Struct TextDocumentLayout 

pub struct TextDocumentLayout {
    pub metrics: TextMetrics,
    /* private fields */
}

Text laid out one hard-broken paragraph at a time.

Each paragraph keeps its own TextLayout, and the document records where each one starts. Laying out an edited version of a document reuses every paragraph before and after the edit: those after it only move, so an edit near the top of a long document costs about as much as one at its end. A TextLayout of the same text instead stores every line in document coordinates, like Flutter’s paragraph, and so rewrites every line after an edit.

Geometry is read through TextGeometry; it matches a TextLayout of the same text laid out with soft wrapping and visible overflow.

Fields

metrics: TextMetrics

Implementations

impl TextDocumentLayout

pub fn paragraph_count(&self) -> usize

Number of hard-broken paragraphs; text without a line break has one.

pub fn glyph_count(&self) -> usize

Trait Implementations

impl Debug for TextDocumentLayout

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

Formats the value using the given formatter.

impl TextGeometry for TextDocumentLayout

fn metrics(&self) -> TextMetrics

fn line_count(&self) -> usize

fn get_line(&self, index: usize) -> Option<TextLineRef<'_>>

fn lines(&self) -> TextLines<'_>

fn lines_between(&self, top: f32, bottom: f32) -> TextLines<'_>

Lines that may meet the vertical span top..bottom, plus one line on each side; pad the span for glyphs that overhang their line.

fn line_for_offset(&self, byte: usize) -> usize

Index of the line whose [start, end) holds byte, or the last line when none does, like Flutter’s Paragraph.getLineBoundary.

fn line_caret_positions(&self, line: usize) -> &[TextCaretPosition]

The visual insertion points of one line in left-to-right screen order.

fn line(&self, index: usize) -> TextLineRef<'_>

The line at index.