This improves over the previous code for handling
snapshot objects and cutouts. Basically any opaque object
above a snapshot should be obscuring it. That is true
unless a crazy filter is applied, or the snapshot object
is itself the source of a map or proxy.
This also uses eina_tiler instead of a custom (and really
bad) algorithm to compute the obscure regions.
This make save() work on snapshot objects, provided the call
is done from inside render_post.
Also, this saves the filtered output of an image, rather than
its source pixels. Any call to save() on a filtered image must
be done from post-render as well.
Fixes T2102
@feature
So, it seems my previous commit 79abba52c5 was a job
half done, as I forgot to remove Evas.Image from the inheritance
tree of all new evas image classes.
This is a bit artificial, as all image objects are still based on
the Evas.Image main class. The inheritance tree alone does not
give much information on what features are supported by which
class (eg. only Efl.Canvas.Image supports the file interface for
file_set).
Efl.Canvas.Snapshot and Efl.Canvas.Proxy are specialized
classes previously implemented as features of Evas.Image.
Note: this half of the work, as I suffered from a bad
merge and rebase with my work branch on top of master.
Xavi Artigas
Jean-Philippe Andre
Tom Hacohen