tederen_ios/smartRhino/Project/VCModel/Home/VC/View/HorizonScroll.m

//
//  horizonScroll.m
//  TheoryNetwork
//
//  Created by tederen on 2019/9/20.
//  Copyright © 2019 tederen. All rights reserved.
//

#import "HorizonScroll.h"
#import "ChannelModel.h"
#import "HomeScrCell.h"

@interface HorizonScroll ()<UICollectionViewDelegate, UICollectionViewDataSource ,UICollectionViewDelegateFlowLayout>
{
    UIButton *_selectButton;
    BOOL invalidType;
}

@property (nonatomic, copy) NSArray *channelArr;

@property (nonatomic, strong) TDButton *addButton;
@end

@implementation HorizonScroll
- (instancetype)initWithFrame:(CGRect)frame
{
    if (self = [super initWithFrame:frame]) {
        [self addSubview:self.collectionView];
        [self addSubview:self.addButton];
        [self.addButton mas_makeConstraints:^(MASConstraintMaker *make) {
            make.top.right.bottom.mas_equalTo(self);
            make.width.mas_offset(44);
        }];
        [self.collectionView mas_makeConstraints:^(MASConstraintMaker *make) {
            make.left.top.bottom.mas_equalTo(self);
            make.right.mas_equalTo(self.addButton.mas_left);
        }];
    }
    return self;
}
- (UICollectionView *)collectionView{
    if (!_collectionView) {
        UICollectionViewFlowLayout *flowLayout = [[UICollectionViewFlowLayout alloc] init];
        // 垂直方向滑动
        flowLayout.scrollDirection = UICollectionViewScrollDirectionHorizontal;
        _collectionView = [[UICollectionView alloc] initWithFrame:CGRectZero collectionViewLayout:flowLayout];
        _collectionView.delegate = self;
        _collectionView.dataSource = self;
        _collectionView.showsVerticalScrollIndicator = NO;
        _collectionView.showsHorizontalScrollIndicator = NO;
        _collectionView.backgroundColor = [UIColor whiteColor];
        [_collectionView registerNib:[UINib nibWithNibName:@"HomeScrCell" bundle:nil] forCellWithReuseIdentifier:@"HomeScrCellID"];
    }
    return _collectionView;
}

- (void)setChannelArray:(NSArray *)channelArr {
    _channelArr = channelArr;
    [self.collectionView reloadData];
}
- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section
{
    return self.channelArr.count;
}
-(UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath{
    HomeScrCell * cell = [collectionView dequeueReusableCellWithReuseIdentifier:@"HomeScrCellID" forIndexPath:indexPath];
    ChannelModel * model = self.channelArr[indexPath.item];
    [cell setDataWithTitle:model.ArticleGroupName isSelect:model.IsSelect];
    return cell;
}
- (UIEdgeInsets)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewFlowLayout *)layout insetForSectionAtIndex:(NSInteger)section {
    return UIEdgeInsetsMake(0, 15, 0, 15);
}
- (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath
{
    ChannelModel * model = self.channelArr[indexPath.item];
    if (self.ClickSelectChannelBlock) {
        self.ClickSelectChannelBlock(model.ArticleGroupId);
    }
}
- (CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath
{
    ChannelModel * model = self.channelArr[indexPath.item];
    UILabel * label = [UILabel new];
    label.font = [UIFont systemFontOfSize:15.f];
    label.text = model.ArticleGroupName;
    CGSize size = [label sizeThatFits:CGSizeMake(SCREEN_WIDTH, 45)];
    return CGSizeMake(size.width, 45);
}
- (CGFloat)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout minimumLineSpacingForSectionAtIndex:(NSInteger)section
{
    return 15.f;
}
- (CGFloat)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout minimumInteritemSpacingForSectionAtIndex:(NSInteger)section
{
    return 30.f;
}
- (void)addChannelAction:(UIButton *)sender {
    if (self.ClickAddChannelBlock) {
        self.ClickAddChannelBlock();
    }
}

#pragma mark - setter

- (UIButton *)addButton {
    if (!_addButton) {
        _addButton = [TDButton buttonWithType:UIButtonTypeCustom];
        [_addButton setImage:IMG(@"icon_circleAdd") forState:UIControlStateNormal];
        [_addButton addTarget:self action:@selector(addChannelAction:) forControlEvents:UIControlEventTouchUpInside];
        [_addButton setCurrentButtonHotSize:CGSizeZero];
    }
    return _addButton;
}

@end