SimpleItemMapVisual.qml 3.2 KB
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/****************************************************************************
 *
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 * (c) 2009-2020 QGROUNDCONTROL PROJECT <http://www.qgroundcontrol.org>
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 *
 * QGroundControl is licensed according to the terms in the file
 * COPYING.md in the root of the source code directory.
 *
 ****************************************************************************/

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import QtQuick          2.3
import QtQuick.Controls 1.2
import QtLocation       5.3
import QtPositioning    5.3
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import QGroundControl               1.0
import QGroundControl.ScreenTools   1.0
import QGroundControl.Palette       1.0
import QGroundControl.Controls      1.0
import QGroundControl.FlightMap     1.0

/// Simple Mission Item visuals
Item {
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    id: _root
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    property var map        ///< Map control to place item in
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    property var vehicle    ///< Vehicle associated with this item
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    property bool interactive: true
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    property var    _missionItem:       object
    property var    _itemVisual
    property var    _dragArea
    property bool   _itemVisualShowing: false
    property bool   _dragAreaShowing:   false
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    signal clicked(int sequenceNumber)

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    function hideItemVisuals() {
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        if (_itemVisualShowing) {
            _itemVisual.destroy()
            _itemVisualShowing = false
        }
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    }

    function showItemVisuals() {
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        if (!_itemVisualShowing) {
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            _itemVisual = indicatorComponent.createObject(map)
            map.addMapItem(_itemVisual)
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            _itemVisualShowing = true
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        }
    }

    function hideDragArea() {
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        if (_dragAreaShowing) {
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            _dragArea.destroy()
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            _dragAreaShowing = false
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        }
    }

    function showDragArea() {
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        if (!_dragAreaShowing && _missionItem.specifiesCoordinate) {
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            _dragArea = dragAreaComponent.createObject(map)
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            _dragAreaShowing = true
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        }
    }

    Component.onCompleted: {
        showItemVisuals()
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        if (_missionItem.isCurrentItem && map.planView) {
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            showDragArea()
        }
    }

    Component.onDestruction: {
        hideDragArea()
        hideItemVisuals()
    }


    Connections {
        target: _missionItem

        onIsCurrentItemChanged: {
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            if (_missionItem.isCurrentItem && map.planView) {
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                showDragArea()
            } else {
                hideDragArea()
            }
        }
    }

    // Control which is used to drag items
    Component {
        id: dragAreaComponent

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        MissionItemIndicatorDrag {
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            mapControl:     _root.map
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            itemIndicator:  _itemVisual
            itemCoordinate: _missionItem.coordinate
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            visible:        _root.interactive
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            onItemCoordinateChanged: _missionItem.coordinate = itemCoordinate
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        }
    }

    Component {
        id: indicatorComponent

        MissionItemIndicator {
            coordinate:     _missionItem.coordinate
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            visible:        _missionItem.specifiesCoordinate
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            z:              QGroundControl.zOrderMapItems
            missionItem:    _missionItem
            sequenceNumber: _missionItem.sequenceNumber
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            onClicked:      if(_root.interactive)  _root.clicked(_missionItem.sequenceNumber)
            opacity:        _root.opacity
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        }
    }
}