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[Octave-bug-tracker] [bug #49053] figure scaling issue with Qt 5 on macO


From: Pantxo Diribarne
Subject: [Octave-bug-tracker] [bug #49053] figure scaling issue with Qt 5 on macOS with Retina / HiDPI scaling
Date: Mon, 17 Sep 2018 14:50:55 -0400 (EDT)
User-agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0

Follow-up Comment #156, bug #49053 (project octave):

@Mike: Yes, John's latest changes provided a way to detect when a window is
moved from one screen to another and adapt the rendering accordingly. 
Anyway, prior to Qt5 there was no "devicePixelRatio" method in QScreen [1] and
the Qt5 behavior of using "logical" pixels versus "physical" pixels was not
completely in place, so I don't know if porting this to Qt4 necessary or even
feasible (no issue reported against Qt4 builds).


[1] https://doc.qt.io/archives/qt-4.8/qscreen.html#width

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