PlotRenderingInfo info) {
CategoryItemRendererState state = super.initialise(g2, dataArea, plot,
rendererIndex, info);
// calculate the box width
CategoryAxis domainAxis = getDomainAxis(plot, rendererIndex);
CategoryDataset dataset = plot.getDataset(rendererIndex);
if (dataset != null) {
int columns = dataset.getColumnCount();
int rows = dataset.getRowCount();
double space = 0.0;
PlotOrientation orientation = plot.getOrientation();
if (orientation == PlotOrientation.HORIZONTAL) {
space = dataArea.getHeight();
}
else if (orientation == PlotOrientation.VERTICAL) {
space = dataArea.getWidth();
}
double maxWidth = space * getMaximumBarWidth();
double categoryMargin = 0.0;
double currentItemMargin = 0.0;
if (columns > 1) {
categoryMargin = domainAxis.getCategoryMargin();
}
if (rows > 1) {
currentItemMargin = getItemMargin();
}
double used = space * (1 - domainAxis.getLowerMargin()
- domainAxis.getUpperMargin()
- categoryMargin - currentItemMargin);
if ((rows * columns) > 0) {
state.setBarWidth(Math.min(used / (dataset.getColumnCount()
* dataset.getRowCount()), maxWidth));
}