feat: 交互协调器拆分、附件提示、暗色图片适配、选区放大镜及文档清理

- 拆分 ContentDelegates/TextContentView 为独立协调器（InteractionCoordinator、LocationResolution、ExternalLinks、AttachmentTooltip） - 新增 RDEPUBAttachmentTooltipView/OverlayView 附件气泡提示 - 新增 RDEPUBDarkImageAdjuster 暗色模式图片亮度适配 - 新增 RDEPUBSelectionLoupeView 选区放大镜 - 新增 MetadataParseWorker/CancellationController 元数据解析取消机制 - 重构 PresentationRuntime/PaginationCoordinator 精简职责 - 优化 ChapterLoader/WarmupOrchestrator 异步章节加载 - CFI 模块微调与 NoteModels 更新 - 清理冗余文档，更新架构/UML/业务逻辑文档 Co-Authored-By: Claude <noreply@anthropic.com>
2026-06-24 17:47:24 +08:00
parent 7de661eb54
commit d15f20b097
59 changed files with 4522 additions and 7220 deletions
@@ -0,0 +1,241 @@
+import UIKit
+
+final class RDEPUBTextContentInteractionCoordinator: NSObject {
+
+    enum SelectionInteractionState: Equatable {
+        case idle
+        case selectionPending
+        case selecting
+        case selectionActive
+        case adjustingHandle
+    }
+
+    struct Dependencies {
+        let hasRenderableContent: () -> Bool
+        let currentSelectionProvider: () -> RDEPUBSelection?
+        let isSelectionControllerSelecting: () -> Bool
+        let hasActiveSelection: () -> Bool
+        let selectionHandleAtPoint: (CGPoint) -> RDEPUBTextSelectionController.BoundaryHandle?
+        let selectionContainsPoint: (CGPoint) -> Bool
+        let renderPointForGesture: (UIGestureRecognizer) -> CGPoint
+        let renderPointForTouch: (UITouch) -> CGPoint
+        let performLongPressSelection: (UILongPressGestureRecognizer) -> Void
+        let performPanSelection: (UIPanGestureRecognizer) -> Void
+        let adjustSelection: (RDEPUBTextSelectionController.BoundaryHandle, CGPoint) -> Void
+        let presentLoupeAtPoint: (CGPoint) -> Void
+        let dismissLoupe: () -> Void
+        let showSelectionMenu: () -> Void
+        let hideSelectionMenu: () -> Void
+        let selectionTapSuppressionDidChange: (Bool) -> Void
+        let selectionPagingSuppressionDidChange: (Bool) -> Void
+    }
+
+    private let dependencies: Dependencies
+
+    private var activeSelectionHandle: RDEPUBTextSelectionController.BoundaryHandle?
+
+    private(set) var interactionState: SelectionInteractionState = .idle
+
+    var isInteractionInProgress: Bool {
+        interactionState != .idle
+    }
+
+    init(dependencies: Dependencies) {
+        self.dependencies = dependencies
+        super.init()
+    }
+
+    func handleLongPress(_ gesture: UILongPressGestureRecognizer) {
+        dependencies.performLongPressSelection(gesture)
+
+        switch gesture.state {
+        case .began:
+            activeSelectionHandle = nil
+            updateSelectionInteractionState(.selecting)
+            dependencies.hideSelectionMenu()
+            dependencies.presentLoupeAtPoint(dependencies.renderPointForGesture(gesture))
+        case .changed:
+            updateSelectionInteractionState(.selecting)
+            dependencies.presentLoupeAtPoint(dependencies.renderPointForGesture(gesture))
+        case .ended:
+            activeSelectionHandle = nil
+            dependencies.dismissLoupe()
+            dependencies.showSelectionMenu()
+        case .cancelled, .failed:
+            activeSelectionHandle = nil
+            dependencies.dismissLoupe()
+        default:
+            break
+        }
+    }
+
+    func handlePan(_ gesture: UIPanGestureRecognizer) {
+        let point = dependencies.renderPointForGesture(gesture)
+
+        if gesture.state == .began, activeSelectionHandle == nil,
+           let handle = dependencies.selectionHandleAtPoint(point) {
+            activeSelectionHandle = handle
+            updateSelectionInteractionState(.adjustingHandle)
+            dependencies.hideSelectionMenu()
+            dependencies.presentLoupeAtPoint(point)
+        }
+
+        if let activeSelectionHandle {
+            dependencies.adjustSelection(activeSelectionHandle, point)
+            dependencies.presentLoupeAtPoint(point)
+        } else {
+            dependencies.performPanSelection(gesture)
+            if dependencies.isSelectionControllerSelecting() {
+                dependencies.presentLoupeAtPoint(point)
+            }
+        }
+
+        switch gesture.state {
+        case .ended:
+            activeSelectionHandle = nil
+            updateSelectionInteractionState(
+                dependencies.currentSelectionProvider() == nil ? .idle : .selectionActive
+            )
+            dependencies.dismissLoupe()
+            dependencies.showSelectionMenu()
+        case .cancelled, .failed:
+            activeSelectionHandle = nil
+            updateSelectionInteractionState(
+                dependencies.currentSelectionProvider() == nil ? .idle : .selectionActive
+            )
+            dependencies.dismissLoupe()
+        default:
+            break
+        }
+    }
+
+    func selectionControllerStateDidChange(_ state: RDEPUBTextSelectionController.InteractionState) {
+        switch state {
+        case .idle:
+            if dependencies.currentSelectionProvider() == nil, activeSelectionHandle == nil {
+                updateSelectionInteractionState(.idle)
+            }
+        case .selecting:
+            updateSelectionInteractionState(.selecting)
+        case .selectionActive:
+            updateSelectionInteractionState(
+                dependencies.currentSelectionProvider() == nil ? .idle : .selectionActive
+            )
+        case .adjustingHandle:
+            updateSelectionInteractionState(.adjustingHandle)
+        }
+    }
+
+    func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
+        guard interactionState == .idle,
+              activeSelectionHandle == nil,
+              dependencies.hasRenderableContent(),
+              let touch = touches.first else {
+            return
+        }
+
+        let point = dependencies.renderPointForTouch(touch)
+        guard dependencies.selectionHandleAtPoint(point) == nil else { return }
+        updateSelectionInteractionState(.selectionPending)
+    }
+
+    func touchesEnded(_ touches: Set<UITouch>, with event: UIEvent?) {
+        resetSelectionPendingIfNeeded()
+    }
+
+    func touchesCancelled(_ touches: Set<UITouch>, with event: UIEvent?) {
+        resetSelectionPendingIfNeeded()
+    }
+
+    func gestureRecognizerShouldBegin(_ gestureRecognizer: UIGestureRecognizer) -> Bool {
+        if gestureRecognizer is UIPanGestureRecognizer {
+            if dependencies.isSelectionControllerSelecting() {
+                return true
+            }
+            let point = dependencies.renderPointForGesture(gestureRecognizer)
+            return dependencies.selectionHandleAtPoint(point) != nil
+        }
+
+        if gestureRecognizer is UILongPressGestureRecognizer {
+            guard dependencies.hasRenderableContent() else {
+                return true
+            }
+            let point = dependencies.renderPointForGesture(gestureRecognizer)
+            if dependencies.selectionHandleAtPoint(point) != nil {
+                return false
+            }
+            if dependencies.hasActiveSelection(), dependencies.selectionContainsPoint(point) {
+                return false
+            }
+            return true
+        }
+
+        return true
+    }
+
+    func gestureRecognizer(_ gestureRecognizer: UIGestureRecognizer, shouldReceive touch: UITouch) -> Bool {
+        guard dependencies.hasRenderableContent() else {
+            return true
+        }
+
+        let point = dependencies.renderPointForTouch(touch)
+        if let handle = dependencies.selectionHandleAtPoint(point) {
+            if gestureRecognizer is UIPanGestureRecognizer {
+                activeSelectionHandle = handle
+                updateSelectionInteractionState(.adjustingHandle)
+                dependencies.hideSelectionMenu()
+                return true
+            }
+            if gestureRecognizer is UILongPressGestureRecognizer || gestureRecognizer is UITapGestureRecognizer {
+                return false
+            }
+        }
+
+        return true
+    }
+
+    func gestureRecognizer(
+        _ gestureRecognizer: UIGestureRecognizer,
+        shouldRecognizeSimultaneouslyWith otherGestureRecognizer: UIGestureRecognizer
+    ) -> Bool {
+        gestureRecognizer is UILongPressGestureRecognizer || gestureRecognizer is UIPanGestureRecognizer
+    }
+
+    func reset() {
+        activeSelectionHandle = nil
+        updateSelectionInteractionState(.idle)
+        dependencies.dismissLoupe()
+    }
+
+    private func resetSelectionPendingIfNeeded() {
+        guard interactionState == .selectionPending else { return }
+        if dependencies.currentSelectionProvider() != nil {
+            updateSelectionInteractionState(.selectionActive)
+        } else {
+            updateSelectionInteractionState(.idle)
+        }
+    }
+
+    private func updateSelectionInteractionState(_ state: SelectionInteractionState) {
+        let previousTapSuppressed = interactionState != .idle
+        let previousPagingSuppressed = shouldSuppressPagingInteraction(for: interactionState)
+        interactionState = state
+        let currentTapSuppressed = interactionState != .idle
+        let currentPagingSuppressed = shouldSuppressPagingInteraction(for: interactionState)
+        if previousTapSuppressed != currentTapSuppressed {
+            dependencies.selectionTapSuppressionDidChange(currentTapSuppressed)
+        }
+        if previousPagingSuppressed != currentPagingSuppressed {
+            dependencies.selectionPagingSuppressionDidChange(currentPagingSuppressed)
+        }
+    }
+
+    private func shouldSuppressPagingInteraction(for state: SelectionInteractionState) -> Bool {
+        switch state {
+        case .idle, .selectionPending, .selectionActive:
+            return false
+        case .selecting, .adjustingHandle:
+            return true
+        }
+    }
+}