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annotate Sources/StockCharts/LineChart/Helpers/ChartLabel.swift @ 74:cda2b6a398a7

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Fixing: Modifying state during view update
author Dennis Concepción Martín <66180929+denniscm190@users.noreply.github.com>
date Sat, 08 May 2021 19:10:58 +0200
parents 127af64e264e
children ff09f5279e06
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1 //
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2 // ChartLabel.swift
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3 // StockCharts
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4 //
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5 // Created by Dennis Concepción Martín on 30/4/21.
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6 //
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7
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8 import SwiftUI
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10 public struct ChartLabel: View {
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11 public var data: [Double]
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12 public var dates: [String]?
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13 public var hours: [String]?
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15 @Binding var indexPosition: Int // Data point position
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17 public var body: some View {
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18 HStack {
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19 Group {
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20 if let dates = self.dates {
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21 let date = formatStringDate(dates[indexPosition])
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22 Text(date)
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23 }
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24 if let hours = self.hours {
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25 let hour = hours[indexPosition]
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26 Text(hour)
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27 }
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28 Text("\(data[indexPosition], specifier: "%.2f")")
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29 .foregroundColor(Color(.systemBlue))
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30 }
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31 .font(.headline)
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32 }
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33 }
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34
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35 /*
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36 Take string in format yy-MM-dd (2021-01-01) and transform it
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37 to long default string format
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38 */
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39 public func formatStringDate(_ stringDate: String) -> String {
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40 let dateFormatter = DateFormatter()
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41 dateFormatter.dateFormat = "yy-MM-dd"
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42 let date = dateFormatter.date(from: stringDate)
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43
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44 // Format date to the final format
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45 dateFormatter.dateStyle = .long
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46 let finalDate = dateFormatter.string(from: date!)
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47
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48 return finalDate
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49 }
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50 }