Send disableFontFace and fontExtraProperties as part of the exported font-data

These options are needed in the `FontFaceObject` class, and indirectly in `FontLoader` as well, which means that we currently need to pass them around manually in the API.
Given that the options are (obviously) available on the worker-thread, it's very easy to just provide them when creating `Font`-instances and then send them as part of the exported font-data. This way we're able to simplify the code (primarily on the main-thread), and note that `Font`-instances even had a `disableFontFace`-field already (but it wasn't properly initialized).

src/core/evaluator.js

@@ -1086,8 +1086,7 @@ class PartialEvaluator {
       if (
         isAddToPathSet ||
         state.fillColorSpace.name === "Pattern" ||
-        font.disableFontFace ||
-        this.options.disableFontFace
+        font.disableFontFace
       ) {
         PartialEvaluator.buildFontPaths(
           font,
@@ -4367,7 +4366,7 @@ class PartialEvaluator {
             newProperties
           );
         }
-        return new Font(baseFontName, file, newProperties);
+        return new Font(baseFontName, file, newProperties, this.options);
       }
     }
 
@@ -4559,7 +4558,7 @@ class PartialEvaluator {
     const newProperties = await this.extractDataStructures(dict, properties);
     this.extractWidths(dict, descriptor, newProperties);
 
-    return new Font(fontName.name, fontFile, newProperties);
+    return new Font(fontName.name, fontFile, newProperties, this.options);
   }
 
   static buildFontPaths(font, glyphs, handler, evaluatorOptions) {
@@ -4626,7 +4625,7 @@ class TranslatedFont {
     handler.send("commonobj", [
       this.loadedName,
       "Font",
-      this.font.exportData(this._evaluatorOptions.fontExtraProperties),
+      this.font.exportData(),
     ]);
   }
 

src/core/fonts.js

@@ -88,7 +88,9 @@ const EXPORT_DATA_PROPERTIES = [
   "defaultVMetrics",
   "defaultWidth",
   "descent",
+  "disableFontFace",
   "fallbackName",
+  "fontExtraProperties",
   "fontMatrix",
   "isInvalidPDFjsFont",
   "isType3Font",
@@ -970,11 +972,12 @@ function createNameTable(name, proto) {
  * decoding logics whatever type it is (assuming the font type is supported).
  */
 class Font {
-  constructor(name, file, properties) {
+  constructor(name, file, properties, evaluatorOptions) {
     this.name = name;
     this.psName = null;
     this.mimetype = null;
-    this.disableFontFace = false;
+    this.disableFontFace = evaluatorOptions.disableFontFace;
+    this.fontExtraProperties = evaluatorOptions.fontExtraProperties;
 
     this.loadedName = properties.loadedName;
     this.isType3Font = properties.isType3Font;
@@ -1141,18 +1144,17 @@ class Font {
     return shadow(this, "renderer", renderer);
   }
 
-  exportData(extraProperties = false) {
-    const exportDataProperties = extraProperties
+  exportData() {
+    const exportDataProps = this.fontExtraProperties
       ? [...EXPORT_DATA_PROPERTIES, ...EXPORT_DATA_EXTRA_PROPERTIES]
       : EXPORT_DATA_PROPERTIES;
 
     const data = Object.create(null);
-    let property, value;
-    for (property of exportDataProperties) {
-      value = this[property];
+    for (const prop of exportDataProps) {
+      const value = this[prop];
       // Ignore properties that haven't been explicitly set.
       if (value !== undefined) {
-        data[property] = value;
+        data[prop] = value;
       }
     }
     return data;
@@ -3602,7 +3604,7 @@ class ErrorFont {
     return [chars];
   }
 
-  exportData(extraProperties = false) {
+  exportData() {
     return { error: this.error };
   }
 }

src/display/api.js

@@ -422,8 +422,6 @@ function getDocument(src = {}) {
     },
   };
   const transportParams = {
-    disableFontFace,
-    fontExtraProperties,
     ownerDocument,
     pdfBug,
     styleElement,
@@ -2787,8 +2785,6 @@ class WorkerTransport {
 
       switch (type) {
         case "Font":
-          const { disableFontFace, fontExtraProperties, pdfBug } = this._params;
-
           if ("error" in exportedData) {
             const exportedError = exportedData.error;
             warn(`Error during font loading: ${exportedError}`);
@@ -2797,20 +2793,16 @@ class WorkerTransport {
           }
 
           const inspectFont =
-            pdfBug && globalThis.FontInspector?.enabled
+            this._params.pdfBug && globalThis.FontInspector?.enabled
               ? (font, url) => globalThis.FontInspector.fontAdded(font, url)
               : null;
-          const font = new FontFaceObject(exportedData, {
-            disableFontFace,
-            fontExtraProperties,
-            inspectFont,
-          });
+          const font = new FontFaceObject(exportedData, inspectFont);
 
           this.fontLoader
             .bind(font)
             .catch(() => messageHandler.sendWithPromise("FontFallback", { id }))
             .finally(() => {
-              if (!fontExtraProperties && font.data) {
+              if (!font.fontExtraProperties && font.data) {
                 // Immediately release the `font.data` property once the font
                 // has been attached to the DOM, since it's no longer needed,
                 // rather than waiting for a `PDFDocumentProxy.cleanup` call.

src/display/font_loader.js

@@ -351,17 +351,20 @@ class FontLoader {
 }
 
 class FontFaceObject {
-  constructor(
-    translatedData,
-    { disableFontFace = false, fontExtraProperties = false, inspectFont = null }
-  ) {
+  constructor(translatedData, inspectFont = null) {
     this.compiledGlyphs = Object.create(null);
     // importing translated data
     for (const i in translatedData) {
       this[i] = translatedData[i];
     }
-    this.disableFontFace = disableFontFace === true;
-    this.fontExtraProperties = fontExtraProperties === true;
+    if (typeof PDFJSDev === "undefined" || PDFJSDev.test("TESTING")) {
+      if (typeof this.disableFontFace !== "boolean") {
+        unreachable("disableFontFace must be available.");
+      }
+      if (typeof this.fontExtraProperties !== "boolean") {
+        unreachable("fontExtraProperties must be available.");
+      }
+    }
     this._inspectFont = inspectFont;
   }