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github / Rebel

Cocoa framework for improving AppKit
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Keep layers up-to-date with window contentsScale #9

Open dannygreg opened 12 years ago

dannygreg commented 12 years ago

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 commented 12 years ago

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

dannygreg commented 12 years ago

Yes, hosting only.

jspahrsummers commented 12 years ago

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

dannygreg commented 12 years ago

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 commented 12 years ago

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 commented 12 years ago

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.