Enum style::values::specified::font::FontSize

pub enum FontSize {
    Length(LengthOrPercentage),
    Keyword(KeywordInfo),
    Smaller,
    Larger,
    System(SystemFont),
}

A specified font-size value

Variants

Length(LengthOrPercentage)

A length; e.g. 10px.

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.

Smaller

font-size: smaller

Larger

font-size: larger

System(SystemFont)

Derived from a specified system font.

Methods

impl FontSize

pub fn from_html_size(size: u8) -> Self

https://html.spec.whatwg.org/multipage/#rules-for-parsing-a-legacy-font-size

pub fn to_computed_value_against(
    &self,
    context: &Context,
    base_size: FontBaseSize
) -> FontSize

Compute it against a given base font size

impl FontSize

pub fn system_font(f: SystemFont) -> Self

Construct a system font value.

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

Obtain the system font, if any

pub fn medium() -> Self

Get initial value for specified font size.

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.

pub fn cascade_specified_font_size(
    context: &mut Context,
    specified_value: &FontSize,
    computed: FontSize
)

Cascade font-size with specified value

Trait Implementations

impl Clone for FontSize

fn clone(&self) -> FontSize

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for FontSize

fn fmt(&self, __arg_0: &mut Formatter) -> Result

Formats the value using the given formatter.

impl MallocSizeOf for FontSize

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.

impl PartialEq for FontSize

fn eq(&self, __arg_0: &FontSize) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, __arg_0: &FontSize) -> bool

This method tests for !=.

impl ToCss for FontSize

fn to_css<W>(&self, dest: &mut W) -> Result where
    W: Write, 

Serialize self in CSS syntax, writing to dest.

fn to_css_string(&self) -> String

Serialize self in CSS syntax and return a string.

impl From<LengthOrPercentage> for FontSize

fn from(other: LengthOrPercentage) -> Self

Performs the conversion.

impl ToComputedValue for FontSize

type ComputedValue = FontSize

The computed value type we're going to be converted to.

fn to_computed_value(&self, context: &Context) -> FontSize

Convert a specified value to a computed value, using itself and the data inside the Context.

fn from_computed_value(computed: &FontSize) -> Self

Convert a computed value to specified value form.

impl Parse for FontSize

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

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