android的PhotoShop

不说废话，相信大家可以看懂

/**

 * 图片处理类
 * @author teng
 *
 */
public class Photoshop {
/**
* 设置图片的大小
* @param src
* @param weight
* @param height
* @return
*/
public Bitmap SetPhotoSize(Bitmap src,int weight,int height){
if(src!=null){
int w=src.getWidth();
int h=src.getHeight();

float scaleweight=((float)weight)/w;
float scaleheight=((float)height)/h;
Matrix matrix=new Matrix();
matrix.postScale(scaleweight, scaleheight);
//Bitmap newbitmap=null;
//newbitmap=Bitmap.createScaledBitmap(src, weight, height, true);
return Bitmap.createBitmap(src,0,0,w,h,matrix,true);
}
else{
Log.e("SetPhotoSize", "图片为空，无法修改大小！！");
return null;
}
}
/**
* 保存图片到文件夹的根目录
* @param photo
* @param photoname
*/
public void SavePhoto(Bitmap photo,String photoname){
File file=new File("/mnt/sdcard/DCIM/",photoname+".jpg");
FileOutputStream out=null;
try {
out=new FileOutputStream(file);
photo.compress(CompressFormat.JPEG, 100, out);
out.close();
} catch (FileNotFoundException e) {
// TODO 自动生成的 catch 块
e.printStackTrace();
} catch (IOException e) {
// TODO 自动生成的 catch 块
e.printStackTrace();
}
}
/**
* 对图片进行旋转
* @param bitmap
* @return
*/
public Bitmap TurnPhoto(Bitmap bitmap){
Matrix matrix=new Matrix();
matrix.postRotate((float)90.0);  
       return Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, false);
}


/**
* 添加边框
* @param resources  getresources();
* @param bm
* @param res
* @return
*/
public Bitmap addBigFrame(Resources resources,Bitmap bm,int res){
Bitmap bitmap=decodeBitmap(resources, res);
Drawable[] array=new Drawable[2];
array[0]=new BitmapDrawable(bm);
Bitmap b=SetPhotoSize(bitmap, bm.getWidth(), bm.getHeight());
array[1]=new BitmapDrawable(b);
LayerDrawable layer=new LayerDrawable(array);
return drawableToBitmap(layer);

}
/**
*添加水印
* @param src
* @param watermark
* @return
*/
public Bitmap addWaterMark(Bitmap src,Bitmap watermark){
if(src!=null){
int w=src.getWidth();
int h=src.getHeight();

int markw=watermark.getWidth();
int marky=watermark.getHeight();
Bitmap newwatermark=Bitmap.createBitmap(w, h, Config.ARGB_8888);
Canvas cv=new Canvas(newwatermark);
//分别将两图片画到画布上
cv.drawBitmap(src,0,0,null);
cv.drawBitmap(watermark, 0, 0, null);
cv.save(Canvas.ALL_SAVE_FLAG);
cv.restore();
return newwatermark;
}
else{
Log.e("addWaterMark", "图片为空，无法添加水印！！");
return null;
}
}
/**
* 从drawable转到Bitmap方法
* @param drawable
* @return
*/
public Bitmap drawableToBitmap(Drawable drawable){
BitmapDrawable bitmap=(BitmapDrawable)drawable;
return bitmap.getBitmap();
}
/**
* 将资源文件的R.drawable.*转换为Bitmap
* @param resorrces
* @param res
* @return
*/
public Bitmap decodeBitmap(Resources resorrces,int res){

return BitmapFactory.decodeResource(resorrces, res);
}

/**
* 怀旧图片 
* 公式 R=0.393*R+0.769*G+0.189*B;
* G=0.349*R+0.686*G+0.168*B;
* B=0.272*R+0.534*G+0.131*B;
* @param bitmap
* @return
*/
public Bitmap oldRember(Bitmap bitmap){
//long start=System.currentTimeMillis();
int width=bitmap.getWidth();
int height=bitmap.getHeight();
Bitmap bmp=Bitmap.createBitmap(width,height,Bitmap.Config.RGB_565);
int pixColor=0;

int pixR=0;
int pixG=0;
int pixB=0;

int newR=0;
int newG=0;
int newB=0;
int[] pixels=new int[width*height];   //获得所有的像素点
bitmap.getPixels(pixels, 0, width, 0, 0, width, height);

for(int i=0;i<height;i++){
for(int k=0;k<width;k++){
pixColor=pixels[width*i+k];
pixR=Color.red(pixColor);
pixG=Color.green(pixColor);
pixB=Color.blue(pixColor);
newR=(int)(0.393*pixR+0.769*pixG+0.189*pixB);
newG=(int)(0.349*pixR+0.686*pixG+0.168*pixB);
newB=(int)(0.272*pixR+0.534*pixG+0.131*pixB);
int newColor=Color.argb(255, newR>255?255:newR,newG>255?255:newG , newB>255?255:newB);
pixels[width*i+k]=newColor;
}
}
bmp.setPixels(pixels, 0, width, 0, 0, width, height);
return bmp;
}
/**
* 光照效果
* @param bitmap
* strength调节光的强度
* @return
*/
public Bitmap Sunshine(Bitmap bitmap){
int width=bitmap.getWidth();
int height=bitmap.getHeight();
Bitmap bmp=Bitmap.createBitmap(width,height,Bitmap.Config.RGB_565);
int pixColor=0;

int pixR=0;
int pixG=0;
int pixB=0;

int newR=0;
int newG=0;
int newB=0;

int centerx=width/2;
int centery=height/2;
int radius=Math.min(centerx, centery);

final float strength=150f;  //光照强度100--150
int[] pixels=new int[width*height];
bitmap.getPixels(pixels, 0, width, 0, 0, width, height);

int pos=0;
for(int i=0,length=height-1;i<length;i++){
for(int k=1,len=width-1;k<len;k++){
pos=i*width+k;
pixColor=pixels[pos];
pixR=Color.red(pixColor);
pixG=Color.green(pixColor);
pixB=Color.blue(pixColor);

newR=pixR;
newG=pixG;
newB=pixB;
int distance=(int) (Math.pow((centery-i),2)+Math.pow((centerx-k), 2));
if(distance<radius*radius){
int result=(int) (strength*(1.0-Math.sqrt(distance)/radius));
newR=pixR+result;
newB=pixB+result;
newG=pixG+result;
}
newR=Math.min(255, Math.max(0, newR));
newB=Math.min(255, Math.max(0, newB));
newG=Math.min(255, Math.max(0, newG));
pixels[pos]=Color.argb(255, newR, newG, newB);
}
}
bmp.setPixels(pixels, 0, width, 0, 0, width, height);
return bmp;
}

/**
* 圆角图片
* @param bitmap
* @param roundpx
* @return
*/
public Bitmap getRoundBitmap(Bitmap bitmap,float roundpx){
Bitmap out=Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), Config.ARGB_8888);
Canvas canvas=new Canvas(out);

final int  color=0xff424242;
final Paint paint=new Paint();
Rect rect =new Rect(0,0,bitmap.getWidth(),bitmap.getHeight());
final RectF rectf=new RectF(rect);

paint.setAntiAlias(true);
canvas.drawARGB(0, 0, 0, 0);
paint.setColor(color);
canvas.drawRoundRect(rectf, roundpx, roundpx, paint);

paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN));   //先绘一个圆形，再绘一个Bitmap，交际即为圆角图片
canvas.drawBitmap(bitmap, rect,rect,paint);

return out;

}

public String getPhotoName(){
Date data=new Date(System.currentTimeMillis());
SimpleDateFormat dataFormat=new SimpleDateFormat("'IMG'_yyyyMMdd_HHmmss");
return dataFormat.format(data);

}



public Bitmap getCircleImage(Bitmap src ,int min){

final Paint paint=new Paint();
paint.setAntiAlias(true);
Bitmap target=Bitmap.createBitmap(min, min, Config.ARGB_8888);

Canvas canvas=new Canvas(target);
canvas.drawCircle(min/2, min/2, min/2, paint);
paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN));
canvas.drawBitmap(src, 0, 0, paint);

return target;
}
}