Struct LiveImageAttachment 

pub struct LiveImageAttachment { /* private fields */ }

The UI-thread side of one attachment of a source to a widget, in one window. Clone is an Rc clone; !Send. The widget’s rebuild or destruction detaches it, as does the tree’s drop.

Implementations

impl LiveImageAttachment

pub fn consumer(&self) -> &LiveImageConsumer

What a widget hands Canvas::draw_live_image.

pub fn signals(&self) -> &LiveImageSignals

pub fn widget_id(&self) -> WidgetId

pub fn set_geometry(&self, geometry: ImageGeometry)

Record the placement the widget paints from, in its place_children, so automation and lookups through the tree see it.

pub fn geometry(&self) -> Option<ImageGeometry>

The placement last recorded; None before the first layout.

pub fn set_snapped_under(&self, transform: Option<Transform2D>)

Record, in place_children, the transform the placement was snapped to the device-pixel grid under: the widget’s effective transform (WidgetArena::effective_transform), or None when the placement does not snap. A transform scope changes without a layout pass; when this transform changes in a way that moves the snap (ImageGeometry::snaps_under either side), the tree lays the widget out again, so it snaps anew.

pub fn is_detached(&self) -> bool

Whether it was released: its widget was rebuilt or destroyed, or its tree dropped.

Trait Implementations

impl Clone for LiveImageAttachment

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 LiveImageAttachment

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

Formats the value using the given formatter.