class UILabelPadding : UILabel {
private var padding = UIEdgeInsetsZero
@IBInspectable
var paddingLeft: CGFloat {
get { return padding.left }
set { padding.left = newValue }
}
@IBInspectable
var paddingRight: CGFloat {
get { return padding.right }
set { padding.right = newValue }
}
@IBInspectable
var paddingTop: CGFloat {
get { return padding.top }
set { padding.top = newValue }
}
@IBInspectable
var paddingBottom: CGFloat {
get { return padding.bottom }
set { padding.bottom = newValue }
}
override func drawTextInRect(rect: CGRect) {
super.drawTextInRect(UIEdgeInsetsInsetRect(rect, padding))
}
override func textRectForBounds(bounds: CGRect, limitedToNumberOfLines numberOfLines: Int) -> CGRect {
let insets = self.padding
var rect = super.textRectForBounds(UIEdgeInsetsInsetRect(bounds, insets), limitedToNumberOfLines: numberOfLines)
rect.origin.x -= insets.left
rect.origin.y -= insets.top
rect.size.width += (insets.left + insets.right)
rect.size.height += (insets.top + insets.bottom)
return rect
}
}
代码说明：
通过 IBInspectable 可以支持 UILable 在 Storyboard 里面就能指定内边距，非常方便：
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参考
参考这篇文章 http://stackoverflow.com/questions/21167226/resizing-a-uilabel-to-accomodate-insets 改的，注意这篇文章 http://stackoverflow.com/questions/3476646/uilabel-text-margin 有问题。
本文转自博客园农民伯伯的博客，原文链接：【Swift】UILabel 设置内边距，如需转载请自行联系原博主。
