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 (require 'fontset)
  79
  80 (defvar x-invocation-args)
  81
  82 (defvar x-command-line-resources nil)
  83
  84 ;; Handler for switches of the form "-switch value" or "-switch".
  85 (defun x-handle-switch (switch)
  86   (let ((aelt (assoc switch command-line-x-option-alist)))
  87     (if aelt
  88         (let ((param (nth 3 aelt))
  89               (value (nth 4 aelt)))
  90           (if value
  91               (setq default-frame-alist
  92                     (cons (cons param value)
  93                           default-frame-alist))
  94             (setq default-frame-alist
  95                   (cons (cons param
  96                               (car x-invocation-args))
  97                         default-frame-alist)
  98                   x-invocation-args (cdr x-invocation-args)))))))
  99
 100 ;; Handler for switches of the form "-switch n"
 101 (defun x-handle-numeric-switch (switch)
 102   (let ((aelt (assoc switch command-line-x-option-alist)))
 103     (if aelt
 104         (let ((param (nth 3 aelt)))
 105           (setq default-frame-alist
 106                 (cons (cons param
 107                             (string-to-int (car x-invocation-args)))
 108                       default-frame-alist)
 109                 x-invocation-args
 110                 (cdr x-invocation-args))))))
 111
 112 ;; Make -iconic apply only to the initial frame!
 113 (defun x-handle-iconic (switch)
 114   (setq initial-frame-alist
 115         (cons '(visibility . icon) initial-frame-alist)))
 116
 117 ;; Handle the -xrm option.
 118 (defun x-handle-xrm-switch (switch)
 119   (or (consp x-invocation-args)
 120       (error "%s: missing argument to `%s' option" (invocation-name) switch))
 121   (setq x-command-line-resources (car x-invocation-args))
 122   (setq x-invocation-args (cdr x-invocation-args)))
 123
 124 ;; Handle the geometry option
 125 (defun x-handle-geometry (switch)
 126   (let ((geo (x-parse-geometry (car x-invocation-args))))
 127     (setq initial-frame-alist
 128           (append initial-frame-alist
 129                   (if (or (assq 'left geo) (assq 'top geo))
 130                       '((user-position . t)))
 131                   (if (or (assq 'height geo) (assq 'width geo))
 132                       '((user-size . t)))
 133                   geo)
 134           x-invocation-args (cdr x-invocation-args))))
 135
 136 ;; Handle the -name option.  Set the variable x-resource-name
 137 ;; to the option's operand; set the name of
 138 ;; the initial frame, too.
 139 (defun x-handle-name-switch (switch)
 140   (or (consp x-invocation-args)
 141       (error "%s: missing argument to `%s' option" (invocation-name) switch))
 142   (setq x-resource-name (car x-invocation-args)
 143         x-invocation-args (cdr x-invocation-args))
 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 (and x-invocation-args
 170               (not (equal (car x-invocation-args) "--")))
 171     (let* ((this-switch (car x-invocation-args))
 172            (orig-this-switch this-switch)
 173            completion argval aelt handler)
 174       (setq x-invocation-args (cdr x-invocation-args))
 175       ;; Check for long options with attached arguments
 176       ;; and separate out the attached option argument into argval.
 177       (if (string-match "^--[^=]*=" this-switch)
 178           (setq argval (substring this-switch (match-end 0))
 179                 this-switch (substring this-switch 0 (1- (match-end 0)))))
 180       ;; Complete names of long options.
 181       (if (string-match "^--" this-switch)
 182           (progn
 183             (setq completion (try-completion this-switch command-line-x-option-alist))
 184             (if (eq completion t)
 185                 ;; Exact match for long option.
 186                 nil
 187               (if (stringp completion)
 188                   (let ((elt (assoc completion command-line-x-option-alist)))
 189                     ;; Check for abbreviated long option.
 190                     (or elt
 191                         (error "Option `%s' is ambiguous" this-switch))
 192                     (setq this-switch completion))))))
 193       (setq aelt (assoc this-switch command-line-x-option-alist))
 194       (if aelt (setq handler (nth 2 aelt)))
 195       (if handler
 196           (if argval
 197               (let ((x-invocation-args
 198                      (cons argval x-invocation-args)))
 199                 (funcall handler this-switch))
 200             (funcall handler this-switch))
 201         (setq args (cons orig-this-switch args)))))
 202   (nconc (nreverse args) x-invocation-args))
 203 \f
 204 ;;
 205 ;; Standard X cursor shapes, courtesy of Mr. Fox, who wanted ALL of them.
 206 ;;
 207
 208 (defconst x-pointer-X-cursor 0)
 209 (defconst x-pointer-arrow 2)
 210 (defconst x-pointer-based-arrow-down 4)
 211 (defconst x-pointer-based-arrow-up 6)
 212 (defconst x-pointer-boat 8)
 213 (defconst x-pointer-bogosity 10)
 214 (defconst x-pointer-bottom-left-corner 12)
 215 (defconst x-pointer-bottom-right-corner 14)
 216 (defconst x-pointer-bottom-side 16)
 217 (defconst x-pointer-bottom-tee 18)
 218 (defconst x-pointer-box-spiral 20)
 219 (defconst x-pointer-center-ptr 22)
 220 (defconst x-pointer-circle 24)
 221 (defconst x-pointer-clock 26)
 222 (defconst x-pointer-coffee-mug 28)
 223 (defconst x-pointer-cross 30)
 224 (defconst x-pointer-cross-reverse 32)
 225 (defconst x-pointer-crosshair 34)
 226 (defconst x-pointer-diamond-cross 36)
 227 (defconst x-pointer-dot 38)
 228 (defconst x-pointer-dotbox 40)
 229 (defconst x-pointer-double-arrow 42)
 230 (defconst x-pointer-draft-large 44)
 231 (defconst x-pointer-draft-small 46)
 232 (defconst x-pointer-draped-box 48)
 233 (defconst x-pointer-exchange 50)
 234 (defconst x-pointer-fleur 52)
 235 (defconst x-pointer-gobbler 54)
 236 (defconst x-pointer-gumby 56)
 237 (defconst x-pointer-hand1 58)
 238 (defconst x-pointer-hand2 60)
 239 (defconst x-pointer-heart 62)
 240 (defconst x-pointer-icon 64)
 241 (defconst x-pointer-iron-cross 66)
 242 (defconst x-pointer-left-ptr 68)
 243 (defconst x-pointer-left-side 70)
 244 (defconst x-pointer-left-tee 72)
 245 (defconst x-pointer-leftbutton 74)
 246 (defconst x-pointer-ll-angle 76)
 247 (defconst x-pointer-lr-angle 78)
 248 (defconst x-pointer-man 80)
 249 (defconst x-pointer-middlebutton 82)
 250 (defconst x-pointer-mouse 84)
 251 (defconst x-pointer-pencil 86)
 252 (defconst x-pointer-pirate 88)
 253 (defconst x-pointer-plus 90)
 254 (defconst x-pointer-question-arrow 92)
 255 (defconst x-pointer-right-ptr 94)
 256 (defconst x-pointer-right-side 96)
 257 (defconst x-pointer-right-tee 98)
 258 (defconst x-pointer-rightbutton 100)
 259 (defconst x-pointer-rtl-logo 102)
 260 (defconst x-pointer-sailboat 104)
 261 (defconst x-pointer-sb-down-arrow 106)
 262 (defconst x-pointer-sb-h-double-arrow 108)
 263 (defconst x-pointer-sb-left-arrow 110)
 264 (defconst x-pointer-sb-right-arrow 112)
 265 (defconst x-pointer-sb-up-arrow 114)
 266 (defconst x-pointer-sb-v-double-arrow 116)
 267 (defconst x-pointer-shuttle 118)
 268 (defconst x-pointer-sizing 120)
 269 (defconst x-pointer-spider 122)
 270 (defconst x-pointer-spraycan 124)
 271 (defconst x-pointer-star 126)
 272 (defconst x-pointer-target 128)
 273 (defconst x-pointer-tcross 130)
 274 (defconst x-pointer-top-left-arrow 132)
 275 (defconst x-pointer-top-left-corner 134)
 276 (defconst x-pointer-top-right-corner 136)
 277 (defconst x-pointer-top-side 138)
 278 (defconst x-pointer-top-tee 140)
 279 (defconst x-pointer-trek 142)
 280 (defconst x-pointer-ul-angle 144)
 281 (defconst x-pointer-umbrella 146)
 282 (defconst x-pointer-ur-angle 148)
 283 (defconst x-pointer-watch 150)
 284 (defconst x-pointer-xterm 152)
 285 \f
 286 ;;
 287 ;; Available colors
 288 ;;
 289
 290 (defvar x-colors '("aquamarine"
 291                    "Aquamarine"
 292                    "medium aquamarine"
 293                    "MediumAquamarine"
 294                    "black"
 295                    "Black"
 296                    "blue"
 297                    "Blue"
 298                    "cadet blue"
 299                    "CadetBlue"
 300                    "cornflower blue"
 301                    "CornflowerBlue"
 302                    "dark slate blue"
 303                    "DarkSlateBlue"
 304                    "light blue"
 305                    "LightBlue"
 306                    "light steel blue"
 307                    "LightSteelBlue"
 308                    "medium blue"
 309                    "MediumBlue"
 310                    "medium slate blue"
 311                    "MediumSlateBlue"
 312                    "midnight blue"
 313                    "MidnightBlue"
 314                    "navy blue"
 315                    "NavyBlue"
 316                    "navy"
 317                    "Navy"
 318                    "sky blue"
 319                    "SkyBlue"
 320                    "slate blue"
 321                    "SlateBlue"
 322                    "steel blue"
 323                    "SteelBlue"
 324                    "coral"
 325                    "Coral"
 326                    "cyan"
 327                    "Cyan"
 328                    "firebrick"
 329                    "Firebrick"
 330                    "brown"
 331                    "Brown"
 332                    "gold"
 333                    "Gold"
 334                    "goldenrod"
 335                    "Goldenrod"
 336                    "green"
 337                    "Green"
 338                    "dark green"
 339                    "DarkGreen"
 340                    "dark olive green"
 341                    "DarkOliveGreen"
 342                    "forest green"
 343                    "ForestGreen"
 344                    "lime green"
 345                    "LimeGreen"
 346                    "medium sea green"
 347                    "MediumSeaGreen"
 348                    "medium spring green"
 349                    "MediumSpringGreen"
 350                    "pale green"
 351                    "PaleGreen"
 352                    "sea green"
 353                    "SeaGreen"
 354                    "spring green"
 355                    "SpringGreen"
 356                    "yellow green"
 357                    "YellowGreen"
 358                    "dark slate grey"
 359                    "DarkSlateGrey"
 360                    "dark slate gray"
 361                    "DarkSlateGray"
 362                    "dim grey"
 363                    "DimGrey"
 364                    "dim gray"
 365                    "DimGray"
 366                    "light grey"
 367                    "LightGrey"
 368                    "light gray"
 369                    "LightGray"
 370                    "gray"
 371                    "grey"
 372                    "Gray"
 373                    "Grey"
 374                    "khaki"
 375                    "Khaki"
 376                    "magenta"
 377                    "Magenta"
 378                    "maroon"
 379                    "Maroon"
 380                    "orange"
 381                    "Orange"
 382                    "orchid"
 383                    "Orchid"
 384                    "dark orchid"
 385                    "DarkOrchid"
 386                    "medium orchid"
 387                    "MediumOrchid"
 388                    "pink"
 389                    "Pink"
 390                    "plum"
 391                    "Plum"
 392                    "red"
 393                    "Red"
 394                    "indian red"
 395                    "IndianRed"
 396                    "medium violet red"
 397                    "MediumVioletRed"
 398                    "orange red"
 399                    "OrangeRed"
 400                    "violet red"
 401                    "VioletRed"
 402                    "salmon"
 403                    "Salmon"
 404                    "sienna"
 405                    "Sienna"
 406                    "tan"
 407                    "Tan"
 408                    "thistle"
 409                    "Thistle"
 410                    "turquoise"
 411                    "Turquoise"
 412                    "dark turquoise"
 413                    "DarkTurquoise"
 414                    "medium turquoise"
 415                    "MediumTurquoise"
 416                    "violet"
 417                    "Violet"
 418                    "blue violet"
 419                    "BlueViolet"
 420                    "wheat"
 421                    "Wheat"
 422                    "white"
 423                    "White"
 424                    "yellow"
 425                    "Yellow"
 426                    "green yellow"
 427                    "GreenYellow")
 428   "The list of X colors from the `rgb.txt' file.")
 429
 430 (defun x-defined-colors (&optional frame)
 431   "Return a list of colors supported for a particular frame.
 432 The argument FRAME specifies which frame to try.
 433 The value may be different for frames on different X displays."
 434   (or frame (setq frame (selected-frame)))
 435   (let ((all-colors x-colors)
 436         (this-color nil)
 437         (defined-colors nil))
 438     (while all-colors
 439       (setq this-color (car all-colors)
 440             all-colors (cdr all-colors))
 441       (and (face-color-supported-p frame this-color t)
 442            (setq defined-colors (cons this-color defined-colors))))
 443     defined-colors))
 444 \f
 445 ;;;; Function keys
 446
 447 (defun iconify-or-deiconify-frame ()
 448   "Iconify the selected frame, or deiconify if it's currently an icon."
 449   (interactive)
 450   (if (eq (cdr (assq 'visibility (frame-parameters))) t)
 451       (iconify-frame)
 452     (make-frame-visible)))
 453
 454 (substitute-key-definition 'suspend-emacs 'iconify-or-deiconify-frame
 455                            global-map)
 456
 457 ;; Map certain keypad keys into ASCII characters
 458 ;; that people usually expect.
 459 (define-key function-key-map [backspace] [127])
 460 (define-key function-key-map [delete] [127])
 461 (define-key function-key-map [tab] [?\t])
 462 (define-key function-key-map [linefeed] [?\n])
 463 (define-key function-key-map [clear] [?\C-l])
 464 (define-key function-key-map [return] [?\C-m])
 465 (define-key function-key-map [escape] [?\e])
 466 (define-key function-key-map [M-backspace] [?\M-\d])
 467 (define-key function-key-map [M-delete] [?\M-\d])
 468 (define-key function-key-map [M-tab] [?\M-\t])
 469 (define-key function-key-map [M-linefeed] [?\M-\n])
 470 (define-key function-key-map [M-clear] [?\M-\C-l])
 471 (define-key function-key-map [M-return] [?\M-\C-m])
 472 (define-key function-key-map [M-escape] [?\M-\e])
 473
 474 ;; These tell read-char how to convert
 475 ;; these special chars to ASCII.
 476 (put 'backspace 'ascii-character 127)
 477 (put 'delete 'ascii-character 127)
 478 (put 'tab 'ascii-character ?\t)
 479 (put 'linefeed 'ascii-character ?\n)
 480 (put 'clear 'ascii-character 12)
 481 (put 'return 'ascii-character 13)
 482 (put 'escape 'ascii-character ?\e)
 483
 484 (defun vendor-specific-keysyms (vendor)
 485   "Return the appropriate value of system-key-alist for VENDOR.
 486 VENDOR is a string containing the name of the X Server's vendor,
 487 as returned by (x-server-vendor)."
 488   (cond ((string-equal vendor "Apollo Computer Inc.")
 489          '((65280 . linedel)
 490            (65281 . chardel)
 491            (65282 . copy)
 492            (65283 . cut)
 493            (65284 . paste)
 494            (65285 . move)
 495            (65286 . grow)
 496            (65287 . cmd)
 497            (65288 . shell)
 498            (65289 . leftbar)
 499            (65290 . rightbar)
 500            (65291 . leftbox)
 501            (65292 . rightbox)
 502            (65293 . upbox)
 503            (65294 . downbox)
 504            (65295 . pop)
 505            (65296 . read)
 506            (65297 . edit)
 507            (65298 . save)
 508            (65299 . exit)
 509            (65300 . repeat)))
 510         ((or (string-equal vendor "Hewlett-Packard Incorporated")
 511              (string-equal vendor "Hewlett-Packard Company"))
 512          '((  168 . mute-acute)
 513            (  169 . mute-grave)
 514            (  170 . mute-asciicircum)
 515            (  171 . mute-diaeresis)
 516            (  172 . mute-asciitilde)
 517            (  175 . lira)
 518            (  190 . guilder)
 519            (  252 . block)
 520            (  256 . longminus)
 521            (65388 . reset)
 522            (65389 . system)
 523            (65390 . user)
 524            (65391 . clearline)
 525            (65392 . insertline)
 526            (65393 . deleteline)
 527            (65394 . insertchar)
 528            (65395 . deletechar)
 529            (65396 . backtab)
 530            (65397 . kp-backtab)))
 531         ((or (string-equal vendor "X11/NeWS - Sun Microsystems Inc.")
 532              (string-equal vendor "X Consortium"))
 533          '((392976 . f36)
 534            (392977 . f37)
 535            (393056 . req)
 536            ;; These are for Sun under X11R6
 537            (393072 . props)
 538            (393073 . front)
 539            (393074 . copy)
 540            (393075 . open)
 541            (393076 . paste)
 542            (393077 . cut)))
 543         (t
 544          ;; This is used by DEC's X server.
 545          '((65280 . remove)))))
 546
 547 \f
 548 ;;;; Selections and cut buffers
 549
 550 ;;; We keep track of the last text selected here, so we can check the
 551 ;;; current selection against it, and avoid passing back our own text
 552 ;;; from x-cut-buffer-or-selection-value.
 553 (defvar x-last-selected-text nil)
 554
 555 ;;; It is said that overlarge strings are slow to put into the cut buffer.
 556 ;;; Note this value is overridden below.
 557 (defvar x-cut-buffer-max 20000
 558   "Max number of characters to put in the cut buffer.")
 559
 560 (defvar x-select-enable-clipboard nil
 561   "Non-nil means cutting and pasting uses the clipboard.
 562 This is in addition to the primary selection.")
 563
 564 ;;; Make TEXT, a string, the primary X selection.
 565 ;;; Also, set the value of X cut buffer 0, for backward compatibility
 566 ;;; with older X applications.
 567 ;;; gildea@lcs.mit.edu says it's not desirable to put kills
 568 ;;; in the clipboard.
 569 (defun x-select-text (text &optional push)
 570   ;; Don't send the cut buffer too much text.
 571   ;; It becomes slow, and if really big it causes errors.
 572   (if (< (length text) x-cut-buffer-max)
 573       (x-set-cut-buffer text push)
 574     (x-set-cut-buffer "" push))
 575   (x-set-selection 'PRIMARY text)
 576   (if x-select-enable-clipboard
 577       (x-set-selection 'CLIPBOARD text))
 578   (setq x-last-selected-text text))
 579
 580 ;;; Return the value of the current X selection.
 581 ;;; Consult the selection, then the cut buffer.  Treat empty strings
 582 ;;; as if they were unset.
 583 (defun x-cut-buffer-or-selection-value ()
 584   (let (text)
 585
 586     ;; Don't die if x-get-selection signals an error.
 587     (condition-case c
 588         (setq text (x-get-selection 'PRIMARY))
 589       (error nil))
 590     (if (string= text "") (setq text nil))
 591
 592     (if x-select-enable-clipboard
 593         (condition-case c
 594             (setq text (x-get-selection 'CLIPBOARD))
 595           (error nil)))
 596     (if (string= text "") (setq text nil))
 597     (or text (setq text (x-get-cut-buffer 0)))
 598     (if (string= text "") (setq text nil))
 599
 600     (cond
 601      ((not text) nil)
 602      ((eq text x-last-selected-text) nil)
 603      ((string= text x-last-selected-text)
 604       ;; Record the newer string, so subsequent calls can use the `eq' test.
 605       (setq x-last-selected-text text)
 606       nil)
 607      (t
 608       (setq x-last-selected-text text)))))
 609
 610 \f
 611 ;;; Do the actual X Windows setup here; the above code just defines
 612 ;;; functions and variables that we use now.
 613
 614 (setq command-line-args (x-handle-args command-line-args))
 615
 616 ;;; Make sure we have a valid resource name.
 617 (or (stringp x-resource-name)
 618     (let (i)
 619       (setq x-resource-name (invocation-name))
 620
 621       ;; Change any . or * characters in x-resource-name to hyphens,
 622       ;; so as not to choke when we use it in X resource queries.
 623       (while (setq i (string-match "[.*]" x-resource-name))
 624         (aset x-resource-name i ?-))))
 625
 626 ;; For the benefit of older Emacses (19.27 and earlier) that are sharing
 627 ;; the same lisp directory, don't pass the third argument unless we seem
 628 ;; to have the multi-display support.
 629 (if (fboundp 'x-close-connection)
 630     (x-open-connection (or x-display-name
 631                            (setq x-display-name (getenv "DISPLAY")))
 632                        x-command-line-resources
 633                        ;; Exit Emacs with fatal error if this fails.
 634                        t)
 635   (x-open-connection (or x-display-name
 636                          (setq x-display-name (getenv "DISPLAY")))
 637                      x-command-line-resources))
 638
 639 (setq frame-creation-function 'x-create-frame-with-faces)
 640
 641 (setq x-cut-buffer-max (min (- (/ (x-server-max-request-size) 2) 100)
 642                             x-cut-buffer-max))
 643
 644 ;; Create a default fontset.
 645 (create-fontset-from-fontset-spec default-fontset-spec)
 646
 647 ;; Create fontset specified in X resources.
 648 (create-fontset-from-x-resource)
 649
 650 ;; Try to create a fontset from font specification which comes from
 651 ;; initial-frame-alist, default-frame-alist, or X resource if the font
 652 ;; name conforms to XLFD and the registry part is `fontset'.  A font
 653 ;; specification in command line argument (-fn XXXX) should be in
 654 ;; default-frame-alist already.  However, any font specification in
 655 ;; site-start library, user's init file (.emacs), and default.el are
 656 ;; not yet handled here.
 657
 658 (let ((font (or (cdr (assq 'font initial-frame-alist))
 659                 (cdr (assq 'font default-frame-alist))
 660                 (x-get-resource "font" "Font")
 661                 (x-get-resource "fontset" "Fontset")))
 662       xlfd-fields fontlist)
 663   (if (and font
 664            (not (query-fontset font))
 665            (setq xlfd-fields (x-decompose-font-name font)))
 666       (progn
 667         (if (not (string= "fontset"
 668                           (aref xlfd-fields xlfd-regexp-registry-subnum)))
 669             (progn
 670               ;; Create a fontset of the name FONT.
 671               (setq fontlist (list (cons 'ascii font)))
 672               (aset xlfd-fields xlfd-regexp-foundry-subnum nil)
 673               (aset xlfd-fields xlfd-regexp-family-subnum nil)
 674               (aset xlfd-fields xlfd-regexp-adstyle-subnum nil)
 675               (aset xlfd-fields xlfd-regexp-avgwidth-subnum nil)))
 676         (new-fontset font (x-complement-fontset-spec xlfd-fields fontlist)))))
 677
 678 ;; Sun expects the menu bar cut and paste commands to use the clipboard.
 679 ;; This has ,? to match both on Sunos and on Solaris.
 680 (if (string-match "Sun Microsystems,? Inc\\."
 681                   (x-server-vendor))
 682     (menu-bar-enable-clipboard))
 683
 684 ;; Apply a geometry resource to the initial frame.  Put it at the end
 685 ;; of the alist, so that anything specified on the command line takes
 686 ;; precedence.
 687 (let* ((res-geometry (x-get-resource "geometry" "Geometry"))
 688        parsed)
 689   (if res-geometry
 690       (progn
 691         (setq parsed (x-parse-geometry res-geometry))
 692         ;; If the resource specifies a position,
 693         ;; call the position and size "user-specified".
 694         (if (or (assq 'top parsed) (assq 'left parsed))
 695             (setq parsed (cons '(user-position . t)
 696                                (cons '(user-size . t) parsed))))
 697         ;; All geometry parms apply to the initial frame.
 698         (setq initial-frame-alist (append initial-frame-alist parsed))
 699         ;; The size parms apply to all frames.
 700         (if (assq 'height parsed)
 701             (setq default-frame-alist
 702                   (cons (cons 'height (cdr (assq 'height parsed)))
 703                         default-frame-alist)))
 704         (if (assq 'width parsed)
 705             (setq default-frame-alist
 706                   (cons (cons 'width (cdr (assq 'width parsed)))
 707                         default-frame-alist))))))
 708
 709 ;; Check the reverseVideo resource.
 710 (let ((case-fold-search t))
 711   (let ((rv (x-get-resource "reverseVideo" "ReverseVideo")))
 712     (if (and rv
 713              (string-match "^\\(true\\|yes\\|on\\)$" rv))
 714         (setq default-frame-alist
 715               (cons '(reverse . t) default-frame-alist)))))
 716
 717 ;; Set x-selection-timeout, measured in milliseconds.
 718 (let ((res-selection-timeout
 719        (x-get-resource "selectionTimeout" "SelectionTimeout")))
 720   (setq x-selection-timeout 20000)
 721   (if res-selection-timeout
 722       (setq x-selection-timeout (string-to-number res-selection-timeout))))
 723
 724 (defun x-win-suspend-error ()
 725   (error "Suspending an emacs running under X makes no sense"))
 726 (add-hook 'suspend-hook 'x-win-suspend-error)
 727
 728 ;;; Arrange for the kill and yank functions to set and check the clipboard.
 729 (setq interprogram-cut-function 'x-select-text)
 730 (setq interprogram-paste-function 'x-cut-buffer-or-selection-value)
 731
 732 ;;; Turn off window-splitting optimization; X is usually fast enough
 733 ;;; that this is only annoying.
 734 (setq split-window-keep-point t)
 735
 736 ;; Don't show the frame name; that's redundant with X.
 737 (setq-default mode-line-buffer-identification '("Emacs: %12b"))
 738
 739 ;;; Motif direct handling of f10 wasn't working right,
 740 ;;; So temporarily we've turned it off in lwlib-Xm.c
 741 ;;; and turned the Emacs f10 back on.
 742 ;;; ;; Motif normally handles f10 itself, so don't try to handle it a second time.
 743 ;;; (if (featurep 'motif)
 744 ;;;     (global-set-key [f10] 'ignore))
 745
 746 ;;; x-win.el ends here