Add 'submodules/AsyncDisplayKit/' from commit '02bedc12816e251ad71777f9d2578329b6d2bef6'

git-subtree-dir: submodules/AsyncDisplayKit
git-subtree-mainline: d06f423e0e
git-subtree-split: 02bedc1281

submodules/AsyncDisplayKit/Source/TextKit/ASTextNodeWordKerner.h

@@ -0,0 +1,37 @@
+//
+//  ASTextNodeWordKerner.h
+//  Texture
+//
+//  Copyright (c) Facebook, Inc. and its affiliates.  All rights reserved.
+//  Changes after 4/13/2017 are: Copyright (c) Pinterest, Inc.  All rights reserved.
+//  Licensed under Apache 2.0: http://www.apache.org/licenses/LICENSE-2.0
+//
+
+#import <Foundation/Foundation.h>
+#import <UIKit/NSLayoutManager.h>
+
+#import <AsyncDisplayKit/ASBaseDefines.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+/**
+  @abstract This class acts as the NSLayoutManagerDelegate for ASTextNode.
+  @discussion Its current job is word kerning, i.e. adjusting the width of spaces to match the set
+    wordKernedSpaceWidth. If word kerning is not needed, set the layoutManager's delegate to nil.
+ */
+AS_SUBCLASSING_RESTRICTED
+@interface ASTextNodeWordKerner : NSObject <NSLayoutManagerDelegate>
+
+/**
+  The following @optional NSLayoutManagerDelegate methods are implemented:
+
+- (NSUInteger)layoutManager:(NSLayoutManager *)layoutManager shouldGenerateGlyphs:(const CGGlyph *)glyphs properties:(const NSGlyphProperty *)props characterIndexes:(const NSUInteger *)charIndexes font:(UIFont *)aFont forGlyphRange:(NSRange)glyphRange NS_AVAILABLE_IOS(7_0);
+
+- (NSControlCharacterAction)layoutManager:(NSLayoutManager *)layoutManager shouldUseAction:(NSControlCharacterAction)action forControlCharacterAtIndex:(NSUInteger)charIndex NS_AVAILABLE_IOS(7_0);
+
+- (CGRect)layoutManager:(NSLayoutManager *)layoutManager boundingBoxForControlGlyphAtIndex:(NSUInteger)glyphIndex forTextContainer:(NSTextContainer *)textContainer proposedLineFragment:(CGRect)proposedRect glyphPosition:(CGPoint)glyphPosition characterIndex:(NSUInteger)charIndex NS_AVAILABLE_IOS(7_0);
+ */
+
+@end
+
+NS_ASSUME_NONNULL_END