Snapshots a cross-fade operation between two images with the given progress.
Until the first call to gtk.snapshot.Snapshot.pop, the start image will be snapshot. After that call, the end image will be recorded until the second call to gtk.snapshot.Snapshot.pop.
Calling this function requires two subsequent calls to gtk.snapshot.Snapshot.pop.
progress between 0.0 and 1.0
Snapshots a cross-fade operation between two images with the given progress.
Until the first call to gtk.snapshot.Snapshot.pop, the start image will be snapshot. After that call, the end image will be recorded until the second call to gtk.snapshot.Snapshot.pop.
Calling this function requires two subsequent calls to gtk.snapshot.Snapshot.pop.