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Added ASTextNodeWordKerner support to ASTextNode

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* Added a member to `ASTextKitAttributes` that is an optional delegate to the struct's NSLayoutManager.
* Changed ASTextNode to set this delegate to an instance of ASTextNodeWordKerner.
* Updated init method of `ASTextKitContext` to take an optional NSLayoutManager delegate
* Added the files in TextKit folder to the public headers (so we can include ASTextNodeTypes.h)
This commit is contained in:
rcancro
2016-01-28 08:38:22 -08:00
parent d433205e5a
commit 7f6f2fed11
10 changed files with 38 additions and 12 deletions
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1
AsyncDisplayKit.podspec
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@@ -13,6 +13,7 @@ Pod::Spec.new do |spec|
'AsyncDisplayKit/*.h',
'AsyncDisplayKit/Details/**/*.h',
'AsyncDisplayKit/Layout/*.h',
'AsyncDisplayKit/TextKit/*.h',
'Base/*.h'
]

2
AsyncDisplayKit.xcodeproj/project.pbxproj
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@@ -137,7 +137,7 @@
254C6B731BF94DF4003EC431 /* ASTextKitCoreTextAdditions.h in Headers */ = {isa = PBXBuildFile; fileRef = 257754BB1BEE458E00737CA5 /* ASTextKitCoreTextAdditions.h */; };
254C6B741BF94DF4003EC431 /* ASTextNodeWordKerner.h in Headers */ = {isa = PBXBuildFile; fileRef = 257754B91BEE458E00737CA5 /* ASTextNodeWordKerner.h */; };
254C6B751BF94DF4003EC431 /* ASTextKitHelpers.h in Headers */ = {isa = PBXBuildFile; fileRef = 257754BA1BEE458E00737CA5 /* ASTextKitHelpers.h */; };
254C6B761BF94DF4003EC431 /* ASTextNodeTypes.h in Headers */ = {isa = PBXBuildFile; fileRef = 257754BC1BEE458E00737CA5 /* ASTextNodeTypes.h */; };
254C6B761BF94DF4003EC431 /* ASTextNodeTypes.h in Headers */ = {isa = PBXBuildFile; fileRef = 257754BC1BEE458E00737CA5 /* ASTextNodeTypes.h */; settings = {ATTRIBUTES = (Public, ); }; };
254C6B771BF94DF4003EC431 /* ASTextKitAttributes.h in Headers */ = {isa = PBXBuildFile; fileRef = 257754951BEE44CD00737CA5 /* ASTextKitAttributes.h */; };
254C6B781BF94DF4003EC431 /* ASTextKitContext.h in Headers */ = {isa = PBXBuildFile; fileRef = 257754961BEE44CD00737CA5 /* ASTextKitContext.h */; };
254C6B791BF94DF4003EC431 /* ASTextKitEntityAttribute.h in Headers */ = {isa = PBXBuildFile; fileRef = 257754981BEE44CD00737CA5 /* ASTextKitEntityAttribute.h */; };

10
AsyncDisplayKit/ASTextNode.mm
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@@ -21,6 +21,7 @@
#import "ASTextKitRenderer.h"
#import "ASTextKitRenderer+Positioning.h"
#import "ASTextKitShadower.h"
#import "ASTextNodeWordKerner.h"
#import "ASInternalHelpers.h"
#import "ASEqualityHelpers.h"
@@ -74,7 +75,7 @@ static NSString *ASTextNodeTruncationTokenAttributeName = @"ASTextNodeTruncation
@end
@interface ASTextNode () <UIGestureRecognizerDelegate>
@interface ASTextNode () <UIGestureRecognizerDelegate, NSLayoutManagerDelegate>
@end
@@ -100,6 +101,10 @@ static NSString *ASTextNodeTruncationTokenAttributeName = @"ASTextNodeTruncation
ASTextKitRenderer *_renderer;
UILongPressGestureRecognizer *_longPressGestureRecognizer;
// Forwards NSLayoutManagerDelegate methods related to word kerning
ASTextNodeWordKerner *_wordKerner;
}
@dynamic placeholderEnabled;
@@ -143,6 +148,8 @@ static NSArray *DefaultLinkAttributeNames = @[ NSLinkAttributeName ];
// on the special placeholder behavior of ASTextNode.
_placeholderColor = ASDisplayNodeDefaultPlaceholderColor();
_placeholderInsets = UIEdgeInsetsMake(1.0, 0.0, 1.0, 0.0);
_wordKerner = [[ASTextNodeWordKerner alloc] init];
}
return self;
@@ -257,6 +264,7 @@ static NSArray *DefaultLinkAttributeNames = @[ NSLinkAttributeName ];
.maximumNumberOfLines = _maximumNumberOfLines,
.exclusionPaths = _exclusionPaths,
.minimumScaleFactor = _minimumScaleFactor,
.layoutManagerDelegate = _wordKerner,
};
}

5
AsyncDisplayKit/TextKit/ASTextKitAttributes.h
View File

@@ -90,6 +90,11 @@ struct ASTextKitAttributes {
*/
NSLayoutManager *(*layoutManagerFactory)(void);
/**
An optional delegate for the NSLayoutManager
*/
id<NSLayoutManagerDelegate> layoutManagerDelegate;
/**
We provide an explicit copy function so we can use aggregate initializer syntax while providing copy semantics for
the NSObjects inside.

3
AsyncDisplayKit/TextKit/ASTextKitContext.h
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@@ -28,7 +28,8 @@
maximumNumberOfLines:(NSUInteger)maximumNumberOfLines
exclusionPaths:(NSArray *)exclusionPaths
constrainedSize:(CGSize)constrainedSize
layoutManagerFactory:(NSLayoutManager*(*)(void))layoutManagerFactory;
layoutManagerFactory:(NSLayoutManager*(*)(void))layoutManagerFactory
layoutManagerDelegate:(id<NSLayoutManagerDelegate>)layoutManagerDelegate;
@property (nonatomic, assign, readwrite) CGSize constrainedSize;

2
AsyncDisplayKit/TextKit/ASTextKitContext.mm
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@@ -28,6 +28,7 @@
exclusionPaths:(NSArray *)exclusionPaths
constrainedSize:(CGSize)constrainedSize
layoutManagerFactory:(NSLayoutManager*(*)(void))layoutManagerFactory
layoutManagerDelegate:(id<NSLayoutManagerDelegate>)layoutManagerDelegate
{
if (self = [super init]) {
// Concurrently initialising TextKit components crashes (rdar://18448377) so we use a global lock.
@@ -37,6 +38,7 @@
_textStorage = (attributedString ? [[NSTextStorage alloc] initWithAttributedString:attributedString] : [[NSTextStorage alloc] init]);
_layoutManager = layoutManagerFactory ? layoutManagerFactory() : [[NSLayoutManager alloc] init];
_layoutManager.usesFontLeading = NO;
_layoutManager.delegate = layoutManagerDelegate;
[_textStorage addLayoutManager:_layoutManager];
_textContainer = [[NSTextContainer alloc] initWithSize:constrainedSize];
// We want the text laid out up to the very edges of the container.

3
AsyncDisplayKit/TextKit/ASTextKitRenderer.mm
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@@ -101,7 +101,8 @@ static NSCharacterSet *_defaultAvoidTruncationCharacterSet()
maximumNumberOfLines:attributes.maximumNumberOfLines
exclusionPaths:attributes.exclusionPaths
constrainedSize:shadowConstrainedSize
layoutManagerFactory:attributes.layoutManagerFactory];
layoutManagerFactory:attributes.layoutManagerFactory
layoutManagerDelegate:attributes.layoutManagerDelegate];
[self truncater];
}

4
AsyncDisplayKit/TextKit/ASTextKitTailTruncater.mm
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@@ -72,8 +72,8 @@
maximumNumberOfLines:1
exclusionPaths:nil
constrainedSize:constrainedRect.size
layoutManagerFactory:nil];
layoutManagerFactory:nil
layoutManagerDelegate:nil];
__block CGRect truncationUsedRect;
[truncationContext performBlockWithLockedTextKitComponents:^(NSLayoutManager *truncationLayoutManager, NSTextStorage *truncationTextStorage, NSTextContainer *truncationTextContainer) {

16
AsyncDisplayKitTests/ASTextKitTruncationTests.mm
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@@ -42,7 +42,8 @@
maximumNumberOfLines:0
exclusionPaths:nil
constrainedSize:constrainedSize
layoutManagerFactory:nil];
layoutManagerFactory:nil
layoutManagerDelegate:nil];
__block NSRange textKitVisibleRange;
[context performBlockWithLockedTextKitComponents:^(NSLayoutManager *layoutManager, NSTextStorage *textStorage, NSTextContainer *textContainer) {
textKitVisibleRange = [layoutManager characterRangeForGlyphRange:[layoutManager glyphRangeForTextContainer:textContainer]
@@ -63,7 +64,8 @@
maximumNumberOfLines:0
exclusionPaths:nil
constrainedSize:constrainedSize
layoutManagerFactory:nil];
layoutManagerFactory:nil
layoutManagerDelegate:nil];
ASTextKitTailTruncater *tailTruncater = [[ASTextKitTailTruncater alloc] initWithContext:context
truncationAttributedString:[self _simpleTruncationAttributedString]
avoidTailTruncationSet:[NSCharacterSet characterSetWithCharactersInString:@""]];
@@ -85,7 +87,8 @@
maximumNumberOfLines:0
exclusionPaths:nil
constrainedSize:constrainedSize
layoutManagerFactory:nil];
layoutManagerFactory:nil
layoutManagerDelegate:nil];
ASTextKitTailTruncater *tailTruncater = [[ASTextKitTailTruncater alloc] initWithContext:context
truncationAttributedString:[self _simpleTruncationAttributedString]
avoidTailTruncationSet:[NSCharacterSet characterSetWithCharactersInString:@"."]];
@@ -108,7 +111,8 @@
maximumNumberOfLines:0
exclusionPaths:nil
constrainedSize:constrainedSize
layoutManagerFactory:nil];
layoutManagerFactory:nil
layoutManagerDelegate:nil];
ASTextKitTailTruncater *tailTruncater = [[ASTextKitTailTruncater alloc] initWithContext:context
truncationAttributedString:[self _simpleTruncationAttributedString]
avoidTailTruncationSet:[NSCharacterSet characterSetWithCharactersInString:@"."]];
@@ -132,7 +136,9 @@
maximumNumberOfLines:0
exclusionPaths:nil
constrainedSize:constrainedSize
layoutManagerFactory:nil];
layoutManagerFactory:nil
layoutManagerDelegate:nil];
XCTAssertNoThrow([[ASTextKitTailTruncater alloc] initWithContext:context
truncationAttributedString:[self _simpleTruncationAttributedString]
avoidTailTruncationSet:[NSCharacterSet characterSetWithCharactersInString:@"."]]);

4
examples/Kittens/Sample/KittenNode.mm
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@@ -16,6 +16,7 @@
#import <AsyncDisplayKit/ASStackLayoutSpec.h>
#import <AsyncDisplayKit/ASInsetLayoutSpec.h>
#import <AsyncDisplayKit/ASTextNodeTypes.h>
static const CGFloat kImageSize = 80.0f;
static const CGFloat kOuterPadding = 16.0f;
@@ -128,7 +129,8 @@ static const CGFloat kInnerPadding = 10.0f;
style.hyphenationFactor = 1.0;
return @{ NSFontAttributeName: font,
NSParagraphStyleAttributeName: style };
NSParagraphStyleAttributeName: style,
ASTextNodeWordKerningAttributeName : @.5};
}
#if UseAutomaticLayout