| 1 | ;;; frame.el --- multi-frame management independent of window systems. |
| 2 | |
| 3 | ;;;; Copyright (C) 1993, 1994 Free Software Foundation, Inc. |
| 4 | |
| 5 | ;; Maintainer: FSF |
| 6 | ;; Keywords: internal |
| 7 | |
| 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 |
| 22 | ;;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. |
| 23 | |
| 24 | ;;; Code: |
| 25 | |
| 26 | (defvar frame-creation-function nil |
| 27 | "Window-system dependent function to call to create a new frame. |
| 28 | The window system startup file should set this to its frame creation |
| 29 | function, which should take an alist of parameters as its argument.") |
| 30 | |
| 31 | ;;; The initial value given here for this must ask for a minibuffer. |
| 32 | ;;; There must always exist a frame with a minibuffer, and after we |
| 33 | ;;; delete the terminal frame, this will be the only frame. |
| 34 | (defvar initial-frame-alist '((minibuffer . t)) |
| 35 | "Alist of frame parameters for creating the initial X window frame. |
| 36 | You can set this in your `.emacs' file; for example, |
| 37 | (setq initial-frame-alist '((top . 1) (left . 1) (width . 80) (height . 55))) |
| 38 | Parameters specified here supersede the values given in `default-frame-alist'. |
| 39 | |
| 40 | If the value calls for a frame without a minibuffer, and you have not created |
| 41 | a minibuffer frame on your own, one is created according to |
| 42 | `minibuffer-frame-alist'. |
| 43 | |
| 44 | You can specify geometry-related options for just the initial frame |
| 45 | by setting this variable in your `.emacs' file; however, they won't |
| 46 | take affect until Emacs reads `.emacs', which happens after first creating |
| 47 | the frame. If you want the frame to have the proper geometry as soon |
| 48 | as it appears, you need to use this three-step process: |
| 49 | * Specify X resources to give the geometry you want. |
| 50 | * Set `default-frame-alist' to override these options so that they |
| 51 | don't affect subsequent frames. |
| 52 | * Set `initial-frame-alist' in a way that matches the X resources, |
| 53 | to override what you put in `default-frame-alist'.") |
| 54 | |
| 55 | (defvar minibuffer-frame-alist '((width . 80) (height . 2)) |
| 56 | "Alist of frame parameters for initially creating a minibuffer frame. |
| 57 | You can set this in your `.emacs' file; for example, |
| 58 | (setq minibuffer-frame-alist |
| 59 | '((top . 1) (left . 1) (width . 80) (height . 2))) |
| 60 | Parameters specified here supersede the values given in |
| 61 | `default-frame-alist'.") |
| 62 | |
| 63 | (defvar pop-up-frame-alist nil |
| 64 | "Alist of frame parameters used when creating pop-up frames. |
| 65 | Pop-up frames are used for completions, help, and the like. |
| 66 | This variable can be set in your init file, like this: |
| 67 | (setq pop-up-frame-alist '((width . 80) (height . 20))) |
| 68 | These supersede the values given in `default-frame-alist'.") |
| 69 | |
| 70 | (setq pop-up-frame-function |
| 71 | (function (lambda () |
| 72 | (make-frame pop-up-frame-alist)))) |
| 73 | |
| 74 | (defvar special-display-frame-alist |
| 75 | '((height . 14) (width . 80) (unsplittable . t)) |
| 76 | "*Alist of frame parameters used when creating special frames. |
| 77 | Special frames are used for buffers whose names are in |
| 78 | `special-display-buffer-names' and for buffers whose names match |
| 79 | one of the regular expressions in `special-display-regexps'. |
| 80 | This variable can be set in your init file, like this: |
| 81 | (setq special-display-frame-alist '((width . 80) (height . 20))) |
| 82 | These supersede the values given in `default-frame-alist'.") |
| 83 | |
| 84 | ;; Display BUFFER in its own frame, reusing an existing window if any. |
| 85 | ;; Return the window chosen. |
| 86 | ;; Currently we do not insist on selecting the window within its frame. |
| 87 | ;; If ARGS is an alist, use it as a list of frame parameter specs. |
| 88 | ;; If ARGS is a list whose car is a symbol. |
| 89 | ;; use (car ARGS) as a function to do the work. |
| 90 | ;; Pass it BUFFER as first arg, and (cdr ARGS) gives the rest of the args. |
| 91 | (defun special-display-popup-frame (buffer &optional args) |
| 92 | (if (and args (symbolp (car args))) |
| 93 | (apply (car args) buffer (cdr args)) |
| 94 | (let ((window (get-buffer-window buffer t))) |
| 95 | (if window |
| 96 | ;; If we have a window already, make it visible. |
| 97 | (let ((frame (window-frame window))) |
| 98 | (make-frame-visible frame) |
| 99 | (raise-frame frame) |
| 100 | window) |
| 101 | ;; If no window yet, make one in a new frame. |
| 102 | (let ((frame (make-frame (append args special-display-frame-alist)))) |
| 103 | (set-window-buffer (frame-selected-window frame) buffer) |
| 104 | (set-window-dedicated-p (frame-selected-window frame) t) |
| 105 | (frame-selected-window frame)))))) |
| 106 | |
| 107 | ;; Handle delete-frame events from the X server. |
| 108 | (defun handle-delete-frame (event) |
| 109 | (interactive "e") |
| 110 | (let ((frame (posn-window (event-start event))) |
| 111 | (i 0) |
| 112 | (tail (frame-list))) |
| 113 | (while tail |
| 114 | (and (frame-visible-p (car tail)) |
| 115 | (not (eq (car tail) frame)) |
| 116 | (setq i (1+ i))) |
| 117 | (setq tail (cdr tail))) |
| 118 | (if (> i 0) |
| 119 | (delete-frame frame t) |
| 120 | (kill-emacs)))) |
| 121 | \f |
| 122 | ;;;; Arrangement of frames at startup |
| 123 | |
| 124 | ;;; 1) Load the window system startup file from the lisp library and read the |
| 125 | ;;; high-priority arguments (-q and the like). The window system startup |
| 126 | ;;; file should create any frames specified in the window system defaults. |
| 127 | ;;; |
| 128 | ;;; 2) If no frames have been opened, we open an initial text frame. |
| 129 | ;;; |
| 130 | ;;; 3) Once the init file is done, we apply any newly set parameters |
| 131 | ;;; in initial-frame-alist to the frame. |
| 132 | |
| 133 | ;; These are now called explicitly at the proper times, |
| 134 | ;; since that is easier to understand. |
| 135 | ;; Actually using hooks within Emacs is bad for future maintenance. --rms. |
| 136 | ;; (add-hook 'before-init-hook 'frame-initialize) |
| 137 | ;; (add-hook 'window-setup-hook 'frame-notice-user-settings) |
| 138 | |
| 139 | ;;; If we create the initial frame, this is it. |
| 140 | (defvar frame-initial-frame nil) |
| 141 | |
| 142 | ;; Record the parameters used in frame-initialize to make the initial frame. |
| 143 | (defvar frame-initial-frame-alist) |
| 144 | |
| 145 | (defvar frame-initial-geometry-arguments nil) |
| 146 | |
| 147 | ;;; startup.el calls this function before loading the user's init |
| 148 | ;;; file - if there is no frame with a minibuffer open now, create |
| 149 | ;;; one to display messages while loading the init file. |
| 150 | (defun frame-initialize () |
| 151 | |
| 152 | ;; Are we actually running under a window system at all? |
| 153 | (if (and window-system (not noninteractive)) |
| 154 | (progn |
| 155 | ;; Turn on special-display processing only if there's a window system. |
| 156 | (setq special-display-function 'special-display-popup-frame) |
| 157 | |
| 158 | ;; If there is no frame with a minibuffer besides the terminal |
| 159 | ;; frame, then we need to create the opening frame. Make sure |
| 160 | ;; it has a minibuffer, but let initial-frame-alist omit the |
| 161 | ;; minibuffer spec. |
| 162 | (or (delq terminal-frame (minibuffer-frame-list)) |
| 163 | (progn |
| 164 | (setq frame-initial-frame-alist |
| 165 | (append initial-frame-alist default-frame-alist)) |
| 166 | ;; Record these with their default values |
| 167 | ;; if they don't have any values explicitly. |
| 168 | (or (assq 'vertical-scroll-bars frame-initial-frame-alist) |
| 169 | (setq frame-initial-frame-alist |
| 170 | (cons '(vertical-scroll-bars . t) |
| 171 | frame-initial-frame-alist))) |
| 172 | (or (assq 'horizontal-scroll-bars frame-initial-frame-alist) |
| 173 | (setq frame-initial-frame-alist |
| 174 | (cons '(horizontal-scroll-bars . t) |
| 175 | frame-initial-frame-alist))) |
| 176 | (setq default-minibuffer-frame |
| 177 | (setq frame-initial-frame |
| 178 | (make-frame initial-frame-alist))) |
| 179 | ;; Delete any specifications for window geometry parameters |
| 180 | ;; so that we won't reapply them in frame-notice-user-settings. |
| 181 | ;; It would be wrong to reapply them then, |
| 182 | ;; because that would override explicit user resizing. |
| 183 | (setq initial-frame-alist |
| 184 | (frame-remove-geometry-params initial-frame-alist)))) |
| 185 | ;; At this point, we know that we have a frame open, so we |
| 186 | ;; can delete the terminal frame. |
| 187 | (delete-frame terminal-frame) |
| 188 | (setq terminal-frame nil)) |
| 189 | |
| 190 | ;; No, we're not running a window system. Arrange to cause errors. |
| 191 | (setq frame-creation-function |
| 192 | (function |
| 193 | (lambda (parameters) |
| 194 | (error |
| 195 | "Can't create multiple frames without a window system")))))) |
| 196 | |
| 197 | ;;; startup.el calls this function after loading the user's init |
| 198 | ;;; file. Now default-frame-alist and initial-frame-alist contain |
| 199 | ;;; information to which we must react; do what needs to be done. |
| 200 | (defun frame-notice-user-settings () |
| 201 | |
| 202 | ;; Make menu-bar-mode and default-frame-alist consistent. |
| 203 | (let ((default (assq 'menu-bar-lines default-frame-alist))) |
| 204 | (if default |
| 205 | (setq menu-bar-mode (not (eq (cdr default) 0))) |
| 206 | (setq default-frame-alist |
| 207 | (cons (cons 'menu-bar-lines (if menu-bar-mode 1 0)) |
| 208 | default-frame-alist)))) |
| 209 | |
| 210 | ;; Creating and deleting frames may shift the selected frame around, |
| 211 | ;; and thus the current buffer. Protect against that. We don't |
| 212 | ;; want to use save-excursion here, because that may also try to set |
| 213 | ;; the buffer of the selected window, which fails when the selected |
| 214 | ;; window is the minibuffer. |
| 215 | (let ((old-buffer (current-buffer))) |
| 216 | |
| 217 | ;; If the initial frame is still around, apply initial-frame-alist |
| 218 | ;; and default-frame-alist to it. |
| 219 | (if (frame-live-p frame-initial-frame) |
| 220 | |
| 221 | ;; The initial frame we create above always has a minibuffer. |
| 222 | ;; If the user wants to remove it, or make it a minibuffer-only |
| 223 | ;; frame, then we'll have to delete the current frame and make a |
| 224 | ;; new one; you can't remove or add a root window to/from an |
| 225 | ;; existing frame. |
| 226 | ;; |
| 227 | ;; NOTE: default-frame-alist was nil when we created the |
| 228 | ;; existing frame. We need to explicitly include |
| 229 | ;; default-frame-alist in the parameters of the screen we |
| 230 | ;; create here, so that its new value, gleaned from the user's |
| 231 | ;; .emacs file, will be applied to the existing screen. |
| 232 | (if (not (eq (cdr (or (assq 'minibuffer initial-frame-alist) |
| 233 | (assq 'minibuffer default-frame-alist) |
| 234 | '(minibuffer . t))) |
| 235 | t)) |
| 236 | ;; Create the new frame. |
| 237 | (let (parms new) |
| 238 | ;; If the frame isn't visible yet, wait till it is. |
| 239 | ;; If the user has to position the window, |
| 240 | ;; Emacs doesn't know its real position until |
| 241 | ;; the frame is seen to be visible. |
| 242 | (while (not (cdr (assq 'visibility |
| 243 | (frame-parameters frame-initial-frame)))) |
| 244 | (sleep-for 1)) |
| 245 | (setq parms (append initial-frame-alist |
| 246 | default-frame-alist |
| 247 | (frame-parameters frame-initial-frame) |
| 248 | nil)) |
| 249 | ;; Get rid of `reverse', because that was handled |
| 250 | ;; when we first made the frame. |
| 251 | (setq parms (cons '(reverse) (delq (assq 'reverse parms) parms))) |
| 252 | (if (assq 'height frame-initial-geometry-arguments) |
| 253 | (setq parms (frame-delete-all 'height parms))) |
| 254 | (if (assq 'width frame-initial-geometry-arguments) |
| 255 | (setq parms (frame-delete-all 'width parms))) |
| 256 | (if (assq 'left frame-initial-geometry-arguments) |
| 257 | (setq parms (frame-delete-all 'left parms))) |
| 258 | (if (assq 'top frame-initial-geometry-arguments) |
| 259 | (setq parms (frame-delete-all 'top parms))) |
| 260 | (setq new |
| 261 | (make-frame |
| 262 | ;; Use the geometry args that created the existing |
| 263 | ;; frame, rather than the parms we get for it. |
| 264 | (append frame-initial-geometry-arguments parms))) |
| 265 | ;; The initial frame, which we are about to delete, may be |
| 266 | ;; the only frame with a minibuffer. If it is, create a |
| 267 | ;; new one. |
| 268 | (or (delq frame-initial-frame (minibuffer-frame-list)) |
| 269 | (make-frame (append minibuffer-frame-alist |
| 270 | '((minibuffer . only))))) |
| 271 | |
| 272 | ;; If the initial frame is serving as a surrogate |
| 273 | ;; minibuffer frame for any frames, we need to wean them |
| 274 | ;; onto a new frame. The default-minibuffer-frame |
| 275 | ;; variable must be handled similarly. |
| 276 | (let ((users-of-initial |
| 277 | (filtered-frame-list |
| 278 | (function (lambda (frame) |
| 279 | (and (not (eq frame frame-initial-frame)) |
| 280 | (eq (window-frame |
| 281 | (minibuffer-window frame)) |
| 282 | frame-initial-frame))))))) |
| 283 | (if (or users-of-initial |
| 284 | (eq default-minibuffer-frame frame-initial-frame)) |
| 285 | |
| 286 | ;; Choose an appropriate frame. Prefer frames which |
| 287 | ;; are only minibuffers. |
| 288 | (let* ((new-surrogate |
| 289 | (car |
| 290 | (or (filtered-frame-list |
| 291 | (function |
| 292 | (lambda (frame) |
| 293 | (eq (cdr (assq 'minibuffer |
| 294 | (frame-parameters frame))) |
| 295 | 'only)))) |
| 296 | (minibuffer-frame-list)))) |
| 297 | (new-minibuffer (minibuffer-window new-surrogate))) |
| 298 | |
| 299 | (if (eq default-minibuffer-frame frame-initial-frame) |
| 300 | (setq default-minibuffer-frame new-surrogate)) |
| 301 | |
| 302 | ;; Wean the frames using frame-initial-frame as |
| 303 | ;; their minibuffer frame. |
| 304 | (mapcar |
| 305 | (function |
| 306 | (lambda (frame) |
| 307 | (modify-frame-parameters |
| 308 | frame (list (cons 'minibuffer new-minibuffer))))) |
| 309 | users-of-initial)))) |
| 310 | |
| 311 | ;; Redirect events enqueued at this frame to the new frame. |
| 312 | ;; Is this a good idea? |
| 313 | (redirect-frame-focus frame-initial-frame new) |
| 314 | |
| 315 | ;; Finally, get rid of the old frame. |
| 316 | (delete-frame frame-initial-frame t)) |
| 317 | |
| 318 | ;; Otherwise, we don't need all that rigamarole; just apply |
| 319 | ;; the new parameters. |
| 320 | (let (newparms allparms tail) |
| 321 | (setq allparms (append initial-frame-alist |
| 322 | default-frame-alist)) |
| 323 | (if (assq 'height frame-initial-geometry-arguments) |
| 324 | (setq allparms (frame-delete-all 'height allparms))) |
| 325 | (if (assq 'width frame-initial-geometry-arguments) |
| 326 | (setq allparms (frame-delete-all 'width allparms))) |
| 327 | (if (assq 'left frame-initial-geometry-arguments) |
| 328 | (setq allparms (frame-delete-all 'left allparms))) |
| 329 | (if (assq 'top frame-initial-geometry-arguments) |
| 330 | (setq allparms (frame-delete-all 'top allparms))) |
| 331 | (setq tail allparms) |
| 332 | ;; Find just the parms that have changed since we first |
| 333 | ;; made this frame. Those are the ones actually set by |
| 334 | ;; the init file. For those parms whose values we already knew |
| 335 | ;; (such as those spec'd by command line options) |
| 336 | ;; it is undesirable to specify the parm again |
| 337 | ;; once the user has seen the frame and been able to alter it |
| 338 | ;; manually. |
| 339 | (while tail |
| 340 | (let (newval oldval) |
| 341 | (setq oldval (cdr (assq (car (car tail)) |
| 342 | frame-initial-frame-alist))) |
| 343 | (setq newval (cdr (assq (car (car tail)) allparms))) |
| 344 | (or (eq oldval newval) |
| 345 | (setq newparms |
| 346 | (cons (cons (car (car tail)) newval) newparms)))) |
| 347 | (setq tail (cdr tail))) |
| 348 | (setq newparms (nreverse newparms)) |
| 349 | (modify-frame-parameters frame-initial-frame |
| 350 | newparms) |
| 351 | (if (assq 'font newparms) |
| 352 | (frame-update-faces frame-initial-frame))))) |
| 353 | |
| 354 | ;; Restore the original buffer. |
| 355 | (set-buffer old-buffer) |
| 356 | |
| 357 | ;; Make sure the initial frame can be GC'd if it is ever deleted. |
| 358 | ;; Make sure frame-notice-user-settings does nothing if called twice. |
| 359 | (setq frame-initial-frame nil))) |
| 360 | |
| 361 | ;; Delete from ALIST all elements whose car is KEY. |
| 362 | ;; Return the modified alist. |
| 363 | (defun frame-delete-all (key alist) |
| 364 | (setq alist (copy-sequence alist)) |
| 365 | (let ((tail alist)) |
| 366 | (while tail |
| 367 | (if (eq (car (car tail)) key) |
| 368 | (setq alist (delq (car tail) alist))) |
| 369 | (setq tail (cdr tail))) |
| 370 | alist)) |
| 371 | \f |
| 372 | ;;;; Creation of additional frames, and other frame miscellanea |
| 373 | |
| 374 | ;;; Return some frame other than the current frame, creating one if |
| 375 | ;;; necessary. Note that the minibuffer frame, if separate, is not |
| 376 | ;;; considered (see next-frame). |
| 377 | (defun get-other-frame () |
| 378 | (let ((s (if (equal (next-frame (selected-frame)) (selected-frame)) |
| 379 | (make-frame) |
| 380 | (next-frame (selected-frame))))) |
| 381 | s)) |
| 382 | |
| 383 | (defun next-multiframe-window () |
| 384 | "Select the next window, regardless of which frame it is on." |
| 385 | (interactive) |
| 386 | (select-window (next-window (selected-window) |
| 387 | (> (minibuffer-depth) 0) |
| 388 | t))) |
| 389 | |
| 390 | (defun previous-multiframe-window () |
| 391 | "Select the previous window, regardless of which frame it is on." |
| 392 | (interactive) |
| 393 | (select-window (previous-window (selected-window) |
| 394 | (> (minibuffer-depth) 0) |
| 395 | t))) |
| 396 | |
| 397 | (defun make-frame-on-display (display &optional parameters) |
| 398 | "Make a frame on display DISPLAY. |
| 399 | The optional second argument PARAMETERS specifies additional frame parameters." |
| 400 | (interactive "sMake frame on display: ") |
| 401 | (make-frame (cons (cons 'display display) parameters))) |
| 402 | |
| 403 | ;; Alias, kept temporarily. |
| 404 | (defalias 'new-frame 'make-frame) |
| 405 | (defun make-frame (&optional parameters) |
| 406 | "Create a new frame, displaying the current buffer. |
| 407 | |
| 408 | Optional argument PARAMETERS is an alist of parameters for the new |
| 409 | frame. Specifically, PARAMETERS is a list of pairs, each having one |
| 410 | of the following forms: |
| 411 | |
| 412 | \(name . STRING) - The frame should be named STRING. |
| 413 | |
| 414 | \(height . NUMBER) - The frame should be NUMBER text lines high. If |
| 415 | this parameter is present, the width parameter must also be |
| 416 | given. |
| 417 | |
| 418 | \(width . NUMBER) - The frame should be NUMBER characters in width. |
| 419 | If this parameter is present, the height parameter must also |
| 420 | be given. |
| 421 | |
| 422 | \(minibuffer . t) - the frame should have a minibuffer |
| 423 | \(minibuffer . nil) - the frame should have no minibuffer |
| 424 | \(minibuffer . only) - the frame should contain only a minibuffer |
| 425 | \(minibuffer . WINDOW) - the frame should use WINDOW as its minibuffer window." |
| 426 | (interactive) |
| 427 | (let ((nframe)) |
| 428 | (run-hooks 'before-make-frame-hook) |
| 429 | (setq nframe (funcall frame-creation-function parameters)) |
| 430 | (run-hooks 'after-make-frame-hook) |
| 431 | nframe)) |
| 432 | |
| 433 | (defun filtered-frame-list (predicate) |
| 434 | "Return a list of all live frames which satisfy PREDICATE." |
| 435 | (let ((frames (frame-list)) |
| 436 | good-frames) |
| 437 | (while (consp frames) |
| 438 | (if (funcall predicate (car frames)) |
| 439 | (setq good-frames (cons (car frames) good-frames))) |
| 440 | (setq frames (cdr frames))) |
| 441 | good-frames)) |
| 442 | |
| 443 | (defun minibuffer-frame-list () |
| 444 | "Return a list of all frames with their own minibuffers." |
| 445 | (filtered-frame-list |
| 446 | (function (lambda (frame) |
| 447 | (eq frame (window-frame (minibuffer-window frame))))))) |
| 448 | |
| 449 | (defun frame-remove-geometry-params (param-list) |
| 450 | "Return the parameter list PARAM-LIST, but with geometry specs removed. |
| 451 | This deletes all bindings in PARAM-LIST for `top', `left', `width', |
| 452 | `height', `user-size' and `user-position' parameters. |
| 453 | Emacs uses this to avoid overriding explicit moves and resizings from |
| 454 | the user during startup." |
| 455 | (setq param-list (cons nil param-list)) |
| 456 | (let ((tail param-list)) |
| 457 | (while (consp (cdr tail)) |
| 458 | (if (and (consp (car (cdr tail))) |
| 459 | (memq (car (car (cdr tail))) |
| 460 | '(height width top left user-position user-size))) |
| 461 | (progn |
| 462 | (setq frame-initial-geometry-arguments |
| 463 | (cons (car (cdr tail)) frame-initial-geometry-arguments)) |
| 464 | (setcdr tail (cdr (cdr tail)))) |
| 465 | (setq tail (cdr tail))))) |
| 466 | (setq frame-initial-geometry-arguments |
| 467 | (nreverse frame-initial-geometry-arguments)) |
| 468 | (cdr param-list)) |
| 469 | |
| 470 | |
| 471 | (defun other-frame (arg) |
| 472 | "Select the ARG'th different visible frame, and raise it. |
| 473 | All frames are arranged in a cyclic order. |
| 474 | This command selects the frame ARG steps away in that order. |
| 475 | A negative ARG moves in the opposite order." |
| 476 | (interactive "p") |
| 477 | (let ((frame (selected-frame))) |
| 478 | (while (> arg 0) |
| 479 | (setq frame (next-frame frame)) |
| 480 | (while (not (eq (frame-visible-p frame) t)) |
| 481 | (setq frame (next-frame frame))) |
| 482 | (setq arg (1- arg))) |
| 483 | (while (< arg 0) |
| 484 | (setq frame (previous-frame frame)) |
| 485 | (while (not (eq (frame-visible-p frame) t)) |
| 486 | (setq frame (previous-frame frame))) |
| 487 | (setq arg (1+ arg))) |
| 488 | (raise-frame frame) |
| 489 | (select-frame frame) |
| 490 | (set-mouse-position (selected-frame) (1- (frame-width)) 0) |
| 491 | (unfocus-frame))) |
| 492 | \f |
| 493 | ;;;; Frame configurations |
| 494 | |
| 495 | (defun current-frame-configuration () |
| 496 | "Return a list describing the positions and states of all frames. |
| 497 | Its car is `frame-configuration'. |
| 498 | Each element of the cdr is a list of the form (FRAME ALIST WINDOW-CONFIG), |
| 499 | where |
| 500 | FRAME is a frame object, |
| 501 | ALIST is an association list specifying some of FRAME's parameters, and |
| 502 | WINDOW-CONFIG is a window configuration object for FRAME." |
| 503 | (cons 'frame-configuration |
| 504 | (mapcar (function |
| 505 | (lambda (frame) |
| 506 | (list frame |
| 507 | (frame-parameters frame) |
| 508 | (current-window-configuration frame)))) |
| 509 | (frame-list)))) |
| 510 | |
| 511 | (defun set-frame-configuration (configuration &optional nodelete) |
| 512 | "Restore the frames to the state described by CONFIGURATION. |
| 513 | Each frame listed in CONFIGURATION has its position, size, window |
| 514 | configuration, and other parameters set as specified in CONFIGURATION. |
| 515 | Ordinarily, this function deletes all existing frames not |
| 516 | listed in CONFIGURATION. But if optional second argument NODELETE |
| 517 | is given and non-nil, the unwanted frames are iconified instead." |
| 518 | (or (frame-configuration-p configuration) |
| 519 | (signal 'wrong-type-argument |
| 520 | (list 'frame-configuration-p configuration))) |
| 521 | (let ((config-alist (cdr configuration)) |
| 522 | frames-to-delete) |
| 523 | (mapcar (function |
| 524 | (lambda (frame) |
| 525 | (let ((parameters (assq frame config-alist))) |
| 526 | (if parameters |
| 527 | (progn |
| 528 | (modify-frame-parameters |
| 529 | frame |
| 530 | ;; Since we can't set a frame's minibuffer status, |
| 531 | ;; we might as well omit the parameter altogether. |
| 532 | (let* ((parms (nth 1 parameters)) |
| 533 | (mini (assq 'minibuffer parms))) |
| 534 | (if mini (setq parms (delq mini parms))) |
| 535 | parms)) |
| 536 | (set-window-configuration (nth 2 parameters))) |
| 537 | (setq frames-to-delete (cons frame frames-to-delete)))))) |
| 538 | (frame-list)) |
| 539 | (if nodelete |
| 540 | ;; Note: making frames invisible here was tried |
| 541 | ;; but led to some strange behavior--each time the frame |
| 542 | ;; was made visible again, the window manager asked afresh |
| 543 | ;; for where to put it. |
| 544 | (mapcar 'iconify-frame frames-to-delete) |
| 545 | (mapcar 'delete-frame frames-to-delete)))) |
| 546 | |
| 547 | (defun frame-configuration-p (object) |
| 548 | "Return non-nil if OBJECT seems to be a frame configuration. |
| 549 | Any list whose car is `frame-configuration' is assumed to be a frame |
| 550 | configuration." |
| 551 | (and (consp object) |
| 552 | (eq (car object) 'frame-configuration))) |
| 553 | |
| 554 | \f |
| 555 | ;;;; Convenience functions for accessing and interactively changing |
| 556 | ;;;; frame parameters. |
| 557 | |
| 558 | (defun frame-height (&optional frame) |
| 559 | "Return number of lines available for display on FRAME. |
| 560 | If FRAME is omitted, describe the currently selected frame." |
| 561 | (cdr (assq 'height (frame-parameters frame)))) |
| 562 | |
| 563 | (defun frame-width (&optional frame) |
| 564 | "Return number of columns available for display on FRAME. |
| 565 | If FRAME is omitted, describe the currently selected frame." |
| 566 | (cdr (assq 'width (frame-parameters frame)))) |
| 567 | |
| 568 | (defun set-default-font (font-name) |
| 569 | "Set the font of the selected frame to FONT. |
| 570 | When called interactively, prompt for the name of the font to use." |
| 571 | (interactive "sFont name: ") |
| 572 | (modify-frame-parameters (selected-frame) |
| 573 | (list (cons 'font font-name))) |
| 574 | ;; Update faces that want a bold or italic version of the default font. |
| 575 | (frame-update-faces (selected-frame))) |
| 576 | |
| 577 | (defun set-background-color (color-name) |
| 578 | "Set the background color of the selected frame to COLOR. |
| 579 | When called interactively, prompt for the name of the color to use." |
| 580 | (interactive "sColor: ") |
| 581 | (modify-frame-parameters (selected-frame) |
| 582 | (list (cons 'background-color color-name))) |
| 583 | (frame-update-face-colors (selected-frame))) |
| 584 | |
| 585 | (defun set-foreground-color (color-name) |
| 586 | "Set the foreground color of the selected frame to COLOR. |
| 587 | When called interactively, prompt for the name of the color to use." |
| 588 | (interactive "sColor: ") |
| 589 | (modify-frame-parameters (selected-frame) |
| 590 | (list (cons 'foreground-color color-name))) |
| 591 | (frame-update-face-colors (selected-frame))) |
| 592 | |
| 593 | (defun set-cursor-color (color-name) |
| 594 | "Set the text cursor color of the selected frame to COLOR. |
| 595 | When called interactively, prompt for the name of the color to use." |
| 596 | (interactive "sColor: ") |
| 597 | (modify-frame-parameters (selected-frame) |
| 598 | (list (cons 'cursor-color color-name)))) |
| 599 | |
| 600 | (defun set-mouse-color (color-name) |
| 601 | "Set the color of the mouse pointer of the selected frame to COLOR. |
| 602 | When called interactively, prompt for the name of the color to use." |
| 603 | (interactive "sColor: ") |
| 604 | (modify-frame-parameters (selected-frame) |
| 605 | (list (cons 'mouse-color color-name)))) |
| 606 | |
| 607 | (defun set-border-color (color-name) |
| 608 | "Set the color of the border of the selected frame to COLOR. |
| 609 | When called interactively, prompt for the name of the color to use." |
| 610 | (interactive "sColor: ") |
| 611 | (modify-frame-parameters (selected-frame) |
| 612 | (list (cons 'border-color color-name)))) |
| 613 | |
| 614 | (defun auto-raise-mode (arg) |
| 615 | "Toggle whether or not the selected frame should auto-raise. |
| 616 | With arg, turn auto-raise mode on if and only if arg is positive. |
| 617 | Note that this controls Emacs's own auto-raise feature. |
| 618 | Some window managers allow you to enable auto-raise for certain windows. |
| 619 | You can use that for Emacs windows if you wish, but if you do, |
| 620 | that is beyond the control of Emacs and this command has no effect on it." |
| 621 | (interactive "P") |
| 622 | (if (null arg) |
| 623 | (setq arg |
| 624 | (if (cdr (assq 'auto-raise (frame-parameters (selected-frame)))) |
| 625 | -1 1))) |
| 626 | (modify-frame-parameters (selected-frame) |
| 627 | (list (cons 'auto-raise (> arg 0))))) |
| 628 | |
| 629 | (defun auto-lower-mode (arg) |
| 630 | "Toggle whether or not the selected frame should auto-lower. |
| 631 | With arg, turn auto-lower mode on if and only if arg is positive. |
| 632 | Note that this controls Emacs's own auto-lower feature. |
| 633 | Some window managers allow you to enable auto-lower for certain windows. |
| 634 | You can use that for Emacs windows if you wish, but if you do, |
| 635 | that is beyond the control of Emacs and this command has no effect on it." |
| 636 | (interactive "P") |
| 637 | (if (null arg) |
| 638 | (setq arg |
| 639 | (if (cdr (assq 'auto-lower (frame-parameters (selected-frame)))) |
| 640 | -1 1))) |
| 641 | (modify-frame-parameters (selected-frame) |
| 642 | (list (cons 'auto-lower (> arg 0))))) |
| 643 | |
| 644 | (defun toggle-scroll-bar (arg) |
| 645 | "Toggle whether or not the selected frame has vertical scroll bars. |
| 646 | With arg, turn vertical scroll bars on if and only if arg is positive." |
| 647 | (interactive "P") |
| 648 | (if (null arg) |
| 649 | (setq arg |
| 650 | (if (cdr (assq 'vertical-scroll-bars |
| 651 | (frame-parameters (selected-frame)))) |
| 652 | -1 1))) |
| 653 | (modify-frame-parameters (selected-frame) |
| 654 | (list (cons 'vertical-scroll-bars (> arg 0))))) |
| 655 | |
| 656 | (defun toggle-horizontal-scroll-bar (arg) |
| 657 | "Toggle whether or not the selected frame has horizontal scroll bars. |
| 658 | With arg, turn horizontal scroll bars on if and only if arg is positive. |
| 659 | Horizontal scroll bars aren't implemented yet." |
| 660 | (interactive "P") |
| 661 | (error "Horizontal scroll bars aren't implemented yet")) |
| 662 | |
| 663 | \f |
| 664 | ;;;; Aliases for backward compatibility with Emacs 18. |
| 665 | (defalias 'screen-height 'frame-height) |
| 666 | (defalias 'screen-width 'frame-width) |
| 667 | |
| 668 | (defun set-screen-width (cols &optional pretend) |
| 669 | "Obsolete function to change the size of the screen to COLS columns.\n\ |
| 670 | Optional second arg non-nil means that redisplay should use COLS columns\n\ |
| 671 | but that the idea of the actual width of the frame should not be changed.\n\ |
| 672 | This function is provided only for compatibility with Emacs 18; new code\n\ |
| 673 | should use `set-frame-width instead'." |
| 674 | (set-frame-width (selected-frame) cols pretend)) |
| 675 | |
| 676 | (defun set-screen-height (lines &optional pretend) |
| 677 | "Obsolete function to change the height of the screen to LINES lines.\n\ |
| 678 | Optional second arg non-nil means that redisplay should use LINES lines\n\ |
| 679 | but that the idea of the actual height of the screen should not be changed.\n\ |
| 680 | This function is provided only for compatibility with Emacs 18; new code\n\ |
| 681 | should use `set-frame-width' instead." |
| 682 | (set-frame-height (selected-frame) lines pretend)) |
| 683 | |
| 684 | (make-obsolete 'screen-height 'frame-height) |
| 685 | (make-obsolete 'screen-width 'frame-width) |
| 686 | (make-obsolete 'set-screen-width 'set-frame-width) |
| 687 | (make-obsolete 'set-screen-height 'set-frame-height) |
| 688 | |
| 689 | \f |
| 690 | ;;;; Key bindings |
| 691 | (defvar ctl-x-5-map (make-sparse-keymap) |
| 692 | "Keymap for frame commands.") |
| 693 | (defalias 'ctl-x-5-prefix ctl-x-5-map) |
| 694 | (define-key ctl-x-map "5" 'ctl-x-5-prefix) |
| 695 | |
| 696 | (define-key ctl-x-5-map "2" 'make-frame) |
| 697 | (define-key ctl-x-5-map "0" 'delete-frame) |
| 698 | (define-key ctl-x-5-map "o" 'other-frame) |
| 699 | |
| 700 | (provide 'frame) |
| 701 | |
| 702 | ;;; frame.el ends here |