d0efe3f2cc
- 新增 RDEPUBSafeArea：参考 GKNavigationBarSwift 的 keyWindow 三级查找与临时 window 兜底 - 移除 reflowableContentInsets 中 top/bottom 40 的固定默认值，改按设备真实安全区生成 - 各取安全区处的 ?? .zero 兜底改为回退到 key window 值 - DEBUG 构建下为文本可读区域绘制红色边框，方便查看排版范围 Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
99 lines
3.6 KiB
Swift
99 lines
3.6 KiB
Swift
import UIKit
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enum RDEPUBTextPageLayoutMetrics {
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static let pageNumberTrailingPadding: CGFloat = 4
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static let pageNumberFooterPadding: CGFloat = 8
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static let pageNumberReservedHeight: CGFloat = ceil(UIFont.systemFont(ofSize: 13).lineHeight) + pageNumberFooterPadding
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static func contentInsets(
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configuration: RDEPUBReaderConfiguration,
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safeAreaInsets: UIEdgeInsets
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) -> UIEdgeInsets {
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let configInsets = configuration.reflowableContentInsets
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return UIEdgeInsets(
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top: max(configInsets.top, safeAreaInsets.top),
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left: max(configInsets.left, safeAreaInsets.left),
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bottom: max(configInsets.bottom, safeAreaInsets.bottom) + pageNumberReservedHeight,
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right: max(configInsets.right, safeAreaInsets.right)
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)
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}
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}
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final class RDEPUBReaderEnvironment {
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weak var controller: RDEPUBReaderController?
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weak var readerView: RDReaderView?
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var displayEnvironment: any RDEPUBReaderDisplayEnvironment
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init(
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controller: RDEPUBReaderController,
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readerView: RDReaderView,
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displayEnvironment: any RDEPUBReaderDisplayEnvironment
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) {
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self.controller = controller
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self.readerView = readerView
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self.displayEnvironment = displayEnvironment
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}
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func currentLayoutContext(configuration: RDEPUBReaderConfiguration) -> RDEPUBNavigatorLayoutContext {
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let containerSize = readerView?.bounds.size ?? .zero
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let viewSize = controller?.view.bounds.size ?? containerSize
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let resolvedSize = containerSize == .zero ? viewSize : containerSize
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return RDEPUBNavigatorLayoutContext(
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containerSize: resolvedSize,
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pagesPerScreen: readerView?.pagesPerScreen ?? 1,
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safeAreaInsets: RDEPUBSafeArea.resolve(controller?.view.safeAreaInsets),
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userInterfaceIdiom: controller?.traitCollection.userInterfaceIdiom ?? .phone,
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reflowableContentInsets: configuration.reflowableContentInsets
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)
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}
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func currentTextRenderStyle(configuration: RDEPUBReaderConfiguration) -> RDEPUBTextRenderStyle {
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let font = configuration.fontChoice.font(ofSize: configuration.fontSize)
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let lineSpacing = max(font.lineHeight * (configuration.lineHeightMultiple - 1), 4)
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return RDEPUBTextRenderStyle(
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font: font,
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lineSpacing: lineSpacing,
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textColor: configuration.theme.contentTextColor,
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backgroundColor: configuration.theme.contentBackgroundColor
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)
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}
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func currentTextLayoutConfig(
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configuration: RDEPUBReaderConfiguration,
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pageSize: CGSize
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) -> RDEPUBTextLayoutConfig {
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let safeAreaInsets = RDEPUBSafeArea.resolve(controller?.view.safeAreaInsets)
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return RDEPUBTextLayoutConfig(
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frameWidth: max(pageSize.width, 1),
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frameHeight: max(pageSize.height, 1),
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edgeInsets: RDEPUBTextPageLayoutMetrics.contentInsets(
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configuration: configuration,
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safeAreaInsets: safeAreaInsets
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),
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numberOfColumns: configuration.numberOfColumns,
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columnGap: configuration.columnGap,
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avoidOrphans: false,
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avoidWidows: false,
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avoidPageBreakInsideEnabled: true,
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hyphenation: true,
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imageMaxHeightRatio: 0.85,
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fallbackViewportSize: displayEnvironment.fallbackViewportSize
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)
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}
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var currentBrightness: CGFloat {
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get { displayEnvironment.currentBrightness }
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set { displayEnvironment.currentBrightness = newValue }
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}
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var fallbackViewportSize: CGSize {
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displayEnvironment.fallbackViewportSize
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}
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}
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