113 lines
2.7 KiB
Objective-C
113 lines
2.7 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 "RCTFontAttributes.h"
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#import <React/RCTAccessibilityManager.h>
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#import <React/RCTAssert.h>
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#import <React/RCTFont.h>
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#import <React/RCTLog.h>
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@interface RCTFontAttributes ()
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{
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RCTAccessibilityManager *_accessibilityManager;
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}
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@property (nonatomic, strong) UIFont *font;
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@end
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@implementation RCTFontAttributes
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- (instancetype)initWithAccessibilityManager:(RCTAccessibilityManager *)accessibilityManager
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{
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RCTAssertParam(accessibilityManager);
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if (self = [super init]) {
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_accessibilityManager = accessibilityManager;
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_fontSizeMultiplier = _accessibilityManager.multiplier;
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[[NSNotificationCenter defaultCenter] addObserver:self
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selector:@selector(contentSizeMultiplierDidChange)
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name:RCTAccessibilityManagerDidUpdateMultiplierNotification
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object:_accessibilityManager];
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[self updateFont];
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}
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return self;
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}
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- (void)dealloc
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{
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[[NSNotificationCenter defaultCenter] removeObserver:self];
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}
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- (void)contentSizeMultiplierDidChange
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{
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self.fontSizeMultiplier = _accessibilityManager.multiplier;
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}
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- (void)setAllowFontScaling:(BOOL)allowFontScaling
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{
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_allowFontScaling = allowFontScaling;
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[self updateFont];
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}
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- (void)setFontFamily:(NSString *)fontFamily
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{
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_fontFamily = fontFamily;
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[self updateFont];
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}
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- (void)setFontSize:(NSNumber *)fontSize
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{
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_fontSize = fontSize;
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[self updateFont];
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}
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- (void)setFontSizeMultiplier:(CGFloat)fontSizeMultiplier
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{
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_fontSizeMultiplier = fontSizeMultiplier;
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if (_fontSizeMultiplier == 0) {
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RCTLogError(@"fontSizeMultiplier value must be > zero.");
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_fontSizeMultiplier = 1.0;
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}
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[self updateFont];
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}
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- (void)setFontStyle:(NSString *)fontStyle
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{
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_fontStyle = fontStyle;
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[self updateFont];
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}
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- (void)setFontWeight:(NSString *)fontWeight
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{
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_fontWeight = fontWeight;
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[self updateFont];
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}
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- (void)updateFont
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{
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CGFloat scaleMultiplier = self.allowFontScaling ? self.fontSizeMultiplier : 1.0;
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self.font = [RCTFont updateFont:nil
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withFamily:self.fontFamily
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size:self.fontSize
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weight:self.fontWeight
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style:self.fontStyle
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variant:nil
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scaleMultiplier:scaleMultiplier];
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[self.delegate fontAttributesDidChangeWithFont:self.font];
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}
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@end
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