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
// [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]

#ifdef PCH_BUILD
#include "pch.hpp"
#endif // PCH_BUILD

#include "ApplyUniqueValuesWithAlternateSymbols.h"

#include "Basemap.h"
#include "FeatureLayer.h"
#include "Map.h"
#include "MapQuickView.h"
#include "MultilayerPointSymbol.h"
#include "ServiceFeatureTable.h"
#include "SimpleMarkerSymbol.h"
#include "SymbolReferenceProperties.h"
#include "UniqueValueRenderer.h"

using namespace Esri::ArcGISRuntime;

ApplyUniqueValuesWithAlternateSymbols::ApplyUniqueValuesWithAlternateSymbols(QObject* parent /* = nullptr */):
  QObject(parent),
  m_map(new Map(BasemapStyle::ArcGISTopographic, this))
{
  // Create the feature table
  ServiceFeatureTable* featureTable = new ServiceFeatureTable(QUrl("https://sampleserver6.arcgisonline.com/arcgis/rest/services/SF311/FeatureServer/0"), this);

  // Create the feature layer using the feature table
  m_featureLayer = new FeatureLayer(featureTable, this);

  // Add the feature layer to the map
  m_map->operationalLayers()->append(m_featureLayer);

  // This function creates a unique value renderer using
  // one unique value "req_type" that includes a list of
  // alternate symbols for various scales
  createUniqueValueRenderer();
}

ApplyUniqueValuesWithAlternateSymbols::~ApplyUniqueValuesWithAlternateSymbols() = default;

void ApplyUniqueValuesWithAlternateSymbols::init()
{
  // Register the map view for QML
  qmlRegisterType<MapQuickView>("Esri.Samples", 1, 0, "MapView");
  qmlRegisterType<ApplyUniqueValuesWithAlternateSymbols>("Esri.Samples", 1, 0, "ApplyUniqueValuesWithAlternateSymbolsSample");
}

MapQuickView* ApplyUniqueValuesWithAlternateSymbols::mapView() const
{
  return m_mapView;
}

// Set the view (created in QML)
void ApplyUniqueValuesWithAlternateSymbols::setMapView(MapQuickView* mapView)
{
  if (!mapView || mapView == m_mapView)
    return;

  m_mapView = mapView;
  m_mapView->setMap(m_map);

  // Set the initial view point upon opening the sample to focus on an area with a lot of features
  Viewpoint vpCenter = Viewpoint(Point(-13631205.660131, 4546829.846004, SpatialReference::webMercator()), 25000);
  m_mapView->setViewpoint(vpCenter);

  queryCurrentScale();
  emit mapViewChanged();
}

void ApplyUniqueValuesWithAlternateSymbols::createUniqueValueRenderer()
{
  QList<Symbol*> alternateSymbols = createAlternateSymbols();

  double minScale = 5000;
  double maxScale = 0;
  SimpleMarkerSymbol* symbol1 = new SimpleMarkerSymbol(SimpleMarkerSymbolStyle::Triangle, QColor("red"), 30, this);
  MultilayerPointSymbol* multilayerSymbol1 = symbol1->toMultilayerSymbol();
  multilayerSymbol1->setReferenceProperties(new SymbolReferenceProperties(minScale, maxScale, this));

  // Create a unique value with alternate symbols
  UniqueValue* uniqueValue = new UniqueValue("unique value", "unique values based on request type", QVariantList{"Damaged Property"}, multilayerSymbol1, alternateSymbols, this);

  // Create a unique value renderer
  m_uniqueValueRenderer = new UniqueValueRenderer(this);

  // Create and append unique value
  m_uniqueValueRenderer->uniqueValues()->append(uniqueValue);

  m_uniqueValueRenderer->setFieldNames({"req_type"});

  SimpleMarkerSymbol* defaultSym = new SimpleMarkerSymbol(SimpleMarkerSymbolStyle::Diamond, QColor("purple"), 15, this);
  m_uniqueValueRenderer->setDefaultSymbol(defaultSym->toMultilayerSymbol());

  // Set the unique value renderer on the feature layer
  m_featureLayer->setRenderer(m_uniqueValueRenderer);
}

QList<Symbol*> ApplyUniqueValuesWithAlternateSymbols::createAlternateSymbols()
{
  double minScale1 = 10000;
  double maxScale1 = 5000;
  SimpleMarkerSymbol* alternateSymbol1 = new SimpleMarkerSymbol(SimpleMarkerSymbolStyle::Square, QColor("blue"), 45, this);
  MultilayerPointSymbol* alternateSymbolMultilayer1 = alternateSymbol1->toMultilayerSymbol();
  alternateSymbolMultilayer1->setReferenceProperties(new SymbolReferenceProperties(minScale1, maxScale1, this));

  double minScale2 = 20000;
  double maxScale2 = 10000;
  SimpleMarkerSymbol* alternateSymbol2 = new SimpleMarkerSymbol(SimpleMarkerSymbolStyle::Diamond, QColor("yellow"), 30, this);
  MultilayerPointSymbol* alternateSymbolMultilayer2 = alternateSymbol2->toMultilayerSymbol();
  alternateSymbolMultilayer2->setReferenceProperties(new SymbolReferenceProperties(minScale2, maxScale2, this));

  return {alternateSymbolMultilayer1, alternateSymbolMultilayer2};
}

void ApplyUniqueValuesWithAlternateSymbols::resetViewpoint()
{
  if(m_mapView)
  {
    Viewpoint vpCenter = Viewpoint(Point(-13631205.660131, 4546829.846004, SpatialReference::webMercator()), 25000);
    m_mapView->setViewpoint(vpCenter, 5);
  }
}

double ApplyUniqueValuesWithAlternateSymbols::currentScale() const
{
  return m_currentScale;
}

void ApplyUniqueValuesWithAlternateSymbols::queryCurrentScale()
{
  connect(m_mapView, &MapQuickView::viewpointChanged, this, [this](){
    m_currentScale = m_mapView->mapScale();
    emit currentScaleChanged();
  });

}