Struct ViewSubset 

pub struct ViewSubset {
    pub scroll: Vec<f64>,
    pub open_resource: Option<String>,
    pub viewport: ViewRect,
    pub view_mode: Option<String>,
}

The broadcastable subset of a View — the region and resource a participant is looking at, minus the caret/selection.

Deliberately small and self-describing so it can travel inside the existing presence frame; it’s what an attach/follow binds the local viewport to. The caret (View::focus) is intentionally excluded: it already has a dedicated presence payload (Caret/Selection) landing in the per-key caret maps, so re-sending it here would double-broadcast and re-key it away from the widget scopes those renderers read.

Fields

scroll: Vec<f64>

Scroll offset(s) of the participant’s scrollable content.

open_resource: Option<String>

The resource the participant currently has open, if any.

viewport: ViewRect

The participant’s viewport rect in physical pixels.

view_mode: Option<String>

The participant’s current view mode, if the app has one.

Implementations

impl ViewSubset

pub fn from_view(view: &View) -> ViewSubset

Project a full View onto the subset presence broadcasts. Drops View::focus (broadcast separately as caret/selection presence).

pub fn is_empty(&self) -> bool

True at the starting point of a freshly-launched app that has not scrolled, opened a resource, or been laid out — lets the broadcaster skip the first frame’s no-op send.

Trait Implementations

impl Clone for ViewSubset

fn clone(&self) -> ViewSubset

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ViewSubset

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

Formats the value using the given formatter.

impl Default for ViewSubset

fn default() -> ViewSubset

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for ViewSubset

fn deserialize<__D>( __deserializer: __D, ) -> Result<ViewSubset, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for ViewSubset

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

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for ViewSubset