This has a few classes: the model is the list of pictures for the current
dive, the delegate is how this pictures will be displayed on screen, the
widget is the collection of delegates, and the DivePictureThumbnailThread
is a worker-thread to generate the thumbnails so the UI will not freeze.
[Dirk Hohndel: added the new files to subsurface.pro]
Signed-off-by: Tomaz Canabrava <tomaz.canabrava@intel.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>