// Enables and sizes one of the scrollbars.
void ElementScroll::EnableScrollbar(Orientation orientation, float element_width)
{
if (!scrollbars[orientation].enabled)
{
CreateScrollbar(orientation);
scrollbars[orientation].element->SetProperty(VISIBILITY, "visible");
scrollbars[orientation].enabled = true;
}
// Determine the size of the scrollbar.
Box box;
LayoutEngine::BuildBox(box, Vector2f(element_width, element_width), scrollbars[orientation].element);
if (orientation == VERTICAL)
scrollbars[orientation].size = box.GetSize(Box::MARGIN).x;
if (orientation == HORIZONTAL)
{
if (box.GetSize().y < 0)
scrollbars[orientation].size = box.GetCumulativeEdge(Box::CONTENT, Box::LEFT) +
box.GetCumulativeEdge(Box::CONTENT, Box::RIGHT) +
scrollbars[orientation].element->ResolveProperty(HEIGHT, element_width);
else
scrollbars[orientation].size = box.GetSize(Box::MARGIN).y;
}
}
