// // CGXVerticalMenuCollectionView.m // CGXVerticalMenuView-OC // // Created by CGX on 2018/05/01. // Copyright © 2019 CGX. All rights reserved. // #import "CGXVerticalMenuCollectionView.h" #import "CGXVerticalMenuRoundFlowLayout.h" #import "CGXVerticalMenuCollectionSectionTextView.h" #import "CGXVerticalMenuCollectionCell.h" @interface CGXVerticalMenuCollectionView() @property (nonatomic, strong,readwrite) NSMutableArray *dataArray; @property (nonatomic, strong,readwrite) CGXVerticalMenuCustomCollectionView *collectionView; @end @implementation CGXVerticalMenuCollectionView - (instancetype)initWithFrame:(CGRect)frame { self = [super initWithFrame:frame]; if (self) { [self initializeData]; [self initializeViews]; } return self; } - (instancetype)initWithCoder:(NSCoder *)coder { self = [super initWithCoder:coder]; if (self) { [self initializeData]; [self initializeViews]; } return self; } - (void)initializeData { self.dataArray = [NSMutableArray array]; self.backgroundColor = [[UIColor whiteColor] colorWithAlphaComponent:0]; } - (CGXVerticalMenuRoundFlowLayout *)preferredLayout { CGXVerticalMenuRoundFlowLayout *layout = [[CGXVerticalMenuRoundFlowLayout alloc] init]; layout.scrollDirection = UICollectionViewScrollDirectionVertical; layout.isRoundEnabled = YES; layout.isCalculateHeader = YES; layout.isCalculateFooter = YES; return layout; } - (void)initializeViews { self.collectionView = [[CGXVerticalMenuCustomCollectionView alloc] initWithFrame:self.bounds collectionViewLayout:[self preferredLayout]]; self.collectionView.backgroundColor = self.backgroundColor; self.collectionView.showsHorizontalScrollIndicator = NO; self.collectionView.showsVerticalScrollIndicator = NO; self.collectionView.scrollsToTop = NO; self.collectionView.dataSource = self; self.collectionView.delegate = self; self.collectionView.alwaysBounceVertical = YES; [self.collectionView registerClass:[CGXVerticalMenuCollectionCell class] forCellWithReuseIdentifier:NSStringFromClass([CGXVerticalMenuCollectionCell class])]; [self.collectionView registerClass:[UICollectionReusableView class] forSupplementaryViewOfKind:UICollectionElementKindSectionHeader withReuseIdentifier:NSStringFromClass([UICollectionReusableView class])]; [self.collectionView registerClass:[UICollectionReusableView class] forSupplementaryViewOfKind:UICollectionElementKindSectionFooter withReuseIdentifier:NSStringFromClass([UICollectionReusableView class])]; [self.collectionView registerClass:[CGXVerticalMenuCollectionSectionTextView class] forSupplementaryViewOfKind:UICollectionElementKindSectionHeader withReuseIdentifier:NSStringFromClass([CGXVerticalMenuCollectionSectionTextView class])]; if (@available(iOS 11.0, *)) { self.collectionView.contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentNever; } self.collectionView.translatesAutoresizingMaskIntoConstraints = NO; [self addSubview:self.collectionView]; [self.collectionView addObserver:self forKeyPath:@"contentOffset" options:NSKeyValueObservingOptionNew context:nil]; } - (void)layoutSubviews { [super layoutSubviews]; self.collectionView.frame = CGRectMake(0, 0, CGRectGetWidth(self.bounds), CGRectGetHeight(self.bounds)); [self.collectionView setContentOffset:CGPointMake(0, 0) animated:NO]; [self.collectionView reloadData]; } - (NSInteger)numberOfSectionsInCollectionView:(UICollectionView *)collectionView { return self.dataArray.count; } - (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section { CGXVerticalMenuCollectionSectionModel *sectionModel = self.dataArray[section]; return sectionModel.rowArray.count; } - (UIEdgeInsets)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout insetForSectionAtIndex:(NSInteger)section { CGXVerticalMenuCollectionSectionModel *sectionModel = self.dataArray[section]; return UIEdgeInsetsMake(sectionModel.insets.top, sectionModel.insets.left+sectionModel.borderInsets.left, sectionModel.insets.bottom+sectionModel.borderInsets.bottom, sectionModel.insets.right+sectionModel.borderInsets.right); } - (CGFloat)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout minimumLineSpacingForSectionAtIndex:(NSInteger)section { CGXVerticalMenuCollectionSectionModel *sectionModel = self.dataArray[section]; return sectionModel.minimumLineSpacing; } - (CGFloat)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout minimumInteritemSpacingForSectionAtIndex:(NSInteger)section { CGXVerticalMenuCollectionSectionModel *sectionModel = self.dataArray[section]; return sectionModel.minimumInteritemSpacing; } - (CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath { CGXVerticalMenuCollectionSectionModel *sectionModel = self.dataArray[indexPath.section]; UIEdgeInsets insets = sectionModel.insets; CGFloat space0 = sectionModel.borderInsets.left + sectionModel.borderInsets.right; CGFloat space1 = insets.left + insets.right; CGFloat space2 = sectionModel.minimumInteritemSpacing; CGFloat width = (CGRectGetWidth(self.frame)-space1-space0-(sectionModel.rowCount-1)*space2)/sectionModel.rowCount; CGFloat height = width; if (self.dataSouce && [self.dataSouce respondsToSelector:@selector(categoryRightView:sizeForItemAtSection:ItemWidth:)]) { height = [self.dataSouce categoryRightView:self sizeForItemAtSection:indexPath.section ItemWidth:width]; } return CGSizeMake(floor(width), height); } - (CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout referenceSizeForFooterInSection:(NSInteger)section { CGXVerticalMenuCollectionSectionModel *sectionModel = self.dataArray[section]; if (sectionModel.footerHeight==0) { return CGSizeMake(collectionView.frame.size.width, sectionModel.footerHeight); } return CGSizeMake(collectionView.frame.size.width, sectionModel.footerHeight+sectionModel.borderInsets.bottom); } - (CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout referenceSizeForHeaderInSection:(NSInteger)section { CGXVerticalMenuCollectionSectionModel *sectionModel = self.dataArray[section]; if (sectionModel.headerHeight==0) { return CGSizeMake(collectionView.frame.size.width, sectionModel.headerHeight); } return CGSizeMake(collectionView.frame.size.width, sectionModel.headerHeight+sectionModel.borderInsets.top); } - (UICollectionReusableView *)collectionView:(UICollectionView *)collectionView viewForSupplementaryElementOfKind:(NSString *)kind atIndexPath:(NSIndexPath *)indexPath { CGXVerticalMenuCollectionSectionModel *sectionModel = self.dataArray[indexPath.section]; if (kind == UICollectionElementKindSectionHeader) { UICollectionReusableView *view = [collectionView dequeueReusableSupplementaryViewOfKind:kind withReuseIdentifier:NSStringFromClass([UICollectionReusableView class]) forIndexPath:indexPath]; [view.subviews enumerateObjectsUsingBlock:^(__kindof UIView * _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) { [obj removeFromSuperview]; }]; if (self.dataSouce && [self.dataSouce respondsToSelector:@selector(categoryRightView:KindHeadAtIndexPath:)] && [self.dataSouce categoryRightView:self KindHeadAtIndexPath:indexPath]) { UICollectionReusableView *headerView =[self.dataSouce categoryRightView:self KindHeadAtIndexPath:indexPath]; CGRect frame = CGRectMake(0, 0, view.frame.size.width, view.frame.size.height); if (view.frame.size.height > sectionModel.borderInsets.top) { frame.origin.y = sectionModel.borderInsets.top; frame.size.height = view.frame.size.height-sectionModel.borderInsets.top; } if (sectionModel.roundModel.isCalculateHeader) { frame.origin.x = sectionModel.borderInsets.left; frame.size.width = view.frame.size.width-sectionModel.borderInsets.left-sectionModel.borderInsets.right; } headerView.frame = frame; headerView.backgroundColor = sectionModel.headerBgColor; [view addSubview:headerView]; } else{ CGXVerticalMenuCollectionSectionTextView *textView = [[CGXVerticalMenuCollectionSectionTextView alloc] init]; textView.frame = CGRectMake(0, 0, CGRectGetWidth(collectionView.frame), sectionModel.headerHeight);; CGRect frame = CGRectMake(0, 0, view.frame.size.width, view.frame.size.height); if (view.frame.size.height > sectionModel.borderInsets.top) { frame.origin.y = sectionModel.borderInsets.top; frame.size.height = view.frame.size.height-sectionModel.borderInsets.top; } if (sectionModel.roundModel.isCalculateHeader) { frame.origin.x = sectionModel.borderInsets.left; frame.size.width = view.frame.size.width-sectionModel.borderInsets.left-sectionModel.borderInsets.right; } textView.frame = frame; textView.backgroundColor = sectionModel.headerBgColor; [textView updateWithTextModel:sectionModel.headNameModel]; [view addSubview:textView]; } return view; } else { UICollectionReusableView *view = [collectionView dequeueReusableSupplementaryViewOfKind:kind withReuseIdentifier:NSStringFromClass([UICollectionReusableView class]) forIndexPath:indexPath]; [view.subviews enumerateObjectsUsingBlock:^(__kindof UIView * _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) { [obj removeFromSuperview]; }]; if (self.dataSouce && [self.dataSouce respondsToSelector:@selector(categoryRightView:KindFootAtIndexPath:)] && [self.dataSouce categoryRightView:self KindFootAtIndexPath:indexPath]) { UICollectionReusableView *footerView = [self.dataSouce categoryRightView:self KindFootAtIndexPath:indexPath]; CGRect frame = CGRectMake(0, 0, view.frame.size.width, view.frame.size.height); if (view.frame.size.height > sectionModel.borderInsets.bottom) { frame.size.height = view.frame.size.height-sectionModel.borderInsets.bottom; } if (sectionModel.roundModel.isCalculateHeader) { frame.origin.x = sectionModel.borderInsets.left; frame.size.width = view.frame.size.width-sectionModel.borderInsets.left-sectionModel.borderInsets.right; } footerView.frame = frame; footerView.backgroundColor = sectionModel.footerBgColor; [view addSubview:footerView]; } else{ view.backgroundColor = sectionModel.footerBgColor; } return view; } return nil; } #pragma mark - CGXVerticalMenuRoundFlowLayout - (UIColor *)collectionView:(UICollectionView *)categoryView BackgroundColorForSection:(NSInteger)section { if (self.dataSouce && [self.dataSouce respondsToSelector:@selector(categoryRightView:BackgroundColorForSection:)]) { return [self.dataSouce categoryRightView:self BackgroundColorForSection:section]; } return self.collectionView.backgroundColor; } /// 设置底色参数 /// @param collectionView collectionView description /// @param section section description - (CGXVerticalMenuRoundModel *)collectionView:(UICollectionView *)collectionView configModelForSectionAtIndex:(NSInteger)section { CGXVerticalMenuCollectionSectionModel *sectionModel = self.dataArray[section]; return sectionModel.roundModel; } /// 设置底色偏移点量（与collectionview的sectionInset用法相同，但是与sectionInset区分） /// @param collectionView collectionView description /// @param section section description - (UIEdgeInsets)collectionView:(UICollectionView *)collectionView borderEdgeInsertsForSectionAtIndex:(NSInteger)section { CGXVerticalMenuCollectionSectionModel *sectionModel = self.dataArray[section]; return sectionModel.borderInsets; } /// 设置是否计算headerview（根据section判断是否单独计算） /// @param collectionView collectionView description /// @param section section description - (BOOL)collectionView:(UICollectionView *)collectionView isCalculateHeaderViewIndex:(NSInteger)section { CGXVerticalMenuCollectionSectionModel *sectionModel = self.dataArray[section]; return sectionModel.roundModel.isCalculateHeader; } /// 设置是否计算footerview（根据section判断是否单独计算） /// @param collectionView collectionView description /// @param section section description - (BOOL)collectionView:(UICollectionView *)collectionView isCalculateFooterViewIndex:(NSInteger)section { CGXVerticalMenuCollectionSectionModel *sectionModel = self.dataArray[section]; return sectionModel.roundModel.isCalculateFooter; } /// 背景图点击事件 /// @param collectionView collectionView description /// @param indexPath 点击背景图的indexPath - (void)collectionView:(UICollectionView *)collectionView didSelectDecorationViewAtIndexPath:(NSIndexPath *)indexPath { if (self.delegate && [self.delegate respondsToSelector:@selector(categoryRightView:didSelectDecorationViewAtIndexPath:)]) { [self.delegate categoryRightView:self didSelectDecorationViewAtIndexPath:indexPath]; } } /* 是否悬停 */ - (BOOL)collectionView:(UICollectionView *)collectionView sectionHeadersPinAtSection:(NSInteger)section { CGXVerticalMenuCollectionSectionModel *sectionModel = self.dataArray[section]; return sectionModel.headersHovering; } /* 悬停上部距离 */ - (CGFloat)collectionView:(UICollectionView *)collectionView sectionHeadersPinTopSpaceAtSection:(NSInteger)section { CGXVerticalMenuCollectionSectionModel *sectionModel = self.dataArray[section]; return sectionModel.headersHoveringTopEdging; } - (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath { if (self.dataSouce && [self.dataSouce respondsToSelector:@selector(categoryRightView:cellForItemAtIndexPath:)] && [self.dataSouce categoryRightView:self cellForItemAtIndexPath:indexPath]) { return [self.dataSouce categoryRightView:self cellForItemAtIndexPath:indexPath]; } CGXVerticalMenuCollectionCell *cell = [self.collectionView dequeueReusableCellWithReuseIdentifier:NSStringFromClass([CGXVerticalMenuCollectionCell class]) forIndexPath:indexPath]; CGXVerticalMenuCollectionSectionModel *sectionModel = self.dataArray[indexPath.section]; CGXVerticalMenuCollectionItemModel *itemModel = sectionModel.rowArray[indexPath.row]; [cell reloadData:itemModel]; return cell; } - (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath { if (self.delegate && [self.delegate respondsToSelector:@selector(categoryRightView:didClickSelectedItemAtIndexPath:)]) { [self.delegate categoryRightView:self didClickSelectedItemAtIndexPath:indexPath]; } } #pragma mark - KVO - (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context { if ([keyPath isEqualToString:@"contentOffset"]) { CGPoint contentOffset = [change[NSKeyValueChangeNewKey] CGPointValue]; if ((self.collectionView.isTracking || self.collectionView.isDecelerating)) { //只处理用户滚动的情况 [self contentOffsetOfContentScrollViewDidChanged:contentOffset]; } } } - (void)contentOffsetOfContentScrollViewDidChanged:(CGPoint)contentOffset { if (self.delegate && [self.delegate respondsToSelector:@selector(categoryRightView:dropUpDownDidChanged:)]) { [self.delegate categoryRightView:self dropUpDownDidChanged:contentOffset]; } } // CollectionView分区标题即将展示 - (void)collectionView:(UICollectionView *)collectionView willDisplaySupplementaryView:(UICollectionReusableView *)view forElementKind:(NSString *)elementKind atIndexPath:(NSIndexPath *)indexPath { view.layer.zPosition = 0.0; if (self.delegate && [self.delegate respondsToSelector:@selector(categoryRightView:willDisplaySupplementaryView:forElementKind:atIndexPath:)]) { [self.delegate categoryRightView:self willDisplaySupplementaryView:view forElementKind:elementKind atIndexPath:indexPath]; } } // CollectionView分区标题展示结束 - (void)collectionView:(UICollectionView *)collectionView didEndDisplayingSupplementaryView:(nonnull UICollectionReusableView *)view forElementOfKind:(nonnull NSString *)elementKind atIndexPath:(nonnull NSIndexPath *)indexPath { if (self.delegate && [self.delegate respondsToSelector:@selector(categoryRightView:didEndDisplayingSupplementaryView:forElementOfKind:atIndexPath:)]) { [self.delegate categoryRightView:self didEndDisplayingSupplementaryView:view forElementOfKind:elementKind atIndexPath:indexPath]; } } - (void)scrollViewDidScroll:(UIScrollView *)scrollView { if (self.delegate && [self.delegate respondsToSelector:@selector(categoryRightView:ScrollViewDidScroll:)]) { [self.delegate categoryRightView:self ScrollViewDidScroll:scrollView]; } } -(void)scrollViewWillBeginDragging:(UIScrollView *)scrollView { if (self.delegate && [self.delegate respondsToSelector:@selector(categoryRightView:scrollViewWillBeginDragging:)]) { [self.delegate categoryRightView:self scrollViewWillBeginDragging:scrollView]; } } -(void)scrollViewDidEndDragging:(UIScrollView *)scrollView willDecelerate:(BOOL)decelerate { if (self.delegate && [self.delegate respondsToSelector:@selector(categoryRightView:scrollViewDidEndDragging:willDecelerate:)]) { [self.delegate categoryRightView:self scrollViewDidEndDragging:scrollView willDecelerate:decelerate]; } } - (void)scrollViewDidEndScrollingAnimation:(UIScrollView *)scrollView { if (self.delegate && [self.delegate respondsToSelector:@selector(categoryRightView:scrollViewDidEndScrollingAnimation:)]) { [self.delegate categoryRightView:self scrollViewDidEndScrollingAnimation:scrollView]; } } -(void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView{ if (self.delegate && [self.delegate respondsToSelector:@selector(categoryRightView:scrollViewDidEndDecelerating:)]) { [self.delegate categoryRightView:self scrollViewDidEndDecelerating:scrollView]; } } - (void)updateRightWithDataArray:(NSMutableArray *)dataArray { [self.dataArray removeAllObjects]; [self.dataArray addObjectsFromArray:dataArray]; [self.collectionView reloadData]; } - (void)setDataSouce:(id)dataSouce { _dataSouce = dataSouce; if ([self.dataSouce respondsToSelector:@selector(customcategoryRightViewCollectionViewCellClass)] && [self.dataSouce customcategoryRightViewCollectionViewCellClass]) { [self registerCell:[self.dataSouce customcategoryRightViewCollectionViewCellClass] IsXib:NO]; }else if ([self.dataSouce respondsToSelector:@selector(customcategoryRightViewCollectionViewCellNib)] && [self.dataSouce customcategoryRightViewCollectionViewCellNib]) { [self registerCell:[self.dataSouce customcategoryRightViewCollectionViewCellNib] IsXib:YES]; } } - (void)dealloc { if (self.collectionView) { [self.collectionView removeObserver:self forKeyPath:@"contentOffset"]; } } - (void)willMoveToSuperview:(UIView *)newSuperview { [super willMoveToSuperview:newSuperview]; UIResponder *next = newSuperview; while (next != nil) { if ([next isKindOfClass:[UIViewController class]]) { UIViewController *vc = (UIViewController *)next; if (@available(iOS 11.0, *)) { vc.automaticallyAdjustsScrollViewInsets = NO; } break; } next = next.nextResponder; } } - (void)registerCell:(Class)classCell IsXib:(BOOL)isXib { if (![classCell isKindOfClass:[UICollectionViewCell class]]) { NSAssert(![classCell isKindOfClass:[UICollectionViewCell class]], @"注册cell的registerCellAry数组必须是UICollectionViewCell类型"); } if (isXib) { [self.collectionView registerNib:[UINib nibWithNibName:[NSString stringWithFormat:@"%@", classCell] bundle:nil] forCellWithReuseIdentifier:[NSString stringWithFormat:@"%@", classCell]]; } else{ [self.collectionView registerClass:classCell forCellWithReuseIdentifier:[NSString stringWithFormat:@"%@", classCell]]; } } - (void)registerFooter:(Class)footer IsXib:(BOOL)isXib { if (![footer isKindOfClass:[UICollectionReusableView class]]) { NSAssert(![footer isKindOfClass:[UICollectionReusableView class]], @"注册cell的registerCellAry数组必须是UICollectionReusableView类型"); } if (isXib) { [self.collectionView registerNib:[UINib nibWithNibName:[NSString stringWithFormat:@"%@", footer] bundle:nil] forSupplementaryViewOfKind:UICollectionElementKindSectionFooter withReuseIdentifier:[NSString stringWithFormat:@"%@", footer]]; } else{ [self.collectionView registerClass:[UICollectionReusableView class] forSupplementaryViewOfKind:UICollectionElementKindSectionFooter withReuseIdentifier:[NSString stringWithFormat:@"%@", footer]]; } } - (void)registerHeader:(Class)header IsXib:(BOOL)isXib { if (![header isKindOfClass:[UICollectionReusableView class]]) { NSAssert(![header isKindOfClass:[UICollectionReusableView class]], @"注册cell的registerCellAry数组必须是UICollectionReusableView类型"); } if (isXib) { [self.collectionView registerNib:[UINib nibWithNibName:[NSString stringWithFormat:@"%@", header] bundle:nil] forSupplementaryViewOfKind:UICollectionElementKindSectionHeader withReuseIdentifier:[NSString stringWithFormat:@"%@", header]]; } else{ [self.collectionView registerClass:[UICollectionReusableView class] forSupplementaryViewOfKind:UICollectionElementKindSectionHeader withReuseIdentifier:[NSString stringWithFormat:@"%@", header]]; } } @end