package com.dy.common.util;

import com.google.zxing.BarcodeFormat;
import com.google.zxing.EncodeHintType;
import com.google.zxing.WriterException;
import com.google.zxing.client.j2se.MatrixToImageWriter;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.qrcode.QRCodeWriter;
import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;

import javax.imageio.ImageIO;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;

public class QrCodeTest1 {

    public static void main(String[] args) throws Exception {

        String[] text = {"12345678;超声波水表;民旺道10号;大禹研究院;020-12345678;106.872615383,11.466578703"};

        String imgpath = "D:\\demo\\";

        for (int i = 0; i < text.length; i++) {

            String[] s = text[i].split(";");

            String[] lines = {"设备编号:" + s[0], "设备类型:" + s[1], "道路名称:" + s[2], "管护单位:" + s[3], "报修电话:" + s[4]};
            String[] line = {s[0], s[1], s[2], s[3], s[4]};

            createq(lines, line, imgpath + "test.jpeg");
        }
    }

    static void createq(String[] lines, String[] line, String imgpath) {

        String qrCodeText = line[0];

        //二维码大小
        int size = 400;

        //画布大小
        int combinedWidth = size + 800;
        int combinedHeight = size + 400 ;

        //标题高度
        int topsize = 160;

        //设置标题y坐标
        int yTitle = 110;

        //设置画布内边距
        int padding = 5;

        //设置标题内容
        String title = "大禹集团";

        //设置图片dpi
        int dpi = 300;

        Color blue = new Color(75, 125, 178);

        //设置二维码参数
        Map hints = new HashMap();

        //设置UTF-8， 防止中文乱码
        hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");

        // 设置二维码的容错性
        hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);

        //留白 默认4
        hints.put(EncodeHintType.MARGIN, 1);

        // 码版本，取值为 1 到 40 ,根据二维码内容决定最低版本
        hints.put(EncodeHintType.QR_VERSION, 3);

        //创建码位图
        BitMatrix bitMatrix = null;
        try {
            bitMatrix = new QRCodeWriter().encode(qrCodeText, BarcodeFormat.QR_CODE, size, size, hints);
        } catch (WriterException e) {
            e.printStackTrace();
        }

        //将生成码位图转换成BufferedImage
        BufferedImage qrImage = MatrixToImageWriter.toBufferedImage(bitMatrix);

        //创建空白BufferedImage
        BufferedImage combined = new BufferedImage(combinedWidth, combinedHeight, BufferedImage.TYPE_INT_RGB);

        //从BufferedImage对象中获取画布（Graphics2D）对象
        Graphics2D graphics = combined.createGraphics();

        //设置渲染提示为启用文本抗锯齿
        graphics.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);

        //默认开启绘图抗锯齿
        //graphics.setRenderingHint(RenderingHints.KEY_STROKE_CONTROL,RenderingHints.VALUE_STROKE_DEFAULT);

        //设置空白画布整体背景颜色
        GraphicsUtils.drawBackground(graphics,0, 0, combinedWidth, combinedHeight,Color.WHITE);

        //绘制表格画线
        //绘制线在内边距内，不影响其它内容，-1操作
        int linepadding = padding - 1 ;
        //绘制矩形
        GraphicsUtils.drawRectangle(graphics,linepadding,linepadding,combinedWidth-linepadding*2,combinedHeight-linepadding*2,Color.BLACK);
        //绘制内三横线
        GraphicsUtils.drawLine(graphics,linepadding,padding+topsize+1,combinedWidth-linepadding,padding+topsize+1,Color.BLACK);
        GraphicsUtils.drawLine(graphics,linepadding,padding+topsize+size+2,combinedWidth-linepadding,padding+topsize+size+2,Color.BLACK);
        GraphicsUtils.drawLine(graphics,linepadding,combinedHeight-(combinedHeight-padding*2-topsize-size+2)/2 - padding,combinedWidth-linepadding,combinedHeight-(combinedHeight-padding*2-topsize-size+2)/2 - padding,Color.BLACK);
        //绘制二维码竖线及右边2横线
        GraphicsUtils.drawLine(graphics,padding+size+1,padding+topsize+1,padding+size+1,padding+topsize+size+1,Color.BLACK);
        GraphicsUtils.drawLine(graphics,padding+size+1,padding+topsize+1+size/3,combinedWidth-linepadding,padding+topsize+1+size/3,Color.BLACK);
        GraphicsUtils.drawLine(graphics,padding+size+1,padding+topsize+1+size/3*2,combinedWidth-linepadding,padding+topsize+1+size/3*2,Color.BLACK);

        //该方法用于绘制头部绘制矩形并填充指定颜色
        GraphicsUtils.drawFillRect(graphics,padding, padding, combinedWidth-(padding*2), topsize,blue);

        //二维码插入画布
        GraphicsUtils.drawImage(graphics,qrImage, padding, topsize+padding+2);

        //该方法用于绘制头部绘制矩形并填充指定颜色
        GraphicsUtils.drawBackground(graphics,padding, padding, combinedWidth-(padding*2), topsize,blue);

        //绘制头部字体
        Font titleFont = new Font("宋体", Font.BOLD, 70);
        GraphicsUtils.drawFont(graphics,titleFont,Color.white);
        FontMetrics fontMetrics = graphics.getFontMetrics();
        int fontWidth = fontMetrics.stringWidth(title);
        int xTitle = ((combinedWidth - fontWidth) / 2);
        GraphicsUtils.drawText(graphics,title,xTitle, yTitle+padding,titleFont,Color.white);

        //绘制非头部字体

        //设置字体及颜色
        Font downFont = new Font("宋体", Font.BOLD, 50);
        GraphicsUtils.drawFont(graphics,downFont,Color.BLACK);

        fontMetrics = graphics.getFontMetrics();

        int fontHeight  = fontMetrics.getHeight();

        for (int i = 0; i < lines.length; i++) {

            if (i < 3){
                graphics.drawString(lines[i], size+padding+5, topsize+padding+ (size/3) * i + (size/3+fontHeight)/2 );
            }else if (i == 3){
                int test =  combinedHeight-(combinedHeight-padding*2-topsize-size)/4*3 - padding + fontHeight/2 ;
                graphics.drawString(lines[i], 5+padding, test);
            }
            else if (i == 4){
                int test =  combinedHeight-(combinedHeight-padding*2-topsize-size)/4 - padding + fontHeight/2 ;
                graphics.drawString(lines[i], 5+padding, test);
            }
        }

        graphics.dispose();

        try {
            ImageIO.write(combined, "jpeg",new File(imgpath) );
        } catch (IOException e) {
            e.printStackTrace();
        }

    }

}