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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: Tue, 20 Feb 2018 09:33:07 -0500 (EST)
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Firefox/52.0

Follow-up Comment #100, bug #49053 (project octave):

@John: I am currently trying to implement -opengl, -painters and -RGBImage
print options and it will be useful to be able to control the resolution of
the opengl renderer. In this perspective, it would be handy (and simpler I
think) to add a "opengl_renderer::devicePixelRatio" attribute and set its
value with a public method "opengl_renderer::set_devicePixelRatio (double)"
before rendering. The advantage would be:
* devicePixelRatio is accessible from everywhere in the opengl_renderer class,
without having to get it multiple times from figure properties
* the print function can change/restore the value of __devicePixelRatio__
property in order to achieve whatever resolution is required

Do you think it would be possible? 


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