[Development] Updated high-DPI support for Qt 5.14

Mark De Wit mark.dewit at iesve.com
Thu Oct 3 09:44:23 CEST 2019

Is there a chance that the high-dpi work will fix the dpi-awareness of the Fusion theme as reported in https://bugreports.qt.io/browse/QTBUG-74100 ?

Last time I checked there was a fair amount of drawing code that didn't check what screen a widget was on, and hence used "global" scaling (if any).


> -----Original Message-----
> From: Development <development-bounces at qt-project.org> On Behalf Of
> Christoph Cullmann
> Sent: 01 October 2019 22:19
> To: development at qt-project.org
> Subject: Re: [Development] Updated high-DPI support for Qt 5.14
> Hi,
> actually, unrelated to how one can configure the stuff, at the moment, I see
> still a lot of Qt internal rendering artifacts for fractional scaling.
> See https://bugreports.qt.io/browse/QTBUG-66036
> For some I made now hacky workarounds in KTextEditor, see
> https://bugs.kde.org/show_bug.cgi?id=390451
> Some still remain for factors like 1.1 and text selections...
> And one should think about if it is really a good idea to accept factors like 1.1
> and not round them to some at least 1 / 2^x factor that doesn't lead to
> interesting accumulating rounding errors. (in addition to the opt-out of
> fractional scaling at all)
> Greetings
> Christoph
> --
> Ignorance is bliss...
> https://cullmann.io | https://kate-editor.org
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