Function downloadImage

src/composables/useScreenCapture.ts:51–78

* 保存图片到专用下载目录

(imageData: string)

   * 保存图片到专用下载目录
   */
  async function downloadImage(imageData: string) {
    const timestamp = new Date().toISOString().replace(/[:.]/g, '-').slice(0, 19)
    const filename = `chatlab-screenshot-${timestamp}.png`

    try {
      const result = await useCacheService().saveToDownloads(filename, imageData)
      if (result.success) {
        toast.add({
          title: '截图已保存',
          description: `已保存到下载目录：${filename}`,
          color: 'primary',
          actions: [
            {
              label: '打开目录',
              onClick: () => {
                useCacheService().openDir('downloads')
              },
            },
          ],
        })
      } else {
        throw new Error(result.error)
      }
    } catch (error) {
      console.error('保存图片失败:', error)
      toast.fail('保存失败', { description: String(error) })
    }
  }

  /**
   * 显示截屏成功的 Toast