Summary
Viewport gadgets display a portion of a child gadget and are used to implement scrollers

Metadata

Authors:

Slava Pestov

Words

Tuple classes

Class	Superclass	Slots
viewport	gadget	constraint

Ordinary words

Word	Stack effect
<viewport>	( content model -- viewport )
find-viewport	( gadget -- viewport )
scroll-position	( scroller -- loc )
visible-dim	( gadget -- dim )

Class predicate words

Word	Stack effect
viewport?	( object -- ? )

Files


Metadata files