Asteria-APP/Asteria/Fuction/Home/Views/ASHomeLookingCell.m

//
//  ASHomeLookingCell.m
//  Asteria
//
//  Created by iOS on 2023/6/10.
//

#import "ASHomeLookingCell.h"
#import "KWScrollOffsetView.h"
#import "ASHomeLookingCollCell.h"

@interface ASHomeLookingCell ()<UICollectionViewDelegate,UICollectionViewDelegateFlowLayout,UICollectionViewDataSource>

@property (nonatomic, strong) UICollectionView *collectV;

@property (nonatomic, strong) UILabel *titleLb;

@property (nonatomic, strong) KWScrollOffsetView *offsetV;




@end

@implementation ASHomeLookingCell

- (void)setModel:(ASHomeMainListModel *)model {
    _model = model;
    self.titleLb.text = model.title;
    self.offsetV.hidden = model.titleArr.count <= 1;
    [self.collectV reloadData];
    
    
}


- (void)awakeFromNib {
    [super awakeFromNib];
    // Initialization code
}

- (void)setSelected:(BOOL)selected animated:(BOOL)animated {
    [super setSelected:selected animated:animated];
    
    // Configure the view for the selected state
}

- (instancetype)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier {
    self = [super initWithStyle:style reuseIdentifier:reuseIdentifier];
    if (self) {
        [self loadSubV];
    }
    return self;
}

- (void)loadSubV {
    self.selectionStyle = UITableViewCellSelectionStyleNone;
    self.contentView.backgroundColor = [UIColor colorWithHexString:@"#FFFFFF"];
    self.backgroundColor = [UIColor colorWithHexString:@"#FFFFFF"];
    
    [self.contentView addSubview:self.titleLb];
    [self.contentView addSubview:self.collectV];
    [self.contentView addSubview:self.offsetV];
    
    [self.titleLb mas_makeConstraints:^(MASConstraintMaker *make) {
        make.top.equalTo(self.contentView).offset(50);
        make.centerX.equalTo(self.contentView);
        make.left.greaterThanOrEqualTo(self.contentView).offset(20);
        make.height.equalTo(@30);
    }];
    
    CGFloat collH = ((KScreenWidth-30)/2 + 28)*2 + 10;
    [self.collectV mas_makeConstraints:^(MASConstraintMaker *make) {
        make.left.equalTo(self.contentView).offset(0);
        make.right.equalTo(self.contentView).offset(-0);
        make.height.equalTo([NSNumber numberWithFloat:collH]);
        make.top.equalTo(self.titleLb.mas_bottom).offset(30);
    }];
    
    [self.offsetV mas_makeConstraints:^(MASConstraintMaker *make) {
        make.centerX.equalTo(self.contentView);
        make.height.equalTo(@2);
        make.width.equalTo(@137);
        make.top.equalTo(self.collectV.mas_bottom).offset(40);
        make.bottom.equalTo(self.contentView.mas_bottom).offset(-50);
    }];
    
}




// MARK: - delegate datasource
- (void)scrollViewDidScroll:(UIScrollView *)scrollView {
    if (self.offsetV.isHidden) {
        return;
    }
    CGFloat offset = scrollView.contentOffset.x;
    CGFloat itemWidth = (KScreenWidth-20);
    NSArray<ASHomeCategoryModel*> *arr = self.model.titleArr;
    if (arr.count > 0) {
        CGFloat maxOffset = (arr.count * (itemWidth + 10) - 10 ) - (KScreenWidth-20);
        self.offsetV.offset = offset/maxOffset;
    }
}

- (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath {
    
        if (self.itemClick) {
    
            ASHomeCategoryModel *m = self.model.titleArr[indexPath.row];
            self.itemClick(indexPath.row, m);
        }
    
}

// MARK: - UICollectionViewDataSource
- (nonnull __kindof UICollectionViewCell *)collectionView:(nonnull UICollectionView *)collectionView cellForItemAtIndexPath:(nonnull NSIndexPath *)indexPath {
    ASHomeLookingCollCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:@"ASHomeLookingCollCell" forIndexPath:indexPath];
    if (indexPath.row >= self.model.titleArr.count) {
        return cell;
    }
    ASHomeCategoryModel *m = self.model.titleArr[indexPath.row];
    [cell setData:m];
    return cell;
}

- (NSInteger)collectionView:(nonnull UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section {
    return self.model.titleArr.count;
}

- (CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath {
    
    CGFloat marg = 10;
    CGFloat w = (KScreenWidth-3*marg)/2;
    CGFloat collH = ((KScreenWidth-30)/2 + 28);
    return CGSizeMake(w, collH);
}

-(CGFloat)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout minimumLineSpacingForSectionAtIndex:(NSInteger)section {
    return 10;
}

-(CGFloat)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout minimumInteritemSpacingForSectionAtIndex:(NSInteger)section {
    return 10;
}

- (UIEdgeInsets)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout insetForSectionAtIndex:(NSInteger)section {
    return UIEdgeInsetsMake(0, 10, 0, 10);
}



- (UILabel *)titleLb {
    if (!_titleLb) {
        UILabel *lb = [[UILabel alloc] init];
        lb.textColor = [UIColor blackColor];
        lb.font = [UIFont fontWithName:Rob_Bold size:24];
        lb.textAlignment = NSTextAlignmentCenter;
        _titleLb = lb;
    }
    return _titleLb;
}

-(UICollectionView *)collectV {
    if (!_collectV) {
        UICollectionViewFlowLayout *layout = [[UICollectionViewFlowLayout alloc] init];
        layout.sectionInset = UIEdgeInsetsMake(10, 0, 10, 0);
        layout.scrollDirection = UICollectionViewScrollDirectionHorizontal;
        CGFloat collH = ((KScreenWidth-30)/2 + 28)*2 + 10;
        CGFloat marg = 10;
        CGFloat w = (KScreenWidth-3*marg)/2;
        CGFloat itemH = ((KScreenWidth-30)/2 + 28);
        layout.itemSize = CGSizeMake(w, itemH);
        UICollectionView *collV = [[UICollectionView alloc] initWithFrame:CGRectMake(0, 0, KScreenWidth, collH) collectionViewLayout:layout];
        collV.backgroundColor = [UIColor whiteColor];
        collV.alwaysBounceHorizontal = true;
        collV.scrollEnabled = true;
        collV.delegate = self;
        collV.dataSource = self;
        collV.showsHorizontalScrollIndicator = false;
        [collV registerClass:[ASHomeLookingCollCell class] forCellWithReuseIdentifier:@"ASHomeLookingCollCell"];
        _collectV = collV;
    }
    return  _collectV;
}

- (KWScrollOffsetView *)offsetV {
    if (!_offsetV) {
        KWScrollOffsetView *v = [[KWScrollOffsetView alloc] initWithFrame:CGRectMake(0, 0, 137, 2)];
        v.clipsToBounds = true;
        v.offWidth = 54;
        v.offset = 0;
        _offsetV = v;
    }
    return _offsetV;
}


@end