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//
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// UMComHorizonMenuView.h
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// UMCommunity
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//
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// Created by umeng on 15/11/26.
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// Copyright © 2015年 Umeng. All rights reserved.
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//
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#import <UIKit/UIKit.h>
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@class UMComSimpleHorizonCollectionCell,UMComSimpleHorizonMenuView,UMComDropdownColumnCell;
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@protocol UMComSimpleHorizonMenuViewDelegate <NSObject>
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@optional;
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//- (NSInteger)numberOfRowInHorizonCollectionView:(UMComHorizonMenuView *)collectionView;
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//
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//- (void)horizonCollectionView:(UMComHorizonMenuView *)collectionView reloadCell:(UMComHorizonCollectionCell *)cell atIndexPath:(NSIndexPath *)indexPath;
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//
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- (void)horizonCollectionView:(UMComSimpleHorizonMenuView *)collectionView didSelectedColumn:(NSInteger)column;
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//
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//- (UIImage *)horizonCollectionView:(UMComHorizonMenuView *)collectionView imageForIndexPath:(NSIndexPath *)indexPath;
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//
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//- (UIImage *)horizonCollectionView:(UMComHorizonMenuView *)collectionView hilightImageForIndexPath:(NSIndexPath *)indexPath;
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//
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//- (NSString *)horizonCollectionView:(UMComHorizonMenuView *)collectionView titleForIndexPath:(NSIndexPath *)indexPath;
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@end
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@interface UMComSimpleHorizonMenuView : UIView
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@property (nonatomic, assign) BOOL isHighLightWhenDidSelected;
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@property (nonatomic, assign) BOOL showScrollIndicator;
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@property (nonatomic, strong) UIView *bottomLine;
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@property (nonatomic, readonly) NSInteger currentIndex;
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@property (nonatomic, readonly) NSInteger lastIndex;
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@property (nonatomic, copy) UIColor *titleHightColor;
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@property (nonatomic, copy) UIColor *titleColor;
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@property (nonatomic, strong) UIImageView *scrollIndicatorView;
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@property (nonatomic, strong) UIView *topLine;
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@property (nonatomic, strong) NSArray *titlesArray;
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@property (nonatomic, strong) UIFont *titleFont;
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@property (nonatomic, weak) id<UMComSimpleHorizonMenuViewDelegate> cellDelegate;
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- (instancetype)initWithFrame:(CGRect)frame titles:(NSArray *)titles;
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- (instancetype)initWithFrame:(CGRect)frame;
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- (void)startIndex:(NSInteger)index;
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- (void)reloadData;
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@end
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@interface UMComSimpleHorizonCollectionCell : UICollectionViewCell
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@property (nonatomic, strong) UIImageView *imageView;
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@property (nonatomic, strong) UILabel *label;
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@property (nonatomic, assign) NSInteger index;
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@end
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//
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// UMComHorizonMenuView.m
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// UMCommunity
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//
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// Created by umeng on 15/11/26.
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// Copyright © 2015年 Umeng. All rights reserved.
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//
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#import "UMComSimpleHorizonMenuView.h"
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#import "UMComResouceDefines.h"
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@interface UMComSimpleHorizonMenuView ()<UICollectionViewDataSource, UICollectionViewDelegate>
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@property (nonatomic, strong) UICollectionViewFlowLayout *currentLayout;
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@property (nonatomic, strong) NSMutableDictionary *indexPathsDict;
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@property (nonatomic, assign) BOOL isTheFirstTime;
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@property (nonatomic, strong) UICollectionView *collectionView;
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@property (nonatomic,strong) NSMutableArray* cellCenterXArray;//cell的中心点坐标Array
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@end
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@implementation UMComSimpleHorizonMenuView
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- (instancetype)initWithFrame:(CGRect)frame titles:(NSArray *)titles;
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{
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self = [super initWithFrame:frame];
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if (self) {
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self.titlesArray = titles;
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[self initSubViews];
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}
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return self;
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}
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- (instancetype)initWithFrame:(CGRect)frame
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{
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self = [self initWithFrame:frame titles:nil];
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return self;
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}
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- (void)initSubViews
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{
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self.cellCenterXArray = [NSMutableArray arrayWithCapacity:2];
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UICollectionViewFlowLayout *currentLayout = [[UICollectionViewFlowLayout alloc]init];
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currentLayout.scrollDirection = UICollectionViewScrollDirectionHorizontal;
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NSInteger itemCount = self.titlesArray.count;
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if (itemCount == 0) {
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itemCount = 1;
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}
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currentLayout.itemSize = CGSizeMake(self.frame.size.width/itemCount, self.frame.size.height);
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// currentLayout.sectionInset = UIEdgeInsetsMake(0.5, 0.5, 0.5, 0.5);
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self.currentLayout = currentLayout;
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_isTheFirstTime = YES;
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_indexPathsDict = [NSMutableDictionary dictionary];
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self.collectionView = [[UICollectionView alloc] initWithFrame:self.bounds collectionViewLayout:currentLayout];
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self.collectionView.dataSource = self;
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self.collectionView.delegate = self;
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[self.collectionView registerClass:[UMComSimpleHorizonCollectionCell class] forCellWithReuseIdentifier:@"UMComHorizonCollectionCell"];
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self.collectionView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
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self.collectionView.backgroundColor = [UIColor clearColor];
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[self addSubview:_collectionView];
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self.backgroundColor = [UIColor clearColor];
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// self.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
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self.titleFont = [UIFont systemFontOfSize:18];
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self.titleColor = [UIColor blackColor];
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self.titleHightColor = [UIColor blackColor];
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//不允许滚动,防止出现滚动条
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self.collectionView.scrollEnabled = NO;
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}
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- (void)reloadData
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{
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[self.collectionView reloadData];
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}
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- (void)setShowScrollIndicator:(BOOL)showScrollIndicator
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{
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_showScrollIndicator = showScrollIndicator;
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if (_showScrollIndicator == YES) {
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self.scrollIndicatorView = [[UIImageView alloc]initWithFrame:CGRectMake(0, self.collectionView.frame.size.height, self.frame.size.width, 1)];
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self.scrollIndicatorView.backgroundColor = [UIColor clearColor];
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[self addSubview:self.scrollIndicatorView];
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}else{
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_scrollIndicatorView.hidden = YES;
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}
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}
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//- (void)startIndex:(NSInteger)index
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//{
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// NSIndexPath *indexPath = [NSIndexPath indexPathForRow:index inSection:0];
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// __weak typeof(self) weakSelf = self;
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// [UIView animateWithDuration:0.25 animations:^{
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//
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// }];
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//}
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#pragma mark -
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- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section
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{
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return self.titlesArray.count;
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}
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- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
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{
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UMComSimpleHorizonCollectionCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:@"UMComHorizonCollectionCell" forIndexPath:indexPath];
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cell.index = indexPath.row;
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cell.label.font = self.titleFont;
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cell.label.text = self.titlesArray[indexPath.row];
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if (self.currentIndex == indexPath.row) {
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cell.label.textColor = self.titleHightColor;
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}else{
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cell.label.textColor = self.titleColor;
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}
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//设置中心点
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CGFloat cellCenterX = cell.center.x;
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if (self.cellCenterXArray.count < self.titlesArray.count) {
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self.cellCenterXArray[indexPath.row] = @(cellCenterX);
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}
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return cell;
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}
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- (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath
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{
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// UMComHorizonCollectionCell *cell = (UMComHorizonCollectionCell *)[collectionView cellForItemAtIndexPath:indexPath];
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__weak typeof(self) weakSelf = self;
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_lastIndex = self.currentIndex;
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_currentIndex = indexPath.row;
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if (self.cellDelegate && [self.cellDelegate respondsToSelector:@selector(horizonCollectionView:didSelectedColumn:)]) {
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//选中的时候，动画scrollIndicatorView
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[UIView animateWithDuration:0.25 animations:^{
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NSNumber* centerXNumber = weakSelf.cellCenterXArray[indexPath.row];
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CGFloat centerX = centerXNumber.floatValue;
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CGFloat centerY = weakSelf.scrollIndicatorView.center.y;
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weakSelf.scrollIndicatorView.center = CGPointMake(centerX, centerY);
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}];
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[self.cellDelegate horizonCollectionView:self didSelectedColumn:indexPath.row];
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}
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[self reloadData];
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}
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- (CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath
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{
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NSInteger itemCount = self.titlesArray.count;
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if (itemCount == 0) {
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itemCount = 1;
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}
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CGSize itemSize = CGSizeMake(collectionView.frame.size.width/itemCount, collectionView.frame.size.height);
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UICollectionViewFlowLayout *layout = (UICollectionViewFlowLayout *)collectionViewLayout;
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layout.minimumLineSpacing = 0;
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layout.minimumInteritemSpacing = 0;
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CGRect frame = self.scrollIndicatorView.frame;
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frame.size.width = itemSize.width;
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self.scrollIndicatorView.frame = frame;
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return itemSize;
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}
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/*
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// Only override drawRect: if you perform custom drawing.
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// An empty implementation adversely affects performance during animation.
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- (void)drawRect:(CGRect)rect {
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// Drawing code
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}
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*/
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//- (void)drawRect:(CGRect)rect
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//{
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// UIColor *color = [UIColor redColor];
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// CGContextRef context = UIGraphicsGetCurrentContext();
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// CGContextSetFillColorWithColor(context, [UIColor whiteColor].CGColor);
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// CGContextFillRect(context, rect);
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// CGContextSetStrokeColorWithColor(context, color.CGColor);
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// CGFloat itemSpaceTopEdge = 6;
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// for (int index = 1; index < self.itemCount; index++) {
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// CGContextStrokeRect(context, CGRectMake(index * self.itemSize.width, itemSpaceTopEdge, self.itemSpace, rect.size.height - itemSpaceTopEdge*2));
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// }
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//}
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@end
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@implementation UMComSimpleHorizonCollectionCell
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- (instancetype)initWithFrame:(CGRect)frame
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{
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self = [super initWithFrame:frame];
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if (self) {
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self.contentView.backgroundColor = [UIColor clearColor];
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self.backgroundColor = [UIColor clearColor];
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self.imageView = [[UIImageView alloc]initWithFrame:CGRectMake(0, 0, frame.size.width, frame.size.height-1)];
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self.imageView.backgroundColor = [UIColor clearColor];
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[self.contentView addSubview:self.imageView];
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self.label = [[UILabel alloc]initWithFrame:CGRectMake(0, 0, self.frame.size.width, self.frame.size.height-1)];
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self.label.backgroundColor = [UIColor clearColor];
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self.label.font = UMComFontNotoSansLightWithSafeSize(15);
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self.label.textAlignment = NSTextAlignmentCenter;
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self.label.textColor = [UIColor blackColor];
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self.label.numberOfLines = 0;
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[self.contentView addSubview:self.label];
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}
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return self;
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}
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@end
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