| blob | 538e6a500bb74cf29f9278bca43c31f6ac9a6a2c |
1 ;;; mouse.el --- window system-independent mouse support -*- lexical-binding: t -*-
3 ;; Copyright (C) 1993-1995, 1999-2013 Free Software Foundation, Inc.
5 ;; Maintainer: FSF
6 ;; Keywords: hardware, mouse
7 ;; Package: emacs
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, copy to kill-ring upon mouse adjustments of the region.
48 addition to mouse drags."
54 "Non-nil means that clicking Mouse-1 on a link follows the link.
56 With the default setting, an ordinary Mouse-1 click on a link
57 performs the same action as Mouse-2 on that link, while a longer
58 Mouse-1 click \(hold down the Mouse-1 button for more than 450
59 milliseconds) performs the original Mouse-1 binding \(which
60 typically sets point where you click the mouse).
62 If value is an integer, the time elapsed between pressing and
63 releasing the mouse button determines whether to follow the link
64 or perform the normal Mouse-1 action (typically set point).
65 The absolute numeric value specifies the maximum duration of a
67 short click follows the link, and a longer click performs the
68 normal action. A negative value gives the opposite behavior.
70 If value is `double', a double click follows the link.
72 Otherwise, a single Mouse-1 click unconditionally follows the link.
74 Note that dragging the mouse never follows the link.
76 This feature only works in modes that specifically identify
77 clickable text as links, so it may not work with some external
78 packages. See `mouse-on-link-p' for details."
87 "If non-nil, a Mouse-1 click also follows links in non-selected windows.
89 If nil, a Mouse-1 click on a link in a non-selected window performs
90 the normal mouse-1 binding, typically selects the window and sets
91 point at the click position."
97 \f
98 ;; Provide a mode-specific menu on a mouse button.
101 "Popup the given menu and call the selected option.
102 MENU can be a keymap, an easymenu-style menu or a list of keymaps as for
103 `x-popup-menu'.
104 The menu is shown at the place where POSITION specifies. About
105 the form of POSITION, see `popup-menu-normalize-position'.
106 PREFIX is the prefix argument (if any) to pass to the command."
114 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 "Convert the POSITION to the form which `popup-menu' expects internally.
155 POSITION can an event, a posn- value, a value having
156 form ((XOFFSET YOFFSET) WINDOW), or nil.
157 If nil, the current mouse position is used."
159 ;; nil -> mouse cursor position
160 (`nil
163 ;; Value returned from `event-end' or `posn-at-point'.
168 ;; Event.
174 "Show menu for minor mode specified by INDICATOR.
175 Interactively, INDICATOR is read using completion.
176 If there is no menu defined for the minor mode, then create one with
177 items `Turn Off' and `Help'."
180 "Minor mode indicator: "
191 ,indicator
199 "Show minor-mode menu for EVENT on minor modes area of the mode line."
210 ;; Make a keymap in which our last command leads to a menu or
211 ;; default to the edit menu.
215 menu-bar-edit-menu)))
218 newmap))
221 "Return menu keybar MENUBAR, or a lone submenu inside it.
222 If MENUBAR defines exactly one submenu, return just that submenu.
223 Otherwise, return MENUBAR."
230 menubar
234 "Return a keymap equivalent to the menu bar.
235 The contents are the items that would be in the menu bar whether or
236 not it is actually displayed."
241 ;; If a keymap doesn't have a prompt string (a lazy
242 ;; programmer didn't bother to provide one), create it and
243 ;; insert it into the keymap; each keymap gets its own
244 ;; prompt. This is required for non-toolkit versions to
245 ;; display non-empty menu pane names.
258 minor-mode)))
261 menu))
275 ;; Supplying the list is faster than making a new map.
276 ;; FIXME: We have a problem here: we have to use the global/local/minor
277 ;; so they're displayed in the expected order, but later on in the command
278 ;; loop, they're actually looked up in the opposite order.
280 global-menu
281 local-menu
282 minor-mode-menus)))
285 "Pop up a mode-specific menu of mouse commands.
286 Default to the Edit menu if the major mode doesn't define a menu."
293 "Pop up a menu equivalent to the menu bar for keyboard EVENT with PREFIX.
294 The contents are the items that would be in the menu bar whether or
295 not it is actually displayed."
302 "Popup a menu like either `mouse-major-mode-menu' or `mouse-popup-menubar'.
303 Use the former if the menu bar is showing, otherwise the latter."
311 event prefix))
312 \f
313 ;; Commands that operate on windows.
320 ;; Give temporary modes such as isearch a chance to turn off.
324 "Delete the window you click on.
325 Do nothing if the frame has just one window.
326 This command must be bound to a mouse click."
333 "Select the window clicked on; don't move point."
345 "Delete the window clicked on, and create a new frame displaying its buffer."
356 "Delete all windows except the one you click on."
361 "Select Emacs window mouse is on, then split it vertically in half.
362 The window is split at the line clicked on.
363 This command must be bound to a mouse click."
377 "Select Emacs window mouse is on, then split it horizontally in half.
378 The window is split at the column clicked on.
379 This command must be bound to a mouse click."
392 ;; `mouse-drag-line' is now the common routine for handling all line
393 ;; dragging events combining the earlier `mouse-drag-mode-line-1' and
394 ;; `mouse-drag-vertical-line'. It should improve the behavior of line
395 ;; dragging wrt Emacs 23 as follows:
397 ;; (1) Gratuitous error messages and restrictions have been (hopefully)
398 ;; removed. (The help-echo that dragging the mode-line can resize a
399 ;; one-window-frame's window will still show through via bindings.el.)
401 ;; (2) No gratuitous selection of other windows should happen. (This
402 ;; has not been completely fixed for mouse-autoselected windows yet.)
404 ;; (3) Mouse clicks below a scroll-bar should pass through via unread
405 ;; command events.
407 ;; Note that `window-in-direction' replaces `mouse-drag-window-above'
408 ;; and `mouse-drag-vertical-line-rightward-window' with Emacs 24.1.
411 "Drag a mode line, header line, or vertical line with the mouse.
412 START-EVENT is the starting mouse-event of the drag action. LINE
413 must be one of the symbols `header', `mode', or `vertical'."
414 ;; Give temporary modes such as isearch a chance to turn off.
428 finished event position growth dragged)
431 ;; Check whether header-line can be dragged at all.
436 ;; Check whether mode-line can be dragged at all.
438 ;; Allow resizing the minibuffer window if it's on the same
439 ;; frame as and immediately below the clicked window, and
440 ;; it's active or `resize-mini-windows' is nil.
449 ;; Get the window to adjust for the vertical case. If the
450 ;; scroll bar is on the window's right or there's no scroll bar
451 ;; at all, adjust the window where the start-event occurred. If
452 ;; the scroll bar is on the start-event window's left, adjust
453 ;; the window on the left of it.
457 ;; Start tracking.
459 ;; Loop reading events and sampling the position of the mouse.
463 ;; Do nothing if
464 ;; - there is a switch-frame event.
465 ;; - the mouse isn't in the frame that we started in
466 ;; - the mouse isn't in any Emacs frame
467 ;; Drag if
468 ;; - there is a mouse-movement event
469 ;; - there is a scroll-bar-movement event (Why? -- cyd)
470 ;; (same as mouse movement for our purposes)
471 ;; Quit if
472 ;; - there is a keyboard event or some other unknown event.
477 nil)
480 ;; Do not unread a drag-mouse-1 event to avoid selecting
481 ;; some other window. For vertical line dragging do not
482 ;; unread mouse-1 events either (but only if we dragged at
483 ;; least once to allow mouse-1 clicks get through).
492 nil)
494 ;; Drag vertical divider.
503 ;; Drag horizontal divider.
507 ;; The window's top includes the header line!
512 growth
514 ;; Process the terminating event.
517 ;; If mouse-2 has never been done by the user, it doesn't have
518 ;; the necessary property to be interpreted correctly.
524 "Change the height of a window by dragging on the mode line."
529 "Change the height of a window by dragging on the header line."
534 "Change the width of a window by dragging on the vertical line."
537 \f
539 "Move point to the position clicked on with the mouse.
540 This should be bound to a mouse click event type."
543 ;; Use event-end in case called from mouse-drag-region.
544 ;; If EVENT is a click, event-end and event-start give same value.
552 "Return non-nil if there's an active region that was set with the mouse."
559 "Set the region to the text dragged over, and copy to kill ring.
560 This should be bound to a mouse drag event.
561 See the `mouse-drag-copy-region' variable to control whether this
562 command alters the kill ring or not."
569 ;; Don't set this-command to `kill-region', so a following
570 ;; C-w won't double the text in the kill ring. Ignore
571 ;; `last-command' so we don't append to a preceding kill.
575 ;; On a text terminal, bounce the cursor.
585 ;; Set transient-mark-mode for a little while.
590 transient-mark-mode))))
596 "The pause between scroll steps caused by mouse drags, in seconds.
597 If you drag the mouse beyond the edge of a window, Emacs scrolls the
598 window to bring the text beyond that edge into view, with a delay of
599 this many seconds between scroll steps. Scrolling stops when you move
600 the mouse back into the window, or release the button.
601 This variable's value may be non-integral.
602 Setting this to zero causes Emacs to scroll as fast as it can."
607 "The minimum number of lines scrolled by dragging mouse out of window.
608 Moving the mouse out the top or bottom edge of the window begins
609 scrolling repeatedly. The number of lines scrolled per repetition
610 is normally equal to the number of lines beyond the window edge that
611 the mouse has moved. However, it always scrolls at least the number
612 of lines specified by this variable."
617 "Scroll the window WINDOW, JUMP lines at a time, until new input arrives.
618 If OVERLAY is an overlay, let it stretch from START to the far edge of
619 the newly visible text.
620 Upon exit, point is at the far edge of the newly visible text."
636 ;; window-end doesn't reflect the window's new
637 ;; start position until the next redisplay.
643 ;; Now that we have scrolled WINDOW properly,
644 ;; put point back where it was for the redisplay
645 ;; so that we don't mess up the selected window.
657 "Set the region to the text that the mouse is dragged over.
658 Highlight the drag area as you move the mouse.
659 This must be bound to a button-down mouse event.
660 In Transient Mark mode, the highlighting remains as long as the mark
661 remains active. Otherwise, it remains until the next input event.
663 If the click is in the echo area, display the `*Messages*' buffer."
665 ;; Give temporary modes such as isearch a chance to turn off.
671 "Look for a property at click position.
672 POS may be either a buffer position or a click position like
673 those returned from `event-start'. If the click position is on
674 a string, the text property PROPERTY is examined.
675 If this is nil or the click is not on a string, then
676 the corresponding buffer position is searched for PROPERTY.
677 If PROPERTY is encountered in one of those places,
678 its value is returned."
689 "Return non-nil if POS is on a link in the current buffer.
690 POS must be a buffer position in the current buffer or a mouse
691 event location in the selected window (see `event-start').
692 However, if `mouse-1-click-in-non-selected-windows' is non-nil,
693 POS may be a mouse event location in any window.
695 A clickable link is identified by one of the following methods:
697 - If the character at POS has a non-nil `follow-link' text or
698 overlay property, the value of that property determines what to do.
700 - If there is a local key-binding or a keybinding at position POS
701 for the `follow-link' event, the binding of that event determines
702 what to do.
704 The resulting value determine whether POS is inside a link:
706 - If the value is `mouse-face', POS is inside a link if there
707 is a non-nil `mouse-face' property at POS. Return t in this case.
709 - If the value is a function, FUNC, POS is inside a link if
710 the call \(FUNC POS) returns non-nil. Return the return value
711 from that call. Arg is \(posn-point POS) if POS is a mouse event.
713 - Otherwise, return the value itself.
715 The return value is interpreted as follows:
717 - If it is a string, the mouse-1 event is translated into the
718 first character of the string, i.e. the action of the mouse-1
719 click is the local or global binding of that character.
721 - If it is a vector, the mouse-1 event is translated into the
722 first element of that vector, i.e. the action of the mouse-1
723 click is the local or global binding of that event.
725 - Otherwise, the mouse-1 event is translated into a mouse-2 event
726 at the same position."
729 mouse-1-click-in-non-selected-windows
737 ;; FIXME: This seems questionable if the click is not in a buffer.
738 ;; Should we instead decide that `action' takes a `posn'?
746 "Fix help message MSG for `mouse-1-click-follows-link'."
766 msg)
769 do-mouse-drag-region-post-process)
770 "Track mouse drags by highlighting area between point and cursor.
771 The region will be defined with mark and point.
772 DO-MOUSE-DRAG-REGION-POST-PROCESS should only be used by
773 `mouse-drag-region'."
779 ;; We've recorded what we needed from the current buffer and
780 ;; window, now let's jump to the place of the event, where things
781 ;; are happening.
794 ;; Don't count the mode line.
797 ;; Use start-point before the intangibility
798 ;; treatment, in case we click on a link inside
799 ;; intangible text.
805 ;; Suppress automatic hscrolling, because that is a nuisance
806 ;; when setting point near the right fringe (but see below).
809 moved-off-start event end end-point)
812 ;; In case the down click is in the middle of some intangible text,
813 ;; use the end of that text, and put it in START-POINT.
820 ;; Activate the region, using `mouse-start-end' to determine where
821 ;; to put point and mark (e.g., double-click will select a word).
830 ;; Track the mouse until we get a non-movement event.
837 ;; Automatic hscrolling did not occur during the call to
838 ;; `read-event'; but if the user subsequently drags the
839 ;; mouse, go ahead and hscroll.
844 ;; Note whether the mouse has left the starting position.
850 end-point click-count)
856 nil start-point))
859 nil start-point))))))))
861 ;; Handle the terminating event if possible.
863 ;; Ensure that point is on the end of the last event.
869 end-point click-count))
871 ;; Find its binding.
876 mouse-set-region))))))
880 ;; If point has moved, finish the drag.
883 do-mouse-drag-region-post-process
887 ;; Otherwise, run binding of terminating up-event.
896 ;; Don't run the up-event handler if the window
897 ;; start changed in a redisplay after the
898 ;; mouse-set-point for the down-mouse event at
899 ;; the beginning of this function. When the
900 ;; window start has changed, the up-mouse event
901 ;; contains a different position due to the new
902 ;; window contents, and point is set again.
905 start-window-start)))
909 ;; If we rebind to mouse-2, reselect previous selected
910 ;; window, so that the mouse-2 event runs in the same
911 ;; situation as if user had clicked it directly. Fixes
912 ;; the bug reported by juri@jurta.org on 2005-12-27.
917 ;; If this mouse click has never been done by the
918 ;; user, it doesn't have the necessary property to be
919 ;; interpreted correctly.
953 \f
954 ;; Commands to handle xterm-style multiple clicks.
956 "Skip over word, over whitespace, or over identical punctuation.
957 If DIR is positive skip forward; if negative, skip backward."
961 ;; Here, we can't use skip-syntax-forward/backward because
962 ;; they don't pay attention to word-separating-categories,
963 ;; and thus they will skip over a true word boundary. So,
964 ;; we simulate the original behavior by using forward-word.
986 "Return a list of region bounds based on START and END according to MODE.
987 If MODE is 0 then set point to (min START END), mark to (max START END).
988 If MODE is 1 then set point to start of word at (min START END),
989 mark to end of word at (max START END).
990 If MODE is 2 then do the same for lines."
994 end temp)))
1058 \f
1059 ;; Subroutine: set the mark where CLICK happened,
1060 ;; but don't do anything else.
1077 ;; Use reverse, not nreverse, since event-modifiers
1078 ;; does not copy the list it returns.
1081 event)))
1085 t
1087 nil)))
1089 ;; Momentarily show where the mark is, if highlighting doesn't show it.
1092 "Set mark at the position clicked on with the mouse.
1093 Display cursor at that position for a second.
1094 This must be bound to a mouse click."
1098 ;; We don't use save-excursion because that preserves the mark too.
1108 "Kill the region between point and the mouse click.
1120 "Insert the last stretch of killed text at the position clicked on.
1121 Also move point to one end of the text thus inserted (normally the end),
1122 and set mark at the beginning.
1124 If `mouse-yank-at-point' is non-nil, insert at point
1125 regardless of where you click."
1127 ;; Give temporary modes such as isearch a chance to turn off.
1130 ;; Without this, confusing things happen upon e.g. inserting into
1131 ;; the middle of an active region.
1139 "Insert the primary selection at the position clicked on.
1140 Move point to the end of the inserted text, and set mark at
1141 beginning. If `mouse-yank-at-point' is non-nil, insert at point
1142 regardless of where you click."
1144 ;; Give temporary modes such as isearch a chance to turn off.
1146 ;; Without this, confusing things happen upon e.g. inserting into
1147 ;; the middle of an active region.
1155 ;; MS-Windows emulates PRIMARY in x-get-selection, but not
1156 ;; in x-get-selection-value (the latter only accesses the
1157 ;; clipboard). So try PRIMARY first, in case they selected
1158 ;; something with the mouse in the current Emacs session.
1162 ;; On X, x-get-selection-value supports more formats and
1163 ;; encodings, so use it in preference to x-get-selection.
1166 ;; FIXME: What about xterm-mouse-mode etc.?
1175 "Copy the region between point and the mouse click in the kill ring.
1182 ;; This function used to delete the text between point and the mouse
1183 ;; whenever it was equal to the front of the kill ring, but some
1184 ;; people found that confusing.
1186 ;; The position of the last invocation of `mouse-save-then-kill'.
1190 ;; We must make our own undo boundaries
1191 ;; because they happen automatically only for the current buffer.
1194 ;; If we have no undo list in this buffer,
1195 ;; just delete.
1197 ;; Delete, but make the undo-list entry share with the kill ring.
1198 ;; First, delete just one char, so in case buffer is being modified
1199 ;; for the first time, the undo list records that fact.
1204 ;; Undo that deletion--but don't change the undo list!
1207 ;; Now delete the rest of the specified region,
1208 ;; but don't record it.
1214 ;; Search back in buffer-undo-list for the string
1215 ;; that came from deleting one character.
1218 ;; Replace it with an entry for the entire deleted text.
1224 "Set the region according to CLICK; the second time, kill it.
1225 CLICK should be a mouse click event.
1227 If the region is inactive, activate it temporarily. Set mark at
1228 the original point, and move point to the position of CLICK.
1230 If the region is already active, adjust it. Normally, do this by
1231 moving point or mark, whichever is closer, to CLICK. But if you
1232 have selected whole words or lines, move point or mark to the
1233 word or line boundary closest to CLICK instead.
1235 If `mouse-drag-copy-region' is non-nil, this command also saves the
1236 new region to the kill ring (replacing the previous kill if the
1237 previous region was just saved to the kill ring).
1239 If this command is called a second consecutive time with the same
1240 CLICK position, kill the region (or delete it
1241 if `mouse-drag-copy-region' is non-nil)"
1248 ;; Don't let a subsequent kill command append to this one.
1250 ;; Check if the user has multi-clicked to select words/lines.
1254 mouse-selection-click-count
1258 ;; If the user clicked without moving point, kill the region.
1259 ;; This also resets `mouse-selection-click-count'.
1264 ;; Region already saved in the previous click;
1265 ;; don't make a duplicate entry, just delete.
1271 ;; Otherwise, if there is a suitable region, adjust it by moving
1272 ;; one end (whichever is closer) to CLICK-PT.
1277 mouse-save-then-kill-posn)
1279 mouse-set-region))
1291 ;; Region already copied to kill-ring once, so replace.
1293 ;; Arrange for a repeated mouse-3 to kill the region.
1296 ;; Otherwise, set the mark where point is and move to CLICK-PT.
1308 \f
1319 ol)
1320 "An overlay which records the current secondary selection.
1325 ;; A marker which records the specified first end for a secondary selection.
1326 ;; May be nil.
1330 "Set one end of the secondary selection to the position clicked on.
1332 and complete the secondary selection."
1337 ;; Cancel any preexisting secondary selection.
1346 "Set the secondary selection to the text that the mouse is dragged over.
1347 This must be bound to a mouse drag event."
1351 beg
1358 'SECONDARY
1363 "Set the secondary selection to the text that the mouse is dragged over.
1364 Highlight the drag area as you move the mouse.
1365 This must be bound to a button-down mouse event.
1366 The function returns a non-nil value if it creates a secondary selection."
1377 ;; Don't count the mode line.
1383 ;; Double or triple press: make an initial selection
1384 ;; of one word or line.
1389 ;; Single-press: cancel any preexisting secondary selection.
1402 nil
1406 ;; Are we moving within the original window?
1410 click-count)))
1423 mouse-secondary-overlay start-point))
1426 mouse-secondary-overlay start-point)))))))))
1437 nil))
1439 'SECONDARY
1444 "Insert the secondary selection at the position clicked on.
1445 Move point to the end of the inserted text.
1446 If `mouse-yank-at-point' is non-nil, insert at point
1447 regardless of where you click."
1449 ;; Give temporary modes such as isearch a chance to turn off.
1458 "Kill the text in the secondary selection.
1459 This is intended more as a keyboard command than as a mouse command
1460 but it can work as either one.
1462 The current buffer (in case of keyboard use), or the buffer clicked on,
1463 must be the one that the secondary selection is in. This requirement
1464 is to prevent accidents."
1480 "Set the secondary selection and save it to the kill ring.
1481 The second time, kill it. CLICK should be a mouse click event.
1483 If you have not called `mouse-start-secondary' in the clicked
1484 buffer, activate the secondary selection and set it between point
1485 and the click position CLICK.
1487 Otherwise, adjust the bounds of the secondary selection.
1488 Normally, do this by moving its beginning or end, whichever is
1489 closer, to CLICK. But if you have selected whole words or lines,
1490 adjust to the word or line boundary closest to CLICK instead.
1492 If this command is called a second consecutive time with the same
1493 CLICK position, kill the secondary selection."
1500 ;; Don't let a subsequent kill command append to this one.
1502 ;; Check if the user has multi-clicked to select words/lines.
1505 mouse-secondary-click-count
1513 ;; If the secondary selection is not active in BUF, activate it.
1523 ;; If the user clicked without moving point, delete the secondary
1524 ;; selection. This also resets `mouse-secondary-click-count'.
1533 ;; Otherwise, if there is a suitable secondary selection overlay,
1534 ;; adjust it by moving one end (whichever is closer) to CLICK-PT.
1543 ;; If the front of the kill ring comes from an immediately
1544 ;; previous use of this command, replace the entry.
1548 t)
1554 ;; Otherwise, set the secondary selection overlay.
1558 ;; All we have is one end of a selection, so put the other
1559 ;; end here.
1565 ;; Finally, set the window system's secondary selection.
1573 \f
1575 "Number of buffers in one pane (submenu) of the buffer menu.
1576 If we have lots of buffers, divide them into groups of
1577 `mouse-buffer-menu-maxlen' and make a pane (or submenu) for each one."
1584 will split the buffer menu by the major modes (see
1585 `mouse-buffer-menu-mode-groups') or just by menu length.
1586 Set to 1 (or even 0!) if you want to group by major mode always, and to
1587 a large number if you prefer a mixed multitude. The default is 4."
1603 ("Threads\\|Memory\\|Disassembly\\|Breakpoints\\|Frames\\|Locals\\|Registers\\|Inferior I/O\\|Debugger"
1607 Each element has the form (REGEXP . GROUPNAME).
1611 "Pop up a menu of buffers for selection with the mouse.
1612 This switches buffers in the window that you clicked on,
1613 and selects that window."
1617 ;; Make an alist of elements that look like (MENU-ITEM . BUFFER).
1619 ;; Divide all buffers into buckets for various major modes.
1620 ;; Each bucket looks like (MODE NAMESTRING BUFFERS...).
1630 adjusted-major-mode
1635 ;; Compute the sum of squares of sizes of the major-mode buckets.
1640 (+ sum-of-squares
1645 ;; Subdividing by major modes really helps, so let's do it.
1647 ;; Sort the list to put the most popular major modes first.
1652 ;; Make a separate submenu for each major mode
1653 ;; that has more than one buffer,
1654 ;; unless all the remaining buffers are less than 1/10 of them.
1664 this-mode-list)
1665 subdivided-menus))))
1669 ;; If any major modes are left over,
1670 ;; make a single submenu for them.
1674 ;; we don't need split-by-major-mode any more,
1675 ;; so we can ditch it with nconc.
1680 subdivided-menus)))))
1691 window))
1697 head)
1726 list-buffers-directory)))
1728 elt)
1729 head))))
1731 ;; Compensate for the reversal that the above loop does.
1735 ;; If we have lots of buffers, divide them into groups of 20
1736 ;; and make a pane (or submenu) for each one.
1741 ;; Pull off the next mouse-buffer-menu-maxlen buffers
1742 ;; and make them the next element of sublist.
1746 nil))
1748 sublists))
1752 ;; Few buffers--put them all in one pane.
1754 \f
1758 ;; Font selection.
1777 ;; For these, we specify the pixel height and width.
1806 ;; We don't seem to have these; who knows what they are.
1807 ;; ("fg-18" "fg-18")
1808 ;; ("fg-25" "fg-25")
1809 ("lucidasanstypewriter-12" "-b&h-lucidatypewriter-medium-r-normal-sans-*-120-*-*-*-*-iso8859-1")
1810 ("lucidasanstypewriter-bold-14" "-b&h-lucidatypewriter-bold-r-normal-sans-*-140-*-*-*-*-iso8859-1")
1813 ;; ("lucidatypewriter-bold-r-24" "-b&h-lucidatypewriter-bold-r-normal-sans-24-240-75-75-m-140-iso8859-1")
1814 ;; ("fixed-medium-20" "-misc-fixed-medium-*-*-*-20-*-*-*-*-*-*-*")
1815 )))
1821 ;; For these, we specify the point height.
1846 ))))
1852 "Prompt for a font name, using `x-popup-menu', and return it."
1859 last-nonmenu-event
1867 "Set the default font for the selected frame.
1868 The argument FONTS is a list of font names; the first valid font
1869 in this list is used.
1871 When called interactively, pop up a menu and allow the user to
1872 choose a font."
1878 last-nonmenu-event
1880 ;; Append list of fontsets currently defined.
1902 "Show a menu for changing the default face in the current buffer."
1908 nil ; regenerate new fonts
1909 ;; Initialize mouse-appearance-menu-map
1918 ;; Font selector
1922 ;; If the select-font is unavailable, construct a menu.
1931 font-symbol)
1934 '("--"))
1935 (setq font-symbol (intern (cadr font)))
1936 (define-key submenu-map (vector font-symbol)
1937 (list 'menu-item (car font) font-symbol)))))
1938 (define-key font-submenu (vector (intern submenu-name))
1939 (list 'menu-item submenu-name submenu-map))))
1940 (define-key mouse-appearance-menu-map [font-submenu]
1941 (list 'menu-item "Change Text Font" font-submenu)))))
1942 (let ((choice (x-popup-menu event mouse-appearance-menu-map)))
1943 (setq choice (nth (1- (length choice)) choice))
1944 (cond ((eq choice 'text-scale-increase)
1945 (text-scale-increase 1))
1946 ((eq choice 'text-scale-decrease)
1947 (text-scale-increase -1))
1948 ((eq choice 'face-remap-reset-base)
1949 (text-scale-mode 0)
1950 (buffer-face-mode 0))
1951 (choice
1952 ;; Either choice == 'x-select-font, or choice is a
1953 ;; symbol whose name is a font.
1954 (let ((font (if (eq choice 'x-select-font)
1955 (x-select-font)
1956 (symbol-name choice))))
1957 (buffer-face-mode-invoke
1958 (if (fontp font 'font-spec)
1959 (list :font font)
1960 (font-face-attributes font))
1961 t (called-interactively-p 'interactive)))))))))
1963 \f
1964 ;;; Bindings for mouse commands.
1966 (define-key global-map [down-mouse-1] 'mouse-drag-region)
1967 (global-set-key [mouse-1] 'mouse-set-point)
1968 (global-set-key [drag-mouse-1] 'mouse-set-region)
1970 ;; These are tested for in mouse-drag-region.
1971 (global-set-key [double-mouse-1] 'mouse-set-point)
1972 (global-set-key [triple-mouse-1] 'mouse-set-point)
1974 (defun mouse--strip-first-event (_prompt)
1975 (substring (this-single-command-raw-keys) 1))
1977 (define-key function-key-map [left-fringe mouse-1] 'mouse--strip-first-event)
1978 (define-key function-key-map [right-fringe mouse-1] 'mouse--strip-first-event)
1980 (global-set-key [mouse-2] 'mouse-yank-primary)
1981 ;; Allow yanking also when the corresponding cursor is "in the fringe".
1982 (define-key function-key-map [right-fringe mouse-2] 'mouse--strip-first-event)
1983 (define-key function-key-map [left-fringe mouse-2] 'mouse--strip-first-event)
1984 (global-set-key [mouse-3] 'mouse-save-then-kill)
1985 (define-key function-key-map [right-fringe mouse-3] 'mouse--strip-first-event)
1986 (define-key function-key-map [left-fringe mouse-3] 'mouse--strip-first-event)
1988 ;; By binding these to down-going events, we let the user use the up-going
1989 ;; event to make the selection, saving a click.
1990 (global-set-key [C-down-mouse-1] 'mouse-buffer-menu)
1991 (if (not (eq system-type 'ms-dos))
1992 (global-set-key [S-down-mouse-1] 'mouse-appearance-menu))
1993 ;; C-down-mouse-2 is bound in facemenu.el.
1994 (global-set-key [C-down-mouse-3]
1995 `(menu-item ,(purecopy "Menu Bar") ignore
1996 :filter (lambda (_)
1997 (if (zerop (or (frame-parameter nil 'menu-bar-lines) 0))
1998 (mouse-menu-bar-map)
1999 (mouse-menu-major-mode-map)))))
2001 ;; Binding mouse-1 to mouse-select-window when on mode-, header-, or
2002 ;; vertical-line prevents Emacs from signaling an error when the mouse
2003 ;; button is released after dragging these lines, on non-toolkit
2004 ;; versions.
2005 (global-set-key [mode-line mouse-1] 'mouse-select-window)
2006 (global-set-key [mode-line drag-mouse-1] 'mouse-select-window)
2007 (global-set-key [mode-line down-mouse-1] 'mouse-drag-mode-line)
2008 (global-set-key [header-line down-mouse-1] 'mouse-drag-header-line)
2009 (global-set-key [header-line mouse-1] 'mouse-select-window)
2010 (global-set-key [mode-line mouse-2] 'mouse-delete-other-windows)
2011 (global-set-key [mode-line mouse-3] 'mouse-delete-window)
2012 (global-set-key [mode-line C-mouse-2] 'mouse-split-window-horizontally)
2013 (global-set-key [vertical-scroll-bar C-mouse-2] 'mouse-split-window-vertically)
2014 (global-set-key [vertical-line C-mouse-2] 'mouse-split-window-vertically)
2015 (global-set-key [vertical-line down-mouse-1] 'mouse-drag-vertical-line)
2016 (global-set-key [vertical-line mouse-1] 'mouse-select-window)
2018 (provide 'mouse)
2020 ;;; mouse.el ends here