mapbox / glyph-pbf-composite

Composite glyph PBFs on the fly.

glyph-pbf-composite

Combine glyph (SDF) PBFs on the fly.

combine(buffers)

Combine any number of glyph (SDF) PBFs. Returns a re-encoded PBF with the combined font faces, composited using array order to determine glyph priority.

Parameters

parameter	type	description
buffers	array	An array of SDF PBFs.

Installation

Requires nodejs.

$ npm install @mapbox/glyph-pbf-composite

Tests

$ npm test

glyph-pbf-composite's Issues

License Missing

One of our developers at Amazon would like to use this package, but we were unable to find license information. Can you please add a license to the package?

Remove fontstack option

Refs d9c3ee4#commitcomment-22022905

Handle fontstack ascender/descender metadata

Related to mapbox/node-fontnik#160

When/if mapbox/node-fontnik#160 is shipped, the new ascender and descender metadata fields will need to be handled here as well (unless the functionality of this repo is moved into node-fontnik -- mapbox/node-fontnik#163).

We'll also need to figure out the desired behavior of combining ascender/descender metadata from the multiple fonts being composited. In discussing with @tristen, we think the compositing of that metadata should be: if all fonts in the composite have the same ascender/descender values, then use those, but if any are different, then use 0 (falling back to the current fixed value)

In summary:

• Add ascender and descender to fontstack in glyphs.proto, as in https://github.com/mapbox/node-fontnik/pull/160/files#diff-f5607f797a3301f210b1a4e9f7db4ffdR30-R31
• Implement ascender/descender compositing in .composite()

Ref:

• mapbox/mapbox-gl-native#15676
• mapbox/mapbox-gl-js#8781

Coverage information does not write back to fontstack

https://github.com/mapbox/glyph-pbf-composite/blob/master/index.js#L26

What the coverage is used for?