Adds the ability to load some composite glyphs and prevents an error when a composite glyph is used.
Implementation based on ttf glyf table documentation: https://learn.microsoft.com/en-us/typography/opentype/spec/glyf
There are still some missing features like scaling, parent glyph point based positioning etc. I think this is a topic for future work. Howerever, it looks like implemented features are enough for utf-8 latin subset in major fonts.
issue: #2599
Enhances the portability of the TTF loader on UWP platforms
by implementing an alternative file loading mechanism.
This is designed to support environments where the file mapping
feature is not available, ensuring wider compatibility and reliability
in file handling.
Issue: https://github.com/thorvg/thorvg/issues/1912
ttf is an industry standard format that is the most widely used
in the products. Now thorvg supports the basic features of
the font to supplement the text drawing.
The implementation is followed the ttf spec,
the covered features are:
- horizontal layouting with kerning.
- utf8 -> utf32 converted glyph drawing.
To use the feature, please enable ttf loader:
$meson -Dloaders="ttf_beta, ..."
@Issue: https://github.com/thorvg/thorvg/issues/969
