[Update] Starting up: Adjust announcement button's design and animation.

src-ui/app/splash_component/SplashComponent.jsx

@@ -5,6 +5,7 @@ import { DownloadModelsContainer } from "./download_models_container/DownloadMod
 import MegaphoneSvg from "@images/megaphone.svg?react";
 import XMarkSvg from "@images/cancel.svg?react";
 import { appWindow } from "@tauri-apps/api/window";
+import clsx from "clsx";
 
 export const SplashComponent = () => {
     return (
@@ -17,33 +18,57 @@ export const SplashComponent = () => {
     );
 };
 
-const AnnouncementsContainer = () => {
-    const labels = ["VRCT Real-Time Announcements", "VRCTからのお知らせ"];
-    const [currentLabelIndex, setCurrentLabelIndex] = useState(0);
+const SHOW_MEGAPHONE_TIME = 1000;
 
+const AnnouncementsContainer = () => {
+    const labels = ["Check the Latest Status", "最新の状況を確認"];
+    const [is_shown, setIsShown] = useState(0);
+    const [currentLabelIndex, setCurrentLabelIndex] = useState(0);
+    const [is_labels_active, setIsLabelsActive] = useState(false);
 
     useEffect(() => {
-        const labelInterval = setInterval(() => {
-            setCurrentLabelIndex((prevIndex) => (prevIndex + 1) % labels.length);
-        }, 6000);
-        return () => clearInterval(labelInterval);
-    }, [labels.length]);
+        const showTimeout = setTimeout(() => {
+            setIsShown(true);
+        }, SHOW_MEGAPHONE_TIME);
+
+        const labelsTimeout = setTimeout(() => {
+            setIsLabelsActive(true);
+        }, SHOW_MEGAPHONE_TIME + 500);
+
+        let labelInterval;
+        if (is_labels_active) {
+            labelInterval = setInterval(() => {
+                setCurrentLabelIndex((prevIndex) => (prevIndex + 1) % labels.length);
+            }, 4000);
+        }
+
+        return () => {
+            clearTimeout(showTimeout);
+            clearTimeout(labelsTimeout);
+            if (labelInterval) clearInterval(labelInterval);
+        };
+    }, [is_labels_active, labels.length]);
+
 
     return (
         <a
+            className={clsx(styles.announcements_button_wrapper, { [styles.is_shown]: is_shown })}
             href="https://docs.google.com/spreadsheets/d/1_L5i-1U6PB1dnaPPTE_5uKMfqOpkLziPyRkiMLi4mqU/edit?usp=sharing"
             target="_blank"
             rel="noreferrer"
         >
             <button className={styles.announcements_button}>
                 <MegaphoneSvg className={styles.announcements_link_svg} />
-                <p className={styles.announcements_label}>{labels[currentLabelIndex]}</p>
+                <p className={clsx(styles.announcements_label, { [styles.is_labels_active]: is_labels_active })}>
+                    {labels[currentLabelIndex]}
+                </p>
             </button>
         </a>
     );
 };
 
 
+
 const CloseButtonContainer = () => {
     const close = () => {
         appWindow.close();