Initial commit

src/components/cardStack/hooks/useScrollProgress.ts

@@ -0,0 +1,30 @@
+import { useCallback, useEffect, useState } from "react";
+import { EmblaCarouselType } from "embla-carousel";
+
+export const useScrollProgress = (emblaApi: EmblaCarouselType | undefined) => {
+    const [scrollProgress, setScrollProgress] = useState(0);
+
+    const onScroll = useCallback((emblaApi: EmblaCarouselType) => {
+        const progress = Math.max(0, Math.min(1, emblaApi.scrollProgress()));
+        setScrollProgress(progress * 100);
+    }, []);
+
+    useEffect(() => {
+        if (!emblaApi) return;
+
+        onScroll(emblaApi);
+        emblaApi
+            .on("reInit", onScroll)
+            .on("scroll", onScroll)
+            .on("slideFocus", onScroll);
+
+        return () => {
+            emblaApi
+                .off("reInit", onScroll)
+                .off("scroll", onScroll)
+                .off("slideFocus", onScroll);
+        };
+    }, [emblaApi, onScroll]);
+
+    return scrollProgress;
+};