Enum Unit

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pub enum Unit {
Show 21 variants Auto, Ch(f64), Cm(f64), Dpi(f64), Dpcm(f64), Dppx(f64), Em(f64), Fr(f64), In(f64), Mm(f64), Pc(f64), Pt(f64), Px(f64), Q(f64), Rem(f64), Vh(f64), Vmax(f64), Vmin(f64), Vw(f64), Percent(f64), None(f64),
}
Expand description

Follows CSS Values 3 drafted in csswg.org.

§Absolute Lengths

unitnameequivalence
cmcentermeters1cm = 96px/2.54
mmmillimeters1mm == 1/10th of 1cm
Qquarter-millimeters1Q = 1/40th of 1cm
ininches1in = 2.54cm = 96px
pcpicas1pc = 1/6th of 1in
ptpoints1pt = 1/72th of 1in
pxpixels1px = 1/96th of 1in

§Relative Lengths

unitrelative to
emfont size of element
exx-height of element’s font
chwidth of the “0” (ZERO, U+0030) glyph in the element’s font
remfont size of the root element
vw1% of viewport’s width
vh1% of viewport’s height
vmin1% of viewport’s smaller dimension
vmax1% of viewport’s larger dimension

§Others

unitrepresents
dpiDots per inch
dpcmDots per centmeter
dppxDots per px unit
frThis unit represents one fraction of the available space in the grid container.

Variants§

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Auto

auto size

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Ch(f64)

ch

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Cm(f64)

cm

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Dpi(f64)

dpi

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Dpcm(f64)

dpcm

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Dppx(f64)

dppx

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Em(f64)

em

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Fr(f64)

fr

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In(f64)

in

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Mm(f64)

mm

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Pc(f64)

pc

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Pt(f64)

pt

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Px(f64)

px

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Q(f64)

q

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Rem(f64)

rem

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Vh(f64)

vh

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Vmax(f64)

vmax

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Vmin(f64)

vmin

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Vw(f64)

vw

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Percent(f64)

v%

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None(f64)

no unit

Trait Implementations§

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impl Clone for Unit

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fn clone(&self) -> Unit

Returns a copy 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 Unit

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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 Default for Unit

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fn default() -> Unit

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

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type Err = Error

The associated error which can be returned from parsing.
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fn from_str(s: &str) -> Result<Unit, Self::Err>

Parses a string s to return a value of this type. Read more
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impl Ord for Unit

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fn cmp(&self, _: &Self) -> Ordering

This method returns an Ordering between self and other. Read more
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fn max(self, other: Self) -> Self
where Self: Sized,

Compares and returns the maximum of two values. Read more
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fn min(self, other: Self) -> Self
where Self: Sized,

Compares and returns the minimum of two values. Read more
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fn clamp(self, min: Self, max: Self) -> Self
where Self: Sized,

Restrict a value to a certain interval. Read more
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impl PartialEq for Unit

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fn eq(&self, o: &Self) -> 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 PartialOrd for Unit

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fn partial_cmp(&self, _: &Self) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more
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fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator. Read more
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fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator. Read more
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fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator. Read more
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fn ge(&self, other: &Rhs) -> bool

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

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fn to_string(&self) -> String

Converts the given value to a String. Read more
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impl Copy for Unit

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impl Eq for Unit

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impl Freeze for Unit

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impl RefUnwindSafe for Unit

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impl Send for Unit

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impl Sync for Unit

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impl Unpin for Unit

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impl UnwindSafe for Unit

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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.