Automattic/node-canvas

Allow registering custom fonts from a buffer

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#386 opened on Feb 13, 2014

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FeatureHelp wantedText & Fonts

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Description

For use with jsdom package which simulates browser DOM in node.js and use node-canvas for canvas implementation a support to load fonts (truetype and openfont) from a buffer/content is needed. Because in HTML a custom font face can be specified as an URL, jsdom resolves this URL to a buffer/content by itself. So registration with buffer/content should be possible.

See https://github.com/tmpvar/jsdom/issues/744 for more details.

Contributor guide

Research direction
Examine the existing font registration API in node canvas, then implement a new method that accepts a buffer or content string, likely using the FreeType library via Cairo. Look at how the library currently handles font face loading from files and extend it.
Tech stack
javascript
Domain
backend
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
Half day
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
Node.jsCanvas API basics
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
60