Enum LengthValue

pub enum LengthValue {
Show 15 variants
    Px(f32),
    In(f32),
    Cm(f32),
    Mm(f32),
    Q(f32),
    Pt(f32),
    Pc(f32),
    Em(f32),
    Ex(f32),
    Ch(f32),
    Rem(f32),
    Vw(f32),
    Vh(f32),
    Vmin(f32),
    Vmax(f32),
}

Expand description

A length value.

Variants§

Px(f32)

Pixels.

A pixel is the smallest viewable unit. The length of a pixel depends on the used device.

In(f32)

Inches.

An inch is roughly 96 pixels or about 2.54cm.

Cm(f32)

Centimeters.

A centimeter is roughly 37.8 pixels.

Mm(f32)

Millimeters.

A millimeter is roughly 3.78 pixels or 1/10th of a centimeter.

Q(f32)

Quarter.

A quarter of a millimeter is roughly 1/40th of 1cm.

Pt(f32)

Points.

A point is roughly 1.3333 pixels or 1/72th of an inch.

Pc(f32)

Picas.

A pica is roughly 16 pixels or 1/6th of an inch.

Em(f32)

em.

An em is equal to the computed font-size property of the element on which it is used.

Ex(f32)

ex.

An ex is the height of the letter x of the font, or 0.5em.

Ch(f32)

Character unit.

A character unit is defined as the width of the character 0 of the font.

Rem(f32)

Root em.

An rem is equal to the computed font-size property of the root of the document. For websites the root of the document is the <html> element.

Vw(f32)

View width.

A length equal to 1% of the width of the viewport.

Vh(f32)

View height.

A length equal to 1% of the height of the viewport.

Vmin(f32)

Viewport minimum.

A viewport minimum is equal to 1% of the viewport’s smallest dimension. For example 1vmin is equal to 6px on a browser window that is 1200px wide and 600px high.

Vmax(f32)

Viewport maximum.

A viewport maximum is equal to 1% of the viewport’s largest dimension. For example 1vmax is equal to 12px on a browser window that is 1200px wide and 600px high.

Implementations§

impl LengthValue

pub const PX_PER_IN: f32 = 96f32

The amount of pixels per inch.

pub const PX_PER_CM: f32 = 37.7952766f32

The amount of pixels per centimeter.

pub const PX_PER_MM: f32 = 3.77952766f32

The amount of pixels per millimeter.

pub const PX_PER_Q: f32 = 0.944881916f32

The amount of pixels per quarter-millimeter.

pub const PX_PER_PT: f32 = 1.33333337f32

The amount of pixels per point.

pub const PX_PER_PC: f32 = 16f32

The amount of pixels per pica.

pub fn to_px(&self) -> Option<f32>

Returns the amount of pixels of the length if calculateable.

pub fn to_unit_value(&self) -> (f32, &str)

Trait Implementations§

impl Clone for LengthValue

fn clone(&self) -> LengthValue

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

impl Debug for LengthValue

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

Formats the value using the given formatter. Read more

impl Default for LengthValue

fn default() -> LengthValue

Returns the “default value” for a type. Read more

impl From<LengthValue> for LengthOrPercentage

fn from(value: LengthValue) -> LengthOrPercentage

Converts to this type from the input type.

impl Mul<f32> for LengthValue

type Output = LengthValue

The resulting type after applying the * operator.

fn mul(self, other: f32) -> LengthValue

Performs the * operation. Read more

impl<'i> Parse<'i> for LengthValue

fn parse<'t>( input: &mut Parser<'i, 't>, ) -> Result<LengthValue, ParseError<'i, CustomParseError<'i>>>

impl PartialEq<f32> for LengthValue

fn eq(&self, other: &f32) -> bool

Tests for self and other values to be equal, and is used by ==.

1.0.0 · 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.

impl PartialEq for LengthValue

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

Tests for self and other values to be equal, and is used by ==.

1.0.0 · 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.

impl PartialOrd<f32> for LengthValue

fn partial_cmp(&self, other: &f32) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more

1.0.0 · source§

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

Tests less than (for self and other) and is used by the < operator. Read more

1.0.0 · source§

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

Tests less than or equal to (for self and other) and is used by the <= operator. Read more

1.0.0 · source§

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

Tests greater than (for self and other) and is used by the > operator. Read more

1.0.0 · source§

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

Tests greater than or equal to (for self and other) and is used by the >= operator. Read more

impl PartialOrd for LengthValue

fn partial_cmp(&self, other: &LengthValue) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more

1.0.0 · source§

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

Tests less than (for self and other) and is used by the < operator. Read more

1.0.0 · source§

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

Tests less than or equal to (for self and other) and is used by the <= operator. Read more

1.0.0 · source§

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

Tests greater than (for self and other) and is used by the > operator. Read more

1.0.0 · source§

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

Tests greater than or equal to (for self and other) and is used by the >= operator. Read more

impl Res<LengthValue> for LengthValue

fn set_or_bind<F>(self, cx: &mut Context, entity: Entity, closure: F)
where Self: Sized, F: 'static + Clone + Fn(&mut Context, Self),

impl ResGet<LengthValue> for LengthValue

fn get_ref<'a>( &self, _: &impl DataContext, ) -> Option<LensValue<'_, LengthValue>>

fn get(&self, _: &impl DataContext) -> LengthValue

impl TryAdd<LengthValue> for LengthValue

fn try_add(&self, other: &LengthValue) -> Option<LengthValue>

impl Copy for LengthValue

impl StructuralPartialEq for LengthValue

Auto Trait Implementations§

impl Freeze for LengthValue

impl RefUnwindSafe for LengthValue

impl Send for LengthValue

impl Sync for LengthValue

impl Unpin for LengthValue

impl UnwindSafe for LengthValue

Blanket Implementations§

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

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

impl<T> AnyEq for T
where T: Any + PartialEq,

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

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

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

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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

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

Mutably borrows from an owned value. Read more

impl<T> CloneToUninit for T
where T: Clone,

unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)

Performs copy-assignment from self to dst. Read more

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

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.

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.

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.

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.

impl<T> DowncastSync for T
where T: Any + Send + Sync,

fn into_any_arc(self: Arc<T>) -> Arc<dyn Any + Sync + Send>

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

impl<T> From<T> for T

fn from(t: T) -> T

Returns the argument unchanged.

impl<T> Instrument for T

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

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

fn in_current_span(self) -> Instrumented<Self>

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

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

fn into(self) -> U

Calls U::from(self).

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

impl<T> Same for T

type Output = T

Should always be Self

impl<T> ToOwned for T
where T: Clone,

type Owned = T

The resulting type after obtaining ownership.

fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more

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

Uses borrowed data to replace owned data, usually by cloning. Read more

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

type Error = Infallible

The type returned in the event of a conversion error.

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

Performs the conversion.

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

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

The type returned in the event of a conversion error.

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

Performs the conversion.

impl<T> WithSubscriber for T

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

fn with_current_subscriber(self) -> WithDispatch<Self>

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