// viewports although
// the ColumnHeaderLayer is not split. Here is some custom calculation
// included that
// might not work correctly in case there are column groups or other
// spanning involved.
columnHeaderLayer.setLayerPainter(new CellLayerPainter() {
@Override
protected boolean isClipLeft(int position) {
// check position-1 because of the row header column count
// as the body is a composite layer, the default transformation
// for the grid is not working correctly