@class NSLock, PDFDocument; @interface PDFViewLayoutPrivate : NSObject { id delegate; BOOL delegateKnowsMargins; BOOL delegateKnowsDisplayMode; BOOL delegateKnowsDisplayAsBook; BOOL delegateKnowsDisplayBox; BOOL delegateKnowsDisplayRTL; BOOL delegateKnowsDisplaysDirection; BOOL delegateKnowsDocumentMargins; BOOL delegateKnowsIsUsingPageViewController; PDFDocument *document; unsigned long long pageCount; NSLock *pageLayoutLock; struct CGRect { struct CGPoint { double x0; double x1; } x0; struct CGSize { double x0; double x1; } x1; } *pageLayoutBounds; struct CGSize { double width; double height; } singlePageContinuousSize; struct CGSize { double width; double height; } twoUpContinousSize; long long cachedContinuousSizeDisplayDirection; } - (void).cxx_destruct; @end