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Support for dynamic ranges

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This refactors how we do ranges and implements tuning parameters for a "Render" range and a "Preload" range
This commit is contained in:
Ryan Nystrom
2015-01-30 14:01:32 -08:00
parent 43be3294bc
commit 9c877c51af
9 changed files with 199 additions and 48 deletions
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18
AsyncDisplayKit/Details/ASLayoutController.h
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@@ -2,6 +2,7 @@
#import <UIKit/UIKit.h>
#import <AsyncDisplayKit/ASBaseDefines.h>
typedef struct {
CGFloat leadingBufferScreenfuls;
@@ -16,6 +17,11 @@ typedef NS_ENUM(NSInteger, ASScrollDirection) {
ASScrollDirectionDown,
};
typedef NS_ENUM(NSInteger, ASLayoutRange) {
ASLayoutRangeRender,
ASLayoutRangePreload
};
@protocol ASLayoutController <NSObject>
/**
@@ -23,7 +29,7 @@ typedef NS_ENUM(NSInteger, ASScrollDirection) {
*
* Defaults to a trailing buffer of one screenful and a leading buffer of two screenfuls.
*/
@property (nonatomic, assign) ASRangeTuningParameters tuningParameters;
- (ASRangeTuningParameters)tuningParametersForRange:(ASLayoutRange)range;
- (void)insertNodesAtIndexPaths:(NSArray *)indexPaths withSizes:(NSArray *)nodeSizes;
@@ -35,8 +41,14 @@ typedef NS_ENUM(NSInteger, ASScrollDirection) {
- (void)setVisibleNodeIndexPaths:(NSArray *)indexPaths;
- (BOOL)shouldUpdateForVisibleIndexPath:(NSArray *)indexPath viewportSize:(CGSize)viewportSize;
- (BOOL)shouldUpdateForVisibleIndexPaths:(NSArray *)indexPaths viewportSize:(CGSize)viewportSize range:(ASLayoutRange)range;
- (NSSet *)indexPathsForScrolling:(enum ASScrollDirection)scrollDirection viewportSize:(CGSize)viewportSize;
- (NSSet *)indexPathsForScrolling:(enum ASScrollDirection)scrollDirection viewportSize:(CGSize)viewportSize range:(ASLayoutRange)range;
@property (nonatomic, assign) ASRangeTuningParameters tuningParameters ASDISPLAYNODE_DEPRECATED;
- (BOOL)shouldUpdateForVisibleIndexPath:(NSArray *)indexPath viewportSize:(CGSize)viewportSize ASDISPLAYNODE_DEPRECATED;
- (NSSet *)indexPathsForScrolling:(enum ASScrollDirection)scrollDirection viewportSize:(CGSize)viewportSize ASDISPLAYNODE_DEPRECATED;
@end