resize Bitmap image

scaled_bitmap.java

  /**
   * get Aspaect ratio image resize point
   *
   * @param src      원본 비트맵 이미지
   * @param maxValue 원하는 값
   * @return 리사이징된 비트맵의 width, height가 설정된 Point객체 혹은 null
   */
  public static Point createScaledBitmapSize(Bitmap src, int maxValue) {
    Point p = null;
    if (src != null) {
      if (maxValue > 0) {
        int width = src.getWidth();
        int newWidth = width;
        int height = src.getHeight();
        int newHeight = height;
        float ratio = 0.0f;

        if (width > height) {
          if (maxValue < width) {
            ratio = maxValue / (float) width;
            newHeight = (int) (height * ratio);
            newWidth = maxValue;
          }
        }
        else {
          if (maxValue < height) {
            ratio = maxValue / (float) height;
            newWidth = (int) (width * ratio);
            newHeight = maxValue;
          }
        }
        p = new Point(newWidth, newHeight);
      }
    }
    return p;
  }