feat: introduce font picker (#8012)

Co-authored-by: dwelle <5153846+dwelle@users.noreply.github.com>

excalidraw-app/index.html

@@ -114,6 +114,14 @@
       ) {
         window.location.href = "https://app.excalidraw.com";
       }
+
+      // point into our CDN in prod
+      window.EXCALIDRAW_ASSET_PATH =
+        "https://excalidraw.nyc3.cdn.digitaloceanspaces.com/fonts/oss/";
+    </script>
+    <% } else { %>
+    <script>
+      window.EXCALIDRAW_ASSET_PATH = window.origin;
     </script>
     <% } %>
 
@@ -124,22 +132,74 @@
     <!-- Excalidraw version -->
     <meta name="version" content="{version}" />
 
+    <!-- Warmup the connection for Google fonts -->
+    <link rel="preconnect" href="https://fonts.googleapis.com" />
+    <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin />
+
+    <!-- Preload all default fonts and Virgil for backwards compatibility to avoid swap on init -->
+    <% if (typeof PROD != 'undefined' && PROD == true) { %>
     <link
       rel="preload"
-      href="/Virgil.woff2"
+      href="https://excalidraw.nyc3.cdn.digitaloceanspaces.com/fonts/oss/Excalifont-Regular-C9eKQy_N.woff2"
       as="font"
       type="font/woff2"
       crossorigin="anonymous"
     />
     <link
       rel="preload"
-      href="/Cascadia.woff2"
+      href="https://excalidraw.nyc3.cdn.digitaloceanspaces.com/fonts/oss/Virgil-Regular-hO16qHwV.woff2"
+      as="font"
+      type="font/woff2"
+      crossorigin="anonymous"
+    />
+    <link
+      rel="preload"
+      href="https://excalidraw.nyc3.cdn.digitaloceanspaces.com/fonts/oss/ComicShanns-Regular-D0c8wzsC.woff2"
+      as="font"
+      type="font/woff2"
+      crossorigin="anonymous"
+    />
+    <% } else { %>
+    <!-- in DEV we need to preload from the local server and without the hash -->
+    <link
+      rel="preload"
+      href="../packages/excalidraw/fonts/assets/Excalifont-Regular.woff2"
+      as="font"
+      type="font/woff2"
+      crossorigin="anonymous"
+    />
+    <link
+      rel="preload"
+      href="../packages/excalidraw/fonts/assets/Virgil-Regular.woff2"
+      as="font"
+      type="font/woff2"
+      crossorigin="anonymous"
+    />
+    <link
+      rel="preload"
+      href="../packages/excalidraw/fonts/assets/ComicShanns-Regular.woff2"
+      as="font"
+      type="font/woff2"
+      crossorigin="anonymous"
+    />
+    <% } %>
+
+    <!-- For Nunito only preload the latin range, which should be enough for now -->
+    <link
+      rel="preload"
+      href="https://fonts.gstatic.com/s/nunito/v26/XRXI3I6Li01BKofiOc5wtlZ2di8HDIkhdTQ3j6zbXWjgeg.woff2"
       as="font"
       type="font/woff2"
       crossorigin="anonymous"
     />
 
-    <link rel="stylesheet" href="/fonts/fonts.css" type="text/css" />
+    <!-- Register Assistant as the UI font, before the scene inits -->
+    <link
+      rel="stylesheet"
+      href="../packages/excalidraw/fonts/assets/fonts.css"
+      type="text/css"
+    />
+
     <% if (typeof VITE_APP_DEV_DISABLE_LIVE_RELOAD != 'undefined' &&
     VITE_APP_DEV_DISABLE_LIVE_RELOAD == true) { %>
     <script>
@@ -158,7 +218,6 @@
     </script>
     <% } %>
     <script>
-      window.EXCALIDRAW_ASSET_PATH = "/";
       // setting this so that libraries installation reuses this window tab.
       window.name = "_excalidraw";
     </script>

excalidraw-app/package.json

@@ -36,7 +36,8 @@
     "build:version": "node ../scripts/build-version.js",
     "build": "yarn build:app && yarn build:version",
     "start": "yarn && vite",
-    "start:production": "npm run build && npx http-server build -a localhost -p 5001 -o",
+    "start:production": "yarn build && yarn serve",
+    "serve": "npx http-server build -a localhost -p 5001 -o",
     "build:preview": "yarn build && vite preview --port 5000"
   }
 }

excalidraw-app/tests/__snapshots__/MobileMenu.test.tsx.snap

@@ -5,7 +5,7 @@ exports[`Test MobileMenu > should initialize with welcome screen and hide once u
   class="welcome-screen-center"
 >
   <div
-    class="welcome-screen-center__logo virgil welcome-screen-decor"
+    class="welcome-screen-center__logo excalifont welcome-screen-decor"
   >
     <div
       class="ExcalidrawLogo is-small"
@@ -48,7 +48,7 @@ exports[`Test MobileMenu > should initialize with welcome screen and hide once u
     </div>
   </div>
   <div
-    class="welcome-screen-center__heading welcome-screen-decor virgil"
+    class="welcome-screen-center__heading welcome-screen-decor excalifont"
   >
     All your data is saved locally in your browser.
   </div>

excalidraw-app/vite.config.mts

@@ -5,6 +5,7 @@ import { ViteEjsPlugin } from "vite-plugin-ejs";
 import { VitePWA } from "vite-plugin-pwa";
 import checker from "vite-plugin-checker";
 import { createHtmlPlugin } from "vite-plugin-html";
+import { woff2BrowserPlugin } from "../scripts/woff2/woff2-vite-plugins";
 
 // To load .env.local variables
 const envVars = loadEnv("", `../`);
@@ -22,6 +23,14 @@ export default defineConfig({
     outDir: "build",
     rollupOptions: {
       output: {
+        assetFileNames(chunkInfo) {
+          if (chunkInfo?.name?.endsWith(".woff2")) {
+            // put on root so we are flexible about the CDN path
+            return '[name]-[hash][extname]';
+          }
+
+          return 'assets/[name]-[hash][extname]';
+        },
         // Creating separate chunk for locales except for en and percentages.json so they
         // can be cached at runtime and not merged with
         // app precache. en.json and percentages.json are needed for first load
@@ -35,12 +44,13 @@ export default defineConfig({
             // Taking the substring after "locales/"
             return `locales/${id.substring(index + 8)}`;
           }
-        },
+        }
       },
     },
     sourcemap: true,
   },
   plugins: [
+    woff2BrowserPlugin(),
     react(),
     checker({
       typescript: true,