https://bugs.kde.org/show_bug.cgi?id=362856
Christoph Cullmann <cullm...@kde.org> changed:
What |Removed |Added
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CC| |cullm...@kde.org
--- Comment #21 from Christoph Cullmann <cullm...@kde.org> ---
I did take a look, IMHO the problem (beside the missing
// These attributes must be set before a Q(Gui)Application is constructed.
+ QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
+ QCoreApplication::setAttribute(Qt::AA_UseHighDpiPixmaps);
calls) is that the generators render the stuff in a QImage but that has not set
the right scale factor nor dimensions.
During writing our company PDF helper viewer
(https://github.com/AbsInt/FirstAid), I run into the same issue with libpoppler
and altered our rendering code to:
/**
* we render in too high resolution and then set the right ratio
*/
cachedPage = new QImage(page->renderToImage(resX() *
devicePixelRatio(), resY() * devicePixelRatio(), -1, -1, -1, -1,
Poppler::Page::Rotate0));
cachedPage->setDevicePixelRatio(devicePixelRatio());
This did the trick, unfortunately Okular is more complex than our toy program
therefore I am not that sure where to adjust that :/
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