Function capture

src/composables/useScreenCapture.ts:117–124

* 捕获指定选择器的元素 * @param selector CSS 选择器（class 或 id） * @param options 截屏选项

(selector: string, options?: ScreenCaptureOptions)

   * @param options 截屏选项
   */
  async function capture(selector: string, options?: ScreenCaptureOptions): Promise<boolean> {
    const element = document.querySelector(selector) as HTMLElement | null
    if (!element) {
      captureError.value = `未找到元素: ${selector}`
      return false
    }
    return captureElement(element, options)
  }

  /**
   * 捕获指定的 DOM 元素