Scroller(3I) InterViews Reference Manual Scroller(3I)
NAME
Scroller, HScroller, VScroller - scrolling an interactor
SYNOPSIS
#include <InterViews/scroller.h>
DESCRIPTION
A scroller is an interactor that manipulates the perspective of another interactor. It contains a bar whose position and size reflect the
current origin and size in the interactor's perspective. Clicking and dragging in the scroller modifies the attached interactor's perspec-
tive. VScroller is a class for defining vertical scrollers, HScroller for horizontal scrollers.
PUBLIC OPERATIONS
HScroller(Interactor*, int size = 0)
VScroller(Interactor*, int size = 0)
Create a scroller of a given size (height for a horizontal scroller, width for a vertical scroller). A zero size means to use the
default size.
virtual void Update()
Redisplay the scroller to reflect a change in the interactor's perspective.
X DEFAULTS
The ``syncScroll'' resource specifies whether the scroller should work in real-time or not. When synchronized scrolling is employed the
interactor scrolls synchronously as the scroller's bar is dragged; otherwise the bar's outline follows the mouse during dragging, and the
interactor is scrolled only after the user stops dragging the bar. Scrollers will scroll synchronously if their syncScroll resource is set
to ``on'' or ``true.'' The state of the syncScroll attribute can be toggled temporarily by holding down the ``control'' key while the
scroller is manipulated.
SEE ALSO
Interactor(3I), Perspective(3I)
InterViews 15 June 1987 Scroller(3I)
