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45 lines
2.1 KiB
Objective-C
45 lines
2.1 KiB
Objective-C
//
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// ASTextNodeWordKerner.h
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// Texture
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//
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// Copyright (c) 2014-present, Facebook, Inc. All rights reserved.
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// This source code is licensed under the BSD-style license found in the
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// LICENSE file in the /ASDK-Licenses directory of this source tree. An additional
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// grant of patent rights can be found in the PATENTS file in the same directory.
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//
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// Modifications to this file made after 4/13/2017 are: Copyright (c) 2017-present,
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// Pinterest, Inc. Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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#import <Foundation/Foundation.h>
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#import <UIKit/NSLayoutManager.h>
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#import <AsyncDisplayKit/ASBaseDefines.h>
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NS_ASSUME_NONNULL_BEGIN
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/**
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@abstract This class acts as the NSLayoutManagerDelegate for ASTextNode.
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@discussion Its current job is word kerning, i.e. adjusting the width of spaces to match the set
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wordKernedSpaceWidth. If word kerning is not needed, set the layoutManager's delegate to nil.
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*/
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AS_SUBCLASSING_RESTRICTED
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@interface ASTextNodeWordKerner : NSObject <NSLayoutManagerDelegate>
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/**
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The following @optional NSLayoutManagerDelegate methods are implemented:
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- (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);
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- (NSControlCharacterAction)layoutManager:(NSLayoutManager *)layoutManager shouldUseAction:(NSControlCharacterAction)action forControlCharacterAtIndex:(NSUInteger)charIndex NS_AVAILABLE_IOS(7_0);
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- (CGRect)layoutManager:(NSLayoutManager *)layoutManager boundingBoxForControlGlyphAtIndex:(NSUInteger)glyphIndex forTextContainer:(NSTextContainer *)textContainer proposedLineFragment:(CGRect)proposedRect glyphPosition:(CGPoint)glyphPosition characterIndex:(NSUInteger)charIndex NS_AVAILABLE_IOS(7_0);
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*/
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@end
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NS_ASSUME_NONNULL_END
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