com.chinarewards.gwt.license.util.ImageDisposeUtil.java Source code

Introduction

Here is the source code for com.chinarewards.gwt.license.util.ImageDisposeUtil.java

Source

package com.chinarewards.gwt.license.util;

import java.awt.*;
import java.io.*;
import java.awt.image.*;
import com.sun.image.codec.jpeg.*;
import org.apache.commons.logging.LogFactory;
import org.apache.commons.logging.Log;
import org.apache.commons.io.*;

/**
 * java?
 * */
public class ImageDisposeUtil {
    private static final Log logger = LogFactory.getLog(ImageDisposeUtil.class);

    public ImageDisposeUtil() {
    }

    // 
    // ImageDisposeUtil.reduceImg(this.getUpload().getPath(), dstPath, 200, 180,
    // 0);
    // ?this.getUpload().getPath()
    // ?dstPath

    /**
     * @param imgsrc   
     * @param imgdist ? 
     * @param widthdist  
     * @param heightdist 
     * @param int benchmark :0,12
     * 
     */
    public static void reduceImg(String imgsrc, String imgdist, int widthdist, int heightdist, int benchmark) {

        try {
            // System.out.println("*******widthdist********:"+widthdist);
            // System.out.println("*******heightdist********:"+heightdist);
            // System.out.println("*******benchmark********:"+benchmark);
            File srcfile = new File(imgsrc);
            if (!srcfile.exists()) {
                return;
            }
            Image src = javax.imageio.ImageIO.read(srcfile);
            int width = src.getWidth(null);
            int height = src.getHeight(null);
            if (width <= widthdist && height <= heightdist) {
                // SysUtil.cpoyFile(imgsrc, imgdist);
                FileUtils.copyFile(new File(imgsrc), new File(imgdist));
                return;
            }
            // 
            float wh = (float) width / (float) height;
            if (benchmark == 0) {
                if (wh > 1) {
                    float tmp_heigth = (float) widthdist / wh;
                    BufferedImage tag = new BufferedImage(widthdist, (int) tmp_heigth, BufferedImage.TYPE_INT_RGB);
                    tag.getGraphics().drawImage(src, 0, 0, widthdist, (int) tmp_heigth, null);
                    FileOutputStream out = new FileOutputStream(imgdist);
                    JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
                    encoder.encode(tag);
                    out.close();
                } else {
                    float tmp_width = (float) heightdist * wh;
                    BufferedImage tag = new BufferedImage((int) tmp_width, heightdist, BufferedImage.TYPE_INT_RGB);
                    tag.getGraphics().drawImage(src, 0, 0, (int) tmp_width, heightdist, null);
                    FileOutputStream out = new FileOutputStream(imgdist);
                    JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
                    encoder.encode(tag);
                    out.close();
                }
            }
            if (benchmark == 1) {
                float tmp_heigth = (float) widthdist / wh;
                BufferedImage tag = new BufferedImage(widthdist, (int) tmp_heigth, BufferedImage.TYPE_INT_RGB);
                tag.getGraphics().drawImage(src, 0, 0, widthdist, (int) tmp_heigth, null);
                FileOutputStream out = new FileOutputStream(imgdist);
                JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
                encoder.encode(tag);
                out.close();
            }
            if (benchmark == 2) {
                float tmp_width = (float) heightdist * wh;
                BufferedImage tag = new BufferedImage((int) tmp_width, heightdist, BufferedImage.TYPE_INT_RGB);
                tag.getGraphics().drawImage(src, 0, 0, (int) tmp_width, heightdist, null);
                FileOutputStream out = new FileOutputStream(imgdist);
                JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
                encoder.encode(tag);
                out.close();
            }
        } catch (IOException ex) {
            logger.error(ex);
        }
    }
}