[Octave-bug-tracker] [bug #53475] Resizing the window does not trigger a plot redraw/resize

[anonymous]

URL:
  <http://savannah.gnu.org/bugs/?53475>

                 Summary: Resizing the window does not trigger a plot
redraw/resize
                 Project: GNU Octave
            Submitted by: None
            Submitted on: Mon 26 Mar 2018 01:00:18 PM UTC
                Category: Plotting
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: None
                  Status: None
             Assigned to: None
         Originator Name: MayeulC
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 4.2.1
        Operating System: GNU/Linux

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Details:

First of all, I would like to point out that I do not encounter this bug when
drag-resizing windows, but only when:
 * Snap-resizing it to one of the sides of my screen
 * using the maximize/restore buttons
 * double clicking the title bar

My desktop environment is KDE (on Arch Linux 32 at the moment), though I seem
to recall this happening in Unity and other DEs as well.

This has ben bugging me for quite some time, as this bug has been present on
every computer that I recall using with Octave with, for the past four years
or so, though this doesn't seem to be systematic.

When resizing a plot window trough one of the above actions, the plot inside
it occasionally doesn't update, and leaves the windows with its new size, and
correctly drawn, except for the contents of the plot, which keep the old
size.

As a workaround, the drag button can be selected, and the graph clicked once,
which seems to trigger a redraw. Losing the focus also seems to trigger a
redraw, and so does taking a screenshot, so this could be compositor-related
(kwin here, but definitely happen(ed?) with others), but makes it difficult to
take screenshots.

I don't know if this is related or not, but when selecting save as , and
saving as png with the window maximized, Octave generated a similar image,
with a small graph in one of the corners of the resulting image.

I was able to reproduce this with qt, but not fltk (though I thing it used to
happen with fltk as well in the past).




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