Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*****************************************************************************
 * BitmapUtil.java
 *****************************************************************************
 * Copyright  2011-2014 VLC authors and VideoLAN
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
 *****************************************************************************/

import android.content.Context;
import android.graphics.Bitmap;

public class Main {
    public static Bitmap scaleDownBitmap(Context context, Bitmap bitmap, int width) {
        if (bitmap != null) {

            try {
                final float densityMultiplier = context.getResources().getDisplayMetrics().density;
                int bitmapHeight = bitmap.getHeight();
                int bitmapWidth = bitmap.getWidth();
                int w, h, x, y;
                if (bitmapHeight > (bitmapWidth * 3) / 4) {
                    w = bitmapWidth;
                    h = (bitmapWidth * 3) / 4;
                    x = 0;
                    y = (bitmapHeight - h) / 2;
                } else if (bitmapWidth > (bitmapHeight * 4) / 3) {
                    h = bitmapHeight;
                    w = (bitmapHeight * 4) / 3;
                    y = 0;
                    x = (bitmapWidth - w) / 2;
                } else {
                    w = bitmapWidth;
                    h = bitmapHeight;
                    x = 0;
                    y = 0;
                }

                bitmap = Bitmap.createBitmap(bitmap, x, y, w, h);
                int dstWidth = (int) (width * densityMultiplier);
                int dstHeight = (dstWidth * 3) / 4;
                if (w > dstWidth || h > dstHeight) {
                    bitmap = Bitmap.createScaledBitmap(bitmap, dstWidth, dstHeight, false);
                }
            } catch (Exception ex) {
                //under some situation the the value of h becomes <= zero in createbitmap, adding a try catch and returning the original bitmap
                return bitmap;
            }
        }
        return bitmap;
    }
}