x-win.el 18.4 KB
Newer Older
Eric S. Raymond's avatar
Eric S. Raymond committed
1
;;; x-win.el --- parse switches controlling interface with X window system
Richard M. Stallman's avatar
Richard M. Stallman committed
2
;; Copyright (C) 1993 Free Software Foundation, Inc.
Eric S. Raymond's avatar
Eric S. Raymond committed
3 4 5 6

;; Author: FSF
;; Keywords: terminals

Richard M. Stallman's avatar
Richard M. Stallman committed
7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
;;; This file is part of GNU Emacs.
;;;
;;; GNU Emacs is free software; you can redistribute it and/or modify
;;; it under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 2, or (at your option)
;;; any later version.
;;;
;;; GNU Emacs is distributed in the hope that it will be useful,
;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;;; GNU General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with GNU Emacs; see the file COPYING.  If not, write to
;;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
Jim Blandy's avatar
Jim Blandy committed
22

Eric S. Raymond's avatar
Eric S. Raymond committed
23
;;; Commentary:
Jim Blandy's avatar
Jim Blandy committed
24 25 26 27 28 29 30 31

;; X-win.el:  this file is loaded from ../lisp/startup.el when it recognizes
;; that X windows are to be used.  Command line switches are parsed and those
;; pertaining to X are processed and removed from the command line.  The
;; X display is opened and hooks are set for popping up the initial window.

;; startup.el will then examine startup files, and eventually call the hooks
;; which create the first window (s).
Eric S. Raymond's avatar
Eric S. Raymond committed
32 33

;;; Code:
Jim Blandy's avatar
Jim Blandy committed
34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53

;; These are the standard X switches from the Xt Initialize.c file of
;; Release 4.

;; Command line		Resource Manager string

;; +rv			*reverseVideo
;; +synchronous		*synchronous
;; -background		*background
;; -bd			*borderColor
;; -bg			*background
;; -bordercolor		*borderColor
;; -borderwidth		.borderWidth
;; -bw			.borderWidth
;; -display		.display
;; -fg			*foreground
;; -fn			*font
;; -font		*font
;; -foreground		*foreground
;; -geometry		.geometry
54 55
;; -i			.iconType
;; -itype		.iconType
Jim Blandy's avatar
Jim Blandy committed
56 57 58 59 60 61 62 63 64 65 66
;; -iconic		.iconic
;; -name		.name
;; -reverse		*reverseVideo
;; -rv			*reverseVideo
;; -selectionTimeout    .selectionTimeout
;; -synchronous		*synchronous
;; -xrm

;; An alist of X options and the function which handles them.  See
;; ../startup.el.

Jim Blandy's avatar
Jim Blandy committed
67
(if (not (eq window-system 'x))
68
    (error "%s: Loading x-win.el but not compiled for X" (invocation-name)))
Jim Blandy's avatar
Jim Blandy committed
69
	 
Jim Blandy's avatar
Jim Blandy committed
70
(require 'frame)
Jim Blandy's avatar
Jim Blandy committed
71
(require 'mouse)
72
(require 'scroll-bar)
73 74
(require 'faces)
(require 'select)
Richard M. Stallman's avatar
Richard M. Stallman committed
75
(require 'menu-bar)
Jim Blandy's avatar
Jim Blandy committed
76

77 78
(defvar x-invocation-args)

79 80
(defvar x-command-line-resources nil)

Jim Blandy's avatar
Jim Blandy committed
81
(setq command-switch-alist
Jim Blandy's avatar
Jim Blandy committed
82
      (append '(("-bw" .	x-handle-numeric-switch)
Jim Blandy's avatar
Jim Blandy committed
83 84
		("-d" .		x-handle-display)
		("-display" .	x-handle-display)
85 86
		("-name" .	x-handle-name-rn-switch)
		("-rn" .	x-handle-name-rn-switch)
Jim Blandy's avatar
Jim Blandy committed
87 88 89 90 91 92
		("-T" .		x-handle-switch)
		("-r" .		x-handle-switch)
		("-rv" .	x-handle-switch)
		("-reverse" .	x-handle-switch)
		("-fn" .	x-handle-switch)
		("-font" .	x-handle-switch)
93
		("-ib" .	x-handle-numeric-switch)
Jim Blandy's avatar
Jim Blandy committed
94 95 96 97 98 99 100
		("-g" .		x-handle-geometry)
		("-geometry" .	x-handle-geometry)
		("-fg" .	x-handle-switch)
		("-foreground".	x-handle-switch)
		("-bg" .	x-handle-switch)
		("-background".	x-handle-switch)
		("-ms" .	x-handle-switch)
101
		("-itype" .	x-handle-switch)
102
		("-i" 	.	x-handle-switch)
103
		("-iconic" .	x-handle-iconic)
104
		("-xrm" .       x-handle-xrm-switch)
Jim Blandy's avatar
Jim Blandy committed
105 106 107 108
		("-cr" .	x-handle-switch)
		("-vb" .	x-handle-switch)
		("-hb" .	x-handle-switch)
		("-bd" .	x-handle-switch))
Jim Blandy's avatar
Jim Blandy committed
109 110 111 112 113
	      command-switch-alist))

(defconst x-switch-definitions
  '(("-name" name)
    ("-T" name)
114 115 116
    ("-r" reverse t)
    ("-rv" reverse t)
    ("-reverse" reverse t)
Jim Blandy's avatar
Jim Blandy committed
117 118 119 120 121 122 123 124 125
    ("-fn" font)
    ("-font" font)
    ("-ib" internal-border-width)
    ("-fg" foreground-color)
    ("-foreground" foreground-color)
    ("-bg" background-color)
    ("-background" background-color)
    ("-ms" mouse-color)
    ("-cr" cursor-color)
126
    ("-itype" icon-type t)
127
    ("-i" icon-type t)
128 129
    ("-vb" vertical-scroll-bars t)
    ("-hb" horizontal-scroll-bars t)
Jim Blandy's avatar
Jim Blandy committed
130 131 132 133 134 135 136 137
    ("-bd" border-color)
    ("-bw" border-width)))

;; Handler for switches of the form "-switch value" or "-switch".
(defun x-handle-switch (switch)
  (let ((aelt (assoc switch x-switch-definitions)))
    (if aelt
	(if (nth 2 aelt)
Jim Blandy's avatar
Jim Blandy committed
138
	    (setq default-frame-alist
Jim Blandy's avatar
Jim Blandy committed
139
		  (cons (cons (nth 1 aelt) (nth 2 aelt))
Jim Blandy's avatar
Jim Blandy committed
140 141
			default-frame-alist))
	  (setq default-frame-alist
Jim Blandy's avatar
Jim Blandy committed
142 143
		(cons (cons (nth 1 aelt)
			    (car x-invocation-args))
Jim Blandy's avatar
Jim Blandy committed
144
		      default-frame-alist)
Jim Blandy's avatar
Jim Blandy committed
145 146
		x-invocation-args (cdr x-invocation-args))))))

147 148 149 150 151
;; Make -iconic apply only to the initial frame!
(defun x-handle-iconic (switch)
  (setq initial-frame-alist
	(cons '(visibility . icon) initial-frame-alist)))

Jim Blandy's avatar
Jim Blandy committed
152 153 154 155
;; Handler for switches of the form "-switch n"
(defun x-handle-numeric-switch (switch)
  (let ((aelt (assoc switch x-switch-definitions)))
    (if aelt
Jim Blandy's avatar
Jim Blandy committed
156
	(setq default-frame-alist
Jim Blandy's avatar
Jim Blandy committed
157 158
	      (cons (cons (nth 1 aelt)
			  (string-to-int (car x-invocation-args)))
Jim Blandy's avatar
Jim Blandy committed
159
		    default-frame-alist)
Jim Blandy's avatar
Jim Blandy committed
160 161 162
	      x-invocation-args
	      (cdr x-invocation-args)))))

163 164 165 166
;; Handle the -xrm option.
(defun x-handle-xrm-switch (switch)
  (or (consp x-invocation-args)
      (error "%s: missing argument to `%s' option" (invocation-name) switch))
167 168 169
  (setq x-command-line-resources (car x-invocation-args))
  (setq x-invocation-args (cdr x-invocation-args)))

Jim Blandy's avatar
Jim Blandy committed
170 171
;; Handle the geometry option
(defun x-handle-geometry (switch)
172 173 174
  (setq initial-frame-alist
	(append initial-frame-alist
		(x-parse-geometry (car x-invocation-args)))
Jim Blandy's avatar
Jim Blandy committed
175 176
	x-invocation-args (cdr x-invocation-args)))

177 178 179 180 181 182 183 184 185 186 187 188
;; Handle the -name and -rn options.  Set the variable x-resource-name
;; to the option's operand; if the switch was `-name', set the name of
;; the initial frame, too.
(defun x-handle-name-rn-switch (switch)
  (or (consp x-invocation-args)
      (error "%s: missing argument to `%s' option" (invocation-name) switch))
  (setq x-resource-name (car x-invocation-args)
	x-invocation-args (cdr x-invocation-args))
  (if (string= switch "-name")
      (setq initial-frame-alist (cons (cons 'name x-resource-name)
				      initial-frame-alist))))

Jim Blandy's avatar
Jim Blandy committed
189
(defvar x-display-name nil
Jim Blandy's avatar
Jim Blandy committed
190
  "The X display name specifying server and X frame.")
Jim Blandy's avatar
Jim Blandy committed
191 192 193 194 195 196 197

(defun x-handle-display (switch)
  (setq x-display-name (car x-invocation-args)
	x-invocation-args (cdr x-invocation-args)))

(defvar x-invocation-args nil)

Jim Blandy's avatar
Jim Blandy committed
198 199 200 201 202 203 204
(defun x-handle-args (args)
  "Here the X-related command line options in ARGS are processed,
before the user's startup file is loaded.  They are copied to
x-invocation args from which the X-related things are extracted, first
the switch (e.g., \"-fg\") in the following code, and possible values
(e.g., \"black\") in the option handler code (e.g., x-handle-switch).
This returns ARGS with the arguments that have been processed removed."
Jim Blandy's avatar
Jim Blandy committed
205 206 207 208 209 210 211 212 213 214 215
  (setq x-invocation-args args
	args nil)
  (while x-invocation-args
    (let* ((this-switch (car x-invocation-args))
	   (aelt (assoc this-switch command-switch-alist)))
      (setq x-invocation-args (cdr x-invocation-args))
      (if aelt
	  (funcall (cdr aelt) this-switch)
	(setq args (cons this-switch args)))))
  (setq args (nreverse args)))

Jim Blandy's avatar
Jim Blandy committed
216

Jim Blandy's avatar
Jim Blandy committed
217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455

;;
;; Standard X cursor shapes, courtesy of Mr. Fox, who wanted ALL of them.
;;

(defconst x-pointer-X-cursor 0)
(defconst x-pointer-arrow 2)
(defconst x-pointer-based-arrow-down 4)
(defconst x-pointer-based-arrow-up 6)
(defconst x-pointer-boat 8)
(defconst x-pointer-bogosity 10)
(defconst x-pointer-bottom-left-corner 12)
(defconst x-pointer-bottom-right-corner 14)
(defconst x-pointer-bottom-side 16)
(defconst x-pointer-bottom-tee 18)
(defconst x-pointer-box-spiral 20)
(defconst x-pointer-center-ptr 22)
(defconst x-pointer-circle 24)
(defconst x-pointer-clock 26)
(defconst x-pointer-coffee-mug 28)
(defconst x-pointer-cross 30)
(defconst x-pointer-cross-reverse 32)
(defconst x-pointer-crosshair 34)
(defconst x-pointer-diamond-cross 36)
(defconst x-pointer-dot 38)
(defconst x-pointer-dotbox 40)
(defconst x-pointer-double-arrow 42)
(defconst x-pointer-draft-large 44)
(defconst x-pointer-draft-small 46)
(defconst x-pointer-draped-box 48)
(defconst x-pointer-exchange 50)
(defconst x-pointer-fleur 52)
(defconst x-pointer-gobbler 54)
(defconst x-pointer-gumby 56)
(defconst x-pointer-hand1 58)
(defconst x-pointer-hand2 60)
(defconst x-pointer-heart 62)
(defconst x-pointer-icon 64)
(defconst x-pointer-iron-cross 66)
(defconst x-pointer-left-ptr 68)
(defconst x-pointer-left-side 70)
(defconst x-pointer-left-tee 72)
(defconst x-pointer-leftbutton 74)
(defconst x-pointer-ll-angle 76)
(defconst x-pointer-lr-angle 78)
(defconst x-pointer-man 80)
(defconst x-pointer-middlebutton 82)
(defconst x-pointer-mouse 84)
(defconst x-pointer-pencil 86)
(defconst x-pointer-pirate 88)
(defconst x-pointer-plus 90)
(defconst x-pointer-question-arrow 92)
(defconst x-pointer-right-ptr 94)
(defconst x-pointer-right-side 96)
(defconst x-pointer-right-tee 98)
(defconst x-pointer-rightbutton 100)
(defconst x-pointer-rtl-logo 102)
(defconst x-pointer-sailboat 104)
(defconst x-pointer-sb-down-arrow 106)
(defconst x-pointer-sb-h-double-arrow 108)
(defconst x-pointer-sb-left-arrow 110)
(defconst x-pointer-sb-right-arrow 112)
(defconst x-pointer-sb-up-arrow 114)
(defconst x-pointer-sb-v-double-arrow 116)
(defconst x-pointer-shuttle 118)
(defconst x-pointer-sizing 120)
(defconst x-pointer-spider 122)
(defconst x-pointer-spraycan 124)
(defconst x-pointer-star 126)
(defconst x-pointer-target 128)
(defconst x-pointer-tcross 130)
(defconst x-pointer-top-left-arrow 132)
(defconst x-pointer-top-left-corner 134)
(defconst x-pointer-top-right-corner 136)
(defconst x-pointer-top-side 138)
(defconst x-pointer-top-tee 140)
(defconst x-pointer-trek 142)
(defconst x-pointer-ul-angle 144)
(defconst x-pointer-umbrella 146)
(defconst x-pointer-ur-angle 148)
(defconst x-pointer-watch 150)
(defconst x-pointer-xterm 152)

;;
;; Available colors
;;

(defvar x-colors '("aquamarine"
		   "Aquamarine"
		   "medium aquamarine"
		   "MediumAquamarine"
		   "black"
		   "Black"
		   "blue"
		   "Blue"
		   "cadet blue"
		   "CadetBlue"
		   "cornflower blue"
		   "CornflowerBlue"
		   "dark slate blue"
		   "DarkSlateBlue"
		   "light blue"
		   "LightBlue"
		   "light steel blue"
		   "LightSteelBlue"
		   "medium blue"
		   "MediumBlue"
		   "medium slate blue"
		   "MediumSlateBlue"
		   "midnight blue"
		   "MidnightBlue"
		   "navy blue"
		   "NavyBlue"
		   "navy"
		   "Navy"
		   "sky blue"
		   "SkyBlue"
		   "slate blue"
		   "SlateBlue"
		   "steel blue"
		   "SteelBlue"
		   "coral"
		   "Coral"
		   "cyan"
		   "Cyan"
		   "firebrick"
		   "Firebrick"
		   "brown"
		   "Brown"
		   "gold"
		   "Gold"
		   "goldenrod"
		   "Goldenrod"
		   "medium goldenrod"
		   "MediumGoldenrod"
		   "green"
		   "Green"
		   "dark green"
		   "DarkGreen"
		   "dark olive green"
		   "DarkOliveGreen"
		   "forest green"
		   "ForestGreen"
		   "lime green"
		   "LimeGreen"
		   "medium forest green"
		   "MediumForestGreen"
		   "medium sea green"
		   "MediumSeaGreen"
		   "medium spring green"
		   "MediumSpringGreen"
		   "pale green"
		   "PaleGreen"
		   "sea green"
		   "SeaGreen"
		   "spring green"
		   "SpringGreen"
		   "yellow green"
		   "YellowGreen"
		   "dark slate grey"
		   "DarkSlateGrey"
		   "dark slate gray"
		   "DarkSlateGray"
		   "dim grey"
		   "DimGrey"
		   "dim gray"
		   "DimGray"
		   "light grey"
		   "LightGrey"
		   "light gray"
		   "LightGray"
		   "gray"
		   "grey"
		   "Gray"
		   "Grey"
		   "khaki"
		   "Khaki"
		   "magenta"
		   "Magenta"
		   "maroon"
		   "Maroon"
		   "orange"
		   "Orange"
		   "orchid"
		   "Orchid"
		   "dark orchid"
		   "DarkOrchid"
		   "medium orchid"
		   "MediumOrchid"
		   "pink"
		   "Pink"
		   "plum"
		   "Plum"
		   "red"
		   "Red"
		   "indian red"
		   "IndianRed"
		   "medium violet red"
		   "MediumVioletRed"
		   "orange red"
		   "OrangeRed"
		   "violet red"
		   "VioletRed"
		   "salmon"
		   "Salmon"
		   "sienna"
		   "Sienna"
		   "tan"
		   "Tan"
		   "thistle"
		   "Thistle"
		   "turquoise"
		   "Turquoise"
		   "dark turquoise"
		   "DarkTurquoise"
		   "medium turquoise"
		   "MediumTurquoise"
		   "violet"
		   "Violet"
		   "blue violet"
		   "BlueViolet"
		   "wheat"
		   "Wheat"
		   "white"
		   "White"
		   "yellow"
		   "Yellow"
		   "green yellow"
		   "GreenYellow")
  "The full list of X colors from the rgb.text file.")

(defun x-defined-colors ()
  "Return a list of colors supported by the current X-Display."
  (let ((all-colors x-colors)
	(this-color nil)
	(defined-colors nil))
    (while all-colors
      (setq this-color (car all-colors)
	    all-colors (cdr all-colors))
456
      (and (x-color-defined-p this-color)
Jim Blandy's avatar
Jim Blandy committed
457 458 459
	   (setq defined-colors (cons this-color defined-colors))))
    defined-colors))

Jim Blandy's avatar
Jim Blandy committed
460 461
;;;; Function keys

462 463 464 465 466
(defun iconify-or-deiconify-frame ()
  "Iconify the selected frame, or deiconify if it's currently an icon."
  (interactive)
  (if (eq (cdr (assq 'visibility (frame-parameters))) t)
      (iconify-frame)
467
    (let ((foo (selected-frame)))
468
      (make-frame-invisible foo t)
469
      (make-frame-visible foo))))
470 471 472

(substitute-key-definition 'suspend-emacs 'iconify-or-deiconify-frame
			   global-map)
Jim Blandy's avatar
Jim Blandy committed
473

474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499
;; Map certain keypad keys into ASCII characters
;; that people usually expect.
(define-key function-key-map [backspace] [127])
(define-key function-key-map [delete] [127])
(define-key function-key-map [tab] [?\t])
(define-key function-key-map [linefeed] [?\n])
(define-key function-key-map [clear] [11])
(define-key function-key-map [return] [13])
(define-key function-key-map [escape] [?\e])
(define-key function-key-map [M-backspace] [?\M-\d])
(define-key function-key-map [M-delete] [?\M-\d])
(define-key function-key-map [M-tab] [?\M-\t])
(define-key function-key-map [M-linefeed] [?\M-\n])
(define-key function-key-map [M-clear] [?\M-\013])
(define-key function-key-map [M-return] [?\M-\015])
(define-key function-key-map [M-escape] [?\M-\e])

;; These tell read-char how to convert
;; these special chars to ASCII.
(put 'backspace 'ascii-character 127)
(put 'delete 'ascii-character 127)
(put 'tab 'ascii-character ?\t)
(put 'linefeed 'ascii-character ?\n)
(put 'clear 'ascii-character 12)
(put 'return 'ascii-character 13)
(put 'escape 'ascii-character ?\e)
500

501 502 503 504
;; Set up to recognize vendor-specific keysyms.
;; Unless/until there is a real conflict,
;; we need not try to make this list depend on
;; the type of X server in use.
505
(setq system-key-alist
506 507
      '(
	;; These are some HP keys.
508 509 510 511 512 513 514 515 516
	(  168 . mute-acute)
	(  169 . mute-grave)
	(  170 . mute-asciicircum)
	(  171 . mute-diaeresis)
	(  172 . mute-asciitilde)
	(  175 . lira)
	(  190 . guilder)
	(  252 . block)
	(  256 . longminus)
517 518 519 520 521 522 523 524 525 526 527 528
	(65388 . reset)
	(65389 . system)
	(65390 . user)
	(65391 . clearline)
	(65392 . insertline)
	(65393 . deleteline)
	(65394 . insertchar)
	(65395 . deletechar)
	(65396 . backtab)
	(65397 . kp-backtab)
	;; This is used on some system or other.
	(0 . remove)
529 530 531
	;; These are for Sun.
	(392976 . f35)
    	(392977 . f36)
532
	(393056 . req)
533
	))
Jim Blandy's avatar
Jim Blandy committed
534 535

;;;; Selections and cut buffers
Jim Blandy's avatar
Jim Blandy committed
536

Jim Blandy's avatar
Jim Blandy committed
537 538 539 540 541
;;; We keep track of the last text selected here, so we can check the
;;; current selection against it, and avoid passing back our own text
;;; from x-cut-buffer-or-selection-value.
(defvar x-last-selected-text nil)

542
;;; It is said that overlarge strings are slow to put into the cut buffer.
543 544
;;; Note this value is overridden below.
(defvar x-cut-buffer-max 20000
545 546 547
  "Max number of characters to put in the cut buffer.")

;;; Make TEXT, a string, the primary X selection.
Jim Blandy's avatar
Jim Blandy committed
548
;;; Also, set the value of X cut buffer 0, for backward compatibility
549
;;; with older X applications.
550 551
;;; gildea@lcs.mit.edu says it's not desirable to put kills
;;; in the clipboard.
552
(defun x-select-text (text &optional push)
553 554 555
  ;; Don't send the cut buffer too much text.
  ;; It becomes slow, and if really big it causes errors.
  (if (< (length text) x-cut-buffer-max)
556
      (x-set-cut-buffer text push)
557
    (x-set-cut-buffer "" push))
558
  (x-set-selection 'PRIMARY text)
Jim Blandy's avatar
Jim Blandy committed
559
  (setq x-last-selected-text text))
Jim Blandy's avatar
Jim Blandy committed
560 561 562 563 564

;;; Return the value of the current X selection.  For compatibility
;;; with older X applications, this checks cut buffer 0 before
;;; retrieving the value of the primary selection.
(defun x-cut-buffer-or-selection-value ()
Jim Blandy's avatar
Jim Blandy committed
565 566
  (let (text)

567
    ;; Consult the selection, then the cut buffer.  Treat empty strings
Jim Blandy's avatar
Jim Blandy committed
568
    ;; as if they were unset.
569
    (setq text (x-get-selection 'PRIMARY))
Jim Blandy's avatar
Jim Blandy committed
570
    (if (string= text "") (setq text nil))
571
    (or text (setq text (x-get-cut-buffer 0)))
572
    (if (string= text "") (setq text nil))
Jim Blandy's avatar
Jim Blandy committed
573 574 575 576 577 578 579 580 581 582

    (cond
     ((not text) nil)
     ((eq text x-last-selected-text) nil)
     ((string= text x-last-selected-text)
      ;; Record the newer string, so subsequent calls can use the `eq' test.
      (setq x-last-selected-text text)
      nil)
     (t
      (setq x-last-selected-text text)))))
Jim Blandy's avatar
Jim Blandy committed
583

Jim Blandy's avatar
Jim Blandy committed
584 585 586 587 588

;;; Do the actual X Windows setup here; the above code just defines
;;; functions and variables that we use now.

(setq command-line-args (x-handle-args command-line-args))
589 590 591 592 593 594 595 596 597 598 599

;;; Make sure we have a valid resource name.
(or (stringp x-resource-name)
    (let (i)
      (setq x-resource-name (invocation-name))

      ;; Change any . or * characters in x-resource-name to hyphens,
      ;; so as not to choke when we use it in X resource queries.
      (while (setq i (string-match "[.*]" x-resource-name))
	(aset x-resource-name i ?-))))

Jim Blandy's avatar
Jim Blandy committed
600
(x-open-connection (or x-display-name
601 602
		       (setq x-display-name (getenv "DISPLAY")))
		   x-command-line-resources)
Jim Blandy's avatar
Jim Blandy committed
603

604
(setq frame-creation-function 'x-create-frame-with-faces)
605

606 607 608
(setq x-cut-buffer-max (min (- (/ (x-server-max-request-size) 2) 100)
			    x-cut-buffer-max))

609 610 611 612 613 614 615 616
;; Apply a geometry resource to the initial frame.  Put it at the end
;; of the alist, so that anything specified on the command line takes
;; precedence.
(let ((res-geometry (x-get-resource "geometry" "Geometry")))
  (if res-geometry
      (setq initial-frame-alist (append initial-frame-alist
					(x-parse-geometry res-geometry)))))

617
;; Check the reverseVideo resource.
618 619 620 621 622 623
(let ((case-fold-search t))
  (let ((rv (x-get-resource "reverseVideo" "ReverseVideo")))
    (if (and rv
	     (string-match "^\\(true\\|yes\\|on\\)$" rv))
	(setq default-frame-alist
	      (cons '(reverse . t) default-frame-alist)))))
624

625 626 627
;; Set x-selection-timeout, measured in milliseconds.
(let ((res-selection-timeout
       (x-get-resource "selectionTimeout" "SelectionTimeout")))
628
  (setq x-selection-timeout 20000)
629 630 631
  (if res-selection-timeout
      (setq x-selection-timeout (string-to-number res-selection-timeout))))

632 633
(defun x-win-suspend-error ()
  (error "Suspending an emacs running under X makes no sense"))
634 635
(add-hook 'suspend-hook 'x-win-suspend-error)

Jim Blandy's avatar
Jim Blandy committed
636 637 638
;;; Arrange for the kill and yank functions to set and check the clipboard.
(setq interprogram-cut-function 'x-select-text)
(setq interprogram-paste-function 'x-cut-buffer-or-selection-value)
Jim Blandy's avatar
Jim Blandy committed
639

Jim Blandy's avatar
Jim Blandy committed
640 641 642
;;; Turn off window-splitting optimization; X is usually fast enough
;;; that this is only annoying.
(setq split-window-keep-point t)
Eric S. Raymond's avatar
Eric S. Raymond committed
643 644

;;; x-win.el ends here