/// <summary>
/// Gets the sub-rectangle of a JScrollPane's area that
/// is actually showing the view
/// </summary>
private Rectangle getShowingRect(JScrollPane pane)
{
Insets ins1 = pane.Viewport.Insets;
Border inner = pane.ViewportBorder;
Insets ins2;
if (inner != null)
{
ins2 = inner.getBorderInsets(pane);
}
else
{
ins2 = new Insets(0, 0, 0, 0);
}
Insets ins3 = new Insets(0, 0, 0, 0);
if (pane.Border != null)
{
ins3 = pane.Border.getBorderInsets(pane);
}
Rectangle r = pane.ViewportBorderBounds;
r.translate(-r.x, -r.y);
r.width -= ins1.left + ins1.right;
r.width -= ins2.left + ins2.right;
r.height -= ins1.top + ins1.bottom;
r.height -= ins2.top + ins2.bottom;
r.x -= ins2.left;
r.x -= ins3.left;
Point p = pane.Viewport.ViewPosition;
r.translate(p.x, p.y);
r = SwingUtilities.convertRectangle(pane.Viewport, r, pane);
return(r);
}
