package com.zdcf.test;
import java.awt.AlphaComposite;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.RenderingHints;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import javax.imageio.ImageIO;
import javax.swing.ImageIcon;
import com.sun.image.codec.jpeg.JPEGCodec;
import com.sun.image.codec.jpeg.JPEGImageDecoder;
import com.sun.image.codec.jpeg.JPEGImageEncoder;
/**
* 给图片加水印
*
*/
public class ImageMarkLogoByIcon {
/**
* Test
* @param args
*/
public static void main(String[] args) {
String srcImgPath = "D:/images/B1.JPG";
String iconPath = "D:/images/zhang.png";
String targerPath = "D:/images/index_ban2.jpg";
String targerPath2 = "d:/test/michael/B1.JPG";
// 给图片添加水印
// ImageMarkLogoByIcon.markImageByIcon(iconPath, srcImgPath, targerPath);
// 给图片添加水印,水印旋转-45
// ImageMarkLogoByIcon.markImageByIcon(iconPath, srcImgPath, targerPath2,
// -45);
pressImage(iconPath,srcImgPath,5,0.5f);
}
/**
* 给图片添加水印
* @param iconPath 水印图片路径
* @param srcImgPath 源图片路径
* @param targerPath 目标图片路径
*/
public static void markImageByIcon(String iconPath, String srcImgPath,
String targerPath) {
markImageByIcon(iconPath, srcImgPath, targerPath, null);
}
/**
* 给图片添加水印、可设置水印图片旋转角度
* @param iconPath 水印图片路径
* @param srcImgPath 源图片路径
* @param targerPath 目标图片路径
* @param degree 水印图片旋转角度
*/
public static void markImageByIcon(String iconPath, String srcImgPath,
String targerPath, Integer degree) {
OutputStream os = null;
try {
Image srcImg = ImageIO.read(new File(srcImgPath));
BufferedImage buffImg = new BufferedImage(srcImg.getWidth(null),
srcImg.getHeight(null), BufferedImage.TYPE_INT_RGB);
// 得到画笔对象
// Graphics g= buffImg.getGraphics();
Graphics2D g = buffImg.createGraphics();
// 设置对线段的锯齿状边缘处理
g.setRenderingHint(RenderingHints.KEY_INTERPOLATION,
RenderingHints.VALUE_INTERPOLATION_BILINEAR);
g.drawImage(srcImg.getScaledInstance(srcImg.getWidth(null), srcImg
.getHeight(null), Image.SCALE_SMOOTH), 0, 0, null);
if (null != degree) {
// 设置水印旋转
g.rotate(Math.toRadians(degree),
(double) buffImg.getWidth() / 2, (double) buffImg
.getHeight() / 2);
}
// 水印图象的路径 水印一般为gif或者png的，这样可设置透明度
ImageIcon imgIcon = new ImageIcon(iconPath);
// 得到Image对象。
Image img = imgIcon.getImage();
int width =img.getWidth(null);
int height =img.getHeight(null)/2-img.getHeight(null)/4-img.getHeight(null)/4;
float alpha = 0.5f; // 透明度
g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP,
alpha));
// 表示水印图片的位置
g.drawImage(img, width, height, null);
g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER));
g.dispose();
os = new FileOutputStream(targerPath);
// 生成图片
ImageIO.write(buffImg, "JPG", os);
System.out.println("图片完成添加Icon印章。。。。。。");
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
if (null != os)
os.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}
/**
* 图片水印
* @param pressimg 水印图片
* @param targetimg 目标图片
* @param location 位置：1、左上角，2、右上角，3、左下角，4、右下角，5、正中间
* @param alpha 透明度
*/
public static void pressImage(String pressimg, String targetimg, int location, float alpha) {
try {
//读取目标图片
File img = new File(targetimg);
Image src = ImageIO.read(img);
int width = src.getWidth(null);
int height = src.getHeight(null);
BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
Graphics2D g = image.createGraphics();
g.drawImage(src, 0, 0, width, height, null);
//水印文件
Image src_biao = ImageIO.read(new File(pressimg));
int width_biao = src_biao.getWidth(null);
int height_biao = src_biao.getHeight(null);
//如果水印图片高或者宽大于目标图片是做的处理,使其水印宽或高等于目标图片的宽高，并且等比例缩放
int new_width_biao = width_biao;
int new_height_biao = height_biao;
if(width_biao > width){
new_width_biao = width;
new_height_biao = (int) ((double)new_width_biao/width_biao*height);
}
if(new_height_biao > height){
new_height_biao = height;
new_width_biao = (int) ((double)new_height_biao/height_biao*new_width_biao);
}
//根据位置参数确定坐标位置
int x = 0;
int y = 0;
switch(location)
{
case 1:
break;
case 2:
x = width - new_width_biao;
break;
case 3:
y = height - new_height_biao;
break;
case 4:
x = width - new_width_biao;
y = height -new_height_biao;
break;
case 5:
x = (width - new_width_biao)/2;
y = (height - new_height_biao)/2;
break;
default:
break;
}
g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP, alpha));
g.drawImage(src_biao, x, y, new_width_biao, new_height_biao, null);
//水印文件结束
g.dispose();
ImageIO.write( image, "png", img);
} catch (Exception e) {
e.printStackTrace();
}
}
}