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2716f53220
Summary: This is a complete rewrite of RCTText, the part of React Native which manages Text and TextInput components. Key points: * It's understandable now. It follows a simple architectural pattern, and it's easy to debug and iterate. Text flow layout is a first-class citizen in React Native layout system now, not just a wired special case. It also brings entirely new possibilities such as nested interleaving <Text> and <View> components. * All <Text>-specific APIs were removed from UIManager and co (it's about ~16 public methods which were used exclusively only by <Text>). * It relies on new Yoga measurement/cloning API and on-dirty handler. So, it removes built-in dirty propagation subsystem from RN completely. * It caches string fragments properly and granularly on a per-node basis which makes updating text-containing components more performant. * It does not instantiate UIView for virtual components which reduces memory utilization. * It drastically improves <TextInput> capabilities (e.g. rich text inside single line <TextInput> is now supported). Screenshots: https://cl.ly/2j3r1V0L0324 https://cl.ly/3N2V3C3d3q3R Reviewed By: mmmulani Differential Revision: D6617326 fbshipit-source-id: 35d4d81b35c9870e9557d0211c0e934e6072a41e
86 lines
2.8 KiB
Objective-C
86 lines
2.8 KiB
Objective-C
/**
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* Copyright (c) 2015-present, Facebook, Inc.
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* All rights reserved.
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*
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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 root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*/
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#import <UIKit/UIKit.h>
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#import <React/RCTTextDecorationLineType.h>
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NS_ASSUME_NONNULL_BEGIN
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extern NSString *const RCTTextAttributesIsHighlightedAttributeName;
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extern NSString *const RCTTextAttributesTagAttributeName;
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/**
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* Represents knowledge about all supported *text* attributes
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* assigned to some text component such as <Text>, <VirtualText>,
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* and <TextInput>.
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*/
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@interface RCTTextAttributes : NSObject <NSCopying>
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// Color
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@property (nonatomic, strong, nullable) UIColor *foregroundColor;
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@property (nonatomic, strong, nullable) UIColor *backgroundColor;
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@property (nonatomic, assign) CGFloat opacity;
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// Font
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@property (nonatomic, copy, nullable) NSString *fontFamily;
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@property (nonatomic, assign) CGFloat fontSize;
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@property (nonatomic, assign) CGFloat fontSizeMultiplier;
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@property (nonatomic, copy, nullable) NSString *fontWeight;
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@property (nonatomic, copy, nullable) NSString *fontStyle;
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@property (nonatomic, copy, nullable) NSArray<NSString *> *fontVariant;
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@property (nonatomic, assign) BOOL allowFontScaling;
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@property (nonatomic, assign) CGFloat letterSpacing;
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// Paragraph Styles
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@property (nonatomic, assign) CGFloat lineHeight;
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@property (nonatomic, assign) NSTextAlignment alignment;
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@property (nonatomic, assign) NSWritingDirection baseWritingDirection;
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// Decoration
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@property (nonatomic, strong, nullable) UIColor *textDecorationColor;
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@property (nonatomic, assign) NSUnderlineStyle textDecorationStyle;
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@property (nonatomic, assign) RCTTextDecorationLineType textDecorationLine;
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// Shadow
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@property (nonatomic, assign) CGSize textShadowOffset;
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@property (nonatomic, assign) CGFloat textShadowRadius;
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@property (nonatomic, strong, nullable) UIColor *textShadowColor;
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// Special
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@property (nonatomic, assign) BOOL isHighlighted;
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@property (nonatomic, strong, nullable) NSNumber *tag;
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@property (nonatomic, assign) UIUserInterfaceLayoutDirection layoutDirection;
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#pragma mark - Inheritance
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- (void)applyTextAttributes:(RCTTextAttributes *)textAttributes;
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#pragma mark - Adapters
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/**
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* Text attributes in NSAttributedString terms.
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*/
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- (NSDictionary<NSAttributedStringKey, id> *)effectiveTextAttributes;
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/**
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* Constructed font.
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*/
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- (UIFont *)effectiveFont;
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/**
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* Font size multiplier reflects `allowFontScaling` and `fontSizeMultiplier`.
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*/
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- (CGFloat)effectiveFontSizeMultiplier;
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/**
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* Foreground and background colors with opacity and right defaults.
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*/
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- (UIColor *)effectiveForegroundColor;
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- (UIColor *)effectiveBackgroundColor;
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@end
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NS_ASSUME_NONNULL_END
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