public CategoryStepRenderer() 
{
                 
        this(false);
}

Creates a new renderer (stagger defaults to false).

 public CategoryStepRenderer(boolean stagger) 
{
        this.stagger = stagger;
}

Creates a new renderer.

Parameters:

stagger - should the horizontal part of the step be staggered by series?

 protected CategoryItemRendererState createState(PlotRenderingInfo info) 
{
        return new State(info);
}

Creates a new state instance. This method is called from #initialise(Graphics2D, Rectangle2D, CategoryPlot, int, PlotRenderingInfo) , and we override it to ensure that the state contains a working Line2D instance.

 public  void drawItem(Graphics2D g2,
    CategoryItemRendererState state,
    Rectangle2D dataArea,
    CategoryPlot plot,
    CategoryAxis domainAxis,
    ValueAxis rangeAxis,
    CategoryDataset dataset,
    int row,
    int column,
    int pass) 
{
        // do nothing if item is not visible
        if (!getItemVisible(row, column)) {
            return;
        }
        Number value = dataset.getValue(row, column);
        if (value == null) {
            return;
        }
        PlotOrientation orientation = plot.getOrientation();
        // current data point...
        double x1s = domainAxis.getCategoryStart(column, getColumnCount(),
                dataArea, plot.getDomainAxisEdge());
        double x1 = domainAxis.getCategoryMiddle(column, getColumnCount(),
                dataArea, plot.getDomainAxisEdge());
        double x1e = 2 * x1 - x1s; // or: x1s + 2*(x1-x1s)
        double y1 = rangeAxis.valueToJava2D(value.doubleValue(), dataArea,
                plot.getRangeAxisEdge());
        g2.setPaint(getItemPaint(row, column));
        g2.setStroke(getItemStroke(row, column));
        if (column != 0) {
            Number previousValue = dataset.getValue(row, column - 1);
            if (previousValue != null) {
                // previous data point...
                double previous = previousValue.doubleValue();
                double x0s = domainAxis.getCategoryStart(column - 1,
                        getColumnCount(), dataArea, plot.getDomainAxisEdge());
                double x0 = domainAxis.getCategoryMiddle(column - 1,
                        getColumnCount(), dataArea, plot.getDomainAxisEdge());
                double x0e = 2 * x0 - x0s; // or: x0s + 2*(x0-x0s)
                double y0 = rangeAxis.valueToJava2D(previous, dataArea,
                        plot.getRangeAxisEdge());
                if (getStagger()) {
                    int xStagger = row * STAGGER_WIDTH;
                    if (xStagger  > (x1s - x0e)) {
                        xStagger = (int) (x1s - x0e);
                    }
                    x1s = x0e + xStagger;
                }
                drawLine(g2, (State) state, orientation, x0e, y0, x1s, y0);
                // extend x0's flat bar
                drawLine(g2, (State) state, orientation, x1s, y0, x1s, y1);
                // upright bar
           }
       }
       drawLine(g2, (State) state, orientation, x1s, y1, x1e, y1);
       // x1's flat bar
       // draw the item labels if there are any...
       if (isItemLabelVisible(row, column)) {
            drawItemLabel(g2, orientation, dataset, row, column, x1, y1,
                    (value.doubleValue() <  0.0));
       }
       // add an item entity, if this information is being collected
       EntityCollection entities = state.getEntityCollection();
       if (entities != null) {
           Rectangle2D hotspot = new Rectangle2D.Double();
           if (orientation == PlotOrientation.VERTICAL) {
               hotspot.setRect(x1s, y1, x1e - x1s, 4.0);
           }
           else {
               hotspot.setRect(y1 - 2.0, x1s, 4.0, x1e - x1s);
           }
           addItemEntity(entities, dataset, row, column, hotspot);
       }
}

Draw a single data item.

 protected  void drawLine(Graphics2D g2,
    CategoryStepRenderer.State state,
    PlotOrientation orientation,
    double x0,
    double y0,
    double x1,
    double y1) 
{
        if (orientation == PlotOrientation.VERTICAL) {
            state.line.setLine(x0, y0, x1, y1);
            g2.draw(state.line);
        }
        else if (orientation == PlotOrientation.HORIZONTAL) {
            state.line.setLine(y0, x0, y1, x1); // switch x and y
            g2.draw(state.line);
        }
}

Draws a line taking into account the specified orientation.

In version 1.0.5, the signature of this method was changed by the addition of the 'state' parameter. This is an incompatible change, but is considered a low risk because it is unlikely that anyone has subclassed this renderer. If this *does* cause trouble for you, please report it as a bug.

 public boolean equals(Object obj) 
{
        if (obj == this) {
            return true;
        }
        if (!(obj instanceof CategoryStepRenderer)) {
            return false;
        }
        CategoryStepRenderer that = (CategoryStepRenderer) obj;
        if (this.stagger != that.stagger) {
            return false;
        }
        return super.equals(obj);
}

Tests this renderer for equality with an arbitrary object.

 public LegendItem getLegendItem(int datasetIndex,
    int series) 
{
        CategoryPlot p = getPlot();
        if (p == null) {
            return null;
        }
        // check that a legend item needs to be displayed...
        if (!isSeriesVisible(series) || !isSeriesVisibleInLegend(series)) {
            return null;
        }
        CategoryDataset dataset = p.getDataset(datasetIndex);
        String label = getLegendItemLabelGenerator().generateLabel(dataset,
                series);
        String description = label;
        String toolTipText = null;
        if (getLegendItemToolTipGenerator() != null) {
            toolTipText = getLegendItemToolTipGenerator().generateLabel(
                    dataset, series);
        }
        String urlText = null;
        if (getLegendItemURLGenerator() != null) {
            urlText = getLegendItemURLGenerator().generateLabel(dataset,
                    series);
        }
        Shape shape = new Rectangle2D.Double(-4.0, -3.0, 8.0, 6.0);
        Paint paint = lookupSeriesPaint(series);
        LegendItem item = new LegendItem(label, description, toolTipText,
                urlText, shape, paint);
        item.setSeriesKey(dataset.getRowKey(series));
        item.setSeriesIndex(series);
        item.setDataset(dataset);
        item.setDatasetIndex(datasetIndex);
        return item;
}

Returns a legend item for a series.

 public boolean getStagger() 
{
        return this.stagger;
}

Returns the flag that controls whether the series steps are staggered.

 public  void setStagger(boolean shouldStagger) 
{
        this.stagger = shouldStagger;
        fireChangeEvent();
}

Sets the flag that controls whether or not the series steps are staggered and sends a RendererChangeEvent to all registered listeners.