| blob | a2a0191ce79ac76b017427cc356b88bd39d6f7b1 |
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
9 ;; This file is part of GNU Emacs.
11 ;; GNU Emacs is free software: you can redistribute it and/or modify
12 ;; it under the terms of the GNU General Public License as published by
13 ;; the Free Software Foundation, either version 3 of the License, or
14 ;; (at your option) any later version.
16 ;; GNU Emacs is distributed in the hope that it will be useful,
17 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 ;; GNU General Public License for more details.
21 ;; You should have received a copy of the GNU General Public License
22 ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
24 ;;; Commentary:
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.
32 ;;; Code:
34 ;;; Utility functions.
36 ;; Indent track-mouse like progn.
40 "If non-nil, mouse yank commands yank at point instead of at click."
45 "If non-nil, mouse drag copies region to kill-ring."
51 "Non-nil means that clicking Mouse-1 on a link follows the link.
53 With the default setting, an ordinary Mouse-1 click on a link
54 performs the same action as Mouse-2 on that link, while a longer
55 Mouse-1 click \(hold down the Mouse-1 button for more than 450
56 milliseconds) performs the original Mouse-1 binding \(which
57 typically sets point where you click the mouse).
59 If value is an integer, the time elapsed between pressing and
60 releasing the mouse button determines whether to follow the link
61 or perform the normal Mouse-1 action (typically set point).
62 The absolute numeric value specifices the maximum duration of a
64 short click follows the link, and a longer click performs the
65 normal action. A negative value gives the opposite behavior.
67 If value is `double', a double click follows the link.
69 Otherwise, a single Mouse-1 click unconditionally follows the link.
71 Note that dragging the mouse never follows the link.
73 This feature only works in modes that specifically identify
74 clickable text as links, so it may not work with some external
75 packages. See `mouse-on-link-p' for details."
84 "If non-nil, a Mouse-1 click also follows links in non-selected windows.
86 If nil, a Mouse-1 click on a link in a non-selected window performs
87 the normal mouse-1 binding, typically selects the window and sets
88 point at the click position."
94 \f
95 ;; Provide a mode-specific menu on a mouse button.
98 "Popup the given menu and call the selected option.
99 MENU can be a keymap, an easymenu-style menu or a list of keymaps as for
100 `x-popup-menu'.
101 POSITION can be a click event or ((XOFFSET YOFFSET) WINDOW) and defaults to
102 the current mouse position.
103 PREFIX is the prefix argument (if any) to pass to the command."
111 event cmd)
115 ;; The looping behavior was taken from lmenu's popup-menu-popup
117 ;; map could be a prefix key, in which case
118 ;; we need to get its function cell
119 ;; definition.
121 ;; Strangely x-popup-menu returns a list.
122 ;; mouse-major-mode-menu was using a weird:
123 ;; (key-binding (apply 'vector (append '(menu-bar) menu-prefix events)))
126 ;; We were given a list of keymaps. Search them all
127 ;; in sequence until a first binding is found.
129 binding)
135 binding)
136 ;; We were given a single keymap.
138 ;; Clear out echoing, which perhaps shows a prefix arg.
140 ;; Maybe try again but with the submap.
142 ;; If the user did not cancel by refusing to select,
143 ;; and if the result is a command, run it.
146 ;; `setup-specified-language-environment', for instance,
147 ;; expects this to be set from a menu keymap.
149 ;; mouse-major-mode-menu was using `command-execute' instead.
153 "Show menu for minor mode specified by INDICATOR.
154 Interactively, INDICATOR is read using completion.
155 If there is no menu defined for the minor mode, then create one with
156 items `Turn Off' and `Help'."
159 "Minor mode indicator: "
170 ,indicator
178 "Show minor-mode menu for EVENT on minor modes area of the mode line."
188 ;; Make a keymap in which our last command leads to a menu or
189 ;; default to the edit menu.
193 menu-bar-edit-menu))
194 uniq)
197 newmap))
200 "Given menu keymap,
201 if it defines exactly one submenu, return just that submenu.
202 Otherwise return the whole menu."
209 menubar
213 "Return a keymap equivalent to the menu bar.
214 The contents are the items that would be in the menu bar whether or
215 not it is actually displayed."
219 ;; If a keymap doesn't have a prompt string (a lazy
220 ;; programmer didn't bother to provide one), create it and
221 ;; insert it into the keymap; each keymap gets its own
222 ;; prompt. This is required for non-toolkit versions to
223 ;; display non-empty menu pane names.
236 minor-mode)))
239 menu))
253 ;; Supplying the list is faster than making a new map.
254 ;; FIXME: We have a problem here: we have to use the global/local/minor
255 ;; so they're displayed in the expected order, but later on in the command
256 ;; loop, they're actually looked up in the opposite order.
258 global-menu
259 local-menu
260 minor-mode-menus)))
263 "Pop up a mode-specific menu of mouse commands.
264 Default to the Edit menu if the major mode doesn't define a menu."
271 "Pop up a menu equivalent to the menu bar for keyboard EVENT with PREFIX.
272 The contents are the items that would be in the menu bar whether or
273 not it is actually displayed."
280 "Popup a menu like either `mouse-major-mode-menu' or `mouse-popup-menubar'.
281 Use the former if the menu bar is showing, otherwise the latter."
288 event prefix))
290 \f
291 ;; Commands that operate on windows.
298 ;; Give temporary modes such as isearch a chance to turn off.
302 "Delete the window you click on.
303 Do nothing if the frame has just one window.
304 This command must be bound to a mouse click."
311 "Select the window clicked on; don't move point."
323 "Delete the window clicked on, and create a new frame displaying its buffer."
334 "Delete all windows except the one you click on."
339 "Select Emacs window mouse is on, then split it vertically in half.
340 The window is split at the line clicked on.
341 This command must be bound to a mouse click."
355 "Select Emacs window mouse is on, then split it horizontally in half.
356 The window is split at the column clicked on.
357 This command must be bound to a mouse click."
371 "Return the (or a) window directly above WINDOW.
372 That means one whose bottom edge is at the same height as WINDOW's top edge."
377 above-window)
383 start-top)
389 above-window))
392 "Move the bottom of WINDOW up or down by GROWTH lines.
393 Move it down if GROWTH is positive, or up if GROWTH is negative.
394 If this would make WINDOW too short,
395 shrink the window or windows above it to make room."
401 "Move the top of WINDOW up or down by GROWTH lines.
402 Move it down if GROWTH is positive, or up if GROWTH is negative.
403 If this would make WINDOW too short, shrink the window or windows
404 above it to make room."
405 ;; Moving the top of WINDOW is actually moving the bottom of the
406 ;; window above.
412 "Change the height of a window by dragging on the mode or header line.
413 START-EVENT is the starting mouse-event of the drag action.
414 MODE-LINE-P non-nil means dragging a mode line; nil means a header line."
415 ;; Give temporary modes such as isearch a chance to turn off.
428 should-enlarge-minibuffer event mouse y top bot edges wconfig growth)
431 ;; if this is the bottommost ordinary window, then to
432 ;; move its modeline the minibuffer must be enlarged.
435 mode-line-p
440 ;; loop reading events and sampling the position of
441 ;; the mouse.
446 ;; do nothing if
447 ;; - there is a switch-frame event.
448 ;; - the mouse isn't in the frame that we started in
449 ;; - the mouse isn't in any Emacs frame
450 ;; drag if
451 ;; - there is a mouse-movement event
452 ;; - there is a scroll-bar-movement event
453 ;; (same as mouse movement for our purposes)
454 ;; quit if
455 ;; - there is a keyboard event or some other unknown event.
460 nil)
464 ;; Do not unread a drag-mouse-1 event since it will cause the
465 ;; selection of the window above when dragging the modeline
466 ;; above the selected window.
472 nil)
475 nil)
483 ;; compute size change needed
489 ;; The window's top includes the header line!
493 ;; Check for an error case.
499 ;; If we ever move, make sure we don't mistakenly treat
500 ;; some unexpected `mouse-1' final event as a sign that
501 ;; this whole drag was nothing more than a click.
504 ;; grow/shrink minibuffer?
508 ;; no. grow/shrink the selected window
509 ;(message "growth = %d" growth)
514 ;; if this window's growth caused another
515 ;; window to be deleted because it was too
516 ;; short, rescind the change.
517 ;;
518 ;; if size change caused space to be stolen
519 ;; from a window above this one, rescind the
520 ;; change, but only if we didn't grow/shrink
521 ;; the minibuffer. minibuffer size changes
522 ;; can cause all windows to shrink... no way
523 ;; around it.
527 mode-line-p
528 (/= top
530 ;; Choose right window.
531 start-event-window)))))
534 ;; Presumably if this was just a click, the last event should
535 ;; be `mouse-1', whereas if this did move the mouse, it should be
536 ;; a `drag-mouse-1'. In any case `on-link' would have been nulled
537 ;; above if there had been any significant mouse movement.
542 "Change the height of a window by dragging on the mode line."
547 "Change the height of a window by dragging on the header line.
548 Windows whose header-lines are at the top of the frame cannot be
549 resized by dragging their header-line."
551 ;; Changing the window's size by dragging its header-line when the
552 ;; header-line is at the top of the frame is somewhat strange,
553 ;; because the header-line doesn't move, so don't do it.
563 \f
565 "Return a window that is immediately to the right of WINDOW, or nil."
568 best best-right
580 best))
583 "Change the width of a window by dragging on the vertical line."
585 ;; Give temporary modes such as isearch a chance to turn off.
591 event mouse x left right edges growth
607 ;; loop reading events and sampling the position of
608 ;; the mouse.
612 ;; do nothing if
613 ;; - there is a switch-frame event.
614 ;; - the mouse isn't in the frame that we started in
615 ;; - the mouse isn't in any Emacs frame
616 ;; drag if
617 ;; - there is a mouse-movement event
618 ;; - there is a scroll-bar-movement event
619 ;; (same as mouse movement for our purposes)
620 ;; quit if
621 ;; - there is a keyboard event or some other unknown event
622 ;; unknown event.
626 nil)
634 nil)
636 nil)
639 ;; If the scroll bar is on the window's left,
640 ;; adjust the window on the left.
642 start-event-window
644 start-event-window))))
650 ;; scale back a move that would make the
651 ;; window too thin.
654 ;; compute size change needed
659 \f
661 "Move point to the position clicked on with the mouse.
662 This should be bound to a mouse click event type."
665 ;; Use event-end in case called from mouse-drag-region.
666 ;; If EVENT is a click, event-end and event-start give same value.
674 "Return non-nil if there's an active region that was set with the mouse."
681 "Set the region to the text dragged over, and copy to kill ring.
682 This should be bound to a mouse drag event."
689 ;; Don't set this-command to `kill-region', so a following
690 ;; C-w won't double the text in the kill ring. Ignore
691 ;; `last-command' so we don't append to a preceding kill.
695 ;; On a text terminal, bounce the cursor.
705 ;; Set transient-mark-mode for a little while.
710 transient-mark-mode))))
716 "The pause between scroll steps caused by mouse drags, in seconds.
717 If you drag the mouse beyond the edge of a window, Emacs scrolls the
718 window to bring the text beyond that edge into view, with a delay of
719 this many seconds between scroll steps. Scrolling stops when you move
720 the mouse back into the window, or release the button.
721 This variable's value may be non-integral.
722 Setting this to zero causes Emacs to scroll as fast as it can."
727 "The minimum number of lines scrolled by dragging mouse out of window.
728 Moving the mouse out the top or bottom edge of the window begins
729 scrolling repeatedly. The number of lines scrolled per repetition
730 is normally equal to the number of lines beyond the window edge that
731 the mouse has moved. However, it always scrolls at least the number
732 of lines specified by this variable."
737 "Scroll the window WINDOW, JUMP lines at a time, until new input arrives.
738 If OVERLAY is an overlay, let it stretch from START to the far edge of
739 the newly visible text.
740 Upon exit, point is at the far edge of the newly visible text."
756 ;; window-end doesn't reflect the window's new
757 ;; start position until the next redisplay.
763 ;; Now that we have scrolled WINDOW properly,
764 ;; put point back where it was for the redisplay
765 ;; so that we don't mess up the selected window.
777 "Set the region to the text that the mouse is dragged over.
778 Highlight the drag area as you move the mouse.
779 This must be bound to a button-down mouse event.
780 In Transient Mark mode, the highlighting remains as long as the mark
781 remains active. Otherwise, it remains until the next input event.
783 If the click is in the echo area, display the `*Messages*' buffer."
789 ;; Swallow the up-event.
794 ;; Give temporary modes such as isearch a chance to turn off.
800 "Look for a property at click position.
801 POS may be either a buffer position or a click position like
802 those returned from `event-start'. If the click position is on
803 a string, the text property PROPERTY is examined.
804 If this is nil or the click is not on a string, then
805 the corresponding buffer position is searched for PROPERTY.
806 If PROPERTY is encountered in one of those places,
807 its value is returned."
818 "Return non-nil if POS is on a link in the current buffer.
819 POS must be a buffer position in the current buffer or a mouse
820 event location in the selected window (see `event-start').
821 However, if `mouse-1-click-in-non-selected-windows' is non-nil,
822 POS may be a mouse event location in any window.
824 A clickable link is identified by one of the following methods:
826 - If the character at POS has a non-nil `follow-link' text or
827 overlay property, the value of that property determines what to do.
829 - If there is a local key-binding or a keybinding at position POS
830 for the `follow-link' event, the binding of that event determines
831 what to do.
833 The resulting value determine whether POS is inside a link:
835 - If the value is `mouse-face', POS is inside a link if there
836 is a non-nil `mouse-face' property at POS. Return t in this case.
838 - If the value is a function, FUNC, POS is inside a link if
839 the call \(FUNC POS) returns non-nil. Return the return value
840 from that call. Arg is \(posn-point POS) if POS is a mouse event.
842 - Otherwise, return the value itself.
844 The return value is interpreted as follows:
846 - If it is a string, the mouse-1 event is translated into the
847 first character of the string, i.e. the action of the mouse-1
848 click is the local or global binding of that character.
850 - If it is a vector, the mouse-1 event is translated into the
851 first element of that vector, i.e. the action of the mouse-1
852 click is the local or global binding of that event.
854 - Otherwise, the mouse-1 event is translated into a mouse-2 event
855 at the same position."
858 mouse-1-click-in-non-selected-windows
866 ;; FIXME: This seems questionable if the click is not in a buffer.
867 ;; Should we instead decide that `action' takes a `posn'?
875 "Fix help message MSG for `mouse-1-click-follows-link'."
895 msg)
898 do-mouse-drag-region-post-process)
899 "Track mouse drags by highlighting area between point and cursor.
900 The region will be defined with mark and point.
901 DO-MOUSE-DRAG-REGION-POST-PROCESS should only be used by
902 `mouse-drag-region'."
907 ;; We've recorded what we needed from the current buffer and
908 ;; window, now let's jump to the place of the event, where things
909 ;; are happening.
922 ;; Don't count the mode line.
927 ;; Use start-point before the intangibility
928 ;; treatment, in case we click on a link inside an
929 ;; intangible text.
935 ;; Suppress automatic hscrolling, because that is a nuisance
936 ;; when setting point near the right fringe (but see below).
939 event end end-point)
942 ;; In case the down click is in the middle of some intangible text,
943 ;; use the end of that text, and put it in START-POINT.
950 ;; Activate the region, using `mouse-start-end' to determine where
951 ;; to put point and mark (e.g., double-click will select a word).
960 ;; Track the mouse until we get a non-movement event.
967 ;; Automatic hscrolling did not occur during the call to
968 ;; `read-event'; but if the user subsequently drags the
969 ;; mouse, go ahead and hscroll.
977 end-point click-count)
983 nil start-point))
986 nil start-point))))))))
988 ;; Handle the terminating event if possible.
990 ;; Ensure that point is on the end of the last event.
996 end-point click-count))
998 ;; Find its binding.
1003 mouse-set-region))))))
1007 ;; If point has moved, finish the drag.
1010 do-mouse-drag-region-post-process
1014 ;; If point hasn't moved, run the binding of the
1015 ;; terminating up-event.
1021 ;; Don't run the up-event handler if the window
1022 ;; start changed in a redisplay after the
1023 ;; mouse-set-point for the down-mouse event at
1024 ;; the beginning of this function. When the
1025 ;; window start has changed, the up-mouse event
1026 ;; contains a different position due to the new
1027 ;; window contents, and point is set again.
1030 start-window-start)))
1034 ;; If we rebind to mouse-2, reselect previous selected
1035 ;; window, so that the mouse-2 event runs in the same
1036 ;; situation as if user had clicked it directly. Fixes
1037 ;; the bug reported by juri@jurta.org on 2005-12-27.
1042 ;; If this mouse click has never been done by the
1043 ;; user, it doesn't have the necessary property to be
1044 ;; interpreted correctly.
1078 \f
1079 ;; Commands to handle xterm-style multiple clicks.
1081 "Skip over word, over whitespace, or over identical punctuation.
1082 If DIR is positive skip forward; if negative, skip backward."
1086 ;; Here, we can't use skip-syntax-forward/backward because
1087 ;; they don't pay attention to word-separating-categories,
1088 ;; and thus they will skip over a true word boundary. So,
1089 ;; we simulate the original behavior by using forward-word.
1111 "Return a list of region bounds based on START and END according to MODE.
1112 If MODE is 0 then set point to (min START END), mark to (max START END).
1113 If MODE is 1 then set point to start of word at (min START END),
1114 mark to end of word at (max START END).
1115 If MODE is 2 then do the same for lines."
1119 end temp)))
1183 \f
1184 ;; Subroutine: set the mark where CLICK happened,
1185 ;; but don't do anything else.
1202 ;; Use reverse, not nreverse, since event-modifiers
1203 ;; does not copy the list it returns.
1206 event)))
1210 t
1212 nil)))
1214 ;; Momentarily show where the mark is, if highlighting doesn't show it.
1217 "Set mark at the position clicked on with the mouse.
1218 Display cursor at that position for a second.
1219 This must be bound to a mouse click."
1223 ;; We don't use save-excursion because that preserves the mark too.
1233 "Kill the region between point and the mouse click.
1245 "Insert the last stretch of killed text at the position clicked on.
1246 Also move point to one end of the text thus inserted (normally the end),
1247 and set mark at the beginning.
1249 If `mouse-yank-at-point' is non-nil, insert at point
1250 regardless of where you click."
1252 ;; Give temporary modes such as isearch a chance to turn off.
1255 ;; Without this, confusing things happen upon e.g. inserting into
1256 ;; the middle of an active region.
1264 "Insert the primary selection at the position clicked on.
1265 Move point to the end of the inserted text.
1266 If `mouse-yank-at-point' is non-nil, insert at point
1267 regardless of where you click."
1269 ;; Give temporary modes such as isearch a chance to turn off.
1271 ;; Without this, confusing things happen upon e.g. inserting into
1272 ;; the middle of an active region.
1282 ;; FIXME: What about xterm-mouse-mode etc.?
1290 "Copy the region between point and the mouse click in the kill ring.
1297 ;; This function used to delete the text between point and the mouse
1298 ;; whenever it was equal to the front of the kill ring, but some
1299 ;; people found that confusing.
1301 ;; The position of the last invocation of `mouse-save-then-kill'.
1305 ;; We must make our own undo boundaries
1306 ;; because they happen automatically only for the current buffer.
1309 ;; If we have no undo list in this buffer,
1310 ;; just delete.
1312 ;; Delete, but make the undo-list entry share with the kill ring.
1313 ;; First, delete just one char, so in case buffer is being modified
1314 ;; for the first time, the undo list records that fact.
1319 ;; Undo that deletion--but don't change the undo list!
1322 ;; Now delete the rest of the specified region,
1323 ;; but don't record it.
1329 ;; Search back in buffer-undo-list for the string
1330 ;; that came from deleting one character.
1333 ;; Replace it with an entry for the entire deleted text.
1339 "Set the region according to CLICK; the second time, kill it.
1340 CLICK should be a mouse click event.
1342 If the region is inactive, activate it temporarily. Set mark at
1343 the original point, and move point to the position of CLICK.
1345 If the region is already active, adjust it. Normally, do this by
1346 moving point or mark, whichever is closer, to CLICK. But if you
1347 have selected whole words or lines, move point or mark to the
1348 word or line boundary closest to CLICK instead.
1350 If this command is called a second consecutive time with the same
1351 CLICK position, kill the region."
1358 ;; Don't let a subsequent kill command append to this one.
1360 ;; Check if the user has multi-clicked to select words/lines.
1364 mouse-selection-click-count
1368 ;; If the user clicked without moving point, kill the region.
1369 ;; This also resets `mouse-selection-click-count'.
1377 ;; Otherwise, if there is a suitable region, adjust it by moving
1378 ;; one end (whichever is closer) to CLICK-PT.
1383 mouse-save-then-kill-posn)
1385 mouse-set-region))
1396 ;; Arrange for a repeated mouse-3 to kill the region.
1399 ;; Otherwise, set the mark where point is and move to CLICK-PT.
1409 \f
1420 ol)
1421 "An overlay which records the current secondary selection.
1426 ;; A marker which records the specified first end for a secondary selection.
1427 ;; May be nil.
1431 "Set one end of the secondary selection to the position clicked on.
1433 and complete the secondary selection."
1438 ;; Cancel any preexisting secondary selection.
1447 "Set the secondary selection to the text that the mouse is dragged over.
1448 This must be bound to a mouse drag event."
1452 beg
1459 'SECONDARY
1464 "Set the secondary selection to the text that the mouse is dragged over.
1465 Highlight the drag area as you move the mouse.
1466 This must be bound to a button-down mouse event.
1467 The function returns a non-nil value if it creates a secondary selection."
1478 ;; Don't count the mode line.
1484 ;; Double or triple press: make an initial selection
1485 ;; of one word or line.
1490 ;; Single-press: cancel any preexisting secondary selection.
1503 nil
1507 ;; Are we moving within the original window?
1511 click-count)))
1524 mouse-secondary-overlay start-point))
1527 mouse-secondary-overlay start-point)))))))))
1538 nil))
1540 'SECONDARY
1545 "Insert the secondary selection at the position clicked on.
1546 Move point to the end of the inserted text.
1547 If `mouse-yank-at-point' is non-nil, insert at point
1548 regardless of where you click."
1550 ;; Give temporary modes such as isearch a chance to turn off.
1559 "Kill the text in the secondary selection.
1560 This is intended more as a keyboard command than as a mouse command
1561 but it can work as either one.
1563 The current buffer (in case of keyboard use), or the buffer clicked on,
1564 must be the one that the secondary selection is in. This requirement
1565 is to prevent accidents."
1581 "Set the secondary selection and save it to the kill ring.
1582 The second time, kill it. CLICK should be a mouse click event.
1584 If you have not called `mouse-start-secondary' in the clicked
1585 buffer, activate the secondary selection and set it between point
1586 and the click position CLICK.
1588 Otherwise, adjust the bounds of the secondary selection.
1589 Normally, do this by moving its beginning or end, whichever is
1590 closer, to CLICK. But if you have selected whole words or lines,
1591 adjust to the word or line boundary closest to CLICK instead.
1593 If this command is called a second consecutive time with the same
1594 CLICK position, kill the secondary selection."
1601 ;; Don't let a subsequent kill command append to this one.
1603 ;; Check if the user has multi-clicked to select words/lines.
1606 mouse-secondary-click-count
1614 ;; If the secondary selection is not active in BUF, activate it.
1624 ;; If the user clicked without moving point, delete the secondary
1625 ;; selection. This also resets `mouse-secondary-click-count'.
1634 ;; Otherwise, if there is a suitable secondary selection overlay,
1635 ;; adjust it by moving one end (whichever is closer) to CLICK-PT.
1644 ;; If the front of the kill ring comes from an immediately
1645 ;; previous use of this command, replace the entry.
1649 t)
1655 ;; Otherwise, set the secondary selection overlay.
1659 ;; All we have is one end of a selection, so put the other
1660 ;; end here.
1666 ;; Finally, set the window system's secondary selection.
1674 \f
1676 "Number of buffers in one pane (submenu) of the buffer menu.
1677 If we have lots of buffers, divide them into groups of
1678 `mouse-buffer-menu-maxlen' and make a pane (or submenu) for each one."
1685 will split the buffer menu by the major modes (see
1686 `mouse-buffer-menu-mode-groups') or just by menu length.
1687 Set to 1 (or even 0!) if you want to group by major mode always, and to
1688 a large number if you prefer a mixed multitude. The default is 4."
1706 Each element has the form (REGEXP . GROUPNAME).
1710 "Pop up a menu of buffers for selection with the mouse.
1711 This switches buffers in the window that you clicked on,
1712 and selects that window."
1716 ;; Make an alist of elements that look like (MENU-ITEM . BUFFER).
1718 ;; Divide all buffers into buckets for various major modes.
1719 ;; Each bucket looks like (MODE NAMESTRING BUFFERS...).
1729 adjusted-major-mode
1734 ;; Compute the sum of squares of sizes of the major-mode buckets.
1739 (+ sum-of-squares
1744 ;; Subdividing by major modes really helps, so let's do it.
1746 ;; Sort the list to put the most popular major modes first.
1751 ;; Make a separate submenu for each major mode
1752 ;; that has more than one buffer,
1753 ;; unless all the remaining buffers are less than 1/10 of them.
1763 this-mode-list)
1764 subdivided-menus))))
1768 ;; If any major modes are left over,
1769 ;; make a single submenu for them.
1773 ;; we don't need split-by-major-mode any more,
1774 ;; so we can ditch it with nconc.
1779 subdivided-menus)))))
1790 window))
1796 head)
1825 list-buffers-directory)))
1827 elt)
1828 head))))
1830 ;; Compensate for the reversal that the above loop does.
1834 ;; If we have lots of buffers, divide them into groups of 20
1835 ;; and make a pane (or submenu) for each one.
1840 ;; Pull off the next mouse-buffer-menu-maxlen buffers
1841 ;; and make them the next element of sublist.
1845 nil))
1847 sublists))
1851 ;; Few buffers--put them all in one pane.
1853 \f
1857 ;; Font selection.
1876 ;; For these, we specify the pixel height and width.
1905 ;; We don't seem to have these; who knows what they are.
1906 ;; ("fg-18" "fg-18")
1907 ;; ("fg-25" "fg-25")
1908 ("lucidasanstypewriter-12" "-b&h-lucidatypewriter-medium-r-normal-sans-*-120-*-*-*-*-iso8859-1")
1909 ("lucidasanstypewriter-bold-14" "-b&h-lucidatypewriter-bold-r-normal-sans-*-140-*-*-*-*-iso8859-1")
1912 ;; ("lucidatypewriter-bold-r-24" "-b&h-lucidatypewriter-bold-r-normal-sans-24-240-75-75-m-140-iso8859-1")
1913 ;; ("fixed-medium-20" "-misc-fixed-medium-*-*-*-20-*-*-*-*-*-*-*")
1914 )))
1920 ;; For these, we specify the point height.
1945 ))))
1951 "Prompt for a font name, using `x-popup-menu', and return it."
1958 last-nonmenu-event
1966 "Set the default font for the selected frame.
1967 The argument FONTS is a list of font names; the first valid font
1968 in this list is used.
1970 When called interactively, pop up a menu and allow the user to
1971 choose a font."
1977 last-nonmenu-event
1979 ;; Append list of fontsets currently defined.
2001 "Show a menu for changing the default face in the current buffer."
2007 nil ; regenerate new fonts
2008 ;; Initialize mouse-appearance-menu-map
2017 ;; Font selector
2021 ;; If the select-font is unavailable, construct a menu.
2030 font-symbol)
2033 '("--"))
2034 (setq font-symbol (intern (cadr font)))
2035 (define-key submenu-map (vector font-symbol)
2036 (list 'menu-item (car font) font-symbol)))))
2037 (define-key font-submenu (vector (intern submenu-name))
2038 (list 'menu-item submenu-name submenu-map))))
2039 (define-key mouse-appearance-menu-map [font-submenu]
2040 (list 'menu-item "Change Text Font" font-submenu)))))
2041 (let ((choice (x-popup-menu event mouse-appearance-menu-map)))
2042 (setq choice (nth (1- (length choice)) choice))
2043 (cond ((eq choice 'text-scale-increase)
2044 (text-scale-increase 1))
2045 ((eq choice 'text-scale-decrease)
2046 (text-scale-increase -1))
2047 ((eq choice 'face-remap-reset-base)
2048 (text-scale-mode 0)
2049 (buffer-face-mode 0))
2050 (choice
2051 ;; Either choice == 'x-select-font, or choice is a
2052 ;; symbol whose name is a font.
2053 (buffer-face-mode-invoke (font-face-attributes
2054 (if (eq choice 'x-select-font)
2055 (x-select-font)
2056 (symbol-name choice)))
2057 t
2058 (called-interactively-p 'interactive))))))))
2060 \f
2061 ;;; Bindings for mouse commands.
2063 (define-key global-map [down-mouse-1] 'mouse-drag-region)
2064 (global-set-key [mouse-1] 'mouse-set-point)
2065 (global-set-key [drag-mouse-1] 'mouse-set-region)
2067 ;; These are tested for in mouse-drag-region.
2068 (global-set-key [double-mouse-1] 'mouse-set-point)
2069 (global-set-key [triple-mouse-1] 'mouse-set-point)
2071 ;; Clicking on the fringes causes hscrolling:
2072 (global-set-key [left-fringe mouse-1] 'mouse-set-point)
2073 (global-set-key [right-fringe mouse-1] 'mouse-set-point)
2075 (global-set-key [mouse-2] 'mouse-yank-primary)
2076 ;; Allow yanking also when the corresponding cursor is "in the fringe".
2077 (global-set-key [right-fringe mouse-2] 'mouse-yank-at-click)
2078 (global-set-key [left-fringe mouse-2] 'mouse-yank-at-click)
2079 (global-set-key [mouse-3] 'mouse-save-then-kill)
2080 (global-set-key [right-fringe mouse-3] 'mouse-save-then-kill)
2081 (global-set-key [left-fringe mouse-3] 'mouse-save-then-kill)
2083 ;; By binding these to down-going events, we let the user use the up-going
2084 ;; event to make the selection, saving a click.
2085 (global-set-key [C-down-mouse-1] 'mouse-buffer-menu)
2086 (if (not (eq system-type 'ms-dos))
2087 (global-set-key [S-down-mouse-1] 'mouse-appearance-menu))
2088 ;; C-down-mouse-2 is bound in facemenu.el.
2089 (global-set-key [C-down-mouse-3]
2090 `(menu-item ,(purecopy "Menu Bar") ignore
2091 :filter (lambda (_)
2092 (if (zerop (or (frame-parameter nil 'menu-bar-lines) 0))
2093 (mouse-menu-bar-map)
2094 (mouse-menu-major-mode-map)))))
2096 ;; Binding mouse-1 to mouse-select-window when on mode-, header-, or
2097 ;; vertical-line prevents Emacs from signaling an error when the mouse
2098 ;; button is released after dragging these lines, on non-toolkit
2099 ;; versions.
2100 (global-set-key [mode-line mouse-1] 'mouse-select-window)
2101 (global-set-key [mode-line drag-mouse-1] 'mouse-select-window)
2102 (global-set-key [mode-line down-mouse-1] 'mouse-drag-mode-line)
2103 (global-set-key [header-line down-mouse-1] 'mouse-drag-header-line)
2104 (global-set-key [header-line mouse-1] 'mouse-select-window)
2105 (global-set-key [mode-line mouse-2] 'mouse-delete-other-windows)
2106 (global-set-key [mode-line mouse-3] 'mouse-delete-window)
2107 (global-set-key [mode-line C-mouse-2] 'mouse-split-window-horizontally)
2108 (global-set-key [vertical-scroll-bar C-mouse-2] 'mouse-split-window-vertically)
2109 (global-set-key [vertical-line C-mouse-2] 'mouse-split-window-vertically)
2110 (global-set-key [vertical-line down-mouse-1] 'mouse-drag-vertical-line)
2111 (global-set-key [vertical-line mouse-1] 'mouse-select-window)
2113 (provide 'mouse)
2115 ;; This file contains the functionality of the old mldrag.el.
2116 (defalias 'mldrag-drag-mode-line 'mouse-drag-mode-line)
2117 (defalias 'mldrag-drag-vertical-line 'mouse-drag-vertical-line)
2118 (make-obsolete 'mldrag-drag-mode-line 'mouse-drag-mode-line "21.1")
2119 (make-obsolete 'mldrag-drag-vertical-line 'mouse-drag-vertical-line "21.1")
2120 (provide 'mldrag)
2122 ;; arch-tag: 9a710ce1-914a-4923-9b81-697f7bf82ab3
2123 ;;; mouse.el ends here