ihealth_ios/Inhealth/IHBatteryView.swift

//
//  IHBatteryView.swift
//  Inhealth
//
//  Created by weclouds on 2020/1/10.
//  Copyright © 2020 weclouds. All rights reserved.
//

import UIKit

class IHBatteryView: UIView {

    //0~ 100
    var batteryValue : Int?{
        didSet{
            setBatteryValue(self.batteryValue ?? 0)
        }
    }
   //电池宽度
   private var b_width :CGFloat?
    //电池高度
    private var b_height :CGFloat?
    //电池高度
    private var b_lineW :CGFloat?
    
    private  var batteryView : UIView?
    
    private var layerRight = CAShapeLayer()
    private var batteryLayer = CAShapeLayer()
    override init(frame: CGRect) {
        super.init(frame: frame)
        drawBattery()
    }
    
    required init?(coder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
//    override func awakeFromNib() {
//        super.awakeFromNib()
//        drawBattery()
//    }
    
    func drawBattery()  {
        let b_x : CGFloat = 1.59
        let b_y : CGFloat = 1.59
        b_height = self.bounds.size.height - 2
        b_width = self.bounds.size.width - 5
        b_lineW = 1.59
        
        //画电池（电池左边）
        let pathLeft = UIBezierPath(roundedRect: CGRect(x: b_x, y: b_y, width: b_width!, height: b_height!), cornerRadius: 2)
        
        batteryLayer.lineWidth = b_lineW!
        batteryLayer.strokeColor = UIColor(hexString: "#05CFAB")?.cgColor
        batteryLayer.fillColor = UIColor.clear.cgColor
        batteryLayer.path = pathLeft.cgPath
        self.layer.addSublayer(batteryLayer)
        
        //画电池（右边电池箭头）
        let pathRight = UIBezierPath()
        pathRight.move(to: CGPoint(x: b_x + b_width! + 1, y: b_y + b_height! / 3))
        pathRight.addLine(to: CGPoint(x: b_x + b_width! + 1, y: b_y + b_height! * 2 / 3))

        layerRight.lineWidth = 2
        layerRight.strokeColor = UIColor(hexString: "#05CFAB")?.cgColor
        layerRight.fillColor = UIColor.clear.cgColor
        layerRight.path = pathRight.cgPath
        self.layer.addSublayer(layerRight)
        
        //电池内部填充
        batteryView = UIView(frame: CGRect(x: b_x + 1.59, y: b_y + b_lineW!, width: 0, height: b_height! - b_lineW! * 2))
        //batteryView?.layer.cornerRadius = 1
        batteryView?.backgroundColor = UIColor(hexString: "#05CFAB")
        addSubview(batteryView!)
        
    }
    
    func setBatteryValue(_ value: Int)  {
        if value < 10{
            batteryLayer.strokeColor = UIColor(hexString: "#FF0C4D")?.cgColor
            batteryView?.backgroundColor = UIColor(hexString: "#FF0C4D")
            layerRight.strokeColor = UIColor(hexString: "#FF0C4D")?.cgColor
        }else{
            batteryLayer.strokeColor = UIColor(hexString: "#05CFAB")?.cgColor
            batteryView?.backgroundColor = UIColor(hexString: "#05CFAB")
            layerRight.strokeColor = UIColor(hexString: "#05CFAB")?.cgColor
        }
        var rect = batteryView?.frame
        rect?.size.width = (CGFloat(value) * ( b_width! - b_lineW! * 2 ) ) / 100
        batteryView!.frame = rect!
    }
}