Hey! Could Compose’s platform gesture APIs be exte...

# compose

[Sargun Vohra]

Hey! Could Compose’s platform gesture APIs be extended to support trackpad rotation and smart zoom (like macOS’s two-finger double tap)?

The existing `PanStart`/`PanMove`/`PanEnd` and `ScaleStart`/`ScaleChange`/`ScaleEnd` APIs are useful; Nucleus on desktop wires them up to macOS trackpad gestures, so I can get really nice map controls with MapLibre Compose. I'd mainly need the equivalent API wiring through ComposeScene.sendPointerEvent and pointer input.

Smart zoom would ideally be a distinct event with a position, so the app can decide what to zoom to. Is extending the existing APIs in that direction something Google/Jetbrains would consider? I assume it'd have to land in Android's Jetpack Compose and then in Compose Multiplatform?

[Sargun Vohra]

relevant Apple docs:
- magnify(with:): pinch gesture on trackpad. Nucleus wires this to Compose's scale events, in a draft
- rotate(with:): rotate gesture on trackpad. Compose has no equivalent
- smartMagnify(with:): two finger double tap on trackpad. Compose has no equivalent

[shikasd]

Can you please file a feature request? Not a guarantee that it'd be addressed, but better to have it in the issue tracker than here 🙂

[shikasd]

Might be more relevant for the Compose desktop tracker than the Google one btw

[Sargun Vohra]

Will do. I think right now, Android is the only platform where pan and scale gestures are already wired up by default, so I was unsure if the Google tracker was actually more relevant for it or not