001 package com.croftsoft.apps.rainbow;
002
003 import java.awt.*;
004 import java.awt.event.*;
005 import java.util.*;
006 import javax.swing.*;
007 import javax.swing.event.*;
008
009 import com.croftsoft.core.CroftSoftConstants;
010 import com.croftsoft.core.animation.AnimatedComponent;
011 import com.croftsoft.core.animation.ComponentAnimator;
012 import com.croftsoft.core.animation.collector.SimpleRepaintCollector;
013 import com.croftsoft.core.animation.factory.DefaultAnimationFactory;
014 import com.croftsoft.core.gui.FrameLib;
015 import com.croftsoft.core.lang.ClassLib;
016 import com.croftsoft.core.lang.lifecycle.Lifecycle;
017
018 /*********************************************************************
019 * Main Rainbow class.
020 *
021 * @version
022 * 2003-07-23
023 * @since
024 * 2002-03-18
025 * @author
026 * <a href="https://www.croftsoft.com/">David Wallace Croft</a>
027 *********************************************************************/
028
029 public final class Rainbow
030 extends JApplet
031 implements ComponentAnimator, Lifecycle
032 //////////////////////////////////////////////////////////////////////
033 //////////////////////////////////////////////////////////////////////
034 {
035
036 //////////////////////////////////////////////////////////////////////
037 // Applet constants
038 //////////////////////////////////////////////////////////////////////
039
040 private static final String VERSION
041 = "2003-07-23";
042
043 private static final String TITLE
044 = "CroftSoft Rainbow";
045
046 private static final String INFO
047 = "\n" + TITLE + "\n"
048 + CroftSoftConstants.COPYRIGHT + "\n"
049 + CroftSoftConstants.HOME_PAGE + "\n"
050 + "Version " + VERSION + "\n";
051
052 //////////////////////////////////////////////////////////////////////
053 // Frame constants
054 //////////////////////////////////////////////////////////////////////
055
056 private static final String FRAME_TITLE
057 = TITLE;
058
059 private static final String FRAME_ICON_FILENAME
060 = "/images/croftsoft.png";
061
062 private static final Dimension FRAME_SIZE
063 = null;
064
065 private static final String SHUTDOWN_CONFIRMATION_PROMPT
066 = "Close " + TITLE + "?";
067
068 //////////////////////////////////////////////////////////////////////
069 // animation constants
070 //////////////////////////////////////////////////////////////////////
071
072 private static final double FRAME_RATE = 100.0;
073
074 private static final int COLOR_WIDTH = 64;
075
076 private static final int COLOR_HEIGHT = 64;
077
078 private static final Color BACKGROUND_COLOR = Color.WHITE;
079
080 //////////////////////////////////////////////////////////////////////
081 // instance variables
082 //////////////////////////////////////////////////////////////////////
083
084 private AnimatedComponent animatedComponent;
085
086 private Random random;
087
088 private Color color;
089
090 private int x;
091
092 private int y;
093
094 private Point mousePoint;
095
096 //////////////////////////////////////////////////////////////////////
097 //////////////////////////////////////////////////////////////////////
098
099 public static void main ( String [ ] args )
100 //////////////////////////////////////////////////////////////////////
101 {
102 JFrame jFrame = new JFrame ( FRAME_TITLE );
103
104 try
105 {
106 jFrame.setIconImage ( ClassLib.getResourceAsImage (
107 Rainbow.class, FRAME_ICON_FILENAME ) );
108 }
109 catch ( Exception ex )
110 {
111 }
112
113 Rainbow rainbow = new Rainbow ( );
114
115 jFrame.setContentPane ( rainbow );
116
117 FrameLib.launchJFrameAsDesktopApp (
118 jFrame,
119 new Lifecycle [ ] { rainbow },
120 FRAME_SIZE,
121 SHUTDOWN_CONFIRMATION_PROMPT );
122 }
123
124 //////////////////////////////////////////////////////////////////////
125 //////////////////////////////////////////////////////////////////////
126
127 public String getAppletInfo ( )
128 //////////////////////////////////////////////////////////////////////
129 {
130 return INFO;
131 }
132
133 //////////////////////////////////////////////////////////////////////
134 // interface Lifecycle methods
135 //////////////////////////////////////////////////////////////////////
136
137 public void init ( )
138 //////////////////////////////////////////////////////////////////////
139 {
140 System.out.println ( INFO );
141
142 animatedComponent = new AnimatedComponent (
143 this,
144 new SimpleRepaintCollector ( ),
145 DefaultAnimationFactory.INSTANCE.createLoopGovernor (
146 FRAME_RATE ) );
147
148 Container contentPane = getContentPane ( );
149
150 contentPane.setLayout ( new BorderLayout ( ) );
151
152 contentPane.add ( animatedComponent, BorderLayout.CENTER );
153
154 animatedComponent.init ( );
155
156 color = Color.WHITE;
157
158 animatedComponent.addMouseMotionListener (
159 new MouseMotionAdapter ( )
160 {
161 public void mouseMoved ( MouseEvent mouseEvent )
162 {
163 mousePoint = mouseEvent.getPoint ( );
164 }
165 } );
166
167 animatedComponent.addMouseListener (
168 new MouseAdapter ( )
169 {
170 public void mouseExited ( MouseEvent mouseEvent )
171 {
172 mousePoint = null;
173 }
174
175 public void mousePressed ( MouseEvent mouseEvent )
176 {
177 repaint ( );
178 }
179 } );
180
181 animatedComponent.setCursor (
182 new Cursor ( Cursor.CROSSHAIR_CURSOR ) );
183
184 random = new Random ( );
185 }
186
187 public void start ( ) { animatedComponent.start ( ); }
188
189 public void stop ( ) { animatedComponent.stop ( ); }
190
191 public void destroy ( ) { animatedComponent.destroy ( ); }
192
193 //////////////////////////////////////////////////////////////////////
194 // interface ComponentAnimator methods
195 //////////////////////////////////////////////////////////////////////
196
197 public void update ( JComponent component )
198 //////////////////////////////////////////////////////////////////////
199 {
200 Point mousePoint = this.mousePoint;
201
202 if ( mousePoint != null )
203 {
204 color = new Color (
205 random.nextInt ( 256 ),
206 random.nextInt ( 256 ),
207 random.nextInt ( 256 ) );
208
209 x = mousePoint.x - COLOR_WIDTH / 2;
210
211 y = mousePoint.y - COLOR_HEIGHT / 2;
212
213 component.repaint ( x, y, COLOR_WIDTH, COLOR_HEIGHT );
214 }
215 else
216 {
217 x = Integer.MIN_VALUE;
218 }
219 }
220
221 public void paint (
222 JComponent component,
223 Graphics2D graphics )
224 //////////////////////////////////////////////////////////////////////
225 {
226 graphics.setColor ( BACKGROUND_COLOR );
227
228 graphics.fillRect (
229 0, 0, component.getWidth ( ), component.getHeight ( ) );
230
231 graphics.setColor ( color );
232
233 graphics.fillRect ( x, y, COLOR_WIDTH, COLOR_HEIGHT );
234 }
235
236 //////////////////////////////////////////////////////////////////////
237 //////////////////////////////////////////////////////////////////////
238 }