factor/library/x11/ui.factor

IN: x11
USING: arrays errors freetype gadgets gadgets-launchpad
gadgets-layouts gadgets-listener hashtables kernel
kernel-internals math namespaces opengl sequences x11 ;

M: world handle-expose-event ( event world -- )
    nip draw-world ;

M: world handle-resize-event ( event world -- )
    >r
    dup XConfigureEvent-width swap XConfigureEvent-height 0
    3array
    r> set-gadget-dim ;

: gadget-window ( world -- window )
    dup rect-dim first2 choose-visual [
        create-window 2dup windows get set-hash dup map-window
    ] keep create-context 2array swap set-world-handle ;

IN: gadgets

: repaint-handle ( handle -- )
    drop ; ! windows get hash draw-glx-world ;

: in-window ( gadget status dim title -- )
    >r <world> r> drop gadget-window ;

: select-gl-context ( handle -- )
    second >r dpy get swap r> glXMakeCurrent
    [ "Failed to set current GLX context" throw ] unless ;

: flush-gl-context ( handle -- )
    dpy get swap first glXSwapBuffers ;

IN: shells

: ui ( -- )
    [
        f [
            launchpad-window
            listener-window
            event-loop
        ] with-x
    ] with-freetype ;

IN: kernel

! : default-shell "DISPLAY" getenv empty? "tty" "ui" ? ;