Adds auto_set_content_size for UIScrollview and subclasses.

[markrickert]

So that you can add a bunch of things to a scrollview and then call auto_set_content_size and it will not change frame but automatically set the contentSize based on the scroll view's contents (with optional padding)

[markrickert]

Once #195 is merged, I'll modify this PR to pull out the subview size calculation into its own method so that it's not repeated in both auto_set_content_size & resize_to_fit_subviews

[GantMan]

This is awesome.

I'd like to bring up a major issue that is starting to rear it's head. @twerth your feedback on this idea would be most appreciated.

this is auto_set_content_size
on labels we have resize_to_fit_text alias size_to_fit
and on UIViews we have resize_to_fit_subviews

Since Mark's code here is not actually resizing a scrollview, should we possibly add aliases to the others, taking the auto_set prefix?

It would be nice to add some conformity in this

We remember one method that changes depending on the object. I'm going to suggest auto_set_content_size and auto_set_frame_size as the 2 options.

[twerth]

I agree to having some conformity in these names.

IMO, auto_set_content_size means it will automatically set content size when something happens. That's the way I read it. I'd rather that be named something that suggests it's going to happen right now and only right now.

[markrickert]

I see your point. I picked "auto_set" because it automatically sets it based on the subviews. I'm open to a different name though 👍

[twerth]

I'd actually like to eventually have an "auto_set" where it does automaticallyl set it when something changes. But that's a bigger feature.

Imagine you do this st.auto_resize_to_fit_children = true and anytime a child's frame changes it sets the parent if needed and applicable

[twerth]

It's long, but how about: resize_content_to_fit_subviews assuming that's exactly what it does.

I'm a big believer in "make a method name as short as possible and be completely clear, and no shorter"

[GantMan]

Also, resize_to_fit_subviews will need documentation on the site along side with whatever the name ends up being.

I'm 👍 with resize_content_to_fit_subviews.

Playing with 🔥
What about view_refit and content_refit ?
It meets all needs. Name says what it is, and it's short/clean.

[twerth]

I personally don't like view_refit, it's a bit unclear, but I'm curious what Mark thinks.

[markrickert]

I'm not a fan of the shorter name. not descriptive enough. It's a complex task we're trying to describe in just a few words.

if we're gonna go with resize_content_to_fit_subviews we should also change the name of the other method to resize_frame_to_fit_subviews, no?

[GantMan]

/giphy Take my ball and go home.

[twerth]

Yeah, that makes sense @markrickert. I like that. Leave the alias for now though for backwards compatibility.

[markrickert]

Cool. I've renamed the method as well as changing the frame setter and creating an alias to the old method.

[markrickert]

Tests passed :)

[markrickert]

New feature for resize_frame_to_fit_subviews:

Allows you to pass :only_width or :only_height so that things aren't resized that you don't want to be :)

Useful for when you have views inside a uiview that don't extend all the way to the right and you only want to resize the height of the frame.

[markrickert]

@GantMan @twerth i think this one is ready to go. 3 new tests with 26 new assertions!

I'll write documentation once it's merged and a new version is released.

[GantMan]

Mark adding tests:

[markrickert]

lol

[GantMan]

Hey @markrickert I just searched for this today on the docs. Let me know if you want any help adding them! I need to go through anyway and add docs for my stuff.