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// |
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// LiveView.swift |
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// USB Meter |
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// |
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// Created by Bogdan Timofte on 09/03/2020. |
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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 LiveView: View {
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@EnvironmentObject private var meter: Meter |
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var body: some View {
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VStack(alignment: .leading, spacing: 16) {
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HStack {
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Text("Live Data")
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.font(.headline) |
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Spacer() |
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statusBadge |
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} |
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LazyVGrid(columns: [GridItem(.flexible()), GridItem(.flexible())], spacing: 12) {
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liveMetricCard( |
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title: "Voltage", |
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symbol: "bolt.fill", |
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color: .green, |
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value: "\(meter.voltage.format(decimalDigits: 3)) V", |
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range: rangeText( |
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min: meter.measurements.voltage.context.minValue, |
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max: meter.measurements.voltage.context.maxValue, |
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unit: "V" |
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) |
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) |
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liveMetricCard( |
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title: "Current", |
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symbol: "waveform.path.ecg", |
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color: .blue, |
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value: "\(meter.current.format(decimalDigits: 3)) A", |
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range: rangeText( |
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min: meter.measurements.current.context.minValue, |
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max: meter.measurements.current.context.maxValue, |
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unit: "A" |
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) |
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) |
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liveMetricCard( |
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title: "Power", |
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symbol: "flame.fill", |
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color: .pink, |
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value: "\(meter.power.format(decimalDigits: 3)) W", |
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range: rangeText( |
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min: meter.measurements.power.context.minValue, |
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max: meter.measurements.power.context.maxValue, |
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unit: "W" |
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) |
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) |
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liveMetricCard( |
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title: "Temperature", |
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symbol: "thermometer.medium", |
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color: .orange, |
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value: meter.primaryTemperatureDescription, |
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range: meter.secondaryTemperatureDescription |
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) |
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} |
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if shouldShowSecondaryDetails {
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VStack(alignment: .leading, spacing: 12) {
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Text("Details")
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.font(.subheadline.weight(.semibold)) |
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.foregroundColor(.secondary) |
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if meter.loadResistance > 0 {
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secondaryDetailRow( |
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title: "Load", |
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value: "\(meter.loadResistance.format(decimalDigits: 1)) \u{2126}",
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symbol: "cable.connector", |
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color: .yellow |
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) |
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} |
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if shouldShowChargerType {
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secondaryDetailRow( |
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title: "Charger", |
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value: meter.chargerTypeDescription, |
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symbol: "bolt.badge.checkmark", |
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color: .purple |
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) |
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} |
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} |
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.padding(18) |
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.meterCard(tint: meter.color, fillOpacity: 0.06, strokeOpacity: 0.10) |
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} |
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} |
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} |
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private var statusBadge: some View {
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Text(meter.operationalState == .dataIsAvailable ? "Live" : "Waiting") |
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.font(.caption.weight(.semibold)) |
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.padding(.horizontal, 10) |
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.padding(.vertical, 6) |
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.foregroundColor(meter.operationalState == .dataIsAvailable ? .green : .secondary) |
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.meterCard( |
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tint: meter.operationalState == .dataIsAvailable ? .green : .secondary, |
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fillOpacity: 0.12, |
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strokeOpacity: 0.16, |
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cornerRadius: 999 |
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) |
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} |
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private var shouldShowSecondaryDetails: Bool {
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meter.loadResistance > 0 || shouldShowChargerType |
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} |
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private var shouldShowChargerType: Bool {
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meter.supportsChargerDetection && meter.chargerTypeDescription != "Unknown" |
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} |
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private func liveMetricCard( |
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title: String, |
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symbol: String, |
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color: Color, |
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value: String, |
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range: String? |
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) -> some View {
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VStack(alignment: .leading, spacing: 10) {
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HStack {
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Image(systemName: symbol) |
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.font(.system(size: 15, weight: .semibold)) |
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.foregroundColor(color) |
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.frame(width: 34, height: 34) |
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.background(Circle().fill(color.opacity(0.12))) |
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Spacer() |
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} |
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Text(title) |
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.font(.subheadline.weight(.semibold)) |
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.foregroundColor(.secondary) |
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Text(value) |
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.font(.system(.title3, design: .rounded).weight(.bold)) |
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.monospacedDigit() |
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if let range, !range.isEmpty {
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Text(range) |
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.font(.caption) |
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.foregroundColor(.secondary) |
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.lineLimit(2) |
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} |
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} |
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.frame(maxWidth: .infinity, minHeight: 128, alignment: .leading) |
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.padding(16) |
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.meterCard(tint: color, fillOpacity: 0.10, strokeOpacity: 0.12) |
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} |
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private func secondaryDetailRow( |
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title: String, |
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value: String, |
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symbol: String, |
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color: Color |
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) -> some View {
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HStack(spacing: 12) {
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Image(systemName: symbol) |
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.foregroundColor(color) |
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.frame(width: 28) |
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Text(title) |
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.foregroundColor(.secondary) |
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Spacer() |
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Text(value) |
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.fontWeight(.semibold) |
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.multilineTextAlignment(.trailing) |
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} |
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.font(.footnote) |
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} |
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private func rangeText(min: Double, max: Double, unit: String) -> String? {
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guard min.isFinite, max.isFinite else { return nil }
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return "Min \(min.format(decimalDigits: 3)) \(unit) Max \(max.format(decimalDigits: 3)) \(unit)" |
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} |
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} |