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[example/CustomCollectionView] Implement MosaicCollectionLayoutDelegate (#28)

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* Implement MosaicCollectionLayoutDelegate

* Update licenses

* Address comments

* Fix license
This commit is contained in:
Huy Nguyen
2017-05-14 20:03:22 +01:00
committed by Adlai Holler
parent d4725a51f2
commit 7dd83615c1
8 changed files with 230 additions and 293 deletions
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50
examples/CustomCollectionView/Sample/ViewController.m
View File

@@ -1,24 +1,25 @@
//
// ViewController.m
// Sample
// Texture
//
// Copyright (c) 2014-present, Facebook, Inc. All rights reserved.
// This source code is licensed under the BSD-style license found in the
// LICENSE file in the root directory of this source tree. An additional grant
// of patent rights can be found in the PATENTS file in the same directory.
// LICENSE file in the /ASDK-Licenses directory of this source tree. An additional
// grant of patent rights can be found in the PATENTS file in the same directory.
//
// 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
// FACEBOOK 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.
// Modifications to this file made after 4/13/2017 are: Copyright (c) 2017-present,
// Pinterest, Inc. Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
#import "ViewController.h"
#import <AsyncDisplayKit/AsyncDisplayKit.h>
#import "MosaicCollectionViewLayout.h"
#import <AsyncDisplayKit/ASCollectionNode+Beta.h>
#import "MosaicCollectionLayoutDelegate.h"
#import "ImageCellNode.h"
#import "ImageCollectionViewCell.h"
@@ -42,11 +43,8 @@ static NSUInteger kNumberOfImages = 14;
- (instancetype)init
{
MosaicCollectionViewLayout *layout = [[MosaicCollectionViewLayout alloc] init];
layout.numberOfColumns = 2;
layout.headerHeight = 44.0;
_collectionNode = [[ASCollectionNode alloc] initWithCollectionViewLayout:layout];
MosaicCollectionLayoutDelegate *layoutDelegate = [[MosaicCollectionLayoutDelegate alloc] initWithNumberOfColumns:2 headerHeight:44.0];
_collectionNode = [[ASCollectionNode alloc] initWithLayoutDelegate:layoutDelegate layoutFacilitator:nil];
_collectionNode.dataSource = self;
_collectionNode.delegate = self;
_collectionNode.backgroundColor = [UIColor whiteColor];
@@ -98,17 +96,11 @@ static NSUInteger kNumberOfImages = 14;
};
}
// The below 2 methods are required by ASCollectionViewLayoutInspecting, but ASCollectionLayout and its layout delegate are the ones that really determine the size ranges and directions
// TODO Remove these methods once a layout inspector is no longer required under ASCollectionLayout mode
- (ASSizeRange)collectionView:(ASCollectionView *)collectionView constrainedSizeForNodeAtIndexPath:(NSIndexPath *)indexPath
{
MosaicCollectionViewLayout *layout = (MosaicCollectionViewLayout *)[collectionView collectionViewLayout];
return ASSizeRangeMake(CGSizeZero, [layout itemSizeAtIndexPath:indexPath]);
}
- (ASSizeRange)collectionView:(ASCollectionView *)collectionView constrainedSizeForSupplementaryNodeOfKind:(NSString *)kind atIndexPath:(NSIndexPath *)indexPath
{
MosaicCollectionViewLayout *layout = (MosaicCollectionViewLayout *)[collectionView collectionViewLayout];
return ASSizeRangeMake(CGSizeZero, [layout headerSizeForSection:indexPath.section]);
return ASSizeRangeZero;
}
- (ASScrollDirection)scrollableDirections
@@ -146,16 +138,6 @@ static NSUInteger kNumberOfImages = 14;
return [_sections[section] count];
}
- (CGSize)collectionView:(ASCollectionNode *)collectionNode layout:(UICollectionViewLayout *)collectionViewLayout originalItemSizeAtIndexPath:(NSIndexPath *)indexPath
{
ASCellNode *cellNode = [collectionNode nodeForItemAtIndexPath:indexPath];
if ([cellNode isKindOfClass:[ImageCellNode class]]) {
return [[(ImageCellNode *)cellNode image] size];
} else {
return CGSizeMake(100, 100); // In kShowUICollectionViewCells = YES mode, make those cells 100x100.
}
}
- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
return [_collectionNode.view dequeueReusableCellWithReuseIdentifier:kReuseIdentifier forIndexPath:indexPath];