https://bugs.kde.org/show_bug.cgi?id=362856
--- Comment #13 from Yi Yang ---
Hi all,
I upgraded to Plasma 5.6 today. It seems to be handling hi-res screens in a new
way (by handling font DPI better it seems), so that the "scale display" option
is no longer needed in most common cases. Therefore,
https://bugs.kde.org/show_bug.cgi?id=362856
--- Comment #12 from Yi Yang ---
Relevant documentations:
relevant flags: http://doc.qt.io/qt-5/qt.html
QScreen and QPixmap with their new addition in Qt 5.5 or 5.6:
http://doc.qt.io/qt-5/qscreen.html
http://doc.qt.io/qt-5/qpixmap.html
--
You are rece
https://bugs.kde.org/show_bug.cgi?id=362856
--- Comment #11 from Yi Yang ---
By reading more documents and doing more experiments, things are now clear.
Qt 5.6 introduces a new option, called "High DPI Scaling", which is both
controllable form environment variables and application-wise options
(
https://bugs.kde.org/show_bug.cgi?id=362856
--- Comment #10 from Yi Yang ---
A wild guess: the environment variable QT_AUTO_SCREEN_SCALE_FACTOR or
QT_SCALE_FACTOR is used by Plasma 5 "scale display" functionality.
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https://bugs.kde.org/show_bug.cgi?id=362856
--- Comment #8 from Yi Yang ---
OK, I digged the source code a bit more.
The DPI calculation code at core/utils.cpp line 63-81 returned (93.6, 93.6),
while my actual DPI, as reported by Xorg.log, is (187, 189). Apparently
QScreen::physicalDotsPerInchX(
https://bugs.kde.org/show_bug.cgi?id=362856
--- Comment #7 from Yi Yang ---
OK. I tried KDE Plasma 4 + Kdelibs4/Okular. There were no render resolution
problem.
That said, there were no "scale display" option in systemsettings in this
setup. So this might indeed be the difference.
--
You are r
https://bugs.kde.org/show_bug.cgi?id=362856
--- Comment #6 from Yi Yang ---
Every application is, in principle, independent of the desktop environment I
use.
However, when I'm reporting a bug, I'm trying to include information about my
DE. I think this makes sense. In principle they are independ
https://bugs.kde.org/show_bug.cgi?id=362856
--- Comment #4 from Yi Yang ---
Luigi, yes, I am using the Frameworks version of Okular. To be sure this bug is
still around I even git pull'ed and compiled it again. So to be precise I'm
reporting the newest version of frameworks branch is still having
https://bugs.kde.org/show_bug.cgi?id=362856
--- Comment #3 from Yi Yang ---
To be honest, your terminology change from KDE 3 to KDE SC 4 to {Insert a
myriad names here} 5 is absolutely terrible. I have no idea how to even call
it.
And, yes, i checked and it is Plasma 5. I didn't know systemsetti
https://bugs.kde.org/show_bug.cgi?id=362856
Bug ID: 362856
Summary: [Frameworks] Wrong render resolution, possibly caused
by KDE 5 "Scale Display"
Product: okular
Version: unspecified
Platform: Other
OS: Lin
https://bugs.kde.org/show_bug.cgi?id=359223
Yi Yang changed:
What|Removed |Added
CC||ahyan...@gmail.com
--- Comment #3 from Yi Yang ---
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