diff --git a/xchart-demo/src/main/java/com/xeiam/xchart/standalone/RealtimeAttempt.java b/xchart-demo/src/main/java/com/xeiam/xchart/standalone/RealtimeAttempt.java new file mode 100644 index 0000000000000000000000000000000000000000..cfdae014aa4bed02d46d8bea003b21d4caf82c93 --- /dev/null +++ b/xchart-demo/src/main/java/com/xeiam/xchart/standalone/RealtimeAttempt.java @@ -0,0 +1,135 @@ +/* + * Copyright 2013 Xeiam, LLC. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package com.xeiam.xchart.standalone; + +import com.xeiam.xchart.Chart; +import com.xeiam.xchart.Series; +import com.xeiam.xchart.SeriesMarker; +import com.xeiam.xchart.XChartPanel; +import java.util.ArrayList; +import java.util.Collection; +import java.util.Timer; +import java.util.TimerTask; +import javax.swing.JFrame; +import javax.swing.JPanel; + +/** + * + * @author rossjourdain + */ +public class RealtimeAttempt { + + private Chart chart; + private JPanel chartPanel; + + public static void main(String[] args) throws Exception { + + // Setup the panel + final RealtimeAttempt realtimeAttempt = new RealtimeAttempt(); + realtimeAttempt.buildPanel(); + + // Schedule a job for the event-dispatching thread: + // creating and showing this application's GUI. + javax.swing.SwingUtilities.invokeLater(new Runnable() { + @Override + public void run() { + + // Create and set up the window. + JFrame frame = new JFrame("XChart"); + frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); + frame.add(realtimeAttempt.getChartPanel()); + + // Display the window. + frame.pack(); + frame.setVisible(true); + } + }); + + // Simulate a data feed + TimerTask chartUpdaterTask = new TimerTask() { + @Override + public void run() { + realtimeAttempt.updateData(); + } + }; + + Timer timer = new Timer(); + timer.scheduleAtFixedRate(chartUpdaterTask, 0, 1000); + + } + + public void buildPanel() { + Collection<Number> yData = getRandomData(5); + + // Create Chart + chart = new Chart(500, 400); + chart.setChartTitle("Sample Chart"); + chart.setXAxisTitle("X"); + chart.setYAxisTitle("Y"); + Series series = chart.addSeries("y(x)", null, yData); + series.setMarker(SeriesMarker.CIRCLE); + + chartPanel = new XChartPanel(chart); + } + + public void updateData() { + // Get some new data + Collection<Number> newData = getRandomData(1); + + + // Replace the existing + ArrayList<Number> replacementData = new ArrayList<Number>(); + + Series oldSeries = (Series) chart.getSeriesMap().values().toArray()[0]; + Collection<Number> oldData = oldSeries.getyData(); + replacementData.addAll(oldData); + + replacementData.addAll(newData); + + // Limit the total number of points + while (replacementData.size() > 20) { + replacementData.remove(0); + } + + // Swap out the data + chart.getSeriesMap().clear(); + Series newSeries = chart.addSeries(oldSeries.getName(), null, replacementData); + newSeries.setLineColor(oldSeries.getStrokeColor()); + newSeries.setLineStyle(oldSeries.getStroke()); + newSeries.setMarkerColor(oldSeries.getMarkerColor()); + //etc + + // Re-display the chart + chartPanel.revalidate(); + chartPanel.repaint(); + } + + public Chart getChart() { + return chart; + } + + public JPanel getChartPanel() { + return chartPanel; + } + + private static Collection<Number> getRandomData(int numPoints) { + ArrayList<Number> data = new ArrayList<Number>(); + for (int i = 0; i < numPoints; i++) { + data.add(Math.random() * 100); + } + return data; + } +}