xyboxandwhiskerrenderer.java

java图形利器

     * Draws the visual representation of a single data item.
     *
     * @param g2  the graphics device.
     * @param state  the renderer state.
     * @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 crosshairState  crosshair information for the plot 
     *                        (<code>null</code> permitted).
     * @param pass  the pass index.
     */
    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) {

        PlotOrientation orientation = plot.getOrientation();

        if (orientation == PlotOrientation.HORIZONTAL) {
            drawHorizontalItem(g2, dataArea, info, plot, domainAxis, rangeAxis,
                    dataset, series, item, crosshairState, pass);
        }
        else if (orientation == PlotOrientation.VERTICAL) {
            drawVerticalItem(g2, dataArea, info, plot, domainAxis, rangeAxis,
                    dataset, series, item, crosshairState, pass);
        }

    }

    /**
     * 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 crosshairState  crosshair information for the plot 
     *                        (<code>null</code> permitted).
     * @param pass  the pass index.
     */
    public void drawHorizontalItem(Graphics2D g2, 
                                   Rectangle2D dataArea,
                                   PlotRenderingInfo info,
                                   XYPlot plot, 
                                   ValueAxis domainAxis, 
                                   ValueAxis rangeAxis,
                                   XYDataset dataset, 
                                   int series, 
                                   int item,
                                   CrosshairState crosshairState,
                                   int pass) {

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

        BoxAndWhiskerXYDataset boxAndWhiskerData 
                = (BoxAndWhiskerXYDataset) dataset;

        Number x = boxAndWhiskerData.getX(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);
        
        double xx = domainAxis.valueToJava2D(x.doubleValue(), dataArea, 
                plot.getDomainAxisEdge());

        RectangleEdge location = plot.getRangeAxisEdge();
        double yyMax = rangeAxis.valueToJava2D(yMax.doubleValue(), dataArea, 
                location);
        double yyMin = rangeAxis.valueToJava2D(yMin.doubleValue(), dataArea, 
                location);
        double yyMedian = rangeAxis.valueToJava2D(yMedian.doubleValue(), 
                dataArea, location);
        double yyAverage = 0.0;
        if (yAverage != null) {
            yyAverage = rangeAxis.valueToJava2D(yAverage.doubleValue(), 
                    dataArea, location);
        }
        double yyQ1Median = rangeAxis.valueToJava2D(yQ1Median.doubleValue(), 
                dataArea, location);
        double yyQ3Median = rangeAxis.valueToJava2D(yQ3Median.doubleValue(), 
                dataArea, location);
        
        double exactBoxWidth = getBoxWidth();
        double width = exactBoxWidth;
        double dataAreaX = dataArea.getHeight();
        double maxBoxPercent = 0.1;
        double maxBoxWidth = dataAreaX * maxBoxPercent;
        if (exactBoxWidth <= 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 = getBoxPaint();
        if (p != null) {
            g2.setPaint(p);
        }
        Stroke s = getItemStroke(series, item);
        g2.setStroke(s);

        // draw the upper shadow
        g2.draw(new Line2D.Double(yyMax, xx, yyQ3Median, xx));
        g2.draw(new Line2D.Double(yyMax, xx - width / 2, yyMax, 
                xx + width / 2));

        // draw the lower shadow
        g2.draw(new Line2D.Double(yyMin, xx, yyQ1Median, xx));
        g2.draw(new Line2D.Double(yyMin, xx - width / 2, yyMin, 
                xx + width / 2));

        // draw the body
        Shape box = null;
        if (yyQ1Median < yyQ3Median) {
            box = new Rectangle2D.Double(yyQ1Median, xx - width / 2, 
                    yyQ3Median - yyQ1Median, width);
        }
        else {
            box = new Rectangle2D.Double(yyQ3Median, xx - width / 2, 
                    yyQ1Median - yyQ3Median, width);
        }
        if (getBoxPaint() != null) {
            g2.setPaint(getBoxPaint());
        }
        if (this.fillBox) {
            g2.fill(box);   
        }
        g2.draw(box);

        // draw median
        g2.setPaint(getArtifactPaint());
        g2.draw(new Line2D.Double(yyMedian, 
                xx - width / 2, yyMedian, xx + width / 2));
        
        // draw average - SPECIAL AIMS REQUIREMENT
        if (yAverage != null) {
            double aRadius = width / 4;
            Ellipse2D.Double avgEllipse = new Ellipse2D.Double(
                    yyAverage - aRadius, xx - aRadius, aRadius * 2, 
                    aRadius * 2);
            g2.fill(avgEllipse);
            g2.draw(avgEllipse);
        }
        
        // FIXME: draw outliers
        
        // add an entity for the item...
        if (entities != null && box.intersects(dataArea)) {
            addEntity(entities, box, dataset, series, item, yyAverage, xx);
        }

    }

    /**
     * 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 crosshairState  crosshair information for the plot 
     *                        (<code>null</code> permitted).
     * @param pass  the pass index.
     */
    public void drawVerticalItem(Graphics2D g2, 
                                 Rectangle2D dataArea,
                                 PlotRenderingInfo info,
                                 XYPlot plot, 
                                 ValueAxis domainAxis, 
                                 ValueAxis rangeAxis,
                                 XYDataset dataset, 
                                 int series, 
                                 int item,
                                 CrosshairState crosshairState,
                                 int pass) {

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

        BoxAndWhiskerXYDataset boxAndWhiskerData 
            = (BoxAndWhiskerXYDataset) dataset;

        Number x = boxAndWhiskerData.getX(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.valueToJava2D(x.doubleValue(), dataArea, 
                plot.getDomainAxisEdge());

        RectangleEdge location = plot.getRangeAxisEdge();
        double yyMax = rangeAxis.valueToJava2D(yMax.doubleValue(), dataArea, 
                location);
        double yyMin = rangeAxis.valueToJava2D(yMin.doubleValue(), dataArea, 
                location);
        double yyMedian = rangeAxis.valueToJava2D(yMedian.doubleValue(), 
                dataArea, location);
        double yyAverage = 0.0;
        if (yAverage != null) {
            yyAverage = rangeAxis.valueToJava2D(yAverage.doubleValue(), 
                    dataArea, location);
        }
        double yyQ1Median = rangeAxis.valueToJava2D(yQ1Median.doubleValue(), 
                dataArea, location);
        double yyQ3Median = rangeAxis.valueToJava2D(yQ3Median.doubleValue(), 
                dataArea, location);
        double yyOutlier;


        double exactBoxWidth = getBoxWidth();
        double width = exactBoxWidth;
        double dataAreaX = dataArea.getMaxX() - dataArea.getMinX();
        double maxBoxPercent = 0.1;
        double maxBoxWidth = dataAreaX * maxBoxPercent;
        if (exactBoxWidth <= 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;