ShengQianProject/YouHuiProject/YouHui/Community/View/PhotoContainer/PhotoContain...

//
//  PhotoContainerView.m
//  YouHuiProject
//
//  Created by 小花 on 2018/5/16.
//  Copyright © 2018年 kuxuan. All rights reserved.
//

#import "PhotoContainerView.h"
#import "SDPhotoBrowser.h"
#import "UIView+SDAutoLayout.h"

@interface PhotoContainerView ()<SDPhotoBrowserDelegate>

@property (nonatomic, strong) NSArray *imageViewsArray;
@end

@implementation PhotoContainerView

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

- (void)setup
{
    NSMutableArray *temp = [NSMutableArray new];
    
    for (int i = 0; i < 9; i++) {
        UIImageView *imageView = [UIImageView new];
        [self addSubview:imageView];
        imageView.userInteractionEnabled = YES;
        imageView.tag = i;
        UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapImageView:)];
        [imageView addGestureRecognizer:tap];
        [temp addObject:imageView];
    }
    
    self.imageViewsArray = [temp copy];
}


- (void)setPicPathStringsArray:(NSArray *)picPathStringsArray
{
    _picPathStringsArray = picPathStringsArray;
    
    for (long i = _picPathStringsArray.count; i < self.imageViewsArray.count; i++) {
        UIImageView *imageView = [self.imageViewsArray objectAtIndex:i];
        imageView.hidden = YES;
    }
    
    if (_picPathStringsArray.count == 0) {
        self.height = 0;
        self.fixedHeight = @(0);
        return;
    }
    
    CGFloat itemW = [self itemWidthForPicPathArray:_picPathStringsArray];
    CGFloat itemH = 0;
    //    if (_picPathStringsArray.count == 1) {
    //        UIImage *image = [UIImage imageNamed:_picPathStringsArray.firstObject];
    //        if (image.size.width) {
    //            itemH = image.size.height / image.size.width * itemW;
    //        }
    //    } else {
    //        itemH = itemW;
    //    }
    itemH = itemW;
    long perRowItemCount = [self perRowItemCountForPicPathArray:_picPathStringsArray];
    CGFloat margin = 5;
    
    [_picPathStringsArray enumerateObjectsUsingBlock:^(NSString *  _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) {
        long columnIndex = idx % perRowItemCount;
        long rowIndex = idx / perRowItemCount;
        UIImageView *imageView = [_imageViewsArray objectAtIndex:idx];
        imageView.hidden = NO;
        [imageView yy_setImageWithURL:[NSURL URLWithString:obj] options:YYWebImageOptionProgressiveBlur | YYWebImageOptionSetImageWithFadeAnimation];
        imageView.backgroundColor = [UIColor yhGrayColor];
        imageView.frame = CGRectMake(columnIndex * (itemW + margin), rowIndex * (itemH + margin), itemW, itemH);
    }];
    
    CGFloat w = perRowItemCount * itemW + (perRowItemCount - 1) * margin;
    int columnCount = ceilf(_picPathStringsArray.count * 1.0 / perRowItemCount);
    CGFloat h = columnCount * itemH + (columnCount - 1) * margin;
    self.width = w;
    self.height = h;
    
    self.fixedHeight = @(h);
    self.fixedWith = @(w);
}

#pragma mark - private actions

- (void)tapImageView:(UITapGestureRecognizer *)tap
{
    UIView *imageView = tap.view;
    if (self.delegate &&[self.delegate respondsToSelector:@selector(otherOPByModel:)]) {
        [self.delegate otherOPByModel:self.modelArray[imageView.tag]];
    }else{
        SDPhotoBrowser *browser = [[SDPhotoBrowser alloc] init];
        browser.currentImageIndex = imageView.tag;
        browser.sourceImagesContainerView = self;
        browser.imageCount = self.picPathStringsArray.count;
        browser.delegate = self;
        [browser show];
    }
}

- (CGFloat)itemWidthForPicPathArray:(NSArray *)array
{
    if (array.count == 1) {
        return 120;
    } else {
        CGFloat margin = 5;
        CGFloat w = ([UIScreen mainScreen].bounds.size.width-20-margin*2)/3;
        return w;
    }
}

- (NSInteger)perRowItemCountForPicPathArray:(NSArray *)array
{
//    if (array.count < 3) {
//        return array.count;
//    } else if (array.count <= 4) {
//        return 2;
//    } else {
//        return 3;
//    }
    if (array.count<=3) {
        return array.count;
    }
    return 3;
}


#pragma mark - SDPhotoBrowserDelegate
- (NSURL *)photoBrowser:(SDPhotoBrowser *)browser highQualityImageURLForIndex:(NSInteger)index
{
    NSString *imageName = self.picPathStringsArray[index];
    NSURL *url = [[NSBundle mainBundle] URLForResource:imageName withExtension:nil];
    return url;
}

- (UIImage *)photoBrowser:(SDPhotoBrowser *)browser placeholderImageForIndex:(NSInteger)index
{
    UIImageView *imageView = self.subviews[index];
    return imageView.image;
}


@end