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1
22
23 package demo.draw;
24
25 import java.awt.*;
26 import java.awt.event.*;
27 import java.awt.geom.*;
28 import java.io.*;
29 import java.util.*;
30 import javax.swing.*;
31 import apollo.*;
32 import houston.*;
33
34 public class AppFrame extends JFrame
35 {
36 public final static String  APP_TITLE = "Secure Draw";
37 private Canvas _canvas;
38 private SecureFileChooser _chooser;
39 private FileContents _contents;
40
41 public AppFrame()
42 {
43 super( APP_TITLE );
44
45 JMenuBar menuBar = new JMenuBar();
46
47 JMenu fileMenu = new JMenu( "File" );
48
49 JMenuItem newMi = new JMenuItem( "New" );
50 newMi.addActionListener(
51 new ActionListener()
52 {
53 public void actionPerformed( ActionEvent ev )
54 {
55 onNew();
56 }
57 } );
58 fileMenu.add( newMi );
59
60 JMenuItem openMi = new JMenuItem( "Open" );
61 openMi.addActionListener(
62 new ActionListener()
63 {
64 public void actionPerformed( ActionEvent ev )
65 {
66 onOpen();
67 }
68 } );
69 fileMenu.add( openMi );
70
71 JMenuItem saveMi = new JMenuItem( "Save" );
72 saveMi.addActionListener(
73 new ActionListener()
74 {
75 public void actionPerformed( ActionEvent ev )
76 {
77 onSave();
78 }
79 } );
80 fileMenu.add( saveMi );
81
82 JMenuItem printMi = new JMenuItem( "Print" );
83 printMi.addActionListener(
84 new ActionListener()
85 {
86 public void actionPerformed( ActionEvent ev )
87 {
88 onPrint();
89 }
90 } );
91 fileMenu.add( printMi );
92
93 JMenuItem exitMi = new JMenuItem( "Exit" );
94 exitMi.addActionListener(
95 new ActionListener()
96 {
97 public void actionPerformed( ActionEvent ev )
98 {
99 onExit();
100 }
101 } );
102 fileMenu.addSeparator();
103 fileMenu.add( exitMi );
104
105 JMenu editMenu = new JMenu( "Edit" );
106 JMenuItem copyMi = new JMenuItem( "Copy" );
107 copyMi.addActionListener(
108 new ActionListener()
109 {
110 public void actionPerformed( ActionEvent ev )
111 {
112 onCopy();
113 }
114 } );
115 editMenu.add( copyMi );
116
117 menuBar.add( fileMenu );
118 menuBar.add( editMenu );
119
120 setJMenuBar( menuBar );
121
122 _canvas = new Canvas();
123
124 getContentPane().setLayout( new BorderLayout() );
125 getContentPane().add( _canvas, BorderLayout.CENTER );
126
127 _chooser = new SecureFileChooser();
128
129 setSize( 400, 400 );
130
131 updateTitle();
132
133 addWindowListener(
134 new WindowAdapter()
135 {
136 public void windowClosing( WindowEvent e )
137 {
138 onExit();
139 }
140 } );
141 }
142
143 public void onCopy()
144 {
145 Image image = _canvas.getImage();
146 TransferableImage trans = new TransferableImage( image );
147
148 SecureClipboard.setContents( trans );
149 }
150
151 public void onExit()
152 {
153 setVisible( false );
154 dispose();
155 System.exit( 0 );
156 }
157
158 public void onNew()
159 {
160 _contents = null;
161 _canvas.clear();
162 updateTitle();
163 }
164
165 public void onOpen()
166 {
167 try
168 {
169 if( _chooser.showOpenDialog() == SecureFileChooser.CANCEL )
170 return;
171
172 _contents = _chooser.getFileContents();
173 _canvas.clear();
174 open( _contents.getInputStream() );
175 _canvas.repaint();
176 updateTitle();
177 }
178 catch( IOException ioex )
179 {
180 Status.error( "*** failed to open drawing: " + ioex.toString() );
181 }
182
183 }
184
185
186 public void onPrint()
187 {
188 PrintService ps = ServiceManager.lookupPrintService();
189 boolean ok = ps.print( _canvas );
190 if( !ok )
191 Status.error( "*** failed to print drawing" );
192 }
193
194 public void onSave()
195 {
196 try
197 {
198 if( _contents == null )
199 {
200
202 PipedInputStream in = new PipedInputStream();
203 final PipedOutputStream out = new PipedOutputStream( in );
204
205 Thread writeWorker = new Thread (
206 new Runnable ()
207 {
208 public void run()
209 {
210 try
211 {
212 save( out );
213 }
214 catch( IOException ioex )
215 {
216 Status.error( "*** failed to save drawing: " + ioex.toString() );
217 }
218 finally
219 {
220 try
221 {
222 out.close();
223 }
224 catch( IOException ioex )
225 {}
226 }
227 }
228 } );
229 writeWorker.start();
230
231 if( _chooser.showSaveDialog( in ) == SecureFileChooser.CANCEL )
232 return;
233
234 _contents = _chooser.getFileContents();
235 updateTitle();
236 }
237 else
238 {
239 OutputStream out = _contents.getOutputStream( true );
240
243 save( out );
244 out.flush();
245 out.close();
246 }
247 }
248 catch( IOException ioex )
249 {
250 Status.error( "*** failed to save drawing: " + ioex.toString() );
251 }
252 }
253
254 private void open( InputStream in ) throws IOException
255 {
256 open( new DataInputStream( in ) );
257 }
258
259 private void open( DataInputStream in ) throws IOException
260 {
261 java.util.List lines = _canvas.getLines();
262
263 int lineCount = in.readInt();
264
265 for( int i = 0; i < lineCount; i++ )
266 {
267 double x1 = in.readDouble();
268 double y1 = in.readDouble();
269 double x2 = in.readDouble();
270 double y2 = in.readDouble();
271
272 Line2D.Double line = new Line2D.Double( x1, y1, x2, y2 );
273 lines.add( line );
274 }
275 }
276
277 private void save( OutputStream out ) throws IOException
278 {
279 save( new DataOutputStream( out ) );
280 }
281
282 private void save( DataOutputStream out ) throws IOException
283 {
284 java.util.List lines = _canvas.getLines();
285
286 int lineCount = lines.size();
287 out.writeInt( lineCount );
288
289 for( int i = 0; i < lineCount; i++ )
290 {
291 Line2D line = ( Line2D ) lines.get( i );
292 out.writeDouble( line.getX1() );
293 out.writeDouble( line.getY1() );
294 out.writeDouble( line.getX2() );
295 out.writeDouble( line.getY2() );
296 }
297 }
298
299 private void updateTitle()
300 {
301 if( _contents == null )
302 setTitle( "Untitled - " + APP_TITLE );
303 else
304 {
305 try
306 {
307 setTitle( _contents.getName() + " (" + _contents.getLength() + "/"
308 + _contents.getMaxLength() + ") - " + APP_TITLE );
309 }
310 catch( IOException ioex )
311 {
312 Status.error( "*** failed to retrieve document name: " + ioex.toString() );
313 }
314 }
315 }
316 }
317 |
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