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dc6d9681 | 1 | ;;; frame.el --- multi-frame management independent of window systems. |
c88ab9ce | 2 | |
7565ee93 | 3 | ;; Copyright (C) 1993, 1994, 1996, 1997, 2000 Free Software Foundation, Inc. |
3a801d0c | 4 | |
fc68affa | 5 | ;; Maintainer: FSF |
fd7fa35a | 6 | ;; Keywords: internal |
fc68affa | 7 | |
b578f267 EN |
8 | ;; This file is part of GNU Emacs. |
9 | ||
10 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
11 | ;; it 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 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
16 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | ;; GNU General Public License for more details. | |
19 | ||
20 | ;; You should have received a copy of the GNU General Public License | |
21 | ;; along with GNU Emacs; see the file COPYING. If not, write to the | |
22 | ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
23 | ;; Boston, MA 02111-1307, USA. | |
64c669bc | 24 | |
fc68affa ER |
25 | ;;; Code: |
26 | ||
dc6d9681 JB |
27 | (defvar frame-creation-function nil |
28 | "Window-system dependent function to call to create a new frame. | |
29 | The window system startup file should set this to its frame creation | |
64c669bc JB |
30 | function, which should take an alist of parameters as its argument.") |
31 | ||
216f1169 RS |
32 | ;;; The initial value given here for used to ask for a minibuffer. |
33 | ;;; But that's not necessary, because the default is to have one. | |
34 | ;;; By not specifying it here, we let an X resource specify it. | |
0c966f88 | 35 | (defcustom initial-frame-alist nil |
0b9d32af | 36 | "*Alist of frame parameters for creating the initial X window frame. |
eaa974e1 | 37 | You can set this in your `.emacs' file; for example, |
dc6d9681 | 38 | (setq initial-frame-alist '((top . 1) (left . 1) (width . 80) (height . 55))) |
de17da15 RS |
39 | Parameters specified here supersede the values given in `default-frame-alist'. |
40 | ||
41 | If the value calls for a frame without a minibuffer, and you have not created | |
42 | a minibuffer frame on your own, one is created according to | |
7eadab74 | 43 | `minibuffer-frame-alist'. |
de17da15 RS |
44 | |
45 | You can specify geometry-related options for just the initial frame | |
46 | by setting this variable in your `.emacs' file; however, they won't | |
85557d7e | 47 | take effect until Emacs reads `.emacs', which happens after first creating |
de17da15 RS |
48 | the frame. If you want the frame to have the proper geometry as soon |
49 | as it appears, you need to use this three-step process: | |
50 | * Specify X resources to give the geometry you want. | |
51 | * Set `default-frame-alist' to override these options so that they | |
52 | don't affect subsequent frames. | |
53 | * Set `initial-frame-alist' in a way that matches the X resources, | |
0c966f88 RS |
54 | to override what you put in `default-frame-alist'." |
55 | :type '(repeat (cons :format "%v" | |
56 | (symbol :tag "Parameter") | |
57 | (sexp :tag "Value"))) | |
58 | :group 'frames) | |
64c669bc | 59 | |
0b9d32af RS |
60 | (defcustom minibuffer-frame-alist '((width . 80) (height . 2)) |
61 | "*Alist of frame parameters for initially creating a minibuffer frame. | |
eaa974e1 | 62 | You can set this in your `.emacs' file; for example, |
dc6d9681 | 63 | (setq minibuffer-frame-alist |
7eadab74 | 64 | '((top . 1) (left . 1) (width . 80) (height . 2))) |
eaa974e1 | 65 | Parameters specified here supersede the values given in |
0b9d32af RS |
66 | `default-frame-alist', for a minibuffer frame." |
67 | :type '(repeat (cons :format "%v" | |
68 | (symbol :tag "Parameter") | |
69 | (sexp :tag "Value"))) | |
70 | :group 'frames) | |
64c669bc | 71 | |
0b9d32af RS |
72 | (defcustom pop-up-frame-alist nil |
73 | "*Alist of frame parameters used when creating pop-up frames. | |
dc6d9681 | 74 | Pop-up frames are used for completions, help, and the like. |
64c669bc | 75 | This variable can be set in your init file, like this: |
dc6d9681 | 76 | (setq pop-up-frame-alist '((width . 80) (height . 20))) |
0b9d32af RS |
77 | These supersede the values given in `default-frame-alist', |
78 | for pop-up frames." | |
79 | :type '(repeat (cons :format "%v" | |
80 | (symbol :tag "Parameter") | |
81 | (sexp :tag "Value"))) | |
82 | :group 'frames) | |
64c669bc | 83 | |
dc6d9681 | 84 | (setq pop-up-frame-function |
64c669bc | 85 | (function (lambda () |
6eb018ba | 86 | (make-frame pop-up-frame-alist)))) |
64c669bc | 87 | |
30e19aee | 88 | (defcustom special-display-frame-alist |
8a9e86e6 RS |
89 | '((height . 14) (width . 80) (unsplittable . t)) |
90 | "*Alist of frame parameters used when creating special frames. | |
91 | Special frames are used for buffers whose names are in | |
92 | `special-display-buffer-names' and for buffers whose names match | |
93 | one of the regular expressions in `special-display-regexps'. | |
94 | This variable can be set in your init file, like this: | |
95 | (setq special-display-frame-alist '((width . 80) (height . 20))) | |
30e19aee RS |
96 | These supersede the values given in `default-frame-alist'." |
97 | :type '(repeat (cons :format "%v" | |
98 | (symbol :tag "Parameter") | |
99 | (sexp :tag "Value"))) | |
100 | :group 'frames) | |
8a9e86e6 | 101 | |
95e6cf39 | 102 | (defun special-display-popup-frame (buffer &optional args) |
40d34803 DL |
103 | "Display BUFFER in its own frame, reusing an existing window if any. |
104 | Return the window chosen. | |
105 | Currently we do not insist on selecting the window within its frame. | |
106 | If ARGS is an alist, use it as a list of frame parameter specs. | |
107 | If ARGS is a list whose car is a symbol, | |
108 | use (car ARGS) as a function to do the work. | |
109 | Pass it BUFFER as first arg, and (cdr ARGS) gives the rest of the args." | |
95e6cf39 RS |
110 | (if (and args (symbolp (car args))) |
111 | (apply (car args) buffer (cdr args)) | |
112 | (let ((window (get-buffer-window buffer t))) | |
113 | (if window | |
114 | ;; If we have a window already, make it visible. | |
115 | (let ((frame (window-frame window))) | |
116 | (make-frame-visible frame) | |
117 | (raise-frame frame) | |
118 | window) | |
119 | ;; If no window yet, make one in a new frame. | |
120 | (let ((frame (make-frame (append args special-display-frame-alist)))) | |
121 | (set-window-buffer (frame-selected-window frame) buffer) | |
122 | (set-window-dedicated-p (frame-selected-window frame) t) | |
123 | (frame-selected-window frame)))))) | |
8a9e86e6 | 124 | |
924be53a | 125 | (defun handle-delete-frame (event) |
40d34803 | 126 | "Handle delete-frame events from the X server." |
924be53a RS |
127 | (interactive "e") |
128 | (let ((frame (posn-window (event-start event))) | |
129 | (i 0) | |
130 | (tail (frame-list))) | |
131 | (while tail | |
132 | (and (frame-visible-p (car tail)) | |
133 | (not (eq (car tail) frame)) | |
134 | (setq i (1+ i))) | |
135 | (setq tail (cdr tail))) | |
136 | (if (> i 0) | |
137 | (delete-frame frame t) | |
a9562d19 RS |
138 | ;; Gildea@x.org says it is ok to ask questions before terminating. |
139 | (save-buffers-kill-emacs)))) | |
64c669bc | 140 | \f |
dc6d9681 | 141 | ;;;; Arrangement of frames at startup |
64c669bc JB |
142 | |
143 | ;;; 1) Load the window system startup file from the lisp library and read the | |
144 | ;;; high-priority arguments (-q and the like). The window system startup | |
dc6d9681 | 145 | ;;; file should create any frames specified in the window system defaults. |
85557d7e | 146 | ;;; |
dc6d9681 | 147 | ;;; 2) If no frames have been opened, we open an initial text frame. |
64c669bc JB |
148 | ;;; |
149 | ;;; 3) Once the init file is done, we apply any newly set parameters | |
dc6d9681 | 150 | ;;; in initial-frame-alist to the frame. |
64c669bc | 151 | |
85557d7e | 152 | ;; These are now called explicitly at the proper times, |
fc4d4afb RS |
153 | ;; since that is easier to understand. |
154 | ;; Actually using hooks within Emacs is bad for future maintenance. --rms. | |
155 | ;; (add-hook 'before-init-hook 'frame-initialize) | |
156 | ;; (add-hook 'window-setup-hook 'frame-notice-user-settings) | |
64c669bc | 157 | |
dc6d9681 JB |
158 | ;;; If we create the initial frame, this is it. |
159 | (defvar frame-initial-frame nil) | |
64c669bc | 160 | |
3f2f8c83 RS |
161 | ;; Record the parameters used in frame-initialize to make the initial frame. |
162 | (defvar frame-initial-frame-alist) | |
163 | ||
791e09d8 RS |
164 | (defvar frame-initial-geometry-arguments nil) |
165 | ||
64c669bc | 166 | ;;; startup.el calls this function before loading the user's init |
dc6d9681 | 167 | ;;; file - if there is no frame with a minibuffer open now, create |
64c669bc | 168 | ;;; one to display messages while loading the init file. |
dc6d9681 | 169 | (defun frame-initialize () |
40d34803 | 170 | "Create an in initial frame if necessary." |
64c669bc | 171 | ;; Are we actually running under a window system at all? |
004f057a | 172 | (if (and window-system (not noninteractive) (not (eq window-system 'pc))) |
7eadab74 | 173 | (progn |
62642af9 RS |
174 | ;; Turn on special-display processing only if there's a window system. |
175 | (setq special-display-function 'special-display-popup-frame) | |
176 | ||
7eadab74 JB |
177 | ;; If there is no frame with a minibuffer besides the terminal |
178 | ;; frame, then we need to create the opening frame. Make sure | |
179 | ;; it has a minibuffer, but let initial-frame-alist omit the | |
180 | ;; minibuffer spec. | |
181 | (or (delq terminal-frame (minibuffer-frame-list)) | |
36fc9c9f | 182 | (progn |
3f2f8c83 | 183 | (setq frame-initial-frame-alist |
071ebee9 | 184 | (append initial-frame-alist default-frame-alist nil)) |
a8bb5882 RS |
185 | (or (assq 'horizontal-scroll-bars frame-initial-frame-alist) |
186 | (setq frame-initial-frame-alist | |
187 | (cons '(horizontal-scroll-bars . t) | |
188 | frame-initial-frame-alist))) | |
36fc9c9f RS |
189 | (setq default-minibuffer-frame |
190 | (setq frame-initial-frame | |
96a84970 | 191 | (make-frame frame-initial-frame-alist))) |
11281034 RS |
192 | ;; Delete any specifications for window geometry parameters |
193 | ;; so that we won't reapply them in frame-notice-user-settings. | |
194 | ;; It would be wrong to reapply them then, | |
195 | ;; because that would override explicit user resizing. | |
58bf6042 | 196 | (setq initial-frame-alist |
c2079f0a | 197 | (frame-remove-geometry-params initial-frame-alist)))) |
85557d7e | 198 | ;; At this point, we know that we have a frame open, so we |
dc6d9681 JB |
199 | ;; can delete the terminal frame. |
200 | (delete-frame terminal-frame) | |
201 | (setq terminal-frame nil)) | |
85557d7e | 202 | |
0759c4d0 KH |
203 | ;; No, we're not running a window system. Use make-terminal-frame if |
204 | ;; we support that feature, otherwise arrange to cause errors. | |
004f057a RS |
205 | (or (eq window-system 'pc) |
206 | (setq frame-creation-function | |
81b99826 GM |
207 | (if (fboundp 'tty-create-frame-with-faces) |
208 | 'tty-create-frame-with-faces | |
004f057a RS |
209 | (function |
210 | (lambda (parameters) | |
211 | (error | |
212 | "Can't create multiple frames without a window system")))))))) | |
85557d7e | 213 | |
8f2a992b GM |
214 | (defvar frame-notice-user-settings t |
215 | "Non-nil means function `frame-notice-user-settings' wasn't run yet.") | |
216 | ||
7eadab74 JB |
217 | ;;; startup.el calls this function after loading the user's init |
218 | ;;; file. Now default-frame-alist and initial-frame-alist contain | |
219 | ;;; information to which we must react; do what needs to be done. | |
dc6d9681 | 220 | (defun frame-notice-user-settings () |
40d34803 DL |
221 | "Act on user's init file settings of frame parameters. |
222 | React to settings of `default-frame-alist', `initial-frame-alist' there." | |
2ffa6186 | 223 | ;; Make menu-bar-mode and default-frame-alist consistent. |
61f2bcd7 GM |
224 | (when (boundp 'menu-bar-mode) |
225 | (let ((default (assq 'menu-bar-lines default-frame-alist))) | |
226 | (if default | |
227 | (setq menu-bar-mode (not (eq (cdr default) 0))) | |
228 | (setq default-frame-alist | |
229 | (cons (cons 'menu-bar-lines (if menu-bar-mode 1 0)) | |
230 | default-frame-alist))))) | |
231 | ||
33a33c06 GM |
232 | ;; Make tool-bar-mode and default-frame-alist consistent. Don't do |
233 | ;; it in batch mode since that would leave a tool-bar-lines | |
234 | ;; parameter in default-frame-alist in a dumped Emacs, which is not | |
235 | ;; what we want. For some reason, menu-bar-mode is not bound | |
236 | ;; in this case, but tool-bar-mode is. | |
237 | (when (and (boundp 'tool-bar-mode) | |
238 | (not noninteractive)) | |
61f2bcd7 GM |
239 | (let ((default (assq 'tool-bar-lines default-frame-alist))) |
240 | (if default | |
241 | (setq tool-bar-mode (not (eq (cdr default) 0))) | |
242 | (setq default-frame-alist | |
243 | (cons (cons 'tool-bar-lines (if tool-bar-mode 1 0)) | |
244 | default-frame-alist))))) | |
2ffa6186 | 245 | |
7eadab74 JB |
246 | ;; Creating and deleting frames may shift the selected frame around, |
247 | ;; and thus the current buffer. Protect against that. We don't | |
248 | ;; want to use save-excursion here, because that may also try to set | |
249 | ;; the buffer of the selected window, which fails when the selected | |
250 | ;; window is the minibuffer. | |
251 | (let ((old-buffer (current-buffer))) | |
252 | ||
8f2a992b GM |
253 | (when (and frame-notice-user-settings |
254 | (null frame-initial-frame)) | |
42002db5 EZ |
255 | ;; This case happens when we don't have a window system, and |
256 | ;; also for MS-DOS frames. | |
8f2a992b GM |
257 | (let ((parms (frame-parameters frame-initial-frame))) |
258 | ;; Don't change the frame names. | |
259 | (setq parms (delq (assq 'name parms) parms)) | |
260 | ;; Can't modify the minibuffer parameter, so don't try. | |
261 | (setq parms (delq (assq 'minibuffer parms) parms)) | |
262 | (modify-frame-parameters nil | |
42002db5 EZ |
263 | (if (null window-system) |
264 | (append initial-frame-alist | |
265 | default-frame-alist | |
266 | parms | |
267 | nil) | |
268 | ;; initial-frame-alist and | |
269 | ;; default-frame-alist were already | |
270 | ;; applied in pc-win.el. | |
271 | parms)) | |
272 | (if (null window-system) ;; MS-DOS does this differently in pc-win.el | |
273 | (let ((newparms (frame-parameters)) | |
274 | (frame (selected-frame))) | |
275 | (tty-handle-reverse-video frame newparms) | |
276 | ;; If we changed the background color, we need to update | |
277 | ;; the background-mode parameter, and maybe some faces, | |
278 | ;; too. | |
279 | (when (assq 'background-color newparms) | |
280 | (unless (or (assq 'background-mode initial-frame-alist) | |
281 | (assq 'background-mode default-frame-alist)) | |
282 | (frame-set-background-mode frame)) | |
283 | (face-set-after-frame-default frame)))))) | |
8f2a992b | 284 | |
7eadab74 JB |
285 | ;; If the initial frame is still around, apply initial-frame-alist |
286 | ;; and default-frame-alist to it. | |
287 | (if (frame-live-p frame-initial-frame) | |
288 | ||
289 | ;; The initial frame we create above always has a minibuffer. | |
290 | ;; If the user wants to remove it, or make it a minibuffer-only | |
291 | ;; frame, then we'll have to delete the current frame and make a | |
292 | ;; new one; you can't remove or add a root window to/from an | |
293 | ;; existing frame. | |
294 | ;; | |
ec558adc JB |
295 | ;; NOTE: default-frame-alist was nil when we created the |
296 | ;; existing frame. We need to explicitly include | |
297 | ;; default-frame-alist in the parameters of the screen we | |
298 | ;; create here, so that its new value, gleaned from the user's | |
299 | ;; .emacs file, will be applied to the existing screen. | |
7eadab74 JB |
300 | (if (not (eq (cdr (or (assq 'minibuffer initial-frame-alist) |
301 | (assq 'minibuffer default-frame-alist) | |
302 | '(minibuffer . t))) | |
303 | t)) | |
304 | ;; Create the new frame. | |
b65e2f74 RS |
305 | (let (parms new) |
306 | ;; If the frame isn't visible yet, wait till it is. | |
307 | ;; If the user has to position the window, | |
308 | ;; Emacs doesn't know its real position until | |
309 | ;; the frame is seen to be visible. | |
310 | (while (not (cdr (assq 'visibility | |
311 | (frame-parameters frame-initial-frame)))) | |
312 | (sleep-for 1)) | |
06d7dff2 RS |
313 | (setq parms (frame-parameters frame-initial-frame)) |
314 | ;; Get rid of `name' unless it was specified explicitly before. | |
315 | (or (assq 'name frame-initial-frame-alist) | |
316 | (setq parms (delq (assq 'name parms) parms))) | |
b65e2f74 | 317 | (setq parms (append initial-frame-alist |
6eb018ba | 318 | default-frame-alist |
06d7dff2 | 319 | parms |
6eb018ba | 320 | nil)) |
c1e67401 RS |
321 | ;; Get rid of `reverse', because that was handled |
322 | ;; when we first made the frame. | |
323 | (setq parms (cons '(reverse) (delq (assq 'reverse parms) parms))) | |
324 | (if (assq 'height frame-initial-geometry-arguments) | |
5cee761f | 325 | (setq parms (assq-delete-all 'height parms))) |
c1e67401 | 326 | (if (assq 'width frame-initial-geometry-arguments) |
5cee761f | 327 | (setq parms (assq-delete-all 'width parms))) |
c1e67401 | 328 | (if (assq 'left frame-initial-geometry-arguments) |
5cee761f | 329 | (setq parms (assq-delete-all 'left parms))) |
c1e67401 | 330 | (if (assq 'top frame-initial-geometry-arguments) |
5cee761f | 331 | (setq parms (assq-delete-all 'top parms))) |
c1e67401 RS |
332 | (setq new |
333 | (make-frame | |
334 | ;; Use the geometry args that created the existing | |
335 | ;; frame, rather than the parms we get for it. | |
3ce3ff11 KH |
336 | (append frame-initial-geometry-arguments |
337 | '((user-size . t) (user-position . t)) | |
338 | parms))) | |
7eadab74 JB |
339 | ;; The initial frame, which we are about to delete, may be |
340 | ;; the only frame with a minibuffer. If it is, create a | |
341 | ;; new one. | |
342 | (or (delq frame-initial-frame (minibuffer-frame-list)) | |
746bd265 | 343 | (make-initial-minibuffer-frame nil)) |
7eadab74 JB |
344 | |
345 | ;; If the initial frame is serving as a surrogate | |
346 | ;; minibuffer frame for any frames, we need to wean them | |
347 | ;; onto a new frame. The default-minibuffer-frame | |
348 | ;; variable must be handled similarly. | |
349 | (let ((users-of-initial | |
350 | (filtered-frame-list | |
351 | (function (lambda (frame) | |
352 | (and (not (eq frame frame-initial-frame)) | |
353 | (eq (window-frame | |
354 | (minibuffer-window frame)) | |
355 | frame-initial-frame))))))) | |
356 | (if (or users-of-initial | |
357 | (eq default-minibuffer-frame frame-initial-frame)) | |
358 | ||
359 | ;; Choose an appropriate frame. Prefer frames which | |
360 | ;; are only minibuffers. | |
361 | (let* ((new-surrogate | |
362 | (car | |
363 | (or (filtered-frame-list | |
364 | (function | |
365 | (lambda (frame) | |
366 | (eq (cdr (assq 'minibuffer | |
367 | (frame-parameters frame))) | |
368 | 'only)))) | |
369 | (minibuffer-frame-list)))) | |
370 | (new-minibuffer (minibuffer-window new-surrogate))) | |
371 | ||
372 | (if (eq default-minibuffer-frame frame-initial-frame) | |
373 | (setq default-minibuffer-frame new-surrogate)) | |
374 | ||
375 | ;; Wean the frames using frame-initial-frame as | |
376 | ;; their minibuffer frame. | |
377 | (mapcar | |
378 | (function | |
379 | (lambda (frame) | |
380 | (modify-frame-parameters | |
381 | frame (list (cons 'minibuffer new-minibuffer))))) | |
382 | users-of-initial)))) | |
ec558adc JB |
383 | |
384 | ;; Redirect events enqueued at this frame to the new frame. | |
385 | ;; Is this a good idea? | |
7eadab74 | 386 | (redirect-frame-focus frame-initial-frame new) |
ec558adc | 387 | |
7eadab74 | 388 | ;; Finally, get rid of the old frame. |
0cffbbb9 | 389 | (delete-frame frame-initial-frame t)) |
7eadab74 JB |
390 | |
391 | ;; Otherwise, we don't need all that rigamarole; just apply | |
392 | ;; the new parameters. | |
3f2f8c83 RS |
393 | (let (newparms allparms tail) |
394 | (setq allparms (append initial-frame-alist | |
fed72c8d | 395 | default-frame-alist nil)) |
5b66a32f | 396 | (if (assq 'height frame-initial-geometry-arguments) |
5cee761f | 397 | (setq allparms (assq-delete-all 'height allparms))) |
5b66a32f | 398 | (if (assq 'width frame-initial-geometry-arguments) |
5cee761f | 399 | (setq allparms (assq-delete-all 'width allparms))) |
5b66a32f | 400 | (if (assq 'left frame-initial-geometry-arguments) |
5cee761f | 401 | (setq allparms (assq-delete-all 'left allparms))) |
5b66a32f | 402 | (if (assq 'top frame-initial-geometry-arguments) |
5cee761f | 403 | (setq allparms (assq-delete-all 'top allparms))) |
3f2f8c83 RS |
404 | (setq tail allparms) |
405 | ;; Find just the parms that have changed since we first | |
406 | ;; made this frame. Those are the ones actually set by | |
407 | ;; the init file. For those parms whose values we already knew | |
408 | ;; (such as those spec'd by command line options) | |
409 | ;; it is undesirable to specify the parm again | |
410 | ;; once the user has seen the frame and been able to alter it | |
411 | ;; manually. | |
412 | (while tail | |
413 | (let (newval oldval) | |
66de157d RS |
414 | (setq oldval (assq (car (car tail)) |
415 | frame-initial-frame-alist)) | |
3f2f8c83 | 416 | (setq newval (cdr (assq (car (car tail)) allparms))) |
66de157d | 417 | (or (and oldval (eq (cdr oldval) newval)) |
3f2f8c83 RS |
418 | (setq newparms |
419 | (cons (cons (car (car tail)) newval) newparms)))) | |
420 | (setq tail (cdr tail))) | |
86e58378 | 421 | (setq newparms (nreverse newparms)) |
3f2f8c83 | 422 | (modify-frame-parameters frame-initial-frame |
86e58378 | 423 | newparms) |
4e20aeaf KH |
424 | ;; If we changed the background color, |
425 | ;; we need to update the background-mode parameter | |
426 | ;; and maybe some faces too. | |
427 | (when (assq 'background-color newparms) | |
428 | (unless (assq 'background-mode newparms) | |
429 | (frame-set-background-mode frame-initial-frame)) | |
57ac0298 | 430 | (face-set-after-frame-default frame-initial-frame))))) |
64c669bc | 431 | |
7eadab74 JB |
432 | ;; Restore the original buffer. |
433 | (set-buffer old-buffer) | |
434 | ||
435 | ;; Make sure the initial frame can be GC'd if it is ever deleted. | |
d202f1f2 | 436 | ;; Make sure frame-notice-user-settings does nothing if called twice. |
8f2a992b | 437 | (setq frame-notice-user-settings nil) |
d202f1f2 | 438 | (setq frame-initial-frame nil))) |
64c669bc | 439 | |
746bd265 KH |
440 | (defun make-initial-minibuffer-frame (display) |
441 | (let ((parms (append minibuffer-frame-alist '((minibuffer . only))))) | |
442 | (if display | |
443 | (make-frame-on-display display parms) | |
444 | (make-frame parms)))) | |
445 | ||
7eadab74 | 446 | ;;;; Creation of additional frames, and other frame miscellanea |
dc6d9681 | 447 | |
7253d8e0 | 448 | (defun get-other-frame () |
40d34803 DL |
449 | "Return some frame other than the current frame. |
450 | Create one if necessary. Note that the minibuffer frame, if separate, | |
451 | is not considered (see `next-frame')." | |
dc6d9681 | 452 | (let ((s (if (equal (next-frame (selected-frame)) (selected-frame)) |
6eb018ba | 453 | (make-frame) |
dc6d9681 | 454 | (next-frame (selected-frame))))) |
64c669bc JB |
455 | s)) |
456 | ||
dc6d9681 JB |
457 | (defun next-multiframe-window () |
458 | "Select the next window, regardless of which frame it is on." | |
64c669bc JB |
459 | (interactive) |
460 | (select-window (next-window (selected-window) | |
461 | (> (minibuffer-depth) 0) | |
462 | t))) | |
463 | ||
dc6d9681 JB |
464 | (defun previous-multiframe-window () |
465 | "Select the previous window, regardless of which frame it is on." | |
64c669bc JB |
466 | (interactive) |
467 | (select-window (previous-window (selected-window) | |
468 | (> (minibuffer-depth) 0) | |
469 | t))) | |
470 | ||
6d73e337 RS |
471 | (defun make-frame-on-display (display &optional parameters) |
472 | "Make a frame on display DISPLAY. | |
473 | The optional second argument PARAMETERS specifies additional frame parameters." | |
474 | (interactive "sMake frame on display: ") | |
a9ca74cd RS |
475 | (or (string-match "\\`[^:]*:[0-9]+\\(\\.[0-9]+\\)?\\'" display) |
476 | (error "Invalid display, not HOST:SERVER or HOST:SERVER.SCREEN")) | |
6d73e337 RS |
477 | (make-frame (cons (cons 'display display) parameters))) |
478 | ||
6238bfaf RS |
479 | (defun make-frame-command () |
480 | "Make a new frame, and select it if the terminal displays only one frame." | |
481 | (interactive) | |
c1b1350b | 482 | (if (and window-system (not (eq window-system 'pc))) |
6238bfaf RS |
483 | (make-frame) |
484 | (select-frame (make-frame)))) | |
485 | ||
45c4fdeb SM |
486 | (defvar before-make-frame-hook nil |
487 | "Functions to run before a frame is created.") | |
488 | ||
489 | (defvar after-make-frame-functions nil | |
490 | "Functions to run after a frame is created. | |
491 | The functions are run with one arg, the newly created frame.") | |
492 | ||
72bf1a8b | 493 | (defvar after-setting-font-hook nil |
81b99826 GM |
494 | "Functions to run after a frame's font has been changed.") |
495 | ||
92e443b1 | 496 | ;; Alias, kept temporarily. |
31e1d920 | 497 | (defalias 'new-frame 'make-frame) |
bc93c097 | 498 | |
45c4fdeb SM |
499 | (defun make-frame (&optional parameters) |
500 | "Return a newly created frame displaying the current buffer. | |
501 | Optional argument PARAMETERS is an alist of parameters for the new frame. | |
502 | Each element of PARAMETERS should have the form (NAME . VALUE), for example: | |
a105105a | 503 | |
45c4fdeb | 504 | (name . STRING) The frame should be named STRING. |
43a2e52c | 505 | |
45c4fdeb SM |
506 | (width . NUMBER) The frame should be NUMBER characters in width. |
507 | (height . NUMBER) The frame should be NUMBER text lines high. | |
43a2e52c | 508 | |
45c4fdeb | 509 | You cannot specify either `width' or `height', you must use neither or both. |
43a2e52c | 510 | |
45c4fdeb SM |
511 | (minibuffer . t) The frame should have a minibuffer. |
512 | (minibuffer . nil) The frame should have no minibuffer. | |
513 | (minibuffer . only) The frame should contain only a minibuffer. | |
514 | (minibuffer . WINDOW) The frame should use WINDOW as its minibuffer window. | |
43a2e52c | 515 | |
45c4fdeb SM |
516 | Before the frame is created (via `frame-creation-function'), functions on the |
517 | hook `before-make-frame-hook' are run. After the frame is created, functions | |
518 | on `after-make-frame-functions' are run with one arg, the newly created frame." | |
64c669bc | 519 | (interactive) |
45c4fdeb SM |
520 | (run-hooks 'before-make-frame-hook) |
521 | (let ((frame (funcall frame-creation-function parameters))) | |
522 | (run-hook-with-args 'after-make-frame-functions frame) | |
523 | frame)) | |
64c669bc | 524 | |
7eadab74 JB |
525 | (defun filtered-frame-list (predicate) |
526 | "Return a list of all live frames which satisfy PREDICATE." | |
047bc928 GM |
527 | (let* ((frames (frame-list)) |
528 | (list frames)) | |
7eadab74 | 529 | (while (consp frames) |
047bc928 GM |
530 | (unless (funcall predicate (car frames)) |
531 | (setcar frames nil)) | |
7eadab74 | 532 | (setq frames (cdr frames))) |
047bc928 | 533 | (delq nil list))) |
7eadab74 JB |
534 | |
535 | (defun minibuffer-frame-list () | |
536 | "Return a list of all frames with their own minibuffers." | |
537 | (filtered-frame-list | |
538 | (function (lambda (frame) | |
539 | (eq frame (window-frame (minibuffer-window frame))))))) | |
540 | ||
9911648b EZ |
541 | (defun frames-on-display-list (&optional display) |
542 | "Return a list of all frames on DISPLAY. | |
543 | DISPLAY is a name of a display, a string of the form HOST:SERVER.SCREEN. | |
544 | If DISPLAY is omitted or nil, it defaults to the selected frame's display." | |
047bc928 GM |
545 | (let* ((display (or display (frame-parameter nil 'display))) |
546 | (func #'(lambda (frame) | |
547 | (eq (frame-parameter frame 'display) display)))) | |
9911648b EZ |
548 | (filtered-frame-list func))) |
549 | ||
550 | (defun framep-on-display (&optional display) | |
551 | "Return the type of frames on DISPLAY. | |
552 | DISPLAY may be a display name or a frame. If it is a frame, its type is | |
553 | returned. | |
554 | If DISPLAY is omitted or nil, it defaults to the selected frame's display. | |
555 | All frames on a given display are of the same type." | |
556 | (or (framep display) | |
557 | (framep (car (frames-on-display-list display))))) | |
558 | ||
58bf6042 JB |
559 | (defun frame-remove-geometry-params (param-list) |
560 | "Return the parameter list PARAM-LIST, but with geometry specs removed. | |
561 | This deletes all bindings in PARAM-LIST for `top', `left', `width', | |
791e09d8 | 562 | `height', `user-size' and `user-position' parameters. |
58bf6042 JB |
563 | Emacs uses this to avoid overriding explicit moves and resizings from |
564 | the user during startup." | |
565 | (setq param-list (cons nil param-list)) | |
566 | (let ((tail param-list)) | |
567 | (while (consp (cdr tail)) | |
568 | (if (and (consp (car (cdr tail))) | |
791e09d8 RS |
569 | (memq (car (car (cdr tail))) |
570 | '(height width top left user-position user-size))) | |
571 | (progn | |
572 | (setq frame-initial-geometry-arguments | |
573 | (cons (car (cdr tail)) frame-initial-geometry-arguments)) | |
574 | (setcdr tail (cdr (cdr tail)))) | |
58bf6042 | 575 | (setq tail (cdr tail))))) |
e11c3dc2 KH |
576 | (setq frame-initial-geometry-arguments |
577 | (nreverse frame-initial-geometry-arguments)) | |
58bf6042 JB |
578 | (cdr param-list)) |
579 | ||
580 | ||
0ac18fb0 RS |
581 | (defcustom focus-follows-mouse t |
582 | "*Non-nil if window system changes focus when you move the mouse." | |
583 | :type 'boolean | |
cd32a7ba DN |
584 | :group 'frames |
585 | :version "20.3") | |
26ef026d | 586 | |
ceab6935 | 587 | (defun other-frame (arg) |
a569dbc3 | 588 | "Select the ARG'th different visible frame, and raise it. |
ceab6935 RM |
589 | All frames are arranged in a cyclic order. |
590 | This command selects the frame ARG steps away in that order. | |
591 | A negative ARG moves in the opposite order." | |
592 | (interactive "p") | |
593 | (let ((frame (selected-frame))) | |
594 | (while (> arg 0) | |
a569dbc3 RM |
595 | (setq frame (next-frame frame)) |
596 | (while (not (eq (frame-visible-p frame) t)) | |
597 | (setq frame (next-frame frame))) | |
598 | (setq arg (1- arg))) | |
ceab6935 | 599 | (while (< arg 0) |
a569dbc3 RM |
600 | (setq frame (previous-frame frame)) |
601 | (while (not (eq (frame-visible-p frame) t)) | |
602 | (setq frame (previous-frame frame))) | |
915cfd1f | 603 | (setq arg (1+ arg))) |
699213bc | 604 | (select-frame frame) |
9af0f4cd | 605 | (raise-frame frame) |
9d702ce6 | 606 | ;; Ensure, if possible, that frame gets input focus. |
5b620012 GM |
607 | (when (eq window-system 'w32) |
608 | (w32-focus-frame frame)) | |
609 | (cond (focus-follows-mouse | |
610 | (unless (eq window-system 'w32) | |
611 | (set-mouse-position (selected-frame) (1- (frame-width)) 0))) | |
612 | (t | |
613 | (when (eq window-system 'x) | |
614 | (x-focus-frame frame)))))) | |
845cde06 EZ |
615 | |
616 | (defun make-frame-names-alist () | |
617 | (let* ((current-frame (selected-frame)) | |
618 | (falist | |
619 | (cons | |
620 | (cons (frame-parameter current-frame 'name) current-frame) nil)) | |
621 | (frame (next-frame nil t))) | |
622 | (while (not (eq frame current-frame)) | |
623 | (progn | |
624 | (setq falist (cons (cons (frame-parameter frame 'name) frame) falist)) | |
625 | (setq frame (next-frame frame t)))) | |
626 | falist)) | |
627 | ||
628 | (defvar frame-name-history nil) | |
845cde06 EZ |
629 | (defun select-frame-by-name (name) |
630 | "Select the frame whose name is NAME and raise it. | |
631 | If there is no frame by that name, signal an error." | |
632 | (interactive | |
716ff1c9 RS |
633 | (let* ((frame-names-alist (make-frame-names-alist)) |
634 | (default (car (car frame-names-alist))) | |
635 | (input (completing-read | |
636 | (format "Select Frame (default %s): " default) | |
637 | frame-names-alist nil t nil 'frame-name-history))) | |
845cde06 EZ |
638 | (if (= (length input) 0) |
639 | (list default) | |
640 | (list input)))) | |
716ff1c9 RS |
641 | (let* ((frame-names-alist (make-frame-names-alist)) |
642 | (frame (cdr (assoc name frame-names-alist)))) | |
845cde06 EZ |
643 | (or frame |
644 | (error "There is no frame named `%s'" name)) | |
645 | (make-frame-visible frame) | |
646 | (raise-frame frame) | |
880a9ae1 AI |
647 | (select-frame frame) |
648 | ;; Ensure, if possible, that frame gets input focus. | |
649 | (if (eq window-system 'w32) | |
650 | (w32-focus-frame frame) | |
651 | (when focus-follows-mouse | |
652 | (set-mouse-position (selected-frame) (1- (frame-width)) 0))))) | |
64c669bc | 653 | \f |
dc6d9681 JB |
654 | ;;;; Frame configurations |
655 | ||
656 | (defun current-frame-configuration () | |
657 | "Return a list describing the positions and states of all frames. | |
376a7584 JB |
658 | Its car is `frame-configuration'. |
659 | Each element of the cdr is a list of the form (FRAME ALIST WINDOW-CONFIG), | |
660 | where | |
661 | FRAME is a frame object, | |
662 | ALIST is an association list specifying some of FRAME's parameters, and | |
663 | WINDOW-CONFIG is a window configuration object for FRAME." | |
664 | (cons 'frame-configuration | |
665 | (mapcar (function | |
666 | (lambda (frame) | |
667 | (list frame | |
668 | (frame-parameters frame) | |
669 | (current-window-configuration frame)))) | |
670 | (frame-list)))) | |
dc6d9681 | 671 | |
68cd265f | 672 | (defun set-frame-configuration (configuration &optional nodelete) |
dc6d9681 JB |
673 | "Restore the frames to the state described by CONFIGURATION. |
674 | Each frame listed in CONFIGURATION has its position, size, window | |
68cd265f | 675 | configuration, and other parameters set as specified in CONFIGURATION. |
a78db71c RS |
676 | Ordinarily, this function deletes all existing frames not |
677 | listed in CONFIGURATION. But if optional second argument NODELETE | |
5da841d2 | 678 | is given and non-nil, the unwanted frames are iconified instead." |
376a7584 JB |
679 | (or (frame-configuration-p configuration) |
680 | (signal 'wrong-type-argument | |
681 | (list 'frame-configuration-p configuration))) | |
682 | (let ((config-alist (cdr configuration)) | |
683 | frames-to-delete) | |
06b1a5ef | 684 | (mapcar (function |
dc6d9681 | 685 | (lambda (frame) |
376a7584 | 686 | (let ((parameters (assq frame config-alist))) |
06b1a5ef JB |
687 | (if parameters |
688 | (progn | |
98e9d14b JB |
689 | (modify-frame-parameters |
690 | frame | |
85557d7e | 691 | ;; Since we can't set a frame's minibuffer status, |
98e9d14b JB |
692 | ;; we might as well omit the parameter altogether. |
693 | (let* ((parms (nth 1 parameters)) | |
694 | (mini (assq 'minibuffer parms))) | |
695 | (if mini (setq parms (delq mini parms))) | |
696 | parms)) | |
06b1a5ef | 697 | (set-window-configuration (nth 2 parameters))) |
dc6d9681 JB |
698 | (setq frames-to-delete (cons frame frames-to-delete)))))) |
699 | (frame-list)) | |
a78db71c | 700 | (if nodelete |
5da841d2 RS |
701 | ;; Note: making frames invisible here was tried |
702 | ;; but led to some strange behavior--each time the frame | |
703 | ;; was made visible again, the window manager asked afresh | |
704 | ;; for where to put it. | |
705 | (mapcar 'iconify-frame frames-to-delete) | |
a78db71c | 706 | (mapcar 'delete-frame frames-to-delete)))) |
64c669bc | 707 | \f |
dc6d9681 JB |
708 | ;;;; Convenience functions for accessing and interactively changing |
709 | ;;;; frame parameters. | |
64c669bc | 710 | |
151bdc83 | 711 | (defun frame-height (&optional frame) |
dc6d9681 JB |
712 | "Return number of lines available for display on FRAME. |
713 | If FRAME is omitted, describe the currently selected frame." | |
151bdc83 | 714 | (cdr (assq 'height (frame-parameters frame)))) |
dc6d9681 JB |
715 | |
716 | (defun frame-width (&optional frame) | |
717 | "Return number of columns available for display on FRAME. | |
718 | If FRAME is omitted, describe the currently selected frame." | |
151bdc83 | 719 | (cdr (assq 'width (frame-parameters frame)))) |
dc6d9681 | 720 | |
889611f0 RS |
721 | (defalias 'set-default-font 'set-frame-font) |
722 | (defun set-frame-font (font-name) | |
40d34803 | 723 | "Set the font of the selected frame to FONT-NAME. |
61298010 RS |
724 | When called interactively, prompt for the name of the font to use. |
725 | To get the frame's current default font, use `frame-parameters'." | |
faaf40e4 MB |
726 | (interactive |
727 | (list | |
728 | (let ((completion-ignore-case t)) | |
729 | (completing-read "Font name: " | |
730 | (mapcar #'list | |
731 | ;; x-list-fonts will fail with an error | |
732 | ;; if this frame doesn't support fonts. | |
733 | (x-list-fonts "*" nil (selected-frame))))))) | |
dc6d9681 | 734 | (modify-frame-parameters (selected-frame) |
4033f46b | 735 | (list (cons 'font font-name))) |
72bf1a8b | 736 | (run-hooks 'after-setting-font-hook 'after-setting-font-hooks)) |
64c669bc | 737 | |
8290babd | 738 | (defun set-background-color (color-name) |
40d34803 | 739 | "Set the background color of the selected frame to COLOR-NAME. |
61298010 RS |
740 | When called interactively, prompt for the name of the color to use. |
741 | To get the frame's current background color, use `frame-parameters'." | |
40d34803 | 742 | (interactive (list (facemenu-read-color))) |
dc6d9681 | 743 | (modify-frame-parameters (selected-frame) |
c9dc8173 | 744 | (list (cons 'background-color color-name)))) |
64c669bc | 745 | |
8290babd | 746 | (defun set-foreground-color (color-name) |
40d34803 | 747 | "Set the foreground color of the selected frame to COLOR-NAME. |
61298010 RS |
748 | When called interactively, prompt for the name of the color to use. |
749 | To get the frame's current foreground color, use `frame-parameters'." | |
40d34803 | 750 | (interactive (list (facemenu-read-color))) |
dc6d9681 | 751 | (modify-frame-parameters (selected-frame) |
c9dc8173 | 752 | (list (cons 'foreground-color color-name)))) |
64c669bc JB |
753 | |
754 | (defun set-cursor-color (color-name) | |
40d34803 | 755 | "Set the text cursor color of the selected frame to COLOR-NAME. |
61298010 RS |
756 | When called interactively, prompt for the name of the color to use. |
757 | To get the frame's current cursor color, use `frame-parameters'." | |
40d34803 | 758 | (interactive (list (facemenu-read-color))) |
dc6d9681 | 759 | (modify-frame-parameters (selected-frame) |
7eadab74 | 760 | (list (cons 'cursor-color color-name)))) |
64c669bc | 761 | |
eaa974e1 | 762 | (defun set-mouse-color (color-name) |
40d34803 | 763 | "Set the color of the mouse pointer of the selected frame to COLOR-NAME. |
61298010 RS |
764 | When called interactively, prompt for the name of the color to use. |
765 | To get the frame's current mouse color, use `frame-parameters'." | |
40d34803 | 766 | (interactive (list (facemenu-read-color))) |
dc6d9681 | 767 | (modify-frame-parameters (selected-frame) |
ec6d4463 KH |
768 | (list (cons 'mouse-color |
769 | (or color-name | |
770 | (cdr (assq 'mouse-color | |
771 | (frame-parameters)))))))) | |
7eadab74 | 772 | |
eaa974e1 | 773 | (defun set-border-color (color-name) |
40d34803 | 774 | "Set the color of the border of the selected frame to COLOR-NAME. |
61298010 RS |
775 | When called interactively, prompt for the name of the color to use. |
776 | To get the frame's current border color, use `frame-parameters'." | |
40d34803 | 777 | (interactive (list (facemenu-read-color))) |
eaa974e1 JB |
778 | (modify-frame-parameters (selected-frame) |
779 | (list (cons 'border-color color-name)))) | |
780 | ||
781 | (defun auto-raise-mode (arg) | |
7eadab74 | 782 | "Toggle whether or not the selected frame should auto-raise. |
79e6ae33 RS |
783 | With arg, turn auto-raise mode on if and only if arg is positive. |
784 | Note that this controls Emacs's own auto-raise feature. | |
785 | Some window managers allow you to enable auto-raise for certain windows. | |
786 | You can use that for Emacs windows if you wish, but if you do, | |
787 | that is beyond the control of Emacs and this command has no effect on it." | |
7eadab74 JB |
788 | (interactive "P") |
789 | (if (null arg) | |
790 | (setq arg | |
791 | (if (cdr (assq 'auto-raise (frame-parameters (selected-frame)))) | |
792 | -1 1))) | |
9626b928 GM |
793 | (if (> arg 0) |
794 | (raise-frame (selected-frame))) | |
dc6d9681 | 795 | (modify-frame-parameters (selected-frame) |
7eadab74 JB |
796 | (list (cons 'auto-raise (> arg 0))))) |
797 | ||
eaa974e1 | 798 | (defun auto-lower-mode (arg) |
7eadab74 | 799 | "Toggle whether or not the selected frame should auto-lower. |
79e6ae33 RS |
800 | With arg, turn auto-lower mode on if and only if arg is positive. |
801 | Note that this controls Emacs's own auto-lower feature. | |
802 | Some window managers allow you to enable auto-lower for certain windows. | |
803 | You can use that for Emacs windows if you wish, but if you do, | |
804 | that is beyond the control of Emacs and this command has no effect on it." | |
7eadab74 JB |
805 | (interactive "P") |
806 | (if (null arg) | |
807 | (setq arg | |
808 | (if (cdr (assq 'auto-lower (frame-parameters (selected-frame)))) | |
809 | -1 1))) | |
dc6d9681 | 810 | (modify-frame-parameters (selected-frame) |
7eadab74 | 811 | (list (cons 'auto-lower (> arg 0))))) |
7777d03b EZ |
812 | (defun set-frame-name (name) |
813 | "Set the name of the selected frame to NAME. | |
814 | When called interactively, prompt for the name of the frame. | |
815 | The frame name is displayed on the modeline if the terminal displays only | |
816 | one frame, otherwise the name is displayed on the frame's caption bar." | |
817 | (interactive "sFrame name: ") | |
818 | (modify-frame-parameters (selected-frame) | |
819 | (list (cons 'name name)))) | |
64c669bc | 820 | \f |
9911648b EZ |
821 | ;;;; Frame/display capabilities. |
822 | (defun display-mouse-p (&optional display) | |
823 | "Return non-nil if DISPLAY has a mouse available. | |
824 | DISPLAY can be a display name, a frame, or nil (meaning the selected | |
825 | frame's display)." | |
826 | (let ((frame-type (framep-on-display display))) | |
827 | (cond | |
828 | ((eq frame-type 'pc) | |
829 | (msdos-mouse-p)) | |
830 | ((eq system-type 'windows-nt) | |
831 | (> w32-num-mouse-buttons 0)) | |
832 | ((memq frame-type '(x mac)) | |
833 | t) ;; We assume X and Mac *always* have a pointing device | |
834 | (t | |
7565ee93 DL |
835 | (or (and (featurep 'xt-mouse) |
836 | xterm-mouse-mode) | |
837 | ;; t-mouse is distributed with the GPM package. It doesn't have | |
838 | ;; a toggle. | |
839 | (featurep 't-mouse)))))) | |
9911648b EZ |
840 | |
841 | (defun display-popup-menus-p (&optional display) | |
842 | "Return non-nil if popup menus are supported on DISPLAY. | |
843 | DISPLAY can be a display name, a frame, or nil (meaning the selected | |
844 | frame's display). | |
845 | Support for popup menus requires that the mouse be available." | |
846 | (and | |
847 | (let ((frame-type (framep-on-display display))) | |
848 | (memq frame-type '(x w32 pc mac))) | |
849 | (display-mouse-p display))) | |
850 | ||
851 | (defun display-graphic-p (&optional display) | |
852 | "Return non-nil if DISPLAY is a graphic display. | |
853 | Graphical displays are those which are capable of displaying several | |
854 | frames and several different fonts at once. This is true for displays | |
855 | that use a window system such as X, and false for text-only terminals. | |
856 | DISPLAY can be a display name, a frame, or nil (meaning the selected | |
857 | frame's display)." | |
858 | (not (null (memq (framep-on-display display) '(x w32 mac))))) | |
859 | ||
6693b279 EZ |
860 | (defalias 'display-multi-frame-p 'display-graphic-p) |
861 | (defalias 'display-multi-font-p 'display-graphic-p) | |
862 | ||
9911648b EZ |
863 | (defun display-selections-p (&optional display) |
864 | "Return non-nil if DISPLAY supports selections. | |
865 | A selection is a way to transfer text or other data between programs | |
866 | via special system buffers called `selection' or `cut buffer' or | |
867 | `clipboard'. | |
868 | DISPLAY can be a display name, a frame, or nil (meaning the selected | |
869 | frame's display)." | |
870 | (let ((frame-type (framep-on-display display))) | |
871 | (cond | |
872 | ((eq frame-type 'pc) | |
873 | ;; MS-DOG frames support selections when Emacs runs inside | |
874 | ;; the Windows' DOS Box. | |
875 | (not (null dos-windows-version))) | |
876 | ((memq frame-type '(x w32 mac)) | |
877 | t) ;; FIXME? | |
878 | (t | |
879 | nil)))) | |
880 | ||
881 | (defun display-screens (&optional display) | |
882 | "Return the number of screens associated with DISPLAY." | |
883 | (let ((frame-type (framep-on-display display))) | |
884 | (cond | |
885 | ((memq frame-type '(x w32)) | |
886 | (x-display-screens display)) | |
887 | (t ;; FIXME: is this correct for the Mac? | |
888 | 1)))) | |
889 | ||
890 | (defun display-pixel-height (&optional display) | |
891 | "Return the height of DISPLAY's screen in pixels. | |
892 | For character terminals, each character counts as a single pixel." | |
893 | (let ((frame-type (framep-on-display display))) | |
894 | (cond | |
895 | ((memq frame-type '(x w32 mac)) | |
896 | (x-display-pixel-height display)) | |
897 | (t | |
898 | (frame-height (if (framep display) display (selected-frame))))))) | |
899 | ||
900 | (defun display-pixel-width (&optional display) | |
901 | "Return the width of DISPLAY's screen in pixels. | |
902 | For character terminals, each character counts as a single pixel." | |
903 | (let ((frame-type (framep-on-display display))) | |
904 | (cond | |
905 | ((memq frame-type '(x w32 mac)) | |
906 | (x-display-pixel-width display)) | |
907 | (t | |
908 | (frame-width (if (framep display) display (selected-frame))))))) | |
909 | ||
910 | (defun display-mm-height (&optional display) | |
911 | "Return the height of DISPLAY's screen in millimeters. | |
912 | If the information is unavailable, value is nil." | |
913 | (and (memq (framep-on-display display) '(x w32 mac)) | |
914 | (x-display-mm-height display))) | |
915 | ||
916 | (defun display-mm-width (&optional display) | |
917 | "Return the width of DISPLAY's screen in millimeters. | |
918 | If the information is unavailable, value is nil." | |
919 | (and (memq (framep-on-display display) '(x w32 mac)) | |
920 | (x-display-mm-width display))) | |
921 | ||
922 | (defun display-backing-store (&optional display) | |
923 | "Return the backing store capability of DISPLAY's screen. | |
924 | The value may be `always', `when-mapped', `not-useful', or nil if | |
925 | the question is inapplicable to a certain kind of display." | |
926 | (let ((frame-type (framep-on-display display))) | |
927 | (cond | |
928 | ((memq frame-type '(x w32 mac)) | |
929 | (x-display-backing-store display)) | |
930 | (t | |
931 | 'not-useful)))) | |
932 | ||
933 | (defun display-save-under (&optional display) | |
934 | "Return non-nil if DISPLAY's screen supports the SaveUnder feature." | |
935 | (let ((frame-type (framep-on-display display))) | |
936 | (cond | |
937 | ((memq frame-type '(x w32 mac)) | |
938 | (x-display-save-under display)) | |
939 | (t | |
940 | 'not-useful)))) | |
941 | ||
942 | (defun display-planes (&optional display) | |
943 | "Return the number of planes supported by DISPLAY." | |
944 | (let ((frame-type (framep-on-display display))) | |
945 | (cond | |
946 | ((memq frame-type '(x w32 mac)) | |
947 | (x-display-planes display)) | |
948 | ((eq frame-type 'pc) | |
949 | 4) | |
950 | (t | |
951 | (truncate (log (length (tty-color-alist)) 2)))))) | |
952 | ||
953 | (defun display-color-cells (&optional display) | |
954 | "Return the number of color cells supported by DISPLAY." | |
955 | (let ((frame-type (framep-on-display display))) | |
956 | (cond | |
957 | ((memq frame-type '(x w32 mac)) | |
958 | (x-display-color-cells display)) | |
959 | ((eq frame-type 'pc) | |
960 | 16) | |
961 | (t | |
962 | (length (tty-color-alist)))))) | |
963 | ||
964 | (defun display-visual-class (&optional display) | |
965 | "Returns the visual class of DISPLAY. | |
966 | The value is one of the symbols `static-gray', `gray-scale', | |
967 | `static-color', `pseudo-color', `true-color', or `direct-color'." | |
968 | (let ((frame-type (framep-on-display display))) | |
969 | (cond | |
970 | ((memq frame-type '(x w32 mac)) | |
971 | (x-display-visual-class display)) | |
972 | ((and (memq frame-type '(pc t)) | |
973 | (tty-display-color-p display)) | |
974 | 'static-color) | |
975 | (t | |
976 | 'static-gray)))) | |
977 | ||
978 | \f | |
dc6d9681 | 979 | ;;;; Aliases for backward compatibility with Emacs 18. |
31e1d920 ER |
980 | (defalias 'screen-height 'frame-height) |
981 | (defalias 'screen-width 'frame-width) | |
9e2b097b JB |
982 | |
983 | (defun set-screen-width (cols &optional pretend) | |
40d34803 DL |
984 | "Obsolete function to change the size of the screen to COLS columns. |
985 | Optional second arg non-nil means that redisplay should use COLS columns | |
986 | but that the idea of the actual width of the frame should not be changed. | |
987 | This function is provided only for compatibility with Emacs 18; new code | |
fe668515 | 988 | should use `set-frame-width instead'." |
9e2b097b JB |
989 | (set-frame-width (selected-frame) cols pretend)) |
990 | ||
991 | (defun set-screen-height (lines &optional pretend) | |
40d34803 DL |
992 | "Obsolete function to change the height of the screen to LINES lines. |
993 | Optional second arg non-nil means that redisplay should use LINES lines | |
994 | but that the idea of the actual height of the screen should not be changed. | |
995 | This function is provided only for compatibility with Emacs 18; new code | |
ef5a6345 | 996 | should use `set-frame-height' instead." |
9e2b097b JB |
997 | (set-frame-height (selected-frame) lines pretend)) |
998 | ||
154a757e GM |
999 | (defun delete-other-frames (&optional frame) |
1000 | "Delete all frames except FRAME. | |
1001 | FRAME nil or omitted means delete all frames except the selected frame." | |
1002 | (interactive) | |
1003 | (unless frame | |
1004 | (setq frame (selected-frame))) | |
1005 | (mapcar 'delete-frame (delq frame (frame-list)))) | |
1006 | ||
1007 | ||
2598a293 SM |
1008 | (make-obsolete 'screen-height 'frame-height) ;before 19.15 |
1009 | (make-obsolete 'screen-width 'frame-width) ;before 19.15 | |
1010 | (make-obsolete 'set-screen-width 'set-frame-width) ;before 19.15 | |
1011 | (make-obsolete 'set-screen-height 'set-frame-height) ;before 19.15 | |
dc6d9681 JB |
1012 | |
1013 | \f | |
81b99826 GM |
1014 | ;;; Highlighting trailing whitespace. |
1015 | ||
1016 | (make-variable-buffer-local 'show-trailing-whitespace) | |
1017 | ||
1018 | (defcustom show-trailing-whitespace nil | |
1019 | "*Non-nil means highlight trailing whitespace in face `trailing-whitespace'." | |
1020 | :tag "Highlight trailing whitespace." | |
1021 | :set #'(lambda (symbol value) (set-default symbol value)) | |
1022 | :type 'boolean | |
1023 | :group 'font-lock) | |
1024 | ||
1025 | ||
1026 | \f | |
79b14b94 GM |
1027 | ;;; Scrolling |
1028 | ||
1029 | (defgroup scrolling nil | |
1030 | "Scrolling windows." | |
1031 | :version "21.1" | |
1032 | :group 'frames) | |
1033 | ||
1034 | (defcustom automatic-hscrolling t | |
1035 | "*Allow or disallow autmatic scrolling windows horizontally. | |
9ea60c46 | 1036 | If non-nil, windows are automatically scrolled horizontally to make |
79b14b94 GM |
1037 | point visible." |
1038 | :version "21.1" | |
1039 | :type 'boolean | |
1040 | :group 'scrolling) | |
1041 | ||
1042 | \f | |
81b99826 GM |
1043 | ;;; Blinking cursor |
1044 | ||
1045 | (defgroup cursor nil | |
ca693be8 | 1046 | "Displaying text cursors." |
40d34803 | 1047 | :version "21.1" |
81b99826 GM |
1048 | :group 'frames) |
1049 | ||
1050 | (defcustom blink-cursor-delay 0.5 | |
ca693be8 | 1051 | "*Seconds of idle time after which cursor starts to blink." |
81b99826 GM |
1052 | :tag "Delay in seconds." |
1053 | :type 'number | |
1054 | :group 'cursor) | |
1055 | ||
1056 | (defcustom blink-cursor-interval 0.5 | |
1057 | "*Length of cursor blink interval in seconds." | |
1058 | :tag "Blink interval in seconds." | |
1059 | :type 'number | |
1060 | :group 'cursor) | |
1061 | ||
1062 | (defvar blink-cursor-idle-timer nil | |
ca693be8 GM |
1063 | "Timer started after `blink-cursor-delay' seconds of Emacs idle time. |
1064 | The function `blink-cursor-start' is called when the timer fires.") | |
81b99826 GM |
1065 | |
1066 | (defvar blink-cursor-timer nil | |
ca693be8 GM |
1067 | "Timer started from `blink-cursor-start'. |
1068 | This timer calls `blink-cursor' every `blink-cursor-interval' seconds.") | |
81b99826 GM |
1069 | |
1070 | (defvar blink-cursor-mode nil | |
1071 | "Non-nil means blinking cursor is active.") | |
1072 | ||
1073 | (defun blink-cursor-mode (arg) | |
1074 | "Toggle blinking cursor mode. | |
1075 | With arg, turn blinking cursor mode on iff arg is positive. | |
1076 | When blinking cursor mode is enabled, the cursor of the selected | |
1077 | window blinks." | |
1078 | (interactive "P") | |
1079 | (let ((on-p (if (null arg) | |
1080 | (not blink-cursor-mode) | |
1081 | (> (prefix-numeric-value arg) 0)))) | |
1082 | (if blink-cursor-idle-timer | |
1083 | (cancel-timer blink-cursor-idle-timer)) | |
1084 | (if blink-cursor-timer | |
1085 | (cancel-timer blink-cursor-timer)) | |
1086 | (setq blink-cursor-idle-timer nil | |
1087 | blink-cursor-timer nil | |
1088 | blink-cursor-mode nil) | |
1089 | (if on-p | |
1090 | (progn | |
1091 | ;; Hide the cursor. | |
cae2c28e | 1092 | ;(internal-show-cursor nil nil) |
81b99826 GM |
1093 | (setq blink-cursor-idle-timer |
1094 | (run-with-idle-timer blink-cursor-delay | |
1095 | blink-cursor-delay | |
1096 | 'blink-cursor-start)) | |
d4ed0cba GM |
1097 | (setq blink-cursor-mode t)) |
1098 | (internal-show-cursor nil t)))) | |
81b99826 | 1099 | |
cae2c28e GM |
1100 | ;; Note that this is really initialized from startup.el before |
1101 | ;; the init-file is read. | |
1102 | ||
1103 | (defcustom blink-cursor nil | |
ca693be8 | 1104 | "*Non-nil means blinking cursor mode is active." |
cae2c28e | 1105 | :group 'cursor |
81b99826 GM |
1106 | :tag "Blinking cursor" |
1107 | :type 'boolean | |
81b99826 GM |
1108 | :set #'(lambda (symbol value) |
1109 | (set-default symbol value) | |
1110 | (blink-cursor-mode (or value 0)))) | |
1111 | ||
1112 | (defun blink-cursor-start () | |
ca693be8 GM |
1113 | "Timer function called from the timer `blink-cursor-idle-timer'. |
1114 | This starts the timer `blink-cursor-timer', which makes the cursor blink | |
1115 | if appropriate. It also arranges to cancel that timer when the next | |
1116 | command starts, by installing a pre-command hook." | |
81b99826 GM |
1117 | (when (null blink-cursor-timer) |
1118 | (add-hook 'pre-command-hook 'blink-cursor-end) | |
1119 | (setq blink-cursor-timer | |
1120 | (run-with-timer blink-cursor-interval blink-cursor-interval | |
0a5ebe4b GM |
1121 | 'blink-cursor-timer-function)))) |
1122 | ||
1123 | (defun blink-cursor-timer-function () | |
1124 | "Timer function of timer `blink-cursor-timer'." | |
1125 | (internal-show-cursor nil (not (internal-show-cursor-p)))) | |
81b99826 GM |
1126 | |
1127 | (defun blink-cursor-end () | |
1128 | "Stop cursor blinking. | |
ca693be8 GM |
1129 | This is installed as a pre-command hook by `blink-cursor-start'. |
1130 | When run, it cancels the timer `blink-cursor-timer' and removes | |
1131 | itself as a pre-command hook." | |
81b99826 | 1132 | (remove-hook 'pre-command-hook 'blink-cursor-end) |
0a5ebe4b | 1133 | (internal-show-cursor nil t) |
81b99826 GM |
1134 | (cancel-timer blink-cursor-timer) |
1135 | (setq blink-cursor-timer nil)) | |
1136 | ||
1137 | ||
1138 | \f | |
1139 | ;;; Busy-cursor. | |
1140 | ||
1141 | (defcustom busy-cursor t | |
ca693be8 | 1142 | "*Non-nil means show a busy-cursor when running under a window system." |
81b99826 GM |
1143 | :tag "Busy-cursor" |
1144 | :type 'boolean | |
1145 | :group 'cursor | |
1146 | :get #'(lambda (symbol) display-busy-cursor) | |
1147 | :set #'(lambda (symbol value) | |
1148 | (set-default symbol value) | |
1149 | (setq display-busy-cursor value))) | |
1150 | ||
1d0a3ef4 GM |
1151 | (defcustom busy-cursor-delay-seconds 1 |
1152 | "*Seconds to wait before displaying a busy-cursor." | |
1153 | :tag "Busy-cursor delay" | |
0a86e779 | 1154 | :type 'number |
1d0a3ef4 GM |
1155 | :group 'cursor |
1156 | :get #'(lambda (symbol) busy-cursor-delay) | |
1157 | :set #'(lambda (symbol value) | |
1158 | (set-default symbol value) | |
1159 | (setq busy-cursor-delay value))) | |
1160 | ||
5b2c5477 GM |
1161 | \f |
1162 | (defcustom show-cursor-in-non-selected-windows t | |
1163 | "*Non-nil means show a hollow box cursor in non-selected-windows. | |
e053c60f GM |
1164 | If nil, don't show a cursor except in the selected window. |
1165 | Setting this variable directly has no effect; use custom instead." | |
5b2c5477 GM |
1166 | :tag "Cursor in non-selected windows" |
1167 | :type 'boolean | |
1168 | :group 'cursor | |
1169 | :get #'(lambda (symbol) cursor-in-non-selected-windows) | |
1170 | :set #'(lambda (symbol value) | |
1171 | (set-default symbol value) | |
1172 | (setq cursor-in-non-selected-windows value) | |
1173 | (force-mode-line-update t))) | |
1174 | ||
81b99826 | 1175 | \f |
64c669bc | 1176 | ;;;; Key bindings |
64c669bc | 1177 | |
6238bfaf | 1178 | (define-key ctl-x-5-map "2" 'make-frame-command) |
154a757e | 1179 | (define-key ctl-x-5-map "1" 'delete-other-frames) |
dc6d9681 | 1180 | (define-key ctl-x-5-map "0" 'delete-frame) |
ceab6935 | 1181 | (define-key ctl-x-5-map "o" 'other-frame) |
49116ac0 | 1182 | |
dc6d9681 | 1183 | (provide 'frame) |
c88ab9ce | 1184 | |
dc6d9681 | 1185 | ;;; frame.el ends here |