swift关于UIView设置frame值的extension

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使用

说明

1. 使用如上图,很简单,不再赘述

2. 在extension给添加的计算属性提供getter,setter方法即可

源码

//
// UIView+SetRect.swift
// YouXianMing
//
// Created by YouXianMing on 15/9/29.
// Copyright © 2015年 YouXianMing All rights reserved.
//import UIKitextension UIView { // x
var x : CGFloat { get { return frame.origin.x
} set(newVal) { var tmpFrame : CGRect = frame
tmpFrame.origin.x = newVal
frame = tmpFrame
}
} // y
var y : CGFloat { get { return frame.origin.y
} set(newVal) { var tmpFrame : CGRect = frame
tmpFrame.origin.y = newVal
frame = tmpFrame
}
} // height
var height : CGFloat { get { return frame.size.height
} set(newVal) { var tmpFrame : CGRect = frame
tmpFrame.size.height = newVal
frame = tmpFrame
}
} // width
var width : CGFloat { get { return frame.size.width
} set(newVal) { var tmpFrame : CGRect = frame
tmpFrame.size.width = newVal
frame = tmpFrame
}
} // left
var left : CGFloat { get { return x
} set(newVal) { x = newVal
}
} // right
var right : CGFloat { get { return x + width
} set(newVal) { x = newVal - width
}
} // top
var top : CGFloat { get { return y
} set(newVal) { y = newVal
}
} // bottom
var bottom : CGFloat { get { return y + height
} set(newVal) { y = newVal - height
}
} var centerX : CGFloat { get { return center.x
} set(newVal) { center = CGPoint(x: newVal, y: center.y)
}
} var centerY : CGFloat { get { return center.y
} set(newVal) { center = CGPoint(x: center.x, y: newVal)
}
} var middleX : CGFloat { get { return width /
}
} var middleY : CGFloat { get { return height /
}
} var middlePoint : CGPoint { get { return CGPoint(x: middleX, y: middleY)
}
}
}