boxandwhiskerrenderer.java

jfreechart安装程序和使用说明

        Number xMean = bawDataset.getMeanValue(row, column);
        if (xMean != null) {
            double xxMean = rangeAxis.valueToJava2D(xMean.doubleValue(), dataArea, location);
            aRadius = state.getBarWidth() / 4;
            Ellipse2D.Double avgEllipse = new Ellipse2D.Double(
                xxMean - aRadius, yy + aRadius, aRadius * 2, aRadius * 2
            );
            g2.fill(avgEllipse);
            g2.draw(avgEllipse);
        }

        // draw median...
        Number xMedian = bawDataset.getMedianValue(row, column);
        if (xMedian != null) {
            double xxMedian = rangeAxis.valueToJava2D(xMedian.doubleValue(), dataArea, location);
            g2.draw(new Line2D.Double(xxMedian, yy, xxMedian, yy + state.getBarWidth()));
        }
        
        // collect entity and tool tip information...
        if (state.getInfo() != null) {
            EntityCollection entities = state.getInfo().getOwner().getEntityCollection();
            if (entities != null) {
                String tip = null;
                CategoryToolTipGenerator tipster = getToolTipGenerator(row, column);
                if (tipster != null) {
                    tip = tipster.generateToolTip(dataset, row, column);
                }
                String url = null;
                if (getItemURLGenerator(row, column) != null) {
                    url = getItemURLGenerator(row, column).generateURL(dataset, row, column);
                }
                CategoryItemEntity entity = new CategoryItemEntity(
                    box, tip, url, dataset, row, dataset.getColumnKey(column), column
                );
                entities.addEntity(entity);
            }
        }

    } 
        
    /**
     * Draws the visual representation of a single data item when the plot has a vertical
     * orientation.
     *
     * @param g2  the graphics device.
     * @param state  the renderer state.
     * @param dataArea  the area within which the plot is being drawn.
     * @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 row  the row index (zero-based).
     * @param column  the column index (zero-based).
     */
    public void drawVerticalItem(Graphics2D g2, 
                                 CategoryItemRendererState state,
                                 Rectangle2D dataArea,
                                 CategoryPlot plot, 
                                 CategoryAxis domainAxis, 
                                 ValueAxis rangeAxis,
                                 CategoryDataset dataset, 
                                 int row, 
                                 int column) {

        BoxAndWhiskerCategoryDataset bawDataset = (BoxAndWhiskerCategoryDataset) dataset;
        
        double categoryEnd = domainAxis.getCategoryEnd(
            column, getColumnCount(), dataArea, plot.getDomainAxisEdge()
        );
        double categoryStart = domainAxis.getCategoryStart(
            column, getColumnCount(), dataArea, plot.getDomainAxisEdge()
        );
        double categoryWidth = categoryEnd - categoryStart;

        double xx = categoryStart;
        int seriesCount = getRowCount();
        int categoryCount = getColumnCount();

        if (seriesCount > 1) {
            double seriesGap 
                = dataArea.getWidth() * getItemMargin() / (categoryCount * (seriesCount - 1));
            double usedWidth 
                = (state.getBarWidth() * seriesCount) + (seriesGap * (seriesCount - 1));
            // offset the start of the boxes if the total width used is smaller than 
            // the category width
            double offset = (categoryWidth - usedWidth) / 2;
            xx = xx + offset + (row * (state.getBarWidth() + seriesGap));
        } 
        else {
            // offset the start of the box if the box width is smaller than the category width
            double offset = (categoryWidth - state.getBarWidth()) / 2;
            xx = xx + offset;
        } 
        
        double yyAverage = 0.0;
        double yyOutlier;

        Paint p = this.getItemPaint(row, column);
        if (p != null) {
            g2.setPaint(p);
        }
        Stroke s = getItemStroke(row, column);
        g2.setStroke(s);

        double aRadius = 0;                 // average radius

        RectangleEdge location = plot.getRangeAxisEdge();

        Number yQ1 = bawDataset.getQ1Value(row, column);
        Number yQ3 = bawDataset.getQ3Value(row, column);
        Number yMax = bawDataset.getMaxRegularValue(row, column);
        Number yMin = bawDataset.getMinRegularValue(row, column);
        Shape box = null;
        if (yQ1 != null && yQ3 != null && yMax != null && yMin != null) {

            double yyQ1 = rangeAxis.valueToJava2D(yQ1.doubleValue(), dataArea, location);
            double yyQ3 = rangeAxis.valueToJava2D(yQ3.doubleValue(), dataArea, location);
            double yyMax = rangeAxis.valueToJava2D(yMax.doubleValue(), dataArea, location);
            double yyMin = rangeAxis.valueToJava2D(yMin.doubleValue(), dataArea, location);
            double xxmid = xx + state.getBarWidth() / 2.0;
            
            // draw the upper shadow...
            g2.draw(new Line2D.Double(xxmid, yyMax, xxmid, yyQ3));
            g2.draw(new Line2D.Double(xx, yyMax, xx + state.getBarWidth(), yyMax));

            // draw the lower shadow...
            g2.draw(new Line2D.Double(xxmid, yyMin, xxmid, yyQ1));
            g2.draw(new Line2D.Double(xx, yyMin, xx + state.getBarWidth(), yyMin));

            // draw the body...
            box = new Rectangle2D.Double(
                xx, Math.min(yyQ1, yyQ3), state.getBarWidth(), Math.abs(yyQ1 - yyQ3)
            );
            if (this.fillBox) {
                g2.fill(box);
            }
            g2.draw(box);
  
        }
        
        g2.setPaint(this.artifactPaint);

        // draw mean - SPECIAL AIMS REQUIREMENT...
        Number yMean = bawDataset.getMeanValue(row, column);
        if (yMean != null) {
            yyAverage = rangeAxis.valueToJava2D(yMean.doubleValue(), dataArea, location);
            aRadius = state.getBarWidth() / 4;
            Ellipse2D.Double avgEllipse = new Ellipse2D.Double(
                xx + aRadius, yyAverage - aRadius, aRadius * 2, aRadius * 2
            );
            g2.fill(avgEllipse);
            g2.draw(avgEllipse);
        }

        // draw median...
        Number yMedian = bawDataset.getMedianValue(row, column);
        if (yMedian != null) {
            double yyMedian = rangeAxis.valueToJava2D(yMedian.doubleValue(), dataArea, location);
            g2.draw(new Line2D.Double(xx, yyMedian, xx + state.getBarWidth(), yyMedian));
        }
        
        // draw yOutliers...
        double maxAxisValue = rangeAxis.valueToJava2D(rangeAxis.getUpperBound(), dataArea, location)
                              + aRadius;
        double minAxisValue = rangeAxis.valueToJava2D(rangeAxis.getLowerBound(), dataArea, location)
                              - aRadius;

        g2.setPaint(p);

        // draw outliers
        double oRadius = state.getBarWidth() / 3;    // outlier radius
        List outliers = new ArrayList();
        OutlierListCollection outlierListCollection = new OutlierListCollection();

        // From outlier array sort out which are outliers and put these into a list
        // If there are any farouts, set the flag on the OutlierListCollection
        List yOutliers = bawDataset.getOutliers(row, column);
        if (yOutliers != null) {
            for (int i = 0; i < yOutliers.size(); i++) {
                double outlier = ((Number) yOutliers.get(i)).doubleValue();
                if (outlier > bawDataset.getMaxOutlier(row, column).doubleValue()) {
                    outlierListCollection.setHighFarOut(true);
                } 
                else if (outlier < bawDataset.getMinOutlier(row, column).doubleValue()) {
                    outlierListCollection.setLowFarOut(true);
                }
                else if (outlier > bawDataset.getMaxRegularValue(row, column).doubleValue()) {
                    yyOutlier = rangeAxis.valueToJava2D(outlier, dataArea, location);
                    outliers.add(new Outlier(xx + state.getBarWidth() / 2.0, yyOutlier, oRadius));
                }
                else if (outlier < bawDataset.getMinRegularValue(row, column).doubleValue()) {
                    yyOutlier = rangeAxis.valueToJava2D(outlier, dataArea, location);
                    outliers.add(new Outlier(xx + state.getBarWidth() / 2.0, 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);
            }

            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, state.getBarWidth(), oRadius, g2);
                } 
                else {
                    drawEllipse(point, oRadius, g2);
                }
            }

            // draw farout indicators
            if (outlierListCollection.isHighFarOut()) {
                drawHighFarOut(aRadius / 2.0, g2, xx + state.getBarWidth() / 2.0, maxAxisValue);
            }
        
            if (outlierListCollection.isLowFarOut()) {
                drawLowFarOut(aRadius / 2.0, g2, xx + state.getBarWidth() / 2.0, minAxisValue);
            }
        }
        // collect entity and tool tip information...
        if (state.getInfo() != null) {
            EntityCollection entities = state.getInfo().getOwner().getEntityCollection();
            if (entities != null) {
                String tip = null;
                CategoryToolTipGenerator tipster = getToolTipGenerator(row, column);
                if (tipster != null) {
                    tip = tipster.generateToolTip(dataset, row, column);
                }
                String url = null;
                if (getItemURLGenerator(row, column) != null) {
                    url = getItemURLGenerator(row, column).generateURL(dataset, row, column);
                }
                CategoryItemEntity entity = new CategoryItemEntity(
                    box, tip, url, dataset, row, dataset.getColumnKey(column), column
                );
                entities.addEntity(entity);
            }
        }

    }

    /**
     * Draws a dot 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 dot = new Ellipse2D.Double(
            point.getX() + oRadius / 2, point.getY(), oRadius, oRadius
        );
        g2.draw(dot);
    }

    /**
     * Draws two dots to represent the average value of more than one outlier.
     * 
     * @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 dot1 = new Ellipse2D.Double(
            point.getX() - (boxWidth / 2) + oRadius, point.getY(), oRadius, oRadius
        );
        Ellipse2D 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 coordinate.
     * @param m  the y coordinate.
     */
    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 coordinate.
     * @param m  the y coordinate.
     */
    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 an arbitrary object.
     *
     * @param obj  the object (<code>null</code> permitted).
     *
     * @return <code>true</code> or <code>false</code>.
     */
    public boolean equals(Object obj) {
        if (obj == this) {
            return true;   
        }
        if (obj instanceof BoxAndWhiskerRenderer && super.equals(obj)) {
            BoxAndWhiskerRenderer r = (BoxAndWhiskerRenderer) obj;
            if (!ObjectUtils.equal(r.artifactPaint, this.artifactPaint)) {
                return false;
            }
            if (!(r.fillBox == this.fillBox)) {
                return false;   
            }
            if (!(r.itemMargin == this.itemMargin)) {
                return false;   
            }
            return true;
        }
        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.artifactPaint, 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.artifactPaint = SerialUtilities.readPaint(stream);
    }
   
}