package com.qxueyou.scc.base.util;

import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.RenderingHints;
import java.awt.geom.Ellipse2D;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;

import javax.imageio.ImageIO;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;

import sun.misc.BASE64Encoder;
@SuppressWarnings("restriction")
public class ImageUtils {

	private static Logger log = LogManager.getLogger("ImageUtils");

	public static void doBeautiful(File file) {

		try {
			BufferedImage bi1 = ImageIO.read(file);
			Ellipse2D.Double shapeEllipse = new Ellipse2D.Double(0, 0, Math.min(bi1.getWidth(),bi1.getHeight()),
					Math.min(bi1.getWidth(),bi1.getHeight()));

			// 设置透明背景
			BufferedImage bi2 = new BufferedImage(bi1.getWidth(),
					bi1.getHeight(), BufferedImage.TRANSLUCENT);
			Graphics2D g2 = bi2.createGraphics();
			g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
			g2.setClip(shapeEllipse);

			// 画图片
			g2.drawImage(bi1, 0, 0, null);
			g2.dispose();

			ImageIO.write(bi2, "PNG", file);

		} catch (IOException e) {
			log.error("图片处理失败", e);
		}
	}
	//矩形头像
	public static void doRectangle(File file){
		try {
			BufferedImage bi1 = ImageIO.read(file);
			Rectangle2D.Double shapeRectangle = new Rectangle2D.Double(0, 0, Math.min(bi1.getWidth(),bi1.getHeight()),
					Math.min(bi1.getWidth(),bi1.getHeight()));

			// 设置透明背景
			BufferedImage bi2 = new BufferedImage(bi1.getWidth(),
					bi1.getHeight(), BufferedImage.TRANSLUCENT);
			Graphics2D g2 = bi2.createGraphics();
			g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
			g2.setClip(shapeRectangle);

			// 画图片
			g2.drawImage(bi1, 0, 0, null);
			g2.dispose();

			ImageIO.write(bi2, "PNG", file);

		} catch (IOException e) {
			log.error("图片处理失败", e);
		}
	}
	
	/**
	 * 为图片生成缩略图
	 * @param file
	 */
	public static void decreaseSizeImage(File file) {

		try {
			
			BufferedImage bi1 = ImageIO.read(file);
			

			int width = bi1.getWidth();
			int height = bi1.getHeight();
			

			// 设置透明背景
			BufferedImage bi2 = new BufferedImage(getPriviewImageWidth(width,height),
					getPriviewImageHeight(width,height), bi1.getType());
			Graphics2D g2 = bi2.createGraphics();

			// 画图片
			Image image = bi1.getScaledInstance(getPriviewImageWidth(width,height), getPriviewImageHeight(width,height), Image.SCALE_DEFAULT);  
			g2.drawImage(image, 0, 0, null);
			g2.dispose();

			ImageIO.write(bi2, "PNG", createPreviewFile(file));

		} catch (IOException e) {
			log.error("图片处理失败", e);
		}
	}
	
	public static File createPreviewFile(File f){
		return new File(f.getParentFile().getAbsolutePath().concat("/pre_").concat(f.getName()));
	}
	
	private static int getPriviewImageWidth(int width,int height){
		double wid = width;
		double hei = height;
		
		double ratioWid = wid / 120;
		double ratioHeight = hei / 160;
		
		if(ratioWid >= ratioHeight){
			return 120;
		}else{
			return (int) (wid/ratioHeight);
		}
	}
	
	private static int getPriviewImageHeight(int width,int height){
		double wid = width;
		double hei = height;
		
		double ratioWid = wid / 120;
		double ratioHeight = hei / 160;
		
		if(ratioWid >= ratioHeight){
			return (int) (hei/ratioWid);
		}else{
			return 160;
		}
	}
	
	public static String encodeImgageToBase64(String imgStr) { // 将图片文件转化为字节数组字符串，并对其进行Base64编码处理  
        
		
		ByteArrayOutputStream outputStream = null;  
        try {  
        	URL imageUrl=   new URL(imgStr); 
            BufferedImage bufferedImage = ImageIO.read(imageUrl);  
            outputStream = new ByteArrayOutputStream();  
            ImageIO.write(bufferedImage, "jpg", outputStream);  
        } catch (MalformedURLException e1) {  
            e1.printStackTrace();  
        } catch (IOException e) {  
            e.printStackTrace();  
        }  
        // 对字节数组Base64编码  
        BASE64Encoder encoder = new BASE64Encoder();  
        return encoder.encode(outputStream.toByteArray());// 返回Base64编码过的字节数组字符串  
    } 
	
	public static void main(String[] args){
		
		doRectangle(new File("C:/Users/Public/Pictures/Sample Pictures/desert.jpg"));
	}
}