`struct` with a field of type `easing` is impossible to specify

[spikespaz]

Slint version: 1.3.0 (extension version ??? does every subproject have the same version) Platform: irrelevant (MacOS, Linux, Windows) Language: irrelevant, LSP/preview issue

Creating a struct with a field type of easing is impossible to represent.

struct SomeStyle {
  some-duration: duration,
  some-easing: easing,
}

component SomeWidget {
  in property <SomeStyle> style: {
    some-duration: 100ms,
    some-easing: ease-in-out, // SYNTAX ERROR
  };

  background: #202020;
  width: 20px;
  height: 40px;
  animate height { duration: style.some-duration; easing: style.some-easing; }
}

[spikespaz]

Has it been reproduced?

[ogoffart]

Thanks for reporting a bug.

The problem is that the easing keywords are not part of a namespace or enum so you can't name them outside of an expression that is itself an easing. We should probably add a Easing namespace or something like that.

[spikespaz]

I took a peak but truth be told had a hard time navigating this behemoth of a repo. I'll take another, more focused, look to see if I can contribute.

[ogoffart]

If you want to have a look at implementing that, this should be done in lookup.rs. Right now, the easing curves are in the EasingSpecific, which is only used if the type is an easing curve. But we could add an entry in BuiltinNamespaceLookup to access the.