[Octave-bug-tracker] [bug #44719] fltk: figure not always updated by mouse-zoom

[anonymous]

URL:
  <http://savannah.gnu.org/bugs/?44719>

                 Summary: fltk: figure not always updated by mouse-zoom
                 Project: GNU Octave
            Submitted by: None
            Submitted on: Sa 04 Apr 2015 12:55:08 UTC
                Category: Plotting
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Inaccurate Result
                  Status: None
             Assigned to: None
         Originator Name: jspecht
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 4.0.0-rc2
        Operating System: GNU/Linux

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Details:

octave --no-gui
>> graphics_toolkit('fltk')
>> x=linspace(0,2*pi,100);
>> a=figure(); plot(x,sin(x)); b=figure(); plot(x,cos(x));
>> linkaxes([get([a,b],'currentaxes'){:}],'x');

After zooming a single plot (right mouse button) and then auto-scaling
(double-click left mouse button) the plot window is not updated (i.e. stays
zoomed).
By resizing the figure the missing update can be enforced.

This also happens when zooming linked axes (linkaxes()) of different figures
where it is rather annoying.

Origin is a missing Fdrawnow() in the idle-hook __fltk_check__().
See here the also attached patch:
~/src/octave$ hg diff
diff -r cf9b94a89620 libinterp/dldfcn/__init_fltk__.cc
--- a/libinterp/dldfcn/__init_fltk__.cc Thu Apr 02 15:36:38 2015 -0700
+++ b/libinterp/dldfcn/__init_fltk__.cc Sat Apr 04 14:49:34 2015 +0200
@@ -2274,6 +2274,9 @@
 {
 #ifdef HAVE_FLTK
   Fl::check ();
+
+  if (Vdrawnow_requested)
+    Fdrawnow ();
 #else
   error ("__fltk_check__: not available without OpenGL and FLTK libraries");
 #endif




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File Attachments:


-------------------------------------------------------
Date: Sa 04 Apr 2015 12:55:08 UTC  Name: fltk-drawnow.patch  Size: 397B   By:
None

<http://savannah.gnu.org/bugs/download.php?file_id=33532>

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  <http://savannah.gnu.org/bugs/?44719>

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