package JingJiaGuo;
import javax.imageio.*;
import java.awt.image.*;
import java.io.*;
public class Image
{
public Image(String path)
throws IOException{
bi=ImageIO.read(new File(path));
weight=bi.getWidth();
height=bi.getHeight();
}
public void SaveTo(String path,String formatname,int maxlen,boolean flag)
throws FileNotFoundException,IOException{
int nw=weight,nh=height;
if(flag){
if(weight>maxlen){
nw=maxlen;
nh=height*nw/weight;
if(nh>maxlen){
nh=maxlen;
nw=weight*nh/height;
}
}
if(height>maxlen){
nh=maxlen;
nw=weight*nh/height;
if(nw>maxlen){
nw=maxlen;
nh=height*nw/weight;
}
}
}else{
nw=nh=maxlen;
}
int imagetype=BufferedImage.TYPE_INT_RGB;
if(formatname!="jpeg")imagetype=BufferedImage.TYPE_4BYTE_ABGR_PRE;
ByteArrayOutputStream bous=new ByteArrayOutputStream();
BufferedImage tmp=new BufferedImage(nw,nh,imagetype);
tmp.getGraphics().drawImage(bi,0,0,nw,nh,null);
ImageIO.write(tmp,formatname,bous);
FileOutputStream fos=new FileOutputStream(path);
fos.write(bous.toByteArray());
fos.close();
}
public int weight,height;
public BufferedImage bi;
}
暂时未支持动态的gif,不过好像有个开源的gif89的一个开源库，里面有支持动态的gif图像处理的,记下学习笔记
posted on 2009-05-13 22:19
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学习笔记