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			136 lines
		
	
	
		
			3.1 KiB
		
	
	
	
		
			Objective-C
		
	
			
		
		
	
	
			136 lines
		
	
	
		
			3.1 KiB
		
	
	
	
		
			Objective-C
		
	
| //
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| //  Copyright (c) 2018 Open Whisper Systems. All rights reserved.
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| //
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| 
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| #import "UIFont+OWS.h"
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| 
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| NS_ASSUME_NONNULL_BEGIN
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| 
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| @implementation UIFont (OWS)
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| 
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| + (UIFont *)ows_thinFontWithSize:(CGFloat)size
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| {
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|     return [UIFont systemFontOfSize:size weight:UIFontWeightThin];
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| }
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| 
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| + (UIFont *)ows_lightFontWithSize:(CGFloat)size
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| {
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|     return [UIFont systemFontOfSize:size weight:UIFontWeightLight];
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| }
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| 
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| + (UIFont *)ows_regularFontWithSize:(CGFloat)size
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| {
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|     return [UIFont systemFontOfSize:size weight:UIFontWeightRegular];
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| }
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| 
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| + (UIFont *)ows_mediumFontWithSize:(CGFloat)size
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| {
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|     return [UIFont systemFontOfSize:size weight:UIFontWeightMedium];
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| }
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| 
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| + (UIFont *)ows_boldFontWithSize:(CGFloat)size
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| {
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|     return [UIFont boldSystemFontOfSize:size];
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| }
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| 
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| #pragma mark - Icon Fonts
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| 
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| + (UIFont *)ows_fontAwesomeFont:(CGFloat)size
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| {
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|     return [UIFont fontWithName:@"FontAwesome" size:size];
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| }
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| 
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| + (UIFont *)ows_dripIconsFont:(CGFloat)size
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| {
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|     return [UIFont fontWithName:@"dripicons-v2" size:size];
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| }
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| 
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| + (UIFont *)ows_elegantIconsFont:(CGFloat)size
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| {
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|     return [UIFont fontWithName:@"ElegantIcons" size:size];
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| }
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| 
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| #pragma mark - Dynamic Type
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| 
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| + (UIFont *)ows_dynamicTypeTitle1Font
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| {
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|     return [UIFont preferredFontForTextStyle:UIFontTextStyleTitle1];
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| }
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| 
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| + (UIFont *)ows_dynamicTypeTitle2Font
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| {
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|     return [UIFont preferredFontForTextStyle:UIFontTextStyleTitle2];
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| }
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| 
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| + (UIFont *)ows_dynamicTypeTitle3Font
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| {
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|     return [UIFont preferredFontForTextStyle:UIFontTextStyleTitle3];
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| }
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| 
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| + (UIFont *)ows_dynamicTypeHeadlineFont
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| {
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|     return [UIFont preferredFontForTextStyle:UIFontTextStyleHeadline];
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| }
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| 
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| + (UIFont *)ows_dynamicTypeSubheadlineFont
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| {
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|     return [UIFont preferredFontForTextStyle:UIFontTextStyleSubheadline];
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| }
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| 
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| + (UIFont *)ows_dynamicTypeBodyFont
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| {
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|     return [UIFont preferredFontForTextStyle:UIFontTextStyleBody];
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| }
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| 
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| + (UIFont *)ows_dynamicTypeFootnoteFont
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| {
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|     return [UIFont preferredFontForTextStyle:UIFontTextStyleFootnote];
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| }
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| 
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| + (UIFont *)ows_dynamicTypeCaption1Font
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| {
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|     return [UIFont preferredFontForTextStyle:UIFontTextStyleCaption1];
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| }
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| 
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| + (UIFont *)ows_dynamicTypeCaption2Font
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| {
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|     return [UIFont preferredFontForTextStyle:UIFontTextStyleCaption2];
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| }
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| 
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| #pragma mark - Styles
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| 
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| - (UIFont *)ows_italic
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| {
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|     return [self styleWithSymbolicTraits:UIFontDescriptorTraitItalic];
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| }
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| 
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| - (UIFont *)ows_bold
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| {
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|     return [self styleWithSymbolicTraits:UIFontDescriptorTraitBold];
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| }
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| 
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| - (UIFont *)styleWithSymbolicTraits:(UIFontDescriptorSymbolicTraits)symbolicTraits
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| {
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|     UIFontDescriptor *fontDescriptor = [self.fontDescriptor fontDescriptorWithSymbolicTraits:symbolicTraits];
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|     UIFont *font = [UIFont fontWithDescriptor:fontDescriptor size:0];
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|     OWSAssert(font);
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|     return font ?: self;
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| }
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| 
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| - (UIFont *)ows_mediumWeight
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| {
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|     // The recommended approach of deriving "medium" weight fonts for dynamic
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|     // type fonts is:
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|     //
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|     // [UIFontDescriptor fontDescriptorByAddingAttributes:...]
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|     //
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|     // But this doesn't seem to work in practice on iOS 11 using UIFontWeightMedium.
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| 
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|     UIFont *derivedFont = [UIFont systemFontOfSize:self.pointSize weight:UIFontWeightMedium];
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|     return derivedFont;
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| }
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| 
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| @end
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| 
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| NS_ASSUME_NONNULL_END
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