在基于视图的NSTableView上自定义右键单击突出显示 [英] Customize right click highlight on view-based NSTableView

问题描述

我有一个基于视图的NSTableView，其中包含一个自定义NSTableCellView和一个自定义NSTableRowView.我定制了这两个类，因为我想更改每行的外观.通过实现[NSTableRowView draw ...]方法，我可以更改背景，选择，分隔符和拖动目标突出显示.

I have a view-based NSTableView with a custom NSTableCellView and a custom NSTableRowView. I customized both of those classes because I want to change the appearance of each row. By implementing the [NSTableRowView draw...] methods I can change the background, the selection, the separator and the drag destination highlight.

我的问题是:当右键单击该行并显示菜单时，如何更改显示的突出显示?

My question is: how can I change the highlight that appears when the row is right clicked and a menu appears?

例如，这是规范:

我想将方形高光更改为圆形，如下所示:

And I want to change the square highlight to a round one, like this:

我想可以通过调用诸如drawMenuHighlightInRect之类的方法在NSTableRowView中完成此操作，但是我找不到它.另外，如果我在子类中自定义所有绘制方法，并且不调用超类，则NSTableRowView类将如何执行此操作?这是由表格本身绘制的吗?

I'd imagine this would be done in NSTableRowView by calling a method like drawMenuHighlightInRect: or something, but I can't find it. Also, how can the NSTableRowView class be doing this if I customized, in my subclass, all of the drawing methods, and I don't call the superclass? Is this drawn by the table itself?

经过更多的实验，我发现可以通过将tableview设置为源列表来实现圆形突出显示.尽管如此，我想知道如何自定义它.

After some more experimenting I found out that the round highlight can be achieved by setting the tableview as a source list. Nonetheless, I want to know how to customize it if possible.

推荐答案

我来看看NSTableRowView

I'd take a look at the NSTableRowView documentation. It's the class that is responsible for drawing selection and drag feedback in a view-based NSTableView.

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