summaryrefslogtreecommitdiff
path: root/lisp/obsolete/lucid.el
blob: 2c6efa408ffc3ae036349f0e1f6d43c995f2c07d (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
;;; lucid.el --- emulate some Lucid Emacs functions

;; Copyright (C) 1993, 1995, 2001-2014 Free Software Foundation, Inc.

;; Maintainer: emacs-devel@gnu.org
;; Keywords: emulations
;; Obsolete-since: 23.2

;; This file is part of GNU Emacs.

;; GNU Emacs is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.

;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;; GNU General Public License for more details.

;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.

;;; Commentary:

;;; Code:

;; XEmacs autoloads CL so we might as well make use of it.
(require 'cl)

(defalias 'current-time-seconds 'current-time)

(defun real-path-name (name &optional default)
  (file-truename (expand-file-name name default)))

;; It's not clear what to return if the mouse is not in FRAME.
(defun read-mouse-position (frame)
  (let ((pos (mouse-position)))
    (if (eq (car pos) frame)
	(cdr pos))))

(defun switch-to-other-buffer (arg)
  "Switch to the previous buffer.
With a numeric arg N, switch to the Nth most recent buffer.
With an arg of 0, buries the current buffer at the
bottom of the buffer stack."
  (interactive "p")
  (if (eq arg 0)
      (bury-buffer (current-buffer)))
  (switch-to-buffer
   (if (<= arg 1) (other-buffer (current-buffer))
     (nth arg
	  (apply 'nconc
		 (mapcar
		  (lambda (buf)
		    (if (= ?\  (string-to-char (buffer-name buf)))
			nil
		      (list buf)))
		  (buffer-list)))))))

(defun device-class (&optional device)
  "Return the class (color behavior) of DEVICE.
This will be one of 'color, 'grayscale, or 'mono.
This function exists for compatibility with XEmacs."
  (cond
   ((display-color-p device) 'color)
   ((display-grayscale-p device) 'grayscale)
   (t 'mono)))

(defalias 'find-face 'facep)
(defalias 'get-face 'facep)
;; internal-try-face-font was removed from faces.el in rev 1.139, 1999/07/21.
;;;(defalias 'try-face-font 'internal-try-face-font)

(defalias 'exec-to-string 'shell-command-to-string)


;; Buffer context

(defun buffer-syntactic-context (&optional buffer)
  "Syntactic context at point in BUFFER.
Either of `string', `comment' or nil.
This is an XEmacs compatibility function."
  (with-current-buffer (or buffer (current-buffer))
    (let ((state (syntax-ppss (point))))
      (cond
       ((nth 3 state) 'string)
       ((nth 4 state) 'comment)))))


(defun buffer-syntactic-context-depth (&optional buffer)
  "Syntactic parenthesis depth at point in BUFFER.
This is an XEmacs compatibility function."
  (with-current-buffer (or buffer (current-buffer))
    (nth 0 (syntax-ppss (point)))))


;; Extents
(defun make-extent (beg end &optional buffer)
  (make-overlay beg end buffer))

(defun extent-properties (extent) (overlay-properties extent))
(unless (fboundp 'extent-property) (defalias 'extent-property 'overlay-get))

(defun extent-at (pos &optional object property before)
  (with-current-buffer (or object (current-buffer))
    (let ((overlays (overlays-at pos 'sorted)))
      (when property
	(let (filtered)
	  (while overlays
	    (if (overlay-get (car overlays) property)
		(setq filtered (cons (car overlays) filtered)))
	    (setq overlays (cdr overlays)))
	  (setq overlays filtered)))
      (if before
	  (nth 1 (memq before overlays))
	(car overlays)))))

(defun set-extent-property (extent prop value)
  ;; Make sure that separate adjacent extents
  ;; with the same mouse-face value
  ;; do not run together as one extent.
  (and (eq prop 'mouse-face)
       (symbolp value)
       (setq value (list value)))
  (if (eq prop 'duplicable)
      (cond ((and value (not (overlay-get extent prop)))
	     ;; If becoming duplicable, copy all overlayprops to text props.
	     (add-text-properties (overlay-start extent)
				  (overlay-end extent)
				  (overlay-properties extent)
				  (overlay-buffer extent)))
	    ;; If becoming no longer duplicable, remove these text props.
	    ((and (not value) (overlay-get extent prop))
	     (remove-text-properties (overlay-start extent)
				     (overlay-end extent)
				     (overlay-properties extent)
				     (overlay-buffer extent))))
    ;; If extent is already duplicable, put this property
    ;; on the text as well as on the overlay.
    (if (overlay-get extent 'duplicable)
	(put-text-property  (overlay-start extent)
			    (overlay-end extent)
			    prop value (overlay-buffer extent))))
  (overlay-put extent prop value))

(defun set-extent-face (extent face)
  (set-extent-property extent 'face face))

(defun set-extent-end-glyph (extent glyph)
  (set-extent-property extent 'after-string glyph))

(defun delete-extent (extent)
  (set-extent-property extent 'duplicable nil)
  (delete-overlay extent))

;; Support the Lucid names with `screen' instead of `frame'.

(defalias 'current-screen-configuration 'current-frame-configuration)
(defalias 'delete-screen 'delete-frame)
(defalias 'find-file-new-screen 'find-file-other-frame)
(defalias 'find-file-read-only-new-screen 'find-file-read-only-other-frame)
(defalias 'find-tag-new-screen 'find-tag-other-frame)
;;(defalias 'focus-screen 'focus-frame)
(defalias 'iconify-screen 'iconify-frame)
(defalias 'mail-new-screen 'mail-other-frame)
(defalias 'make-screen-invisible 'make-frame-invisible)
(defalias 'make-screen-visible 'make-frame-visible)
;; (defalias 'minibuffer-screen-list 'minibuffer-frame-list)
(defalias 'modify-screen-parameters 'modify-frame-parameters)
(defalias 'next-screen 'next-frame)
;; (defalias 'next-multiscreen-window 'next-multiframe-window)
;; (defalias 'previous-multiscreen-window 'previous-multiframe-window)
;; (defalias 'redirect-screen-focus 'redirect-frame-focus)
(defalias 'redraw-screen 'redraw-frame)
;; (defalias 'screen-char-height 'frame-char-height)
;; (defalias 'screen-char-width 'frame-char-width)
;; (defalias 'screen-configuration-to-register 'frame-configuration-to-register)
;; (defalias 'screen-focus 'frame-focus)
(defalias 'screen-list 'frame-list)
;; (defalias 'screen-live-p 'frame-live-p)
(defalias 'screen-parameters 'frame-parameters)
(defalias 'screen-pixel-height 'frame-pixel-height)
(defalias 'screen-pixel-width 'frame-pixel-width)
(defalias 'screen-root-window 'frame-root-window)
(defalias 'screen-selected-window 'frame-selected-window)
(defalias 'lower-screen 'lower-frame)
(defalias 'raise-screen 'raise-frame)
(defalias 'screen-visible-p 'frame-visible-p)
(defalias 'screenp 'framep)
(defalias 'select-screen 'select-frame)
(defalias 'selected-screen 'selected-frame)
;; (defalias 'set-screen-configuration 'set-frame-configuration)
;; (defalias 'set-screen-height 'set-frame-height)
(defalias 'set-screen-position 'set-frame-position)
(defalias 'set-screen-size 'set-frame-size)
;; (defalias 'set-screen-width 'set-frame-width)
(defalias 'switch-to-buffer-new-screen 'switch-to-buffer-other-frame)
;; (defalias 'unfocus-screen 'unfocus-frame)
(defalias 'visible-screen-list 'visible-frame-list)
(defalias 'window-screen 'window-frame)
(defalias 'x-create-screen 'x-create-frame)
(defalias 'x-new-screen 'make-frame)

(provide 'lucid)

;; Local Variables:
;; byte-compile-warnings: (not cl-functions)
;; End:

;;; lucid.el ends here