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zhanghua

2024-09-26 c775c6953d9759e70f08acbfa8f6d7490aaae3d1

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package com.netsdk.demo.customize.surfaceEventDemo.frame.basic;
 
import javax.swing.*;
import java.awt.*;
import java.awt.image.BufferedImage;
 
/**
 * @author 47040
 * @since Created in 2021/5/12 19:37
 */
public class CanvasPanel extends JPanel {
 
    private BufferedImage image;
 
    public CanvasPanel() {
        super();
        setBackground(new Color(163, 163, 163));
        setForeground(new Color(0, 0, 0));
    }
 
    // 展示图片
    public void showCaptureOnPanel(BufferedImage bufferImg) {
        if(bufferImg==null){
            this.setOpaque(true);
            this.setImage(null);
        }else{
            this.setOpaque(false);
            this.setImage(bufferImg);
        }
        this.repaint();
    }
 
    private void setImage(BufferedImage image) {
        this.image = image;
    }
 
    @Override
    protected void paintComponent(Graphics g) {
        if (image != null) {
            //绘制图片与组件大小相同
            g.drawImage(image, 0, 0, getWidth(), getHeight(), this);
        }
        super.paintComponent(g);
    }
}