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/****************************************************************************
*
* (c) 2009-2020 QGROUNDCONTROL PROJECT <http://www.qgroundcontrol.org>
*
* QGroundControl is licensed according to the terms in the file
* COPYING.md in the root of the source code directory.
*
****************************************************************************/
import QtQuick 2.3
import QtQuick.Controls 1.2
import QtLocation 5.3
import QtPositioning 5.3
import QGroundControl 1.0
import QGroundControl.ScreenTools 1.0
import QGroundControl.Palette 1.0
import QGroundControl.Controls 1.0
import QGroundControl.FlightMap 1.0
MapQuickItem {
property color arrowColor: "white"
property var fromCoord: QtPositioning.coordinate()
property var toCoord: QtPositioning.coordinate()
property int arrowPosition: 1 ///< 1: first quarter, 2: halfway, 3: last quarter
property real _arrowHeading: 0
function _updateArrowDetails() {
if (fromCoord && fromCoord.isValid && toCoord && toCoord.isValid) {
_arrowHeading = fromCoord.azimuthTo(toCoord)
var lineDistanceQuarter = fromCoord.distanceTo(toCoord) / 4
coordinate = fromCoord.atDistanceAndAzimuth(lineDistanceQuarter * arrowPosition, _arrowHeading)
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} else {
coordinate = QtPositioning.coordinate()
_arrowHeading = 0
}
}
onFromCoordChanged: _updateArrowDetails()
onToCoordChanged: _updateArrowDetails()
sourceItem: Canvas {
x: -_arrowSize
y: 0
width: _arrowSize * 2
height: _arrowSize
onPaint: {
var ctx = getContext("2d");
ctx.lineWidth = 2
ctx.strokeStyle = arrowColor
ctx.beginPath();
ctx.moveTo(_arrowSize, 0);
ctx.lineTo(_arrowSize * 2, _arrowSize)
ctx.stroke();
ctx.beginPath();
ctx.moveTo(_arrowSize, 0);
ctx.lineTo(0, _arrowSize)
ctx.stroke();
}
transform: Rotation {
origin.x: width / 2
origin.y: 0
angle: _arrowHeading
}
}
}