1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
|
package demoanimation
;
import java.awt.BorderLayout;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.KeyboardFocusManager;
import java.awt.Point;
import java.awt.Toolkit;
import java.awt.event.KeyEvent;
import java.awt.event.WindowAdapter;
import java.util.Timer;
import java.util.TimerTask;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.plaf.basic.BasicArrowButton;
public class DemoAnimationContinue extends JPanel {
private static final int SPEED = 5;
private final Image image;
private volatile Point location;
private volatile Point direction;
private final Timer timer = new Timer();
private final TimerTask timertask;
public DemoAnimationContinue(Image image) {
this.image=image;
this.location = new Point(0,0);
this.direction = new Point(0,0);
this.timertask = new TimerTask() {
@Override
public void run() {
moveImage();
}
};
}
public void startTimer() {
timer.scheduleAtFixedRate(timertask, 33, 33);
}
public void stopTimer() {
timertask.cancel();
}
public void resetLocation() {
System.out.println(image.getWidth(this));
int x=(getWidth()-image.getWidth(this))/2;
int y=(getHeight()-image.getHeight(this))/2;
direction = new Point(0,0);
location = new Point(x,y);
}
public void moveUp(int length) {
direction = new Point(direction.x,-length);
}
public void moveDown(int length) {
direction = new Point(direction.x,length);
}
public void moveRight(int length) {
direction = new Point(length,direction.y);
}
public void moveLeft(int length) {
direction = new Point(-length,direction.y);
}
private void moveImage() {
Point newLocation = new Point(location.x + direction.x, location.y + direction.y);
if ( newLocation.x+image.getWidth(this)>getWidth() ) {
newLocation.x = getWidth()-image.getWidth(this);
direction=new Point(-direction.x,direction.y);
}
if ( newLocation.x<0 ) {
newLocation.x = 0;
direction=new Point(-direction.x,direction.y);
}
if ( newLocation.y+image.getHeight(this)>getHeight() ) {
newLocation.y = getHeight()-image.getHeight(this);
direction=new Point(direction.x,-direction.y);
}
if ( newLocation.y<0 ) {
newLocation.y = 0;
direction=new Point(direction.x,-direction.x);
}
location = newLocation;
repaint();
}
@Override
public void paint(Graphics g) {
super.paint(g);
drawImage(g, location);
}
private void drawImage(Graphics g, Point location) {
g.drawImage(image, location.x, location.y, this);
}
public static void main(String[] args) {
run(new ImageIcon("ballon.gif").getImage());
}
public static void run(Image image) {
DemoAnimationContinue demoPanel = new DemoAnimationContinue(image);
JButton up = new BasicArrowButton(BasicArrowButton.NORTH);
up.addActionListener(e-> demoPanel.moveUp(SPEED));
JButton down = new BasicArrowButton(BasicArrowButton.SOUTH);
down.addActionListener(e-> demoPanel.moveDown(SPEED));
JButton right = new BasicArrowButton(BasicArrowButton.EAST);
right.addActionListener(e-> demoPanel.moveRight(SPEED));
JButton left = new BasicArrowButton(BasicArrowButton.WEST);
left.addActionListener(e-> demoPanel.moveLeft(SPEED));
KeyboardFocusManager.getCurrentKeyboardFocusManager().addKeyEventDispatcher(e-> {
switch(e.getKeyCode()) {
case KeyEvent.VK_RIGHT:
demoPanel.moveRight(SPEED);
return false;
case KeyEvent.VK_LEFT:
demoPanel.moveLeft(SPEED);
return false;
case KeyEvent.VK_UP:
demoPanel.moveUp(SPEED);
return false;
case KeyEvent.VK_DOWN:
demoPanel.moveDown(SPEED);
return false;
}
return true;
});
JFrame frame = new JFrame("Demo");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(demoPanel);
frame.add(up, BorderLayout.NORTH);
frame.add(left, BorderLayout.WEST);
frame.add(right, BorderLayout.EAST);
frame.add(down, BorderLayout.SOUTH);
frame.setSize(600, 400);
frame.setLocationRelativeTo(null);
frame.addWindowListener(new WindowAdapter() {
public void windowClosed(java.awt.event.WindowEvent e) {
demoPanel.stopTimer();
}
});
frame.setVisible(true);
demoPanel.resetLocation();
demoPanel.startTimer();
}
} |
Arrêter un Thread
Répondre avec citation
Envoyé par totot
, le Thread que tu y crées n'exécute pas du tout le Runnable où se trouve la boucle en question : donc de toute manière, ça ne fonctionnerait pas. Il faut bien sûr passer le Runnable au Thread pour que le thread l'exécute.
La plupart des réponses à vos questions sont déjà dans les 
Partager