Module font

Structs§

CachedShapeData 🔒
Font
FontBaseline
FontFamilyDescriptor: The font family parameters for font selection.
FontGroup: A FontGroup is a prioritised list of fonts for a given set of font styles. It is used by TextRun to decide which font to render a character with. If none of the fonts listed in the styles are suitable, a fallback font may be used.
FontGroupFamily 🔒: A FontGroupFamily is a single font family in a FontGroup. It corresponds to one of the families listed in the font-family CSS property. The corresponding font data is lazy-loaded, only if actually needed. A single FontGroupFamily can have multiple fonts, in the case that individual fonts only cover part of the Unicode range.
FontGroupFamilyMember 🔒: A FontGroupFamily can have multiple members if it is a “composite face”, meaning that it is defined by multiple @font-face declarations which vary only by their unicode-range descriptors. In this case, font selection will select a single member that contains the necessary unicode character. Unicode ranges are specified by the FontGroupFamilyMember::template member.
FontMetrics
FontRef
ShapeCacheEntry 🔒: An entry in the shape cache.
ShapingFlags
ShapingOptions: Various options that control text shaping.

TEXT_SHAPING_PERFORMANCE_COUNTER 🔒: Nanoseconds spent shaping text across all layout threads.

advance_for_shaped_glyph 🔒: Computes the total advance for a glyph, taking letter-spacing and word-spacing into account.
map_platform_values_to_style_values 🔒: Given a mapping array mapping and a value, map that value onto the value specified by the array. For instance, for FontConfig values of weights, we would map these onto the CSS [0..1000] range by creating an array as below. Values that fall between two mapped values, will be adjusted by the weighted mean.