! Copyright (C) 2004, 2005 Slava Pestov.
! See http://factor.sf.net/license.txt for BSD license.
IN: sdl
USING: alien lists namespaces kernel math hashtables ;

: SDL_EnableUNICODE ( enable -- )
    "int" "sdl" "SDL_EnableUNICODE" [ "int" ] alien-invoke ;

: SDL_DEFAULT_REPEAT_DELAY    500 ;
: SDL_DEFAULT_REPEAT_INTERVAL 30 ;

: SDL_EnableKeyRepeat ( delay interval -- )
    "int" "sdl" "SDL_EnableKeyRepeat" [ "int" "int" ] alien-invoke ;

: modifiers, ( mod -- )
    modifiers get [
        uncons pick bitand 0 = [ drop ] [ unique, ] ifte
    ] each
    drop ;

: keysym, ( sym -- )
    #! Return the original keysym number if its unknown.
    [ keysyms get hash dup ] keep ? , ;

: keyboard-event>binding ( event -- binding )
    #! Turn a key event into a binding, which is a list where
    #! all elements but the last one are modifier names looked
    #! up the modifiers alist, and the last element is a keysym
    #! look up in the keysyms hash.
    [
        dup keyboard-event-mod modifiers,
        keyboard-event-sym keysym,
    ] make-list ;