|
1
7 package javax.swing.plaf.basic;
8
9 import java.awt.Dimension  ;
10 import java.awt.Graphics ;
11 import java.awt.Color ;
12
13 import javax.swing.*;
14 import javax.swing.plaf.UIResource ;
15
16
31 public class BasicArrowButton extends JButton implements SwingConstants
32 {
33 protected int direction;
34
35 private Color shadow;
36 private Color darkShadow;
37 private Color highlight;
38
39 public BasicArrowButton(int direction, Color background, Color shadow,
40 Color darkShadow, Color highlight) {
41 super();
42 setRequestFocusEnabled(false);
43 setDirection(direction);
44 setBackground(background);
45 this.shadow = shadow;
46 this.darkShadow = darkShadow;
47 this.highlight = highlight;
48 }
49
50 public BasicArrowButton(int direction) {
51 this(direction, UIManager.getColor("control"), UIManager.getColor("controlShadow"),
52 UIManager.getColor("controlDkShadow"), UIManager.getColor("controlLtHighlight"));
53 }
54
55 public int getDirection() { return direction; }
56
57 public void setDirection(int dir) { direction = dir; }
58
59 public void paint(Graphics g) {
60 Color origColor;
61 boolean isPressed, isEnabled;
62 int w, h, size;
63
64 w = getSize().width;
65 h = getSize().height;
66 origColor = g.getColor();
67 isPressed = getModel().isPressed();
68 isEnabled = isEnabled();
69
70 g.setColor(getBackground());
71 g.fillRect(1, 1, w-2, h-2);
72
73 if (getBorder() != null && !(getBorder() instanceof UIResource )) {
75 paintBorder(g);
76 } else if (isPressed) {
77 g.setColor(shadow);
78 g.drawRect(0, 0, w-1, h-1);
79 } else {
80 g.drawLine(0, 0, 0, h-1);
82 g.drawLine(1, 0, w-2, 0);
83
84 g.setColor(highlight); g.drawLine(1, 1, 1, h-3);
86 g.drawLine(2, 1, w-3, 1);
87
88 g.setColor(shadow); g.drawLine(1, h-2, w-2, h-2);
90 g.drawLine(w-2, 1, w-2, h-3);
91
92 g.setColor(darkShadow); g.drawLine(0, h-1, w-1, h-1);
94 g.drawLine(w-1, h-1, w-1, 0);
95 }
96
97 if(h < 5 || w < 5) {
99 g.setColor(origColor);
100 return;
101 }
102
103 if (isPressed) {
104 g.translate(1, 1);
105 }
106
107 size = Math.min((h - 4) / 3, (w - 4) / 3);
109 size = Math.max(size, 2);
110 paintTriangle(g, (w - size) / 2, (h - size) / 2,
111 size, direction, isEnabled);
112
113 if (isPressed) {
115 g.translate(-1, -1);
116 }
117 g.setColor(origColor);
118
119 }
120
121 public Dimension getPreferredSize() {
122 return new Dimension (16, 16);
123 }
124
125 public Dimension getMinimumSize() {
126 return new Dimension (5, 5);
127 }
128
129 public Dimension getMaximumSize() {
130 return new Dimension (Integer.MAX_VALUE, Integer.MAX_VALUE);
131 }
132
133 public boolean isFocusTraversable() {
134 return false;
135 }
136
137 public void paintTriangle(Graphics g, int x, int y, int size,
138 int direction, boolean isEnabled) {
139 Color oldColor = g.getColor();
140 int mid, i, j;
141
142 j = 0;
143 size = Math.max(size, 2);
144 mid = (size / 2) - 1;
145
146 g.translate(x, y);
147 if(isEnabled)
148 g.setColor(darkShadow);
149 else
150 g.setColor(shadow);
151
152 switch(direction) {
153 case NORTH:
154 for(i = 0; i < size; i++) {
155 g.drawLine(mid-i, i, mid+i, i);
156 }
157 if(!isEnabled) {
158 g.setColor(highlight);
159 g.drawLine(mid-i+2, i, mid+i, i);
160 }
161 break;
162 case SOUTH:
163 if(!isEnabled) {
164 g.translate(1, 1);
165 g.setColor(highlight);
166 for(i = size-1; i >= 0; i--) {
167 g.drawLine(mid-i, j, mid+i, j);
168 j++;
169 }
170 g.translate(-1, -1);
171 g.setColor(shadow);
172 }
173
174 j = 0;
175 for(i = size-1; i >= 0; i--) {
176 g.drawLine(mid-i, j, mid+i, j);
177 j++;
178 }
179 break;
180 case WEST:
181 for(i = 0; i < size; i++) {
182 g.drawLine(i, mid-i, i, mid+i);
183 }
184 if(!isEnabled) {
185 g.setColor(highlight);
186 g.drawLine(i, mid-i+2, i, mid+i);
187 }
188 break;
189 case EAST:
190 if(!isEnabled) {
191 g.translate(1, 1);
192 g.setColor(highlight);
193 for(i = size-1; i >= 0; i--) {
194 g.drawLine(j, mid-i, j, mid+i);
195 j++;
196 }
197 g.translate(-1, -1);
198 g.setColor(shadow);
199 }
200
201 j = 0;
202 for(i = size-1; i >= 0; i--) {
203 g.drawLine(j, mid-i, j, mid+i);
204 j++;
205 }
206 break;
207 }
208 g.translate(-x, -y);
209 g.setColor(oldColor);
210 }
211
212 }
213
214 |
Popular Tags |
Java API By Example, From Geeks To Geeks.