Issue 4321 - Equations are not exporting correctly in wmf, emf formats
Summary: Equations are not exporting correctly in wmf, emf formats
Alias: None
Product: Math
Classification: Application
Component: code (show other issues)
Version: 641
Hardware: PC Windows XP
: P3 Trivial with 1 vote (vote)
Target Milestone: ---
Assignee: sven.jacobi
QA Contact: issues@sw
Depends on:
Reported: 2002-04-29 23:04 UTC by rheavy
Modified: 2013-08-07 14:56 UTC (History)
2 users (show)

See Also:
Issue Type: DEFECT
Latest Confirmation in: ---
Developer Difficulty: ---

word displays a little "x" (6.89 KB, application/octet-stream)
2002-05-13 13:07 UTC, caolanm
no flags Details
example emf (2.22 KB, application/octet-stream)
2002-05-13 13:22 UTC, caolanm
no flags Details

Note You need to log in before you can comment on or make changes to this issue.
Description rheavy 2002-04-29 23:04:49 UTC
Equations are not exporting correctly in the vector formats *.wmf and *.emf 
using 641d.

1) Test equation: T_3   %omega_2
2) Within Drawing, exported selection as test2.wmf and then test2.emf. (Results 
same if exporting entire page.)
3) Viewed with built-in XP Picture and Fax Viewer:
    a) test2.wmf: Font shown as san serif rather than serif; %omega represented 
as cap I (or lower L) with a hat (not italics).
    b) test2.emf: Error message - Drawing failed.
4) Viewed with IrfanView (popular freeware viewer):
    a) test2.wmf: Font shown as san serif rather than serif; %omega represented 
as cap I (or lower L) with a hat (not italics).
    b) test2.emf: Font shown as san serif rather than serif;  %omega 
represented as a box.
5) Imported and viewed in Word XP: same as IrfanView except test2.emf started 
with a small red X in a white frame over another white frame.
6) Files are posted at: (this earlier test uses a bold %omega but 
results are the same)
Comment 1 thomas.lange 2002-04-30 08:21:36 UTC
TL->CMC: Seems to be your task. Please have a look.
Comment 2 caolanm 2002-04-30 13:17:00 UTC
Well there are a number of parts to this whole problem
a) it is true that we cannot make a proper wmf image of our equations
because the wmf format can only use 8 bit strings and we moved to
unicode (16bit). So wmf doesn't work well as a picture of equations
written in unicode, nor in general as a picture of any of our ole
b) emf can support unicode, so it would be a better choice in general,
but many of the characters used in the equations are in the private
unicode area, so without the starsymbol font installed on the target
system even emf isn't a complete solution unless we can haul the
starsymbol font around with the graphic/document (which is what issue
2192 is all about)
c) despite these two issuess, the "sans serif" vs "serif" problem and
the failure of some programs to display the emf/wmf at all sound like
seperate issues from a/b. If they are reproducable then part c is
probably an issue for the graphics team, or it is possible that our
graphics are being passed around in wmf format so regardless of being
converted to emf at a later stage the damage has been done in the
first conversion to wmf. If that is the case then its probably
something that framework has to address to favour emf over wmf for the
cut and paste business. I'll try and find out.
Comment 3 caolanm 2002-05-13 13:07:31 UTC
Created attachment 1623 [details]
word displays a little "x"
Comment 4 caolanm 2002-05-13 13:22:01 UTC
Created attachment 1624 [details]
example emf
Comment 5 caolanm 2002-05-13 13:54:36 UTC
The wmf graphic problems are unfixable because the equation uses
private unicode symbols, and these cannot be retained in the 8bit wmf
format. But there does seem to be differences in emf handling between
the different applications. output.emf (the last attachment) is gotten
from exporting the previous attachment as .emf, and indeed...

1) If reinserted into writer it is ok, and when viewed in this
IrfanView program its also ok. But when inserted in word or powerpoint
a little red box appears in the top left corner, any idea where the
little box is coming from ? It is possibly a msoffice bug, but an emf
created in irfanview and inserted in word does not show the same x.

2) If we export the graphic as any bitmap format and reinsert the two
graphics, they both look the same in OOo, but both word and irfanview
seem to render the text in the emf differently than we do.

cmc->sj: Theres nothing here to do with the formula editor itself,
these appear to be all graphics issues. Any ideas about where the red
x in word and powerpoint comes from ?, and can anything be done about
the different text rendering styles in emf ?
Comment 6 sven.jacobi 2002-05-16 10:14:59 UTC
sj->cmc: I think the red x is an indicator that Powerpoint or Word is 
having slight problems while displaying the graphic. So we might 
probable have some problems in our emf exporter. I will take a look 
at it.

Comment 7 sven.jacobi 2002-12-06 14:46:08 UTC
The red "x" problem has been fixed, a EMF_EOF action was missing. The 
fix takes place in svtools/source/filter.vcl/wmf/emfwr.cxx -r1.5 and 
should be available in OOo 1.0.2
Comment 8 caolanm 2004-02-13 09:11:57 UTC
marking as closed