;;; 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
-;; pertaining to X are processed and removed from the command line. The
-;; X display is opened and hooks are set for popping up the initial window.
+;; X-win.el: this file defines functions to initialize the X window
+;; system and process X-specific command line parameters before
+;; creating the first X frame.
+
+;; Note that contrary to previous Emacs versions, the act of loading
+;; this file should not have the side effect of initializing the
+;; window system or processing command line arguments (this file is
+;; now loaded in loadup.el). See the variables
+;; `handle-args-function-alist' and
+;; `window-system-initialization-alist' for more details.
;; startup.el will then examine startup files, and eventually call the hooks
;; which create the first window(s).
;; An alist of X options and the function which handles them. See
;; ../startup.el.
-(if (not (eq window-system 'x))
+(if (not (fboundp 'x-create-frame))
(error "%s: Loading x-win.el but not compiled for X" (invocation-name)))
(require 'frame)
(require 'menu-bar)
(require 'fontset)
(require 'x-dnd)
+(require 'server)
(defvar x-invocation-args)
\f
;;;; Function keys
-(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] [?\C-l])
-(define-key function-key-map [return] [?\C-m])
-(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-\C-l])
-(define-key function-key-map [M-return] [?\M-\C-m])
-(define-key function-key-map [M-escape] [?\M-\e])
-(define-key function-key-map [iso-lefttab] [backtab])
-(define-key function-key-map [S-iso-lefttab] [backtab])
+(defun x-setup-function-keys (frame)
+ "Set up `function-key-map' on FRAME for the X window system."
+ ;; Map certain keypad keys into ASCII characters that people usually expect.
+ (let ((m (terminal-local-value 'function-key-map frame)))
+ (define-key m [backspace] [127])
+ (define-key m [delete] [127])
+ (define-key m [tab] [?\t])
+ (define-key m [linefeed] [?\n])
+ (define-key m [clear] [?\C-l])
+ (define-key m [return] [?\C-m])
+ (define-key m [escape] [?\e])
+ (define-key m [M-backspace] [?\M-\d])
+ (define-key m [M-delete] [?\M-\d])
+ (define-key m [M-tab] [?\M-\t])
+ (define-key m [M-linefeed] [?\M-\n])
+ (define-key m [M-clear] [?\M-\C-l])
+ (define-key m [M-return] [?\M-\C-m])
+ (define-key m [M-escape] [?\M-\e])
+ (define-key m [iso-lefttab] [backtab])
+ (define-key m [S-iso-lefttab] [backtab])))
;; These tell read-char how to convert
;; these special chars to ASCII.
(if text
(remove-text-properties 0 (length text) '(foreign-selection nil) text))
text))
-
+
;;; Return the value of the current X selection.
;;; Consult the selection, and the cut buffer. Treat empty strings
;;; as if they were unset.
(or clip-text primary-text cut-text)
))
-\f
-;;; 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
- ;; Exit Emacs with fatal error if this fails.
- t)
-
-(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))
-
-;; Setup the default fontset.
-(setup-default-fontset)
-
-;; Create the standard fontset.
-(create-fontset-from-fontset-spec standard-fontset-spec t)
-
-;; Create fontset specified in X resources "Fontset-N" (N is 0, 1, ...).
-(create-fontset-from-x-resource)
-
-;; Try to create a fontset from a font specification which comes
-;; from initial-frame-alist, default-frame-alist, or X resource.
-;; A font specification in command line argument (i.e. -fn XXXX)
-;; should be already in default-frame-alist as a `font'
-;; parameter. However, any font specifications in site-start
-;; library, user's init file (.emacs), and default.el are not
-;; yet handled here.
-
-(let ((font (or (cdr (assq 'font initial-frame-alist))
- (cdr (assq 'font default-frame-alist))
- (x-get-resource "font" "Font")))
- xlfd-fields resolved-name)
- (if (and font
- (not (query-fontset font))
- (setq resolved-name (x-resolve-font-name font))
- (setq xlfd-fields (x-decompose-font-name font)))
- (if (string= "fontset" (aref xlfd-fields xlfd-regexp-registry-subnum))
- (new-fontset font (x-complement-fontset-spec xlfd-fields nil))
- ;; Create a fontset from FONT. The fontset name is
- ;; generated from FONT.
- (create-fontset-from-ascii-font font resolved-name "startup"))))
-
-;; 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"))
- parsed)
- (if res-geometry
- (progn
- (setq parsed (x-parse-geometry res-geometry))
- ;; If the resource specifies a position,
- ;; call the position and size "user-specified".
- (if (or (assq 'top parsed) (assq 'left parsed))
- (setq parsed (cons '(user-position . t)
- (cons '(user-size . t) parsed))))
- ;; All geometry parms apply to the initial frame.
- (setq initial-frame-alist (append initial-frame-alist parsed))
- ;; The size parms apply to all frames.
- (if (assq 'height parsed)
- (setq default-frame-alist
- (cons (cons 'height (cdr (assq 'height parsed)))
- default-frame-alist)))
- (if (assq 'width parsed)
- (setq default-frame-alist
- (cons (cons 'width (cdr (assq 'width parsed)))
- default-frame-alist))))))
-
-;; 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)))))
+(defun x-clipboard-yank ()
+ "Insert the clipboard contents, or the last stretch of killed text."
+ (interactive)
+ (let ((clipboard-text (x-selection-value 'CLIPBOARD))
+ (x-select-enable-clipboard t))
+ (if (and clipboard-text (> (length clipboard-text) 0))
+ (kill-new clipboard-text))
+ (yank)))
-;; 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))))
+\f
+;;; Window system initialization.
(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)
-(setq interprogram-paste-function 'x-cut-buffer-or-selection-value)
+(defvar x-initialized nil
+ "Non-nil if the X window system has been initialized.")
+
+(defun x-initialize-window-system ()
+ "Initialize Emacs for X frames and open the first connection to an X server."
+ ;; 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 (server-getenv "DISPLAY")))
+ x-command-line-resources
+ ;; Exit Emacs with fatal error if this fails and we
+ ;; are the initial display.
+ (eq initial-window-system 'x))
+
+ (setq x-cut-buffer-max (min (- (/ (x-server-max-request-size) 2) 100)
+ x-cut-buffer-max))
+
+ ;; Setup the default fontset.
+ (setup-default-fontset)
+
+ ;; Create the standard fontset.
+ (create-fontset-from-fontset-spec standard-fontset-spec t)
+
+ ;; Create fontset specified in X resources "Fontset-N" (N is 0, 1, ...).
+ (create-fontset-from-x-resource)
+
+ ;; Try to create a fontset from a font specification which comes
+ ;; from initial-frame-alist, default-frame-alist, or X resource.
+ ;; A font specification in command line argument (i.e. -fn XXXX)
+ ;; should be already in default-frame-alist as a `font'
+ ;; parameter. However, any font specifications in site-start
+ ;; library, user's init file (.emacs), and default.el are not
+ ;; yet handled here.
+
+ (let ((font (or (cdr (assq 'font initial-frame-alist))
+ (cdr (assq 'font default-frame-alist))
+ (x-get-resource "font" "Font")))
+ xlfd-fields resolved-name)
+ (if (and font
+ (not (query-fontset font))
+ (setq resolved-name (x-resolve-font-name font))
+ (setq xlfd-fields (x-decompose-font-name font)))
+ (if (string= "fontset" (aref xlfd-fields xlfd-regexp-registry-subnum))
+ (new-fontset font (x-complement-fontset-spec xlfd-fields nil))
+ ;; Create a fontset from FONT. The fontset name is
+ ;; generated from FONT.
+ (create-fontset-from-ascii-font font resolved-name "startup"))))
+
+ ;; 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"))
+ parsed)
+ (if res-geometry
+ (progn
+ (setq parsed (x-parse-geometry res-geometry))
+ ;; If the resource specifies a position,
+ ;; call the position and size "user-specified".
+ (if (or (assq 'top parsed) (assq 'left parsed))
+ (setq parsed (cons '(user-position . t)
+ (cons '(user-size . t) parsed))))
+ ;; All geometry parms apply to the initial frame.
+ (setq initial-frame-alist (append initial-frame-alist parsed))
+ ;; The size parms apply to all frames.
+ (if (assq 'height parsed)
+ (setq default-frame-alist
+ (cons (cons 'height (cdr (assq 'height parsed)))
+ default-frame-alist)))
+ (if (assq 'width parsed)
+ (setq default-frame-alist
+ (cons (cons 'width (cdr (assq 'width parsed)))
+ default-frame-alist))))))
+
+ ;; 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)))))
-;;; Turn off window-splitting optimization; X is usually fast enough
-;;; that this is only annoying.
-(setq split-window-keep-point t)
+ ;; 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))))
-;; Don't show the frame name; that's redundant with X.
-(setq-default mode-line-frame-identification " ")
+ ;; Don't let Emacs suspend under X.
+ (add-hook 'suspend-hook 'x-win-suspend-error)
-;; Motif direct handling of f10 wasn't working right,
-;; So temporarily we've turned it off in lwlib-Xm.c
-;; and turned the Emacs f10 back on.
-;; ;; Motif normally handles f10 itself, so don't try to handle it a second time.
-;; (if (featurep 'motif)
-;; (global-set-key [f10] 'ignore))
+ ;; Turn off window-splitting optimization; X is usually fast enough
+ ;; that this is only annoying.
+ (setq split-window-keep-point t)
-;; Turn on support for mouse wheels.
-(mouse-wheel-mode 1)
+ ;; Motif direct handling of f10 wasn't working right,
+ ;; So temporarily we've turned it off in lwlib-Xm.c
+ ;; and turned the Emacs f10 back on.
+ ;; ;; Motif normally handles f10 itself, so don't try to handle it a second time.
+ ;; (if (featurep 'motif)
+ ;; (global-set-key [f10] 'ignore))
+ ;; Turn on support for mouse wheels.
+ (mouse-wheel-mode 1)
-;; Enable CLIPBOARD copy/paste through menu bar commands.
-(menu-bar-enable-clipboard)
+ ;; Enable CLIPBOARD copy/paste through menu bar commands.
+ (menu-bar-enable-clipboard)
-;; Override Paste so it looks at CLIPBOARD first.
-(defun x-clipboard-yank ()
- "Insert the clipboard contents, or the last stretch of killed text."
- (interactive)
- (let ((clipboard-text (x-selection-value 'CLIPBOARD))
- (x-select-enable-clipboard t))
- (if (and clipboard-text (> (length clipboard-text) 0))
- (kill-new clipboard-text))
- (yank)))
+ ;; Override Paste so it looks at CLIPBOARD first.
+ (define-key menu-bar-edit-menu [paste]
+ (cons "Paste" (cons "Paste text from clipboard or kill ring"
+ 'x-clipboard-yank)))
+
+ (setq x-initialized t))
+
+(add-to-list 'handle-args-function-alist '(x . x-handle-args))
+(add-to-list 'frame-creation-function-alist '(x . x-create-frame-with-faces))
+(add-to-list 'window-system-initialization-alist '(x . x-initialize-window-system))
-(define-key menu-bar-edit-menu [paste]
- (cons "Paste" (cons "Paste text from clipboard or kill ring"
- 'x-clipboard-yank)))
+(provide 'x-win)
;; Initiate drag and drop
(add-hook 'after-make-frame-functions 'x-dnd-init-frame)