📄 crosshairdemo2.java
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/* ======================================
* JFreeChart : a free Java chart library
* ======================================
*
* Project Info: http://www.jfree.org/jfreechart/index.html
* Project Lead: David Gilbert (david.gilbert@object-refinery.com);
*
* (C) Copyright 2000-2003, by Object Refinery Limited and Contributors.
*
* This library is free software; you can redistribute it and/or modify it under the terms
* of the GNU Lesser General Public License as published by the Free Software Foundation;
* either version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307, USA.
*
* -------------------
* CrosshairDemo2.java
* -------------------
* (C) Copyright 2003 by Object Refinery Limited and Contributors.
*
* Original Author: David Gilbert (for Object Refinery Limited);
* Contributor(s): -;
*
* $Id: CrosshairDemo1.java,v 1.2 2003/08/01 09:43:14 mungady Exp $
*
* Changes
* -------
* 07-Aug-2002 : Version 1 (DG);
*
*/
package org.jfree.chart.demo;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.text.SimpleDateFormat;
import java.util.Date;
import javax.swing.BorderFactory;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.border.Border;
import javax.swing.table.AbstractTableModel;
import javax.swing.table.TableCellRenderer;
import javax.swing.table.TableModel;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.Spacer;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.event.ChartChangeEvent;
import org.jfree.chart.event.ChartChangeListener;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.renderer.DefaultXYItemRenderer;
import org.jfree.chart.renderer.StandardXYItemRenderer;
import org.jfree.data.XYDataset;
import org.jfree.data.time.Minute;
import org.jfree.data.time.RegularTimePeriod;
import org.jfree.data.time.TimeSeries;
import org.jfree.data.time.TimeSeriesCollection;
import org.jfree.data.time.TimeSeriesDataItem;
import org.jfree.ui.ApplicationFrame;
import org.jfree.ui.DateCellRenderer;
import org.jfree.ui.NumberCellRenderer;
import org.jfree.ui.RefineryUtilities;
/**
* An example of....
*
* @author David Gilbert
*/
public class CrosshairDemo2 extends ApplicationFrame implements ChartChangeListener {
private static final int SERIES_COUNT = 4;
private TimeSeriesCollection[] datasets;
private TimeSeries[] series;
private ChartPanel chartPanel;
private DemoTableModel model;
/**
* A demonstration application showing how to...
*
* @param title the frame title.
*/
public CrosshairDemo2(String title) {
super(title);
this.datasets = new TimeSeriesCollection[SERIES_COUNT];
this.series = new TimeSeries[SERIES_COUNT];
JPanel content = new JPanel(new BorderLayout());
JFreeChart chart = createChart();
this.chartPanel = new ChartPanel(chart);
this.chartPanel.setPreferredSize(new java.awt.Dimension(600, 270));
this.chartPanel.setHorizontalZoom(true);
this.chartPanel.setVerticalZoom(true);
Border border = BorderFactory.createCompoundBorder(
BorderFactory.createEmptyBorder(4, 4, 4, 4),
BorderFactory.createEtchedBorder()
);
this.chartPanel.setBorder(border);
content.add(this.chartPanel);
JPanel dashboard = new JPanel(new BorderLayout());
dashboard.setPreferredSize(new Dimension(400, 120));
dashboard.setBorder(BorderFactory.createEmptyBorder(0, 4, 4, 4));
this.model = new DemoTableModel(SERIES_COUNT);
for (int row = 0; row < SERIES_COUNT; row++) {
if (row == 0) {
this.model.setValueAt(chart.getXYPlot().getDataset().getSeriesName(0), row, 0);
}
else {
this.model.setValueAt(chart.getXYPlot().getSecondaryDataset(row - 1).getSeriesName(0), row, 0);
}
this.model.setValueAt(new Double("0.00"), row, 1);
this.model.setValueAt(new Double("0.00"), row, 2);
this.model.setValueAt(new Double("0.00"), row, 3);
this.model.setValueAt(new Double("0.00"), row, 4);
this.model.setValueAt(new Double("0.00"), row, 5);
this.model.setValueAt(new Double("0.00"), row, 6);
}
JTable table = new JTable(this.model);
TableCellRenderer renderer1 = new DateCellRenderer(new SimpleDateFormat("HH:mm:ss"));
TableCellRenderer renderer2 = new NumberCellRenderer();
table.getColumnModel().getColumn(1).setCellRenderer(renderer1);
table.getColumnModel().getColumn(2).setCellRenderer(renderer2);
table.getColumnModel().getColumn(3).setCellRenderer(renderer1);
table.getColumnModel().getColumn(4).setCellRenderer(renderer2);
table.getColumnModel().getColumn(5).setCellRenderer(renderer1);
table.getColumnModel().getColumn(6).setCellRenderer(renderer2);
dashboard.add(new JScrollPane(table));
content.add(dashboard, BorderLayout.SOUTH);
setContentPane(content);
}
/**
* Creates the demo chart.
*
* @return The chart.
*/
private JFreeChart createChart() {
JFreeChart chart = ChartFactory.createTimeSeriesChart(
"Crosshair Demo 2",
"Time of Day",
"Value",
null,
true,
true,
false
);
XYDataset[] datasets = new XYDataset[SERIES_COUNT];
for (int i = 0; i < SERIES_COUNT; i++) {
datasets[i] = createDataset(i, "Series " + i, 100.0 + i * 200.0, new Minute(), 200);
if (i == 0) {
chart.getXYPlot().setDataset(datasets[i]);
}
else {
XYPlot plot = chart.getXYPlot();
plot.setSecondaryDataset(i - 1, datasets[i]);
plot.setSecondaryRangeAxis(i - 1, new NumberAxis("Axis " + (i + 1)));
plot.mapSecondaryDatasetToRangeAxis(i - 1, new Integer(i - 1));
plot.setSecondaryRenderer(i - 1, new DefaultXYItemRenderer());
}
}
chart.addChangeListener(this);
chart.setBackgroundPaint(Color.white);
XYPlot plot = chart.getXYPlot();
plot.setOrientation(PlotOrientation.VERTICAL);
plot.setBackgroundPaint(Color.lightGray);
plot.setDomainGridlinePaint(Color.white);
plot.setRangeGridlinePaint(Color.white);
plot.setAxisOffset(new Spacer(Spacer.ABSOLUTE, 5.0, 5.0, 5.0, 5.0));
plot.setDomainCrosshairVisible(true);
plot.setDomainCrosshairLockedOnData(false);
plot.setRangeCrosshairVisible(false);
StandardXYItemRenderer renderer = (StandardXYItemRenderer) plot.getRenderer();
renderer.setPaint(Color.black);
return chart;
}
/**
* Creates a sample dataset.
*
* @param name the dataset name.
* @param base the starting value.
* @param start the starting period.
* @param count the number of values to generate.
*
* @return The dataset.
*/
private XYDataset createDataset(int index, String name,
double base, RegularTimePeriod start, int count) {
this.series[index] = new TimeSeries(name, start.getClass());
RegularTimePeriod period = start;
double value = base;
for (int i = 0; i < count; i++) {
this.series[index].add(period, value);
period = period.next();
value = value * (1 + (Math.random() - 0.495) / 10.0);
}
this.datasets[index] = new TimeSeriesCollection();
datasets[index].addSeries(this.series[index]);
return datasets[index];
}
public void chartChanged(ChartChangeEvent event) {
if (this.chartPanel != null) {
JFreeChart chart = this.chartPanel.getChart();
if (chart != null) {
XYPlot plot = chart.getXYPlot();
XYDataset dataset = plot.getDataset();
String seriesName = dataset.getSeriesName(0);
double xx = plot.getDomainCrosshairValue();
this.model.setValueAt(seriesName, 0, 0);
long millis = (long) xx;
for (int row = 0; row < SERIES_COUNT; row++) {
this.model.setValueAt(new Long(millis), row, 1);
int[] bounds = this.datasets[row].getSurroundingItems(0, millis);
System.out.println("Bounds: " + bounds[0] + ", " + bounds[1]);
//int itemIndex = this.series[row].getIndex(new Minute(new Date(millis)));
long prevX = 0;
long nextX = 0;
double prevY = 0.0;
double nextY = 0.0;
if (bounds[0] >= 0) {
TimeSeriesDataItem prevItem = this.series[row].getDataItem(bounds[0]);
prevX = prevItem.getPeriod().getMiddleMillisecond();
Number y = prevItem.getValue();
if (y != null) {
prevY = y.doubleValue();
this.model.setValueAt(new Double(prevY), row, 4);
}
else {
this.model.setValueAt(null, row, 4);
}
this.model.setValueAt(new Long(prevX), row, 3);
}
else {
this.model.setValueAt(new Double(0.00), row, 4);
this.model.setValueAt(new Double(this.chartPanel.getChart().getXYPlot().getDomainAxis().getRange().getLowerBound()), row, 3);
}
if (bounds[1] >= 0) {
TimeSeriesDataItem nextItem = this.series[row].getDataItem(bounds[1]);
nextX = nextItem.getPeriod().getMiddleMillisecond();
Number y = nextItem.getValue();
if (y != null) {
nextY = y.doubleValue();
this.model.setValueAt(new Double(nextY), row, 6);
}
else {
this.model.setValueAt(null, row, 6);
}
this.model.setValueAt(new Long(nextX), row, 5);
}
else {
this.model.setValueAt(new Double(0.00), row, 6);
this.model.setValueAt(new Double(this.chartPanel.getChart().getXYPlot().getDomainAxis().getRange().getUpperBound()), row, 5);
}
double interpolatedY = 0.0;
if ((nextX - prevX) > 0) {
interpolatedY = prevY + (((double)millis - (double)prevX) / ((double)nextX - (double)prevX)) * (nextY - prevY);
}
else {
interpolatedY = prevY;
}
this.model.setValueAt(new Double(interpolatedY), row, 2);
}
}
}
}
/**
* Starting point for the demonstration application.
*
* @param args ignored.
*/
public static void main(String[] args) {
CrosshairDemo2 demo = new CrosshairDemo2("Crosshair Demo 2");
demo.pack();
RefineryUtilities.centerFrameOnScreen(demo);
demo.setVisible(true);
}
class DemoTableModel extends AbstractTableModel implements TableModel {
private Object[][] data;
public DemoTableModel(int rows) {
this.data = new Object[rows][7];
}
public int getColumnCount() {
return 7;
}
public int getRowCount() {
return data.length;
}
public Object getValueAt(int row, int column) {
return this.data[row][column];
}
public void setValueAt(Object value, int row, int column) {
this.data[row][column] = value;
fireTableDataChanged();
}
public String getColumnName(int column) {
switch(column) {
case 0 : return "Series Name:";
case 1 : return "X:";
case 2 : return "Y:";
case 3 : return "X (prev)";
case 4 : return "Y (prev):";
case 5 : return "X (next):";
case 6 : return "Y (next):";
}
return null;
}
}
}
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