Struct ManagedHitTester 

pub struct ManagedHitTester;

A hit tester that walks the visual tree directly.

A visual is hit when the point lies within its bounds. Subtrees are skipped when the visual is invisible, rejected by the filter, or clips its content to its bounds and the point lies outside of them, or has a clip geometry that does not contain the point. Children are tested before their parent and in front-to-back order: by descending Z index, then by descending position in the visual children.

Hit testing with a geometry follows the same rules with the geometry in place of the point: a visual is hit when the rectangle of its bounds and the geometry intersect, and the result tells how. It needs the geometry implementations of the render interface.

This is the fallback for presentation sources without a renderer-backed hit tester. It only knows about bounds: it does not look at what a visual actually draws, so a visual is hit anywhere within its bounds even where it draws nothing.

Implementations

impl ManagedHitTester

pub const fn new() -> Self

Creates the hit tester.

Trait Implementations

impl Clone for ManagedHitTester

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for ManagedHitTester

impl Debug for ManagedHitTester

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for ManagedHitTester

fn default() -> Self

Returns the “default value” for a type.

impl IHitTester for ManagedHitTester

fn hit_test( &self, p: Point, root: &Visual, filter: Option<&dyn Fn(&Visual) -> bool>, ) -> Vec<Ref<Visual>>

Hit tests a location to find the visuals at the specified point, topmost first.

fn hit_test_first( &self, p: Point, root: &Visual, filter: Option<&dyn Fn(&Visual) -> bool>, ) -> Option<Ref<Visual>>

Hit tests a location to find the first (topmost) visual at the specified point.

fn hit_test_geometry( &self, geometry: &Geometry, root: &Visual, filter: Option<&dyn Fn(&Visual) -> bool>, ) -> Vec<GeometryHitTestResult>

Hit tests a geometry to find the visuals intersecting a region, topmost first.

fn hit_test_first_geometry( &self, geometry: &Geometry, root: &Visual, filter: Option<&dyn Fn(&Visual) -> bool>, ) -> Option<GeometryHitTestResult>

Hit tests a geometry to find the first (topmost) visual intersecting a region.