39 lines
1.2 KiB
Swift
39 lines
1.2 KiB
Swift
//
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// PagerSetAppearModifier.swift
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// PagerTabStrip
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//
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// Copyright © 2021 Xmartlabs SRL. All rights reserved.
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//
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import SwiftUI
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struct PagerSetAppearItemModifier: ViewModifier {
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private var onPageAppear: () -> Void
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init(onPageAppear: @escaping () -> Void) {
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self.onPageAppear = onPageAppear
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}
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func body(content: Content) -> some View {
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content
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.overlay(
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GeometryReader { reader in
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Color.clear
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.onAppear {
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DispatchQueue.main.async {
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let frame = reader.frame(in: .named("PagerViewScrollView"))
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index = Int(round((frame.minX - settings.contentOffset) / settings.width))
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dataStore.setAppear(callback: onPageAppear, at: index)
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}
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}
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}
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)
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}
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@EnvironmentObject private var dataStore: DataStore
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@EnvironmentObject private var settings: PagerSettings
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@Environment(\.pagerTabViewStyle) var style: PagerTabViewStyle
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@State private var index = -1
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}
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