pub enum FontSize {
    Length(LengthPercentage),
    Keyword(KeywordInfo),
    Smaller,
    Larger,
    System(SystemFont),
}
Expand description

A specified font-size value

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Length(LengthPercentage)

A length; e.g. 10px.

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Keyword(KeywordInfo)

A keyword value, along with a ratio and absolute offset. The ratio in any specified keyword value will be 1 (with offset 0), but we cascade keywordness even after font-relative (percent and em) values have been applied, which is where the ratio comes in. The offset comes in if we cascaded a calc value, where the font-relative portion (em and percentage) will go into the ratio, and the remaining units all computed together will go into the offset. See bug 1355707.

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Smaller

font-size: smaller

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Larger

font-size: larger

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System(SystemFont)

Derived from a specified system font.

Implementations§

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impl FontSize

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pub fn from_html_size(size: u8) -> Self

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pub fn to_computed_value_against( &self, context: &Context<'_>, base_size: FontBaseSize, line_height_base: LineHeightBase ) -> FontSize

Compute it against a given base font size

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impl FontSize

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pub fn system_font(f: SystemFont) -> Self

Get a specified value that represents a system font.

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pub fn get_system(&self) -> Option<SystemFont>

Retreive a SystemFont from the specified value.

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pub fn medium() -> Self

Get initial value for specified font size.

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pub fn parse_quirky<'i, 't>( context: &ParserContext<'_>, input: &mut Parser<'i, 't>, allow_quirks: AllowQuirks ) -> Result<FontSize, ParseError<'i>>

Parses a font-size, with quirks.

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impl Clone for FontSize

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fn clone(&self) -> FontSize

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 FontSize

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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 MallocSizeOf for FontSize

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fn size_of(&self, ops: &mut MallocSizeOfOps) -> usize

Measure the heap usage of all descendant heap-allocated structures, but not the space taken up by the value itself.
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impl Parse for FontSize

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fn parse<'i, 't>( context: &ParserContext<'_>, input: &mut Parser<'i, 't> ) -> Result<FontSize, ParseError<'i>>

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impl PartialEq<FontSize> for FontSize

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

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl SpecifiedValueInfo for FontSize

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const SUPPORTED_TYPES: u8 = 0u8

Supported CssTypes by the given value type. Read more
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fn collect_completion_keywords(_f: &mut dyn FnMut(&[&'static str]))

Collect value starting words for the given specified value type. This includes keyword and function names which can appear at the beginning of a value of this type. Read more
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impl ToComputedValue for FontSize

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type ComputedValue = FontSize

The computed value type we’re going to be converted to.
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fn to_computed_value(&self, context: &Context<'_>) -> FontSize

Convert a specified value to a computed value, using itself and the data inside the Context.
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fn from_computed_value(computed: &FontSize) -> Self

Convert a computed value to specified value form. Read more
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impl ToCss for FontSize

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fn to_css<W>(&self, dest: &mut CssWriter<'_, W>) -> Resultwhere W: Write,

Serialize self in CSS syntax, writing to dest.
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fn to_css_string(&self) -> String

Serialize self in CSS syntax and return a string. Read more
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impl ToShmem for FontSize

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fn to_shmem(&self, builder: &mut SharedMemoryBuilder) -> Result<Self>

Clones this value into a form suitable for writing into a SharedMemoryBuilder. Read more
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impl StructuralPartialEq for FontSize

Auto Trait Implementations§

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impl<T> Any for Twhere 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 Twhere 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 Twhere 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> 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 Twhere 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> MaybeBoxed<Box<T, Global>> for T

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fn maybe_boxed(self) -> Box<T, Global>

Convert
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impl<T> MaybeBoxed<T> for T

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fn maybe_boxed(self) -> T

Convert
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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

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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impl<T> Same<T> for T

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type Output = T

Should always be Self
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impl<T> ToOwned for Twhere 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 Twhere 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 Twhere 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.
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impl<T> Erased for T