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Rename ASTextKitHelpers to ASTextKitComponents and make the header public

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Eric Jensen
2016-03-26 15:31:53 -07:00
parent 5be3b0137a
commit 387abbff5d
8 changed files with 24 additions and 24 deletions
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66
AsyncDisplayKit/TextKit/ASTextKitComponents.h Normal file
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/* 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 <UIKit/UIKit.h>
#import <AsyncDisplayKit/ASBaseDefines.h>
NS_ASSUME_NONNULL_BEGIN
ASDISPLAYNODE_INLINE CGFloat ceilPixelValueForScale(CGFloat f, CGFloat scale)
{
// Round up to device pixel (.5 on retina)
return ceilf(f * scale) / scale;
}
ASDISPLAYNODE_INLINE CGSize ceilSizeValue(CGSize s)
{
CGFloat screenScale = [UIScreen mainScreen].scale;
s.width = ceilPixelValueForScale(s.width, screenScale);
s.height = ceilPixelValueForScale(s.height, screenScale);
return s;
}
@interface ASTextKitComponents : NSObject
/**
@abstract Creates the stack of TextKit components.
@param attributedSeedString The attributed string to seed the returned text storage with, or nil to receive an blank text storage.
@param textContainerSize The size of the text-container. Typically, size specifies the constraining width of the layout, and FLT_MAX for height. Pass CGSizeZero if these components will be hooked up to a UITextView, which will manage the text container's size itself.
@return An `ASTextKitComponents` containing the created components. The text view component will be nil.
@discussion The returned components will be hooked up together, so they are ready for use as a system upon return.
*/
+ (instancetype)componentsWithAttributedSeedString:(nullable NSAttributedString *)attributedSeedString
textContainerSize:(CGSize)textContainerSize;
/**
@abstract Creates the stack of TextKit components.
@param textStorage The NSTextStorage to use.
@param textContainerSize The size of the text-container. Typically, size specifies the constraining width of the layout, and FLT_MAX for height. Pass CGSizeZero if these components will be hooked up to a UITextView, which will manage the text container's size itself.
@param layoutManager The NSLayoutManager to use.
@return An `ASTextKitComponents` containing the created components. The text view component will be nil.
@discussion The returned components will be hooked up together, so they are ready for use as a system upon return.
*/
+ (instancetype)componentsWithTextStorage:(NSTextStorage *)textStorage
textContainerSize:(CGSize)textContainerSize
layoutManager:(NSLayoutManager *)layoutManager;
/**
@abstract Returns the bounding size for the text view's text.
@param constrainedWidth The constraining width to be used during text-sizing. Usually, this value should be the receiver's calculated size.
@result A CGSize representing the bounding size for the receiver's text.
*/
- (CGSize)sizeForConstrainedWidth:(CGFloat)constrainedWidth;
@property (nonatomic, strong, readonly) NSTextStorage *textStorage;
@property (nonatomic, strong, readonly) NSTextContainer *textContainer;
@property (nonatomic, strong, readonly) NSLayoutManager *layoutManager;
@property (nullable, nonatomic, strong) UITextView *textView;
@end
NS_ASSUME_NONNULL_END