Sometimes the design of the box needs to be x width and when the text gets within x pixels to the end of the box the box should expand up to x point. This way, you can have a set size no matter how little text and ensure that the box does not run off the screen for a long title. If there is too much text then the text should scale.

Here is the use case. For a parade, a list of participants can range from a group with one small name like "Parade Marshal", or something like "Cumberland Renegade Pee Wee Football Team & Cheerleaders".