I am trying to recreate the apple calendar in swiftui but I have issues creating scroll layout.
So I want to have:
When I scroll horizontally the hours on the side have to stay fixed but the header with the day number day String and the full day events have to scroll
When I scroll vertically the hours on the side have to move but the header don't
For the moment I have :
HStack(alignment: .top, spacing:0) {
// The hours on the side
LateralHours(height: geometry.size.height * 24/10) . offset(y: -offset)
ScrollViewReader { proxy in
ScrollView (.horizontal, showsIndicators: false) {
VStack {
// The day number and the full day events
Header(width: width)
ScrollView {
LazyHStack (spacing: 0) {
ForEach($loadedDays, id: \.self) { day in
// The day grid with the events
DayContentView(
cellHeight: geometry.size.height / 10,
width: width,
selectedEvent: $selectedEvent,
day: day,
store: $store,
modifiedEvent: $modifiedEvent
)
}
}
.frame(height: 24*geometry.size.height / 10)
// This code block is used to track the position of the scrollview position
.background( GeometryReader {
Color.clear.preference(key: ScrollOffsetPreferenceKey.self,
value: -$0.frame(in: .named("scroll")).origin.y)
})
.onPreferenceChange(ScrollOffsetPreferenceKey.self) { value in
offset = value
}
}
.coordinateSpace(name: "scroll")
}
}
.scrollTargetBehavior(.viewAligned)
.defaultScrollAnchor(.leading)
}
.scrollPosition(id: $position)
.frame(alignment: .topLeading)
}
So the hours on the side are in none of the scrollViews they are only modified through the .offset with the vertical scrollView position. My problem is that the .offset seems to be kind of slow and my app is slowed down is there a better modifed than .offset or do you know a more efficient way to do this ?
RafaelSM1
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