Add fullscreen preview for caption settings + optimize subtitle rendering

src/components/player/base/SubtitleView.tsx

@@ -11,6 +11,10 @@ import { Transition } from "@/components/Transition";
 import { usePlayerStore } from "@/stores/player/store";
 import { SubtitleStyling, useSubtitleStore } from "@/stores/subtitles";
 
+const wordOverrides: Record<string, string> = {
+  i: "I",
+};
+
 export function CaptionCue({
   text,
   styling,
@@ -20,10 +24,7 @@ export function CaptionCue({
   styling: SubtitleStyling;
   overrideCasing: boolean;
 }) {
-  const wordOverrides: Record<string, string> = {
-    i: "I",
-  };
-
+  const parsedHtml = useMemo(() => {
     let textToUse = text;
     if (overrideCasing && text) {
       textToUse = text.slice(0, 1) + text.slice(1).toLowerCase();
@@ -44,6 +45,9 @@ export function CaptionCue({
       ALLOWED_ATTR: ["title", "lang"],
     });
 
+    return html;
+  }, [text, overrideCasing]);
+
   return (
     <p
       className="pointer-events-none mb-1 select-none rounded px-4 py-1 text-center leading-normal [text-shadow:0_2px_4px_rgba(0,0,0,0.5)]"
@@ -57,7 +61,7 @@ export function CaptionCue({
         // its sanitised a few lines up
         // eslint-disable-next-line react/no-danger
         dangerouslySetInnerHTML={{
-          __html: html,
+          __html: parsedHtml,
         }}
         dir="auto"
       />

src/pages/Settings.tsx

@@ -32,7 +32,7 @@ function SettingsLayout(props: { children: React.ReactNode }) {
         )}
       >
         <SidebarPart />
-        <div className="space-y-16">{props.children}</div>
+        <div>{props.children}</div>
       </div>
     </WideContainer>
   );
@@ -80,13 +80,13 @@ export function SettingsPage() {
             <RegisterCalloutPart />
           )}
         </div>
-        <div id="settings-locale">
+        <div id="settings-locale" className="mt-48">
           <LocalePart />
         </div>
-        <div id="settings-appearance">
+        <div id="settings-appearance" className="mt-48">
           <ThemePart active={activeTheme} setTheme={setTheme} />
         </div>
-        <div id="settings-captions">
+        <div id="settings-captions" className="mt-48">
           <CaptionsPart />
         </div>
       </SettingsLayout>

src/pages/settings/CaptionsPart.tsx

@@ -1,3 +1,7 @@
+import classNames from "classnames";
+import { useState } from "react";
+
+import { Icon, Icons } from "@/components/Icon";
 import {
   CaptionSetting,
   ColorOption,
@@ -5,12 +9,61 @@ import {
 } from "@/components/player/atoms/settings/CaptionSettingsView";
 import { Menu } from "@/components/player/internals/ContextMenu";
 import { CaptionCue } from "@/components/player/Player";
+import { Transition } from "@/components/Transition";
 import { Heading1 } from "@/components/utils/Text";
-import { useSubtitleStore } from "@/stores/subtitles";
+import { SubtitleStyling, useSubtitleStore } from "@/stores/subtitles";
+
+export function CaptionPreview(props: {
+  fullscreen?: boolean;
+  show?: boolean;
+  styling: SubtitleStyling;
+  onToggle: () => void;
+}) {
+  return (
+    <div
+      className={classNames({
+        "pointer-events-none overflow-hidden w-full rounded": true,
+        "aspect-video relative": !props.fullscreen,
+        "fixed inset-0 z-50": props.fullscreen,
+      })}
+    >
+      <Transition animation="fade" show={props.show}>
+        <div
+          className="absolute inset-0 pointer-events-auto"
+          style={{
+            backgroundImage:
+              "radial-gradient(102.95% 87.07% at 100% 100%, #EEAA45 0%, rgba(165, 186, 151, 0.56) 54.69%, rgba(74, 207, 254, 0.00) 100%), linear-gradient(180deg, #48D3FF 0%, #3B27B2 100%)",
+          }}
+        >
+          <div
+            className="bg-black absolute right-3 top-3 text-white bg-opacity-25 duration-100 transition-[background-color,transform] active:scale-110 hover:bg-opacity-50 p-2 rounded-md cursor-pointer"
+            onClick={props.onToggle}
+          >
+            <Icon icon={props.fullscreen ? Icons.X : Icons.EXPAND} />
+          </div>
+
+          <div className="text-white pointer-events-none absolute flex w-full flex-col items-center transition-[bottom] bottom-0 p-4">
+            <div
+              className={
+                props.fullscreen ? "" : "transform origin-bottom text-[0.5rem]"
+              }
+            >
+              <CaptionCue
+                text="I must not fear. Fear is the mind-killer."
+                styling={props.styling}
+                overrideCasing={false}
+              />
+            </div>
+          </div>
+        </div>
+      </Transition>
+    </div>
+  );
+}
 
 export function CaptionsPart() {
   const styling = useSubtitleStore((s) => s.styling);
-  const isFullscreenPreview = false;
+  const [fullscreenPreview, setFullscreenPreview] = useState(false);
   const updateStyling = useSubtitleStore((s) => s.updateStyling);
 
   return (
@@ -48,30 +101,17 @@ export function CaptionsPart() {
             </div>
           </div>
         </div>
-        <div
-          className="w-full aspect-video rounded relative overflow-hidden"
-          style={{
-            backgroundImage:
-              "radial-gradient(102.95% 87.07% at 100% 100%, #EEAA45 0%, rgba(165, 186, 151, 0.56) 54.69%, rgba(74, 207, 254, 0.00) 100%), linear-gradient(180deg, #48D3FF 0%, #3B27B2 100%)",
-          }}
-        >
-          <div className="text-white pointer-events-none absolute flex w-full flex-col items-center transition-[bottom] bottom-0 p-4">
-            <div
-              className={
-                isFullscreenPreview
-                  ? ""
-                  : "transform origin-bottom text-[0.5rem]"
-              }
-            >
-              <CaptionCue
-                // Can we keep this Dune quote 🥺
-                text="I must not fear. Fear is the mind-killer."
+        <CaptionPreview
+          show
           styling={styling}
-                overrideCasing={false}
+          onToggle={() => setFullscreenPreview((s) => !s)}
+        />
+        <CaptionPreview
+          show={fullscreenPreview}
+          fullscreen
+          styling={styling}
+          onToggle={() => setFullscreenPreview((s) => !s)}
         />
-            </div>
-          </div>
-        </div>
       </div>
     </div>
   );