Main.java Source code

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Here is the source code for Main.java

Source

//package com.java2s;

import android.graphics.BitmapFactory;

public class Main {
    /**
     * Calculate an inSampleSize for use in a
     * {@link BitmapFactory.Options} object when decoding
     * bitmaps using the decode* methods from
     * {@link BitmapFactory}. This implementation calculates
     * the closest inSampleSize that will result in the final decoded bitmap
     * having a width and height equal to or larger than the requested width and
     * height. This implementation does not ensure a power of 2 is returned for
     * inSampleSize which can be faster when decoding but results in a larger
     * bitmap which isn't as useful for caching purposes.
     *
     * @param options   An options object with out* params already populated (run
     *                  through a decode* method with inJustDecodeBounds==true
     * @param reqWidth  The requested width of the resulting bitmap
     * @param reqHeight The requested height of the resulting bitmap
     * @return The value to be used for inSampleSize
     */
    public static int calculateInSampleSize(BitmapFactory.Options options, int reqWidth, int reqHeight) {
        // Raw height and width of image
        final int height = options.outHeight;
        final int width = options.outWidth;

        int inSampleSize = 1;

        if (height > reqHeight || width > reqWidth) {
            int widthSampleSize = 0;
            int heightSampleSize = 0;
            if (reqWidth < width) {
                widthSampleSize = Math.round((float) width / (float) reqWidth);
            }
            if (reqHeight < height) {
                heightSampleSize = Math.round((float) height / (float) reqHeight);
            }
            inSampleSize = Math.max(widthSampleSize, heightSampleSize);
        }
        return inSampleSize;
    }
}