Rename CK classes to AS classes

AsyncDisplayKit/TextKit/ASTextKitCoreTextAdditions.h

@@ -0,0 +1,83 @@
+/* Copyright (c) 2014-present, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ */
+
+#import <Foundation/Foundation.h>
+#import <UIKit/UIKit.h>
+
+#import <AsyncDisplayKit/ASBaseDefines.h>
+
+
+ASDISPLAYNODE_EXTERN_C_BEGIN
+/**
+ @abstract Returns whether a given attribute is an unsupported Core Text attribute.
+ @param attributeName The name of the attribute
+ @discussion The following Core Text attributes are not supported on NSAttributedString, and thus will not be preserved during the conversion:
+              - kCTForegroundColorFromContextAttributeName
+              - kCTSuperscriptAttributeName
+              - kCTGlyphInfoAttributeName
+              - kCTCharacterShapeAttributeName
+              - kCTLanguageAttributeName
+              - kCTRunDelegateAttributeName
+              - kCTBaselineClassAttributeName
+              - kCTBaselineInfoAttributeName
+              - kCTBaselineReferenceInfoAttributeName
+              - kCTWritingDirectionAttributeName
+              - kCTUnderlineColorAttributeName
+ @result Whether attributeName is an unsupported Core Text attribute.
+ */
+BOOL ASAttributeWithNameIsUnsupportedCoreTextAttribute(NSString *attributeName);
+
+
+/**
+ @abstract Returns an attributes dictionary for use by NSAttributedString, given a dictionary of Core Text attributes.
+ @param coreTextAttributes An NSDictionary whose keys are CFAttributedStringRef attributes.
+ @discussion The following Core Text attributes are not supported on NSAttributedString, and thus will not be preserved during the conversion:
+              - kCTForegroundColorFromContextAttributeName
+              - kCTSuperscriptAttributeName
+              - kCTGlyphInfoAttributeName
+              - kCTCharacterShapeAttributeName
+              - kCTLanguageAttributeName
+              - kCTRunDelegateAttributeName
+              - kCTBaselineClassAttributeName
+              - kCTBaselineInfoAttributeName
+              - kCTBaselineReferenceInfoAttributeName
+              - kCTWritingDirectionAttributeName
+              - kCTUnderlineColorAttributeName
+ @result An NSDictionary of attributes for use by NSAttributedString.
+ */
+extern NSDictionary *NSAttributedStringAttributesForCoreTextAttributes(NSDictionary *coreTextAttributes);
+
+/**
+  @abstract Returns an NSAttributedString whose Core Text attributes have been converted, where possible, to NSAttributedString attributes.
+  @param dirtyAttributedString An NSAttributedString that may contain Core Text attributes.
+  @result An NSAttributedString that's preserved as many CFAttributedString attributes as possible.
+ */
+extern NSAttributedString *ASCleanseAttributedStringOfCoreTextAttributes(NSAttributedString *dirtyAttributedString);
+
+ASDISPLAYNODE_EXTERN_C_END
+
+#pragma mark -
+#pragma mark -
+@interface NSParagraphStyle (ASTextKitCoreTextAdditions)
+
+/**
+  @abstract Returns an NSParagraphStyle initialized with the paragraph specifiers from the given CTParagraphStyleRef.
+  @param coreTextParagraphStyle A Core Text paragraph style.
+  @discussion It is important to note that not all CTParagraphStyle specifiers are supported by NSParagraphStyle, and consequently, this is a lossy conversion. Notably, the following specifiers will not preserved:
+        - kCTParagraphStyleSpecifierTabStops
+        - kCTParagraphStyleSpecifierDefaultTabInterval
+        - kCTParagraphStyleSpecifierMaximumLineSpacing
+        - kCTParagraphStyleSpecifierMinimumLineSpacing
+        - kCTParagraphStyleSpecifierLineSpacingAdjustment
+        - kCTParagraphStyleSpecifierLineBoundsOptions
+  @result An NSParagraphStyle initializd with as many of the paragraph specifiers from `coreTextParagraphStyle` as possible.
+
+ */
++ (instancetype)paragraphStyleWithCTParagraphStyle:(CTParagraphStyleRef)coreTextParagraphStyle;
+
+@end