Combine multiple Objects to one

Beatsteak

Hey,

is it possible to combine multiple objects to one? I have 5 QFrame line objects. Now I want them to change color on hovering. As far as I know, the best way to do this is to edit the style sheet of an object with

#line::hover {
border: 5px solid black;
}

Now I want to change the color of all my lines if I hover one of them. So can I combine the line objects to one object and give them one style sheet so that all of them change their color if I hover one?

Thanks!

raven-worx

@Beatsteak said in Combine multiple Objects to one:

Now I want to change the color of all my lines if I hover one of them. So can I combine the line objects to one object and give them one style sheet so that all of them change their color if I hover one?

This should give you an idea:

#line[MyHoveredProperty="true"] {
border: 5px solid black;
}

void RepolishWidget( QWidget* widget )
{
        widget->style()->unpolish(widget );
        widget->style()->polish(widget );
        QEvent event(QEvent::StyleChange);
        QApplication::sendEvent(widget, &event);
        widget->update();
        widget->updateGeometry();
}
...
bool hovered;
foreach( QFrame* frame, frames )
{
     frame->setProperty("MyHoveredProperty", hovered);
     frame->style()->polish(frame); // in case the content margins (border-width, padding, margin) changes with your CSS you need to call RepolishWidget() instead, otherwise this is enough
}

Beatsteak

Thanks for your answer, this sounds like what I was looking for. But where do I have to put this code? The putter part seems to belong into the style sheet? And where do I put the rest of your code?

raven-worx

@Beatsteak said in Combine multiple Objects to one:

And where do I put the rest of your code?

depends on how your code looks like.

For example you can install an event filter on your frame widgets and listen for a QEvent::Enter / QEvent::Leave event types and set the property of all your frames.

Or you subclass QFrame and override the enterEvent() / leaveEvent() handlers there and emit a signal. Then in a connected slot set the properties of all frames.

Putting your frame widgets into a list (like in my example) lets you quickly traverse them with a minimum amount of code.