Java tutorial
/* ------------------- * SelectionDemo6.java * ------------------- * (C) Copyright 2013, by Object Refinery Limited. * */ package org.jfree.chart.demo.selection; import java.awt.BorderLayout; import java.awt.Color; import java.awt.event.InputEvent; 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.labels.StandardPieSectionLabelGenerator; import org.jfree.chart.panel.AbstractMouseHandler; import org.jfree.chart.panel.selectionhandler.EntitySelectionManager; import org.jfree.chart.panel.selectionhandler.FreeRegionSelectionHandler; import org.jfree.chart.panel.selectionhandler.MouseClickSelectionHandler; import org.jfree.chart.panel.selectionhandler.RegionSelectionHandler; import org.jfree.chart.plot.PiePlot; 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.PieCursor; import org.jfree.data.extension.impl.PieDatasetSelectionExtension; import org.jfree.data.general.Dataset; import org.jfree.data.general.DefaultPieDataset; import org.jfree.data.general.PieDataset; import org.jfree.data.general.SelectionChangeEvent; import org.jfree.data.general.SelectionChangeListener; /* * based on PieChartDemo2 */ public class SelectionDemo6Pie extends ApplicationFrame implements SelectionChangeListener<PieCursor<String>> { private JTable table; private DefaultTableModel model; private PieDataset dataset; public SelectionDemo6Pie(String title) { super(title); JPanel chartPanel = createDemoPanel(); chartPanel.setPreferredSize(new java.awt.Dimension(700, 500)); JSplitPane split = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT); split.add(chartPanel); this.model = new DefaultTableModel(new String[] { "section", "value:" }, 0); this.table = new JTable(this.model); TableColumnModel tcm = this.table.getColumnModel(); 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); } private static PieDataset createDataset() { DefaultPieDataset dataset = new DefaultPieDataset(); dataset.setValue("One", 43.2); dataset.setValue("Two", 10.0); dataset.setValue("Three", 27.5); dataset.setValue("Four", 17.5); dataset.setValue("Five", 11.0); dataset.setValue("Six", 19.4); return dataset; } private static JFreeChart createChart(final PieDataset dataset, DatasetSelectionExtension<PieCursor<String>> ext) { JFreeChart chart = ChartFactory.createPieChart("Pie Chart Demo 2", dataset); final PiePlot plot = (PiePlot) chart.getPlot(); plot.setSectionPaint("One", new Color(160, 160, 255)); plot.setSectionPaint("Two", new Color(128, 128, 255 - 32)); plot.setSectionPaint("Three", new Color(96, 96, 255 - 64)); plot.setSectionPaint("Four", new Color(64, 64, 255 - 96)); plot.setSectionPaint("Five", new Color(32, 32, 255 - 128)); plot.setSectionPaint("Six", new Color(0, 0, 255 - 144)); plot.setNoDataMessage("No data available"); plot.setLabelGenerator(new StandardPieSectionLabelGenerator("{0} ({2} percent)")); plot.setLabelBackgroundPaint(new Color(220, 220, 220)); plot.setLegendLabelToolTipGenerator(new StandardPieSectionLabelGenerator("Tooltip for legend item {0}")); plot.setSimpleLabels(true); plot.setInteriorGap(0.1); //pie plots done use abstract renderers need to react to selection on our own final PieCursor<String> cursor = new PieCursor<String>(); ext.addChangeListener(new SelectionChangeListener<PieCursor<String>>() { public void selectionChanged(SelectionChangeEvent<PieCursor<String>> event) { for (int i = 0; i < dataset.getItemCount(); i++) { cursor.setPosition((String) dataset.getKey(i)); if (event.getSelectionExtension().isSelected(cursor)) { plot.setExplodePercent(cursor.key, 0.15); } else { plot.setExplodePercent(cursor.key, 0.0); } } } }); return chart; } public final JPanel createDemoPanel() { this.dataset = createDataset(); //extend dataset and add selection change listener for the demo DatasetSelectionExtension<PieCursor<String>> datasetExtension = new PieDatasetSelectionExtension<String>( this.dataset); datasetExtension.addChangeListener(this); //standard setup JFreeChart chart = createChart(this.dataset, datasetExtension); ChartPanel panel = new ChartPanel(chart); panel.setMouseWheelEnabled(true); //add a selection handler with shift modifier for clicking RegionSelectionHandler selectionHandler = new FreeRegionSelectionHandler(); AbstractMouseHandler clickHandler = new MouseClickSelectionHandler(InputEvent.SHIFT_MASK); panel.addMouseHandler(selectionHandler); panel.addMouseHandler(clickHandler); 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; } public void selectionChanged(SelectionChangeEvent<PieCursor<String>> event) { while (this.model.getRowCount() > 0) { this.model.removeRow(0); } PieDatasetSelectionExtension<String> ext = (PieDatasetSelectionExtension<String>) event .getSelectionExtension(); DatasetIterator<PieCursor<String>> iter = ext.getSelectionIterator(true); while (iter.hasNext()) { PieCursor<String> dc = iter.next(); this.model.addRow(new Object[] { dc.key, this.dataset.getValue(dc.key) }); } } public static void main(String[] args) { SelectionDemo6Pie demo = new SelectionDemo6Pie("JFreeChart: SelectionDemo6Pie.java"); demo.pack(); WindowUtils.centerFrameOnScreen(demo); demo.setVisible(true); } }