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Merge pull request #25 from PureSwift/feature/catalog
Component catalog demo app
2 parents ce028e5 + 2abf648 commit cc60c6a

21 files changed

Lines changed: 620 additions & 79 deletions

‎Demo/App.swiftpm/Sources/Catalog.swift‎

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#if canImport(AndroidSwiftUI)
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import AndroidSwiftUI
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#else
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import SwiftUI
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#endif
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/// A component catalog: one playground per supported SwiftUI feature, navigated
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/// with a `NavigationStack` and a lazy `List`.
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struct ContentView: View {
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var body: some View {
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NavigationStack {
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List(CatalogEntry.all) { entry in
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NavigationLink(entry.title, destination: entry.screen)
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}
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.navigationTitle("Catalog")
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}
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}
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}
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struct CatalogEntry: Identifiable {
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let id: String
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let title: String
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let screen: AnyCatalogScreen
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static let all: [CatalogEntry] = [
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CatalogEntry(id: "text", title: "Text", screen: AnyCatalogScreen(TextPlayground())),
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CatalogEntry(id: "button", title: "Button", screen: AnyCatalogScreen(ButtonPlayground())),
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CatalogEntry(id: "toggle", title: "Toggle", screen: AnyCatalogScreen(TogglePlayground())),
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CatalogEntry(id: "slider", title: "Slider", screen: AnyCatalogScreen(SliderPlayground())),
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CatalogEntry(id: "textfield", title: "TextField", screen: AnyCatalogScreen(TextFieldPlayground())),
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CatalogEntry(id: "picker", title: "Picker", screen: AnyCatalogScreen(PickerPlayground())),
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CatalogEntry(id: "progress", title: "ProgressView", screen: AnyCatalogScreen(ProgressViewPlayground())),
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CatalogEntry(id: "stack", title: "Stacks", screen: AnyCatalogScreen(StackPlayground())),
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CatalogEntry(id: "spacer", title: "Spacer & Divider", screen: AnyCatalogScreen(SpacerDividerPlayground())),
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CatalogEntry(id: "color", title: "Color", screen: AnyCatalogScreen(ColorPlayground())),
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CatalogEntry(id: "scroll", title: "ScrollView", screen: AnyCatalogScreen(ScrollViewPlayground())),
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CatalogEntry(id: "list", title: "List", screen: AnyCatalogScreen(ListPlayground())),
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CatalogEntry(id: "grid", title: "Grid", screen: AnyCatalogScreen(GridPlayground())),
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CatalogEntry(id: "modifier", title: "Modifiers", screen: AnyCatalogScreen(ModifierPlayground())),
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CatalogEntry(id: "navigation", title: "Navigation", screen: AnyCatalogScreen(NavigationPlayground())),
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CatalogEntry(id: "tab", title: "TabView", screen: AnyCatalogScreen(TabViewPlayground())),
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CatalogEntry(id: "sheet", title: "Sheet", screen: AnyCatalogScreen(SheetPlayground())),
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CatalogEntry(id: "alert", title: "Alert", screen: AnyCatalogScreen(AlertPlayground())),
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CatalogEntry(id: "state", title: "State", screen: AnyCatalogScreen(StatePlayground())),
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CatalogEntry(id: "environment", title: "Environment", screen: AnyCatalogScreen(EnvironmentPlayground())),
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CatalogEntry(id: "observable", title: "Observable", screen: AnyCatalogScreen(ObservablePlayground())),
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]
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}

‎Demo/App.swiftpm/Sources/CatalogSupport.swift‎

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#if canImport(AndroidSwiftUI)
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import AndroidSwiftUI
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#else
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import SwiftUI
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#endif
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/// Type-erased catalog screen (a small AnyView shim usable as a navigation
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/// destination while keeping the entry list homogeneous).
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struct AnyCatalogScreen: View {
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private let content: AnyView
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init<V: View>(_ view: V) { self.content = AnyView(view) }
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var body: some View { content }
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}
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/// A titled example row shared by the playgrounds.
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struct Example<Content: View>: View {
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let title: String
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let content: Content
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init(_ title: String, @ViewBuilder content: () -> Content) {
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self.title = title
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self.content = content()
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}
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var body: some View {
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VStack(alignment: .leading, spacing: 8) {
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Text(title)
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content
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Divider()
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}
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.padding()
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}
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}

‎Demo/App.swiftpm/Sources/ContainerPlaygrounds.swift‎

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#if canImport(AndroidSwiftUI)
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import AndroidSwiftUI
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#else
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import SwiftUI
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#endif
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struct ListPlayground: View {
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@State private var rows = (1...25).map(CatalogRow.init)
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var body: some View {
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List(rows) { row in
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Text(row.title)
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}
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.refreshable {
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try? await Task.sleep(for: .seconds(1))
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rows.insert(CatalogRow(id: rows.count + 1), at: 0)
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}
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}
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}
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struct CatalogRow: Identifiable {
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let id: Int
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var title: String { "Row \(id)" }
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}
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struct GridPlayground: View {
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var body: some View {
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ScrollView {
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VStack(alignment: .leading, spacing: 0) {
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Example("Three fixed columns") {
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LazyVGrid(columns: [GridItem(.flexible()), GridItem(.flexible()), GridItem(.flexible())]) {
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ForEach(1...9, id: \.self) { n in
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Text("\(n)").padding().background(Color.blue).cornerRadius(6)
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}
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}
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}
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Example("Adaptive columns") {
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LazyVGrid(columns: [GridItem(.adaptive(minimum: 80))]) {
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ForEach(1...8, id: \.self) { n in
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Text("Item \(n)").padding().background(Color.orange).cornerRadius(6)
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}
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}
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}
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Example("Two rows, horizontal") {
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LazyHGrid(rows: [GridItem(.flexible()), GridItem(.flexible())]) {
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ForEach(1...8, id: \.self) { n in
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Text("Cell \(n)").padding().background(Color.green).cornerRadius(6)
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}
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}
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.frame(height: 160)
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}
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}
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}
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}
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}
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struct ModifierPlayground: View {
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var body: some View {
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ScrollView {
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VStack(alignment: .leading, spacing: 0) {
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Example("Padding") { Text("Padded").padding().background(Color.blue) }
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Example("Frame 200x60") { Text("Fixed").frame(width: 200, height: 60).background(Color.green) }
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Example("Background") { Text("Colored").padding().background(Color.orange) }
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Example("Corner radius") { Text("Rounded").padding().background(Color.purple).cornerRadius(16) }
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Example("Offset") { Text("Shifted").offset(x: 30, y: 0).background(Color.red) }
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Example("Rotation") { Text("Rotated").padding().background(Color.yellow).rotationEffect(.degrees(15)) }
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Example("Scale") { Text("Scaled").padding().background(Color.pink).scaleEffect(1.4) }
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Example("Opacity") { Text("Faded").padding().background(Color.blue).opacity(0.4) }
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}
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}
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}
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}

‎Demo/App.swiftpm/Sources/ControlPlaygrounds.swift‎

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#if canImport(AndroidSwiftUI)
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import AndroidSwiftUI
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#else
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import SwiftUI
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#endif
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struct TextPlayground: View {
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@State private var counter = 0
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var body: some View {
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ScrollView {
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VStack(alignment: .leading, spacing: 0) {
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Example("Plain") { Text("Hello, world") }
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Example("Verbatim") { Text(verbatim: "Raw string, no interpolation") }
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Example("Interpolated") { Text("Counter is \(counter)") }
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Example("Bump the counter") { Button("Increment") { counter += 1 } }
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Example("Multiline") {
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Text("A longer passage of text that wraps onto multiple lines when it no longer fits within the width of the screen.")
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}
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Example("Styled") {
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Text("Blue on a rounded chip")
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.padding()
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.background(Color.blue)
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.cornerRadius(12)
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}
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}
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}
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}
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}
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struct ButtonPlayground: View {
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@State private var taps = 0
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var body: some View {
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ScrollView {
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VStack(alignment: .leading, spacing: 0) {
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Example("Taps: \(taps)") { Text("Tap any button below") }
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Example("Title initializer") { Button("Tap me") { taps += 1 } }
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Example("Label closure") {
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Button(action: { taps += 1 }) { Text("Custom label") }
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}
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Example("Styled label") {
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Button(action: { taps += 1 }) {
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Text("Padded label")
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.padding()
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.background(Color.green)
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.cornerRadius(8)
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}
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}
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Example("Reset") { Button("Reset to zero") { taps = 0 } }
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}
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}
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}
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}
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struct TogglePlayground: View {
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@State private var a = false
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@State private var b = true
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var body: some View {
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ScrollView {
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VStack(alignment: .leading, spacing: 0) {
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Example("Off by default") {
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VStack(alignment: .leading, spacing: 8) {
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Toggle("Enable feature", isOn: $a)
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Text(a ? "Feature is on" : "Feature is off")
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}
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}
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Example("On by default") {
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VStack(alignment: .leading, spacing: 8) {
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Toggle("Notifications", isOn: $b)
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Text(b ? "Notifications on" : "Notifications off")
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}
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}
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}
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}
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}
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}
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struct SliderPlayground: View {
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@State private var unit = 0.5
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@State private var wide = 25.0
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var body: some View {
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ScrollView {
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VStack(alignment: .leading, spacing: 0) {
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Example("0...1") {
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VStack(alignment: .leading, spacing: 8) {
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Slider(value: $unit, in: 0...1)
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Text("Value: \(Int(unit * 100))%")
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}
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}
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Example("0...100") {
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VStack(alignment: .leading, spacing: 8) {
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Slider(value: $wide, in: 0...100)
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Text("Value: \(Int(wide))")
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}
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}
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}
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}
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}
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}
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struct TextFieldPlayground: View {
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@State private var name = ""
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@State private var city = ""
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var body: some View {
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ScrollView {
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VStack(alignment: .leading, spacing: 0) {
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Example("Name") {
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VStack(alignment: .leading, spacing: 8) {
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TextField("Your name", text: $name)
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Text(name.isEmpty ? "Nothing typed yet" : "Hello, \(name)")
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}
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}
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Example("City") {
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VStack(alignment: .leading, spacing: 8) {
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TextField("Your city", text: $city)
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Text(city.isEmpty ? "—" : "You are in \(city)")
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}
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}
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}
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}
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}
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}
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struct PickerPlayground: View {
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@State private var fruit = "Apple"
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@State private var size = 1
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var body: some View {
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ScrollView {
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VStack(alignment: .leading, spacing: 0) {
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Example("String selection") {
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VStack(alignment: .leading, spacing: 8) {
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Picker("Fruit", selection: $fruit) {
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Text("Apple").tag("Apple")
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Text("Banana").tag("Banana")
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Text("Cherry").tag("Cherry")
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}
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Text("Selected: \(fruit)")
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}
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}
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Example("Int selection") {
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VStack(alignment: .leading, spacing: 8) {
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Picker("Size", selection: $size) {
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Text("Small").tag(0)
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Text("Medium").tag(1)
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Text("Large").tag(2)
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}
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Text("Size index: \(size)")
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}
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}
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}
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}
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}
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}
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struct ProgressViewPlayground: View {
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@State private var progress = 0.25
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var body: some View {
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ScrollView {
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VStack(alignment: .leading, spacing: 0) {
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Example("Indeterminate") { ProgressView() }
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Example("Determinate") {
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VStack(alignment: .leading, spacing: 8) {
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ProgressView(value: progress)
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Text("\(Int(progress * 100))%")
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Button("Advance") { progress = progress >= 1 ? 0 : progress + 0.25 }
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}
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}
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}
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}
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}
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}

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