How to access dynamically created QMenu for tests purposes

KelvinSP

Hi, I have a QwtPlot object and I'm providing a way to save the graph as an image.

In the constructor, I'm defining this:

qwtPlot->setContextMenuPolicy(Qt::CustomContextMenu);
connect(qwtPlot, SIGNAL(customContextMenuRequested(QPoint)), this, SLOT(popUpMenu(QPoint)));

Then, I have created the popUpMenu function:

void MyClass::popUpMenu(QPoint pos)
{
    QMenu menu;
    QAction* actionSave = menu.addAction(QIcon(":/prefix/SaveImageIcon.png"), tr("Save Image"));
    connect(actionSave, SIGNAL(triggered()), this, SLOT(saveAsImage()));
    menu.popup(pos);
    menu.exec(QCursor::pos());
}

And the saveAsImage function:

void MyClass::saveAsImage()
{
    if( qwtPlot->itemList().isEmpty() )
    {
        return;
    }

    saveWidgetAsImage(qwtPlot);
}

Now, I'm developing another Qt application to test this one. It accesses the MainWindow and all its widgets to test the graphical user interface.

As I have access to the widgets I can emit the customContextMenuRequested signal as follows:

emit qwtPlot->customContextMenuRequested(QPoint(10,10));

It works and shows the QMenu, but now I want to access the QMenu to call the QAction responsible for saving the widget as an image. Is it possible? How can I do that?

mrjj

Hi
Im not sure I understand.

If you can call the
qwtPlot->customContextMenuRequested(QPoint(10,10));
wont it call void MyClass::popUpMenu(QPoint pos)
that will show menu and the action already there , ready to call void MyClass::saveAsImage() when clicked?

Also do you mean access to the local variable ?
void MyClass::popUpMenu(QPoint pos)
{
QMenu menu; <<< this QMenu ?

KelvinSP

@mrjj thanks.

Yes, the popUpMenu is being called, and the QMenu is also being shown. Now I need to find a way to trigger the QAction (actionSave) programmatically.

I think I found a workaround to do it. I will post it here.

KelvinSP

The Qt documentation says:

...a popup menu is always a top-level widget, if a parent is passed the popup menu will be deleted when that parent is destroyed...

So, I have added a parent for the QMenu and assigned an object name:

QMenu *menu = new QMenu(this);
menu->setObjectName("PopUpMenu");
QAction* actionSave = menu->addAction(QIcon(":/prefix/SaveAsImageIcon.png"), tr("Save as image"));
connect(actionSave, SIGNAL(triggered()), this, SLOT(saveAsImage()));
menu->popup(pos);
menu->exec(QCursor::pos());

Now, I can search for the QMenu widget and find the correct menu using the objectName. Finding the QMenu I can trigger the action:

QWidgetList allToplevelWidgets = QApplication::topLevelWidgets();
foreach(QWidget *w, allToplevelWidgets)
{
    if( w->inherits("QMenu") )
    {
        QMenu *menu = qobject_cast<QMenu *>(w);
        if( menu->objectName() == "PopUpMenu" )
        {
            menu->actions().at(0)->trigger();
            break;
        }
    }
}

mrjj

Hi
So the goal is to make it save image without user clicking the action?
Ahh, i missed the testing part. So its do module test.