package com.image;

import java.awt.AlphaComposite;
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;

import javax.imageio.ImageIO;

public final class ImageUtils {
	private static final String PICTRUE_FORMATE_JPG = "jpg";

	private ImageUtils() {
	}

	public static void pressText(String targetImg, String pressText1,
			String pressText2, String pressText3, int fontSize, Color color) {
		try {
			File file = new File(targetImg);
			File dstFile = new File(targetImg + "_dst.jpg");

			Image image = ImageIO.read(file);
			int width = image.getWidth(null);
			int height = image.getHeight(null);
			BufferedImage bufferedImage = new BufferedImage(width, height,
					BufferedImage.TYPE_INT_RGB);
			Graphics2D g = bufferedImage.createGraphics();
			g.drawImage(image, 0, 0, width, height, null);
			g.setFont(new Font("微软雅黑", Font.BOLD, fontSize));
			g.setColor(color);
			g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP,
					1));
			int x = 135;
			int y = 163;
			int width_1 = fontSize * getLength(pressText1);
			int height_1 = fontSize;
			int widthDiff = width - width_1;
			int heightDiff = height - height_1;
			if (x < 0) {
				x = widthDiff / 2;
			} else if (x > widthDiff) {
				x = widthDiff;
			}
			if (y < 0) {
				y = heightDiff / 2;
			} else if (y > heightDiff) {
				y = heightDiff;
			}

			g.drawString(pressText1, x, y + height_1);

			x = 135;
			y = 355;
			width_1 = fontSize * getLength(pressText1);
			height_1 = fontSize;
			widthDiff = width - width_1;
			heightDiff = height - height_1;
			if (x < 0) {
				x = widthDiff / 2;
			} else if (x > widthDiff) {
				x = widthDiff;
			}
			if (y < 0) {
				y = heightDiff / 2;
			} else if (y > heightDiff) {
				y = heightDiff;
			}
			g.drawString(pressText2, x, y + height_1);

			x = 135;
			y = 550;
			width_1 = fontSize * getLength(pressText1);
			height_1 = fontSize;
			widthDiff = width - width_1;
			heightDiff = height - height_1;
			if (x < 0) {
				x = widthDiff / 2;
			} else if (x > widthDiff) {
				x = widthDiff;
			}
			if (y < 0) {
				y = heightDiff / 2;
			} else if (y > heightDiff) {
				y = heightDiff;
			}
			g.drawString(pressText3, x, y + height_1);

			g.dispose();
			ImageIO.write(bufferedImage, PICTRUE_FORMATE_JPG, dstFile);
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	public static int getLength(String text) {
		int textLength = text.length();
		int length = textLength;
		for (int i = 0; i < textLength; i++) {
			if (String.valueOf(text.charAt(i)).getBytes().length > 1) {
				length++;
			}
		}
		return (length % 2 == 0) ? length / 2 : length / 2 + 1;
	}

	public static void main(String[] args) throws IOException {
		String taijiongPath = "C:/taijiong.jpg";
		pressText(taijiongPath, "你想加入java牛的java版微博开发活动weibo4j么？", "还差1牛币？",
				"啊哈哈哈哈!!!现在涨成100000牛币了!!!", 18, Color.WHITE);
	}
}