| blob | 0367cad87b8ecb0c6872264b85983318d14baecc |
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 "Turn `mouse-1' events into `mouse-2' events if follows-link.
98 Expects to be bound to `down-mouse-1' in `key-translation-map'."
107 nil
116 nil
121 ;; Turn the mouse-1 into a mouse-2 to follow links.
126 ;; If mouse-2 has never been done by the user, it doesn't have
127 ;; the necessary property to be interpreted correctly.
131 ;; Modify the event in place, so read-key-sequence doesn't
132 ;; generate a second fake prefix key (see fake_prefixed_keys in
133 ;; src/keyboard.c).
137 nil))))))
144 \f
145 ;; Provide a mode-specific menu on a mouse button.
148 "Popup the given menu and call the selected option.
149 MENU can be a keymap, an easymenu-style menu or a list of keymaps as for
150 `x-popup-menu'.
151 The menu is shown at the place where POSITION specifies. About
152 the form of POSITION, see `popup-menu-normalize-position'.
153 PREFIX is the prefix argument (if any) to pass to the command."
161 event cmd
163 ;; The looping behavior was taken from lmenu's popup-menu-popup
165 ;; map could be a prefix key, in which case
166 ;; we need to get its function cell
167 ;; definition.
169 ;; Strangely x-popup-menu returns a list.
170 ;; mouse-major-mode-menu was using a weird:
171 ;; (key-binding (apply 'vector (append '(menu-bar) menu-prefix events)))
174 ;; We were given a list of keymaps. Search them all
175 ;; in sequence until a first binding is found.
177 binding)
183 binding)
184 ;; We were given a single keymap.
186 ;; Clear out echoing, which perhaps shows a prefix arg.
188 ;; Maybe try again but with the submap.
190 ;; If the user did not cancel by refusing to select,
191 ;; and if the result is a command, run it.
194 ;; `setup-specified-language-environment', for instance,
195 ;; expects this to be set from a menu keymap.
197 ;; mouse-major-mode-menu was using `command-execute' instead.
201 "Convert the POSITION to the form which `popup-menu' expects internally.
202 POSITION can an event, a posn- value, a value having
203 form ((XOFFSET YOFFSET) WINDOW), or nil.
204 If nil, the current mouse position is used."
206 ;; nil -> mouse cursor position
207 (`nil
210 ;; Value returned from `event-end' or `posn-at-point'.
215 ;; Event.
221 "Show menu for minor mode specified by INDICATOR.
222 Interactively, INDICATOR is read using completion.
223 If there is no menu defined for the minor mode, then create one with
224 items `Turn Off' and `Help'."
227 "Minor mode indicator: "
238 ,indicator
246 "Show minor-mode menu for EVENT on minor modes area of the mode line."
257 ;; Make a keymap in which our last command leads to a menu or
258 ;; default to the edit menu.
262 menu-bar-edit-menu)))
265 newmap))
268 "Return menu keybar MENUBAR, or a lone submenu inside it.
269 If MENUBAR defines exactly one submenu, return just that submenu.
270 Otherwise, return MENUBAR."
277 menubar
281 "Return a keymap equivalent to the menu bar.
282 The contents are the items that would be in the menu bar whether or
283 not it is actually displayed."
288 ;; If a keymap doesn't have a prompt string (a lazy
289 ;; programmer didn't bother to provide one), create it and
290 ;; insert it into the keymap; each keymap gets its own
291 ;; prompt. This is required for non-toolkit versions to
292 ;; display non-empty menu pane names.
305 minor-mode)))
308 menu))
322 ;; Supplying the list is faster than making a new map.
323 ;; FIXME: We have a problem here: we have to use the global/local/minor
324 ;; so they're displayed in the expected order, but later on in the command
325 ;; loop, they're actually looked up in the opposite order.
327 global-menu
328 local-menu
329 minor-mode-menus)))
332 "Pop up a mode-specific menu of mouse commands.
333 Default to the Edit menu if the major mode doesn't define a menu."
340 "Pop up a menu equivalent to the menu bar for keyboard EVENT with PREFIX.
341 The contents are the items that would be in the menu bar whether or
342 not it is actually displayed."
349 "Popup a menu like either `mouse-major-mode-menu' or `mouse-popup-menubar'.
350 Use the former if the menu bar is showing, otherwise the latter."
358 event prefix))
359 \f
360 ;; Commands that operate on windows.
367 ;; Give temporary modes such as isearch a chance to turn off.
371 "Delete the window you click on.
372 Do nothing if the frame has just one window.
373 This command must be bound to a mouse click."
380 "Select the window clicked on; don't move point."
392 "Delete the window clicked on, and create a new frame displaying its buffer."
403 "Delete all windows except the one you click on."
408 "Select Emacs window mouse is on, then split it vertically in half.
409 The window is split at the line clicked on.
410 This command must be bound to a mouse click."
424 "Select Emacs window mouse is on, then split it horizontally in half.
425 The window is split at the column clicked on.
426 This command must be bound to a mouse click."
439 ;; `mouse-drag-line' is now the common routine for handling all line
440 ;; dragging events combining the earlier `mouse-drag-mode-line-1' and
441 ;; `mouse-drag-vertical-line'. It should improve the behavior of line
442 ;; dragging wrt Emacs 23 as follows:
444 ;; (1) Gratuitous error messages and restrictions have been (hopefully)
445 ;; removed. (The help-echo that dragging the mode-line can resize a
446 ;; one-window-frame's window will still show through via bindings.el.)
448 ;; (2) No gratuitous selection of other windows should happen. (This
449 ;; has not been completely fixed for mouse-autoselected windows yet.)
451 ;; (3) Mouse clicks below a scroll-bar should pass through via unread
452 ;; command events.
454 ;; Note that `window-in-direction' replaces `mouse-drag-window-above'
455 ;; and `mouse-drag-vertical-line-rightward-window' with Emacs 24.1.
458 "Drag a mode line, header line, or vertical line with the mouse.
459 START-EVENT is the starting mouse-event of the drag action. LINE
460 must be one of the symbols `header', `mode', or `vertical'."
461 ;; Give temporary modes such as isearch a chance to turn off.
473 event position growth dragged)
476 ;; Check whether header-line can be dragged at all.
481 ;; Check whether mode-line can be dragged at all.
483 ;; Allow resizing the minibuffer window if it's on the same
484 ;; frame as and immediately below the clicked window, and
485 ;; it's active or `resize-mini-windows' is nil.
494 ;; Get the window to adjust for the vertical case. If the
495 ;; scroll bar is on the window's right or there's no scroll bar
496 ;; at all, adjust the window where the start-event occurred. If
497 ;; the scroll bar is on the start-event window's left, adjust
498 ;; the window on the left of it.
502 ;; Start tracking.
504 ;; Loop reading events and sampling the position of the mouse,
505 ;; until there is a non-mouse-movement event. Also,
506 ;; scroll-bar-movement events are the same as mouse movement for
507 ;; our purposes. (Why? -- cyd)
508 ;; If you change this, check that all of the following still work:
509 ;; Resizing windows by dragging mode-lines and header lines,
510 ;; and vertical lines (in windows without scroll bars).
511 ;; Doing this should not select another window, even if
512 ;; mouse-autoselect-window is non-nil.
513 ;; Mouse-1 clicks in Info header lines should advance position
514 ;; by one node at a time if mouse-1-click-follows-link is non-nil,
515 ;; otherwise they should just select the window.
520 switch-frame select-window)))
522 ;; Do nothing if
523 ;; - there is a switch-frame event.
524 ;; - the mouse isn't in the frame that we started in
525 ;; - the mouse isn't in any Emacs frame
528 nil)
531 nil)
533 ;; Drag vertical divider.
542 ;; Drag horizontal divider.
546 ;; The window's top includes the header line!
551 growth
553 ;; Process the terminating event.
558 "Change the height of a window by dragging on the mode line."
563 "Change the height of a window by dragging on the header line."
568 "Change the width of a window by dragging on the vertical line."
571 \f
573 "Move point to the position clicked on with the mouse.
574 This should be bound to a mouse click event type."
577 ;; Use event-end in case called from mouse-drag-region.
578 ;; If EVENT is a click, event-end and event-start give same value.
586 "Return non-nil if there's an active region that was set with the mouse."
593 "Set the region to the text dragged over, and copy to kill ring.
594 This should be bound to a mouse drag event.
595 See the `mouse-drag-copy-region' variable to control whether this
596 command alters the kill ring or not."
603 ;; Don't set this-command to `kill-region', so a following
604 ;; C-w won't double the text in the kill ring. Ignore
605 ;; `last-command' so we don't append to a preceding kill.
609 ;; On a text terminal, bounce the cursor.
619 ;; Set transient-mark-mode for a little while.
624 transient-mark-mode))))
630 "The pause between scroll steps caused by mouse drags, in seconds.
631 If you drag the mouse beyond the edge of a window, Emacs scrolls the
632 window to bring the text beyond that edge into view, with a delay of
633 this many seconds between scroll steps. Scrolling stops when you move
634 the mouse back into the window, or release the button.
635 This variable's value may be non-integral.
636 Setting this to zero causes Emacs to scroll as fast as it can."
641 "The minimum number of lines scrolled by dragging mouse out of window.
642 Moving the mouse out the top or bottom edge of the window begins
643 scrolling repeatedly. The number of lines scrolled per repetition
644 is normally equal to the number of lines beyond the window edge that
645 the mouse has moved. However, it always scrolls at least the number
646 of lines specified by this variable."
651 "Scroll the window WINDOW, JUMP lines at a time, until new input arrives.
652 If OVERLAY is an overlay, let it stretch from START to the far edge of
653 the newly visible text.
654 Upon exit, point is at the far edge of the newly visible text."
670 ;; window-end doesn't reflect the window's new
671 ;; start position until the next redisplay.
677 ;; Now that we have scrolled WINDOW properly,
678 ;; put point back where it was for the redisplay
679 ;; so that we don't mess up the selected window.
691 "Set the region to the text that the mouse is dragged over.
692 Highlight the drag area as you move the mouse.
693 This must be bound to a button-down mouse event.
694 In Transient Mark mode, the highlighting remains as long as the mark
695 remains active. Otherwise, it remains until the next input event.
697 If the click is in the echo area, display the `*Messages*' buffer."
699 ;; Give temporary modes such as isearch a chance to turn off.
705 "Look for a property at click position.
706 POS may be either a buffer position or a click position like
707 those returned from `event-start'. If the click position is on
708 a string, the text property PROPERTY is examined.
709 If this is nil or the click is not on a string, then
710 the corresponding buffer position is searched for PROPERTY.
711 If PROPERTY is encountered in one of those places,
712 its value is returned."
723 "Return non-nil if POS is on a link in the current buffer.
724 POS must be a buffer position in the current buffer or a mouse
725 event location in the selected window (see `event-start').
726 However, if `mouse-1-click-in-non-selected-windows' is non-nil,
727 POS may be a mouse event location in any window.
729 A clickable link is identified by one of the following methods:
731 - If the character at POS has a non-nil `follow-link' text or
732 overlay property, the value of that property determines what to do.
734 - If there is a local key-binding or a keybinding at position POS
735 for the `follow-link' event, the binding of that event determines
736 what to do.
738 The resulting value determine whether POS is inside a link:
740 - If the value is `mouse-face', POS is inside a link if there
741 is a non-nil `mouse-face' property at POS. Return t in this case.
743 - If the value is a function, FUNC, POS is inside a link if
744 the call \(FUNC POS) returns non-nil. Return the return value
745 from that call. Arg is \(posn-point POS) if POS is a mouse event.
747 - Otherwise, return the value itself.
749 The return value is interpreted as follows:
751 - If it is a string, the mouse-1 event is translated into the
752 first character of the string, i.e. the action of the mouse-1
753 click is the local or global binding of that character.
755 - If it is a vector, the mouse-1 event is translated into the
756 first element of that vector, i.e. the action of the mouse-1
757 click is the local or global binding of that event.
759 - Otherwise, the mouse-1 event is translated into a mouse-2 event
760 at the same position."
763 mouse-1-click-in-non-selected-windows
774 ;; FIXME: This seems questionable if the click is not in a buffer.
775 ;; Should we instead decide that `action' takes a `posn'?
783 "Fix help message MSG for `mouse-1-click-follows-link'."
803 msg)
806 do-mouse-drag-region-post-process)
807 "Track mouse drags by highlighting area between point and cursor.
808 The region will be defined with mark and point.
809 DO-MOUSE-DRAG-REGION-POST-PROCESS should only be used by
810 `mouse-drag-region'."
815 ;; We've recorded what we needed from the current buffer and
816 ;; window, now let's jump to the place of the event, where things
817 ;; are happening.
830 ;; Don't count the mode line.
833 ;; Suppress automatic hscrolling, because that is a nuisance
834 ;; when setting point near the right fringe (but see below).
837 moved-off-start event end end-point)
840 ;; In case the down click is in the middle of some intangible text,
841 ;; use the end of that text, and put it in START-POINT.
846 ;; Activate the region, using `mouse-start-end' to determine where
847 ;; to put point and mark (e.g., double-click will select a word).
856 ;; Track the mouse until we get a non-movement event.
863 ;; Automatic hscrolling did not occur during the call to
864 ;; `read-event'; but if the user subsequently drags the
865 ;; mouse, go ahead and hscroll.
870 ;; Note whether the mouse has left the starting position.
876 end-point click-count)
882 nil start-point))
885 nil start-point))))))))
887 ;; Handle the terminating event if possible.
889 ;; Ensure that point is on the end of the last event.
895 end-point click-count))
897 ;; Find its binding.
899 ;; FIXME This doesn't make sense, because
900 ;; event-click-count always returns something >= 1.
904 mouse-set-region))))))
908 ;; If point has moved, finish the drag.
911 do-mouse-drag-region-post-process
915 ;; Otherwise, run binding of terminating up-event.
924 ;; Don't run the up-event handler if the window
925 ;; start changed in a redisplay after the
926 ;; mouse-set-point for the down-mouse event at
927 ;; the beginning of this function. When the
928 ;; window start has changed, the up-mouse event
929 ;; contains a different position due to the new
930 ;; window contents, and point is set again.
933 start-window-start)))
951 ;; Commands to handle xterm-style multiple clicks.
953 "Skip over word, over whitespace, or over identical punctuation.
954 If DIR is positive skip forward; if negative, skip backward."
958 ;; Here, we can't use skip-syntax-forward/backward because
959 ;; they don't pay attention to word-separating-categories,
960 ;; and thus they will skip over a true word boundary. So,
961 ;; we simulate the original behavior by using forward-word.
983 "Return a list of region bounds based on START and END according to MODE.
984 If MODE is 0 then set point to (min START END), mark to (max START END).
985 If MODE is 1 then set point to start of word at (min START END),
986 mark to end of word at (max START END).
987 If MODE is 2 then do the same for lines."
991 end temp)))
1055 \f
1056 ;; Subroutine: set the mark where CLICK happened,
1057 ;; but don't do anything else.
1074 ;; Use reverse, not nreverse, since event-modifiers
1075 ;; does not copy the list it returns.
1078 event)))
1082 t
1084 nil)))
1086 ;; Momentarily show where the mark is, if highlighting doesn't show it.
1089 "Set mark at the position clicked on with the mouse.
1090 Display cursor at that position for a second.
1091 This must be bound to a mouse click."
1095 ;; We don't use save-excursion because that preserves the mark too.
1105 "Kill the region between point and the mouse click.
1117 "Insert the last stretch of killed text at the position clicked on.
1118 Also move point to one end of the text thus inserted (normally the end),
1119 and set mark at the beginning.
1121 If `mouse-yank-at-point' is non-nil, insert at point
1122 regardless of where you click."
1124 ;; Give temporary modes such as isearch a chance to turn off.
1127 ;; Without this, confusing things happen upon e.g. inserting into
1128 ;; the middle of an active region.
1136 "Insert the primary selection at the position clicked on.
1137 Move point to the end of the inserted text, and set mark at
1138 beginning. If `mouse-yank-at-point' is non-nil, insert at point
1139 regardless of where you click."
1141 ;; Give temporary modes such as isearch a chance to turn off.
1143 ;; Without this, confusing things happen upon e.g. inserting into
1144 ;; the middle of an active region.
1152 ;; MS-Windows emulates PRIMARY in x-get-selection, but not
1153 ;; in x-get-selection-value (the latter only accesses the
1154 ;; clipboard). So try PRIMARY first, in case they selected
1155 ;; something with the mouse in the current Emacs session.
1159 ;; On X, x-get-selection-value supports more formats and
1160 ;; encodings, so use it in preference to x-get-selection.
1163 ;; FIXME: What about xterm-mouse-mode etc.?
1172 "Copy the region between point and the mouse click in the kill ring.
1179 ;; This function used to delete the text between point and the mouse
1180 ;; whenever it was equal to the front of the kill ring, but some
1181 ;; people found that confusing.
1183 ;; The position of the last invocation of `mouse-save-then-kill'.
1187 ;; We must make our own undo boundaries
1188 ;; because they happen automatically only for the current buffer.
1191 ;; If we have no undo list in this buffer,
1192 ;; just delete.
1194 ;; Delete, but make the undo-list entry share with the kill ring.
1195 ;; First, delete just one char, so in case buffer is being modified
1196 ;; for the first time, the undo list records that fact.
1201 ;; Undo that deletion--but don't change the undo list!
1204 ;; Now delete the rest of the specified region,
1205 ;; but don't record it.
1211 ;; Search back in buffer-undo-list for the string
1212 ;; that came from deleting one character.
1215 ;; Replace it with an entry for the entire deleted text.
1221 "Set the region according to CLICK; the second time, kill it.
1222 CLICK should be a mouse click event.
1224 If the region is inactive, activate it temporarily. Set mark at
1225 the original point, and move point to the position of CLICK.
1227 If the region is already active, adjust it. Normally, do this by
1228 moving point or mark, whichever is closer, to CLICK. But if you
1229 have selected whole words or lines, move point or mark to the
1230 word or line boundary closest to CLICK instead.
1232 If `mouse-drag-copy-region' is non-nil, this command also saves the
1233 new region to the kill ring (replacing the previous kill if the
1234 previous region was just saved to the kill ring).
1236 If this command is called a second consecutive time with the same
1237 CLICK position, kill the region (or delete it
1238 if `mouse-drag-copy-region' is non-nil)"
1245 ;; Don't let a subsequent kill command append to this one.
1247 ;; Check if the user has multi-clicked to select words/lines.
1251 mouse-selection-click-count
1255 ;; If the user clicked without moving point, kill the region.
1256 ;; This also resets `mouse-selection-click-count'.
1261 ;; Region already saved in the previous click;
1262 ;; don't make a duplicate entry, just delete.
1268 ;; Otherwise, if there is a suitable region, adjust it by moving
1269 ;; one end (whichever is closer) to CLICK-PT.
1274 mouse-save-then-kill-posn)
1276 mouse-set-region))
1288 ;; Region already copied to kill-ring once, so replace.
1290 ;; Arrange for a repeated mouse-3 to kill the region.
1293 ;; Otherwise, set the mark where point is and move to CLICK-PT.
1305 \f
1316 ol)
1317 "An overlay which records the current secondary selection.
1322 ;; A marker which records the specified first end for a secondary selection.
1323 ;; May be nil.
1327 "Set one end of the secondary selection to the position clicked on.
1329 and complete the secondary selection."
1334 ;; Cancel any preexisting secondary selection.
1343 "Set the secondary selection to the text that the mouse is dragged over.
1344 This must be bound to a mouse drag event."
1348 beg
1355 'SECONDARY
1360 "Set the secondary selection to the text that the mouse is dragged over.
1361 Highlight the drag area as you move the mouse.
1362 This must be bound to a button-down mouse event.
1363 The function returns a non-nil value if it creates a secondary selection."
1374 ;; Don't count the mode line.
1380 ;; Double or triple press: make an initial selection
1381 ;; of one word or line.
1386 ;; Single-press: cancel any preexisting secondary selection.
1399 nil
1403 ;; Are we moving within the original window?
1407 click-count)))
1420 mouse-secondary-overlay start-point))
1423 mouse-secondary-overlay start-point)))))))))
1434 nil))
1436 'SECONDARY
1441 "Insert the secondary selection at the position clicked on.
1442 Move point to the end of the inserted text.
1443 If `mouse-yank-at-point' is non-nil, insert at point
1444 regardless of where you click."
1446 ;; Give temporary modes such as isearch a chance to turn off.
1455 "Kill the text in the secondary selection.
1456 This is intended more as a keyboard command than as a mouse command
1457 but it can work as either one.
1459 The current buffer (in case of keyboard use), or the buffer clicked on,
1460 must be the one that the secondary selection is in. This requirement
1461 is to prevent accidents."
1477 "Set the secondary selection and save it to the kill ring.
1478 The second time, kill it. CLICK should be a mouse click event.
1480 If you have not called `mouse-start-secondary' in the clicked
1481 buffer, activate the secondary selection and set it between point
1482 and the click position CLICK.
1484 Otherwise, adjust the bounds of the secondary selection.
1485 Normally, do this by moving its beginning or end, whichever is
1486 closer, to CLICK. But if you have selected whole words or lines,
1487 adjust to the word or line boundary closest to CLICK instead.
1489 If this command is called a second consecutive time with the same
1490 CLICK position, kill the secondary selection."
1497 ;; Don't let a subsequent kill command append to this one.
1499 ;; Check if the user has multi-clicked to select words/lines.
1502 mouse-secondary-click-count
1510 ;; If the secondary selection is not active in BUF, activate it.
1520 ;; If the user clicked without moving point, delete the secondary
1521 ;; selection. This also resets `mouse-secondary-click-count'.
1530 ;; Otherwise, if there is a suitable secondary selection overlay,
1531 ;; adjust it by moving one end (whichever is closer) to CLICK-PT.
1540 ;; If the front of the kill ring comes from an immediately
1541 ;; previous use of this command, replace the entry.
1545 t)
1551 ;; Otherwise, set the secondary selection overlay.
1555 ;; All we have is one end of a selection, so put the other
1556 ;; end here.
1562 ;; Finally, set the window system's secondary selection.
1570 \f
1572 "Number of buffers in one pane (submenu) of the buffer menu.
1573 If we have lots of buffers, divide them into groups of
1574 `mouse-buffer-menu-maxlen' and make a pane (or submenu) for each one."
1581 will split the buffer menu by the major modes (see
1582 `mouse-buffer-menu-mode-groups') or just by menu length.
1583 Set to 1 (or even 0!) if you want to group by major mode always, and to
1584 a large number if you prefer a mixed multitude. The default is 4."
1600 ("Threads\\|Memory\\|Disassembly\\|Breakpoints\\|Frames\\|Locals\\|Registers\\|Inferior I/O\\|Debugger"
1604 Each element has the form (REGEXP . GROUPNAME).
1608 "Pop up a menu of buffers for selection with the mouse.
1609 This switches buffers in the window that you clicked on,
1610 and selects that window."
1614 ;; Make an alist of elements that look like (MENU-ITEM . BUFFER).
1616 ;; Divide all buffers into buckets for various major modes.
1617 ;; Each bucket looks like (MODE NAMESTRING BUFFERS...).
1627 adjusted-major-mode
1632 ;; Compute the sum of squares of sizes of the major-mode buckets.
1637 (+ sum-of-squares
1642 ;; Subdividing by major modes really helps, so let's do it.
1644 ;; Sort the list to put the most popular major modes first.
1649 ;; Make a separate submenu for each major mode
1650 ;; that has more than one buffer,
1651 ;; unless all the remaining buffers are less than 1/10 of them.
1661 this-mode-list)
1662 subdivided-menus))))
1666 ;; If any major modes are left over,
1667 ;; make a single submenu for them.
1671 ;; we don't need split-by-major-mode any more,
1672 ;; so we can ditch it with nconc.
1677 subdivided-menus)))))
1688 window))
1694 head)
1723 list-buffers-directory)))
1725 elt)
1726 head))))
1728 ;; Compensate for the reversal that the above loop does.
1732 ;; If we have lots of buffers, divide them into groups of 20
1733 ;; and make a pane (or submenu) for each one.
1738 ;; Pull off the next mouse-buffer-menu-maxlen buffers
1739 ;; and make them the next element of sublist.
1743 nil))
1745 sublists))
1749 ;; Few buffers--put them all in one pane.
1751 \f
1755 ;; Font selection.
1774 ;; For these, we specify the pixel height and width.
1803 ;; We don't seem to have these; who knows what they are.
1804 ;; ("fg-18" "fg-18")
1805 ;; ("fg-25" "fg-25")
1806 ("lucidasanstypewriter-12" "-b&h-lucidatypewriter-medium-r-normal-sans-*-120-*-*-*-*-iso8859-1")
1807 ("lucidasanstypewriter-bold-14" "-b&h-lucidatypewriter-bold-r-normal-sans-*-140-*-*-*-*-iso8859-1")
1810 ;; ("lucidatypewriter-bold-r-24" "-b&h-lucidatypewriter-bold-r-normal-sans-24-240-75-75-m-140-iso8859-1")
1811 ;; ("fixed-medium-20" "-misc-fixed-medium-*-*-*-20-*-*-*-*-*-*-*")
1812 )))
1818 ;; For these, we specify the point height.
1843 ))))
1849 "Prompt for a font name, using `x-popup-menu', and return it."
1856 last-nonmenu-event
1864 "Set the default font for the selected frame.
1865 The argument FONTS is a list of font names; the first valid font
1866 in this list is used.
1868 When called interactively, pop up a menu and allow the user to
1869 choose a font."
1875 last-nonmenu-event
1877 ;; Append list of fontsets currently defined.
1899 "Show a menu for changing the default face in the current buffer."
1905 nil ; regenerate new fonts
1906 ;; Initialize mouse-appearance-menu-map
1915 ;; Font selector
1919 ;; If the select-font is unavailable, construct a menu.
1928 font-symbol)
1931 '("--"))
1932 (setq font-symbol (intern (cadr font)))
1933 (define-key submenu-map (vector font-symbol)
1934 (list 'menu-item (car font) font-symbol)))))
1935 (define-key font-submenu (vector (intern submenu-name))
1936 (list 'menu-item submenu-name submenu-map))))
1937 (define-key mouse-appearance-menu-map [font-submenu]
1938 (list 'menu-item "Change Text Font" font-submenu)))))
1939 (let ((choice (x-popup-menu event mouse-appearance-menu-map)))
1940 (setq choice (nth (1- (length choice)) choice))
1941 (cond ((eq choice 'text-scale-increase)
1942 (text-scale-increase 1))
1943 ((eq choice 'text-scale-decrease)
1944 (text-scale-increase -1))
1945 ((eq choice 'face-remap-reset-base)
1946 (text-scale-mode 0)
1947 (buffer-face-mode 0))
1948 (choice
1949 ;; Either choice == 'x-select-font, or choice is a
1950 ;; symbol whose name is a font.
1951 (let ((font (if (eq choice 'x-select-font)
1952 (x-select-font)
1953 (symbol-name choice))))
1954 (buffer-face-mode-invoke
1955 (if (fontp font 'font-spec)
1956 (list :font font)
1957 (font-face-attributes font))
1958 t (called-interactively-p 'interactive)))))))))
1960 \f
1961 ;;; Bindings for mouse commands.
1963 (define-key global-map [down-mouse-1] 'mouse-drag-region)
1964 (global-set-key [mouse-1] 'mouse-set-point)
1965 (global-set-key [drag-mouse-1] 'mouse-set-region)
1967 ;; These are tested for in mouse-drag-region.
1968 (global-set-key [double-mouse-1] 'mouse-set-point)
1969 (global-set-key [triple-mouse-1] 'mouse-set-point)
1971 (defun mouse--strip-first-event (_prompt)
1972 (substring (this-single-command-raw-keys) 1))
1974 (define-key function-key-map [left-fringe mouse-1] 'mouse--strip-first-event)
1975 (define-key function-key-map [right-fringe mouse-1] 'mouse--strip-first-event)
1977 (global-set-key [mouse-2] 'mouse-yank-primary)
1978 ;; Allow yanking also when the corresponding cursor is "in the fringe".
1979 (define-key function-key-map [right-fringe mouse-2] 'mouse--strip-first-event)
1980 (define-key function-key-map [left-fringe mouse-2] 'mouse--strip-first-event)
1981 (global-set-key [mouse-3] 'mouse-save-then-kill)
1982 (define-key function-key-map [right-fringe mouse-3] 'mouse--strip-first-event)
1983 (define-key function-key-map [left-fringe mouse-3] 'mouse--strip-first-event)
1985 ;; By binding these to down-going events, we let the user use the up-going
1986 ;; event to make the selection, saving a click.
1987 (global-set-key [C-down-mouse-1] 'mouse-buffer-menu)
1988 (if (not (eq system-type 'ms-dos))
1989 (global-set-key [S-down-mouse-1] 'mouse-appearance-menu))
1990 ;; C-down-mouse-2 is bound in facemenu.el.
1991 (global-set-key [C-down-mouse-3]
1992 `(menu-item ,(purecopy "Menu Bar") ignore
1993 :filter (lambda (_)
1994 (if (zerop (or (frame-parameter nil 'menu-bar-lines) 0))
1995 (mouse-menu-bar-map)
1996 (mouse-menu-major-mode-map)))))
1998 ;; Binding mouse-1 to mouse-select-window when on mode-, header-, or
1999 ;; vertical-line prevents Emacs from signaling an error when the mouse
2000 ;; button is released after dragging these lines, on non-toolkit
2001 ;; versions.
2002 (global-set-key [mode-line mouse-1] 'mouse-select-window)
2003 (global-set-key [mode-line drag-mouse-1] 'mouse-select-window)
2004 (global-set-key [mode-line down-mouse-1] 'mouse-drag-mode-line)
2005 (global-set-key [header-line down-mouse-1] 'mouse-drag-header-line)
2006 (global-set-key [header-line mouse-1] 'mouse-select-window)
2007 (global-set-key [mode-line mouse-2] 'mouse-delete-other-windows)
2008 (global-set-key [mode-line mouse-3] 'mouse-delete-window)
2009 (global-set-key [mode-line C-mouse-2] 'mouse-split-window-horizontally)
2010 (global-set-key [vertical-scroll-bar C-mouse-2] 'mouse-split-window-vertically)
2011 (global-set-key [vertical-line C-mouse-2] 'mouse-split-window-vertically)
2012 (global-set-key [vertical-line down-mouse-1] 'mouse-drag-vertical-line)
2013 (global-set-key [vertical-line mouse-1] 'mouse-select-window)
2015 (provide 'mouse)
2017 ;;; mouse.el ends here