1 ! Copyright (C) 2006, 2008 Slava Pestov.
2 ! See http://factorcode.org/license.txt for BSD license.
3 USING: accessors io kernel namespaces fry
4 math math.vectors math.geometry.rect math.order
5 sequences words ui.gadgets ui.gadgets.packs ;
9 TUPLE: track < pack sizes ;
11 : normalized-sizes ( track -- seq )
12 sizes>> dup sift sum '[ dup [ _ / ] when ] map ;
14 : init-track ( track -- track )
19 : new-track ( orientation class -- track )
24 : <track> ( orientation -- track ) track new-track ;
26 : alloted-dim ( track -- dim )
27 [ children>> ] [ sizes>> ] bi { 0 0 }
28 [ [ drop { 0 0 } ] [ pref-dim ] if v+ ] 2reduce ;
30 : gap-dim ( track -- dim )
31 [ gap>> ] [ children>> length 1 [-] ] bi v*n ;
33 : available-dim ( track -- dim )
34 [ dim>> ] [ alloted-dim ] bi v- ;
36 : track-layout ( track -- sizes )
37 [ [ available-dim ] [ gap-dim ] bi v- ]
38 [ children>> ] [ normalized-sizes ] tri
39 [ [ over n*v ] [ pref-dim ] ?if ] 2map nip ;
41 M: track layout* ( track -- ) dup track-layout pack-layout ;
43 : track-pref-dims-1 ( track -- dim )
44 children>> pref-dims max-dim ;
46 : track-pref-dims-2 ( track -- dim )
48 [ children>> pref-dims ] [ normalized-sizes ] bi
49 [ dup { 0 f } member? [ 2drop { 0 0 } ] [ v/n ] if ] 2map
50 max-dim [ >fixnum ] map
53 M: track pref-dim* ( gadget -- dim )
55 [ [ alloted-dim ] [ track-pref-dims-2 ] bi v+ ]
60 : track-add ( track gadget constraint -- track )
61 pick sizes>> push add-gadget ;
63 : track-remove ( track gadget -- track )
65 [ swap children>> index ]
66 [ unparent sizes>> ] 2bi
70 : clear-track ( track -- ) V{ } clone >>sizes clear-gadget ;