Justification in HEAD

[Chris Bowditch]

Fellow FOP Devs,

I've been thnking about how to implement Justified text in HEAD, and 
would appreciate some suggestions/comments on my thought process.

I know Joerg posted something on this back in November in which he said 
the missing piece was the renderer not resizing the spaces, but the 
problem is deeper than this.

The child LM of Line LM is Text LM. It appears that when dealing with 
just plain text paragraphs, i.e. no fo:inlines or fo:wrapper changing 
fonts within a line, etc, then there is almost a 1:1 relationship 
between Line LM and Text LM. So when renderText is called on the 
renderer it is presented with a whole line of text, and there is no 
opportunity to insert extra spaces. Unless the renderer is going to 
break this string and place individual characters, but that to me seems 
wrong.

So question is should TextLM.getNextBreakPoss be splitting the line into 
individual words? Which can then be placed by the renderer with the 
space adjustment required for justification. I believe this is similar 
to how it works in the maintenance branch. Although I'm sure TextLM is 
keeping lines together for a good reason.

Chris