[Xfce-bugs] [Bug 16860] New: Using non 1x1 scaling option for one display results in non accurate graphical representation of displays setup

[bugzilla-daemon at xfce.org]

https://bugzilla.xfce.org/show_bug.cgi?id=16860

            Bug ID: 16860
           Summary: Using non 1x1 scaling option for one display results
                    in non accurate graphical representation of displays
                    setup
    Classification: Xfce Core
           Product: Xfce4-settings
           Version: 4.14.3
          Hardware: PC (x86_64)
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: Medium
         Component: Display Settings
          Assignee: xfce-bugs at xfce.org
          Reporter: matiqing at gmail.com
  Target Milestone: Xfce 4.14

Created attachment 9869
  --> https://bugzilla.xfce.org/attachment.cgi?id=9869&action=edit
displays arrangement

It looks like the xfce4-settings display module doesn't handle scaling. 
When there is only one monitor setup - it's not that big of an issue, but
consider multiple display setup, lets say I have 2 monitors.
I setup with xrandr a 2x2 scale for one of the monitors. 
That scale setting is not reflected in the xfce4-settings display module - so
the graphical representation of thix 2x2 scaled display is 2 times too small -
it doesn't occupy as much space as it should. 

Look at the attached screenshot. 
The monitor that is at the very top, in reality is immediately on top of the
bottom one. So if I move the mouse cursor, there is no gap really - but
xfce4-settings display module makes it look like there is a gap.

when I try to align those monitors to be snapped together, one on top of
another - in reality they overlap. 

It took me awhile to figure out what's happening here, but finally it makes
sense.


If my explanation isn't really understandable, I apologise, please do tell me
and I will try to explain it better.

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