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43 feat(style): add support for origen-x and origen-y CSS properties by shridmishra · Pull Request #10760 · NativeScript/NativeScript · GitHub
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feat(style): add support for origen-x and origen-y CSS properties #10760

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PR Checklist


What is the current behavior?

CSS properties origen-x and origen-y are not supported. Developers must use view.origenX and view.origenY in code-behind to set transform origens.


What is the new behavior?

This PR adds CSS support for origen-x and origen-y:

  • These properties set the pivot point for transform-based animations like rotate, scale, etc.
  • Now you can define them via CSS like:
.my-view {
  origen-x: 1;
  origen-y: 0;
  rotate: 45;
}

Notes

Fixes #5991

Happy to add unit or UI tests if requested by maintainers — just let me know 🙌

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@shridmishra
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“Removed duplicate origenX/Y declarations and repositioned END comment. Let me know if anything else is needed 🙌”

@shridmishra
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I’ve now addressed your feedback:

✅ Removed the legacy origenX and origenY property registrations from ViewCommon

✅ Removed the public property declarations from the class

✅ Moved the //END Style property shortcuts comment below the new origenX and origenY declarations in index.d.ts

Let me know if anything else looks off or if further changes are needed .

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☁️ Nx Cloud last updated this comment at 2025-07-09 07:32:27 UTC

@CatchABus
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I’ve now addressed your feedback:

✅ Removed the legacy origenX and origenY property registrations from ViewCommon

✅ Removed the public property declarations from the class

✅ Moved the //END Style property shortcuts comment below the new origenX and origenY declarations in index.d.ts

Let me know if anything else looks off or if further changes are needed .

Thanks for taking care of those! I took a better look at the open issue and it seems to actually be about implementing css transform-origen. It's good to have the existing properties on style but I'm not sure if we should close the issue.

Create CSS properties for [origenX and origenY.](https://docs.nativescript.org/api-reference/classes/_ui_core_view_.view#origenx)

In CSS specification the corresponding property is called [transform-origen](https://developer.mozilla.org/en-US/docs/Web/CSS/transform-origen).

@shridmishra
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Added transform-origen CSS shorthand property support via ShorthandProperty:

  • Supports setting both origenX and origenY together via CSS like:

    .my-view {
      transform-origen: 0.25 0.75;
    }
  • Internally maps to origenX and origenY using property registration.

  • Getter reflects the current origen values as a string.

✅ Let me know if keyword support (like top, center, left) is desired — can extend it further.

Fixes requested functionality around transform-origen as noted in #5991.

@rigor789
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rigor789 commented Jul 9, 2025

Thanks @shridmishra for the PR, I do have a concern with the changes, that I would like to bring up with @NathanWalker and @CatchABus: origen-x and origen-y are not in the CSS Spec. I think we should try and follow the spec, and do a single transform-origen only, and keep the origenX/origenY as regular properties? Thoughts?

https://developer.mozilla.org/en-US/docs/Web/CSS/transform-origen

@CatchABus
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Thanks @shridmishra for the PR, I do have a concern with the changes, that I would like to bring up with @NathanWalker and @CatchABus: origen-x and origen-y are not in the CSS Spec. I think we should try and follow the spec, and do a single transform-origen only, and keep the origenX/origenY as regular properties? Thoughts?

https://developer.mozilla.org/en-US/docs/Web/CSS/transform-origen

I was thinking about the same thing but I noticed core also declares props like scaleX/Y and transformX/Y in style. Could it be by accident or does core need them on style to make transform shorthand work?

If safe, we should move all those to ViewCommon and keep valid css props to style as @rigor789 mentioned.

@rigor789
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rigor789 commented Jul 9, 2025

@CatchABus good point, there are some non-spec CSS properties in core already, which we could over time deprecate (and make them into custom css properties prefixed with a -- to follow the spec: https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_cascading_variables/Using_CSS_custom_properties). I mainly think we should try to stay close to the spec, especially with new things.

@shridmishra
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Thanks for the feedback @rigor789 and @CatchABus 🙌

I agree that sticking closely to the CSS spec makes sense, especially for new additions.

happy to refactor the PR accordingly!

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Create corresponding CSS properties for origenX and origenY
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