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// |
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// MeasurementChartView.swift |
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// USB Meter |
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// |
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// Created by Bogdan Timofte on 06/05/2020. |
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// Copyright © 2020 Bogdan Timofte. All rights reserved. |
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// |
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import SwiftUI |
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struct MeasurementChartView: View {
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private enum SeriesKind {
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case power |
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case voltage |
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case current |
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var unit: String {
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switch self {
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case .power: return "W" |
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case .voltage: return "V" |
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case .current: return "A" |
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} |
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} |
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var tint: Color {
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switch self {
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case .power: return .red |
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case .voltage: return .green |
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case .current: return .blue |
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} |
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} |
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} |
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private struct SeriesData {
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let kind: SeriesKind |
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let points: [Measurements.Measurement.Point] |
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let samplePoints: [Measurements.Measurement.Point] |
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let context: ChartContext |
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let autoLowerBound: Double |
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let autoUpperBound: Double |
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let maximumSampleValue: Double? |
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} |
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private let minimumTimeSpan: TimeInterval = 1 |
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private let minimumVoltageSpan = 0.5 |
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private let minimumCurrentSpan = 0.5 |
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private let minimumPowerSpan = 0.5 |
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private let defaultEmptyChartTimeSpan: TimeInterval = 60 |
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let compactLayout: Bool |
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let availableSize: CGSize |
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@EnvironmentObject private var measurements: Measurements |
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@Environment(\.horizontalSizeClass) private var horizontalSizeClass |
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@Environment(\.verticalSizeClass) private var verticalSizeClass |
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var timeRange: ClosedRange<Date>? = nil |
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@State var displayVoltage: Bool = false |
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@State var displayCurrent: Bool = false |
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@State var displayPower: Bool = true |
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@State private var showResetConfirmation: Bool = false |
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@State private var chartNow: Date = Date() |
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@State private var pinOrigin: Bool = false |
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@State private var useSharedOrigin: Bool = false |
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@State private var sharedAxisOrigin: Double = 0 |
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@State private var sharedAxisUpperBound: Double = 1 |
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@State private var powerAxisOrigin: Double = 0 |
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@State private var voltageAxisOrigin: Double = 0 |
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@State private var currentAxisOrigin: Double = 0 |
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let xLabels: Int = 4 |
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let yLabels: Int = 4 |
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init( |
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compactLayout: Bool = false, |
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availableSize: CGSize = .zero, |
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timeRange: ClosedRange<Date>? = nil |
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) {
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self.compactLayout = compactLayout |
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self.availableSize = availableSize |
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self.timeRange = timeRange |
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} |
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private var axisColumnWidth: CGFloat {
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if compactLayout {
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return 38 |
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} |
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return isLargeDisplay ? 62 : 46 |
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} |
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private var chartSectionSpacing: CGFloat {
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compactLayout ? 6 : 8 |
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} |
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private var xAxisHeight: CGFloat {
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if compactLayout {
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return 24 |
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} |
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return isLargeDisplay ? 36 : 28 |
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} |
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private var isPortraitLayout: Bool {
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guard availableSize != .zero else { return verticalSizeClass != .compact }
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return availableSize.height >= availableSize.width |
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} |
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private var plotSectionHeight: CGFloat {
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if availableSize == .zero {
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return compactLayout ? 300 : 380 |
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} |
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if isPortraitLayout {
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// Keep the rendered plot area (plot section minus X axis) above half of the display height. |
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let minimumPlotHeight = max(availableSize.height * 0.52, compactLayout ? 250 : 320) |
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return minimumPlotHeight + xAxisHeight |
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} |
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if compactLayout {
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return min(max(availableSize.height * 0.36, 240), 300) |
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} |
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return min(max(availableSize.height * 0.5, 300), 440) |
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} |
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private var stackedToolbarLayout: Bool {
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if availableSize.width > 0 {
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return availableSize.width < 640 |
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} |
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return horizontalSizeClass == .compact && verticalSizeClass != .compact |
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} |
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private var showsLabeledOriginControls: Bool {
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!compactLayout && !stackedToolbarLayout |
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} |
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private var isLargeDisplay: Bool {
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if availableSize.width > 0 {
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return availableSize.width >= 900 || availableSize.height >= 700 |
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} |
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return !compactLayout && horizontalSizeClass == .regular && verticalSizeClass == .regular |
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} |
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private var chartBaseFont: Font {
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isLargeDisplay ? .callout : .footnote |
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} |
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var body: some View {
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let powerSeries = series(for: measurements.power, kind: .power, minimumYSpan: minimumPowerSpan) |
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let voltageSeries = series(for: measurements.voltage, kind: .voltage, minimumYSpan: minimumVoltageSpan) |
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let currentSeries = series(for: measurements.current, kind: .current, minimumYSpan: minimumCurrentSpan) |
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let primarySeries = displayedPrimarySeries( |
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powerSeries: powerSeries, |
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voltageSeries: voltageSeries, |
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currentSeries: currentSeries |
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) |
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Group {
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if let primarySeries {
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VStack(alignment: .leading, spacing: 12) {
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chartToggleBar() |
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GeometryReader { geometry in
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let plotHeight = max(geometry.size.height - xAxisHeight, compactLayout ? 180 : 220) |
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VStack(spacing: 6) {
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HStack(spacing: chartSectionSpacing) {
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primaryAxisView( |
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height: plotHeight, |
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powerSeries: powerSeries, |
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voltageSeries: voltageSeries, |
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currentSeries: currentSeries |
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) |
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.frame(width: axisColumnWidth, height: plotHeight) |
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ZStack {
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RoundedRectangle(cornerRadius: 18, style: .continuous) |
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.fill(Color.primary.opacity(0.05)) |
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RoundedRectangle(cornerRadius: 18, style: .continuous) |
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.stroke(Color.secondary.opacity(0.16), lineWidth: 1) |
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horizontalGuides(context: primarySeries.context) |
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verticalGuides(context: primarySeries.context) |
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discontinuityMarkers(points: primarySeries.points, context: primarySeries.context) |
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renderedChart( |
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powerSeries: powerSeries, |
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voltageSeries: voltageSeries, |
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currentSeries: currentSeries |
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) |
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} |
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.clipShape(RoundedRectangle(cornerRadius: 18, style: .continuous)) |
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.frame(maxWidth: .infinity) |
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.frame(height: plotHeight) |
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secondaryAxisView( |
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height: plotHeight, |
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powerSeries: powerSeries, |
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voltageSeries: voltageSeries, |
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currentSeries: currentSeries |
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) |
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.frame(width: axisColumnWidth, height: plotHeight) |
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} |
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.overlay(alignment: .bottom) {
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scaleControlsPill( |
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voltageSeries: voltageSeries, |
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currentSeries: currentSeries |
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) |
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.padding(.bottom, compactLayout ? 6 : 10) |
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} |
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xAxisLabelsView(context: primarySeries.context) |
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.frame(height: xAxisHeight) |
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} |
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.frame(maxWidth: .infinity, maxHeight: .infinity, alignment: .top) |
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} |
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.frame(height: plotSectionHeight) |
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} |
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} else {
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VStack(alignment: .leading, spacing: 12) {
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chartToggleBar() |
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Text("Select at least one measurement series.")
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.foregroundColor(.secondary) |
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} |
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} |
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} |
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.font(chartBaseFont) |
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.frame(maxWidth: .infinity, maxHeight: .infinity, alignment: .topLeading) |
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.onReceive(Timer.publish(every: 1, on: .main, in: .common).autoconnect()) { now in
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guard timeRange == nil else { return }
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chartNow = now |
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} |
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} |
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private func chartToggleBar() -> some View {
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let condensedLayout = compactLayout || verticalSizeClass == .compact |
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let sectionSpacing: CGFloat = condensedLayout ? 8 : (isLargeDisplay ? 12 : 10) |
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let controlsPanel = HStack(alignment: .center, spacing: sectionSpacing) {
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seriesToggleRow(condensedLayout: condensedLayout) |
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} |
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.padding(.horizontal, condensedLayout ? 10 : (isLargeDisplay ? 14 : 12)) |
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.padding(.vertical, condensedLayout ? 8 : (isLargeDisplay ? 12 : 10)) |
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.background( |
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RoundedRectangle(cornerRadius: condensedLayout ? 14 : 16, style: .continuous) |
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.fill(Color.primary.opacity(0.045)) |
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) |
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.overlay( |
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RoundedRectangle(cornerRadius: condensedLayout ? 14 : 16, style: .continuous) |
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.stroke(Color.secondary.opacity(0.14), lineWidth: 1) |
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) |
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return Group {
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if stackedToolbarLayout {
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VStack(alignment: .leading, spacing: condensedLayout ? 8 : 10) {
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controlsPanel |
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HStack {
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Spacer(minLength: 0) |
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resetBufferButton(condensedLayout: condensedLayout) |
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} |
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} |
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} else {
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HStack(alignment: .top, spacing: isLargeDisplay ? 14 : 12) {
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controlsPanel |
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Spacer(minLength: 0) |
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resetBufferButton(condensedLayout: condensedLayout) |
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} |
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} |
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} |
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.frame(maxWidth: .infinity, alignment: .leading) |
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} |
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private var shouldFloatScaleControlsOverChart: Bool {
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#if os(iOS) |
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if availableSize.width > 0, availableSize.height > 0 {
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return availableSize.width > availableSize.height |
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} |
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return horizontalSizeClass != .compact && verticalSizeClass == .compact |
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#else |
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return false |
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#endif |
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} |
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private func scaleControlsPill( |
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voltageSeries: SeriesData, |
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currentSeries: SeriesData |
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) -> some View {
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let condensedLayout = compactLayout || verticalSizeClass == .compact |
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return originControlsRow( |
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voltageSeries: voltageSeries, |
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currentSeries: currentSeries, |
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condensedLayout: condensedLayout, |
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showsLabel: !shouldFloatScaleControlsOverChart && showsLabeledOriginControls |
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) |
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.padding(.horizontal, condensedLayout ? 10 : (isLargeDisplay ? 12 : 10)) |
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.padding(.vertical, condensedLayout ? 8 : (isLargeDisplay ? 10 : 8)) |
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.background( |
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Capsule(style: .continuous) |
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.fill(shouldFloatScaleControlsOverChart ? Color.clear : Color.primary.opacity(0.08)) |
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) |
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.overlay( |
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Capsule(style: .continuous) |
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.stroke( |
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shouldFloatScaleControlsOverChart ? Color.clear : Color.secondary.opacity(0.18), |
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lineWidth: 1 |
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) |
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) |
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} |
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private func seriesToggleRow(condensedLayout: Bool) -> some View {
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HStack(spacing: condensedLayout ? 6 : 8) {
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seriesToggleButton(title: "Voltage", isOn: displayVoltage, condensedLayout: condensedLayout) {
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displayVoltage.toggle() |
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if displayVoltage {
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displayPower = false |
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} |
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} |
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seriesToggleButton(title: "Current", isOn: displayCurrent, condensedLayout: condensedLayout) {
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displayCurrent.toggle() |
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if displayCurrent {
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displayPower = false |
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} |
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} |
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seriesToggleButton(title: "Power", isOn: displayPower, condensedLayout: condensedLayout) {
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displayPower.toggle() |
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if displayPower {
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displayCurrent = false |
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displayVoltage = false |
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} |
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} |
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} |
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} |
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private func originControlsRow( |
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voltageSeries: SeriesData, |
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currentSeries: SeriesData, |
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condensedLayout: Bool, |
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showsLabel: Bool |
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) -> some View {
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HStack(spacing: condensedLayout ? 8 : 10) {
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symbolControlChip( |
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systemImage: "equal.circle", |
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enabled: supportsSharedOrigin, |
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active: useSharedOrigin && supportsSharedOrigin, |
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condensedLayout: condensedLayout, |
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showsLabel: showsLabel, |
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label: "Match Y Scale", |
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accessibilityLabel: "Match Y scale" |
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) {
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toggleSharedOrigin( |
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voltageSeries: voltageSeries, |
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currentSeries: currentSeries |
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) |
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} |
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symbolControlChip( |
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systemImage: pinOrigin ? "pin.fill" : "pin.slash", |
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enabled: true, |
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active: pinOrigin, |
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condensedLayout: condensedLayout, |
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showsLabel: showsLabel, |
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label: pinOrigin ? "Origin Locked" : "Origin Auto", |
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accessibilityLabel: pinOrigin ? "Unlock origin" : "Lock origin" |
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) {
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togglePinnedOrigin( |
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voltageSeries: voltageSeries, |
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currentSeries: currentSeries |
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) |
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} |
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symbolControlChip( |
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systemImage: "0.circle", |
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enabled: true, |
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active: pinnedOriginIsZero, |
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condensedLayout: condensedLayout, |
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showsLabel: showsLabel, |
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label: "Origin 0", |
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accessibilityLabel: "Set origin to zero" |
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) {
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setVisibleOriginsToZero() |
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} |
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| 384 | ||
| 385 |
} |
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} |
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| 387 | ||
| 388 |
private func seriesToggleButton( |
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title: String, |
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isOn: Bool, |
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condensedLayout: Bool, |
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action: @escaping () -> Void |
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) -> some View {
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Button(action: action) {
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Text(title) |
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.font(seriesToggleFont(condensedLayout: condensedLayout)) |
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.lineLimit(1) |
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.minimumScaleFactor(0.82) |
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.foregroundColor(isOn ? .white : .blue) |
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.padding(.horizontal, condensedLayout ? 10 : (isLargeDisplay ? 16 : 12)) |
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.padding(.vertical, condensedLayout ? 7 : (isLargeDisplay ? 10 : 8)) |
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.frame(minWidth: condensedLayout ? 0 : (isLargeDisplay ? 104 : 84)) |
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.frame(maxWidth: stackedToolbarLayout ? .infinity : nil) |
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.background( |
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RoundedRectangle(cornerRadius: condensedLayout ? 13 : 15, style: .continuous) |
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.fill(isOn ? Color.blue.opacity(0.88) : Color.blue.opacity(0.12)) |
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) |
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.overlay( |
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RoundedRectangle(cornerRadius: condensedLayout ? 13 : 15, style: .continuous) |
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.stroke(Color.blue, lineWidth: 1.5) |
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) |
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| 412 |
} |
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.buttonStyle(.plain) |
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} |
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| 415 | ||
| 416 |
private func symbolControlChip( |
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systemImage: String, |
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enabled: Bool, |
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| 419 |
active: Bool, |
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| 420 |
condensedLayout: Bool, |
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| 421 |
showsLabel: Bool, |
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label: String, |
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| 423 |
accessibilityLabel: String, |
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| 424 |
action: @escaping () -> Void |
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| 425 |
) -> some View {
|
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| 426 |
Button(action: {
|
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| 427 |
action() |
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| 428 |
}) {
|
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| 429 |
Group {
|
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| 430 |
if showsLabel {
|
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| 431 |
Label(label, systemImage: systemImage) |
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| 432 |
.font(controlChipFont(condensedLayout: condensedLayout)) |
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| 433 |
.padding(.horizontal, condensedLayout ? 10 : 12) |
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| 434 |
.padding(.vertical, condensedLayout ? 7 : (isLargeDisplay ? 9 : 8)) |
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} else {
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Image(systemName: systemImage) |
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| 437 |
.font(.system(size: condensedLayout ? 15 : (isLargeDisplay ? 18 : 16), weight: .semibold)) |
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| 438 |
.frame( |
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width: condensedLayout ? 34 : (isLargeDisplay ? 42 : 38), |
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| 440 |
height: condensedLayout ? 34 : (isLargeDisplay ? 42 : 38) |
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| 441 |
) |
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| 442 |
} |
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| 443 |
} |
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| 444 |
.background( |
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| 445 |
Capsule(style: .continuous) |
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| 446 |
.fill(active ? Color.orange.opacity(0.18) : Color.secondary.opacity(0.10)) |
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| 447 |
) |
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| 448 |
} |
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| 449 |
.buttonStyle(.plain) |
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| 450 |
.foregroundColor(enabled ? .primary : .secondary) |
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| 451 |
.opacity(enabled ? 1 : 0.55) |
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.accessibilityLabel(accessibilityLabel) |
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| 453 |
} |
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| 454 | ||
| 455 |
private func resetBufferButton(condensedLayout: Bool) -> some View {
|
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| 456 |
Button(action: {
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| 457 |
showResetConfirmation = true |
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| 458 |
}) {
|
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| 459 |
Label(condensedLayout ? "Reset" : "Reset Buffer", systemImage: "trash") |
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| 460 |
.font(controlChipFont(condensedLayout: condensedLayout)) |
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| 461 |
.padding(.horizontal, condensedLayout ? 14 : 16) |
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| 462 |
.padding(.vertical, condensedLayout ? 10 : (isLargeDisplay ? 12 : 11)) |
|
| 463 |
} |
|
| 464 |
.buttonStyle(.plain) |
|
| 465 |
.foregroundColor(.white) |
|
| 466 |
.background( |
|
| 467 |
Capsule(style: .continuous) |
|
| 468 |
.fill(Color.red.opacity(0.8)) |
|
| 469 |
) |
|
| 470 |
.fixedSize(horizontal: true, vertical: false) |
|
| 471 |
.confirmationDialog("Reset captured measurements?", isPresented: $showResetConfirmation, titleVisibility: .visible) {
|
|
| 472 |
Button("Reset series", role: .destructive) {
|
|
| 473 |
measurements.resetSeries() |
|
| 474 |
} |
|
| 475 |
Button("Cancel", role: .cancel) {}
|
|
| 476 |
} |
|
| 477 |
} |
|
| 478 | ||
| 479 |
private func seriesToggleFont(condensedLayout: Bool) -> Font {
|
|
| 480 |
if isLargeDisplay {
|
|
| 481 |
return .body.weight(.semibold) |
|
| 482 |
} |
|
| 483 |
return (condensedLayout ? Font.callout : .body).weight(.semibold) |
|
| 484 |
} |
|
| 485 | ||
| 486 |
private func controlChipFont(condensedLayout: Bool) -> Font {
|
|
| 487 |
if isLargeDisplay {
|
|
| 488 |
return .callout.weight(.semibold) |
|
| 489 |
} |
|
| 490 |
return (condensedLayout ? Font.callout : .footnote).weight(.semibold) |
|
| 491 |
} |
|
| 492 | ||
| 493 |
@ViewBuilder |
|
| 494 |
private func primaryAxisView( |
|
| 495 |
height: CGFloat, |
|
| 496 |
powerSeries: SeriesData, |
|
| 497 |
voltageSeries: SeriesData, |
|
| 498 |
currentSeries: SeriesData |
|
| 499 |
) -> some View {
|
|
| 500 |
if displayPower {
|
|
| 501 |
yAxisLabelsView( |
|
| 502 |
height: height, |
|
| 503 |
context: powerSeries.context, |
|
| 504 |
seriesKind: .power, |
|
| 505 |
measurementUnit: powerSeries.kind.unit, |
|
| 506 |
tint: powerSeries.kind.tint |
|
| 507 |
) |
|
| 508 |
} else if displayVoltage {
|
|
| 509 |
yAxisLabelsView( |
|
| 510 |
height: height, |
|
| 511 |
context: voltageSeries.context, |
|
| 512 |
seriesKind: .voltage, |
|
| 513 |
measurementUnit: voltageSeries.kind.unit, |
|
| 514 |
tint: voltageSeries.kind.tint |
|
| 515 |
) |
|
| 516 |
} else if displayCurrent {
|
|
| 517 |
yAxisLabelsView( |
|
| 518 |
height: height, |
|
| 519 |
context: currentSeries.context, |
|
| 520 |
seriesKind: .current, |
|
| 521 |
measurementUnit: currentSeries.kind.unit, |
|
| 522 |
tint: currentSeries.kind.tint |
|
| 523 |
) |
|
| 524 |
} |
|
| 525 |
} |
|
| 526 | ||
| 527 |
@ViewBuilder |
|
| 528 |
private func renderedChart( |
|
| 529 |
powerSeries: SeriesData, |
|
| 530 |
voltageSeries: SeriesData, |
|
| 531 |
currentSeries: SeriesData |
|
| 532 |
) -> some View {
|
|
| 533 |
if self.displayPower {
|
|
| 534 |
Chart(points: powerSeries.points, context: powerSeries.context, strokeColor: .red) |
|
| 535 |
.opacity(0.72) |
|
| 536 |
} else {
|
|
| 537 |
if self.displayVoltage {
|
|
| 538 |
Chart(points: voltageSeries.points, context: voltageSeries.context, strokeColor: .green) |
|
| 539 |
.opacity(0.78) |
|
| 540 |
} |
|
| 541 |
if self.displayCurrent {
|
|
| 542 |
Chart(points: currentSeries.points, context: currentSeries.context, strokeColor: .blue) |
|
| 543 |
.opacity(0.78) |
|
| 544 |
} |
|
| 545 |
} |
|
| 546 |
} |
|
| 547 | ||
| 548 |
@ViewBuilder |
|
| 549 |
private func secondaryAxisView( |
|
| 550 |
height: CGFloat, |
|
| 551 |
powerSeries: SeriesData, |
|
| 552 |
voltageSeries: SeriesData, |
|
| 553 |
currentSeries: SeriesData |
|
| 554 |
) -> some View {
|
|
| 555 |
if displayVoltage && displayCurrent {
|
|
| 556 |
yAxisLabelsView( |
|
| 557 |
height: height, |
|
| 558 |
context: currentSeries.context, |
|
| 559 |
seriesKind: .current, |
|
| 560 |
measurementUnit: currentSeries.kind.unit, |
|
| 561 |
tint: currentSeries.kind.tint |
|
| 562 |
) |
|
| 563 |
} else {
|
|
| 564 |
primaryAxisView( |
|
| 565 |
height: height, |
|
| 566 |
powerSeries: powerSeries, |
|
| 567 |
voltageSeries: voltageSeries, |
|
| 568 |
currentSeries: currentSeries |
|
| 569 |
) |
|
| 570 |
} |
|
| 571 |
} |
|
| 572 | ||
| 573 |
private func displayedPrimarySeries( |
|
| 574 |
powerSeries: SeriesData, |
|
| 575 |
voltageSeries: SeriesData, |
|
| 576 |
currentSeries: SeriesData |
|
| 577 |
) -> SeriesData? {
|
|
| 578 |
if displayPower {
|
|
| 579 |
return powerSeries |
|
| 580 |
} |
|
| 581 |
if displayVoltage {
|
|
| 582 |
return voltageSeries |
|
| 583 |
} |
|
| 584 |
if displayCurrent {
|
|
| 585 |
return currentSeries |
|
| 586 |
} |
|
| 587 |
return nil |
|
| 588 |
} |
|
| 589 | ||
| 590 |
private func series( |
|
| 591 |
for measurement: Measurements.Measurement, |
|
| 592 |
kind: SeriesKind, |
|
| 593 |
minimumYSpan: Double |
|
| 594 |
) -> SeriesData {
|
|
| 595 |
let points = measurement.points.filter { point in
|
|
| 596 |
guard let timeRange else { return true }
|
|
| 597 |
return timeRange.contains(point.timestamp) |
|
| 598 |
} |
|
| 599 |
let samplePoints = points.filter { $0.isSample }
|
|
| 600 |
let context = ChartContext() |
|
| 601 | ||
| 602 |
let autoBounds = automaticYBounds( |
|
| 603 |
for: samplePoints, |
|
| 604 |
minimumYSpan: minimumYSpan |
|
| 605 |
) |
|
| 606 |
let xBounds = xBounds(for: samplePoints) |
|
| 607 |
let lowerBound = resolvedLowerBound( |
|
| 608 |
for: kind, |
|
| 609 |
autoLowerBound: autoBounds.lowerBound |
|
| 610 |
) |
|
| 611 |
let upperBound = resolvedUpperBound( |
|
| 612 |
for: kind, |
|
| 613 |
lowerBound: lowerBound, |
|
| 614 |
autoUpperBound: autoBounds.upperBound, |
|
| 615 |
maximumSampleValue: samplePoints.map(\.value).max(), |
|
| 616 |
minimumYSpan: minimumYSpan |
|
| 617 |
) |
|
| 618 | ||
| 619 |
context.setBounds( |
|
| 620 |
xMin: CGFloat(xBounds.lowerBound.timeIntervalSince1970), |
|
| 621 |
xMax: CGFloat(xBounds.upperBound.timeIntervalSince1970), |
|
| 622 |
yMin: CGFloat(lowerBound), |
|
| 623 |
yMax: CGFloat(upperBound) |
|
| 624 |
) |
|
| 625 | ||
| 626 |
return SeriesData( |
|
| 627 |
kind: kind, |
|
| 628 |
points: points, |
|
| 629 |
samplePoints: samplePoints, |
|
| 630 |
context: context, |
|
| 631 |
autoLowerBound: autoBounds.lowerBound, |
|
| 632 |
autoUpperBound: autoBounds.upperBound, |
|
| 633 |
maximumSampleValue: samplePoints.map(\.value).max() |
|
| 634 |
) |
|
| 635 |
} |
|
| 636 | ||
| 637 |
private var supportsSharedOrigin: Bool {
|
|
| 638 |
displayVoltage && displayCurrent && !displayPower |
|
| 639 |
} |
|
| 640 | ||
| 641 |
private var minimumSharedScaleSpan: Double {
|
|
| 642 |
max(minimumVoltageSpan, minimumCurrentSpan) |
|
| 643 |
} |
|
| 644 | ||
| 645 |
private var pinnedOriginIsZero: Bool {
|
|
| 646 |
if useSharedOrigin && supportsSharedOrigin {
|
|
| 647 |
return pinOrigin && sharedAxisOrigin == 0 |
|
| 648 |
} |
|
| 649 | ||
| 650 |
if displayPower {
|
|
| 651 |
return pinOrigin && powerAxisOrigin == 0 |
|
| 652 |
} |
|
| 653 | ||
| 654 |
let visibleOrigins = [ |
|
| 655 |
displayVoltage ? voltageAxisOrigin : nil, |
|
| 656 |
displayCurrent ? currentAxisOrigin : nil |
|
| 657 |
] |
|
| 658 |
.compactMap { $0 }
|
|
| 659 | ||
| 660 |
guard !visibleOrigins.isEmpty else { return false }
|
|
| 661 |
return pinOrigin && visibleOrigins.allSatisfy { $0 == 0 }
|
|
| 662 |
} |
|
| 663 | ||
| 664 |
private func toggleSharedOrigin( |
|
| 665 |
voltageSeries: SeriesData, |
|
| 666 |
currentSeries: SeriesData |
|
| 667 |
) {
|
|
| 668 |
guard supportsSharedOrigin else { return }
|
|
| 669 | ||
| 670 |
if useSharedOrigin {
|
|
| 671 |
useSharedOrigin = false |
|
| 672 |
return |
|
| 673 |
} |
|
| 674 | ||
| 675 |
captureCurrentOrigins( |
|
| 676 |
voltageSeries: voltageSeries, |
|
| 677 |
currentSeries: currentSeries |
|
| 678 |
) |
|
| 679 |
sharedAxisOrigin = min(voltageAxisOrigin, currentAxisOrigin) |
|
| 680 |
sharedAxisUpperBound = max(voltageSeries.autoUpperBound, currentSeries.autoUpperBound) |
|
| 681 |
ensureSharedScaleSpan() |
|
| 682 |
useSharedOrigin = true |
|
| 683 |
pinOrigin = true |
|
| 684 |
} |
|
| 685 | ||
| 686 |
private func togglePinnedOrigin( |
|
| 687 |
voltageSeries: SeriesData, |
|
| 688 |
currentSeries: SeriesData |
|
| 689 |
) {
|
|
| 690 |
if pinOrigin {
|
|
| 691 |
pinOrigin = false |
|
| 692 |
return |
|
| 693 |
} |
|
| 694 | ||
| 695 |
captureCurrentOrigins( |
|
| 696 |
voltageSeries: voltageSeries, |
|
| 697 |
currentSeries: currentSeries |
|
| 698 |
) |
|
| 699 |
pinOrigin = true |
|
| 700 |
} |
|
| 701 | ||
| 702 |
private func setVisibleOriginsToZero() {
|
|
| 703 |
if useSharedOrigin && supportsSharedOrigin {
|
|
| 704 |
let currentSpan = max(sharedAxisUpperBound - sharedAxisOrigin, minimumSharedScaleSpan) |
|
| 705 |
sharedAxisOrigin = 0 |
|
| 706 |
sharedAxisUpperBound = currentSpan |
|
| 707 |
voltageAxisOrigin = 0 |
|
| 708 |
currentAxisOrigin = 0 |
|
| 709 |
ensureSharedScaleSpan() |
|
| 710 |
} else {
|
|
| 711 |
if displayPower {
|
|
| 712 |
powerAxisOrigin = 0 |
|
| 713 |
} |
|
| 714 |
if displayVoltage {
|
|
| 715 |
voltageAxisOrigin = 0 |
|
| 716 |
} |
|
| 717 |
if displayCurrent {
|
|
| 718 |
currentAxisOrigin = 0 |
|
| 719 |
} |
|
| 720 |
} |
|
| 721 | ||
| 722 |
pinOrigin = true |
|
| 723 |
} |
|
| 724 | ||
| 725 |
private func captureCurrentOrigins( |
|
| 726 |
voltageSeries: SeriesData, |
|
| 727 |
currentSeries: SeriesData |
|
| 728 |
) {
|
|
| 729 |
powerAxisOrigin = displayedLowerBoundForSeries(.power) |
|
| 730 |
voltageAxisOrigin = voltageSeries.autoLowerBound |
|
| 731 |
currentAxisOrigin = currentSeries.autoLowerBound |
|
| 732 |
sharedAxisOrigin = min(voltageAxisOrigin, currentAxisOrigin) |
|
| 733 |
sharedAxisUpperBound = max(voltageSeries.autoUpperBound, currentSeries.autoUpperBound) |
|
| 734 |
ensureSharedScaleSpan() |
|
| 735 |
} |
|
| 736 | ||
| 737 |
private func displayedLowerBoundForSeries(_ kind: SeriesKind) -> Double {
|
|
| 738 |
switch kind {
|
|
| 739 |
case .power: |
|
| 740 |
return pinOrigin ? powerAxisOrigin : automaticYBounds(for: filteredSamplePoints(measurements.power), minimumYSpan: minimumPowerSpan).lowerBound |
|
| 741 |
case .voltage: |
|
| 742 |
if pinOrigin && useSharedOrigin && supportsSharedOrigin {
|
|
| 743 |
return sharedAxisOrigin |
|
| 744 |
} |
|
| 745 |
return pinOrigin ? voltageAxisOrigin : automaticYBounds(for: filteredSamplePoints(measurements.voltage), minimumYSpan: minimumVoltageSpan).lowerBound |
|
| 746 |
case .current: |
|
| 747 |
if pinOrigin && useSharedOrigin && supportsSharedOrigin {
|
|
| 748 |
return sharedAxisOrigin |
|
| 749 |
} |
|
| 750 |
return pinOrigin ? currentAxisOrigin : automaticYBounds(for: filteredSamplePoints(measurements.current), minimumYSpan: minimumCurrentSpan).lowerBound |
|
| 751 |
} |
|
| 752 |
} |
|
| 753 | ||
| 754 |
private func filteredSamplePoints(_ measurement: Measurements.Measurement) -> [Measurements.Measurement.Point] {
|
|
| 755 |
measurement.points.filter { point in
|
|
| 756 |
point.isSample && (timeRange?.contains(point.timestamp) ?? true) |
|
| 757 |
} |
|
| 758 |
} |
|
| 759 | ||
| 760 |
private func xBounds( |
|
| 761 |
for samplePoints: [Measurements.Measurement.Point] |
|
| 762 |
) -> ClosedRange<Date> {
|
|
| 763 |
if let timeRange {
|
|
| 764 |
return timeRange |
|
| 765 |
} |
|
| 766 | ||
| 767 |
let upperBound = max(samplePoints.last?.timestamp ?? chartNow, chartNow) |
|
| 768 |
let lowerBound = samplePoints.first?.timestamp ?? upperBound.addingTimeInterval(-defaultEmptyChartTimeSpan) |
|
| 769 | ||
| 770 |
if upperBound.timeIntervalSince(lowerBound) >= minimumTimeSpan {
|
|
| 771 |
return lowerBound...upperBound |
|
| 772 |
} |
|
| 773 | ||
| 774 |
return upperBound.addingTimeInterval(-minimumTimeSpan)...upperBound |
|
| 775 |
} |
|
| 776 | ||
| 777 |
private func automaticYBounds( |
|
| 778 |
for samplePoints: [Measurements.Measurement.Point], |
|
| 779 |
minimumYSpan: Double |
|
| 780 |
) -> (lowerBound: Double, upperBound: Double) {
|
|
| 781 |
let negativeAllowance = max(0.05, minimumYSpan * 0.08) |
|
| 782 | ||
| 783 |
guard |
|
| 784 |
let minimumSampleValue = samplePoints.map(\.value).min(), |
|
| 785 |
let maximumSampleValue = samplePoints.map(\.value).max() |
|
| 786 |
else {
|
|
| 787 |
return (0, minimumYSpan) |
|
| 788 |
} |
|
| 789 | ||
| 790 |
var lowerBound = minimumSampleValue |
|
| 791 |
var upperBound = maximumSampleValue |
|
| 792 |
let currentSpan = upperBound - lowerBound |
|
| 793 | ||
| 794 |
if currentSpan < minimumYSpan {
|
|
| 795 |
let expansion = (minimumYSpan - currentSpan) / 2 |
|
| 796 |
lowerBound -= expansion |
|
| 797 |
upperBound += expansion |
|
| 798 |
} |
|
| 799 | ||
| 800 |
if minimumSampleValue >= 0, lowerBound < -negativeAllowance {
|
|
| 801 |
let shift = -negativeAllowance - lowerBound |
|
| 802 |
lowerBound += shift |
|
| 803 |
upperBound += shift |
|
| 804 |
} |
|
| 805 | ||
| 806 |
let snappedLowerBound = snappedOriginValue(lowerBound) |
|
| 807 |
let resolvedUpperBound = max(upperBound, snappedLowerBound + minimumYSpan) |
|
| 808 |
return (snappedLowerBound, resolvedUpperBound) |
|
| 809 |
} |
|
| 810 | ||
| 811 |
private func resolvedLowerBound( |
|
| 812 |
for kind: SeriesKind, |
|
| 813 |
autoLowerBound: Double |
|
| 814 |
) -> Double {
|
|
| 815 |
guard pinOrigin else { return autoLowerBound }
|
|
| 816 | ||
| 817 |
if useSharedOrigin && supportsSharedOrigin && (kind == .voltage || kind == .current) {
|
|
| 818 |
return sharedAxisOrigin |
|
| 819 |
} |
|
| 820 | ||
| 821 |
switch kind {
|
|
| 822 |
case .power: |
|
| 823 |
return powerAxisOrigin |
|
| 824 |
case .voltage: |
|
| 825 |
return voltageAxisOrigin |
|
| 826 |
case .current: |
|
| 827 |
return currentAxisOrigin |
|
| 828 |
} |
|
| 829 |
} |
|
| 830 | ||
| 831 |
private func resolvedUpperBound( |
|
| 832 |
for kind: SeriesKind, |
|
| 833 |
lowerBound: Double, |
|
| 834 |
autoUpperBound: Double, |
|
| 835 |
maximumSampleValue: Double?, |
|
| 836 |
minimumYSpan: Double |
|
| 837 |
) -> Double {
|
|
| 838 |
guard pinOrigin else {
|
|
| 839 |
return autoUpperBound |
|
| 840 |
} |
|
| 841 | ||
| 842 |
if useSharedOrigin && supportsSharedOrigin && (kind == .voltage || kind == .current) {
|
|
| 843 |
return max(sharedAxisUpperBound, sharedAxisOrigin + minimumSharedScaleSpan) |
|
| 844 |
} |
|
| 845 | ||
| 846 |
return max( |
|
| 847 |
maximumSampleValue ?? lowerBound, |
|
| 848 |
lowerBound + minimumYSpan, |
|
| 849 |
autoUpperBound |
|
| 850 |
) |
|
| 851 |
} |
|
| 852 | ||
| 853 |
private func applyOriginDelta(_ delta: Double, kind: SeriesKind) {
|
|
| 854 |
let baseline = displayedLowerBoundForSeries(kind) |
|
| 855 |
let proposedOrigin = snappedOriginValue(baseline + delta) |
|
| 856 | ||
| 857 |
if useSharedOrigin && supportsSharedOrigin && (kind == .voltage || kind == .current) {
|
|
| 858 |
let currentSpan = max(sharedAxisUpperBound - sharedAxisOrigin, minimumSharedScaleSpan) |
|
| 859 |
sharedAxisOrigin = min(proposedOrigin, maximumVisibleSharedOrigin()) |
|
| 860 |
sharedAxisUpperBound = sharedAxisOrigin + currentSpan |
|
| 861 |
ensureSharedScaleSpan() |
|
| 862 |
} else {
|
|
| 863 |
switch kind {
|
|
| 864 |
case .power: |
|
| 865 |
powerAxisOrigin = min(proposedOrigin, maximumVisibleOrigin(for: .power)) |
|
| 866 |
case .voltage: |
|
| 867 |
voltageAxisOrigin = min(proposedOrigin, maximumVisibleOrigin(for: .voltage)) |
|
| 868 |
case .current: |
|
| 869 |
currentAxisOrigin = min(proposedOrigin, maximumVisibleOrigin(for: .current)) |
|
| 870 |
} |
|
| 871 |
} |
|
| 872 | ||
| 873 |
pinOrigin = true |
|
| 874 |
} |
|
| 875 | ||
| 876 |
private func clearOriginOffset(for kind: SeriesKind) {
|
|
| 877 |
if useSharedOrigin && supportsSharedOrigin && (kind == .voltage || kind == .current) {
|
|
| 878 |
let currentSpan = max(sharedAxisUpperBound - sharedAxisOrigin, minimumSharedScaleSpan) |
|
| 879 |
sharedAxisOrigin = 0 |
|
| 880 |
sharedAxisUpperBound = currentSpan |
|
| 881 |
ensureSharedScaleSpan() |
|
| 882 |
voltageAxisOrigin = 0 |
|
| 883 |
currentAxisOrigin = 0 |
|
| 884 |
} else {
|
|
| 885 |
switch kind {
|
|
| 886 |
case .power: |
|
| 887 |
powerAxisOrigin = 0 |
|
| 888 |
case .voltage: |
|
| 889 |
voltageAxisOrigin = 0 |
|
| 890 |
case .current: |
|
| 891 |
currentAxisOrigin = 0 |
|
| 892 |
} |
|
| 893 |
} |
|
| 894 | ||
| 895 |
pinOrigin = true |
|
| 896 |
} |
|
| 897 | ||
| 898 |
private func handleAxisTap(locationY: CGFloat, totalHeight: CGFloat, kind: SeriesKind) {
|
|
| 899 |
guard totalHeight > 1 else { return }
|
|
| 900 | ||
| 901 |
let normalized = max(0, min(1, locationY / totalHeight)) |
|
| 902 |
if normalized < (1.0 / 3.0) {
|
|
| 903 |
applyOriginDelta(-1, kind: kind) |
|
| 904 |
} else if normalized < (2.0 / 3.0) {
|
|
| 905 |
clearOriginOffset(for: kind) |
|
| 906 |
} else {
|
|
| 907 |
applyOriginDelta(1, kind: kind) |
|
| 908 |
} |
|
| 909 |
} |
|
| 910 | ||
| 911 |
private func maximumVisibleOrigin(for kind: SeriesKind) -> Double {
|
|
| 912 |
switch kind {
|
|
| 913 |
case .power: |
|
| 914 |
return snappedOriginValue(filteredSamplePoints(measurements.power).map(\.value).min() ?? 0) |
|
| 915 |
case .voltage: |
|
| 916 |
return snappedOriginValue(filteredSamplePoints(measurements.voltage).map(\.value).min() ?? 0) |
|
| 917 |
case .current: |
|
| 918 |
return snappedOriginValue(filteredSamplePoints(measurements.current).map(\.value).min() ?? 0) |
|
| 919 |
} |
|
| 920 |
} |
|
| 921 | ||
| 922 |
private func maximumVisibleSharedOrigin() -> Double {
|
|
| 923 |
min( |
|
| 924 |
maximumVisibleOrigin(for: .voltage), |
|
| 925 |
maximumVisibleOrigin(for: .current) |
|
| 926 |
) |
|
| 927 |
} |
|
| 928 | ||
| 929 |
private func ensureSharedScaleSpan() {
|
|
| 930 |
sharedAxisUpperBound = max(sharedAxisUpperBound, sharedAxisOrigin + minimumSharedScaleSpan) |
|
| 931 |
} |
|
| 932 | ||
| 933 |
private func snappedOriginValue(_ value: Double) -> Double {
|
|
| 934 |
if value >= 0 {
|
|
| 935 |
return value.rounded(.down) |
|
| 936 |
} |
|
| 937 | ||
| 938 |
return value.rounded(.up) |
|
| 939 |
} |
|
| 940 | ||
| 941 |
private func yGuidePosition( |
|
| 942 |
for labelIndex: Int, |
|
| 943 |
context: ChartContext, |
|
| 944 |
height: CGFloat |
|
| 945 |
) -> CGFloat {
|
|
| 946 |
let value = context.yAxisLabel(for: labelIndex, of: yLabels) |
|
| 947 |
let anchorPoint = CGPoint(x: context.origin.x, y: CGFloat(value)) |
|
| 948 |
return context.placeInRect(point: anchorPoint).y * height |
|
| 949 |
} |
|
| 950 | ||
| 951 |
private func xGuidePosition( |
|
| 952 |
for labelIndex: Int, |
|
| 953 |
context: ChartContext, |
|
| 954 |
width: CGFloat |
|
| 955 |
) -> CGFloat {
|
|
| 956 |
let value = context.xAxisLabel(for: labelIndex, of: xLabels) |
|
| 957 |
let anchorPoint = CGPoint(x: CGFloat(value), y: context.origin.y) |
|
| 958 |
return context.placeInRect(point: anchorPoint).x * width |
|
| 959 |
} |
|
| 960 | ||
| 961 |
// MARK: Cu iteratie nu functioneaza deoarece view-ul din bucla nu este reimprospatat la modificare obiectului observat |
|
| 962 |
fileprivate func xAxisLabelsView( |
|
| 963 |
context: ChartContext |
|
| 964 |
) -> some View {
|
|
| 965 |
var timeFormat: String? |
|
| 966 |
switch context.size.width {
|
|
| 967 |
case 0..<3600: timeFormat = "HH:mm:ss" |
|
| 968 |
case 3600...86400: timeFormat = "HH:mm" |
|
| 969 |
default: timeFormat = "E HH:mm" |
|
| 970 |
} |
|
| 971 |
let labels = (1...xLabels).map {
|
|
| 972 |
Date(timeIntervalSince1970: context.xAxisLabel(for: $0, of: self.xLabels)).format(as: timeFormat!) |
|
| 973 |
} |
|
| 974 | ||
| 975 |
return HStack(spacing: chartSectionSpacing) {
|
|
| 976 |
Color.clear |
|
| 977 |
.frame(width: axisColumnWidth) |
|
| 978 | ||
| 979 |
GeometryReader { geometry in
|
|
| 980 |
let labelWidth = max( |
|
| 981 |
geometry.size.width / CGFloat(max(xLabels - 1, 1)), |
|
| 982 |
1 |
|
| 983 |
) |
|
| 984 | ||
| 985 |
ZStack(alignment: .topLeading) {
|
|
| 986 |
Path { path in
|
|
| 987 |
for labelIndex in 1...self.xLabels {
|
|
| 988 |
let x = xGuidePosition( |
|
| 989 |
for: labelIndex, |
|
| 990 |
context: context, |
|
| 991 |
width: geometry.size.width |
|
| 992 |
) |
|
| 993 |
path.move(to: CGPoint(x: x, y: 0)) |
|
| 994 |
path.addLine(to: CGPoint(x: x, y: 6)) |
|
| 995 |
} |
|
| 996 |
} |
|
| 997 |
.stroke(Color.secondary.opacity(0.26), lineWidth: 0.75) |
|
| 998 | ||
| 999 |
ForEach(Array(labels.enumerated()), id: \.offset) { item in
|
|
| 1000 |
let labelIndex = item.offset + 1 |
|
| 1001 |
let centerX = xGuidePosition( |
|
| 1002 |
for: labelIndex, |
|
| 1003 |
context: context, |
|
| 1004 |
width: geometry.size.width |
|
| 1005 |
) |
|
| 1006 | ||
| 1007 |
Text(item.element) |
|
| 1008 |
.font((isLargeDisplay ? Font.callout : .caption).weight(.semibold)) |
|
| 1009 |
.monospacedDigit() |
|
| 1010 |
.lineLimit(1) |
|
| 1011 |
.minimumScaleFactor(0.74) |
|
| 1012 |
.frame(width: labelWidth) |
|
| 1013 |
.position( |
|
| 1014 |
x: centerX, |
|
| 1015 |
y: geometry.size.height * 0.7 |
|
| 1016 |
) |
|
| 1017 |
} |
|
| 1018 |
} |
|
| 1019 |
.frame(maxWidth: .infinity, maxHeight: .infinity, alignment: .topLeading) |
|
| 1020 |
} |
|
| 1021 | ||
| 1022 |
Color.clear |
|
| 1023 |
.frame(width: axisColumnWidth) |
|
| 1024 |
} |
|
| 1025 |
} |
|
| 1026 | ||
| 1027 |
private func yAxisLabelsView( |
|
| 1028 |
height: CGFloat, |
|
| 1029 |
context: ChartContext, |
|
| 1030 |
seriesKind: SeriesKind, |
|
| 1031 |
measurementUnit: String, |
|
| 1032 |
tint: Color |
|
| 1033 |
) -> some View {
|
|
| 1034 |
GeometryReader { geometry in
|
|
| 1035 |
let footerHeight: CGFloat = isLargeDisplay ? 30 : 24 |
|
| 1036 |
let topInset: CGFloat = isLargeDisplay ? 34 : 28 |
|
| 1037 |
let labelAreaHeight = max(geometry.size.height - footerHeight - topInset, 1) |
|
| 1038 | ||
| 1039 |
ZStack(alignment: .top) {
|
|
| 1040 |
ForEach(0..<yLabels, id: \.self) { row in
|
|
| 1041 |
let labelIndex = yLabels - row |
|
| 1042 | ||
| 1043 |
Text("\(context.yAxisLabel(for: labelIndex, of: yLabels).format(fractionDigits: 1))")
|
|
| 1044 |
.font((isLargeDisplay ? Font.callout : .footnote).weight(.semibold)) |
|
| 1045 |
.monospacedDigit() |
|
| 1046 |
.lineLimit(1) |
|
| 1047 |
.minimumScaleFactor(0.8) |
|
| 1048 |
.frame(width: max(geometry.size.width - 10, 0)) |
|
| 1049 |
.position( |
|
| 1050 |
x: geometry.size.width / 2, |
|
| 1051 |
y: topInset + yGuidePosition( |
|
| 1052 |
for: labelIndex, |
|
| 1053 |
context: context, |
|
| 1054 |
height: labelAreaHeight |
|
| 1055 |
) |
|
| 1056 |
) |
|
| 1057 |
} |
|
| 1058 | ||
| 1059 |
Text(measurementUnit) |
|
| 1060 |
.font((isLargeDisplay ? Font.footnote : .caption2).weight(.bold)) |
|
| 1061 |
.foregroundColor(tint) |
|
| 1062 |
.padding(.horizontal, isLargeDisplay ? 8 : 6) |
|
| 1063 |
.padding(.vertical, isLargeDisplay ? 5 : 4) |
|
| 1064 |
.background( |
|
| 1065 |
Capsule(style: .continuous) |
|
| 1066 |
.fill(tint.opacity(0.14)) |
|
| 1067 |
) |
|
| 1068 |
.padding(.top, 8) |
|
| 1069 | ||
| 1070 |
VStack {
|
|
| 1071 |
Spacer(minLength: 0) |
|
| 1072 | ||
| 1073 |
HStack(spacing: 6) {
|
|
| 1074 |
Text("Y \(Int(displayedLowerBoundForSeries(seriesKind)))")
|
|
| 1075 |
.font((isLargeDisplay ? Font.callout : .caption2).weight(.semibold)) |
|
| 1076 |
.foregroundColor(.secondary) |
|
| 1077 |
Spacer(minLength: 0) |
|
| 1078 |
} |
|
| 1079 |
.padding(.horizontal, 6) |
|
| 1080 |
.padding(.vertical, 6) |
|
| 1081 |
.background( |
|
| 1082 |
Capsule(style: .continuous) |
|
| 1083 |
.fill(Color.primary.opacity(0.06)) |
|
| 1084 |
) |
|
| 1085 |
.padding(.horizontal, 4) |
|
| 1086 |
.padding(.bottom, 4) |
|
| 1087 |
} |
|
| 1088 |
} |
|
| 1089 |
} |
|
| 1090 |
.frame(height: height) |
|
| 1091 |
.background( |
|
| 1092 |
RoundedRectangle(cornerRadius: 16, style: .continuous) |
|
| 1093 |
.fill(tint.opacity(0.12)) |
|
| 1094 |
) |
|
| 1095 |
.overlay( |
|
| 1096 |
RoundedRectangle(cornerRadius: 16, style: .continuous) |
|
| 1097 |
.stroke(tint.opacity(0.20), lineWidth: 1) |
|
| 1098 |
) |
|
| 1099 |
.contentShape(RoundedRectangle(cornerRadius: 16, style: .continuous)) |
|
| 1100 |
.gesture( |
|
| 1101 |
DragGesture(minimumDistance: 0) |
|
| 1102 |
.onEnded { value in
|
|
| 1103 |
handleAxisTap(locationY: value.location.y, totalHeight: height, kind: seriesKind) |
|
| 1104 |
} |
|
| 1105 |
) |
|
| 1106 |
} |
|
| 1107 | ||
| 1108 |
fileprivate func horizontalGuides(context: ChartContext) -> some View {
|
|
| 1109 |
GeometryReader { geometry in
|
|
| 1110 |
Path { path in
|
|
| 1111 |
for labelIndex in 1...self.yLabels {
|
|
| 1112 |
let y = yGuidePosition( |
|
| 1113 |
for: labelIndex, |
|
| 1114 |
context: context, |
|
| 1115 |
height: geometry.size.height |
|
| 1116 |
) |
|
| 1117 |
path.addLine(from: CGPoint(x: 0, y: y), to: CGPoint(x: geometry.size.width, y: y)) |
|
| 1118 |
} |
|
| 1119 |
} |
|
| 1120 |
.stroke(Color.secondary.opacity(0.38), lineWidth: 0.85) |
|
| 1121 |
} |
|
| 1122 |
} |
|
| 1123 | ||
| 1124 |
fileprivate func verticalGuides(context: ChartContext) -> some View {
|
|
| 1125 |
GeometryReader { geometry in
|
|
| 1126 |
Path { path in
|
|
| 1127 | ||
| 1128 |
for labelIndex in 2..<self.xLabels {
|
|
| 1129 |
let x = xGuidePosition( |
|
| 1130 |
for: labelIndex, |
|
| 1131 |
context: context, |
|
| 1132 |
width: geometry.size.width |
|
| 1133 |
) |
|
| 1134 |
path.move(to: CGPoint(x: x, y: 0) ) |
|
| 1135 |
path.addLine(to: CGPoint(x: path.currentPoint!.x, y: geometry.size.height) ) |
|
| 1136 |
} |
|
| 1137 |
} |
|
| 1138 |
.stroke(Color.secondary.opacity(0.34), style: StrokeStyle(lineWidth: 0.8, dash: [4, 4])) |
|
| 1139 |
} |
|
| 1140 |
} |
|
| 1141 | ||
| 1142 |
fileprivate func discontinuityMarkers( |
|
| 1143 |
points: [Measurements.Measurement.Point], |
|
| 1144 |
context: ChartContext |
|
| 1145 |
) -> some View {
|
|
| 1146 |
GeometryReader { geometry in
|
|
| 1147 |
Path { path in
|
|
| 1148 |
for point in points where point.isDiscontinuity {
|
|
| 1149 |
let markerX = context.placeInRect( |
|
| 1150 |
point: CGPoint( |
|
| 1151 |
x: point.timestamp.timeIntervalSince1970, |
|
| 1152 |
y: context.origin.y |
|
| 1153 |
) |
|
| 1154 |
).x * geometry.size.width |
|
| 1155 |
path.move(to: CGPoint(x: markerX, y: 0)) |
|
| 1156 |
path.addLine(to: CGPoint(x: markerX, y: geometry.size.height)) |
|
| 1157 |
} |
|
| 1158 |
} |
|
| 1159 |
.stroke(Color.orange.opacity(0.75), style: StrokeStyle(lineWidth: 1, dash: [5, 4])) |
|
| 1160 |
} |
|
| 1161 |
} |
|
| 1162 | ||
| 1163 |
} |
|
| 1164 | ||
| 1165 |
struct Chart : View {
|
|
| 1166 | ||
| 1167 |
let points: [Measurements.Measurement.Point] |
|
| 1168 |
let context: ChartContext |
|
| 1169 |
var areaChart: Bool = false |
|
| 1170 |
var strokeColor: Color = .black |
|
| 1171 | ||
| 1172 |
var body : some View {
|
|
| 1173 |
GeometryReader { geometry in
|
|
| 1174 |
if self.areaChart {
|
|
| 1175 |
self.path( geometry: geometry ) |
|
| 1176 |
.fill(LinearGradient( gradient: .init(colors: [Color.red, Color.green]), startPoint: .init(x: 0.5, y: 0.1), endPoint: .init(x: 0.5, y: 0.9))) |
|
| 1177 |
} else {
|
|
| 1178 |
self.path( geometry: geometry ) |
|
| 1179 |
.stroke(self.strokeColor, style: StrokeStyle(lineWidth: 2, lineCap: .round, lineJoin: .round)) |
|
| 1180 |
} |
|
| 1181 |
} |
|
| 1182 |
} |
|
| 1183 | ||
| 1184 |
fileprivate func path(geometry: GeometryProxy) -> Path {
|
|
| 1185 |
return Path { path in
|
|
| 1186 |
var firstSample: Measurements.Measurement.Point? |
|
| 1187 |
var lastSample: Measurements.Measurement.Point? |
|
| 1188 |
var needsMove = true |
|
| 1189 | ||
| 1190 |
for point in points {
|
|
| 1191 |
if point.isDiscontinuity {
|
|
| 1192 |
needsMove = true |
|
| 1193 |
continue |
|
| 1194 |
} |
|
| 1195 | ||
| 1196 |
let item = context.placeInRect(point: point.point()) |
|
| 1197 |
let renderedPoint = CGPoint( |
|
| 1198 |
x: item.x * geometry.size.width, |
|
| 1199 |
y: item.y * geometry.size.height |
|
| 1200 |
) |
|
| 1201 | ||
| 1202 |
if firstSample == nil {
|
|
| 1203 |
firstSample = point |
|
| 1204 |
} |
|
| 1205 |
lastSample = point |
|
| 1206 | ||
| 1207 |
if needsMove {
|
|
| 1208 |
path.move(to: renderedPoint) |
|
| 1209 |
needsMove = false |
|
| 1210 |
} else {
|
|
| 1211 |
path.addLine(to: renderedPoint) |
|
| 1212 |
} |
|
| 1213 |
} |
|
| 1214 | ||
| 1215 |
if self.areaChart, let firstSample, let lastSample {
|
|
| 1216 |
let lastPointX = context.placeInRect(point: CGPoint(x: lastSample.point().x, y: context.origin.y )) |
|
| 1217 |
let firstPointX = context.placeInRect(point: CGPoint(x: firstSample.point().x, y: context.origin.y )) |
|
| 1218 |
path.addLine(to: CGPoint(x: lastPointX.x * geometry.size.width, y: lastPointX.y * geometry.size.height ) ) |
|
| 1219 |
path.addLine(to: CGPoint(x: firstPointX.x * geometry.size.width, y: firstPointX.y * geometry.size.height ) ) |
|
| 1220 |
// MARK: Nu e nevoie. Fill inchide automat calea |
|
| 1221 |
// path.closeSubpath() |
|
| 1222 |
} |
|
| 1223 |
} |
|
| 1224 |
} |
|
| 1225 | ||
| 1226 |
} |