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annotate lisp/scrollbar.el @ 5640:e6b5c49f9e13
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| author | Vin Shelton <acs@xemacs.org> |
|---|---|
| date | Sun, 08 Jan 2012 22:29:06 -0500 |
| parents | 308d34e9f07d |
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| rev | line source |
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| 428 | 1 ;;; scrollbar.el --- Scrollbar support for XEmacs |
| 2 | |
| 3 ;; Copyright (C) 1995, 1997 Free Software Foundation, Inc. | |
| 4 | |
| 5 ;; Maintainer: XEmacs Development Team | |
| 6 ;; Keywords: internal, extensions, dumped | |
| 7 | |
| 8 ;; This file is part of XEmacs. | |
| 9 | |
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10 ;; XEmacs is free software: you can redistribute it and/or modify it |
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11 ;; under the terms of the GNU General Public License as published by the |
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12 ;; Free Software Foundation, either version 3 of the License, or (at your |
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13 ;; option) any later version. |
| 428 | 14 |
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15 ;; XEmacs is distributed in the hope that it will be useful, but WITHOUT |
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16 ;; ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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17 ;; FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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18 ;; for more details. |
| 428 | 19 |
| 20 ;; You should have received a copy of the GNU General Public License | |
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21 ;; along with XEmacs. If not, see <http://www.gnu.org/licenses/>. |
| 428 | 22 |
| 23 ;;; Synched up with: Not in FSF. (Completely divergent from FSF scroll-bar.el) | |
| 24 | |
| 25 ;;; Commentary: | |
| 26 | |
| 27 ;; This file is dumped with XEmacs (when scrollbar support is compiled in). | |
| 28 | |
| 29 ;;; Code: | |
| 30 | |
| 31 ;; added for the options menu - dverna | |
| 32 (defcustom scrollbars-visible-p t | |
| 33 "Whether the scrollbars are globally visible. | |
| 34 This variable can be customized through the options menu." | |
| 35 :type 'boolean | |
| 36 :set (lambda (var val) | |
| 37 (set-specifier vertical-scrollbar-visible-p val) | |
| 38 (set-specifier horizontal-scrollbar-visible-p val) | |
| 39 (setq-default scrollbars-visible-p val)) | |
| 40 :group 'display) | |
| 41 | |
| 42 (defun init-scrollbar-from-resources (locale) | |
| 43 (when (and (featurep 'x) | |
| 44 (or (eq locale 'global) | |
| 45 (eq 'x (device-or-frame-type locale)))) | |
| 502 | 46 (declare-fboundp (x-init-scrollbar-from-resources locale))) |
| 428 | 47 (when (and (featurep 'mswindows) |
| 48 (or (eq locale 'global) | |
| 49 (eq 'mswindows (device-or-frame-type locale)))) | |
| 502 | 50 (declare-fboundp (mswindows-init-scrollbar-metrics locale)))) |
| 428 | 51 |
| 52 ;; | |
| 53 ;; vertical scrollbar functions | |
| 54 ;; | |
| 55 | |
| 440 | 56 ;;; #### Move functions from C into Lisp here! |
| 428 | 57 |
| 58 ;; | |
| 59 ;; horizontal scrollbar functions | |
| 60 ;; | |
| 61 | |
| 62 (defun scrollbar-char-left (window) | |
| 63 "Function called when the char-left arrow on the scrollbar is clicked. | |
| 64 This is the little arrow to the left of the scrollbar. One argument is | |
| 65 passed, the scrollbar's window. You can advise this function to | |
| 66 change the scrollbar behavior." | |
| 67 (when (window-live-p window) | |
| 68 (scrollbar-set-hscroll window (- (window-hscroll window) 1)) | |
| 69 (setq zmacs-region-stays t) | |
| 70 nil)) | |
| 71 | |
| 72 (defun scrollbar-char-right (window) | |
| 73 "Function called when the char-right arrow on the scrollbar is clicked. | |
| 74 This is the little arrow to the right of the scrollbar. One argument is | |
| 75 passed, the scrollbar's window. You can advise this function to | |
| 76 change the scrollbar behavior." | |
| 77 (when (window-live-p window) | |
| 78 (scrollbar-set-hscroll window (+ (window-hscroll window) 1)) | |
| 79 (setq zmacs-region-stays t) | |
| 80 nil)) | |
| 81 | |
| 82 (defun scrollbar-page-left (window) | |
| 83 "Function called when the user gives the \"page-left\" scrollbar action. | |
| 84 \(The way this is done can vary from scrollbar to scrollbar.\) One argument is | |
| 85 passed, the scrollbar's window. You can advise this function to | |
| 86 change the scrollbar behavior." | |
| 87 (when (window-live-p window) | |
| 88 (scrollbar-set-hscroll window (- (window-hscroll window) | |
| 89 (- (window-width window) 2))) | |
| 90 (setq zmacs-region-stays t) | |
| 91 nil)) | |
| 92 | |
| 93 (defun scrollbar-page-right (window) | |
| 94 "Function called when the user gives the \"page-right\" scrollbar action. | |
| 95 \(The way this is done can vary from scrollbar to scrollbar.\) One argument is | |
| 96 passed, the scrollbar's window. You can advise this function to | |
| 97 change the scrollbar behavior." | |
| 98 (when (window-live-p window) | |
| 99 (scrollbar-set-hscroll window (+ (window-hscroll window) | |
| 100 (- (window-width window) 2))) | |
| 101 (setq zmacs-region-stays t) | |
| 102 nil)) | |
| 103 | |
| 104 (defun scrollbar-to-left (window) | |
| 105 "Function called when the user gives the \"to-left\" scrollbar action. | |
| 106 \(The way this is done can vary from scrollbar to scrollbar.\). One argument is | |
| 107 passed, the scrollbar's window. You can advise this function to | |
| 108 change the scrollbar behavior." | |
| 109 (when (window-live-p window) | |
| 110 (scrollbar-set-hscroll window 0) | |
| 111 (setq zmacs-region-stays t) | |
| 112 nil)) | |
| 113 | |
| 114 (defun scrollbar-to-right (window) | |
| 115 "Function called when the user gives the \"to-right\" scrollbar action. | |
| 116 \(The way this is done can vary from scrollbar to scrollbar.\). One argument is | |
| 117 passed, the scrollbar's window. You can advise this function to | |
| 118 change the scrollbar behavior." | |
| 119 (when (window-live-p window) | |
| 120 (scrollbar-set-hscroll window 'max) | |
| 121 (setq zmacs-region-stays t) | |
| 122 nil)) | |
| 123 | |
| 124 (defun scrollbar-horizontal-drag (data) | |
| 125 "Function called when the user drags the horizontal scrollbar thumb. | |
| 126 One argument is passed, a cons containing the scrollbar's window and a value | |
| 127 representing how many columns the thumb is slid over. You can advise | |
| 128 this function to change the scrollbar behavior." | |
| 129 (let ((window (car data)) | |
| 130 (value (cdr data))) | |
| 131 (when (and (window-live-p window) (integerp value)) | |
| 132 (scrollbar-set-hscroll window value) | |
| 133 (setq zmacs-region-stays t) | |
| 134 nil))) | |
| 135 | |
| 136 ;;; scrollbar.el ends here |