Apply unique values with alternate symbols

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
// [WriteFile Name=ApplyUniqueValuesWithAlternateSymbols, Category=Layers]
// [Legal]
// Copyright 2022 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 QtQuick.Layouts
import Esri.ArcGISRuntime
import Esri.ArcGISExtras

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

    MapView {
        id: mapView
        anchors.fill: parent

        Component.onCompleted: {
            // Set and keep the focus on MapView to enable keyboard navigation
            forceActiveFocus();
        }
        Map {
            initBasemapStyle: Enums.BasemapStyleArcGISTopographic

            FeatureLayer {
                id: featureLayer

                ServiceFeatureTable {
                    id: featureTable
                    url: "https://sampleserver6.arcgisonline.com/arcgis/rest/services/SF311/FeatureServer/0"
                }
            }
            onLoadStatusChanged: {
                if (loadStatus === Enums.LoadStatusLoaded) {
                    mapView.setViewpoint(initialViewpoint);
                }
                // Create the class breaks renderer with alternate symbols and assign it to the feature layer renderer
                featureLayer.renderer = createUniqueValueRenderer();
            }
        }
    }
    ViewpointCenter {
        id: initialViewpoint
        center: Point {
            x: -13631205.660131
            y: 4546829.846004
        }
        targetScale: 25000
    }
    Rectangle {
        anchors {
            margins: 5
            left: parent.left
            top: parent.top
        }
        width: childrenRect.width
        height: childrenRect.height
        color: "#000000"
        opacity: .75
        radius: 5

        ColumnLayout {
            Text {
                color: "#ffffff"
                text: "Current scale: 1:" + Math.round(mapView.mapScale)
                Layout.fillWidth: true
                Layout.margins: 3
                font {
                    weight: Font.DemiBold
                    pointSize: 10
                }
            }
            Button {
                text: qsTr("Reset Viewpoint")
                font {
                    weight: Font.DemiBold
                    pointSize: 10
                }
                Layout.margins: 3
                Layout.fillWidth: true
                onClicked: mapView.setViewpointAndSeconds(initialViewpoint, 5);
            }
        }
    }
    function createUniqueValueRenderer() {
        // Create the default symbol
        const purpleDiamond = ArcGISRuntimeEnvironment.createObject("SimpleMarkerSymbol", {
                                                                        color: "purple",
                                                                        size: 15,
                                                                        style: Enums.SimpleMarkerSymbolStyleDiamond
                                                                    });
        const purpleDiamondMultilayer = purpleDiamond.toMultilayerSymbol();

        const redTriangle = ArcGISRuntimeEnvironment.createObject("SimpleMarkerSymbol", {
                                                                      color: "red",
                                                                      size: 30,
                                                                      style: Enums.SimpleMarkerSymbolStyleTriangle
                                                                  });
        const redTriangleMultilayer = redTriangle.toMultilayerSymbol();
        redTriangleMultilayer.referenceProperties = ArcGISRuntimeEnvironment.createObject("SymbolReferenceProperties", {minScale: 5000, maxScale: 0});

        const alternateSymbols = createAlternateSymbols();

        const uniqueValue = ArcGISRuntimeEnvironment.createObject("UniqueValue", {label: "unique value", description: "unique value with alternate symbols", values: ["Damaged Property"], symbol: redTriangleMultilayer});

        uniqueValue.alternateSymbols.append(alternateSymbols[0]);
        uniqueValue.alternateSymbols.append(alternateSymbols[1]);

        // Create the unique value renderer using the class break created above
        const uniqueValueRenderer = ArcGISRuntimeEnvironment.createObject("UniqueValueRenderer");
        uniqueValueRenderer.defaultSymbol = purpleDiamondMultilayer;
        uniqueValueRenderer.fieldNames = ["req_type"];

        uniqueValueRenderer.uniqueValues.append(uniqueValue);

        return uniqueValueRenderer;
    }

    function createAlternateSymbols() {
        // Alternate symbol 1
        const blueSquare = ArcGISRuntimeEnvironment.createObject("SimpleMarkerSymbol", {
                                                                     color: "blue",
                                                                     size: 45,
                                                                     style: Enums.SimpleMarkerSymbolStyleSquare
                                                                 });
        const blueSquareMultilayer = blueSquare.toMultilayerSymbol();
        blueSquareMultilayer.referenceProperties = ArcGISRuntimeEnvironment.createObject("SymbolReferenceProperties", {minScale: 10000, maxScale: 5000});

        // Alternate symbol 2
        const yellowDiamond = ArcGISRuntimeEnvironment.createObject("SimpleMarkerSymbol", {
                                                                        color: "yellow",
                                                                        size: 30,
                                                                        style: Enums.SimpleMarkerSymbolStyleDiamond
                                                                    });
        const yellowDiamondMultilayer = yellowDiamond.toMultilayerSymbol();
        yellowDiamondMultilayer.referenceProperties = ArcGISRuntimeEnvironment.createObject("SymbolReferenceProperties", {minScale: 20000, maxScale: 10000});

        return [blueSquareMultilayer, yellowDiamondMultilayer];

    }
}