swift关于UIView设置frame值的extension

swift关于UIView设置frame值的extension

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 UIKit

extension 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)
        }
    }
}