feat(epub): complete wxread parity scope

2026-05-26 09:19:37 +08:00
parent 23182e8b5a
commit 0e7d952fe5
31 changed files with 2619 additions and 1533 deletions
@@ -64,6 +64,15 @@ struct RDEPUBPageLayoutSnapshot {
    let layoutFrame: DTCoreTextLayoutFrame
 #endif

+    var contentBounds: CGRect {
+        let rects = lines.map(\.frame) + attachments.map(\.frame)
+        guard var bounds = rects.first else { return .zero }
+        for rect in rects.dropFirst() {
+            bounds = bounds.union(rect)
+        }
+        return bounds
+    }
+
    func line(containing absoluteIndex: Int) -> RDEPUBPageLine? {
        lines.first { NSLocationInRange(absoluteIndex, $0.stringRange) }
    }
@@ -80,12 +89,44 @@ struct RDEPUBPageLayoutSnapshot {
        attachments.first { $0.frame.insetBy(dx: -hitSlop, dy: -hitSlop).contains(point) }
    }

+    func line(at point: CGPoint, hitSlop: CGFloat = 4) -> RDEPUBPageLine? {
+        lines.first { line in
+            let lineRect = CGRect(
+                x: line.frame.minX,
+                y: line.baselineOrigin.y - line.ascent,
+                width: max(line.frame.width, 1),
+                height: line.ascent + line.descent + line.leading
+            )
+            return lineRect.insetBy(dx: -hitSlop, dy: -hitSlop).contains(point)
+        }
+    }
+
+    func run(at point: CGPoint, hitSlop: CGFloat = 4) -> RDEPUBPageRun? {
+        runs.first { $0.frame.insetBy(dx: -hitSlop, dy: -hitSlop).contains(point) }
+    }
+
    func rects(containing point: CGPoint, in decorations: [RDEPUBTextOverlayDecoration]) -> [RDEPUBTextOverlayDecoration] {
        decorations.filter { decoration in
            decoration.rects.contains { $0.insetBy(dx: -4, dy: -4).contains(point) }
        }
    }

+    func absoluteRange(at point: CGPoint, in decorations: [RDEPUBTextOverlayDecoration]) -> NSRange? {
+        if let attachment = attachment(at: point) {
+            return attachment.stringRange
+        }
+        if let run = run(at: point) {
+            return run.stringRange
+        }
+        let hitDecorations = rects(containing: point, in: decorations)
+        if let mostSpecific = hitDecorations.min(by: { lhs, rhs in
+            lhs.absoluteRange.length < rhs.absoluteRange.length
+        }) {
+            return mostSpecific.absoluteRange
+        }
+        return line(at: point)?.stringRange
+    }
+
 #if canImport(DTCoreText)
    static func build(
        from layoutFrame: DTCoreTextLayoutFrame,