QGIS » QGIS Application

The bug is still present in current master, and affects all file open dialogs (ie raster, vector, csv..) so im leaning towards a bug in qgsfilewidget.cpp... maybe ?

This only happens with the Gtk(/fusion?) style, if i force-set the windows style in qt5 config the file open dialog works fine.

Well, i'm the one packaging qgis on my OS... will have to recheck with upcoming qt 5.9.5.

Tried the same workflow with the qgis-nightly ubuntu artful repo binaries w/ qt 5.9.1 and of course no issue.

In fact it seems any instance of QgsFileWidget triggers this - 'save project' dialog too. So that's not driver-specific nor only file-opening specific.

Hmm.. i'm looking at what could be specific to BSDs (Asked loic bartoletti from FreeBSD if he was also seeing that bug) and stumbled upon some areas within #if defined(Q_OS_MAC) || defined(Q_OS_LINUX) and one of them is in a file-dialog related.. so maybe some untested/less-tested codepath is taken on BSDs. I'll dig a bit further in this direction.

I think i'm on something here : https://github.com/qgis/QGIS/blob/master/src/gui/qgsguiutils.cpp#L130

The #else codepath is taken on BSDs, and this one untested - build was broken with qt5 until loic bartoletti fixed it in 71b9c77b907ab3912cea15abc2fde1e11c36689d

Is there an actual reason to not use native dialogs on BSDs too, as we're also using qt5 ?

I'm doing a build with BSDs added to this #ifdef and will report back.

Meh. Not this one, wrong track. That code seems to be in the 'save as image' dialog codepath.

After a bit more code digging and printf-debugging, it seems any call to a method of QFileDialog opening a dialog (ie getSaveFileName, getOpenFileName, etc) will trigger the lock. I'm really puzzled.

The first gtk error message is coming from https://github.com/GNOME/gtk/blob/master/gtk/gtkwidget.c#L13085 - so something with Gtk libs not properly initialized ?

Hi,

Here my tests.

With FreeBSD and Debian (ssh -Y into a VM...) I've only these warnings:

Warning: libpng warning: iCCP: known incorrect sRGB profile
Warning: libpng warning: iCCP: known incorrect sRGB profile
Warning: QFileInfo::absolutePath: Constructed with empty filename

Also, I added *BSD in https://github.com/qgis/QGIS/blob/master/src/gui/qgsguiutils.cpp#L130

My branch to test

Hi Landry,

Trying with OpenBSD current, I reproduce the problem with XFCE but no with default wm or Lumina for example.

Trying also with a minimal FreeBSD 11, QGIS master and XFCE I cannot reproduce the problem.

Thanks loic for the testing - fwiw i'm using xfce 4.13 (not released yet) - will have to check on a stock Xfce. Which version of QT5/Gtk+3 are you using in your FreeBSD testing ?

Hi Landry,

Today Qt 5.11, GTK 3.22.30 and XFCE 4.12.

I've never been able to reproduce this bug on FreeBSD. Do you still have this problem with new versions on OpenBSD (I couldn't test it)?

Still reproducible w/ qt 5.9.6, qgis 3.2.3, gtk 3.22.30 & xfce 4.13.

to workaround this i use qt5ct which allows me to set the QT5 gtk theme to something different from the default gtk3 thing (ie for example cleanlooks) and that helps, the file dialogs dont break qgis. It's a bit annoying of course...