GtkWarning: called set_fraction() with percentage not between 0.0 to 1.0 (minor)

[David Wagner]

I got the following GtkWarning message (in ~/.xsession-errors) when starting up Exaile:

...
INFO : Playing file:///home/daw/more/music/taverner/music/fools_game/reality_divine/mass_psychosis.mp3
shm_open() failed: Permission denied
INFO : Attempting to submit "Now Playing" information to AudioScrobbler...
INFO : Submitted "Now Playing" successfully to AudioScrobbler
/usr/local/lib/exaile/xlgui/main.py:143: GtkWarning: gtk_progress_set_percentage: assertion `percentage >= 0 && percentage <= 1.0' failed
  self.bar.set_fraction(self.player.get_progress())
INFO : Playing file:///home/daw/more/music/taverner/music/fools_game/reality_divine/when_the_beginning_meets_the_end.mp3
...

Looking at line 143 of xlgui/main.py, I see this:

main.py:143: self.bar.set_fraction(self.player.get_progress())

The implementation of get_progress() in ExailePlayer (xl/player/_base.py) suggests that get_progress can return -1:

    def get_progress(self):
        try:
            progress = self.get_position()/float(
                    self.current.get_tag_raw("__length")*gst.SECOND)
        except ZeroDivisionError: # track doesnt have duration info
            progress = 0
        except AttributeError: # no current track
            progress = 0
        except AttributeError:
            progress = -1
        return progress

It sounds like passing a negative number to set_fraction() triggers an error. Perhaps this code should be re-factored a bit to avoid passing negative numbers to set_fraction(). Perhaps there should be a conditional to avoid calling set_fraction() if the argument would fall outside the range 0.0 .. 1.0, or something.

I'm using bzr r2726, on Fedora 11 (x86_64). Here are some RPM version numbers, in case they're relevant:

gtk2-2.16.6-2.fc11.x86_64
gtk+-1.2.10-68.fc11.x86_64
gtk2-devel-2.16.6-2.fc11.x86_64
pygtk2-2.14.1-2.fc11.x86_64

I'm not sure if I know how to reproduce this bug reliably. I'd classify it as lower priority, since it didn't seem to cause any loss of function that I noticed.

[Mathias Brodala (mathbr)]

Fixed in trunk with r2727 and in 0.3.0.x with r2472.

[David Wagner (daw-bugzilla)]

For what it's worth, I just saw this again in the latest bzr head (r2803), so I'm not sure if it's fixed all the way. I got the following in my ~/.xsession-errors:

INFO : Playing file:///home/daw/music/8_foot_sativa/season_for_assault/season_for_assault.mp3
INFO : Attempting to submit "Now Playing" information to AudioScrobbler...
INFO : Submitted "Now Playing" successfully to AudioScrobbler
/usr/local/lib/exaile/xlgui/main.py:146: GtkWarning: gtk_progress_set_percentage: assertion `percentage >= 0 && percentage <= 1.0' failed
  self.bar.set_fraction(self.player.get_progress())

I still haven't figured out how to reproduce it, and I only saw it once.

[Johannes Sasongko (sjohannes)]

Feel free to reopen if anyone is still getting this in 0.3.1.