track-add ( track gadget constraint -- track )
Factor handbook » UI framework » Building user interfaces » Gadget hierarchy and layouts » Track layouts

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<track> ( orientation -- track )

Vocabulary
ui.gadgets.tracks

Inputs

track	a track
gadget	a gadget
constraint	a number between 0 and 1, or f

Outputs

track

a track

Word description
Adds a new child to a track. If the constraint is f, the child always occupies its preferred size. Otherwise, the constraint is a fraction of the total size which is allocated for the child.

Definition

USING: accessors kernel sequences ui.gadgets ;

IN: ui.gadgets.tracks

: track-add ( track gadget constraint -- track )
    pick sizes>> push add-gadget ;