Query map image sublayer

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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 // [WriteFile Name=QueryMapImageSublayer, Category=Layers] // [Legal] // Copyright 2018 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  // sample headers #include "QueryMapImageSublayer.h"  // ArcGIS Maps SDK headers #include "ArcGISMapImageLayer.h" #include "ArcGISMapImageSublayer.h" #include "ArcGISSublayerListModel.h" #include "Basemap.h" #include "Envelope.h" #include "Error.h" #include "Feature.h" #include "FeatureIterator.h" #include "FeatureQueryResult.h" #include "Graphic.h" #include "GraphicListModel.h" #include "GraphicsOverlay.h" #include "GraphicsOverlayListModel.h" #include "LayerListModel.h" #include "Map.h" #include "MapQuickView.h" #include "MapTypes.h" #include "Point.h" #include "QueryParameters.h" #include "ServiceFeatureTable.h" #include "SimpleFillSymbol.h" #include "SimpleLineSymbol.h" #include "SimpleMarkerSymbol.h" #include "SpatialReference.h" #include "SymbolTypes.h" #include "Viewpoint.h"  // Qt headers #include <QFuture> #include <QUuid>  using namespace Esri::ArcGISRuntime;  QueryMapImageSublayer::QueryMapImageSublayer(QQuickItem* parent /* = nullptr */):  QQuickItem(parent) { }  void QueryMapImageSublayer::init() {  // Register the map view for QML  qmlRegisterType<MapQuickView>("Esri.Samples", 1, 0, "MapView");  qmlRegisterType<QueryMapImageSublayer>("Esri.Samples", 1, 0, "QueryMapImageSublayerSample"); }  void QueryMapImageSublayer::componentComplete() {  QQuickItem::componentComplete();   // find QML MapView component  m_mapView = findChild<MapQuickView*>("mapView");   // Create a map using the streets vector basemap  m_map = new Map(BasemapStyle::ArcGISStreets, this);   // add map image layer  m_usaImageLayer = new ArcGISMapImageLayer(QUrl("https://sampleserver6.arcgisonline.com/arcgis/rest/services/USA/MapServer"), this);  m_map->operationalLayers()->append(m_usaImageLayer);   // add a graphics overlay  m_selectionOverlay = new GraphicsOverlay(this);  m_mapView->graphicsOverlays()->append(m_selectionOverlay);   // create symbols  createSymbols();   // connect signals  connectSignals();   // set initial viewpoint  Viewpoint vp(Point(-12716000, 4170400, SpatialReference::webMercator()), 6000000 /*scale*/);  m_map->setInitialViewpoint(vp);   // Set map to map view  m_mapView->setMap(m_map); }  void QueryMapImageSublayer::connectSignals() {  connect(m_usaImageLayer, &ArcGISMapImageLayer::doneLoading, this, [this](const Error& e)  {  if (!e.isEmpty())  return;   // load the sublayers and tables of the map image layer  m_usaImageLayer->loadTablesAndLayersAsync().then(this, [this]()  {  ArcGISSublayerListModel* sublayers = m_usaImageLayer->mapImageSublayers();  if (sublayers->size() < 4)  return;   // get the sublayer's tables  m_citiesTable = dynamic_cast<ArcGISMapImageSublayer*>(sublayers->at(0))->table();  m_statesTable = dynamic_cast<ArcGISMapImageSublayer*>(sublayers->at(2))->table();  m_countiesTable = dynamic_cast<ArcGISMapImageSublayer*>(sublayers->at(3))->table();  });  }); }  void QueryMapImageSublayer::createSymbols() {  // create symbol for city selection  m_citySymbol = new SimpleMarkerSymbol(SimpleMarkerSymbolStyle::Circle, QColor("red"), 16.0f /*size*/, this);   // create symbol for county selection  SimpleLineSymbol* countyOutline = new SimpleLineSymbol(SimpleLineSymbolStyle::Dash, QColor("cyan"), 2.0f /*width*/, this);  m_countySymbol = new SimpleFillSymbol(SimpleFillSymbolStyle::DiagonalCross, QColor("cyan"), countyOutline, this);   // create symbol for state selection  SimpleLineSymbol* stateOutline = new SimpleLineSymbol(SimpleLineSymbolStyle::Solid, QColor("darkcyan"), 6.0f /*width*/, this);  m_stateSymbol = new SimpleFillSymbol(SimpleFillSymbolStyle::Null, QColor("transparent"), stateOutline, this); }  void QueryMapImageSublayer::addResultsAsGraphics(FeatureQueryResult* result, Symbol* symbol) {  // get the iterator of features  FeatureIterator iter = result->iterator();   // Create local parent  QObject localParent;   // add a graphic for each feature  while (iter.hasNext())  {  Feature* feat = iter.next(&localParent);  Graphic* graphic = new Graphic(feat->geometry(), symbol, this);  m_selectionOverlay->graphics()->append(graphic);  } }  void QueryMapImageSublayer::query(const QString& whereClause) {  if (!m_citiesTable || !m_countiesTable || !m_statesTable || !m_mapView || !m_selectionOverlay)  return;   // clear & delete previous graphics  GraphicListModel* graphics = m_selectionOverlay->graphics();  const int graphicSize = graphics->size();  for (int i = 0; i < graphicSize; i++)  {  delete graphics->at(i);  }  graphics->clear();   // create the parameters  QueryParameters queryParams;  queryParams.setGeometry(m_mapView->currentViewpoint(ViewpointType::BoundingGeometry).targetGeometry().extent());  queryParams.setWhereClause(whereClause);   // query the feature tables  m_citiesTable->queryFeaturesAsync(queryParams).then(this, [this](FeatureQueryResult* result)  {  addResultsAsGraphics(result, m_citySymbol);  delete result;  });  m_countiesTable->queryFeaturesAsync(queryParams).then(this, [this](FeatureQueryResult* result)  {  addResultsAsGraphics(result, m_countySymbol);  delete result;  });  m_statesTable->queryFeaturesAsync(queryParams).then(this, [this](FeatureQueryResult* result)  {  addResultsAsGraphics(result, m_stateSymbol);  delete result;  }); }