Struct External

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pub struct External {
    pub width: f32,
    pub height: f32,
    pub source: ExternalSource,
    pub opacity: f32,
}

Expand description

A widget that defers its pixels to an external GL texture producer.

The widget itself is non-interactive and produces no messages. Wrap it in a crate::widget::pressable::Pressable (or similar) when input capture is needed.

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§width: f32

Reserved width in logical pixels.

§height: f32

Reserved height in logical pixels.

§source: ExternalSource

Source of the GL texture sampled at draw time.

§opacity: f32

Opacity multiplier in [0.0, 1.0].

Implementations§

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impl External

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pub fn new(width: f32, height: f32, source: ExternalSource) -> Self

Build a new external-content widget reserving width × height logical pixels.

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pub fn opacity(self, opacity: f32) -> Self

Override the opacity multiplier. Default: 1.0.

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pub fn preferred_size(&self, _max_width: f32) -> (f32, f32)

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pub fn draw(&self, canvas: &mut Canvas, rect: Rect)

Trait Implementations§

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impl<Msg: Clone> From<External> for Element<Msg>

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fn from(e: External) -> Self

Converts to this type from the input type.

Auto Trait Implementations§

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impl !UnwindSafe for External

Blanket Implementations§

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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impl<T> BorrowMut<T> for 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> Downcast<T> for T

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fn downcast(&self) -> &T

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impl<T> Downcast for T
where T: Any,

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Convert Box<dyn Trait> (where Trait: Downcast) to Box<dyn Any>. Box<dyn Any> can then be further downcast into Box<ConcreteType> where ConcreteType implements Trait.

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Convert Rc<Trait> (where Trait: Downcast) to Rc<Any>. Rc<Any> can then be further downcast into Rc<ConcreteType> where ConcreteType implements Trait.

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fn as_any(&self) -> &(dyn Any + 'static)

Convert &Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &Any’s vtable from &Trait’s.

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Convert &mut Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &mut Any’s vtable from &mut Trait’s.

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Convert Arc<Trait> (where Trait: Downcast) to Arc<Any>. Arc<Any> can then be further downcast into Arc<ConcreteType> where ConcreteType implements Trait.

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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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impl<T> Instrument for T

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

Instruments this type with the provided [Span], returning an Instrumented wrapper. Read more

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Calls U::from(self).

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

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Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

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where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

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