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62 lines
2.4 KiB
62 lines
2.4 KiB
1 year ago
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// WSLWaterFlowLayout.h
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// zzjk
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//
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// Created by 沙狐 on 2020/6/11.
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// Copyright © 2020 沙狐. All rights reserved.
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//
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#import <UIKit/UIKit.h>
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typedef enum {
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WSLWaterFlowVerticalEqualWidth = 0, /** 竖向瀑布流 item等宽不等高 */
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WSLWaterFlowHorizontalEqualHeight = 1, /** 水平瀑布流 item等高不等宽 不支持头脚视图*/
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WSLWaterFlowVerticalEqualHeight = 2, /** 竖向瀑布流 item等高不等宽 */
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WSLWaterFlowHorizontalGrid = 3, /** 特为国务院客户端原创栏目滑块样式定制-水平栅格布局 仅供学习交流*/
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WSLLineWaterFlow = 4 /** 线性布局 待完成，敬请期待 */
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} WSLWaterFlowLayoutStyle; //样式
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@class WSLWaterFlowLayout;
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@protocol WSLWaterFlowLayoutDelegate <NSObject>
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/**
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返回item的大小
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注意：根据当前的瀑布流样式需知的事项：
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当样式为WSLWaterFlowVerticalEqualWidth 传入的size.width无效 ，所以可以是任意值，因为内部会根据样式自己计算布局
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WSLWaterFlowHorizontalEqualHeight 传入的size.height无效 ，所以可以是任意值 ，因为内部会根据样式自己计算布局
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WSLWaterFlowHorizontalGrid 传入的size宽高都有效， 此时返回列数、行数的代理方法无效，
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WSLWaterFlowVerticalEqualHeight 传入的size宽高都有效， 此时返回列数、行数的代理方法无效
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*/
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- (CGSize)waterFlowLayout:(WSLWaterFlowLayout *)waterFlowLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath;
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/** 头视图Size */
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-(CGSize )waterFlowLayout:(WSLWaterFlowLayout *)waterFlowLayout sizeForHeaderViewInSection:(NSInteger)section;
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/** 脚视图Size */
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-(CGSize )waterFlowLayout:(WSLWaterFlowLayout *)waterFlowLayout sizeForFooterViewInSection:(NSInteger)section;
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@optional //以下都有默认值
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/** 列数*/
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-(CGFloat)columnCountInWaterFlowLayout:(WSLWaterFlowLayout *)waterFlowLayout;
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/** 行数*/
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-(CGFloat)rowCountInWaterFlowLayout:(WSLWaterFlowLayout *)waterFlowLayout;
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/** 列间距*/
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-(CGFloat)columnMarginInWaterFlowLayout:(WSLWaterFlowLayout *)waterFlowLayout;
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/** 行间距*/
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-(CGFloat)rowMarginInWaterFlowLayout:(WSLWaterFlowLayout *)waterFlowLayout;
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/** 边缘之间的间距*/
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-(UIEdgeInsets)edgeInsetInWaterFlowLayout:(WSLWaterFlowLayout *)waterFlowLayout;
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@end
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@interface WSLWaterFlowLayout : UICollectionViewLayout
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/** delegate*/
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@property (nonatomic, weak) id<WSLWaterFlowLayoutDelegate> delegate;
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/** 瀑布流样式*/
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@property (nonatomic, assign) WSLWaterFlowLayoutStyle flowLayoutStyle;
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@end
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