@kaixoo said in DragHandler::onDragChanged not reporting continously:

I'm also looking to register when the user clicks the middle mouse button + drags their mouse. DragHandler only registers events from the left click

Set your acceptedButtons: https://doc.qt.io/qt-6/qml-qtquick-draghandler.html#acceptedButtons-prop

I see now that handlerPoint has no signals though, how am I supposed to signal when the position has changed?

handlerPoint is a value type, like date or string. The string doesn't emit a signal either when a character gets modified. Rather, the whole value gets updated.

Putting these together:

DragHandler {
    acceptedButtons: Qt.MiddleButton
    onCentroidChanged: {
        if (active)
            console.log("Centroid moved to", centroid.position)
    }
}

Set your acceptedButtons: https://doc.qt.io/qt-6/qml-qtquick-draghandler.html#acceptedButtons-prop

So, with this, should I have a different DragHandler for every possible button I want to accept, and emit different signals? That seems like spaghetti code. Is there a way to pass which button is being pressed while the drag is happening?

Something along the lines of:

DragHandler {
   onDragChanged: { parentWidget.onDragChangedCallback(event, buttonPressed) }
}

Where buttonPressed may be the Right Mouse Button, the Left Mouse Button, or Middle Mouse Button.

Now I'm also using onCentroidChanged and passing centroid.position. However, that only provides 1 position (the current position). Do I need to manually register the initial position? Or is there a way, like in onDragChanged, where I can pull the initial and last positions? It seems like onDragChanged is only being called when the drag is finished.

@kaixoo said in DragHandler::onDragChanged not reporting continously:

I'm also looking to register when the user clicks the middle mouse button + drags their mouse. DragHandler only registers events from the left click

Set your acceptedButtons: https://doc.qt.io/qt-6/qml-qtquick-draghandler.html#acceptedButtons-prop

I see now that handlerPoint has no signals though, how am I supposed to signal when the position has changed?

handlerPoint is a value type, like date or string. The string doesn't emit a signal either when a character gets modified. Rather, the whole value gets updated.

Putting these together:

DragHandler {
    acceptedButtons: Qt.MiddleButton
    onCentroidChanged: {
        if (active)
            console.log("Centroid moved to", centroid.position)
    }
}

More generally, I'm also looking to register when the user clicks the middle mouse button + drags their mouse. DragHandler only registers events from the left click, is there a way I can generalize all this? Perhaps tracking the mouse position + the clicks separately? (HoverHandler + WheelHandler + Keys.onPressed?)

Where is centroid documented btw? It's only mentioned 3 times in DragHandler's doc page and only with some code examples, without showing a reference for the full type.

The full type is https://doc.qt.io/qt-6/qml-qtquick-handlerpoint.html

centroid is inherited from MultiPointHandler: https://doc.qt.io/qt-6/qml-qtquick-multipointhandler.html#centroid-prop

To navigate there from the DragHandler doc page, click on "List of all members, including inherited members" which goes to see https://doc.qt.io/qt-6/qml-qtquick-draghandler-members.html