factor/library/ui/gadgets.factor

137 lines
3.5 KiB
Factor

! Copyright (C) 2005, 2006 Slava Pestov.
! See http://factorcode.org/license.txt for BSD license.
IN: gadgets
USING: arrays generic hashtables kernel models math
namespaces sequences styles ;
SYMBOL: origin
{ 0 0 } origin set-global
TUPLE: rect loc dim ;
M: array rect-loc ;
M: array rect-dim drop { 0 0 } ;
: rect-bounds ( rect -- loc dim ) dup rect-loc swap rect-dim ;
: rect-extent ( rect -- loc ext ) rect-bounds over v+ ;
: 2rect-extent ( rect rect -- loc1 loc2 ext1 ext2 )
[ rect-extent ] 2apply swapd ;
: <extent-rect> ( loc ext -- rect ) dupd swap [v-] <rect> ;
: offset-rect ( rect loc -- rect )
over rect-loc v+ swap rect-dim <rect> ;
: >absolute ( rect -- rect )
origin get offset-rect ;
: (rect-intersect) ( rect rect -- array array )
2rect-extent vmin >r vmax r> ;
: rect-intersect ( rect rect -- rect )
(rect-intersect) <extent-rect> ;
: intersects? ( rect/point rect -- ? )
(rect-intersect) [v-] { 0 0 } = ;
! gadget-pref-dim is a cached value; call pref-dim instead
! gadget-children is a vector
! gadget-orientation is { 1 0 } or { 0 1 }
! gadget-state is f, relayout or relayout-1
! gadget-root? relayout requests do not propogate higher
! gadget-grafted? are we part of a live world's gadget hierarchy
! gadget-interior, gadget-boundary: see paint.factor
TUPLE: gadget
pref-dim parent children orientation state
visible? root? clipped? grafted?
interior boundary ;
M: gadget equal? eq? ;
: gadget-child gadget-children first ;
: nth-gadget gadget-children nth ;
C: gadget ( -- gadget )
{ 0 0 } dup <rect> over set-delegate
{ 0 1 } over set-gadget-orientation
t over set-gadget-visible? ;
: delegate>gadget ( tuple -- ) <gadget> swap set-delegate ;
GENERIC: user-input* ( str gadget -- ? )
M: gadget user-input* 2drop t ;
GENERIC: children-on ( rect/point gadget -- list )
M: gadget children-on nip gadget-children ;
: inside? ( bounds gadget -- ? )
dup gadget-visible?
[ >absolute intersects? ] [ 2drop f ] if ;
: pick-up-list ( rect/point gadget -- gadget/f )
dupd children-on <reversed> [ inside? ] find-with nip ;
: translate ( rect/point -- ) rect-loc origin [ v+ ] change ;
: pick-up ( rect/point gadget -- gadget )
[
2dup inside? [
dup translate 2dup pick-up-list dup
[ nip pick-up ] [ rot 2drop ] if
] [ 2drop f ] if
] with-scope ;
: max-dim ( dims -- dim ) { 0 0 } [ vmax ] reduce ;
: each-child ( gadget quot -- )
>r gadget-children r> each ; inline
: each-child-with ( obj gadget quot -- )
>r gadget-children r> each-with ; inline
: set-gadget-delegate ( delegate gadget -- )
over [ dup pick [ set-gadget-parent ] each-child-with ] when
set-delegate ;
: with-gadget ( gadget quot -- )
[ swap gadget set call ] with-scope ; inline
! Title bar protocol
GENERIC: gadget-title ( gadget -- string )
M: gadget gadget-title drop "Factor" <model> ;
! Selection protocol
GENERIC: gadget-selection? ( gadget -- ? )
M: gadget gadget-selection? drop f ;
GENERIC: gadget-selection ( gadget -- string/f )
M: gadget gadget-selection drop f ;
! Re-firing gestures while mouse held down, etc. Used by
! slider gadgets
TUPLE: timer-gadget quot ;
C: timer-gadget ( gadget -- gadget )
[ set-gadget-delegate ] keep ;
M: timer-gadget tick timer-gadget-quot call ;
: start-timer-gadget ( gadget quot -- )
2dup call
over >r curry r>
[ set-timer-gadget-quot ] keep
100 200 add-timer ; inline
: stop-timer-gadget ( gadget -- )
dup remove-timer f swap set-timer-gadget-quot ;