Graphics overlay (dictionary renderer)

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
157
158
159
// [WriteFile Name=GODictionaryRenderer, Category=DisplayInformation]
// [Legal]
// Copyright 2016 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.XmlListModel
import Esri.ArcGISRuntime
import Esri.ArcGISExtras

Rectangle {
    width: 800
    height: 600

    readonly property url dataPath: {
        Qt.platform.os === "ios" ?
                    System.writableLocationUrl(System.StandardPathsDocumentsLocation) + "/ArcGIS/Runtime/Data" :
                    System.writableLocationUrl(System.StandardPathsHomeLocation) + "/ArcGIS/Runtime/Data"
    }
    property bool graphicsLoaded: false

    Map {
        id: map
        Basemap {
            initStyle: Enums.BasemapStyleArcGISTopographic
        }
    }

    // Create MapView that a GraphicsOverlay
    // for the military symbols.
    MapView {
        id: mapView
        anchors.fill: parent

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

        // The GraphicsOverlay does not have a valid extent until it has been added
        // to a MapView with a valid SpatialReference
        onSpatialReferenceChanged: {
            setViewpointGeometryAndPadding( graphicsOverlay.extent, 20 );
        }

        //! [Apply Dictionary Renderer Graphics Overlay QML]
        GraphicsOverlay {
            id: graphicsOverlay

            DictionaryRenderer {
                id: dictionaryRenderer
                dictionarySymbolStyle: Factory.DictionarySymbolStyle.createFromFile(dataPath + "/styles/arcade_style/mil2525d.stylx")

                Component.onCompleted: {
                    dictionarySymbolStyle.loadStatusChanged.connect(() => {
                                                                        if (dictionarySymbolStyle.loadStatus === Enums.LoadStatusLoaded) {
                                                                            const dictionarySymbolStyleConfigurations = dictionarySymbolStyle.configurations;
                                                                            for (let i = 0; i < dictionarySymbolStyleConfigurations.length; i++) {
                                                                                if (dictionarySymbolStyleConfigurations[i].name === "model") {
                                                                                    dictionarySymbolStyleConfigurations[i].value = "ORDERED ANCHOR POINTS";
                                                                                }
                                                                            }
                                                                        }
                                                                    });
                }
            }
        }
        //! [Apply Dictionary Renderer Graphics Overlay QML]
    }

    ProgressBar {
        id: progressBar_loading
        anchors {
            horizontalCenter: parent.horizontalCenter
            bottom: parent.bottom
            margins: 5
        }
        indeterminate: true
        visible: !graphicsLoaded
    }

    // Use XmlListModel to parse the XML messages file.
    XmlListModel {
        id: xmlParser
        source: dataPath + "/xml/arcade_style/Mil2525DMessages.xml"
        query: "/messages/message"

        // These are the fields we need for MIL-STD-2525D symbology.
        XmlRole { name: "_control_points"; query: "_control_points/string()" }
        XmlRole { name: "_wkid"; query: "_wkid/number()" }
        XmlRole { name: "identity"; query: "identity/number()" }
        XmlRole { name: "symbolset"; query: "symbolset/number()" }
        XmlRole { name: "symbolentity"; query: "symbolentity/number()" }
        XmlRole { name: "echelon"; query: "echelon/number()" }
        XmlRole { name: "specialentitysubtype"; query: "specialentitysubtype/number()" }
        XmlRole { name: "indicator"; query: "indicator/number()" }
        XmlRole { name: "modifier2"; query: "modifier2/number()" }
        XmlRole { name: "uniquedesignation"; query: "uniquedesignation/string()" }
        XmlRole { name: "additionalinformation"; query: "additionalinformation/string()" }

        onStatusChanged: {
            if (status === XmlListModel.Ready) {
                for (let i = 0; i < count; i++) {
                    const element = get(i);
                    let wkid = element._wkid;
                    if (!wkid) {
                        // If _wkid was absent, use WGS 1984 (4326) by default.
                        wkid = 4326;
                    }
                    const pointStrings = element._control_points.split(";");
                    const sr = ArcGISRuntimeEnvironment.createObject("SpatialReference", { wkid: wkid });
                    let geom;
                    if (pointStrings.length === 1) {
                        // It's a point
                        const pointBuilder = ArcGISRuntimeEnvironment.createObject("PointBuilder");
                        pointBuilder.spatialReference = sr;
                        const coords = pointStrings[0].split(",");
                        pointBuilder.setXY(coords[0], coords[1]);
                        geom = pointBuilder.geometry;
                    } else {
                        const builder = ArcGISRuntimeEnvironment.createObject("MultipointBuilder");
                        builder.spatialReference = sr;

                        for (let ptIndex = 0; ptIndex < pointStrings.length; ptIndex++) {
                            const coords = pointStrings[ptIndex].split(",");
                            builder.points.addPointXY(coords[0], coords[1]);
                        }
                        geom = builder.geometry;
                    }
                    if (geom) {
                        // Get rid of _control_points and _wkid. They are not needed in the graphic's
                        // attributes.
                        element._control_points = undefined;
                        element._wkid = undefined;

                        const graphic = ArcGISRuntimeEnvironment.createObject("Graphic", { geometry: geom });
                        graphic.attributes.attributesJson = element;
                        graphicsOverlay.graphics.append(graphic);
                    }
                }

                graphicsLoaded = true;
                mapView.map = map;
            }
        }
    }
}