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// |
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// ControlView.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 ControlView: View {
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@EnvironmentObject private var meter: Meter |
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var compactLayout: Bool = false |
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var availableSize: CGSize? = nil |
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var body: some View {
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VStack(alignment: .leading, spacing: 14) {
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HStack {
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Text("Controls")
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.font(.headline) |
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Spacer() |
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Text(meter.reportsCurrentScreenIndex ? "Device Screen" : "Page Controls") |
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.font(.caption.weight(.semibold)) |
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.foregroundColor(.secondary) |
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} |
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if compactLayout {
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if usesExpandedCompactLayout {
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Spacer(minLength: 0) |
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VStack(spacing: 12) {
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HStack(spacing: 12) {
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controlButton( |
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title: "Prev", |
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symbol: "chevron.left", |
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tint: .indigo, |
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action: { meter.previousScreen() }
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) |
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currentScreenCard |
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.frame(maxWidth: .infinity, minHeight: 112) |
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.padding(.horizontal, 14) |
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.meterCard(tint: meter.color, fillOpacity: 0.06, strokeOpacity: 0.10) |
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} |
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HStack(spacing: 12) {
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controlButton( |
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title: "Rotate", |
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symbol: "rotate.right.fill", |
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tint: .orange, |
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action: { meter.rotateScreen() }
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) |
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controlButton( |
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title: "Next", |
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symbol: "chevron.right", |
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tint: .indigo, |
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action: { meter.nextScreen() }
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) |
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} |
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} |
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Spacer(minLength: 0) |
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} else {
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HStack(spacing: 10) {
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controlButton( |
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title: "Prev", |
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symbol: "chevron.left", |
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tint: .indigo, |
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action: { meter.previousScreen() }
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) |
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currentScreenCard |
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.frame(maxWidth: .infinity, minHeight: 82) |
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.padding(.horizontal, 10) |
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.meterCard(tint: meter.color, fillOpacity: 0.06, strokeOpacity: 0.10) |
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controlButton( |
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title: "Rotate", |
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symbol: "rotate.right.fill", |
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tint: .orange, |
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action: { meter.rotateScreen() }
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) |
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controlButton( |
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title: "Next", |
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symbol: "chevron.right", |
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tint: .indigo, |
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action: { meter.nextScreen() }
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) |
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} |
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} |
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} else {
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HStack(spacing: 12) {
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controlButton( |
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title: "Prev", |
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symbol: "chevron.left", |
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tint: .indigo, |
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action: { meter.previousScreen() }
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) |
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currentScreenCard |
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.frame(maxWidth: .infinity, minHeight: 92) |
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.padding(.horizontal, 12) |
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.meterCard(tint: meter.color, fillOpacity: 0.06, strokeOpacity: 0.10) |
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controlButton( |
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title: "Next", |
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symbol: "chevron.right", |
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tint: .indigo, |
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action: { meter.nextScreen() }
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) |
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} |
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controlButton( |
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title: "Rotate Screen", |
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symbol: "rotate.right.fill", |
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tint: .orange, |
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compact: false, |
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action: { meter.rotateScreen() }
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) |
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} |
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} |
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.frame(maxWidth: .infinity, maxHeight: compactLayout ? .infinity : nil, alignment: .topLeading) |
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} |
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@ViewBuilder |
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private var currentScreenCard: some View {
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if meter.reportsCurrentScreenIndex {
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Text(meter.currentScreenDescription) |
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.font((usesExpandedCompactLayout ? Font.title3 : .subheadline).weight(.semibold)) |
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.multilineTextAlignment(.center) |
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} else {
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VStack {
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Image(systemName: "questionmark.square.dashed") |
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.font(.system(size: usesExpandedCompactLayout ? 30 : 24, weight: .semibold)) |
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.foregroundColor(.secondary) |
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} |
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} |
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} |
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private var usesExpandedCompactLayout: Bool {
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compactLayout && (availableSize?.height ?? 0) >= 520 |
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} |
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private func controlButton( |
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title: String, |
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symbol: String, |
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tint: Color, |
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compact: Bool = true, |
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action: @escaping () -> Void |
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) -> some View {
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Button(action: action) {
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VStack(spacing: 10) {
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Image(systemName: symbol) |
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.font(.system(size: compact ? 18 : 20, weight: .semibold)) |
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Text(title) |
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.font(.footnote.weight(.semibold)) |
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.multilineTextAlignment(.center) |
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} |
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.foregroundColor(tint) |
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.frame(maxWidth: .infinity, minHeight: compact ? (usesExpandedCompactLayout ? 112 : 92) : 68) |
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.padding(.horizontal, 8) |
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.meterCard(tint: tint, fillOpacity: 0.10, strokeOpacity: 0.14) |
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} |
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.buttonStyle(.plain) |
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} |
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} |
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struct ControlView_Previews: PreviewProvider {
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static var previews: some View {
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ControlView() |
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} |
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} |