Examples of org.jfree.chart.plot.PlotRenderingInfo

org.jfree.chart.plot.PlotRenderingInfo
Stores information about the dimensions of a plot and its subplots.

    /**
     * Serialize an instance, restore it, and check for equality.
     */
    public void testSerialization() {


        PlotRenderingInfo p1 = new PlotRenderingInfo(new ChartRenderingInfo());
        PlotRenderingInfo p2 = null;


        try {
            ByteArrayOutputStream buffer = new ByteArrayOutputStream();
            ObjectOutput out = new ObjectOutputStream(buffer);
            out.writeObject(p1);

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        if (this.legend != null) {
            plotArea.setRect(this.legend.draw(g2, nonTitleArea, info));
        }


        // draw the plot (axes and data visualisation)
        PlotRenderingInfo plotInfo = null;
        if (info != null) {
            plotInfo = info.getPlotInfo();
        }
        this.plot.draw(g2, plotArea, anchor, null, plotInfo);

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        // get the origin of the zoom selection in the Java2D space used for
        // drawing the chart (that is, before any scaling to fit the panel)
        Point2D selectOrigin = translateScreenToJava2D(new Point(
                (int) Math.ceil(selection.getX()), 
                (int) Math.ceil(selection.getY())));
        PlotRenderingInfo plotInfo = this.info.getPlotInfo();
        Rectangle2D scaledDataArea = getScreenDataArea(
                (int) selection.getCenterX(), (int) selection.getCenterY());
        if ((selection.getHeight() > 0) && (selection.getWidth() > 0)) {


            double hLower = (selection.getMinX() - scaledDataArea.getMinX())

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     * @param y  the y-coordinate (for subplot selection).
     * 
     * @return The scaled data area.
     */
    public Rectangle2D getScreenDataArea(int x, int y) {
        PlotRenderingInfo plotInfo = this.info.getPlotInfo();
        Rectangle2D result;
        if (plotInfo.getSubplotCount() == 0) {
            result = getScreenDataArea();
        } 
        else {
            // get the origin of the zoom selection in the Java2D space used for
            // drawing the chart (that is, before any scaling to fit the panel)
            Point2D selectOrigin = translateScreenToJava2D(new Point(x, y));
            int subplotIndex = plotInfo.getSubplotIndex(selectOrigin);
            if (subplotIndex == -1) {
                return null;
            }
            result = scale(plotInfo.getSubplotInfo(subplotIndex).getDataArea());
        }
        return result;
    }

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     *
     * @param entities  an entity collection (<code>null</code> permitted).
     */
    public ChartRenderingInfo(EntityCollection entities) {
        this.chartArea = new Rectangle2D.Double();
        this.plotInfo = new PlotRenderingInfo(this);
        this.entities = entities;
    }

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    /**
     * Clears the information recorded by this object.
     */
    public void clear() {
        this.chartArea.setRect(0.0, 0.0, 0.0, 0.0);
        this.plotInfo = new PlotRenderingInfo(this);
        if (this.entities != null) {
            this.entities.clear();
        }
    }

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        }


        Rectangle2D plotArea = nonTitleArea;
 
        // draw the plot (axes and data visualisation)
        PlotRenderingInfo plotInfo = null;
        if (info != null) {
            plotInfo = info.getPlotInfo();
        }
        this.plot.draw(g2, plotArea, anchor, null, plotInfo);

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        // get the origin of the zoom selection in the Java2D space used for
        // drawing the chart (that is, before any scaling to fit the panel)
        Point2D selectOrigin = translateScreenToJava2D(
                new Point(selection.x, selection.y));
        PlotRenderingInfo plotInfo = this.info.getPlotInfo();
        Rectangle scaledDataArea = getScreenDataArea(
                (selection.x + selection.width / 2), 
                (selection.y + selection.height/2));
        if ((selection.height > 0) && (selection.width > 0)) {

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     * @param y  the y-coordinate (for subplot selection).
     * 
     * @return The scaled data area.
     */
    public Rectangle getScreenDataArea(int x, int y) {
        PlotRenderingInfo plotInfo = this.info.getPlotInfo();
        Rectangle result;
        if (plotInfo.getSubplotCount() == 0)
            result = getScreenDataArea();
        else {
            // get the origin of the zoom selection in the Java2D space used for
            // drawing the chart (that is, before any scaling to fit the panel)
            Point2D selectOrigin = translateScreenToJava2D(new Point(x, y));
            int subplotIndex = plotInfo.getSubplotIndex(selectOrigin);
            if (subplotIndex == -1) {
                return null;
            }
            result = scale(plotInfo.getSubplotInfo(subplotIndex).getDataArea());
        }
        return result;
    }

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    /**
     * Test the equals() method.
     */
    public void testEquals() {       
        PlotRenderingInfo p1 = new PlotRenderingInfo(new ChartRenderingInfo());
        PlotRenderingInfo p2 = new PlotRenderingInfo(new ChartRenderingInfo());
        assertTrue(p1.equals(p2));
        assertTrue(p2.equals(p1));
        
        p1.setPlotArea(new Rectangle(2, 3, 4, 5));
        assertFalse(p1.equals(p2));
        p2.setPlotArea(new Rectangle(2, 3, 4, 5));
        assertTrue(p1.equals(p2));
        
        p1.setDataArea(new Rectangle(2, 4, 6, 8));
        assertFalse(p1.equals(p2));
        p2.setDataArea(new Rectangle(2, 4, 6, 8));
        assertTrue(p1.equals(p2));


        p1.addSubplotInfo(new PlotRenderingInfo(null));
        assertFalse(p1.equals(p2));
        p2.addSubplotInfo(new PlotRenderingInfo(null));
        assertTrue(p1.equals(p2));
        
        p1.getSubplotInfo(0).setDataArea(new Rectangle(1, 2, 3, 4));
        assertFalse(p1.equals(p2));
        p2.getSubplotInfo(0).setDataArea(new Rectangle(1, 2, 3, 4));
        assertTrue(p1.equals(p2));
    }

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