100 lines
2.7 KiB
Factor
100 lines
2.7 KiB
Factor
! Copyright (C) 2005 Slava Pestov.
|
|
! See http://factor.sf.net/license.txt for BSD license.
|
|
IN: gadgets
|
|
USING: generic hashtables kernel lists math namespaces ;
|
|
|
|
! A gadget is a shape, a paint, a mapping of gestures to
|
|
! actions, and a reference to the gadget's parent. A gadget
|
|
! delegates to its shape.
|
|
TUPLE: gadget
|
|
paint gestures
|
|
relayout? redraw?
|
|
parent children delegate ;
|
|
|
|
C: gadget ( shape -- gadget )
|
|
[ set-gadget-delegate ] keep
|
|
[ <namespace> swap set-gadget-paint ] keep
|
|
[ <namespace> swap set-gadget-gestures ] keep
|
|
[ t swap set-gadget-relayout? ] keep
|
|
[ t swap set-gadget-redraw? ] keep ;
|
|
|
|
: redraw ( gadget -- )
|
|
#! Redraw a gadget before the next iteration of the event
|
|
#! loop.
|
|
t over set-gadget-redraw?
|
|
gadget-parent [ redraw ] when* ;
|
|
|
|
: relayout ( gadget -- )
|
|
#! Relayout a gadget before the next iteration of the event
|
|
#! loop. Since relayout also implies the visual
|
|
#! representation changed, we redraw the gadget too.
|
|
t over set-gadget-redraw?
|
|
t over set-gadget-relayout?
|
|
gadget-parent [ relayout ] when* ;
|
|
|
|
: move-gadget ( x y gadget -- )
|
|
[ move-shape ] keep redraw ;
|
|
|
|
: resize-gadget ( w h gadget -- )
|
|
[ resize-shape ] keep redraw ;
|
|
|
|
: remove-gadget ( gadget box -- )
|
|
[ 2dup gadget-children remq swap set-gadget-children ] keep
|
|
relayout
|
|
f swap set-gadget-parent ;
|
|
|
|
: (add-gadget) ( gadget box -- )
|
|
#! This is inefficient.
|
|
[ gadget-children swap unit append ] keep
|
|
set-gadget-children ;
|
|
|
|
: unparent ( gadget -- )
|
|
dup gadget-parent dup [ remove-gadget ] [ 2drop ] ifte ;
|
|
|
|
: add-gadget ( gadget box -- )
|
|
#! Add a gadget to a box.
|
|
over unparent
|
|
dup pick set-gadget-parent
|
|
tuck (add-gadget)
|
|
relayout ;
|
|
|
|
: (parent-list) ( gadget -- )
|
|
[ dup gadget-parent (parent-list) , ] when* ;
|
|
|
|
: parent-list ( gadget -- list )
|
|
#! A list of all parents of the gadget, including the
|
|
#! gadget itself.
|
|
[ (parent-list) ] make-list ;
|
|
|
|
: (each-parent) ( list quot -- ? )
|
|
over [
|
|
over car gadget-paint [
|
|
2dup >r >r >r cdr r> (each-parent) [
|
|
r> car r> call
|
|
] [
|
|
r> r> 2drop f
|
|
] ifte
|
|
] bind
|
|
] [
|
|
2drop t
|
|
] ifte ; inline
|
|
|
|
: each-parent ( gadget quot -- ? )
|
|
#! Keep executing the quotation on higher and higher
|
|
#! parents until it returns f.
|
|
>r parent-list r> (each-parent) ; inline
|
|
|
|
: screen-pos ( gadget -- point )
|
|
#! The position of the gadget on the screen.
|
|
0 swap [ shape-pos + t ] each-parent drop ;
|
|
|
|
: relative-pos ( g1 g2 -- g2-p1 )
|
|
shape-pos swap screen-pos - ;
|
|
|
|
: child? ( parent child -- ? )
|
|
dup [
|
|
2dup eq? [ 2drop t ] [ gadget-parent child? ] ifte
|
|
] [
|
|
2drop f
|
|
] ifte ;
|