37 lines
992 B
Factor
37 lines
992 B
Factor
! Copyright (C) 2005, 2006 Eduardo Cavazos and Slava Pestov
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! See http://factorcode.org/license.txt for BSD license.
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IN: x11
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USING: alien arrays errors gadgets hashtables io kernel math
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namespaces prettyprint sequences threads ;
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! Global variable; maps X11 window handles to objects responding
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! to the event protocol in /library/x11/events.factor
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SYMBOL: windows
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SYMBOL: dpy
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SYMBOL: scr
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SYMBOL: root
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: flush-dpy ( -- ) dpy get XFlush drop ;
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: sync-dpy ( discard -- ) >r dpy get r> XSync ;
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: x-atom ( string -- atom ) dpy get swap 0 XInternAtom ;
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: check-display
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[ "Cannot connect to X server - check $DISPLAY" throw ] unless* ;
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: initialize-x ( display-string -- )
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XOpenDisplay check-display dpy set
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dpy get XDefaultScreen scr set
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dpy get scr get XRootWindow root set ;
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: close-x ( -- ) dpy get XCloseDisplay drop ;
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: with-x ( display-string quot -- )
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[
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H{ } clone windows set
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swap initialize-x
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[ close-x ] cleanup
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] with-scope ;
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