pptx import filter

Radek Doulik rodo at novell.com
Mon Aug 20 04:41:21 PDT 2012

Hi Jean-Tiare,

On Sun, 2012-08-19 at 10:25 -0400, Jean-Tiare LE BIGOT wrote:
> Hi all,
> Thanks for the tip. I spend hours tracing the bug with GDB but I stuck. 
> I can not figure out where to fix it.
> Here is the situation: I have a pptx file with
> - title (fine)
> - 4 items in a list (buggy)
> In Powerpoint, all the text in the list is 18p but a signe word is 8p.
> In Impress, the begin of the text is 20p, the word at 8p is 8p an the 
> remaining text is 8p also.
> After bisecting the pptx file, it appears that there is an empty "span" 
> at the very beginning of the first list item. It's size is set to 20p. 
> The only other "span" with a size specified is the one at 8p. All other 
> elements have no size information on them.
> When an element has no size specified, it is imported with the same size 
> as the immediate previous element whereas it should take the default 
> size specified in the theme. In my case, the size is specified in the 
> MasterSlide->OtherStyle->lvl1pPr.
> in the import filter, there is a file 
> oox/source/drawingml/textrun.cxx:63 This is the only line where the size 
> appears to be used in a computation. Ideed, manually forcing the size to 
> 18 when at 0 fixes the problem for me.
> But... It's really not the right place nor the right way to do it since 
> it would orverride the theme...
> I also know the themes in the master slide are imported properly.
> I also traced the code down to pptshape.cxx where the text seems to be 
> imported into the core. I obviously missed something...
> My question is: where can I fix this ????

you run into quite complex area. The text list style can be set from
many sources (presentation style, master style, theme,
placeholders, .... with various precedence). I think ppt/pptshape.cxx
and drawingml/shape.cxx are right places to look at.

I would start at Shape::createAndInsert and look where the wrong size
appears and try to find where it comes from and/or if the master style
was applied.


> Thanks a lot for your help (and patient reading)
> Le 2012-08-17 15:31, Miklos Vajna a écrit :
> > On Fri, Aug 17, 2012 at 03:54:25PM +0200, Jean-Tiare LE BIGOT <admin at jtlebi.fr> wrote:
> >> Is there anyone already working on the pptx import filter ?
> >> I'd like to work on the font size import.
> >>
> >> Is there any code shared between the pptx/docx/... filters ?
> >
> > Hi,
> >
> > Look under the oox/ module, that's shared between docx/xlsx/pptx.
> >
> > Miklos
> > _______________________________________________
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> > LibreOffice at lists.freedesktop.org
> > http://lists.freedesktop.org/mailman/listinfo/libreoffice
> >

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