void ScrollablePane::configureScrollbars(void)
{
// controls should all be valid by this stage
assert(d_container != 0);
assert(d_vertScrollbar != 0);
assert(d_horzScrollbar != 0);
// enable required scrollbars
d_vertScrollbar->setVisible(isVertScrollbarNeeded());
d_horzScrollbar->setVisible(isHorzScrollbarNeeded());
// Check if the addition of the horizontal scrollbar means we
// now also need the vertical bar.
if (d_horzScrollbar->isVisible())
{
d_vertScrollbar->setVisible(isVertScrollbarNeeded());
}
performChildWindowLayout();
// get viewable area
Rect viewableArea(getViewableArea());
if( d_vertScrollbar )
{
// set up vertical scroll bar values
d_vertScrollbar->setDocumentSize(fabsf(d_contentRect.getHeight()));
d_vertScrollbar->setPageSize(viewableArea.getHeight());
d_vertScrollbar->setStepSize(ceguimax(1.0f, viewableArea.getHeight() * d_vertStep));
d_vertScrollbar->setOverlapSize(ceguimax(1.0f, viewableArea.getHeight() * d_vertOverlap));
d_vertScrollbar->setScrollPosition(d_vertScrollbar->getScrollPosition());
}
if( d_horzScrollbar )
{
// set up horizontal scroll bar values
d_horzScrollbar->setDocumentSize(fabsf(d_contentRect.getWidth()));
d_horzScrollbar->setPageSize(viewableArea.getWidth());
d_horzScrollbar->setStepSize(ceguimax(1.0f, viewableArea.getWidth() * d_horzStep));
d_horzScrollbar->setOverlapSize(ceguimax(1.0f, viewableArea.getWidth() * d_horzOverlap));
d_horzScrollbar->setScrollPosition(d_horzScrollbar->getScrollPosition());
}
}
bool ScrollablePane::isVertScrollbarNeeded(void) const
{
assert(d_container != 0);
return ((fabs(d_contentRect.getHeight()) > getViewableArea().getHeight()) || d_forceVertScroll);
}
bool ScrollablePane::isHorzScrollbarNeeded(void) const
{
assert(d_container != 0);
return ((fabs(d_contentRect.getWidth()) > getViewableArea().getWidth()) || d_forceHorzScroll);
}
