//
// FMMosaicLayout.h
// FMMosaicLayout
//
// Created by Julian Villella on 2015-01-30.
// Copyright (c) 2015 Fluid Media. All rights reserved.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.

@class FMMosaicLayout;

typedef NS_ENUM(NSUInteger, FMMosaicCellSize) {
    FMMosaicCellSizeSmall,
    FMMosaicCellSizeBig
};

@protocol FMMosaicLayoutDelegate <UICollectionViewDelegate>

- (NSInteger)collectionView:(UICollectionView *)collectionView layout:(FMMosaicLayout *)collectionViewLayout numberOfColumnsInSection:(NSInteger)section;

@optional

- (FMMosaicCellSize)collectionView:(UICollectionView *)collectionView layout:(FMMosaicLayout *)collectionViewLayout mosaicCellSizeForItemAtIndexPath:(NSIndexPath *)indexPath;
- (UIEdgeInsets)collectionView:(UICollectionView *)collectionView layout:(FMMosaicLayout *)collectionViewLayout insetForSectionAtIndex:(NSInteger)section;
- (CGFloat)collectionView:(UICollectionView *)collectionView layout:(FMMosaicLayout *)collectionViewLayout interitemSpacingForSectionAtIndex:(NSInteger)section;

// Header/Footer
- (CGFloat)collectionView:(UICollectionView *)collectionView layout:(FMMosaicLayout *)collectionViewLayout
 heightForHeaderInSection:(NSInteger)section;
- (CGFloat)collectionView:(UICollectionView *)collectionView layout:(FMMosaicLayout *)collectionViewLayout
 heightForFooterInSection:(NSInteger)section;
- (BOOL)headerShouldOverlayContentInCollectionView:(UICollectionView *)collectionView
                                            layout:(FMMosaicLayout *)collectionViewLayout;
- (BOOL)footerShouldOverlayContentInCollectionView:(UICollectionView *)collectionView
                                            layout:(FMMosaicLayout *)collectionViewLayout;

@end

@interface FMMosaicLayout : UICollectionViewLayout

// Not used, just for backwards compatability
@property (nonatomic, weak) id<FMMosaicLayoutDelegate> delegate;

@end
