mirror of
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51 lines
1.9 KiB
Swift
51 lines
1.9 KiB
Swift
// Copyright (c) 2024 Proton Technologies AG
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//
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// This file is part of Proton Mail.
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//
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// Proton Mail is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Proton Mail is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Proton Mail. If not, see https://www.gnu.org/licenses/.
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import SwiftUI
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struct LayoutData: Equatable {
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let size: CGSize
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let frameInCoordinateSpace: CGRect
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let safeAreaInsets: EdgeInsets
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}
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extension View {
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func readLayoutData(coordinateSpace: CoordinateSpace, onChange: @escaping (LayoutData) -> Void) -> some View {
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self
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.background(
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GeometryReader(content: { (geometryProxy) in
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Color.clear
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.preference(
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key: SizePreferenceKey.self,
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value: LayoutData(
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size: geometryProxy.size,
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frameInCoordinateSpace: geometryProxy.frame(in: coordinateSpace),
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safeAreaInsets: geometryProxy.safeAreaInsets
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)
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)
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})
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)
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.onPreferenceChange(SizePreferenceKey.self, perform: onChange)
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}
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}
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private struct SizePreferenceKey: PreferenceKey {
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static let defaultValue = LayoutData(size: .zero, frameInCoordinateSpace: CGRect.zero, safeAreaInsets: EdgeInsets())
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static func reduce(value: inout LayoutData, nextValue: () -> LayoutData) {}
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}
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