package com.tur.demo;



import javax.swing.*;

import java.awt.*;

import java.awt.event.MouseAdapter;

import java.awt.event.MouseEvent;

import java.awt.geom.Rectangle2D;



public class Hello extends JPanel {

    private Rectangle2D imageBoundingRect; // 图像的矩形区

    private Point       mousePressedPos;   // 鼠标按下的位置

    private boolean     imageSelected = false; // 图像被选中



    private Image       image;



    public Hello() {

        imageBoundingRect = new Rectangle2D.Double(10, 10, 150, 150);

        mousePressedPos = new Point();

        image = new ImageIcon("/Users/Biao/Desktop/x.png").getImage();



        MyMouseAdapter ma = new MyMouseAdapter();

        addMouseListener(ma);

        addMouseMotionListener(ma);

    }



    @Override

    protected void paintComponent(Graphics g) {

        super.paintComponent(g);



        Graphics2D g2d = (Graphics2D) g;



        // 在此矩形框内绘制图像

        g2d.drawImage(image,

                      (int) imageBoundingRect.getX(),

                      (int) imageBoundingRect.getY(),

                      (int) imageBoundingRect.getWidth(),

                      (int) imageBoundingRect.getHeight(),

                      this);



        if (imageSelected) {

            // 图像被选中时高亮边框

            g2d.setColor(Color.RED);

            g2d.draw(imageBoundingRect);

        }

    }



    private static void createGuiAndShow() {