macOS Example project - Implement dynamic height for cells

[christoff-1992]

Need to implement an example for dynamic height for the macOS Example, at the point of asking for the size in sizeForItemAt*, the collection view has not been loaded into the view so we can not make use of makeItem(withIdentifier*.

We will need to load a dummy cell and set the calculated width like the iOS example does.

[zdnk]

is there iOS example? using autolayout in code would be the best :)

[zenangst]

Hey @zdnk, there is a demo project for iOS included in the library. Simply run the Blueprints.xcodeproject and select the example target :)

[zdnk]

From what I discovered, it is running the AutoLayout but getting the prototype cell, laying it out and caching its size. However doesnt iOS provide autosizing with AutoLayout by default without such implementation?

EDIT: it also seems that the performance is poor :(

[zenangst]

@zdnk Oh like that, I thought you were wondering about an example in general, my bad!
I'm a bit unsure, I've yet to implement a collection view layout with autolayout based constraints in order to figure out the item size. I think this is a bit of a chicken and eggs scenario because you don't know the size of the item at the time when prepare is invoked, I might be wrong here.

What performance is poor? Using autolayout of the demo project that we provide?

[zdnk]

I see. Well AutoLayout is way too slow anyway. I am considering usage of Texture, PinLayout or FlexLayout.

[zenangst]

@zdnk all good alternatives! Best of luck :)

[christoff-1992]

We may be able to do this with the preferred layout attributes, I will take a look once this has been merged into master.