THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
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public final class TimeSeriesChartExamplePage extends WebPage
{
public TimeSeriesChartExamplePage()
{
super();
add(createChartImage());
}
private Image createChartImage()
{
return new JFreeChartImageWithToolTip("chart", getChartModel(), "tooltip", 800, 400);
}
private IModel<JFreeChart> getChartModel()
{
return new LoadableDetachableModel<JFreeChart>()
{
@Override
protected JFreeChart load()
{
return createTimeSeriesChart();
}
};
}
private JFreeChart createTimeSeriesChart()
{
//create a chart based on a dummy time series dataset
TimeSeries timeSeries = new TimeSeries("Page hits", Month.class);
for (int i = 1; i <= 10; i++) {
timeSeries.add(new Month(i, 2010), (i * 1000));
}
TimeSeriesCollection dataSet = new TimeSeriesCollection(timeSeries);
JFreeChart chart = ChartFactory.createTimeSeriesChart("Page hits in a month", "Months",
"Page hits", dataSet, false, true, false);
//set some chart attributes
return applyChartAttributes(chart);
}
private JFreeChart applyChartAttributes(JFreeChart chart)
{
XYPlot plot = (XYPlot) chart.getPlot();
plot.setDomainCrosshairVisible(true);
plot.setRangeCrosshairVisible(true);
XYItemRenderer r = plot.getRenderer();
if (r instanceof XYLineAndShapeRenderer) {
XYLineAndShapeRenderer renderer = (XYLineAndShapeRenderer) r;
renderer.setBaseShapesVisible(true);
renderer.setBaseShapesFilled(true);
renderer.setSeriesPaint(0, Color.BLUE);
}
return chart;
}
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JFreeChartImageWithToolTip.java
NOTE: This class was taken from the http://markmail.org/message/r36cvdt2o3c4pki6#query:wicket%20jfreechart%20tooltips+page:1+mid:xqpnjdsj2lnkoinq+state:results mailing list archive with minor changes to make use of wicket models.
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public class JFreeChartImageWithToolTip extends NonCachingImage { private static final Logger logger = LoggerFactory.getLogger(JFreeChartImageWithToolTip.class); private String imageMapId; private int width; private int height; private ChartRenderingInfo chartRenderingInfo = new ChartRenderingInfo(new StandardEntityCollection()); public JFreeChartImageWithToolTip(String id, IModel<JFreeChart> model, String imageMapId, int width, int height) { super(id, model); this.imageMapId = imageMapId; this.width = width; this.height = height; } @Override protected Resource getImageResource() { Resource imageResource = null; final JFreeChart chart = (JFreeChart) getDefaultModelObject(); imageResource = new DynamicImageResource() { @Override protected byte[] getImageData() { ByteArrayOutputStream stream = new ByteArrayOutputStream(); try { if (chart != null) { chartRenderingInfo.clear(); ChartUtilities.writeChartAsPNG(stream, chart, width, height, chartRenderingInfo); } } catch (IOException ex) { logger.error("Error occured while creating chart", ex); } return stream.toByteArray(); } }; return imageResource; } @Override protected void onComponentTagBody(MarkupStream markupStream, ComponentTag openTag) { JFreeChart chart = (JFreeChart) getDefaultModelObject(); if (chart == null) { return; } ByteArrayOutputStream stream = new ByteArrayOutputStream(); try { if (chart != null) { chartRenderingInfo.clear(); ChartUtilities.writeChartAsPNG(stream, chart, width, height, chartRenderingInfo); } } catch (IOException ex) { logger.error("Error occured while creating chart", ex); } replaceComponentTagBody(markupStream, openTag, ChartUtilities.getImageMap(imageMapId, chartRenderingInfo)); } |
Result