feat: 测试markdown

Yi.Ai.Vue3/src/vue-element-plus-y/utils/useScrollDetector.ts

@@ -0,0 +1,29 @@
+// useScrollDetector.ts
+import type { Ref } from 'vue';
+import { onBeforeUnmount, onMounted, ref } from 'vue';
+
+export default (elementRef: Ref<HTMLElement | null | undefined>) => {
+  const hasVertical = ref(false);
+  const hasHorizontal = ref(false);
+
+  const check = () => {
+    const el = elementRef.value;
+    if (!el)
+      return;
+    hasVertical.value = el.scrollHeight > el.clientHeight;
+    hasHorizontal.value = el.scrollWidth > el.clientWidth;
+  };
+
+  onMounted(() => {
+    check();
+    const observer = new ResizeObserver(check);
+    observer.observe(elementRef.value!);
+    onBeforeUnmount(() => observer.disconnect());
+  });
+
+  return {
+    hasVertical, // 是否有纵向滚动条
+    hasHorizontal, // 是否有横向滚动条
+    check, // 检查滚动条状态
+  };
+};