Keep layers up-to-date with window contentsScale

[dannygreg]

CoreAnimation gives you no help at all in maintaining the correct contentsScale for layers. Anything sitting in an RBLView should have this taken care of.

[jspahrsummers]

Does this only apply to layer hosting? I'm pretty sure backing layers are updated properly.

[dannygreg]

Yes, hosting only.

[jspahrsummers]

So what would that mean with RBLView, which is meant to be layer-backed? We should update all sublayers or something?

[dannygreg]

Yeah… there is a delegate callback you can hook into and they also need setting manually when they are first created. Seems exactly like the kind of thing Rebel should handle for us.

[jspahrsummers]

I'm still a bit confused about the use case we're trying to solve. RBLView can't really be layer hosted, since it sets wantsLayer before anything has a chance to change the layer property.

Are we trying to fix sublayers of RBLView.layer, or layer-hosting subviews of RBLView?

[dannygreg]

The use case is that every time we want to use a layer for anything we need to handle contentsScale changes manually. Unlike anything on NSView which is handled automatically.

RBLView should handle that automatically for any of it's layers and sublayers/subviews.