将 PDF 成品阅读控制器下沉为 RDPDFReaderView SDK，并修复手机横屏单页连续竖滑

SDK 化收尾： - 新增 RDPDFReaderView 本地 pod（阅读容器、成品控制器、划线/注释、画笔、目录/设置面板、主题与持久化契约），Demo 精简为 PDFKit 页面提供者 + 持久化宿主 - Podfile/工程接入 RDPDFReaderView 与 SnapKit，示例书改用 PDF 阅读器示例文件手机横屏单页竖滑修复： - cell 高度改为宽度适配后的纸张高度（sizeForItemAt + 宿主按页提供纵横比），纵向超出一屏的内容由外层 collectionView 连续滚动承接，不再被裁掉 - 页面内部不再开启同向嵌套的兜底竖向拖动，修复外层滚动被吞、无法滚到下一页 - 修复 applyContentSize 先评估拖动开关后写 contentSize 的顺序缺陷 - 页码按视口中心命中 cell 计算，补 didEndDragging 兜底；旋转重锚点与 transitionToPage 改用真实布局位置 - 横竖屏同为竖滑时也重建 cell 并刷新全部可见页的适配配置 - 横屏单页点击不再跳页，只显隐工具栏；翻页交给连续竖滑 Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-07-15 18:49:44 +09:00
parent a17164d1a9
commit 1422461224
347 changed files with 9912 additions and 3941 deletions
@@ -0,0 +1,68 @@
+import UIKit
+import SnapKit
+
+/// 阅读器 Chrome 的安装、尺寸更新与显示动画。
+extension RDPDFReaderView {
+    enum ToolViewPosition { case top, bottom }
+
+    func toggleToolbars() {
+        isToolViewVisible.toggle()
+        if isToolViewVisible {
+            if let topToolView { showToolView(topToolView, position: .top) }
+            if let bottomToolView { showToolView(bottomToolView, position: .bottom) }
+        } else {
+            if let topToolView { hideToolView(topToolView, position: .top) }
+            if let bottomToolView { hideToolView(bottomToolView, position: .bottom) }
+        }
+        delegate?.toolViewVisibilityChanged?(readerView: self, isVisible: isToolViewVisible)
+    }
+
+    func showToolView(_ toolView: UIView, position: ToolViewPosition) {
+        installToolViewIfNeeded(toolView, position: position)
+        layoutIfNeeded()
+        toolView.transform = CGAffineTransform(translationX: 0, y: position == .top ? -toolView.bounds.height : toolView.bounds.height)
+        UIView.animate(withDuration: 0.25) { toolView.transform = .identity }
+    }
+
+    func hideToolView(_ toolView: UIView, position: ToolViewPosition) {
+        UIView.animate(withDuration: 0.25, animations: {
+            toolView.transform = CGAffineTransform(translationX: 0, y: position == .top ? -toolView.bounds.height : toolView.bounds.height)
+        }) { _ in
+            toolView.removeFromSuperview()
+            toolView.transform = .identity
+        }
+    }
+
+    func installToolViewIfNeeded(_ toolView: UIView, position: ToolViewPosition) {
+        guard toolView.superview !== self else { return }
+        toolView.removeFromSuperview()
+        addSubview(toolView)
+
+        let heightConstraint: Constraint
+        switch position {
+        case .top:
+            topToolViewHeightConstraint?.deactivate()
+            var height: Constraint!
+            toolView.snp.makeConstraints { make in
+                make.leading.trailing.top.equalToSuperview()
+                height = make.height.equalTo(safeAreaInsets.top + 52).constraint
+            }
+            heightConstraint = height
+            topToolViewHeightConstraint = heightConstraint
+        case .bottom:
+            bottomToolViewHeightConstraint?.deactivate()
+            var height: Constraint!
+            toolView.snp.makeConstraints { make in
+                make.leading.trailing.bottom.equalToSuperview()
+                height = make.height.equalTo(safeAreaInsets.bottom + 52).constraint
+            }
+            heightConstraint = height
+            bottomToolViewHeightConstraint = heightConstraint
+        }
+    }
+
+    func updateToolViewHeightConstraintsIfNeeded() {
+        topToolViewHeightConstraint?.update(offset: safeAreaInsets.top + 52)
+        bottomToolViewHeightConstraint?.update(offset: safeAreaInsets.bottom + 52)
+    }
+}