I am pretty new to SS and have got the ImageGallery set up OK. I need to be able to show all the images in the gallery on the entry page to the gallery and then have the individual albums selectable from a sub menu (which is working fine).
Hmm.. Right now you can't do it without extending the class, because all the queries are album dependent. If no current album is found, they return null. I'm wondering if it is worth adding a function that would return all images regardless of the album.
In any event, for now, you can just subclass ImageGalleryPage.php to something like MyImageGalleryPage and create a controller function like:
then create /mysite/templates/Includes/AlbumList.ss and do your <% control AllImages %> in there. That's probably the quickest solution.
I've decided this is probably something that the module should be able to do without any customization. You can now view images without the context of an album.
So, to achieve what you're looking for, first, run an SVN update to get the new code. Then you can create a custom AlbumList.ss. Copy the contents from image_gallery/templates/Includes/AlbumList.ss into mysite/templates/Includes/AlbumList.ss