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Ash_AWord/Pods/PSTCollectionView/PSTCollectionView/PSTGridLayoutInfo.h
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2015-04-02 09:37:44 +08:00

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1.2 KiB
Objective-C

//
// PSTGridLayoutInfo.h
// PSPDFKit
//
// Copyright (c) 2012-2013 Peter Steinberger. All rights reserved.
//
#import <UIKit/UIKit.h>
@class PSTGridLayoutSection;
/*
Every PSTCollectionViewLayout has a PSTGridLayoutInfo attached.
Is used extensively in PSTCollectionViewFlowLayout.
*/
@interface PSTGridLayoutInfo : NSObject
@property (nonatomic, strong, readonly) NSArray *sections;
@property (nonatomic, strong) NSDictionary *rowAlignmentOptions;
@property (nonatomic, assign) BOOL usesFloatingHeaderFooter;
// Vertical/horizontal dimension (depending on horizontal)
// Used to create row objects
@property (nonatomic, assign) CGFloat dimension;
@property (nonatomic, assign) BOOL horizontal;
@property (nonatomic, assign) BOOL leftToRight;
@property (nonatomic, assign) CGSize contentSize;
// Frame for specific PSTGridLayoutItem.
- (CGRect)frameForItemAtIndexPath:(NSIndexPath *)indexPath;
// Add new section. Invalidates layout.
- (PSTGridLayoutSection *)addSection;
// forces the layout to recompute on next access
// TODO; what's the parameter for?
- (void)invalidate:(BOOL)arg;
// Make a copy of the current state.
- (PSTGridLayoutInfo *)snapshot;
@end