ihealth_ios/Inhealth/IHHistoryBarChartView.swift

//
//  IHHistoryBarChartView.swift
//  Inhealth
//
//  Created by weclouds on 2020/2/19.
//  Copyright © 2020 weclouds. All rights reserved.
//

import UIKit
import Charts

class IHHistoryBarChartView: UIView {
    weak var delegate :IHLineChartViewDelegate?
    var data:[String]? {
        didSet{
            if let data = self.data {
                var yData = [Double]()
                for str in data {
                    let a = String(format: "%.1f", Double(str)!)
                    let y = Double(a)
                    yData.append(y!)
                }
                self.yData = yData
                 self.setDataCount()
            }
        }
    }
    var yData :[Double]?

    var xVals:[String]? = [String]()
    var avarageValue:String?{
        didSet{
            if let avarage = self.avarageValue {
                limitline.label = avarage
                limitline.limit = Double(avarage)!
            }
        }
    }
    
    var unit:String?{
        didSet{
            if let unit = self.unit {
                unitLabel.text = unit
            }
        }
    }
    lazy var unitLabel: UILabel = {
          let unitLabel = UILabel(frame: CGRect(x: 10, y: 0, width: 100, height: 15))
          unitLabel.text = "kWh"
        unitLabel.textColor = UIColor(hexString: "#A3AFBB")
        unitLabel.font = UIFont(name: Alibaba_PuHuiTi_Regular, size: 11)
        return unitLabel
    }()
    //限制线
    lazy var limitline: ChartLimitLine = {
        let limitline = ChartLimitLine(limit: 80, label: "80")
        limitline.lineWidth = 1.5
//        limitline.lineColor = UIColor(hexString: "#05CFAB")
        limitline.lineColor = UIColor.init(red: 198/255.0, green: 196/255.0, blue: 214/255.0, alpha: 1.0)
        limitline.lineDashLengths = [4,2]
        limitline.labelPosition = .topRight
//        limitline.valueTextColor = UIColor(hexString: "#05CFAB")
        limitline.valueTextColor = UIColor.init(red: 198/255.0, green: 196/255.0, blue: 214/255.0, alpha: 1.0)
        limitline.valueFont = UIFont(name: Alibaba_PuHuiTi_Regular, size: 11)!
        return limitline
    }()
    lazy var chartView: BarChartView = {
        let chartView =  BarChartView()
        return chartView
    }()
    override init(frame: CGRect) {
        super.init(frame: frame)
        configChartView()
    }
    
    
    required init?(coder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    
    func setBarChartData(_ report:ReportData?){
            if report?.dataList == nil || report?.dataList?.count == 0  {
                return
            }
            //生成10条随机数据
                   var dataEntries = [BarChartDataEntry]()
            
                   for i in 0..<31 {
                       let y = arc4random() % 100
                       let entry = BarChartDataEntry(x: Double(i), y: Double(y))
                       dataEntries.append(entry)
                   }
                   //这10条数据作为柱状图的所有数据
                   let chartDataSet = BarChartDataSet(entries: dataEntries, label: "")
                   chartDataSet.barShadowColor = UIColor(hexString: "#EBF2ED")!
                   chartDataSet.drawValuesEnabled = false
                    // #05CFAB
                   chartDataSet.colors = [UIColor(hexString: "#573F95")!]
                    // #05CFAB
                   chartDataSet.highlightColor = UIColor(hexString: "#573F95")!//高梁颜色
                   //目前只有一组柱状图
                   let chartData = BarChartData(dataSets: [chartDataSet])
                   //设置柱子宽度
                   chartData.barWidth = 0.2
                    //设置柱状图数据
                   chartView.data = chartData

     
        }
        
    
    
     func configChartView()  {
             addSubview(chartView)
        
         chartView.addSubview(unitLabel)
         chartView.barCornerRadius = 0 //自定义属性 这里需要事先设置 ，不然无法渲染
         
          // chartView.animate(yAxisDuration: 2)
            //设置间隙
         chartView.setExtraOffsets(left: 0 , top: 0, right: 0, bottom: 0)
            //代理方法
         chartView.delegate = self
            //chartView.drawBarShadowEnabled = true
         chartView.chartDescription?.enabled = false
         chartView.scaleYEnabled = false
          //  chartView.scaleXEnabled = false
         chartView.doubleTapToZoomEnabled = false
           // chartView.dragEnabled = false
           // chartView.setScaleEnabled(false)
         chartView.pinchZoomEnabled = false
            //s只滑动不滚动(系统gneiss默认先缩放后滑动)以及初始化时x轴就缩放1.5倍，就可以滑动了
            let scaleX = chartView.viewPortHandler
            scaleX?.setMinimumScaleX(1.5)
            chartView.xAxis.drawGridLinesEnabled = false

            
            chartView.rightAxis.enabled = false
            chartView.legend.enabled = false //不需要显示图例
            
            chartView.drawBordersEnabled = false
            
         //   删除x轴线和y轴：
            chartView.xAxis.drawAxisLineEnabled = false
            chartView.leftAxis.drawAxisLineEnabled = false
            //bottom Axis 横坐标
            let xAxis = chartView.xAxis
            xAxis.labelPosition = .bottom //位置
            xAxis.labelCount = 4
            xAxis.labelFont = UIFont(name: Alibaba_PuHuiTi_Regular, size: 11)!
            xAxis.labelTextColor = UIColor(hexString: "#949DB0")
    
            //xAxis.valueFormatter = DayAxisValueFormatter(chart: chartView)

            
        //左边轴 y轴
            let leftAxis = chartView.leftAxis
            leftAxis.enabled = true  //绘制右边轴
            leftAxis.valueFormatter = LargeValueFormatter()
            leftAxis.labelTextColor = UIColor(hexString: "#A3AFBB")
            leftAxis.labelFont = UIFont(name: Alibaba_PuHuiTi_Regular, size: 11)!
            //leftAxis.axisLineColor = .red
            leftAxis.axisMinimum = 0 //最小值从0开始
            leftAxis.spaceTop = 0.4
            leftAxis.labelCount = 5
           //设置网格线
           // chartView.
            leftAxis.drawGridLinesEnabled = true //不绘制网格线（X轴就绘制竖线，Y轴绘制横线）
            leftAxis.gridColor = UIColor(hexString: "#C6CDD5")
            leftAxis.gridLineWidth = 0.5 //x轴对应网格线的大小
            leftAxis.gridLineDashLengths = [4,2]  //虚线各段长度
        
        //添加限制线
        leftAxis.addLimitLine(limitline)//添加到U轴上
        
        
        }
   
    override func layoutSubviews() {
        super.layoutSubviews()
        chartView.frame = self.bounds
    }
    
    func setDataCount()  {
        var dataEntries = [BarChartDataEntry]()
        for i in 0..<(yData?.count)! {

        let yval = yData![i]
               let entry = BarChartDataEntry(x: Double(i), y: yval)
               dataEntries.append(entry)
           }
           //这10条数据作为柱状图的所有数据
           let chartDataSet = BarChartDataSet(entries: dataEntries, label: "")
          chartDataSet.barShadowColor = UIColor.white
          chartDataSet.drawValuesEnabled = false
        // #05CFAB
           chartDataSet.colors = [UIColor(hexString: "#573F95" ,transparency: 0.8)!]
        // #05CFAB
           chartDataSet.highlightColor = UIColor(hexString: "#573F95",transparency: 0.8)!//高梁颜色
           //目前只有一组柱状图
           let chartData = BarChartData(dataSets: [chartDataSet])
           chartView.animate(yAxisDuration: 2)
        chartView.xAxis.valueFormatter = IndexAxisValueFormatter(values: xVals!)
        //设置柱状图数据
        chartView.data = chartData
       
        chartView.animate(yAxisDuration: 2)
        let marker = XYMarkerView(color: UIColor(hexString: "#573F95")!, font: .systemFont(ofSize: 12), textColor: .white, insets: UIEdgeInsets(top: 5, left: 5, bottom: 5, right: 5), xAxisValueFormatter: IndexAxisValueFormatter(values: xVals!))
        marker.chartView = chartView
        marker.minimumSize = CGSize(width: 80, height: 20)

        marker.isBarchart = true
        marker.chartView = chartView
        chartView.marker = marker
    }
}

extension IHHistoryBarChartView :ChartViewDelegate{
    func chartValueSelected(_ chartView: ChartViewBase, entry: ChartDataEntry, highlight: Highlight) {
       let marker = chartView.marker as! XYMarkerView
       marker.isSeleted = true
              var chartDataSet = BarChartDataSet()
        //LineChartDataSet
              chartDataSet = (chartView.data?.dataSets[0] as? BarChartDataSet)!
              let values = chartDataSet.entries
        
              let index = values.index(where: {$0.x == highlight.x})  //获取索引
              if let delegate = self.delegate {
                  delegate.lineChartDidSelected(index ?? 0)
              }
    }
    func chartValueNothingSelected(_ chartView: ChartViewBase) {
        let marker = chartView.marker as! XYMarkerView
        marker.isSeleted = false
        if let delegate = self.delegate {
            delegate.lineChartDeselected()
        }
           
    }
}