Pudu programming language
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API reference

Std.Ui.Layout.hitTest

1 declaration

fn

hitTest: &Std.Ui.Layout.Layout -> Std.Ui.Canvas.Point -> Option[Int]

This is a callable function.

What it does

The frontmost meaningful node under a point.

Frontmost is last in painting order. Decoration is transparent to pointing,

so a background never takes a press meant for what it holds.

Read the signature

  • The text after the name is the type checked by Pudu.
  • Read arrows from left to right: inputs come first, and the final type is returned.
  • & borrows a value for this call instead of moving or copying it.
  • Names inside [ ] are type arguments, such as the item type held by a collection.
  • Option holds Some(value) or None when no value is available.

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