81 lines
2.0 KiB
Factor
81 lines
2.0 KiB
Factor
! Copyright (C) 2005 Slava Pestov.
|
|
! See http://factor.sf.net/license.txt for BSD license.
|
|
IN: gadgets
|
|
USING: alien errors generic kernel lists math memory namespaces
|
|
prettyprint sdl stdio strings threads ;
|
|
|
|
! The world gadget is the top level gadget that all (visible)
|
|
! gadgets are contained in. The current world is stored in the
|
|
! world variable. The menu slot ensures that only one menu is
|
|
! open at any one time.
|
|
TUPLE: world running? hand menu ;
|
|
|
|
: <world-box> ( -- box )
|
|
0 0 0 0 <plain-rect> <gadget> ;
|
|
|
|
C: world ( -- world )
|
|
<world-box> over set-delegate
|
|
t over set-world-running?
|
|
dup <hand> over set-world-hand ;
|
|
|
|
M: world inside? ( point world -- ? ) 2drop t ;
|
|
|
|
: hand world get world-hand ;
|
|
|
|
: draw-world ( world -- )
|
|
dup gadget-redraw? [
|
|
[
|
|
f over set-gadget-redraw?
|
|
dup draw-gadget
|
|
dup gadget-paint [ world-hand draw-gadget ] bind
|
|
] with-surface
|
|
] [
|
|
drop
|
|
] ifte ;
|
|
|
|
DEFER: handle-event
|
|
|
|
: layout-world ( world -- )
|
|
dup
|
|
0 0 width get height get <rectangle> clip set-paint-prop
|
|
dup layout world-hand update-hand ;
|
|
|
|
: world-step ( world -- ? )
|
|
dup world-running? [
|
|
dup layout-world draw-world t
|
|
] [
|
|
drop f
|
|
] ifte ;
|
|
|
|
: run-world ( -- )
|
|
#! Keep polling for events until there are no more events in
|
|
#! the queue; then block for the next event.
|
|
<event> dup SDL_PollEvent [
|
|
[ handle-event ] in-thread drop run-world
|
|
] [
|
|
drop world get world-step [ yield run-world ] when
|
|
] ifte ;
|
|
|
|
: ensure-ui ( -- )
|
|
#! Raise an error if the UI is not running.
|
|
world get dup [ world-running? ] when [
|
|
"UI not running." throw
|
|
] unless ;
|
|
|
|
: title ( -- str )
|
|
"Factor " version cat2 ;
|
|
|
|
IN: shells
|
|
|
|
: ui ( -- )
|
|
#! Start the Factor graphics subsystem with the given screen
|
|
#! dimensions.
|
|
t world get set-world-running?
|
|
world get shape-w world get shape-h 0 SDL_RESIZABLE
|
|
[
|
|
0 x set 0 y set [
|
|
title dup SDL_WM_SetCaption
|
|
run-world
|
|
] with-screen
|
|
] with-scope ;
|