mili_admin/src/main/java/com/ygj/yuemum/service/global/CreatePOPService.java

package com.ygj.yuemum.service.global;

import com.ygj.yuemum.component.Constant;
import org.apache.commons.io.FileUtils;
import org.apache.commons.lang.StringUtils;
import org.springframework.stereotype.Service;

import javax.imageio.ImageIO;
import javax.imageio.ImageReadParam;
import javax.imageio.ImageReader;
import javax.imageio.stream.ImageInputStream;
import javax.swing.*;
import java.awt.*;
import java.awt.geom.AffineTransform;
import java.awt.image.BufferedImage;
import java.io.*;
import java.util.ArrayList;
import java.util.Iterator;

@Service
public class CreatePOPService {

    public static final String LOCALQRCODE = Constant.LOCALQRCODE;
    public static final String DEMOQRCODE = Constant.DEMOQRCODE;
    public static final String HTTPOPPQRCODE = Constant.HTTPOPPQRCODE;
    public static final String HTTTESTQRCODE = Constant.HTTTESTQRCODE;
    public static final String TESTQRCODE = Constant.TESTQRCODE;

    public String CreateTestShare(String qrcode,String testImg,Integer score,String openid) throws IOException {
        File qrCodeImg = new File(LOCALQRCODE+"/"+qrcode);
        File fileBg = new File(TESTQRCODE+"/"+testImg);
        FileInputStream fis = new FileInputStream(fileBg);
        ImageIcon imageIcon = new ImageIcon(TESTQRCODE+"/"+testImg);
        int iconWidth = imageIcon.getIconWidth();
        int iconHeight = imageIcon.getIconHeight() -200;

        ImageInputStream iis = ImageIO.createImageInputStream(fileBg);
        Iterator<ImageReader> it = ImageIO.getImageReaders(iis);
        ImageReader r = it.next();
        r.setInput(iis, true);
        ImageReadParam param = r.getDefaultReadParam();
        Rectangle rect = new Rectangle(0, 0, iconWidth, iconHeight);
        param.setSourceRegion(rect);
        BufferedImage bufferedImage = r.read(0, param);
        Graphics2D g = bufferedImage.createGraphics();
        g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
        g.drawImage(bufferedImage.getScaledInstance(iconWidth, iconHeight, Image.SCALE_SMOOTH), 0, 0, null);
        g.drawImage(ImageIO.read(qrCodeImg), 100, iconHeight-300, 200, 200, null);

        Graphics2D g2 = (Graphics2D) g;
        Graphics2D g3 = (Graphics2D) g;
        int scorex = 0;
        int fenx = 0;
        if(score == 100) {
            scorex = 700;
            fenx = 890;
        } else {
            scorex = 750;
            fenx = 860;
        }
        Font rewardFirstFont = new Font("DejaVuLGCSansMono", Font.BOLD, 130);
        AffineTransform affineTransform = new AffineTransform();
        affineTransform.rotate(Math.toRadians(15), 0, 0);
        Font rotatedFont = rewardFirstFont.deriveFont(affineTransform);
        g2.setColor(Color.decode("#F50000"));
        g2.setFont(rotatedFont);
        g2.drawString(String.valueOf(score),scorex,50);

        Font rewardLastFont = new Font("DejaVuLGCSansMono", Font.CENTER_BASELINE, 80);
        AffineTransform affineTransform2 = new AffineTransform();
        affineTransform2.rotate(Math.toRadians(15), 0, 0);
        Font rotatedFont2 = rewardLastFont.deriveFont(affineTransform);
        g3.setFont(rotatedFont2);
        g3.setColor(Color.decode("#F50000"));
        g3.drawString("分",fenx,280);



        g.dispose();
        g2.dispose();
        g3.dispose();
        ByteArrayOutputStream os = new ByteArrayOutputStream();
        ImageIO.write(bufferedImage, "jpg", os);
        //保存为图片文件
        FileUtils.writeByteArrayToFile(new File(TESTQRCODE+"/dc/"+openid+".jpg"), os.toByteArray());
        //10、关闭输入输出流
        fis.close();
        os.close();
        return HTTTESTQRCODE+"/"+openid+".jpg";
    }

    public String CreatePOP( String wv_phone) throws Exception {
        //宠物图片文件
//        File petImg = new File(iconPath);
        //二维码图片文件 1
        File qrCodeImg = new File (LOCALQRCODE+"/"+wv_phone+".png");
        //背景地址
        //为了方便演示放在resources中，可根据实际情况（上传后）将背景模板放入单独的资源文件夹或远程资源服务器

        File fileBg = new File(DEMOQRCODE+"/demo.jpg");
        //1、背景图片输入流
        FileInputStream fis = new FileInputStream(fileBg);
        //2、背景图片对象
        Image srcImg = ImageIO.read(fis);
        //3、创建画布，根据背景图片的宽高
        BufferedImage bufferedImage = new BufferedImage(
                //宽度
                srcImg.getWidth(null),
                //高度
                srcImg.getHeight(null),
                //图片类型
                BufferedImage.TYPE_INT_RGB);
        int width = bufferedImage.getWidth();
        int height = bufferedImage.getHeight();
        //4、得到2d画笔对象
        Graphics2D g = bufferedImage.createGraphics();
        // 设置对线段的锯齿状边缘处理
        g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
        //5、设置画布背景
        g.drawImage(srcImg.getScaledInstance(width, height, Image.SCALE_SMOOTH), 0, 0, null);
        //6、```````````开始作画```````````
//        Font rewardFirstFont = new Font("PingFang SC Bold", Font.PLAIN, 24);
//        Font rewardLastFont = new Font("PingFang SC Bold", Font.PLAIN, 48);
//        int rewardFirstWidth = getStringWidth(g, rewardFirstFont, "赏金￥");
//        int rewardLastWidth = getStringWidth(g, rewardLastFont, "100");
        //赏金内容
//        drawString(g, Color.decode("#ffd434"), rewardFirstFont, "赏金￥", (width - rewardFirstWidth - rewardLastWidth) / 2, 550);
//        drawString(g, Color.decode("#ffd434"), rewardLastFont, "100", (width - rewardLastWidth + rewardFirstWidth) / 2, 550);
//        //标题
//        drawString(g, Color.decode("#323232"), new Font("PingFang SC Bold", Font.BOLD, 34), title, 0, 400, width, 12, 5, true);
//        //把宠物图片和二维码图片划入背景
//        g.drawImage(ImageIO.read(petImg), 130, 90, 362, 250, null);
        g.drawImage(ImageIO.read(qrCodeImg), 430, height-278, 220, 220, null);
        //   ```````````结束作画```````````
        //7、处理画作
        g.dispose();
        //8、得到输出流
        ByteArrayOutputStream os = new ByteArrayOutputStream();
        ImageIO.write(bufferedImage, "jpg", os);
        //9、转成base64编码前端可以直接显示，也可转换成其它形式比如文件
//        String encodeStr = Base64.getEncoder().encodeToString(os.toByteArray());
        //保存为图片文件
        FileUtils.writeByteArrayToFile(new File(DEMOQRCODE+"/"+wv_phone+".jpg"), os.toByteArray());
        //10、关闭输入输出流
        fis.close();
        os.close();
//        qrCodeImg.delete();
//        petImg.delete();
        return HTTPOPPQRCODE+"/"+wv_phone+".jpg";

    }


    public static void drawString(Graphics2D g, Color color, Font font, String content, float x, float y) {
        g.setColor(color);
        g.setFont(font);
//        g.rotate(30f);//倾斜？
        g.drawString(content, x, y);
    }
    public static void drawString(Graphics2D g, Color color, Font font, String content, float x, float y, int width, int lineWordNum, int linePadding, boolean center) {
        int num = content.length();

        java.util.List<String> contents = new ArrayList<>();
        if (num <= lineWordNum) {

            contents.add(content);
        } else {
            for (int i = 0; i < num; i += lineWordNum) {
                contents.add(StringUtils.substring(content, i, i + lineWordNum));
            }

        }
        for (int i = 0; i < contents.size(); i++) {
            String s = contents.get(i);
            if (i != 0) {
                y += linePadding + font.getSize();
            }
            if (center) {
                drawCenterString(g, color, font, s, width, y);
            } else {
                drawString(g, color, font, s, x, y);
            }
        }
    }
    public static void drawCenterString(Graphics2D g, Color color, Font font, String content, float y, int width, int lineWordNum, int linePadding) {
        drawString(g, color, font, content, 0, y, width, lineWordNum, linePadding, true);
    }
    public static void drawCenterString(Graphics2D g, Color color, Font font, String content, int width, float y) {
        int textWidth = getStringWidth(g, font, content);

        drawString(g, color, font, content, (width - textWidth) / 2, y);
    }
    public static int getStringWidth(Graphics2D g, Font font, String content) {
        FontMetrics fm = g.getFontMetrics(font);
        //获取字符串宽度
        return fm.stringWidth(content);
    }

}