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package bitmaps;

import com.swetake.util.Qrcode;

import javax.imageio.ImageIO;

import java.awt.*;

import java.awt.image.BufferedImage;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileOutputStream;

/**

* @author CasterWx AntzUhl

* @site https://github.com/CasterWx

* @company Henu

* @create 2018-12-30-22:39

*/

public class GifToPng {

public static void main(String[] args) {

Qrcode qrcode = new Qrcode();

qrcode.setQrcodeErrorCorrect('M');

qrcode.setQrcodeEncodeMode('B');

qrcode.setQrcodeVersion(3);

long startTime=System.currentTimeMillis();

try{

GifDecoder gd = new GifDecoder();

//要处理的图片

int status = gd.read(new FileInputStream(new File("img\\gif3.gif")));

if (status != GifDecoder.STATUS_OK) {

return;

}

AnimatedGifEncoder ge = new AnimatedGifEncoder();

//这里是关键，设置要替换成透明的颜色

ge.setTransparent(Color.WHITE);

//

ge.start(new FileOutputStream(new File("img\\gif3-get.gif")));

ge.setRepeat(0);

String content = "https://github.com/CasterWx" ;

byte []contentByte = content.getBytes("utf-8");

boolean [][]cidesOut = qrcode.calQrcode(contentByte) ;

for (int i = 0; i < gd.getFrameCount(); i++) {

//取得gif的每一帧

BufferedImage frame = gd.getFrame(i);

Graphics2D gs = frame.createGraphics() ;

gs.drawImage(frame,0,0,frame.getWidth(),frame.getHeight(),null);

int qrLength = frame.getHeight()-2*frame.getHeight()/10 ;

int mini = qrLength/cidesOut.length ;

int xbegin = (frame.getWidth() - mini*cidesOut.length)/2 ;

int ybegin = (frame.getHeight() - mini*cidesOut.length)/2 ;

for(int k=0;k<cidesOut.length;k++){

for(int j=0;j<cidesOut.length;j++){

if(cidesOut[j][k]){

gs.setColor(Color.BLACK);

gs.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP,1.0f));

gs.fillRect(j*mini+xbegin,k*mini+ybegin,mini,mini );

}

}

}

//File imagefile = new File("P"+i+".png");

//ImageIO.write(frame,"png",imagefile);

//你可以对每一帧做点什么，比如缩放什么的，这里就什么都不做了

int delay = gd.getDelay(i);

ge.setDelay(delay);

ge.addFrame(frame);

}

//输出图片

ge.finish();

System.out.println(System.currentTimeMillis()-startTime);

}catch(Exception e){

e.printStackTrace();

}

}

}