Adapt synoptic items to use current scene API
This PR fixes few issues relative to Qt5:
- Remove
scene
from any constructor ofQGraphicsItem
- Avoid to access to
self.scene()
in case it is not initialized
Closes #1025 (closed)
This PR fixes few issues relative to Qt5:
scene
from any constructor of QGraphicsItem
self.scene()
in case it is not initializedCloses #1025 (closed)