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All: Resolves #443: Various optimisations to make dealing with large notes easier and make Katex re-rendering faster

This commit is contained in:
Laurent Cozic
2018-05-10 12:02:39 +01:00
parent ef2ffd4e52
commit b9118a90be
5 changed files with 114 additions and 21 deletions

View File

@@ -5,15 +5,28 @@ const Setting = require('lib/models/Setting');
class MdToHtml_Katex {
constructor() {
this.cache_ = {};
this.assetsLoaded_ = false;
}
name() {
return 'katex';
}
processContent(renderedTokens, content, tagType) {
try {
let renderered = katex.renderToString(content, {
displayMode: tagType === 'block',
});
const cacheKey = tagType + '_' + content;
let renderered = null;
if (this.cache_[cacheKey]) {
renderered = this.cache_[cacheKey];
} else {
renderered = katex.renderToString(content, {
displayMode: tagType === 'block',
});
this.cache_[cacheKey] = renderered;
}
if (tagType === 'block') renderered = '<p>' + renderered + '</p>';
@@ -29,6 +42,8 @@ class MdToHtml_Katex {
}
async loadAssets() {
if (this.assetsLoaded_) return;
// In node, the fonts are simply copied using copycss to where Katex expects to find them, which is under app/gui/note-viewer/fonts
// In React Native, it's more complicated and we need to download and copy them to the right directory. Ideally, we should embed
@@ -43,6 +58,8 @@ class MdToHtml_Katex {
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' });
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' });
}
this.assetsLoaded_ = true;
}
}