tainted-bit a6afa86d85 font/opentype: support using Collection as a Face ...

This change allows font collection files (extensions .ttc or .otc)
to be used as a text.Face. These files contain an ordered list of
SFNT fonts, each supporting a maximum of 2^16 glyphs. When used as
a text.Face, each rune in the string to layout or render will be
assigned to the first font with a glyph for that rune, or to the
replacement character from the first font in the file otherwise.

With this change, it is possible to support multiple unicode planes
in a single text.Face by using a Collection with more than one
internal SFNT file. For example, it is now possible to display
characters from the basic multilingual plane and emoji in a single
widget.Label by loading an appropriate OTC file.

Fixes gio#104

Signed-off-by: tainted-bit <sourcehut@taintedbit.com>

2020-07-08 16:11:50 +02:00

..

opentype.go

font/opentype: support using Collection as a Face

2020-07-08 16:11:50 +02:00