[Octave-bug-tracker] [bug #48778] Growing plot window in Qt toolkit and Qt5

[Dan Sebald]

URL:
  <http://savannah.gnu.org/bugs/?48778>

                 Summary: Growing plot window in Qt toolkit and Qt5
                 Project: GNU Octave
            Submitted by: sebald
            Submitted on: Sun 14 Aug 2016 07:03:08 AM GMT
                Category: Plotting with OpenGL
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Performance
                  Status: None
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: dev
        Operating System: GNU/Linux

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Details:

Using Qt5, the Qt graphics toolkit exhibits more, or makes more likely,
problems when plotting.

>From a fresh launch, when I run in the GUI


graphics_toolkit ('qt')
demo isosurface


about 20% of the time I get a grey window, an example of which is attached.

Also, the pager seems stuck every time no matter if the plot window looks
correct.  Although the output to the terminal window stops, typing <return>
will bring the next demo, etc.  After the demo, I can type "exit" and the GUI
shuts down appropriately.

Another observation is that the third demo in isosurface with the four
subplots continues to replot expanding by about five pixels each time.  After
twenty seconds the plot window has expanded past the screen.  The only way to
stop the re-plotting is to close the figure window.

>From a fresh launch, when I run in the GUI


graphics_toolkit ('qt')
figure
demo isosurface


the pager does not get stuck and I haven't seen the first demo plot be grey
yet.  However, the third demo still does the replotting and expansion.




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File Attachments:


-------------------------------------------------------
Date: Sun 14 Aug 2016 07:03:08 AM GMT  Name: Screenshot from 2016-08-14
01:52:42.png  Size: 11kB   By: sebald

<http://savannah.gnu.org/bugs/download.php?file_id=38205>

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