webengine part

[Francis Herne]

On Fri, 06 Jan 2017 10:10:01 -0800 (PST)
René J.V. Bertin <rjvbertin at gmail.com> wrote:

I got this same crash with Konqueror 16.12 itself when trying to
open webpages.

The whole point of document-viewer KParts is that they should work in
any application and be interchangeable; this really seems like something
the WebEnginePart should handle.

> On Friday January 6 2017 18:42:22 Kevin Funk wrote:
> 
> >> among the internal options to open an SVG file. That's Konqueror's
> >> webengine KPart. Sure enough KDevelop crashed immediately when I
> >> tried to use it because of a shared OpenGL context issue that
> >> requires setting  
> 
> I didn't have the exact terminal message earlier: this is what I see
> (on Linux): Qt WebEngine seems to be initialized from a plugin.
> Please set Qt::AA_ShareOpenGLContexts using
> QCoreApplication::setAttribute before constructing QGuiApplication.
> QWidget(0x0) KDevelop::PartController(0x1b5bfc0, name =
> "PartController") QObject::connect: Cannot connect
> (null)::destroyed(QObject*) to
> WebEngineFactory::slotDestroyed(QObject*) WebEngineContext used
> before QtWebEngine::initialize() or OpenGL context creation failed.
> [0106/185838:ERROR:nss_util.cc(839)] After loading Root Certs,
> loaded==false: NSS error code: -8018
> QUrl("file:///home/bertin/work/src/Scratch/KDE/KF5/kvantum-git/Kvantum/themes/kvthemes/KvAmbiance/KvAmbiance.svg")
> Part ' "" ' has a widget  "webenginepart"  with a focus policy of
> NoFocus. It should have at least a ClickFocus policy, for part
> activation to work well. 
> 
> KCrash: Application 'kdevelop5' crashing...
> KCrash: Attempting to
> start /opt/local/lib/x86_64-linux-gnu/libexec/drkonqi from kdeinit
> sock_file=/run/user/505/kdeinit5__0
> 
> See also https://bugs.kde.org/show_bug.cgi?id=374258
> 
> >
> >... backtrace?  
> 
> https://paste.kde.org/plrkruven/sf518e
> Looks the same as the backtrace on BKO above.
> 
> >> QCoreApplication::setAttribute(Qt::AA_ShareOpenGLContexts);  
> >
> >Shouldn't be our job to set this, right?  
> 
> See the above message which AFAIK comes from QtWebEngine itself. The
> only alternative would be to set the attribute in a load handler of
> the KParts framework (hoping it will indeed always be loaded before
> creating a QGuiApplication). Or patch Qt to set it globally.
> 
> Cheers,
> R.