564 lines
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19.541kb
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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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private struct TabBarStyle {
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let showsTitles: Bool |
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let horizontalPadding: CGFloat |
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let topPadding: CGFloat |
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let bottomPadding: CGFloat |
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let chipHorizontalPadding: CGFloat |
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let chipVerticalPadding: CGFloat |
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let outerPadding: CGFloat |
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let maxWidth: CGFloat |
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let barBackgroundOpacity: CGFloat |
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let materialOpacity: CGFloat |
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let shadowOpacity: CGFloat |
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let floatingInset: CGFloat |
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static let portrait = TabBarStyle( |
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showsTitles: true, |
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horizontalPadding: 16, |
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topPadding: 10, |
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bottomPadding: 8, |
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chipHorizontalPadding: 10, |
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chipVerticalPadding: 7, |
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outerPadding: 6, |
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maxWidth: 420, |
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barBackgroundOpacity: 0.10, |
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materialOpacity: 0.78, |
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shadowOpacity: 0, |
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floatingInset: 0 |
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) |
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static let landscapeInline = TabBarStyle( |
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showsTitles: true, |
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horizontalPadding: 12, |
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topPadding: 10, |
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bottomPadding: 8, |
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chipHorizontalPadding: 10, |
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chipVerticalPadding: 7, |
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outerPadding: 6, |
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maxWidth: 420, |
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barBackgroundOpacity: 0.10, |
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materialOpacity: 0.78, |
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shadowOpacity: 0, |
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floatingInset: 0 |
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) |
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static let landscapeFloating = TabBarStyle( |
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showsTitles: false, |
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horizontalPadding: 16, |
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topPadding: 10, |
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bottomPadding: 0, |
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chipHorizontalPadding: 11, |
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chipVerticalPadding: 11, |
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outerPadding: 7, |
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maxWidth: 260, |
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barBackgroundOpacity: 0.02, |
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materialOpacity: 0, |
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shadowOpacity: 0.18, |
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floatingInset: 12 |
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) |
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} |
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private enum MeterTab: String, Hashable {
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case home |
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case live |
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case chart |
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case settings |
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var title: String {
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switch self {
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case .home: return "Home" |
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case .live: return "Live" |
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case .chart: return "Chart" |
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case .settings: return "Settings" |
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} |
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} |
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var systemImage: String {
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switch self {
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case .home: return "house.fill" |
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case .live: return "waveform.path.ecg" |
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case .chart: return "chart.xyaxis.line" |
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case .settings: return "gearshape.fill" |
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} |
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} |
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} |
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@EnvironmentObject private var meter: Meter |
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@Environment(\.dismiss) private var dismiss |
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private static let isMacIPadApp: Bool = ProcessInfo.processInfo.isiOSAppOnMac |
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#if os(iOS) |
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private static let isPhone: Bool = UIDevice.current.userInterfaceIdiom == .phone |
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#else |
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private static let isPhone: Bool = false |
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#endif |
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@State private var selectedMeterTab: MeterTab = .home |
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@State private var navBarTitle: String = "Meter" |
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@State private var navBarShowRSSI: Bool = false |
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@State private var navBarRSSI: Int = 0 |
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@State private var landscapeTabBarHeight: CGFloat = 0 |
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var body: some View {
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GeometryReader { proxy in
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let landscape = isLandscape(size: proxy.size) |
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let usesOverlayTabBar = landscape && Self.isPhone |
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let tabBarStyle = tabBarStyle(for: landscape, usesOverlayTabBar: usesOverlayTabBar) |
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VStack(spacing: 0) {
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if Self.isMacIPadApp {
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macNavigationHeader |
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} |
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Group {
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if landscape {
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landscapeDeck( |
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size: proxy.size, |
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usesOverlayTabBar: usesOverlayTabBar, |
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tabBarStyle: tabBarStyle |
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) |
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} else {
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portraitContent(size: proxy.size, tabBarStyle: tabBarStyle) |
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} |
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} |
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.frame(maxWidth: .infinity, maxHeight: .infinity, alignment: .top) |
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} |
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#if !targetEnvironment(macCatalyst) |
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.navigationBarHidden(Self.isMacIPadApp || landscape) |
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#endif |
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} |
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.background(meterBackground) |
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.modifier(IOSOnlyNavBar( |
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apply: !Self.isMacIPadApp, |
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title: navBarTitle, |
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showRSSI: navBarShowRSSI, |
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rssi: navBarRSSI, |
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meter: meter |
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)) |
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.onAppear {
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navBarTitle = meter.name.isEmpty ? "Meter" : meter.name |
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navBarShowRSSI = meter.operationalState > .notPresent |
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navBarRSSI = meter.btSerial.averageRSSI |
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} |
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.onChange(of: meter.name) { name in
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navBarTitle = name.isEmpty ? "Meter" : name |
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} |
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.onChange(of: meter.operationalState) { state in
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navBarShowRSSI = state > .notPresent |
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} |
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.onChange(of: meter.btSerial.averageRSSI) { newRSSI in
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if abs(newRSSI - navBarRSSI) >= 5 {
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navBarRSSI = newRSSI |
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} |
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} |
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.onChange(of: selectedMeterTab) { newTab in
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meter.preferredTabIdentifier = newTab.rawValue |
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} |
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} |
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// MARK: - Custom navigation header for Designed-for-iPad on Mac |
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private var macNavigationHeader: some View {
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HStack(spacing: 12) {
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Button {
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dismiss() |
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} label: {
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HStack(spacing: 4) {
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Image(systemName: "chevron.left") |
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.font(.body.weight(.semibold)) |
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Text("USB Meters")
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} |
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.foregroundColor(.accentColor) |
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} |
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.buttonStyle(.plain) |
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Text(meter.name.isEmpty ? "Meter" : meter.name) |
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.font(.headline) |
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.lineLimit(1) |
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Spacer() |
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MeterConnectionToolbarButton( |
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operationalState: meter.operationalState, |
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showsTitle: true, |
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connectAction: { meter.connect() },
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disconnectAction: { meter.disconnect() }
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) |
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if meter.operationalState > .notPresent {
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RSSIView(RSSI: meter.btSerial.averageRSSI) |
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.frame(width: 18, height: 18) |
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} |
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} |
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.padding(.horizontal, 16) |
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.padding(.vertical, 10) |
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.background( |
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Rectangle() |
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.fill(.ultraThinMaterial) |
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.ignoresSafeArea(edges: .top) |
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) |
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.overlay(alignment: .bottom) {
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Rectangle() |
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.fill(Color.secondary.opacity(0.12)) |
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.frame(height: 1) |
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} |
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} |
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private func portraitContent(size: CGSize, tabBarStyle: TabBarStyle) -> some View {
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portraitSegmentedDeck(size: size, tabBarStyle: tabBarStyle) |
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} |
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@ViewBuilder |
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private func landscapeDeck(size: CGSize, usesOverlayTabBar: Bool, tabBarStyle: TabBarStyle) -> some View {
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if usesOverlayTabBar {
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landscapeOverlaySegmentedDeck(size: size, tabBarStyle: tabBarStyle) |
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} else {
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landscapeSegmentedDeck(size: size, tabBarStyle: tabBarStyle) |
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} |
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} |
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private func landscapeOverlaySegmentedDeck(size: CGSize, tabBarStyle: TabBarStyle) -> some View {
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ZStack(alignment: .top) {
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landscapeSegmentedContent(size: size) |
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.frame(maxWidth: .infinity, maxHeight: .infinity, alignment: .topLeading) |
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.padding(.top, landscapeContentTopPadding(for: tabBarStyle)) |
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.id(displayedMeterTab) |
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.transition(.opacity.combined(with: .move(edge: .trailing))) |
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segmentedTabBar(style: tabBarStyle, showsConnectionAction: !Self.isMacIPadApp) |
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} |
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.animation(.easeInOut(duration: 0.22), value: displayedMeterTab) |
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.animation(.easeInOut(duration: 0.22), value: availableMeterTabs) |
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.onAppear {
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restoreSelectedTab() |
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} |
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.onPreferenceChange(MeterTabBarHeightPreferenceKey.self) { height in
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if height > 0 {
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landscapeTabBarHeight = height |
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} |
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} |
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} |
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private func landscapeSegmentedDeck(size: CGSize, tabBarStyle: TabBarStyle) -> some View {
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VStack(spacing: 0) {
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segmentedTabBar(style: tabBarStyle, showsConnectionAction: !Self.isMacIPadApp) |
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landscapeSegmentedContent(size: size) |
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.frame(maxWidth: .infinity, maxHeight: .infinity, alignment: .topLeading) |
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.id(displayedMeterTab) |
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.transition(.opacity.combined(with: .move(edge: .trailing))) |
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} |
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.animation(.easeInOut(duration: 0.22), value: displayedMeterTab) |
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.animation(.easeInOut(duration: 0.22), value: availableMeterTabs) |
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.onAppear {
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restoreSelectedTab() |
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} |
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} |
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private func portraitSegmentedDeck(size: CGSize, tabBarStyle: TabBarStyle) -> some View {
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VStack(spacing: 0) {
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segmentedTabBar(style: tabBarStyle) |
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portraitSegmentedContent(size: size) |
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.frame(maxWidth: .infinity, maxHeight: .infinity, alignment: .topLeading) |
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.id(displayedMeterTab) |
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.transition(.opacity.combined(with: .move(edge: .trailing))) |
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} |
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.animation(.easeInOut(duration: 0.22), value: displayedMeterTab) |
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.animation(.easeInOut(duration: 0.22), value: availableMeterTabs) |
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.onAppear {
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restoreSelectedTab() |
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} |
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} |
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private func segmentedTabBar(style: TabBarStyle, showsConnectionAction: Bool = false) -> some View {
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let isFloating = style.floatingInset > 0 |
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let cornerRadius = style.showsTitles ? 14.0 : 22.0 |
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return HStack {
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Spacer(minLength: 0) |
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HStack(spacing: 8) {
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ForEach(availableMeterTabs, id: \.self) { tab in
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let isSelected = displayedMeterTab == tab |
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Button {
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withAnimation(.easeInOut(duration: 0.2)) {
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selectedMeterTab = tab |
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} |
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} label: {
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HStack(spacing: 6) {
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Image(systemName: tab.systemImage) |
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.font(.subheadline.weight(.semibold)) |
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if style.showsTitles {
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Text(tab.title) |
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.font(.subheadline.weight(.semibold)) |
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.lineLimit(1) |
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} |
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} |
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.foregroundColor( |
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isSelected |
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? .white |
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: (isFloating ? .white.opacity(0.82) : .primary) |
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) |
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.padding(.horizontal, style.chipHorizontalPadding) |
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.padding(.vertical, style.chipVerticalPadding) |
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.frame(maxWidth: .infinity) |
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.background( |
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Capsule() |
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.fill( |
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isSelected |
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? meter.color.opacity(isFloating ? 0.94 : 1) |
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: (isFloating ? Color.white.opacity(0.045) : Color.secondary.opacity(0.12)) |
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) |
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) |
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} |
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.buttonStyle(.plain) |
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.accessibilityLabel(tab.title) |
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} |
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} |
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.frame(maxWidth: style.maxWidth) |
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.padding(style.outerPadding) |
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.background( |
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RoundedRectangle(cornerRadius: cornerRadius, style: .continuous) |
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.fill( |
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isFloating |
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? LinearGradient( |
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colors: [ |
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Color.white.opacity(0.14), |
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Color.white.opacity(0.06) |
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], |
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startPoint: .topLeading, |
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endPoint: .bottomTrailing |
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) |
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: LinearGradient( |
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colors: [ |
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Color.secondary.opacity(style.barBackgroundOpacity), |
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Color.secondary.opacity(style.barBackgroundOpacity) |
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], |
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startPoint: .topLeading, |
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endPoint: .bottomTrailing |
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) |
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) |
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) |
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.overlay {
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RoundedRectangle(cornerRadius: cornerRadius, style: .continuous) |
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.stroke( |
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isFloating ? Color.white.opacity(0.10) : Color.clear, |
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lineWidth: 1 |
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) |
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} |
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.background {
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if !isFloating {
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RoundedRectangle(cornerRadius: cornerRadius, style: .continuous) |
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.fill(.ultraThinMaterial) |
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} |
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} |
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.shadow(color: Color.black.opacity(style.shadowOpacity), radius: isFloating ? 28 : 24, x: 0, y: isFloating ? 16 : 12) |
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Spacer(minLength: 0) |
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} |
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.padding(.horizontal, style.horizontalPadding) |
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.padding(.top, style.topPadding) |
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.padding(.bottom, style.bottomPadding) |
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.background( |
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GeometryReader { geometry in
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Color.clear |
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.preference(key: MeterTabBarHeightPreferenceKey.self, value: geometry.size.height) |
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} |
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) |
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.padding(.horizontal, style.floatingInset) |
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.background {
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if style.floatingInset == 0 {
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Rectangle() |
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.fill(.ultraThinMaterial) |
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.opacity(style.materialOpacity) |
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.ignoresSafeArea(edges: .top) |
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} |
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} |
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.overlay(alignment: .bottom) {
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if style.floatingInset == 0 {
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Rectangle() |
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.fill(Color.secondary.opacity(0.12)) |
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.frame(height: 1) |
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} |
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} |
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.overlay(alignment: .trailing) {
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if showsConnectionAction {
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MeterConnectionToolbarButton( |
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operationalState: meter.operationalState, |
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showsTitle: false, |
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connectAction: { meter.connect() },
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disconnectAction: { meter.disconnect() }
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) |
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.font(.title3.weight(.semibold)) |
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.padding(.trailing, style.horizontalPadding + style.floatingInset + 4) |
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.padding(.top, style.topPadding) |
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.padding(.bottom, style.bottomPadding) |
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} |
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} |
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} |
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@ViewBuilder |
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private func landscapeSegmentedContent(size: CGSize) -> some View {
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switch displayedMeterTab {
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case .home: |
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MeterHomeTabView(size: size, isLandscape: true) |
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case .live: |
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MeterLiveTabView(size: size, isLandscape: true) |
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case .chart: |
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MeterChartTabView(size: size, isLandscape: true) |
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case .settings: |
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MeterSettingsTabView(isMacIPadApp: Self.isMacIPadApp) {
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withAnimation(.easeInOut(duration: 0.22)) {
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selectedMeterTab = .home |
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} |
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} |
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} |
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} |
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@ViewBuilder |
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private func portraitSegmentedContent(size: CGSize) -> some View {
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switch displayedMeterTab {
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case .home: |
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MeterHomeTabView(size: size, isLandscape: false) |
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case .live: |
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MeterLiveTabView(size: size, isLandscape: false) |
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case .chart: |
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MeterChartTabView(size: size, isLandscape: false) |
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case .settings: |
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MeterSettingsTabView(isMacIPadApp: Self.isMacIPadApp) {
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withAnimation(.easeInOut(duration: 0.22)) {
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selectedMeterTab = .home |
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} |
|
| 447 |
} |
|
| 448 |
} |
|
| 449 |
} |
|
| 450 | ||
| 451 |
private var availableMeterTabs: [MeterTab] {
|
|
| 452 |
var tabs: [MeterTab] = [.home] |
|
| 453 | ||
| 454 |
if meter.operationalState == .dataIsAvailable {
|
|
| 455 |
tabs.append(.live) |
|
| 456 | ||
| 457 |
if meter.measurements.power.context.isValid {
|
|
| 458 |
tabs.append(.chart) |
|
| 459 |
} |
|
| 460 |
} |
|
| 461 | ||
| 462 |
tabs.append(.settings) |
|
| 463 | ||
| 464 |
return tabs |
|
| 465 |
} |
|
| 466 | ||
| 467 |
private var displayedMeterTab: MeterTab {
|
|
| 468 |
if availableMeterTabs.contains(selectedMeterTab) {
|
|
| 469 |
return selectedMeterTab |
|
| 470 |
} |
|
| 471 |
return .home |
|
| 472 |
} |
|
| 473 | ||
| 474 |
private func restoreSelectedTab() {
|
|
| 475 |
guard let restoredTab = MeterTab(rawValue: meter.preferredTabIdentifier) else {
|
|
| 476 |
meter.preferredTabIdentifier = MeterTab.home.rawValue |
|
| 477 |
selectedMeterTab = .home |
|
| 478 |
return |
|
| 479 |
} |
|
| 480 | ||
| 481 |
selectedMeterTab = restoredTab |
|
| 482 |
} |
|
| 483 | ||
| 484 |
private var meterBackground: some View {
|
|
| 485 |
LinearGradient( |
|
| 486 |
colors: [ |
|
| 487 |
meter.color.opacity(0.22), |
|
| 488 |
Color.secondary.opacity(0.08), |
|
| 489 |
Color.clear |
|
| 490 |
], |
|
| 491 |
startPoint: .topLeading, |
|
| 492 |
endPoint: .bottomTrailing |
|
| 493 |
) |
|
| 494 |
.ignoresSafeArea() |
|
| 495 |
} |
|
| 496 | ||
| 497 |
private func isLandscape(size: CGSize) -> Bool {
|
|
| 498 |
size.width > size.height |
|
| 499 |
} |
|
| 500 | ||
| 501 |
private func tabBarStyle(for landscape: Bool, usesOverlayTabBar: Bool) -> TabBarStyle {
|
|
| 502 |
if usesOverlayTabBar {
|
|
| 503 |
return .landscapeFloating |
|
| 504 |
} |
|
| 505 | ||
| 506 |
if landscape {
|
|
| 507 |
return .landscapeInline |
|
| 508 |
} |
|
| 509 | ||
| 510 |
return .portrait |
|
| 511 |
} |
|
| 512 | ||
| 513 |
private func landscapeContentTopPadding(for style: TabBarStyle) -> CGFloat {
|
|
| 514 |
if style.floatingInset > 0 {
|
|
| 515 |
return max(landscapeTabBarHeight * 0.44, 26) |
|
| 516 |
} |
|
| 517 | ||
| 518 |
return max(landscapeTabBarHeight - 6, 0) |
|
| 519 |
} |
|
| 520 | ||
| 521 |
} |
|
| 522 | ||
| 523 |
private struct MeterTabBarHeightPreferenceKey: PreferenceKey {
|
|
| 524 |
static var defaultValue: CGFloat = 0 |
|
| 525 | ||
| 526 |
static func reduce(value: inout CGFloat, nextValue: () -> CGFloat) {
|
|
| 527 |
value = max(value, nextValue()) |
|
| 528 |
} |
|
| 529 |
} |
|
| 530 | ||
| 531 |
// MARK: - Conditional navigation bar modifier (skipped on Designed-for-iPad / Mac) |
|
| 532 | ||
| 533 |
private struct IOSOnlyNavBar: ViewModifier {
|
|
| 534 |
let apply: Bool |
|
| 535 |
let title: String |
|
| 536 |
let showRSSI: Bool |
|
| 537 |
let rssi: Int |
|
| 538 |
let meter: Meter |
|
| 539 | ||
| 540 |
@ViewBuilder |
|
| 541 |
func body(content: Content) -> some View {
|
|
| 542 |
if apply {
|
|
| 543 |
content |
|
| 544 |
.navigationBarTitle(title) |
|
| 545 |
.toolbar {
|
|
| 546 |
ToolbarItemGroup(placement: .navigationBarTrailing) {
|
|
| 547 |
MeterConnectionToolbarButton( |
|
| 548 |
operationalState: meter.operationalState, |
|
| 549 |
showsTitle: false, |
|
| 550 |
connectAction: { meter.connect() },
|
|
| 551 |
disconnectAction: { meter.disconnect() }
|
|
| 552 |
) |
|
| 553 |
.font(.body.weight(.semibold)) |
|
| 554 |
if showRSSI {
|
|
| 555 |
RSSIView(RSSI: rssi) |
|
| 556 |
.frame(width: 18, height: 18) |
|
| 557 |
} |
|
| 558 |
} |
|
| 559 |
} |
|
| 560 |
} else {
|
|
| 561 |
content |
|
| 562 |
} |
|
| 563 |
} |
|
| 564 |
} |