711/BuguLive/Class/Sections/DT_Controller(动态)/View/YHWorkGroupPhotoContainer.m

//
//  YHWorkGroupPhotoContainer.m
//  HKPTimeLine  仿赤兔、微博动态
//  CSDN:  http://blog.csdn.net/samuelandkevin
//  Created by samuelandkevin on 16/9/20.
//  Copyright © 2016年 HKP. All rights reserved.
//

#import "YHWorkGroupPhotoContainer.h"
#import "SDPhotoBrowser.h"

@interface YHWorkGroupPhotoContainer ()<SDPhotoBrowserDelegate>

@property (nonatomic, strong) NSArray *imageViewsArray;
@property (nonatomic, assign) CGFloat width;

@end

@implementation YHWorkGroupPhotoContainer

- (instancetype)initWithWidth:(CGFloat)width{
    if (self = [super init]) {
        NSAssert(width>0, ASLocalizedString(@"请设置图片容器的宽度"));
        self.width = width;
    }
    return self;
}

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

- (void)awakeFromNib{
    [self setup];
    [super awakeFromNib];
}

- (void)setup
{
    NSMutableArray *temp = [NSMutableArray new];
    
    for (int i = 0; i < 9; i++) {
        UIImageView *imageView = [UIImageView new];
        imageView.layer.cornerRadius = 8;
        imageView.layer.masksToBounds = YES;
        [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];
}



- (CGFloat)setupPicUrlArray:(NSArray *)picUrlArray{
    _picUrlArray = picUrlArray;
    
    for (long i = _picUrlArray.count; i < self.imageViewsArray.count; i++) {
        UIImageView *imageView = [self.imageViewsArray objectAtIndex:i];
        imageView.hidden = YES;
    }
    
    if (_picUrlArray.count == 0) {
        return 0;
    }
    
    CGFloat itemW = [self itemWidthForPicPathArray:_picUrlArray];
    CGFloat itemH = itemW;
    
    long perRowItemCount = [self perRowItemCountForPicPathArray:_picUrlArray];
    CGFloat margin = 5;
    
    if ([_picUrlArray isKindOfClass:[NSArray class]]) {
        for (int i = 0; i< _picUrlArray.count; i++) {
            NSURL *obj = _picUrlArray[i];
            //        [NSURL URLWithString:_picOriArray[i]];
            
            //        if ([_picOriArray[i] isKindOfClass:[NSString class]]) {
            //            obj = [NSURL URLWithString:_picOriArray[i]];
            //        }else if([_picOriArray[i] isKindOfClass:[NSURL class]]){
            //            obj = _picOriArray[i];
            ////            [NSURL URLWithString:_picOriArray[i]];
            //        }
            
            //        _picUrlArray[i];
            long columnIndex = i % perRowItemCount;
            long rowIndex    = i / perRowItemCount;
            
            UIImageView *imageView = self.imageViewsArray[i];
            imageView.contentMode = UIViewContentModeScaleAspectFill;
            imageView.clipsToBounds = YES;
            imageView.hidden = NO;
            [imageView sd_setImageWithURL:obj placeholderImage:[UIImage imageNamed:@"workgroup_img_defaultPhoto"]  completed:^(UIImage *image, NSError *error, SDImageCacheType cacheType, NSURL *imageURL) {
                
                if (image.size.width < itemW || image.size.height < itemW) {
                    imageView.contentMode = UIViewContentModeScaleAspectFit;
                }
                
            }];
            
            imageView.frame = CGRectMake(columnIndex * (itemW + margin), rowIndex * (itemH + margin), itemW, itemH);
            
        }
    }
    
    
    
    int columnCount = ceilf(_picUrlArray.count * 1.0 / perRowItemCount);
    CGFloat h = columnCount * itemH + (columnCount - 1) * margin;
    
    return h;
}

#pragma mark - private actions

- (void)tapImageView:(UITapGestureRecognizer *)tap
{
    UIView *imageView = tap.view;
    SDPhotoBrowser *browser = [[SDPhotoBrowser alloc] init];
    browser.currentImageIndex = imageView.tag;
    browser.sourceImagesContainerView = self;
    browser.imageCount = self.picUrlArray.count;
    browser.delegate = self;
    [browser show];
}

- (CGFloat)itemWidthForPicPathArray:(NSArray *)array
{
    if (array.count == 1) {
        return 120;
    } else {
        CGFloat itemW = (self.width -10) /3 ;
        return itemW;
    }
}

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

#pragma mark - SDPhotoBrowserDelegate

- (NSURL *)photoBrowser:(SDPhotoBrowser *)browser highQualityImageURLForIndex:(NSInteger)index
{
    NSURL *url = [NSURL new];
    if (index < self.picOriArray.count) {
        
        url = [NSURL URLWithString:self.picOriArray[index]];
    }
    return url;
}

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

/*
 // Only override drawRect: if you perform custom drawing.
 // An empty implementation adversely affects performance during animation.
 - (void)drawRect:(CGRect)rect {
 // Drawing code
 }
 */

@end