001 package com.croftsoft.apps.savor;
002
003 import java.awt.*;
004 import java.awt.event.*;
005 import java.io.*;
006 import java.util.*;
007 import java.util.concurrent.*;
008 import java.util.logging.*;
009
010 import javax.imageio.ImageIO;
011
012 import org.jdesktop.jdic.screensaver.ScreensaverContext;
013 import org.jdesktop.jdic.screensaver.ScreensaverSettings;
014 import org.jdesktop.jdic.screensaver.SimpleScreensaver;
015
016 import com.croftsoft.core.awt.image.ImageLib;
017 import com.croftsoft.core.math.MathConstants;
018
019 /*********************************************************************
020 * CroftSoft Savor.
021 *
022 * @version
023 * $Id: SavorPix.java,v 1.17 2006/12/16 06:30:46 croft Exp $
024 * @since
025 * 2006-12-09
026 * @author
027 * <a href="https://www.croftsoft.com/">David Wallace Croft</a>
028 *********************************************************************/
029
030 public final class SavorPix
031 extends SimpleScreensaver
032 //////////////////////////////////////////////////////////////////////
033 //////////////////////////////////////////////////////////////////////
034 {
035
036 private static final String
037 PROPERTY_SHOW = "show",
038 PROPERTY_SPEED = "speed";
039
040 private static final String [ ] PROPERTY_SHOW_VALUES = {
041 "off",
042 "on" };
043
044 private static final String [ ] PROPERTY_SPEED_VALUES = {
045 "slow",
046 "medium",
047 "fast" };
048
049 private static final int [ ] DISPLAY_TIMES = {
050 600,
051 60,
052 6 };
053
054 private static final boolean [ ] SHOW_VALUES = {
055 false,
056 true };
057
058 private static final long DEFAULT_DISPLAY_TIME_NANOS
059 = DISPLAY_TIMES [ 0 ] * MathConstants.NANOSECONDS_PER_SECOND;
060
061 private static final boolean DEFAULT_SHOW
062 = SHOW_VALUES [ 0 ];
063
064 private static final int FRAME_PERIOD = 1;
065
066 //
067
068 private final Map<String, Integer> speedMap;
069
070 private final Map<String, Boolean> showMap;
071
072 private final Random random;
073
074 private final Logger logger;
075
076 //
077
078 private boolean
079 initialized,
080 show,
081 skip;
082
083 private int
084 componentWidth,
085 componentHeight;
086
087 private Image offscreenImage;
088
089 private String [ ] imageFilenames;
090
091 private long
092 displayTimeNanos,
093 lastTimeNanos;
094
095 //////////////////////////////////////////////////////////////////////
096 //////////////////////////////////////////////////////////////////////
097
098 public SavorPix ( )
099 //////////////////////////////////////////////////////////////////////
100 {
101 Logger.getLogger ( "org.jdesktop.jdic.screensaver" ).setLevel (
102 Level.FINEST );
103
104 logger = Logger.getLogger ( getClass ( ).getName ( ) );
105
106 logger.setLevel ( Level.FINEST );
107
108 // Turn this on for debugging.
109 // initLoggingToFiles ( logger );
110
111 random = new Random ( );
112
113 speedMap = new HashMap<String, Integer> ( );
114
115 for ( int i = 0; i < PROPERTY_SPEED_VALUES.length; i++ )
116 {
117 speedMap.put (
118 PROPERTY_SPEED_VALUES [ i ],
119 new Integer ( DISPLAY_TIMES [ i ] ) );
120 }
121
122 displayTimeNanos = DEFAULT_DISPLAY_TIME_NANOS;
123
124 showMap = new HashMap<String, Boolean> ( );
125
126 for ( int i = 0; i < PROPERTY_SHOW_VALUES.length; i++ )
127 {
128 showMap.put (
129 PROPERTY_SHOW_VALUES [ i ],
130 new Boolean ( SHOW_VALUES [ i ] ) );
131 }
132
133 show = DEFAULT_SHOW;
134 }
135
136 //////////////////////////////////////////////////////////////////////
137 //////////////////////////////////////////////////////////////////////
138
139 @Override
140 public synchronized void init ( )
141 //////////////////////////////////////////////////////////////////////
142 {
143 try
144 {
145 logger.entering ( getClass ( ).getName ( ), "init" );
146
147 lastTimeNanos = 0;
148
149 final ScreensaverContext screensaverContext = getContext ( );
150
151 final Component component = screensaverContext.getComponent ( );
152
153 componentWidth = component.getWidth ( );
154
155 componentHeight = component.getHeight ( );
156
157 if ( ( componentWidth > 0 )
158 && ( componentHeight > 0 ) )
159 {
160 offscreenImage
161 = component.createImage ( componentWidth, componentHeight );
162 }
163
164 // Might be called more than once
165
166 if ( initialized )
167 {
168 return;
169 }
170
171 initialized = true;
172
173 // Spacebar skipping stopped working in the switch from Java 5
174 // to Java 6. I do not know why.
175
176 component.addKeyListener (
177 new KeyAdapter ( )
178 {
179 @Override
180 public void keyPressed ( final KeyEvent keyEvent )
181 {
182 final int keyCode = keyEvent.getKeyCode ( );
183
184 if ( keyCode == KeyEvent.VK_SPACE )
185 {
186 logger.info ( "spacebar pressed" );
187
188 skip = true;
189 }
190 }
191 } );
192
193 component.requestFocus ( );
194
195 final Integer displayTimeInteger
196 = ( Integer ) getPropertyValue ( PROPERTY_SPEED, speedMap );
197
198 if ( displayTimeInteger != null )
199 {
200 displayTimeNanos = displayTimeInteger.intValue ( )
201 * MathConstants.NANOSECONDS_PER_SECOND;
202 }
203
204 final Boolean showBoolean
205 = ( Boolean ) getPropertyValue ( PROPERTY_SHOW, showMap );
206
207 if ( showBoolean != null )
208 {
209 show = showBoolean.booleanValue ( );
210 }
211
212 final Executor executor = Executors.newSingleThreadExecutor ( );
213
214 executor.execute (
215 new Runnable ( )
216 {
217 public void run ( )
218 {
219 imageFilenames = getImageFilenames ( );
220 }
221 } );
222 }
223 catch ( final Throwable throwable )
224 {
225 throwable.printStackTrace ( );
226
227 logger.throwing ( getClass ( ).getName ( ), "init", throwable );
228 }
229 finally
230 {
231 logger.exiting ( getClass ( ).getName ( ), "init" );
232 }
233 }
234
235 @Override
236 public void paint ( final Graphics graphics )
237 //////////////////////////////////////////////////////////////////////
238 {
239 try
240 {
241 if ( ( offscreenImage == null )
242 || ( imageFilenames == null )
243 || ( imageFilenames.length < 1 ) )
244 {
245 graphics.setColor ( Color.BLACK );
246
247 graphics.fillRect (
248 0, 0, Integer.MAX_VALUE, Integer.MAX_VALUE );
249
250 return;
251 }
252
253 final long currentTimeNanos = System.nanoTime ( );
254
255 final long deltaTimeNanos = currentTimeNanos - lastTimeNanos;
256
257 if ( skip
258 || ( deltaTimeNanos >= displayTimeNanos ) )
259 {
260 logger.info ( "paint changing image" );
261
262 skip = false;
263
264 lastTimeNanos = currentTimeNanos;
265
266 final Graphics2D offscreenGraphics2D
267 = ( Graphics2D ) offscreenImage.getGraphics ( );
268
269 offscreenGraphics2D.setColor ( Color.BLACK );
270
271 offscreenGraphics2D.fillRect (
272 0, 0, componentWidth, componentHeight );
273
274 if ( ( imageFilenames != null )
275 && ( imageFilenames.length > 0 ) )
276 {
277 final int imageIndex
278 = random.nextInt ( imageFilenames.length );
279
280 final String imageFilename = imageFilenames [ imageIndex ];
281
282 logger.info ( imageFilename );
283
284 final File imageFile = new File ( imageFilename );
285
286 final Image image = ImageIO.read ( imageFile );
287
288 final Rectangle rectangle = ImageLib.shrinkToFitAndCenter (
289 image.getWidth ( null ),
290 image.getHeight ( null ),
291 componentWidth,
292 componentHeight );
293
294 logger.info ( rectangle.toString ( ) );
295
296 if ( image != null )
297 {
298 offscreenGraphics2D.drawImage (
299 image,
300 rectangle.x,
301 rectangle.y,
302 rectangle.width,
303 rectangle.height,
304 null );
305 }
306 else
307 {
308 logger.info ( "null image" );
309 }
310
311 if ( show )
312 {
313 offscreenGraphics2D.setColor ( Color.GREEN );
314
315 offscreenGraphics2D.drawString ( imageFilename, 20, 20 );
316 }
317 }
318 else
319 {
320 logger.info ( "no images" );
321
322 offscreenGraphics2D.setColor ( Color.RED );
323
324 offscreenGraphics2D.drawString ( "no images", 20, 20 );
325 }
326
327 offscreenGraphics2D.dispose ( );
328
329 graphics.drawImage ( offscreenImage, 0, 0, null );
330 }
331
332 Thread.sleep ( FRAME_PERIOD );
333 }
334 catch ( final Throwable throwable )
335 {
336 throwable.printStackTrace ( );
337
338 logger.throwing ( getClass ( ).getName ( ), "paint", throwable );
339
340 graphics.setColor ( Color.RED );
341
342 graphics.fillRect ( 0, 0, Integer.MAX_VALUE, Integer.MAX_VALUE );
343
344 graphics.setColor ( Color.BLACK );
345
346 graphics.drawString ( throwable.getMessage ( ), 30, 30 );
347 }
348 }
349
350 //////////////////////////////////////////////////////////////////////
351 // private methods
352 //////////////////////////////////////////////////////////////////////
353
354 private String [ ] getImageFilenames ( )
355 //////////////////////////////////////////////////////////////////////
356 {
357 try
358 {
359 final String [ ] suffixes = ImageIO.getReaderFileSuffixes ( );
360
361 final String userHome = System.getProperty ( "user.home" );
362
363 if ( userHome == null )
364 {
365 return null;
366 }
367
368 final File homeDirectory = new File ( userHome );
369
370 if ( !homeDirectory.exists ( )
371 || !homeDirectory.isDirectory ( ) )
372 {
373 return null;
374 }
375
376 File picturesDirectory
377 = new File ( homeDirectory, "My Documents/My Pictures" );
378
379 if ( !picturesDirectory.exists ( )
380 || !picturesDirectory.isDirectory ( ) )
381 {
382 picturesDirectory = homeDirectory;
383 }
384
385 final Set<String> imageFilenameSet = new HashSet<String> ( );
386
387 final Stack<File> directoryStack = new Stack<File> ( );
388
389 directoryStack.add ( picturesDirectory );
390
391 File directory = null;
392
393 while ( !directoryStack.isEmpty ( ) )
394 {
395 directory = directoryStack.pop ( );
396
397 final String [ ] list = directory.list ( );
398
399 for ( String filename : list )
400 {
401 final File file = new File ( directory, filename );
402
403 if ( file.isDirectory ( ) )
404 {
405 directoryStack.add ( file );
406
407 continue;
408 }
409
410 filename = filename.toLowerCase ( );
411
412 for ( final String suffix : suffixes )
413 {
414 if ( filename.endsWith ( "." + suffix ) )
415 {
416 filename = file.getCanonicalPath ( );
417
418 imageFilenameSet.add ( filename );
419
420 break;
421 }
422 }
423 }
424 }
425
426 return imageFilenameSet.toArray ( new String [ 0 ] );
427 }
428 catch ( final Exception ex )
429 {
430 ex.printStackTrace ( );
431 }
432
433 return null;
434 }
435
436 private Object getPropertyValue (
437 final String propertyName,
438 final Map propertyMap )
439 //////////////////////////////////////////////////////////////////////
440 {
441 final ScreensaverContext screensaverContext = getContext ( );
442
443 final ScreensaverSettings screensaverSettings
444 = screensaverContext.getSettings ( );
445
446 String propertyValue
447 = screensaverSettings.getProperty ( propertyName );
448
449 if ( propertyValue == null )
450 {
451 return null;
452 }
453
454 propertyValue = propertyValue.trim ( ).toLowerCase ( );
455
456 return propertyMap.get ( propertyValue );
457 }
458
459 private static void initLoggingToFiles ( final Logger logger )
460 //////////////////////////////////////////////////////////////////////
461 {
462 try
463 {
464 final String userHome = System.getProperty ( "user.home" );
465
466 if ( userHome == null )
467 {
468 return;
469 }
470
471 final File homeDirectory = new File ( userHome );
472
473 if ( !homeDirectory.exists ( )
474 || !homeDirectory.isDirectory ( ) )
475 {
476 return;
477 }
478
479 final File logDirectory
480 = new File ( homeDirectory, ".croftsoft/savor" );
481
482 logDirectory.mkdirs ( );
483
484 final FileHandler fileHandler = new FileHandler (
485 "%h/.croftsoft/savor/savor%g.log",
486 10000,
487 2,
488 false );
489
490 Logger.getLogger ( "org.jdesktop.jdic.screensaver" ).addHandler (
491 fileHandler );
492
493 logger.addHandler ( fileHandler );
494 }
495 catch ( final Exception ex )
496 {
497 ex.printStackTrace ( );
498 }
499 }
500
501 //////////////////////////////////////////////////////////////////////
502 //////////////////////////////////////////////////////////////////////
503 }