MultipointTouchArea inside target

? Offline

Hi everyone,

can i use MultipointtouchArea inside a target like a PinchArea ? When i used the code below on a touch screen on win8 there is no problem. But on linux board with TUIO interface like QTuio i have some troubles.

I use a delta because the target "rect" and "rect2" move so the toucharea moves too.

Is the design good or not ? Why this code works on windows and not under linux ?

Thanks all to give me some answers.

My code :

@Rectangle {
id: rect
width: 30; height: 30
color: "yellow"

    MultiPointTouchArea {
        anchors.fill: rect

        onTouchUpdated: {
            var pt = touchPoints[0];

            if (pt === undefined){
                return
            }

            var delta = Qt.vector2d(pt.x - pt.previousX, pt.y - pt.previousY);
            rect.x += delta.x
            rect.y += delta.y
        }
    }
}

Rectangle {
    id: rect2
    width: 30; height: 30
    color: "green"

    x: 300

    MultiPointTouchArea {
        anchors.fill: rect2

        onTouchUpdated: {
            var pt = touchPoints[0];

            if (pt === undefined){
                return
            }

            var delta = Qt.vector2d(pt.x - pt.previousX, pt.y - pt.previousY);
            rect2.x += delta.x
            rect2.y += delta.y

        }
    }
}@

jeremy_k

If the goal is to make rect1 and rect2 draggable following a single touch point, MouseArea's drag.target property facilitates that without the javascript handler.

Maybe someone can help with the Linux issues if you describe what is happening.

? Offline

The goal is a multi-user application, the MouseArea is not designed for two simultaneous touch.

Is the MultiPointTouchArea can be used as this or not ? Because this method move the area and the rect at the same time. ( and should move all touchpoints but it not works )

Before post bug reports for linux i have to be sure of my problem is not a design problem.

tks jeremy