Show location history

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// [WriteFile Name=ShowLocationHistory, Category=Maps]
// [Legal]
// Copyright 2020 Esri.

// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0

// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// [Legal]

import QtQuick
import QtQuick.Controls
import Esri.ArcGISRuntime

Rectangle {
    id: rootRectangle
    clip: true
    width: 800
    height: 600

    readonly property int initialZoomScale: 8000
    property bool trackingEnabled: false
    property Point lastPosition: null

    // add a mapView component
    MapView {
        anchors.fill: parent

        Map {
            Basemap {
                initStyle: Enums.BasemapStyleArcGISDarkGray
            }
        }

        // set initial viewpoint near UCLA, Los Angeles
        ViewpointCenter {
            Point {
                x: -13185535.98
                y: 4037766.28
            }
            targetScale: initialZoomScale
        }

        Button {
            id: button
            text: trackingEnabled ? "Stop tracking" : "Start tracking"
            anchors.horizontalCenter: parent.horizontalCenter
            width: 200
            onClicked: trackingEnabled =! trackingEnabled
        }

        SimulationParameters {
            id: simulationParameters
            velocity: 30
        }

        locationDisplay {
            dataSource: SimulatedLocationDataSource {
                id: simulatedLocationDataSource
                Component.onCompleted: {
                    setLocationsWithPolylineAndParameters(polyline, simulationParameters);
                    simulatedLocationDataSource.start();
                }
            }
            initialZoomScale: initialZoomScale
        }

        // if tracking is enabled then show location history
        locationDisplay.onLocationChanged: {
            if (!trackingEnabled)
                return;

            // clear old route
            locationHistoryLineOverlay.graphics.clear();

            if (lastPosition !== null) {
                polylineBuilder.addPoint(lastPosition);
                locationHistoryOverlay.graphics.append(ArcGISRuntimeEnvironment.createObject("Graphic", {geometry: lastPosition}));
            }

            // update last position
            lastPosition = locationDisplay.location.position;

            // update the polyline
            locationHistoryLineOverlay.graphics.append(ArcGISRuntimeEnvironment.createObject("Graphic", {geometry: polylineBuilder.geometry}));
        }

        Component.onCompleted: {
            // Set the focus on MapView to initially enable keyboard navigation
            forceActiveFocus();

            locationDisplay.autoPanMode = Enums.LocationDisplayAutoPanModeRecenter;
        }

        Polyline {
            id: polyline
            json: {"paths":[[[-13185646.046666779,4037971.5966668758],[-13185586.780000051,4037827.6633333955],
                             [-13185514.813333312,4037709.1299999417],[-13185569.846666701,4037522.8633330846],
                             [-13185591.01333339,4037378.9299996048],[-13185629.113333428,4037283.6799995075],
                             [-13185770.93000024,4037425.4966663187],[-13185821.730000293,4037546.146666442],
                             [-13185880.996667018,4037704.8966666036],[-13185948.730000421,4037874.2300001099],
                             [-13185974.130000448,4037946.1966668498],[-13186120.180000596,4037958.896666863],
                             [-13186264.113334076,4037984.296666889],[-13186336.080000836,4038001.2300002342],
                             [-13186314.91333415,4037757.8133333195],[-13186272.580000773,4037560.9633331187],
                             [-13186187.913334005,4037463.59666635],[-13186431.33000092,4037404.3299996229],
                             [-13186676.863334503,4037290.0299995062],[-13187625.130002158,4038589.6633341513],
                             [-13187333.030001862,4038756.8800009824],[-13187091.730001617,4038617.1800008402],
                             [-13186791.163334643,4038805.5633343654],[-13186721.313334571,4038801.3300010278],
                             [-13186833.49666802,4038195.9633337436],[-13186977.677439401,4037699.8176972247],
                             [-13186784.921301765,4037820.4541915278],[-13186749.517113185,4038150.8932846226],
                             [-13186649.860878762,4038288.5762400767],[-13186556.760975549,4038323.9804286221],
                             [-13186472.839936033,4038481.3323777127],[-13186373.183701571,4038489.1999751539],
                             [-13186344.335844241,4038242.6819215398],[-13186126.665647998,4038308.245233661],
                             [-13185814.584282301,4038358.0733508728],[-13185651.987268206,4038116.8003622484],
                             [-13185203.534213299,4038048.6145176427],[-13184576.748949422,4038150.8932845518],
                             [-13184251.55492135,4037833.5668537691],[-13184146.653621957,4037524.1080205571],
                             [-13183949.963685593,4037621.1417224966],[-13183687.71043711,4037781.1162040718],
                             [-13183480.530370807,4037875.5273735262],[-13182307.629999243,4037859.7460188437],
                             [-13181376.039484169,4037820.9297473822],[-13180716.162869323,4038364.3575478429],
                             [-13180182.439136729,4038810.7446696493],[-13178474.523192419,4040237.2426458625],
                             [-13178321.134040033,4039740.6894803117],[-13177958.020228144,4039140.1550991111],
                             [-13177073.512224896,4037459.5898928214],[-13177757.842101147,4037589.9384406791],
                             [-13178386.308314031,4037799.427178307],[-13180095.012208173,4037811.6550856642],
                             [-13180126.165447287,4036845.9046731163],[-13179806.844746364,4036324.0879179495],
                             [-13180928.361354485,4035887.9425703473],[-13181598.155995468,4035428.432293402],
                             [-13182984.47513606,4034447.105261297],[-13182229.264383668,4033222.8051626245],
                             [-13182058.735615831,4033339.8690072047],[-13181939.035180708,4033691.2477038498],
                             [-13182116.65518121,4033861.1450956347],[-13181792.305615077,4034085.1007484416],
                             [-13182027.845180977,4034467.3698799671],[-13181877.254310986,4034644.9898804692],
                             [-13181630.130832028,4034517.5668366305],[-13181386.868657427,4034424.8955320208],
                             [-13181228.555178719,4034652.7124891868],[-13181379.14604871,4034942.3103160923],
                             [-13181267.168222306,4035189.4337950516],[-13181074.103004368,4035015.6750989081],
                             [-13180807.673003616,4034934.5877073747],[-13180618.469090037,4034814.8872722536],
                             [-13180599.162568243,4035374.7764042714],[-13181047.073873857,4035494.476839392],
                             [-13181317.365178969,4035413.3894478586],[-13180765.198655669,4035143.0981427468],
                             [-13180328.871263131,4034892.1133594285],[-13180270.951697765,4035258.9372735149],
                             [-13180325.009958787,4035718.4324922049],[-13180707.279090302,4035695.2646660525],
                             [-13181413.897788007,4035536.9511873648],[-13181618.54691902,4035807.2424924765],
                             [-13181884.976919774,4036065.949884512],[-13182159.129529245,4035861.3007534989],
                             [-13182174.57474668,4035668.2355355616],[-13182417.83692128,4035664.374231203],
                             [-13182784.660835361,4035409.5281435261],[-13182997.032575091,4035255.0759691764],
                             [-13182618.624747934,4034679.7416197238]]],
                "spatialReference":{"latestWkid":3857,"wkid":102100}}
        }

        GraphicsOverlay {
            id: locationHistoryLineOverlay
            SimpleRenderer {
                SimpleLineSymbol {
                    color: "lime"
                    style: Enums.SimpleLineSymbolStyleSolid
                    width: 2
                }
            }
        }

        GraphicsOverlay {
            id: locationHistoryOverlay
            SimpleRenderer {
                SimpleMarkerSymbol {
                    color: "red"
                    style: Enums.SimpleMarkerSymbolStyleCircle
                    size: 3
                }
            }
        }
    }

    PolylineBuilder {
        id: polylineBuilder
        spatialReference: SpatialReference { wkid: 3857 }
    }
}