1    package j2d.rotator; 
2     
3    import javax.swing.*; 
4    import java.awt.geom.AffineTransform; 
5    import java.awt.geom.Point2D; 
6    import java.beans.PropertyChangeListener; 
7    import java.beans.PropertyChangeSupport; 
8     
9    /** 
10    * Copyright DocJava, inc. User: lyon 
11    * <p/> 
12    * Date: Dec 10, 2004 
13    * <p/> 
14    * Time: 6:26:35 PM 
15    */ 
16   public class AffineBean { 
17       private JLabel[] sliderLabels = new JLabel[]{new JLabel("Translate X"), 
18                                          new JLabel("Translate Y"), 
19                                          new JLabel("Rotate"), 
20                                          new JLabel("Scale X"), 
21                                          new JLabel("Scale Y"), 
22                                          new JLabel("Shear X"), 
23                                          new JLabel("Shear Y")}; 
24    
25       private Point2D scale = new Point2D.Double(1.0, 1.0); 
26       private Point2D shear = new Point2D.Double(0, 0); 
27       private double theta = 0; 
28       private PropertyChangeSupport pcs = new PropertyChangeSupport(this); 
29    
30       // The listener list wrapper methods 
31       public synchronized void addPropertyChangeListener( 
32               PropertyChangeListener pcl) { 
33           pcs.addPropertyChangeListener(pcl); 
34       } 
35    
36    
37       public AffineTransform getOperation() { 
38           AffineTransform at = new AffineTransform(); 
39    
40           for (int i = 0; i < 7; i++) { 
41               final JLabel sl = sliderLabels[i]; 
42               if (sl.getText() == 
43                       "Rotate") 
44                   at.rotate(theta * Math.PI / 180); 
45               if (sl.getText() == 
46                       "Scale X") 
47                   at.scale(scale.getX(), 1); 
48               if (sl.getText() == 
49                       "Scale Y") 
50                   at.scale(1, scale.getY()); 
51               if (sl.getText() == 
52                       "Shear X") 
53                   at.shear(shear.getX(), 0); 
54               if (sl.getText() == 
55                       "Shear Y") 
56                   at.shear(0, shear.getY()); 
57           } 
58    
59           return at; 
60       } 
61    
62       public JLabel[] getSliderLabels() { 
63           return sliderLabels; 
64       } 
65    
66       public Point2D getScale() { 
67           return scale; 
68       } 
69    
70       public void setScale(Point2D scale) { 
71           this.scale = scale; 
72           pcs.firePropertyChange("AffineTransform", null, getOperation()); 
73       } 
74    
75       public Point2D getShear() { 
76           return shear; 
77       } 
78    
79       public void setShear(Point2D shear) { 
80           this.shear = shear; 
81           pcs.firePropertyChange("AffineTransform", null, getOperation()); 
82       } 
83    
84       public double getTheta() { 
85           return theta; 
86    
87       } 
88    
89       public void setTheta(double theta) { 
90           this.theta = theta; 
91           pcs.firePropertyChange("AffineTransform", null, getOperation()); 
92       } 
93   } 
94