79 lines
2.0 KiB
Factor
79 lines
2.0 KiB
Factor
! Copyright (C) 2006 Slava Pestov.
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! See http://factorcode.org/license.txt for BSD license.
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IN: gadgets
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USING: arrays kernel math namespaces sequences words ;
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TUPLE: grid children gap ;
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: set-grid-children* ( children grid -- )
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[ set-grid-children ] 2keep >r concat r> add-gadgets ;
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C: grid ( children -- grid )
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dup delegate>gadget
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[ set-grid-children* ] keep
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{ 0 0 } over set-grid-gap ;
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: grid-child ( grid i j -- gadget ) rot grid-children nth nth ;
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: grid-add ( gadget grid i j -- )
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>r >r 2dup add-gadget r> r>
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3dup grid-child unparent rot grid-children nth set-nth ;
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: grid-remove ( grid i j -- )
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>r >r >r <gadget> r> r> r> grid-add ;
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: pref-dim-grid ( -- dims )
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grid get grid-children [ [ pref-dim ] map ] map ;
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: compute-grid ( -- horiz vert )
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pref-dim-grid
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dup flip [ max-dim ] map swap [ max-dim ] map ;
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: with-grid ( grid quot -- )
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[ >r grid set compute-grid r> call ] with-scope ; inline
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: gap grid get grid-gap ;
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: (pair-up) ( horiz vert -- dim ) >r first r> second 2array ;
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M: grid pref-dim*
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[
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[ gap [ v+ gap v+ ] reduce ] 2apply (pair-up)
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] with-grid ;
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: do-grid ( dims quot -- )
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swap grid get grid-children
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[ [ pick call ] 2each ] 2each
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drop ; inline
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: pair-up ( horiz vert -- dims )
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[ swap [ swap (pair-up) ] map-with ] map-with ;
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: grid-positions ( dims -- locs )
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gap [ v+ gap v+ ] accumulate nip ;
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: position-grid ( horiz vert -- )
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[ grid-positions ] 2apply
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pair-up [ set-rect-loc ] do-grid ;
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: resize-grid ( horiz vert -- )
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pair-up [ set-layout-dim ] do-grid ;
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: grid-layout ( horiz vert -- )
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2dup position-grid resize-grid ;
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M: grid layout*
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[ grid-layout ] with-grid ;
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: build-grid ( grid specs -- )
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swap [ [ grid-add ] build-spec ] with-gadget ; inline
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M: grid children-on ( rect gadget -- seq )
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dup gadget-children empty? [
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2drop f
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] [
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{ 0 1 } swap grid-children
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[ 0 <column> fast-children-on ] keep
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<slice> concat
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] if ;
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