Mercurial > hg > xemacs-beta
annotate lisp/mwheel.el @ 5602:c9e5612f5424
Support the MP library on recent FreeBSD, have it pass relevant tests.
src/ChangeLog addition:
2011-11-26 Aidan Kehoe <kehoea@parhasard.net>
* number-mp.c (bignum_to_string):
Don't overwrite the accumulator we've just set up for this
function.
* number-mp.c (BIGNUM_TO_TYPE):
mp_itom() doesn't necessarily do what this code used to think with
negative numbers, it can treat them as unsigned ints. Subtract
numbers from bignum_zero instead of multiplying them by -1 to
convert them to their negative equivalents.
* number-mp.c (bignum_to_int):
* number-mp.c (bignum_to_uint):
* number-mp.c (bignum_to_long):
* number-mp.c (bignum_to_ulong):
* number-mp.c (bignum_to_double):
Use the changed BIGNUM_TO_TYPE() in these functions.
* number-mp.c (bignum_ceil):
* number-mp.c (bignum_floor):
In these functions, be more careful about rounding to positive and
negative infinity, respectively. Don't use the sign of QUOTIENT
when working out out whether to add or subtract one, rather use
the sign QUOTIENT would have if arbitrary-precision division were
done.
* number-mp.h:
* number-mp.h (MP_GCD):
Wrap #include <mp.h> in BEGIN_C_DECLS/END_C_DECLS.
* number.c (Fbigfloat_get_precision):
* number.c (Fbigfloat_set_precision):
Don't attempt to call XBIGFLOAT_GET_PREC if this build doesn't
support big floats.
| author | Aidan Kehoe <kehoea@parhasard.net> |
|---|---|
| date | Sat, 26 Nov 2011 17:59:14 +0000 |
| parents | 308d34e9f07d |
| children |
| rev | line source |
|---|---|
| 428 | 1 ;;; mwheel.el --- Mouse support for MS intelli-mouse type mice |
| 2 | |
| 3 ;; Copyright (C) 1998, Free Software Foundation, Inc. | |
| 4 ;; Maintainer: William M. Perry <wmperry@cs.indiana.edu> | |
| 5 ;; Keywords: mouse | |
| 6 | |
| 7 ;; This file is part of XEmacs. | |
| 8 | |
|
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9 ;; XEmacs is free software: you can redistribute it and/or modify it |
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10 ;; under the terms of the GNU General Public License as published by the |
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11 ;; Free Software Foundation, either version 3 of the License, or (at your |
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12 ;; option) any later version. |
| 428 | 13 |
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14 ;; XEmacs is distributed in the hope that it will be useful, but WITHOUT |
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15 ;; ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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16 ;; FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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17 ;; for more details. |
| 428 | 18 |
| 19 ;; You should have received a copy of the GNU General Public License | |
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20 ;; along with XEmacs. If not, see <http://www.gnu.org/licenses/>. |
| 428 | 21 |
| 22 ;;; Synched up with: Not synched. | |
| 23 | |
| 24 ;;; Commentary: | |
| 25 | |
| 26 ;; This code will enable the use of the infamous 'wheel' on the new | |
| 27 ;; crop of mice. Under XFree86 and the XSuSE X Servers, the wheel | |
| 28 ;; events are sent as button4/button5 events. | |
| 29 | |
| 30 ;; I for one would prefer some way of converting the button4/button5 | |
| 31 ;; events into different event types, like 'mwheel-up' or | |
| 32 ;; 'mwheel-down', but I cannot find a way to do this very easily (or | |
| 33 ;; portably), so for now I just live with it. | |
| 34 | |
| 35 ;; To enable this code, simply put this at the top of your .emacs | |
| 36 ;; file: | |
| 37 ;; | |
| 38 ;; (autoload 'mwheel-install "mwheel" "Enable mouse wheel support.") | |
| 39 ;; (mwheel-install) | |
| 40 | |
| 41 ;;; Code: | |
| 42 | |
| 43 (require 'custom) | |
| 44 (require 'cl) | |
| 45 | |
| 502 | 46 (globally-declare-fboundp |
| 47 '(event-basic-type | |
| 48 posn-window event-start mwheel-event-window mwheel-event-button)) | |
| 49 | |
| 1621 | 50 (defcustom mwheel-scroll-amount '(5 1 nil) |
| 428 | 51 "Amount to scroll windows by when spinning the mouse wheel. |
| 1621 | 52 A list with 3 elements specifying the amount to scroll on: a normal wheel |
| 53 event, a wheel event with the shift key pressed, and a wheel event with the | |
| 54 control key pressed, in that order. | |
| 428 | 55 |
| 56 Each item should be the number of lines to scroll, or `nil' for near | |
| 57 full screen. | |
| 58 A near full screen is `next-screen-context-lines' less than a full screen." | |
| 59 :group 'mouse | |
| 1621 | 60 :type '(list |
| 428 | 61 (choice :tag "Normal" |
| 62 (const :tag "Full screen" :value nil) | |
| 63 (integer :tag "Specific # of lines")) | |
| 64 (choice :tag "Shifted" | |
| 65 (const :tag "Full screen" :value nil) | |
| 1621 | 66 (integer :tag "Specific # of lines")) |
| 67 (choice :tag "Controlled" | |
| 68 (const :tag "Full screen" :value nil) | |
| 428 | 69 (integer :tag "Specific # of lines")))) |
| 70 | |
| 71 (defcustom mwheel-follow-mouse nil | |
| 72 "Whether the mouse wheel should scroll the window that the mouse is over. | |
| 73 This can be slightly disconcerting, but some people may prefer it." | |
| 74 :group 'mouse | |
| 75 :type 'boolean) | |
| 76 | |
| 77 (if (not (fboundp 'event-button)) | |
| 78 (defun mwheel-event-button (event) | |
| 79 (let ((x (symbol-name (event-basic-type event)))) | |
| 80 (if (not (string-match "^mouse-\\([0-9]+\\)" x)) | |
| 81 (error "Not a button event: %S" event)) | |
| 82 (string-to-int (substring x (match-beginning 1) (match-end 1))))) | |
| 83 (fset 'mwheel-event-button 'event-button)) | |
| 84 | |
| 85 (if (not (fboundp 'event-window)) | |
| 86 (defun mwheel-event-window (event) | |
| 87 (posn-window (event-start event))) | |
| 88 (fset 'mwheel-event-window 'event-window)) | |
| 89 | |
| 90 (defun mwheel-scroll (event) | |
| 91 (interactive "e") | |
| 92 (let ((curwin (if mwheel-follow-mouse | |
| 93 (prog1 | |
| 94 (selected-window) | |
| 95 (select-window (mwheel-event-window event))))) | |
| 96 (amt (if (memq 'shift (event-modifiers event)) | |
| 1621 | 97 (cadr mwheel-scroll-amount) |
| 98 (if (memq 'control (event-modifiers event)) | |
| 99 (caddr mwheel-scroll-amount) | |
| 100 (car mwheel-scroll-amount))))) | |
| 458 | 101 (unwind-protect |
| 102 (case (mwheel-event-button event) | |
| 103 (4 (scroll-down amt)) | |
| 104 (5 (scroll-up amt)) | |
| 105 (otherwise (error "Bad binding in mwheel-scroll"))) | |
| 106 (if curwin (select-window curwin))) | |
| 107 )) | |
| 428 | 108 |
| 109 ;;;###autoload | |
| 110 (defun mwheel-install () | |
| 111 "Enable mouse wheel support." | |
| 444 | 112 (interactive) |
| 1621 | 113 (let ((keys '([(mouse-4)] [(shift mouse-4)] [(control mouse-4)] |
| 114 [(mouse-5)] [(shift mouse-5)] [(control mouse-5)]))) | |
| 115 | |
| 428 | 116 ;; This condition-case is here because Emacs 19 will throw an error |
| 117 ;; if you try to define a key that it does not know about. I for one | |
| 118 ;; prefer to just unconditionally do a mwheel-install in my .emacs, so | |
| 119 ;; that if the wheeled-mouse is there, it just works, and this way it | |
| 120 ;; doesn't yell at me if I'm on my laptop or another machine, etc. | |
| 121 (condition-case () | |
| 122 (while keys | |
| 123 (define-key global-map (car keys) 'mwheel-scroll) | |
| 124 (setq keys (cdr keys))) | |
| 125 (error nil)))) | |
| 458 | 126 |
| 2546 | 127 ;;;###autoload |
| 128 (define-behavior 'mwheel | |
| 129 "This code enables the use of the infamous 'wheel' on the new | |
| 130 crop of mice. Under XFree86 and the XSuSE X Servers, the wheel | |
| 131 events are sent as button4/button5 events, which are automatically | |
| 132 set up to do scrolling in the expected way. The actual way that the | |
| 133 scrolling works can be controlled by `mwheel-scroll-amount' and | |
| 134 `mwheel-follow-mouse'." | |
| 135 :group 'mouse | |
| 136 :short-doc "Mouse wheel support for X Windows" | |
| 137 :enable 'mwheel-install) | |
| 138 | |
| 428 | 139 (provide 'mwheel) |
| 140 | |
| 141 ;;; mwheel.el ends here |