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- //
- // ZLCollectionViewFlowLayout.h
- // ZLCollectionView
- //
- // Created by zhaoliang chen on 2017/6/22.
- // Copyright © 2017年 zhaoliang chen. All rights reserved.
- #import <UIKit/UIKit.h>
- #import "ZLCollectionReusableView.h"
- /**
- * 当前版本 v0.8.4
- * ------ 修改内存泄漏
- **/
- typedef enum {
- //BaseLayout = 1, //基础布局。 用苹果默认的UICollectionView的布局,不去改变。
- LabelLayout = 1, //标签页布局。 一堆label标签的集合
- ClosedLayout = 2, //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
- PercentLayout = 3, //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
- FillLayout = 4, //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。
- AbsoluteLayout = 5, //绝对定位布局 需实现rectOfItem的代理,指定每个item的frame
- } ZLLayoutType;
- @class ZLCollectionViewFlowLayout;
- @protocol ZLCollectionViewFlowLayoutDelegate <NSObject>
- @optional
- //指定是什么布局,如没有指定则为BaseLayout(基础布局)
- - (ZLLayoutType)collectionView:(UICollectionView *)collectionView layout:(ZLCollectionViewFlowLayout *)collectionViewLayout typeOfLayout:(NSInteger)section;
- /**同基础UICollectionView的代理设置**/
- - (CGSize)collectionView:(UICollectionView *)collectionView layout:(ZLCollectionViewFlowLayout *)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath;
- - (CGSize)collectionView:(UICollectionView *)collectionView layout:(ZLCollectionViewFlowLayout *)collectionViewLayout referenceSizeForHeaderInSection:(NSInteger)section;
- - (CGSize)collectionView:(UICollectionView *)collectionView layout:(ZLCollectionViewFlowLayout *)collectionViewLayout referenceSizeForFooterInSection:(NSInteger)section;
- - (UIEdgeInsets)collectionView:(UICollectionView *)collectionView layout:(ZLCollectionViewFlowLayout*)collectionViewLayout insetForSectionAtIndex:(NSInteger)section;
- - (CGFloat)collectionView:(UICollectionView *)collectionView layout:(ZLCollectionViewFlowLayout*)collectionViewLayout minimumLineSpacingForSectionAtIndex:(NSInteger)section;
- - (CGFloat)collectionView:(UICollectionView *)collectionView layout:(ZLCollectionViewFlowLayout*)collectionViewLayout minimumInteritemSpacingForSectionAtIndex:(NSInteger)section;
- /******** 设置每个section的背景色 ***********/
- //设置每个section的背景色
- - (UIColor*)collectionView:(UICollectionView *)collectionView layout:(ZLCollectionViewFlowLayout *)collectionViewLayout backColorForSection:(NSInteger)section;
- //自定义每个section的背景view,需要继承UICollectionReusableView,返回类名
- - (NSString*)collectionView:(UICollectionView *)collectionView layout:(ZLCollectionViewFlowLayout *)collectionViewLayout registerBackView:(NSInteger)section;
- //对section背景进行一些操作
- - (void)collectionView:(UICollectionView *)collectionView layout:(ZLCollectionViewFlowLayout *)collectionViewLayout loadView:(NSInteger)section;
- //背景是否延伸覆盖到headerView,默认为NO
- - (BOOL)collectionView:(UICollectionView *)collectionView layout:(ZLCollectionViewFlowLayout *)collectionViewLayout attachToTop:(NSInteger)section;
- /******** 提取出UICollectionViewLayoutAttributes的一些属性 ***********/
- //设置每个item的zIndex,不指定默认为0
- - (NSInteger)collectionView:(UICollectionView *)collectionView layout:(ZLCollectionViewFlowLayout *)collectionViewLayout zIndexOfItem:(NSIndexPath*)indexPath;
- //设置每个item的CATransform3D,不指定默认为CATransform3DIdentity
- - (CATransform3D)collectionView:(UICollectionView *)collectionView layout:(ZLCollectionViewFlowLayout *)collectionViewLayout transformOfItem:(NSIndexPath*)indexPath;
- //设置每个item的alpha,不指定默认为1
- - (CGFloat)collectionView:(UICollectionView *)collectionView layout:(ZLCollectionViewFlowLayout *)collectionViewLayout alphaOfItem:(NSIndexPath*)indexPath;
- /******** ClosedLayout列布局需要的代理 ***********/
- //在ClosedLayout列布局中指定一行有几列,不指定默认为1列
- - (NSInteger)collectionView:(UICollectionView *)collectionView layout:(ZLCollectionViewFlowLayout*)collectionViewLayout columnCountOfSection:(NSInteger)section;
- /******** PercentLayout百分比布局需要的代理 ***********/
- //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
- - (CGFloat)collectionView:(UICollectionView *)collectionView layout:(ZLCollectionViewFlowLayout*)collectionViewLayout percentOfRow:(NSIndexPath*)indexPath;
- /******** AbsoluteLayout绝对定位布局需要的代理 ***********/
- //在AbsoluteLayout绝对定位布局中指定每个item的frame,不指定默认为CGRectZero
- - (CGRect)collectionView:(UICollectionView *)collectionView layout:(ZLCollectionViewFlowLayout*)collectionViewLayout rectOfItem:(NSIndexPath*)indexPath;
- /******** 拖动cell的相关代理 ***************************/
- - (void)collectionView:(UICollectionView *)collectionView layout:(ZLCollectionViewFlowLayout*)collectionViewLayout didMoveCell:(NSIndexPath*)atIndexPath toIndexPath:(NSIndexPath*)toIndexPath;
- @end
- @interface ZLCollectionViewFlowLayout : UICollectionViewFlowLayout
- @property (nonatomic,assign) id<ZLCollectionViewFlowLayoutDelegate> delegate;
- @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
- @property (nonatomic,assign) BOOL canDrag; //是否允许拖动cell,默认是NO
- @property (nonatomic,assign) BOOL header_suspension; //头部是否悬浮,默认是NO
- @property (nonatomic,assign) ZLLayoutType layoutType; //指定layout的类型,也可以在代理里设置
- @property (nonatomic,assign) NSInteger columnCount; //指定列数
- @end
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