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// |
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// MeterView.swift |
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// USB Meter |
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// |
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// Created by Bogdan Timofte on 04/03/2020. |
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// Copyright © 2020 Bogdan Timofte. All rights reserved. |
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// |
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// MARK: Parent frame https://stackoverflow.com/questions/56832865/how-to-access-parents-frame-in-swiftui |
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import SwiftUI |
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import CoreBluetooth |
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struct MeterView: View {
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@EnvironmentObject private var meter: Meter |
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@State var dataGroupsViewVisibility: Bool = false |
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@State var recordingViewVisibility: Bool = false |
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@State var measurementsViewVisibility: Bool = false |
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private var myBounds: CGRect { UIScreen.main.bounds }
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private let actionColumns = [ |
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GridItem(.adaptive(minimum: 112, maximum: 180), spacing: 12) |
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] |
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var body: some View {
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ScrollView {
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VStack(alignment: .leading, spacing: 16) {
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headerCard |
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connectionControlButton() |
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if meter.operationalState == .dataIsAvailable {
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actionGrid |
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if meter.measurements.power.context.isValid {
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MeasurementChartView() |
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.environmentObject(meter.measurements) |
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.frame(minHeight: myBounds.height / 3.4) |
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.padding(16) |
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.meterCard(tint: meter.color, fillOpacity: 0.12, strokeOpacity: 0.20) |
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} |
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ControlView() |
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.padding(16) |
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.meterCard(tint: .indigo, fillOpacity: 0.12, strokeOpacity: 0.20) |
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LiveView() |
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.padding(18) |
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.meterCard(tint: meter.color, fillOpacity: 0.12, strokeOpacity: 0.20) |
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} |
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} |
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.padding() |
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} |
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.background( |
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LinearGradient( |
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colors: [ |
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meter.color.opacity(0.22), |
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Color.secondary.opacity(0.08), |
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Color.clear |
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], |
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startPoint: .topLeading, |
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endPoint: .bottomTrailing |
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) |
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.ignoresSafeArea() |
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) |
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.navigationBarTitle("Meter")
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.navigationBarItems(trailing: HStack (spacing: 0) {
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if meter.operationalState > .notPresent {
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RSSIView(RSSI: meter.btSerial.RSSI) |
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.frame(width: 24) |
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.padding(.vertical) |
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} |
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NavigationLink(destination: MeterSettingsView().environmentObject(meter)) {
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Image(systemName: "gearshape.fill") |
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.padding(.vertical) |
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.padding(.leading) |
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} |
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}) |
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} |
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private var headerCard: some View {
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VStack(alignment: .leading, spacing: 14) {
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HStack(alignment: .top) {
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VStack(alignment: .leading, spacing: 6) {
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Text(meter.name) |
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.font(.system(.title2, design: .rounded).weight(.bold)) |
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Text(meter.deviceModelSummary) |
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.font(.subheadline.weight(.semibold)) |
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.foregroundColor(.secondary) |
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} |
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Spacer() |
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VStack(alignment: .trailing, spacing: 6) {
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Text(statusText) |
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.font(.caption.weight(.bold)) |
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.padding(.horizontal, 12) |
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.padding(.vertical, 6) |
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.meterCard(tint: statusColor, fillOpacity: 0.24, strokeOpacity: 0.30, cornerRadius: 999) |
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if meter.operationalState > .notPresent {
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Text("RSSI \(meter.btSerial.RSSI)")
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.font(.caption) |
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.foregroundColor(.secondary) |
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} |
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} |
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} |
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Divider().opacity(0.35) |
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HStack(spacing: 12) {
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headerPill(title: "MAC", value: meter.btSerial.macAddress.description) |
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headerPill(title: "Range", value: meter.documentedWorkingVoltage) |
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} |
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} |
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.padding(20) |
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.meterCard(tint: meter.color, fillOpacity: 0.22, strokeOpacity: 0.24) |
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} |
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private var actionGrid: some View {
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LazyVGrid(columns: actionColumns, spacing: 12) {
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meterSheetButton(icon: "square.grid.2x2.fill", title: meter.dataGroupsTitle, tint: .teal) {
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dataGroupsViewVisibility.toggle() |
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} |
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.sheet(isPresented: $dataGroupsViewVisibility) {
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DataGroupsView(visibility: $dataGroupsViewVisibility) |
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.environmentObject(meter) |
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} |
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if meter.supportsRecordingView {
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meterSheetButton(icon: "gauge.with.dots.needle.50percent", title: "Charge Record", tint: .pink) {
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recordingViewVisibility.toggle() |
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} |
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.sheet(isPresented: $recordingViewVisibility) {
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RecordingView(visibility: $recordingViewVisibility) |
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.environmentObject(meter) |
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} |
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} |
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meterSheetButton(icon: "clock.arrow.circlepath", title: "App History", tint: .blue) {
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measurementsViewVisibility.toggle() |
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} |
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.sheet(isPresented: $measurementsViewVisibility) {
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MeasurementsView(visibility: $measurementsViewVisibility) |
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.environmentObject(meter.measurements) |
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} |
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} |
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} |
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fileprivate func connectionControlButton() -> some View {
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let connected = meter.operationalState >= .peripheralConnectionPending |
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let tint = connected ? Color.red : Color.green |
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return Group {
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if meter.operationalState == .notPresent {
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HStack(spacing: 10) {
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Image(systemName: "exclamationmark.triangle.fill") |
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.foregroundColor(.orange) |
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Text("Not found at this time.")
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.fontWeight(.semibold) |
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Spacer() |
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} |
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.padding(16) |
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.meterCard(tint: .orange, fillOpacity: 0.18, strokeOpacity: 0.24) |
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} else {
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Button(action: {
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if meter.operationalState < .peripheralConnectionPending {
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meter.connect() |
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} else {
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meter.disconnect() |
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} |
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}) {
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HStack {
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Image(systemName: connected ? "xmark.circle.fill" : "bolt.horizontal.circle.fill") |
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Text(connected ? "Disconnect" : "Connect") |
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.fontWeight(.semibold) |
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Spacer() |
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Text(statusText) |
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.font(.footnote.weight(.medium)) |
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.foregroundColor(.secondary) |
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} |
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.padding(.horizontal, 18) |
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.padding(.vertical, 16) |
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.frame(maxWidth: .infinity) |
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.foregroundColor(tint) |
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.meterCard(tint: tint, fillOpacity: 0.18, strokeOpacity: 0.24) |
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} |
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.buttonStyle(.plain) |
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} |
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} |
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} |
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fileprivate func meterSheetButton(icon: String, title: String, tint: Color, action: @escaping () -> Void) -> some View {
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Button(action: action) {
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VStack(spacing: 10) {
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Image(systemName: icon) |
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.font(.system(size: 20, weight: .semibold)) |
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.frame(width: 40, height: 40) |
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.background(Circle().fill(tint.opacity(0.14))) |
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Text(title) |
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.font(.footnote.weight(.semibold)) |
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.multilineTextAlignment(.center) |
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.lineLimit(2) |
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.minimumScaleFactor(0.9) |
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} |
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.foregroundColor(tint) |
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.frame(maxWidth: .infinity, minHeight: 106) |
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.padding(.horizontal, 8) |
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.meterCard(tint: tint, fillOpacity: 0.18, strokeOpacity: 0.22) |
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} |
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.buttonStyle(.plain) |
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} |
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private func headerPill(title: String, value: String) -> some View {
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VStack(alignment: .leading, spacing: 4) {
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Text(title) |
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.font(.caption.weight(.semibold)) |
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.foregroundColor(.secondary) |
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Text(value) |
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.font(.footnote.weight(.semibold)) |
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.lineLimit(1) |
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.minimumScaleFactor(0.8) |
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} |
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.frame(maxWidth: .infinity, alignment: .leading) |
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.padding(.horizontal, 12) |
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.padding(.vertical, 10) |
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.meterCard(tint: meter.color, fillOpacity: 0.16, strokeOpacity: 0.20, cornerRadius: 16) |
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} |
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private var statusText: String {
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switch meter.operationalState {
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case .notPresent: |
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return "Missing" |
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case .peripheralNotConnected: |
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return "Ready" |
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case .peripheralConnectionPending: |
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return "Connecting" |
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case .peripheralConnected: |
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return "Linked" |
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case .peripheralReady: |
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return "Preparing" |
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case .comunicating: |
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return "Syncing" |
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case .dataIsAvailable: |
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return "Live" |
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} |
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} |
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private var statusColor: Color {
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Meter.operationalColor(for: meter.operationalState) |
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} |
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} |