code.delx.au - gnu-emacs/blob - lisp/term/x-win.el

   1 ;;; x-win.el --- parse switches controlling interface with X window system
   2
   3 ;; Copyright (C) 1993, 1994 Free Software Foundation, Inc.
   4
   5 ;; Author: FSF
   6 ;; Keywords: terminals
   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 the
  22 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  23 ;; Boston, MA 02111-1307, USA.
  24
  25 ;;; Commentary:
  26
  27 ;; X-win.el:  this file is loaded from ../lisp/startup.el when it recognizes
  28 ;; that X windows are to be used.  Command line switches are parsed and those
  29 ;; pertaining to X are processed and removed from the command line.  The
  30 ;; X display is opened and hooks are set for popping up the initial window.
  31
  32 ;; startup.el will then examine startup files, and eventually call the hooks
  33 ;; which create the first window (s).
  34
  35 ;;; Code:
  36 \f
  37 ;; These are the standard X switches from the Xt Initialize.c file of
  38 ;; Release 4.
  39
  40 ;; Command line         Resource Manager string
  41
  42 ;; +rv                  *reverseVideo
  43 ;; +synchronous         *synchronous
  44 ;; -background          *background
  45 ;; -bd                  *borderColor
  46 ;; -bg                  *background
  47 ;; -bordercolor         *borderColor
  48 ;; -borderwidth         .borderWidth
  49 ;; -bw                  .borderWidth
  50 ;; -display             .display
  51 ;; -fg                  *foreground
  52 ;; -fn                  *font
  53 ;; -font                *font
  54 ;; -foreground          *foreground
  55 ;; -geometry            .geometry
  56 ;; -i                   .iconType
  57 ;; -itype               .iconType
  58 ;; -iconic              .iconic
  59 ;; -name                .name
  60 ;; -reverse             *reverseVideo
  61 ;; -rv                  *reverseVideo
  62 ;; -selectionTimeout    .selectionTimeout
  63 ;; -synchronous         *synchronous
  64 ;; -xrm
  65
  66 ;; An alist of X options and the function which handles them.  See
  67 ;; ../startup.el.
  68
  69 (if (not (eq window-system 'x))
  70     (error "%s: Loading x-win.el but not compiled for X" (invocation-name)))
  71
  72 (require 'frame)
  73 (require 'mouse)
  74 (require 'scroll-bar)
  75 (require 'faces)
  76 (require 'select)
  77 (require 'menu-bar)
  78
  79 (defvar x-invocation-args)
  80
  81 (defvar x-command-line-resources nil)
  82
  83 ;; Handler for switches of the form "-switch value" or "-switch".
  84 (defun x-handle-switch (switch)
  85   (let ((aelt (assoc switch command-line-x-option-alist)))
  86     (if aelt
  87         (let ((param (nth 3 aelt))
  88               (value (nth 4 aelt)))
  89           (if value
  90               (setq default-frame-alist
  91                     (cons (cons param value)
  92                           default-frame-alist))
  93             (setq default-frame-alist
  94                   (cons (cons param
  95                               (car x-invocation-args))
  96                         default-frame-alist)
  97                   x-invocation-args (cdr x-invocation-args)))))))
  98
  99 ;; Handler for switches of the form "-switch n"
 100 (defun x-handle-numeric-switch (switch)
 101   (let ((aelt (assoc switch command-line-x-option-alist)))
 102     (if aelt
 103         (let ((param (nth 3 aelt)))
 104           (setq default-frame-alist
 105                 (cons (cons param
 106                             (string-to-int (car x-invocation-args)))
 107                       default-frame-alist)
 108                 x-invocation-args
 109                 (cdr x-invocation-args))))))
 110
 111 ;; Make -iconic apply only to the initial frame!
 112 (defun x-handle-iconic (switch)
 113   (setq initial-frame-alist
 114         (cons '(visibility . icon) initial-frame-alist)))
 115
 116 ;; Handle the -xrm option.
 117 (defun x-handle-xrm-switch (switch)
 118   (or (consp x-invocation-args)
 119       (error "%s: missing argument to `%s' option" (invocation-name) switch))
 120   (setq x-command-line-resources (car x-invocation-args))
 121   (setq x-invocation-args (cdr x-invocation-args)))
 122
 123 ;; Handle the geometry option
 124 (defun x-handle-geometry (switch)
 125   (let ((geo (x-parse-geometry (car x-invocation-args))))
 126     (setq initial-frame-alist
 127           (append initial-frame-alist
 128                   (if (or (assq 'left geo) (assq 'top geo))
 129                       '((user-position . t)))
 130                   (if (or (assq 'height geo) (assq 'width geo))
 131                       '((user-size . t)))
 132                   geo)
 133           x-invocation-args (cdr x-invocation-args))))
 134
 135 ;; Handle the -name and -rn options.  Set the variable x-resource-name
 136 ;; to the option's operand; if the switch was `-name', set the name of
 137 ;; the initial frame, too.
 138 (defun x-handle-name-rn-switch (switch)
 139   (or (consp x-invocation-args)
 140       (error "%s: missing argument to `%s' option" (invocation-name) switch))
 141   (setq x-resource-name (car x-invocation-args)
 142         x-invocation-args (cdr x-invocation-args))
 143   (if (string= switch "-name")
 144       (setq initial-frame-alist (cons (cons 'name x-resource-name)
 145                                       initial-frame-alist))))
 146
 147 (defvar x-display-name nil
 148   "The X display name specifying server and X frame.")
 149
 150 (defun x-handle-display (switch)
 151   (setq x-display-name (car x-invocation-args)
 152         x-invocation-args (cdr x-invocation-args))
 153   ;; Make subshell programs see the same DISPLAY value Emacs really uses.
 154   ;; Note that this isn't completely correct, since Emacs can use
 155   ;; multiple displays.  However, there is no way to tell an already
 156   ;; running subshell which display the user is currently typing on.
 157   (setenv "DISPLAY" x-display-name))
 158
 159 (defun x-handle-args (args)
 160   "Process the X-related command line options in ARGS.
 161 This is done before the user's startup file is loaded.  They are copied to
 162 `x-invocation-args', from which the X-related things are extracted, first
 163 the switch (e.g., \"-fg\") in the following code, and possible values
 164 \(e.g., \"black\") in the option handler code (e.g., x-handle-switch).
 165 This function returns ARGS minus the arguments that have been processed."
 166   ;; We use ARGS to accumulate the args that we don't handle here, to return.
 167   (setq x-invocation-args args
 168         args nil)
 169   (while x-invocation-args
 170     (let* ((this-switch (car x-invocation-args))
 171            (orig-this-switch this-switch)
 172            completion argval aelt handler)
 173       (setq x-invocation-args (cdr x-invocation-args))
 174       ;; Check for long options with attached arguments
 175       ;; and separate out the attached option argument into argval.
 176       (if (string-match "^--[^=]*=" this-switch)
 177           (setq argval (substring this-switch (match-end 0))
 178                 this-switch (substring this-switch 0 (1- (match-end 0)))))
 179       ;; Complete names of long options.
 180       (if (string-match "^--" this-switch)
 181           (progn
 182             (setq completion (try-completion this-switch command-line-x-option-alist))
 183             (if (eq completion t)
 184                 ;; Exact match for long option.
 185                 nil
 186               (if (stringp completion)
 187                   (let ((elt (assoc completion command-line-x-option-alist)))
 188                     ;; Check for abbreviated long option.
 189                     (or elt
 190                         (error "Option `%s' is ambiguous" this-switch))
 191                     (setq this-switch completion))))))
 192       (setq aelt (assoc this-switch command-line-x-option-alist))
 193       (if aelt (setq handler (nth 2 aelt)))
 194       (if handler
 195           (if argval
 196               (let ((x-invocation-args
 197                      (cons argval x-invocation-args)))
 198                 (funcall handler this-switch))
 199             (funcall handler this-switch))
 200         (setq args (cons orig-this-switch args)))))
 201   (nreverse args))
 202 \f
 203 ;;
 204 ;; Standard X cursor shapes, courtesy of Mr. Fox, who wanted ALL of them.
 205 ;;
 206
 207 (defconst x-pointer-X-cursor 0)
 208 (defconst x-pointer-arrow 2)
 209 (defconst x-pointer-based-arrow-down 4)
 210 (defconst x-pointer-based-arrow-up 6)
 211 (defconst x-pointer-boat 8)
 212 (defconst x-pointer-bogosity 10)
 213 (defconst x-pointer-bottom-left-corner 12)
 214 (defconst x-pointer-bottom-right-corner 14)
 215 (defconst x-pointer-bottom-side 16)
 216 (defconst x-pointer-bottom-tee 18)
 217 (defconst x-pointer-box-spiral 20)
 218 (defconst x-pointer-center-ptr 22)
 219 (defconst x-pointer-circle 24)
 220 (defconst x-pointer-clock 26)
 221 (defconst x-pointer-coffee-mug 28)
 222 (defconst x-pointer-cross 30)
 223 (defconst x-pointer-cross-reverse 32)
 224 (defconst x-pointer-crosshair 34)
 225 (defconst x-pointer-diamond-cross 36)
 226 (defconst x-pointer-dot 38)
 227 (defconst x-pointer-dotbox 40)
 228 (defconst x-pointer-double-arrow 42)
 229 (defconst x-pointer-draft-large 44)
 230 (defconst x-pointer-draft-small 46)
 231 (defconst x-pointer-draped-box 48)
 232 (defconst x-pointer-exchange 50)
 233 (defconst x-pointer-fleur 52)
 234 (defconst x-pointer-gobbler 54)
 235 (defconst x-pointer-gumby 56)
 236 (defconst x-pointer-hand1 58)
 237 (defconst x-pointer-hand2 60)
 238 (defconst x-pointer-heart 62)
 239 (defconst x-pointer-icon 64)
 240 (defconst x-pointer-iron-cross 66)
 241 (defconst x-pointer-left-ptr 68)
 242 (defconst x-pointer-left-side 70)
 243 (defconst x-pointer-left-tee 72)
 244 (defconst x-pointer-leftbutton 74)
 245 (defconst x-pointer-ll-angle 76)
 246 (defconst x-pointer-lr-angle 78)
 247 (defconst x-pointer-man 80)
 248 (defconst x-pointer-middlebutton 82)
 249 (defconst x-pointer-mouse 84)
 250 (defconst x-pointer-pencil 86)
 251 (defconst x-pointer-pirate 88)
 252 (defconst x-pointer-plus 90)
 253 (defconst x-pointer-question-arrow 92)
 254 (defconst x-pointer-right-ptr 94)
 255 (defconst x-pointer-right-side 96)
 256 (defconst x-pointer-right-tee 98)
 257 (defconst x-pointer-rightbutton 100)
 258 (defconst x-pointer-rtl-logo 102)
 259 (defconst x-pointer-sailboat 104)
 260 (defconst x-pointer-sb-down-arrow 106)
 261 (defconst x-pointer-sb-h-double-arrow 108)
 262 (defconst x-pointer-sb-left-arrow 110)
 263 (defconst x-pointer-sb-right-arrow 112)
 264 (defconst x-pointer-sb-up-arrow 114)
 265 (defconst x-pointer-sb-v-double-arrow 116)
 266 (defconst x-pointer-shuttle 118)
 267 (defconst x-pointer-sizing 120)
 268 (defconst x-pointer-spider 122)
 269 (defconst x-pointer-spraycan 124)
 270 (defconst x-pointer-star 126)
 271 (defconst x-pointer-target 128)
 272 (defconst x-pointer-tcross 130)
 273 (defconst x-pointer-top-left-arrow 132)
 274 (defconst x-pointer-top-left-corner 134)
 275 (defconst x-pointer-top-right-corner 136)
 276 (defconst x-pointer-top-side 138)
 277 (defconst x-pointer-top-tee 140)
 278 (defconst x-pointer-trek 142)
 279 (defconst x-pointer-ul-angle 144)
 280 (defconst x-pointer-umbrella 146)
 281 (defconst x-pointer-ur-angle 148)
 282 (defconst x-pointer-watch 150)
 283 (defconst x-pointer-xterm 152)
 284 \f
 285 ;;
 286 ;; Available colors
 287 ;;
 288
 289 (defvar x-colors '("aquamarine"
 290                    "Aquamarine"
 291                    "medium aquamarine"
 292                    "MediumAquamarine"
 293                    "black"
 294                    "Black"
 295                    "blue"
 296                    "Blue"
 297                    "cadet blue"
 298                    "CadetBlue"
 299                    "cornflower blue"
 300                    "CornflowerBlue"
 301                    "dark slate blue"
 302                    "DarkSlateBlue"
 303                    "light blue"
 304                    "LightBlue"
 305                    "light steel blue"
 306                    "LightSteelBlue"
 307                    "medium blue"
 308                    "MediumBlue"
 309                    "medium slate blue"
 310                    "MediumSlateBlue"
 311                    "midnight blue"
 312                    "MidnightBlue"
 313                    "navy blue"
 314                    "NavyBlue"
 315                    "navy"
 316                    "Navy"
 317                    "sky blue"
 318                    "SkyBlue"
 319                    "slate blue"
 320                    "SlateBlue"
 321                    "steel blue"
 322                    "SteelBlue"
 323                    "coral"
 324                    "Coral"
 325                    "cyan"
 326                    "Cyan"
 327                    "firebrick"
 328                    "Firebrick"
 329                    "brown"
 330                    "Brown"
 331                    "gold"
 332                    "Gold"
 333                    "goldenrod"
 334                    "Goldenrod"
 335                    "green"
 336                    "Green"
 337                    "dark green"
 338                    "DarkGreen"
 339                    "dark olive green"
 340                    "DarkOliveGreen"
 341                    "forest green"
 342                    "ForestGreen"
 343                    "lime green"
 344                    "LimeGreen"
 345                    "medium sea green"
 346                    "MediumSeaGreen"
 347                    "medium spring green"
 348                    "MediumSpringGreen"
 349                    "pale green"
 350                    "PaleGreen"
 351                    "sea green"
 352                    "SeaGreen"
 353                    "spring green"
 354                    "SpringGreen"
 355                    "yellow green"
 356                    "YellowGreen"
 357                    "dark slate grey"
 358                    "DarkSlateGrey"
 359                    "dark slate gray"
 360                    "DarkSlateGray"
 361                    "dim grey"
 362                    "DimGrey"
 363                    "dim gray"
 364                    "DimGray"
 365                    "light grey"
 366                    "LightGrey"
 367                    "light gray"
 368                    "LightGray"
 369                    "gray"
 370                    "grey"
 371                    "Gray"
 372                    "Grey"
 373                    "khaki"
 374                    "Khaki"
 375                    "magenta"
 376                    "Magenta"
 377                    "maroon"
 378                    "Maroon"
 379                    "orange"
 380                    "Orange"
 381                    "orchid"
 382                    "Orchid"
 383                    "dark orchid"
 384                    "DarkOrchid"
 385                    "medium orchid"
 386                    "MediumOrchid"
 387                    "pink"
 388                    "Pink"
 389                    "plum"
 390                    "Plum"
 391                    "red"
 392                    "Red"
 393                    "indian red"
 394                    "IndianRed"
 395                    "medium violet red"
 396                    "MediumVioletRed"
 397                    "orange red"
 398                    "OrangeRed"
 399                    "violet red"
 400                    "VioletRed"
 401                    "salmon"
 402                    "Salmon"
 403                    "sienna"
 404                    "Sienna"
 405                    "tan"
 406                    "Tan"
 407                    "thistle"
 408                    "Thistle"
 409                    "turquoise"
 410                    "Turquoise"
 411                    "dark turquoise"
 412                    "DarkTurquoise"
 413                    "medium turquoise"
 414                    "MediumTurquoise"
 415                    "violet"
 416                    "Violet"
 417                    "blue violet"
 418                    "BlueViolet"
 419                    "wheat"
 420                    "Wheat"
 421                    "white"
 422                    "White"
 423                    "yellow"
 424                    "Yellow"
 425                    "green yellow"
 426                    "GreenYellow")
 427   "The list of X colors from the `rgb.txt' file.")
 428
 429 (defun x-defined-colors (&optional frame)
 430   "Return a list of colors supported for a particular frame.
 431 The argument FRAME specifies which frame to try.
 432 The value may be different for frames on different X displays."
 433   (or frame (setq frame (selected-frame)))
 434   (let ((all-colors x-colors)
 435         (this-color nil)
 436         (defined-colors nil))
 437     (while all-colors
 438       (setq this-color (car all-colors)
 439             all-colors (cdr all-colors))
 440       (and (face-color-supported-p frame this-color t)
 441            (setq defined-colors (cons this-color defined-colors))))
 442     defined-colors))
 443 \f
 444 ;;;; Function keys
 445
 446 (defun iconify-or-deiconify-frame ()
 447   "Iconify the selected frame, or deiconify if it's currently an icon."
 448   (interactive)
 449   (if (eq (cdr (assq 'visibility (frame-parameters))) t)
 450       (iconify-frame)
 451     (make-frame-visible)))
 452
 453 (substitute-key-definition 'suspend-emacs 'iconify-or-deiconify-frame
 454                            global-map)
 455
 456 ;; Map certain keypad keys into ASCII characters
 457 ;; that people usually expect.
 458 (define-key function-key-map [backspace] [127])
 459 (define-key function-key-map [delete] [127])
 460 (define-key function-key-map [tab] [?\t])
 461 (define-key function-key-map [linefeed] [?\n])
 462 (define-key function-key-map [clear] [?\C-l])
 463 (define-key function-key-map [return] [?\C-m])
 464 (define-key function-key-map [escape] [?\e])
 465 (define-key function-key-map [M-backspace] [?\M-\d])
 466 (define-key function-key-map [M-delete] [?\M-\d])
 467 (define-key function-key-map [M-tab] [?\M-\t])
 468 (define-key function-key-map [M-linefeed] [?\M-\n])
 469 (define-key function-key-map [M-clear] [?\M-\C-l])
 470 (define-key function-key-map [M-return] [?\M-\C-m])
 471 (define-key function-key-map [M-escape] [?\M-\e])
 472
 473 ;; These tell read-char how to convert
 474 ;; these special chars to ASCII.
 475 (put 'backspace 'ascii-character 127)
 476 (put 'delete 'ascii-character 127)
 477 (put 'tab 'ascii-character ?\t)
 478 (put 'linefeed 'ascii-character ?\n)
 479 (put 'clear 'ascii-character 12)
 480 (put 'return 'ascii-character 13)
 481 (put 'escape 'ascii-character ?\e)
 482
 483 (defun vendor-specific-keysyms (vendor)
 484   "Return the appropriate value of system-key-alist for VENDOR.
 485 VENDOR is a string containing the name of the X Server's vendor,
 486 as returned by (x-server-vendor)."
 487   (cond ((string-equal vendor "Apollo Computer Inc.")
 488          '((65280 . linedel)
 489            (65281 . chardel)
 490            (65282 . copy)
 491            (65283 . cut)
 492            (65284 . paste)
 493            (65285 . move)
 494            (65286 . grow)
 495            (65287 . cmd)
 496            (65288 . shell)
 497            (65289 . leftbar)
 498            (65290 . rightbar)
 499            (65291 . leftbox)
 500            (65292 . rightbox)
 501            (65293 . upbox)
 502            (65294 . downbox)
 503            (65295 . pop)
 504            (65296 . read)
 505            (65297 . edit)
 506            (65298 . save)
 507            (65299 . exit)
 508            (65300 . repeat)))
 509         ((or (string-equal vendor "Hewlett-Packard Incorporated")
 510              (string-equal vendor "Hewlett-Packard Company"))
 511          '((  168 . mute-acute)
 512            (  169 . mute-grave)
 513            (  170 . mute-asciicircum)
 514            (  171 . mute-diaeresis)
 515            (  172 . mute-asciitilde)
 516            (  175 . lira)
 517            (  190 . guilder)
 518            (  252 . block)
 519            (  256 . longminus)
 520            (65388 . reset)
 521            (65389 . system)
 522            (65390 . user)
 523            (65391 . clearline)
 524            (65392 . insertline)
 525            (65393 . deleteline)
 526            (65394 . insertchar)
 527            (65395 . deletechar)
 528            (65396 . backtab)
 529            (65397 . kp-backtab)))
 530         ((or (string-equal vendor "X11/NeWS - Sun Microsystems Inc.")
 531              (string-equal vendor "X Consortium"))
 532          '((392976 . f36)
 533            (392977 . f37)
 534            (393056 . req)
 535            ;; These are for Sun under X11R6
 536            (393072 . props)
 537            (393073 . front)
 538            (393074 . copy)
 539            (393075 . open)
 540            (393076 . paste)
 541            (393077 . cut)))
 542         (t
 543          ;; This is used by DEC's X server.
 544          '((65280 . remove)))))
 545
 546 \f
 547 ;;;; Selections and cut buffers
 548
 549 ;;; We keep track of the last text selected here, so we can check the
 550 ;;; current selection against it, and avoid passing back our own text
 551 ;;; from x-cut-buffer-or-selection-value.
 552 (defvar x-last-selected-text nil)
 553
 554 ;;; It is said that overlarge strings are slow to put into the cut buffer.
 555 ;;; Note this value is overridden below.
 556 (defvar x-cut-buffer-max 20000
 557   "Max number of characters to put in the cut buffer.")
 558
 559 (defvar x-select-enable-clipboard nil
 560   "Non-nil means cutting and pasting uses the clipboard.
 561 This is in addition to the primary selection.")
 562
 563 ;;; Make TEXT, a string, the primary X selection.
 564 ;;; Also, set the value of X cut buffer 0, for backward compatibility
 565 ;;; with older X applications.
 566 ;;; gildea@lcs.mit.edu says it's not desirable to put kills
 567 ;;; in the clipboard.
 568 (defun x-select-text (text &optional push)
 569   ;; Don't send the cut buffer too much text.
 570   ;; It becomes slow, and if really big it causes errors.
 571   (if (< (length text) x-cut-buffer-max)
 572       (x-set-cut-buffer text push)
 573     (x-set-cut-buffer "" push))
 574   (x-set-selection 'PRIMARY text)
 575   (if x-select-enable-clipboard
 576       (x-set-selection 'CLIPBOARD text))
 577   (setq x-last-selected-text text))
 578
 579 ;;; Return the value of the current X selection.
 580 ;;; Consult the selection, then the cut buffer.  Treat empty strings
 581 ;;; as if they were unset.
 582 (defun x-cut-buffer-or-selection-value ()
 583   (let (text)
 584
 585     ;; Don't die if x-get-selection signals an error.
 586     (condition-case c
 587         (setq text (x-get-selection 'PRIMARY))
 588       (error nil))
 589     (if (string= text "") (setq text nil))
 590
 591     (if x-select-enable-clipboard
 592         (condition-case c
 593             (setq text (x-get-selection 'CLIPBOARD))
 594           (error nil)))
 595     (if (string= text "") (setq text nil))
 596     (or text (setq text (x-get-cut-buffer 0)))
 597     (if (string= text "") (setq text nil))
 598
 599     (cond
 600      ((not text) nil)
 601      ((eq text x-last-selected-text) nil)
 602      ((string= text x-last-selected-text)
 603       ;; Record the newer string, so subsequent calls can use the `eq' test.
 604       (setq x-last-selected-text text)
 605       nil)
 606      (t
 607       (setq x-last-selected-text text)))))
 608
 609 \f
 610 ;;; Do the actual X Windows setup here; the above code just defines
 611 ;;; functions and variables that we use now.
 612
 613 (setq command-line-args (x-handle-args command-line-args))
 614
 615 ;;; Make sure we have a valid resource name.
 616 (or (stringp x-resource-name)
 617     (let (i)
 618       (setq x-resource-name (invocation-name))
 619
 620       ;; Change any . or * characters in x-resource-name to hyphens,
 621       ;; so as not to choke when we use it in X resource queries.
 622       (while (setq i (string-match "[.*]" x-resource-name))
 623         (aset x-resource-name i ?-))))
 624
 625 ;; For the benefit of older Emacses (19.27 and earlier) that are sharing
 626 ;; the same lisp directory, don't pass the third argument unless we seem
 627 ;; to have the multi-display support.
 628 (if (fboundp 'x-close-connection)
 629     (x-open-connection (or x-display-name
 630                            (setq x-display-name (getenv "DISPLAY")))
 631                        x-command-line-resources
 632                        ;; Exit Emacs with fatal error if this fails.
 633                        t)
 634   (x-open-connection (or x-display-name
 635                          (setq x-display-name (getenv "DISPLAY")))
 636                      x-command-line-resources))
 637
 638 (setq frame-creation-function 'x-create-frame-with-faces)
 639
 640 (setq x-cut-buffer-max (min (- (/ (x-server-max-request-size) 2) 100)
 641                             x-cut-buffer-max))
 642
 643 ;; Sun expects the menu bar cut and paste commands to use the clipboard.
 644 ;; This has ,? to match both on Sunos and on Solaris.
 645 (if (string-match "Sun Microsystems,? Inc\\."
 646                   (x-server-vendor))
 647     (menu-bar-enable-clipboard))
 648
 649 ;; Apply a geometry resource to the initial frame.  Put it at the end
 650 ;; of the alist, so that anything specified on the command line takes
 651 ;; precedence.
 652 (let* ((res-geometry (x-get-resource "geometry" "Geometry"))
 653        parsed)
 654   (if res-geometry
 655       (progn
 656         (setq parsed (x-parse-geometry res-geometry))
 657         ;; If the resource specifies a position,
 658         ;; call the position and size "user-specified".
 659         (if (or (assq 'top parsed) (assq 'left parsed))
 660             (setq parsed (cons '(user-position . t)
 661                                (cons '(user-size . t) parsed))))
 662         ;; All geometry parms apply to the initial frame.
 663         (setq initial-frame-alist (append initial-frame-alist parsed))
 664         ;; The size parms apply to all frames.
 665         (if (assq 'height parsed)
 666             (setq default-frame-alist
 667                   (cons (cons 'height (cdr (assq 'height parsed)))
 668                         default-frame-alist)))
 669         (if (assq 'width parsed)
 670             (setq default-frame-alist
 671                   (cons (cons 'width (cdr (assq 'width parsed)))
 672                         default-frame-alist))))))
 673
 674 ;; Check the reverseVideo resource.
 675 (let ((case-fold-search t))
 676   (let ((rv (x-get-resource "reverseVideo" "ReverseVideo")))
 677     (if (and rv
 678              (string-match "^\\(true\\|yes\\|on\\)$" rv))
 679         (setq default-frame-alist
 680               (cons '(reverse . t) default-frame-alist)))))
 681
 682 ;; Set x-selection-timeout, measured in milliseconds.
 683 (let ((res-selection-timeout
 684        (x-get-resource "selectionTimeout" "SelectionTimeout")))
 685   (setq x-selection-timeout 20000)
 686   (if res-selection-timeout
 687       (setq x-selection-timeout (string-to-number res-selection-timeout))))
 688
 689 (defun x-win-suspend-error ()
 690   (error "Suspending an emacs running under X makes no sense"))
 691 (add-hook 'suspend-hook 'x-win-suspend-error)
 692
 693 ;;; Arrange for the kill and yank functions to set and check the clipboard.
 694 (setq interprogram-cut-function 'x-select-text)
 695 (setq interprogram-paste-function 'x-cut-buffer-or-selection-value)
 696
 697 ;;; Turn off window-splitting optimization; X is usually fast enough
 698 ;;; that this is only annoying.
 699 (setq split-window-keep-point t)
 700
 701 ;; Don't show the frame name; that's redundant with X.
 702 (setq-default mode-line-buffer-identification '("Emacs: %12b"))
 703
 704 ;;; x-win.el ends here