Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
//License from project: Open Source License 

import android.graphics.Bitmap;

import android.graphics.Bitmap.Config;
import android.graphics.BitmapFactory;

import android.graphics.Canvas;

import android.graphics.Paint;
import android.graphics.PorterDuff.Mode;
import android.graphics.PorterDuffXfermode;
import android.graphics.Rect;

public class Main {
    /**
     * cut a circle from a bitmap
     *
     * @param picturePath complete path name for the file.
     * @param destCube the cube dimension of dest bitmap
     * @return the bitmap
     */
    public static Bitmap cutCircleFromBitmap(String picturePath, int destCube) {
        BitmapFactory.Options opts = new BitmapFactory.Options();

        opts.inDither = false; //Disable Dithering mode
        opts.inPurgeable = true; //Tell to gc that whether it needs free memory, the Bitmap can be cleared
        opts.inInputShareable = true; //Which kind of reference will be used to recover the Bitmap data after being clear, when it will be used in the future
        opts.inTempStorage = new byte[32 * 1024];

        Bitmap bitmapImg = BitmapFactory.decodeFile(picturePath, opts);

        int cube = destCube;

        if (bitmapImg == null)
            return null;

        int smallest = Math.min(bitmapImg.getWidth(), bitmapImg.getHeight());

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

        final int color = 0xff424242;
        final Paint paint = new Paint();

        int left = (int) ((bitmapImg.getWidth() - smallest) * 0.5);
        int top = (int) ((bitmapImg.getHeight() - smallest) * 0.5);

        final Rect rectSrc = new Rect(left, top, left + smallest, top + smallest);
        final Rect rectDest = new Rect(0, 0, cube, cube);

        paint.setAntiAlias(true);

        canvas.drawARGB(0, 0, 0, 0);

        paint.setColor(color);

        canvas.drawCircle(cube / 2, cube / 2, cube / 2, paint);

        paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN));

        canvas.drawBitmap(bitmapImg, rectSrc, rectDest, paint);

        bitmapImg.recycle();

        return output;
    }
}