[Libreoffice-bugs] [Bug 125668] Equations are not converted correctly

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=125668

V Stuart Foote <vstuart.foote at utsa.edu> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
           See Also|                            |https://bugs.documentfounda
                   |                            |tion.org/show_bug.cgi?id=11
                   |                            |7658
          Component|Writer                      |Formula Editor
     Ever confirmed|0                           |1
            Version|3.3.0 release               |unspecified
             Blocks|                            |107810
                 CC|                            |caolanm at redhat.com,
                   |                            |rb.henschel at t-online.de,
                   |                            |tabe at fixedpoint.jp,
                   |                            |vstuart.foote at utsa.edu

--- Comment #3 from V Stuart Foote <vstuart.foote at utsa.edu> ---
Confirming on current master/6.4.0alpha0 and 6.2.4.2 builds on Windows 10

There are several issues.

First is font mishandling--because the OOXML is using Cambria Math and
assigning Unicode SMP codepoints from the Mathematical Alphanumeric Symbols
block. Specifically U+1d465 Mathamatical Italic Small X. Since the LibreOffice
formula editor defaults to Liberation Serif for variables it has no coverage of
the block, nor is there any font fallback, and the variable from the OLE
formula shows a blank when rendered.

But an easy workaround, setting LO formula editor to use the same font as MS
Office Equation editor -- Cambria Math, the variable(s) will show on the
document canvas.

The other issues on slide one and two of attachment 151885, where a text box
using bullets is holding the OLE formulas. 

1) The import filter incorrectly positions and sizes the OLE to the full size
of the imported Text box--stretching the formula. Should either keep defaults
for LO Formula editor, or better read the font size from the object in XML

2) On filter import LibreOffice displays both the Text box bullets, but also
the fallback image (media/image5.png on slide one, and media/image6.png on
slide two). And slide two shows "double struck" for the text bullet as the
import is positioned incorrectly, that is bug 117658 -- the import filter
should do one or the other. Either import the just the image, or import just
the bullets of the Text box.

3) On slide two, the Formula OLE for the bullet is not rendered, so only see
the fallback image. But by deleting the initial text bullet it allows the
Formula OLE to render. So the import filter is not handling the OLE in the text
box when other text bullets are present.


Referenced Bugs:

https://bugs.documentfoundation.org/show_bug.cgi?id=107810
[Bug 107810] [META] OLE/Embedded object bugs and enhancements
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