Newer
■
■
■
■
■
■
■
■
■
■
Older
1069 lines
|
38.388kb
| 1 |
// |
|
| 2 |
// MeasurementChartView.swift |
|
| 3 |
// USB Meter |
|
| 4 |
// |
|
| 5 |
// Created by Bogdan Timofte on 06/05/2020. |
|
| 6 |
// Copyright © 2020 Bogdan Timofte. All rights reserved. |
|
| 7 |
// |
|
| 8 | ||
| 9 |
import SwiftUI |
|
| 10 | ||
| 11 |
struct MeasurementChartView: View {
|
|
| 12 |
private enum SeriesKind {
|
|
| 13 |
case power |
|
| 14 |
case voltage |
|
| 15 |
case current |
|
| 16 | ||
| 17 |
var unit: String {
|
|
| 18 |
switch self {
|
|
| 19 |
case .power: return "W" |
|
| 20 |
case .voltage: return "V" |
|
| 21 |
case .current: return "A" |
|
| 22 |
} |
|
| 23 |
} |
|
| 24 | ||
| 25 |
var tint: Color {
|
|
| 26 |
switch self {
|
|
| 27 |
case .power: return .red |
|
| 28 |
case .voltage: return .green |
|
| 29 |
case .current: return .blue |
|
| 30 |
} |
|
| 31 |
} |
|
| 32 |
} |
|
| 33 | ||
| 34 |
private struct SeriesData {
|
|
| 35 |
let kind: SeriesKind |
|
| 36 |
let points: [Measurements.Measurement.Point] |
|
| 37 |
let samplePoints: [Measurements.Measurement.Point] |
|
| 38 |
let context: ChartContext |
|
| 39 |
let autoLowerBound: Double |
|
| 40 |
let autoUpperBound: Double |
|
| 41 |
let maximumSampleValue: Double? |
|
| 42 |
} |
|
| 43 | ||
| 44 |
private let minimumTimeSpan: TimeInterval = 1 |
|
| 45 |
private let minimumVoltageSpan = 0.5 |
|
| 46 |
private let minimumCurrentSpan = 0.5 |
|
| 47 |
private let minimumPowerSpan = 0.5 |
|
| 48 |
private let axisSwipeThreshold: CGFloat = 12 |
|
| 49 |
private let defaultEmptyChartTimeSpan: TimeInterval = 60 |
|
| 50 | ||
| 51 |
let compactLayout: Bool |
|
| 52 |
let availableSize: CGSize |
|
| 53 | ||
| 54 |
@EnvironmentObject private var measurements: Measurements |
|
| 55 |
@Environment(\.horizontalSizeClass) private var horizontalSizeClass |
|
| 56 |
@Environment(\.verticalSizeClass) private var verticalSizeClass |
|
| 57 |
var timeRange: ClosedRange<Date>? = nil |
|
| 58 | ||
| 59 |
@State var displayVoltage: Bool = false |
|
| 60 |
@State var displayCurrent: Bool = false |
|
| 61 |
@State var displayPower: Bool = true |
|
| 62 |
@State private var showResetConfirmation: Bool = false |
|
| 63 |
@State private var chartNow: Date = Date() |
|
| 64 |
@State private var pinOrigin: Bool = false |
|
| 65 |
@State private var useSharedOrigin: Bool = false |
|
| 66 |
@State private var sharedAxisOrigin: Double = 0 |
|
| 67 |
@State private var powerAxisOrigin: Double = 0 |
|
| 68 |
@State private var voltageAxisOrigin: Double = 0 |
|
| 69 |
@State private var currentAxisOrigin: Double = 0 |
|
| 70 |
let xLabels: Int = 4 |
|
| 71 |
let yLabels: Int = 4 |
|
| 72 | ||
| 73 |
init( |
|
| 74 |
compactLayout: Bool = false, |
|
| 75 |
availableSize: CGSize = .zero, |
|
| 76 |
timeRange: ClosedRange<Date>? = nil |
|
| 77 |
) {
|
|
| 78 |
self.compactLayout = compactLayout |
|
| 79 |
self.availableSize = availableSize |
|
| 80 |
self.timeRange = timeRange |
|
| 81 |
} |
|
| 82 | ||
| 83 |
private var axisColumnWidth: CGFloat {
|
|
| 84 |
compactLayout ? 38 : 46 |
|
| 85 |
} |
|
| 86 | ||
| 87 |
private var chartSectionSpacing: CGFloat {
|
|
| 88 |
compactLayout ? 6 : 8 |
|
| 89 |
} |
|
| 90 | ||
| 91 |
private var xAxisHeight: CGFloat {
|
|
| 92 |
compactLayout ? 24 : 28 |
|
| 93 |
} |
|
| 94 | ||
| 95 |
private var plotSectionHeight: CGFloat {
|
|
| 96 |
if availableSize == .zero {
|
|
| 97 |
return compactLayout ? 260 : 340 |
|
| 98 |
} |
|
| 99 | ||
| 100 |
if compactLayout {
|
|
| 101 |
return min(max(availableSize.height * 0.36, 240), 300) |
|
| 102 |
} |
|
| 103 | ||
| 104 |
return min(max(availableSize.height * 0.5, 300), 440) |
|
| 105 |
} |
|
| 106 | ||
| 107 |
private var stackedToolbarLayout: Bool {
|
|
| 108 |
if availableSize.width > 0 {
|
|
| 109 |
return availableSize.width < 640 |
|
| 110 |
} |
|
| 111 | ||
| 112 |
return horizontalSizeClass == .compact && verticalSizeClass != .compact |
|
| 113 |
} |
|
| 114 | ||
| 115 |
private var showsLabeledOriginControls: Bool {
|
|
| 116 |
!compactLayout && !stackedToolbarLayout |
|
| 117 |
} |
|
| 118 | ||
| 119 |
var body: some View {
|
|
| 120 |
let powerSeries = series(for: measurements.power, kind: .power, minimumYSpan: minimumPowerSpan) |
|
| 121 |
let voltageSeries = series(for: measurements.voltage, kind: .voltage, minimumYSpan: minimumVoltageSpan) |
|
| 122 |
let currentSeries = series(for: measurements.current, kind: .current, minimumYSpan: minimumCurrentSpan) |
|
| 123 |
let primarySeries = displayedPrimarySeries( |
|
| 124 |
powerSeries: powerSeries, |
|
| 125 |
voltageSeries: voltageSeries, |
|
| 126 |
currentSeries: currentSeries |
|
| 127 |
) |
|
| 128 | ||
| 129 |
Group {
|
|
| 130 |
if let primarySeries {
|
|
| 131 |
VStack(alignment: .leading, spacing: 12) {
|
|
| 132 |
chartToggleBar( |
|
| 133 |
voltageSeries: voltageSeries, |
|
| 134 |
currentSeries: currentSeries |
|
| 135 |
) |
|
| 136 | ||
| 137 |
GeometryReader { geometry in
|
|
| 138 |
let plotHeight = max(geometry.size.height - xAxisHeight, compactLayout ? 180 : 220) |
|
| 139 | ||
| 140 |
VStack(spacing: 6) {
|
|
| 141 |
HStack(spacing: chartSectionSpacing) {
|
|
| 142 |
primaryAxisView( |
|
| 143 |
height: plotHeight, |
|
| 144 |
powerSeries: powerSeries, |
|
| 145 |
voltageSeries: voltageSeries, |
|
| 146 |
currentSeries: currentSeries |
|
| 147 |
) |
|
| 148 |
.frame(width: axisColumnWidth, height: plotHeight) |
|
| 149 | ||
| 150 |
ZStack {
|
|
| 151 |
RoundedRectangle(cornerRadius: 18, style: .continuous) |
|
| 152 |
.fill(Color.primary.opacity(0.05)) |
|
| 153 | ||
| 154 |
RoundedRectangle(cornerRadius: 18, style: .continuous) |
|
| 155 |
.stroke(Color.secondary.opacity(0.16), lineWidth: 1) |
|
| 156 | ||
| 157 |
horizontalGuides(context: primarySeries.context) |
|
| 158 |
verticalGuides(context: primarySeries.context) |
|
| 159 |
discontinuityMarkers(points: primarySeries.points, context: primarySeries.context) |
|
| 160 |
renderedChart( |
|
| 161 |
powerSeries: powerSeries, |
|
| 162 |
voltageSeries: voltageSeries, |
|
| 163 |
currentSeries: currentSeries |
|
| 164 |
) |
|
| 165 |
} |
|
| 166 |
.clipShape(RoundedRectangle(cornerRadius: 18, style: .continuous)) |
|
| 167 |
.frame(maxWidth: .infinity) |
|
| 168 |
.frame(height: plotHeight) |
|
| 169 | ||
| 170 |
secondaryAxisView( |
|
| 171 |
height: plotHeight, |
|
| 172 |
powerSeries: powerSeries, |
|
| 173 |
voltageSeries: voltageSeries, |
|
| 174 |
currentSeries: currentSeries |
|
| 175 |
) |
|
| 176 |
.frame(width: axisColumnWidth, height: plotHeight) |
|
| 177 |
} |
|
| 178 | ||
| 179 |
xAxisLabelsView(context: primarySeries.context) |
|
| 180 |
.frame(height: xAxisHeight) |
|
| 181 |
} |
|
| 182 |
.frame(maxWidth: .infinity, maxHeight: .infinity, alignment: .top) |
|
| 183 |
} |
|
| 184 |
.frame(height: plotSectionHeight) |
|
| 185 |
} |
|
| 186 |
} else {
|
|
| 187 |
VStack(alignment: .leading, spacing: 12) {
|
|
| 188 |
chartToggleBar( |
|
| 189 |
voltageSeries: voltageSeries, |
|
| 190 |
currentSeries: currentSeries |
|
| 191 |
) |
|
| 192 |
Text("Select at least one measurement series.")
|
|
| 193 |
.foregroundColor(.secondary) |
|
| 194 |
} |
|
| 195 |
} |
|
| 196 |
} |
|
| 197 |
.font(.footnote) |
|
| 198 |
.frame(maxWidth: .infinity, maxHeight: .infinity, alignment: .topLeading) |
|
| 199 |
.onReceive(Timer.publish(every: 1, on: .main, in: .common).autoconnect()) { now in
|
|
| 200 |
guard timeRange == nil else { return }
|
|
| 201 |
chartNow = now |
|
| 202 |
} |
|
| 203 |
} |
|
| 204 | ||
| 205 |
private func chartToggleBar( |
|
| 206 |
voltageSeries: SeriesData, |
|
| 207 |
currentSeries: SeriesData |
|
| 208 |
) -> some View {
|
|
| 209 |
let condensedLayout = compactLayout || verticalSizeClass == .compact |
|
| 210 | ||
| 211 |
return VStack(alignment: .leading, spacing: condensedLayout ? 8 : 10) {
|
|
| 212 |
seriesToggleRow(condensedLayout: condensedLayout) |
|
| 213 | ||
| 214 |
if stackedToolbarLayout {
|
|
| 215 |
HStack(alignment: .center, spacing: 10) {
|
|
| 216 |
originControlsRow( |
|
| 217 |
voltageSeries: voltageSeries, |
|
| 218 |
currentSeries: currentSeries, |
|
| 219 |
condensedLayout: condensedLayout |
|
| 220 |
) |
|
| 221 | ||
| 222 |
Spacer(minLength: 0) |
|
| 223 | ||
| 224 |
resetBufferButton(condensedLayout: condensedLayout) |
|
| 225 |
} |
|
| 226 |
} else {
|
|
| 227 |
HStack(alignment: .center, spacing: 16) {
|
|
| 228 |
originControlsRow( |
|
| 229 |
voltageSeries: voltageSeries, |
|
| 230 |
currentSeries: currentSeries, |
|
| 231 |
condensedLayout: condensedLayout |
|
| 232 |
) |
|
| 233 | ||
| 234 |
Spacer(minLength: 0) |
|
| 235 | ||
| 236 |
resetBufferButton(condensedLayout: condensedLayout) |
|
| 237 |
} |
|
| 238 |
} |
|
| 239 |
} |
|
| 240 |
.frame(maxWidth: .infinity, alignment: .leading) |
|
| 241 |
} |
|
| 242 | ||
| 243 |
private func seriesToggleRow(condensedLayout: Bool) -> some View {
|
|
| 244 |
HStack(spacing: condensedLayout ? 6 : 8) {
|
|
| 245 |
seriesToggleButton(title: "Voltage", isOn: displayVoltage, condensedLayout: condensedLayout) {
|
|
| 246 |
displayVoltage.toggle() |
|
| 247 |
if displayVoltage {
|
|
| 248 |
displayPower = false |
|
| 249 |
} |
|
| 250 |
} |
|
| 251 | ||
| 252 |
seriesToggleButton(title: "Current", isOn: displayCurrent, condensedLayout: condensedLayout) {
|
|
| 253 |
displayCurrent.toggle() |
|
| 254 |
if displayCurrent {
|
|
| 255 |
displayPower = false |
|
| 256 |
} |
|
| 257 |
} |
|
| 258 | ||
| 259 |
seriesToggleButton(title: "Power", isOn: displayPower, condensedLayout: condensedLayout) {
|
|
| 260 |
displayPower.toggle() |
|
| 261 |
if displayPower {
|
|
| 262 |
displayCurrent = false |
|
| 263 |
displayVoltage = false |
|
| 264 |
} |
|
| 265 |
} |
|
| 266 |
} |
|
| 267 |
} |
|
| 268 | ||
| 269 |
private func originControlsRow( |
|
| 270 |
voltageSeries: SeriesData, |
|
| 271 |
currentSeries: SeriesData, |
|
| 272 |
condensedLayout: Bool |
|
| 273 |
) -> some View {
|
|
| 274 |
HStack(spacing: condensedLayout ? 8 : 10) {
|
|
| 275 |
symbolControlChip( |
|
| 276 |
systemImage: "equal.circle", |
|
| 277 |
enabled: supportsSharedOrigin, |
|
| 278 |
active: useSharedOrigin && supportsSharedOrigin, |
|
| 279 |
condensedLayout: condensedLayout, |
|
| 280 |
showsLabel: showsLabeledOriginControls, |
|
| 281 |
label: "Match Y Origin", |
|
| 282 |
accessibilityLabel: "Match Y origin" |
|
| 283 |
) {
|
|
| 284 |
toggleSharedOrigin( |
|
| 285 |
voltageSeries: voltageSeries, |
|
| 286 |
currentSeries: currentSeries |
|
| 287 |
) |
|
| 288 |
} |
|
| 289 | ||
| 290 |
symbolControlChip( |
|
| 291 |
systemImage: pinOrigin ? "pin.fill" : "pin.slash", |
|
| 292 |
enabled: true, |
|
| 293 |
active: pinOrigin, |
|
| 294 |
condensedLayout: condensedLayout, |
|
| 295 |
showsLabel: showsLabeledOriginControls, |
|
| 296 |
label: pinOrigin ? "Origin Locked" : "Origin Auto", |
|
| 297 |
accessibilityLabel: pinOrigin ? "Unlock origin" : "Lock origin" |
|
| 298 |
) {
|
|
| 299 |
togglePinnedOrigin( |
|
| 300 |
voltageSeries: voltageSeries, |
|
| 301 |
currentSeries: currentSeries |
|
| 302 |
) |
|
| 303 |
} |
|
| 304 | ||
| 305 |
symbolControlChip( |
|
| 306 |
systemImage: "0.circle", |
|
| 307 |
enabled: true, |
|
| 308 |
active: pinnedOriginIsZero, |
|
| 309 |
condensedLayout: condensedLayout, |
|
| 310 |
showsLabel: showsLabeledOriginControls, |
|
| 311 |
label: "Origin 0", |
|
| 312 |
accessibilityLabel: "Set origin to zero" |
|
| 313 |
) {
|
|
| 314 |
setVisibleOriginsToZero() |
|
| 315 |
} |
|
| 316 |
} |
|
| 317 |
} |
|
| 318 | ||
| 319 |
private func seriesToggleButton( |
|
| 320 |
title: String, |
|
| 321 |
isOn: Bool, |
|
| 322 |
condensedLayout: Bool, |
|
| 323 |
action: @escaping () -> Void |
|
| 324 |
) -> some View {
|
|
| 325 |
Button(action: action) {
|
|
| 326 |
Text(title) |
|
| 327 |
.font((condensedLayout ? Font.callout : .body).weight(.semibold)) |
|
| 328 |
.lineLimit(1) |
|
| 329 |
.minimumScaleFactor(0.82) |
|
| 330 |
.foregroundColor(isOn ? .white : .blue) |
|
| 331 |
.padding(.horizontal, condensedLayout ? 10 : 12) |
|
| 332 |
.padding(.vertical, condensedLayout ? 7 : 8) |
|
| 333 |
.frame(minWidth: condensedLayout ? 0 : 84) |
|
| 334 |
.frame(maxWidth: stackedToolbarLayout ? .infinity : nil) |
|
| 335 |
.background( |
|
| 336 |
RoundedRectangle(cornerRadius: condensedLayout ? 13 : 15, style: .continuous) |
|
| 337 |
.fill(isOn ? Color.blue.opacity(0.88) : Color.blue.opacity(0.12)) |
|
| 338 |
) |
|
| 339 |
.overlay( |
|
| 340 |
RoundedRectangle(cornerRadius: condensedLayout ? 13 : 15, style: .continuous) |
|
| 341 |
.stroke(Color.blue, lineWidth: 1.5) |
|
| 342 |
) |
|
| 343 |
} |
|
| 344 |
.buttonStyle(.plain) |
|
| 345 |
} |
|
| 346 | ||
| 347 |
private func symbolControlChip( |
|
| 348 |
systemImage: String, |
|
| 349 |
enabled: Bool, |
|
| 350 |
active: Bool, |
|
| 351 |
condensedLayout: Bool, |
|
| 352 |
showsLabel: Bool, |
|
| 353 |
label: String, |
|
| 354 |
accessibilityLabel: String, |
|
| 355 |
action: @escaping () -> Void |
|
| 356 |
) -> some View {
|
|
| 357 |
Button(action: {
|
|
| 358 |
action() |
|
| 359 |
}) {
|
|
| 360 |
Group {
|
|
| 361 |
if showsLabel {
|
|
| 362 |
Label(label, systemImage: systemImage) |
|
| 363 |
.font((condensedLayout ? Font.callout : .footnote).weight(.semibold)) |
|
| 364 |
.padding(.horizontal, condensedLayout ? 10 : 12) |
|
| 365 |
.padding(.vertical, condensedLayout ? 7 : 8) |
|
| 366 |
} else {
|
|
| 367 |
Image(systemName: systemImage) |
|
| 368 |
.font(.system(size: condensedLayout ? 15 : 16, weight: .semibold)) |
|
| 369 |
.frame(width: condensedLayout ? 34 : 38, height: condensedLayout ? 34 : 38) |
|
| 370 |
} |
|
| 371 |
} |
|
| 372 |
.background( |
|
| 373 |
Capsule(style: .continuous) |
|
| 374 |
.fill(active ? Color.orange.opacity(0.18) : Color.secondary.opacity(0.10)) |
|
| 375 |
) |
|
| 376 |
} |
|
| 377 |
.buttonStyle(.plain) |
|
| 378 |
.foregroundColor(enabled ? .primary : .secondary) |
|
| 379 |
.opacity(enabled ? 1 : 0.55) |
|
| 380 |
.accessibilityLabel(accessibilityLabel) |
|
| 381 |
} |
|
| 382 | ||
| 383 |
private func resetBufferButton(condensedLayout: Bool) -> some View {
|
|
| 384 |
Button(action: {
|
|
| 385 |
showResetConfirmation = true |
|
| 386 |
}) {
|
|
| 387 |
Label(condensedLayout ? "Reset" : "Reset Buffer", systemImage: "trash") |
|
| 388 |
.font((condensedLayout ? Font.callout : .footnote).weight(.semibold)) |
|
| 389 |
.padding(.horizontal, condensedLayout ? 14 : 16) |
|
| 390 |
.padding(.vertical, condensedLayout ? 10 : 11) |
|
| 391 |
} |
|
| 392 |
.buttonStyle(.plain) |
|
| 393 |
.foregroundColor(.white) |
|
| 394 |
.background( |
|
| 395 |
Capsule(style: .continuous) |
|
| 396 |
.fill(Color.red.opacity(0.8)) |
|
| 397 |
) |
|
| 398 |
.fixedSize(horizontal: true, vertical: false) |
|
| 399 |
.confirmationDialog("Reset captured measurements?", isPresented: $showResetConfirmation, titleVisibility: .visible) {
|
|
| 400 |
Button("Reset series", role: .destructive) {
|
|
| 401 |
measurements.resetSeries() |
|
| 402 |
} |
|
| 403 |
Button("Cancel", role: .cancel) {}
|
|
| 404 |
} |
|
| 405 |
} |
|
| 406 | ||
| 407 |
@ViewBuilder |
|
| 408 |
private func primaryAxisView( |
|
| 409 |
height: CGFloat, |
|
| 410 |
powerSeries: SeriesData, |
|
| 411 |
voltageSeries: SeriesData, |
|
| 412 |
currentSeries: SeriesData |
|
| 413 |
) -> some View {
|
|
| 414 |
if displayPower {
|
|
| 415 |
yAxisLabelsView( |
|
| 416 |
height: height, |
|
| 417 |
context: powerSeries.context, |
|
| 418 |
seriesKind: .power, |
|
| 419 |
measurementUnit: powerSeries.kind.unit, |
|
| 420 |
tint: powerSeries.kind.tint |
|
| 421 |
) |
|
| 422 |
} else if displayVoltage {
|
|
| 423 |
yAxisLabelsView( |
|
| 424 |
height: height, |
|
| 425 |
context: voltageSeries.context, |
|
| 426 |
seriesKind: .voltage, |
|
| 427 |
measurementUnit: voltageSeries.kind.unit, |
|
| 428 |
tint: voltageSeries.kind.tint |
|
| 429 |
) |
|
| 430 |
} else if displayCurrent {
|
|
| 431 |
yAxisLabelsView( |
|
| 432 |
height: height, |
|
| 433 |
context: currentSeries.context, |
|
| 434 |
seriesKind: .current, |
|
| 435 |
measurementUnit: currentSeries.kind.unit, |
|
| 436 |
tint: currentSeries.kind.tint |
|
| 437 |
) |
|
| 438 |
} |
|
| 439 |
} |
|
| 440 | ||
| 441 |
@ViewBuilder |
|
| 442 |
private func renderedChart( |
|
| 443 |
powerSeries: SeriesData, |
|
| 444 |
voltageSeries: SeriesData, |
|
| 445 |
currentSeries: SeriesData |
|
| 446 |
) -> some View {
|
|
| 447 |
if self.displayPower {
|
|
| 448 |
Chart(points: powerSeries.points, context: powerSeries.context, strokeColor: .red) |
|
| 449 |
.opacity(0.72) |
|
| 450 |
} else {
|
|
| 451 |
if self.displayVoltage {
|
|
| 452 |
Chart(points: voltageSeries.points, context: voltageSeries.context, strokeColor: .green) |
|
| 453 |
.opacity(0.78) |
|
| 454 |
} |
|
| 455 |
if self.displayCurrent {
|
|
| 456 |
Chart(points: currentSeries.points, context: currentSeries.context, strokeColor: .blue) |
|
| 457 |
.opacity(0.78) |
|
| 458 |
} |
|
| 459 |
} |
|
| 460 |
} |
|
| 461 | ||
| 462 |
@ViewBuilder |
|
| 463 |
private func secondaryAxisView( |
|
| 464 |
height: CGFloat, |
|
| 465 |
powerSeries: SeriesData, |
|
| 466 |
voltageSeries: SeriesData, |
|
| 467 |
currentSeries: SeriesData |
|
| 468 |
) -> some View {
|
|
| 469 |
if displayVoltage && displayCurrent {
|
|
| 470 |
yAxisLabelsView( |
|
| 471 |
height: height, |
|
| 472 |
context: currentSeries.context, |
|
| 473 |
seriesKind: .current, |
|
| 474 |
measurementUnit: currentSeries.kind.unit, |
|
| 475 |
tint: currentSeries.kind.tint |
|
| 476 |
) |
|
| 477 |
} else {
|
|
| 478 |
primaryAxisView( |
|
| 479 |
height: height, |
|
| 480 |
powerSeries: powerSeries, |
|
| 481 |
voltageSeries: voltageSeries, |
|
| 482 |
currentSeries: currentSeries |
|
| 483 |
) |
|
| 484 |
} |
|
| 485 |
} |
|
| 486 | ||
| 487 |
private func displayedPrimarySeries( |
|
| 488 |
powerSeries: SeriesData, |
|
| 489 |
voltageSeries: SeriesData, |
|
| 490 |
currentSeries: SeriesData |
|
| 491 |
) -> SeriesData? {
|
|
| 492 |
if displayPower {
|
|
| 493 |
return powerSeries |
|
| 494 |
} |
|
| 495 |
if displayVoltage {
|
|
| 496 |
return voltageSeries |
|
| 497 |
} |
|
| 498 |
if displayCurrent {
|
|
| 499 |
return currentSeries |
|
| 500 |
} |
|
| 501 |
return nil |
|
| 502 |
} |
|
| 503 | ||
| 504 |
private func series( |
|
| 505 |
for measurement: Measurements.Measurement, |
|
| 506 |
kind: SeriesKind, |
|
| 507 |
minimumYSpan: Double |
|
| 508 |
) -> SeriesData {
|
|
| 509 |
let points = measurement.points.filter { point in
|
|
| 510 |
guard let timeRange else { return true }
|
|
| 511 |
return timeRange.contains(point.timestamp) |
|
| 512 |
} |
|
| 513 |
let samplePoints = points.filter { $0.isSample }
|
|
| 514 |
let context = ChartContext() |
|
| 515 | ||
| 516 |
let autoBounds = automaticYBounds( |
|
| 517 |
for: samplePoints, |
|
| 518 |
minimumYSpan: minimumYSpan |
|
| 519 |
) |
|
| 520 |
let xBounds = xBounds(for: samplePoints) |
|
| 521 |
let lowerBound = resolvedLowerBound( |
|
| 522 |
for: kind, |
|
| 523 |
autoLowerBound: autoBounds.lowerBound |
|
| 524 |
) |
|
| 525 |
let upperBound = resolvedUpperBound( |
|
| 526 |
for: kind, |
|
| 527 |
lowerBound: lowerBound, |
|
| 528 |
autoUpperBound: autoBounds.upperBound, |
|
| 529 |
maximumSampleValue: samplePoints.map(\.value).max(), |
|
| 530 |
minimumYSpan: minimumYSpan |
|
| 531 |
) |
|
| 532 | ||
| 533 |
context.setBounds( |
|
| 534 |
xMin: CGFloat(xBounds.lowerBound.timeIntervalSince1970), |
|
| 535 |
xMax: CGFloat(xBounds.upperBound.timeIntervalSince1970), |
|
| 536 |
yMin: CGFloat(lowerBound), |
|
| 537 |
yMax: CGFloat(upperBound) |
|
| 538 |
) |
|
| 539 | ||
| 540 |
return SeriesData( |
|
| 541 |
kind: kind, |
|
| 542 |
points: points, |
|
| 543 |
samplePoints: samplePoints, |
|
| 544 |
context: context, |
|
| 545 |
autoLowerBound: autoBounds.lowerBound, |
|
| 546 |
autoUpperBound: autoBounds.upperBound, |
|
| 547 |
maximumSampleValue: samplePoints.map(\.value).max() |
|
| 548 |
) |
|
| 549 |
} |
|
| 550 | ||
| 551 |
private var supportsSharedOrigin: Bool {
|
|
| 552 |
displayVoltage && displayCurrent && !displayPower |
|
| 553 |
} |
|
| 554 | ||
| 555 |
private var pinnedOriginIsZero: Bool {
|
|
| 556 |
if useSharedOrigin && supportsSharedOrigin {
|
|
| 557 |
return pinOrigin && sharedAxisOrigin == 0 |
|
| 558 |
} |
|
| 559 | ||
| 560 |
if displayPower {
|
|
| 561 |
return pinOrigin && powerAxisOrigin == 0 |
|
| 562 |
} |
|
| 563 | ||
| 564 |
let visibleOrigins = [ |
|
| 565 |
displayVoltage ? voltageAxisOrigin : nil, |
|
| 566 |
displayCurrent ? currentAxisOrigin : nil |
|
| 567 |
] |
|
| 568 |
.compactMap { $0 }
|
|
| 569 | ||
| 570 |
guard !visibleOrigins.isEmpty else { return false }
|
|
| 571 |
return pinOrigin && visibleOrigins.allSatisfy { $0 == 0 }
|
|
| 572 |
} |
|
| 573 | ||
| 574 |
private func toggleSharedOrigin( |
|
| 575 |
voltageSeries: SeriesData, |
|
| 576 |
currentSeries: SeriesData |
|
| 577 |
) {
|
|
| 578 |
guard supportsSharedOrigin else { return }
|
|
| 579 | ||
| 580 |
if useSharedOrigin {
|
|
| 581 |
useSharedOrigin = false |
|
| 582 |
return |
|
| 583 |
} |
|
| 584 | ||
| 585 |
captureCurrentOrigins( |
|
| 586 |
voltageSeries: voltageSeries, |
|
| 587 |
currentSeries: currentSeries |
|
| 588 |
) |
|
| 589 |
sharedAxisOrigin = min(voltageAxisOrigin, currentAxisOrigin) |
|
| 590 |
useSharedOrigin = true |
|
| 591 |
pinOrigin = true |
|
| 592 |
} |
|
| 593 | ||
| 594 |
private func togglePinnedOrigin( |
|
| 595 |
voltageSeries: SeriesData, |
|
| 596 |
currentSeries: SeriesData |
|
| 597 |
) {
|
|
| 598 |
if pinOrigin {
|
|
| 599 |
pinOrigin = false |
|
| 600 |
return |
|
| 601 |
} |
|
| 602 | ||
| 603 |
captureCurrentOrigins( |
|
| 604 |
voltageSeries: voltageSeries, |
|
| 605 |
currentSeries: currentSeries |
|
| 606 |
) |
|
| 607 |
pinOrigin = true |
|
| 608 |
} |
|
| 609 | ||
| 610 |
private func setVisibleOriginsToZero() {
|
|
| 611 |
if useSharedOrigin && supportsSharedOrigin {
|
|
| 612 |
sharedAxisOrigin = 0 |
|
| 613 |
voltageAxisOrigin = 0 |
|
| 614 |
currentAxisOrigin = 0 |
|
| 615 |
} else {
|
|
| 616 |
if displayPower {
|
|
| 617 |
powerAxisOrigin = 0 |
|
| 618 |
} |
|
| 619 |
if displayVoltage {
|
|
| 620 |
voltageAxisOrigin = 0 |
|
| 621 |
} |
|
| 622 |
if displayCurrent {
|
|
| 623 |
currentAxisOrigin = 0 |
|
| 624 |
} |
|
| 625 |
} |
|
| 626 | ||
| 627 |
pinOrigin = true |
|
| 628 |
} |
|
| 629 | ||
| 630 |
private func captureCurrentOrigins( |
|
| 631 |
voltageSeries: SeriesData, |
|
| 632 |
currentSeries: SeriesData |
|
| 633 |
) {
|
|
| 634 |
powerAxisOrigin = displayedLowerBoundForSeries(.power) |
|
| 635 |
voltageAxisOrigin = voltageSeries.autoLowerBound |
|
| 636 |
currentAxisOrigin = currentSeries.autoLowerBound |
|
| 637 |
sharedAxisOrigin = min(voltageAxisOrigin, currentAxisOrigin) |
|
| 638 |
} |
|
| 639 | ||
| 640 |
private func displayedLowerBoundForSeries(_ kind: SeriesKind) -> Double {
|
|
| 641 |
switch kind {
|
|
| 642 |
case .power: |
|
| 643 |
return pinOrigin ? powerAxisOrigin : automaticYBounds(for: filteredSamplePoints(measurements.power), minimumYSpan: minimumPowerSpan).lowerBound |
|
| 644 |
case .voltage: |
|
| 645 |
if pinOrigin && useSharedOrigin && supportsSharedOrigin {
|
|
| 646 |
return sharedAxisOrigin |
|
| 647 |
} |
|
| 648 |
return pinOrigin ? voltageAxisOrigin : automaticYBounds(for: filteredSamplePoints(measurements.voltage), minimumYSpan: minimumVoltageSpan).lowerBound |
|
| 649 |
case .current: |
|
| 650 |
if pinOrigin && useSharedOrigin && supportsSharedOrigin {
|
|
| 651 |
return sharedAxisOrigin |
|
| 652 |
} |
|
| 653 |
return pinOrigin ? currentAxisOrigin : automaticYBounds(for: filteredSamplePoints(measurements.current), minimumYSpan: minimumCurrentSpan).lowerBound |
|
| 654 |
} |
|
| 655 |
} |
|
| 656 | ||
| 657 |
private func filteredSamplePoints(_ measurement: Measurements.Measurement) -> [Measurements.Measurement.Point] {
|
|
| 658 |
measurement.points.filter { point in
|
|
| 659 |
point.isSample && (timeRange?.contains(point.timestamp) ?? true) |
|
| 660 |
} |
|
| 661 |
} |
|
| 662 | ||
| 663 |
private func xBounds( |
|
| 664 |
for samplePoints: [Measurements.Measurement.Point] |
|
| 665 |
) -> ClosedRange<Date> {
|
|
| 666 |
if let timeRange {
|
|
| 667 |
return timeRange |
|
| 668 |
} |
|
| 669 | ||
| 670 |
let upperBound = max(samplePoints.last?.timestamp ?? chartNow, chartNow) |
|
| 671 |
let lowerBound = samplePoints.first?.timestamp ?? upperBound.addingTimeInterval(-defaultEmptyChartTimeSpan) |
|
| 672 | ||
| 673 |
if upperBound.timeIntervalSince(lowerBound) >= minimumTimeSpan {
|
|
| 674 |
return lowerBound...upperBound |
|
| 675 |
} |
|
| 676 | ||
| 677 |
return upperBound.addingTimeInterval(-minimumTimeSpan)...upperBound |
|
| 678 |
} |
|
| 679 | ||
| 680 |
private func automaticYBounds( |
|
| 681 |
for samplePoints: [Measurements.Measurement.Point], |
|
| 682 |
minimumYSpan: Double |
|
| 683 |
) -> (lowerBound: Double, upperBound: Double) {
|
|
| 684 |
let negativeAllowance = max(0.05, minimumYSpan * 0.08) |
|
| 685 | ||
| 686 |
guard |
|
| 687 |
let minimumSampleValue = samplePoints.map(\.value).min(), |
|
| 688 |
let maximumSampleValue = samplePoints.map(\.value).max() |
|
| 689 |
else {
|
|
| 690 |
return (0, minimumYSpan) |
|
| 691 |
} |
|
| 692 | ||
| 693 |
var lowerBound = minimumSampleValue |
|
| 694 |
var upperBound = maximumSampleValue |
|
| 695 |
let currentSpan = upperBound - lowerBound |
|
| 696 | ||
| 697 |
if currentSpan < minimumYSpan {
|
|
| 698 |
let expansion = (minimumYSpan - currentSpan) / 2 |
|
| 699 |
lowerBound -= expansion |
|
| 700 |
upperBound += expansion |
|
| 701 |
} |
|
| 702 | ||
| 703 |
if minimumSampleValue >= 0, lowerBound < -negativeAllowance {
|
|
| 704 |
let shift = -negativeAllowance - lowerBound |
|
| 705 |
lowerBound += shift |
|
| 706 |
upperBound += shift |
|
| 707 |
} |
|
| 708 | ||
| 709 |
let snappedLowerBound = snappedOriginValue(lowerBound) |
|
| 710 |
let resolvedUpperBound = max(upperBound, snappedLowerBound + minimumYSpan) |
|
| 711 |
return (snappedLowerBound, resolvedUpperBound) |
|
| 712 |
} |
|
| 713 | ||
| 714 |
private func resolvedLowerBound( |
|
| 715 |
for kind: SeriesKind, |
|
| 716 |
autoLowerBound: Double |
|
| 717 |
) -> Double {
|
|
| 718 |
guard pinOrigin else { return autoLowerBound }
|
|
| 719 | ||
| 720 |
if useSharedOrigin && supportsSharedOrigin && (kind == .voltage || kind == .current) {
|
|
| 721 |
return sharedAxisOrigin |
|
| 722 |
} |
|
| 723 | ||
| 724 |
switch kind {
|
|
| 725 |
case .power: |
|
| 726 |
return powerAxisOrigin |
|
| 727 |
case .voltage: |
|
| 728 |
return voltageAxisOrigin |
|
| 729 |
case .current: |
|
| 730 |
return currentAxisOrigin |
|
| 731 |
} |
|
| 732 |
} |
|
| 733 | ||
| 734 |
private func resolvedUpperBound( |
|
| 735 |
for kind: SeriesKind, |
|
| 736 |
lowerBound: Double, |
|
| 737 |
autoUpperBound: Double, |
|
| 738 |
maximumSampleValue: Double?, |
|
| 739 |
minimumYSpan: Double |
|
| 740 |
) -> Double {
|
|
| 741 |
guard pinOrigin else {
|
|
| 742 |
return autoUpperBound |
|
| 743 |
} |
|
| 744 | ||
| 745 |
return max( |
|
| 746 |
maximumSampleValue ?? lowerBound, |
|
| 747 |
lowerBound + minimumYSpan, |
|
| 748 |
autoUpperBound |
|
| 749 |
) |
|
| 750 |
} |
|
| 751 | ||
| 752 |
private func adjustOrigin(for kind: SeriesKind, translationHeight: CGFloat) {
|
|
| 753 |
guard abs(translationHeight) >= axisSwipeThreshold else { return }
|
|
| 754 | ||
| 755 |
let delta = translationHeight < 0 ? 1.0 : -1.0 |
|
| 756 |
let baseline = displayedLowerBoundForSeries(kind) |
|
| 757 |
let proposedOrigin = snappedOriginValue(baseline + delta) |
|
| 758 | ||
| 759 |
if useSharedOrigin && supportsSharedOrigin && (kind == .voltage || kind == .current) {
|
|
| 760 |
sharedAxisOrigin = min(proposedOrigin, maximumVisibleSharedOrigin()) |
|
| 761 |
} else {
|
|
| 762 |
switch kind {
|
|
| 763 |
case .power: |
|
| 764 |
powerAxisOrigin = min(proposedOrigin, maximumVisibleOrigin(for: .power)) |
|
| 765 |
case .voltage: |
|
| 766 |
voltageAxisOrigin = min(proposedOrigin, maximumVisibleOrigin(for: .voltage)) |
|
| 767 |
case .current: |
|
| 768 |
currentAxisOrigin = min(proposedOrigin, maximumVisibleOrigin(for: .current)) |
|
| 769 |
} |
|
| 770 |
} |
|
| 771 | ||
| 772 |
pinOrigin = true |
|
| 773 |
} |
|
| 774 | ||
| 775 |
private func maximumVisibleOrigin(for kind: SeriesKind) -> Double {
|
|
| 776 |
switch kind {
|
|
| 777 |
case .power: |
|
| 778 |
return snappedOriginValue(filteredSamplePoints(measurements.power).map(\.value).min() ?? 0) |
|
| 779 |
case .voltage: |
|
| 780 |
return snappedOriginValue(filteredSamplePoints(measurements.voltage).map(\.value).min() ?? 0) |
|
| 781 |
case .current: |
|
| 782 |
return snappedOriginValue(filteredSamplePoints(measurements.current).map(\.value).min() ?? 0) |
|
| 783 |
} |
|
| 784 |
} |
|
| 785 | ||
| 786 |
private func maximumVisibleSharedOrigin() -> Double {
|
|
| 787 |
min( |
|
| 788 |
maximumVisibleOrigin(for: .voltage), |
|
| 789 |
maximumVisibleOrigin(for: .current) |
|
| 790 |
) |
|
| 791 |
} |
|
| 792 | ||
| 793 |
private func snappedOriginValue(_ value: Double) -> Double {
|
|
| 794 |
if value >= 0 {
|
|
| 795 |
return value.rounded(.down) |
|
| 796 |
} |
|
| 797 | ||
| 798 |
return value.rounded(.up) |
|
| 799 |
} |
|
| 800 | ||
| 801 |
private func yGuidePosition( |
|
| 802 |
for labelIndex: Int, |
|
| 803 |
context: ChartContext, |
|
| 804 |
height: CGFloat |
|
| 805 |
) -> CGFloat {
|
|
| 806 |
let value = context.yAxisLabel(for: labelIndex, of: yLabels) |
|
| 807 |
let anchorPoint = CGPoint(x: context.origin.x, y: CGFloat(value)) |
|
| 808 |
return context.placeInRect(point: anchorPoint).y * height |
|
| 809 |
} |
|
| 810 | ||
| 811 |
private func xGuidePosition( |
|
| 812 |
for labelIndex: Int, |
|
| 813 |
context: ChartContext, |
|
| 814 |
width: CGFloat |
|
| 815 |
) -> CGFloat {
|
|
| 816 |
let value = context.xAxisLabel(for: labelIndex, of: xLabels) |
|
| 817 |
let anchorPoint = CGPoint(x: CGFloat(value), y: context.origin.y) |
|
| 818 |
return context.placeInRect(point: anchorPoint).x * width |
|
| 819 |
} |
|
| 820 | ||
| 821 |
// MARK: Cu iteratie nu functioneaza deoarece view-ul din bucla nu este reimprospatat la modificare obiectului observat |
|
| 822 |
fileprivate func xAxisLabelsView( |
|
| 823 |
context: ChartContext |
|
| 824 |
) -> some View {
|
|
| 825 |
var timeFormat: String? |
|
| 826 |
switch context.size.width {
|
|
| 827 |
case 0..<3600: timeFormat = "HH:mm:ss" |
|
| 828 |
case 3600...86400: timeFormat = "HH:mm" |
|
| 829 |
default: timeFormat = "E HH:mm" |
|
| 830 |
} |
|
| 831 |
let labels = (1...xLabels).map {
|
|
| 832 |
Date(timeIntervalSince1970: context.xAxisLabel(for: $0, of: self.xLabels)).format(as: timeFormat!) |
|
| 833 |
} |
|
| 834 | ||
| 835 |
return HStack(spacing: chartSectionSpacing) {
|
|
| 836 |
Color.clear |
|
| 837 |
.frame(width: axisColumnWidth) |
|
| 838 | ||
| 839 |
GeometryReader { geometry in
|
|
| 840 |
let labelWidth = max( |
|
| 841 |
geometry.size.width / CGFloat(max(xLabels - 1, 1)), |
|
| 842 |
1 |
|
| 843 |
) |
|
| 844 | ||
| 845 |
ZStack(alignment: .topLeading) {
|
|
| 846 |
Path { path in
|
|
| 847 |
for labelIndex in 1...self.xLabels {
|
|
| 848 |
let x = xGuidePosition( |
|
| 849 |
for: labelIndex, |
|
| 850 |
context: context, |
|
| 851 |
width: geometry.size.width |
|
| 852 |
) |
|
| 853 |
path.move(to: CGPoint(x: x, y: 0)) |
|
| 854 |
path.addLine(to: CGPoint(x: x, y: 6)) |
|
| 855 |
} |
|
| 856 |
} |
|
| 857 |
.stroke(Color.secondary.opacity(0.26), lineWidth: 0.75) |
|
| 858 | ||
| 859 |
ForEach(Array(labels.enumerated()), id: \.offset) { item in
|
|
| 860 |
let labelIndex = item.offset + 1 |
|
| 861 |
let centerX = xGuidePosition( |
|
| 862 |
for: labelIndex, |
|
| 863 |
context: context, |
|
| 864 |
width: geometry.size.width |
|
| 865 |
) |
|
| 866 | ||
| 867 |
Text(item.element) |
|
| 868 |
.font(.caption.weight(.semibold)) |
|
| 869 |
.monospacedDigit() |
|
| 870 |
.lineLimit(1) |
|
| 871 |
.minimumScaleFactor(0.68) |
|
| 872 |
.frame(width: labelWidth) |
|
| 873 |
.position( |
|
| 874 |
x: centerX, |
|
| 875 |
y: geometry.size.height * 0.7 |
|
| 876 |
) |
|
| 877 |
} |
|
| 878 |
} |
|
| 879 |
.frame(maxWidth: .infinity, maxHeight: .infinity, alignment: .topLeading) |
|
| 880 |
} |
|
| 881 | ||
| 882 |
Color.clear |
|
| 883 |
.frame(width: axisColumnWidth) |
|
| 884 |
} |
|
| 885 |
} |
|
| 886 | ||
| 887 |
private func yAxisLabelsView( |
|
| 888 |
height: CGFloat, |
|
| 889 |
context: ChartContext, |
|
| 890 |
seriesKind: SeriesKind, |
|
| 891 |
measurementUnit: String, |
|
| 892 |
tint: Color |
|
| 893 |
) -> some View {
|
|
| 894 |
GeometryReader { geometry in
|
|
| 895 |
ZStack(alignment: .top) {
|
|
| 896 |
ForEach(0..<yLabels, id: \.self) { row in
|
|
| 897 |
let labelIndex = yLabels - row |
|
| 898 | ||
| 899 |
Text("\(context.yAxisLabel(for: labelIndex, of: yLabels).format(fractionDigits: 1))")
|
|
| 900 |
.font(.caption2.weight(.semibold)) |
|
| 901 |
.monospacedDigit() |
|
| 902 |
.lineLimit(1) |
|
| 903 |
.minimumScaleFactor(0.72) |
|
| 904 |
.frame(width: max(geometry.size.width - 6, 0)) |
|
| 905 |
.position( |
|
| 906 |
x: geometry.size.width / 2, |
|
| 907 |
y: yGuidePosition( |
|
| 908 |
for: labelIndex, |
|
| 909 |
context: context, |
|
| 910 |
height: geometry.size.height |
|
| 911 |
) |
|
| 912 |
) |
|
| 913 |
} |
|
| 914 | ||
| 915 |
Text(measurementUnit) |
|
| 916 |
.font(.caption2.weight(.bold)) |
|
| 917 |
.foregroundColor(tint) |
|
| 918 |
.padding(.horizontal, 6) |
|
| 919 |
.padding(.vertical, 4) |
|
| 920 |
.background( |
|
| 921 |
Capsule(style: .continuous) |
|
| 922 |
.fill(tint.opacity(0.14)) |
|
| 923 |
) |
|
| 924 |
.padding(.top, 6) |
|
| 925 | ||
| 926 |
Text("Y \(Int(displayedLowerBoundForSeries(seriesKind)))")
|
|
| 927 |
.font(.caption2.weight(.semibold)) |
|
| 928 |
.foregroundColor(.secondary) |
|
| 929 |
.padding(.bottom, 8) |
|
| 930 |
.frame(maxWidth: .infinity, maxHeight: .infinity, alignment: .bottom) |
|
| 931 |
} |
|
| 932 |
} |
|
| 933 |
.frame(height: height) |
|
| 934 |
.background( |
|
| 935 |
RoundedRectangle(cornerRadius: 16, style: .continuous) |
|
| 936 |
.fill(tint.opacity(0.12)) |
|
| 937 |
) |
|
| 938 |
.overlay( |
|
| 939 |
RoundedRectangle(cornerRadius: 16, style: .continuous) |
|
| 940 |
.stroke(tint.opacity(0.20), lineWidth: 1) |
|
| 941 |
) |
|
| 942 |
.contentShape(RoundedRectangle(cornerRadius: 16, style: .continuous)) |
|
| 943 |
.gesture( |
|
| 944 |
DragGesture(minimumDistance: axisSwipeThreshold) |
|
| 945 |
.onEnded { value in
|
|
| 946 |
adjustOrigin(for: seriesKind, translationHeight: value.translation.height) |
|
| 947 |
} |
|
| 948 |
) |
|
| 949 |
} |
|
| 950 | ||
| 951 |
fileprivate func horizontalGuides(context: ChartContext) -> some View {
|
|
| 952 |
GeometryReader { geometry in
|
|
| 953 |
Path { path in
|
|
| 954 |
for labelIndex in 1...self.yLabels {
|
|
| 955 |
let y = yGuidePosition( |
|
| 956 |
for: labelIndex, |
|
| 957 |
context: context, |
|
| 958 |
height: geometry.size.height |
|
| 959 |
) |
|
| 960 |
path.addLine(from: CGPoint(x: 0, y: y), to: CGPoint(x: geometry.size.width, y: y)) |
|
| 961 |
} |
|
| 962 |
} |
|
| 963 |
.stroke(Color.secondary.opacity(0.38), lineWidth: 0.85) |
|
| 964 |
} |
|
| 965 |
} |
|
| 966 | ||
| 967 |
fileprivate func verticalGuides(context: ChartContext) -> some View {
|
|
| 968 |
GeometryReader { geometry in
|
|
| 969 |
Path { path in
|
|
| 970 | ||
| 971 |
for labelIndex in 2..<self.xLabels {
|
|
| 972 |
let x = xGuidePosition( |
|
| 973 |
for: labelIndex, |
|
| 974 |
context: context, |
|
| 975 |
width: geometry.size.width |
|
| 976 |
) |
|
| 977 |
path.move(to: CGPoint(x: x, y: 0) ) |
|
| 978 |
path.addLine(to: CGPoint(x: path.currentPoint!.x, y: geometry.size.height) ) |
|
| 979 |
} |
|
| 980 |
} |
|
| 981 |
.stroke(Color.secondary.opacity(0.34), style: StrokeStyle(lineWidth: 0.8, dash: [4, 4])) |
|
| 982 |
} |
|
| 983 |
} |
|
| 984 | ||
| 985 |
fileprivate func discontinuityMarkers( |
|
| 986 |
points: [Measurements.Measurement.Point], |
|
| 987 |
context: ChartContext |
|
| 988 |
) -> some View {
|
|
| 989 |
GeometryReader { geometry in
|
|
| 990 |
Path { path in
|
|
| 991 |
for point in points where point.isDiscontinuity {
|
|
| 992 |
let markerX = context.placeInRect( |
|
| 993 |
point: CGPoint( |
|
| 994 |
x: point.timestamp.timeIntervalSince1970, |
|
| 995 |
y: context.origin.y |
|
| 996 |
) |
|
| 997 |
).x * geometry.size.width |
|
| 998 |
path.move(to: CGPoint(x: markerX, y: 0)) |
|
| 999 |
path.addLine(to: CGPoint(x: markerX, y: geometry.size.height)) |
|
| 1000 |
} |
|
| 1001 |
} |
|
| 1002 |
.stroke(Color.orange.opacity(0.75), style: StrokeStyle(lineWidth: 1, dash: [5, 4])) |
|
| 1003 |
} |
|
| 1004 |
} |
|
| 1005 | ||
| 1006 |
} |
|
| 1007 | ||
| 1008 |
struct Chart : View {
|
|
| 1009 | ||
| 1010 |
let points: [Measurements.Measurement.Point] |
|
| 1011 |
let context: ChartContext |
|
| 1012 |
var areaChart: Bool = false |
|
| 1013 |
var strokeColor: Color = .black |
|
| 1014 | ||
| 1015 |
var body : some View {
|
|
| 1016 |
GeometryReader { geometry in
|
|
| 1017 |
if self.areaChart {
|
|
| 1018 |
self.path( geometry: geometry ) |
|
| 1019 |
.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))) |
|
| 1020 |
} else {
|
|
| 1021 |
self.path( geometry: geometry ) |
|
| 1022 |
.stroke(self.strokeColor, style: StrokeStyle(lineWidth: 2, lineCap: .round, lineJoin: .round)) |
|
| 1023 |
} |
|
| 1024 |
} |
|
| 1025 |
} |
|
| 1026 | ||
| 1027 |
fileprivate func path(geometry: GeometryProxy) -> Path {
|
|
| 1028 |
return Path { path in
|
|
| 1029 |
var firstSample: Measurements.Measurement.Point? |
|
| 1030 |
var lastSample: Measurements.Measurement.Point? |
|
| 1031 |
var needsMove = true |
|
| 1032 | ||
| 1033 |
for point in points {
|
|
| 1034 |
if point.isDiscontinuity {
|
|
| 1035 |
needsMove = true |
|
| 1036 |
continue |
|
| 1037 |
} |
|
| 1038 | ||
| 1039 |
let item = context.placeInRect(point: point.point()) |
|
| 1040 |
let renderedPoint = CGPoint( |
|
| 1041 |
x: item.x * geometry.size.width, |
|
| 1042 |
y: item.y * geometry.size.height |
|
| 1043 |
) |
|
| 1044 | ||
| 1045 |
if firstSample == nil {
|
|
| 1046 |
firstSample = point |
|
| 1047 |
} |
|
| 1048 |
lastSample = point |
|
| 1049 | ||
| 1050 |
if needsMove {
|
|
| 1051 |
path.move(to: renderedPoint) |
|
| 1052 |
needsMove = false |
|
| 1053 |
} else {
|
|
| 1054 |
path.addLine(to: renderedPoint) |
|
| 1055 |
} |
|
| 1056 |
} |
|
| 1057 | ||
| 1058 |
if self.areaChart, let firstSample, let lastSample {
|
|
| 1059 |
let lastPointX = context.placeInRect(point: CGPoint(x: lastSample.point().x, y: context.origin.y )) |
|
| 1060 |
let firstPointX = context.placeInRect(point: CGPoint(x: firstSample.point().x, y: context.origin.y )) |
|
| 1061 |
path.addLine(to: CGPoint(x: lastPointX.x * geometry.size.width, y: lastPointX.y * geometry.size.height ) ) |
|
| 1062 |
path.addLine(to: CGPoint(x: firstPointX.x * geometry.size.width, y: firstPointX.y * geometry.size.height ) ) |
|
| 1063 |
// MARK: Nu e nevoie. Fill inchide automat calea |
|
| 1064 |
// path.closeSubpath() |
|
| 1065 |
} |
|
| 1066 |
} |
|
| 1067 |
} |
|
| 1068 | ||
| 1069 |
} |