📄 crosshairdemo1.java
字号:
/* -------------------
* CrosshairDemo1.java
* -------------------
* (C) Copyright 2003-2006, by Object Refinery Limited.
*
*/
package 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.JSlider;
import javax.swing.JTable;
import javax.swing.border.Border;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
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.axis.ValueAxis;
import org.jfree.chart.event.ChartProgressEvent;
import org.jfree.chart.event.ChartProgressListener;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.renderer.xy.XYItemRenderer;
import org.jfree.data.Range;
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.data.xy.XYDataset;
import org.jfree.ui.ApplicationFrame;
import org.jfree.ui.DateCellRenderer;
import org.jfree.ui.NumberCellRenderer;
import org.jfree.ui.RectangleInsets;
import org.jfree.ui.RefineryUtilities;
/**
* An example of a crosshair being controlled by an external UI component.
*/
public class CrosshairDemo1 extends ApplicationFrame {
private static class DemoPanel extends JPanel
implements ChangeListener,
ChartProgressListener {
private TimeSeries series;
private ChartPanel chartPanel;
private DemoTableModel model;
private JFreeChart chart;
private JSlider slider;
/**
* Creates a new demo panel.
*/
public DemoPanel() {
super(new BorderLayout());
this.chart = createChart();
this.chart.addProgressListener(this);
this.chartPanel = new ChartPanel(this.chart);
this.chartPanel.setPreferredSize(new java.awt.Dimension(600, 270));
this.chartPanel.setDomainZoomable(true);
this.chartPanel.setRangeZoomable(true);
Border border = BorderFactory.createCompoundBorder(
BorderFactory.createEmptyBorder(4, 4, 4, 4),
BorderFactory.createEtchedBorder());
this.chartPanel.setBorder(border);
add(this.chartPanel);
JPanel dashboard = new JPanel(new BorderLayout());
dashboard.setPreferredSize(new Dimension(400, 60));
dashboard.setBorder(BorderFactory.createEmptyBorder(0, 4, 4, 4));
this.model = new DemoTableModel(3);
this.model.setValueAt(
this.chart.getXYPlot().getDataset().getSeriesKey(0), 0, 0);
this.model.setValueAt(new Double("0.00"), 0, 1);
this.model.setValueAt(new Double("0.00"), 0, 2);
this.model.setValueAt(new Double("0.00"), 0, 3);
this.model.setValueAt(new Double("0.00"), 0, 4);
this.model.setValueAt(new Double("0.00"), 0, 5);
this.model.setValueAt(new Double("0.00"), 0, 6);
JTable table = new JTable(this.model);
TableCellRenderer renderer1 = new DateCellRenderer(
new SimpleDateFormat("HH:mm"));
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));
this.slider = new JSlider(0, 100, 50);
this.slider.addChangeListener(this);
dashboard.add(this.slider, BorderLayout.SOUTH);
add(dashboard, BorderLayout.SOUTH);
}
/**
* Creates the demo chart.
*
* @return The chart.
*/
private JFreeChart createChart() {
XYDataset dataset1 = createDataset("Random 1", 100.0, new Minute(),
200);
JFreeChart chart1 = ChartFactory.createTimeSeriesChart(
"Crosshair Demo 1",
"Time of Day",
"Value",
dataset1,
true,
true,
false
);
chart1.setBackgroundPaint(Color.white);
XYPlot plot = chart1.getXYPlot();
plot.setOrientation(PlotOrientation.VERTICAL);
plot.setBackgroundPaint(Color.lightGray);
plot.setDomainGridlinePaint(Color.white);
plot.setRangeGridlinePaint(Color.white);
plot.setAxisOffset(new RectangleInsets(5.0, 5.0, 5.0, 5.0));
plot.setDomainCrosshairVisible(true);
plot.setDomainCrosshairLockedOnData(false);
plot.setRangeCrosshairVisible(false);
XYItemRenderer renderer = plot.getRenderer();
renderer.setPaint(Color.black);
return chart1;
}
/**
* 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(String name, double base,
RegularTimePeriod start, int count) {
this.series = new TimeSeries(name, start.getClass());
RegularTimePeriod period = start;
double value = base;
for (int i = 0; i < count; i++) {
this.series.add(period, value);
period = period.next();
value = value * (1 + (Math.random() - 0.495) / 10.0);
}
TimeSeriesCollection dataset = new TimeSeriesCollection();
dataset.addSeries(this.series);
return dataset;
}
/**
* Handles a state change event.
*
* @param event the event.
*/
public void stateChanged(ChangeEvent event) {
int value = this.slider.getValue();
XYPlot plot = this.chart.getXYPlot();
ValueAxis domainAxis = plot.getDomainAxis();
Range range = domainAxis.getRange();
double c = domainAxis.getLowerBound()
+ (value / 100.0) * range.getLength();
plot.setDomainCrosshairValue(c);
}
/**
* Handles a chart progress event.
*
* @param event the event.
*/
public void chartProgress(ChartProgressEvent event) {
if (event.getType() != ChartProgressEvent.DRAWING_FINISHED) {
return;
}
if (this.chartPanel != null) {
JFreeChart c = this.chartPanel.getChart();
if (c != null) {
XYPlot plot = c.getXYPlot();
XYDataset dataset = plot.getDataset();
Comparable seriesKey = dataset.getSeriesKey(0);
double xx = plot.getDomainCrosshairValue();
// update the table...
this.model.setValueAt(seriesKey, 0, 0);
long millis = (long) xx;
this.model.setValueAt(new Long(millis), 0, 1);
int itemIndex = this.series.getIndex(new Minute(
new Date(millis)));
if (itemIndex >= 0) {
TimeSeriesDataItem item = this.series.getDataItem(
Math.min(199, Math.max(0, itemIndex)));
TimeSeriesDataItem prevItem = this.series.getDataItem(
Math.max(0, itemIndex - 1));
TimeSeriesDataItem nextItem = this.series.getDataItem(
Math.min(199, itemIndex + 1));
long x = item.getPeriod().getMiddleMillisecond();
double y = item.getValue().doubleValue();
long prevX
= prevItem.getPeriod().getMiddleMillisecond();
double prevY = prevItem.getValue().doubleValue();
long nextX
= nextItem.getPeriod().getMiddleMillisecond();
double nextY = nextItem.getValue().doubleValue();
this.model.setValueAt(new Long(x), 0, 1);
this.model.setValueAt(new Double(y), 0, 2);
this.model.setValueAt(new Long(prevX), 0, 3);
this.model.setValueAt(new Double(prevY), 0, 4);
this.model.setValueAt(new Long(nextX), 0, 5);
this.model.setValueAt(new Double(nextY), 0, 6);
}
}
}
}
}
/**
* A demonstration application showing how to control a crosshair using an
* external UI component.
*
* @param title the frame title.
*/
public CrosshairDemo1(String title) {
super(title);
setContentPane(new DemoPanel());
}
/**
* Creates a panel for the demo (used by SuperDemo.java).
*
* @return A panel.
*/
public static JPanel createDemoPanel() {
return new DemoPanel();
}
/**
* Starting point for the demonstration application.
*
* @param args ignored.
*/
public static void main(String[] args) {
CrosshairDemo1 demo = new CrosshairDemo1("Crosshair Demo 1");
demo.pack();
RefineryUtilities.centerFrameOnScreen(demo);
demo.setVisible(true);
}
/**
* A demo table model.
*/
static class DemoTableModel extends AbstractTableModel
implements TableModel {
private Object[][] data;
/**
* Creates a new demo table model.
*
* @param rows the row count.
*/
public DemoTableModel(int rows) {
this.data = new Object[rows][7];
}
/**
* Returns the number of columns.
*
* @return 7.
*/
public int getColumnCount() {
return 7;
}
/**
* Returns the row count.
*
* @return 1.
*/
public int getRowCount() {
return 1;
}
/**
* Returns the value at the specified cell in the table.
*
* @param row the row index.
* @param column the column index.
*
* @return The value.
*/
public Object getValueAt(int row, int column) {
return this.data[row][column];
}
/**
* Sets the value at the specified cell.
*
* @param value the value.
* @param row the row index.
* @param column the column index.
*/
public void setValueAt(Object value, int row, int column) {
this.data[row][column] = value;
fireTableDataChanged();
}
/**
* Returns the column name.
*
* @param column the column index.
*
* @return The column name.
*/
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;
}
}
}
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -