|
1 package snow.utils.gui;
2
3 import javax.swing.*;
4 import java.awt.*;
5 import java.awt.event.*;
6 import javax.swing.event.*;
7
8
9 public class FontSelector extends JDialog
10 {
11
12 private static Font DefaultFont = new Font("Dialog",Font.PLAIN,12);
13 private static FontSelector dialog;
14 private static String  NameValue;
15 private static int StyleValue;
16 private static int SizeValue;
17 private static String SaveNameValue;
18 private static int SaveStyleValue;
19 private static int SaveSizeValue;
20 private static boolean FontChosen = false;
21
22
23 private JList theFontNamesList;
24 private JTextField SizeField;
25 private JList styleList;
26 private JCheckBox fontBold, fontItalic;
27 private JLabel sampleTextLabel;
28 private Container contentPane;
29 final JButton cancelButton = new JButton("Cancel");
30 final JButton setButton = new JButton("Set");
31
32
33
34
35
36 private FontSelector( Frame frame,
37 String [] fontNames,
38 String title )
39 {
40 super(frame, title, true);
41
42
44 cancelButton.addActionListener(new ActionListener()
45 {
46 public void actionPerformed(ActionEvent e)
47 {
48 FontChosen = false;
49 FontSelector.dialog.setVisible(false);
50 }
51 });
52
53 setButton.addActionListener(new ActionListener()
54 {
55 public void actionPerformed(ActionEvent e)
56 {
57 Object [] selected = theFontNamesList.getSelectedValues();
59 if ( (selected != null) && (selected.length > 0) )
60 {
61 boolean valid = true;
62 NameValue = selected[0].toString();
63 try
64 {
65 SizeValue = Integer.parseInt(SizeField.getText());
66 if ( (SizeValue > 0) && (SizeValue < 65) )
67 {
68 StyleValue = (fontBold.isSelected() ? Font.BOLD : 0) +
69 (fontItalic.isSelected() ? Font.ITALIC : 0);
70 FontChosen = true;
72 FontSelector.dialog.setVisible(false);
73 }
74 else
75 {
76 valid = false;
77 }
78 }
79 catch (Exception ex)
80 {
81 valid = false;
82 }
83 if (!valid)
84 {
85 JOptionPane.showMessageDialog(FontSelector.this, "Please enter valid values.", "Invalid Value", JOptionPane.INFORMATION_MESSAGE);
86 SizeField.requestFocus();
87 SizeField.selectAll();
88 }
89 }
90 }
91 });
92 getRootPane().setDefaultButton(setButton);
93
94
95 theFontNamesList = new JList(fontNames);
97 theFontNamesList.setSelectionMode(ListSelectionModel.SINGLE_INTERVAL_SELECTION);
98
99 this.theFontNamesList.setSelectedValue(NameValue,true);
101
102 theFontNamesList.addListSelectionListener( new MyNameListSelectionListener());
103 JScrollPane listScroller = new JScrollPane(theFontNamesList);
104
105
106 Dimension listDim = new Dimension( SizeValue * 30, SizeValue * 10 );
108 listScroller.setPreferredSize(listDim);
109 listScroller.setMinimumSize(listDim);
110 listScroller.setMaximumSize(listDim);
111
112 JPanel listPane = new JPanel();
117 listPane.setLayout(new BoxLayout(listPane, BoxLayout.Y_AXIS));
118 listPane.add(Box.createRigidArea(new Dimension(0,5)));
119 listPane.add(listScroller);
120 listPane.setBorder(BorderFactory.createEmptyBorder(10,10,10,10));
121
122
124 Integer theValue = new Integer (SizeValue);
125 SizeField = new JTextField(theValue.toString(), 4);
126 SizeField.setHorizontalAlignment(SwingConstants.RIGHT);
127
128 fontBold = new JCheckBox("Bold");
129 if( (StyleValue & Font.BOLD) > 0)
130 {
131 fontBold.setSelected(true);
132 } else
133 {
134 fontBold.setSelected(false);
135 }
136
137 fontItalic = new JCheckBox("Italic");
138 if( (StyleValue & Font.ITALIC) > 0)
139 {
140 fontItalic.setSelected(true);
141 } else
142 {
143 fontItalic.setSelected(false);
144 }
145
146 ActionListener fontActionListener = new ActionListener()
149 {
150 public void actionPerformed(ActionEvent evt)
151 {
152 Object [] selected = theFontNamesList.getSelectedValues();
153 if ( (selected != null) && (selected.length > 0) )
154 {
155 boolean valid = true;
156 NameValue = selected[0].toString();
157 try
158 {
159 SizeValue = Integer.parseInt(SizeField.getText());
160
161 if ( (SizeValue > 0) && (SizeValue < 65) )
162 {
163 StyleValue = (fontBold.isSelected() ? Font.BOLD : 0) +
164 (fontItalic.isSelected() ? Font.ITALIC : 0);
165 Font selectedFont = new Font(NameValue,StyleValue,SizeValue);
166 sampleTextLabel.setFont(selectedFont);
167 dialog.pack();
168 dialog.repaint();
169 sampleTextLabel.repaint();
170 }
171 else
172 {
173 valid = false;
174 }
175 }
176 catch (Exception ex)
177 {
178 valid = false;
179 }
180 if (!valid)
181 {
182 JOptionPane.showMessageDialog(FontSelector.this, "Please enter valid values.", "Invalid Value", JOptionPane.INFORMATION_MESSAGE);
183 SizeField.requestFocus();
184 SizeField.selectAll();
185 }
186 }
187 }
188 };
189 SizeField.addActionListener(fontActionListener);
190 fontBold.addActionListener(fontActionListener);
191 fontItalic.addActionListener(fontActionListener);
192
193 JPanel stylePane = new JPanel();
194 stylePane.setLayout(new FlowLayout(FlowLayout.CENTER,20,20));
195 JLabel txtlabel = new JLabel(" Font Size : ",JLabel.CENTER);
196 txtlabel.setFont( new Font(NameValue,StyleValue,SizeValue) );
197 txtlabel.setForeground(Color.black);
198 stylePane.add(txtlabel);
199 stylePane.add(SizeField);
200 stylePane.add(fontBold);
201 stylePane.add(fontItalic);
202
203
205 JPanel buttonPane = new JPanel();
206 buttonPane.add(cancelButton);
207 buttonPane.add(setButton);
208
209
210 JPanel samplePane = new JPanel();
212 samplePane.setLayout(new FlowLayout(FlowLayout.CENTER,10,10));
213 sampleTextLabel = new JLabel("This is a sample text.",JLabel.CENTER);
214 sampleTextLabel.setFont( new Font(NameValue,StyleValue,SizeValue) );
215 sampleTextLabel.setForeground(Color.black);
216 samplePane.add(sampleTextLabel);
217
218
219 JPanel bottomPane = new JPanel();
220 bottomPane.setLayout(new BorderLayout(5,5));
221 bottomPane.add(samplePane,BorderLayout.NORTH );
222 bottomPane.add(buttonPane,BorderLayout.SOUTH );
223
224
225 this.getContentPane().setLayout(new BorderLayout(5,5));
226
227 contentPane = getContentPane();
229 contentPane.add(listPane ,BorderLayout.NORTH );
230 contentPane.add(stylePane ,BorderLayout.CENTER);
231 contentPane.add(bottomPane ,BorderLayout.SOUTH );
232
233 pack();
234 }
235
236
237 class MyNameListSelectionListener implements ListSelectionListener
238 {
239 public void valueChanged(ListSelectionEvent evt)
240 {
241 if( !evt.getValueIsAdjusting())
242 {
243 JList thisList = (JList)evt.getSource();
244 Object [] selected = thisList.getSelectedValues();
245
246 if ( (selected != null) && (selected.length > 0) )
247 {
248 try
249 {
250 FontSelector.NameValue = selected[0].toString();
251 FontSelector.SizeValue = Integer.parseInt(SizeField.getText());
252 FontSelector.StyleValue = (fontBold.isSelected() ? Font.BOLD : 0) +
253 (fontItalic.isSelected() ? Font.ITALIC : 0);
254
255 Font selectedFont = new Font(NameValue,StyleValue,SizeValue);
256 sampleTextLabel.setFont(selectedFont);
257 dialog.pack();
258 dialog.repaint();
259 sampleTextLabel.repaint();
260 }
261 catch (Exception ex) {}
262 }
263 }
264 }
265 }
266
267
268
269 public static Font showDialog(Component comp)
270 {
271 if (dialog != null)
272 {
273 dialog.setLocationRelativeTo(comp);
274 int selIndex = dialog.theFontNamesList.getSelectedIndex();
275 if( selIndex >= 0 )
276 {
277 Rectangle selRect = dialog.theFontNamesList.getCellBounds(selIndex,selIndex);
278 dialog.theFontNamesList.scrollRectToVisible( selRect );
279 }
280 dialog.setVisible(true);
281 } else
282 {
283 System.out.println("ListDialog requires you to call initialize "
284 + "before calling showDialog.");
285 }
286 if (FontChosen)
287 {
288 return new Font(NameValue,StyleValue,SizeValue);
289 } else
290 {
291 return new Font(SaveNameValue,SaveStyleValue,SaveSizeValue);
292 }
293 }
294
295
296
297
298
299 public static Font chooseFont(Component parentFrame)
300 {
302 return FontSelector.chooseFont(parentFrame,DefaultFont);
303 }
304
305
306
307 public static Font chooseFont( Component parentFrame,
308 Font defaultFont )
309 {
311 DefaultFont = defaultFont; NameValue = DefaultFont.getName(); SizeValue = DefaultFont.getSize(); if( SizeValue < 6 ) { SizeValue = 6; }
315 if( SizeValue > 100 ) { SizeValue = 100; }
316 StyleValue = DefaultFont.getStyle(); SaveNameValue = NameValue; SaveSizeValue = SizeValue; SaveStyleValue = StyleValue; String [] fontNames = GraphicsEnvironment.getLocalGraphicsEnvironment().getAvailableFontFamilyNames();
322 Frame frame = JOptionPane.getFrameForComponent(parentFrame);
323 dialog = new FontSelector( frame,
324 fontNames,
325 "Choose a Font");
326 return FontSelector.showDialog(parentFrame);
327 }
328
329
330 } |
Popular Tags |
Java API By Example, From Geeks To Geeks.