Summary:
Making the code simpler and handling the transition case
where elements are in the same layer (which was failing
/setting same zorders until now).
Reviewers: Mathieu_Du
Differential Revision: https://phabricator.freedesktop.org/D237
We should never let 3 objects to overlap at a same position, for that
we introduce a "rollback" feature and whenever such an editing happens,
we rollback object position to whatever it was before the move.
For example if the size has been serialized in a file, but the user has
not personalized the size, we want that whenever the restriction caps
change the size, the video should take the size of the track
restriction caps.
We know need to keep track of the current positionner.size even if
setting through caps size changes.
https://bugzilla.gnome.org/show_bug.cgi?id=739527
It adds metadata on the buffers and the mixer parses them.
This is done because we want to keep positionning properties
and set them on the dynamic mixer pad.
Conflicts:
ges/Makefile.am
