Java tutorial
/* ------------------- * SelectionDemo4.java * ------------------- * (C) Copyright 2004-2014, by Object Refinery Limited. * */ package org.jfree.chart.demo.selection; 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 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.EntitySelectionManager; import org.jfree.chart.panel.selectionhandler.FreePathSelectionHandler; import org.jfree.chart.panel.selectionhandler.MouseClickSelectionHandler; import org.jfree.chart.panel.selectionhandler.RegionSelectionHandler; import org.jfree.chart.plot.XYPlot; import org.jfree.chart.renderer.item.IRSUtilities; import org.jfree.chart.renderer.xy.StandardXYBarPainter; import org.jfree.chart.renderer.xy.XYBarRenderer; import org.jfree.chart.demo.ApplicationFrame; import org.jfree.chart.ui.WindowUtils; import org.jfree.data.extension.DatasetIterator; import org.jfree.data.extension.DatasetSelectionExtension; import org.jfree.data.extension.impl.DatasetExtensionManager; import org.jfree.data.extension.impl.XYCursor; import org.jfree.data.extension.impl.XYDatasetSelectionExtension; import org.jfree.data.general.Dataset; import org.jfree.data.general.SelectionChangeEvent; import org.jfree.data.general.SelectionChangeListener; import org.jfree.data.statistics.HistogramBin; import org.jfree.data.statistics.HistogramDataset; import org.jfree.data.xy.IntervalXYDataset; /** * A demo of the {@link HistogramDataset} class. */ public class SelectionDemo4 extends ApplicationFrame implements SelectionChangeListener<XYCursor> { private HistogramDataset dataset; private DefaultTableModel model; private JTable table; /** * Creates a new demo. * * @param title the frame title. */ public SelectionDemo4(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 = (HistogramDataset) plot.getDataset(); JSplitPane split = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT); split.add(chartPanel); this.model = new DefaultTableModel(new String[] { "Item:", "Bin Start:", "Bin End:", "Value:" }, 0); this.table = new JTable(this.model); 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 the event. */ @Override public void selectionChanged(SelectionChangeEvent<XYCursor> event) { while (this.model.getRowCount() > 0) { this.model.removeRow(0); } XYDatasetSelectionExtension ext = (XYDatasetSelectionExtension) event.getSelectionExtension(); DatasetIterator<XYCursor> iter = ext.getSelectionIterator(true); while (iter.hasNext()) { XYCursor dc = iter.next(); this.model.addRow(new Object[] { new Integer(dc.item), this.dataset.getStartX(dc.series, dc.item), this.dataset.getEndX(dc.series, dc.item), this.dataset.getY(dc.series, dc.item) }); } } /** * Creates a sample {@link HistogramDataset}. * * @return the dataset. */ private static IntervalXYDataset createDataset() { HistogramDataset dataset = new HistogramDataset("H1"); double lower = 0.0; for (int i = 0; i < 100; i++) { double upper = (i + 1) / 10.0; HistogramBin bin = new HistogramBin(lower, upper, true, false); dataset.addBin(bin); lower = upper; } double[] values = new double[1000]; Random generator = new Random(12345678L); for (int i = 0; i < 1000; i++) { values[i] = generator.nextGaussian() + 5; } dataset.addObservations(values); return dataset; } /** * Creates a chart. * * @param dataset a dataset. * * @return The chart. */ private static JFreeChart createChart(IntervalXYDataset dataset, DatasetSelectionExtension<XYCursor> ext) { JFreeChart chart = ChartFactory.createHistogram("SelectionDemo4", null, null, dataset); XYPlot plot = (XYPlot) chart.getPlot(); plot.setDomainPannable(true); plot.setRangePannable(true); plot.setForegroundAlpha(0.85f); NumberAxis yAxis = (NumberAxis) plot.getRangeAxis(); yAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits()); XYBarRenderer renderer = (XYBarRenderer) plot.getRenderer(); renderer.setDrawBarOutline(true); renderer.setDefaultOutlinePaint(Color.red); renderer.setBarPainter(new StandardXYBarPainter()); renderer.setShadowVisible(false); //add selection specific rendering IRSUtilities.setSelectedItemPaint(renderer, ext, Color.white); //register plot as selection change listener ext.addChangeListener(plot); return chart; } /** * Creates a panel for the demo (used by SuperDemo.java). * * @return A panel. */ public final JPanel createDemoPanel() { IntervalXYDataset xydataset = createDataset(); //extend dataset and add selection change listener for the demo DatasetSelectionExtension<XYCursor> datasetExtension = new XYDatasetSelectionExtension(xydataset); datasetExtension.addChangeListener(this); //standard setup JFreeChart chart = createChart(xydataset, datasetExtension); ChartPanel panel = new ChartPanel(chart); panel.setMouseWheelEnabled(true); // add a selection handler RegionSelectionHandler selectionHandler = new FreePathSelectionHandler(); panel.addMouseHandler(selectionHandler); panel.addMouseHandler(new MouseClickSelectionHandler()); panel.removeMouseHandler(panel.getZoomHandler()); // add a selection manager with intersection selection DatasetExtensionManager dExManager = new DatasetExtensionManager(); dExManager.registerDatasetExtension(datasetExtension); EntitySelectionManager selectionManager = new EntitySelectionManager(panel, new Dataset[] { xydataset }, dExManager); selectionManager.setIntersectionSelection(true); panel.setSelectionManager(selectionManager); return panel; } /** * The starting point for the demo. * * @param args ignored. */ public static void main(String[] args) { SelectionDemo4 demo = new SelectionDemo4("JFreeChart: SelectionDemo4.java"); demo.pack(); WindowUtils.centerFrameOnScreen(demo); demo.setVisible(true); } }