| blob | 01f96e1ef86e12401afc72d247b6109d9c43b761 |
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, mouse drag copies region to kill-ring."
52 "Non-nil means that clicking Mouse-1 on a link follows the link.
54 With the default setting, an ordinary Mouse-1 click on a link
55 performs the same action as Mouse-2 on that link, while a longer
56 Mouse-1 click \(hold down the Mouse-1 button for more than 450
57 milliseconds) performs the original Mouse-1 binding \(which
58 typically sets point where you click the mouse).
60 If value is an integer, the time elapsed between pressing and
61 releasing the mouse button determines whether to follow the link
62 or perform the normal Mouse-1 action (typically set point).
63 The absolute numeric value specifices the maximum duration of a
65 short click follows the link, and a longer click performs the
66 normal action. A negative value gives the opposite behavior.
68 If value is `double', a double click follows the link.
70 Otherwise, a single Mouse-1 click unconditionally follows the link.
72 Note that dragging the mouse never follows the link.
74 This feature only works in modes that specifically identify
75 clickable text as links, so it may not work with some external
76 packages. See `mouse-on-link-p' for details."
85 "If non-nil, a Mouse-1 click also follows links in non-selected windows.
87 If nil, a Mouse-1 click on a link in a non-selected window performs
88 the normal mouse-1 binding, typically selects the window and sets
89 point at the click position."
95 \f
96 ;; Provide a mode-specific menu on a mouse button.
99 "Popup the given menu and call the selected option.
100 MENU can be a keymap, an easymenu-style menu or a list of keymaps as for
101 `x-popup-menu'.
102 POSITION can be a click event or ((XOFFSET YOFFSET) WINDOW) and defaults to
103 the current mouse position.
104 PREFIX is the prefix argument (if any) to pass to the command."
112 event cmd)
116 ;; The looping behavior was taken from lmenu's popup-menu-popup
118 ;; map could be a prefix key, in which case
119 ;; we need to get its function cell
120 ;; definition.
122 ;; Strangely x-popup-menu returns a list.
123 ;; mouse-major-mode-menu was using a weird:
124 ;; (key-binding (apply 'vector (append '(menu-bar) menu-prefix events)))
127 ;; We were given a list of keymaps. Search them all
128 ;; in sequence until a first binding is found.
130 binding)
136 binding)
137 ;; We were given a single keymap.
139 ;; Clear out echoing, which perhaps shows a prefix arg.
141 ;; Maybe try again but with the submap.
143 ;; If the user did not cancel by refusing to select,
144 ;; and if the result is a command, run it.
147 ;; `setup-specified-language-environment', for instance,
148 ;; expects this to be set from a menu keymap.
150 ;; mouse-major-mode-menu was using `command-execute' instead.
154 "Show menu for minor mode specified by INDICATOR.
155 Interactively, INDICATOR is read using completion.
156 If there is no menu defined for the minor mode, then create one with
157 items `Turn Off' and `Help'."
160 "Minor mode indicator: "
171 ,indicator
179 "Show minor-mode menu for EVENT on minor modes area of the mode line."
189 ;; Make a keymap in which our last command leads to a menu or
190 ;; default to the edit menu.
194 menu-bar-edit-menu))
195 uniq)
198 newmap))
201 "Given menu keymap,
202 if it defines exactly one submenu, return just that submenu.
203 Otherwise return the whole menu."
210 menubar
214 "Return a keymap equivalent to the menu bar.
215 The contents are the items that would be in the menu bar whether or
216 not it is actually displayed."
220 ;; If a keymap doesn't have a prompt string (a lazy
221 ;; programmer didn't bother to provide one), create it and
222 ;; insert it into the keymap; each keymap gets its own
223 ;; prompt. This is required for non-toolkit versions to
224 ;; display non-empty menu pane names.
237 minor-mode)))
240 menu))
254 ;; Supplying the list is faster than making a new map.
255 ;; FIXME: We have a problem here: we have to use the global/local/minor
256 ;; so they're displayed in the expected order, but later on in the command
257 ;; loop, they're actually looked up in the opposite order.
259 global-menu
260 local-menu
261 minor-mode-menus)))
264 "Pop up a mode-specific menu of mouse commands.
265 Default to the Edit menu if the major mode doesn't define a menu."
272 "Pop up a menu equivalent to the menu bar for keyboard EVENT with PREFIX.
273 The contents are the items that would be in the menu bar whether or
274 not it is actually displayed."
281 "Popup a menu like either `mouse-major-mode-menu' or `mouse-popup-menubar'.
282 Use the former if the menu bar is showing, otherwise the latter."
289 event prefix))
291 \f
292 ;; Commands that operate on windows.
299 ;; Give temporary modes such as isearch a chance to turn off.
303 "Delete the window you click on.
304 Do nothing if the frame has just one window.
305 This command must be bound to a mouse click."
312 "Select the window clicked on; don't move point."
324 "Delete the window clicked on, and create a new frame displaying its buffer."
335 "Delete all windows except the one you click on."
340 "Select Emacs window mouse is on, then split it vertically in half.
341 The window is split at the line clicked on.
342 This command must be bound to a mouse click."
356 "Select Emacs window mouse is on, then split it horizontally in half.
357 The window is split at the column clicked on.
358 This command must be bound to a mouse click."
372 "Return the (or a) window directly above WINDOW.
373 That means one whose bottom edge is at the same height as WINDOW's top edge."
378 above-window)
384 start-top)
390 above-window))
393 "Move the bottom of WINDOW up or down by GROWTH lines.
394 Move it down if GROWTH is positive, or up if GROWTH is negative.
395 If this would make WINDOW too short,
396 shrink the window or windows above it to make room."
402 "Move the top of WINDOW up or down by GROWTH lines.
403 Move it down if GROWTH is positive, or up if GROWTH is negative.
404 If this would make WINDOW too short, shrink the window or windows
405 above it to make room."
406 ;; Moving the top of WINDOW is actually moving the bottom of the
407 ;; window above.
413 "Change the height of a window by dragging on the mode or header line.
414 START-EVENT is the starting mouse-event of the drag action.
415 MODE-LINE-P non-nil means dragging a mode line; nil means a header line."
416 ;; Give temporary modes such as isearch a chance to turn off.
429 should-enlarge-minibuffer event mouse y top bot edges wconfig growth)
432 ;; if this is the bottommost ordinary window, then to
433 ;; move its modeline the minibuffer must be enlarged.
436 mode-line-p
441 ;; loop reading events and sampling the position of
442 ;; the mouse.
447 ;; do nothing if
448 ;; - there is a switch-frame event.
449 ;; - the mouse isn't in the frame that we started in
450 ;; - the mouse isn't in any Emacs frame
451 ;; drag if
452 ;; - there is a mouse-movement event
453 ;; - there is a scroll-bar-movement event
454 ;; (same as mouse movement for our purposes)
455 ;; quit if
456 ;; - there is a keyboard event or some other unknown event.
461 nil)
465 ;; Do not unread a drag-mouse-1 event since it will cause the
466 ;; selection of the window above when dragging the modeline
467 ;; above the selected window.
473 nil)
476 nil)
484 ;; compute size change needed
490 ;; The window's top includes the header line!
494 ;; Check for an error case.
500 ;; If we ever move, make sure we don't mistakenly treat
501 ;; some unexpected `mouse-1' final event as a sign that
502 ;; this whole drag was nothing more than a click.
505 ;; grow/shrink minibuffer?
509 ;; no. grow/shrink the selected window
510 ;(message "growth = %d" growth)
515 ;; if this window's growth caused another
516 ;; window to be deleted because it was too
517 ;; short, rescind the change.
518 ;;
519 ;; if size change caused space to be stolen
520 ;; from a window above this one, rescind the
521 ;; change, but only if we didn't grow/shrink
522 ;; the minibuffer. minibuffer size changes
523 ;; can cause all windows to shrink... no way
524 ;; around it.
528 mode-line-p
529 (/= top
531 ;; Choose right window.
532 start-event-window)))))
535 ;; Presumably if this was just a click, the last event should
536 ;; be `mouse-1', whereas if this did move the mouse, it should be
537 ;; a `drag-mouse-1'. In any case `on-link' would have been nulled
538 ;; above if there had been any significant mouse movement.
543 "Change the height of a window by dragging on the mode line."
548 "Change the height of a window by dragging on the header line.
549 Windows whose header-lines are at the top of the frame cannot be
550 resized by dragging their header-line."
552 ;; Changing the window's size by dragging its header-line when the
553 ;; header-line is at the top of the frame is somewhat strange,
554 ;; because the header-line doesn't move, so don't do it.
564 \f
566 "Return a window that is immediately to the right of WINDOW, or nil."
569 best best-right
581 best))
584 "Change the width of a window by dragging on the vertical line."
586 ;; Give temporary modes such as isearch a chance to turn off.
592 event mouse x left right edges growth
608 ;; loop reading events and sampling the position of
609 ;; the mouse.
613 ;; do nothing if
614 ;; - there is a switch-frame event.
615 ;; - the mouse isn't in the frame that we started in
616 ;; - the mouse isn't in any Emacs frame
617 ;; drag if
618 ;; - there is a mouse-movement event
619 ;; - there is a scroll-bar-movement event
620 ;; (same as mouse movement for our purposes)
621 ;; quit if
622 ;; - there is a keyboard event or some other unknown event
623 ;; unknown event.
627 nil)
635 nil)
637 nil)
640 ;; If the scroll bar is on the window's left,
641 ;; adjust the window on the left.
643 start-event-window
645 start-event-window))))
651 ;; scale back a move that would make the
652 ;; window too thin.
655 ;; compute size change needed
660 \f
662 "Move point to the position clicked on with the mouse.
663 This should be bound to a mouse click event type."
666 ;; Use event-end in case called from mouse-drag-region.
667 ;; If EVENT is a click, event-end and event-start give same value.
675 "Return non-nil if there's an active region that was set with the mouse."
682 "Set the region to the text dragged over, and copy to kill ring.
683 This should be bound to a mouse drag event."
690 ;; Don't set this-command to `kill-region', so a following
691 ;; C-w won't double the text in the kill ring. Ignore
692 ;; `last-command' so we don't append to a preceding kill.
696 ;; On a text terminal, bounce the cursor.
706 ;; Set transient-mark-mode for a little while.
711 transient-mark-mode))))
717 "The pause between scroll steps caused by mouse drags, in seconds.
718 If you drag the mouse beyond the edge of a window, Emacs scrolls the
719 window to bring the text beyond that edge into view, with a delay of
720 this many seconds between scroll steps. Scrolling stops when you move
721 the mouse back into the window, or release the button.
722 This variable's value may be non-integral.
723 Setting this to zero causes Emacs to scroll as fast as it can."
728 "The minimum number of lines scrolled by dragging mouse out of window.
729 Moving the mouse out the top or bottom edge of the window begins
730 scrolling repeatedly. The number of lines scrolled per repetition
731 is normally equal to the number of lines beyond the window edge that
732 the mouse has moved. However, it always scrolls at least the number
733 of lines specified by this variable."
738 "Scroll the window WINDOW, JUMP lines at a time, until new input arrives.
739 If OVERLAY is an overlay, let it stretch from START to the far edge of
740 the newly visible text.
741 Upon exit, point is at the far edge of the newly visible text."
757 ;; window-end doesn't reflect the window's new
758 ;; start position until the next redisplay.
764 ;; Now that we have scrolled WINDOW properly,
765 ;; put point back where it was for the redisplay
766 ;; so that we don't mess up the selected window.
778 "Set the region to the text that the mouse is dragged over.
779 Highlight the drag area as you move the mouse.
780 This must be bound to a button-down mouse event.
781 In Transient Mark mode, the highlighting remains as long as the mark
782 remains active. Otherwise, it remains until the next input event.
784 If the click is in the echo area, display the `*Messages*' buffer."
790 ;; Swallow the up-event.
795 ;; Give temporary modes such as isearch a chance to turn off.
801 "Look for a property at click position.
802 POS may be either a buffer position or a click position like
803 those returned from `event-start'. If the click position is on
804 a string, the text property PROPERTY is examined.
805 If this is nil or the click is not on a string, then
806 the corresponding buffer position is searched for PROPERTY.
807 If PROPERTY is encountered in one of those places,
808 its value is returned."
819 "Return non-nil if POS is on a link in the current buffer.
820 POS must be a buffer position in the current buffer or a mouse
821 event location in the selected window (see `event-start').
822 However, if `mouse-1-click-in-non-selected-windows' is non-nil,
823 POS may be a mouse event location in any window.
825 A clickable link is identified by one of the following methods:
827 - If the character at POS has a non-nil `follow-link' text or
828 overlay property, the value of that property determines what to do.
830 - If there is a local key-binding or a keybinding at position POS
831 for the `follow-link' event, the binding of that event determines
832 what to do.
834 The resulting value determine whether POS is inside a link:
836 - If the value is `mouse-face', POS is inside a link if there
837 is a non-nil `mouse-face' property at POS. Return t in this case.
839 - If the value is a function, FUNC, POS is inside a link if
840 the call \(FUNC POS) returns non-nil. Return the return value
841 from that call. Arg is \(posn-point POS) if POS is a mouse event.
843 - Otherwise, return the value itself.
845 The return value is interpreted as follows:
847 - If it is a string, the mouse-1 event is translated into the
848 first character of the string, i.e. the action of the mouse-1
849 click is the local or global binding of that character.
851 - If it is a vector, the mouse-1 event is translated into the
852 first element of that vector, i.e. the action of the mouse-1
853 click is the local or global binding of that event.
855 - Otherwise, the mouse-1 event is translated into a mouse-2 event
856 at the same position."
859 mouse-1-click-in-non-selected-windows
867 ;; FIXME: This seems questionable if the click is not in a buffer.
868 ;; Should we instead decide that `action' takes a `posn'?
876 "Fix help message MSG for `mouse-1-click-follows-link'."
896 msg)
899 do-mouse-drag-region-post-process)
900 "Track mouse drags by highlighting area between point and cursor.
901 The region will be defined with mark and point.
902 DO-MOUSE-DRAG-REGION-POST-PROCESS should only be used by
903 `mouse-drag-region'."
908 ;; We've recorded what we needed from the current buffer and
909 ;; window, now let's jump to the place of the event, where things
910 ;; are happening.
923 ;; Don't count the mode line.
928 ;; Use start-point before the intangibility
929 ;; treatment, in case we click on a link inside an
930 ;; intangible text.
936 ;; Suppress automatic hscrolling, because that is a nuisance
937 ;; when setting point near the right fringe (but see below).
940 event end end-point)
943 ;; In case the down click is in the middle of some intangible text,
944 ;; use the end of that text, and put it in START-POINT.
951 ;; Activate the region, using `mouse-start-end' to determine where
952 ;; to put point and mark (e.g., double-click will select a word).
961 ;; Track the mouse until we get a non-movement event.
968 ;; Automatic hscrolling did not occur during the call to
969 ;; `read-event'; but if the user subsequently drags the
970 ;; mouse, go ahead and hscroll.
978 end-point click-count)
984 nil start-point))
987 nil start-point))))))))
989 ;; Handle the terminating event if possible.
991 ;; Ensure that point is on the end of the last event.
997 end-point click-count))
999 ;; Find its binding.
1004 mouse-set-region))))))
1008 ;; If point has moved, finish the drag.
1011 do-mouse-drag-region-post-process
1015 ;; If point hasn't moved, run the binding of the
1016 ;; terminating up-event.
1022 ;; Don't run the up-event handler if the window
1023 ;; start changed in a redisplay after the
1024 ;; mouse-set-point for the down-mouse event at
1025 ;; the beginning of this function. When the
1026 ;; window start has changed, the up-mouse event
1027 ;; contains a different position due to the new
1028 ;; window contents, and point is set again.
1031 start-window-start)))
1035 ;; If we rebind to mouse-2, reselect previous selected
1036 ;; window, so that the mouse-2 event runs in the same
1037 ;; situation as if user had clicked it directly. Fixes
1038 ;; the bug reported by juri@jurta.org on 2005-12-27.
1043 ;; If this mouse click has never been done by the
1044 ;; user, it doesn't have the necessary property to be
1045 ;; interpreted correctly.
1079 \f
1080 ;; Commands to handle xterm-style multiple clicks.
1082 "Skip over word, over whitespace, or over identical punctuation.
1083 If DIR is positive skip forward; if negative, skip backward."
1087 ;; Here, we can't use skip-syntax-forward/backward because
1088 ;; they don't pay attention to word-separating-categories,
1089 ;; and thus they will skip over a true word boundary. So,
1090 ;; we simulate the original behavior by using forward-word.
1112 "Return a list of region bounds based on START and END according to MODE.
1113 If MODE is 0 then set point to (min START END), mark to (max START END).
1114 If MODE is 1 then set point to start of word at (min START END),
1115 mark to end of word at (max START END).
1116 If MODE is 2 then do the same for lines."
1120 end temp)))
1184 \f
1185 ;; Subroutine: set the mark where CLICK happened,
1186 ;; but don't do anything else.
1203 ;; Use reverse, not nreverse, since event-modifiers
1204 ;; does not copy the list it returns.
1207 event)))
1211 t
1213 nil)))
1215 ;; Momentarily show where the mark is, if highlighting doesn't show it.
1218 "Set mark at the position clicked on with the mouse.
1219 Display cursor at that position for a second.
1220 This must be bound to a mouse click."
1224 ;; We don't use save-excursion because that preserves the mark too.
1234 "Kill the region between point and the mouse click.
1246 "Insert the last stretch of killed text at the position clicked on.
1247 Also move point to one end of the text thus inserted (normally the end),
1248 and set mark at the beginning.
1250 If `mouse-yank-at-point' is non-nil, insert at point
1251 regardless of where you click."
1253 ;; Give temporary modes such as isearch a chance to turn off.
1256 ;; Without this, confusing things happen upon e.g. inserting into
1257 ;; the middle of an active region.
1265 "Insert the primary selection at the position clicked on.
1266 Move point to the end of the inserted text.
1267 If `mouse-yank-at-point' is non-nil, insert at point
1268 regardless of where you click."
1270 ;; Give temporary modes such as isearch a chance to turn off.
1272 ;; Without this, confusing things happen upon e.g. inserting into
1273 ;; the middle of an active region.
1283 ;; FIXME: What about xterm-mouse-mode etc.?
1291 "Copy the region between point and the mouse click in the kill ring.
1298 ;; This function used to delete the text between point and the mouse
1299 ;; whenever it was equal to the front of the kill ring, but some
1300 ;; people found that confusing.
1302 ;; The position of the last invocation of `mouse-save-then-kill'.
1306 ;; We must make our own undo boundaries
1307 ;; because they happen automatically only for the current buffer.
1310 ;; If we have no undo list in this buffer,
1311 ;; just delete.
1313 ;; Delete, but make the undo-list entry share with the kill ring.
1314 ;; First, delete just one char, so in case buffer is being modified
1315 ;; for the first time, the undo list records that fact.
1320 ;; Undo that deletion--but don't change the undo list!
1323 ;; Now delete the rest of the specified region,
1324 ;; but don't record it.
1330 ;; Search back in buffer-undo-list for the string
1331 ;; that came from deleting one character.
1334 ;; Replace it with an entry for the entire deleted text.
1340 "Set the region according to CLICK; the second time, kill it.
1341 CLICK should be a mouse click event.
1343 If the region is inactive, activate it temporarily. Set mark at
1344 the original point, and move point to the position of CLICK.
1346 If the region is already active, adjust it. Normally, do this by
1347 moving point or mark, whichever is closer, to CLICK. But if you
1348 have selected whole words or lines, move point or mark to the
1349 word or line boundary closest to CLICK instead.
1351 If this command is called a second consecutive time with the same
1352 CLICK position, kill the region."
1359 ;; Don't let a subsequent kill command append to this one.
1361 ;; Check if the user has multi-clicked to select words/lines.
1365 mouse-selection-click-count
1369 ;; If the user clicked without moving point, kill the region.
1370 ;; This also resets `mouse-selection-click-count'.
1378 ;; Otherwise, if there is a suitable region, adjust it by moving
1379 ;; one end (whichever is closer) to CLICK-PT.
1384 mouse-save-then-kill-posn)
1386 mouse-set-region))
1397 ;; Arrange for a repeated mouse-3 to kill the region.
1400 ;; Otherwise, set the mark where point is and move to CLICK-PT.
1410 \f
1421 ol)
1422 "An overlay which records the current secondary selection.
1427 ;; A marker which records the specified first end for a secondary selection.
1428 ;; May be nil.
1432 "Set one end of the secondary selection to the position clicked on.
1434 and complete the secondary selection."
1439 ;; Cancel any preexisting secondary selection.
1448 "Set the secondary selection to the text that the mouse is dragged over.
1449 This must be bound to a mouse drag event."
1453 beg
1460 'SECONDARY
1465 "Set the secondary selection to the text that the mouse is dragged over.
1466 Highlight the drag area as you move the mouse.
1467 This must be bound to a button-down mouse event.
1468 The function returns a non-nil value if it creates a secondary selection."
1479 ;; Don't count the mode line.
1485 ;; Double or triple press: make an initial selection
1486 ;; of one word or line.
1491 ;; Single-press: cancel any preexisting secondary selection.
1504 nil
1508 ;; Are we moving within the original window?
1512 click-count)))
1525 mouse-secondary-overlay start-point))
1528 mouse-secondary-overlay start-point)))))))))
1539 nil))
1541 'SECONDARY
1546 "Insert the secondary selection at the position clicked on.
1547 Move point to the end of the inserted text.
1548 If `mouse-yank-at-point' is non-nil, insert at point
1549 regardless of where you click."
1551 ;; Give temporary modes such as isearch a chance to turn off.
1560 "Kill the text in the secondary selection.
1561 This is intended more as a keyboard command than as a mouse command
1562 but it can work as either one.
1564 The current buffer (in case of keyboard use), or the buffer clicked on,
1565 must be the one that the secondary selection is in. This requirement
1566 is to prevent accidents."
1582 "Set the secondary selection and save it to the kill ring.
1583 The second time, kill it. CLICK should be a mouse click event.
1585 If you have not called `mouse-start-secondary' in the clicked
1586 buffer, activate the secondary selection and set it between point
1587 and the click position CLICK.
1589 Otherwise, adjust the bounds of the secondary selection.
1590 Normally, do this by moving its beginning or end, whichever is
1591 closer, to CLICK. But if you have selected whole words or lines,
1592 adjust to the word or line boundary closest to CLICK instead.
1594 If this command is called a second consecutive time with the same
1595 CLICK position, kill the secondary selection."
1602 ;; Don't let a subsequent kill command append to this one.
1604 ;; Check if the user has multi-clicked to select words/lines.
1607 mouse-secondary-click-count
1615 ;; If the secondary selection is not active in BUF, activate it.
1625 ;; If the user clicked without moving point, delete the secondary
1626 ;; selection. This also resets `mouse-secondary-click-count'.
1635 ;; Otherwise, if there is a suitable secondary selection overlay,
1636 ;; adjust it by moving one end (whichever is closer) to CLICK-PT.
1645 ;; If the front of the kill ring comes from an immediately
1646 ;; previous use of this command, replace the entry.
1650 t)
1656 ;; Otherwise, set the secondary selection overlay.
1660 ;; All we have is one end of a selection, so put the other
1661 ;; end here.
1667 ;; Finally, set the window system's secondary selection.
1675 \f
1677 "Number of buffers in one pane (submenu) of the buffer menu.
1678 If we have lots of buffers, divide them into groups of
1679 `mouse-buffer-menu-maxlen' and make a pane (or submenu) for each one."
1686 will split the buffer menu by the major modes (see
1687 `mouse-buffer-menu-mode-groups') or just by menu length.
1688 Set to 1 (or even 0!) if you want to group by major mode always, and to
1689 a large number if you prefer a mixed multitude. The default is 4."
1707 Each element has the form (REGEXP . GROUPNAME).
1711 "Pop up a menu of buffers for selection with the mouse.
1712 This switches buffers in the window that you clicked on,
1713 and selects that window."
1717 ;; Make an alist of elements that look like (MENU-ITEM . BUFFER).
1719 ;; Divide all buffers into buckets for various major modes.
1720 ;; Each bucket looks like (MODE NAMESTRING BUFFERS...).
1730 adjusted-major-mode
1735 ;; Compute the sum of squares of sizes of the major-mode buckets.
1740 (+ sum-of-squares
1745 ;; Subdividing by major modes really helps, so let's do it.
1747 ;; Sort the list to put the most popular major modes first.
1752 ;; Make a separate submenu for each major mode
1753 ;; that has more than one buffer,
1754 ;; unless all the remaining buffers are less than 1/10 of them.
1764 this-mode-list)
1765 subdivided-menus))))
1769 ;; If any major modes are left over,
1770 ;; make a single submenu for them.
1774 ;; we don't need split-by-major-mode any more,
1775 ;; so we can ditch it with nconc.
1780 subdivided-menus)))))
1791 window))
1797 head)
1826 list-buffers-directory)))
1828 elt)
1829 head))))
1831 ;; Compensate for the reversal that the above loop does.
1835 ;; If we have lots of buffers, divide them into groups of 20
1836 ;; and make a pane (or submenu) for each one.
1841 ;; Pull off the next mouse-buffer-menu-maxlen buffers
1842 ;; and make them the next element of sublist.
1846 nil))
1848 sublists))
1852 ;; Few buffers--put them all in one pane.
1854 \f
1858 ;; Font selection.
1877 ;; For these, we specify the pixel height and width.
1906 ;; We don't seem to have these; who knows what they are.
1907 ;; ("fg-18" "fg-18")
1908 ;; ("fg-25" "fg-25")
1909 ("lucidasanstypewriter-12" "-b&h-lucidatypewriter-medium-r-normal-sans-*-120-*-*-*-*-iso8859-1")
1910 ("lucidasanstypewriter-bold-14" "-b&h-lucidatypewriter-bold-r-normal-sans-*-140-*-*-*-*-iso8859-1")
1913 ;; ("lucidatypewriter-bold-r-24" "-b&h-lucidatypewriter-bold-r-normal-sans-24-240-75-75-m-140-iso8859-1")
1914 ;; ("fixed-medium-20" "-misc-fixed-medium-*-*-*-20-*-*-*-*-*-*-*")
1915 )))
1921 ;; For these, we specify the point height.
1946 ))))
1952 "Prompt for a font name, using `x-popup-menu', and return it."
1959 last-nonmenu-event
1967 "Set the default font for the selected frame.
1968 The argument FONTS is a list of font names; the first valid font
1969 in this list is used.
1971 When called interactively, pop up a menu and allow the user to
1972 choose a font."
1978 last-nonmenu-event
1980 ;; Append list of fontsets currently defined.
2002 "Show a menu for changing the default face in the current buffer."
2008 nil ; regenerate new fonts
2009 ;; Initialize mouse-appearance-menu-map
2018 ;; Font selector
2022 ;; If the select-font is unavailable, construct a menu.
2031 font-symbol)
2034 '("--"))
2035 (setq font-symbol (intern (cadr font)))
2036 (define-key submenu-map (vector font-symbol)
2037 (list 'menu-item (car font) font-symbol)))))
2038 (define-key font-submenu (vector (intern submenu-name))
2039 (list 'menu-item submenu-name submenu-map))))
2040 (define-key mouse-appearance-menu-map [font-submenu]
2041 (list 'menu-item "Change Text Font" font-submenu)))))
2042 (let ((choice (x-popup-menu event mouse-appearance-menu-map)))
2043 (setq choice (nth (1- (length choice)) choice))
2044 (cond ((eq choice 'text-scale-increase)
2045 (text-scale-increase 1))
2046 ((eq choice 'text-scale-decrease)
2047 (text-scale-increase -1))
2048 ((eq choice 'face-remap-reset-base)
2049 (text-scale-mode 0)
2050 (buffer-face-mode 0))
2051 (choice
2052 ;; Either choice == 'x-select-font, or choice is a
2053 ;; symbol whose name is a font.
2054 (buffer-face-mode-invoke (font-face-attributes
2055 (if (eq choice 'x-select-font)
2056 (x-select-font)
2057 (symbol-name choice)))
2058 t
2059 (called-interactively-p 'interactive))))))))
2061 \f
2062 ;;; Bindings for mouse commands.
2064 (define-key global-map [down-mouse-1] 'mouse-drag-region)
2065 (global-set-key [mouse-1] 'mouse-set-point)
2066 (global-set-key [drag-mouse-1] 'mouse-set-region)
2068 ;; These are tested for in mouse-drag-region.
2069 (global-set-key [double-mouse-1] 'mouse-set-point)
2070 (global-set-key [triple-mouse-1] 'mouse-set-point)
2072 ;; Clicking on the fringes causes hscrolling:
2073 (global-set-key [left-fringe mouse-1] 'mouse-set-point)
2074 (global-set-key [right-fringe mouse-1] 'mouse-set-point)
2076 (global-set-key [mouse-2] 'mouse-yank-primary)
2077 ;; Allow yanking also when the corresponding cursor is "in the fringe".
2078 (global-set-key [right-fringe mouse-2] 'mouse-yank-at-click)
2079 (global-set-key [left-fringe mouse-2] 'mouse-yank-at-click)
2080 (global-set-key [mouse-3] 'mouse-save-then-kill)
2081 (global-set-key [right-fringe mouse-3] 'mouse-save-then-kill)
2082 (global-set-key [left-fringe mouse-3] 'mouse-save-then-kill)
2084 ;; By binding these to down-going events, we let the user use the up-going
2085 ;; event to make the selection, saving a click.
2086 (global-set-key [C-down-mouse-1] 'mouse-buffer-menu)
2087 (if (not (eq system-type 'ms-dos))
2088 (global-set-key [S-down-mouse-1] 'mouse-appearance-menu))
2089 ;; C-down-mouse-2 is bound in facemenu.el.
2090 (global-set-key [C-down-mouse-3]
2091 `(menu-item ,(purecopy "Menu Bar") ignore
2092 :filter (lambda (_)
2093 (if (zerop (or (frame-parameter nil 'menu-bar-lines) 0))
2094 (mouse-menu-bar-map)
2095 (mouse-menu-major-mode-map)))))
2097 ;; Binding mouse-1 to mouse-select-window when on mode-, header-, or
2098 ;; vertical-line prevents Emacs from signaling an error when the mouse
2099 ;; button is released after dragging these lines, on non-toolkit
2100 ;; versions.
2101 (global-set-key [mode-line mouse-1] 'mouse-select-window)
2102 (global-set-key [mode-line drag-mouse-1] 'mouse-select-window)
2103 (global-set-key [mode-line down-mouse-1] 'mouse-drag-mode-line)
2104 (global-set-key [header-line down-mouse-1] 'mouse-drag-header-line)
2105 (global-set-key [header-line mouse-1] 'mouse-select-window)
2106 (global-set-key [mode-line mouse-2] 'mouse-delete-other-windows)
2107 (global-set-key [mode-line mouse-3] 'mouse-delete-window)
2108 (global-set-key [mode-line C-mouse-2] 'mouse-split-window-horizontally)
2109 (global-set-key [vertical-scroll-bar C-mouse-2] 'mouse-split-window-vertically)
2110 (global-set-key [vertical-line C-mouse-2] 'mouse-split-window-vertically)
2111 (global-set-key [vertical-line down-mouse-1] 'mouse-drag-vertical-line)
2112 (global-set-key [vertical-line mouse-1] 'mouse-select-window)
2114 (provide 'mouse)
2116 ;; This file contains the functionality of the old mldrag.el.
2117 (defalias 'mldrag-drag-mode-line 'mouse-drag-mode-line)
2118 (defalias 'mldrag-drag-vertical-line 'mouse-drag-vertical-line)
2119 (make-obsolete 'mldrag-drag-mode-line 'mouse-drag-mode-line "21.1")
2120 (make-obsolete 'mldrag-drag-vertical-line 'mouse-drag-vertical-line "21.1")
2121 (provide 'mldrag)
2123 ;; arch-tag: 9a710ce1-914a-4923-9b81-697f7bf82ab3
2124 ;;; mouse.el ends here