factor/basis/x11/x11.factor

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Factor

! Copyright (C) 2005, 2009 Eduardo Cavazos, Slava Pestov.
! See http://factorcode.org/license.txt for BSD license.
USING: alien.strings continuations io
io.encodings.ascii kernel namespaces x11.xlib x11.io
vocabs vocabs.loader ;
IN: x11
SYMBOL: dpy
SYMBOL: scr
SYMBOL: root
: init-locale ( -- )
LC_ALL "" setlocale [ "setlocale() failed" print flush ] unless
XSupportsLocale [ "XSupportsLocale() failed" print flush ] unless ;
: flush-dpy ( -- ) dpy get XFlush drop ;
: x-atom ( string -- atom ) [ dpy get ] dip 0 XInternAtom ;
: check-display ( alien -- alien' )
[ "Cannot connect to X server - check $DISPLAY" throw ] unless* ;
: init-x ( display-string -- )
init-locale
dup [ ascii string>alien ] when
XOpenDisplay check-display dpy set-global
dpy get XDefaultScreen scr set-global
dpy get scr get XRootWindow root set-global
init-x-io ;
: close-x ( -- ) dpy get XCloseDisplay drop ;
: with-x ( display-string quot -- )
[ init-x ] dip [ close-x ] [ ] cleanup ; inline
"io.backend.unix" vocab [ "x11.io.unix" require ] when