objective-c - NSImageView圆角+描边

Question

我有子类 NSImageView，我想用圆角画一个边框。它可以工作，但我还需要剪掉图像的角。

请看我的截图:

我创建了这段代码来绘制边框/角。

- (void)drawRect:(NSRect)dirtyRect
{
    [super drawRect:dirtyRect];

    NSColor *strokeColor;
    if(self.isSelected)
        strokeColor = [NSColor colorFromHexRGB:@"f9eca2"];
    else
        strokeColor = [NSColor colorFromHexRGB:@"000000"];

    [strokeColor set];    
    [[NSBezierPath bezierPathWithRoundedRect:NSInsetRect(dirtyRect, 1, 1) xRadius:5 yRadius:5] stroke];
}

我应该怎么做才能制作图像剪辑？

编辑:

好吧，我修复了它，但我觉得这样做很丑陋。有什么更聪明的吗？

新代码:

- (void)drawRect:(NSRect)dirtyRect
{
    NSBezierPath *path = [NSBezierPath bezierPathWithRoundedRect:NSInsetRect(dirtyRect, 2, 2) xRadius:5 yRadius:5];

    [path setLineWidth:4.0];
    [path addClip];

    [self.image drawAtPoint: NSZeroPoint
                 fromRect:dirtyRect
                 operation:NSCompositeSourceOver
                 fraction: 1.0];

    [super drawRect:dirtyRect];

    NSColor *strokeColor;
    if(self.isSelected)
    {
        strokeColor = [NSColor colorFromHexRGB:@"f9eca2"];
    }
    else
        strokeColor = [NSColor colorFromHexRGB:@"000000"];

    [strokeColor set];    
    [NSBezierPath setDefaultLineWidth:4.0];
    [[NSBezierPath bezierPathWithRoundedRect:NSInsetRect(dirtyRect, 2, 2) xRadius:5 yRadius:5] stroke];
}

Answer 1

将 NSImageView 层的角半径也设置为 5 px，并将其 maskToBounds 属性设置为 YES。