display of $int...$ under QT5

[Kornel Benko]

Am Tue, 1 Sep 2020 15:49:15 +0200
schrieb Enrico Forestieri <forenr at lyx.org>:

> On Mon, Aug 31, 2020 at 10:11:56PM +0200, Enrico Forestieri wrote:
> > On Mon, Aug 31, 2020 at 07:08:31PM +0200, Pavel Sanda wrote:  
> > > 
> > > At this moment I would like to ask other people on this list, whether
> > > they can sucesfully load fonts/test/check_glyphs.lyx and display
> > > esint glyphs (in particular oiint and alignment of limits around \int)
> > > in any Qt >= 5.12.7 to check whether this is systemic problem or
> > > something related to openSuse packaging.  
> > 
> > I have no issues with Qt 5.15.0. From the screenshots, it seems that
> > a wrong font is loaded. I suggest running "lyx -dbg font", load a
> > document with an integral sign and watch for the loading of esint10.
> > If one gets
> > ...
> > frontends/qt/GuiFontLoader.cpp (205): Looking for font family esint10 ...
> > frontends/qt/GuiFontLoader.cpp (188): got: esint10
> > frontends/qt/GuiFontLoader.cpp (195):  got it
> > frontends/qt/GuiFontLoader.cpp (215): lyx!
> > ...
> > 
> > then it's the correct font. But if it does not say "lyx!", another
> > font (not the one distributed with lyx) is being loaded.
> > 
> > The following command might shed some light on which font file is used:
> > fc-match -v esint10 | grep file:  
> 
> The attached patch should show which font file lyx uses for math fonts.
> This is only for linux. You have to configure lyx using LIBS=-lfontconfig,
> i.e., "configure [your usual options here] LIBS=-lfontconfig".
> 
> After building lyx, create a new document and then a math inset.
> You should then see all used font files printed in the terminal.
> 

Nice.

	Kornel
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