pack-pref-dim ( pack sizes -- dim )
Factor handbook » UI framework » Building user interfaces » Gadget hierarchy and layouts » Pack layouts

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Vocabulary
ui.gadgets.packs.private

Inputs

pack	a pack
sizes	a sequence of pairs of integers

Outputs

dim	a pair of integers

Word description
Computes the preferred size of a pack, with each gadget receiving its size from the corresponding index of the sizes sequence.

Notes
This word is useful if you are writing your own layout gadget which inherits from pack. This allows you to reuse layout logic while computing gadget sizes using a custom procedure.

Definition

USING: accessors kernel math.vectors ui.gadgets ;

IN: ui.gadgets.packs.private

: pack-pref-dim ( pack sizes -- dim )
    [ max-pack-dim ] [ [ gap-dim ] [ sum-dims ] bi* v+ ]
    [ drop orientation>> ] 2tri set-axis ;