Java tutorial
/* ------------------- * SelectionDemo2.java * ------------------- * (C) Copyright 2009, by Object Refinery Limited. * */ package org.jfree.expdemo; import java.awt.BasicStroke; import java.awt.BorderLayout; import java.awt.Color; import java.util.Random; import javax.swing.BorderFactory; import javax.swing.JPanel; import javax.swing.JScrollPane; import javax.swing.JSplitPane; import javax.swing.JTable; import javax.swing.border.EmptyBorder; import javax.swing.border.TitledBorder; import javax.swing.table.DefaultTableModel; import javax.swing.table.TableColumnModel; import org.jfree.chart.ChartFactory; import org.jfree.chart.ChartPanel; import org.jfree.chart.JFreeChart; import org.jfree.chart.axis.NumberAxis; import org.jfree.chart.panel.selectionhandler.CircularRegionSelectionHandler; import org.jfree.chart.panel.selectionhandler.EntitySelectionManager; import org.jfree.chart.panel.selectionhandler.MouseClickSelectionHandler; import org.jfree.chart.panel.selectionhandler.RegionSelectionHandler; import org.jfree.chart.plot.PlotOrientation; import org.jfree.chart.plot.XYPlot; import org.jfree.chart.renderer.rendererextension.IRSUtilities; import org.jfree.chart.renderer.xy.XYLineAndShapeRenderer; import org.jfree.data.datasetextension.DatasetIterator; import org.jfree.data.datasetextension.DatasetSelectionExtension; import org.jfree.data.datasetextension.impl.DatasetExtensionManager; import org.jfree.data.datasetextension.impl.XYCursor; import org.jfree.data.datasetextension.impl.XYDatasetSelectionExtension; import org.jfree.data.event.SelectionChangeEvent; import org.jfree.data.event.SelectionChangeListener; import org.jfree.data.general.Dataset; import org.jfree.data.xy.XYDataset; import org.jfree.data.xy.XYSeries; import org.jfree.data.xy.XYSeriesCollection; import org.jfree.ui.ApplicationFrame; import org.jfree.ui.NumberCellRenderer; import org.jfree.ui.RefineryUtilities; /** * A demo scatter plot. */ public class SelectionDemo2 extends ApplicationFrame implements SelectionChangeListener { private JTable table; private DefaultTableModel model; private XYSeriesCollection dataset; /** * A demonstration application showing a scatter plot. * * @param title the frame title. */ public SelectionDemo2(String title) { super(title); ChartPanel chartPanel = (ChartPanel) createDemoPanel(); chartPanel.setPreferredSize(new java.awt.Dimension(500, 270)); JFreeChart chart = chartPanel.getChart(); XYPlot plot = (XYPlot) chart.getPlot(); this.dataset = (XYSeriesCollection) plot.getDataset(); JSplitPane split = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT); split.add(chartPanel); this.model = new DefaultTableModel(new String[] { "Series:", "Item:", "X:", "Y:" }, 0); this.table = new JTable(this.model); TableColumnModel tcm = this.table.getColumnModel(); tcm.getColumn(2).setCellRenderer(new NumberCellRenderer()); tcm.getColumn(3).setCellRenderer(new NumberCellRenderer()); JPanel p = new JPanel(new BorderLayout()); JScrollPane scroller = new JScrollPane(this.table); p.add(scroller); p.setBorder(BorderFactory.createCompoundBorder(new TitledBorder("Selected Items: "), new EmptyBorder(4, 4, 4, 4))); split.add(p); setContentPane(split); } /** * The selection changed, so we change the table model * * @param event */ public void selectionChanged(SelectionChangeEvent event) { while (this.model.getRowCount() > 0) { this.model.removeRow(0); } XYDatasetSelectionExtension ext = (XYDatasetSelectionExtension) event.getSelectionExtension(); DatasetIterator iter = ext.getSelectionIterator(true); while (iter.hasNext()) { XYCursor dc = (XYCursor) iter.nextCursor(); Comparable seriesKey = this.dataset.getSeriesKey(dc.series); Number x = this.dataset.getX(dc.series, dc.item); Number y = this.dataset.getX(dc.series, dc.item); this.model.addRow(new Object[] { seriesKey, new Integer(dc.item), x, y }); } } private static JFreeChart createChart(XYDataset dataset, DatasetSelectionExtension ext) { JFreeChart chart = ChartFactory.createScatterPlot("SelectionDemo2", "X", "Y", dataset, PlotOrientation.VERTICAL, true, true, false); XYPlot plot = (XYPlot) chart.getPlot(); plot.setNoDataMessage("NO DATA"); plot.setDomainPannable(true); plot.setRangePannable(true); plot.setDomainZeroBaselineVisible(true); plot.setRangeZeroBaselineVisible(true); plot.setDomainGridlineStroke(new BasicStroke(0.0f)); plot.setRangeGridlineStroke(new BasicStroke(0.0f)); plot.setDomainMinorGridlinesVisible(true); plot.setRangeMinorGridlinesVisible(true); XYLineAndShapeRenderer r = (XYLineAndShapeRenderer) plot.getRenderer(); r.setSeriesFillPaint(0, r.lookupSeriesPaint(0)); r.setSeriesFillPaint(1, r.lookupSeriesPaint(1)); r.setSeriesFillPaint(2, r.lookupSeriesPaint(2)); r.setUseFillPaint(true); NumberAxis domainAxis = (NumberAxis) plot.getDomainAxis(); domainAxis.setAutoRangeIncludesZero(false); domainAxis.setTickMarkInsideLength(2.0f); domainAxis.setTickMarkOutsideLength(2.0f); domainAxis.setMinorTickCount(2); domainAxis.setMinorTickMarksVisible(true); NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis(); rangeAxis.setTickMarkInsideLength(2.0f); rangeAxis.setTickMarkOutsideLength(2.0f); rangeAxis.setMinorTickCount(2); rangeAxis.setMinorTickMarksVisible(true); //add selection specific rendering IRSUtilities.setSelectedItemFillPaint(r, ext, Color.white); //register plot as selection change listener ext.addSelectionChangeListener(plot); return chart; } public static XYDataset createDataset() { Random rgen = new Random(); XYSeriesCollection dataset = new XYSeriesCollection(); for (int s = 0; s < 3; s++) { XYSeries series = new XYSeries("S" + s); for (int i = 0; i < 100; i++) { double x = rgen.nextGaussian() * 200; double y = rgen.nextGaussian() * 200; series.add(x, y); } dataset.addSeries(series); } return dataset; } /** * Creates a panel for the demo (used by SuperDemo.java). * * @return A panel. */ public JPanel createDemoPanel() { XYDataset dataset = createDataset(); //extend dataset and add selection change listener for the demo DatasetSelectionExtension datasetExtension = new XYDatasetSelectionExtension(dataset); datasetExtension.addSelectionChangeListener(this); //standard setup JFreeChart chart = createChart(dataset, datasetExtension); ChartPanel panel = new ChartPanel(chart); panel.setMouseWheelEnabled(true); // add a selection handler RegionSelectionHandler selectionHandler = new CircularRegionSelectionHandler(); panel.addMouseHandler(selectionHandler); panel.addMouseHandler(new MouseClickSelectionHandler()); panel.removeMouseHandler(panel.getZoomHandler()); // add a selection manager DatasetExtensionManager dExManager = new DatasetExtensionManager(); dExManager.registerDatasetExtension(datasetExtension); panel.setSelectionManager(new EntitySelectionManager(panel, new Dataset[] { dataset }, dExManager)); return panel; } /** * Starting point for the demonstration application. * * @param args ignored. */ public static void main(String[] args) { SelectionDemo2 demo = new SelectionDemo2("JFreeChart: SelectionDemo2.java"); demo.pack(); RefineryUtilities.centerFrameOnScreen(demo); demo.setVisible(true); } }