mirror of
https://github.com/Swiftgram/Telegram-iOS.git
synced 2025-12-17 03:40:18 +00:00
587d2b2132
# Conflicts: # AsyncDisplayKit.xcodeproj/project.pbxproj # Source/ASDisplayNode.mm # Source/ASMapNode.mm # Source/Details/ASDataController.mm # Source/Details/ASPINRemoteImageDownloader.h # Source/Details/ASPINRemoteImageDownloader.m
91 lines
3.8 KiB
Objective-C
91 lines
3.8 KiB
Objective-C
//
|
|
// ASCollectionGalleryLayoutDelegate.m
|
|
// Texture
|
|
//
|
|
// Copyright (c) 2017-present, Pinterest, Inc. All rights reserved.
|
|
// 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
|
|
//
|
|
|
|
#ifndef MINIMAL_ASDK
|
|
|
|
#import <AsyncDisplayKit/ASCollectionGalleryLayoutDelegate.h>
|
|
|
|
#import <AsyncDisplayKit/_ASCollectionGalleryLayoutItem.h>
|
|
#import <AsyncDisplayKit/ASAssert.h>
|
|
#import <AsyncDisplayKit/ASCellNode.h>
|
|
#import <AsyncDisplayKit/ASCollectionElement.h>
|
|
#import <AsyncDisplayKit/ASCollectionLayoutContext.h>
|
|
#import <AsyncDisplayKit/ASCollectionLayoutDefines.h>
|
|
#import <AsyncDisplayKit/ASCollectionLayoutState.h>
|
|
#import <AsyncDisplayKit/ASElementMap.h>
|
|
#import <AsyncDisplayKit/ASLayout.h>
|
|
#import <AsyncDisplayKit/ASLayoutRangeType.h>
|
|
#import <AsyncDisplayKit/ASStackLayoutSpec.h>
|
|
|
|
#pragma mark - ASCollectionGalleryLayoutDelegate
|
|
|
|
@implementation ASCollectionGalleryLayoutDelegate {
|
|
ASScrollDirection _scrollableDirections;
|
|
CGSize _itemSize;
|
|
}
|
|
|
|
- (instancetype)initWithScrollableDirections:(ASScrollDirection)scrollableDirections itemSize:(CGSize)itemSize
|
|
{
|
|
self = [super init];
|
|
if (self) {
|
|
ASDisplayNodeAssertFalse(CGSizeEqualToSize(CGSizeZero, itemSize));
|
|
_scrollableDirections = scrollableDirections;
|
|
_itemSize = itemSize;
|
|
}
|
|
return self;
|
|
}
|
|
|
|
- (ASScrollDirection)scrollableDirections
|
|
{
|
|
return _scrollableDirections;
|
|
}
|
|
|
|
- (id)additionalInfoForLayoutWithElements:(ASElementMap *)elements
|
|
{
|
|
return [NSValue valueWithCGSize:_itemSize];
|
|
}
|
|
|
|
+ (ASCollectionLayoutState *)calculateLayoutWithContext:(ASCollectionLayoutContext *)context
|
|
{
|
|
ASElementMap *elements = context.elements;
|
|
CGSize pageSize = context.viewportSize;
|
|
CGSize itemSize = ((NSValue *)context.additionalInfo).CGSizeValue;
|
|
ASScrollDirection scrollableDirections = context.scrollableDirections;
|
|
NSMutableArray<_ASGalleryLayoutItem *> *children = ASArrayByFlatMapping(elements.itemElements,
|
|
ASCollectionElement *element,
|
|
[[_ASGalleryLayoutItem alloc] initWithItemSize:itemSize collectionElement:element]);
|
|
if (children.count == 0) {
|
|
return [[ASCollectionLayoutState alloc] initWithContext:context
|
|
contentSize:CGSizeZero
|
|
elementToLayoutAttributesTable:[NSMapTable weakToStrongObjectsMapTable]];
|
|
}
|
|
|
|
// Use a stack spec to calculate layout content size and frames of all elements without actually measuring each element
|
|
ASStackLayoutSpec *stackSpec = [ASStackLayoutSpec stackLayoutSpecWithDirection:ASStackLayoutDirectionHorizontal
|
|
spacing:0
|
|
justifyContent:ASStackLayoutJustifyContentStart
|
|
alignItems:ASStackLayoutAlignItemsStart
|
|
flexWrap:ASStackLayoutFlexWrapWrap
|
|
alignContent:ASStackLayoutAlignContentStart
|
|
children:children];
|
|
stackSpec.concurrent = YES;
|
|
ASLayout *layout = [stackSpec layoutThatFits:ASSizeRangeForCollectionLayoutThatFitsViewportSize(pageSize, scrollableDirections)];
|
|
|
|
return [[ASCollectionLayoutState alloc] initWithContext:context layout:layout getElementBlock:^ASCollectionElement *(ASLayout *sublayout) {
|
|
return ((_ASGalleryLayoutItem *)sublayout.layoutElement).collectionElement;
|
|
}];
|
|
}
|
|
|
|
@end
|
|
|
|
#endif
|