Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.Canvas;

public class Main {
    /**
     * Makes a texture from any bitmap. 
     * (Texture should have size that is power of 2) 
     * @param bmp bitmap
     * @return BitmapDrawable that has size that is power of 2. Bitmap is not stretched, free space 
     * is filled with default color.
     */
    public static Bitmap makeTexture(Resources res, Bitmap bmp) {
        if (bmp == null) {
            throw new IllegalArgumentException("Bitmap can't be null");
        }

        int height = (int) roundPower2(bmp.getHeight());
        int width = (int) roundPower2(bmp.getWidth());

        Bitmap result = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);

        Canvas canvas = new Canvas(result);
        canvas.drawBitmap(bmp, 0, 0, null);

        return result;
    }

    /**
     * Finds greater nearest number that is power of 2
     * @return long
     */
    public static long roundPower2(final long x) {
        int rval = 256;

        while (rval < x)
            rval <<= 1;

        return rval;
    }
}