Scaling text to text box expression

[Kalleheikki Kannisto]

Not that I recall this exactly, but I think the logic was along the lines that if you consider a single character as a unit width (“1”), the full “char_count” represents a square within which the text fits. That’s why square root is the length (character count) of a single line. Because this is not a square, however, it needs to take into account both the width-to-height ratio of the actual rectangle and the leading ratio. (In hind sight I believe the leading ratio has to be experimentally derived by changing the slider, it might be a square of the actual value, rather than a scalar. Not sure any more though.)

Kalleheikki Kannisto
Senior Graphic Designer