com.l1j5.web.common.utils.ImageUtils.java Source code

Introduction

Here is the source code for com.l1j5.web.common.utils.ImageUtils.java

Source

/*
 * ImageUtils.java 2011.02.15
 *
 * Copyright (c) 2010, MEI By Seok Kyun. Choi. (?)
 * http://syaku.tistory.com
 * 
 * GNU Lesser General Public License
 * http://www.gnu.org/licenses/lgpl.html
 */

package com.l1j5.web.common.utils;

import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.image.BufferedImage;
import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;

import javax.imageio.ImageIO;

import org.apache.commons.lang.StringUtils;
import org.apache.log4j.Logger;

import com.l1j5.web.common.utils.image.AnimatedGifEncoder;
import com.l1j5.web.common.utils.image.GifDecoder;

public class ImageUtils {
    private static Logger log = Logger.getLogger(ImageUtils.class);

    public static void createThumbnail(String load, String save, String type, int w, int h) {

        try {
            BufferedInputStream stream_file = new BufferedInputStream(new FileInputStream(load));
            createThumbnail(stream_file, save, type, w, h);
        } catch (Exception e) {
            log.error(e);
        }

    }

    public static void createThumbnail(BufferedInputStream stream_file, String save, String type, int w, int h) {
        try {

            if (StringUtils.equals(StringUtils.lowerCase(type), "gif")) {
                getGifImageThumbnail(stream_file, save, type, w, h);
            } else {
                getImageThumbnail(stream_file, save, type, w, h);
            }

        } catch (Exception e) {
            log.error(e);
        }

    }

    public static void getImageThumbnail(BufferedInputStream stream_file, String save, String type, int w, int h) {

        try {
            File file = new File(save);
            BufferedImage bi = ImageIO.read(stream_file);

            int width = bi.getWidth();
            int height = bi.getHeight();
            if (w < width) {
                width = w;
            }
            if (h < height) {
                height = h;
            }

            BufferedImage bufferIm = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
            Image atemp = bi.getScaledInstance(width, height, Image.SCALE_AREA_AVERAGING);

            Graphics2D g2 = bufferIm.createGraphics();
            g2.drawImage(atemp, 0, 0, width, height, null);
            ImageIO.write(bufferIm, type, file);
        } catch (Exception e) {
            log.error(e);
        }

    }

    public static void getGifImageThumbnail(BufferedInputStream stream_file, String save, String type, int w,
            int h) {

        GifDecoder dec = new GifDecoder();
        AnimatedGifEncoder enc = new AnimatedGifEncoder();
        dec.read(stream_file);

        int cnt = dec.getFrameCount();

        int delay = 0;
        int width = 0;
        int height = 0;

        try {
            enc.start(save);
            enc.setRepeat(0);

            for (int i = 0; i < cnt; i++) {
                BufferedImage frame = dec.getFrame(i);
                delay = dec.getDelay(i);

                width = frame.getWidth();
                height = frame.getHeight();
                if (w < width) {
                    width = w;
                }
                if (h < height) {
                    height = h;
                }

                BufferedImage destimg = new BufferedImage(width, height, BufferedImage.TYPE_4BYTE_ABGR);
                Graphics2D g = destimg.createGraphics();

                g.drawImage(frame, 0, 0, width, height, null);
                enc.setDelay(delay);

                enc.addFrame(destimg);
            }

            enc.finish();
        } catch (Exception ex) {
            log.error(ex);
        }
    }

    public static void createThumbnail(String load, String save, String type, int w) {

        try {
            BufferedInputStream stream_file = new BufferedInputStream(new FileInputStream(load));
            createThumbnail(stream_file, save, type, w);
        } catch (Exception e) {
            log.error(e);
        }

    }

    public static void createThumbnail(BufferedInputStream stream_file, String save, String type, int w) {
        try {

            if (StringUtils.equals(StringUtils.lowerCase(type), "gif")) {
                getGifImageThumbnail(stream_file, save, type, w);
            } else {
                getImageThumbnail(stream_file, save, type, w);
            }

        } catch (Exception e) {
            log.error(e);
        }

    }

    public static void getImageThumbnail(BufferedInputStream stream_file, String save, String type, int w) {

        try {
            File file = new File(save);
            BufferedImage bi = ImageIO.read(stream_file);

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

            double ratio = (double) height / width;
            height = (int) (w * ratio);
            if (w < width) {
                width = w;
            }

            BufferedImage bufferIm = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
            Image atemp = bi.getScaledInstance(width, height, Image.SCALE_AREA_AVERAGING);

            Graphics2D g2 = bufferIm.createGraphics();
            g2.drawImage(atemp, 0, 0, width, height, null);
            ImageIO.write(bufferIm, type, file);
        } catch (Exception e) {
            log.error(e);
        }

    }

    public static void getGifImageThumbnail(BufferedInputStream stream_file, String save, String type, int w) {

        GifDecoder dec = new GifDecoder();
        AnimatedGifEncoder enc = new AnimatedGifEncoder();
        dec.read(stream_file);

        int cnt = dec.getFrameCount();

        int delay = 0;
        int width = 0;
        int height = 0;

        try {
            enc.start(save);
            enc.setRepeat(0);

            for (int i = 0; i < cnt; i++) {
                BufferedImage frame = dec.getFrame(i);
                delay = dec.getDelay(i);

                width = frame.getWidth();
                height = frame.getHeight();

                double ratio = (double) height / width;
                height = (int) (w * ratio);
                if (w < width) {
                    width = w;
                }

                BufferedImage destimg = new BufferedImage(width, height, BufferedImage.TYPE_4BYTE_ABGR);
                Graphics2D g = destimg.createGraphics();

                g.drawImage(frame, 0, 0, width, height, null);
                enc.setDelay(delay);

                enc.addFrame(destimg);
            }

            enc.finish();
        } catch (Exception ex) {
            log.error(ex);
        }
    }

    public static void main(String[] args) {
        ImageUtils.createThumbnail("D:\\Project\\Uploads\\stylebook\\guest\\23.jpg",
                "D:\\Project\\Uploads\\stylebook\\guest\\thumb\\23.jpg", "jpg", 120);
    }

}