Struct TooltipWidget 

pub struct TooltipWidget { /* private fields */ }

The retained widget for a TooltipView: one OverlaySlot holding the plain panel, registered on every paint the latch reads open and on no other.

Registering nothing is the unmount (see the file header’s no-exit-fade decision): the root’s registry is per paint pass, so the frame this widget skips its registration is the frame the panel stops being painted and stops being routed to, with nothing to unregister and no ramp to run down.

Trait Implementations

impl Widget for TooltipWidget

fn layout(&mut self, ctx: &mut LayoutCtx<'_>, bc: &BoxConstraints) -> Size

Choose a size within bc and return it. The chosen size must satisfy bc (callers may additionally clamp via BoxConstraints::constrain).

fn paint(&mut self, ctx: &mut PaintCtx<'_>, _scene: &mut dyn PaintScene)

Emit draw commands for this widget into scene.

fn event(&mut self, ctx: &mut EventCtx<'_>, event: &InputEvent) -> EventResult

Handle an input event, optionally mutating application state through ctx and reporting whether it was consumed.

fn semantics(&self, _ctx: &mut SemanticsCtx)

Contribute this widget’s accessibility node(s) into ctx.

fn visit_children(&self, visitor: &mut dyn FnMut(&ChildPod))

Visit this widget’s owned ChildPods, in declaration (paint) order — the read-only seam that makes the retained hierarchy enumerable.

fn type_name(&self) -> &'static str

This widget’s concrete type name, for read-only tooling.

fn as_sliver(&mut self) -> Option<&mut (dyn SliverWidget + 'static)>

This widget as a sliver, if it speaks the sliver protocol — the opt-in seam a scrolling viewport lays its children out through (see crate::sliver and ChildPod::layout_sliver_child).