Created
December 25, 2014 09:42
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UIFont + Custon font with Dynamic Sizes
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| #import <UIKit/UIKit.h> | |
| extern NSString* const UIFontTextStyleBoldBody; | |
| @interface UIFont (ContentSize) | |
| + (UIFont*)preferredSystemFontForTextStyle:(NSString*)textStyle; | |
| @end |
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| #import "UIFont+ContentSize.h" | |
| NSString* const UIFontTextStyleBoldBody = @"UIFontTextStyleBoldBody"; | |
| @implementation UIFont (ContentSize) | |
| + (UIFont *)preferredSystemFontForTextStyle:(NSString *)textStyle | |
| { | |
| // choose the font size | |
| CGFloat fontSize = 11.f; | |
| NSString *contentSize = [UIApplication sharedApplication].preferredContentSizeCategory; | |
| static dispatch_once_t onceToken; | |
| static NSDictionary *fontSizeOffsetDictionary; | |
| dispatch_once(&onceToken, ^{ | |
| fontSizeOffsetDictionary = @{ UIContentSizeCategoryExtraSmall : @{ UIFontTextStyleBody : @(-2), | |
| UIFontTextStyleBoldBody: @(-2), | |
| UIFontTextStyleHeadline : @(-2), | |
| UIFontTextStyleSubheadline : @(-4), | |
| UIFontTextStyleCaption1 : @(-5), | |
| UIFontTextStyleCaption2 : @(-5), | |
| UIFontTextStyleFootnote : @(-4) }, | |
| UIContentSizeCategorySmall : @{ UIFontTextStyleBody : @(-1), | |
| UIFontTextStyleBoldBody: @(-1), | |
| UIFontTextStyleHeadline : @(-1), | |
| UIFontTextStyleSubheadline : @(-3), | |
| UIFontTextStyleCaption1 : @(-5), | |
| UIFontTextStyleCaption2 : @(-5), | |
| UIFontTextStyleFootnote : @(-4) }, | |
| UIContentSizeCategoryMedium : @{ UIFontTextStyleBody : @(-2), | |
| UIFontTextStyleBoldBody: @(-2), | |
| UIFontTextStyleHeadline : @(-2), | |
| UIFontTextStyleSubheadline : @(-4), | |
| UIFontTextStyleCaption1 : @(-7), | |
| UIFontTextStyleCaption2 : @(-7), | |
| UIFontTextStyleFootnote : @(-6) }, | |
| UIContentSizeCategoryLarge : @{ UIFontTextStyleBody : @(0), | |
| UIFontTextStyleBoldBody: @(0), | |
| UIFontTextStyleHeadline : @(0), | |
| UIFontTextStyleSubheadline : @(-2), | |
| UIFontTextStyleCaption1 : @(-5), | |
| UIFontTextStyleCaption2 : @(-6), | |
| UIFontTextStyleFootnote : @(-4) }, | |
| UIContentSizeCategoryExtraLarge : @{ UIFontTextStyleBody : @(2), | |
| UIFontTextStyleBoldBody: @(2), | |
| UIFontTextStyleHeadline : @(2), | |
| UIFontTextStyleSubheadline : @(0), | |
| UIFontTextStyleCaption1 : @(-3), | |
| UIFontTextStyleCaption2 : @(-4), | |
| UIFontTextStyleFootnote : @(-2) }, | |
| UIContentSizeCategoryExtraExtraLarge : @{ UIFontTextStyleBody : @(3), | |
| UIFontTextStyleBoldBody: @(3), | |
| UIFontTextStyleHeadline : @(3), | |
| UIFontTextStyleSubheadline : @(1), | |
| UIFontTextStyleCaption1 : @(-2), | |
| UIFontTextStyleCaption2 : @(-3), | |
| UIFontTextStyleFootnote : @(-1) }, | |
| UIContentSizeCategoryExtraExtraExtraLarge : @{ UIFontTextStyleBody : @(4), | |
| UIFontTextStyleBoldBody: @(4), | |
| UIFontTextStyleHeadline : @(4), | |
| UIFontTextStyleSubheadline : @(2), | |
| UIFontTextStyleCaption1 : @(-1), | |
| UIFontTextStyleCaption2 : @(-2), | |
| UIFontTextStyleFootnote : @(0) } | |
| }; | |
| }); | |
| // adjust the default font size based on what the User has set in Settings | |
| CGFloat fontSizeOffset = [fontSizeOffsetDictionary[contentSize][textStyle] doubleValue]; | |
| fontSize += fontSizeOffset; | |
| // choose the font weight | |
| if ([textStyle isEqualToString:UIFontTextStyleHeadline] || | |
| [textStyle isEqualToString:UIFontTextStyleSubheadline] || [textStyle isEqualToString: UIFontTextStyleBoldBody]) { | |
| return [UIFont boldSystemFontOfSize:fontSize]; | |
| } else { | |
| return [UIFont systemFontOfSize:fontSize]; | |
| } | |
| } | |
| @end |
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