Trimming thread title at end of a cell rather than at specific number of characters

[sparklywater]

I am currently using a function which trims the thread title automatically after a specified number of characters in the title. Since the thread-title is displayed in a table-cell with a percentage width, the cell automatically expands depending on the size of the screen. I would therefore like to use a function that will trim the thread-title whenever the title reaches the end of the cell, rather than at a fixed position after a certain number of characters. How can I do this?

Here is the code to the current function:

if (strlen($row['thread_title']) > $vbulletin->options['latest_trim'])
       {
		// adds the cutoff ... with fetch_trimmed_title
	    $row['thread_title'] = fetch_trimmed_title($row['thread_title'], $vbulletin->options['latest_trim'], true);
       }