java九宫格切割缩放并合并

//缩放
public void zoomImage(File out,String name,int rtype,int cw,int ch,int w,int h) throws Exception
{
BufferedImage bimg0 = ImageIO.read(new File(out, name));
int bw=bimg0.getWidth();
int bh=bimg0.getHeight();
int type = -1;
String format = null;
if (name.toLowerCase().endsWith("png")) {
format = "PNG";
type = BufferedImage.TYPE_INT_ARGB;

} else {
format = "JPG";
type = BufferedImage.TYPE_INT_RGB;
}
int zw=0;
int zh=0;
switch(rtype)
{
case 1:
//宽度ZOOM
zw=w-2*cw;
zh=ch;
break;
case 2:
//高度ZOOM
zw=cw;
zh=h-2*ch;
break;
case 3:
//高宽ZOOM
zw=w-2*cw;
zh=h-2*ch;
break;
}
BufferedImage image=new BufferedImage(zw,zh,type);
Graphics g = image.getGraphics();
g.drawImage(bimg0,0, 0,zw,zh, 0, 0, bw, bh, null);
ImageIO.write(image, format, new File(out, name));
}
//合并9图
public void mergeImage(File out,String name,String[] images,int w,int h) throws Exception
{
BufferedImage bimg0 = ImageIO.read(new File(out.getParentFile(), name));
int type = -1;
String format = null;
if (name.toLowerCase().endsWith("png")) {
format = "PNG";
type = BufferedImage.TYPE_INT_ARGB;

} else {
format = "JPG";
type = BufferedImage.TYPE_INT_RGB;
}

BufferedImage image=new BufferedImage(w,h,type);
Graphics g = image.getGraphics();

int x=0;
int y=0;
for(int i=0;i<images.length;i++)
{
BufferedImage bimg = ImageIO.read(new File(out, images[i]));
g.drawImage(bimg,x,y,bimg.getWidth(),bimg.getHeight(),null);
if(i%3==0)
x=x+bimg.getWidth();
else if(i%3==1)
x=x+bimg.getWidth();
else if(i%3==2)
x=0;
//g.drawImage(img, dx1, dy1, dx2, dy2, sx1, sy1, sx2, sy2, observer)


if(i%3==2)
y=y+bimg.getHeight();


}
ImageIO.write(image, format, new File(out.getParentFile(), name));
}
/**
* 九宫格切割处理图片
*/
private void cut9Image(File out,String name,int w,int h) throws Exception
{
File cache=new File(out.getPath()+"/cache");
if(!cache.exists())
cache.mkdir();
//原图
BufferedImage bimg0 = ImageIO.read(new File(out, name));
String[] images=new String[9];
List list=new ArrayList();

int w0=bimg0.getWidth();
int h0=bimg0.getHeight();
int type = -1;
String format = null;
if (name.toLowerCase().endsWith("png")) {
format = "PNG";
type = BufferedImage.TYPE_INT_ARGB;

} else {
format = "JPG";
type = BufferedImage.TYPE_INT_RGB;
}
//切割成9部分
/**
* 边角四块的高度和宽度
*/
int cornerwidth=3;
int cornerheight=3;
//左上
BufferedImage image1=new BufferedImage(cornerwidth,cornerheight,type);
//右上
BufferedImage image2=new BufferedImage(cornerwidth,cornerheight,type);
//左下
BufferedImage image3=new BufferedImage(cornerwidth,cornerheight,type);
//右下
BufferedImage image4=new BufferedImage(cornerwidth,cornerheight,type);

int topwidth=w0-2*cornerwidth;
int topheight=cornerheight;
//TOP
BufferedImage topbimg=new BufferedImage(topwidth,topheight,type);
int leftwidth=cornerwidth;
int leftheight=h0-2*cornerheight;
//LEFT
BufferedImage leftbimg=new BufferedImage(leftwidth,leftheight,type);
int midwidth=w0-2*cornerwidth;
int midheight=h0-2*cornerheight;
//middle
BufferedImage midbimg=new BufferedImage(midwidth,midheight,type);
int rightwidth=cornerwidth;
int rightheight=h0-2*cornerheight;
//right
BufferedImage rightbimg=new BufferedImage(rightwidth,rightheight,type);
int bottomwidth=w0-2*cornerwidth;
int bottomheight=cornerheight;
//bottom
BufferedImage bottombimg=new BufferedImage(bottomwidth,bottomheight,type);

Graphics g1 = image1.getGraphics();
Graphics g2 = image2.getGraphics();
Graphics g3 = image3.getGraphics();
Graphics g4 = image4.getGraphics();
Graphics gtop = topbimg.getGraphics();
Graphics gleft = leftbimg.getGraphics();
Graphics gmid = midbimg.getGraphics();
Graphics gright = rightbimg.getGraphics();
Graphics gbottom = bottombimg.getGraphics();
String cutname="";
//左上
g1.drawImage(bimg0, 0, 0,cornerwidth,cornerheight, 0, 0, cornerwidth, cornerheight, null);
cutname="image1."+format;
ImageIO.write(image1, format, new File(cache, cutname));
images[0]=cutname;
list.add(image1);
//top
gtop.drawImage(bimg0,0, 0, topwidth, topheight, cornerwidth, 0, cornerwidth+topwidth,topheight, null);
cutname="top."+format;
ImageIO.write(topbimg, format, new File(cache, cutname));
zoomImage(cache,cutname,1,cornerwidth,cornerheight,w,h);
images[1]=cutname;
list.add(topbimg);
//右上
g2.drawImage(bimg0,0, 0, cornerwidth, cornerheight,cornerwidth+topwidth, 0, 2*cornerwidth+topwidth,cornerheight,  null);
cutname="image2."+format;
ImageIO.write(image2, format, new File(cache, cutname));
images[2]=cutname;
list.add(image2);
//左
gleft.drawImage(bimg0,0, 0, leftwidth, leftheight, 0, cornerheight, 0 + leftwidth, cornerheight+leftheight,  null);
cutname="left."+format;
ImageIO.write(leftbimg, format, new File(cache, cutname));
zoomImage(cache,cutname,2,cornerwidth,cornerheight,w,h);
images[3]=cutname;
list.add(leftbimg);
//中
gmid.drawImage(bimg0,0, 0, midwidth, midheight, cornerwidth, cornerheight, cornerwidth+midwidth, cornerheight+midheight,  null);
cutname="mid."+format;
ImageIO.write(midbimg, format, new File(cache,cutname));
zoomImage(cache,cutname,3,cornerwidth,cornerheight,w,h);
images[4]=cutname;
list.add(midbimg);
//右
gright.drawImage(bimg0,0, 0, rightwidth, rightheight, cornerwidth+midwidth, cornerheight,2*cornerwidth+midwidth, cornerheight+midheight,  null);
cutname="right."+format;
ImageIO.write(rightbimg, format, new File(cache, cutname));
zoomImage(cache,cutname,2,cornerwidth,cornerheight,w,h);
images[5]=cutname;
list.add(rightbimg);
//左下
g3.drawImage(bimg0, 0, 0, cornerwidth, cornerheight,0, cornerheight+leftheight, 0 + cornerwidth, 2*cornerheight+leftheight,  null);
cutname="image3."+format;
ImageIO.write(image3, format, new File(cache,cutname));
images[6]=cutname;
list.add(image3);
//底
gbottom.drawImage(bimg0,0, 0, bottomwidth, bottomheight, cornerwidth, cornerheight+midheight, cornerwidth+bottomwidth, 2*cornerheight+midheight,  null);
cutname="bottom."+format;
ImageIO.write(bottombimg, format, new File(cache,cutname));
zoomImage(cache,cutname,1,cornerwidth,cornerheight,w,h);
images[7]=cutname;
list.add(bottombimg);
//右下
g4.drawImage(bimg0,0, 0, cornerwidth, cornerheight, cornerwidth+bottomwidth, cornerheight+rightheight, 2*cornerwidth+bottomwidth, 2*cornerheight+rightheight,  null);
cutname="image4."+format;
ImageIO.write(image4, format, new File(cache,cutname));
images[8]=cutname;
list.add(image4);

mergeImage(cache,name,images,w,h);

for(int i=0;i<images.length;i++)
{
File file=new File(cache,images[i]);
if(file.exists())
file.delete();
}
cache.deleteOnExit();

}