[PyQt] QScintilla problem take 2 - style sheets

[Phil Thompson]

On 02/09/2019 16:14, Barry Scott wrote:
> Phil,
> 
> Are you able to comment on this problem?
> 
> Is there something more I need to change in my code or is this a
> problem in the QScintilla code?

Regressions are usually Qt bugs so you need to demonstrate that the 
problem is with either PyQt or QScintilla (and which versions).

Phil

>> On 25 Aug 2019, at 17:29, Barry Scott <barry at barrys-emacs.org> wrote:
>> 
>> I have changed my code to use the high level setFont() call and found 
>> that worked in some cases.
>> But If I set styles on QApplication then QScintilla  does no use the 
>> family from setFont, only the point size.
>> I use setStyleSheet() to customise the UI font use in the larger app.
>> 
>> The attached code shows this issue - it was tested on macOS and I 
>> think uses fonts that are always
>> installed on macOS to show the problem. However this issue is also 
>> present on windows builds.
>> 
>> This looks like a regression going from PyQT 5.12 to PyQt 5.13. Or is 
>> it a deliberate change?
>> 
>> I tested with 2 venv's setup like this:
>> 
>> #!/bin/bash
>> echo "Info: setup PyQt 5.13 with QSci"
>> python3.7 -m venv create qsci-5-13
>> qsci-5-13/bin/pip install PyQt5 QScintilla xml-preferences
>> 
>> echo "Info: setup PyQt 5.12 with QSci"
>> python3.7 -m venv create qsci-5-12
>> qsci-5-12/bin/pip install PyQt5==5.12.2 QScintilla==2.11.1 
>> xml-preferences
>> 
>> Then run the attached code against each venv with and without the 
>> --style option.
>> 
>> The follow 3 runs show identical windows contents.
>> 
>> 	qsci-5-12/bin/python qsci_bug.py
>> 	qsci-5-12/bin/python qsci_bug.py --style
>> 	qsci-5-13/bin/python qsci_bug.py
>> 
>> But this run does not use the intended font.
>> 
>> 	qsci-5-13/bin/python qsci_bug.py --style
>> 
>> Text is draw with different fonts.
>> 
>> Barry
>> 
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