1;;; frame.el --- multi-frame management independent of window systems 2 3;; Copyright (C) 1993, 1994, 1996, 1997, 2000, 2001, 2002, 2003, 4;; 2004, 2005, 2006, 2007 Free Software Foundation, Inc. 5 6;; Maintainer: FSF 7;; Keywords: internal 8 9;; This file is part of GNU Emacs. 10 11;; GNU Emacs is free software; you can redistribute it and/or modify 12;; it under the terms of the GNU General Public License as published by 13;; the Free Software Foundation; either version 2, or (at your option) 14;; any later version. 15 16;; GNU Emacs is distributed in the hope that it will be useful, 17;; but WITHOUT ANY WARRANTY; without even the implied warranty of 18;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 19;; GNU General Public License for more details. 20 21;; You should have received a copy of the GNU General Public License 22;; along with GNU Emacs; see the file COPYING. If not, write to the 23;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 24;; Boston, MA 02110-1301, USA. 25 26;;; Commentary: 27 28;;; Code: 29 30(defvar frame-creation-function nil 31 "Window-system dependent function to call to create a new frame. 32The window system startup file should set this to its frame creation 33function, which should take an alist of parameters as its argument.") 34 35;; The initial value given here used to ask for a minibuffer. 36;; But that's not necessary, because the default is to have one. 37;; By not specifying it here, we let an X resource specify it. 38(defcustom initial-frame-alist nil 39 "*Alist of frame parameters for creating the initial X window frame. 40You can set this in your `.emacs' file; for example, 41 (setq initial-frame-alist '((top . 1) (left . 1) (width . 80) (height . 55))) 42Parameters specified here supersede the values given in `default-frame-alist'. 43 44If the value calls for a frame without a minibuffer, and you have not created 45a minibuffer frame on your own, one is created according to 46`minibuffer-frame-alist'. 47 48You can specify geometry-related options for just the initial frame 49by setting this variable in your `.emacs' file; however, they won't 50take effect until Emacs reads `.emacs', which happens after first creating 51the frame. If you want the frame to have the proper geometry as soon 52as it appears, you need to use this three-step process: 53* Specify X resources to give the geometry you want. 54* Set `default-frame-alist' to override these options so that they 55 don't affect subsequent frames. 56* Set `initial-frame-alist' in a way that matches the X resources, 57 to override what you put in `default-frame-alist'." 58 :type '(repeat (cons :format "%v" 59 (symbol :tag "Parameter") 60 (sexp :tag "Value"))) 61 :group 'frames) 62 63(defcustom minibuffer-frame-alist '((width . 80) (height . 2)) 64 "*Alist of frame parameters for initially creating a minibuffer frame. 65You can set this in your `.emacs' file; for example, 66 (setq minibuffer-frame-alist 67 '((top . 1) (left . 1) (width . 80) (height . 2))) 68Parameters specified here supersede the values given in 69`default-frame-alist', for a minibuffer frame." 70 :type '(repeat (cons :format "%v" 71 (symbol :tag "Parameter") 72 (sexp :tag "Value"))) 73 :group 'frames) 74 75(defcustom pop-up-frame-alist nil 76 "*Alist of frame parameters used when creating pop-up frames. 77Pop-up frames are used for completions, help, and the like. 78This variable can be set in your init file, like this: 79 (setq pop-up-frame-alist '((width . 80) (height . 20))) 80These supersede the values given in `default-frame-alist', 81for pop-up frames." 82 :type '(repeat (cons :format "%v" 83 (symbol :tag "Parameter") 84 (sexp :tag "Value"))) 85 :group 'frames) 86 87(setq pop-up-frame-function 88 ;; Using `function' here caused some sort of problem. 89 '(lambda () 90 (make-frame pop-up-frame-alist))) 91 92(defcustom special-display-frame-alist 93 '((height . 14) (width . 80) (unsplittable . t)) 94 "*Alist of frame parameters used when creating special frames. 95Special frames are used for buffers whose names are in 96`special-display-buffer-names' and for buffers whose names match 97one of the regular expressions in `special-display-regexps'. 98This variable can be set in your init file, like this: 99 (setq special-display-frame-alist '((width . 80) (height . 20))) 100These supersede the values given in `default-frame-alist'." 101 :type '(repeat (cons :format "%v" 102 (symbol :tag "Parameter") 103 (sexp :tag "Value"))) 104 :group 'frames) 105 106(defun special-display-popup-frame (buffer &optional args) 107 "Display BUFFER in its own frame, reusing an existing window if any. 108Return the window chosen. 109Currently we do not insist on selecting the window within its frame. 110If ARGS is an alist, use it as a list of frame parameter specs. 111If ARGS is a list whose car is a symbol, 112use (car ARGS) as a function to do the work. 113Pass it BUFFER as first arg, and (cdr ARGS) gives the rest of the args." 114 (if (and args (symbolp (car args))) 115 (apply (car args) buffer (cdr args)) 116 (let ((window (get-buffer-window buffer 0))) 117 (or 118 ;; If we have a window already, make it visible. 119 (when window 120 (let ((frame (window-frame window))) 121 (make-frame-visible frame) 122 (raise-frame frame) 123 window)) 124 ;; Reuse the current window if the user requested it. 125 (when (cdr (assq 'same-window args)) 126 (condition-case nil 127 (progn (switch-to-buffer buffer) (selected-window)) 128 (error nil))) 129 ;; Stay on the same frame if requested. 130 (when (or (cdr (assq 'same-frame args)) (cdr (assq 'same-window args))) 131 (let* ((pop-up-frames nil) (pop-up-windows t) 132 special-display-regexps special-display-buffer-names 133 (window (display-buffer buffer))) 134 ;; Only do it if this is a new window: 135 ;; (set-window-dedicated-p window t) 136 window)) 137 ;; If no window yet, make one in a new frame. 138 (let ((frame 139 (with-current-buffer buffer 140 (make-frame (append args special-display-frame-alist))))) 141 (set-window-buffer (frame-selected-window frame) buffer) 142 (set-window-dedicated-p (frame-selected-window frame) t) 143 (frame-selected-window frame)))))) 144 145(defun handle-delete-frame (event) 146 "Handle delete-frame events from the X server." 147 (interactive "e") 148 (let ((frame (posn-window (event-start event))) 149 (i 0) 150 (tail (frame-list))) 151 (while tail 152 (and (frame-visible-p (car tail)) 153 (not (eq (car tail) frame)) 154 (setq i (1+ i))) 155 (setq tail (cdr tail))) 156 (if (> i 0) 157 (delete-frame frame t) 158 ;; Gildea@x.org says it is ok to ask questions before terminating. 159 (save-buffers-kill-emacs)))) 160 161;;;; Arrangement of frames at startup 162 163;; 1) Load the window system startup file from the lisp library and read the 164;; high-priority arguments (-q and the like). The window system startup 165;; file should create any frames specified in the window system defaults. 166;; 167;; 2) If no frames have been opened, we open an initial text frame. 168;; 169;; 3) Once the init file is done, we apply any newly set parameters 170;; in initial-frame-alist to the frame. 171 172;; These are now called explicitly at the proper times, 173;; since that is easier to understand. 174;; Actually using hooks within Emacs is bad for future maintenance. --rms. 175;; (add-hook 'before-init-hook 'frame-initialize) 176;; (add-hook 'window-setup-hook 'frame-notice-user-settings) 177 178;; If we create the initial frame, this is it. 179(defvar frame-initial-frame nil) 180 181;; Record the parameters used in frame-initialize to make the initial frame. 182(defvar frame-initial-frame-alist) 183 184(defvar frame-initial-geometry-arguments nil) 185 186;; startup.el calls this function before loading the user's init 187;; file - if there is no frame with a minibuffer open now, create 188;; one to display messages while loading the init file. 189(defun frame-initialize () 190 "Create an initial frame if necessary." 191 ;; Are we actually running under a window system at all? 192 (if (and window-system (not noninteractive) (not (eq window-system 'pc))) 193 (progn 194 ;; Turn on special-display processing only if there's a window system. 195 (setq special-display-function 'special-display-popup-frame) 196 197 ;; If there is no frame with a minibuffer besides the terminal 198 ;; frame, then we need to create the opening frame. Make sure 199 ;; it has a minibuffer, but let initial-frame-alist omit the 200 ;; minibuffer spec. 201 (or (delq terminal-frame (minibuffer-frame-list)) 202 (progn 203 (setq frame-initial-frame-alist 204 (append initial-frame-alist default-frame-alist nil)) 205 (or (assq 'horizontal-scroll-bars frame-initial-frame-alist) 206 (setq frame-initial-frame-alist 207 (cons '(horizontal-scroll-bars . t) 208 frame-initial-frame-alist))) 209 (setq default-minibuffer-frame 210 (setq frame-initial-frame 211 (make-frame frame-initial-frame-alist))) 212 ;; Delete any specifications for window geometry parameters 213 ;; so that we won't reapply them in frame-notice-user-settings. 214 ;; It would be wrong to reapply them then, 215 ;; because that would override explicit user resizing. 216 (setq initial-frame-alist 217 (frame-remove-geometry-params initial-frame-alist)))) 218 ;; At this point, we know that we have a frame open, so we 219 ;; can delete the terminal frame. 220 (delete-frame terminal-frame) 221 (setq terminal-frame nil)) 222 223 ;; No, we're not running a window system. Use make-terminal-frame if 224 ;; we support that feature, otherwise arrange to cause errors. 225 (or (eq window-system 'pc) 226 (setq frame-creation-function 227 (if (fboundp 'tty-create-frame-with-faces) 228 'tty-create-frame-with-faces 229 (function 230 (lambda (parameters) 231 (error 232 "Can't create multiple frames without a window system")))))))) 233 234(defvar frame-notice-user-settings t 235 "Non-nil means function `frame-notice-user-settings' wasn't run yet.") 236 237;; startup.el calls this function after loading the user's init 238;; file. Now default-frame-alist and initial-frame-alist contain 239;; information to which we must react; do what needs to be done. 240(defun frame-notice-user-settings () 241 "Act on user's init file settings of frame parameters. 242React to settings of `default-frame-alist', `initial-frame-alist' there." 243 ;; Make menu-bar-mode and default-frame-alist consistent. 244 (when (boundp 'menu-bar-mode) 245 (let ((default (assq 'menu-bar-lines default-frame-alist))) 246 (if default 247 (setq menu-bar-mode (not (eq (cdr default) 0))) 248 (setq default-frame-alist 249 (cons (cons 'menu-bar-lines (if menu-bar-mode 1 0)) 250 default-frame-alist))))) 251 252 ;; Make tool-bar-mode and default-frame-alist consistent. Don't do 253 ;; it in batch mode since that would leave a tool-bar-lines 254 ;; parameter in default-frame-alist in a dumped Emacs, which is not 255 ;; what we want. 256 (when (and (boundp 'tool-bar-mode) 257 (not noninteractive)) 258 (let ((default (assq 'tool-bar-lines default-frame-alist))) 259 (if default 260 (setq tool-bar-mode (not (eq (cdr default) 0))) 261 (setq default-frame-alist 262 (cons (cons 'tool-bar-lines (if tool-bar-mode 1 0)) 263 default-frame-alist))))) 264 265 ;; Creating and deleting frames may shift the selected frame around, 266 ;; and thus the current buffer. Protect against that. We don't 267 ;; want to use save-excursion here, because that may also try to set 268 ;; the buffer of the selected window, which fails when the selected 269 ;; window is the minibuffer. 270 (let ((old-buffer (current-buffer))) 271 272 (when (and frame-notice-user-settings 273 (null frame-initial-frame)) 274 ;; This case happens when we don't have a window system, and 275 ;; also for MS-DOS frames. 276 (let ((parms (frame-parameters frame-initial-frame))) 277 ;; Don't change the frame names. 278 (setq parms (delq (assq 'name parms) parms)) 279 ;; Can't modify the minibuffer parameter, so don't try. 280 (setq parms (delq (assq 'minibuffer parms) parms)) 281 (modify-frame-parameters nil 282 (if (null window-system) 283 (append initial-frame-alist 284 default-frame-alist 285 parms 286 nil) 287 ;; initial-frame-alist and 288 ;; default-frame-alist were already 289 ;; applied in pc-win.el. 290 parms)) 291 (if (null window-system) ;; MS-DOS does this differently in pc-win.el 292 (let ((newparms (frame-parameters)) 293 (frame (selected-frame))) 294 (tty-handle-reverse-video frame newparms) 295 ;; If we changed the background color, we need to update 296 ;; the background-mode parameter, and maybe some faces, 297 ;; too. 298 (when (assq 'background-color newparms) 299 (unless (or (assq 'background-mode initial-frame-alist) 300 (assq 'background-mode default-frame-alist)) 301 (frame-set-background-mode frame)) 302 (face-set-after-frame-default frame)))))) 303 304 ;; If the initial frame is still around, apply initial-frame-alist 305 ;; and default-frame-alist to it. 306 (when (frame-live-p frame-initial-frame) 307 308 ;; When tool-bar has been switched off, correct the frame size 309 ;; by the lines added in x-create-frame for the tool-bar and 310 ;; switch `tool-bar-mode' off. 311 (when (display-graphic-p) 312 (let ((tool-bar-lines (or (assq 'tool-bar-lines initial-frame-alist) 313 (assq 'tool-bar-lines default-frame-alist)))) 314 (when (and tool-bar-originally-present 315 (or (null tool-bar-lines) 316 (null (cdr tool-bar-lines)) 317 (eq 0 (cdr tool-bar-lines)))) 318 (let* ((char-height (frame-char-height frame-initial-frame)) 319 (image-height tool-bar-images-pixel-height) 320 (margin (cond ((and (consp tool-bar-button-margin) 321 (integerp (cdr tool-bar-button-margin)) 322 (> tool-bar-button-margin 0)) 323 (cdr tool-bar-button-margin)) 324 ((and (integerp tool-bar-button-margin) 325 (> tool-bar-button-margin 0)) 326 tool-bar-button-margin) 327 (t 0))) 328 (relief (if (and (integerp tool-bar-button-relief) 329 (> tool-bar-button-relief 0)) 330 tool-bar-button-relief 3)) 331 (lines (/ (+ image-height 332 (* 2 margin) 333 (* 2 relief) 334 (1- char-height)) 335 char-height)) 336 (height (frame-parameter frame-initial-frame 'height)) 337 (newparms (list (cons 'height (- height lines)))) 338 (initial-top (cdr (assq 'top 339 frame-initial-geometry-arguments))) 340 (top (frame-parameter frame-initial-frame 'top))) 341 (when (and (consp initial-top) (eq '- (car initial-top))) 342 (let ((adjusted-top 343 (cond ((and (consp top) 344 (eq '+ (car top))) 345 (list '+ 346 (+ (cadr top) 347 (* lines char-height)))) 348 ((and (consp top) 349 (eq '- (car top))) 350 (list '- 351 (- (cadr top) 352 (* lines char-height)))) 353 (t (+ top (* lines char-height)))))) 354 (setq newparms 355 (append newparms 356 `((top . ,adjusted-top)) 357 nil)))) 358 (modify-frame-parameters frame-initial-frame newparms) 359 (tool-bar-mode -1))))) 360 361 ;; The initial frame we create above always has a minibuffer. 362 ;; If the user wants to remove it, or make it a minibuffer-only 363 ;; frame, then we'll have to delete the current frame and make a 364 ;; new one; you can't remove or add a root window to/from an 365 ;; existing frame. 366 ;; 367 ;; NOTE: default-frame-alist was nil when we created the 368 ;; existing frame. We need to explicitly include 369 ;; default-frame-alist in the parameters of the screen we 370 ;; create here, so that its new value, gleaned from the user's 371 ;; .emacs file, will be applied to the existing screen. 372 (if (not (eq (cdr (or (assq 'minibuffer initial-frame-alist) 373 (assq 'minibuffer default-frame-alist) 374 '(minibuffer . t))) 375 t)) 376 ;; Create the new frame. 377 (let (parms new) 378 ;; If the frame isn't visible yet, wait till it is. 379 ;; If the user has to position the window, 380 ;; Emacs doesn't know its real position until 381 ;; the frame is seen to be visible. 382 (while (not (cdr (assq 'visibility 383 (frame-parameters frame-initial-frame)))) 384 (sleep-for 1)) 385 (setq parms (frame-parameters frame-initial-frame)) 386 387 ;; Get rid of `name' unless it was specified explicitly before. 388 (or (assq 'name frame-initial-frame-alist) 389 (setq parms (delq (assq 'name parms) parms))) 390 391 (setq parms (append initial-frame-alist 392 default-frame-alist 393 parms 394 nil)) 395 396 ;; Get rid of `reverse', because that was handled 397 ;; when we first made the frame. 398 (setq parms (cons '(reverse) (delq (assq 'reverse parms) parms))) 399 400 (if (assq 'height frame-initial-geometry-arguments) 401 (setq parms (assq-delete-all 'height parms))) 402 (if (assq 'width frame-initial-geometry-arguments) 403 (setq parms (assq-delete-all 'width parms))) 404 (if (assq 'left frame-initial-geometry-arguments) 405 (setq parms (assq-delete-all 'left parms))) 406 (if (assq 'top frame-initial-geometry-arguments) 407 (setq parms (assq-delete-all 'top parms))) 408 (setq new 409 (make-frame 410 ;; Use the geometry args that created the existing 411 ;; frame, rather than the parms we get for it. 412 (append frame-initial-geometry-arguments 413 '((user-size . t) (user-position . t)) 414 parms))) 415 ;; The initial frame, which we are about to delete, may be 416 ;; the only frame with a minibuffer. If it is, create a 417 ;; new one. 418 (or (delq frame-initial-frame (minibuffer-frame-list)) 419 (make-initial-minibuffer-frame nil)) 420 421 ;; If the initial frame is serving as a surrogate 422 ;; minibuffer frame for any frames, we need to wean them 423 ;; onto a new frame. The default-minibuffer-frame 424 ;; variable must be handled similarly. 425 (let ((users-of-initial 426 (filtered-frame-list 427 (function (lambda (frame) 428 (and (not (eq frame frame-initial-frame)) 429 (eq (window-frame 430 (minibuffer-window frame)) 431 frame-initial-frame))))))) 432 (if (or users-of-initial 433 (eq default-minibuffer-frame frame-initial-frame)) 434 435 ;; Choose an appropriate frame. Prefer frames which 436 ;; are only minibuffers. 437 (let* ((new-surrogate 438 (car 439 (or (filtered-frame-list 440 (function 441 (lambda (frame) 442 (eq (cdr (assq 'minibuffer 443 (frame-parameters frame))) 444 'only)))) 445 (minibuffer-frame-list)))) 446 (new-minibuffer (minibuffer-window new-surrogate))) 447 448 (if (eq default-minibuffer-frame frame-initial-frame) 449 (setq default-minibuffer-frame new-surrogate)) 450 451 ;; Wean the frames using frame-initial-frame as 452 ;; their minibuffer frame. 453 (mapcar 454 (function 455 (lambda (frame) 456 (modify-frame-parameters 457 frame (list (cons 'minibuffer new-minibuffer))))) 458 users-of-initial)))) 459 460 ;; Redirect events enqueued at this frame to the new frame. 461 ;; Is this a good idea? 462 (redirect-frame-focus frame-initial-frame new) 463 464 ;; Finally, get rid of the old frame. 465 (delete-frame frame-initial-frame t)) 466 467 ;; Otherwise, we don't need all that rigamarole; just apply 468 ;; the new parameters. 469 (let (newparms allparms tail) 470 (setq allparms (append initial-frame-alist 471 default-frame-alist nil)) 472 (if (assq 'height frame-initial-geometry-arguments) 473 (setq allparms (assq-delete-all 'height allparms))) 474 (if (assq 'width frame-initial-geometry-arguments) 475 (setq allparms (assq-delete-all 'width allparms))) 476 (if (assq 'left frame-initial-geometry-arguments) 477 (setq allparms (assq-delete-all 'left allparms))) 478 (if (assq 'top frame-initial-geometry-arguments) 479 (setq allparms (assq-delete-all 'top allparms))) 480 (setq tail allparms) 481 ;; Find just the parms that have changed since we first 482 ;; made this frame. Those are the ones actually set by 483 ;; the init file. For those parms whose values we already knew 484 ;; (such as those spec'd by command line options) 485 ;; it is undesirable to specify the parm again 486 ;; once the user has seen the frame and been able to alter it 487 ;; manually. 488 (while tail 489 (let (newval oldval) 490 (setq oldval (assq (car (car tail)) 491 frame-initial-frame-alist)) 492 (setq newval (cdr (assq (car (car tail)) allparms))) 493 (or (and oldval (eq (cdr oldval) newval)) 494 (setq newparms 495 (cons (cons (car (car tail)) newval) newparms)))) 496 (setq tail (cdr tail))) 497 (setq newparms (nreverse newparms)) 498 (modify-frame-parameters frame-initial-frame 499 newparms) 500 ;; If we changed the background color, 501 ;; we need to update the background-mode parameter 502 ;; and maybe some faces too. 503 (when (assq 'background-color newparms) 504 (unless (assq 'background-mode newparms) 505 (frame-set-background-mode frame-initial-frame)) 506 (face-set-after-frame-default frame-initial-frame))))) 507 508 ;; Restore the original buffer. 509 (set-buffer old-buffer) 510 511 ;; Make sure the initial frame can be GC'd if it is ever deleted. 512 ;; Make sure frame-notice-user-settings does nothing if called twice. 513 (setq frame-notice-user-settings nil) 514 (setq frame-initial-frame nil))) 515 516(defun make-initial-minibuffer-frame (display) 517 (let ((parms (append minibuffer-frame-alist '((minibuffer . only))))) 518 (if display 519 (make-frame-on-display display parms) 520 (make-frame parms)))) 521 522;;;; Creation of additional frames, and other frame miscellanea 523 524(defun modify-all-frames-parameters (alist) 525 "Modify all current and future frames' parameters according to ALIST. 526This changes `default-frame-alist' and possibly `initial-frame-alist'. 527See help of `modify-frame-parameters' for more information." 528 (let (element) ;; temp 529 (dolist (frame (frame-list)) 530 (modify-frame-parameters frame alist)) 531 532 (dolist (pair alist) ;; conses to add/replace 533 ;; initial-frame-alist needs setting only when 534 ;; frame-notice-user-settings is true 535 (and frame-notice-user-settings 536 (setq element (assoc (car pair) initial-frame-alist)) 537 (setq initial-frame-alist (delq element initial-frame-alist))) 538 (and (setq element (assoc (car pair) default-frame-alist)) 539 (setq default-frame-alist (delq element default-frame-alist))))) 540 (and frame-notice-user-settings 541 (setq initial-frame-alist (append initial-frame-alist alist))) 542 (setq default-frame-alist (append default-frame-alist alist))) 543 544(defun get-other-frame () 545 "Return some frame other than the current frame. 546Create one if necessary. Note that the minibuffer frame, if separate, 547is not considered (see `next-frame')." 548 (let ((s (if (equal (next-frame (selected-frame)) (selected-frame)) 549 (make-frame) 550 (next-frame (selected-frame))))) 551 s)) 552 553(defun next-multiframe-window () 554 "Select the next window, regardless of which frame it is on." 555 (interactive) 556 (select-window (next-window (selected-window) 557 (> (minibuffer-depth) 0) 558 0)) 559 (select-frame-set-input-focus (selected-frame))) 560 561(defun previous-multiframe-window () 562 "Select the previous window, regardless of which frame it is on." 563 (interactive) 564 (select-window (previous-window (selected-window) 565 (> (minibuffer-depth) 0) 566 0)) 567 (select-frame-set-input-focus (selected-frame))) 568 569(defun make-frame-on-display (display &optional parameters) 570 "Make a frame on display DISPLAY. 571The optional second argument PARAMETERS specifies additional frame parameters." 572 (interactive "sMake frame on display: ") 573 (or (string-match "\\`[^:]*:[0-9]+\\(\\.[0-9]+\\)?\\'" display) 574 (error "Invalid display, not HOST:SERVER or HOST:SERVER.SCREEN")) 575 (make-frame (cons (cons 'display display) parameters))) 576 577(defun make-frame-command () 578 "Make a new frame, and select it if the terminal displays only one frame." 579 (interactive) 580 (if (and window-system (not (eq window-system 'pc))) 581 (make-frame) 582 (select-frame (make-frame)))) 583 584(defvar before-make-frame-hook nil 585 "Functions to run before a frame is created.") 586 587(defvar after-make-frame-functions nil 588 "Functions to run after a frame is created. 589The functions are run with one arg, the newly created frame.") 590 591(defvar after-setting-font-hook nil 592 "Functions to run after a frame's font has been changed.") 593 594;; Alias, kept temporarily. 595(define-obsolete-function-alias 'new-frame 'make-frame "22.1") 596 597(defun make-frame (&optional parameters) 598 "Return a newly created frame displaying the current buffer. 599Optional argument PARAMETERS is an alist of parameters for the new frame. 600Each element of PARAMETERS should have the form (NAME . VALUE), for example: 601 602 (name . STRING) The frame should be named STRING. 603 604 (width . NUMBER) The frame should be NUMBER characters in width. 605 (height . NUMBER) The frame should be NUMBER text lines high. 606 607You cannot specify either `width' or `height', you must use neither or both. 608 609 (minibuffer . t) The frame should have a minibuffer. 610 (minibuffer . nil) The frame should have no minibuffer. 611 (minibuffer . only) The frame should contain only a minibuffer. 612 (minibuffer . WINDOW) The frame should use WINDOW as its minibuffer window. 613 614Before the frame is created (via `frame-creation-function'), functions on the 615hook `before-make-frame-hook' are run. After the frame is created, functions 616on `after-make-frame-functions' are run with one arg, the newly created frame. 617 618This function itself does not make the new frame the selected frame. 619The previously selected frame remains selected. However, the 620window system may select the new frame for its own reasons, for 621instance if the frame appears under the mouse pointer and your 622setup is for focus to follow the pointer." 623 (interactive) 624 (run-hooks 'before-make-frame-hook) 625 (let ((frame (funcall frame-creation-function parameters))) 626 (run-hook-with-args 'after-make-frame-functions frame) 627 frame)) 628 629(defun filtered-frame-list (predicate) 630 "Return a list of all live frames which satisfy PREDICATE." 631 (let* ((frames (frame-list)) 632 (list frames)) 633 (while (consp frames) 634 (unless (funcall predicate (car frames)) 635 (setcar frames nil)) 636 (setq frames (cdr frames))) 637 (delq nil list))) 638 639(defun minibuffer-frame-list () 640 "Return a list of all frames with their own minibuffers." 641 (filtered-frame-list 642 (function (lambda (frame) 643 (eq frame (window-frame (minibuffer-window frame))))))) 644 645(defun frames-on-display-list (&optional display) 646 "Return a list of all frames on DISPLAY. 647DISPLAY is a name of a display, a string of the form HOST:SERVER.SCREEN. 648If DISPLAY is omitted or nil, it defaults to the selected frame's display." 649 (let* ((display (or display (frame-parameter nil 'display))) 650 (func #'(lambda (frame) 651 (equal (frame-parameter frame 'display) display)))) 652 (filtered-frame-list func))) 653 654(defun framep-on-display (&optional display) 655 "Return the type of frames on DISPLAY. 656DISPLAY may be a display name or a frame. If it is a frame, its type is 657returned. 658If DISPLAY is omitted or nil, it defaults to the selected frame's display. 659All frames on a given display are of the same type." 660 (or (framep display) 661 (framep (car (frames-on-display-list display))))) 662 663(defun frame-remove-geometry-params (param-list) 664 "Return the parameter list PARAM-LIST, but with geometry specs removed. 665This deletes all bindings in PARAM-LIST for `top', `left', `width', 666`height', `user-size' and `user-position' parameters. 667Emacs uses this to avoid overriding explicit moves and resizings from 668the user during startup." 669 (setq param-list (cons nil param-list)) 670 (let ((tail param-list)) 671 (while (consp (cdr tail)) 672 (if (and (consp (car (cdr tail))) 673 (memq (car (car (cdr tail))) 674 '(height width top left user-position user-size))) 675 (progn 676 (setq frame-initial-geometry-arguments 677 (cons (car (cdr tail)) frame-initial-geometry-arguments)) 678 (setcdr tail (cdr (cdr tail)))) 679 (setq tail (cdr tail))))) 680 (setq frame-initial-geometry-arguments 681 (nreverse frame-initial-geometry-arguments)) 682 (cdr param-list)) 683 684(defcustom focus-follows-mouse (not (eq window-system 'mac)) 685 "*Non-nil if window system changes focus when you move the mouse. 686You should set this variable to tell Emacs how your window manager 687handles focus, since there is no way in general for Emacs to find out 688automatically. 689 690This variable does not have any effect on MS-Windows." 691 :type 'boolean 692 :group 'frames 693 :version "20.3") 694 695(defun select-frame-set-input-focus (frame) 696 "Select FRAME, raise it, and set input focus, if possible." 697 (select-frame frame) 698 (raise-frame frame) 699 ;; Ensure, if possible, that frame gets input focus. 700 (cond ((memq window-system '(x mac)) 701 (x-focus-frame frame)) 702 ((eq window-system 'w32) 703 (w32-focus-frame frame))) 704 (cond (focus-follows-mouse 705 (set-mouse-position (selected-frame) (1- (frame-width)) 0)))) 706 707(defun other-frame (arg) 708 "Select the ARGth different visible frame on current display, and raise it. 709All frames are arranged in a cyclic order. 710This command selects the frame ARG steps away in that order. 711A negative ARG moves in the opposite order. 712 713To make this command work properly, you must tell Emacs 714how the system (or the window manager) generally handles 715focus-switching between windows. If moving the mouse onto a window 716selects it (gives it focus), set `focus-follows-mouse' to t. 717Otherwise, that variable should be nil." 718 (interactive "p") 719 (let ((frame (selected-frame))) 720 (while (> arg 0) 721 (setq frame (next-frame frame)) 722 (while (not (eq (frame-visible-p frame) t)) 723 (setq frame (next-frame frame))) 724 (setq arg (1- arg))) 725 (while (< arg 0) 726 (setq frame (previous-frame frame)) 727 (while (not (eq (frame-visible-p frame) t)) 728 (setq frame (previous-frame frame))) 729 (setq arg (1+ arg))) 730 (select-frame-set-input-focus frame))) 731 732(defun iconify-or-deiconify-frame () 733 "Iconify the selected frame, or deiconify if it's currently an icon." 734 (interactive) 735 (if (eq (cdr (assq 'visibility (frame-parameters))) t) 736 (iconify-frame) 737 (make-frame-visible))) 738 739(defun make-frame-names-alist () 740 (let* ((current-frame (selected-frame)) 741 (falist 742 (cons 743 (cons (frame-parameter current-frame 'name) current-frame) nil)) 744 (frame (next-frame nil t))) 745 (while (not (eq frame current-frame)) 746 (progn 747 (setq falist (cons (cons (frame-parameter frame 'name) frame) falist)) 748 (setq frame (next-frame frame t)))) 749 falist)) 750 751(defvar frame-name-history nil) 752(defun select-frame-by-name (name) 753 "Select the frame on the current terminal whose name is NAME and raise it. 754If there is no frame by that name, signal an error." 755 (interactive 756 (let* ((frame-names-alist (make-frame-names-alist)) 757 (default (car (car frame-names-alist))) 758 (input (completing-read 759 (format "Select Frame (default %s): " default) 760 frame-names-alist nil t nil 'frame-name-history))) 761 (if (= (length input) 0) 762 (list default) 763 (list input)))) 764 (let* ((frame-names-alist (make-frame-names-alist)) 765 (frame (cdr (assoc name frame-names-alist)))) 766 (or frame 767 (error "There is no frame named `%s'" name)) 768 (make-frame-visible frame) 769 (raise-frame frame) 770 (select-frame frame) 771 ;; Ensure, if possible, that frame gets input focus. 772 (cond ((memq window-system '(x mac)) 773 (x-focus-frame frame)) 774 ((eq window-system 'w32) 775 (w32-focus-frame frame))) 776 (when focus-follows-mouse 777 (set-mouse-position frame (1- (frame-width frame)) 0)))) 778 779;;;; Frame configurations 780 781(defun current-frame-configuration () 782 "Return a list describing the positions and states of all frames. 783Its car is `frame-configuration'. 784Each element of the cdr is a list of the form (FRAME ALIST WINDOW-CONFIG), 785where 786 FRAME is a frame object, 787 ALIST is an association list specifying some of FRAME's parameters, and 788 WINDOW-CONFIG is a window configuration object for FRAME." 789 (cons 'frame-configuration 790 (mapcar (function 791 (lambda (frame) 792 (list frame 793 (frame-parameters frame) 794 (current-window-configuration frame)))) 795 (frame-list)))) 796 797(defun set-frame-configuration (configuration &optional nodelete) 798 "Restore the frames to the state described by CONFIGURATION. 799Each frame listed in CONFIGURATION has its position, size, window 800configuration, and other parameters set as specified in CONFIGURATION. 801However, this function does not restore deleted frames. 802 803Ordinarily, this function deletes all existing frames not 804listed in CONFIGURATION. But if optional second argument NODELETE 805is given and non-nil, the unwanted frames are iconified instead." 806 (or (frame-configuration-p configuration) 807 (signal 'wrong-type-argument 808 (list 'frame-configuration-p configuration))) 809 (let ((config-alist (cdr configuration)) 810 frames-to-delete) 811 (mapcar (function 812 (lambda (frame) 813 (let ((parameters (assq frame config-alist))) 814 (if parameters 815 (progn 816 (modify-frame-parameters 817 frame 818 ;; Since we can't set a frame's minibuffer status, 819 ;; we might as well omit the parameter altogether. 820 (let* ((parms (nth 1 parameters)) 821 (mini (assq 'minibuffer parms))) 822 (if mini (setq parms (delq mini parms))) 823 parms)) 824 (set-window-configuration (nth 2 parameters))) 825 (setq frames-to-delete (cons frame frames-to-delete)))))) 826 (frame-list)) 827 (if nodelete 828 ;; Note: making frames invisible here was tried 829 ;; but led to some strange behavior--each time the frame 830 ;; was made visible again, the window manager asked afresh 831 ;; for where to put it. 832 (mapcar 'iconify-frame frames-to-delete) 833 (mapcar 'delete-frame frames-to-delete)))) 834 835;;;; Convenience functions for accessing and interactively changing 836;;;; frame parameters. 837 838(defun frame-height (&optional frame) 839 "Return number of lines available for display on FRAME. 840If FRAME is omitted, describe the currently selected frame." 841 (cdr (assq 'height (frame-parameters frame)))) 842 843(defun frame-width (&optional frame) 844 "Return number of columns available for display on FRAME. 845If FRAME is omitted, describe the currently selected frame." 846 (cdr (assq 'width (frame-parameters frame)))) 847 848(defalias 'set-default-font 'set-frame-font) 849(defun set-frame-font (font-name &optional keep-size) 850 "Set the font of the selected frame to FONT-NAME. 851When called interactively, prompt for the name of the font to use. 852To get the frame's current default font, use `frame-parameters'. 853 854The default behavior is to keep the numbers of lines and columns in 855the frame, thus may change its pixel size. If optional KEEP-SIZE is 856non-nil (interactively, prefix argument) the current frame size (in 857pixels) is kept by adjusting the numbers of the lines and columns." 858 (interactive 859 (let* ((completion-ignore-case t) 860 (font (completing-read "Font name: " 861 (mapcar #'list 862 ;; x-list-fonts will fail with an error 863 ;; if this frame doesn't support fonts. 864 (x-list-fonts "*" nil (selected-frame))) 865 nil nil nil nil 866 (frame-parameter nil 'font)))) 867 (list font current-prefix-arg))) 868 (let (fht fwd) 869 (if keep-size 870 (setq fht (* (frame-parameter nil 'height) (frame-char-height)) 871 fwd (* (frame-parameter nil 'width) (frame-char-width)))) 872 (modify-frame-parameters (selected-frame) 873 (list (cons 'font font-name))) 874 (if keep-size 875 (modify-frame-parameters 876 (selected-frame) 877 (list (cons 'height (round fht (frame-char-height))) 878 (cons 'width (round fwd (frame-char-width))))))) 879 (run-hooks 'after-setting-font-hook 'after-setting-font-hooks)) 880 881(defun set-frame-parameter (frame parameter value) 882 "Set frame parameter PARAMETER to VALUE on FRAME. 883If FRAME is nil, it defaults to the selected frame. 884See `modify-frame-parameters'." 885 (modify-frame-parameters frame (list (cons parameter value)))) 886 887(defun set-background-color (color-name) 888 "Set the background color of the selected frame to COLOR-NAME. 889When called interactively, prompt for the name of the color to use. 890To get the frame's current background color, use `frame-parameters'." 891 (interactive (list (facemenu-read-color "Background color: "))) 892 (modify-frame-parameters (selected-frame) 893 (list (cons 'background-color color-name))) 894 (or window-system 895 (face-set-after-frame-default (selected-frame)))) 896 897(defun set-foreground-color (color-name) 898 "Set the foreground color of the selected frame to COLOR-NAME. 899When called interactively, prompt for the name of the color to use. 900To get the frame's current foreground color, use `frame-parameters'." 901 (interactive (list (facemenu-read-color "Foreground color: "))) 902 (modify-frame-parameters (selected-frame) 903 (list (cons 'foreground-color color-name))) 904 (or window-system 905 (face-set-after-frame-default (selected-frame)))) 906 907(defun set-cursor-color (color-name) 908 "Set the text cursor color of the selected frame to COLOR-NAME. 909When called interactively, prompt for the name of the color to use. 910To get the frame's current cursor color, use `frame-parameters'." 911 (interactive (list (facemenu-read-color "Cursor color: "))) 912 (modify-frame-parameters (selected-frame) 913 (list (cons 'cursor-color color-name)))) 914 915(defun set-mouse-color (color-name) 916 "Set the color of the mouse pointer of the selected frame to COLOR-NAME. 917When called interactively, prompt for the name of the color to use. 918To get the frame's current mouse color, use `frame-parameters'." 919 (interactive (list (facemenu-read-color "Mouse color: "))) 920 (modify-frame-parameters (selected-frame) 921 (list (cons 'mouse-color 922 (or color-name 923 (cdr (assq 'mouse-color 924 (frame-parameters)))))))) 925 926(defun set-border-color (color-name) 927 "Set the color of the border of the selected frame to COLOR-NAME. 928When called interactively, prompt for the name of the color to use. 929To get the frame's current border color, use `frame-parameters'." 930 (interactive (list (facemenu-read-color "Border color: "))) 931 (modify-frame-parameters (selected-frame) 932 (list (cons 'border-color color-name)))) 933 934(defun auto-raise-mode (arg) 935 "Toggle whether or not the selected frame should auto-raise. 936With arg, turn auto-raise mode on if and only if arg is positive. 937Note that this controls Emacs's own auto-raise feature. 938Some window managers allow you to enable auto-raise for certain windows. 939You can use that for Emacs windows if you wish, but if you do, 940that is beyond the control of Emacs and this command has no effect on it." 941 (interactive "P") 942 (if (null arg) 943 (setq arg 944 (if (cdr (assq 'auto-raise (frame-parameters (selected-frame)))) 945 -1 1))) 946 (if (> arg 0) 947 (raise-frame (selected-frame))) 948 (modify-frame-parameters (selected-frame) 949 (list (cons 'auto-raise (> arg 0))))) 950 951(defun auto-lower-mode (arg) 952 "Toggle whether or not the selected frame should auto-lower. 953With arg, turn auto-lower mode on if and only if arg is positive. 954Note that this controls Emacs's own auto-lower feature. 955Some window managers allow you to enable auto-lower for certain windows. 956You can use that for Emacs windows if you wish, but if you do, 957that is beyond the control of Emacs and this command has no effect on it." 958 (interactive "P") 959 (if (null arg) 960 (setq arg 961 (if (cdr (assq 'auto-lower (frame-parameters (selected-frame)))) 962 -1 1))) 963 (modify-frame-parameters (selected-frame) 964 (list (cons 'auto-lower (> arg 0))))) 965(defun set-frame-name (name) 966 "Set the name of the selected frame to NAME. 967When called interactively, prompt for the name of the frame. 968The frame name is displayed on the modeline if the terminal displays only 969one frame, otherwise the name is displayed on the frame's caption bar." 970 (interactive "sFrame name: ") 971 (modify-frame-parameters (selected-frame) 972 (list (cons 'name name)))) 973 974(defun frame-current-scroll-bars (&optional frame) 975 "Return the current scroll-bar settings in frame FRAME. 976Value is a cons (VERTICAL . HORIZ0NTAL) where VERTICAL specifies the 977current location of the vertical scroll-bars (left, right, or nil), 978and HORIZONTAL specifies the current location of the horizontal scroll 979bars (top, bottom, or nil)." 980 (let ((vert (frame-parameter frame 'vertical-scroll-bars)) 981 (hor nil)) 982 (unless (memq vert '(left right nil)) 983 (setq vert default-frame-scroll-bars)) 984 (cons vert hor))) 985 986;;;; Frame/display capabilities. 987(defun display-mouse-p (&optional display) 988 "Return non-nil if DISPLAY has a mouse available. 989DISPLAY can be a display name, a frame, or nil (meaning the selected 990frame's display)." 991 (let ((frame-type (framep-on-display display))) 992 (cond 993 ((eq frame-type 'pc) 994 (msdos-mouse-p)) 995 ((eq system-type 'windows-nt) 996 (with-no-warnings 997 (> w32-num-mouse-buttons 0))) 998 ((memq frame-type '(x mac)) 999 t) ;; We assume X and Mac *always* have a pointing device 1000 (t 1001 (or (and (featurep 'xt-mouse) 1002 xterm-mouse-mode) 1003 ;; t-mouse is distributed with the GPM package. It doesn't have 1004 ;; a toggle. 1005 (featurep 't-mouse)))))) 1006 1007(defun display-popup-menus-p (&optional display) 1008 "Return non-nil if popup menus are supported on DISPLAY. 1009DISPLAY can be a display name, a frame, or nil (meaning the selected 1010frame's display). 1011Support for popup menus requires that the mouse be available." 1012 (and 1013 (let ((frame-type (framep-on-display display))) 1014 (memq frame-type '(x w32 pc mac))) 1015 (display-mouse-p display))) 1016 1017(defun display-graphic-p (&optional display) 1018 "Return non-nil if DISPLAY is a graphic display. 1019Graphical displays are those which are capable of displaying several 1020frames and several different fonts at once. This is true for displays 1021that use a window system such as X, and false for text-only terminals. 1022DISPLAY can be a display name, a frame, or nil (meaning the selected 1023frame's display)." 1024 (not (null (memq (framep-on-display display) '(x w32 mac))))) 1025 1026(defun display-images-p (&optional display) 1027 "Return non-nil if DISPLAY can display images. 1028 1029DISPLAY can be a display name, a frame, or nil (meaning the selected 1030frame's display)." 1031 (and (display-graphic-p display) 1032 (fboundp 'image-mask-p) 1033 (fboundp 'image-size))) 1034 1035(defalias 'display-multi-frame-p 'display-graphic-p) 1036(defalias 'display-multi-font-p 'display-graphic-p) 1037 1038(defun display-selections-p (&optional display) 1039 "Return non-nil if DISPLAY supports selections. 1040A selection is a way to transfer text or other data between programs 1041via special system buffers called `selection' or `cut buffer' or 1042`clipboard'. 1043DISPLAY can be a display name, a frame, or nil (meaning the selected 1044frame's display)." 1045 (let ((frame-type (framep-on-display display))) 1046 (cond 1047 ((eq frame-type 'pc) 1048 ;; MS-DOG frames support selections when Emacs runs inside 1049 ;; the Windows' DOS Box. 1050 (with-no-warnings 1051 (not (null dos-windows-version)))) 1052 ((memq frame-type '(x w32 mac)) 1053 t) ;; FIXME? 1054 (t 1055 nil)))) 1056 1057(defun display-screens (&optional display) 1058 "Return the number of screens associated with DISPLAY." 1059 (let ((frame-type (framep-on-display display))) 1060 (cond 1061 ((memq frame-type '(x w32 mac)) 1062 (x-display-screens display)) 1063 (t 1064 1)))) 1065 1066(defun display-pixel-height (&optional display) 1067 "Return the height of DISPLAY's screen in pixels. 1068For character terminals, each character counts as a single pixel." 1069 (let ((frame-type (framep-on-display display))) 1070 (cond 1071 ((memq frame-type '(x w32 mac)) 1072 (x-display-pixel-height display)) 1073 (t 1074 (frame-height (if (framep display) display (selected-frame))))))) 1075 1076(defun display-pixel-width (&optional display) 1077 "Return the width of DISPLAY's screen in pixels. 1078For character terminals, each character counts as a single pixel." 1079 (let ((frame-type (framep-on-display display))) 1080 (cond 1081 ((memq frame-type '(x w32 mac)) 1082 (x-display-pixel-width display)) 1083 (t 1084 (frame-width (if (framep display) display (selected-frame))))))) 1085 1086(defcustom display-mm-dimensions-alist nil 1087 "Alist for specifying screen dimensions in millimeters. 1088The dimensions will be used for `display-mm-height' and 1089`display-mm-width' if defined for the respective display. 1090 1091Each element of the alist has the form (display . (width . height)), 1092e.g. (\":0.0\" . (287 . 215)). 1093 1094If `display' equals t, it specifies dimensions for all graphical 1095displays not explicitely specified." 1096 :version "22.1" 1097 :type '(alist :key-type (choice (string :tag "Display name") 1098 (const :tag "Default" t)) 1099 :value-type (cons :tag "Dimensions" 1100 (integer :tag "Width") 1101 (integer :tag "Height"))) 1102 :group 'frames) 1103 1104(defun display-mm-height (&optional display) 1105 "Return the height of DISPLAY's screen in millimeters. 1106System values can be overriden by `display-mm-dimensions-alist'. 1107If the information is unavailable, value is nil." 1108 (and (memq (framep-on-display display) '(x w32 mac)) 1109 (or (cddr (assoc (or display (frame-parameter nil 'display)) 1110 display-mm-dimensions-alist)) 1111 (cddr (assoc t display-mm-dimensions-alist)) 1112 (x-display-mm-height display)))) 1113 1114(defun display-mm-width (&optional display) 1115 "Return the width of DISPLAY's screen in millimeters. 1116System values can be overriden by `display-mm-dimensions-alist'. 1117If the information is unavailable, value is nil." 1118 (and (memq (framep-on-display display) '(x w32 mac)) 1119 (or (cadr (assoc (or display (frame-parameter nil 'display)) 1120 display-mm-dimensions-alist)) 1121 (cadr (assoc t display-mm-dimensions-alist)) 1122 (x-display-mm-width display)))) 1123 1124(defun display-backing-store (&optional display) 1125 "Return the backing store capability of DISPLAY's screen. 1126The value may be `always', `when-mapped', `not-useful', or nil if 1127the question is inapplicable to a certain kind of display." 1128 (let ((frame-type (framep-on-display display))) 1129 (cond 1130 ((memq frame-type '(x w32 mac)) 1131 (x-display-backing-store display)) 1132 (t 1133 'not-useful)))) 1134 1135(defun display-save-under (&optional display) 1136 "Return non-nil if DISPLAY's screen supports the SaveUnder feature." 1137 (let ((frame-type (framep-on-display display))) 1138 (cond 1139 ((memq frame-type '(x w32 mac)) 1140 (x-display-save-under display)) 1141 (t 1142 'not-useful)))) 1143 1144(defun display-planes (&optional display) 1145 "Return the number of planes supported by DISPLAY." 1146 (let ((frame-type (framep-on-display display))) 1147 (cond 1148 ((memq frame-type '(x w32 mac)) 1149 (x-display-planes display)) 1150 ((eq frame-type 'pc) 1151 4) 1152 (t 1153 (truncate (log (length (tty-color-alist)) 2)))))) 1154 1155(defun display-color-cells (&optional display) 1156 "Return the number of color cells supported by DISPLAY." 1157 (let ((frame-type (framep-on-display display))) 1158 (cond 1159 ((memq frame-type '(x w32 mac)) 1160 (x-display-color-cells display)) 1161 ((eq frame-type 'pc) 1162 16) 1163 (t 1164 (tty-display-color-cells))))) 1165 1166(defun display-visual-class (&optional display) 1167 "Returns the visual class of DISPLAY. 1168The value is one of the symbols `static-gray', `gray-scale', 1169`static-color', `pseudo-color', `true-color', or `direct-color'." 1170 (let ((frame-type (framep-on-display display))) 1171 (cond 1172 ((memq frame-type '(x w32 mac)) 1173 (x-display-visual-class display)) 1174 ((and (memq frame-type '(pc t)) 1175 (tty-display-color-p display)) 1176 'static-color) 1177 (t 1178 'static-gray)))) 1179 1180 1181;;;; Aliases for backward compatibility with Emacs 18. 1182(define-obsolete-function-alias 'screen-height 'frame-height) ;before 19.15 1183(define-obsolete-function-alias 'screen-width 'frame-width) ;before 19.15 1184 1185(defun set-screen-width (cols &optional pretend) 1186 "Change the size of the screen to COLS columns. 1187Optional second arg non-nil means that redisplay should use COLS columns 1188but that the idea of the actual width of the frame should not be changed. 1189This function is provided only for compatibility with Emacs 18." 1190 (set-frame-width (selected-frame) cols pretend)) 1191 1192(defun set-screen-height (lines &optional pretend) 1193 "Change the height of the screen to LINES lines. 1194Optional second arg non-nil means that redisplay should use LINES lines 1195but that the idea of the actual height of the screen should not be changed. 1196This function is provided only for compatibility with Emacs 18." 1197 (set-frame-height (selected-frame) lines pretend)) 1198 1199(defun delete-other-frames (&optional frame) 1200 "Delete all frames except FRAME. 1201If FRAME uses another frame's minibuffer, the minibuffer frame is 1202left untouched. FRAME nil or omitted means use the selected frame." 1203 (interactive) 1204 (unless frame 1205 (setq frame (selected-frame))) 1206 (let* ((mini-frame (window-frame (minibuffer-window frame))) 1207 (frames (delq mini-frame (delq frame (frame-list))))) 1208 ;; Delete mon-minibuffer-only frames first, because `delete-frame' 1209 ;; signals an error when trying to delete a mini-frame that's 1210 ;; still in use by another frame. 1211 (dolist (frame frames) 1212 (unless (eq (frame-parameter frame 'minibuffer) 'only) 1213 (delete-frame frame))) 1214 ;; Delete minibuffer-only frames. 1215 (dolist (frame frames) 1216 (when (eq (frame-parameter frame 'minibuffer) 'only) 1217 (delete-frame frame))))) 1218 1219(make-obsolete 'set-screen-width 'set-frame-width) ;before 19.15 1220(make-obsolete 'set-screen-height 'set-frame-height) ;before 19.15 1221 1222;; miscellaneous obsolescence declarations 1223(define-obsolete-variable-alias 'delete-frame-hook 1224 'delete-frame-functions "22.1") 1225 1226 1227;; Highlighting trailing whitespace. 1228 1229(make-variable-buffer-local 'show-trailing-whitespace) 1230 1231(defcustom show-trailing-whitespace nil 1232 "*Non-nil means highlight trailing whitespace. 1233This is done in the face `trailing-whitespace'." 1234 :type 'boolean 1235 :group 'whitespace-faces) 1236 1237 1238 1239;; Scrolling 1240 1241(defgroup scrolling nil 1242 "Scrolling windows." 1243 :version "21.1" 1244 :group 'frames) 1245 1246(defcustom auto-hscroll-mode t 1247 "*Allow or disallow automatic scrolling windows horizontally. 1248If non-nil, windows are automatically scrolled horizontally to make 1249point visible." 1250 :version "21.1" 1251 :type 'boolean 1252 :group 'scrolling) 1253(defvaralias 'automatic-hscrolling 'auto-hscroll-mode) 1254 1255 1256;; Blinking cursor 1257 1258(defgroup cursor nil 1259 "Displaying text cursors." 1260 :version "21.1" 1261 :group 'frames) 1262 1263(defcustom blink-cursor-delay 0.5 1264 "*Seconds of idle time after which cursor starts to blink." 1265 :type 'number 1266 :group 'cursor) 1267 1268(defcustom blink-cursor-interval 0.5 1269 "*Length of cursor blink interval in seconds." 1270 :type 'number 1271 :group 'cursor) 1272 1273(defvar blink-cursor-idle-timer nil 1274 "Timer started after `blink-cursor-delay' seconds of Emacs idle time. 1275The function `blink-cursor-start' is called when the timer fires.") 1276 1277(defvar blink-cursor-timer nil 1278 "Timer started from `blink-cursor-start'. 1279This timer calls `blink-cursor-timer-function' every 1280`blink-cursor-interval' seconds.") 1281 1282(defun blink-cursor-start () 1283 "Timer function called from the timer `blink-cursor-idle-timer'. 1284This starts the timer `blink-cursor-timer', which makes the cursor blink 1285if appropriate. It also arranges to cancel that timer when the next 1286command starts, by installing a pre-command hook." 1287 (when (null blink-cursor-timer) 1288 ;; Set up the timer first, so that if this signals an error, 1289 ;; blink-cursor-end is not added to pre-command-hook. 1290 (setq blink-cursor-timer 1291 (run-with-timer blink-cursor-interval blink-cursor-interval 1292 'blink-cursor-timer-function)) 1293 (add-hook 'pre-command-hook 'blink-cursor-end) 1294 (internal-show-cursor nil nil))) 1295 1296(defun blink-cursor-timer-function () 1297 "Timer function of timer `blink-cursor-timer'." 1298 (internal-show-cursor nil (not (internal-show-cursor-p)))) 1299 1300(defun blink-cursor-end () 1301 "Stop cursor blinking. 1302This is installed as a pre-command hook by `blink-cursor-start'. 1303When run, it cancels the timer `blink-cursor-timer' and removes 1304itself as a pre-command hook." 1305 (remove-hook 'pre-command-hook 'blink-cursor-end) 1306 (internal-show-cursor nil t) 1307 (when blink-cursor-timer 1308 (cancel-timer blink-cursor-timer) 1309 (setq blink-cursor-timer nil))) 1310 1311(define-minor-mode blink-cursor-mode 1312 "Toggle blinking cursor mode. 1313With a numeric argument, turn blinking cursor mode on iff ARG is positive. 1314When blinking cursor mode is enabled, the cursor of the selected 1315window blinks. 1316 1317Note that this command is effective only when Emacs 1318displays through a window system, because then Emacs does its own 1319cursor display. On a text-only terminal, this is not implemented." 1320 :init-value (not (or noninteractive 1321 no-blinking-cursor 1322 (eq system-type 'ms-dos) 1323 (not (memq window-system '(x w32 mac))))) 1324 :initialize 'custom-initialize-safe-default 1325 :group 'cursor 1326 :global t 1327 (if blink-cursor-idle-timer (cancel-timer blink-cursor-idle-timer)) 1328 (setq blink-cursor-idle-timer nil) 1329 (blink-cursor-end) 1330 (when blink-cursor-mode 1331 ;; Hide the cursor. 1332 ;;(internal-show-cursor nil nil) 1333 (setq blink-cursor-idle-timer 1334 (run-with-idle-timer blink-cursor-delay 1335 blink-cursor-delay 1336 'blink-cursor-start)))) 1337 1338(define-obsolete-variable-alias 'blink-cursor 'blink-cursor-mode "22.1") 1339 1340;; Hourglass pointer 1341 1342(defcustom display-hourglass t 1343 "*Non-nil means show an hourglass pointer, when Emacs is busy. 1344This feature only works when on a window system that can change 1345cursor shapes." 1346 :type 'boolean 1347 :group 'cursor) 1348 1349(defcustom hourglass-delay 1 1350 "*Seconds to wait before displaying an hourglass pointer when Emacs is busy." 1351 :type 'number 1352 :group 'cursor) 1353 1354 1355(defcustom cursor-in-non-selected-windows t 1356 "*Non-nil means show a hollow box cursor in non-selected windows. 1357If nil, don't show a cursor except in the selected window. 1358Use Custom to set this variable to get the display updated." 1359 :tag "Cursor In Non-selected Windows" 1360 :type 'boolean 1361 :group 'cursor 1362 :set #'(lambda (symbol value) 1363 (set-default symbol value) 1364 (force-mode-line-update t))) 1365 1366 1367;;;; Key bindings 1368 1369(define-key ctl-x-5-map "2" 'make-frame-command) 1370(define-key ctl-x-5-map "1" 'delete-other-frames) 1371(define-key ctl-x-5-map "0" 'delete-frame) 1372(define-key ctl-x-5-map "o" 'other-frame) 1373 1374(provide 'frame) 1375 1376;; arch-tag: 82979c70-b8f2-4306-b2ad-ddbd6b328b56 1377;;; frame.el ends here 1378