public override NSObject PhotoAlbumScrollView (NIPhotoAlbumScrollView photoAlbumScrollView, int photoIndex, out NIPhotoScrollViewPhotoSize photoSize, out bool isLoading, out SizeF originalPhotoDimensions) { isLoading = false; photoSize = NIPhotoScrollViewPhotoSize.NIPhotoScrollViewPhotoSizeUnknown; UIImage image; var photoIndexKey = _controller.CacheKeyForPhotoIndex (photoIndex); var photo = Photos [photoIndex]; originalPhotoDimensions = photo.Dimensions; image = (UIImage)_controller.HighQualityImageCache.ObjectWithName (photoIndexKey); if (image != null) { photoSize = NIPhotoScrollViewPhotoSize.NIPhotoScrollViewPhotoSizeOriginal; } else { var source = photo.OriginalSource; _controller.RequestImageFromSource (source, NIPhotoScrollViewPhotoSize.NIPhotoScrollViewPhotoSizeOriginal, photoIndex); isLoading = true; // try to load the thumbnail if we can image = (UIImage)_controller.ThumbnailImageCache.ObjectWithName (photoIndexKey); if (image != null) { photoSize = NIPhotoScrollViewPhotoSize.NIPhotoScrollViewPhotoSizeThumbnail; } else { _controller.RequestImageFromSource(photo.ThumbnailSoruce, NIPhotoScrollViewPhotoSize.NIPhotoScrollViewPhotoSizeThumbnail, photoIndex); } } return image; }
public override void PhotoAlbumScrollViewDidLoadPreviousPhoto (NIPhotoAlbumScrollView photoAlbumScrollView) { // overridden so that the native call won't be made because it isn't implemented in NIToolbarPhotoViewController }