xyboxandwhiskerrenderer.java

JFreeChartweb图表

            }
            String url = null;
            if (getURLGenerator() != null) {
                url = getURLGenerator().generateURL(dataset, series, item);
            }
            XYItemEntity entity = new XYItemEntity(body, dataset, series, item, tip, url);
            entities.addEntity(entity);
        }

    }

    /**
     * Draws the visual representation of a single data item.
     *
     * @param g2  the graphics device.
     * @param dataArea  the area within which the plot is being drawn.
     * @param info  collects info about the drawing.
     * @param plot  the plot (can be used to obtain standard color information etc).
     * @param domainAxis  the domain axis.
     * @param rangeAxis  the range axis.
     * @param dataset  the dataset.
     * @param series  the series index (zero-based).
     * @param item  the item index (zero-based).
     * @param crosshairInfo  information about crosshairs on a plot.
     * @param pass  the pass index.
     */
    public void drawVerticalItem(Graphics2D g2, Rectangle2D dataArea,
                                 ChartRenderingInfo info,
                                 XYPlot plot, ValueAxis domainAxis, ValueAxis rangeAxis,
                                 XYDataset dataset, int series, int item,
                                 CrosshairInfo crosshairInfo,
                                 int pass) {

        // setup for collecting optional entity info...
        EntityCollection entities = null;
        if (info != null) {
            entities = info.getEntityCollection();
        }

        BoxAndWhiskerXYDataset boxAndWhiskerData = (BoxAndWhiskerXYDataset) dataset;

        Number x = boxAndWhiskerData.getXValue(series, item);
        Number yMax = boxAndWhiskerData.getMaxRegularValue(series, item);
        Number yMin = boxAndWhiskerData.getMinRegularValue(series, item);
        Number yMedian = boxAndWhiskerData.getMedianValue(series, item);
        Number yAverage = boxAndWhiskerData.getMeanValue(series, item);
        Number yQ1Median = boxAndWhiskerData.getQ1Value(series, item);
        Number yQ3Median = boxAndWhiskerData.getQ3Value(series, item);
        List yOutliers = boxAndWhiskerData.getOutliers(series, item);

        double xx = domainAxis.translateValueToJava2D(x.doubleValue(), dataArea,
                                                      plot.getDomainAxisEdge());

        RectangleEdge location = plot.getRangeAxisEdge();
        double yyMax = rangeAxis.translateValueToJava2D(yMax.doubleValue(), dataArea, location);
        double yyMin = rangeAxis.translateValueToJava2D(yMin.doubleValue(), dataArea, location);
        double yyMedian = rangeAxis.translateValueToJava2D(yMedian.doubleValue(), 
                                                           dataArea, location);
        double yyAverage = 0.0;
        if (yAverage != null) {
            yyAverage = rangeAxis.translateValueToJava2D(yAverage.doubleValue(), 
                                                         dataArea, location);
        }
        double yyQ1Median = rangeAxis.translateValueToJava2D(yQ1Median.doubleValue(),
                                          dataArea, location);    // should be low range
        double yyQ3Median = rangeAxis.translateValueToJava2D(yQ3Median.doubleValue(), 
                                          dataArea, location);    // should be high range
        double yyOutlier;


        double exactBoxWidth = boxWidth;
        double width = this.boxWidth;
        double dataAreaX = dataArea.getMaxX() - dataArea.getMinX();
        double maxBoxPercent = 0.1;
        double maxBoxWidth = dataAreaX * maxBoxPercent;
        if (boxWidth <= 0.0) {
            int itemCount = boxAndWhiskerData.getItemCount(series);
            exactBoxWidth = dataAreaX / itemCount * 4.5 / 7;
            if (exactBoxWidth < 3) {
                width = 3;
            } 
            else if (exactBoxWidth > maxBoxWidth) {
                width = maxBoxWidth;
            } 
            else {
                width = exactBoxWidth;
            }
        }

        Paint p = this.getPaint();
        if (p != null) {
            g2.setPaint(p);
        }
        Stroke s = getItemStroke(series, item);

        g2.setStroke(s);

        // draw the upper shadow
        if ((yyMax < yyQ1Median) && (yyMax < yyQ3Median)) {          // 0,0 = top left...
            g2.draw(new Line2D.Double(xx, yyMax, xx, Math.max(yyQ1Median, yyQ3Median)));
            g2.draw(new Line2D.Double(xx - width / 2, yyMax, xx + width / 2, yyMax));
        }

        // draw the lower shadow
        if ((yyMin > yyQ1Median) && (yyMin > yyQ3Median)) {
            g2.draw(new Line2D.Double(xx, yyMin, xx,
                Math.min(yyQ1Median, yyQ3Median)));
            g2.draw(new Line2D.Double(xx - width / 2, yyMin, xx + width / 2, yyMin));
        }


        // draw the body
        Shape body = null;
        if (yyQ1Median > yyQ3Median) {
            body = new Rectangle2D.Double(xx - width / 2, yyQ3Median, 
                                          width, yyQ1Median - yyQ3Median);
        }
        else {
            body = new Rectangle2D.Double(xx - width / 2, yyQ1Median,
                                          width, yyQ3Median - yyQ1Median);
        }
        g2.fill(body);
        g2.draw(body);

        // draw median
        g2.setPaint(this.artifactPaint);
        g2.draw(new Line2D.Double(xx - width / 2, yyMedian, xx + width / 2, yyMedian));

        double aRadius = 0;                 // average radius
        double oRadius = width / 3;    // outlier radius

        // draw average - SPECIAL AIMS REQUIREMENT
        if (yAverage != null) {
            aRadius = width / 4;
            Ellipse2D.Double avgEllipse = new Ellipse2D.Double(xx - aRadius, yyAverage - aRadius, 
                                                               aRadius * 2, aRadius * 2);
            g2.fill(avgEllipse);
            g2.draw(avgEllipse);
        }

        List outliers = new ArrayList();
        OutlierListCollection outlierListCollection = new OutlierListCollection();


        /* From outlier array sort out which are outliers and put these into an arraylist
         * If there are any farouts, set the flag on the OutlierListCollection
         */

        for (int i = 0; i < yOutliers.size(); i++) {
            double outlier = ((Number) yOutliers.get(i)).doubleValue();
            if (outlier > boxAndWhiskerData.getMaxOutlier(series, item).doubleValue()) {
                outlierListCollection.setHighFarOut(true);
            } 
            else if (outlier < boxAndWhiskerData.getMinOutlier(series, item).doubleValue()) {
                outlierListCollection.setLowFarOut(true);
            } 
            else if (outlier > boxAndWhiskerData.getMaxRegularValue(series, item).doubleValue()) {
                yyOutlier = rangeAxis.translateValueToJava2D(outlier, dataArea, location);
                outliers.add(new Outlier(xx, yyOutlier, oRadius));
            }
            else if (outlier < boxAndWhiskerData.getMinRegularValue(series, item).doubleValue()) {
                yyOutlier = rangeAxis.translateValueToJava2D(outlier, dataArea, location);
                outliers.add(new Outlier(xx, yyOutlier, oRadius));                
            }
            Collections.sort(outliers);
        }

        // Process outliers. Each outlier is either added to the appropriate outlier list
        // or a new outlier list is made
        for (Iterator iterator = outliers.iterator(); iterator.hasNext();) {
            Outlier outlier = (Outlier) iterator.next();
            outlierListCollection.add(outlier);
        }

        // draw yOutliers
        double maxAxisValue = rangeAxis.translateValueToJava2D(rangeAxis.getUpperBound(), 
                                  dataArea, location) + aRadius;
        double minAxisValue = rangeAxis.translateValueToJava2D(rangeAxis.getLowerBound(), 
                                  dataArea, location) - aRadius;

        //g2.setPaint(p);

        // draw outliers
        for (Iterator iterator = outlierListCollection.iterator(); iterator.hasNext();) {
            OutlierList list = (OutlierList) iterator.next();
            Outlier outlier = list.getAveragedOutlier();
            Point2D point = outlier.getPoint();

            if (list.isMultiple()) {
                drawMultipleEllipse(point, width, oRadius, g2);
            } 
            else {
                drawEllipse(point, oRadius, g2);
            }
        }

        // draw farout
        if (outlierListCollection.isHighFarOut()) {
            drawHighFarOut(aRadius, g2, xx, maxAxisValue);
        }

        if (outlierListCollection.isLowFarOut()) {
            drawLowFarOut(aRadius, g2, xx, minAxisValue);
        }
        
        // add an entity for the item...
        if (entities != null) {
            String tip = null;
            if (getToolTipGenerator() != null) {
                tip = getToolTipGenerator().generateToolTip(dataset, series, item);
            }
            String url = null;
            if (getURLGenerator() != null) {
                url = getURLGenerator().generateURL(dataset, series, item);
            }
            XYItemEntity entity = new XYItemEntity(body, dataset, series, item, tip, url);
            entities.addEntity(entity);
        }

    }

    /**
     * Draws an ellipse to represent an outlier.
     * 
     * @param point  the location.
     * @param oRadius  the radius.
     * @param g2  the graphics device.
     */
    private void drawEllipse(Point2D point, double oRadius, Graphics2D g2) {
        Ellipse2D.Double dot = new Ellipse2D.Double(point.getX() + oRadius / 2, point.getY(), 
                                                    oRadius, oRadius);
        g2.draw(dot);
    }

    /**
     * Draws two ellipses to represent overlapping outliers.
     * 
     * @param point  the location.
     * @param boxWidth  the box width.
     * @param oRadius  the radius.
     * @param g2  the graphics device.
     */
    private void drawMultipleEllipse(Point2D point, double boxWidth, double oRadius, 
                                     Graphics2D g2) {
                                         
        Ellipse2D.Double dot1 = new Ellipse2D.Double(point.getX() - (boxWidth / 2) + oRadius, 
                                                     point.getY(), oRadius, oRadius);
        Ellipse2D.Double dot2 = new Ellipse2D.Double(point.getX() + (boxWidth / 2), 
                                                     point.getY(), oRadius, oRadius);
        g2.draw(dot1);
        g2.draw(dot2);
        
    }

    /**
     * Draws a triangle to indicate the presence of far out values.
     * 
     * @param aRadius  the radius.
     * @param g2  the graphics device.
     * @param xx  the x value.
     * @param m  the max y value.
     */
    private void drawHighFarOut(double aRadius, Graphics2D g2, double xx, double m) {
        double side = aRadius * 2;
        g2.draw(new Line2D.Double(xx - side, m + side, xx + side, m + side));
        g2.draw(new Line2D.Double(xx - side, m + side, xx, m));
        g2.draw(new Line2D.Double(xx + side, m + side, xx, m));
    }

    /**
     * Draws a triangle to indicate the presence of far out values.
     * 
     * @param aRadius  the radius.
     * @param g2  the graphics device.
     * @param xx  the x value.
     * @param m  the min y value.
     */
    private void drawLowFarOut(double aRadius, Graphics2D g2, double xx, double m) {
        double side = aRadius * 2;
        g2.draw(new Line2D.Double(xx - side, m - side, xx + side, m - side));
        g2.draw(new Line2D.Double(xx - side, m - side, xx, m));
        g2.draw(new Line2D.Double(xx + side, m - side, xx, m));
    }

    /**
     * Tests this renderer for equality with another object.
     *
     * @param obj  the object.
     *
     * @return <code>true</code> or <code>false</code>.
     */
    public boolean equals(Object obj) {

        if (obj == null) {
            return false;
        }

        if (obj == this) {
            return true;
        }

        if (obj instanceof XYBoxAndWhiskerRenderer) {
            XYBoxAndWhiskerRenderer renderer = (XYBoxAndWhiskerRenderer) obj;
            boolean result = super.equals(obj);
            result = result && (this.boxWidth == renderer.getBoxWidth());
            result = result && (this.paint.equals(renderer.getPaint()));
            return result;
        }

        return false;

    }

    /**
     * Provides serialization support.
     *
     * @param stream  the output stream.
     *
     * @throws IOException  if there is an I/O error.
     */
    private void writeObject(ObjectOutputStream stream) throws IOException {

        stream.defaultWriteObject();
        SerialUtilities.writePaint(this.paint, stream);

    }

    /**
     * Provides serialization support.
     *
     * @param stream  the input stream.
     *
     * @throws IOException  if there is an I/O error.
     * @throws ClassNotFoundException  if there is a classpath problem.
     */
    private void readObject(ObjectInputStream stream) throws IOException, ClassNotFoundException {

        stream.defaultReadObject();
        this.paint = SerialUtilities.readPaint(stream);

    }

    /**
     * Returns a clone of the renderer.
     * 
     * @return A clone.
     * 
     * @throws CloneNotSupportedException  if the renderer cannot be cloned.
     */
    public Object clone() throws CloneNotSupportedException {
        return super.clone();
    }

}