swift中UIView的扩展使用

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github学习地址：https://github.com/potato512/SYSwiftLearning

扩展类代码：

import UIKitextension UIView{    // MARK : 坐标尺寸        var origin:CGPoint {        get {            return self.frame.origin        }        set(newValue) {            var rect = self.frame            rect.origin = newValue            self.frame = rect        }    }        var size:CGSize {        get {            return self.frame.size        }        set(newValue) {            var rect = self.frame            rect.size = newValue            self.frame = rect        }    }        var left:CGFloat {        get {            return self.frame.origin.x        }        set(newValue) {            var rect = self.frame            rect.origin.x = newValue            self.frame = rect        }    }        var top:CGFloat {        get {            return self.frame.origin.y        }        set(newValue) {            var rect = self.frame            rect.origin.y = newValue            self.frame = rect        }    }        var right:CGFloat {        get {            return (self.frame.origin.x + self.frame.size.width)        }        set(newValue) {            var rect = self.frame            rect.origin.x = (newValue - self.frame.size.width)            self.frame = rect        }    }        var bottom:CGFloat {        get {            return (self.frame.origin.y + self.frame.size.height)        }        set(newValue) {            var rect = self.frame            rect.origin.y = (newValue - self.frame.size.height)            self.frame = rect        }    }        // MARK: - 位移        // 移动到指定中心点位置    func moveToPoint(point:CGPoint) -> Void    {        var center = self.center        center.x = point.x        center.y = point.y        self.center = center    }        // 缩放到指定大小    func scaleToSize(scale:CGFloat) -> Void    {        var rect = self.frame        rect.size.width *= scale        rect.size.height *= scale        self.frame = rect    }        // MARK: - 毛玻璃效果        // 毛玻璃    func effectViewWithAlpha(alpha:CGFloat) -> Void    {        let effect = UIBlurEffect.init(style: UIBlurEffectStyle.Light)        let effectView = UIVisualEffectView.init(effect: effect)        effectView.frame = self.bounds        effectView.alpha = alpha                self.addSubview(effectView)    }        // MARK: - 边框属性        // 圆角边框设置    func layer(radius radius:CGFloat, borderWidth:CGFloat, borderColor:UIColor) -> Void    {        if (0.0 < radius)        {            self.layer.cornerRadius = radius            self.layer.masksToBounds = true            self.clipsToBounds = true        }                if (0.0 < borderWidth)        {            self.layer.borderColor = borderColor.CGColor            self.layer.borderWidth = borderWidth        }    }        // MARK: - 翻转        // 旋转 旋转180度 M_PI    func viewTransformWithRotation(rotation:CGFloat) -> Void    {        self.transform = CGAffineTransformMakeRotation(rotation);    }        // 缩放    func viewScaleWithSize(size:CGFloat) -> Void    {        self.transform = CGAffineTransformScale(self.transform, size, size);    }        // 水平，或垂直翻转    func viewFlip(isHorizontal:Bool) -> Void    {        if (isHorizontal)        {            // 水平            self.transform = CGAffineTransformScale(self.transform, -1.0, 1.0);        }        else        {            // 垂直            self.transform = CGAffineTransformScale(self.transform, 1.0, -1.0);        }    }}

使用效果图：

使用示例：

let imageView = UIImageView.init(frame: CGRectMake(10.0, 10.0, 60.0, 60.0))self.view.addSubview(imageView)        imageView.image = UIImage(named: "header")        imageView.backgroundColor = UIColor.colorRandom()        imageView.left = 100.0imageView.top = 100.0imageView.size = CGSizeMake(100.0, 100.0)imageView.moveToPoint(CGPointMake(100.0, 100.0))imageView.scaleToSize(2.0)imageView.effectViewWithAlpha(0.6)        imageView.layer(radius: 3.0, borderWidth: 1.0, borderColor: UIColor.redColor())        imageView.viewFlip(false)        imageView.viewTransformWithRotation(5.0)

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