GifUtil给gif图片添加文字、图片水印

gif4j给gif图片添加文字、图片水印

最近在做一个给gif图片添加图片水印的工作，在网上查了下好多童鞋推荐使用gif4j。在此将自己的使用过程在此做下笔记。

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操作步骤

1. 下载gif4j jar
   官方下载地址：
   http://www.gif4j.com/download.htm
   由于该软件是非开软项目因此直接使用时会有gif4j相应的标记
2. 代码【代码里边已经做了相应的注释大概应该可以看懂，在此就不做过多说明了】

package com.lenovo;
import java.awt.Color;

import java.awt.Font;

import java.awt.Point;

import java.awt.image.BufferedImage;

import java.io.File;

import java.io.IOException;
import javax.imageio.ImageIO;
import com.gif4j.GifDecoder;
import com.gif4j.GifEncoder;
import com.gif4j.GifImage;
import com.gif4j.GifTransformer;
import com.gif4j.TextPainter;
import com.gif4j.Watermark;

/**
 * 
 * @author liao
 *
 */
public class GifUtil {

    /**

     * 缩放gif图片

     *

     * @param src

     * @param dest

     * @param width

     * @param height

     * @throws IOException

     */

    public static void makeGif(File src, File dest, int width, int height)

            throws IOException {

        GifImage gifImage = GifDecoder.decode(src);// 创建一个GifImage对象.

        GifImage resizeIMG = GifTransformer.resize(gifImage, width, height,

                true);

        GifEncoder.encode(resizeIMG, dest);

    }





    public static void makeGif(String src, String dest, int width, int height)

            throws IOException {

        GifImage gifImage = GifDecoder.decode(new File(src));// 创建一个GifImage对象.

        makeGif(new File(src), new File(dest), gifImage.getScreenWidth() / 2,

                gifImage.getScreenHeight() / 2);

    }





    public static void makeGif(File src, File dest) throws IOException {

        GifImage gifImage = GifDecoder.decode(src);// 创建一个GifImage对象.

        makeGif(src, dest, gifImage.getScreenWidth() / 2, gifImage

                .getScreenHeight() / 2);

    }





    public static void makeGif(String src, String dest) throws IOException {

        makeGif(new File(src), new File(dest));

    }









    /**

     * 在图片中加文字水印

     * @param src

     * @param watermarkText

     * @param dest

     * @throws IOException

     */

    public static void addTextWatermarkToGif(File src, String watermarkText, File dest)throws IOException {

    //水印初始化、设置（字体、样式、大小、颜色）

        TextPainter textPainter = new TextPainter(new Font("黑体", Font.ITALIC, 12));

        textPainter.setOutlinePaint(Color.WHITE);

        BufferedImage renderedWatermarkText = textPainter.renderString(watermarkText, true);



        //图片对象

        GifImage gf = GifDecoder.decode(src);



        //获取图片大小

        int iw = gf.getScreenWidth();

        int ih = gf.getScreenHeight();



        //获取水印大小

        int tw = renderedWatermarkText.getWidth();

        int th = renderedWatermarkText.getHeight();



        //水印位置

        Point p = new Point();

        p.x = iw - tw - 5;

        p.y = ih - th - 4;



        //加水印

        Watermark watermark = new Watermark(renderedWatermarkText, p);

        gf = watermark.apply(GifDecoder.decode(src), true);



        //输出

        GifEncoder.encode(gf, dest);

    }

    /**

     * 在图片中加图片水印

     * @param src

     * @param watermarkText

     * @param dest

     * @throws IOException

     */
    public static void addImageWatermarkToGif(File src, String watermarkPath, File dest)throws IOException {

            BufferedImage renderedWatermarkText =ImageIO.read(new File(watermarkPath));

            //图片对象
            GifImage gf = GifDecoder.decode(src);
            //获取图片大小
            int iw = gf.getScreenWidth();
            int ih = gf.getScreenHeight();
            //获取水印大小
            int tw = renderedWatermarkText.getWidth();
            int th = renderedWatermarkText.getHeight();
            //水印位置
            Point p = new Point();
            p.x = 10;
            p.y = 20;

            //加水印
            Watermark watermark = new Watermark(renderedWatermarkText, p);
            //水印透明度
            watermark.setTransparency(1);


            gf = watermark.apply(GifDecoder.decode(src), false);



            //输出

            GifEncoder.encode(gf, dest);

        }


    public static void main(String[] arg) throws Exception{

//    GifUtil.addTextWatermarkToGif(new File("d:\\10.gif"), "@搞笑狂妞", new File("d:\\11.gif"));
    GifUtil.addImageWatermarkToGif(new File("d:\\gif\\10.gif"), "d:\\gif\\3.png", new File("d:\\gif\\4.gif"));




    }

}