Struct SliverHitTestEntry 

pub struct SliverHitTestEntry { /* private fields */ }

A hit test entry used by RenderSliver.

The coordinate system used by this hit test entry is relative to the AxisDirection of the target sliver.

Dart’s SliverHitTestEntry subclasses HitTestEntry; here it is the entry’s target, carrying the sliver and the two positions. It becomes a HitTestEntry with From.

Implementations

impl SliverHitTestEntry

pub fn new( target: AnyRenderSliver, main_axis_position: f64, cross_axis_position: f64, ) -> SliverHitTestEntry

Creates a sliver hit test entry.

pub fn target(&self) -> AnyRenderSliver

The RenderSliver that was hit.

pub fn main_axis_position(&self) -> f64

The distance in the AxisDirection from the edge of the sliver’s painted area (as given by the SliverConstraints::scroll_offset) to the hit point.

This can be an unusual direction, for example in the AxisDirection::Up case this is a distance from the bottom of the sliver’s painted area.

pub fn cross_axis_position(&self) -> f64

The distance to the hit point in the axis opposite the SliverConstraints::axis.

If the cross axis is horizontal (i.e. the SliverConstraints::axis_direction is either AxisDirection::Down or AxisDirection::Up), then this is a distance from the left edge of the sliver. If the cross axis is vertical, then this is a distance from the top edge of the sliver.

This is always a distance from the left or top of the parent, never a distance from the right or bottom.

Trait Implementations

impl Clone for SliverHitTestEntry

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 SliverHitTestEntry

impl Debug for SliverHitTestEntry

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

Formats the value using the given formatter.

impl From<SliverHitTestEntry> for HitTestEntry

fn from(entry: SliverHitTestEntry) -> HitTestEntry

Converts to this type from the input type.

impl HitTestTarget for SliverHitTestEntry

fn retained_handle(&self) -> Option<HandleId>

The arena object this target delivers to, if it is one, so a result kept across turns can retain it: Dart keeps the object alive by holding it in the path.

fn handle_event( &self, app: &mut App, event: &PointerEvent, _entry: &HitTestEntry, )

Override this method to receive events.