Added drag-to-scroll functionality for Testimonials section (#533)

src/components/ui/infinite-moving-cards.tsx

@@ -20,9 +20,78 @@ export const InfiniteMovingCards = ({
   const containerRef = React.useRef<HTMLDivElement>(null);
   const scrollerRef = React.useRef<HTMLUListElement>(null);
 
+  const [isDown, setIsDown] = useState<boolean>(false);
+  const [startX, setStartX] = useState<number>(0.0);
+  const [scrollLeft, setscrollLeft] = useState<number>(0.0);
+  const [totalWidth, setTotalWidth] = useState<number>(0.0);
+
+  useEffect(() => {
+    const slider = containerRef.current;
+    const handleMouseDown = (event: MouseEvent) => {
+      if (!slider) return;
+      setIsDown(true);
+      setStartX(event.pageX - slider.offsetLeft);
+      setscrollLeft(slider.scrollLeft);
+    };
+
+    const handleMouseMove = (event: MouseEvent) => {
+      if (slider && isDown) {
+        const x = event.pageX - slider.offsetLeft;
+        const walk = x - startX;
+        const newScrollLeft = scrollLeft - walk;
+
+        const maxScrollLeft = totalWidth - slider.clientWidth;
+
+        if (newScrollLeft < 0) slider.scrollLeft = 0;
+        else if (newScrollLeft > maxScrollLeft)
+          slider.scrollLeft = maxScrollLeft;
+        else slider.scrollLeft = newScrollLeft;
+      }
+    };
+
+    const handleMouseLeave = () => {
+      setIsDown(false);
+    };
+
+    const handleMouseUp = () => {
+      setIsDown(false);
+    };
+
+    if (slider) {
+      slider.addEventListener('mousedown', handleMouseDown);
+      slider.addEventListener('mousemove', handleMouseMove);
+      slider.addEventListener('mouseleave', handleMouseLeave);
+      slider.addEventListener('mouseup', handleMouseUp);
+    }
+
+    return () => {
+      if (slider) {
+        slider.removeEventListener('mousedown', handleMouseDown);
+        slider.removeEventListener('mousemove', handleMouseMove);
+        slider.removeEventListener('mouseleave', handleMouseLeave);
+        slider.removeEventListener('mouseup', handleMouseMove);
+      }
+    };
+  }, [isDown, startX, scrollLeft]);
+
   useEffect(() => {
     addAnimation();
+    const scroller = scrollerRef.current;
+    if (scroller) {
+      const listItems = scroller.querySelectorAll('li');
+      let width = 0,
+        length = 0;
+      listItems.forEach((item) => {
+        if (length < listItems.length / 2)
+          width +=
+            (item as HTMLElement).offsetWidth +
+            parseFloat(getComputedStyle(item).marginRight);
+        length++;
+      });
+      setTotalWidth(width);
+    }
   }, []);
+
   const [start, setStart] = useState(false);
   function addAnimation() {
     if (containerRef.current && scrollerRef.current) {
@@ -64,6 +133,9 @@ export const InfiniteMovingCards = ({
         'scroller relative z-20  max-w-7xl overflow-hidden  [mask-image:linear-gradient(to_right,transparent,white_20%,white_80%,transparent)]',
         className
       )}
+      style={{
+        userSelect: 'none',
+      }}
     >
       <ul
         ref={scrollerRef}