mirror of
https://github.com/laurent22/joplin.git
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47 lines
1.8 KiB
JavaScript
47 lines
1.8 KiB
JavaScript
const { shim } = require("lib/shim");
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const katex = require("katex");
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const katexCss = require("lib/csstojs/katex.css.js");
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const Setting = require("lib/models/Setting");
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class MdToHtml_Katex {
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name() {
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return "katex";
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}
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processContent(renderedTokens, content, tagType) {
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try {
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let renderered = katex.renderToString(content);
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if (tagType === "block") renderered = "<p>" + renderered + "</p>";
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renderedTokens.push(renderered);
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} catch (error) {
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renderedTokens.push("Cannot render Katex content: " + error.message);
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}
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return renderedTokens;
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}
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extraCss() {
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return katexCss;
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}
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async loadAssets() {
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// In node, the fonts are simply copied using copycss to where Katex expects to find them, which is under app/gui/note-viewer/fonts
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// In React Native, it's more complicated and we need to download and copy them to the right directory. Ideally, we should embed
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// them as an asset and copy them from there (or load them from there by modifying Katex CSS), but for now that will do.
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if (shim.isReactNative()) {
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// Fonts must go under the resourceDir directory because this is the baseUrl of NoteBodyViewer
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const baseDir = Setting.value("resourceDir");
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await shim.fsDriver().mkdir(baseDir + "/fonts");
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await shim.fetchBlob("https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.9.0-beta1/fonts/KaTeX_Main-Regular.woff2", { overwrite: false, path: baseDir + "/fonts/KaTeX_Main-Regular.woff2" });
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await shim.fetchBlob("https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.9.0-beta1/fonts/KaTeX_Math-Italic.woff2", { overwrite: false, path: baseDir + "/fonts/KaTeX_Math-Italic.woff2" });
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await shim.fetchBlob("https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.9.0-beta1/fonts/KaTeX_Size1-Regular.woff2", { overwrite: false, path: baseDir + "/fonts/KaTeX_Size1-Regular.woff2" });
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}
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}
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}
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module.exports = MdToHtml_Katex;
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