@Override
  public void setImageBounds(RectF imageBounds) {
    if (!imageBounds.equals(mImageBounds)) {
      mImageBounds.set(imageBounds);
      onTransformChanged();
      if (mImageBoundsListener != null) {
        mImageBoundsListener.onImageBoundsSet(mImageBounds);
      }
    }
  }
Sets the image bounds, in view-absolute coordinates.
samples/zoomable/src/main/java/com/facebook/samples/zoomable/DefaultZoomableController.java