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
160
161
162
// [WriteFile Name=CreateSymbolStylesFromWebStyles, Category=DisplayInformation]
// [Legal]
// Copyright 2021 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]
#ifdef PCH_BUILD
#include "pch.hpp"
#endif // PCH_BUILD
#include "CreateSymbolStylesFromWebStyles.h"
#include "FeatureLayer.h"
#include "Map.h"
#include "MapQuickView.h"
#include "ServiceFeatureTable.h"
#include "SymbolStyle.h"
#include "SymbolStyleSearchResultSymbolFetcher.h"
#include "UniqueValueRenderer.h"
#include "MapTypes.h"
#include "LayerListModel.h"
#include "SymbolStyleSearchParameters.h"
#include "SymbolStyleSearchResultListModel.h"
#include "SymbolStyleSearchResult.h"
#include "TaskWatcher.h"
#include "UniqueValue.h"
#include "UniqueValueListModel.h"
#include "SpatialReference.h"
#include "Point.h"
#include "Symbol.h"
#include <QUuid>
using namespace Esri::ArcGISRuntime;
CreateSymbolStylesFromWebStyles::CreateSymbolStylesFromWebStyles(QObject* parent /* = nullptr */):
QObject(parent),
m_map(new Map(BasemapStyle::ArcGISNavigation, this))
{
const QUrl webStyleLayerUrl = QUrl("https://services.arcgis.com/V6ZHFr6zdgNZuVG0/arcgis/rest/services/LA_County_Points_of_Interest/FeatureServer/0");
m_webStyleLayer = new FeatureLayer(new ServiceFeatureTable(webStyleLayerUrl, this), this);
m_uniqueValueRenderer = new UniqueValueRenderer(this);
// The UniqueValueRenderer will affect specific features based on the values of the specified FieldName(s)
m_uniqueValueRenderer->setFieldNames({"cat2"});
// The UniqueValueRenderer defines how features of a FeatureLayer are stylized
// Without an overriding UniqueValueRenderer, features from m_webStyleLayer will use the web layer's default gray circle style
m_webStyleLayer->setRenderer(m_uniqueValueRenderer);
m_map->operationalLayers()->append(m_webStyleLayer);
// Set the scale at which feature symbols and text will appear at their default size
m_map->setReferenceScale(100'000);
createSymbolStyles();
}
void CreateSymbolStylesFromWebStyles::createSymbolStyles()
{
QMap<QString,QStringList> categoriesMap = createCategoriesMap();
SymbolStyle* symbolStyle = new SymbolStyle("Esri2DPointSymbolsStyle", {}, this);
SymbolStyleSearchParameters searchParams;
searchParams.setKeysStrictlyMatch(true);
connect(symbolStyle, &SymbolStyle::searchSymbolsCompleted, this, [this, symbolStyle, categoriesMap](const QUuid& /* taskId */, SymbolStyleSearchResultListModel* searchResults)
{
m_legendInfoListModel = searchResults;
emit legendInfoListModelChanged();
const auto results = searchResults->searchResults();
for (const SymbolStyleSearchResult& symbolStyleSearchResult : results)
{
const QString symbolLabel = symbolStyleSearchResult.key();
// We pass symbolStyle as the QObject parent for fetchSymbol() because we don't need access to the resulting class outside the lifetime of this SymbolStyle
SymbolStyleSearchResultSymbolFetcher* symbolFetcher = symbolStyleSearchResult.fetchSymbol(symbolStyle);
connect(symbolFetcher, &SymbolStyleSearchResultSymbolFetcher::fetchSymbolCompleted, this, [this, symbolLabel, categoriesMap](const QUuid& /* taskId */, Symbol* symbol)
{
// If multiple field names are set, we can pass multiple values from each field,
// However, even though we are using the same symbol, we must create a UniqueValue for each value from the same field
// When the FeatureLayer is rendered, all features with a matching value in the specified FieldNames will appear with the defined UniqueValue
for (const QString &category : categoriesMap[symbolLabel])
{
m_uniqueValueRenderer->uniqueValues()->append(new UniqueValue(symbolLabel, "", {category}, symbol, this));
}
});
}
});
searchParams.setKeys(categoriesMap.keys());
symbolStyle->searchSymbols(searchParams);
}
CreateSymbolStylesFromWebStyles::~CreateSymbolStylesFromWebStyles() = default;
void CreateSymbolStylesFromWebStyles::init()
{
// Register the map view for QML
qmlRegisterType<MapQuickView>("Esri.Samples", 1, 0, "MapView");
qmlRegisterType<CreateSymbolStylesFromWebStyles>("Esri.Samples", 1, 0, "CreateSymbolStylesFromWebStylesSample");
qmlRegisterUncreatableType<QAbstractListModel>("Esri.Samples", 1, 0, "AbstractListModel", "AbstractListModel is uncreateable");
}
MapQuickView* CreateSymbolStylesFromWebStyles::mapView() const
{
return m_mapView;
}
void CreateSymbolStylesFromWebStyles::setMapView(MapQuickView* mapView)
{
if (!mapView || mapView == m_mapView)
return;
m_mapView = mapView;
m_mapView->setMap(m_map);
constexpr double x_longitude = -118.44186;
constexpr double y_latitude = 34.28301;
constexpr double scale = 7000;
const Point centerPt(x_longitude, y_latitude, SpatialReference::wgs84());
m_mapView->setViewpointCenter(centerPt, scale);
connect(m_mapView, &MapQuickView::mapScaleChanged, this, [this]()
{
// Set scale symbols to true when we zoom in so the symbols don't take up the entire view
m_webStyleLayer->setScaleSymbols(m_mapView->mapScale() >= 80'000);
});
emit mapViewChanged();
}
QMap<QString,QStringList> CreateSymbolStylesFromWebStyles::createCategoriesMap()
{
QMap<QString,QStringList> categories;
categories["atm"] << "Banking and Finance";
categories["beach"] << "Beaches and Marinas";
categories["campground"] << "Campgrounds";
categories["city-hall"] << "City Halls" << "Government Offices";
categories["hospital"] << "Hospitals and Medical Centers" << "Health Screening and Testing" << "Health Centers" << "Mental Health Centers";
categories["library"] << "Libraries";
categories["park"] << "Parks and Gardens";
categories["place-of-worship"] << "Churches";
categories["police-station"] << "Sheriff and Police Stations";
categories["post-office"] << "DHL Locations" << "Federal Express Locations";
categories["school"] << "Public High Schools" << "Public Elementary Schools" << "Private and Charter Schools";
categories["trail"] << "Trails";
return categories;
}
