图标Icon（Icon）

Posted 2021-05-25 逆骨111

package cn.rushangw.lesson04;

import javax.swing.*;
import java.awt.*;

//图标是一个接口 需要实现接口 图标写在窗口里  所以需要继承Frame
public class IconDemo extends JFrame implements Icon {
    private int width;
    private int height;

    public IconDemo(){}

    public IconDemo(int width, int height) {
        this.width = width;
        this.height = height;
    }

    public void init(){
        IconDemo iconDemo = new IconDemo(15, 15);
        JLabel jLabel = new JLabel("icontest", iconDemo, SwingConstants.CENTER);
        Container container = getContentPane();
        container.add(jLabel);
        setVisible(true);
        setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    }

    public static void main(String[] args) {
        new IconDemo().init();
    }

    @Override
    public void paintIcon(Component c, Graphics g, int x, int y) {
        g.fillOval(x,y,width,height);
    }

    @Override
    public int getIconWidth() {
        return this.width;
    }

    @Override
    public int getIconHeight() {
        return this.height;
    }
}