public XYBarRenderer() 
{
        this(0.0);
}

The default constructor.

 public XYBarRenderer(double margin) 
{
        super();
        this.margin = margin;
        this.base = 0.0;
        this.useYInterval = false;
        this.gradientPaintTransformer = new StandardGradientPaintTransformer(); 
        this.drawBarOutline = false;
        this.legendBar = new Rectangle2D.Double(-3.0, -5.0, 6.0, 10.0);
}

Constructs a new renderer.

Parameters:

margin - the percentage amount to trim from the width of each bar.

 public Object clone() throws CloneNotSupportedException 
{
        XYBarRenderer result = (XYBarRenderer) super.clone();
        if (this.gradientPaintTransformer != null) {
            result.gradientPaintTransformer = (GradientPaintTransformer)
                ObjectUtilities.clone(this.gradientPaintTransformer);
        }
        result.legendBar = ShapeUtilities.clone(this.legendBar);
        return result;
}

Returns a clone of the renderer.

 public  void drawItem(Graphics2D g2,
    XYItemRendererState state,
    Rectangle2D dataArea,
    PlotRenderingInfo info,
    XYPlot plot,
    ValueAxis domainAxis,
    ValueAxis rangeAxis,
    XYDataset dataset,
    int series,
    int item,
    CrosshairState crosshairState,
    int pass) 
{
        if (!getItemVisible(series, item)) {
            return;   
        }
        IntervalXYDataset intervalDataset = (IntervalXYDataset) dataset;
        double value0;
        double value1;
        if (this.useYInterval) {
            value0 = intervalDataset.getStartYValue(series, item);
            value1 = intervalDataset.getEndYValue(series, item);
        }
        else {
            value0 = this.base;
            value1 = intervalDataset.getYValue(series, item);
        }
        if (Double.isNaN(value0) || Double.isNaN(value1)) {
            return;
        }
        if (value0 < = value1) {
            if (!rangeAxis.getRange().intersects(value0, value1)) {
                return;
            }
        }
        else {
            if (!rangeAxis.getRange().intersects(value1, value0)) {
                return;
            }
        }
        double translatedValue0 = rangeAxis.valueToJava2D(value0, dataArea, 
                plot.getRangeAxisEdge());
        double translatedValue1 = rangeAxis.valueToJava2D(value1, dataArea, 
                plot.getRangeAxisEdge());
        double bottom = Math.min(translatedValue0, translatedValue1);
        double top = Math.max(translatedValue0, translatedValue1);
        double startX = intervalDataset.getStartXValue(series, item);
        if (Double.isNaN(startX)) {
            return;
        }
        double endX = intervalDataset.getEndXValue(series, item);
        if (Double.isNaN(endX)) {
            return;
        }
        if (startX < = endX) {
            if (!domainAxis.getRange().intersects(startX, endX)) {
                return;
            }
        }
        else {
            if (!domainAxis.getRange().intersects(endX, startX)) {
                return;
            }
        }
        RectangleEdge location = plot.getDomainAxisEdge();
        double translatedStartX = domainAxis.valueToJava2D(startX, dataArea, 
                location);
        double translatedEndX = domainAxis.valueToJava2D(endX, dataArea, 
                location);
        double translatedWidth = Math.max(1, Math.abs(translatedEndX 
                - translatedStartX));
        double left = Math.min(translatedStartX, translatedEndX);
        if (getMargin()  > 0.0) {
            double cut = translatedWidth * getMargin();
            translatedWidth = translatedWidth - cut;
            left = left + cut / 2;
        }
        Rectangle2D bar = null;
        PlotOrientation orientation = plot.getOrientation();
        if (orientation == PlotOrientation.HORIZONTAL) {
            // clip left and right bounds to data area
            bottom = Math.max(bottom, dataArea.getMinX());
            top = Math.min(top, dataArea.getMaxX());
            bar = new Rectangle2D.Double(
                bottom, left, top - bottom, translatedWidth);
        }
        else if (orientation == PlotOrientation.VERTICAL) {
            // clip top and bottom bounds to data area
            bottom = Math.max(bottom, dataArea.getMinY());
            top = Math.min(top, dataArea.getMaxY());
            bar = new Rectangle2D.Double(left, bottom, translatedWidth, 
                    top - bottom);
        }
        Paint itemPaint = getItemPaint(series, item);
        if (getGradientPaintTransformer() 
                != null && itemPaint instanceof GradientPaint) {
            GradientPaint gp = (GradientPaint) itemPaint;
            itemPaint = getGradientPaintTransformer().transform(gp, bar);
        }
        g2.setPaint(itemPaint);
        g2.fill(bar);
        if (isDrawBarOutline() 
                && Math.abs(translatedEndX - translatedStartX)  > 3) {
            Stroke stroke = getItemOutlineStroke(series, item);
            Paint paint = getItemOutlinePaint(series, item);
            if (stroke != null && paint != null) {
                g2.setStroke(stroke);
                g2.setPaint(paint);
                g2.draw(bar);                
            }
        }
        if (isItemLabelVisible(series, item)) {
            XYItemLabelGenerator generator = getItemLabelGenerator(series, 
                    item);
            drawItemLabel(g2, dataset, series, item, plot, generator, bar, 
                    value1 <  0.0);
        }
        // update the crosshair point
        double x1 = (startX + endX) / 2.0;
        double y1 = dataset.getYValue(series, item);
        double transX1 = domainAxis.valueToJava2D(x1, dataArea, location);
        double transY1 = rangeAxis.valueToJava2D(y1, dataArea, 
                plot.getRangeAxisEdge());
        int domainAxisIndex = plot.getDomainAxisIndex(domainAxis);
        int rangeAxisIndex = plot.getRangeAxisIndex(rangeAxis);
        updateCrosshairValues(crosshairState, x1, y1, domainAxisIndex, 
                rangeAxisIndex, transX1, transY1, plot.getOrientation());
        EntityCollection entities = state.getEntityCollection();
        if (entities != null) {
            addEntity(entities, bar, dataset, series, item, 0.0, 0.0);
        }
}

Draws the visual representation of a single data item.

 protected  void drawItemLabel(Graphics2D g2,
    XYDataset dataset,
    int series,
    int item,
    XYPlot plot,
    XYItemLabelGenerator generator,
    Rectangle2D bar,
    boolean negative) 
{
                                     
        if (generator == null) {
            return;  // nothing to do
        }
        String label = generator.generateLabel(dataset, series, item);
        if (label == null) {
            return;  // nothing to do   
        }
        Font labelFont = getItemLabelFont(series, item);
        g2.setFont(labelFont);
        Paint paint = getItemLabelPaint(series, item);
        g2.setPaint(paint);
        // find out where to place the label...
        ItemLabelPosition position = null;
        if (!negative) {
            position = getPositiveItemLabelPosition(series, item);
        }
        else {
            position = getNegativeItemLabelPosition(series, item);
        }
        // work out the label anchor point...
        Point2D anchorPoint = calculateLabelAnchorPoint(
                position.getItemLabelAnchor(), bar, plot.getOrientation());
        if (isInternalAnchor(position.getItemLabelAnchor())) {
            Shape bounds = TextUtilities.calculateRotatedStringBounds(label, 
                    g2, (float) anchorPoint.getX(), (float) anchorPoint.getY(),
                    position.getTextAnchor(), position.getAngle(),
                    position.getRotationAnchor());
            if (bounds != null) {
                if (!bar.contains(bounds.getBounds2D())) {
                    if (!negative) {
                        position = getPositiveItemLabelPositionFallback();
                    }
                    else {
                        position = getNegativeItemLabelPositionFallback();
                    }
                    if (position != null) {
                        anchorPoint = calculateLabelAnchorPoint(
                                position.getItemLabelAnchor(), bar, 
                                plot.getOrientation());
                    }
                }
            }
        }
        if (position != null) {
            TextUtilities.drawRotatedString(label, g2, 
                    (float) anchorPoint.getX(), (float) anchorPoint.getY(),
                    position.getTextAnchor(), position.getAngle(), 
                    position.getRotationAnchor());
        }
}

Draws an item label. This method is provided as an alternative to #drawItemLabel(Graphics2D, PlotOrientation, XYDataset, int, int, double, double, boolean) so that the bar can be used to calculate the label anchor point.

 public boolean equals(Object obj) 
{
        if (obj == this) {
            return true;
        }
        if (!(obj instanceof XYBarRenderer)) {
            return false;
        }
        if (!super.equals(obj)) {
            return false;
        }
        XYBarRenderer that = (XYBarRenderer) obj;
        if (this.base != that.base) {
            return false;
        }
        if (this.drawBarOutline != that.drawBarOutline) {
            return false;
        }
        if (this.margin != that.margin) {
            return false;
        }
        if (this.useYInterval != that.useYInterval) {
            return false;
        }
        if (!ObjectUtilities.equal(
            this.gradientPaintTransformer, that.gradientPaintTransformer)
        ) {
            return false;
        }
        if (!ShapeUtilities.equal(this.legendBar, that.legendBar)) {
            return false;   
        }
        if (!ObjectUtilities.equal(this.positiveItemLabelPositionFallback,
                that.positiveItemLabelPositionFallback)) {
            return false;
        }
        if (!ObjectUtilities.equal(this.negativeItemLabelPositionFallback,
                that.negativeItemLabelPositionFallback)) {
            return false;
        }        
        return true;
}

Tests this renderer for equality with an arbitrary object.

 public Range findDomainBounds(XYDataset dataset) 
{
        if (dataset != null) {
            return DatasetUtilities.findDomainBounds(dataset, true);
        }
        else {
            return null;
        }
}

Returns the lower and upper bounds (range) of the x-values in the specified dataset. Since this renderer uses the x-interval in the dataset, this is taken into account for the range.

 public double getBase() 
{
        return this.base;
}

Returns the base value for the bars.

 public GradientPaintTransformer getGradientPaintTransformer() 
{
        return this.gradientPaintTransformer;
}

Returns the gradient paint transformer (an object used to transform gradient paint objects to fit each bar).

 public Shape getLegendBar() 
{
        return this.legendBar;
}

Returns the shape used to represent bars in each legend item.

 public LegendItem getLegendItem(int datasetIndex,
    int series) 
{
        LegendItem result = null;
        XYPlot xyplot = getPlot();
        if (xyplot != null) {
            XYDataset dataset = xyplot.getDataset(datasetIndex);
            if (dataset != null) {
                XYSeriesLabelGenerator lg = getLegendItemLabelGenerator();
                String label = lg.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 = this.legendBar;
                Paint paint = lookupSeriesPaint(series);
                Paint outlinePaint = lookupSeriesOutlinePaint(series);
                Stroke outlineStroke = lookupSeriesOutlineStroke(series);
                if (this.drawBarOutline) {
                    result = new LegendItem(label, description, toolTipText, 
                            urlText, shape, paint, outlineStroke, outlinePaint);
                }
                else {
                    result = new LegendItem(label, description, toolTipText, 
                            urlText, shape, paint);
                }
                result.setDataset(dataset);
                result.setDatasetIndex(datasetIndex);
                result.setSeriesKey(dataset.getSeriesKey(series));
                result.setSeriesIndex(series);
                if (getGradientPaintTransformer() != null) {
                    result.setFillPaintTransformer(
                            getGradientPaintTransformer());
                }
            }
        }
        return result;
}

Returns a default legend item for the specified series. Subclasses should override this method to generate customised items.

 public double getMargin() 
{
        return this.margin;
}

Returns the margin which is a percentage amount by which the bars are trimmed.

 public ItemLabelPosition getNegativeItemLabelPositionFallback() 
{
        return this.negativeItemLabelPositionFallback;
}

Returns the fallback position for negative item labels that don't fit within a bar.

 public ItemLabelPosition getPositiveItemLabelPositionFallback() 
{
        return this.positiveItemLabelPositionFallback;
}

Returns the fallback position for positive item labels that don't fit within a bar.

 public boolean getUseYInterval() 
{
        return this.useYInterval;
}

Returns a flag that determines whether the y-interval from the dataset is used to calculate the length of each bar.

 public XYItemRendererState initialise(Graphics2D g2,
    Rectangle2D dataArea,
    XYPlot plot,
    XYDataset dataset,
    PlotRenderingInfo info) 
{
        XYBarRendererState state = new XYBarRendererState(info);
        ValueAxis rangeAxis = plot.getRangeAxisForDataset(plot.indexOf(
                dataset));
        state.setG2Base(rangeAxis.valueToJava2D(this.base, dataArea, 
                plot.getRangeAxisEdge()));
        return state;
}

Initialises the renderer and returns a state object that should be passed to all subsequent calls to the drawItem() method. Here we calculate the Java2D y-coordinate for zero, since all the bars have their bases fixed at zero.

 public boolean isDrawBarOutline() 
{
        return this.drawBarOutline;
}

Returns a flag that controls whether or not bar outlines are drawn.

 public  void setBase(double base) 
{
        this.base = base;
        fireChangeEvent();
}

Sets the base value for the bars and sends a RendererChangeEvent to all registered listeners. The base value is not used if the dataset's y-interval is being used to determine the bar length.

 public  void setDrawBarOutline(boolean draw) 
{
        this.drawBarOutline = draw;
        fireChangeEvent();
}

Sets the flag that controls whether or not bar outlines are drawn and sends a RendererChangeEvent to all registered listeners.

 public  void setGradientPaintTransformer(GradientPaintTransformer transformer) 
{
        this.gradientPaintTransformer = transformer;
        fireChangeEvent();
}

Sets the gradient paint transformer and sends a RendererChangeEvent to all registered listeners.

 public  void setLegendBar(Shape bar) 
{
        if (bar == null) {
            throw new IllegalArgumentException("Null 'bar' argument.");
        }
        this.legendBar = bar;
        fireChangeEvent();
}

Sets the shape used to represent bars in each legend item and sends a RendererChangeEvent to all registered listeners.

 public  void setMargin(double margin) 
{
        this.margin = margin;
        fireChangeEvent();
}

Sets the percentage amount by which the bars are trimmed and sends a RendererChangeEvent to all registered listeners.

 public  void setNegativeItemLabelPositionFallback(ItemLabelPosition position) 
{
        this.negativeItemLabelPositionFallback = position;
        fireChangeEvent();
}

Sets the fallback position for negative item labels that don't fit within a bar, and sends a RendererChangeEvent to all registered listeners.

 public  void setPositiveItemLabelPositionFallback(ItemLabelPosition position) 
{
        this.positiveItemLabelPositionFallback = position;
        fireChangeEvent();
}

Sets the fallback position for positive item labels that don't fit within a bar, and sends a RendererChangeEvent to all registered listeners.

 public  void setUseYInterval(boolean use) 
{
        if (this.useYInterval != use) {
            this.useYInterval = use;
            fireChangeEvent();
        }
}

Sets the flag that determines whether the y-interval from the dataset is used to calculate the length of each bar, and sends a RendererChangeEvent to all registered listeners.