您好,在此先感谢, 我与Graphics2D的工作赌场游戏(轮盘),所以我试图添加动态赌场(钱)的芯片,所以,我现在用的mouseDragged事件,并作为测试我与仅1椭圆工作。
下面的代码
package roulette;
import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Point;
import java.awt.Shape;
import java.awt.Stroke;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.geom.Ellipse2D;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Random;
import javax.swing.JPanel;
import javax.swing.Timer;
public class RouletteInterface extends JPanel{
private List<Shape> money = new ArrayList<>();
public RouletteInterface() {
createEllipseGrap();
}
@Override
public Dimension getPreferredSize() {
return new Dimension(300, 300);
}
@Override
protected void paintComponent(Graphics g) {
super.paintComponent(g);
Graphics2D g4d = (Graphics2D) g.create();
paintEllipseGrap(g4d, g);
g4d.dispose();
}
protected void createEllipseGrap() {
Ellipse2D elipse = new Ellipse2D.Double(100, 100, 30, 30);
money.add(elipse);
addMouseListener(new moneyMouseListener());
addMouseMotionListener(new moneyMouseListener());
}
protected void paintEllipseGrap(Graphics2D g3d, Graphics g) {
g3d.setColor(Color.BLUE);
g3d.fill(money.get(0));
}
private class moneyMouseListener extends MouseAdapter {
int dragging;
private int x;
private int y;
@Override
public void mousePressed(MouseEvent e) {
if(money.get(0).contains(e.getPoint())) {
x = e.getX();
y = e.getY();
dragging = 0;
} else {
return ;
}
}
@Override
public void mouseDragged(MouseEvent e) {
if(dragging == 0) {
x = e.getX();
y = e.getY();
Ellipse2D elipse = new Ellipse2D.Double(x, y, 30, 30);
money.set(0, elipse);
repaint();
} else {
}
}
@Override
public void mouseReleased(MouseEvent m) {
dragging = 1;
repaint();
}
}
}
public class principal{
public static void main(String[] args) {
new principal();
}
public principal() {
JFrame frame = new JFrame();
frame.add(new RouletteInterface());
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
}
有什么问题? 该事件的mouseDragged仍然射击即使我松开鼠标点击,所以圆仍与我的光标移动当我点击并拖动窗口的另一侧
你的问题是,您要添加的moneyMouseListeners为的MouseListener和的MouseMotionListener的两个不同的实例:
addMouseListener(new moneyMouseListener());
addMouseMotionListener(new moneyMouseListener());
你将不得不那样做:
moneyMouseListener mListener = new moneyMouseListener();
addMouseListener(mListener);
addMouseMotionListener(mListener);
PS:当使用像你的“拖”变量一个变量,它只是用来分配一个“1”或“0”,你应该使用一个布尔变量为“真”与“假”;)
此外,你可能要考虑绘图/ undrawing使用图形的XOR模式的芯片,而不是调用重绘()所有的时间。
这样,如果你在后台的东西动芯片(或对另一芯片)不损坏其他芯片或背景。