Struct SingleLineResult 

pub struct SingleLineResult {
    pub width: f32,
    pub height: f32,
    pub baseline: f32,
    pub underline_offset: f32,
    pub underline_thickness: f32,
    pub glyphs: Vec<GlyphQuad>,
    pub glyph_keys: Vec<GlyphCacheKey>,
    pub spans: Vec<LaidOutSpan>,
}

Result of [crate::Typesetter::layout_single_line].

Contains the measured dimensions and GPU-ready glyph quads for a single line of text. No flow layout, line breaking, or bidi analysis is performed.

Fields

width: f32

Total advance width of the shaped text, in pixels.

height: f32

Line height (ascent + descent + leading), in pixels.

baseline: f32

Distance from the top of the line to the baseline, in pixels.

underline_offset: f32

Distance from baseline to the top of the underline, in logical pixels. Positive = below the baseline. Sourced from the primary font’s post table.

underline_thickness: f32

Underline line thickness in logical pixels. Sourced from the primary font’s stroke size.

glyphs: Vec<GlyphQuad>

GPU-ready glyph quads, positioned at y=0 (no scroll offset).

glyph_keys: Vec<GlyphCacheKey>

Per-glyph cache keys, parallel to glyphs. Callers that cache glyph output externally should pass these back to [TextFontService::touch_glyphs] each frame to prevent the atlas from evicting still-visible glyphs.

spans: Vec<LaidOutSpan>

Per-span bounding rectangles for markup-aware layout ([crate::Typesetter::layout_single_line_markup]). Empty for the plain-text layout path.