Automattic/node-canvas

Allow registering custom fonts from a buffer

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#386 创建于 2014年2月13日

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 (4 评论) (0 反应) (0 负责人)JavaScript (9,524 star) (1,140 fork)batch import
FeatureHelp wantedText & Fonts

描述

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.

贡献者指南

技术栈
javascriptnodejsc
领域
backend
议题类型
feature
难度面向新贡献者的预计实现难度，1 表示很小改动，5 表示专家级工作。
4
预计时间有经验贡献者完成调查、实现、测试并准备 pull request 的粗略时间范围。
1-3 hours
活动状态议题当前的可参与程度：新鲜、活跃、陈旧、阻塞或等待维护者输入。
stale
清晰度议题是否清楚说明期望改动、验收标准和下一步。
clear
前置要求
Node.js basicsBuffer API understandingFamiliarity with node canvas
新手友好度1-100 的估计分数，表示该议题对首次贡献者的友好程度。
30
研究方向
This issue requests the ability to register custom fonts from a buffer. Start by examining the existing font registration code in node canvas, likely in `src/Font.cc` or `src/Font.h`. Review how fonts are currently loaded from files and identify the APIs that need modification. The linked jsdom issue (tmpvar/jsdom#744) provides context about the use case. Consider using Cairo's `cairo ft font face create for ft face` or similar functions to load fonts from memory. Look for existing discussions in the issue comments for any proposed approaches.