# 非小部件对象

|                                                                                                                                  |                                                                                                                                                                    |
| -------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| `Animation`用于在目标时间内将小部件的属性（大小/位置/中心等）更改为目标值。`transition`提供各种功能。您可以使用它们为小部件设置动画并构建非常流畅的 UI 行为。                                    | <img src="https://kivy.org/doc/stable/_images/gs-animation.gif" alt="动画图片" data-size="original">                                                                   |
| `Atlas`是一个用于管理纹理贴图的类，即将多个纹理打包到一个图像中。这使您可以减少加载的图像数量，从而加快应用程序的启动速度。                                                                | <img src="https://kivy.org/doc/stable/_images/gs-atlas.png" alt="地图集_img" data-size="original">                                                                    |
| `Clock`为您提供了一种按设定时间间隔安排作业的便捷方式，优于`sleep()`，后者会阻塞 kivy 事件循环。这些间隔可在 OpenGL 绘图指令前后设置 。时钟还为您提供了一种创建触发事件的方法，这些事件被组合在一起，并且在下一帧之前仅调用一次。 | <ul><li><code>schedule\_once()</code></li><li><code>schedule\_interval()</code></li><li><code>unschedule()</code></li><li><code>create\_trigger()</code></li></ul> |
| `UrlRequest` 对于不阻塞事件循环的异步请求很有用。您可以使用它通过回调来管理 URL 请求的进度。                                                                          |                                                                                                                                                                    |

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