#import "ViewController.h"
#import "YYGestureRecognizer.h"
#import "ScrollTableViewCell.h"
#import "MBProgressHUD+Add.h"
#define ScreenWidth [UIScreen mainScreen].bounds.size.width
#define ScreenHeight [UIScreen mainScreen].bounds.size.height
//虛假的懸浮效果
static CGFloat floatViewHeight = 30.0;

static CGFloat navHeitht = 64;
// 這個(gè)系數(shù)根據(jù)自己喜好設(shè)置大小，=屏幕視圖滑動(dòng)距離/手指滑動(dòng)距離
#define moveScale 2


@interface ViewController ()<UITableViewDelegate,UITableViewDataSource,UIGestureRecognizerDelegate>
@property (nonatomic,weak)UIScrollView *scroll;
@property (nonatomic, strong) NSArray *titles;
@property (nonatomic,weak)UITableView *insetTableView;
@property (nonatomic,assign)CGFloat tableY;
@property (nonatomic,assign)CGFloat tableStartY;
@property (nonatomic,assign)CGFloat scrollY;
@property (nonatomic,assign)CGFloat scrollStartY;

//tableview 的y值 在scrollview中的位置
@property (nonatomic,assign)CGFloat tableFrameY;
@end

@implementation ViewController

- (void)viewDidLoad {

  [super viewDidLoad];
  // Do any additional setup after loading the view, typically from a nib.
  self.view.backgroundColor = [UIColor whiteColor];
  self.title = @"ScrollScroll";
// 有導(dǎo)航最上部視圖是scrollview 內(nèi)部空間位置會(huì)下移，設(shè)置這個(gè)屬性后不下移。
  if ([self respondsToSelector:@selector(setAutomaticallyAdjustsScrollViewInsets:)]) {
    self.automaticallyAdjustsScrollViewInsets = NO;
  }

  UIScrollView *scroll = [[UIScrollView alloc]initWithFrame:CGRectMake(0,navHeitht, ScreenWidth, ScreenHeight-navHeitht)];
  scroll.backgroundColor = [UIColor colorWithRed:0.4 green:0.3 blue:0.2 alpha:1.0];;
  

  [self.view addSubview:scroll];
  self.scroll = scroll;
  
  
  //根據(jù)需求設(shè)置tableview的y值 暫寫(xiě)scroll高的2分之一
   self.tableFrameY = self.scroll.frame.size.height/2;
  
  UIImageView *headImage = [[UIImageView alloc]initWithFrame:CGRectMake(0, 0, ScreenWidth, self.tableFrameY-floatViewHeight)];
  headImage.image = [UIImage imageNamed:@"scrollHead"];
  headImage.contentMode = UIViewContentModeScaleAspectFill;
  [self.scroll addSubview:headImage];
  
  NSArray *titles = @[@"ICO詳情",@"央行放大招",@"比特幣會(huì)漲",@"神秘中本村"];
  self.titles = titles;
   UISegmentedControl *segment = [[UISegmentedControl alloc] initWithFrame:CGRectMake(5, scroll.bounds.size.height/2-30, self.scroll.bounds.size.width - 10, 30)];
   [segment addTarget:self action:@selector(segmentValueChanged:) forControlEvents:UIControlEventValueChanged];
  for (NSString *title in _titles) {
    [segment insertSegmentWithTitle:title atIndex:segment.numberOfSegments animated:false];
  }
  segment.selectedSegmentIndex = 0;
  [self.scroll addSubview:segment];
  
  UITableView *insetTable = [[UITableView alloc]initWithFrame:CGRectMake(0,self.tableFrameY, self.view.bounds.size.width, ScreenHeight-navHeitht-floatViewHeight)];
  insetTable.backgroundColor = [UIColor colorWithRed:0.9 green:0.9 blue:0.9 alpha:1.0];
  
  insetTable.dataSource = self;
  insetTable.delegate = self;
  
 
  [self.scroll addSubview:insetTable];
  self.insetTableView = insetTable;
  
//github搜索 yykit 或yytext 里面有 yygestureRecognizer這個(gè)類(lèi)，這個(gè)類(lèi)需要做一些修改，  // 在yygesture中所有觸摸事件方法里 加上super的方法，原文件里沒(méi)有，否則響應(yīng)鏈條中斷，scroll或tablew的按鈕點(diǎn)擊事件不執(zhí)行。
  //這個(gè)類(lèi)原文件繼承于UIGestureRecognizer， 改為繼承于UIPanGestureRecognizer 否則點(diǎn)擊事件不執(zhí)行。
  //運(yùn)行效果詳見(jiàn)我的demo

  YYGestureRecognizer *yyges = [YYGestureRecognizer new];
  yyges.action = ^(YYGestureRecognizer *gesture, YYGestureRecognizerState state){
    if (state != YYGestureRecognizerStateMoved) return ;
    
    if (CGRectContainsPoint(self.insetTableView.frame, gesture.startPoint)) {
     
     //滑動(dòng)tableview
      [self tableScrollWithGesture:gesture];
      
      
 
    }else{
      
      //滑動(dòng)scrollview
      [self scrollScrollWithGesture:gesture];
      
    }
 
  };
  //必須給scroll 加上手勢(shì) 不要給view加，不然滑動(dòng)tablew的時(shí)候會(huì)錯(cuò)誤判斷去滑動(dòng)scroll。
  [self.scroll addGestureRecognizer:yyges];
  
  //實(shí)現(xiàn)手勢(shì)代理，解決交互沖突
  yyges.delegate = self;
   scroll.contentSize = CGSizeMake(self.view.bounds.size.width, self.tableFrameY+self.insetTableView.frame.size.height);

}
//解決手勢(shì)按鈕沖突
- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch
{
  //如果是 segment或scroll上的其他按鈕，取消手勢(shì)
  if([NSStringFromClass(touch.view.superclass) isEqualToString:@"UIControl"]){
    return NO;
  }


  //
    return YES;
    }
//
- (void)segmentValueChanged:(UISegmentedControl *)segment {
//scroll 到底部
  CGFloat offset = self.scroll.contentSize.height - self.insetTableView.bounds.size.height-floatViewHeight;
  if (offset > 0)
  {
    self.scrollY = offset;
    [self.scroll setContentOffset:CGPointMake(0, offset) animated:YES];
  }
  //TableView到頂部
  self.tableY = 0;
  [self.insetTableView setContentOffset:CGPointMake(0, self.tableY) animated:YES];
}
- (void)tableScrollWithGesture:(YYGestureRecognizer *)gesture{
  CGFloat scrolly;
  
  if (self.tableStartY != gesture.startPoint.y) {
    scrolly = -(gesture.currentPoint.y-gesture.startPoint.y) ;
  }else{
    scrolly = -(gesture.currentPoint.y-gesture.lastPoint.y) ;
  }
  self.tableStartY = gesture.startPoint.y;
  
  self.tableY += scrolly*moveScale;
  
  //為了顯示底部超出屏幕的tableview那部分 滑動(dòng)scrollview 此時(shí)tablewview已經(jīng)滑動(dòng)到了底部
  if (self.tableY> self.insetTableView.contentSize.height-self.insetTableView.bounds.size.height){
    self.scrollY += self.tableY-(self.insetTableView.contentSize.height-self.insetTableView.bounds.size.height);
    
    //tablewview滑動(dòng)到底部就不要滑了
    self.tableY = self.insetTableView.contentSize.height-self.insetTableView.bounds.size.height;
    
  //scrollview 滑動(dòng)到了底部就不要滑動(dòng)了
    if (self.scrollY> self.scroll.contentSize.height-self.insetTableView.bounds.size.height-floatViewHeight){
      self.scrollY = self.scroll.contentSize.height-self.insetTableView.bounds.size.height-floatViewHeight;
      //如果scrollview意外的contentsize 小于自己的大小，scrollview就不要滑了
      if (self.scrollY<0) {
        self.scrollY = 0;
      }
      
    }
    [self.scroll setContentOffset:CGPointMake(0, self.scrollY) animated:YES];
    
    //如果tablewview的cell過(guò)少或行高過(guò)少致使其contentsize 小于自己的大小，tableview就不要滑了
    if (self.tableY<0) {
      self.tableY = 0;
    }
    
  }
  
  
  //如果滑到了tableview的最上部，停止滑動(dòng)tablewview, 如果此時(shí)scrollview 沒(méi)有在最上部就滑動(dòng)scrollview到最上部
  if (self.tableY<0){
    self.scrollY += self.tableY;
    
    //scroll已經(jīng)在最上部了，scroll就不滑了
    if (self.scrollY<0) {
      self.scrollY = 0;
    }
    
    NSLog(@"scroll %lf",self.scrollY);
    [self.scroll setContentOffset:CGPointMake(0, self.scrollY) animated:YES];
    
     //停止滑動(dòng)tablewview
    self.tableY = 0;
    
  }
  NSLog(@"table %lf",self.tableY);
  
  
  [self.insetTableView setContentOffset:CGPointMake(0, self.tableY) animated:YES];
}
- (void)scrollScrollWithGesture:(YYGestureRecognizer *)gesture{
  CGFloat scrolly;
  
  if (self.scrollStartY != gesture.startPoint.y) {
    scrolly = -(gesture.currentPoint.y-gesture.startPoint.y) ;
  }else{
    scrolly = -(gesture.currentPoint.y-gesture.lastPoint.y) ;
  }
  self.scrollStartY = gesture.startPoint.y;
  
  self.scrollY += scrolly*moveScale;
  
  //如果滑到了scroll的底部就不要滑了
  if (self.scrollY> self.scroll.contentSize.height-self.insetTableView.bounds.size.height-floatViewHeight){
    self.scrollY = self.scroll.contentSize.height-self.insetTableView.bounds.size.height-floatViewHeight;
    //如果scrollview意外的contentsize 小于自己的大小，scrollview就不要滑了
    if (self.scrollY<0) {
      self.scrollY = 0;
    }
  }
  //如果滑到了scroll頂部就不要滑了
  if (self.scrollY<0){
    self.scrollY = 0;
  }
  NSLog(@"scroll %lf",self.scrollY);
  
  
  [self.scroll setContentOffset:CGPointMake(0, self.scrollY) animated:YES];
  
}


#pragma mark - 展示tableview的代理

- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {
  return 70;
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
  return 10;
}


- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
  
  ScrollTableViewCell * cell = [tableView dequeueReusableCellWithIdentifier:@"ScrollTableViewCell"];
  if (!cell)
  {
    [tableView registerNib:[UINib nibWithNibName:@"ScrollTableViewCell" bundle:nil] forCellReuseIdentifier:@"ScrollTableViewCell"];
    cell = [tableView dequeueReusableCellWithIdentifier:@"ScrollTableViewCell"];
  }
  
    cell.backgroundColor = [UIColor clearColor];
   
 
  
  cell.selectionStyle = UITableViewCellSelectionStyleNone;
  cell.Titletext.text = [NSString stringWithFormat:@"\t第%zd行",indexPath.row];
  cell.detailText.text = @"滑屏呀滑屏呀劃呀";
  cell.detailText.textColor = self.navigationController.navigationBar.tintColor;
  cell.indexPath = indexPath;
  
  cell.selectCellBlock = ^(NSIndexPath *indexPath) {
    NSString *tip = [NSString stringWithFormat:@"點(diǎn)擊了第%ld組%ld行",indexPath.section,indexPath.row];;
    [MBProgressHUD showMessage:tip view:nil];
    
    NSLog(@"%@",tip);

  };
  
  return cell;
}
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView{
  
  return 3;
}
-(UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section{
  UIView *v = [[UIView alloc]initWithFrame:CGRectMake(0, 0, ScreenWidth, 50)];
  v.backgroundColor = [UIColor orangeColor];
  UILabel *l = [[UILabel alloc]initWithFrame:v.bounds];
  l.text =[NSString stringWithFormat:@"tableview的組頭%ld",section];
  l.textColor = [UIColor whiteColor];
  l.textAlignment = NSTextAlignmentCenter;
  [v addSubview:l];
  return v;
}
//組頭高
-(CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section{
  
  return 50;
  
  
}
//這個(gè)方法不可用了，除非點(diǎn)擊了cellcontenview之外的區(qū)域 只能同過(guò)加按鈕的方式接受點(diǎn)擊事件
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
  NSLog(@"點(diǎn)擊了第%ld行",indexPath.row);
}