public ActivityBuilder setMinCropWindowSize(int minCropWindowWidth, int minCropWindowHeight) {
      mOptions.minCropWindowWidth = minCropWindowWidth;
      mOptions.minCropWindowHeight = minCropWindowHeight;
      return this;
    }
the min size the crop window is allowed to be (in pixels).<br>
<i>Default: 42dp, 42dp</i>
core/src/main/java/com/theartofdev/edmodo/cropper/CropImage.java