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From "Jeff Vannest" <Jeff.Vann...@jandrconsult.com>
Subject Wrapping Long Text Without Spaces
Date Thu, 05 Apr 2007 12:32:38 GMT
Does FOP only wrap text on spaces? What I'm seeing is that text placed in a
cell will overrun the cell boundaries if the text does not contain a space.

I've attached a PNG showing the symptom. The example contains four cells
(with four column headings) each containing boundary text as follows:

Method: COA BOUNDARY_METHOD 01MAR_ABCDEFGHIJ_END
Operation: COA BOUNDARY_OP 01MAR_ABCDEFGHIJKLMN_END
Procedure: N/A
Component: COA BOUNDARY_COMP 01MAR_ABCDEFGHIJKL_END

Because certain sections of text are very long without spaces, and because
no hyphenation support is configured, the text starts to overrun cell
boundaries.


Analysis of Example
====================

The Method cell correctly wraps after "COA ". However, I'm guessing that
"BOUNDARY_METHOD" is too wide for the cell, so wrapping stops, and instead
"BOUNDARY_METHOD 01MAR_ABCDEFGHIJ_END" is simply printed non-stop across the
first 3 columns.

The Operation cell has a problem. I assume that this cell knows that it
cannot wrap because the Method cell already consumes this space, so it
simply writes all text across columns 2-4.

The Procedure cell prints "N/A" as it should, but it is already obscured by
the Operation overflow text.

The Component cell prints and wraps correctly, but is partially obscured by
the Operation overflow text.


Hyphenation
===========
Why not enable hyphenation support? Good question, with hopefully, a good
answer: Our implementation will be writing chemical and scientific data, and
I assume that they hyphenation patterns will not 1) support scientific names
without ongoing tweaking for every new chemical name added, and 2) be
preferred by our readers, who are very particular that data appear
unaltered.

In our previous solution using Oracle Reports, long words were simply broken
across lines. For example, if the text "COA BOUNDARY_METHOD" did not fit
into a single cell, it might hard-break the text as

COA BOUNDARY_ME
THOD

This is suitable to our readers, since it represents no artificial
modification of the name (no hyphenation), and it does not obscure data in
cells to the right.


Questions
=========

Sooooooooooo.............

1) Can FOP be configured to wrap on characters other than space? Like
underscore, for example? This would decrease the occurrence of the problem.

2) If I were to modify the FOP code to hard-break words when no space is
found, where would that modification occur? (I assume this support would be
"turned on" in the configuration file or whatever.)

Thanks for your thoughts in advance, and for all the hard work you do on
FOP!

Jeff


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