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1
4 package com.tc.admin.common;
5
6 import java.awt.Color  ;
7 import java.awt.Component ;
8 import java.awt.Graphics ;
9
10 import javax.swing.Icon ;
11 import javax.swing.SwingConstants ;
12 import javax.swing.UIManager ;
13
14 public class ArrowIcon implements Icon , SwingConstants {
15 private int direction;
16 private Color shadow;
17
18 public ArrowIcon(int direction, Color shadow) {
19 setDirection(direction);
20 this.shadow = shadow;
21 }
22
23 public ArrowIcon() {
24 this(SOUTH);
25 }
26
27 public ArrowIcon(int direction) {
28 this(direction, UIManager.getColor("controlShadow"));
29 }
30
31 public int getDirection() {
32 return direction;
33 }
34
35 public void setDirection(int dir) {
36 direction = dir;
37 }
38
39 public int getIconWidth() {
40 return 12;
41 }
42
43 public int getIconHeight() {
44 return 12;
45 }
46
47 public void paintIcon(Component c, Graphics g, int x, int y) {
48 int w = getIconWidth();
49 int h = getIconHeight();
50
51 int size = Math.max(Math.min(h/3, w/3), 2);
52
53 paintTriangle(g, x+(w-size)/2, y+(h-size)/2, size);
54 }
55
56 public void paintTriangle(Graphics g, int x, int y, int size) {
57 Color oldColor = g.getColor();
58 int mid = (size/2)-1;
59 int j = 0;
60 int i;
61
62 g.translate(x, y);
63 g.setColor(shadow);
64
65 switch(direction) {
66 case NORTH:
67 for(i = 0; i < size; i++) {
68 g.drawLine(mid-i, i, mid+i, i);
69 }
70 break;
71 case SOUTH:
72 j = 0;
73 for(i = size-1; i >= 0; i--) {
74 g.drawLine(mid-i, j, mid+i, j);
75 j++;
76 }
77 break;
78 case WEST:
79 for(i = 0; i < size; i++) {
80 g.drawLine(i, mid-i, i, mid+i);
81 }
82 break;
83 case EAST:
84 j = 0;
85 for(i = size-1; i >= 0; i--) {
86 g.drawLine(j, mid-i, j, mid+i);
87 j++;
88 }
89 break;
90 }
91
92 g.translate(-x, -y);
93 g.setColor(oldColor);
94 }
95 }
96 |
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