1 ! Copyright (C) 2006, 2009 Slava Pestov.
2 ! See http://factorcode.org/license.txt for BSD license.
3 USING: accessors io kernel namespaces fry math math.vectors
4 math.rectangles math.order sequences words ui.gadgets ui.gadgets.packs
5 ui.gadgets.packs.private combinators ;
8 TUPLE: track < pack sizes ;
10 : new-track ( orientation class -- track )
14 swap >>orientation ; inline
16 : <track> ( orientation -- track ) track new-track ;
20 : normalized-sizes ( track -- seq )
21 sizes>> dup sift sum '[ dup [ _ / ] when ] map ;
23 : alloted-dim ( track -- dim )
24 [ children>> ] [ sizes>> ] bi { 0 0 }
25 [ [ drop ] [ pref-dim v+ ] if ] 2reduce ;
27 : available-dim ( track -- dim )
28 [ dim>> ] [ alloted-dim ] bi v- ;
30 : track-layout ( track -- sizes )
32 [ children>> pref-dims ]
34 [ [ available-dim ] [ gap-dim ] bi v- ]
37 '[ [ _ n*v _ set-axis ] when* ] 2map ;
39 M: track layout* ( track -- ) dup track-layout pack-layout ;
41 : track-pref-dims-1 ( track -- dim )
42 children>> pref-dims max-dim ;
44 : track-pref-dims-2 ( track -- dim )
46 [ children>> pref-dims ] [ normalized-sizes ] bi
47 [ dup { 0 f } member? [ 2drop { 0 0 } ] [ v/n ] if ] 2map
48 max-dim [ >fixnum ] map
51 M: track pref-dim* ( gadget -- dim )
53 [ [ alloted-dim ] [ track-pref-dims-2 ] bi v+ ]
60 : track-add ( track gadget constraint -- track )
61 pick sizes>> push add-gadget ;
63 M: track remove-gadget
64 [ [ children>> index ] [ sizes>> ] bi delete-nth ]
65 [ call-next-method ] 2bi ;
67 : clear-track ( track -- ) [ sizes>> delete-all ] [ clear-gadget ] bi ;