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 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 / 2        }    }        var middleY : CGFloat {                get {                        return height / 2        }    }        var middlePoint : CGPoint {            get {                       return CGPoint(x: middleX, y: middleY)        }    }}