Dimension

floem::style

Struct Dimension 

pub struct Dimension(/* private fields */);
Expand description

A unit of linear measurement

This is commonly combined with [Rect], Point and Size<T>.

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impl Dimension

pub const fn length(val: f32) -> Dimension

An absolute length in some abstract units. Users of Taffy may define what they correspond to in their application (pixels, logical pixels, mm, etc) as they see fit.

pub const fn percent(val: f32) -> Dimension

A percentage length relative to the size of the containing block.

NOTE: percentages are represented as a f32 value in the range [0.0, 1.0] NOT the range [0.0, 100.0]

pub const fn auto() -> Dimension

The dimension should be automatically computed according to algorithm-specific rules regarding the default size of boxes.

pub fn calc(ptr: *const ()) -> Dimension

A calc() value. The value passed here is treated as an opaque handle to the actual calc representation and may be a pointer, index, etc.

The low 3 bits are used as a tag value and will be returned as 0.

pub unsafe fn from_raw(val: CompactLength) -> Dimension

Create a LengthPercentageAuto from a raw CompactLength.

§Safety

CompactLength must represent a valid variant for LengthPercentageAuto

pub fn into_raw(self) -> CompactLength

Get the underlying CompactLength representation of the value

pub fn into_option(self) -> Option<f32>

Get Length value if value is Length variant

pub fn is_auto(self) -> bool

Returns true if value is Auto

pub fn tag(self) -> usize

Get the raw CompactLength tag

pub fn value(self) -> f32

Get the raw CompactLength value for non-calc variants that have a numeric parameter

Trait Implementations§

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impl Clone for Dimension

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fn clone(&self) -> Dimension

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for Dimension

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

Formats the value using the given formatter. Read more
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impl From<LengthPercentage> for Dimension

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fn from(input: LengthPercentage) -> Dimension

Converts to this type from the input type.
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impl From<LengthPercentageAuto> for Dimension

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fn from(input: LengthPercentageAuto) -> Dimension

Converts to this type from the input type.
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impl From<PxPctAuto> for Dimension

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fn from(value: PxPctAuto) -> Self

Converts to this type from the input type.
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impl FromLength for Dimension

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fn from_length<Input>(value: Input) -> Dimension
where Input: Into<f32> + Copy,

Converts into an Into<f32> into Self
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impl FromPercent for Dimension

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fn from_percent<Input>(value: Input) -> Dimension
where Input: Into<f32> + Copy,

Converts into an Into<f32> into Self
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impl MaybeResolve<Option<f32>, Option<f32>> for Dimension

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fn maybe_resolve( self, context: Option<f32>, calc: impl Fn(*const (), f32) -> f32, ) -> Option<f32>

Converts the given Dimension into an absolute length

Can return None

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impl PartialEq for Dimension

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

Tests for self and other values to be equal, and is used by ==.
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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 ResolveOrZero<Option<f32>, f32> for Dimension

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fn resolve_or_zero( self, context: Option<f32>, calc: impl Fn(*const (), f32) -> f32, ) -> f32

Will return a default value of result is evaluated to None

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impl TaffyAuto for Dimension

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const AUTO: Dimension

The auto value for type implementing TaffyAuto
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impl TaffyZero for Dimension

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const ZERO: Dimension

The zero value for type implementing TaffyZero
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impl Copy for Dimension

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impl StructuralPartialEq for Dimension

Auto Trait 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> AnyEq for T
where T: Any + PartialEq,

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fn equals(&self, other: &(dyn Any + 'static)) -> bool

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

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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> 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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fn into_any(self: Box<T>) -> Box<dyn Any>

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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fn into_any_rc(self: Rc<T>) -> Rc<dyn Any>

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

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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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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Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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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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fn into_either(self, into_left: bool) -> Either<Self, Self>

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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impl<T> MaybeResolve<f32, Option<f32>> for T
where T: MaybeResolve<Option<f32>, Option<f32>>,

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fn maybe_resolve( self, context: f32, calc: impl Fn(*const (), f32) -> f32, ) -> Option<f32>

Converts the given MaybeResolve value into an absolute length Can return None

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impl<T> Pointable for T

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const ALIGN: usize

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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type Output = T

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The resulting type after obtaining ownership.
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impl<T, U> TryFrom<U> for 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
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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.
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fn upcast(&self) -> Option<&T>

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

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