visible-lines ( gadget -- n )
Factor handbook » UI framework » Implementing new gadgets » Gadget line support
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Vocabulary
ui.gadgets.line-support

Inputs
gadgetan object


Outputs
nan object


Definition
USING: kernel math sequences ui.gadgets.viewports ;

IN: ui.gadgets.line-support

: visible-lines ( gadget -- n )
[ visible-dim second ] [ line-height ] bi /i ;