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Description & Source Code
This example demonstrates a sample of the S&p (Es) Market Crash May 6th 2010. High-Low data represents the price and the bar chart in the background is the total volume. candlestick_chart.zul
<vlayout apply="org.zkoss.bind.BindComposer"
viewModel="@id('vm') @init('demo.chart.candlestick.CandlestickChartVM')">
<chart id="chart" width="680" height="400"
yAxis="Price" fgAlpha="128" paneColor="#ffffff"
type="candlestick"
model="@bind(vm.model)" engine="@bind(vm.engine)"
onClick="@command('showMessage',msg=event.areaComponent.tooltiptext)"/>
<hlayout visible="@bind(not empty vm.message)">
You clicked on :<label value="@bind(vm.message)"/>
</hlayout>
</vlayout>CandlestickChartVM.java
package demo.chart.candlestick;
import java.util.Date;
import java.util.Iterator;
import org.zkoss.bind.annotation.BindingParam;
import org.zkoss.bind.annotation.Command;
import org.zkoss.bind.annotation.Init;
import org.zkoss.bind.annotation.NotifyChange;
import org.zkoss.zul.HiLoModel;
import org.zkoss.zul.SimpleHiLoModel;
public class CandlestickChartVM {
HiLoModel model;
CandlestickChartEngine engine;
String message;
@Init
public void init() {
engine = new CandlestickChartEngine();
model = new SimpleHiLoModel();
Iterator<Object[]> it = ChartData.get().iterator();
while (it.hasNext()) {
Object[] data = it.next();
model.addValue((Date) data[0], (Double) data[1], (Double) data[2],
(Double) data[3], (Double) data[4], (Double) data[5]);
}
}
public CandlestickChartEngine getEngine() {
return engine;
}
public HiLoModel getModel() {
return model;
}
public String getMessage() {
return message;
}
@Command("showMessage")
@NotifyChange("message")
public void onShowMessage(
@BindingParam("msg") String message){
this.message = message;
}
}
CandlestickChartEngine.java
package demo.chart.candlestick;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.renderer.xy.CandlestickRenderer;
import org.jfree.chart.renderer.xy.XYItemRenderer;
import org.zkoss.zkex.zul.impl.JFreeChartEngine;
import org.zkoss.zul.Chart;
import demo.chart.ChartColors;
/*
* you are able to do many advanced chart customization by extending ChartEngine
*/
public class CandlestickChartEngine extends JFreeChartEngine {
//This method used to define the margin of axis
protected boolean prepareJFreeChart(JFreeChart jfchart, Chart chart) {
XYPlot xyplot = (XYPlot) jfchart.getPlot();
// Define margin of y-axis
NumberAxis numberaxis = (NumberAxis) xyplot.getRangeAxis();
numberaxis.setUpperMargin(0.0D);
numberaxis.setLowerMargin(0.0D);
// Second axis shows volume
NumberAxis rangeAxis2 = new NumberAxis("TotalVolume");
rangeAxis2.setUpperMargin(78410);
numberaxis.setAutoRangeIncludesZero(false);
xyplot.setRangeAxis( 1, rangeAxis2 );
CandlestickRenderer renderer = (CandlestickRenderer)xyplot.getRenderer();
renderer.setSeriesPaint(0, ChartColors.COLOR_1);
renderer.setDownPaint(ChartColors.COLOR_5);
renderer.setUpPaint(ChartColors.COLOR_2);
return false;
}
}
ChartData.java
package demo.chart.candlestick;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.TimeZone;
public class ChartData {
static List<Object[]> data = new ArrayList<Object[]>();
static {
data.add(new Object[] { time(2010, 5, 6, 13, 57, 0),
new Double(1116.50), new Double(1119.50), new Double(1115.75),
new Double(1118.75), new Double(26534) });
data.add(new Object[] { time(2010, 5, 6, 13, 58, 0),
new Double(1118.75), new Double(1118.75), new Double(1113.75),
new Double(1115.50), new Double(22715) });
data.add(new Object[] { time(2010, 5, 6, 13, 59, 0),
new Double(1115.75), new Double(1116.00), new Double(1110.75),
new Double(1112.75), new Double(20766) });
data.add(new Object[] { time(2010, 5, 6, 14, 0, 0),
new Double(1112.75), new Double(1112.75), new Double(1103.25),
new Double(1106.00), new Double(30059) });
data.add(new Object[] { time(2010, 5, 6, 14, 1, 0),
new Double(1105.75), new Double(1115.25), new Double(1105.50),
new Double(1113.00), new Double(20329) });
data.add(new Object[] { time(2010, 5, 6, 14, 2, 0),
new Double(1112.75), new Double(1116.50), new Double(1110.50),
new Double(1116.25), new Double(20395) });
data.add(new Object[] { time(2010, 5, 6, 14, 3, 0),
new Double(1116.50), new Double(1121.00), new Double(1115.75),
new Double(1120.00), new Double(23156) });
data.add(new Object[] { time(2010, 5, 6, 14, 4, 0),
new Double(1120.00), new Double(1121.25), new Double(1117.75),
new Double(1119.00), new Double(22293) });
data.add(new Object[] { time(2010, 5, 6, 14, 5, 0),
new Double(1119.00), new Double(1123.50), new Double(1116.75),
new Double(1123.50), new Double(27369) });
data.add(new Object[] { time(2010, 5, 6, 14, 6, 0),
new Double(1123.50), new Double(1124.00), new Double(1120.25),
new Double(1121.75), new Double(22120) });
data.add(new Object[] { time(2010, 5, 6, 14, 7, 0),
new Double(1121.75), new Double(1126.50), new Double(1121.00),
new Double(1126.00), new Double(24415) });
data.add(new Object[] { time(2010, 5, 6, 14, 8, 0),
new Double(1126.25), new Double(1131.25), new Double(1125.50),
new Double(1131.25), new Double(27627) });
data.add(new Object[] { time(2010, 5, 6, 14, 9, 0),
new Double(1131.00), new Double(1131.75), new Double(1125.00),
new Double(1126.25), new Double(28348) });
data.add(new Object[] { time(2010, 5, 6, 14, 10, 0),
new Double(1126.50), new Double(1128.00), new Double(1125.75),
new Double(1127.75), new Double(18702) });
data.add(new Object[] { time(2010, 5, 6, 14, 11, 0),
new Double(1128.00), new Double(1128.00), new Double(1117.50),
new Double(1118.25), new Double(25499) });
data.add(new Object[] { time(2010, 5, 6, 14, 12, 0),
new Double(1118.25), new Double(1122.25), new Double(1117.75),
new Double(1120.25), new Double(16323) });
data.add(new Object[] { time(2010, 5, 6, 14, 13, 0),
new Double(1120.25), new Double(1122.50), new Double(1119.00),
new Double(1121.25), new Double(11372) });
data.add(new Object[] { time(2010, 5, 6, 14, 14, 0),
new Double(1121.25), new Double(1121.75), new Double(1119.25),
new Double(1119.75), new Double(8121) });
data.add(new Object[] { time(2010, 5, 6, 14, 15, 0),
new Double(1119.75), new Double(1121.25), new Double(1118.00),
new Double(1120.25), new Double(15347) });
data.add(new Object[] { time(2010, 5, 6, 14, 16, 0),
new Double(1120.25), new Double(1122.75), new Double(1120.25),
new Double(1122.00), new Double(12236) });
data.add(new Object[] { time(2010, 5, 6, 14, 17, 0),
new Double(1121.75), new Double(1125.50), new Double(1121.00),
new Double(1125.00), new Double(12052) });
data.add(new Object[] { time(2010, 5, 6, 14, 18, 0),
new Double(1125.00), new Double(1125.75), new Double(1118.50),
new Double(1118.75), new Double(21474) });
data.add(new Object[] { time(2010, 5, 6, 14, 19, 0),
new Double(1119.00), new Double(1119.00), new Double(1115.25),
new Double(1115.75), new Double(20824) });
data.add(new Object[] { time(2010, 5, 6, 14, 20, 0),
new Double(1115.75), new Double(1116.00), new Double(1111.75),
new Double(1112.25), new Double(20310) });
data.add(new Object[] { time(2010, 5, 6, 14, 21, 0),
new Double(1112.00), new Double(1113.50), new Double(1108.00),
new Double(1113.25), new Double(23136) });
data.add(new Object[] { time(2010, 5, 6, 14, 22, 0),
new Double(1113.25), new Double(1116.75), new Double(1112.50),
new Double(1114.50), new Double(13819) });
data.add(new Object[] { time(2010, 5, 6, 14, 23, 0),
new Double(1114.75), new Double(1115.50), new Double(1111.50),
new Double(1112.50), new Double(14484) });
data.add(new Object[] { time(2010, 5, 6, 14, 24, 0),
new Double(1112.50), new Double(1113.50), new Double(1111.75),
new Double(1112.25), new Double(7490) });
data.add(new Object[] { time(2010, 5, 6, 14, 25, 0),
new Double(1112.25), new Double(1112.25), new Double(1108.25),
new Double(1108.50), new Double(14881) });
data.add(new Object[] { time(2010, 5, 6, 14, 26, 0),
new Double(1108.25), new Double(1112.00), new Double(1106.50),
new Double(1107.25), new Double(19247) });
data.add(new Object[] { time(2010, 5, 6, 14, 27, 0),
new Double(1107.25), new Double(1111.25), new Double(1106.50),
new Double(1110.00), new Double(11622) });
data.add(new Object[] { time(2010, 5, 6, 14, 28, 0),
new Double(1110.00), new Double(1111.00), new Double(1109.00),
new Double(1110.50), new Double(8758) });
data.add(new Object[] { time(2010, 5, 6, 14, 29, 0),
new Double(1110.50), new Double(1118.00), new Double(1110.00),
new Double(1117.50), new Double(16857) });
data.add(new Object[] { time(2010, 5, 6, 14, 30, 0),
new Double(1117.75), new Double(1122.00), new Double(1116.50),
new Double(1121.50), new Double(17153) });
}
public static List<Object[]> get(){
return data;
}
private static Date time(int year, int month, int day, int hour,
int minute, int second) {
final java.util.Calendar calendar = java.util.Calendar
.getInstance(TimeZone.getTimeZone("GMT"));
calendar.set(year, month - 1, day, hour, minute, second);
final Date result = calendar.getTime();
return result;
}
}
ChartColors.java
package demo.chart;
import java.awt.Color;
import org.apache.commons.lang.StringUtils;
public class ChartColors {
//main colors
public static Color COLOR_1 = new Color(0x3E454C);
public static Color COLOR_2 = new Color(0x2185C5);
public static Color COLOR_3 = new Color(0x7ECEFD);
public static Color COLOR_4 = new Color(0xFFF6E5);
public static Color COLOR_5 = new Color(0xFF7F66);
//additional colors
public static Color COLOR_6 = new Color(0x98D9FF);
public static Color COLOR_7 = new Color(0x4689B1);
public static Color COLOR_8 = new Color(0xB17C35);
public static Color COLOR_9 = new Color(0xFDC77E);
public static String toHtmlColor(Color color) {
return "#" + toHexColor(color);
}
public static String toHexColor(Color color) {
return StringUtils.leftPad(Integer.toHexString(color.getRGB() & 0xFFFFFF), 6, '0');
}
}
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