/** Calculate the minimum and preferred size for every row and column. */
private void calculateSizes() {
Dimension dim[] = new Dimension[child.size()];
for (int i = 0; i < dim.length; i++) dim[i] = child.get(i).widget.getMinimumSize();
minRowSize = calculateRequiredSizes(dim, true);
minColSize = calculateRequiredSizes(dim, false);
for (int i = 0; i < dim.length; i++) {
ChildInfo info = child.get(i);
LayoutInfo layout = (info.layout == null ? defaultLayout : info.layout);
dim[i] = layout.getPreferredSize(info.widget);
}
prefRowSize = calculateRequiredSizes(dim, true);
prefColSize = calculateRequiredSizes(dim, false);
}
