70 lines
2.0 KiB
Mathematica
70 lines
2.0 KiB
Mathematica
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// Copyright 2015-present 650 Industries. All rights reserved.
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#import <EXFont/EXFontLoaderProcessor.h>
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#import <EXFont/EXFontLoader.h>
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#import <EXFont/EXFont.h>
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#import <EXFont/EXFontManager.h>
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#import <objc/runtime.h>
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@interface EXFontLoaderProcessor ()
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@property (nonatomic, copy) NSString *fontFamilyPrefix;
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@property (nonatomic, strong) EXFontManager *manager;
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@end
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@implementation EXFontLoaderProcessor
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- (instancetype)initWithFontFamilyPrefix:(NSString *)prefix
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manager:(EXFontManager *)manager
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{
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if (self = [super init]) {
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_fontFamilyPrefix = prefix;
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_manager = manager;
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}
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return self;
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}
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- (instancetype)initWithManager:(EXFontManager *)manager
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{
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return [self initWithFontFamilyPrefix:nil manager:manager];
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}
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- (UIFont *)updateFont:(UIFont *)uiFont
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withFamily:(NSString *)family
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size:(NSNumber *)size
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weight:(NSString *)weight
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style:(NSString *)style
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variant:(NSArray<NSDictionary *> *)variant
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scaleMultiplier:(CGFloat)scaleMultiplier
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{
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const CGFloat defaultFontSize = 14;
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EXFont *exFont = nil;
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// Did we get a new family, and if so, is it associated with an EXFont?
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if (_fontFamilyPrefix && [family hasPrefix:_fontFamilyPrefix]) {
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NSString *suffix = [family substringFromIndex:_fontFamilyPrefix.length];
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exFont = [_manager fontForName:suffix];
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} else if (!_fontFamilyPrefix) {
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exFont = [_manager fontForName:family];
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}
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// Did the passed-in UIFont come from an EXFont?
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if (!exFont && uiFont) {
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exFont = objc_getAssociatedObject(uiFont, EXFontAssocKey);
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}
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// If it's an EXFont, generate the corresponding UIFont, else fallback to React Native's built-in method
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if (exFont) {
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CGFloat computedSize = [size doubleValue] ?: uiFont.pointSize ?: defaultFontSize;
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if (scaleMultiplier > 0.0 && scaleMultiplier != 1.0) {
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computedSize = round(computedSize * scaleMultiplier);
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}
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return [exFont UIFontWithSize:computedSize];
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}
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return nil;
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}
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@end
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