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Length

Enum Length 

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pub enum Length {
    Pixel(f32),
    Percent(f32),
}
Expand description

A length along one axis: absolute in pixels, or a fraction of the parent’s content area in percent. Passed to width and height.

Constructed with the constructor methods:

  • Length::pixel — an absolute size in pixels; participates in animation (via over) and in the parent’s natural size;
  • Length::percent — a fraction of the parent in percent (100.0 — 100%, 50.0 — half); resolved on the second layout pass relative to the parent and overrides the pixel size. The fraction itself is not animated.
let full = Shape::rect().width(Length::percent(100.0)); // the parent's full width
let fixed = Shape::rect().width(Length::pixel(120.0));  // exactly 120 px

Variants§

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Pixel(f32)

An absolute size in pixels.

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Percent(f32)

A fraction of the parent’s content area in percent (100.0 — 100%).

Implementations§

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impl Length

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pub fn pixel(value: f32) -> Length

An absolute length in pixels (<= 0 — “auto”, size by content).

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pub fn percent(value: f32) -> Length

A length as a fraction of the parent in percent: percent(100.0) — 100%, percent(50.0) — half.

Trait Implementations§

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impl Clone for Length

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fn clone(&self) -> Length

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more
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impl Copy for Length

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impl Debug for Length

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

Formats the value using the given formatter. Read more
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impl PartialEq for Length

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fn eq(&self, other: &Length) -> bool

Tests for self and other values to be equal, and is used by ==.
1.0.0 (const: unstable) · Source§

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl StructuralPartialEq for Length

Auto Trait Implementations§

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
where T: ?Sized,

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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> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. 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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impl<T, U> Into<U> for T
where U: From<T>,

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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> ToOwned for T
where T: Clone,

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type Owned = T

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

Creates owned data from borrowed data, usually by cloning. Read more
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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 T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.