debian tray doesn't close Qmenu properly

Paul Busovikov

There is odd behavior in debian when I close context menu by clicking on desktop but not with Esc key
I expect menu will open next time I click right button on tray, but it only hides notification area

I made logs to catch all possible mouse activities and disovered that this code in qsystemtrayicon_x11.cpp does not emit QSystemTrayIcon::Context in case when popup was hiden by clicking on desktop

void QSystemTrayIconSys::mousePressEvent(QMouseEvent *ev)
{
    QPoint globalPos = ev->globalPos();
#ifndef QT_NO_CONTEXTMENU
    if (ev->button() == Qt::RightButton && q->contextMenu())
        q->contextMenu()->popup(globalPos);
#else
    Q_UNUSED(globalPos)
#endif // QT_NO_CONTEXTMENU

    if (QBalloonTip::isBalloonVisible()) {
        emit q->messageClicked();
        QBalloonTip::hideBalloon();
    }

    if (ev->button() == Qt::LeftButton)
        emit q->activated(QSystemTrayIcon::Trigger);
    else if (ev->button() == Qt::RightButton)
        emit q->activated(QSystemTrayIcon::Context);
    else if (ev->button() == Qt::MidButton)
        emit q->activated(QSystemTrayIcon::MiddleClick);
}

there is no problem in any other desktop environments unless it is gnome shell ( in my case 3.14 ) with notification area

SGaist

Hi,

Which version of Debian is it ? Are you using the Qt version that comes with the distribution ?

kshegunov

(... continues from @SGaist's ...)
Which window manager and desktop environment?

Paul Busovikov

@SGaist debian 8 gnome shell 3.14
project is duilt on sandbox debian 7 with Qt 5.8

Paul Busovikov

Continuing investigation
I made watcher to check events from QSystemTrayIconSys and as I can see the Tray does not produce any when I click right button second time.
So it works half the time as I said early.
I have to note that it doesn't produce a bunch of events as it happens in other distros, only 3 at one click

QEvent::Type(MouseMove) 
QEvent::Type(MouseButtonPress) 
QEvent::Type(ContextMenu)

Next time I click tray none of them appear in my log
I checked how this code works on Mint ( or whatever except debian ) and there are a huge number of events whenever I click or just hover the area of tray icon

To get a pointer on QSystemTrayIconSys and set up filter on it

#include <QtWidgets/private/qsystemtrayicon_p.h>
class MyTray : public QSystemTrayIcon
{
     MyTray(){}
public:
     QSystemTrayIconPrivate* d() { return reinterpret_cast<QSystemTrayIconPrivate *>(qGetPtrHelper(d_ptr)); }
};

inline QSystemTrayIconPrivate* p_tray_ptr(QSystemTrayIcon* t)
{
     return static_cast<MyTray*>(t)->d();
}

QSystemTrayIconPrivate* trr = p_tray_ptr( trayIcon );
     if ( trr )
     {
          QSystemTrayIconSys * s = trr->sys;
          if ( s )
               reinterpret_cast<QWidget*>(s)->installEventFilter( this );
     }

and the filter itself

bool Window::eventFilter(QObject *watched, QEvent *event)
{
     if ( watched != reinterpret_cast<QWidget*>(p_tray_ptr( trayIcon )->sys) )
          return false;

     qDebug() << event->type();
     return false;
}

So the question is what blocks those operation above tray in debian.

SGaist

Are you using the same desktop environment with each distribution your tried ?

Paul Busovikov

@SGaist said in debian tray doesn't close Qmenu properly:

Are you using the same desktop environment with each distribution your tried ?

Nope. Mint - MATE; Astra - Fly DE; debian - gnome;

SGaist

Then it starts to get pretty hard to find whether it's a Gnome specific bug or a Debian + Gnome specific bug or a xcb backend problem.

Paul Busovikov

@SGaist also I checked it on debian 9 gnome 3.22.2 and there is same problem

Paul Busovikov

I have reported it to bugreprot.qt
https://bugreports.qt.io/browse/QTBUG-62329

SGaist

Thanks for the link