Enum Event 

pub enum Event {
    Pointer(Raw),
    Keys(Keys),
    Text(TextEvent),
    Action(Action),
    Command(CommandId),
    Tick(Tick),
    Viewport(Rect),
    Safe(Rect),
    Move(Move),
}

What a front end can say.

Taken by value rather than by reference: an Action can carry artwork or a pasted payload, and saying a thing happened hands it over.

Variants

Pointer(Raw)

What the pointer did, in screen space: a motion, a button edge, its leaving. What that comes to — a click, a drag, a hover — is resolved here, not by the front end.

Keys(Keys)

The keys this frame carries beside the pointer, as the front end’s focus rules read them.

Text(TextEvent)

How the front end’s editor ended the edit it was running: the text on a commit or a Tab, or a cancel.

Action(Action)

What an overlay or a menu emitted.

Command(CommandId)

A command invoked by name — a toolbar press, a chord, a palette pick. Resolved through the registry, so a command the session is not offering this frame does nothing.

Tick(Tick)

What time it is. A batch with no tick in it is a batch time did not pass during, and the session keeps the last one it was given.

Viewport(Rect)

The screen rect the canvas is laid out in. A batch with no resize in it keeps the last one, so a front end states this when the surface changes size rather than every call.

Safe(Rect)

The part of the viewport the front end’s own chrome leaves clear, which a framing centres in. Stated when the chrome changes.

Move(Move)

What the pointer did to the camera — a drag pan, a wheel notch, a pinch — in screen space. Applied before the pointer is resolved, so the frame’s gestures land under the camera as it now stands.

Trait Implementations

impl<'de> Deserialize<'de> for Event

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for Event

fn eq(&self, other: &Event) -> 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 Serialize for Event

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for Event