DisplayCAL

14 comments on “Problem profiling a second monitor”

1. What are the coordinates of the respective screens shown in DisplayCAL?

2. Hi  FLorian,

   Monitor 1, Output XWAYLAND0@ 0, 0, 1920×1280

   Monitor 2, Output XWAYLAND1@ 1920, 0, 1920×1280

   BTW, I managed to profile it… disabling the other one in the window manager.

   J-L

3. Which version of wxPython are you using, and is it a GTK2 or GTK3 build?

   If you run the following python2 code, drag the window to the 2nd screen and close it, does the output match the 2nd screen’s coordinates?

   #!/usr/bin/env python2
   # -*- coding: utf-8 -*-
   
   from __future__ import print_function
   import wx
   
   app = wx.App(0)
   
   frame = wx.Frame(None)
   
   def on_close(event):
       display_index = wx.Display.GetFromWindow(frame)
       print("Window closed on wx.Display(%i) @ %i, %i, %ix%i" %
             ((display_index, ) + tuple(wx.Display(display_index).Geometry)))
       event.Skip()
   
   frame.Bind(wx.EVT_CLOSE, on_close)
   frame.Show()
   
   print("No. of displays:", wx.Display.GetCount())
   
   app.MainLoop()

4. Hi Florian,

   1 – wxPython:

   From Debian, python-wxgtk3.0  version 3.0.2.0

   So it is grk3 I suppose.

   2 – Your code

   No. of displays: 2
   Window closed on wx.Display(0) @ 0, 0, 1920×1080

   Which seems to be wrong (If I close it on any of the displays, I get always the same

   Regards

   Jean-Luc

    

5. Probably a Wayland-related issue. Try updating to wxPython 4 (Phoenix), see https://wxpython.org/pages/downloads/

6. Overriding wx.Display.GetFromWindow:

   #!/usr/bin/env python2
   # -*- coding: utf-8 -*-
   
   from __future__ import print_function
   import wx
   
   @staticmethod
   def get_display_from_window(w):
       for i in xrange(wx.Display.GetCount()):
           if wx.Display(i).Geometry.Contains(w.Position):
               return i
       return wx.NOT_FOUND
   
   wx.Display.GetFromWindow = get_display_from_window
   
   app = wx.App(0)
   
   frame = wx.Frame(None)
   
   def on_close(event):
       display_index = wx.Display.GetFromWindow(frame)
       print("Window closed on wx.Display(%i) @ %i, %i, %ix%i" %
             ((display_index, ) + tuple(wx.Display(display_index).Geometry)))
       print("Position of closed window:", frame.Position)
       display_index = wx.Display.GetFromPoint(frame.Position)
       print("Position lies on wx.Display(%i) @ %i, %i, %ix%i" %
             ((display_index, ) + tuple(wx.Display(display_index).Geometry)))
       event.Skip()
   
   frame.Bind(wx.EVT_CLOSE, on_close)
   frame.Show()
   
   print("No. of displays:", wx.Display.GetCount())
   
   app.MainLoop()

7. Florian,

   I will not update wx. They use pip to install it and then I’ve the system all in a mess: the new file is locally installed but other applications will try to use them. I’ve a very bad experience with it.

   I will have a look if I can build a package for version 4, but probably I will have lots of unmet  dependencies or packages depending on version 3.

   Is the code “Overriding wx.Display.GetFromWindow” supposed to work with version 3 or 4.

   Regards

   J-L

8. I will not update wx. They use pip to install it and then I’ve the system all in a mess:

   pip allows installs to ~/.local/lib afaik. Otherwise, there’s always virtualenv.

   Is the code “Overriding wx.Display.GetFromWindow” supposed to work with version 3 or 4.

   Both. If it’s returning the correct display is the question.

9. This is what I get with debian version of wx:

   No. of displays: 2
   Window closed on wx.Display(0) @ 0, 0, 1920×1080
   Position of closed window: (52, 39)
   Position lies on wx.Display(0) @ 0, 0, 1920×1080

10. What’s the position if you drag it to the other screen and close it there?

11. This is what I did

    launch the code > move the window > close the window (with the top bar button)

    J-L

12. So, result is the same on both screees? Not even the position is different?

13. Everything is identical, even the position…

14. Ok, thanks. Will close as “cantfix”.

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