Why common Compose operations like clip and border allowing creation of shapes are not supported in ...

# compose

[Mehdi Haghgoo]

Why common Compose operations like clip and border allowing creation of shapes are not supported in the Android framework or are somehow hidden from the average developer?

[romainguy]

What do you mean? You'd want features like borders to work on Views for instance?

[Mehdi Haghgoo]

Yes, I looked up material.io, which is mostly specifications on shapes for example and no Android implementations are provided.

[Mehdi Haghgoo]

But, I see nice shapes in some Google apps like Keep and Google Photos Widget. How are these outlines created?

[Albert Chang]

https://developer.android.com/reference/android/view/View#setOutlineProvider(android.view.ViewOutlineProvider)

[Mehdi Haghgoo]

It's rather limited. I can only get round and rectangular outlines using such shapes defined as drawables and then used as background. I don't find an easy way to create custom outlines and borders in non-Compose code.

[Albert Chang]

You can use any path by overriding getOutline method of ViewOutlineProvider and using Outline.setPath (or any other methods in Outline class).