Return a substring that fits a given rect

gistfile1.m

//
//  NSString+MBDialogString.m
//  TileParser
//
//  Created by Moshe Berman on 9/23/12.
//
//

#import "NSString+MBDialogString.h"

@implementation NSString (MBDialogString)

- (NSString *) substringThatFitsFrame:(CGRect)frame withFont:(UIFont *)font{
    
    NSString *truncatedString = self;
    
    CGSize size = [truncatedString sizeWithFont:font constrainedToSize:CGSizeMake(frame.size.width, CGFLOAT_MAX) lineBreakMode:NSLineBreakByTruncatingTail];

    NSMutableArray *components = [[truncatedString componentsSeparatedByString:@" "] mutableCopy];
    
    while (frame.size.width <= size.width || frame.size.height <= size.height) {

        [components removeLastObject];
        
        truncatedString = [components componentsJoinedByString:@" "];
        
        size = [truncatedString sizeWithFont:font constrainedToSize:frame.size lineBreakMode:NSLineBreakByWordWrapping];
        
    }
    
    return truncatedString;
    
}

@end