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Java > Open Source Codes > org > jfree > experimental > chart > demo > DialDemo1


1 /* --------------
2  * DialDemo1.java
3  * --------------
4  * (C) Copyright 2006, by Object Refinery Limited.
5  */
6
7 package org.jfree.experimental.chart.demo;
8
9 import java.awt.BorderLayout JavaDoc;
10 import java.awt.Color JavaDoc;
11 import java.awt.Dimension JavaDoc;
12 import java.awt.Font JavaDoc;
13 import java.awt.GradientPaint JavaDoc;
14 import java.awt.Point JavaDoc;
15 import javax.swing.JFrame JavaDoc;
16 import javax.swing.JPanel JavaDoc;
17 import javax.swing.JSlider JavaDoc;
18 import javax.swing.event.ChangeEvent JavaDoc;
19 import javax.swing.event.ChangeListener JavaDoc;
20 import org.jfree.chart.ChartPanel;
21 import org.jfree.chart.JFreeChart;
22 import org.jfree.experimental.chart.plot.dial.DialPlot;
23 import org.jfree.experimental.chart.plot.dial.SimpleDialFrame;
24 import org.jfree.experimental.chart.plot.dial.DialTextAnnotation;
25 import org.jfree.experimental.chart.plot.dial.StandardDialRange;
26 import org.jfree.experimental.chart.plot.dial.StandardDialScale;
27 import org.jfree.experimental.chart.plot.dial.DialBackground;
28 import org.jfree.experimental.chart.plot.dial.DialCap;
29 import org.jfree.experimental.chart.plot.dial.DialPointer;
30 import org.jfree.experimental.chart.plot.dial.DialValueIndicator;
31 import org.jfree.data.general.DefaultValueDataset;
32 import org.jfree.ui.GradientPaintTransformType;
33 import org.jfree.ui.StandardGradientPaintTransformer;
34
35 /**
36  * A sample application showing the use of a {@link DialPlot}.
37  */
38 public class DialDemo1 extends JFrame JavaDoc implements ChangeListener JavaDoc {
39     
40     /** A slider to update the dataset value. */
41     JSlider JavaDoc slider;
42     
43     /** The dataset. */
44     DefaultValueDataset dataset;
45     
46     /**
47      * Creates a new instance.
48      *
49      * @param title the frame title.
50      */
51     public DialDemo1(String JavaDoc title) {
52         super(title);
53         
54         dataset = new DefaultValueDataset(10.0);
55         
56         // get data for diagrams
57 DialPlot plot = new DialPlot();
58         plot.setView(0.0, 0.0, 1.0, 1.0);
59         plot.setDataset(dataset);
60         SimpleDialFrame dialFrame = new SimpleDialFrame();
61         dialFrame.setBackgroundPaint(Color.lightGray);
62         dialFrame.setForegroundPaint(Color.darkGray);
63         plot.setDialFrame(dialFrame);
64         
65         GradientPaint JavaDoc gp = new GradientPaint JavaDoc(new Point JavaDoc(),
66                 new Color JavaDoc(255, 255, 255), new Point JavaDoc(),
67                 new Color JavaDoc(170, 170, 220));
68         DialBackground db = new DialBackground(gp);
69         db.setGradientPaintTransformer(new StandardGradientPaintTransformer(
70                 GradientPaintTransformType.VERTICAL));
71         plot.setBackground(db);
72         
73         DialTextAnnotation annotation1 = new DialTextAnnotation("Temperature");
74         annotation1.setFont(new Font JavaDoc("Dialog", Font.BOLD, 14));
75         annotation1.setRadius(0.7);
76         
77         plot.addLayer(annotation1);
78
79         DialValueIndicator dvi = new DialValueIndicator(0, "c");
80         plot.addLayer(dvi);
81         
82         StandardDialScale scale = new StandardDialScale(-40, 60, -120, -300);
83         scale.setTickRadius(0.88);
84         scale.setTickLabelOffset(0.15);
85         scale.setTickLabelFont(new Font JavaDoc("Dialog", Font.PLAIN, 14));
86         plot.addScale(0, scale);
87         
88         StandardDialRange range = new StandardDialRange(40.0, 60.0, Color.red);
89         range.setInnerRadius(0.52);
90         range.setOuterRadius(0.55);
91         plot.addLayer(range);
92         
93         StandardDialRange range2 = new StandardDialRange(10.0, 40.0,
94                 Color.orange);
95         range2.setInnerRadius(0.52);
96         range2.setOuterRadius(0.55);
97         plot.addLayer(range2);
98
99         StandardDialRange range3 = new StandardDialRange(-40.0, 10.0,
100                 Color.green);
101         range3.setInnerRadius(0.52);
102         range3.setOuterRadius(0.55);
103         plot.addLayer(range3);
104
105         DialPointer needle = new DialPointer.Pointer();
106         plot.addLayer(needle);
107         
108         DialCap cap = new DialCap();
109         cap.setRadius(0.10);
110         plot.setCap(cap);
111         
112         JFreeChart chart1 = new JFreeChart(plot);
113         chart1.setTitle("Demo Dial 1");
114         ChartPanel cp1 = new ChartPanel(chart1);
115         cp1.setPreferredSize(new Dimension JavaDoc(400, 400));
116         slider = new JSlider JavaDoc(-40, 60);
117         slider.setMajorTickSpacing(10);
118         slider.setPaintLabels(true);
119         slider.addChangeListener(this);
120         JPanel JavaDoc content = new JPanel JavaDoc(new BorderLayout JavaDoc());
121         content.add(cp1);
122         content.add(slider, BorderLayout.SOUTH);
123         setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
124         setContentPane(content);
125     }
126     
127     /**
128      * Handle a change in the slider by updating the dataset value. This
129      * automatically triggers a chart repaint.
130      *
131      * @param e the event.
132      */
133     public void stateChanged(ChangeEvent JavaDoc e) {
134         this.dataset.setValue(new Integer JavaDoc(slider.getValue()));
135     }
136
137     /**
138      * Starting point for the demo application.
139      *
140      * @param args ignored.
141      */
142     public static void main(String JavaDoc[] args) {
143         DialDemo1 app = new DialDemo1("JFreeChart - Demo Dial 1");
144         app.pack();
145         app.setVisible(true);
146     }
147
148 }
149
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