;;; x-init.el --- initialization code for X windows

;; Copyright (C) 1990, 1993, 1994, 1997 Free Software Foundation, Inc.
;; Copyright (C) 1995 Board of Trustees, University of Illinois.
;; Copyright (C) 1995, 1996 Ben Wing.

;; Maintainer: XEmacs Development Team
;; Keywords: terminals, dumped

;; This file is part of XEmacs.

;; XEmacs 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.

;; XEmacs 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 XEmacs; see the file COPYING.  If not, write to the
;; Free Software Foundation, 59 Temple Place - Suite 330,
;; Boston, MA 02111-1307, USA.

;;; Synched up with: Not synched.

;;; Commentary:

;; This file is dumped with XEmacs (when X support is compiled in).

;;; Code:

(globally-declare-fboundp
 '(x-keysym-on-keyboard-p
   x-server-vendor x-init-specifier-from-resources init-mule-x-win))

(globally-declare-boundp
 '(x-initial-argv-list))

;; If you want to change this variable, this is the place you must do it.
;; Do not set it to a string containing periods.  X doesn't like that.
;(setq x-emacs-application-class "Emacs")

(defgroup x nil
  "The X Window system."
  :group 'environment)

;; OpenWindows-like "find" processing.  These functions are really Sunisms,
;; but we put them here instead of in x-win-sun.el in case someone wants
;; to use them when not running on a Sun console (presumably after binding
;; them to different keys, or putting them on menus.)

(defvar ow-find-last-string nil)
(defvar ow-find-last-clipboard nil)

(defun ow-find (&optional backward-p)
  "Search forward the next occurrence of the text of the selection."
  (interactive)
  (let ((sel  (ignore-errors (get-selection)))
	(clip (ignore-errors (get-clipboard)))
	text)
    (setq text (cond
		(sel)
		((not (equal clip ow-find-last-clipboard))
		 (setq ow-find-last-clipboard clip))
		(ow-find-last-string)
		(t (error "No selection available"))))
    (setq ow-find-last-string text)
    (cond (backward-p
	   (search-backward text)
	   (set-mark (+ (point) (length text))))
	  (t
	   (search-forward text)
	   (set-mark (- (point) (length text)))))
    (zmacs-activate-region)))

(defun ow-find-backward ()
  "Search backward for the previous occurrence of the text of the selection."
  (interactive)
  (ow-find t))

;; Load X-server specific code.
;; Specifically, load some code to repair the grievous damage that MIT and
;; Sun have done to the default keymap for the Sun keyboards.

(eval-when-compile
  (defmacro x-define-dead-key (key map)
    `(when (x-keysym-on-keyboard-p ',key)
       (define-key function-key-map [,key] ',map))))

(defun x-initialize-compose ()
  "Enable compose key and dead key processing."
  (autoload 'compose-map	    "x-compose" nil t 'keymap)
  (autoload 'compose-acute-map	    "x-compose" nil t 'keymap)
  (autoload 'compose-grave-map	    "x-compose" nil t 'keymap)
  (autoload 'compose-cedilla-map    "x-compose" nil t 'keymap)
  (autoload 'compose-diaeresis-map  "x-compose" nil t 'keymap)
  (autoload 'compose-circumflex-map "x-compose" nil t 'keymap)
  (autoload 'compose-tilde-map	    "x-compose" nil t 'keymap)

  (when (x-keysym-on-keyboard-p 'multi-key)
    (define-key function-key-map [multi-key] 'compose-map))

  ;; The dead keys might really be called just about anything, depending
  ;; on the vendor.  MIT thinks that the prefixes are "SunFA_", "D", and
  ;; "hpmute_" for Sun, DEC, and HP respectively.  However, OpenWindows 3
  ;; thinks that the prefixes are "SunXK_FA_", "DXK_", and "hpXK_mute_".
  ;; And HP (who don't mention Sun and DEC at all) use "XK_mute_".
  ;; Go figure.

  ;; Presumably if someone is running OpenWindows, they won't be using
  ;; the DEC or HP keysyms, but if they are defined then that is possible,
  ;; so in that case we accept them all.

  ;; If things seem not to be working, you might want to check your
  ;; /usr/lib/X11/XKeysymDB file to see if your vendor has an equally
  ;; mixed up view of what these keys should be called.

  ;; Canonical names:
  (x-define-dead-key acute			compose-acute-map)
  (x-define-dead-key grave			compose-grave-map)
  (x-define-dead-key cedilla			compose-cedilla-map)
  (x-define-dead-key diaeresis			compose-diaeresis-map)
  (x-define-dead-key circumflex			compose-circumflex-map)
  (x-define-dead-key tilde			compose-tilde-map)
  (x-define-dead-key degree			compose-ring-map)

  ;; Sun according to MIT:
  (x-define-dead-key SunFA_Acute		compose-acute-map)
  (x-define-dead-key SunFA_Grave		compose-grave-map)
  (x-define-dead-key SunFA_Cedilla		compose-cedilla-map)
  (x-define-dead-key SunFA_Diaeresis		compose-diaeresis-map)
  (x-define-dead-key SunFA_Circum		compose-circumflex-map)
  (x-define-dead-key SunFA_Tilde		compose-tilde-map)

  ;; Sun according to OpenWindows 2:
  (x-define-dead-key Dead_Grave			compose-grave-map)
  (x-define-dead-key Dead_Circum		compose-circumflex-map)
  (x-define-dead-key Dead_Tilde			compose-tilde-map)

  ;; Sun according to OpenWindows 3:
  (x-define-dead-key SunXK_FA_Acute		compose-acute-map)
  (x-define-dead-key SunXK_FA_Grave		compose-grave-map)
  (x-define-dead-key SunXK_FA_Cedilla		compose-cedilla-map)
  (x-define-dead-key SunXK_FA_Diaeresis		compose-diaeresis-map)
  (x-define-dead-key SunXK_FA_Circum		compose-circumflex-map)
  (x-define-dead-key SunXK_FA_Tilde		compose-tilde-map)

  ;; DEC according to MIT:
  (x-define-dead-key Dacute_accent		compose-acute-map)
  (x-define-dead-key Dgrave_accent		compose-grave-map)
  (x-define-dead-key Dcedilla_accent		compose-cedilla-map)
  (x-define-dead-key Dcircumflex_accent		compose-circumflex-map)
  (x-define-dead-key Dtilde			compose-tilde-map)
  (x-define-dead-key Dring_accent		compose-ring-map)

  ;; DEC according to OpenWindows 3:
  (x-define-dead-key DXK_acute_accent		compose-acute-map)
  (x-define-dead-key DXK_grave_accent		compose-grave-map)
  (x-define-dead-key DXK_cedilla_accent		compose-cedilla-map)
  (x-define-dead-key DXK_circumflex_accent	compose-circumflex-map)
  (x-define-dead-key DXK_tilde			compose-tilde-map)
  (x-define-dead-key DXK_ring_accent		compose-ring-map)

  ;; HP according to MIT:
  (x-define-dead-key hpmute_acute		compose-acute-map)
  (x-define-dead-key hpmute_grave		compose-grave-map)
  (x-define-dead-key hpmute_diaeresis		compose-diaeresis-map)
  (x-define-dead-key hpmute_asciicircum		compose-circumflex-map)
  (x-define-dead-key hpmute_asciitilde		compose-tilde-map)

  ;; Empirically discovered on Linux XFree86 MetroX:
  (x-define-dead-key usldead_acute		compose-acute-map)
  (x-define-dead-key usldead_grave		compose-grave-map)
  (x-define-dead-key usldead_diaeresis		compose-diaeresis-map)
  (x-define-dead-key usldead_asciicircum	compose-circumflex-map)
  (x-define-dead-key usldead_asciitilde		compose-tilde-map)

  ;; HP according to OpenWindows 3:
  (x-define-dead-key hpXK_mute_acute		compose-acute-map)
  (x-define-dead-key hpXK_mute_grave		compose-grave-map)
  (x-define-dead-key hpXK_mute_diaeresis	compose-diaeresis-map)
  (x-define-dead-key hpXK_mute_asciicircum	compose-circumflex-map)
  (x-define-dead-key hpXK_mute_asciitilde	compose-tilde-map)

  ;; HP according to HP-UX 8.0:
  (x-define-dead-key XK_mute_acute		compose-acute-map)
  (x-define-dead-key XK_mute_grave		compose-grave-map)
  (x-define-dead-key XK_mute_diaeresis		compose-diaeresis-map)
  (x-define-dead-key XK_mute_asciicircum	compose-circumflex-map)
  (x-define-dead-key XK_mute_asciitilde		compose-tilde-map)

  ;; [[ XFree86 seems to use lower case and a hyphen ]] Not true; they use
  ;; lower case and an underscore. XEmacs converts the underscore to a
  ;; hyphen in x_keysym_to_emacs_keysym because the keysym is in the
  ;; "Keyboard" character set, which is just totally fucking random,
  ;; considering it doesn't happen for any other character sets. 
  (x-define-dead-key dead-acute			compose-acute-map)
  (x-define-dead-key dead-grave			compose-grave-map)
  (x-define-dead-key dead-cedilla		compose-cedilla-map)
  (x-define-dead-key dead-diaeresis		compose-diaeresis-map)
  (x-define-dead-key dead-circum		compose-circumflex-map)
  (x-define-dead-key dead-circumflex		compose-circumflex-map)
  (x-define-dead-key dead-tilde			compose-tilde-map)
  )

(eval-when-compile
  (load "x-win-sun"     nil t)
  (load "x-win-xfree86" nil t))

(defun x-initialize-keyboard ()
  "Perform X-Server-specific initializations.  Don't call this."
  ;; This is some heuristic junk that tries to guess whether this is
  ;; a Sun keyboard.
  ;;
  ;; One way of implementing this (which would require C support) would
  ;; be to examine the X keymap itself and see if the layout looks even
  ;; remotely like a Sun - check for the Find key on a particular
  ;; keycode, for example.  It'd be nice to have a table of this to
  ;; recognize various keyboards; see also xkeycaps.
  ;;
  ;; Note that we cannot use most vendor-provided proprietary keyboard
  ;; APIs to identify the keyboard - those only work on the console.
  ;; xkeycaps has the same problem when running `remotely'.
  (let ((vendor (x-server-vendor)))
    (cond ((or (string-match "Sun Microsystems" vendor)
	       ;; MIT losingly fails to tell us what hardware the X server
	       ;; is managing, so assume all MIT displays are Suns...  HA HA!
	       (string-equal "MIT X Consortium" vendor)
	       (string-equal "X Consortium" vendor))
           ;; Ok, we think this could be a Sun keyboard.  Run the Sun code.
	   (x-win-init-sun))
          ((string-match "XFree86" vendor)
           ;; Those XFree86 people do some weird keysym stuff, too.
	   (x-win-init-xfree86))))
  ;; Perhaps tell people that some keys won't work. 
  ;;
  ;; If they remap while XEmacs is running and this problem arises, they
  ;; won't see the messages. Which should be okay, assuming the length of
  ;; time before we get a Unicode-compatible internal encoding is relatively
  ;; short.
  (let (unknown-code-points sym-string)
    (dolist (x-keysym (hash-table-key-list (x-keysym-hash-table)))
      (setq sym-string (if (stringp x-keysym) x-keysym (symbol-name x-keysym)))
      (when (and (not (get (intern sym-string) 'character-of-keysym))
		 (string-match "^U[0-9A-F]+$" sym-string))
	(pushnew (concat sym-string " ") unknown-code-points :test 'equal)))
    (when unknown-code-points
      (lwarn 'key-mapping 'info
      "Undefined Unicode key mappings.
Your keyboard has, among many others, the following keysyms defined:

%s
The standards say that applications should interpret these keysyms as
representing the corresponding Unicode code points (e.g. U2720 should
represent MALTESE CROSS), but unfortunately the current version of XEmacs
has no support for many of those characters in its internal encoding, and
when it encounters the keysyms corresponding to those characters, they
remain unbound.

See the documentation for `unicode-to-char' for one technique if you have an
urgent need for support for one of those characters--you probably don't,
most of the widely-used characters have mappings in the internal XEmacs
encoding--otherwise, wait until we ship a version with an internal encoding
based on Unicode.  "
      (with-string-as-buffer-contents (apply 'concat "    " 
					     unknown-code-points)
	(setq fill-prefix "    ")
	(fill-paragraph nil))))))


;; Moved from x-toolbar.el, since InfoDock doesn't dump x-toolbar.el.
(defun x-init-toolbar-from-resources (locale)
  (loop for (specifier . resname) in
    `((   ,top-toolbar-height       .    "topToolBarHeight")
      (,bottom-toolbar-height       . "bottomToolBarHeight")
      (  ,left-toolbar-width        .   "leftToolBarWidth")
      ( ,right-toolbar-width        .  "rightToolBarWidth")

      (   ,top-toolbar-border-width .    "topToolBarBorderWidth")
      (,bottom-toolbar-border-width . "bottomToolBarBorderWidth")
      (  ,left-toolbar-border-width .   "leftToolBarBorderWidth")
      ( ,right-toolbar-border-width .  "rightToolBarBorderWidth"))
    do
    (x-init-specifier-from-resources
     specifier 'natnum locale (cons resname (upcase-initials resname)))))

(defvar pre-x-win-initted nil)

(defun init-pre-x-win ()
  "Initialize X Windows at startup (pre).  Don't call this."
  (when (not pre-x-win-initted)
    (setq initial-frame-plist (if initial-frame-unmapped-p
                                  '(initially-unmapped t)
                                nil))
    (setq pre-x-win-initted t)))

(defvar x-win-initted nil)

(defun init-x-win ()
  "Initialize X Windows at startup.  Don't call this."
  (when (not x-win-initted)
    (defvar x-app-defaults-directory)
    (init-pre-x-win)
    (if (featurep 'mule) (init-mule-x-win))

    ;; Open the X display when this file is loaded
    ;; (Note that the first frame is created later.)
    (setq x-initial-argv-list (cons (car command-line-args)
                                    command-line-args-left))
    ;; Locate the app-defaults directory
    (when (and (boundp 'x-app-defaults-directory)
	       (null x-app-defaults-directory))
      (setq x-app-defaults-directory
	    (locate-data-directory "app-defaults")))
    (make-x-device nil)
    (setq command-line-args-left (cdr x-initial-argv-list))
    (setq x-win-initted t)))

(defvar post-x-win-initted nil)

(defun init-post-x-win ()
  "Initialize X Windows at startup (post).  Don't call this."
  (when (not post-x-win-initted)
    ;(if (featurep 'mule) (init-mule-x-win))
    ;; Motif-ish bindings
    ;; The following two were generally unliked.
    ;;(define-key global-map '(shift delete)   'kill-primary-selection)
    ;;(define-key global-map '(control delete) 'delete-primary-selection)
    (define-key global-map '(shift insert)   'yank-clipboard-selection)
    (define-key global-map '(control insert) 'copy-primary-selection)
    ;; These are Sun-isms.
    (define-key global-map 'copy	'copy-primary-selection)
    (define-key global-map 'paste	'yank-clipboard-selection)
    (define-key global-map 'cut		'kill-primary-selection)

    ;;(define-key global-map '(shift menu) 'x-goto-menubar) ;NYI

    (setq post-x-win-initted t)))

;;; Keyboard initialization needs to be done differently for each X
;;; console, so use create-console-hook.
(when (featurep 'x)
  (add-hook
   'create-console-hook
   (lambda (console)
     (letf (((selected-console) console))
       (when (eq 'x (console-type console))
	 (x-initialize-keyboard)
	 (x-initialize-compose))))))

(defun make-frame-on-display (display &optional props)
  "Create a frame on the X display named DISPLAY.
DISPLAY should be a standard display string such as \"unix:0\",
or nil for the display specified on the command line or in the
DISPLAY environment variable.

PROPS should be a plist of properties, as in the call to `make-frame'.

This function opens a connection to the display or reuses an existing
connection.

This function is a trivial wrapper around `make-frame-on-device'."
  (interactive "sMake frame on display: ")
  (if (equal display "") (setq display nil))
  (make-frame-on-device 'x display props))

;; Character 160 (octal 0240) displays incorrectly under X apparently
;; due to a universally crocked font width specification.  Display it
;; as a space since that's what seems to be expected.
;;
;; (make-vector 256 nil) instead of (make-display-table) because
;; make-display-table doesn't exist when this file is loaded.

(let ((tab (make-vector 256 nil)))
  (aset tab 160 " ")
  (set-specifier current-display-table tab 'global 'x))

;;; x-init.el ends here
