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integrate candle chart in quote table app
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Samples/DXFeedCandleChartMac/Assets.xcassets/AppIcon.appiconset/1024-mac.png
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
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@@ -86,7 +86,6 @@ struct StockPrice: Identifiable { | |
| self.high = Decimal(candle.high) | ||
| self.low = Decimal(candle.low) | ||
| } | ||
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| } | ||
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@@ -128,32 +127,39 @@ class CandleList: ObservableObject, SnapshotDelegate { | |
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| @Published var candles: [StockPrice] | ||
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| init(symbol: String) { | ||
| init(symbol: String, endpoint: DXEndpoint?) { | ||
| self.symbol = symbol | ||
| self.candles = [StockPrice]() | ||
| try? createSubscription() | ||
| try? createSubscription(endpoint: endpoint) | ||
| fetchInfo() | ||
| } | ||
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| func createSubscription() throws { | ||
| endpoint = try DXEndpoint.create().connect("demo.dxfeed.com:7300") | ||
| feed = endpoint.getFeed() | ||
| func createSubscription(endpoint: DXEndpoint?) throws { | ||
| if let endpoint = endpoint { | ||
| self.endpoint = endpoint | ||
| } else { | ||
| self.endpoint = try DXEndpoint.create().connect("demo.dxfeed.com:7300") | ||
| } | ||
| feed = self.endpoint.getFeed() | ||
| subscription = try feed?.createSubscription([Candle.self]) | ||
| snapshotProcessor = SnapshotProcessor() | ||
| snapshotProcessor.add(self) | ||
| try subscription?.add(listener: snapshotProcessor) | ||
| } | ||
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| func fetchInfo() { | ||
| let reader = DXInstrumentProfileReader() | ||
| let result = try? reader.readFromFile(address: "https://demo:[email protected]/ipf?SYMBOL=\(symbol)") | ||
| guard let result = result else { | ||
| return | ||
| } | ||
| result.forEach { profile in | ||
| currency = profile.currency | ||
| descriptionString = profile.descriptionStr | ||
| DispatchQueue.global(qos: .background).async { | ||
| let reader = DXInstrumentProfileReader() | ||
| let result = try? reader.readFromFile(address: "https://demo:[email protected]/ipf?SYMBOL=\(self.symbol)") | ||
| guard let result = result else { | ||
| return | ||
| } | ||
| result.forEach { profile in | ||
| self.currency = profile.currency | ||
| self.descriptionString = profile.descriptionStr | ||
| } | ||
| } | ||
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| } | ||
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| func updateDate(date: Date, type: CandleType) { | ||
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@@ -187,14 +193,13 @@ struct CandleStickChart: View { | |
| let dateFormatter: DateFormatter | ||
| let symbol: String | ||
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| init(symbol: String, type: CandleType = .month, date: Date? = nil) { | ||
| init(symbol: String, type: CandleType = .month, date: Date? = nil, endpoint: DXEndpoint?) { | ||
| dateFormatter = DateFormatter() | ||
| dateFormatter.dateStyle = DateFormatter.Style.short | ||
| dateFormatter.timeStyle = DateFormatter.Style.none | ||
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| self.symbol = symbol | ||
| self.list = CandleList(symbol: symbol) | ||
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| self.list = CandleList(symbol: symbol, endpoint: endpoint) | ||
| _type = State(initialValue: type) | ||
| if let date = date { | ||
| _date = State(initialValue: date) | ||
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@@ -210,38 +215,38 @@ struct CandleStickChart: View { | |
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| Section { | ||
| chart.frame(height: max(reader.size.height/2, 300)) | ||
| }.listRowBackground(Color.cellBackground) | ||
| }.listRowBackground(Color.sectionBackground) | ||
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| Section("Chart parameters") { | ||
| Picker("Candle type", selection: $type) { | ||
| ForEach(CandleType.allCases, id: \.self) { category in | ||
| Text(String(describing: category).capitalized).tag(category) | ||
| } | ||
| }.onChange(of: type) { _, newValue in | ||
| }.onChange(of: type) { value in | ||
| selectedPrice = nil | ||
| list.updateDate(date: date, type: newValue) | ||
| }.pickerStyle(SegmentedPickerStyle()) | ||
| list.updateDate(date: date, type: value) | ||
| } | ||
| .pickerStyle(SegmentedPickerStyle()) | ||
| .foregroundStyle(Color.labelText) | ||
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| .foregroundStyle(.text) | ||
| DatePicker( | ||
| selection: $date, | ||
| displayedComponents: [.date] | ||
| ) { | ||
| Text("Choose from time") | ||
| }.onChange(of: date) { _, newValue in | ||
| }.onChange(of: date) { value in | ||
| selectedPrice = nil | ||
| xAxisValues = CandleStickChart.calculateXaxisValues(firstValue: newValue) | ||
| list.updateDate(date: newValue, type: type) | ||
| xAxisValues = CandleStickChart.calculateXaxisValues(firstValue: value) | ||
| list.updateDate(date: value, type: type) | ||
| } | ||
| .datePickerStyle(.compact) | ||
| .foregroundStyle(.text) | ||
| .foregroundStyle(Color.labelText) | ||
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| } | ||
| .listRowBackground(Color.cellBackground) | ||
| .listRowSeparator(.hidden) | ||
| }.listRowSeparator(.hidden) | ||
| .listRowBackground(Color.sectionBackground) | ||
| } | ||
| .preferredColorScheme(.dark) | ||
| .background(.tableBackground) | ||
| .background(Color.viewBackground) | ||
| .scrollContentBackground(.hidden) | ||
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| } | ||
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@@ -322,7 +327,7 @@ struct CandleStickChart: View { | |
| .frame(width: boxWidth, alignment: .leading) | ||
| .background { | ||
| RoundedRectangle(cornerRadius: 13) | ||
| .fill(Color.priceBackground) | ||
| .fill(Color.infoBackground) | ||
| .foregroundStyle(.thickMaterial) | ||
| .padding(.horizontal, -8) | ||
| .padding(.vertical, -4) | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,24 @@ | ||
| // | ||
| // | ||
| // Copyright (C) 2024 Devexperts LLC. All rights reserved. | ||
| // This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0. | ||
| // If a copy of the MPL was not distributed with this file, You can obtain one at http://mozilla.org/MPL/2.0/. | ||
| // | ||
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| import SwiftUI | ||
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| #if os(macOS) | ||
| extension Color { | ||
| static let viewBackground = Color.tableBackground | ||
| static let sectionBackground = Color.cellBackground | ||
| static let infoBackground = Color.priceBackground | ||
| static let labelText = Color.text | ||
| } | ||
| #elseif os(iOS) | ||
| extension Color { | ||
| static let viewBackground = Color(UIColor.tableBackground) | ||
| static let sectionBackground = Color(UIColor.cellBackground) | ||
| static let infoBackground = Color(UIColor.priceBackground) | ||
| static let labelText = Color(UIColor.text) | ||
| } | ||
| #endif |
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