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[xemacs-hg @ 2002-03-13 08:51:24 by ben] The big ben-mule-21-5 check-in! Various files were added and deleted. See CHANGES-ben-mule. There are still some test suite failures. No crashes, though. Many of the failures have to do with problems in the test suite itself rather than in the actual code. I'll be addressing these in the next day or so -- none of the test suite failures are at all critical. Meanwhile I'll be trying to address the biggest issues -- i.e. build or run failures, which will almost certainly happen on various platforms. All comments should be sent to ben@xemacs.org -- use a Cc: if necessary when sending to mailing lists. There will be pre- and post- tags, something like pre-ben-mule-21-5-merge-in, and post-ben-mule-21-5-merge-in.
author ben
date Wed, 13 Mar 2002 08:54:06 +0000
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children d682c0f82a71
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770:336a418893b5 771:943eaba38521
1 ;;; resize-minibuffer.el --- dynamically resize minibuffer to display entire contents
2
3 ;; Copyright (C) 1990 Roland McGrath
4 ;; Copyright (C) 1993, 1994 Noah S. Friedman
5
6 ;; Author: Noah Friedman <friedman@prep.ai.mit.edu>
7 ;; Author: Roland McGrath <roland@prep.ai.mit.edu>
8 ;; Modified for Lucid Emacs By: Peter Stout <pds@cs.cmu.edu>
9 ;; Maintainer: friedman@prep.ai.mit.edu
10 ;; Keywords: minibuffer, window, frames, display
11
12 ;; This file is part of XEmacs.
13
14 ;; XEmacs is free software; you can redistribute it and/or modify it
15 ;; under the terms of the GNU General Public License as published by
16 ;; the Free Software Foundation; either version 2, or (at your option)
17 ;; any later version.
18
19 ;; XEmacs is distributed in the hope that it will be useful, but
20 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
21 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
22 ;; General Public License for more details.
23
24 ;; You should have received a copy of the GNU General Public License
25 ;; along with XEmacs; see the file COPYING. If not, you can either
26 ;; send email to this program's maintainer or write to: The Free
27 ;; Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
28 ;; 02111-1307, USA.
29
30 ;;; Synched up with: Not synched. Copied from rsz-minibuf.el to
31 ;;; resize-minibuffer.el to avoid current problems where, when there's a
32 ;;; file in dump and a file with the same name in packages, a dumping
33 ;;; XEmacs will find the wrong one!
34
35 ;;; Commentary:
36
37 ;; This file has received maintenance by the XEmacs development team.
38
39 ;; $Id: resize-minibuffer.el,v 1.2 2002/03/13 08:52:08 ben Exp $
40
41 ;; This package allows the entire contents (or as much as possible) of the
42 ;; minibuffer to be visible at once when typing. As the end of a line is
43 ;; reached, the minibuffer will resize itself. When the user is done
44 ;; typing, the minibuffer will return to its original size.
45
46 ;; In window systems where it is possible to have a frame in which the
47 ;; minibuffer is the only window, the frame itself can be resized. In FSF
48 ;; GNU Emacs 19.22 and earlier, the frame may not be properly returned to
49 ;; its original size after it ceases to be active because
50 ;; `minibuffer-exit-hook' didn't exist until version 19.23.
51
52 ;; NOTE: The code to resize frames has not been tested under Lucid Emacs,
53 ;; because detached minibuffers are broken.
54
55 ;; Note that the minibuffer and echo area are not the same! They simply
56 ;; happen to occupy roughly the same place on the frame. Messages put in
57 ;; the echo area will not cause any resizing by this package.
58
59 ;; This package is considered a minor mode but it doesn't put anything in
60 ;; minor-mode-alist because this mode is specific to the minibuffer, which
61 ;; has no modeline.
62
63 ;; To use this package, put the following in your .emacs:
64 ;;
65 ;; (autoload 'resize-minibuffer-mode "rsz-minibuf" nil t)
66 ;;
67 ;; Invoking the command `resize-minibuffer-mode' will then enable this mode.
68
69 ;;; Code:
70
71
72
73 (defgroup resize-minibuffer nil
74 "Dynamically resize minibuffer to display entire contents"
75 :group 'frames)
76
77
78 (defcustom resize-minibuffer-mode nil
79 "*If non-`nil', resize the minibuffer so its entire contents are visible."
80 :type 'boolean
81 :require 'rsz-minibuf
82 :group 'resize-minibuffer)
83
84 (defcustom resize-minibuffer-window-max-height nil
85 "*Maximum size the minibuffer window is allowed to become.
86 If less than 1 or not a number, the limit is the height of the frame in
87 which the active minibuffer window resides."
88 :type '(choice (const nil) integer)
89 :group 'resize-minibuffer)
90
91 (defcustom resize-minibuffer-window-exactly t
92 "*If non-`nil', make minibuffer exactly the size needed to display all its contents.
93 Otherwise, the minibuffer window can temporarily increase in size but
94 never get smaller while it is active."
95 :type 'boolean
96 :group 'resize-minibuffer)
97
98
99 (defcustom resize-minibuffer-frame nil
100 "*If non-`nil' and the active minibuffer is the sole window in its frame, allow changing the frame height."
101 :type 'boolean
102 :group 'resize-minibuffer)
103
104 (defcustom resize-minibuffer-frame-max-height nil
105 "*Maximum size the minibuffer frame is allowed to become.
106 If less than 1 or not a number, there is no limit.")
107
108 (defcustom resize-minibuffer-frame-exactly nil
109 "*If non-`nil', make minibuffer frame exactly the size needed to display all its contents.
110 Otherwise, the minibuffer frame can temporarily increase in size but
111 never get smaller while it is active."
112 :type 'boolean
113 :group 'resize-minibuffer)
114
115
116 ;;;###autoload
117 (defun resize-minibuffer-mode (&optional prefix)
118 "Enable or disable resize-minibuffer mode.
119 A negative prefix argument disables this mode. A positive argument or
120 argument of 0 enables it.
121
122 When this minor mode is enabled, the minibuffer is dynamically resized to
123 contain the entire region of text put in it as you type.
124
125 The variable `resize-minibuffer-mode' is set to t or nil depending on
126 whether this mode is active or not.
127
128 The maximum height to which the minibuffer can grow is controlled by the
129 variable `resize-minibuffer-window-max-height'.
130
131 The variable `resize-minibuffer-window-exactly' determines whether the
132 minibuffer window should ever be shrunk to make it no larger than needed to
133 display its contents.
134
135 When using a window system, it is possible for a minibuffer to be the sole
136 window in a frame. Since that window is already its maximum size, the only
137 way to make more text visible at once is to increase the size of the frame.
138 The variable `resize-minibuffer-frame' controls whether this should be
139 done. The variables `resize-minibuffer-frame-max-height' and
140 `resize-minibuffer-frame-exactly' are analogous to their window
141 counterparts."
142 (interactive "p")
143 (or prefix (setq prefix 0))
144 (cond
145 ((>= prefix 0)
146 (setq resize-minibuffer-mode t))
147 (t
148 (setq resize-minibuffer-mode nil))))
149
150 (defun resize-minibuffer-setup ()
151 (cond
152 (resize-minibuffer-mode
153 (cond
154 ((and (not (eq 'tty (console-type)))
155 (eq 'only (plist-get (frame-properties) 'minibuffer)))
156 (and resize-minibuffer-frame
157 (progn
158 (make-local-hook 'minibuffer-exit-hook)
159 (add-hook 'minibuffer-exit-hook 'resize-minibuffer-frame-restore
160 nil t)
161 (make-local-hook 'post-command-hook)
162 (add-hook 'post-command-hook 'resize-minibuffer-frame nil t)
163 (unless (and (boundp 'icomplete-mode)
164 icomplete-mode)
165 (resize-minibuffer-frame)))))
166 (t
167 (make-local-hook 'post-command-hook)
168 (add-hook 'post-command-hook 'resize-minibuffer-window nil t)
169 (unless (and (boundp 'icomplete-mode)
170 icomplete-mode)
171 (resize-minibuffer-window)))))))
172
173 (defun resize-minibuffer-count-window-lines (&optional start end)
174 "Return number of window lines occupied by text in region.
175 The number of window lines may be greater than the number of actual lines
176 in the buffer if any wrap on the display due to their length.
177
178 Optional arguments START and END default to point-min and point-max,
179 respectively."
180 (or start (setq start (point-min)))
181 (or end (setq end (point-max)))
182 (if (= start end)
183 0
184 (save-excursion
185 (save-restriction
186 (widen)
187 (narrow-to-region start end)
188 (goto-char start)
189 (vertical-motion (buffer-size))))))
190
191
192 ;; Resize the minibuffer window to contain the minibuffer's contents.
193 ;; The minibuffer must be the current window.
194 (defun resize-minibuffer-window ()
195 (let ((height (window-height))
196 (lines (1+ (resize-minibuffer-count-window-lines))))
197 (and (numberp resize-minibuffer-window-max-height)
198 (> resize-minibuffer-window-max-height 0)
199 (setq lines (min
200 lines
201 resize-minibuffer-window-max-height)))
202 (or (if resize-minibuffer-window-exactly
203 (= lines height)
204 (<= lines height))
205 (enlarge-window (- lines height)))))
206
207
208 ;; Resize the minibuffer frame to contain the minibuffer's contents.
209 ;; The minibuffer frame must be the current frame.
210 (defun resize-minibuffer-frame ()
211 (let ((height (frame-height))
212 (lines (1+ (resize-minibuffer-count-window-lines))))
213 (and (numberp resize-minibuffer-frame-max-height)
214 (> resize-minibuffer-frame-max-height 0)
215 (setq lines (min
216 lines
217 resize-minibuffer-frame-max-height)))
218 (cond
219 ((> lines height)
220 (set-frame-size (selected-frame) (frame-width) lines))
221 ((and resize-minibuffer-frame-exactly
222 (> height (plist-get minibuffer-frame-plist 'height))
223 (< lines height))
224 (set-frame-size (selected-frame) (frame-width) lines)))))
225
226 ;; Restore the original height of the frame.
227 (defun resize-minibuffer-frame-restore ()
228 (set-frame-size (selected-frame) (frame-width)
229 (plist-get minibuffer-frame-plist 'height)))
230
231
232 (provide 'rsz-minibuf)
233
234 (add-hook 'minibuffer-setup-hook 'resize-minibuffer-setup)
235
236 ;;; rsz-minibuf.el ends here