't do anything else.
1206 ;; Use reverse, not nreverse, since event-modifiers
1207 ;; does not copy the list it returns.
1210 event)))
1214 t
1216 nil)))
1218 ;; Momentarily show where the mark is, if highlighting doesn't show it.
1221 "Set mark at the position clicked on with the mouse.
1222 Display cursor at that position for a second.
1223 This must be bound to a mouse click."
1227 ;; We don't use save-excursion because that preserves the mark too.
1237 "Kill the region between point and the mouse click.
1249 "Insert the last stretch of killed text at the position clicked on.
1250 Also move point to one end of the text thus inserted (normally the end),
1251 and set mark at the beginning.
1253 If `mouse-yank-at-point' is non-nil, insert at point
1254 regardless of where you click."
1256 ;; Give temporary modes such as isearch a chance to turn off.
1259 ;; Without this, confusing things happen upon e.g. inserting into
1260 ;; the middle of an active region.
1268 "Insert the primary selection at the position clicked on.
1269 Move point to the end of the inserted text.
1270 If `mouse-yank-at-point' is non-nil, insert at point
1271 regardless of where you click."
1273 ;; Give temporary modes such as isearch a chance to turn off.
1275 ;; Without this, confusing things happen upon e.g. inserting into
1276 ;; the middle of an active region.
1286 ;; FIXME: What about xterm-mouse-mode etc.?
1294 "Copy the region between point and the mouse click in the kill ring.
1301 ;; This function used to delete the text between point and the mouse
1302 ;; whenever it was equal to the front of the kill ring, but some
1303 ;; people found that confusing.
1305 ;; The position of the last invocation of `mouse-save-then-kill'.
1309 ;; We must make our own undo boundaries
1310 ;; because they happen automatically only for the current buffer.
1313 ;; If we have no undo list in this buffer,
1314 ;; just delete.
1316 ;; Delete, but make the undo-list entry share with the kill ring.
1317 ;; First, delete just one char, so in case buffer is being modified
1318 ;; for the first time, the undo list records that fact.
1323 ;; Undo that deletion--but don't change the undo list!
1326 ;; Now delete the rest of the specified region,
1327 ;; but don't record it.
1333 ;; Search back in buffer-undo-list for the string
1334 ;; that came from deleting one character.
1337 ;; Replace it with an entry for the entire deleted text.
1343 "Set the region according to CLICK; the second time, kill it.
1344 CLICK should be a mouse click event.
1346 If the region is inactive, activate it temporarily. Set mark at
1347 the original point, and move point to the position of CLICK.
1349 If the region is already active, adjust it. Normally, do this by
1350 moving point or mark, whichever is closer, to CLICK. But if you
1351 have selected whole words or lines, move point or mark to the
1352 word or line boundary closest to CLICK instead.
1354 If `mouse-drag-copy-region' is non-nil, this command also saves the
1355 new region to the kill ring (replacing the previous kill if the
1356 previous region was just saved to the kill ring).
1358 If this command is called a second consecutive time with the same
1359 CLICK position, kill the region (or delete it
1360 if `mouse-drag-copy-region' is non-nil)"
1367 ;; Don't let a subsequent kill command append to this one.
1369 ;; Check if the user has multi-clicked to select words/lines.
1373 mouse-selection-click-count
1377 ;; If the user clicked without moving point, kill the region.
1378 ;; This also resets `mouse-selection-click-count'.
1383 ;; Region already saved in the previous click;
1384 ;; don't make a duplicate entry, just delete.
1390 ;; Otherwise, if there is a suitable region, adjust it by moving
1391 ;; one end (whichever is closer) to CLICK-PT.
1396 mouse-save-then-kill-posn)
1398 mouse-set-region))
1410 ;; Region already copied to kill-ring once, so replace.
1412 ;; Arrange for a repeated mouse-3 to kill the region.
1415 ;; Otherwise, set the mark where point is and move to CLICK-PT.
1427 \f
1438 ol)
1439 "An overlay which records the current secondary selection.
1444 ;; A marker which records the specified first end for a secondary selection.
1445 ;; May be nil.
1449 "Set one end of the secondary selection to the position clicked on.
1451 and complete the secondary selection."
1456 ;; Cancel any preexisting secondary selection.
1465 "Set the secondary selection to the text that the mouse is dragged over.
1466 This must be bound to a mouse drag event."
1470 beg
1477 'SECONDARY
1482 "Set the secondary selection to the text that the mouse is dragged over.
1483 Highlight the drag area as you move the mouse.
1484 This must be bound to a button-down mouse event.
1485 The function returns a non-nil value if it creates a secondary selection."
1496 ;; Don't count the mode line.
1502 ;; Double or triple press: make an initial selection
1503 ;; of one word or line.
1508 ;; Single-press: cancel any preexisting secondary selection.
1521 nil
1525 ;; Are we moving within the original window?
1529 click-count)))
1542 mouse-secondary-overlay start-point))
1545 mouse-secondary-overlay start-point)))))))))
1556 nil))
1558 'SECONDARY
1563 "Insert the secondary selection at the position clicked on.
1564 Move point to the end of the inserted text.
1565 If `mouse-yank-at-point' is non-nil, insert at point
1566 regardless of where you click."
1568 ;; Give temporary modes such as isearch a chance to turn off.
1577 "Kill the text in the secondary selection.
1578 This is intended more as a keyboard command than as a mouse command
1579 but it can work as either one.
1581 The current buffer (in case of keyboard use), or the buffer clicked on,
1582 must be the one that the secondary selection is in. This requirement
1583 is to prevent accidents."
1599 "Set the secondary selection and save it to the kill ring.
1600 The second time, kill it. CLICK should be a mouse click event.
1602 If you have not called `mouse-start-secondary' in the clicked
1603 buffer, activate the secondary selection and set it between point
1604 and the click position CLICK.
1606 Otherwise, adjust the bounds of the secondary selection.
1607 Normally, do this by moving its beginning or end, whichever is
1608 closer, to CLICK. But if you have selected whole words or lines,
1609 adjust to the word or line boundary closest to CLICK instead.
1611 If this command is called a second consecutive time with the same
1612 CLICK position, kill the secondary selection."
1619 ;; Don't let a subsequent kill command append to this one.
1621 ;; Check if the user has multi-clicked to select words/lines.
1624 mouse-secondary-click-count
1632 ;; If the secondary selection is not active in BUF, activate it.
1642 ;; If the user clicked without moving point, delete the secondary
1643 ;; selection. This also resets `mouse-secondary-click-count'.
1652 ;; Otherwise, if there is a suitable secondary selection overlay,
1653 ;; adjust it by moving one end (whichever is closer) to CLICK-PT.
1662 ;; If the front of the kill ring comes from an immediately
1663 ;; previous use of this command, replace the entry.
1667 t)
1673 ;; Otherwise, set the secondary selection overlay.
1677 ;; All we have is one end of a selection, so put the other
1678 ;; end here.
1684 ;; Finally, set the window system's secondary selection.
1692 \f
1694 "Number of buffers in one pane (submenu) of the buffer menu.
1695 If we have lots of buffers, divide them into groups of
1696 `mouse-buffer-menu-maxlen' and make a pane (or submenu) for each one."
1703 will split the buffer menu by the major modes (see
1704 `mouse-buffer-menu-mode-groups') or just by menu length.
1705 Set to 1 (or even 0!) if you want to group by major mode always, and to
1706 a large number if you prefer a mixed multitude. The default is 4."
1724 Each element has the form (REGEXP . GROUPNAME).
1728 "Pop up a menu of buffers for selection with the mouse.
1729 This switches buffers in the window that you clicked on,
1730 and selects that window."
1734 ;; Make an alist of elements that look like (MENU-ITEM . BUFFER).
1736 ;; Divide all buffers into buckets for various major modes.
1737 ;; Each bucket looks like (MODE NAMESTRING BUFFERS...).
1747 adjusted-major-mode
1752 ;; Compute the sum of squares of sizes of the major-mode buckets.
1757 (+ sum-of-squares
1762 ;; Subdividing by major modes really helps, so let's do it.
1764 ;; Sort the list to put the most popular major modes first.
1769 ;; Make a separate submenu for each major mode
1770 ;; that has more than one buffer,
1771 ;; unless all the remaining buffers are less than 1/10 of them.
1781 this-mode-list)
1782 subdivided-menus))))
1786 ;; If any major modes are left over,
1787 ;; make a single submenu for them.
1791 ;; we don't need split-by-major-mode any more,
1792 ;; so we can ditch it with nconc.
1797 subdivided-menus)))))
1808 window))
1814 head)
1843 list-buffers-directory)))
1845 elt)
1846 head))))
1848 ;; Compensate for the reversal that the above loop does.
1852 ;; If we have lots of buffers, divide them into groups of 20
1853 ;; and make a pane (or submenu) for each one.
1858 ;; Pull off the next mouse-buffer-menu-maxlen buffers
1859 ;; and make them the next element of sublist.
1863 nil))
1865 sublists))
1869 ;; Few buffers--put them all in one pane.
1871 \f
1875 ;; Font selection.
1894 ;; For these, we specify the pixel height and width.
1923 ;; We don't seem to have these; who knows what they are.
1924 ;; ("fg-18" "fg-18")
1925 ;; ("fg-25" "fg-25")
1926 ("lucidasanstypewriter-12" "-b&h-lucidatypewriter-medium-r-normal-sans-*-120-*-*-*-*-iso8859-1")
1927 ("lucidasanstypewriter-bold-14" "-b&h-lucidatypewriter-bold-r-normal-sans-*-140-*-*-*-*-iso8859-1")
1930 ;; ("lucidatypewriter-bold-r-24" "-b&h-lucidatypewriter-bold-r-normal-sans-24-240-75-75-m-140-iso8859-1")
1931 ;; ("fixed-medium-20" "-misc-fixed-medium-*-*-*-20-*-*-*-*-*-*-*")
1932 )))
1938 ;; For these, we specify the point height.
1963 ))))
1969 "Prompt for a font name, using `x-popup-menu', and return it."
1976 last-nonmenu-event
1984 "Set the default font for the selected frame.
1985 The argument FONTS is a list of font names; the first valid font
1986 in this list is used.
1988 When called interactively, pop up a menu and allow the user to
1989 choose a font."
1995 last-nonmenu-event
1997 ;; Append list of fontsets currently defined.
2019 "Show a menu for changing the default face in the current buffer."
2025 nil ; regenerate new fonts
2026 ;; Initialize mouse-appearance-menu-map
2035 ;; Font selector
2039 ;; If the select-font is unavailable, construct a menu.
2048 font-symbol)
2051 '("--"))
2052 (setq font-symbol (intern (cadr font)))
2053 (define-key submenu-map (vector font-symbol)
2054 (list 'menu-item (car font) font-symbol)))))
2055 (define-key font-submenu (vector (intern submenu-name))
2056 (list 'menu-item submenu-name submenu-map))))
2057 (define-key mouse-appearance-menu-map [font-submenu]
2058 (list 'menu-item "Change Text Font" font-submenu)))))
2059 (let ((choice (x-popup-menu event mouse-appearance-menu-map)))
2060 (setq choice (nth (1- (length choice)) choice))
2061 (cond ((eq choice 'text-scale-increase)
2062 (text-scale-increase 1))
2063 ((eq choice 'text-scale-decrease)
2064 (text-scale-increase -1))
2065 ((eq choice 'face-remap-reset-base)
2066 (text-scale-mode 0)
2067 (buffer-face-mode 0))
2068 (choice
2069 ;; Either choice == 'x-select-font, or choice is a
2070 ;; symbol whose name is a font.
2071 (buffer-face-mode-invoke (font-face-attributes
2072 (if (eq choice 'x-select-font)
2073 (x-select-font)
2074 (symbol-name choice)))
2075 t
2076 (called-interactively-p 'interactive))))))))
2078 \f
2079 ;;; Bindings for mouse commands.
2081 (define-key global-map [down-mouse-1] 'mouse-drag-region)
2082 (global-set-key [mouse-1] 'mouse-set-point)
2083 (global-set-key [drag-mouse-1] 'mouse-set-region)
2085 ;; These are tested for in mouse-drag-region.
2086 (global-set-key [double-mouse-1] 'mouse-set-point)
2087 (global-set-key [triple-mouse-1] 'mouse-set-point)
2089 ;; Clicking on the fringes causes hscrolling:
2090 (global-set-key [left-fringe mouse-1] 'mouse-set-point)
2091 (global-set-key [right-fringe mouse-1] 'mouse-set-point)
2093 (global-set-key [mouse-2] 'mouse-yank-primary)
2094 ;; Allow yanking also when the corresponding cursor is "in the fringe".
2095 (global-set-key [right-fringe mouse-2] 'mouse-yank-at-click)
2096 (global-set-key [left-fringe mouse-2] 'mouse-yank-at-click)
2097 (global-set-key [mouse-3] 'mouse-save-then-kill)
2098 (global-set-key [right-fringe mouse-3] 'mouse-save-then-kill)
2099 (global-set-key [left-fringe mouse-3] 'mouse-save-then-kill)
2101 ;; By binding these to down-going events, we let the user use the up-going
2102 ;; event to make the selection, saving a click.
2103 (global-set-key [C-down-mouse-1] 'mouse-buffer-menu)
2104 (if (not (eq system-type 'ms-dos))
2105 (global-set-key [S-down-mouse-1] 'mouse-appearance-menu))
2106 ;; C-down-mouse-2 is bound in facemenu.el.
2107 (global-set-key [C-down-mouse-3]
2108 `(menu-item ,(purecopy "Menu Bar") ignore
2109 :filter (lambda (_)
2110 (if (zerop (or (frame-parameter nil 'menu-bar-lines) 0))
2111 (mouse-menu-bar-map)
2112 (mouse-menu-major-mode-map)))))
2114 ;; Binding mouse-1 to mouse-select-window when on mode-, header-, or
2115 ;; vertical-line prevents Emacs from signaling an error when the mouse
2116 ;; button is released after dragging these lines, on non-toolkit
2117 ;; versions.
2118 (global-set-key [mode-line mouse-1] 'mouse-select-window)
2119 (global-set-key [mode-line drag-mouse-1] 'mouse-select-window)
2120 (global-set-key [mode-line down-mouse-1] 'mouse-drag-mode-line)
2121 (global-set-key [header-line down-mouse-1] 'mouse-drag-header-line)
2122 (global-set-key [header-line mouse-1] 'mouse-select-window)
2123 (global-set-key [mode-line mouse-2] 'mouse-delete-other-windows)
2124 (global-set-key [mode-line mouse-3] 'mouse-delete-window)
2125 (global-set-key [mode-line C-mouse-2] 'mouse-split-window-horizontally)
2126 (global-set-key [vertical-scroll-bar C-mouse-2] 'mouse-split-window-vertically)
2127 (global-set-key [vertical-line C-mouse-2] 'mouse-split-window-vertically)
2128 (global-set-key [vertical-line down-mouse-1] 'mouse-drag-vertical-line)
2129 (global-set-key [vertical-line mouse-1] 'mouse-select-window)
2131 (provide 'mouse)
2133 ;; arch-tag: 9a710ce1-914a-4923-9b81-697f7bf82ab3
2134 ;;; mouse.el ends here