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IOS 开发之swift中UIView的扩展使用的实例

2019年07月24日  | 移动技术网IT编程  | 我要评论

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ios 开发之swift中uiview的扩展使用的实例

扩展类代码：

import uikit 
 
extension 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 = 100.0 
imageview.top = 100.0 
imageview.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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