|
1 package demo.notification.whiteboard;
2
3
4
5 import java.awt.Canvas  ;
6
7 import java.awt.image.ImageProducer ;
8
9 import java.awt.event.MouseAdapter ;
10
11 import java.awt.event.MouseEvent ;
12
13 import java.awt.event.MouseMotionAdapter ;
14
15 import java.awt.Graphics ;
16
17
18
19 public class BrushSizeDrawCanvas extends Canvas {
20
21
22
23 WorkgroupController controller_;
24
25 ImageProducer imageProducer_;
26
27
28
29
31 private int lastX,lastY;
32
33
34
35
37 private int drawRed=255;
38
39 private int drawGreen=255;
40
41 private int drawBlue=255;
42
43
44
45 public BrushSizeDrawCanvas(WorkgroupController controller, int width, int height) {
46
47 super();
48
49 setSize(width,height);
50
51 controller_ = controller;
52
53 initialize();
54
55 }
56
57
58
59 public void initialize() {
60
61 imageProducer_ = controller_.getImage().getProducer();
62
63
64
65
67 addMouseListener(new MouseAdapter () {
68
69 public void mousePressed(MouseEvent e) {
70
71 lastX = e.getX();
72
73 lastY = e.getY();
74
75 }
76
77 });
78
79
80
81
83 addMouseMotionListener(new MouseMotionAdapter () {
84
85 public void mouseDragged(MouseEvent e) {
86
87 controller_.drawLine(lastX,lastY,
88
89 e.getX(),e.getY(),
90
91 drawRed,drawGreen,drawBlue);
92
93 lastX = e.getX();
94
95 lastY = e.getY();
96
97 repaint();
98
99 }
100
101 });
102
103 }
104
105
106
107 public void paint(Graphics g){
108
109 g.drawImage(createImage(imageProducer_), 0, 0, null);
110
111 }
112
113
114
115 public void update(Graphics g){
116
117 paint(g);
118
119 }
120
121
122
123 void setDrawColor(int red,int green,int blue) {
124
125 drawRed=red;
126
127 drawGreen=green;
128
129 drawBlue=blue;
130
131 }
132
133
134
135 public void clearAll() {
136
137 controller_.clearAll();
138
139 repaint();
140
141 }
142
143
144
145 void setBrushSize(int size) {
146
147 controller_.setBrushSize(size);
148
149 }
150
151 }
152
153 |
Popular Tags |
Java API By Example, From Geeks To Geeks.