CAWaterfallViewDataSource

由 ?﹏???ζ???﹏﹏? 创建， 最后一次修改 2016-09-07 类说明：        数据代理方法CAWaterfallViewDataSource 方法方法说明waterfallCellAtIndex获取指定cellwaterfallViewHeightForItemAtIndexItem高度numberOfItemsitem数量waterfallViewSectionViewForHeaderwaterfallView的标题图像waterfallViewHeightForHeaderwaterfallView的头部高度waterfallViewSectionViewForFooterwaterfallView的底部图像waterfallViewHeightForFooterwaterfallView的底部高度waterfallViewWillDisplayCellAtIndex回调当前将要显示的waterfallViewCAWaterfallViewDataSource 方法说明virtual CAWaterfallViewCell* waterfallCellAtIndex(CAWaterfallView *waterfallView, const DSize& cellSize, unsigned int itemIndex);返回值：CAWaterfallViewCell* 参数：类型参数名说明CAWaterfallView*waterfallView当前waterfallViewconst DSize&cellSizecell大小unsigned int itemIndex项目Index解释：获取指定cellvirtual unsigned int waterfallViewHeightForItemAtIndex(CAWaterfallView *waterfallView, unsigned int itemIndex);返回值：unsigned int 参数：类型参数名说明CAWaterfallView*waterfallView当前waterfallViewunsigned int itemIndex项目Index解释：Item高度virtual unsigned int numberOfItems(CAWaterfallView *waterfallView);返回值：unsigned int 参数：类型参数名说明CAWaterfallView*waterfallView当前waterfallView解释：item数量virtual CAView* waterfallViewSectionViewForHeader(CAWaterfallView *waterfallView, const DSize& viewSize);返回值：CAView*参数：类型参数名说明CAWaterfallView*waterfallView当前waterfallViewconst DSize&viewSize 图像大小解释：waterfallView的标题图像virtual unsigned int waterfallViewHeightForHeader(CAWaterfallView *waterfallView);返回值：unsigned int 参数：类型参数名说明CAWaterfallView*waterfallView当前waterfallView解释：waterfallView的头部高度virtual CAView* waterfallViewSectionViewForFooter(CAWaterfallView *waterfallView, const DSize& viewSize);返回值：CAView*参数：类型参数名说明CAWaterfallView*waterfallView当前waterfallViewconst DSize&viewSize 图像大小解释：waterfallView的底部图像virtual unsigned int waterfallViewHeightForFooter(CAWaterfallView *waterfallView);返回值：unsigned int参数：类型参数名说明CAWaterfallView*waterfallView当前waterfallView解释：waterfallView的底部高度virtual void waterfallViewWillDisplayCellAtIndex(CAWaterfallView* waterfallView, CAWaterfallViewCell* cell, unsigned int itemIndex) {};返回值：void参数：类型参数名说明CAWaterfallView*waterfallView当前waterfallViewCAWaterfallViewCell*cellcellunsigned int itemIndex项目Index解释：回调当前将要显示的waterfallView