screen-loc ( gadget -- loc )
Factor handbook » UI framework » Building user interfaces » Gadget geometry
Prev:relative-loc ( fromgadget togadget -- loc )
Next:pick-up ( point gadget -- child/f )


Vocabulary
ui.gadgets

Inputs
gadgeta gadget


Outputs
loca pair of integers


Word description
Outputs the location of the gadget relative to the top-left corner of the world containing the gadget. This word does not output a useful value if the gadget is not grafted.

Definition
USING: accessors math.vectors sequences ;

IN: ui.gadgets

: screen-loc ( gadget -- loc )
parents { 0 0 } [ loc>> v+ ] reduce ;