qt-creator/share/qtcreator/qml/qmlpuppet/mockfiles/PlanarDraggable.qml

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**
** Copyright (C) 2019 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
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** This file is part of Qt Creator.
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** GNU General Public License Usage
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** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
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import QtQuick 2.0
import QtQuick3D 1.0
import MouseArea3D 1.0

Model {
    id: rootModel

    property View3D view3D
    property alias color: gizmoMaterial.emissiveColor
    property alias priority: mouseArea.priority
    property Node targetNode: null
    property bool dragging: false
    property bool active: false

    readonly property bool hovering: mouseArea.hovering

    property var _pointerPosPressed
    property var _targetStartPos

    signal pressed(var mouseArea)
    signal dragged(var mouseArea, vector3d sceneRelativeDistance)
    signal released(var mouseArea, vector3d sceneRelativeDistance)

    rotationOrder: Node.XYZr
    source: "#Rectangle"

    // Workaround for Material.DisableCulling bug QTBUG-79768: Show the back with another model
    Model {
        source: rootModel.source
        rotationOrder: rootModel.rotationOrder
        materials: gizmoMaterial
        rotation: Qt.vector3d(0, 180, 0)
    }

    DefaultMaterial {
        id: gizmoMaterial
        emissiveColor: "white"
        lighting: DefaultMaterial.NoLighting
    }
    materials: gizmoMaterial

    function handlePressed(mouseArea, scenePos)
    {
        if (!targetNode)
            return;

        _pointerPosPressed = mouseArea.mapPositionToScene(scenePos);
        var sp = targetNode.scenePosition;
        _targetStartPos = Qt.vector3d(sp.x, sp.y, sp.z);
        dragging = true;
        pressed(mouseArea);
    }

    function calcRelativeDistance(mouseArea, scenePos)
    {
        var scenePointerPos = mouseArea.mapPositionToScene(scenePos);
        return Qt.vector3d(scenePointerPos.x - _pointerPosPressed.x,
                           scenePointerPos.y - _pointerPosPressed.y,
                           scenePointerPos.z - _pointerPosPressed.z);
    }

    function handleDragged(mouseArea, scenePos)
    {
        if (!targetNode)
            return;

        dragged(mouseArea, calcRelativeDistance(mouseArea, scenePos));
    }

    function handleReleased(mouseArea, scenePos)
    {
        if (!targetNode)
            return;

        released(mouseArea, calcRelativeDistance(mouseArea, scenePos));
        dragging = false;
    }

    MouseArea3D {
        id: mouseArea
        view3D: rootModel.view3D
        x: -60
        y: -60
        width: 120
        height: 120
        grabsMouse: targetNode
        active: rootModel.active
        onPressed: rootModel.handlePressed(mouseArea, scenePos)
        onDragged: rootModel.handleDragged(mouseArea, scenePos)
        onReleased: rootModel.handleReleased(mouseArea, scenePos)
    }
}