How to get the size of a scaled UIImage in UIImageView?

SizeOfImageAspectFix.m

-(CGRect)frameForImage:(UIImage*)image inImageViewAspectFit:(UIImageView*)imageView
{
    float imageRatio = image.size.width / image.size.height;
    
    float viewRatio = imageView.frame.size.width / imageView.frame.size.height;
    
    if(imageRatio < viewRatio)
    {
        float scale = imageView.frame.size.height / image.size.height;
        
        float width = scale * image.size.width;
        
        float topLeftX = (imageView.frame.size.width - width) * 0.5;
        
        return CGRectMake(topLeftX, 0, width, imageView.frame.size.height);
    }
    else
    {
        float scale = imageView.frame.size.width / image.size.width;
        
        float height = scale * image.size.height;
        
        float topLeftY = (imageView.frame.size.height - height) * 0.5;
        
        return CGRectMake(0, topLeftY, imageView.frame.size.width, height);
    }
}