|
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
|
|
|
10 ;; XEmacs is free software; you can redistribute it and/or modify it
|
|
|
11 ;; under the terms of the GNU General Public License as published by
|
|
|
12 ;; the Free Software Foundation; either version 2, or (at your option)
|
|
|
13 ;; any later version.
|
|
|
14
|
|
|
15 ;; XEmacs is distributed in the hope that it will be useful, but
|
|
|
16 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
|
18 ;; General Public License for more details.
|
|
|
19
|
|
|
20 ;; You should have received a copy of the GNU General Public License
|
|
|
21 ;; along with XEmacs; see the file COPYING. If not, write to the
|
|
|
22 ;; Free Software Foundation, 59 Temple Place - Suite 330,
|
|
|
23 ;; Boston, MA 02111-1307, USA.
|
|
|
24
|
|
|
25 ;;; Synched up with: Not in FSF. (Completely divergent from FSF scroll-bar.el)
|
|
|
26
|
|
|
27 ;;; Commentary:
|
|
|
28
|
|
|
29 ;; This file is dumped with XEmacs (when scrollbar support is compiled in).
|
|
|
30
|
|
|
31 ;;; Code:
|
|
|
32
|
|
|
33 ;; added for the options menu - dverna
|
|
|
34 (defcustom scrollbars-visible-p t
|
|
|
35 "Whether the scrollbars are globally visible.
|
|
|
36 This variable can be customized through the options menu."
|
|
|
37 :type 'boolean
|
|
|
38 :set (lambda (var val)
|
|
|
39 (set-specifier vertical-scrollbar-visible-p val)
|
|
|
40 (set-specifier horizontal-scrollbar-visible-p val)
|
|
|
41 (setq-default scrollbars-visible-p val))
|
|
|
42 :group 'display)
|
|
|
43
|
|
|
44 (defun init-scrollbar-from-resources (locale)
|
|
|
45 (when (and (featurep 'x)
|
|
|
46 (or (eq locale 'global)
|
|
|
47 (eq 'x (device-or-frame-type locale))))
|
|
502
|
48 (declare-fboundp (x-init-scrollbar-from-resources locale)))
|
|
428
|
49 (when (and (featurep 'mswindows)
|
|
|
50 (or (eq locale 'global)
|
|
|
51 (eq 'mswindows (device-or-frame-type locale))))
|
|
502
|
52 (declare-fboundp (mswindows-init-scrollbar-metrics locale))))
|
|
428
|
53
|
|
|
54 ;;
|
|
|
55 ;; vertical scrollbar functions
|
|
|
56 ;;
|
|
|
57
|
|
440
|
58 ;;; #### Move functions from C into Lisp here!
|
|
428
|
59
|
|
|
60 ;;
|
|
|
61 ;; horizontal scrollbar functions
|
|
|
62 ;;
|
|
|
63
|
|
|
64 (defun scrollbar-char-left (window)
|
|
|
65 "Function called when the char-left arrow on the scrollbar is clicked.
|
|
|
66 This is the little arrow to the left of the scrollbar. One argument is
|
|
|
67 passed, the scrollbar's window. You can advise this function to
|
|
|
68 change the scrollbar behavior."
|
|
|
69 (when (window-live-p window)
|
|
|
70 (scrollbar-set-hscroll window (- (window-hscroll window) 1))
|
|
|
71 (setq zmacs-region-stays t)
|
|
|
72 nil))
|
|
|
73
|
|
|
74 (defun scrollbar-char-right (window)
|
|
|
75 "Function called when the char-right arrow on the scrollbar is clicked.
|
|
|
76 This is the little arrow to the right of the scrollbar. One argument is
|
|
|
77 passed, the scrollbar's window. You can advise this function to
|
|
|
78 change the scrollbar behavior."
|
|
|
79 (when (window-live-p window)
|
|
|
80 (scrollbar-set-hscroll window (+ (window-hscroll window) 1))
|
|
|
81 (setq zmacs-region-stays t)
|
|
|
82 nil))
|
|
|
83
|
|
|
84 (defun scrollbar-page-left (window)
|
|
|
85 "Function called when the user gives the \"page-left\" scrollbar action.
|
|
|
86 \(The way this is done can vary from scrollbar to scrollbar.\) One argument is
|
|
|
87 passed, the scrollbar's window. You can advise this function to
|
|
|
88 change the scrollbar behavior."
|
|
|
89 (when (window-live-p window)
|
|
|
90 (scrollbar-set-hscroll window (- (window-hscroll window)
|
|
|
91 (- (window-width window) 2)))
|
|
|
92 (setq zmacs-region-stays t)
|
|
|
93 nil))
|
|
|
94
|
|
|
95 (defun scrollbar-page-right (window)
|
|
|
96 "Function called when the user gives the \"page-right\" scrollbar action.
|
|
|
97 \(The way this is done can vary from scrollbar to scrollbar.\) One argument is
|
|
|
98 passed, the scrollbar's window. You can advise this function to
|
|
|
99 change the scrollbar behavior."
|
|
|
100 (when (window-live-p window)
|
|
|
101 (scrollbar-set-hscroll window (+ (window-hscroll window)
|
|
|
102 (- (window-width window) 2)))
|
|
|
103 (setq zmacs-region-stays t)
|
|
|
104 nil))
|
|
|
105
|
|
|
106 (defun scrollbar-to-left (window)
|
|
|
107 "Function called when the user gives the \"to-left\" scrollbar action.
|
|
|
108 \(The way this is done can vary from scrollbar to scrollbar.\). One argument is
|
|
|
109 passed, the scrollbar's window. You can advise this function to
|
|
|
110 change the scrollbar behavior."
|
|
|
111 (when (window-live-p window)
|
|
|
112 (scrollbar-set-hscroll window 0)
|
|
|
113 (setq zmacs-region-stays t)
|
|
|
114 nil))
|
|
|
115
|
|
|
116 (defun scrollbar-to-right (window)
|
|
|
117 "Function called when the user gives the \"to-right\" scrollbar action.
|
|
|
118 \(The way this is done can vary from scrollbar to scrollbar.\). One argument is
|
|
|
119 passed, the scrollbar's window. You can advise this function to
|
|
|
120 change the scrollbar behavior."
|
|
|
121 (when (window-live-p window)
|
|
|
122 (scrollbar-set-hscroll window 'max)
|
|
|
123 (setq zmacs-region-stays t)
|
|
|
124 nil))
|
|
|
125
|
|
|
126 (defun scrollbar-horizontal-drag (data)
|
|
|
127 "Function called when the user drags the horizontal scrollbar thumb.
|
|
|
128 One argument is passed, a cons containing the scrollbar's window and a value
|
|
|
129 representing how many columns the thumb is slid over. You can advise
|
|
|
130 this function to change the scrollbar behavior."
|
|
|
131 (let ((window (car data))
|
|
|
132 (value (cdr data)))
|
|
|
133 (when (and (window-live-p window) (integerp value))
|
|
|
134 (scrollbar-set-hscroll window value)
|
|
|
135 (setq zmacs-region-stays t)
|
|
|
136 nil)))
|
|
|
137
|
|
|
138 ;;; scrollbar.el ends here
|
