如何使圆角NSTableView行? [英] How to make round cornered NSTableView rows?

问题描述

我想做这样的事情(在新的iTunes上):

I'd like to make something like this (on the new iTunes):

正如你所当行被选中的亮点"的状态看到的是一个圆角的行.结果 我该如何实现这样的目标?

As you can see when the row is selected it's "highlight" state is a round cornered row.
How can I achieve something like this?

推荐答案

您需要将NSTableview子类化并覆盖-highlightSelectionInClipRect:方法.

You need to subclass NSTableview and override -highlightSelectionInClipRect: method.

可以这样做:

在 Attributes Inspector 中将tableView的突出显示模式从常规更改为源列表:

Change your tableView's highlighting mode from regular to Source list in Attributes Inspector:

现在像这样子类NSTableView:

-(void)highlightSelectionInClipRect:(NSRect)theClipRect
{
    NSRange visibleRowIndexes = [self rowsInRect:theClipRect];
    NSIndexSet *selectedRowIndexes = [self selectedRowIndexes];
    NSUInteger endRow = visibleRowIndexes.location + visibleRowIndexes.length;
    NSUInteger row;

    for (row=visibleRowIndexes.location; row<endRow; row++)
    {
        if([selectedRowIndexes containsIndex:row])
        {
            NSRect rowRect = NSInsetRect([self rectOfRow:row], 3, 4);
            NSBezierPath *path = [NSBezierPath bezierPathWithRoundedRect:rowRect xRadius:4.0 yRadius:4.0];
            [[NSColor colorWithCalibratedRed:0.474 green:0.588 blue:0.743 alpha:1] set];
            [path fill];
        }
    }
}

结果:

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