//
//  HDLCoverFlow.m
//  CoverFlow
//
//  Created by JLCHEN on 2019/8/23.
//  Copyright © 2019 JLCHEN. All rights reserved.
//

#import "HDLCoverFlow.h"
#import "HDLCoverFlowCell.h"
#import "HDLCoverFlowLayout.h"

@interface HDLCoverFlow()<UICollectionViewDataSource,UICollectionViewDelegate>
@property (nonatomic,strong) UICollectionView *mUICollectionView;


@end


@implementation HDLCoverFlow{
    
        NSArray<UIView *> *viewDataArray;
}

- (instancetype)initWithFrame:(CGRect)frame{
    if (self = [super initWithFrame:frame]) {
        [self addSubview:self.mUICollectionView];
    }
    return self;
}

#pragma mark- 子控件坐标
//当控件本身的尺寸发送改变时，系统会自动调用这个方法
- (void)layoutSubviews{
    [super layoutSubviews];
    
    CGFloat personW = self.frame.size.width;
    CGFloat personH = self.frame.size.height;

    self.mUICollectionView.frame = CGRectMake(0, 0, personW, personH);
    
}

#pragma mark- 懒加载
- (UICollectionView *)mUICollectionView{
    if (_mUICollectionView == nil) {
        HDLCoverFlowLayout *flowLayout = [[HDLCoverFlowLayout alloc]init];
        
        _mUICollectionView = [[UICollectionView alloc] initWithFrame:CGRectMake(0, 0,self.frame.size.width, self.frame.size.height) collectionViewLayout:flowLayout];
        _mUICollectionView.backgroundColor = [UIColor lightGrayColor];
        // 设置数据源对象
        _mUICollectionView.dataSource = self;
        _mUICollectionView.delegate = self;
        // 注册cell
        [_mUICollectionView registerClass:[HDLCoverFlowCell class] forCellWithReuseIdentifier:@"CoverFlowID"];
   

    }
    return _mUICollectionView;
}


#pragma mark - 数据源方法
// 返回item的个数!
- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section {
    return viewDataArray.count;
}

// 返回cell!
- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath {
    
    // 1.创建cell
    HDLCoverFlowCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:@"CoverFlowID" forIndexPath:indexPath];
    
    [cell setCustomViewCell: viewDataArray[indexPath.row]];
    // 3.返回cell
    return cell;
}


#pragma mark --UICollectionViewDelegate
//UICollectionView被选中时调用的方法
-(void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath
{
//    // 1.创建cell
//    ZHCoverFlowCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:@"CoverFlowID" forIndexPath:indexPath];
//    cell.backgroundColor = [UIColor redColor];
    
    NSLog(@"点击了：%ld",(indexPath.row));
    
    [_mSelectItemDelegate onSelectItem:indexPath.row];
}


#pragma mark - 加载数据

-(void)addCoverFlowViewDatas:(NSArray<UIView *> *) viewsData{
    viewDataArray = viewsData;
    [_mUICollectionView reloadData];
}

/**
 设置选中
 
 @param selectIndex
 */
-(void)setCoverFlowSelectIndex:(NSInteger) selectIndex{
    
    [self.mUICollectionView scrollToItemAtIndexPath:[NSIndexPath indexPathForRow:selectIndex inSection:0] atScrollPosition:UICollectionViewScrollPositionCenteredHorizontally animated:NO];
//    _mUICollectionView
}


/**
 重置布局
 
 @param mCGRect 布局
 
 */
-(void)initWithFrameArc:(CGRect) mCGRect{
    self.frame = mCGRect;
    _mUICollectionView.frame =  self.frame;
    _mUICollectionView.center = CGPointMake(self.frame.size.width/2, self.frame.size.height/2);
}

@end