如何在NSImage周围绘制彩色边框？ [英] How to draw a colored border around NSImage?

问题描述

我做了一些研究，但所有的答案，我得到的是iOS，如何在OSX应用程序中绘制一个彩色边框围绕NSImage？我尝试使用NSImage的imageView属性来设置它的边框宽度和颜色，但它似乎不工作...

I did some research but all the answers I got were for iOS, how can I draw a colored border around NSImage in OSX app? I tried using imageView property of NSImage to set it's border width and color, but it doesn't seem to be working...

任何帮助是非常感谢！

Any kind of help is highly appreciated!

推荐答案

尝试这样而不创建子类也是可能的。您还可以相应地设置宽度和半径： -

Try like this without creating subclass also it is possible. Also you can set the width ans radius accordingly:-

[imgView setWantsLayer:YES];
imgView.layer.borderWidth = 1.0;
imgView.layer.cornerRadius = 8.0;
imgView.layer.masksToBounds = YES;
CGColorRef color = CGColorRetain([NSColor colorWithCalibratedRed:0 green:100 blue:0 alpha:0.5f].CGColor);
[imgView.layer setBorderColor:color];

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