utilities.m

#import "Utilities.h"

@implementation Utilities

+ (CGSize)text:(NSString *)text sizeWithFont:(UIFont *)font constrainedToSize:(CGSize)size {
    if(IOS_NEWER_OR_EQUAL_TO_7) {
        CGRect frame = [text boundingRectWithSize: size
                             options: (NSStringDrawingUsesLineFragmentOrigin | NSStringDrawingUsesFontLeading)
                             attributes: @{NSFontAttributeName: font}
                             context:nil];
        
        return frame.size;
    } else {
        return [text sizeWithFont:font constrainedToSize:size];
    }
}

+ (CGFloat)text:(NSString *)text heightWithFont:(UIFont *)font constrainedToWidth:(CGFloat)width
{
    return [self text:text sizeWithFont:font constrainedToSize:CGSizeMake(width, MAXFLOAT)].height;
}

@end