| blob | a1aa104495aa829e542e93d9d179e1c9dbe9ad75 |
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 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,
460 ;; until there is a non-mouse-movement event. Also,
461 ;; scroll-bar-movement events are the same as mouse movement for
462 ;; our purposes. (Why? -- cyd)
463 ;; If you change this, check that all of the following still work:
464 ;; Resizing windows by dragging mode-lines and header lines,
465 ;; and vertical lines (in windows without scroll bars).
466 ;; Doing this should not select another window, even if
467 ;; mouse-autoselect-window is non-nil.
468 ;; Mouse-1 clicks in Info header lines should advance position
469 ;; by one node at a time if mouse-1-click-follows-link is non-nil,
470 ;; otherwise they should just select the window.
475 switch-frame select-window)))
477 ;; Do nothing if
478 ;; - there is a switch-frame event.
479 ;; - the mouse isn't in the frame that we started in
480 ;; - the mouse isn't in any Emacs frame
483 nil)
486 nil)
488 ;; Drag vertical divider.
497 ;; Drag horizontal divider.
501 ;; The window's top includes the header line!
506 growth
508 ;; Process the terminating event.
512 ;; If mouse-2 has never been done by the user, it doesn't have
513 ;; the necessary property to be interpreted correctly.
519 "Change the height of a window by dragging on the mode line."
524 "Change the height of a window by dragging on the header line."
529 "Change the width of a window by dragging on the vertical line."
532 \f
534 "Move point to the position clicked on with the mouse.
535 This should be bound to a mouse click event type."
538 ;; Use event-end in case called from mouse-drag-region.
539 ;; If EVENT is a click, event-end and event-start give same value.
547 "Return non-nil if there's an active region that was set with the mouse."
554 "Set the region to the text dragged over, and copy to kill ring.
555 This should be bound to a mouse drag event.
556 See the `mouse-drag-copy-region' variable to control whether this
557 command alters the kill ring or not."
564 ;; Don't set this-command to `kill-region', so a following
565 ;; C-w won't double the text in the kill ring. Ignore
566 ;; `last-command' so we don't append to a preceding kill.
570 ;; On a text terminal, bounce the cursor.
580 ;; Set transient-mark-mode for a little while.
585 transient-mark-mode))))
591 "The pause between scroll steps caused by mouse drags, in seconds.
592 If you drag the mouse beyond the edge of a window, Emacs scrolls the
593 window to bring the text beyond that edge into view, with a delay of
594 this many seconds between scroll steps. Scrolling stops when you move
595 the mouse back into the window, or release the button.
596 This variable's value may be non-integral.
597 Setting this to zero causes Emacs to scroll as fast as it can."
602 "The minimum number of lines scrolled by dragging mouse out of window.
603 Moving the mouse out the top or bottom edge of the window begins
604 scrolling repeatedly. The number of lines scrolled per repetition
605 is normally equal to the number of lines beyond the window edge that
606 the mouse has moved. However, it always scrolls at least the number
607 of lines specified by this variable."
612 "Scroll the window WINDOW, JUMP lines at a time, until new input arrives.
613 If OVERLAY is an overlay, let it stretch from START to the far edge of
614 the newly visible text.
615 Upon exit, point is at the far edge of the newly visible text."
631 ;; window-end doesn't reflect the window's new
632 ;; start position until the next redisplay.
638 ;; Now that we have scrolled WINDOW properly,
639 ;; put point back where it was for the redisplay
640 ;; so that we don't mess up the selected window.
652 "Set the region to the text that the mouse is dragged over.
653 Highlight the drag area as you move the mouse.
654 This must be bound to a button-down mouse event.
655 In Transient Mark mode, the highlighting remains as long as the mark
656 remains active. Otherwise, it remains until the next input event.
658 If the click is in the echo area, display the `*Messages*' buffer."
660 ;; Give temporary modes such as isearch a chance to turn off.
666 "Look for a property at click position.
667 POS may be either a buffer position or a click position like
668 those returned from `event-start'. If the click position is on
669 a string, the text property PROPERTY is examined.
670 If this is nil or the click is not on a string, then
671 the corresponding buffer position is searched for PROPERTY.
672 If PROPERTY is encountered in one of those places,
673 its value is returned."
684 "Return non-nil if POS is on a link in the current buffer.
685 POS must be a buffer position in the current buffer or a mouse
686 event location in the selected window (see `event-start').
687 However, if `mouse-1-click-in-non-selected-windows' is non-nil,
688 POS may be a mouse event location in any window.
690 A clickable link is identified by one of the following methods:
692 - If the character at POS has a non-nil `follow-link' text or
693 overlay property, the value of that property determines what to do.
695 - If there is a local key-binding or a keybinding at position POS
696 for the `follow-link' event, the binding of that event determines
697 what to do.
699 The resulting value determine whether POS is inside a link:
701 - If the value is `mouse-face', POS is inside a link if there
702 is a non-nil `mouse-face' property at POS. Return t in this case.
704 - If the value is a function, FUNC, POS is inside a link if
705 the call \(FUNC POS) returns non-nil. Return the return value
706 from that call. Arg is \(posn-point POS) if POS is a mouse event.
708 - Otherwise, return the value itself.
710 The return value is interpreted as follows:
712 - If it is a string, the mouse-1 event is translated into the
713 first character of the string, i.e. the action of the mouse-1
714 click is the local or global binding of that character.
716 - If it is a vector, the mouse-1 event is translated into the
717 first element of that vector, i.e. the action of the mouse-1
718 click is the local or global binding of that event.
720 - Otherwise, the mouse-1 event is translated into a mouse-2 event
721 at the same position."
724 mouse-1-click-in-non-selected-windows
732 ;; FIXME: This seems questionable if the click is not in a buffer.
733 ;; Should we instead decide that `action' takes a `posn'?
741 "Fix help message MSG for `mouse-1-click-follows-link'."
761 msg)
764 do-mouse-drag-region-post-process)
765 "Track mouse drags by highlighting area between point and cursor.
766 The region will be defined with mark and point.
767 DO-MOUSE-DRAG-REGION-POST-PROCESS should only be used by
768 `mouse-drag-region'."
774 ;; We've recorded what we needed from the current buffer and
775 ;; window, now let's jump to the place of the event, where things
776 ;; are happening.
789 ;; Don't count the mode line.
792 ;; Use start-point before the intangibility
793 ;; treatment, in case we click on a link inside
794 ;; intangible text.
800 ;; Suppress automatic hscrolling, because that is a nuisance
801 ;; when setting point near the right fringe (but see below).
804 moved-off-start event end end-point)
807 ;; In case the down click is in the middle of some intangible text,
808 ;; use the end of that text, and put it in START-POINT.
815 ;; Activate the region, using `mouse-start-end' to determine where
816 ;; to put point and mark (e.g., double-click will select a word).
825 ;; Track the mouse until we get a non-movement event.
832 ;; Automatic hscrolling did not occur during the call to
833 ;; `read-event'; but if the user subsequently drags the
834 ;; mouse, go ahead and hscroll.
839 ;; Note whether the mouse has left the starting position.
845 end-point click-count)
851 nil start-point))
854 nil start-point))))))))
856 ;; Handle the terminating event if possible.
858 ;; Ensure that point is on the end of the last event.
864 end-point click-count))
866 ;; Find its binding.
871 mouse-set-region))))))
875 ;; If point has moved, finish the drag.
878 do-mouse-drag-region-post-process
882 ;; Otherwise, run binding of terminating up-event.
891 ;; Don't run the up-event handler if the window
892 ;; start changed in a redisplay after the
893 ;; mouse-set-point for the down-mouse event at
894 ;; the beginning of this function. When the
895 ;; window start has changed, the up-mouse event
896 ;; contains a different position due to the new
897 ;; window contents, and point is set again.
900 start-window-start)))
904 ;; If we rebind to mouse-2, reselect previous selected
905 ;; window, so that the mouse-2 event runs in the same
906 ;; situation as if user had clicked it directly. Fixes
907 ;; the bug reported by juri@jurta.org on 2005-12-27.
912 ;; If this mouse click has never been done by the
913 ;; user, it doesn't have the necessary property to be
914 ;; interpreted correctly.
948 \f
949 ;; Commands to handle xterm-style multiple clicks.
951 "Skip over word, over whitespace, or over identical punctuation.
952 If DIR is positive skip forward; if negative, skip backward."
956 ;; Here, we can't use skip-syntax-forward/backward because
957 ;; they don't pay attention to word-separating-categories,
958 ;; and thus they will skip over a true word boundary. So,
959 ;; we simulate the original behavior by using forward-word.
981 "Return a list of region bounds based on START and END according to MODE.
982 If MODE is 0 then set point to (min START END), mark to (max START END).
983 If MODE is 1 then set point to start of word at (min START END),
984 mark to end of word at (max START END).
985 If MODE is 2 then do the same for lines."
989 end temp)))
1053 \f
1054 ;; Subroutine: set the mark where CLICK happened,
1055 ;; but don't do anything else.
1072 ;; Use reverse, not nreverse, since event-modifiers
1073 ;; does not copy the list it returns.
1076 event)))
1080 t
1082 nil)))
1084 ;; Momentarily show where the mark is, if highlighting doesn't show it.
1087 "Set mark at the position clicked on with the mouse.
1088 Display cursor at that position for a second.
1089 This must be bound to a mouse click."
1093 ;; We don't use save-excursion because that preserves the mark too.
1103 "Kill the region between point and the mouse click.
1115 "Insert the last stretch of killed text at the position clicked on.
1116 Also move point to one end of the text thus inserted (normally the end),
1117 and set mark at the beginning.
1119 If `mouse-yank-at-point' is non-nil, insert at point
1120 regardless of where you click."
1122 ;; Give temporary modes such as isearch a chance to turn off.
1125 ;; Without this, confusing things happen upon e.g. inserting into
1126 ;; the middle of an active region.
1134 "Insert the primary selection at the position clicked on.
1135 Move point to the end of the inserted text, and set mark at
1136 beginning. If `mouse-yank-at-point' is non-nil, insert at point
1137 regardless of where you click."
1139 ;; Give temporary modes such as isearch a chance to turn off.
1141 ;; Without this, confusing things happen upon e.g. inserting into
1142 ;; the middle of an active region.
1150 ;; MS-Windows emulates PRIMARY in x-get-selection, but not
1151 ;; in x-get-selection-value (the latter only accesses the
1152 ;; clipboard). So try PRIMARY first, in case they selected
1153 ;; something with the mouse in the current Emacs session.
1157 ;; On X, x-get-selection-value supports more formats and
1158 ;; encodings, so use it in preference to x-get-selection.
1161 ;; FIXME: What about xterm-mouse-mode etc.?
1170 "Copy the region between point and the mouse click in the kill ring.
1177 ;; This function used to delete the text between point and the mouse
1178 ;; whenever it was equal to the front of the kill ring, but some
1179 ;; people found that confusing.
1181 ;; The position of the last invocation of `mouse-save-then-kill'.
1185 ;; We must make our own undo boundaries
1186 ;; because they happen automatically only for the current buffer.
1189 ;; If we have no undo list in this buffer,
1190 ;; just delete.
1192 ;; Delete, but make the undo-list entry share with the kill ring.
1193 ;; First, delete just one char, so in case buffer is being modified
1194 ;; for the first time, the undo list records that fact.
1199 ;; Undo that deletion--but don't change the undo list!
1202 ;; Now delete the rest of the specified region,
1203 ;; but don't record it.
1209 ;; Search back in buffer-undo-list for the string
1210 ;; that came from deleting one character.
1213 ;; Replace it with an entry for the entire deleted text.
1219 "Set the region according to CLICK; the second time, kill it.
1220 CLICK should be a mouse click event.
1222 If the region is inactive, activate it temporarily. Set mark at
1223 the original point, and move point to the position of CLICK.
1225 If the region is already active, adjust it. Normally, do this by
1226 moving point or mark, whichever is closer, to CLICK. But if you
1227 have selected whole words or lines, move point or mark to the
1228 word or line boundary closest to CLICK instead.
1230 If `mouse-drag-copy-region' is non-nil, this command also saves the
1231 new region to the kill ring (replacing the previous kill if the
1232 previous region was just saved to the kill ring).
1234 If this command is called a second consecutive time with the same
1235 CLICK position, kill the region (or delete it
1236 if `mouse-drag-copy-region' is non-nil)"
1243 ;; Don't let a subsequent kill command append to this one.
1245 ;; Check if the user has multi-clicked to select words/lines.
1249 mouse-selection-click-count
1253 ;; If the user clicked without moving point, kill the region.
1254 ;; This also resets `mouse-selection-click-count'.
1259 ;; Region already saved in the previous click;
1260 ;; don't make a duplicate entry, just delete.
1266 ;; Otherwise, if there is a suitable region, adjust it by moving
1267 ;; one end (whichever is closer) to CLICK-PT.
1272 mouse-save-then-kill-posn)
1274 mouse-set-region))
1286 ;; Region already copied to kill-ring once, so replace.
1288 ;; Arrange for a repeated mouse-3 to kill the region.
1291 ;; Otherwise, set the mark where point is and move to CLICK-PT.
1303 \f
1314 ol)
1315 "An overlay which records the current secondary selection.
1320 ;; A marker which records the specified first end for a secondary selection.
1321 ;; May be nil.
1325 "Set one end of the secondary selection to the position clicked on.
1327 and complete the secondary selection."
1332 ;; Cancel any preexisting secondary selection.
1341 "Set the secondary selection to the text that the mouse is dragged over.
1342 This must be bound to a mouse drag event."
1346 beg
1353 'SECONDARY
1358 "Set the secondary selection to the text that the mouse is dragged over.
1359 Highlight the drag area as you move the mouse.
1360 This must be bound to a button-down mouse event.
1361 The function returns a non-nil value if it creates a secondary selection."
1372 ;; Don't count the mode line.
1378 ;; Double or triple press: make an initial selection
1379 ;; of one word or line.
1384 ;; Single-press: cancel any preexisting secondary selection.
1397 nil
1401 ;; Are we moving within the original window?
1405 click-count)))
1418 mouse-secondary-overlay start-point))
1421 mouse-secondary-overlay start-point)))))))))
1432 nil))
1434 'SECONDARY
1439 "Insert the secondary selection at the position clicked on.
1440 Move point to the end of the inserted text.
1441 If `mouse-yank-at-point' is non-nil, insert at point
1442 regardless of where you click."
1444 ;; Give temporary modes such as isearch a chance to turn off.
1453 "Kill the text in the secondary selection.
1454 This is intended more as a keyboard command than as a mouse command
1455 but it can work as either one.
1457 The current buffer (in case of keyboard use), or the buffer clicked on,
1458 must be the one that the secondary selection is in. This requirement
1459 is to prevent accidents."
1475 "Set the secondary selection and save it to the kill ring.
1476 The second time, kill it. CLICK should be a mouse click event.
1478 If you have not called `mouse-start-secondary' in the clicked
1479 buffer, activate the secondary selection and set it between point
1480 and the click position CLICK.
1482 Otherwise, adjust the bounds of the secondary selection.
1483 Normally, do this by moving its beginning or end, whichever is
1484 closer, to CLICK. But if you have selected whole words or lines,
1485 adjust to the word or line boundary closest to CLICK instead.
1487 If this command is called a second consecutive time with the same
1488 CLICK position, kill the secondary selection."
1495 ;; Don't let a subsequent kill command append to this one.
1497 ;; Check if the user has multi-clicked to select words/lines.
1500 mouse-secondary-click-count
1508 ;; If the secondary selection is not active in BUF, activate it.
1518 ;; If the user clicked without moving point, delete the secondary
1519 ;; selection. This also resets `mouse-secondary-click-count'.
1528 ;; Otherwise, if there is a suitable secondary selection overlay,
1529 ;; adjust it by moving one end (whichever is closer) to CLICK-PT.
1538 ;; If the front of the kill ring comes from an immediately
1539 ;; previous use of this command, replace the entry.
1543 t)
1549 ;; Otherwise, set the secondary selection overlay.
1553 ;; All we have is one end of a selection, so put the other
1554 ;; end here.
1560 ;; Finally, set the window system's secondary selection.
1568 \f
1570 "Number of buffers in one pane (submenu) of the buffer menu.
1571 If we have lots of buffers, divide them into groups of
1572 `mouse-buffer-menu-maxlen' and make a pane (or submenu) for each one."
1579 will split the buffer menu by the major modes (see
1580 `mouse-buffer-menu-mode-groups') or just by menu length.
1581 Set to 1 (or even 0!) if you want to group by major mode always, and to
1582 a large number if you prefer a mixed multitude. The default is 4."
1598 ("Threads\\|Memory\\|Disassembly\\|Breakpoints\\|Frames\\|Locals\\|Registers\\|Inferior I/O\\|Debugger"
1602 Each element has the form (REGEXP . GROUPNAME).
1606 "Pop up a menu of buffers for selection with the mouse.
1607 This switches buffers in the window that you clicked on,
1608 and selects that window."
1612 ;; Make an alist of elements that look like (MENU-ITEM . BUFFER).
1614 ;; Divide all buffers into buckets for various major modes.
1615 ;; Each bucket looks like (MODE NAMESTRING BUFFERS...).
1625 adjusted-major-mode
1630 ;; Compute the sum of squares of sizes of the major-mode buckets.
1635 (+ sum-of-squares
1640 ;; Subdividing by major modes really helps, so let's do it.
1642 ;; Sort the list to put the most popular major modes first.
1647 ;; Make a separate submenu for each major mode
1648 ;; that has more than one buffer,
1649 ;; unless all the remaining buffers are less than 1/10 of them.
1659 this-mode-list)
1660 subdivided-menus))))
1664 ;; If any major modes are left over,
1665 ;; make a single submenu for them.
1669 ;; we don't need split-by-major-mode any more,
1670 ;; so we can ditch it with nconc.
1675 subdivided-menus)))))
1686 window))
1692 head)
1721 list-buffers-directory)))
1723 elt)
1724 head))))
1726 ;; Compensate for the reversal that the above loop does.
1730 ;; If we have lots of buffers, divide them into groups of 20
1731 ;; and make a pane (or submenu) for each one.
1736 ;; Pull off the next mouse-buffer-menu-maxlen buffers
1737 ;; and make them the next element of sublist.
1741 nil))
1743 sublists))
1747 ;; Few buffers--put them all in one pane.
1749 \f
1753 ;; Font selection.
1772 ;; For these, we specify the pixel height and width.
1801 ;; We don't seem to have these; who knows what they are.
1802 ;; ("fg-18" "fg-18")
1803 ;; ("fg-25" "fg-25")
1804 ("lucidasanstypewriter-12" "-b&h-lucidatypewriter-medium-r-normal-sans-*-120-*-*-*-*-iso8859-1")
1805 ("lucidasanstypewriter-bold-14" "-b&h-lucidatypewriter-bold-r-normal-sans-*-140-*-*-*-*-iso8859-1")
1808 ;; ("lucidatypewriter-bold-r-24" "-b&h-lucidatypewriter-bold-r-normal-sans-24-240-75-75-m-140-iso8859-1")
1809 ;; ("fixed-medium-20" "-misc-fixed-medium-*-*-*-20-*-*-*-*-*-*-*")
1810 )))
1816 ;; For these, we specify the point height.
1841 ))))
1847 "Prompt for a font name, using `x-popup-menu', and return it."
1854 last-nonmenu-event
1862 "Set the default font for the selected frame.
1863 The argument FONTS is a list of font names; the first valid font
1864 in this list is used.
1866 When called interactively, pop up a menu and allow the user to
1867 choose a font."
1873 last-nonmenu-event
1875 ;; Append list of fontsets currently defined.
1897 "Show a menu for changing the default face in the current buffer."
1903 nil ; regenerate new fonts
1904 ;; Initialize mouse-appearance-menu-map
1913 ;; Font selector
1917 ;; If the select-font is unavailable, construct a menu.
1926 font-symbol)
1929 '("--"))
1930 (setq font-symbol (intern (cadr font)))
1931 (define-key submenu-map (vector font-symbol)
1932 (list 'menu-item (car font) font-symbol)))))
1933 (define-key font-submenu (vector (intern submenu-name))
1934 (list 'menu-item submenu-name submenu-map))))
1935 (define-key mouse-appearance-menu-map [font-submenu]
1936 (list 'menu-item "Change Text Font" font-submenu)))))
1937 (let ((choice (x-popup-menu event mouse-appearance-menu-map)))
1938 (setq choice (nth (1- (length choice)) choice))
1939 (cond ((eq choice 'text-scale-increase)
1940 (text-scale-increase 1))
1941 ((eq choice 'text-scale-decrease)
1942 (text-scale-increase -1))
1943 ((eq choice 'face-remap-reset-base)
1944 (text-scale-mode 0)
1945 (buffer-face-mode 0))
1946 (choice
1947 ;; Either choice == 'x-select-font, or choice is a
1948 ;; symbol whose name is a font.
1949 (let ((font (if (eq choice 'x-select-font)
1950 (x-select-font)
1951 (symbol-name choice))))
1952 (buffer-face-mode-invoke
1953 (if (fontp font 'font-spec)
1954 (list :font font)
1955 (font-face-attributes font))
1956 t (called-interactively-p 'interactive)))))))))
1958 \f
1959 ;;; Bindings for mouse commands.
1961 (define-key global-map [down-mouse-1] 'mouse-drag-region)
1962 (global-set-key [mouse-1] 'mouse-set-point)
1963 (global-set-key [drag-mouse-1] 'mouse-set-region)
1965 ;; These are tested for in mouse-drag-region.
1966 (global-set-key [double-mouse-1] 'mouse-set-point)
1967 (global-set-key [triple-mouse-1] 'mouse-set-point)
1969 (defun mouse--strip-first-event (_prompt)
1970 (substring (this-single-command-raw-keys) 1))
1972 (define-key function-key-map [left-fringe mouse-1] 'mouse--strip-first-event)
1973 (define-key function-key-map [right-fringe mouse-1] 'mouse--strip-first-event)
1975 (global-set-key [mouse-2] 'mouse-yank-primary)
1976 ;; Allow yanking also when the corresponding cursor is "in the fringe".
1977 (define-key function-key-map [right-fringe mouse-2] 'mouse--strip-first-event)
1978 (define-key function-key-map [left-fringe mouse-2] 'mouse--strip-first-event)
1979 (global-set-key [mouse-3] 'mouse-save-then-kill)
1980 (define-key function-key-map [right-fringe mouse-3] 'mouse--strip-first-event)
1981 (define-key function-key-map [left-fringe mouse-3] 'mouse--strip-first-event)
1983 ;; By binding these to down-going events, we let the user use the up-going
1984 ;; event to make the selection, saving a click.
1985 (global-set-key [C-down-mouse-1] 'mouse-buffer-menu)
1986 (if (not (eq system-type 'ms-dos))
1987 (global-set-key [S-down-mouse-1] 'mouse-appearance-menu))
1988 ;; C-down-mouse-2 is bound in facemenu.el.
1989 (global-set-key [C-down-mouse-3]
1990 `(menu-item ,(purecopy "Menu Bar") ignore
1991 :filter (lambda (_)
1992 (if (zerop (or (frame-parameter nil 'menu-bar-lines) 0))
1993 (mouse-menu-bar-map)
1994 (mouse-menu-major-mode-map)))))
1996 ;; Binding mouse-1 to mouse-select-window when on mode-, header-, or
1997 ;; vertical-line prevents Emacs from signaling an error when the mouse
1998 ;; button is released after dragging these lines, on non-toolkit
1999 ;; versions.
2000 (global-set-key [mode-line mouse-1] 'mouse-select-window)
2001 (global-set-key [mode-line drag-mouse-1] 'mouse-select-window)
2002 (global-set-key [mode-line down-mouse-1] 'mouse-drag-mode-line)
2003 (global-set-key [header-line down-mouse-1] 'mouse-drag-header-line)
2004 (global-set-key [header-line mouse-1] 'mouse-select-window)
2005 (global-set-key [mode-line mouse-2] 'mouse-delete-other-windows)
2006 (global-set-key [mode-line mouse-3] 'mouse-delete-window)
2007 (global-set-key [mode-line C-mouse-2] 'mouse-split-window-horizontally)
2008 (global-set-key [vertical-scroll-bar C-mouse-2] 'mouse-split-window-vertically)
2009 (global-set-key [vertical-line C-mouse-2] 'mouse-split-window-vertically)
2010 (global-set-key [vertical-line down-mouse-1] 'mouse-drag-vertical-line)
2011 (global-set-key [vertical-line mouse-1] 'mouse-select-window)
2013 (provide 'mouse)
2015 ;;; mouse.el ends here