Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 *    Copyright (C) 2016 Murat Demir <mopened@gmail.com>
 *
 *    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 3 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, see <http://www.gnu.org/licenses/>.
 */

import android.graphics.Bitmap;

import android.graphics.Matrix;

public class Main {
    public static Bitmap scaleTo(Matrix scaler, Bitmap source, int targetWidth, int targetHeight,
            boolean fitInScreen) {
        float bitmapWidthF = source.getWidth();
        float bitmapHeightF = source.getHeight();

        float bitmapAspect = bitmapWidthF / bitmapHeightF;
        float viewAspect = (float) targetWidth / targetHeight;

        float scale = 0;
        float scaleH = targetHeight / bitmapHeightF;
        float scaleW = targetWidth / bitmapWidthF;

        if (fitInScreen && scaleH < scaleW) {
            scale = scaleH;
        } else if (fitInScreen && scaleH >= scaleW) {
            scale = scaleW;
        } else if (bitmapAspect > viewAspect) {
            scale = scaleH;
        } else {
            scale = scaleW;
        }

        if (scale != 0 && (scale < .9F || scale > 1F)) {
            scaler.setScale(scale, scale);
        } else {
            scaler = null;
        }

        Bitmap b1;
        if (scaler != null) {
            // this is used for minithumb and crop, so we want to filter here.
            b1 = Bitmap.createBitmap(source, 0, 0, source.getWidth(), source.getHeight(), scaler, true);
            source.recycle();
        } else {
            b1 = source;
        }
        return b1;
    }
}