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uni_modules/wot-design-uni/components/composables/useRaf.ts

@@ -0,0 +1,37 @@
+import { ref, onUnmounted } from 'vue'
+import { isDef, isH5, isNumber } from '../common/util'
+
+// 定义回调函数类型
+type RafCallback = (time: number) => void
+
+export function useRaf(callback: RafCallback) {
+  const requestRef = ref<number | null | ReturnType<typeof setTimeout>>(null)
+
+  // 启动动画帧
+  const start = () => {
+    const handle = (time: number) => {
+      callback(time)
+    }
+
+    if (isH5) {
+      requestRef.value = requestAnimationFrame(handle)
+    } else {
+      requestRef.value = setTimeout(() => handle(Date.now()), 1000 / 30)
+    }
+  }
+
+  // 取消动画帧
+  const cancel = () => {
+    if (isH5 && isNumber(requestRef.value)) {
+      cancelAnimationFrame(requestRef.value!)
+    } else if (isDef(requestRef.value)) {
+      clearTimeout(requestRef.value)
+    }
+  }
+
+  onUnmounted(() => {
+    cancel()
+  })
+
+  return { start, cancel }
+}