Struct TextLayout 

pub struct TextLayout;

Implementations

impl TextLayout

pub fn new() -> Self

pub fn break_into_lines( &self, font_context: &FontContext, text: &str, max_width: f64, font_size: f64, font_family: &str, font_weight: u32, font_style: FontStyle, letter_spacing: f64, hyphens: Hyphens, lang: Option<&str>, ) -> Vec<BrokenLine>

Break a string into lines that fit within max_width.

Uses a greedy line-breaking algorithm with optional hyphenation. When hyphens is Auto, long words that don’t fit are split at syllable boundaries using the Knuth-Liang algorithm. When Manual, only soft hyphens (U+00AD) in the text are used as break points.

pub fn shape_text( &self, font_context: &FontContext, text: &str, font_family: &str, font_weight: u32, font_style: FontStyle, ) -> Option<Vec<ShapedGlyph>>

Shape text and return shaped glyphs for a custom font. Returns None for standard fonts or if shaping fails.

pub fn break_runs_into_lines( &self, font_context: &FontContext, chars: &[StyledChar], max_width: f64, hyphens: Hyphens, lang: Option<&str>, ) -> Vec<RunBrokenLine>

Break multi-style text (runs) into lines that fit within max_width.

pub fn measure_widest_word( &self, font_context: &FontContext, text: &str, font_size: f64, font_family: &str, font_weight: u32, font_style: FontStyle, letter_spacing: f64, hyphens: Hyphens, lang: Option<&str>, ) -> f64

Measure the widest single word in a string (min-content width).

When hyphens is Auto, returns the widest syllable width instead of the widest word, since hyphenation allows breaking within words.

pub fn measure_width( &self, font_context: &FontContext, text: &str, font_size: f64, font_family: &str, font_weight: u32, font_style: FontStyle, letter_spacing: f64, ) -> f64

Measure the width of a string on a single line.

pub fn break_into_lines_optimal( &self, font_context: &FontContext, text: &str, max_width: f64, font_size: f64, font_family: &str, font_weight: u32, font_style: FontStyle, letter_spacing: f64, hyphens: Hyphens, lang: Option<&str>, justify: bool, ) -> Vec<BrokenLine>

Break text into lines using the Knuth-Plass optimal algorithm.

Falls back to greedy breaking if KP finds no feasible solution.

pub fn break_runs_into_lines_optimal( &self, font_context: &FontContext, chars: &[StyledChar], max_width: f64, hyphens: Hyphens, lang: Option<&str>, justify: bool, ) -> Vec<RunBrokenLine>

Break multi-style text into lines using the Knuth-Plass optimal algorithm.

Falls back to greedy breaking if KP finds no feasible solution.

pub fn truncate_with_ellipsis( &self, font_context: &FontContext, lines: Vec<BrokenLine>, max_width: f64, font_size: f64, font_family: &str, font_weight: u32, font_style: FontStyle, letter_spacing: f64, ) -> Vec<BrokenLine>

Truncate lines to a single line with ellipsis appended if it exceeds max_width.

pub fn truncate_clip( &self, font_context: &FontContext, lines: Vec<BrokenLine>, max_width: f64, font_size: f64, font_family: &str, font_weight: u32, font_style: FontStyle, letter_spacing: f64, ) -> Vec<BrokenLine>

Truncate lines to a single line by clipping (no indicator appended).

pub fn truncate_runs_with_ellipsis( &self, font_context: &FontContext, lines: Vec<RunBrokenLine>, max_width: f64, ) -> Vec<RunBrokenLine>

Truncate multi-style run lines to a single line with ellipsis.

pub fn truncate_runs_clip( &self, font_context: &FontContext, lines: Vec<RunBrokenLine>, max_width: f64, ) -> Vec<RunBrokenLine>

Truncate multi-style run lines to a single line by clipping.

Trait Implementations

impl Default for TextLayout

fn default() -> Self

Returns the “default value” for a type.