I think this can be split into two parts, dealing with math and dealing with other content. May be there would be other parts like dealing with music, etc but I think at the moment those are not really used so I am sort of ignoring them.
The fix I committed only impacts upon math content. I guess it is possible for nested styled elements in MathML although may be not used at the moment. So may be we need to consider that.
I do not see a huge problem, at least conceptually, with treating math nodes as we do by giving it a single brl node, basically a formatted block of Braille is assigned to it, that block being derived in the same way as that block would be for a text device or brf. Whether we should be adding a semantics attribute to child nodes of math nodes I am not sure, I guess it comes down to do we need it and might it help with tracking what liblouisutdml did to get to the result it gave.
For other content are we treating anything as a single block? As an example tables, should liblouisutdml give brl nodes for each cell and its up to the software rendering it to layout the table or does liblouisutdml create a preformatted block of Braille for the whole table?
Michael Whapples On 06/03/2014 17:33, Keith Creasy wrote:
Good question. We may not be handling this properly. I think you could have nested nodes with styles applied. Tables may be a good example. This could cause problems because we are following the <math> element with a <brl> element that represents the entire block of math. This could work in theory but we have to be careful since everywhere else each <brl> element has a discrete action or style applied to it. Is this perhaps a flaw in our architecture? -----Original Message----- From: brailleblaster-bounce@xxxxxxxxxxxxx [mailto:brailleblaster-bounce@xxxxxxxxxxxxx] On Behalf Of Michael Whapples Sent: Thursday, March 06, 2014 10:52 AM To: liblouis-liblouisxml@xxxxxxxxxxxxx; brailleblaster@xxxxxxxxxxxxx Subject: [brailleblaster] Update on my LibLouisUTDML MathML patch Hello, I tested one case I suspected might cause my patch an issue. The case is of having nested nodes which get styles applied. Just for testing purposes I added a style for mrow. OK, may be a bit made up, but this was simply for testing. Unfortunately this lead to no translation appearing in the brl node for the math node. NOTE: When having the config file formatFor textDevice the output did lead to some output, not sure if fully correct (or correct to what would be expected), but more than when formatFor utd. So my questions are: * Was this may be over testing, could nested styled nodes appear in MathML in reality? * Any reason why this should happen? Just immediate thoughts which may guide me on the solution. Michael Whapples
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