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QXLive/Third/ZLCollectionViewFlowLayout/ZLCollectionViewBaseFlowLayout.h
Executable file
136
QXLive/Third/ZLCollectionViewFlowLayout/ZLCollectionViewBaseFlowLayout.h
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//
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// ZLCollectionViewBaseFlowLayout.h
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// ZLCollectionView
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//
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// Created by zhaoliang chen on 2019/1/25.
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// Copyright © 2019 zhaoliang chen. All rights reserved.
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//
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#import <UIKit/UIKit.h>
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#import "ZLBaseEventModel.h"
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/**
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版本：1.4.9
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*/
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NS_ASSUME_NONNULL_BEGIN
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typedef enum {
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LabelHorizontalLayout = 1, //标签横向
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LabelVerticalLayout = 2, //标签纵向
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LabelLayout = LabelHorizontalLayout, //标签页布局。 一堆label标签的集合
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ClosedLayout = 3,
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ColumnLayout = ClosedLayout, //列布局 指定列数，按列数来等分一整行，itemSize的width可以任意写，在布局中会自动帮你计算。可用于瀑布流，普通UITableViewCell
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PercentLayout = 4, //百分比布局 需实现percentOfRow的代理，根据设定值来计算每个itemSize的宽度
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FillLayout = 5, //填充式布局 将一堆大小不一的view见缝插针的填充到一个平面内，规则为先判断从左到右是否有间隙填充，再从上到下判断。
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AbsoluteLayout = 6, //绝对定位布局 需实现rectOfItem的代理，指定每个item的frame
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} ZLLayoutType;
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typedef enum {
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minHeight = 1, // 按最小高度
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Sequence = 2, // 按顺序
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} ZLColumnSortType;
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@class ZLCollectionViewBaseFlowLayout;
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@protocol ZLCollectionViewBaseFlowLayoutDelegate <NSObject, UICollectionViewDelegateFlowLayout>
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@optional
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//指定是什么布局，如没有指定则为FillLayout(填充式布局)
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- (ZLLayoutType)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewFlowLayout *)collectionViewLayout typeOfLayout:(NSInteger)section;
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/******** 设置每个section的背景色 ***********/
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//设置每个section的背景色
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- (UIColor*)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewFlowLayout *)collectionViewLayout backColorForSection:(NSInteger)section;
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//设置每个section的背景图
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- (UIImage*)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewFlowLayout *)collectionViewLayout backImageForSection:(NSInteger)section;
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//自定义每个section的背景view，需要继承UICollectionReusableView(如要调用方法传递参数需要继承ZLCollectionBaseDecorationView)，返回类名
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- (NSString*)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewFlowLayout *)collectionViewLayout registerBackView:(NSInteger)section;
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//向每个section自定义背景view传递自定义方法 eventName:方法名（注意带参数的方法名必须末尾加:）,parameter:参数
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- (ZLBaseEventModel*)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewFlowLayout *)collectionViewLayout backgroundViewMethodForSection:(NSInteger)section;
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//背景是否延伸覆盖到headerView，默认为NO
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- (BOOL)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewFlowLayout *)collectionViewLayout attachToTop:(NSInteger)section;
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//背景是否延伸覆盖到footerView，默认为NO
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- (BOOL)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewFlowLayout *)collectionViewLayout attachToBottom:(NSInteger)section;
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/******** 提取出UICollectionViewLayoutAttributes的一些属性 ***********/
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//设置每个item的zIndex，不指定默认为0
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- (NSInteger)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewFlowLayout *)collectionViewLayout zIndexOfItem:(NSIndexPath*)indexPath;
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//设置每个item的CATransform3D，不指定默认为CATransform3DIdentity
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- (CATransform3D)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewFlowLayout *)collectionViewLayout transformOfItem:(NSIndexPath*)indexPath;
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//设置每个item的alpha，不指定默认为1
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- (CGFloat)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewFlowLayout *)collectionViewLayout alphaOfItem:(NSIndexPath*)indexPath;
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/******** ClosedLayout列布局需要的代理 ***********/
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//在ClosedLayout列布局中指定一行有几列，不指定默认为1列
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- (NSInteger)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewFlowLayout*)collectionViewLayout columnCountOfSection:(NSInteger)section;
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//在ClosedLayout列布局中指定哪列哪行可以是单行布局，不指定以上个方法为准
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- (BOOL)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewFlowLayout*)collectionViewLayout singleColumnCountOfIndexPath:(NSIndexPath*)indexPath;
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/******** PercentLayout百分比布局需要的代理 ***********/
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//在PercentLayout百分比布局中指定每个item占该行的几分之几，如3.0/4，注意为大于0小于等于1的数字。不指定默认为1
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- (CGFloat)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewFlowLayout*)collectionViewLayout percentOfRow:(NSIndexPath*)indexPath;
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/******** AbsoluteLayout绝对定位布局需要的代理 ***********/
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//在AbsoluteLayout绝对定位布局中指定每个item的frame，不指定默认为CGRectZero
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- (CGRect)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewFlowLayout*)collectionViewLayout rectOfItem:(NSIndexPath*)indexPath;
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/******** 拖动cell的相关代理 ***************************/
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//- (BOOL)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewFlowLayout*)collectionViewLayout shouldMoveCell:(NSIndexPath*)indexPath;
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- (void)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewFlowLayout*)collectionViewLayout didMoveCell:(NSIndexPath*)atIndexPath toIndexPath:(NSIndexPath*)toIndexPath;
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@end
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/***
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此类是基类，不要调用。
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纵向布局请调用 #import "ZLCollectionViewVerticalLayout.h"
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横向布局请调用 #import "ZLCollectionViewHorzontalLayout.h"
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***/
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@interface ZLCollectionViewBaseFlowLayout : UICollectionViewFlowLayout
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@property (nonatomic,weak) id<ZLCollectionViewBaseFlowLayoutDelegate> delegate;
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@property (nonatomic,assign) BOOL isFloor; // 宽度是否向下取整，默认YES，用于填充布局，未来加入百分比布局
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@property (nonatomic,assign) BOOL canDrag; //是否允许拖动cell，默认是NO
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@property (nonatomic,assign) BOOL header_suspension; //头部是否悬浮，默认是NO
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@property (nonatomic,assign) ZLLayoutType layoutType; //指定layout的类型，也可以在代理里设置
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@property (nonatomic,assign) NSInteger columnCount; //指定列数
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@property (nonatomic,assign) ZLColumnSortType columnSortType; // 瀑布流列排序的方式
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@property (nonatomic,assign) CGFloat fixTop; //header偏移量
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@property (nonatomic,assign) CGFloat xBeyond; //x轴允许超出的偏移量（仅填充布局，默认3px）
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//每个section的每一列的高度
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@property (nonatomic, strong) NSMutableArray *collectionHeightsArray;
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//存放每一个cell的属性
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@property (nonatomic, strong) NSMutableArray *attributesArray;
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//存放header属性, 外部不要干预
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@property (nonatomic, strong, readonly) NSMutableArray *headerAttributesArray;
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//是否需要重新计算所有布局
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//内部控制，一般情况外部无需干预(内部会在外部调用reloadData,insertSections,insertItems,deleteItems...等方法调用时将此属性自动置为YES)
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@property (nonatomic, assign, readonly) BOOL isNeedReCalculateAllLayout;
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//提供一个方法来设置isNeedReCalculateAllLayout (之所以提供是因为特殊情况下外部可能需要强制重新计算布局)
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//比如需要强制刷新布局时，可以先调用此函数设置为YES, 一般情况外部无需干预
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- (void)forceSetIsNeedReCalculateAllLayout:(BOOL)isNeedReCalculateAllLayout;
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// 注册所有的背景view(传入类名)
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- (void)registerDecorationView:(NSArray<NSString*>*)classNames;
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@end
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NS_ASSUME_NONNULL_END
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