package fonts

Get desktop application:
View/edit binary Protocol Buffers messages

A set of potentially available families.

• repeated FontFamily family = 1

  sorted by name

• repeated int32 name_lookup = 2

  sorted name lookup info for binary search see go/fonts-gmscore-namelookup for bit packing scheme

• repeated string strings = 3

  strings for full and postscript names, broken up. see go/fonts-gmscore-namelookup.

• repeated int32 prefetch = 4

  Name-lookup style family + font indices to prefetch, highest priority first.

• optional int32 version = 5

• optional string description = 6

  Description of current directory version.

Details required for a checked download A Downloadable Font will typically have a hash but no filename. A System Font will typically have only a filename. Hash is 20 bytes sha1 up to v12, 32 byte sha256 for v13+,

Used in: Font

• optional string filename = 1

• optional int64 file_size = 2

• optional bytes hash = 3

To allow expression of variation font capability, e.g. weight 300-700 If end is <= start it's a point (e.g. for a non-variational font). Where possible prefer end = 0 for point to save the field in binary proto.

Used in: Font

• optional float start = 1

• optional float end = 2

Describes a single optentype font file, which may be a variation font or a single font from a TTC.

Used in: FontFamily

• optional FileSpec file = 1

• optional IntRange weight = 2

  numeric weight per https://drafts.csswg.org/css-fonts/#propdef-font-weight if varfont, range of 'wght' per https://www.microsoft.com/typography/otspec/fvar.htm#VAT

• optional FloatRange width = 3

  names converted to values per https://www.microsoft.com/typography/otspec/os2.htm#wdc if varfont, range of 'wdth' per https://www.microsoft.com/typography/otspec/fvar.htm#VAT

• optional FloatRange italic = 4

  0.0 or 1.0 per https://www.microsoft.com/typography/otspec/os2.htm#fss bit 0. if varfont, range of 'ital' per https://www.microsoft.com/typography/otspec/fvar.htm#VAT

• optional int32 ttc_index = 7

  Google Fonts doesn't have any [yet?] but Android does

Used in: Directory

• optional string name = 1

• optional int32 version = 2

• repeated Font fonts = 4

  Even for a variation font we may have several entries, for example Roboto as a varfont may span two files, one for regular and one for italic

To allow expression of variation font capability, e.g. weight 300-700

Used in: Font

• optional int32 start = 1

• optional int32 end = 2