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156 lines
5 KiB
Objective-C
156 lines
5 KiB
Objective-C
/* Definition of class NSCollectionViewFlowLayout
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Copyright (C) 2021 Free Software Foundation, Inc.
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By: Gregory John Casamento
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Date: 30-05-2021
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This file is part of the GNUstep Library.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free
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Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110 USA.
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*/
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#ifndef _NSCollectionViewFlowLayout_h_GNUSTEP_GUI_INCLUDE
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#define _NSCollectionViewFlowLayout_h_GNUSTEP_GUI_INCLUDE
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#import <AppKit/NSCollectionViewLayout.h>
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#import <AppKit/AppKitDefines.h>
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@class NSCollectionViewLayout, NSMutableIndexSet;
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#if OS_API_VERSION(MAC_OS_X_VERSION_10_11, GS_API_LATEST)
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#if defined(__cplusplus)
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extern "C" {
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#endif
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enum
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{
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NSCollectionViewScrollDirectionVertical,
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NSCollectionViewScrollDirectionHorizontal
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};
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typedef NSInteger NSCollectionViewScrollDirection;
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APPKIT_EXPORT NSCollectionViewSupplementaryElementKind NSCollectionElementKindSectionHeader;
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APPKIT_EXPORT NSCollectionViewSupplementaryElementKind NSCollectionElementKindSectionFooter;
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APPKIT_EXPORT_CLASS
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@interface NSCollectionViewFlowLayoutInvalidationContext : NSCollectionViewLayoutInvalidationContext
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{
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BOOL _invalidateFlowLayoutDelegateMetrics;
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BOOL _invalidateFlowLayoutAttributes;
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}
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- (void) setInvalidateFlowLayoutDelegateMetrics: (BOOL)flag;
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- (BOOL) invalidateFlowLayoutDelegateMetrics;
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- (void) setInvalidateFlowLayoutAttributes: (BOOL)flag;
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- (BOOL) invalidateFlowLayoutAttributes;
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@end
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@protocol NSCollectionViewDelegateFlowLayout <NSCollectionViewDelegate>
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- (NSSize) collectionView: (NSCollectionView *)collectionView
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layout: (NSCollectionViewLayout*)collectionViewLayout
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sizeForItemAtIndexPath:(NSIndexPath *)indexPath;
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- (NSEdgeInsets)collectionView: (NSCollectionView *)collectionView
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layout: (NSCollectionViewLayout *)collectionViewLayout
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insetForSectionAtIndex: (NSInteger)section;
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- (CGFloat) collectionView: (NSCollectionView *)collectionView
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layout: (NSCollectionViewLayout *)collectionViewLayout
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minimumLineSpacingForSectionAtIndex: (NSInteger)section;
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- (CGFloat) collectionView: (NSCollectionView *)collectionView
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layout: (NSCollectionViewLayout *)collectionViewLayout
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minimumInteritemSpacingForSectionAtIndex: (NSInteger)section;
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- (NSSize) collectionView: (NSCollectionView *)collectionView
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layout: (NSCollectionViewLayout *)collectionViewLayout
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referenceSizeForHeaderInSection: (NSInteger)section;
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- (NSSize) collectionView: (NSCollectionView *)collectionView
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layout: (NSCollectionViewLayout *)collectionViewLayout
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referenceSizeForFooterInSection: (NSInteger)section;
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@end
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APPKIT_EXPORT_CLASS
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@interface NSCollectionViewFlowLayout : NSCollectionViewLayout
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{
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CGFloat _minimumLineSpacing;
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CGFloat _minimumInteritemSpacing;
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NSSize _itemSize;
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NSSize _estimatedItemSize;
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NSCollectionViewScrollDirection _scrollDirection;
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NSSize _headerReferenceSize;
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NSSize _footerReferenceSize;
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NSEdgeInsets _sectionInset;
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BOOL _sectionHeadersPinToVisibleBounds;
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BOOL _sectionFootersPinToVisibleBounds;
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NSMutableIndexSet *_collapsedSections;
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NSInteger _ds; // deltas for when overflow happens...
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NSInteger _dr;
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}
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- (CGFloat) minimumLineSpacing;
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- (void) setMinimumLineSpacing: (CGFloat)spacing;
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- (CGFloat) minimumInteritemSpacing;
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- (void) setMinimumInteritemSpacing: (CGFloat)spacing;
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- (NSSize) itemSize;
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- (void) setItemSize: (NSSize)itemSize;
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- (NSSize) estimatedItemSize;
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- (void) setEstimatedItemSize: (NSSize)size;
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- (NSCollectionViewScrollDirection) scrollDirection;
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- (void) setScrollDirection: (NSCollectionViewScrollDirection)direction;
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- (NSSize) headerReferenceSize;
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- (void) setHeaderReferenceSize: (NSSize)size;
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- (NSSize) footerReferenceSize;
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- (void) setFooterReferenceSize: (NSSize)size;
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- (NSEdgeInsets) sectionInset;
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- (void) setSectionInset: (NSEdgeInsets)inset;
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- (BOOL) sectionHeadersPinToVisibleBounds;
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- (void) setSectionHeadersPinToVisibleBounds: (BOOL)f;
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- (BOOL) sectionFootersPinToVisibleBounds;
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- (void) setSectionFootersPinToVisibleBounds: (BOOL)f;
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- (BOOL) sectionAtIndexIsCollapsed: (NSUInteger)sectionIndex;
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- (void) collapseSectionAtIndex: (NSUInteger)sectionIndex;
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- (void) expandSectionAtIndex: (NSUInteger)sectionIndex;
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@end
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#if defined(__cplusplus)
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}
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#endif
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#endif /* GS_API_MACOSX */
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#endif /* _NSCollectionViewFlowLayout_h_GNUSTEP_GUI_INCLUDE */
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