Struct LiveImageSignals 

pub struct LiveImageSignals {
    pub frame_size: Signal<Option<(u32, u32)>>,
    pub status: Signal<LiveImageStatus>,
}

The two Signals an attachment writes: a source’s size and status as the window’s last layout saw them. A widget showing a live image owns them from construction, so they exist before it mounts and survive a switch to another source.

Fields

frame_size: Signal<Option<(u32, u32)>>

The size layout uses: the buffer’s, else the size hint; None with neither. Written only by the layout pre-pass and by an attach. Bind it at Relayout.

status: Signal<LiveImageStatus>

Written only by the layout pre-pass and by an attach. Bind it at RepaintOnly, and at AccessibilityOnly where it changes what is announced.

Implementations

impl LiveImageSignals

pub fn new(source: &LiveImageSource) -> Self

Signals holding source’s current size and status.

Trait Implementations

impl Clone for LiveImageSignals

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for LiveImageSignals

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

Formats the value using the given formatter.

impl Default for LiveImageSignals

fn default() -> Self

Signals for no source yet: no size, Disconnected. An attach writes the source’s.