下面是 Fontconfig 的字体模型，有许多的属性。
Property Definitions
Property C Preprocessor Symbol Type Description
----------------------------------------------------
family FC_FAMILY String Font family names
familylang FC_FAMILYLANG String Language corresponding to
each family name
style FC_STYLE String Font style. Overrides weight
and slant
stylelang FC_STYLELANG String Language corresponding to
each style name
fullname FC_FULLNAME String Font face full name where
different from family and
family + style
fullnamelang FC_FULLNAMELANG String Language corresponding to
each fullname
slant FC_SLANT Int Italic, oblique or roman
weight FC_WEIGHT Int Light, medium, demibold,
bold or black
width FC_WIDTH Int Condensed, normal or expanded
size FC_SIZE Double Point size
aspect FC_ASPECT Double Stretches glyphs horizontally
before hinting
pixelsize FC_PIXEL_SIZE Double Pixel size
spacing FC_SPACING Int Proportional, dual-width,
monospace or charcell
foundry FC_FOUNDRY String Font foundry name
antialias FC_ANTIALIAS Bool Whether glyphs can be
antialiased
hintstyle FC_HINT_STYLE Int Automatic hinting style
hinting FC_HINTING Bool Whether the rasterizer should
use hinting
verticallayout FC_VERTICAL_LAYOUT Bool Use vertical layout
autohint FC_AUTOHINT Bool Use autohinter instead of
normal hinter
globaladvance FC_GLOBAL_ADVANCE Bool Use font global advance data (deprecated)
file FC_FILE String The filename holding the font
relative to the config's sysroot
index FC_INDEX Int The index of the font within
the file
ftface FC_FT_FACE FT_Face Use the specified FreeType
face object
rasterizer FC_RASTERIZER String Which rasterizer is in use (deprecated)
outline FC_OUTLINE Bool Whether the glyphs are outlines
scalable FC_SCALABLE Bool Whether the glyphs are outlines or have color
dpi FC_DPI Double Target dots per inch
rgba FC_RGBA Int unknown, rgb, bgr, vrgb,
vbgr, none - subpixel geometry
scale FC_SCALE Double Scale factor for point->pixel
conversions (deprecated)
minspace FC_MINSPACE Bool Eliminate leading from line
spacing
matrix FC_MATRIX Matrix Hold an affine transformation
charset FC_CHARSET CharSet Unicode chars encoded by
the font
lang FC_LANG LangSet Set of RFC-3066-style
languages this font supports
fontversion FC_FONTVERSION Int Version number of the font
capability FC_CAPABILITY String List of layout capabilities in
the font
fontformat FC_FONTFORMAT String String name of the font format
embolden FC_EMBOLDEN Bool Rasterizer should
synthetically embolden the font
embeddedbitmap FC_EMBEDDED_BITMAP Bool Use the embedded bitmap instead
of the outline
decorative FC_DECORATIVE Bool Whether the style is a decorative
variant
lcdfilter FC_LCD_FILTER Int Type of LCD filter
namelang FC_NAMELANG String Language name to be used for the
default value of familylang,
stylelang and fullnamelang
fontfeatures FC_FONT_FEATURES String List of extra feature tags in
OpenType to be enabled
prgname FC_PRGNAME String Name of the running program
hash FC_HASH String SHA256 hash value of the font data
with "sha256:" prefix (deprecated)
postscriptname FC_POSTSCRIPT_NAME String Font name in PostScript
color FC_COLOR Bool Whether any glyphs have color
symbol FC_SYMBOL Bool Whether font uses MS symbol-font encoding
fontvariations FC_FONT_VARIATIONS String comma-separated string of axes in variable font
variable FC_VARIABLE Bool Whether font is Variable Font
fonthashint FC_FONT_HAS_HINT Bool Whether font has hinting
order FC_ORDER Int Order number of the font
desktop FC_DESKTOP_NAME String Current desktop name
namedinstance FC_NAMED_INSTANCE Bool Whether font is a named instance
fontwarapper FC_FONT_WRAPPER String The font wrapper format
Linux 字体技术栈
hinting
用数学的方法，让字体在低分辨率情况下也能显示清楚。