org.jfree.chart.plot.Plot Java Examples

/**
 * Applies this theme to the supplied chart.
 *
 * @param chart  the chart (<code>null</code> not permitted).
 */
@Override
public void apply(JFreeChart chart) {
    ParamChecks.nullNotPermitted(chart, "chart");
    TextTitle title = chart.getTitle();
    if (title != null) {
        title.setFont(this.extraLargeFont);
        title.setPaint(this.titlePaint);
    }

    int subtitleCount = chart.getSubtitleCount();
    for (int i = 0; i < subtitleCount; i++) {
        applyToTitle(chart.getSubtitle(i));
    }

    chart.setBackgroundPaint(this.chartBackgroundPaint);

    // now process the plot if there is one
    Plot plot = chart.getPlot();
    if (plot != null) {
        applyToPlot(plot);
    }
}
 

/**
 * Restores the auto-range calculation on the domain axis.
 */
public void restoreAutoDomainBounds() {
    Plot plot = this.chart.getPlot();
    if (plot instanceof Zoomable) {
        Zoomable z = (Zoomable) plot;
        // here we tweak the notify flag on the plot so that only
        // one notification happens even though we update multiple
        // axes...
        boolean savedNotify = plot.isNotify();
        plot.setNotify(false);
        // we need to guard against this.zoomPoint being null
        Point2D zp = (this.zoomPoint != null
                ? this.zoomPoint : new Point());
        z.zoomDomainAxes(0.0, this.info.getPlotInfo(), zp);
        plot.setNotify(savedNotify);
    }
}
 

/**
 * Handles a mouse wheel event from the underlying chart panel.
 *
 * @param e  the event.
 */
@Override
public void mouseWheelMoved(MouseWheelEvent e) {
    JFreeChart chart = this.chartPanel.getChart();
    if (chart == null) {
        return;
    }
    Plot plot = chart.getPlot();
    if (plot instanceof Zoomable) {
        Zoomable zoomable = (Zoomable) plot;
        handleZoomable(zoomable, e);
    }
    else if (plot instanceof PiePlot) {
        PiePlot pp = (PiePlot) plot;
        pp.handleMouseWheelRotation(e.getWheelRotation());
    }
}
 

/**
 * Handle the case where a plot implements the {@link Zoomable} interface.
 *
 * @param zoomable  the zoomable plot.
 * @param e  the mouse wheel event.
 */
private void handleZoomable(ChartCanvas canvas, Zoomable zoomable, 
        ScrollEvent e) {
    // don't zoom unless the mouse pointer is in the plot's data area
    ChartRenderingInfo info = canvas.getRenderingInfo();
    PlotRenderingInfo pinfo = info.getPlotInfo();
    Point2D p = new Point2D.Double(e.getX(), e.getY());
    if (pinfo.getDataArea().contains(p)) {
        Plot plot = (Plot) zoomable;
        // do not notify while zooming each axis
        boolean notifyState = plot.isNotify();
        plot.setNotify(false);
        int clicks = (int) e.getDeltaY();
        double zf = 1.0 + this.zoomFactor;
        if (clicks < 0) {
            zf = 1.0 / zf;
        }
        if (true) { //this.chartPanel.isDomainZoomable()) {
            zoomable.zoomDomainAxes(zf, pinfo, p, true);
        }
        if (true) { //this.chartPanel.isRangeZoomable()) {
            zoomable.zoomRangeAxes(zf, pinfo, p, true);
        }
        plot.setNotify(notifyState);  // this generates the change event too
    } 
}
 

/**
 * Applies this theme to the supplied chart.
 *
 * @param chart  the chart (<code>null</code> not permitted).
 */
@Override
public void apply(JFreeChart chart) {
    ParamChecks.nullNotPermitted(chart, "chart");
    TextTitle title = chart.getTitle();
    if (title != null) {
        title.setFont(this.extraLargeFont);
        title.setPaint(this.titlePaint);
    }

    int subtitleCount = chart.getSubtitleCount();
    for (int i = 0; i < subtitleCount; i++) {
        applyToTitle(chart.getSubtitle(i));
    }

    chart.setBackgroundPaint(this.chartBackgroundPaint);

    // now process the plot if there is one
    Plot plot = chart.getPlot();
    if (plot != null) {
        applyToPlot(plot);
    }
}
 

/**
 * Increases the length the range axis, centered about the given
 * coordinate on the screen.  The length of the range axis is increased
 * by the value of {@link #getZoomOutFactor()}.
 *
 * @param x  the x coordinate (in screen coordinates).
 * @param y  the y-coordinate (in screen coordinates).
 */
public void zoomOutRange(double x, double y) {
    Plot p = this.chart.getPlot();
    if (p instanceof Zoomable) {
        Zoomable z = (Zoomable) p;
        z.zoomRangeAxes(this.zoomOutFactor, this.info.getPlotInfo(),
                translateScreenToJava2D(new Point((int) x, (int) y)));
    }
}
 

/**
 * Handle the case where a plot implements the {@link Zoomable} interface.
 *
 * @param zoomable  the zoomable plot.
 * @param e  the mouse wheel event.
 */
private void handleZoomable(Zoomable zoomable, MouseWheelEvent e) {
    // don't zoom unless the mouse pointer is in the plot's data area
    ChartRenderingInfo info = this.chartPanel.getChartRenderingInfo();
    PlotRenderingInfo pinfo = info.getPlotInfo();
    Point2D p = this.chartPanel.translateScreenToJava2D(e.getPoint());
    if (!pinfo.getDataArea().contains(p)) {
        return;
    }

    Plot plot = (Plot) zoomable;
    // do not notify while zooming each axis
    boolean notifyState = plot.isNotify();
    plot.setNotify(false);
    int clicks = e.getWheelRotation();
    double zf = 1.0 + this.zoomFactor;
    if (clicks < 0) {
        zf = 1.0 / zf;
    }
    if (chartPanel.isDomainZoomable()) {
        zoomable.zoomDomainAxes(zf, pinfo, p, true);
    }
    if (chartPanel.isRangeZoomable()) {
        zoomable.zoomRangeAxes(zf, pinfo, p, true);
    }
    plot.setNotify(notifyState);  // this generates the change event too
}
 

/**
 * Clones the object, and takes care of listeners.
 * Note: caller shall register its own listeners on cloned graph.
 *
 * @return A clone.
 *
 * @throws CloneNotSupportedException if the chart is not cloneable.
 */
@Override
public Object clone() throws CloneNotSupportedException {
    JFreeChart chart = (JFreeChart) super.clone();

    chart.renderingHints = (RenderingHints) this.renderingHints.clone();
    // private boolean borderVisible;
    // private transient Stroke borderStroke;
    // private transient Paint borderPaint;

    if (this.title != null) {
        chart.title = (TextTitle) this.title.clone();
        chart.title.addChangeListener(chart);
    }

    chart.subtitles = new ArrayList();
    for (int i = 0; i < getSubtitleCount(); i++) {
        Title subtitle = (Title) getSubtitle(i).clone();
        chart.subtitles.add(subtitle);
        subtitle.addChangeListener(chart);
    }

    if (this.plot != null) {
        chart.plot = (Plot) this.plot.clone();
        chart.plot.addChangeListener(chart);
    }

    chart.progressListeners = new EventListenerList();
    chart.changeListeners = new EventListenerList();
    return chart;
}
 

/**
 * A flag that controls mouse-based zooming on the vertical axis.
 *
 * @param flag  <code>true</code> enables zooming.
 */
public void setRangeZoomable(boolean flag) {
    if (flag) {
        Plot plot = this.chart.getPlot();
        if (plot instanceof Zoomable) {
            Zoomable z = (Zoomable) plot;
            this.rangeZoomable = flag && (z.isRangeZoomable());
        }
    }
    else {
        this.rangeZoomable = false;
    }
}
 

/**
 * Test that the chart is using an xy plot with time as the domain axis.
 *
 * @param chart  the chart.
 */
private void checkChart(JFreeChart chart) {
    Plot plot = chart.getPlot();
    if (!(plot instanceof PolarPlot)) {
        throw new IllegalArgumentException("plot is not a PolarPlot");
   }
}
 

/**
 * Clones the object, and takes care of listeners.
 * Note: caller shall register its own listeners on cloned graph.
 * 
 * @return A clone.
 * 
 * @throws CloneNotSupportedException if the chart is not cloneable.
 */
public Object clone() throws CloneNotSupportedException {
    JFreeChart chart = (JFreeChart) super.clone();

    chart.renderingHints = (RenderingHints) this.renderingHints.clone();
    // private boolean borderVisible;
    // private transient Stroke borderStroke;
    // private transient Paint borderPaint;

    if (this.title != null) {
        chart.title = (TextTitle) this.title.clone();
        chart.title.addChangeListener(chart);
    }

    chart.subtitles = new ArrayList();
    for (int i = 0; i < getSubtitleCount(); i++) {
        Title subtitle = (Title) getSubtitle(i).clone();
        chart.subtitles.add(subtitle);
        subtitle.addChangeListener(chart);
    }

    if (this.plot != null) {
        chart.plot = (Plot) this.plot.clone();
        chart.plot.addChangeListener(chart);
    }

    chart.progressListeners = new EventListenerList();
    chart.changeListeners = new EventListenerList();
    return chart;
}
 

@Override
public Collection<String> resolveXAxis(int axisIndex) {
	Plot p = chart.getPlot();
	Collection<String> names = new LinkedList<>();
	if (p instanceof XYPlot) {
		XYPlot plot = (XYPlot) p;
		for (int i = 0; i < plot.getDomainAxisCount(); i++) {
			ValueAxis domain = plot.getDomainAxis(i);
			names.add(domain.getLabel());
		}
	}
	return names;
}
 

/**
 * Restores the auto-range calculation on both axes.
 */
public void restoreAutoBounds() {
    Plot plot = this.chart.getPlot();
    if (plot == null) {
        return;
    }
    // here we tweak the notify flag on the plot so that only
    // one notification happens even though we update multiple
    // axes...
    boolean savedNotify = plot.isNotify();
    plot.setNotify(false);
    restoreAutoDomainBounds();
    restoreAutoRangeBounds();
    plot.setNotify(savedNotify);
}
 

@Override
public Collection<String> resolveYAxis(int axisIndex) {
	Plot p = chart.getPlot();
	Collection<String> names = new LinkedList<>();
	if (p instanceof XYPlot) {
		XYPlot plot = (XYPlot) p;
		for (int i = 0; i < plot.getRangeAxisCount(); i++) {
			ValueAxis domain = plot.getRangeAxis(i);
			names.add(domain.getLabel());
		}
	}
	return names;
}
 

/**
 * A flag that controls mouse-based zooming on the vertical axis.
 *
 * @param flag  <code>true</code> enables zooming.
 */
public void setRangeZoomable(boolean flag) {
    if (flag) {
        Plot plot = this.chart.getPlot();
        if (plot instanceof Zoomable) {
            Zoomable z = (Zoomable) plot;
            this.rangeZoomable = flag && (z.isRangeZoomable());
        }
    }
    else {
        this.rangeZoomable = false;
    }
}
 

@Override
public void customize(JFreeChart jfc, JRChart jrc) 
{
	Plot plot = jfc.getPlot();
	if (plot instanceof XYPlot)
	{
		((XYPlot)plot).setRenderer(new XYStepRenderer());
	}
}
 

/**
 * Sets the flag that controls whether or not zooming is enabled for the
 * domain axis.  A check is made to ensure that the current plot supports
 * zooming for the domain values.
 *
 * @param flag  <code>true</code> enables zooming if possible.
 */
public void setDomainZoomable(boolean flag) {
    if (flag) {
        Plot plot = this.chart.getPlot();
        if (plot instanceof Zoomable) {
            Zoomable z = (Zoomable) plot;
            this.domainZoomable = flag && (z.isDomainZoomable());
        }
    }
    else {
        this.domainZoomable = false;
    }
}
 

/**
 * Sets the flag that controls whether or not zooming is enabled for the
 * domain axis.  A check is made to ensure that the current plot supports
 * zooming for the domain values.
 *
 * @param flag  <code>true</code> enables zooming if possible.
 */
public void setDomainZoomable(boolean flag) {
    if (flag) {
        Plot plot = this.chart.getPlot();
        if (plot instanceof Zoomable) {
            Zoomable z = (Zoomable) plot;
            this.domainZoomable = flag && (z.isDomainZoomable());
        }
    }
    else {
        this.domainZoomable = false;
    }
}
 

/**
 * Reserves the space required to draw the color bar.
 *
 * @param g2  the graphics device.
 * @param plot  the plot that the axis belongs to.
 * @param plotArea  the area within which the plot should be drawn.
 * @param dataArea  the data area.
 * @param edge  the axis location.
 * @param space  the space already reserved.
 *
 * @return The space required to draw the axis in the specified plot area.
 */
public AxisSpace reserveSpace(Graphics2D g2, Plot plot, 
                              Rectangle2D plotArea,
                              Rectangle2D dataArea, RectangleEdge edge, 
                              AxisSpace space) {

    AxisSpace result = this.axis.reserveSpace(
        g2, plot, plotArea, edge, space
    );
    double thickness = calculateBarThickness(dataArea, edge);
    result.add(thickness + 2 * this.outerGap, edge);
    return result;

}
 

/**
 * Restores the auto-range calculation on the domain axis.
 */
public void restoreAutoDomainBounds() {
    Plot p = this.chart.getPlot();
    if (p instanceof Zoomable) {
        Zoomable z = (Zoomable) p;
        // we need to guard against this.zoomPoint being null
        org.eclipse.swt.graphics.Point zp =
                (this.zoomPoint != null ? this.zoomPoint
                : new org.eclipse.swt.graphics.Point(0, 0));
        z.zoomDomainAxes(0.0, this.info.getPlotInfo(),
                SWTUtils.toAwtPoint(zp));
    }
}
 

/**
 * Sets the chart that is displayed in the panel.
 *
 * @param chart  the chart (<code>null</code> permitted).
 */
public void setChart(JFreeChart chart) {

    // stop listening for changes to the existing chart
    if (this.chart != null) {
        this.chart.removeChangeListener(this);
        this.chart.removeProgressListener(this);
    }

    // add the new chart
    this.chart = chart;
    if (chart != null) {
        this.chart.addChangeListener(this);
        this.chart.addProgressListener(this);
        Plot plot = chart.getPlot();
        this.domainZoomable = false;
        this.rangeZoomable = false;
        if (plot instanceof Zoomable) {
            Zoomable z = (Zoomable) plot;
            this.domainZoomable = z.isDomainZoomable();
            this.rangeZoomable = z.isRangeZoomable();
            this.orientation = z.getOrientation();
        }
    }
    else {
        this.domainZoomable = false;
        this.rangeZoomable = false;
    }
    if (this.useBuffer) {
        this.refreshBuffer = true;
    }
    repaint();

}
 

/**
 * Decreases the length of the range axis, centered about the given
 * coordinate on the screen.  The length of the range axis is reduced by
 * the value of {@link #getZoomInFactor()}.
 *
 * @param x  the x-coordinate (in screen coordinates).
 * @param y  the y coordinate (in screen coordinates).
 */
public void zoomInRange(double x, double y) {
    Plot p = this.chart.getPlot();
    if (p instanceof Zoomable) {
        Zoomable z = (Zoomable) p;
        z.zoomRangeAxes(this.zoomInFactor, this.info.getPlotInfo(), 
                translateScreenToJava2D(new Point((int) x, (int) y)));
    }
}
 

/**
 * A flag that controls mouse-based zooming on the vertical axis.
 *
 * @param flag  <code>true</code> enables zooming.
 */
public void setRangeZoomable(boolean flag) {
    if (flag) {
        Plot plot = this.chart.getPlot();
        if (plot instanceof Zoomable) {
            Zoomable z = (Zoomable) plot;
            this.rangeZoomable = flag && (z.isRangeZoomable());  
        }
    }
    else {
        this.rangeZoomable = false;
    }
}
 

/**
 * Decreases the length of the range axis, centered about the given
 * coordinate on the screen.  The length of the range axis is reduced by
 * the value of {@link #getZoomInFactor()}.
 *
 * @param x  the x-coordinate (in screen coordinates).
 * @param y  the y coordinate (in screen coordinates).
 */
public void zoomInRange(double x, double y) {
    Plot p = this.chart.getPlot();
    if (p instanceof Zoomable) {
        Zoomable z = (Zoomable) p;
        z.zoomRangeAxes(this.zoomInFactor, this.info.getPlotInfo(),
                translateScreenToJava2D(new Point((int) x, (int) y)));
    }
}
 

@Before
public void setUp() throws Exception
{

    Plot plot = new CategoryPlot();
    _jFreeChart = new JFreeChart(plot);

    when(_chartingDefinition.getChartTitle()).thenReturn(CHART_TITLE);
    when(_chartingDefinition.getChartSubtitle()).thenReturn(CHART_SUB_TITLE);
    when(_chartingDefinition.getXAxisTitle()).thenReturn(X_TITLE);
    when(_chartingDefinition.getYAxisTitle()).thenReturn(Y_TITLE);
    when(_chartingDefinition.getSeriesDefinitions()).thenReturn(_seriesDefinitions );
}
 

/**
 * Receives notification of changes to the chart, and redraws the chart.
 * 
 * @param event
 *            details of the chart change event.
 */

@Override
public void chartChanged(ChartChangeEvent event) {
	Plot plot = this.chart.getPlot();
	if (plot instanceof Zoomable) {
		Zoomable z = (Zoomable) plot;
		this.orientation = z.getOrientation();
	}
	repaint();
}
 

/**
 * Creates a tabbed pane for editing the plot attributes.
 * 
 * @param plot  the plot.
 * 
 * @return A tabbed pane. 
 */
@Override
protected JTabbedPane createPlotTabs(Plot plot) {
    JTabbedPane tabs = super.createPlotTabs(plot);
    // TODO find a better localization key
    tabs.insertTab(localizationResources.getString("General1"), null, 
            createPlotPanel(), null, 0);
    tabs.setSelectedIndex(0);
    return tabs;
}
 

/**
 * Reserves the space required to draw the color bar.
 *
 * @param g2  the graphics device.
 * @param plot  the plot that the axis belongs to.
 * @param plotArea  the area within which the plot should be drawn.
 * @param dataArea  the data area.
 * @param edge  the axis location.
 * @param space  the space already reserved.
 *
 * @return The space required to draw the axis in the specified plot area.
 */
public AxisSpace reserveSpace(Graphics2D g2, Plot plot,
                              Rectangle2D plotArea,
                              Rectangle2D dataArea, RectangleEdge edge,
                              AxisSpace space) {

    AxisSpace result = this.axis.reserveSpace(g2, plot, plotArea, edge,
            space);
    double thickness = calculateBarThickness(dataArea, edge);
    result.add(thickness + 2 * this.outerGap, edge);
    return result;

}
 

@Override
public void handleScroll(TaChartCanvas canvas, ScrollEvent e) {
    JFreeChart chart = canvas.getChart();
    Plot plot = chart.getPlot();
    if (plot instanceof Zoomable) {
        Zoomable zoomable = (Zoomable) plot;
        handleZoomable(canvas, zoomable, e);
    }
    else if (plot instanceof PiePlot) {
        PiePlot pp = (PiePlot) plot;
        pp.handleMouseWheelRotation((int) e.getDeltaY());
    }
}
 

/**
 * Sets the chart that is displayed in the panel.
 *
 * @param chart  the chart (<code>null</code> permitted).
 */
public void setChart(JFreeChart chart) {

    // stop listening for changes to the existing chart
    if (this.chart != null) {
        this.chart.removeChangeListener(this);
        this.chart.removeProgressListener(this);
    }

    // add the new chart
    this.chart = chart;
    if (chart != null) {
        this.chart.addChangeListener(this);
        this.chart.addProgressListener(this);
        Plot plot = chart.getPlot();
        this.domainZoomable = false;
        this.rangeZoomable = false;
        if (plot instanceof Zoomable) {
            Zoomable z = (Zoomable) plot;
            this.domainZoomable = z.isDomainZoomable();
            this.rangeZoomable = z.isRangeZoomable();
            this.orientation = z.getOrientation();
        }
    }
    else {
        this.domainZoomable = false;
        this.rangeZoomable = false;
    }
    if (this.useBuffer) {
        this.refreshBuffer = true;
    }
    repaint();

}