Point viewLocation = port.getViewLocation();
Dimension diff = calculateDiff(portBounds, exposeRegion);
if (diff != null) {
viewLocation.x -= diff.width;
viewLocation.y -= diff.height;
canvas.scrollSmoothTo(viewLocation.x, viewLocation.y);
}
}
private void exposeVertical(int offset) {
if (_viewer == null) {