package com.yeshi.makemoney.app.utils;
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import org.yeshi.utils.QRCodeUtil;
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import javax.imageio.ImageIO;
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import java.awt.*;
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import java.awt.image.BufferedImage;
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import java.io.ByteArrayInputStream;
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import java.io.ByteArrayOutputStream;
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import java.io.InputStream;
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import java.util.HashMap;
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/**
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* @author hxh
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* @title: ImageUtil
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* @description: 绘图工具类
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* @date 2022/4/9 12:43
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*/
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public class DrawImageUtil {
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public static InputStream drawInvite(InputStream bg, String inviteCode, String link) throws Exception {
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BufferedImage bgImage = ImageIO.read(bg);
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final BufferedImage targetImg = new BufferedImage(bgImage.getWidth(), bgImage.getHeight(),
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BufferedImage.TYPE_INT_RGB);
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HashMap<RenderingHints.Key, Object> mapH = new HashMap<RenderingHints.Key, Object>();
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// 抗锯齿 （抗锯齿总开关）
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mapH.put(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
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// 文字抗锯齿
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mapH.put(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_GASP);
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// 画 背景图片
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final Graphics2D g2d = targetImg.createGraphics();
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g2d.drawImage(bgImage, 0, 0, bgImage.getWidth(), bgImage.getHeight(), null);
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g2d.setRenderingHints(mapH);
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g2d.setBackground(Color.WHITE);
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Font font = null;
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//画邀请码
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String st = "我的邀请码：" + inviteCode;
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try {
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font = Font.createFont(Font.PLAIN, DrawImageUtil.class.getClassLoader().getResourceAsStream("fonts/yahei.ttf")).deriveFont(36.0f);
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} catch (FontFormatException e) {
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e.printStackTrace();
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}
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g2d.setFont(font);
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g2d.setColor(new Color(255, 255, 255));
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FontMetrics fm = g2d.getFontMetrics(font);
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int textLength = fm.stringWidth(st);
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int ax = (bgImage.getWidth() - textLength) / 2;
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int ay = bgImage.getHeight() - bgImage.getWidth() * 8 / 15 + font.getSize();
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g2d.fillRoundRect(ax - 40, ay - 20 - font.getSize(), textLength + 40 * 2, font.getSize() + 25 * 2, font.getSize() + 25 * 2, font.getSize() + 25 * 2);
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g2d.setColor(new Color(254, 0, 62));
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g2d.drawString(st, ax, ay);
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//画二维码背景
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g2d.setColor(new Color(255, 255, 255));
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ay = ay - 15 - font.getSize() + (font.getSize() + 17 * 2) * 7 / 4;
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g2d.fillRoundRect(ax - 40, ay, textLength + 40 * 2, textLength + 30 * 2, font.getSize() + 17 * 2, font.getSize() + 17 * 2);
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BufferedImage code = QRCodeUtil.getInstance(500, 500).createImageDeleteWhite(link, null, 0xFFFE003E, 0xFFFFFFFF, true);
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g2d.drawImage(zoomInImage(code, textLength, textLength), null, ax, ay + 30);
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ByteArrayOutputStream aos = new ByteArrayOutputStream();
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ImageIO.write(targetImg, "JPEG", aos);
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return new ByteArrayInputStream(aos.toByteArray());
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}
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public static BufferedImage zoomInImage(BufferedImage originalImage, int width, int height) {
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int type = originalImage.getType();
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if (type == 0) {
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type = 5;
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}
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BufferedImage newImage = new BufferedImage(width, height, type);
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Graphics g = newImage.getGraphics();
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g.drawImage(originalImage, 0, 0, width, height, null);
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g.dispose();
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return newImage;
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}
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}
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