package com.mandi.common;
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import java.awt.AlphaComposite;
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import java.awt.Color;
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import java.awt.Font;
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import java.awt.Graphics;
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import java.awt.Graphics2D;
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import java.awt.Image;
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import java.awt.RenderingHints;
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import java.awt.Toolkit;
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import java.awt.color.ColorSpace;
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import java.awt.image.BufferedImage;
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import java.awt.image.ColorConvertOp;
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import java.awt.image.CropImageFilter;
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import java.awt.image.FilteredImageSource;
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import java.awt.image.ImageFilter;
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import java.awt.image.ImagingOpException;
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import java.io.File;
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import java.io.FileOutputStream;
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import java.io.IOException;
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import javax.imageio.ImageIO;
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/**
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* @author mengly
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* @version 创建时间：2016年4月21日 下午6:01:01
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* 类说明
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*/
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public class ImageUtils {
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/**
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* 相对于图片的位置
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*/
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private static final int POSITION_UPPERLEFT=0;
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private static final int POSITION_UPPERRIGHT=10;
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private static final int POSITION_LOWERLEFT=1;
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private static final int POSITION_LOWERRIGHT=11;
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/**
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* 几种常见的图片格式
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*/
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public static String IMAGE_TYPE_GIF = "gif";// 图形交换格式
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public static String IMAGE_TYPE_JPG = "jpg";// 联合照片专家组
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public static String IMAGE_TYPE_JPEG = "jpeg";// 联合照片专家组
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public static String IMAGE_TYPE_BMP = "bmp";// 英文Bitmap（位图）的简写，它是Windows操作系统中的标准图像文件格式
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public static String IMAGE_TYPE_PNG = "png";// 可移植网络图形
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private static ImageUtils instance;
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private ImageUtils() {
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instance = this;
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}
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/**
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* 获取实例
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* @return
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*/
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public static ImageUtils getInstance() {
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if (instance == null) {
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instance = new ImageUtils();
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}
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return instance;
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}
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public BufferedImage image2BufferedImage(Image image){
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System.out.println(image.getWidth(null));
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System.out.println(image.getHeight(null));
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BufferedImage bufferedImage = new BufferedImage(image.getWidth(null), image.getHeight(null), BufferedImage.TYPE_INT_ARGB);
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Graphics2D g = bufferedImage.createGraphics();
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g.drawImage(image, null, null);
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g.dispose();
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return bufferedImage;
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}
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/**
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* 缩放并转换格式后保存
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* @param srcPath源路径
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* @param destPath目标路径
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* @param width：目标宽
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* @param height：目标高
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* @param format：文件格式
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* @return
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*/
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public static boolean scaleToFile(String srcPath, String destPath, int width, int height,String format) {
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boolean flag = false;
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try {
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File file = new File(srcPath);
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File destFile = new File(destPath);
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if (!destFile.getParentFile().exists()) {
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destFile.getParentFile().mkdir();
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}
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BufferedImage src = ImageIO.read(file); // 读入文件
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Image image = src.getScaledInstance(width, height, Image.SCALE_DEFAULT);
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BufferedImage tag = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
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Graphics g = tag.getGraphics();
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g.drawImage(image, 0, 0, null); // 绘制缩小后的图
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g.dispose();
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flag = ImageIO.write(tag, format, new FileOutputStream(destFile));// 输出到文件流
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} catch (IOException e) {
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e.printStackTrace();
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}
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return flag;
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}
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/**
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* 缩放Image，此方法返回源图像按百分比缩放后的图像
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* @param inputImage
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* @param percentage 百分比 允许的输入0<percentage<10000
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* @return
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*/
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public static BufferedImage scaleByPercentage(BufferedImage inputImage,int percentage){
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//允许百分比
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if(0>percentage||percentage>10000){
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throw new ImagingOpException("Error::不合法的参数:percentage->"+percentage+",percentage应该大于0~小于10000");
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}
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//获取原始图像透明度类型
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int type = inputImage.getColorModel().getTransparency();
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//获取目标图像大小
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int w=inputImage.getWidth()*percentage;
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int h=inputImage.getHeight()*percentage;
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//开启抗锯齿
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RenderingHints renderingHints=new RenderingHints(RenderingHints.KEY_INTERPOLATION,
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RenderingHints.VALUE_ANTIALIAS_ON);
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//使用高质量压缩
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renderingHints.put(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_RENDER_QUALITY);
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BufferedImage img = new BufferedImage(w, h, type);
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Graphics2D graphics2d =img.createGraphics();
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graphics2d.setRenderingHints(renderingHints);
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graphics2d.drawImage(inputImage, 0, 0, w, h, 0, 0, inputImage
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.getWidth(), inputImage.getHeight(), null);
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graphics2d.dispose();
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return img;
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/*此代码将返回Image类型
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return inputImage.getScaledInstance(inputImage.getWidth()*percentage,
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inputImage.getHeight()*percentage, Image.SCALE_SMOOTH);
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*/
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}
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/**
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* 缩放Image，此方法返回源图像按给定最大宽度限制下按比例缩放后的图像
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* @param inputImage
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* @param maxWidth：压缩后允许的最大宽度
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* @param maxHeight：压缩后允许的最大高度
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* @throws java.io.IOException
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* return
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*/
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public static BufferedImage scaleByPixelRate(BufferedImage inputImage, int maxWidth, int maxHeight) throws Exception {
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//获取原始图像透明度类型
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int type = inputImage.getColorModel().getTransparency();
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int width = inputImage.getWidth();
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int height = inputImage.getHeight();
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int newWidth = maxWidth;
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int newHeight =maxHeight;
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//如果指定最大宽度超过比例
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if(width*maxHeight<height*maxWidth){
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newWidth=(int)(newHeight*width/height) ;
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}
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//如果指定最大高度超过比例
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if(width*maxHeight>height*maxWidth){
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newHeight=(int)(newWidth*height/width);
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}
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//开启抗锯齿
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RenderingHints renderingHints=new RenderingHints(RenderingHints.KEY_INTERPOLATION,
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RenderingHints.VALUE_ANTIALIAS_ON);
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//使用高质量压缩
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renderingHints.put(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_RENDER_QUALITY);
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BufferedImage img = new BufferedImage(newWidth, newHeight, type);
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Graphics2D graphics2d =img.createGraphics();
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graphics2d.setRenderingHints(renderingHints);
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graphics2d.drawImage(inputImage, 0, 0, newWidth, newHeight, 0, 0, width, height, null);
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graphics2d.dispose();
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return img;
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}
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/**
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* 缩放Image，此方法返回源图像按给定宽度、高度限制下缩放后的图像
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* @param inputImage
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* @param maxWidth：压缩后宽度
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* @param maxHeight：压缩后高度
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* @throws java.io.IOException
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* return
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*/
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public static BufferedImage scaleByPixel(BufferedImage inputImage, int newWidth, int newHeight) throws Exception {
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//获取原始图像透明度类型
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int type = inputImage.getColorModel().getTransparency();
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int width = inputImage.getWidth();
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int height = inputImage.getHeight();
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//开启抗锯齿
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RenderingHints renderingHints=new RenderingHints(RenderingHints.KEY_ANTIALIASING,
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RenderingHints.VALUE_ANTIALIAS_ON);
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//使用高质量压缩
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renderingHints.put(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);
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BufferedImage img = new BufferedImage(newWidth, newHeight, type);
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Graphics2D graphics2d =img.createGraphics();
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graphics2d.setRenderingHints(renderingHints);
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graphics2d.drawImage(inputImage, 0, 0, newWidth, newHeight, 0, 0, width, height, null);
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graphics2d.dispose();
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return img;
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}
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/**
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* 切割图像，返回指定范围的图像
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* @param inputImage
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* @param x 起点横坐标
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* @param y 起点纵坐标
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* @param width 切割图片宽度:如果宽度超出图片，将改为图片自x剩余宽度
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* @param height 切割图片高度：如果高度超出图片，将改为图片自y剩余高度
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* @param fill 指定目标图像大小超出时是否补白，如果true，则表示补白；false表示不补白，此时将重置目标图像大小
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* @return
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*/
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public static BufferedImage cut(BufferedImage inputImage,int x,int y,int width,int height,boolean fill){
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//获取原始图像透明度类型
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int type = inputImage.getColorModel().getTransparency();
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int w = inputImage.getWidth();
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int h = inputImage.getHeight();
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int endx=x+width;
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int endy=y+height;
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if(x>w)
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throw new ImagingOpException("起点横坐标超出源图像范围");
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if(y>h)
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throw new ImagingOpException("起点纵坐标超出源图像范围");
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BufferedImage img;
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//补白
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if(fill){
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img = new BufferedImage(width, height, type);
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//宽度超出限制
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if((w-x)<width){
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width=w-x;
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endx=w;
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}
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//高度超出限制
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if((h-y)<height){
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height=h-y;
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endy=h;
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}
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//不补
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}else{
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//宽度超出限制
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if((w-x)<width){
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width=w-x;
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endx=w;
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}
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//高度超出限制
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if((h-y)<height){
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height=h-y;
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endy=h;
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}
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img = new BufferedImage(width, height, type);
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}
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//开启抗锯齿
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RenderingHints renderingHints=new RenderingHints(RenderingHints.KEY_INTERPOLATION,
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RenderingHints.VALUE_ANTIALIAS_ON);
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//使用高质量压缩
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renderingHints.put(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_RENDER_QUALITY);
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Graphics2D graphics2d =img.createGraphics();
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graphics2d.setRenderingHints(renderingHints);
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graphics2d.drawImage(inputImage, 0, 0, width, height, x, y, endx, endy, null);
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graphics2d.dispose();
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return img;
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}
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/**
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* 切割图像，返回指定起点位置指定大小图像
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* @param inputImage
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* @param startPoint 起点位置：左上：0、右上:10、左下:1、右下:11
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* @param width 切割图片宽度
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* @param height 切割图片高度
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* @param fill 指定目标图像大小超出时是否补白，如果true，则表示补白；false表示不补白，此时将重置目标图像大小
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* @return
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*/
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public static BufferedImage cut(BufferedImage inputImage,int startPoint,int width,int height,boolean fill){
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//获取原始图像透明度类型
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int type = inputImage.getColorModel().getTransparency();
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int w = inputImage.getWidth();
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int h = inputImage.getHeight();
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BufferedImage img;
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//补白
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if(fill){
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img = new BufferedImage(width, height, type);
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if(width>w)
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width=w;
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if(height>h)
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height=h;
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//不补
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}else{
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if(width>w)
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width=w;
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if(height>h)
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height=h;
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img = new BufferedImage(width, height, type);
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}
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//开启抗锯齿
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RenderingHints renderingHints=new RenderingHints(RenderingHints.KEY_INTERPOLATION,
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RenderingHints.VALUE_ANTIALIAS_ON);
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//使用高质量压缩
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renderingHints.put(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_RENDER_QUALITY);
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Graphics2D graphics2d =img.createGraphics();
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graphics2d.setRenderingHints(renderingHints);
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switch(startPoint){
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//右上
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case POSITION_UPPERRIGHT:
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graphics2d.drawImage(inputImage, w-width, 0, w, height, 0, 0, width, height, null);
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break;
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//左下
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case POSITION_LOWERLEFT:
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graphics2d.drawImage(inputImage, 0, h-height, width, h, 0, 0, width, height, null);
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break;
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//右下
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case POSITION_LOWERRIGHT:
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graphics2d.drawImage(inputImage, w-width, h-height, w, h, 0, 0, width, height, null);
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break;
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//默认左上
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case POSITION_UPPERLEFT:
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default:
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graphics2d.drawImage(inputImage, 0, 0, width, height, 0, 0, width, height, null);
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}
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graphics2d.dispose();
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return img;
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}
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/**
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* 以指定角度旋转图片：使用正角度 theta 进行旋转，可将正 x 轴上的点转向正 y 轴。
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* @param inputImage
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* @param degree 角度:以度数为单位
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* @return
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*/
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public static BufferedImage rotateImage(final BufferedImage inputImage,
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final int degree) {
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int w = inputImage.getWidth();
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int h = inputImage.getHeight();
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int type = inputImage.getColorModel().getTransparency();
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BufferedImage img=new BufferedImage(w, h, type);
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Graphics2D graphics2d =img.createGraphics();
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//开启抗锯齿
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RenderingHints renderingHints=new RenderingHints(RenderingHints.KEY_INTERPOLATION,
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RenderingHints.VALUE_ANTIALIAS_ON);
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//使用高质量压缩
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renderingHints.put(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_RENDER_QUALITY);
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graphics2d.setRenderingHints(renderingHints);
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graphics2d.rotate(Math.toRadians(degree), w / 2, h / 2);
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graphics2d.drawImage(inputImage, 0, 0, null);
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graphics2d.dispose();
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return img;
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}
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/**
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* 水平翻转图像
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*
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* @param bufferedimage 目标图像
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* @return
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*/
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public static BufferedImage flipHorizontalImage(final BufferedImage inputImage) {
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int w = inputImage.getWidth();
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int h = inputImage.getHeight();
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BufferedImage img;
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Graphics2D graphics2d;
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(graphics2d = (img = new BufferedImage(w, h, inputImage
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.getColorModel().getTransparency())).createGraphics())
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.drawImage(inputImage, 0, 0, w, h, w, 0, 0, h, null);
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graphics2d.dispose();
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return img;
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}
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/**
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* 竖直翻转图像
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*
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* @param bufferedimage 目标图像
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* @return
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*/
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public static BufferedImage flipVerticalImage(final BufferedImage inputImage) {
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int w = inputImage.getWidth();
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int h = inputImage.getHeight();
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BufferedImage img;
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Graphics2D graphics2d;
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(graphics2d = (img = new BufferedImage(w, h, inputImage
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.getColorModel().getTransparency())).createGraphics())
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.drawImage(inputImage, 0, 0, w, h, 0, h, w, 0, null);
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graphics2d.dispose();
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return img;
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}
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/**
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* 图片水印
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*
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* @param inputImage
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* 待处理图像
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* @param markImage
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* 水印图像
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* @param x
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* 水印位于图片左上角的 x 坐标值
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* @param y
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* 水印位于图片左上角的 y 坐标值
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* @param alpha
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* 水印透明度 0.1f ~ 1.0f
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* */
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public static BufferedImage waterMark(BufferedImage inputImage,BufferedImage markImage, int x, int y,
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float alpha) {
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BufferedImage image = new BufferedImage(inputImage.getWidth(), inputImage
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.getHeight(), BufferedImage.TYPE_INT_ARGB);
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Graphics2D g = image.createGraphics();
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g.drawImage(inputImage, 0, 0, null);
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// 加载水印图像
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g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP,
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alpha));
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g.drawImage(markImage, x, y, null);
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g.dispose();
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return image;
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}
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/**
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* 文字水印
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*
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* @param inputImage
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* 待处理图像
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* @param text
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* 水印文字
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* @param font
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* 水印字体信息
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* @param color
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* 水印字体颜色
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* @param x
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* 水印位于图片左上角的 x 坐标值
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* @param y
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* 水印位于图片左上角的 y 坐标值
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* @param alpha
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* 水印透明度 0.1f ~ 1.0f
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*/
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public static BufferedImage textMark(BufferedImage inputImage, String text, Font font,
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Color color, int x, int y, float alpha) {
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Font dfont = (font == null) ? new Font("宋体", 20, 13) : font;
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BufferedImage image = new BufferedImage(inputImage.getWidth(), inputImage
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.getHeight(), BufferedImage.TYPE_INT_ARGB);
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Graphics2D g = image.createGraphics();
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g.drawImage(inputImage, 0, 0, null);
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g.setColor(color);
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g.setFont(dfont);
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g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP,
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alpha));
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g.drawString(text, x, y);
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g.dispose();
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return image;
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}
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/**
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* 图像彩色转黑白色
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* @param inputImage
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* @return 转换后的BufferedImage
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*/
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public final static BufferedImage toGray(BufferedImage inputImage)
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{
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ColorSpace cs = ColorSpace.getInstance(ColorSpace.CS_GRAY);
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//对源 BufferedImage 进行颜色转换。如果目标图像为 null，
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//则根据适当的 ColorModel 创建 BufferedImage。
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ColorConvertOp op = new ColorConvertOp(cs, null);
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return op.filter(inputImage, null);
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}
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/**
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* 图像彩色转为黑白
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* @param srcImageFile
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* 源图像地址
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* @param destImageFile
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* 目标图像地址
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* @param formatType
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* 目标图像格式：如果formatType为null;将默认转换为PNG
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*/
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public final static void toGray(String srcImageFile, String destImageFile,String formatType)
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{
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try
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{
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BufferedImage src = ImageIO.read(new File(srcImageFile));
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ColorSpace cs = ColorSpace.getInstance(ColorSpace.CS_GRAY);
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ColorConvertOp op = new ColorConvertOp(cs, null);
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src = op.filter(src, null);
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//如果formatType为null;将默认转换为PNG
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if(formatType==null){
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formatType="PNG";
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}
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ImageIO.write(src,formatType,new File(destImageFile));
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} catch (IOException e)
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{
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e.printStackTrace();
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}
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}
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/**
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* 图像类型转换：GIF->JPG、GIF->PNG、PNG->JPG、PNG->GIF(X)、BMP->PNG
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*
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* @param inputImage
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* 源图像地址
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* @param formatType
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* 包含格式非正式名称的 String：如JPG、JPEG、GIF等
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* @param destImageFile
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* 目标图像地址
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*/
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public final static void convert(BufferedImage inputImage, String formatType,String destImageFile)
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{
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try
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{
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ImageIO.write(inputImage, formatType, new File(destImageFile));
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} catch (Exception e)
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{
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e.printStackTrace();
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}
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}
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/**
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* 图像切割（指定切片的行数和列数）
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*
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* @param srcImageFile
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* 源图像地址
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* @param destDir
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* 切片目标文件夹
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* @param formatType
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* 目标格式
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* @param rows
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* 目标切片行数。默认2，必须是范围 [1, 20] 之内
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* @param cols
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* 目标切片列数。默认2，必须是范围 [1, 20] 之内
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*/
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public final static void cut(BufferedImage inputImage, String destDir,
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String formatType,int rows, int cols)
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{
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try
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{
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if (rows <= 0 || rows > 20)
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rows = 2; // 切片行数
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if (cols <= 0 || cols > 20)
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cols = 2; // 切片列数
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// 读取源图像
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//BufferedImage bi = ImageIO.read(new File(srcImageFile));
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int w = inputImage.getHeight(); // 源图宽度
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int h = inputImage.getWidth(); // 源图高度
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if (w > 0 && h > 0)
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{
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Image img;
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ImageFilter cropFilter;
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Image image = inputImage.getScaledInstance(w, h,
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Image.SCALE_DEFAULT);
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int destWidth = w; // 每张切片的宽度
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int destHeight = h; // 每张切片的高度
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// 计算切片的宽度和高度
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if (w % cols == 0)
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{
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destWidth = w / cols;
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} else
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{
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destWidth = (int) Math.floor(w / cols) + 1;
|
}
|
if (h % rows == 0)
|
{
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destHeight = h / rows;
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} else
|
{
|
destHeight = (int) Math.floor(h / rows) + 1;
|
}
|
// 循环建立切片
|
// 改进的想法:是否可用多线程加快切割速度
|
for (int i = 0; i < rows; i++)
|
{
|
for (int j = 0; j < cols; j++)
|
{
|
// 四个参数分别为图像起点坐标和宽高
|
// 即: CropImageFilter(int x,int y,int width,int height)
|
cropFilter = new CropImageFilter(j * destWidth, i
|
* destHeight, destWidth, destHeight);
|
img = Toolkit.getDefaultToolkit().createImage(
|
new FilteredImageSource(image.getSource(),
|
cropFilter));
|
BufferedImage tag = new BufferedImage(destWidth,
|
destHeight, BufferedImage.TYPE_INT_ARGB);
|
Graphics g = tag.getGraphics();
|
g.drawImage(img, 0, 0, null); // 绘制缩小后的图
|
g.dispose();
|
// 输出为文件
|
ImageIO.write(tag, formatType, new File(destDir + "_r" + i
|
+ "_c" + j + "."+formatType.toLowerCase()));
|
}
|
}
|
}
|
} catch (Exception e)
|
{
|
e.printStackTrace();
|
}
|
}
|
/**
|
* 给图片添加文字水印
|
*
|
* @param pressText
|
* 水印文字
|
* @param srcImageFile
|
* 源图像地址
|
* @param destImageFile
|
* 目标图像地址
|
* @param fontName
|
* 水印的字体名称
|
* @param fontStyle
|
* 水印的字体样式
|
* @param color
|
* 水印的字体颜色
|
* @param fontSize
|
* 水印的字体大小
|
* @param x
|
* 修正值
|
* @param y
|
* 修正值
|
* @param alpha
|
* 透明度：alpha 必须是范围 [0.0, 1.0] 之内（包含边界值）的一个浮点数字
|
* @param formatType
|
* 目标格式
|
*/
|
public final static void pressText(String pressText, String srcImageFile,
|
String destImageFile, String fontName, int fontStyle, Color color,
|
int fontSize, int x, int y, float alpha,String formatType)
|
{
|
try
|
{
|
File img = new File(srcImageFile);
|
Image src = ImageIO.read(img);
|
int width = src.getWidth(null);
|
int height = src.getHeight(null);
|
BufferedImage image = new BufferedImage(width, height,
|
BufferedImage.TYPE_INT_ARGB);
|
Graphics2D g = image.createGraphics();
|
g.drawImage(src, 0, 0, width, height, null);
|
g.setColor(color);
|
g.setFont(new Font(fontName, fontStyle, fontSize));
|
g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP,
|
alpha));
|
// 在指定坐标绘制水印文字
|
g.drawString(pressText, (width - (getLength(pressText) * fontSize))
|
/ 2 + x, (height - fontSize) / 2 + y);
|
g.dispose();
|
ImageIO.write((BufferedImage) image, formatType,
|
new File(destImageFile));// 输出到文件流
|
} catch (Exception e)
|
{
|
e.printStackTrace();
|
}
|
}
|
/**
|
* 给图片添加图片水印
|
*
|
* @param pressImg
|
* 水印图片
|
* @param srcImageFile
|
* 源图像地址
|
* @param destImageFile
|
* 目标图像地址
|
* @param x
|
* 修正值。 默认在中间
|
* @param y
|
* 修正值。 默认在中间
|
* @param alpha
|
* 透明度：alpha 必须是范围 [0.0, 1.0] 之内（包含边界值）的一个浮点数字
|
* @param formatType
|
* 目标格式
|
*/
|
public final static void pressImage(String pressImg, String srcImageFile,
|
String destImageFile, int x, int y, float alpha,String formatType)
|
{
|
try
|
{
|
File img = new File(srcImageFile);
|
Image src = ImageIO.read(img);
|
int wideth = src.getWidth(null);
|
int height = src.getHeight(null);
|
BufferedImage image = new BufferedImage(wideth, height,
|
BufferedImage.TYPE_INT_ARGB);
|
Graphics2D g = image.createGraphics();
|
g.drawImage(src, 0, 0, wideth, height, null);
|
// 水印文件
|
Image src_biao = ImageIO.read(new File(pressImg));
|
int wideth_biao = src_biao.getWidth(null);
|
int height_biao = src_biao.getHeight(null);
|
g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP,
|
alpha));
|
g.drawImage(src_biao, (wideth - wideth_biao) / 2,
|
(height - height_biao) / 2, wideth_biao, height_biao, null);
|
// 水印文件结束
|
g.dispose();
|
ImageIO.write((BufferedImage) image, formatType,
|
new File(destImageFile));
|
} catch (Exception e)
|
{
|
e.printStackTrace();
|
}
|
}
|
/**
|
* 计算text的长度（一个中文算两个字符）
|
*
|
* @param text
|
* @return
|
*/
|
public final static int getLength(String text)
|
{
|
int length = 0;
|
for (int i = 0; i < text.length(); i++)
|
{
|
if (new String(text.charAt(i) + "").getBytes().length > 1)
|
{
|
length += 2;
|
} else
|
{
|
length += 1;
|
}
|
}
|
return length / 2;
|
}
|
}
|
