ihealth_ios/Inhealth/IHLightColorView.swift

//
//  IHLightColorView.swift
//  Inhealth
//
//  Created by weclouds on 2020/8/21.
//  Copyright © 2020 weclouds. All rights reserved.
//

import UIKit

class IHLightColorView: UIView {
    //调色结果
    var paletteComplition:((ColorStruct)->Void)?
   fileprivate var gradientLayer :IHGradientLayer?
   @IBOutlet weak var brightnessBtn: UIButton!
   @IBOutlet weak var colorValueBtn: UIButton!
   @IBOutlet weak var touchView: UIImageView!
   @IBOutlet weak var brightThumb: UIImageView!
   @IBOutlet weak var colorThumb: UIImageView!
   @IBOutlet weak var brightnessPickerView: UIView!
    

   @IBOutlet weak var colorPickerView: IHColorPickerView!
   
   
   @IBOutlet weak var lampInfoBox: UIView!
    var isVerticalMove :Bool! = false // 纵轴移动
        {
        didSet{
            if self.isVerticalMove == true  {
                self.colorPickerView.isHidden = true
                self.colorThumb.isHidden = true
                self.brightnessPickerView.isHidden = false
                self.brightThumb.isHidden = false
            }else {
                self.colorPickerView.isHidden = true
                self.colorThumb.isHidden = true
                self.brightnessPickerView.isHidden = true
                self.brightThumb.isHidden = true
            }
        }
    }
    var isHorizontalMove :Bool! = false //横轴移动
        {
        didSet{
            if self.isHorizontalMove == true  {
                self.colorPickerView.isHidden = false
                self.colorThumb.isHidden = false
                self.brightnessPickerView.isHidden = true
                self.brightThumb.isHidden = true
            }else {
                self.colorPickerView.isHidden = true
                self.colorThumb.isHidden = true
                self.brightnessPickerView.isHidden = true
                self.brightThumb.isHidden = true
            }
        }
    }
    var isLock:Bool? = false //加一把锁 保证单独执行
    let horizontalSensitivity : CGFloat = 30 //水平灵敏度
    let sensitivity : CGFloat = 50 //灵敏度  移动的又有效距离 / sensitivity
    let beginY :CGFloat? = (KSCREENHEIGHT - 400 ) / 2
    let endY :CGFloat? = (KSCREENHEIGHT - 400 ) / 2 + 400
    let colorPickerWidth = KSCREENWIDTH - 80
    var beginPoint : CGPoint?
    var movePoint : CGPoint?
    var isMove:Bool! = false
    var finalColor:ColorStruct?
    var currentColor:ColorStruct?{
        didSet{
            if let color = self.currentColor {
                let curColor = UIColor(red: color.Red!, green: color.Green!, blue: color.Blue!)
                _fill(curColor!) //填充当前颜色
                 colorValueBtn.setTitle("R:\(color.Red!)  G:\(color.Green!)  B:\(color.Blue!)", for: .normal)
               // self.finalColor = color //赋初值 ，如果没有处理，最后就是这个值
            }
        }
    }
    var colors :[CGColor]? = [CGColor](){
        didSet{
            // self.setNeedsDisplay()
            if let colors = self.colors {
                drawColor(colors)
            }
            
        }
    }
    var hvalue:CGFloat? = 0{
        didSet{
            if let hvalue = self.hvalue {
                let color = UIColor(hue: hvalue, saturation: 1, brightness: self.brightness ?? 1, alpha: 1)
                setViewColor(color)
                currentColor(color)
            }
            
        }
    }
    //颜色亮度
    var brightness :CGFloat?
    var bright : CGFloat?{
        didSet{
            if let bright = self.bright {
                self.brightThumb.center.y = (bright )
                let result = (400 - (bright - beginY!) ) / 400  * 100
                self.brightnessBtn.setTitle("\(Int(result))%", for: .normal)
                self.brightness = result / 100
                setColorBrightness(result / 100)
            
            }
            
        }

    }
    
    var color : CGFloat?{
        didSet{
            if let color = self.color {
                self.colorThumb.center.x = color
                
                self.hvalue = (color - 40) / colorPickerWidth
            }
        }
    }
    override func awakeFromNib() {
        super.awakeFromNib()
    
        _fill(UIColor.red)//默认
        gradientLayer = IHGradientLayer()
        gradientLayer?.frame = self.bounds
        self.layer.insertSublayer(gradientLayer!, at: 0)

    }

    func setupUI()  {
        brightnessBtn.layoutButton(style: .Left, imageTitleSpace: 10)
        colorValueBtn.layoutButton(style: .Left
            , imageTitleSpace: 10)
    }
    override func draw(_ rect: CGRect) {
        // colors = [UIColor.white.cgColor,UIColor.blue.cgColor]
//        if self.colors?.count == 2 {
//            drawColor(self.colors!)
//        }else{
//            let firstColor = UIColor(red: 1, green: 0, blue: 0, alpha: 0.12)
//            let secondColor = UIColor(red: 1, green: 0, blue: 0, alpha: 1)
//            drawColor([firstColor.cgColor,secondColor.cgColor])
//        }

      }
  
    override func layoutSubviews() {
        super.layoutSubviews()

    }
    

}

extension IHLightColorView{
    override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
 
        let touch : UITouch! = touches.first
        self.beginPoint = touch.location(in: self)
        self.touchView.isHidden = false
        self.touchView.center = self.beginPoint!
        
        
    }
    override func touchesCancelled(_ touches: Set<UITouch>, with event: UIEvent?) {
        
        UIView.animate(withDuration: 2) {
            self.reset()
        }
    }
    
    override func touchesEnded(_ touches: Set<UITouch>, with event: UIEvent?) {
        UIView.animate(withDuration: 2) {
            self.reset()
        }

    }
   

    override func touchesMoved(_ touches: Set<UITouch>, with event: UIEvent?) {
        //显示控件
        self.touchView.isHidden = false
        self.lampInfoBox.isHidden =  false
        
        let touch : UITouch! = touches.first
        self.movePoint = touch.location(in: self)
        let previousPoint =  touch.previousLocation(in: self)
        let directX = movePoint!.x - previousPoint.x
        let directY = movePoint!.y - previousPoint.y
        self.touchView.center = self.movePoint!
        let height = movePoint!.y - beginPoint!.y
        let width = beginPoint!.x - movePoint!.x
        let rads = atan(height/width);
        let degrees = 180.0 * Double(rads) / .pi
        let deltaDegrees = abs(degrees) //角度的d绝对值 小与45度的时候 判定为 横向滑动 ；大于或者等于45度判定为纵向滑动
       // log.debug(deltaDegrees)
        if deltaDegrees.isNaN == false  { //排除度数为0的情况
            if deltaDegrees < 45  {
                if isLock == false   { //如果是开锁 则可以进来判断是否可以移动 ，
                    isLock = true //进来之后就上锁
                    isHorizontalMove = true
                    isVerticalMove = false
                }

            }else{
                if isLock == false  {
                    isLock = true
                    isHorizontalMove = false
                    isVerticalMove = true
                }

            }
        }else{
            //起始点跟移动的点在同一点的时候， 就会产生nan
            //log.debug("movePoint  =  \(movePoint) - beginPoint = \(beginPoint)")
        }

        
        if isHorizontalMove == true{ // 水平滑动
           // log.debug(changeX)
            isMove = true
            self.colorPickerView.isHidden =  false
            self.brightnessPickerView.isHidden = true
            self.colorThumb.isHidden = false
            self.brightThumb.isHidden = true

            color! += (directX )
            if color! > (self.colorPickerView.frame.maxX)  {
                color = 40
            }
            if color! < 40 {
              color = self.colorPickerView.frame.maxX
            }
        }
        if  isVerticalMove == true   { //垂直移动
         
            isMove = true
            self.brightThumb.isHidden = false
            self.colorPickerView.isHidden =  true
            self.brightnessPickerView.isHidden = false
            self.colorThumb.isHidden = true
                bright! += (directY ) //弹性系数
                if bright! < beginY! {
                    bright = beginY
                }
                if bright! > endY!{
                      bright = endY
                  }
        }

    }
    
}
extension IHLightColorView{
      fileprivate  func setViewColor(_ color :UIColor)  {

            self.colors = [getAlphaColor(color).cgColor,color.cgColor]
        }
      fileprivate func setColorBrightness(_ brightness:CGFloat){
            if let hvalue = self.hvalue {
                let color = UIColor(hue: hvalue, saturation: 1, brightness: brightness, alpha: 1)
                self.colors = [getAlphaColor(color).cgColor,color.cgColor]
                currentColor(color)
            }

        }
    
     fileprivate func drawColor(_ colors:[CGColor])  {
        
                if self.colors?.count == 2 {
                    self.gradientLayer?.colors = colors
                }else{
                    let firstColor = UIColor(red: 1, green: 0, blue: 0, alpha: 0.12).cgColor
                    let secondColor = UIColor(red: 1, green: 0, blue: 0, alpha: 1).cgColor
                     self.gradientLayer?.colors = [firstColor,secondColor]
                }
       
//          let endRadius = sqrt(pow(frame.width/2, 2) + pow(frame.height/2, 2))
//          let center = CGPoint(x: bounds.size.width / 2, y: bounds.size.height / 2)
//          let gradient = CGGradient(colorsSpace: nil, colors: colors as CFArray, locations: nil)
//          let context = UIGraphicsGetCurrentContext()
//          context?.drawRadialGradient(gradient!, startCenter: center, startRadius: 0.0, endCenter: center, endRadius: endRadius, options: CGGradientDrawingOptions.drawsBeforeStartLocation)

      }
    fileprivate  func currentColor(_ color :UIColor )   {
          let coms = color.cgColor.components
          var r ,g,b : Int
          //考虑灰度情况
          if coms?.count == 2 {
              r = Int((coms?.first)! * CGFloat(255))
              g = Int((coms?.first)! * CGFloat(255))
              b = Int((coms?.first)! * CGFloat(255))
          }else{
              r = Int((coms?[0])! * CGFloat(255))
              g = Int((coms?[1])! * CGFloat(255))
              b = Int((coms?[2])! * CGFloat(255))
          }
          colorValueBtn.setTitle("R:\(r)  G:\(g)  B:\(b)", for: .normal)
          self.finalColor = ColorStruct(Red: r, Green: g, Blue: b)
      }
    
   fileprivate func getAlphaColor(_ color:UIColor) -> UIColor {
        let coms = color.cgColor.components
        var r ,g,b : CGFloat
        //考虑灰度情况
        if coms?.count == 2 {
            r = CGFloat((coms?.first)! * CGFloat(255))
            g = CGFloat((coms?.first)! * CGFloat(255))
            b = CGFloat((coms?.first)! * CGFloat(255))
        }else{
            r = CGFloat((coms?[0])! * CGFloat(255))
            g = CGFloat((coms?[1])! * CGFloat(255))
            b = CGFloat((coms?[2])! * CGFloat(255))
        }
        
        return UIColor(red: r, green: g, blue: b, alpha: 0.12)
    }
   fileprivate func reset()  {//开始移动 - 判断是横滑还是竖滑
        isLock = false // 解锁
        self.isHorizontalMove = false
        self.isVerticalMove = false
        self.colorPickerView.isHidden =  true
        self.brightnessPickerView.isHidden = true
        self.touchView.isHidden = true
        self.lampInfoBox.isHidden =  true
        self.brightThumb.isHidden = true
        self.colorThumb.isHidden = true
        Intermediate.isRegulateColor = "1"
        if isMove == true{
        // 255 0 249
        if let finalColor = self.finalColor {

            if let block = self.paletteComplition {
               block(finalColor)
            }
        }
        isMove = false
        }

    }
    
        //填充颜色
        fileprivate func _fill(_ aColor :UIColor){
           // log.debug("color - \(color)")
            var  r : Float  = 0
            var  g : Float  = 0
            var  b : Float  = 0
            var  a : Float  = 0
            var  h : Float  = 0
            var  s : Float  = 0
            var  v : Float  = 0
            let comp = aColor.cgColor.components
            r = Float(comp![0])
            g = Float(comp![1])
            b = Float(comp![2])
            a = Float(comp![3])
            RGBToHSV(r, g, b, &h, &s, &v, true) //调用c方法 自动转换

            self.hvalue = CGFloat(h)
            self.color = colorPickerWidth * (self.hvalue ?? 0) + 40
            let bri = CGFloat(v)
             let centerY = endY! -  400 * bri
            self.brightThumb.center.y = centerY
            self.brightnessBtn.setTitle("\(Int(bri * 100))%", for: .normal)
            self.bright = centerY
            setColorBrightness(bri)
        }
}