Skip to main content

ClippedItem

Struct ClippedItem 

Source
pub struct ClippedItem { /* private fields */ }
Expand description

Wraps a child so its rendered output is clipped to the child’s own layout rect. When the child collapses to a zero rect (e.g. a section hidden via display:none), the clip is empty, so nothing inside draws — even a widget left with a stale rect or one that paints at fixed coordinates. Layout is unchanged: layout_node passes through to the wrapped child.

The pointer stops at the same edge. A press or a move landing outside the clip never reaches the subtree, so a widget cut off by the clip cannot take the click that visually belongs to whatever is drawn over it — clipped away is gone, not merely invisible. Everything else passes through: a release or a CursorLeft is how a widget that was pressed or hovered inside the clip settles again, and swallowing those would leave it stuck in a state the pointer has already left.

Implementations§

Source§

impl ClippedItem

Source

pub fn new(inner: Box<dyn LayoutItem>) -> Self

Source

pub fn along(inner: Box<dyn LayoutItem>, axis: ClipAxis) -> Self

A clip that cuts along axis only, leaving the other free.

What a strip of items wants when it has to stop at its ends but not across its thickness: a tab bar or a toolbar cut where the room runs out, whose items still carry a focus ring, a badge or a shadow past the strip’s own edge. CSS cannot express this — one axis set to hidden forces the other out of visible — so a row that only wanted its ends cut has to clip the overflow it meant to keep.

Trait Implementations§

Source§

impl Component for ClippedItem

Source§

fn view(&self) -> RenderNode

Source§

fn on_event(&mut self, event: &Event) -> EventResult

Source§

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

Human-readable widget type name for the devtools tree inspector.
Source§

impl LayoutItem for ClippedItem

Source§

fn layout_node(&self) -> NodeId

Source§

fn pointer_opaque(&self) -> bool

Whether this widget stands in front of whatever its siblings drew underneath it, for a pointer event its parent is hit-testing. Read more

Auto Trait Implementations§

Blanket Implementations§

Source§

impl<T> Any for T
where T: 'static + ?Sized,

Source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
Source§

impl<T> Borrow<T> for T
where T: ?Sized,

Source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
Source§

impl<T> BorrowMut<T> for T
where T: ?Sized,

Source§

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
Source§

impl<T> From<T> for T

Source§

fn from(t: T) -> T

Returns the argument unchanged.

Source§

impl<T> Instrument for T

Source§

fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
Source§

fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
Source§

impl<T, U> Into<U> for T
where U: From<T>,

Source§

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

Source§

impl<T, U> TryFrom<U> for T
where U: Into<T>,

Source§

type Error = Infallible

The type returned in the event of a conversion error.
Source§

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
Source§

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

Source§

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
Source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
Source§

impl<T> WithSubscriber for T

Source§

fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
Source§

fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more