使用 IBInspectable 时,界面构建器如何决定何时引入分隔符

How does the interface builder decide when a separator will be introduced when using IBInspectable

现在我正在创建一个自定义视图,我想知道 interface builder 如何决定何时引入一行。

如您所见,它将它分成 3 个 sub groups 但是我想知道如何确定子组的开始和结束位置。

因为我所做的就是像这样在彼此下面创建 IBInspectables

@IBInspectable var dotCount: Int = 0 { didSet { setup() } }

@IBInspectable var dotSize: CGFloat = 7 { didSet { dotSize = dotSize + 1.5 } }

@IBInspectable var dotSpacing: CGFloat = 10

@IBInspectable var dotColor: UIColor = UIColor.clear {
    didSet {
        for dot in dots {
            if let dot = dot, dot != selectedView {
                dot.backgroundColor = dotColor
            }
        }
    }
}

@IBInspectable var borderWidth: CGFloat = 0 {
    didSet {
        for dot in dots {
            if let dot = dot, dot != selectedView {
                dot.layer.borderWidth = borderWidth
            }
        }
    }
}

@IBInspectable var borderColor: UIColor = UIColor.clear {
    didSet {
        for dot in dots {
            if let dot = dot, dot != selectedView {
                dot.layer.borderColor = borderColor.cgColor
            }
        }
    }
}

@IBInspectable var dotSelectedColor: UIColor = UIColor.black {
    didSet {
        if let dot = selectedView {
            dot.backgroundColor = dotSelectedColor
        }
    }
}

@IBInspectable var dotSelectedBorderColor: UIColor = UIColor.clear {
    didSet {
        if let dot = selectedView {
            dot.layer.borderColor = dotSelectedBorderColor.cgColor
        }
    }
}

@IBInspectable var dotSelectedBorderWidth: CGFloat = 0.0 {
    didSet {
        if let dot = selectedView {
            dot.layer.borderWidth = dotSelectedBorderWidth
        }
    }
}

我很好奇这是如何工作的,因为我相信以某种方式划分元素很有用。

希望有人能告诉我这是如何工作的。

它按名称排序和分隔,因此您无需明确定义分隔线,例如:

@IBInspectable var cornerRadius: CGFloat = 0 {
   didSet {
       layer.cornerRadius = cornerRadius
       layer.masksToBounds = cornerRadius > 0
   }
}

@IBInspectable var borderWidth: CGFloat = 0 {
   didSet {
       layer.borderWidth = borderWidth
   }
}

@IBInspectable var borderColor: UIColor? {
   didSet {
       layer.borderColor = borderColor?.CGColor
   }
}

如您所见,角半径与边框属性分开,因为边框属性具有相同的前缀:Border <subject>.