Struct TouchScreenEvent

pub struct TouchScreenEvent {
    pub contacts: HashMap<PointerEventPhase, Vec<TouchContact>>,
    pub injector_contacts: HashMap<EventPhase, Vec<TouchContact>>,
}

A TouchScreenEvent represents a set of contacts and the phase those contacts are in.

For example, when a user touches a touch screen with two fingers, there will be two TouchContacts. When a user removes one finger, there will still be two contacts but one will be reported as removed.

The expected sequence for any given contact is:

1. fidl_fuchsia_ui_input::PointerEventPhase::Add
2. fidl_fuchsia_ui_input::PointerEventPhase::Down
3. 0 or more fidl_fuchsia_ui_input::PointerEventPhase::Move
4. fidl_fuchsia_ui_input::PointerEventPhase::Up
5. fidl_fuchsia_ui_input::PointerEventPhase::Remove

Additionally, a fidl_fuchsia_ui_input::PointerEventPhase::Cancel may be sent at any time signalling that the event is no longer directed towards the receiver.

Fields

contacts: HashMap<PointerEventPhase, Vec<TouchContact>>

Deprecated. To be removed with https://fxbug.dev/42155652. The contacts associated with the touch event. For example, a two-finger touch would result in one touch event with two TouchContacts.

Contacts are grouped based on their current phase (e.g., down, move).

injector_contacts: HashMap<EventPhase, Vec<TouchContact>>

The contacts associated with the touch event. For example, a two-finger touch would result in one touch event with two TouchContacts.

Contacts are grouped based on their current phase (e.g., add, change).

Implementations

impl TouchScreenEvent

pub fn record_inspect(&self, node: &Node)

Trait Implementations

impl Clone for TouchScreenEvent

fn clone(&self) -> TouchScreenEvent

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for TouchScreenEvent

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

Formats the value using the given formatter.

impl PartialEq for TouchScreenEvent

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