pub struct WidgetState { /* private fields */ }
Expand description

Generic state for all widgets in the hierarchy.

This struct contains the widget’s layout rect, flags indicating when the widget is active or focused, and other state necessary for the widget to participate in event flow.

It is provided to paint calls as a non-mutable reference, largely so a widget can know its size, also because active and focus state can affect the widget’s appearance. Other than that, widgets will generally not interact with it directly, but it is an important part of the WidgetPod struct.

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impl WidgetState

pub fn paint_rect(&self) -> Rect

The paint region for this widget.

For more information, see WidgetPod::paint_rect.

pub fn layout_rect(&self) -> Rect

The rectangle used when calculating layout with other widgets

Trait Implementations§

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impl Clone for WidgetState

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fn clone(&self) -> WidgetState

Returns a copy of the value. Read more
1.0.0 · source§

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

Performs copy-assignment from source. Read more

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

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fn borrow(&self) -> &T

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

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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

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fn into(self) -> U

Calls U::from(self).

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

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impl<T> Pointable for T

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const ALIGN: usize = mem::align_of::<T>()

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type Init = T

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unsafe fn init(init: <T as Pointable>::Init) -> usize

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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

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unsafe fn drop(ptr: usize)

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Performs the conversion.
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Performs the conversion.
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type Output = T

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for Twhere U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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type Error = <U as TryFrom<T>>::Error

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

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

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