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/*
* Copyright (c) 2008, 2015, Oracle and/or its affiliates.
* All rights reserved. Use is subject to license terms.
*
* This file is available and licensed under the following license:
*
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* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the distribution.
* - Neither the name of Oracle Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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package ensemble.samples.charts.line.stock;
import javafx.animation.Animation;
import javafx.animation.KeyFrame;
import javafx.animation.Timeline;
import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.scene.chart.LineChart;
import javafx.scene.chart.NumberAxis;
import javafx.scene.chart.XYChart;
import javafx.stage.Stage;
import javafx.util.Duration;
/**
* A simulated stock line chart.
*
* @sampleName Stock Line Chart
* @preview preview.png
* @see javafx.scene.chart.LineChart
* @see javafx.scene.chart.NumberAxis
* @docUrl https://docs.oracle.com/javafx/2/charts/jfxpub-charts.htm Using JavaFX Charts Tutorial
*/
public class StockLineChartApp extends Application {
private LineChart chart;
private XYChart.Series hourDataSeries;
private XYChart.Series minuteDataSeries;
private NumberAxis xAxis;
private Timeline animation;
private double hours = 0;
private double minutes = 0;
private double timeInHours = 0;
private double prevY = 10;
private double y = 10;
public StockLineChartApp() {
// create timeline to add new data every 60th of second
animation = new Timeline();
animation.getKeyFrames()
.add(new KeyFrame(Duration.millis(1000 / 60), (ActionEvent actionEvent) -> {
// 6 minutes data per frame
for (int count = 0; count < 6; count++) {
nextTime();
plotTime();
}
}));
animation.setCycleCount(Animation.INDEFINITE);
}
public Parent createContent() {
xAxis = new NumberAxis(0, 24, 3);
final NumberAxis yAxis = new NumberAxis(0, 100, 10);
chart = new LineChart<>(xAxis, yAxis);
// setup chart
chart.getStylesheets().add(StockLineChartApp.class.getResource("StockLineChart.css").toExternalForm());
chart.setCreateSymbols(false);
chart.setAnimated(false);
chart.setLegendVisible(false);
chart.setTitle("ACME Company Stock");
xAxis.setLabel("Time");
xAxis.setForceZeroInRange(false);
yAxis.setLabel("Share Price");
yAxis
.setTickLabelFormatter(new NumberAxis.DefaultFormatter(yAxis, "$", null));
// add starting data
hourDataSeries = new XYChart.Series<>();
hourDataSeries.setName("Hourly Data");
minuteDataSeries = new XYChart.Series<>();
minuteDataSeries.setName("Minute Data");
// create some starting data
hourDataSeries.getData()
.add(new XYChart.Data(timeInHours, prevY));
minuteDataSeries.getData()
.add(new XYChart.Data(timeInHours, prevY));
for (double m = 0; m < (60); m++) {
nextTime();
plotTime();
}
chart.getData().add(minuteDataSeries);
chart.getData().add(hourDataSeries);
return chart;
}
private void nextTime() {
if (minutes == 59) {
hours++;
minutes = 0;
} else {
minutes++;
}
timeInHours = hours + ((1d / 60d) * minutes);
}
private void plotTime() {
if ((timeInHours % 1) == 0) {
// change of hour
double oldY = y;
y = prevY - 10 + (Math.random() * 20);
prevY = oldY;
while (y < 10 || y > 90) {
y = y - 10 + (Math.random() * 20);
}
hourDataSeries.getData()
.add(new XYChart.Data(timeInHours, prevY));
// after 25hours delete old data
if (timeInHours > 25) {
hourDataSeries.getData().remove(0);
}
// every hour after 24 move range 1 hour
if (timeInHours > 24) {
xAxis.setLowerBound(xAxis.getLowerBound() + 1);
xAxis.setUpperBound(xAxis.getUpperBound() + 1);
}
}
double min = (timeInHours % 1);
double randomPickVariance = Math.random();
if (randomPickVariance < 0.3) {
double minY = prevY + ((y - prevY) * min) - 4 + (Math.random() * 8);
minuteDataSeries.getData().add(new XYChart.Data(timeInHours, minY));
} else if (randomPickVariance < 0.7) {
double minY = prevY + ((y - prevY) * min) - 6 + (Math.random() * 12);
minuteDataSeries.getData().add(new XYChart.Data(timeInHours, minY));
} else if (randomPickVariance < 0.95) {
double minY = prevY + ((y - prevY) * min) - 10 + (Math.random() * 20);
minuteDataSeries.getData().add(new XYChart.Data(timeInHours, minY));
} else {
double minY = prevY + ((y - prevY) * min) - 15 + (Math.random() * 30);
minuteDataSeries.getData().add(new XYChart.Data(timeInHours, minY));
}
// after 25hours delete old data
if (timeInHours > 25) {
minuteDataSeries.getData().remove(0);
}
}
public void play() {
animation.play();
}
@Override
public void stop() {
animation.pause();
}
@Override public void start(Stage primaryStage) throws Exception {
primaryStage.setScene(new Scene(createContent()));
primaryStage.show();
play();
}
/**
* Java main for when running without JavaFX launcher
* @param args command line arguments
*/
public static void main(String[] args) {
launch(args);
}
}
