UILabel+DDSize

UILabel+DDSize.h

//
//  UILabel+DDSize.h
//
//  Created by Zachary Wentz on 4/7/14.
//  @wentz__

#import <UIKit/UIKit.h>

@interface UILabel (DDSize)

- (void)sizeToFitWithScale;

@end

UILabel+DDSize.m

//
//  UILabel+DDSize.m
//
//  Created by Zachary Wentz on 4/7/14. 
//  @wentz__

#import "UILabel+DDSize.h"

@implementation UILabel (DDSize)

// Scales font to fit label's rectangle, while taking into account set minimumScaleFactor.
// 
// Useful for when you have setup a UILabel in storyboard, and want the text to align to
// the top, but don't want the font to go passed your defined frame's bounds.

- (void)sizeToFitWithScale
{
    CGRect origFrame = self.frame;
    CGFloat minimumFontSize = self.font.pointSize * self.minimumScaleFactor;
    [self sizeToFit];
    CGRect newFrame = self.frame;
    
    do {
        CGFloat newFontSize = self.font.pointSize - 1;
        
        if (newFontSize < minimumFontSize)
            break;
        
        
        self.font = [UIFont fontWithName:self.font.fontName size:newFontSize];
        
        self.frame = origFrame;
        [self sizeToFit];
        newFrame = self.frame;
        
    } while (origFrame.size.height < newFrame.size.height);
}

@end