Struct TextTheme 

pub struct TextTheme {

    pub display_large: TextStyle,
    pub display_medium: TextStyle,
    pub display_small: TextStyle,
    pub headline_large: TextStyle,
    pub headline_medium: TextStyle,
    pub headline_small: TextStyle,
    pub title_large: TextStyle,
    pub title_medium: TextStyle,
    pub title_small: TextStyle,
    pub body_large: TextStyle,
    pub body_medium: TextStyle,
    pub body_small: TextStyle,
    pub label_large: TextStyle,
    pub label_medium: TextStyle,
    pub label_small: TextStyle,
}

The named typographic scale (Material 3’s 15 steps). Widgets pick a step (theme.text.title_medium), never a hardcoded size — changing the scale retypesets the whole app. The colors stay inherited (None → resolved against the theme at paint time).

Fields

display_large: TextStyle

The largest step of the display group: short, prominent text such as a hero figure.

display_medium: TextStyle

The middle step of the display group: short, prominent text such as a hero figure.

display_small: TextStyle

The smallest step of the display group: short, prominent text such as a hero figure.

headline_large: TextStyle

The largest step of the headline group: the heading of a screen or of a large section.

headline_medium: TextStyle

The middle step of the headline group: the heading of a screen or of a large section.

headline_small: TextStyle

The smallest step of the headline group: the heading of a screen or of a large section.

title_large: TextStyle

The largest step of the title group: the title of a smaller piece of content: a card, a dialog, a row.

title_medium: TextStyle

The middle step of the title group: the title of a smaller piece of content: a card, a dialog, a row.

title_small: TextStyle

The smallest step of the title group: the title of a smaller piece of content: a card, a dialog, a row.

body_large: TextStyle

The largest step of the body group: running text meant to be read.

body_medium: TextStyle

The middle step of the body group: running text meant to be read.

body_small: TextStyle

The smallest step of the body group: running text meant to be read.

label_large: TextStyle

The largest step of the label group: the text on a control: a button, a tab, a caption.

label_medium: TextStyle

The middle step of the label group: the text on a control: a button, a tab, a caption.

label_small: TextStyle

The smallest step of the label group: the text on a control: a button, a tab, a caption.

Implementations

impl TextTheme

pub const M3: Self

The reference Material 3 scale (sizes in logical pixels; the title and label steps carry a medium weight, as the spec has it).

A const, and that matters: a widget measured with no theme in hand — the un-themed Widget::style path the transparent wrappers take — reads its step from this rather than from a private constant of its own. Twelve widgets used to carry their own number, and one of them had drifted two pixels from the reference without anybody being able to see it.

Trait Implementations

impl Clone for TextTheme

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for TextTheme

impl Debug for TextTheme

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

Formats the value using the given formatter.

impl Default for TextTheme

fn default() -> Self

Returns the “default value” for a type.

impl PartialEq for TextTheme

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for TextTheme