PNG clipart prevents export DVI / export PS

[Scott Kostyshak]

On Tue, Nov 24, 2020 at 10:39:00AM +0100, Kornel Benko wrote:
> Am Tue, 24 Nov 2020 09:31:39 -0000 (UTC)
> schrieb Guenter Milde <milde at users.sf.net>:
> 
> > Dear LyX developers,
> > 
> > since the latest update/recompile of master:
> > 
> >   Version 2.4.0dev (Wednesday, 18 November 2020) 
> >   Built from git commit hash 0b9c2722
> >   Qt Version (run-time): 5.11.3
> >   Qt Version (compile-time): 5.11.3
> >   
> > export of lib/Intro.lyx (and other lib/*/Intro.lyx) document to DVI or PS
> > fails with 
> > 
> >   ! LaTeX Error: Cannot determine size of graphic in 4421914becf8ea0a5dc0bca7051d
> >   5117b9561dece5c4f1bd2ffc1c5c4c026dae_footnote_png.eps (no BoundingBox).
> > 
> > The offending graphics are clipart/footnote.png and 
> > clipart/reference.png.
> > I suppose a problem with the PNG -> EPS conversion.
> > 
> > * Does anyone else see the problem?
> > 
> > * I see no converter for this transformation (actually not for any PNG->*)
> >   in Tools>Preferences>Converters.
> >   
> >   Should this be handled by QT or am I missing an external converter
> >   dependency? 
> >  
> > 
> > The ctest failures for e.g. 
> > 
> > 	1760 - export/doc/Intro_dvi (Failed)
> > 	1761 - export/doc/Intro_dvi3_texF (Failed)
> > 	1762 - export/doc/Intro_dvi3_systemF (Failed)
> > 	1763 - export/doc/Intro_pdf (Failed)
> > 	1765 - export/doc/Intro_pdf3 (Failed)
> > 
> > indicate that it normally should work.
> > 
> > 
> > Günter
> > 
> 
> Here all these tests pass (updated TL) QT 5.9

Same here.

By the way, I'm not sure we should have conversion of PNG to EPS by default. I think we had a discussion on this and decided it's best to not silently convert bitmap to vector format.

Scott
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