103 lines
2.5 KiB
Factor
103 lines
2.5 KiB
Factor
! Copyright (C) 2005 Slava Pestov.
|
|
! See http://factor.sf.net/license.txt for BSD license.
|
|
IN: gadgets
|
|
USING: arrays generic hashtables kernel lists math
|
|
namespaces sequences styles ;
|
|
|
|
SYMBOL: origin
|
|
|
|
{ 0 0 0 } origin global set-hash
|
|
|
|
TUPLE: rect loc dim ;
|
|
|
|
M: array rect-loc ;
|
|
|
|
M: array rect-dim drop { 0 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 ;
|
|
|
|
: |v-| ( vec vec -- vec ) v- [ 0 max ] map ;
|
|
|
|
: <extent-rect> ( loc ext -- rect ) dupd swap |v-| <rect> ;
|
|
|
|
: >absolute ( rect -- rect )
|
|
rect-bounds >r origin get v+ r> <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 <= ] all? ;
|
|
|
|
: rect-union ( rect rect -- rect )
|
|
2rect-extent vmax >r vmin r> <extent-rect> ;
|
|
|
|
TUPLE: gadget
|
|
parent children orientation
|
|
gestures visible? relayout? root?
|
|
interior boundary ;
|
|
|
|
: show-gadget t swap set-gadget-visible? ;
|
|
|
|
: hide-gadget f swap set-gadget-visible? ;
|
|
|
|
M: gadget = eq? ;
|
|
|
|
: gadget-child gadget-children first ;
|
|
|
|
C: gadget ( -- gadget )
|
|
{ 0 0 0 } dup <rect> over set-delegate dup show-gadget
|
|
{ 0 1 0 } over set-gadget-orientation ;
|
|
|
|
: delegate>gadget ( tuple -- ) <gadget> swap set-delegate ;
|
|
|
|
GENERIC: user-input* ( ch gadget -- ? )
|
|
|
|
M: gadget user-input* 2drop t ;
|
|
|
|
: invalidate ( gadget -- ) t swap set-gadget-relayout? ;
|
|
|
|
DEFER: add-invalid
|
|
|
|
GENERIC: children-on ( rect/point gadget -- list )
|
|
|
|
M: gadget children-on ( rect/point gadget -- list )
|
|
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 reverse-slice [ inside? ] find-with nip ;
|
|
|
|
: translate ( rect/point -- new-origin )
|
|
rect-loc origin [ v+ dup ] change ;
|
|
|
|
: pick-up ( rect/point gadget -- gadget )
|
|
[
|
|
2dup inside? [
|
|
dup translate drop 2dup pick-up-list dup
|
|
[ nip pick-up ] [ rot 2drop ] if
|
|
] [ 2drop f ] if
|
|
] with-scope ;
|
|
|
|
: max-dim ( dims -- dim ) { 0 0 0 } [ vmax ] reduce ;
|
|
|
|
: set-gadget-delegate ( delegate gadget -- )
|
|
dup pick gadget-children [ set-gadget-parent ] each-with
|
|
set-delegate ;
|
|
|
|
! Pointer help protocol
|
|
GENERIC: gadget-help
|
|
|
|
M: gadget gadget-help drop f ;
|