UILabel+OKASizeCalculator.m

//
//  UILabel+OKASizeCalculator.m
//
//  Created by Oliver on 16/01/2014.
//  Copyright (c) 2014 Oliver Atkinson. All rights reserved.
//

#import "UILabel+OKASizeCalculator.h"

@implementation UILabel (OKASizeCalculator)

- (CGSize)oka_calculateLabelSizeBoundToSize:(CGSize)boundingSize;
{
  UIFont   *font        = self.font;
  NSString *text        = self.text;
  
  CGSize size;
  if ([text respondsToSelector:@selector(boundingRectWithSize:options:attributes:context:)]) {
    size = [text boundingRectWithSize:boundingSize
                              options:NSStringDrawingUsesLineFragmentOrigin
                           attributes:@{ NSFontAttributeName : font }
                              context:nil].size;
  } else {
    size = [text sizeWithFont:font
            constrainedToSize:boundingSize
                lineBreakMode:self.lineBreakMode];
  }
  
  return CGSizeMake(boundingSize.width, size.height);
}

@end