| blob | f40a0199525dd2d1a1891659e6b92f7a957550e4 |
1 ;;; mouse.el --- window system-independent mouse support
3 ;; Copyright (C) 1993-1995, 1999-2012 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 POSITION can be a click event or ((XOFFSET YOFFSET) WINDOW) and defaults to
105 the current mouse position.
106 PREFIX is the prefix argument (if any) to pass to the command."
114 event cmd)
118 ;; The looping behavior was taken from lmenu's popup-menu-popup
120 ;; map could be a prefix key, in which case
121 ;; we need to get its function cell
122 ;; definition.
124 ;; Strangely x-popup-menu returns a list.
125 ;; mouse-major-mode-menu was using a weird:
126 ;; (key-binding (apply 'vector (append '(menu-bar) menu-prefix events)))
129 ;; We were given a list of keymaps. Search them all
130 ;; in sequence until a first binding is found.
132 binding)
138 binding)
139 ;; We were given a single keymap.
141 ;; Clear out echoing, which perhaps shows a prefix arg.
143 ;; Maybe try again but with the submap.
145 ;; If the user did not cancel by refusing to select,
146 ;; and if the result is a command, run it.
149 ;; `setup-specified-language-environment', for instance,
150 ;; expects this to be set from a menu keymap.
152 ;; mouse-major-mode-menu was using `command-execute' instead.
156 "Show menu for minor mode specified by INDICATOR.
157 Interactively, INDICATOR is read using completion.
158 If there is no menu defined for the minor mode, then create one with
159 items `Turn Off' and `Help'."
162 "Minor mode indicator: "
173 ,indicator
181 "Show minor-mode menu for EVENT on minor modes area of the mode line."
192 ;; Make a keymap in which our last command leads to a menu or
193 ;; default to the edit menu.
197 menu-bar-edit-menu)))
200 newmap))
203 "Return menu keybar MENUBAR, or a lone submenu inside it.
204 If MENUBAR defines exactly one submenu, return just that submenu.
205 Otherwise, return MENUBAR."
212 menubar
216 "Return a keymap equivalent to the menu bar.
217 The contents are the items that would be in the menu bar whether or
218 not it is actually displayed."
223 ;; If a keymap doesn't have a prompt string (a lazy
224 ;; programmer didn't bother to provide one), create it and
225 ;; insert it into the keymap; each keymap gets its own
226 ;; prompt. This is required for non-toolkit versions to
227 ;; display non-empty menu pane names.
240 minor-mode)))
243 menu))
257 ;; Supplying the list is faster than making a new map.
258 ;; FIXME: We have a problem here: we have to use the global/local/minor
259 ;; so they're displayed in the expected order, but later on in the command
260 ;; loop, they're actually looked up in the opposite order.
262 global-menu
263 local-menu
264 minor-mode-menus)))
267 "Pop up a mode-specific menu of mouse commands.
268 Default to the Edit menu if the major mode doesn't define a menu."
275 "Pop up a menu equivalent to the menu bar for keyboard EVENT with PREFIX.
276 The contents are the items that would be in the menu bar whether or
277 not it is actually displayed."
284 "Popup a menu like either `mouse-major-mode-menu' or `mouse-popup-menubar'.
285 Use the former if the menu bar is showing, otherwise the latter."
292 event prefix))
294 \f
295 ;; Commands that operate on windows.
302 ;; Give temporary modes such as isearch a chance to turn off.
306 "Delete the window you click on.
307 Do nothing if the frame has just one window.
308 This command must be bound to a mouse click."
315 "Select the window clicked on; don't move point."
327 "Delete the window clicked on, and create a new frame displaying its buffer."
338 "Delete all windows except the one you click on."
343 "Select Emacs window mouse is on, then split it vertically in half.
344 The window is split at the line clicked on.
345 This command must be bound to a mouse click."
359 "Select Emacs window mouse is on, then split it horizontally in half.
360 The window is split at the column clicked on.
361 This command must be bound to a mouse click."
374 ;; `mouse-drag-line' is now the common routine for handling all line
375 ;; dragging events combining the earlier `mouse-drag-mode-line-1' and
376 ;; `mouse-drag-vertical-line'. It should improve the behavior of line
377 ;; dragging wrt Emacs 23 as follows:
379 ;; (1) Gratuitous error messages and restrictions have been (hopefully)
380 ;; removed. (The help-echo that dragging the mode-line can resize a
381 ;; one-window-frame's window will still show through via bindings.el.)
383 ;; (2) No gratuitous selection of other windows should happen. (This
384 ;; has not been completely fixed for mouse-autoselected windows yet.)
386 ;; (3) Mouse clicks below a scroll-bar should pass through via unread
387 ;; command events.
389 ;; Note that `window-in-direction' replaces `mouse-drag-window-above'
390 ;; and `mouse-drag-vertical-line-rightward-window' with Emacs 24.1.
392 "Drag some line with the mouse.
393 START-EVENT is the starting mouse-event of the drag action. LINE
394 must be one of the symbols header, mode, or vertical."
395 ;; Give temporary modes such as isearch a chance to turn off.
407 ;; Resize the minibuffer window if it's on the same frame as
408 ;; and immediately below the position window and it's either
409 ;; active or `resize-mini-windows' is nil.
420 done event mouse growth dragged)
423 ;; Check whether header-line can be dragged at all.
428 ;; Check whether mode-line can be dragged at all.
433 ;; Get the window to adjust for the vertical case.
436 ;; If the scroll bar is on the window's right or there's
437 ;; no scroll bar at all, adjust the window where the
438 ;; start-event occurred.
439 window
440 ;; If the scroll bar is on the start-event window's left,
441 ;; adjust the window on the left of it.
444 ;; Start tracking.
446 ;; Loop reading events and sampling the position of the mouse.
450 ;; Do nothing if
451 ;; - there is a switch-frame event.
452 ;; - the mouse isn't in the frame that we started in
453 ;; - the mouse isn't in any Emacs frame
454 ;; Drag if
455 ;; - there is a mouse-movement event
456 ;; - there is a scroll-bar-movement event (??)
457 ;; (same as mouse movement for our purposes)
458 ;; Quit if
459 ;; - there is a keyboard event or some other unknown event.
464 nil)
467 ;; Do not unread a drag-mouse-1 event to avoid selecting
468 ;; some other window. For vertical line dragging do not
469 ;; unread mouse-1 events either (but only if we dragged at
470 ;; least once to allow mouse-1 clicks get through.
478 nil)
480 ;; Drag vertical divider (the calculations below are those
481 ;; from Emacs 23).
488 ;; Remember that we dragged.
492 ;; Drag horizontal divider (the calculations below are those
493 ;; from Emacs 23).
497 ;; The window's top includes the header line!
501 ;; Remember that we dragged.
508 ;; Presumably, if this was just a click, the last event should be
509 ;; `mouse-1', whereas if this did move the mouse, it should be a
510 ;; `drag-mouse-1'. `dragged' nil tells us that we never dragged
511 ;; and `on-link' tells us that there is a link to follow.
514 ;; If mouse-2 has never been done by the user, it doesn't
515 ;; have the necessary property to be interpreted correctly.
521 "Change the height of a window by dragging on the mode line."
526 "Change the height of a window by dragging on the header line."
531 "Change the width of a window by dragging on the vertical line."
534 \f
536 "Move point to the position clicked on with the mouse.
537 This should be bound to a mouse click event type."
540 ;; Use event-end in case called from mouse-drag-region.
541 ;; If EVENT is a click, event-end and event-start give same value.
549 "Return non-nil if there's an active region that was set with the mouse."
556 "Set the region to the text dragged over, and copy to kill ring.
557 This should be bound to a mouse drag event.
558 See the `mouse-drag-copy-region' variable to control whether this
559 command alters the kill ring or not."
566 ;; Don't set this-command to `kill-region', so a following
567 ;; C-w won't double the text in the kill ring. Ignore
568 ;; `last-command' so we don't append to a preceding kill.
572 ;; On a text terminal, bounce the cursor.
582 ;; Set transient-mark-mode for a little while.
587 transient-mark-mode))))
593 "The pause between scroll steps caused by mouse drags, in seconds.
594 If you drag the mouse beyond the edge of a window, Emacs scrolls the
595 window to bring the text beyond that edge into view, with a delay of
596 this many seconds between scroll steps. Scrolling stops when you move
597 the mouse back into the window, or release the button.
598 This variable's value may be non-integral.
599 Setting this to zero causes Emacs to scroll as fast as it can."
604 "The minimum number of lines scrolled by dragging mouse out of window.
605 Moving the mouse out the top or bottom edge of the window begins
606 scrolling repeatedly. The number of lines scrolled per repetition
607 is normally equal to the number of lines beyond the window edge that
608 the mouse has moved. However, it always scrolls at least the number
609 of lines specified by this variable."
614 "Scroll the window WINDOW, JUMP lines at a time, until new input arrives.
615 If OVERLAY is an overlay, let it stretch from START to the far edge of
616 the newly visible text.
617 Upon exit, point is at the far edge of the newly visible text."
633 ;; window-end doesn't reflect the window's new
634 ;; start position until the next redisplay.
640 ;; Now that we have scrolled WINDOW properly,
641 ;; put point back where it was for the redisplay
642 ;; so that we don't mess up the selected window.
654 "Set the region to the text that the mouse is dragged over.
655 Highlight the drag area as you move the mouse.
656 This must be bound to a button-down mouse event.
657 In Transient Mark mode, the highlighting remains as long as the mark
658 remains active. Otherwise, it remains until the next input event.
660 If the click is in the echo area, display the `*Messages*' buffer."
662 ;; Give temporary modes such as isearch a chance to turn off.
668 "Look for a property at click position.
669 POS may be either a buffer position or a click position like
670 those returned from `event-start'. If the click position is on
671 a string, the text property PROPERTY is examined.
672 If this is nil or the click is not on a string, then
673 the corresponding buffer position is searched for PROPERTY.
674 If PROPERTY is encountered in one of those places,
675 its value is returned."
686 "Return non-nil if POS is on a link in the current buffer.
687 POS must be a buffer position in the current buffer or a mouse
688 event location in the selected window (see `event-start').
689 However, if `mouse-1-click-in-non-selected-windows' is non-nil,
690 POS may be a mouse event location in any window.
692 A clickable link is identified by one of the following methods:
694 - If the character at POS has a non-nil `follow-link' text or
695 overlay property, the value of that property determines what to do.
697 - If there is a local key-binding or a keybinding at position POS
698 for the `follow-link' event, the binding of that event determines
699 what to do.
701 The resulting value determine whether POS is inside a link:
703 - If the value is `mouse-face', POS is inside a link if there
704 is a non-nil `mouse-face' property at POS. Return t in this case.
706 - If the value is a function, FUNC, POS is inside a link if
707 the call \(FUNC POS) returns non-nil. Return the return value
708 from that call. Arg is \(posn-point POS) if POS is a mouse event.
710 - Otherwise, return the value itself.
712 The return value is interpreted as follows:
714 - If it is a string, the mouse-1 event is translated into the
715 first character of the string, i.e. the action of the mouse-1
716 click is the local or global binding of that character.
718 - If it is a vector, the mouse-1 event is translated into the
719 first element of that vector, i.e. the action of the mouse-1
720 click is the local or global binding of that event.
722 - Otherwise, the mouse-1 event is translated into a mouse-2 event
723 at the same position."
726 mouse-1-click-in-non-selected-windows
734 ;; FIXME: This seems questionable if the click is not in a buffer.
735 ;; Should we instead decide that `action' takes a `posn'?
743 "Fix help message MSG for `mouse-1-click-follows-link'."
763 msg)
766 do-mouse-drag-region-post-process)
767 "Track mouse drags by highlighting area between point and cursor.
768 The region will be defined with mark and point.
769 DO-MOUSE-DRAG-REGION-POST-PROCESS should only be used by
770 `mouse-drag-region'."
776 ;; We've recorded what we needed from the current buffer and
777 ;; window, now let's jump to the place of the event, where things
778 ;; are happening.
791 ;; Don't count the mode line.
796 ;; Use start-point before the intangibility
797 ;; treatment, in case we click on a link inside an
798 ;; intangible text.
804 ;; Suppress automatic hscrolling, because that is a nuisance
805 ;; when setting point near the right fringe (but see below).
808 event end end-point)
811 ;; In case the down click is in the middle of some intangible text,
812 ;; use the end of that text, and put it in START-POINT.
819 ;; Activate the region, using `mouse-start-end' to determine where
820 ;; to put point and mark (e.g., double-click will select a word).
829 ;; Track the mouse until we get a non-movement event.
836 ;; Automatic hscrolling did not occur during the call to
837 ;; `read-event'; but if the user subsequently drags the
838 ;; mouse, go ahead and hscroll.
846 end-point click-count)
852 nil start-point))
855 nil start-point))))))))
857 ;; Handle the terminating event if possible.
859 ;; Ensure that point is on the end of the last event.
865 end-point click-count))
867 ;; Find its binding.
872 mouse-set-region))))))
876 ;; If point has moved, finish the drag.
879 do-mouse-drag-region-post-process
883 ;; If point hasn't moved, run the binding of the
884 ;; terminating up-event.
890 ;; Don't run the up-event handler if the window
891 ;; start changed in a redisplay after the
892 ;; mouse-set-point for the down-mouse event at
893 ;; the beginning of this function. When the
894 ;; window start has changed, the up-mouse event
895 ;; contains a different position due to the new
896 ;; window contents, and point is set again.
899 start-window-start)))
903 ;; If we rebind to mouse-2, reselect previous selected
904 ;; window, so that the mouse-2 event runs in the same
905 ;; situation as if user had clicked it directly. Fixes
906 ;; the bug reported by juri@jurta.org on 2005-12-27.
911 ;; If this mouse click has never been done by the
912 ;; user, it doesn't have the necessary property to be
913 ;; interpreted correctly.
947 \f
948 ;; Commands to handle xterm-style multiple clicks.
950 "Skip over word, over whitespace, or over identical punctuation.
951 If DIR is positive skip forward; if negative, skip backward."
955 ;; Here, we can't use skip-syntax-forward/backward because
956 ;; they don't pay attention to word-separating-categories,
957 ;; and thus they will skip over a true word boundary. So,
958 ;; we simulate the original behavior by using forward-word.
980 "Return a list of region bounds based on START and END according to MODE.
981 If MODE is 0 then set point to (min START END), mark to (max START END).
982 If MODE is 1 then set point to start of word at (min START END),
983 mark to end of word at (max START END).
984 If MODE is 2 then do the same for lines."
988 end temp)))
1052 \f
1053 ;; Subroutine: set the mark where CLICK happened,
1054 ;; but don't do anything else.
1071 ;; Use reverse, not nreverse, since event-modifiers
1072 ;; does not copy the list it returns.
1075 event)))
1079 t
1081 nil)))
1083 ;; Momentarily show where the mark is, if highlighting doesn't show it.
1086 "Set mark at the position clicked on with the mouse.
1087 Display cursor at that position for a second.
1088 This must be bound to a mouse click."
1092 ;; We don't use save-excursion because that preserves the mark too.
1102 "Kill the region between point and the mouse click.
1114 "Insert the last stretch of killed text at the position clicked on.
1115 Also move point to one end of the text thus inserted (normally the end),
1116 and set mark at the beginning.
1118 If `mouse-yank-at-point' is non-nil, insert at point
1119 regardless of where you click."
1121 ;; Give temporary modes such as isearch a chance to turn off.
1124 ;; Without this, confusing things happen upon e.g. inserting into
1125 ;; the middle of an active region.
1133 "Insert the primary selection at the position clicked on.
1134 Move point to the end of the inserted text, and set mark at
1135 beginning. If `mouse-yank-at-point' is non-nil, insert at point
1136 regardless of where you click."
1138 ;; Give temporary modes such as isearch a chance to turn off.
1140 ;; Without this, confusing things happen upon e.g. inserting into
1141 ;; the middle of an active region.
1149 ;; MS-Windows emulates PRIMARY in x-get-selection, but not
1150 ;; in x-get-selection-value (the latter only accesses the
1151 ;; clipboard). So try PRIMARY first, in case they selected
1152 ;; something with the mouse in the current Emacs session.
1156 ;; On X, x-get-selection-value supports more formats and
1157 ;; encodings, so use it in preference to x-get-selection.
1160 ;; FIXME: What about xterm-mouse-mode etc.?
1169 "Copy the region between point and the mouse click in the kill ring.
1176 ;; This function used to delete the text between point and the mouse
1177 ;; whenever it was equal to the front of the kill ring, but some
1178 ;; people found that confusing.
1180 ;; The position of the last invocation of `mouse-save-then-kill'.
1184 ;; We must make our own undo boundaries
1185 ;; because they happen automatically only for the current buffer.
1188 ;; If we have no undo list in this buffer,
1189 ;; just delete.
1191 ;; Delete, but make the undo-list entry share with the kill ring.
1192 ;; First, delete just one char, so in case buffer is being modified
1193 ;; for the first time, the undo list records that fact.
1198 ;; Undo that deletion--but don't change the undo list!
1201 ;; Now delete the rest of the specified region,
1202 ;; but don't record it.
1208 ;; Search back in buffer-undo-list for the string
1209 ;; that came from deleting one character.
1212 ;; Replace it with an entry for the entire deleted text.
1218 "Set the region according to CLICK; the second time, kill it.
1219 CLICK should be a mouse click event.
1221 If the region is inactive, activate it temporarily. Set mark at
1222 the original point, and move point to the position of CLICK.
1224 If the region is already active, adjust it. Normally, do this by
1225 moving point or mark, whichever is closer, to CLICK. But if you
1226 have selected whole words or lines, move point or mark to the
1227 word or line boundary closest to CLICK instead.
1229 If `mouse-drag-copy-region' is non-nil, this command also saves the
1230 new region to the kill ring (replacing the previous kill if the
1231 previous region was just saved to the kill ring).
1233 If this command is called a second consecutive time with the same
1234 CLICK position, kill the region (or delete it
1235 if `mouse-drag-copy-region' is non-nil)"
1242 ;; Don't let a subsequent kill command append to this one.
1244 ;; Check if the user has multi-clicked to select words/lines.
1248 mouse-selection-click-count
1252 ;; If the user clicked without moving point, kill the region.
1253 ;; This also resets `mouse-selection-click-count'.
1258 ;; Region already saved in the previous click;
1259 ;; don't make a duplicate entry, just delete.
1265 ;; Otherwise, if there is a suitable region, adjust it by moving
1266 ;; one end (whichever is closer) to CLICK-PT.
1271 mouse-save-then-kill-posn)
1273 mouse-set-region))
1285 ;; Region already copied to kill-ring once, so replace.
1287 ;; Arrange for a repeated mouse-3 to kill the region.
1290 ;; Otherwise, set the mark where point is and move to CLICK-PT.
1302 \f
1313 ol)
1314 "An overlay which records the current secondary selection.
1319 ;; A marker which records the specified first end for a secondary selection.
1320 ;; May be nil.
1324 "Set one end of the secondary selection to the position clicked on.
1326 and complete the secondary selection."
1331 ;; Cancel any preexisting secondary selection.
1340 "Set the secondary selection to the text that the mouse is dragged over.
1341 This must be bound to a mouse drag event."
1345 beg
1352 'SECONDARY
1357 "Set the secondary selection to the text that the mouse is dragged over.
1358 Highlight the drag area as you move the mouse.
1359 This must be bound to a button-down mouse event.
1360 The function returns a non-nil value if it creates a secondary selection."
1371 ;; Don't count the mode line.
1377 ;; Double or triple press: make an initial selection
1378 ;; of one word or line.
1383 ;; Single-press: cancel any preexisting secondary selection.
1396 nil
1400 ;; Are we moving within the original window?
1404 click-count)))
1417 mouse-secondary-overlay start-point))
1420 mouse-secondary-overlay start-point)))))))))
1431 nil))
1433 'SECONDARY
1438 "Insert the secondary selection at the position clicked on.
1439 Move point to the end of the inserted text.
1440 If `mouse-yank-at-point' is non-nil, insert at point
1441 regardless of where you click."
1443 ;; Give temporary modes such as isearch a chance to turn off.
1452 "Kill the text in the secondary selection.
1453 This is intended more as a keyboard command than as a mouse command
1454 but it can work as either one.
1456 The current buffer (in case of keyboard use), or the buffer clicked on,
1457 must be the one that the secondary selection is in. This requirement
1458 is to prevent accidents."
1474 "Set the secondary selection and save it to the kill ring.
1475 The second time, kill it. CLICK should be a mouse click event.
1477 If you have not called `mouse-start-secondary' in the clicked
1478 buffer, activate the secondary selection and set it between point
1479 and the click position CLICK.
1481 Otherwise, adjust the bounds of the secondary selection.
1482 Normally, do this by moving its beginning or end, whichever is
1483 closer, to CLICK. But if you have selected whole words or lines,
1484 adjust to the word or line boundary closest to CLICK instead.
1486 If this command is called a second consecutive time with the same
1487 CLICK position, kill the secondary selection."
1494 ;; Don't let a subsequent kill command append to this one.
1496 ;; Check if the user has multi-clicked to select words/lines.
1499 mouse-secondary-click-count
1507 ;; If the secondary selection is not active in BUF, activate it.
1517 ;; If the user clicked without moving point, delete the secondary
1518 ;; selection. This also resets `mouse-secondary-click-count'.
1527 ;; Otherwise, if there is a suitable secondary selection overlay,
1528 ;; adjust it by moving one end (whichever is closer) to CLICK-PT.
1537 ;; If the front of the kill ring comes from an immediately
1538 ;; previous use of this command, replace the entry.
1542 t)
1548 ;; Otherwise, set the secondary selection overlay.
1552 ;; All we have is one end of a selection, so put the other
1553 ;; end here.
1559 ;; Finally, set the window system's secondary selection.
1567 \f
1569 "Number of buffers in one pane (submenu) of the buffer menu.
1570 If we have lots of buffers, divide them into groups of
1571 `mouse-buffer-menu-maxlen' and make a pane (or submenu) for each one."
1578 will split the buffer menu by the major modes (see
1579 `mouse-buffer-menu-mode-groups') or just by menu length.
1580 Set to 1 (or even 0!) if you want to group by major mode always, and to
1581 a large number if you prefer a mixed multitude. The default is 4."
1597 ("Threads\\|Memory\\|Disassembly\\|Breakpoints\\|Frames\\|Locals\\|Registers\\|Inferior I/O\\|Debugger"
1601 Each element has the form (REGEXP . GROUPNAME).
1605 "Pop up a menu of buffers for selection with the mouse.
1606 This switches buffers in the window that you clicked on,
1607 and selects that window."
1611 ;; Make an alist of elements that look like (MENU-ITEM . BUFFER).
1613 ;; Divide all buffers into buckets for various major modes.
1614 ;; Each bucket looks like (MODE NAMESTRING BUFFERS...).
1624 adjusted-major-mode
1629 ;; Compute the sum of squares of sizes of the major-mode buckets.
1634 (+ sum-of-squares
1639 ;; Subdividing by major modes really helps, so let's do it.
1641 ;; Sort the list to put the most popular major modes first.
1646 ;; Make a separate submenu for each major mode
1647 ;; that has more than one buffer,
1648 ;; unless all the remaining buffers are less than 1/10 of them.
1658 this-mode-list)
1659 subdivided-menus))))
1663 ;; If any major modes are left over,
1664 ;; make a single submenu for them.
1668 ;; we don't need split-by-major-mode any more,
1669 ;; so we can ditch it with nconc.
1674 subdivided-menus)))))
1685 window))
1691 head)
1720 list-buffers-directory)))
1722 elt)
1723 head))))
1725 ;; Compensate for the reversal that the above loop does.
1729 ;; If we have lots of buffers, divide them into groups of 20
1730 ;; and make a pane (or submenu) for each one.
1735 ;; Pull off the next mouse-buffer-menu-maxlen buffers
1736 ;; and make them the next element of sublist.
1740 nil))
1742 sublists))
1746 ;; Few buffers--put them all in one pane.
1748 \f
1752 ;; Font selection.
1771 ;; For these, we specify the pixel height and width.
1800 ;; We don't seem to have these; who knows what they are.
1801 ;; ("fg-18" "fg-18")
1802 ;; ("fg-25" "fg-25")
1803 ("lucidasanstypewriter-12" "-b&h-lucidatypewriter-medium-r-normal-sans-*-120-*-*-*-*-iso8859-1")
1804 ("lucidasanstypewriter-bold-14" "-b&h-lucidatypewriter-bold-r-normal-sans-*-140-*-*-*-*-iso8859-1")
1807 ;; ("lucidatypewriter-bold-r-24" "-b&h-lucidatypewriter-bold-r-normal-sans-24-240-75-75-m-140-iso8859-1")
1808 ;; ("fixed-medium-20" "-misc-fixed-medium-*-*-*-20-*-*-*-*-*-*-*")
1809 )))
1815 ;; For these, we specify the point height.
1840 ))))
1846 "Prompt for a font name, using `x-popup-menu', and return it."
1853 last-nonmenu-event
1861 "Set the default font for the selected frame.
1862 The argument FONTS is a list of font names; the first valid font
1863 in this list is used.
1865 When called interactively, pop up a menu and allow the user to
1866 choose a font."
1872 last-nonmenu-event
1874 ;; Append list of fontsets currently defined.
1896 "Show a menu for changing the default face in the current buffer."
1902 nil ; regenerate new fonts
1903 ;; Initialize mouse-appearance-menu-map
1912 ;; Font selector
1916 ;; If the select-font is unavailable, construct a menu.
1925 font-symbol)
1928 '("--"))
1929 (setq font-symbol (intern (cadr font)))
1930 (define-key submenu-map (vector font-symbol)
1931 (list 'menu-item (car font) font-symbol)))))
1932 (define-key font-submenu (vector (intern submenu-name))
1933 (list 'menu-item submenu-name submenu-map))))
1934 (define-key mouse-appearance-menu-map [font-submenu]
1935 (list 'menu-item "Change Text Font" font-submenu)))))
1936 (let ((choice (x-popup-menu event mouse-appearance-menu-map)))
1937 (setq choice (nth (1- (length choice)) choice))
1938 (cond ((eq choice 'text-scale-increase)
1939 (text-scale-increase 1))
1940 ((eq choice 'text-scale-decrease)
1941 (text-scale-increase -1))
1942 ((eq choice 'face-remap-reset-base)
1943 (text-scale-mode 0)
1944 (buffer-face-mode 0))
1945 (choice
1946 ;; Either choice == 'x-select-font, or choice is a
1947 ;; symbol whose name is a font.
1948 (buffer-face-mode-invoke (font-face-attributes
1949 (if (eq choice 'x-select-font)
1950 (x-select-font)
1951 (symbol-name choice)))
1952 t
1953 (called-interactively-p 'interactive))))))))
1955 \f
1956 ;;; Bindings for mouse commands.
1958 (define-key global-map [down-mouse-1] 'mouse-drag-region)
1959 (global-set-key [mouse-1] 'mouse-set-point)
1960 (global-set-key [drag-mouse-1] 'mouse-set-region)
1962 ;; These are tested for in mouse-drag-region.
1963 (global-set-key [double-mouse-1] 'mouse-set-point)
1964 (global-set-key [triple-mouse-1] 'mouse-set-point)
1966 (defun mouse--strip-first-event (_prompt)
1967 (substring (this-single-command-raw-keys) 1))
1969 (define-key function-key-map [left-fringe mouse-1] 'mouse--strip-first-event)
1970 (define-key function-key-map [right-fringe mouse-1] 'mouse--strip-first-event)
1972 (global-set-key [mouse-2] 'mouse-yank-primary)
1973 ;; Allow yanking also when the corresponding cursor is "in the fringe".
1974 (define-key function-key-map [right-fringe mouse-2] 'mouse--strip-first-event)
1975 (define-key function-key-map [left-fringe mouse-2] 'mouse--strip-first-event)
1976 (global-set-key [mouse-3] 'mouse-save-then-kill)
1977 (define-key function-key-map [right-fringe mouse-3] 'mouse--strip-first-event)
1978 (define-key function-key-map [left-fringe mouse-3] 'mouse--strip-first-event)
1980 ;; By binding these to down-going events, we let the user use the up-going
1981 ;; event to make the selection, saving a click.
1982 (global-set-key [C-down-mouse-1] 'mouse-buffer-menu)
1983 (if (not (eq system-type 'ms-dos))
1984 (global-set-key [S-down-mouse-1] 'mouse-appearance-menu))
1985 ;; C-down-mouse-2 is bound in facemenu.el.
1986 (global-set-key [C-down-mouse-3]
1987 `(menu-item ,(purecopy "Menu Bar") ignore
1988 :filter (lambda (_)
1989 (if (zerop (or (frame-parameter nil 'menu-bar-lines) 0))
1990 (mouse-menu-bar-map)
1991 (mouse-menu-major-mode-map)))))
1993 ;; Binding mouse-1 to mouse-select-window when on mode-, header-, or
1994 ;; vertical-line prevents Emacs from signaling an error when the mouse
1995 ;; button is released after dragging these lines, on non-toolkit
1996 ;; versions.
1997 (global-set-key [mode-line mouse-1] 'mouse-select-window)
1998 (global-set-key [mode-line drag-mouse-1] 'mouse-select-window)
1999 (global-set-key [mode-line down-mouse-1] 'mouse-drag-mode-line)
2000 (global-set-key [header-line down-mouse-1] 'mouse-drag-header-line)
2001 (global-set-key [header-line mouse-1] 'mouse-select-window)
2002 (global-set-key [mode-line mouse-2] 'mouse-delete-other-windows)
2003 (global-set-key [mode-line mouse-3] 'mouse-delete-window)
2004 (global-set-key [mode-line C-mouse-2] 'mouse-split-window-horizontally)
2005 (global-set-key [vertical-scroll-bar C-mouse-2] 'mouse-split-window-vertically)
2006 (global-set-key [vertical-line C-mouse-2] 'mouse-split-window-vertically)
2007 (global-set-key [vertical-line down-mouse-1] 'mouse-drag-vertical-line)
2008 (global-set-key [vertical-line mouse-1] 'mouse-select-window)
2010 (provide 'mouse)
2012 ;;; mouse.el ends here