Struct NativeTouchPoint 

pub struct NativeTouchPoint {
    pub identifier: i32,
    pub client_x: i32,
    pub client_y: i32,
    pub screen_x: i32,
    pub screen_y: i32,
    pub offset_x: i32,
    pub offset_y: i32,
    pub page_x: i32,
    pub page_y: i32,
}

Represents a single touch point from a multi-touch event.

Each NativeTouchPoint corresponds to one finger or stylus currently touching the screen. The identifier field distinguishes between simultaneous touch points, enabling multi-finger gesture tracking.

Fields

identifier: i32

A unique identifier for this touch point.

The browser assigns a distinct identifier to each active touch. It remains constant for the duration of the touch (from touchstart to touchend), allowing the same finger to be tracked across touchmove events.

client_x: i32

The X coordinate of the touch relative to the viewport.

client_y: i32

The Y coordinate of the touch relative to the viewport.

screen_x: i32

The X coordinate of the touch relative to the screen.

screen_y: i32

The Y coordinate of the touch relative to the screen.

offset_x: i32

The X coordinate of the touch relative to the target element.

offset_y: i32

The Y coordinate of the touch relative to the target element.

page_x: i32

The X coordinate of the touch relative to the page.

page_y: i32

The Y coordinate of the touch relative to the page.

Implementations

impl NativeTouchPoint

Implementation of touch point extraction from DOM touch events.

pub fn extract_all(event: &Event) -> Vec<NativeTouchPoint>

Extracts all active touch points from a TouchEvent.

Iterates over the touches list of the given TouchEvent and builds a Vec<NativeTouchPoint> with each touch point’s identifier, viewport coordinates, screen coordinates, page coordinates, and offset coordinates relative to the target element.

The offset coordinates (offset_x, offset_y) are computed by subtracting the target element’s bounding rect from the touch’s client coordinates, since the browser Touch object does not provide offsetX/offsetY directly.

Arguments

• &Event: The native DOM touch event.

Returns

• Vec<NativeTouchPoint>: All currently active touch points.

pub fn extract_changed(event: &Event) -> Vec<NativeTouchPoint>

Extracts the changed touch points from a TouchEvent.

The changedTouches list contains touch points that have changed since the last touch event:

• For touchstart - newly added touch points.
• For touchmove - touch points that have moved.
• For touchend / touchcancel - removed touch points.

This is useful for determining which specific fingers were lifted in a touchend event, since the touches list no longer contains them.

Arguments

• &Event: The native DOM touch event.

Returns

• Vec<NativeTouchPoint>: The touch points that changed in this event.

impl NativeTouchPoint

pub fn get_identifier(&self) -> i32

pub fn get_mut_identifier(&mut self) -> &mut i32

pub fn set_identifier(&mut self, val: i32) -> &mut Self

pub fn get_client_x(&self) -> i32

pub fn get_mut_client_x(&mut self) -> &mut i32

pub fn set_client_x(&mut self, val: i32) -> &mut Self

pub fn get_client_y(&self) -> i32

pub fn get_mut_client_y(&mut self) -> &mut i32

pub fn set_client_y(&mut self, val: i32) -> &mut Self

pub fn get_screen_x(&self) -> i32

pub fn get_mut_screen_x(&mut self) -> &mut i32

pub fn set_screen_x(&mut self, val: i32) -> &mut Self

pub fn get_screen_y(&self) -> i32

pub fn get_mut_screen_y(&mut self) -> &mut i32

pub fn set_screen_y(&mut self, val: i32) -> &mut Self

pub fn get_offset_x(&self) -> i32

pub fn get_mut_offset_x(&mut self) -> &mut i32

pub fn set_offset_x(&mut self, val: i32) -> &mut Self

pub fn get_offset_y(&self) -> i32

pub fn get_mut_offset_y(&mut self) -> &mut i32

pub fn set_offset_y(&mut self, val: i32) -> &mut Self

pub fn get_page_x(&self) -> i32

pub fn get_mut_page_x(&mut self) -> &mut i32

pub fn set_page_x(&mut self, val: i32) -> &mut Self

pub fn get_page_y(&self) -> i32

pub fn get_mut_page_y(&mut self) -> &mut i32

pub fn set_page_y(&mut self, val: i32) -> &mut Self

Trait Implementations

impl Clone for NativeTouchPoint

fn clone(&self) -> NativeTouchPoint

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for NativeTouchPoint

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

Formats the value using the given formatter.

impl Default for NativeTouchPoint

fn default() -> NativeTouchPoint

Returns the “default value” for a type.

impl Eq for NativeTouchPoint

impl PartialEq for NativeTouchPoint

fn eq(&self, other: &NativeTouchPoint) -> 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 NativeTouchPoint