001 package com.croftsoft.apps.slideshow;
002
003 import java.awt.*;
004 import java.awt.event.*;
005 import java.io.*;
006 import java.util.*;
007 import java.util.logging.*;
008 import javax.imageio.*;
009 import javax.swing.JComponent;
010
011 import com.croftsoft.core.animation.ComponentAnimator;
012 import com.croftsoft.core.awt.image.ImageLib;
013 import com.croftsoft.core.lang.NullArgumentException;
014
015 /*********************************************************************
016 * ComponentAnimator.
017 *
018 * @version
019 * $Date: 2008/04/19 21:31:00 $
020 * @since
021 * 2005-08-12
022 * @author
023 * <a href="https://www.croftsoft.com/">David Wallace Croft</a>
024 *********************************************************************/
025
026 public final class SlideshowAnimator
027 implements ComponentAnimator
028 //////////////////////////////////////////////////////////////////////
029 //////////////////////////////////////////////////////////////////////
030 {
031
032 private static final String CLASS_NAME
033 = SlideshowAnimator.class.getName ( );
034
035 //
036
037 private final Logger logger;
038
039 private final SlideshowConfig slideshowConfig;
040
041 private final Rectangle componentBounds;
042
043 private final Random random;
044
045 //
046
047 private boolean skip;
048
049 private long lastTimeNanos;
050
051 private Image image;
052
053 private String imageFilename;
054
055 //////////////////////////////////////////////////////////////////////
056 // constructor methods
057 //////////////////////////////////////////////////////////////////////
058
059 /*********************************************************************
060 * Main constructor.
061 *********************************************************************/
062 public SlideshowAnimator (
063 final SlideshowConfig slideshowConfig,
064 final JComponent jComponent )
065 //////////////////////////////////////////////////////////////////////
066 {
067 NullArgumentException.checkArgs (
068 this.slideshowConfig = slideshowConfig,
069 jComponent );
070
071 logger = Logger.getLogger ( CLASS_NAME );
072
073 componentBounds = new Rectangle ( );
074
075 random = new Random ( );
076
077 jComponent.setOpaque ( true );
078
079 jComponent.setFont ( slideshowConfig.getFont ( ) );
080
081 jComponent.addKeyListener (
082 new KeyAdapter ( )
083 {
084 @Override
085 public void keyPressed ( final KeyEvent keyEvent )
086 {
087 final int keyCode = keyEvent.getKeyCode ( );
088
089 if ( keyCode == KeyEvent.VK_SPACE )
090 {
091 logger.info ( "spacebar pressed" );
092
093 skip = true;
094 }
095 }
096 } );
097
098 jComponent.requestFocus ( );
099 /*
100 jComponent.addComponentListener (
101 new ComponentAdapter ( )
102 {
103 @Override
104 public void componentResized ( ComponentEvent componentEvent )
105 {
106 update ( jComponent );
107
108 jComponent.repaint ( );
109 }
110 } );
111 */
112 update ( jComponent );
113 }
114
115 //////////////////////////////////////////////////////////////////////
116 // interface ComponentAnimator methods
117 //////////////////////////////////////////////////////////////////////
118
119 public void paint (
120 final JComponent jComponent,
121 final Graphics2D graphics2D )
122 //////////////////////////////////////////////////////////////////////
123 {
124 try
125 {
126 jComponent.getBounds ( componentBounds );
127
128 graphics2D.setColor ( slideshowConfig.getBackgroundColor ( ) );
129
130 graphics2D.fill ( componentBounds );
131
132 if ( image != null )
133 {
134 final Rectangle rectangle = ImageLib.shrinkToFitAndCenter (
135 image.getWidth ( null ),
136 image.getHeight ( null ),
137 componentBounds.width,
138 componentBounds.height );
139
140 // logger.info ( rectangle.toString ( ) );
141
142 graphics2D.drawImage (
143 image,
144 rectangle.x,
145 rectangle.y,
146 rectangle.width,
147 rectangle.height,
148 null );
149 }
150
151 if ( ( imageFilename != null )
152 && slideshowConfig.getDisplayImageFilename ( ) )
153 {
154 graphics2D.setColor ( slideshowConfig.getForegroundColor ( ) );
155
156 graphics2D.drawString ( imageFilename, 20, 20 );
157 }
158 }
159 catch ( final Exception ex )
160 {
161 ex.printStackTrace ( );
162
163 logger.throwing ( CLASS_NAME, "paint", ex );
164 }
165 }
166
167 public void update ( final JComponent jComponent )
168 //////////////////////////////////////////////////////////////////////
169 {
170 try
171 {
172 final long currentTimeNanos = System.nanoTime ( );
173
174 final long deltaTimeNanos = currentTimeNanos - lastTimeNanos;
175
176 final long displayTimeNanos
177 = slideshowConfig.getDisplayTimeNanos ( );
178
179 if ( skip
180 || ( deltaTimeNanos >= displayTimeNanos ) )
181 {
182 // logger.info ( "update changing image" );
183
184 skip = false;
185
186 final String [ ] imageFilenames
187 = slideshowConfig.getImageFilenames ( );
188
189 if ( ( imageFilenames != null )
190 && ( imageFilenames.length > 0 ) )
191 {
192 lastTimeNanos = currentTimeNanos;
193
194 final int imageIndex
195 = random.nextInt ( imageFilenames.length );
196
197 imageFilename = imageFilenames [ imageIndex ];
198
199 logger.info ( imageFilename );
200
201 final File imageFile = new File ( imageFilename );
202
203 image = ImageIO.read ( imageFile );
204 }
205 }
206
207 jComponent.paintImmediately ( componentBounds );
208 }
209 catch ( final Exception ex )
210 {
211 ex.printStackTrace ( );
212
213 logger.throwing ( CLASS_NAME, "update", ex );
214 }
215 }
216
217 //////////////////////////////////////////////////////////////////////
218 //////////////////////////////////////////////////////////////////////
219 }