Android Open Source - Quiz Image Utility

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License

The source code is released under:

GNU General Public License

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Java Source Code

/*
 * Copyright (c) 2013, Maciej Laskowski. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *//ww  w.j a v a  2s  . c o m
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  
 * 
 * This code 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
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact mlaskowsk@gmail.com if you need additional information
 * or have any questions.
 */

package com.mlaskows.quiz.utility;

import android.graphics.Bitmap;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;

/**
 * Utility to manipulate images.
 * 
 * @author Maciej Laskowski
 * 
 */
public class ImageUtility {

  /**
   * Private constructor to avoid instantiating.
   */
  private ImageUtility() {
    ;
  }

  /**
   * Static method for resizing {@link Drawable} objects.
   * 
   * @param drawable
   *            object to resize
   * @param width
   *            new object width
   * @param height
   *            new object height
   * @return resized {@link Drawable}
   */
  @SuppressWarnings("deprecation")
  public static Drawable resizeDrawable(Drawable drawable, int width, int height) {
    if ((drawable == null) || !(drawable instanceof BitmapDrawable)) {
      return drawable;
    }
    Bitmap b = ((BitmapDrawable) drawable).getBitmap();
    Bitmap bitmapResized = Bitmap.createScaledBitmap(b, width, height, false);
    return new BitmapDrawable(bitmapResized);
  }

  /**
   * Static method for resizing {@link Drawable} objects.
   * 
   * @param drawable
   *            object to resize
   * @param scaleFactor
   *            scale factor
   * @return resized {@link Drawable}
   */
  public static Drawable resizeDrawable(Drawable drawable, float scaleFactor) {
    int width = Math.round(drawable.getIntrinsicWidth() * scaleFactor);
    int height = Math.round(drawable.getIntrinsicHeight() * scaleFactor);
    return resizeDrawable(drawable, width, height);
  }

}

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