Struct HoverManager 

pub struct HoverManager { /* private fields */ }

Manages hover state history for all input points

Records hit test results for mouse and touch inputs over multiple frames:

• DragStart detection (requires movement threshold over multiple frames)
• Hover-over event detection
• Multi-touch gesture detection
• Input path analysis

The manager maintains a separate history for each active input point.

Implementations

impl HoverManager

pub fn new() -> Self

Create a new empty HoverManager

pub fn push_hit_test(&mut self, input_id: InputPointId, hit_test: FullHitTest)

Push a new hit test result for a specific input point

The most recent result is always at index 0 for that input point. If the history is full, the oldest frame is dropped.

pub fn remove_input_point(&mut self, input_id: &InputPointId)

Remove an input point’s history (e.g., when touch ends)

pub fn get_current(&self, input_id: &InputPointId) -> Option<&FullHitTest>

Get the most recent hit test result for an input point

Returns None if no hit tests have been recorded for this input point.

pub fn get_current_mouse(&self) -> Option<&FullHitTest>

Get the most recent mouse cursor hit test (convenience method)

pub fn get_frame( &self, input_id: &InputPointId, frames_ago: usize, ) -> Option<&FullHitTest>

Get the hit test result from N frames ago for an input point

Returns None if the requested frame is not in history.

pub fn get_history( &self, input_id: &InputPointId, ) -> Option<&VecDeque<FullHitTest>>

Get the entire hover history for an input point (most recent first)

pub fn get_active_input_points(&self) -> Vec<InputPointId>

Get all currently tracked input points

pub fn frame_count(&self, input_id: &InputPointId) -> usize

Get the number of frames in history for an input point

pub fn clear(&mut self)

Clear all hover history for all input points

pub fn clear_input_point(&mut self, input_id: &InputPointId)

Clear history for a specific input point

pub fn has_sufficient_history_for_gestures( &self, input_id: &InputPointId, ) -> bool

Check if we have enough frames for gesture detection on an input point

DragStart detection requires analyzing movement over multiple frames. This returns true if we have at least 2 frames of history.

pub fn any_has_sufficient_history_for_gestures(&self) -> bool

Check if any input point has enough history for gesture detection

Trait Implementations

impl Clone for HoverManager

fn clone(&self) -> HoverManager

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for HoverManager

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

Formats the value using the given formatter.

impl Default for HoverManager

fn default() -> Self

Returns the “default value” for a type.

impl PartialEq for HoverManager

fn eq(&self, other: &HoverManager) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for HoverManager