paintframe.java

来自「该五子棋是用java swing做的 功能简单 可以两个人同时玩的游戏」· Java 代码 · 共 88 行

package com.imti.gui;

import java.awt.Color;
import java.awt.Graphics;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;

import javax.swing.JFrame;

public class PaintFrame extends JFrame implements MouseListener{
	private int x = -1;
	private int y = -1;
	private boolean init = false;
	private boolean color = true;
	//constructor
	public PaintFrame(){
		this.addMouseListener(this);
		this.setSize(300,300);
		this.setVisible(true);
	}
	//overridding
	public void paint(Graphics g){
		if(!init){
			paintBackGround(g);
		}
		if(color){
			g.setColor(Color.white);
		}else{
			g.setColor(Color.black);
		}
		color=!color;
		int tempX = -1;
		int tempY = -1;
		for(int i = 50;i <= 250;i +=10) {
			if(Math.abs(x-i)<=5){
				tempX = i;
			}
			if(Math.abs(y-i)<=5){
				tempY = i;
			}
		}
		g.fillOval(tempX-5, tempY-5, 10, 10);
		
		
	}
	
	public void paintBackGround(Graphics g){
		g.setColor(Color.lightGray);
		g.fillRect(0, 0, 400, 300);
		g.setColor(Color.black);

		for(int i = 50;i <= 250;i +=10) {
			g.drawLine(50,i,250,i);
			g.drawLine(i,50,i,250);
		}	
		init = true;
	}
	
	@Override
	public void mouseClicked(MouseEvent e) {
		// TODO Auto-generated method stub
		
	}
	@Override
	public void mouseEntered(MouseEvent e) {
		// TODO Auto-generated method stub
		
	}
	@Override
	public void mouseExited(MouseEvent e) {
		// TODO Auto-generated method stub
		
	}
	@Override
	public void mousePressed(MouseEvent e) {
		x = e.getX();
		y = e.getY();
		if(x<=250&&x>=50&&y<=250&&y>=50){
			repaint();
		}
	}
	@Override
	public void mouseReleased(MouseEvent e) {
		// TODO Auto-generated method stub
		
	}
}