Create new footer [issue 53] #1
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WalkthroughA new SwiftUI file introduces a card stack interface with animated transitions and drag gesture support. It defines a card data structure, manages card state and index, and implements custom view modifiers and transitions for card animations. Extensions provide drag direction detection, enabling interactive card navigation through upward drags. Changes
Sequence Diagram(s)sequenceDiagram
participant User
participant ContentView
participant CardContentEntity
participant CardTransitionAnimations
User->>ContentView: Drag card upward
ContentView->>ContentView: Detect upward drag (via DragGesture extension)
ContentView->>CardTransitionAnimations: Trigger animation (scale/rotation/move up)
CardTransitionAnimations-->>ContentView: Animation completes
ContentView->>ContentView: Update currentIndex to next card
ContentView->>CardContentEntity: Display next card as top card
Poem
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Docstrings generation was requested by @byvf. * #1 (comment) The following files were modified: * `FackFlowView.swift`
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Note Generated docstrings for this pull request at #2 |
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Actionable comments posted: 1
🧹 Nitpick comments (9)
FackFlowView.swift (9)
1-6: File header doesn't match the actual filenameThe comment header mentions "ContentView.swift" but the file is named "FackFlowView.swift". This naming inconsistency could lead to confusion during development.
-// ContentView.swift +// FackFlowView.swift
16-28: Consider moving sample data out of the viewHardcoding sample data within the view makes the code less maintainable. Consider moving this array to a separate model file or data service.
+// In a separate file like CardData.swift +struct CardData { + static let sampleCards: [CardContentEntity] = [ + CardContentEntity(title: "Red", color: Color.red), + CardContentEntity(title: "Green", color: Color.green), + CardContentEntity(title: "Pink", color: Color.pink), + CardContentEntity(title: "Secondary", color: Color.secondary), + CardContentEntity(title: "Primary", color: Color.primary), + CardContentEntity(title: "Purple", color: Color.purple), + CardContentEntity(title: "Yellow", color: Color.yellow), + CardContentEntity(title: "Brown", color: Color.brown), + CardContentEntity(title: "Cyan", color: Color.cyan), + ] +} // Then in ContentView -@State private var items: [CardContentEntity] = [ - CardContentEntity(title: "Red", color: Color.red), - CardContentEntity(title: "Green", color: Color.green), - CardContentEntity(title: "Pink", color: Color.pink), - CardContentEntity(title: "Secondary", color: Color.secondary), - CardContentEntity(title: "Primary", color: Color.primary), - CardContentEntity(title: "Purple", color: Color.purple), - CardContentEntity(title: "Yellow", color: Color.yellow), - CardContentEntity(title: "Brown", color: Color.brown), - CardContentEntity(title: "Cyan", color: Color.cyan), -] +@State private var items: [CardContentEntity] = CardData.sampleCards
34-52: Extract background card stack into a separate viewThe nested ZStacks make the code harder to read. Consider extracting the background cards into a separate view component for better maintainability.
+struct BackgroundCardStack: View { + let currentIndex: Int + let items: [CardContentEntity] + + var body: some View { + ZStack { + ForEach(1..<4, id: \.self) { offset in + if currentIndex + offset < items.count { + let item = items[currentIndex + offset] + + RoundedRectangle(cornerRadius: 16) + .fill(item.color) + .frame(width: 300, height: 300) + .offset(y: CGFloat(offset * 20)) + .scaleEffect(1 - CGFloat(offset) * 0.05) + .opacity(0.3) + .zIndex(Double(-offset)) + } + } + } + } +} // In ContentView body -ZStack { - ForEach(1..<4, id: \.self) { offset in - if currentIndex + offset < items.count { - let item = items[currentIndex + offset] - - RoundedRectangle(cornerRadius: 16) - .fill(item.color) - .frame(width: 300, height: 300) - .offset(y: CGFloat(offset * 20)) - .scaleEffect(1 - CGFloat(offset) * 0.05) - .opacity(0.3) - .zIndex(Double(-offset)) - } - } -} +BackgroundCardStack(currentIndex: currentIndex, items: items)
54-78: Consider adding support for additional drag directionsThe code only handles upward drags currently, but the DragGesture.Value extension includes properties for all directions. Consider implementing gesture handling for other directions as well.
.gesture( DragGesture() .onEnded { value in if value.isDragGoUp { withAnimation { currentIndex = (currentIndex + 1) % items.count } + } else if value.isDragGoDown { + withAnimation { + // Handle going to previous card + currentIndex = (currentIndex - 1 + items.count) % items.count + } } } )
84-99: Typo in animation modifier names and inconsistent namingThere's a typo in the animation modifier names: "Transaction" should likely be "Transition". Also, the naming is inconsistent between the three modifiers ("Transaction" vs "UP" vs "TransactionRotation").
-struct CardTransactionAnimation: ViewModifier, Animatable { +struct CardTransitionAnimation: ViewModifier, Animatable { // ... } -struct CardUPAnimation: ViewModifier { +struct CardUpAnimation: ViewModifier { // ... } -struct CardTransactionRotationAnimation: ViewModifier { +struct CardTransitionRotationAnimation: ViewModifier { // ... } // Don't forget to update the references in the AnyTransition extension extension AnyTransition { - static var cardScale: AnyTransition = .modifier(active: CardTransactionAnimation(isActive: true), identity: CardTransactionAnimation(isActive: false)) - static var cardRotation: AnyTransition = .modifier(active: CardTransactionRotationAnimation(isActive: true), identity: CardTransactionRotationAnimation(isActive: false)) - static var cardMovedUp: AnyTransition = .modifier(active: CardUPAnimation(isActive: true), identity: CardUPAnimation(isActive: false)) + static var cardScale: AnyTransition = .modifier(active: CardTransitionAnimation(isActive: true), identity: CardTransitionAnimation(isActive: false)) + static var cardRotation: AnyTransition = .modifier(active: CardTransitionRotationAnimation(isActive: true), identity: CardTransitionRotationAnimation(isActive: false)) + static var cardMovedUp: AnyTransition = .modifier(active: CardUpAnimation(isActive: true), identity: CardUpAnimation(isActive: false)) }Also applies to: 102-113, 115-129
109-109: Hard-coded offset value might not be suitable for all device sizesThe -200 offset for the card animation is hard-coded and might be too large for smaller screens. Consider using a relative value or making it responsive to screen size.
- .offset(y: isActive ? -200 : 0) + .offset(y: isActive ? -UIScreen.main.bounds.height * 0.3 : 0)
16-16: Rename ContentView to match file nameThe main view name
ContentViewdoesn't match the file nameFackFlowView.swift. For consistency, rename the view to match the file name.-struct ContentView: View { +struct FackFlowView: View { // ... } // And update the Preview #Preview { - ContentView() + FackFlowView() }
45-48: Use GeometryReader for responsive sizingThe card dimensions and offsets are hard-coded, which may not look good on different device sizes. Consider using GeometryReader to make the layout more responsive.
- RoundedRectangle(cornerRadius: 16) - .fill(item.color) - .frame(width: 300, height: 300) - .offset(y: CGFloat(offset * 20)) - .scaleEffect(1 - CGFloat(offset) * 0.05) + GeometryReader { geometry in + RoundedRectangle(cornerRadius: 16) + .fill(item.color) + .frame( + width: min(geometry.size.width * 0.8, 300), + height: min(geometry.size.width * 0.8, 300) + ) + .offset(y: CGFloat(offset) * geometry.size.height * 0.05) + .scaleEffect(1 - CGFloat(offset) * 0.05) + }
60-60: Add accessibility supportThe text overlay lacks accessibility modifiers. Add appropriate accessibility labels to improve the experience for users with disabilities.
- .overlay(Text(item.title).foregroundColor(.white).font(.title)) + .overlay(Text(item.title).foregroundColor(.white).font(.title)) + .accessibilityLabel("Card \(currentIndex + 1) of \(items.count): \(item.title)") + .accessibilityHint("Swipe up to see the next card")
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📒 Files selected for processing (1)
FackFlowView.swift(1 hunks)
🔇 Additional comments (1)
FackFlowView.swift (1)
10-14: Good model implementationThe
CardContentEntitystruct is well-designed with proper conformance toIdentifiableand clear property naming.
| extension DragGesture.Value { | ||
| var isDragGoUp: Bool { | ||
| return self.translation.height < 0 | ||
| } | ||
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| var isDragGoDown: Bool { | ||
| return self.translation.height > 0 | ||
| } | ||
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| var isDragGoLeft: Bool { | ||
| return self.translation.width < 0 | ||
| } | ||
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| var isDragGoRight: Bool { | ||
| return self.translation.width > 0 | ||
| } | ||
| } |
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🛠️ Refactor suggestion
Add minimum threshold for drag detection
The current implementation detects any non-zero drag value. Consider adding a minimum threshold to avoid triggering animations on small, unintentional drags.
extension DragGesture.Value {
var isDragGoUp: Bool {
- return self.translation.height < 0
+ return self.translation.height < -20 // Requires at least 20 points of movement
}
var isDragGoDown: Bool {
- return self.translation.height > 0
+ return self.translation.height > 20
}
var isDragGoLeft: Bool {
- return self.translation.width < 0
+ return self.translation.width < -20
}
var isDragGoRight: Bool {
- return self.translation.width > 0
+ return self.translation.width > 20
}
}🤖 Prompt for AI Agents
In FackFlowView.swift around lines 137 to 153, the drag direction properties
detect any non-zero translation, causing animations to trigger on minor,
unintentional drags. Add a minimum threshold value (e.g., 10 points) to each
computed property so that the drag direction is only considered true if the
translation exceeds this threshold in the respective direction.
Summary by CodeRabbit