Struct HitTester

pub struct HitTester {
    pub stats: HitTestStats,
}

Hit testing engine for determining event targets from layout

Fields

stats: HitTestStats

Performance statistics

Implementations

impl HitTester

pub fn new() -> Self

Create a new hit tester

pub fn hit_test( &mut self, point: Point, layout_root: &LayoutNode, ) -> Result<Vec<ComponentId>, EventError>

Perform hit testing to find all components at the given point Returns components in order from top-most to bottom-most

pub fn hit_test_depth_first( &mut self, point: Point, layout_root: &LayoutNode, ) -> Result<Vec<ComponentId>, EventError>

Perform hit testing with depth-first search (alternative algorithm)

pub fn hit_test_top( &mut self, point: Point, layout_root: &LayoutNode, ) -> Result<Option<ComponentId>, EventError>

Find the top-most component at the given point

pub fn hit_test_region( &mut self, region: Rect, layout_root: &LayoutNode, ) -> Result<Vec<ComponentId>, EventError>

Find all components within a rectangular region

pub fn reset_stats(&mut self)

Reset hit testing statistics

pub fn get_stats(&self) -> &HitTestStats

Get hit testing statistics

Trait Implementations

impl Debug for HitTester

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

Formats the value using the given formatter.

impl Default for HitTester

fn default() -> Self

Returns the “default value” for a type.