1 /*
2 * Copyright (c) 2008, 2015, Oracle and/or its affiliates.
3 * All rights reserved. Use is subject to license terms.
4 *
5 * This file is available and licensed under the following license:
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 *
11 * - Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * - Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in
15 * the documentation and/or other materials provided with the distribution.
16 * - Neither the name of Oracle Corporation nor the names of its
17 * contributors may be used to endorse or promote products derived
18 * from this software without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
23 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
24 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
25 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
26 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
30 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 */
32 package ensemble.samples.charts.line.stock;
33
34
35 import javafx.animation.Animation;
36 import javafx.animation.KeyFrame;
37 import javafx.animation.Timeline;
38 import javafx.application.Application;
39 import javafx.event.ActionEvent;
40 import javafx.event.EventHandler;
41 import javafx.scene.Parent;
42 import javafx.scene.Scene;
43 import javafx.scene.chart.LineChart;
44 import javafx.scene.chart.NumberAxis;
45 import javafx.scene.chart.XYChart;
46 import javafx.stage.Stage;
47 import javafx.util.Duration;
48
49
50 /**
51 * A simulated stock line chart.
52 *
53 * @sampleName Stock Line Chart
54 * @preview preview.png
55 * @see javafx.scene.chart.LineChart
56 * @see javafx.scene.chart.NumberAxis
57 * @docUrl https://docs.oracle.com/javafx/2/charts/jfxpub-charts.htm Using JavaFX Charts Tutorial
58 */
59 public class StockLineChartApp extends Application {
60
61 private LineChart<Number, Number> chart;
62 private XYChart.Series<Number, Number> hourDataSeries;
63 private XYChart.Series<Number, Number> minuteDataSeries;
64 private NumberAxis xAxis;
65 private Timeline animation;
66 private double hours = 0;
67 private double minutes = 0;
68 private double timeInHours = 0;
69 private double prevY = 10;
70 private double y = 10;
71
72 public StockLineChartApp() {
73 // create timeline to add new data every 60th of second
74 animation = new Timeline();
75 animation.getKeyFrames()
76 .add(new KeyFrame(Duration.millis(1000 / 60), (ActionEvent actionEvent) -> {
77 // 6 minutes data per frame
78 for (int count = 0; count < 6; count++) {
79 nextTime();
80 plotTime();
81 }
82 }));
83 animation.setCycleCount(Animation.INDEFINITE);
84 }
85
86 public Parent createContent() {
87 xAxis = new NumberAxis(0, 24, 3);
88 final NumberAxis yAxis = new NumberAxis(0, 100, 10);
89 chart = new LineChart<>(xAxis, yAxis);
90 // setup chart
91 chart.getStylesheets().add(StockLineChartApp.class.getResource("StockLineChart.css").toExternalForm());
92 chart.setCreateSymbols(false);
93 chart.setAnimated(false);
94 chart.setLegendVisible(false);
95 chart.setTitle("ACME Company Stock");
96 xAxis.setLabel("Time");
97 xAxis.setForceZeroInRange(false);
98 yAxis.setLabel("Share Price");
99 yAxis
100 .setTickLabelFormatter(new NumberAxis.DefaultFormatter(yAxis, "$", null));
101 // add starting data
102 hourDataSeries = new XYChart.Series<>();
103 hourDataSeries.setName("Hourly Data");
104 minuteDataSeries = new XYChart.Series<>();
105 minuteDataSeries.setName("Minute Data");
106 // create some starting data
107 hourDataSeries.getData()
108 .add(new XYChart.Data<Number, Number>(timeInHours, prevY));
109 minuteDataSeries.getData()
110 .add(new XYChart.Data<Number, Number>(timeInHours, prevY));
111 for (double m = 0; m < (60); m++) {
112 nextTime();
113 plotTime();
114 }
115 chart.getData().add(minuteDataSeries);
116 chart.getData().add(hourDataSeries);
117 return chart;
118 }
119
120 private void nextTime() {
121 if (minutes == 59) {
122 hours++;
123 minutes = 0;
124 } else {
125 minutes++;
126 }
127 timeInHours = hours + ((1d / 60d) * minutes);
128 }
129
130 private void plotTime() {
131 if ((timeInHours % 1) == 0) {
132 // change of hour
133 double oldY = y;
134 y = prevY - 10 + (Math.random() * 20);
135 prevY = oldY;
136 while (y < 10 || y > 90) {
137 y = y - 10 + (Math.random() * 20);
138 }
139 hourDataSeries.getData()
140 .add(new XYChart.Data<Number, Number>(timeInHours, prevY));
141 // after 25hours delete old data
142 if (timeInHours > 25) {
143 hourDataSeries.getData().remove(0);
144 }
145 // every hour after 24 move range 1 hour
146 if (timeInHours > 24) {
147 xAxis.setLowerBound(xAxis.getLowerBound() + 1);
148 xAxis.setUpperBound(xAxis.getUpperBound() + 1);
149 }
150 }
151 double min = (timeInHours % 1);
152 double randomPickVariance = Math.random();
153 if (randomPickVariance < 0.3) {
154 double minY = prevY + ((y - prevY) * min) - 4 + (Math.random() * 8);
155 minuteDataSeries.getData().add(new XYChart.Data<Number, Number>(timeInHours, minY));
156 } else if (randomPickVariance < 0.7) {
157 double minY = prevY + ((y - prevY) * min) - 6 + (Math.random() * 12);
158 minuteDataSeries.getData().add(new XYChart.Data<Number, Number>(timeInHours, minY));
159 } else if (randomPickVariance < 0.95) {
160 double minY = prevY + ((y - prevY) * min) - 10 + (Math.random() * 20);
161 minuteDataSeries.getData().add(new XYChart.Data<Number, Number>(timeInHours, minY));
162 } else {
163 double minY = prevY + ((y - prevY) * min) - 15 + (Math.random() * 30);
164 minuteDataSeries.getData().add(new XYChart.Data<Number, Number>(timeInHours, minY));
165 }
166 // after 25hours delete old data
167 if (timeInHours > 25) {
168 minuteDataSeries.getData().remove(0);
169 }
170 }
171
172 public void play() {
173 animation.play();
174 }
175
176 @Override
177 public void stop() {
178 animation.pause();
179 }
180
181 @Override public void start(Stage primaryStage) throws Exception {
182 primaryStage.setScene(new Scene(createContent()));
183 primaryStage.show();
184 play();
185 }
186
187 /**
188 * Java main for when running without JavaFX launcher
189 * @param args command line arguments
190 */
191 public static void main(String[] args) {
192 launch(args);
193 }
194 }