| blob | aa5dadf84ff170cb1b61c59f76fa0000922b515b |
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."
193 ;; Make a keymap in which our last command leads to a menu or
194 ;; default to the edit menu.
198 menu-bar-edit-menu))
199 uniq)
202 newmap))
205 "Given menu keymap,
206 if it defines exactly one submenu, return just that submenu.
207 Otherwise return the whole menu."
214 menubar
218 "Return a keymap equivalent to the menu bar.
219 The contents are the items that would be in the menu bar whether or
220 not it is actually displayed."
225 ;; If a keymap doesn't have a prompt string (a lazy
226 ;; programmer didn't bother to provide one), create it and
227 ;; insert it into the keymap; each keymap gets its own
228 ;; prompt. This is required for non-toolkit versions to
229 ;; display non-empty menu pane names.
242 minor-mode)))
245 menu))
259 ;; Supplying the list is faster than making a new map.
260 ;; FIXME: We have a problem here: we have to use the global/local/minor
261 ;; so they're displayed in the expected order, but later on in the command
262 ;; loop, they're actually looked up in the opposite order.
264 global-menu
265 local-menu
266 minor-mode-menus)))
269 "Pop up a mode-specific menu of mouse commands.
270 Default to the Edit menu if the major mode doesn't define a menu."
277 "Pop up a menu equivalent to the menu bar for keyboard EVENT with PREFIX.
278 The contents are the items that would be in the menu bar whether or
279 not it is actually displayed."
286 "Popup a menu like either `mouse-major-mode-menu' or `mouse-popup-menubar'.
287 Use the former if the menu bar is showing, otherwise the latter."
294 event prefix))
296 \f
297 ;; Commands that operate on windows.
304 ;; Give temporary modes such as isearch a chance to turn off.
308 "Delete the window you click on.
309 Do nothing if the frame has just one window.
310 This command must be bound to a mouse click."
317 "Select the window clicked on; don't move point."
329 "Delete the window clicked on, and create a new frame displaying its buffer."
340 "Delete all windows except the one you click on."
345 "Select Emacs window mouse is on, then split it vertically in half.
346 The window is split at the line clicked on.
347 This command must be bound to a mouse click."
361 "Select Emacs window mouse is on, then split it horizontally in half.
362 The window is split at the column clicked on.
363 This command must be bound to a mouse click."
377 "Return the (or a) window directly above WINDOW.
378 That means one whose bottom edge is at the same height as WINDOW's top edge."
383 above-window)
389 start-top)
395 above-window))
398 "Move the bottom of WINDOW up or down by GROWTH lines.
399 Move it down if GROWTH is positive, or up if GROWTH is negative.
400 If this would make WINDOW too short,
401 shrink the window or windows above it to make room."
407 "Move the top of WINDOW up or down by GROWTH lines.
408 Move it down if GROWTH is positive, or up if GROWTH is negative.
409 If this would make WINDOW too short, shrink the window or windows
410 above it to make room."
411 ;; Moving the top of WINDOW is actually moving the bottom of the
412 ;; window above.
418 "Change the height of a window by dragging on the mode or header line.
419 START-EVENT is the starting mouse-event of the drag action.
420 MODE-LINE-P non-nil means dragging a mode line; nil means a header line."
421 ;; Give temporary modes such as isearch a chance to turn off.
434 should-enlarge-minibuffer event mouse y top bot edges wconfig growth)
437 ;; if this is the bottommost ordinary window, then to
438 ;; move its modeline the minibuffer must be enlarged.
441 mode-line-p
446 ;; loop reading events and sampling the position of
447 ;; the mouse.
452 ;; do nothing if
453 ;; - there is a switch-frame event.
454 ;; - the mouse isn't in the frame that we started in
455 ;; - the mouse isn't in any Emacs frame
456 ;; drag if
457 ;; - there is a mouse-movement event
458 ;; - there is a scroll-bar-movement event
459 ;; (same as mouse movement for our purposes)
460 ;; quit if
461 ;; - there is a keyboard event or some other unknown event.
466 nil)
470 ;; Do not unread a drag-mouse-1 event since it will cause the
471 ;; selection of the window above when dragging the modeline
472 ;; above the selected window.
478 nil)
481 nil)
489 ;; compute size change needed
495 ;; The window's top includes the header line!
499 ;; Check for an error case.
505 ;; If we ever move, make sure we don't mistakenly treat
506 ;; some unexpected `mouse-1' final event as a sign that
507 ;; this whole drag was nothing more than a click.
510 ;; grow/shrink minibuffer?
514 ;; no. grow/shrink the selected window
515 ;(message "growth = %d" growth)
520 ;; if this window's growth caused another
521 ;; window to be deleted because it was too
522 ;; short, rescind the change.
523 ;;
524 ;; if size change caused space to be stolen
525 ;; from a window above this one, rescind the
526 ;; change, but only if we didn't grow/shrink
527 ;; the minibuffer. minibuffer size changes
528 ;; can cause all windows to shrink... no way
529 ;; around it.
533 mode-line-p
534 (/= top
536 ;; Choose right window.
537 start-event-window)))))
540 ;; Presumably if this was just a click, the last event should
541 ;; be `mouse-1', whereas if this did move the mouse, it should be
542 ;; a `drag-mouse-1'. In any case `on-link' would have been nulled
543 ;; above if there had been any significant mouse movement.
548 "Change the height of a window by dragging on the mode line."
553 "Change the height of a window by dragging on the header line.
554 Windows whose header-lines are at the top of the frame cannot be
555 resized by dragging their header-line."
557 ;; Changing the window's size by dragging its header-line when the
558 ;; header-line is at the top of the frame is somewhat strange,
559 ;; because the header-line doesn't move, so don't do it.
569 \f
571 "Return a window that is immediately to the right of WINDOW, or nil."
574 best best-right
586 best))
589 "Change the width of a window by dragging on the vertical line."
591 ;; Give temporary modes such as isearch a chance to turn off.
597 event mouse x left right edges growth
613 ;; loop reading events and sampling the position of
614 ;; the mouse.
618 ;; do nothing if
619 ;; - there is a switch-frame event.
620 ;; - the mouse isn't in the frame that we started in
621 ;; - the mouse isn't in any Emacs frame
622 ;; drag if
623 ;; - there is a mouse-movement event
624 ;; - there is a scroll-bar-movement event
625 ;; (same as mouse movement for our purposes)
626 ;; quit if
627 ;; - there is a keyboard event or some other unknown event
628 ;; unknown event.
632 nil)
640 nil)
642 nil)
645 ;; If the scroll bar is on the window's left,
646 ;; adjust the window on the left.
648 start-event-window
650 start-event-window))))
656 ;; scale back a move that would make the
657 ;; window too thin.
660 ;; compute size change needed
665 \f
667 "Move point to the position clicked on with the mouse.
668 This should be bound to a mouse click event type."
671 ;; Use event-end in case called from mouse-drag-region.
672 ;; If EVENT is a click, event-end and event-start give same value.
680 "Return non-nil if there's an active region that was set with the mouse."
687 "Set the region to the text dragged over, and copy to kill ring.
688 This should be bound to a mouse drag event."
695 ;; Don't set this-command to `kill-region', so a following
696 ;; C-w won't double the text in the kill ring. Ignore
697 ;; `last-command' so we don't append to a preceding kill.
701 ;; On a text terminal, bounce the cursor.
711 ;; Set transient-mark-mode for a little while.
716 transient-mark-mode))))
722 "The pause between scroll steps caused by mouse drags, in seconds.
723 If you drag the mouse beyond the edge of a window, Emacs scrolls the
724 window to bring the text beyond that edge into view, with a delay of
725 this many seconds between scroll steps. Scrolling stops when you move
726 the mouse back into the window, or release the button.
727 This variable's value may be non-integral.
728 Setting this to zero causes Emacs to scroll as fast as it can."
733 "The minimum number of lines scrolled by dragging mouse out of window.
734 Moving the mouse out the top or bottom edge of the window begins
735 scrolling repeatedly. The number of lines scrolled per repetition
736 is normally equal to the number of lines beyond the window edge that
737 the mouse has moved. However, it always scrolls at least the number
738 of lines specified by this variable."
743 "Scroll the window WINDOW, JUMP lines at a time, until new input arrives.
744 If OVERLAY is an overlay, let it stretch from START to the far edge of
745 the newly visible text.
746 Upon exit, point is at the far edge of the newly visible text."
762 ;; window-end doesn't reflect the window's new
763 ;; start position until the next redisplay.
769 ;; Now that we have scrolled WINDOW properly,
770 ;; put point back where it was for the redisplay
771 ;; so that we don't mess up the selected window.
783 "Set the region to the text that the mouse is dragged over.
784 Highlight the drag area as you move the mouse.
785 This must be bound to a button-down mouse event.
786 In Transient Mark mode, the highlighting remains as long as the mark
787 remains active. Otherwise, it remains until the next input event.
789 If the click is in the echo area, display the `*Messages*' buffer."
795 ;; Swallow the up-event.
800 ;; Give temporary modes such as isearch a chance to turn off.
806 "Look for a property at click position.
807 POS may be either a buffer position or a click position like
808 those returned from `event-start'. If the click position is on
809 a string, the text property PROPERTY is examined.
810 If this is nil or the click is not on a string, then
811 the corresponding buffer position is searched for PROPERTY.
812 If PROPERTY is encountered in one of those places,
813 its value is returned."
824 "Return non-nil if POS is on a link in the current buffer.
825 POS must be a buffer position in the current buffer or a mouse
826 event location in the selected window (see `event-start').
827 However, if `mouse-1-click-in-non-selected-windows' is non-nil,
828 POS may be a mouse event location in any window.
830 A clickable link is identified by one of the following methods:
832 - If the character at POS has a non-nil `follow-link' text or
833 overlay property, the value of that property determines what to do.
835 - If there is a local key-binding or a keybinding at position POS
836 for the `follow-link' event, the binding of that event determines
837 what to do.
839 The resulting value determine whether POS is inside a link:
841 - If the value is `mouse-face', POS is inside a link if there
842 is a non-nil `mouse-face' property at POS. Return t in this case.
844 - If the value is a function, FUNC, POS is inside a link if
845 the call \(FUNC POS) returns non-nil. Return the return value
846 from that call. Arg is \(posn-point POS) if POS is a mouse event.
848 - Otherwise, return the value itself.
850 The return value is interpreted as follows:
852 - If it is a string, the mouse-1 event is translated into the
853 first character of the string, i.e. the action of the mouse-1
854 click is the local or global binding of that character.
856 - If it is a vector, the mouse-1 event is translated into the
857 first element of that vector, i.e. the action of the mouse-1
858 click is the local or global binding of that event.
860 - Otherwise, the mouse-1 event is translated into a mouse-2 event
861 at the same position."
864 mouse-1-click-in-non-selected-windows
872 ;; FIXME: This seems questionable if the click is not in a buffer.
873 ;; Should we instead decide that `action' takes a `posn'?
881 "Fix help message MSG for `mouse-1-click-follows-link'."
901 msg)
904 do-mouse-drag-region-post-process)
905 "Track mouse drags by highlighting area between point and cursor.
906 The region will be defined with mark and point.
907 DO-MOUSE-DRAG-REGION-POST-PROCESS should only be used by
908 `mouse-drag-region'."
913 ;; We've recorded what we needed from the current buffer and
914 ;; window, now let's jump to the place of the event, where things
915 ;; are happening.
928 ;; Don't count the mode line.
933 ;; Use start-point before the intangibility
934 ;; treatment, in case we click on a link inside an
935 ;; intangible text.
941 ;; Suppress automatic hscrolling, because that is a nuisance
942 ;; when setting point near the right fringe (but see below).
945 event end end-point)
948 ;; In case the down click is in the middle of some intangible text,
949 ;; use the end of that text, and put it in START-POINT.
956 ;; Activate the region, using `mouse-start-end' to determine where
957 ;; to put point and mark (e.g., double-click will select a word).
966 ;; Track the mouse until we get a non-movement event.
973 ;; Automatic hscrolling did not occur during the call to
974 ;; `read-event'; but if the user subsequently drags the
975 ;; mouse, go ahead and hscroll.
983 end-point click-count)
989 nil start-point))
992 nil start-point))))))))
994 ;; Handle the terminating event if possible.
996 ;; Ensure that point is on the end of the last event.
1002 end-point click-count))
1004 ;; Find its binding.
1009 mouse-set-region))))))
1013 ;; If point has moved, finish the drag.
1016 do-mouse-drag-region-post-process
1020 ;; If point hasn't moved, run the binding of the
1021 ;; terminating up-event.
1027 ;; Don't run the up-event handler if the window
1028 ;; start changed in a redisplay after the
1029 ;; mouse-set-point for the down-mouse event at
1030 ;; the beginning of this function. When the
1031 ;; window start has changed, the up-mouse event
1032 ;; contains a different position due to the new
1033 ;; window contents, and point is set again.
1036 start-window-start)))
1040 ;; If we rebind to mouse-2, reselect previous selected
1041 ;; window, so that the mouse-2 event runs in the same
1042 ;; situation as if user had clicked it directly. Fixes
1043 ;; the bug reported by juri@jurta.org on 2005-12-27.
1048 ;; If this mouse click has never been done by the
1049 ;; user, it doesn't have the necessary property to be
1050 ;; interpreted correctly.
1084 \f
1085 ;; Commands to handle xterm-style multiple clicks.
1087 "Skip over word, over whitespace, or over identical punctuation.
1088 If DIR is positive skip forward; if negative, skip backward."
1092 ;; Here, we can't use skip-syntax-forward/backward because
1093 ;; they don't pay attention to word-separating-categories,
1094 ;; and thus they will skip over a true word boundary. So,
1095 ;; we simulate the original behavior by using forward-word.
1117 "Return a list of region bounds based on START and END according to MODE.
1118 If MODE is 0 then set point to (min START END), mark to (max START END).
1119 If MODE is 1 then set point to start of word at (min START END),
1120 mark to end of word at (max START END).
1121 If MODE is 2 then do the same for lines."
1125 end temp)))
1189 \f
1190 ;; Subroutine: set the mark where CLICK happened,
1191 ;; but don't do anything else.
1208 ;; Use reverse, not nreverse, since event-modifiers
1209 ;; does not copy the list it returns.
1212 event)))
1216 t
1218 nil)))
1220 ;; Momentarily show where the mark is, if highlighting doesn't show it.
1223 "Set mark at the position clicked on with the mouse.
1224 Display cursor at that position for a second.
1225 This must be bound to a mouse click."
1229 ;; We don't use save-excursion because that preserves the mark too.
1239 "Kill the region between point and the mouse click.
1251 "Insert the last stretch of killed text at the position clicked on.
1252 Also move point to one end of the text thus inserted (normally the end),
1253 and set mark at the beginning.
1255 If `mouse-yank-at-point' is non-nil, insert at point
1256 regardless of where you click."
1258 ;; Give temporary modes such as isearch a chance to turn off.
1261 ;; Without this, confusing things happen upon e.g. inserting into
1262 ;; the middle of an active region.
1270 "Insert the primary selection at the position clicked on.
1271 Move point to the end of the inserted text.
1272 If `mouse-yank-at-point' is non-nil, insert at point
1273 regardless of where you click."
1275 ;; Give temporary modes such as isearch a chance to turn off.
1277 ;; Without this, confusing things happen upon e.g. inserting into
1278 ;; the middle of an active region.
1288 ;; FIXME: What about xterm-mouse-mode etc.?
1296 "Copy the region between point and the mouse click in the kill ring.
1303 ;; This function used to delete the text between point and the mouse
1304 ;; whenever it was equal to the front of the kill ring, but some
1305 ;; people found that confusing.
1307 ;; The position of the last invocation of `mouse-save-then-kill'.
1311 ;; We must make our own undo boundaries
1312 ;; because they happen automatically only for the current buffer.
1315 ;; If we have no undo list in this buffer,
1316 ;; just delete.
1318 ;; Delete, but make the undo-list entry share with the kill ring.
1319 ;; First, delete just one char, so in case buffer is being modified
1320 ;; for the first time, the undo list records that fact.
1325 ;; Undo that deletion--but don't change the undo list!
1328 ;; Now delete the rest of the specified region,
1329 ;; but don't record it.
1335 ;; Search back in buffer-undo-list for the string
1336 ;; that came from deleting one character.
1339 ;; Replace it with an entry for the entire deleted text.
1345 "Set the region according to CLICK; the second time, kill it.
1346 CLICK should be a mouse click event.
1348 If the region is inactive, activate it temporarily. Set mark at
1349 the original point, and move point to the position of CLICK.
1351 If the region is already active, adjust it. Normally, do this by
1352 moving point or mark, whichever is closer, to CLICK. But if you
1353 have selected whole words or lines, move point or mark to the
1354 word or line boundary closest to CLICK instead.
1356 If `mouse-drag-copy-region' is non-nil, this command also saves the
1357 new region to the kill ring (replacing the previous kill if the
1358 previous region was just saved to the kill ring).
1360 If this command is called a second consecutive time with the same
1361 CLICK position, kill the region (or delete it
1362 if `mouse-drag-copy-region' is non-nil)"
1369 ;; Don't let a subsequent kill command append to this one.
1371 ;; Check if the user has multi-clicked to select words/lines.
1375 mouse-selection-click-count
1379 ;; If the user clicked without moving point, kill the region.
1380 ;; This also resets `mouse-selection-click-count'.
1385 ;; Region already saved in the previous click;
1386 ;; don't make a duplicate entry, just delete.
1392 ;; Otherwise, if there is a suitable region, adjust it by moving
1393 ;; one end (whichever is closer) to CLICK-PT.
1398 mouse-save-then-kill-posn)
1400 mouse-set-region))
1412 ;; Region already copied to kill-ring once, so replace.
1414 ;; Arrange for a repeated mouse-3 to kill the region.
1417 ;; Otherwise, set the mark where point is and move to CLICK-PT.
1429 \f
1440 ol)
1441 "An overlay which records the current secondary selection.
1446 ;; A marker which records the specified first end for a secondary selection.
1447 ;; May be nil.
1451 "Set one end of the secondary selection to the position clicked on.
1453 and complete the secondary selection."
1458 ;; Cancel any preexisting secondary selection.
1467 "Set the secondary selection to the text that the mouse is dragged over.
1468 This must be bound to a mouse drag event."
1472 beg
1479 'SECONDARY
1484 "Set the secondary selection to the text that the mouse is dragged over.
1485 Highlight the drag area as you move the mouse.
1486 This must be bound to a button-down mouse event.
1487 The function returns a non-nil value if it creates a secondary selection."
1498 ;; Don't count the mode line.
1504 ;; Double or triple press: make an initial selection
1505 ;; of one word or line.
1510 ;; Single-press: cancel any preexisting secondary selection.
1523 nil
1527 ;; Are we moving within the original window?
1531 click-count)))
1544 mouse-secondary-overlay start-point))
1547 mouse-secondary-overlay start-point)))))))))
1558 nil))
1560 'SECONDARY
1565 "Insert the secondary selection at the position clicked on.
1566 Move point to the end of the inserted text.
1567 If `mouse-yank-at-point' is non-nil, insert at point
1568 regardless of where you click."
1570 ;; Give temporary modes such as isearch a chance to turn off.
1579 "Kill the text in the secondary selection.
1580 This is intended more as a keyboard command than as a mouse command
1581 but it can work as either one.
1583 The current buffer (in case of keyboard use), or the buffer clicked on,
1584 must be the one that the secondary selection is in. This requirement
1585 is to prevent accidents."
1601 "Set the secondary selection and save it to the kill ring.
1602 The second time, kill it. CLICK should be a mouse click event.
1604 If you have not called `mouse-start-secondary' in the clicked
1605 buffer, activate the secondary selection and set it between point
1606 and the click position CLICK.
1608 Otherwise, adjust the bounds of the secondary selection.
1609 Normally, do this by moving its beginning or end, whichever is
1610 closer, to CLICK. But if you have selected whole words or lines,
1611 adjust to the word or line boundary closest to CLICK instead.
1613 If this command is called a second consecutive time with the same
1614 CLICK position, kill the secondary selection."
1621 ;; Don't let a subsequent kill command append to this one.
1623 ;; Check if the user has multi-clicked to select words/lines.
1626 mouse-secondary-click-count
1634 ;; If the secondary selection is not active in BUF, activate it.
1644 ;; If the user clicked without moving point, delete the secondary
1645 ;; selection. This also resets `mouse-secondary-click-count'.
1654 ;; Otherwise, if there is a suitable secondary selection overlay,
1655 ;; adjust it by moving one end (whichever is closer) to CLICK-PT.
1664 ;; If the front of the kill ring comes from an immediately
1665 ;; previous use of this command, replace the entry.
1669 t)
1675 ;; Otherwise, set the secondary selection overlay.
1679 ;; All we have is one end of a selection, so put the other
1680 ;; end here.
1686 ;; Finally, set the window system's secondary selection.
1694 \f
1696 "Number of buffers in one pane (submenu) of the buffer menu.
1697 If we have lots of buffers, divide them into groups of
1698 `mouse-buffer-menu-maxlen' and make a pane (or submenu) for each one."
1705 will split the buffer menu by the major modes (see
1706 `mouse-buffer-menu-mode-groups') or just by menu length.
1707 Set to 1 (or even 0!) if you want to group by major mode always, and to
1708 a large number if you prefer a mixed multitude. The default is 4."
1726 Each element has the form (REGEXP . GROUPNAME).
1730 "Pop up a menu of buffers for selection with the mouse.
1731 This switches buffers in the window that you clicked on,
1732 and selects that window."
1736 ;; Make an alist of elements that look like (MENU-ITEM . BUFFER).
1738 ;; Divide all buffers into buckets for various major modes.
1739 ;; Each bucket looks like (MODE NAMESTRING BUFFERS...).
1749 adjusted-major-mode
1754 ;; Compute the sum of squares of sizes of the major-mode buckets.
1759 (+ sum-of-squares
1764 ;; Subdividing by major modes really helps, so let's do it.
1766 ;; Sort the list to put the most popular major modes first.
1771 ;; Make a separate submenu for each major mode
1772 ;; that has more than one buffer,
1773 ;; unless all the remaining buffers are less than 1/10 of them.
1783 this-mode-list)
1784 subdivided-menus))))
1788 ;; If any major modes are left over,
1789 ;; make a single submenu for them.
1793 ;; we don't need split-by-major-mode any more,
1794 ;; so we can ditch it with nconc.
1799 subdivided-menus)))))
1810 window))
1816 head)
1845 list-buffers-directory)))
1847 elt)
1848 head))))
1850 ;; Compensate for the reversal that the above loop does.
1854 ;; If we have lots of buffers, divide them into groups of 20
1855 ;; and make a pane (or submenu) for each one.
1860 ;; Pull off the next mouse-buffer-menu-maxlen buffers
1861 ;; and make them the next element of sublist.
1865 nil))
1867 sublists))
1871 ;; Few buffers--put them all in one pane.
1873 \f
1877 ;; Font selection.
1896 ;; For these, we specify the pixel height and width.
1925 ;; We don't seem to have these; who knows what they are.
1926 ;; ("fg-18" "fg-18")
1927 ;; ("fg-25" "fg-25")
1928 ("lucidasanstypewriter-12" "-b&h-lucidatypewriter-medium-r-normal-sans-*-120-*-*-*-*-iso8859-1")
1929 ("lucidasanstypewriter-bold-14" "-b&h-lucidatypewriter-bold-r-normal-sans-*-140-*-*-*-*-iso8859-1")
1932 ;; ("lucidatypewriter-bold-r-24" "-b&h-lucidatypewriter-bold-r-normal-sans-24-240-75-75-m-140-iso8859-1")
1933 ;; ("fixed-medium-20" "-misc-fixed-medium-*-*-*-20-*-*-*-*-*-*-*")
1934 )))
1940 ;; For these, we specify the point height.
1965 ))))
1971 "Prompt for a font name, using `x-popup-menu', and return it."
1978 last-nonmenu-event
1986 "Set the default font for the selected frame.
1987 The argument FONTS is a list of font names; the first valid font
1988 in this list is used.
1990 When called interactively, pop up a menu and allow the user to
1991 choose a font."
1997 last-nonmenu-event
1999 ;; Append list of fontsets currently defined.
2021 "Show a menu for changing the default face in the current buffer."
2027 nil ; regenerate new fonts
2028 ;; Initialize mouse-appearance-menu-map
2037 ;; Font selector
2041 ;; If the select-font is unavailable, construct a menu.
2050 font-symbol)
2053 '("--"))
2054 (setq font-symbol (intern (cadr font)))
2055 (define-key submenu-map (vector font-symbol)
2056 (list 'menu-item (car font) font-symbol)))))
2057 (define-key font-submenu (vector (intern submenu-name))
2058 (list 'menu-item submenu-name submenu-map))))
2059 (define-key mouse-appearance-menu-map [font-submenu]
2060 (list 'menu-item "Change Text Font" font-submenu)))))
2061 (let ((choice (x-popup-menu event mouse-appearance-menu-map)))
2062 (setq choice (nth (1- (length choice)) choice))
2063 (cond ((eq choice 'text-scale-increase)
2064 (text-scale-increase 1))
2065 ((eq choice 'text-scale-decrease)
2066 (text-scale-increase -1))
2067 ((eq choice 'face-remap-reset-base)
2068 (text-scale-mode 0)
2069 (buffer-face-mode 0))
2070 (choice
2071 ;; Either choice == 'x-select-font, or choice is a
2072 ;; symbol whose name is a font.
2073 (buffer-face-mode-invoke (font-face-attributes
2074 (if (eq choice 'x-select-font)
2075 (x-select-font)
2076 (symbol-name choice)))
2077 t
2078 (called-interactively-p 'interactive))))))))
2080 \f
2081 ;;; Bindings for mouse commands.
2083 (define-key global-map [down-mouse-1] 'mouse-drag-region)
2084 (global-set-key [mouse-1] 'mouse-set-point)
2085 (global-set-key [drag-mouse-1] 'mouse-set-region)
2087 ;; These are tested for in mouse-drag-region.
2088 (global-set-key [double-mouse-1] 'mouse-set-point)
2089 (global-set-key [triple-mouse-1] 'mouse-set-point)
2091 ;; Clicking on the fringes causes hscrolling:
2092 (global-set-key [left-fringe mouse-1] 'mouse-set-point)
2093 (global-set-key [right-fringe mouse-1] 'mouse-set-point)
2095 (global-set-key [mouse-2] 'mouse-yank-primary)
2096 ;; Allow yanking also when the corresponding cursor is "in the fringe".
2097 (global-set-key [right-fringe mouse-2] 'mouse-yank-at-click)
2098 (global-set-key [left-fringe mouse-2] 'mouse-yank-at-click)
2099 (global-set-key [mouse-3] 'mouse-save-then-kill)
2100 (global-set-key [right-fringe mouse-3] 'mouse-save-then-kill)
2101 (global-set-key [left-fringe mouse-3] 'mouse-save-then-kill)
2103 ;; By binding these to down-going events, we let the user use the up-going
2104 ;; event to make the selection, saving a click.
2105 (global-set-key [C-down-mouse-1] 'mouse-buffer-menu)
2106 (if (not (eq system-type 'ms-dos))
2107 (global-set-key [S-down-mouse-1] 'mouse-appearance-menu))
2108 ;; C-down-mouse-2 is bound in facemenu.el.
2109 (global-set-key [C-down-mouse-3]
2110 `(menu-item ,(purecopy "Menu Bar") ignore
2111 :filter (lambda (_)
2112 (if (zerop (or (frame-parameter nil 'menu-bar-lines) 0))
2113 (mouse-menu-bar-map)
2114 (mouse-menu-major-mode-map)))))
2116 ;; Binding mouse-1 to mouse-select-window when on mode-, header-, or
2117 ;; vertical-line prevents Emacs from signaling an error when the mouse
2118 ;; button is released after dragging these lines, on non-toolkit
2119 ;; versions.
2120 (global-set-key [mode-line mouse-1] 'mouse-select-window)
2121 (global-set-key [mode-line drag-mouse-1] 'mouse-select-window)
2122 (global-set-key [mode-line down-mouse-1] 'mouse-drag-mode-line)
2123 (global-set-key [header-line down-mouse-1] 'mouse-drag-header-line)
2124 (global-set-key [header-line mouse-1] 'mouse-select-window)
2125 (global-set-key [mode-line mouse-2] 'mouse-delete-other-windows)
2126 (global-set-key [mode-line mouse-3] 'mouse-delete-window)
2127 (global-set-key [mode-line C-mouse-2] 'mouse-split-window-horizontally)
2128 (global-set-key [vertical-scroll-bar C-mouse-2] 'mouse-split-window-vertically)
2129 (global-set-key [vertical-line C-mouse-2] 'mouse-split-window-vertically)
2130 (global-set-key [vertical-line down-mouse-1] 'mouse-drag-vertical-line)
2131 (global-set-key [vertical-line mouse-1] 'mouse-select-window)
2133 (provide 'mouse)
2135 ;;; mouse.el ends here