mirror of
https://github.com/vector-im/element-ios.git
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80 lines
2.7 KiB
Objective-C
80 lines
2.7 KiB
Objective-C
/*
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Copyright 2020 New Vector Ltd
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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#import "EventFormatter+DTCoreTextFix.h"
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@import UIKit;
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@import CoreText;
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@import ObjectiveC;
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#pragma mark - UIFont DTCoreText fix
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@interface UIFont (vc_DTCoreTextFix)
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+ (UIFont *)vc_fixedFontWithCTFont:(CTFontRef)ctFont;
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@end
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@implementation UIFont (vc_DTCoreTextFix)
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+ (UIFont *)vc_fixedFontWithCTFont:(CTFontRef)ctFont {
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NSString *fontName = (__bridge_transfer NSString *)CTFontCopyName(ctFont, kCTFontPostScriptNameKey);
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CGFloat fontSize = CTFontGetSize(ctFont);
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UIFont *font = [UIFont fontWithName:fontName size:fontSize];
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// On iOS 13+ "TimesNewRomanPSMT" will be used instead of "SFUI"
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// In case of "Times New Roman" fallback, use system font and reuse UIFontDescriptorSymbolicTraits.
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if ([font.familyName.lowercaseString containsString:@"times new roman"])
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{
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UIFontDescriptorSymbolicTraits symbolicTraits = (UIFontDescriptorSymbolicTraits)CTFontGetSymbolicTraits(ctFont);
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UIFontDescriptor *systemFontDescriptor = [UIFont systemFontOfSize:fontSize].fontDescriptor;
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UIFontDescriptor *finalFontDescriptor = [systemFontDescriptor fontDescriptorWithSymbolicTraits:symbolicTraits];
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font = [UIFont fontWithDescriptor:finalFontDescriptor size:fontSize];
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}
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return font;
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}
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@end
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#pragma mark - Implementation
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@implementation EventFormatter(DTCoreTextFix)
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// DTCoreText iOS 13 fix. See issue and comment here: https://github.com/Cocoanetics/DTCoreText/issues/1168#issuecomment-583541514
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+ (void)fixDTCoreTextFont
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{
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static dispatch_once_t onceToken;
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dispatch_once(&onceToken, ^{
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Class originalClass = object_getClass([UIFont class]);
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#pragma clang diagnostic push
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#pragma clang diagnostic ignored "-Wundeclared-selector"
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SEL originalSelector = @selector(fontWithCTFont:); // DTCoreText method we're overriding
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SEL ourSelector = @selector(vc_fixedFontWithCTFont:); // Use custom implementation
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#pragma clang diagnostic pop
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Method originalMethod = class_getClassMethod(originalClass, originalSelector);
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Method swizzledMethod = class_getClassMethod(originalClass, ourSelector);
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method_exchangeImplementations(originalMethod, swizzledMethod);
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});
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}
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@end
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