X-Git-Url: https://code.delx.au/gnu-emacs/blobdiff_plain/cbbfbaef4438ecadcff38987935b0edab17570b4..e7399dcc7256ba7bbde1491e68417f0804a60438:/lisp/term/x-win.el

diff --git a/lisp/term/x-win.el b/lisp/term/x-win.el
index 53cc73540f..7632905ce5 100644
--- a/lisp/term/x-win.el
+++ b/lisp/term/x-win.el
@@ -1,23 +1,26 @@
-;; Parse switches controlling how Emacs interfaces with X window system.
-;; Copyright (C) 1990 Free Software Foundation, Inc.
-
-;; This file is part of GNU Emacs.
-
-;; GNU Emacs is distributed in the hope that it will be useful,
-;; but WITHOUT ANY WARRANTY.  No author or distributor
-;; accepts responsibility to anyone for the consequences of using it
-;; or for whether it serves any particular purpose or works at all,
-;; unless he says so in writing.  Refer to the GNU Emacs General Public
-;; License for full details.
-
-;; Everyone is granted permission to copy, modify and redistribute
-;; GNU Emacs, but only under the conditions described in the
-;; GNU Emacs General Public License.   A copy of this license is
-;; supposed to have been given to you along with GNU Emacs so you
-;; can know your rights and responsibilities.  It should be in a
-;; file named COPYING.  Among other things, the copyright notice
-;; and this notice must be preserved on all copies.
-
+;;; x-win.el --- parse switches controlling interface with X window system
+;; Copyright (C) 1993, 1994 Free Software Foundation, Inc.
+
+;; Author: FSF
+;; Keywords: terminals
+
+;;; 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.
+
+;;; Commentary:
 
 ;; 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
@@ -26,6 +29,8 @@
 
 ;; startup.el will then examine startup files, and eventually call the hooks
 ;; which create the first window (s).
+
+;;; Code:
 
 ;; These are the standard X switches from the Xt Initialize.c file of
 ;; Release 4.
@@ -46,36 +51,46 @@
 ;; -font		*font
 ;; -foreground		*foreground
 ;; -geometry		.geometry
+;; -i			.iconType
+;; -itype		.iconType
 ;; -iconic		.iconic
 ;; -name		.name
 ;; -reverse		*reverseVideo
 ;; -rv			*reverseVideo
 ;; -selectionTimeout    .selectionTimeout
 ;; -synchronous		*synchronous
-;; -title		.title
 ;; -xrm
 
 ;; An alist of X options and the function which handles them.  See
 ;; ../startup.el.
 
 (if (not (eq window-system 'x))
-    (error "Loading x-win.el but not compiled for X"))
+    (error "%s: Loading x-win.el but not compiled for X" (invocation-name)))
 	 
 (require 'frame)
 (require 'mouse)
+(require 'scroll-bar)
+(require 'faces)
+(require 'select)
+(require 'menu-bar)
+
+(defvar x-invocation-args)
+
+(defvar x-command-line-resources nil)
 
 (setq command-switch-alist
       (append '(("-bw" .	x-handle-numeric-switch)
 		("-d" .		x-handle-display)
 		("-display" .	x-handle-display)
-		("-name" .	x-handle-switch)
+		("-name" .	x-handle-name-rn-switch)
+		("-rn" .	x-handle-name-rn-switch)
 		("-T" .		x-handle-switch)
 		("-r" .		x-handle-switch)
 		("-rv" .	x-handle-switch)
 		("-reverse" .	x-handle-switch)
 		("-fn" .	x-handle-switch)
 		("-font" .	x-handle-switch)
-		("-ib" .	x-handle-switch)
+		("-ib" .	x-handle-numeric-switch)
 		("-g" .		x-handle-geometry)
 		("-geometry" .	x-handle-geometry)
 		("-fg" .	x-handle-switch)
@@ -83,8 +98,10 @@
 		("-bg" .	x-handle-switch)
 		("-background".	x-handle-switch)
 		("-ms" .	x-handle-switch)
-		("-ib" .	x-handle-switch)
-		("-iconic" .	x-handle-switch)
+		("-itype" .	x-handle-switch)
+		("-i" 	.	x-handle-switch)
+		("-iconic" .	x-handle-iconic)
+		("-xrm" .       x-handle-xrm-switch)
 		("-cr" .	x-handle-switch)
 		("-vb" .	x-handle-switch)
 		("-hb" .	x-handle-switch)
@@ -94,9 +111,9 @@
 (defconst x-switch-definitions
   '(("-name" name)
     ("-T" name)
-    ("-r" lose)
-    ("-rv" lose)
-    ("-reverse" lose)
+    ("-r" reverse t)
+    ("-rv" reverse t)
+    ("-reverse" reverse t)
     ("-fn" font)
     ("-font" font)
     ("-ib" internal-border-width)
@@ -106,10 +123,10 @@
     ("-background" background-color)
     ("-ms" mouse-color)
     ("-cr" cursor-color)
-    ("-ib" icon-type t)
-    ("-iconic" iconic-startup t)
-    ("-vb" vertical-scroll-bar t)
-    ("-hb" horizontal-scroll-bar t)
+    ("-itype" icon-type t)
+    ("-i" icon-type t)
+    ("-vb" vertical-scroll-bars t)
+    ("-hb" horizontal-scroll-bars t)
     ("-bd" border-color)
     ("-bw" border-width)))
 
@@ -127,6 +144,11 @@
 		      default-frame-alist)
 		x-invocation-args (cdr x-invocation-args))))))
 
+;; Make -iconic apply only to the initial frame!
+(defun x-handle-iconic (switch)
+  (setq initial-frame-alist
+	(cons '(visibility . icon) initial-frame-alist)))
+
 ;; Handler for switches of the form "-switch n"
 (defun x-handle-numeric-switch (switch)
   (let ((aelt (assoc switch x-switch-definitions)))
@@ -138,11 +160,36 @@
 	      x-invocation-args
 	      (cdr x-invocation-args)))))
 
+;; 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))
+  (setq x-command-line-resources (car x-invocation-args))
+  (setq x-invocation-args (cdr x-invocation-args)))
+
 ;; Handle the geometry option
 (defun x-handle-geometry (switch)
-  (setq initial-frame-alist (append initial-frame-alist
-				     (x-geometry (car x-invocation-args)))
-	x-invocation-args (cdr x-invocation-args)))
+  (let ((geo (x-parse-geometry (car x-invocation-args))))
+    (setq initial-frame-alist
+	  (append initial-frame-alist
+		  (if (or (assq 'left geo) (assq 'top geo))
+		      '((user-position . t)))
+		  (if (or (assq 'height geo) (assq 'width geo))
+		      '((user-size . t)))
+		  geo)
+	  x-invocation-args (cdr x-invocation-args))))
+
+;; 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))))
 
 (defvar x-display-name nil
   "The X display name specifying server and X frame.")
@@ -154,11 +201,11 @@
 (defvar x-invocation-args nil)
 
 (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
+  "Process the X-related command line options in ARGS.
+This is done 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).
+\(e.g., \"black\") in the option handler code (e.g., x-handle-switch).
 This returns ARGS with the arguments that have been processed removed."
   (setq x-invocation-args args
 	args nil)
@@ -411,83 +458,209 @@ This returns ARGS with the arguments that have been processed removed."
     (while all-colors
       (setq this-color (car all-colors)
 	    all-colors (cdr all-colors))
-      (and (x-defined-color this-color)
+      (and (x-color-defined-p this-color)
 	   (setq defined-colors (cons this-color defined-colors))))
     defined-colors))
 
-(defvar scroll-bar-mode nil)
-
-;;; ??? x-create-screen needs to be changed to use scroll-bar-mode
-;;; to decide (by default) whether to make a scroll bar.
-(defun scroll-bar-mode (flag)
-  "Toggle display of vertical scroll bars on each frame.
-This command applies to all frames that exist and frames to be
-created in the future.
-With a numeric argument, if the argument is negative,
-turn off scroll bars; otherwise, turn on scroll bars."
-  (interactive "P")
-  (setq scroll-bar-mode (if (null flag) (not scroll-bar-mode)
-			  (or (not (numberp flag)) (>= flag 0))))
-  (let ((frames (frame-list)))
-    (while frames
-      (modify-frame-parameters (car frames)
-			       (list (cons 'vertical-scrollbar scroll-bar-mode)))
-      (setq frames (cdr frames)))))
-
 ;;;; Function keys
 
-;;; Give some common function keys reasonable definitions.
-(define-key global-map [home] 'beginning-of-line)
-(define-key global-map [left] 'backward-char)
-(define-key global-map [up] 'previous-line)
-(define-key global-map [right] 'forward-char)
-(define-key global-map [down] 'next-line)
-(define-key global-map [prior] 'scroll-down)
-(define-key global-map [next] 'scroll-up)
-(define-key global-map [M-next] 'scroll-other-window)
-(define-key global-map [begin] 'beginning-of-buffer)
-(define-key global-map [end] 'end-of-buffer)
-
-(define-key global-map "\C-z" 'iconify-frame)
+(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)
+    (make-frame-visible)))
+
+(substitute-key-definition 'suspend-emacs 'iconify-or-deiconify-frame
+			   global-map)
+
+;; 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)
+
+;; 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.
+(setq system-key-alist
+      '(
+	;; These are some HP keys.
+	(  168 . mute-acute)
+	(  169 . mute-grave)
+	(  170 . mute-asciicircum)
+	(  171 . mute-diaeresis)
+	(  172 . mute-asciitilde)
+	(  175 . lira)
+	(  190 . guilder)
+	(  252 . block)
+	(  256 . longminus)
+	(65388 . reset)
+	(65389 . system)
+	(65390 . user)
+	(65391 . clearline)
+	(65392 . insertline)
+	(65393 . deleteline)
+	(65394 . insertchar)
+	(65395 . deletechar)
+	(65396 . backtab)
+	(65397 . kp-backtab)
+	;; This is used by DEC's X server.
+	(65280 . remove)
+	;; These are for Sun.
+ 	(392963 . mute-acute)
+	(392976 . f35)
+    	(392977 . f36)
+	(393056 . req)
+	;; These are for Sun under X11R6
+	(393072 . props)
+	(393073 . front)
+	(393074 . copy)
+	(393075 . open)
+	(393076 . paste)
+	(393077 . cut)
+	))
 
-;;; 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))
-(x-open-connection (or x-display-name
-		       (setq x-display-name (getenv "DISPLAY"))))
-
-(setq frame-creation-function 'x-create-frame)
-(setq suspend-hook
-      '(lambda ()
-	 (error "Suspending an emacs running under X makes no sense")))
+;;;; Selections and cut buffers
 
 ;;; 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)
 
-;;; Make TEXT, a string, the primary and clipboard X selections.
-;;; If you are running xclipboard, this means you can effectively
-;;; have a window on a copy of the kill-ring.
+;;; It is said that overlarge strings are slow to put into the cut buffer.
+;;; Note this value is overridden below.
+(defvar x-cut-buffer-max 20000
+  "Max number of characters to put in the cut buffer.")
+
+(defvar x-select-enable-clipboard nil
+  "Non-nil means cutting and pasting uses the clipboard.
+This is in addition to the primary selection.")
+
+;;; Make TEXT, a string, the primary X selection.
 ;;; Also, set the value of X cut buffer 0, for backward compatibility
-;;; with older X application.
-(defun x-select-text (text)
-  (x-own-selection text 'cut-buffer0)
-  (x-own-selection text 'clipboard)
-  (x-own-selection text)
+;;; with older X applications.
+;;; gildea@lcs.mit.edu says it's not desirable to put kills
+;;; in the clipboard.
+(defun x-select-text (text &optional push)
+  ;; 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)
+      (x-set-cut-buffer text push)
+    (x-set-cut-buffer "" push))
+  (x-set-selection 'PRIMARY text)
+  (if x-select-enable-clipboard
+      (x-set-selection 'CLIPBOARD text))
   (setq x-last-selected-text text))
 
-;;; 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.
+;;; Return the value of the current X selection.
+;;; Consult the selection, then the cut buffer.  Treat empty strings
+;;; as if they were unset.
 (defun x-cut-buffer-or-selection-value ()
-  (let ((text (or (x-selection-value 'cut-buffer0)
-		  (x-selection-value))))
-    (if (string= text x-last-selected-text)
-	nil
-      (setq x-last-selected-text nil)
-      text)))
+  (let (text)
+
+    ;; Don't die if x-get-selection signals an error.
+    (condition-case c
+	(setq text (x-get-selection 'PRIMARY))
+      (error (message "%s" c)))
+    (if (string= text "") (setq text nil))
+
+    (if x-select-enable-clipboard
+	(condition-case c
+	    (setq text (x-get-selection 'CLIPBOARD))
+	  (error (message "%s" c))))
+    (if (string= text "") (setq text nil))
+    (or text (setq text (x-get-cut-buffer 0)))
+    (if (string= text "") (setq text nil))
+
+    (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)))))
+
+
+;;; 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))
+
+;;; 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 ?-))))
+
+(x-open-connection (or x-display-name
+		       (setq x-display-name (getenv "DISPLAY")))
+		   x-command-line-resources)
+
+(setq frame-creation-function 'x-create-frame-with-faces)
+
+(setq x-cut-buffer-max (min (- (/ (x-server-max-request-size) 2) 100)
+			    x-cut-buffer-max))
+
+;; Sun expects the menu bar cut and paste commands to use the clipboard.
+(if (string-match "X11/NeWS - Sun Microsystems Inc\\."
+		  (x-server-vendor))
+    (menu-bar-enable-clipboard))
+
+;; 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)))))
+
+;; Check the reverseVideo resource.
+(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)))))
+
+;; Set x-selection-timeout, measured in milliseconds.
+(let ((res-selection-timeout
+       (x-get-resource "selectionTimeout" "SelectionTimeout")))
+  (setq x-selection-timeout 20000)
+  (if res-selection-timeout
+      (setq x-selection-timeout (string-to-number res-selection-timeout))))
+
+(defun x-win-suspend-error ()
+  (error "Suspending an emacs running under X makes no sense"))
+(add-hook 'suspend-hook 'x-win-suspend-error)
 
 ;;; Arrange for the kill and yank functions to set and check the clipboard.
 (setq interprogram-cut-function 'x-select-text)
@@ -496,3 +669,5 @@ turn off scroll bars; otherwise, turn on scroll bars."
 ;;; Turn off window-splitting optimization; X is usually fast enough
 ;;; that this is only annoying.
 (setq split-window-keep-point t)
+
+;;; x-win.el ends here