Support parallax in transition and fix alpha performance
Add ParallaxTransition class to perform ParallaxSource.updateValues()
on every frame. DetailsFragment sets ParallaxSource as a View tag during
setup.
Changed details parallax effect to reduce overdraw, now bitmap's bottom is
matching top of details_frame, solid_color's top is matching bottom of
details_frame. Their bounds will change during enter/exit transition.
Switch details_background_view to non overlapping rendering view to avoid
creating expensive layers in alpha animation.
Bug: none
Test: DetailsFragmentTest and visually inspect SupportLeanbackDemos
Change-Id: Iaac20e6c733a0e42e5f8eeef2b912b0e26e2f606
14 files changed