Adding experimental async LaTeX renderer (speeds up rendering ridiculously, but causes instability)

common/src/module/interface.mjs

@@ -84,13 +84,21 @@ export class DialogInterface extends Interface {
 }
 
 export class LatexInterface extends Interface {
+    supportsAsyncRender = BOOLEAN
     /**
      * @param {string} markup - LaTeX markup to render
      * @param {number} fontSize - Font size (in pt) to render
      * @param {string} color - Color of the text to render
      * @returns {string} - Comma separated data of the image (source, width, height)
      */
-    render = FUNCTION
+    renderSync = FUNCTION
+    /**
+     * @param {string} markup - LaTeX markup to render
+     * @param {number} fontSize - Font size (in pt) to render
+     * @param {string} color - Color of the text to render
+     * @returns {Promise<string>} - Comma separated data of the image (source, width, height)
+     */
+    renderAsync = FUNCTION
     /**
      * @param {string} markup - LaTeX markup to render
      * @param {number} fontSize - Font size (in pt) to render

common/src/module/latex.mjs

@@ -112,7 +112,12 @@ class LatexAPI extends Module {
      */
     async requestAsyncRender(markup, fontSize, color) {
         if(!this.initialized) throw new Error("Attempting requestAsyncRender before initialize!")
-        let args = this.#latex.render(markup, fontSize, color).split(",")
+        let render
+        if(this.#latex.supportsAsyncRender)
+            render = await this.#latex.renderAsync(markup, fontSize, color)
+        else
+            render = this.#latex.renderSync(markup, fontSize, color)
+        const args = render.split(",")
         return new LatexRenderResult(...args)
     }
 

common/src/preferences/general.mjs

@@ -46,8 +46,15 @@ class EnableLatex extends BoolSetting {
     }
 }
 
+const ENABLE_LATEX_ASYNC = new BoolSetting(
+    qsTranslate("general", "Enable asynchronous LaTeX renderer (experimental)"),
+    "enable_latex_async",
+    "new"
+)
+
 export default [
     CHECK_FOR_UPDATES,
     RESET_REDO_STACK,
-    new EnableLatex()
+    new EnableLatex(),
+    ENABLE_LATEX_ASYNC
 ]