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1 package JSci.instruments;
2
3 import java.awt.*;
4 import java.awt.event.*;
5 import java.awt.geom.*;
6
7
9
10 public class RectangularROI extends ROIAdapter {
11
12 private static final int LW = 3;
13 private int minx,maxx,miny,maxy;
14
15 public RectangularROI(int x0,int y0,int x1,int y1) {
16 minx=x0;
17 maxx=x1;
18 miny=y0;
19 maxy=y1;
20 }
21
22 public Shape getShape() {
23 return new Rectangle(minx,miny,maxx-minx+1,maxy-miny+1);
24 }
25
26 private Component comp = null;
27 public void setComponent(Component c) {
28 if (comp!=null) {
29 comp.removeMouseListener((MouseListener)this);
30 comp.removeMouseMotionListener((MouseMotionListener)this);
31 }
32 comp=c;
33 if (comp!=null) {
34 comp.addMouseListener((MouseListener)this);
35 comp.addMouseMotionListener((MouseMotionListener)this);
36 }
37 }
38
39 public void paint(Graphics g) {
40 g.setColor(Color.GREEN);
41 ((Graphics2D)g).draw(getShape());
42 }
43
44 private int region(Point p) {
45 if (p.x<minx || p.x>maxx || p.y<miny || p.y>maxy) return 0;
46 if (p.y<=miny+LW) {
47 if (p.x<=minx+LW) return 1;
48 if (p.x<maxx-LW) return 2;
49 return 3;
50 }
51 if (p.y<maxy-LW) {
52 if (p.x<=minx+LW) return 4;
53 if (p.x<maxx-LW) return 5;
54 return 6;
55 }
56 if (p.x<=minx+LW) return 7;
57 if (p.x<maxx-LW) return 8;
58 return 9;
59 }
60
61 private int state,iX,iY,vminx,vmaxx,vminy,vmaxy;
62
63 public void mousePressed(MouseEvent event) {
64 state = region(event.getPoint());
65 iX=event.getX();
66 iY=event.getY();
67 vminx=minx;
68 vmaxx=maxx;
69 vminy=miny;
70 vmaxy=maxy;
71 comp.repaint();
72 }
73
74 public void mouseReleased(MouseEvent event) {
75 state = 0;
76 }
77
78 public void mouseMoved(MouseEvent event) {
79 switch (region(event.getPoint())) {
80 case 0:comp.setCursor(Cursor.getDefaultCursor());break;
81 case 1:comp.setCursor(Cursor.getPredefinedCursor(Cursor.NW_RESIZE_CURSOR));break;
82 case 2:comp.setCursor(Cursor.getPredefinedCursor(Cursor.N_RESIZE_CURSOR));break;
83 case 3:comp.setCursor(Cursor.getPredefinedCursor(Cursor.NE_RESIZE_CURSOR));break;
84 case 4:comp.setCursor(Cursor.getPredefinedCursor(Cursor.W_RESIZE_CURSOR));break;
85 case 5:comp.setCursor(Cursor.getPredefinedCursor(Cursor.MOVE_CURSOR));break;
86 case 6:comp.setCursor(Cursor.getPredefinedCursor(Cursor.E_RESIZE_CURSOR));break;
87 case 7:comp.setCursor(Cursor.getPredefinedCursor(Cursor.SW_RESIZE_CURSOR));break;
88 case 8:comp.setCursor(Cursor.getPredefinedCursor(Cursor.S_RESIZE_CURSOR));break;
89 case 9:comp.setCursor(Cursor.getPredefinedCursor(Cursor.SE_RESIZE_CURSOR));break;
90 }
91 }
92
93 private int clip(int min,int x,int max) {
94 if (x<min) return min;
95 if (x>max) return max;
96 return x;
97 }
98
99 public void mouseDragged(MouseEvent event) {
100 int fX,fY,dX,dY;
101 fX=event.getX();
102 fY=event.getY();;
103 dX=fX-iX;
104 dY=fY-iY;
105 switch (state) {
106 case 0:
107 minx=Math.min(fX,iX);
108 maxx=Math.max(fX,iX);
109 miny=Math.min(fY,iY);
110 maxy=Math.max(fY,iY);
111 break;
112 case 1:
113 minx=clip(0,vminx+dX,maxx);
114 miny=clip(0,vminy+dY,maxy);
115 break;
116 case 2:
117 miny=clip(0,vminy+dY,maxy);
118 break;
119 case 3:
120 maxx=clip(minx,vmaxx+dX,comp.getWidth()-1);
121 miny=clip(0,vminy+dY,maxy);
122 break;
123 case 4:
124 minx=clip(0,vminx+dX,maxx);
125 break;
126 case 5:
127 if (vminx+dX<0) dX=-vminx;
128 if (vmaxx+dX>=comp.getWidth()) dX=comp.getWidth()-vmaxx-1;
129 if (vminy+dY<0) dY=-vminy;
130 if (vmaxy+dY>=comp.getHeight()) dY=comp.getHeight()-vmaxy-1;
131 minx=vminx+dX;
132 maxx=vmaxx+dX;
133 miny=vminy+dY;
134 maxy=vmaxy+dY;
135 break;
136 case 6:
137 maxx=clip(minx,vmaxx+dX,comp.getWidth()-1);
138 break;
139 case 7:
140 minx=clip(0,vminx+dX,maxx);
141 maxy=clip(miny,vmaxy+dY,comp.getHeight()-1);
142 break;
143 case 8:
144 maxy=clip(miny,vmaxy+dY,comp.getHeight()-1);
145 break;
146 case 9:
147 maxx=clip(minx,vmaxx+dX,comp.getWidth()-1);
148 maxy=clip(miny,vmaxy+dY,comp.getHeight()-1);
149 break;
150
151 }
152 comp.repaint();
153 }
154
155 }
156
157 |
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