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1
23
24 package de.progra.charting.test;
25
26 import java.awt.*;
27 import java.awt.event.*;
28 import javax.swing.*;
29 import javax.swing.filechooser.*;
30 import java.io.*;
31 import java.util.*;
32 import de.progra.charting.swing.*;
33 import de.progra.charting.event.*;
34 import de.progra.charting.model.*;
35 import de.progra.charting.render.*;
36 import de.progra.charting.*;
37
41 public class GraphFrame extends javax.swing.JFrame  implements ActionListener, ChartDataModelListener {
42
43 ChartPanel panel;
44 EditableChartDataModel data;
45 javax.swing.Timer t = new javax.swing.Timer (1000, this);
46 double time = 3.0;
47
48
49 public GraphFrame() {
50 double[][] model = {{25.0, 22.0, 23.0},
51 {13.0, 11.0, 12.0}};
52
53 double[] columns = {0.0, 1.0, 2.0};
54 String [] columnString = {"1998", "1999", "2000"};
55 String [] rows = {"Int. Temp.", "Ext. Temp."};
56
57 String title = "Viewing Internal & External Temperature";
58
59 data = new EditableChartDataModel(model, columns, rows);
60 panel = new ChartPanel(data, title, DefaultChart.LINEAR_X_LINEAR_Y);
62 panel.addChartRenderer(new LineChartRenderer(panel.getCoordSystem(), data), 1);
63 data.addChartDataModelListener(this);
64 panel.addMouseListener(new MouseAdapter() {
65 public void mouseClicked(MouseEvent m) {
66 if(SwingUtilities.isRightMouseButton(m)) {
67 jPopupMenu1.setLocation(m.getX(), m.getY());
68 jPopupMenu1.setVisible(true);
69 } else
70 jPopupMenu1.setVisible(false);
71
72 }
73 });
74 initComponents();
75 t.start();
76 setSize(640, 480);
77 this.getContentPane().add(panel, BorderLayout.CENTER);
78 }
79
80 public void actionPerformed(ActionEvent evt) {
81 data.insertValue(0, new Double (Math.random() * 10.0 + 20.0), new Double (time));
82 data.insertValue(1, new Double (Math.random() * 7.0 + 10.0), new Double (time));
83
84 time++;
85 }
86
87 public void chartDataChanged(ChartDataModelEvent evt) {
88 panel.revalidate();
90 repaint();
91 }
92
93
98 private void initComponents() { jPopupMenu1 = new javax.swing.JPopupMenu ();
100 jMenuItem1 = new javax.swing.JMenuItem ();
101
102 jMenuItem1.setText("Export Image file ...");
103 jMenuItem1.addActionListener(new java.awt.event.ActionListener () {
104 public void actionPerformed(java.awt.event.ActionEvent evt) {
105 jMenuItem1ActionPerformed(evt);
106 }
107 });
108
109 jPopupMenu1.add(jMenuItem1);
110
111 addWindowListener(new java.awt.event.WindowAdapter () {
112 public void windowClosing(java.awt.event.WindowEvent evt) {
113 exitForm(evt);
114 }
115 });
116
117 pack();
118 }
120 private void jMenuItem1ActionPerformed(java.awt.event.ActionEvent evt) { JFileChooser f = new JFileChooser(System.getProperty("user.home"));
123 f.setFileFilter(new ImageFilter(ChartEncoder.getSupportedFormats()));
124 int ret = f.showSaveDialog(this);
125
126 if(ret != JFileChooser.APPROVE_OPTION)
127 return;
128
129 File selected = f.getSelectedFile();
130 String filename = selected.getPath();
131 String fileending = filename.substring(filename.lastIndexOf('.')+1);
132 System.out.println("** filename = "+filename+" fileending = "+fileending);
133 boolean equals = false;
134 String [] supported = ChartEncoder.getSupportedFormats();
135
136 for( int i = 0; i < supported.length; i++) {
137 if(fileending.equalsIgnoreCase(supported[i]))
138 equals = true;
139 }
140
141 if( ! equals) {
142 fileending = "png";
143 filename = filename.substring(0, filename.lastIndexOf('.')) + "." +fileending;
144 System.out.println("** filename = "+filename+" fileending = "+fileending);
145 selected = new File(filename);
146 }
147
148 try {
149 ChartEncoder.createEncodedImage(new FileOutputStream(selected), panel, fileending);
150 } catch(Exception e) {
151 JOptionPane.showMessageDialog(this, e.getMessage(), "Fehler beim Speichern", JOptionPane.ERROR_MESSAGE);
152 System.out.println("** Error creating the nevilletest.png file, showing the Neville Interpolation.");
153 e.printStackTrace();
154 return;
155 }
156 }
158
159 private void exitForm(java.awt.event.WindowEvent evt) { System.exit(0);
161 }
163
166 public static void main(String args[]) {
167 new GraphFrame().show();
168 }
169
170
171 private javax.swing.JPopupMenu jPopupMenu1;
173 private javax.swing.JMenuItem jMenuItem1;
174
176 }
177
178 class ImageFilter extends javax.swing.filechooser.FileFilter {
179
180 protected Set supported = new HashSet();
181 StringBuffer descr = new StringBuffer ("Image Files");
182 public ImageFilter(String [] accepted) {
183 descr.append(" (");
184 for(int i = 0; i < accepted.length; i++) {
185 supported.add(accepted[i]);
186 descr.append("*."+accepted[i]);
187
188 if(i < accepted.length - 1)
189 descr.append(", ");
190 }
191 descr.append(" )");
192 }
193
194 public boolean accept(File f) {
196
197 if (f.isDirectory()) {
198 return true;
199 }
200
201 String s = f.getName();
202 int i = s.lastIndexOf('.');
203
204 if (i > 0 && i < s.length() - 1) {
205 String extension = s.substring(i+1).toLowerCase();
206 if (supported.contains(extension)) {
207 return true;
208 } else {
209 return false;
210 }
211 }
212
213 return false;
214 }
215
216 public String getDescription() {
218 return descr.toString();
219 }
220 } |
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