Struct GlyphPosition 

pub struct GlyphPosition {
    pub id: u32,
    pub x: f32,
    pub y: f32,
    pub advance: f32,
    pub byte_start: u32,
    pub byte_end: u32,
}

One positioned glyph within a shaped run.

Fields

id: u32

Glyph index into the resolved font.

x: f32

X position of the glyph’s leading edge, from the run origin, in logical pixels. cosmic-text emits glyphs in visual order, so in a mixed-script paragraph glyphs[i].x can be smaller than glyphs[i-1].x when the run crosses a BiDi boundary.

y: f32

Y offset from the run’s baseline, in logical pixels.

advance: f32

X advance (the leading edge of the next glyph would land at x + advance). Critical for caret placement: kerning makes next.x - this.x slightly different from this.advance, and trailing whitespace produces no glyph at all unless we record the advance separately.

byte_start: u32

Byte range in the source string that produced this glyph cluster (start..end). Empty range = synthesised (e.g. ellipsis). Stored so the renderer can map logical byte ranges to visual glyph clusters for caret + selection in mixed-script text.

byte_end: u32

Byte range end (exclusive). See Self::byte_start.

Trait Implementations

impl Clone for GlyphPosition

fn clone(&self) -> GlyphPosition

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for GlyphPosition

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

Formats the value using the given formatter.

impl Copy for GlyphPosition