package cn.com.basic.face.util;

import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.PorterDuff;
import android.graphics.PorterDuffXfermode;
import android.graphics.Rect;

public class BitmapUtil {

    public static Bitmap getCroppedBitmap(Bitmap bitmap) {
        int min = bitmap.getWidth() > bitmap.getHeight() ? bitmap.getHeight() : bitmap.getWidth();

        Bitmap output = Bitmap.createBitmap(min,
                min, Bitmap.Config.ARGB_8888);
        Canvas canvas = new Canvas(output);

        final int color = 0xff424242;
        final Paint paint = new Paint();
        final Rect rect = new Rect(0, 0, min, min);

        paint.setAntiAlias(true);
        canvas.drawARGB(0, 0, 0, 0);
        paint.setColor(color);
        canvas.drawCircle(min / 2, min / 2,
                min / 2, paint);
        paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));
        canvas.drawBitmap(bitmap, rect, rect, paint);
        return output;
    }

}