CoreText content Height

gistfile1.m

- (CGSize)sizeForAttributedStringWithWidth:(CGFloat)width
{
    CTTypesetterRef typesetter = CTTypesetterCreateWithAttributedString((__bridge CFAttributedStringRef)self);
    
    CFIndex offset = 0, length;
    CGFloat y = 0;
    do {
        length = CTTypesetterSuggestLineBreak(typesetter, offset, width);
        CTLineRef line = CTTypesetterCreateLine(typesetter, CFRangeMake(offset, length));
        
        CGFloat ascent, descent, leading;
        CTLineGetTypographicBounds(line, &ascent, &descent, &leading);
        
        CFRelease(line);
        
        offset += length;
        y += ascent + descent + leading;
    } while (offset < [self length]);
    
    CFRelease(typesetter);
    
    return CGSizeMake(width, ceil(y));
}