Enum TextRole 

pub enum TextRole {
    Display,
    LargeTitle,
    Title,
    Heading,
    Subheading,
    Body,
    Label,
    Caption,
    Reading,
    Code,
}

What a piece of text is. Pick the role; never a pixel size.

Role	Size / weight / leading at 1×	Use
Display	34 / 600 / 1.15	One hero number or name per screen at most
LargeTitle	26 / 600 / 1.2	Top of a content page
Title	20 / 600 / 1.25	Detail title (a message subject, a contact name)
Heading	16 / 600 / 1.3	Section heading
Subheading	14 / 600 / 1.35	Group label inside a section, list section header
Body	14 / 400 / 1.45	Default text
Label	13 / 500 / 1.3	Control labels, row titles in dense lists
Caption	12 / 400 / 1.35	Secondary line, timestamps, metadata
Reading	16 / 400 / 1.6, serif	Long-form documents and books
Code	13 / 400 / 1.5, mono	Code and terminal

Hierarchy comes from size and weight plus ink tier. There is no all-caps or letter-spaced role: a section header is sentence case in TextRole::Subheading or TextRole::Heading.

Variants

Display

LargeTitle

Title

Heading

Subheading

Body

Label

Caption

Reading

Code

Implementations

impl TextRole

pub const ALL: [TextRole; 10]

Every role, largest first.

pub const fn weight(self) -> TextWeight

The role’s own weight, before any .strong() or override.

pub const fn heading_level(self) -> Option<u8>

The screen-reader heading level a role implies: LargeTitle and Title are level 1, Heading level 2 and Subheading level 3. Display is a hero value, not a heading.

Trait Implementations

impl Clone for TextRole

fn clone(&self) -> TextRole

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TextRole

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

Formats the value using the given formatter.

impl Default for TextRole

fn default() -> TextRole

Returns the “default value” for a type.

impl From<UiTextRole> for TextRole

fn from(value: UiTextRole) -> TextRole

Converts to this type from the input type.

impl Hash for TextRole

fn hash<__H>(&self, state: &mut __H)

where __H: Hasher,

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for TextRole

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

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

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 Copy for TextRole

impl Eq for TextRole

impl StructuralPartialEq for TextRole