1    package gui.layouts; 
2     
3    import java.awt.*; 
4     
5    // original code by Maynard Marquis 
6    // hacked by DL. 
7     
8    public class BoundableComponentPlacement 
9            implements BoundableInterface { 
10    
11       public int position = Alignable.NORTHWEST; 
12    
13       public void setBounds(Component c, int x, int y, int w, int h) { 
14           Dimension preferredSize = c.getPreferredSize(); 
15           Dimension cellSize = new Dimension(w, h); 
16           Dimension newSize = min(cellSize, preferredSize); 
17           if (newSize.equals(cellSize)) { 
18               c.setBounds(x, y, cellSize.width, cellSize.height); 
19               return; 
20           } 
21           if (c instanceof Alignable) { 
22               Alignable a = (Alignable) c; 
23               position = a.getAlignment(); 
24           } 
25           Point dp = getPosition(new Point(x, y), newSize, cellSize); 
26           c.setBounds(dp.x, dp.y, newSize.width, newSize.height); 
27       } 
28    
29       public Dimension min(Dimension d1, Dimension d2) { 
30           if (d1.width < d2.width) return d1; 
31           if (d1.height < d2.height) return d1; 
32           return d2; 
33       } 
34    
35       public Point getPosition(Point startPoint, 
36                                Dimension newSize, 
37                                Dimension cellSize) { 
38    
39           int west = startPoint.x; 
40           int east = startPoint.x + cellSize.width - newSize.width; 
41           int centerX = startPoint.x + cellSize.width / 2 - newSize.width / 2; 
42    
43           int north = startPoint.y; 
44           int south = startPoint.y + cellSize.height - newSize.height; 
45           int centerY = startPoint.y + cellSize.height / 2 - newSize.height / 2; 
46    
47    
48           switch (position) { 
49               case Alignable.NORTHWEST: 
50                   return new Point(west, north); 
51               case Alignable.NORTH: 
52                   return new Point(centerX, north); 
53               case Alignable.NORTHEAST: 
54                   return new Point(east, north); 
55               case Alignable.EAST: 
56                   return new Point(east, centerY); 
57               case Alignable.SOUTHEAST: 
58                   return new Point(east, south); 
59               case Alignable.SOUTH: 
60                   return new Point(centerX, south); 
61               case Alignable.SOUTHWEST: 
62                   return new Point(west, south); 
63               case Alignable.WEST: 
64                   return new Point(west, centerY); 
65               case Alignable.CENTER: 
66                   return new Point(centerX, centerY); 
67           } 
68           return new Point(centerX, centerY); 
69       } 
70   } 
71