覆盖NSScroller内容 [英] Overlay NSScroller over content

问题描述

有什么方法可以覆盖NSScroller 超过滚动视图的内容（如在iOS中）？我已经尝试了几种方法：

a）设置滚动视图内容视图（NSClipView）的框架，

b）添加NSScroller对象作为滚动视图的子视图（位于我想要的位置）

< b

c）创建一个完全自定义的滚动视图并将它放置为一个子视图（这个工作，但这意味着我需要重写NSScroller的所有功能） p>

Sparrow 似乎成功地做到了这一点，它似乎通过一个正常的NSScroller子类（看到它响应在系统偏好设置>>外观中设置的滚动设置）。

任何建议都可以使用： - ）

解决方案

您可以在此处设置滚动条的自定义类。

之后，通过覆盖 NSScrollView code>，你会得到他们正确放置。

Is there any way to overlay the NSScroller over the content of the scroll view (like in iOS)? I've already tried several approaches:

a) setting the frame of the scroll view content view (NSClipView) to extend into the bounds of the scroller

b) adding an NSScroller object as a subview of the scroll view (positioned where I want)

c) creating an entirely custom scroller view and placing it as a subview (this worked, but that would mean that I need to rewrite all the functionality of NSScroller)

Sparrow seems to successfully do this, and it seems to do it through a regular NSScroller subclass (seeing as it responds to the scroll settings set in System Preferences >> Appearance). It's not really drawing the scroller that's the issue, its just making it overlay the content.

Any advice is appreciated :-)

解决方案

Here's where you can set the custom class of your scrollbars.

After that, by overriding the -tile method of NSScrollView, you'll get them placed properly.

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