d7fcda345d
- Rename source module from RDReaderView to RDEpubReaderView - Move all source files from Sources/RDReaderView/ to Sources/RDEpubReaderView/ - Update podspec: RDReaderView.podspec -> RDEpubReaderView.podspec - Update Podfile, demo project, and CocoaPods config for new pod name - Delete old RDReaderView pod support files from ReadViewDemo/Pods - Add new RDEpubReaderView pod support files - Update documentation (API ref, architecture, UML, conventions, etc.) - Add FixedLayoutRotationTests - Update .gitignore: exclude .DS_Store, manual unpack backups, _ssoft-output
68 lines
2.6 KiB
Swift
68 lines
2.6 KiB
Swift
import UIKit
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/// Device-level safe area lookup modeled after GKNavigationBarSwift.
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/// Reads the real safe area from the key window so correct values are
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/// available even before a view has been laid out in the hierarchy.
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/// Must be called on the main thread.
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public enum RDEPUBSafeArea {
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/// Minimum text margins applied when the device safe area on an edge is
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/// smaller (e.g. no notch / no home indicator). These are aesthetic
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/// paddings, not approximations of the safe area itself.
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public static let minimumVerticalTextMargin: CGFloat = 20
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public static let minimumHorizontalTextMargin: CGFloat = 16
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public static func keyWindow() -> UIWindow? {
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let scenes = UIApplication.shared.connectedScenes
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.compactMap { $0 as? UIWindowScene }
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if let window = scenes
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.filter({ $0.activationState == .foregroundActive })
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.flatMap({ $0.windows })
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.first(where: { $0.isKeyWindow }) {
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return window
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}
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if let window = scenes
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.flatMap({ $0.windows })
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.first(where: { $0.isKeyWindow }) {
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return window
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}
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return UIApplication.shared.delegate?.window ?? nil
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}
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public static func insets() -> UIEdgeInsets {
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if let window = keyWindow() {
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return window.safeAreaInsets
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}
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// No key window yet (early launch): create a detached window to read
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// the device safe area, same fallback as GKNavigationBarSwift.
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let window = UIWindow(frame: UIScreen.main.bounds)
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if window.safeAreaInsets.bottom <= 0 {
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window.rootViewController = UIViewController()
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}
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return window.safeAreaInsets
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}
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/// Prefers insets measured from a view already installed in the hierarchy;
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/// falls back to the key-window insets when the view is not laid out yet
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/// and reports .zero.
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public static func resolve(_ measuredInsets: UIEdgeInsets?) -> UIEdgeInsets {
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if let measuredInsets, measuredInsets != .zero {
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return measuredInsets
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}
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return insets()
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}
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/// Default reflowable content insets derived from the live device safe
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/// area instead of hard-coded heights.
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public static func defaultReflowableContentInsets() -> UIEdgeInsets {
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let safe = insets()
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return UIEdgeInsets(
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top: max(safe.top, minimumVerticalTextMargin),
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left: max(safe.left, minimumHorizontalTextMargin),
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bottom: max(safe.bottom, minimumVerticalTextMargin),
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right: max(safe.right, minimumHorizontalTextMargin)
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)
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}
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}
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