NSCollectionViewItem 的项目出口的 NSView 子类绘制不一致

发布于 2024-10-19 07:07:20 字数 703 浏览 1 评论 0原文

我到处寻找这个但没有运气。我在我的项目中使用 NSCollectionView 并通过数组控制器绑定到核心数据。为了使它看起来像我想要的那样，我使用新的drawRect方法对NSView进行了子类化，并将其与NSCollectionViewItem的视图出口连接起来。一切正常，绑定也很好，但由于某种原因，它只会在集合视图中的第一个项目上执行自定义绘图。我猜这与 NSCollectionView 在创建新项目时复制笔尖有关。首先是我的drawRect：方法：

@implementation CompanyItemView

-(void)drawRect:(NSRect)dirtyRect
{   
    NSBezierPath *path = [NSBezierPath bezierPathWithRoundedRect:[self frame]  
                                                         xRadius:6.0f     
                                                         yRadius:6.0f];

    [[NSColor whiteColor] set];
    [path fill];

    [[NSColor darkGrayColor] set];
    [path stroke];
}

@end

有什么想法吗？

原文

I have searched everywhere for this one but have had no luck.
I am using an NSCollectionView in my project with bindings to Core Data via an Array Controller.
In order to make it look the way I want I have subclassed NSView with a new drawRect method and connected this with the view outlet of the NSCollectionViewItem.
It all works properly and the bindings are good but it will only perform the custom drawing on the first item in the collection view for some reason. I'm guessing it is to do with the fact that NSCollectionView copies the nibs when creating a new item.
Here is my drawRect: method firstly:

@implementation CompanyItemView

-(void)drawRect:(NSRect)dirtyRect
{   
    NSBezierPath *path = [NSBezierPath bezierPathWithRoundedRect:[self frame]  
                                                         xRadius:6.0f     
                                                         yRadius:6.0f];

    [[NSColor whiteColor] set];
    [path fill];

    [[NSColor darkGrayColor] set];
    [path stroke];
}

@end

Any ideas?

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