#import "HMShopsViewController.h"

 #import "HMShopCell.h"

 #import "HMWaterflowView.h"

 #import "HMShop.h"

 #import "MJExtension.h"

 #import "MJRefresh.h"

 @interface HMShopsViewController ()<HMWaterflowViewDataSource, HMWaterflowViewDelegate>

 @property (nonatomic, strong) NSMutableArray *shops;

 @property (nonatomic, weak) HMWaterflowView *waterflowView;

 @end

 @implementation HMShopsViewController

 - (NSMutableArray *)shops

 {

     if (_shops == nil) {

         self.shops = [NSMutableArray array];

     }

     return _shops;

 }

 - (void)viewDidLoad

 {

     [super viewDidLoad];

     // 0.初始化数据

     NSArray *newShops = [HMShop objectArrayWithFilename:@"2.plist"];

     [self.shops addObjectsFromArray:newShops];

     // 1.瀑布流控件

     HMWaterflowView *waterflowView = [[HMWaterflowView alloc] init];

     waterflowView.backgroundColor = [UIColor redColor];

     // 跟随着父控件的尺寸而自动伸缩

     waterflowView.autoresizingMask = UIViewAutoresizingFlexibleHeight | UIViewAutoresizingFlexibleWidth;

     waterflowView.frame = self.view.bounds;

     waterflowView.dataSource = self;

     waterflowView.delegate = self;

     [self.view addSubview:waterflowView];

     self.waterflowView = waterflowView;

     // 2.继承刷新控件

 //    [waterflowView addFooterWithCallback:^{

 //        NSLog(@"进入上拉加载状态");

 //    }];

 //    [waterflowView addHeaderWithCallback:^{

 //        NSLog(@"进入下拉加载状态");

     //    }];

     [waterflowView addHeaderWithTarget:self action:@selector(loadNewShops)];

     [waterflowView addFooterWithTarget:self action:@selector(loadMoreShops)];

 }

 - (void)didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation

 {

 //    NSLog(@"屏幕旋转完毕");

     [self.waterflowView reloadData];

 }

 - (void)loadNewShops

 {

     static dispatch_once_t onceToken;

     dispatch_once(&onceToken, ^{

         // 加载1.plist

         NSArray *newShops = [HMShop objectArrayWithFilename:@"1.plist"];

         [self.shops insertObjects:newShops atIndexes:[NSIndexSet indexSetWithIndexesInRange:NSMakeRange(, newShops.count)]];

     });

     dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(2.0 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{

         // 刷新瀑布流控件

         [self.waterflowView reloadData];

         // 停止刷新

         [self.waterflowView headerEndRefreshing];

     });

 }

 - (void)loadMoreShops

 {

     static dispatch_once_t onceToken;

     dispatch_once(&onceToken, ^{

         // 加载3.plist

         NSArray *newShops = [HMShop objectArrayWithFilename:@"3.plist"];

         [self.shops addObjectsFromArray:newShops];

     });

     dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(2.0 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{

         // 刷新瀑布流控件

         [self.waterflowView reloadData];

         // 停止刷新

         [self.waterflowView footerEndRefreshing];

     });

 }

 #pragma mark - 数据源方法

 - (NSUInteger)numberOfCellsInWaterflowView:(HMWaterflowView *)waterflowView

 {

     return self.shops.count;

 }

 - (HMWaterflowViewCell *)waterflowView:(HMWaterflowView *)waterflowView cellAtIndex:(NSUInteger)index

 {

     HMShopCell *cell = [HMShopCell cellWithWaterflowView:waterflowView];

     cell.shop = self.shops[index];

     return cell;

 }

 - (NSUInteger)numberOfColumnsInWaterflowView:(HMWaterflowView *)waterflowView

 {

     if (UIInterfaceOrientationIsPortrait(self.interfaceOrientation)) {

         // 竖屏

         return ;

     } else {

         return ;

     }

 }

 #pragma mark - 代理方法

 - (CGFloat)waterflowView:(HMWaterflowView *)waterflowView heightAtIndex:(NSUInteger)index

 {

     HMShop *shop = self.shops[index];

     // 根据cell的宽度 和 图片的宽高比 算出 cell的高度

     return waterflowView.cellWidth * shop.h / shop.w;

 }

 @end

 #import "HMWaterflowViewCell.h"

 @class HMWaterflowView, HMShop;

 @interface HMShopCell : HMWaterflowViewCell

 + (instancetype)cellWithWaterflowView:(HMWaterflowView *)waterflowView;

 @property (nonatomic, strong) HMShop *shop;

 @end

 #import "HMShopCell.h"

 #import "HMWaterflowView.h"

 #import "UIImageView+WebCache.h"

 #import "HMShop.h"

 @interface HMShopCell()

 @property (weak, nonatomic) UIImageView *imageView;

 @property (weak, nonatomic) UILabel *priceLabel;

 @end

 @implementation HMShopCell

 + (instancetype)cellWithWaterflowView:(HMWaterflowView *)waterflowView

 {

     static NSString *ID = @"SHOP";

     HMShopCell *cell = [waterflowView dequeueReusableCellWithIdentifier:ID];

     if (cell == nil) {

         cell = [[HMShopCell alloc] init];

         cell.identifier = ID;

     }

     return cell;

 }

 - (id)initWithFrame:(CGRect)frame

 {

     self = [super initWithFrame:frame];

     if (self) {

         UIImageView *imageView = [[UIImageView alloc] init];

         [self addSubview:imageView];

         self.imageView = imageView;

         UILabel *priceLabel = [[UILabel alloc] init];

         priceLabel.backgroundColor = [UIColor colorWithRed: green: blue: alpha:0.3];

         priceLabel.textAlignment = NSTextAlignmentCenter;

         priceLabel.textColor = [UIColor whiteColor];

         [self addSubview:priceLabel];

         self.priceLabel = priceLabel;

     }

     return self;

 }

 - (void)setShop:(HMShop *)shop

 {

     _shop = shop;

     self.priceLabel.text = shop.price;

     [self.imageView sd_setImageWithURL:[NSURL URLWithString:shop.img] placeholderImage:[UIImage imageNamed:@"loading"]];

 }

 - (void)layoutSubviews

 {

     [super layoutSubviews];

     self.imageView.frame = self.bounds;

     CGFloat priceX = ;

     CGFloat priceH = ;

     CGFloat priceY = self.bounds.size.height - priceH;

     CGFloat priceW = self.bounds.size.width;

     self.priceLabel.frame = CGRectMake(priceX, priceY, priceW, priceH);

 }

 @end

 #import <Foundation/Foundation.h>

 @interface HMShop : NSObject

 @property (nonatomic, assign) CGFloat w;

 @property (nonatomic, assign) CGFloat h;

 @property (nonatomic, copy) NSString *img;

 @property (nonatomic, copy) NSString *price;

 @end

 #import "HMShop.h"

 @implementation HMShop

 @end