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SpreadButton

##Summary:
A Button spread its sub path buttons like the flower or sickle(two spread mode) if you click it, once again, close.And you can also change the SpreadPositionMode between FixedMode & TouchBorderMode， while one like the marbleBall fixed on the wall, another one like the AssistiveTouch is iphone。
顾名思义，一个会散开的功能按钮，主体按钮被点击后，触发目录按钮的展开，选择其中一个功能子按钮或点击任意地方，触发子按钮的收缩隐藏。 SpreadButton设计有 2种展开方式，2种位置模式，8种展开方向。

###近期更新：

  • 0.2.2: SpreadButton可以在任何容器内部活动(处理了SpreadButton只能相对于整个ScreenSize活动的设计缺陷)
  • 0.2.1: 适配 swift3.0
  • 0.2.0: 更新 swift2.2语法, oc版可变参对CGPoint更稳定
  • 0.1.6: 更新 objective-C 版
  • 0.1.5: SpreadPositionModeTouchBorder (you can use it like the IOS AssistiveTouch but in the app)(应用内的AssistiveTouch)
  • 0.1.4: SpreadPositionModeFixed 增加物理吸附效果(可拖动，送开回弹)，凸显层次性，告别生硬的坐标约束

个人博客原文: http://zyden.vicp.cc/zyspreadbutton/
欢迎转载，请注明出处谢谢


**两种展开模式(SpreadMode)：**镰刀模式 & 花朵模式


**两种位置模式(SpreadPositionMode)：**锁定模式 & 粘连边缘模式，在粘连边缘模式下，根据主体按钮的位置，会实时更新展开模式

##Contact
####you can play the demo online in appetize.io
####在这里可以在线试玩这个应用

##Installation
####Cocoapods

pod 'SpreadButton', '~> 0.2.2'

####Fork from my github you can select SpreadButton coded by objc or swift in directory corresponding
目前已支持oc和swift两种语言，可以根据需要在相应的文件夹中找到


##Custom-made **Property：** - animationDuring: assign the ‘animationDuring’ can also change ‘animationDuringSpread’ & ‘animationDuringClose’，default is 0.2 - coverAlpha - coverColor - mode: `case SpreadModeSickleSpread case SpreadModeFlowerSpread` - radius: spread Radius - direction: `case SpreadDirectionTop case SpreadDirectionBottom case SpreadDirectionLeft case SpreadDirectionRight case SpreadDirectionLeftUp case SpreadDirectionLeftDown case SpreadDirectionRightUp case SpreadDirectionRightDown` - touchBorderMargin: margin border in SpreadPositionModeTouchBorder - buttonWillSpreadBlock - buttonDidSpreadBlock - buttonWillCloseBlock - buttonDidCloseBlock
**private static:** ---you can edit the default in the source--- - private static let sickleSpreadAngleDefault: CGFloat = 90.0 - private static let flowerSpreadAngleDefault: CGFloat = 120.0 - private static let spredaDirectionDefault: SpreadDirection = .SpreadDirectionTop - private static let spreadRadiusDefault: CGFloat = 100.0 - private static let coverAlphaDefault: CGFloat = 0.1 - private static let touchBorderMarginDefault: CGFloat = 10.0 - private static let touchBorderAnimationDuringDefault = 0.5 - private static let animationDuringDefault = 0.2

##Usage 以swift为例子：
1.通过SpreadButton的构造方法来创建一个SpreadButton对象，传入主体按钮的背景图片，高亮图片(非必须)，还有位置，如果传入的UIImage为nil，放心，编译时就会报错

let spreadButton = SpreadButton(image: UIImage(named: "powerButton"),
                       highlightImage: UIImage(named: "powerButton_highlight"),
                             position: CGPointMake(40, UIScreen.mainScreen().bounds.height - 40))

2.创建子按钮(SpreadSubButton)，传入背景图片，高亮图片(非必须)，还有一个尾随闭包，子按钮被点击后我们这个闭包会被调用，同样的，如果传入的UIImage为nil，编译时会报错

let btn1 = SpreadSubButton(backgroundImage: UIImage(named: "clock"), 
                            highlightImage: UIImage(named: "clock_highlight")) { (index, sender) -> Void in
     print("first button be clicked!!!")
}

let btn2 = SpreadSubButton(backgroundImage: UIImage(named: "pencil"), 
                            highlightImage: UIImage(named: "pencil_highlight")) { (index, sender) -> Void in
     print("second button be clicked!!!")
}
//像这样你可以创建更多

3.通过-setSubButtons为SpreadButton设置子按钮，这里你可以传入nil或者SpreadButton?试试，没关系，里面做了保险，会排除，哈哈扯远了，用到的知识可以看看我的这篇文章

spreadButton?.setSubButtons([btn1, btn2, btn3, btn4, btn5])

4.根据你的需求，去定制这个SpreadButton，具体可以选什么参数，看看上面的Custom-made

spreadButton?.mode = SpreadMode.SpreadModeSickleSpread
spreadButton?.direction = SpreadDirection.SpreadDirectionRightUp
spreadButton?.positionMode = SpreadPositionMode.SpreadPositionModeFixed

/*  and you can assign a newValue to change the default
spreadButton?.animationDuring = 0.2
spreadButton?.animationDuringClose = 0.25
spreadButton?.radius = 180
spreadButton?.coverAlpha = 0.3
spreadButton?.coverColor = UIColor.yellowColor()  
spreadButton?.touchBorderMargin = 10.0
*/

5.每种动作的前后，都有对应的Block供使用，像这样给他们赋值:

spreadButton?.buttonWillSpreadBlock = { print(CGRectGetMaxY($0.frame)) }
spreadButton?.buttonDidSpreadBlock = { _ in print("did spread") }
spreadButton?.buttonWillCloseBlock = { _ in print("will closed") }
spreadButton?.buttonDidCloseBlock = { _ in print("did closed") }

6.最后加到你的view里面，ok，可以开始玩耍

if spreadButton != nil {
    self.view.addSubview(spreadButton!)
}

##Relation
@liuzhiyi1992 on Github
SpreadButton in my Blog


##License SpreadButton is released under the MIT license. See LICENSE for details.