Find a place

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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 // [WriteFile Name=FindPlace, Category=Search] // [Legal] // Copyright 2017 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 "FindPlace.h"  // ArcGIS Maps SDK headers #include "AttributeListModel.h" #include "CalloutData.h" #include "GeoElement.h" #include "GeocodeResult.h" #include "GeometryEngine.h" #include "Graphic.h" #include "GraphicListModel.h" #include "GraphicsOverlay.h" #include "GraphicsOverlayListModel.h" #include "IdentifyGraphicsOverlayResult.h" #include "Location.h" #include "LocationDisplay.h" #include "LocatorTask.h" #include "Map.h" #include "MapQuickView.h" #include "MapTypes.h" #include "MapViewTypes.h" #include "PictureMarkerSymbol.h" #include "Point.h" #include "SimpleRenderer.h" #include "SpatialReference.h" #include "SuggestListModel.h" #include "SuggestParameters.h" #include "Viewpoint.h"  // Qt headers #include <QFuture> #include <QMetaObject> #include <QPermissions> #include <QUrl> #include <QUuid>  using namespace Esri::ArcGISRuntime;  FindPlace::FindPlace(QQuickItem* parent /* = nullptr */):  QQuickItem(parent) { }  FindPlace::~FindPlace() {  m_mapView->locationDisplay()->stop(); }  void FindPlace::init() {  // Register the map view for QML  qmlRegisterType<MapQuickView>("Esri.Samples", 1, 0, "MapView");  qmlRegisterType<FindPlace>("Esri.Samples", 1, 0, "FindPlaceSample");  qmlRegisterUncreatableType<CalloutData>("Esri.Samples", 1, 0, "CalloutData", "CalloutData is an uncreatable type");  qmlRegisterUncreatableType<QAbstractListModel>("Esri.Samples", 1, 0, "AbstractListModel", "AbstractListModel is uncreateable"); }  void FindPlace::componentComplete() {  QQuickItem::componentComplete();   // find QML MapView component  m_mapView = findChild<MapQuickView*>("mapView");   // Create a map using the topographic basemap  m_map = new Map(BasemapStyle::ArcGISTopographic, this);   // Set map to map view  m_mapView->setMap(m_map);   // create the locator  createLocator();   // add the graphics overlay  addGraphicsOverlay();   // initialize callout  m_mapView->calloutData()->setVisible(false);  m_calloutData = m_mapView->calloutData();   connectSignals();   // workaround for https://bugreports.qt.io/browse/QTBUG-134211  // do not request permissions from componentComplete  QMetaObject::invokeMethod(this, [this](){  initiateLocation();  }, Qt::QueuedConnection); }  void FindPlace::connectSignals() {  connect(m_mapView, &MapQuickView::mousePressed, this, [this](QMouseEvent& /*event*/)  {  emit hideSuggestionView();  });   connect(m_mapView, &MapQuickView::viewpointChanged, this, [this]()  {  emit hideSuggestionView();  if (m_graphicsOverlay->graphics()->size() > 0)  emit showExtentButton();  });   // perform an identify operation on mouse clicked  connect(m_mapView, &MapQuickView::mouseClicked, this, [this](QMouseEvent& e)  {  emit hideCallout();  m_mapView->identifyGraphicsOverlayAsync(m_graphicsOverlay, e.position(), 5, false, 1).then(this, [this] (IdentifyGraphicsOverlayResult* result)  {  if (result->graphics().length() == 0)  return;   // display the callout with the identify result  Graphic* graphic = result->graphics().at(0);  m_calloutData->setGeoElement(graphic);  m_calloutData->setTitle(graphic->attributes()->attributeValue("ShortLabel").toString());  m_calloutData->setDetail(graphic->attributes()->attributeValue("Place_addr").toString());  emit showCallout();  });  }); }  void FindPlace::initiateLocation() {  QLocationPermission locationPermission{};  locationPermission.setAccuracy(QLocationPermission::Accuracy::Precise);  locationPermission.setAvailability(QLocationPermission::Availability::WhenInUse);   switch (qApp->checkPermission(locationPermission))  {  case Qt::PermissionStatus::Undetermined:  qApp->requestPermission(locationPermission, this, &FindPlace::initiateLocation);  return;  case Qt::PermissionStatus::Denied:  emit locationPermissionDenied();  return;  case Qt::PermissionStatus::Granted:  m_mapView->locationDisplay()->setAutoPanMode(LocationDisplayAutoPanMode::Recenter);  m_mapView->locationDisplay()->start();  return;  } }  void FindPlace::addGraphicsOverlay() {  // add a graphics overlay to the mapview  m_graphicsOverlay = new GraphicsOverlay(this);  m_mapView->graphicsOverlays()->append(m_graphicsOverlay);   // create a renderer for graphics representing geocode results  PictureMarkerSymbol* pinSymbol = new PictureMarkerSymbol(QUrl("qrc:/Samples/Search/FindPlace/red_pin.png"), this);  pinSymbol->setHeight(36);  pinSymbol->setWidth(19);  pinSymbol->setOffsetY(pinSymbol->height() / 2);  SimpleRenderer* simpleRenderer = new SimpleRenderer(pinSymbol, this);  m_graphicsOverlay->setRenderer(simpleRenderer); }  void FindPlace::createLocator() {  // create a locator task that uses the world geocoding service  m_locatorTask = new LocatorTask(QUrl("https://geocode-api.arcgis.com/arcgis/rest/services/World/GeocodeServer"), this);   // set the suggestions Q_PROPERTY  m_suggestListModel = m_locatorTask->suggestions();  emit suggestionsChanged(); }  void FindPlace::onGeocodingCompleted_(const QList<GeocodeResult>& results) {  // if we are converting the location string to a Point, re-geocode with that information,  // and don't add any graphics to the map  if (m_isSearchingLocation)  {  m_isSearchingLocation = false;  if (results.length() == 0)  return;   GeocodeResult topLocation = results.at(0);  geocodePOIs(m_poiSearchText, topLocation.displayLocation());  return;  }   // create graphics for each geocode result  if (results.length() == 0)  return;   m_graphicsOverlay->graphics()->clear();   // delete parent if it exists  if (m_graphicParent)  {  delete m_graphicParent;  m_graphicParent = nullptr;  }  m_graphicParent = new QObject(this);   Geometry bbox;  for (const GeocodeResult& result : results)  {  Graphic* graphic = new Graphic(result.displayLocation(), result.attributes(), m_graphicParent);  m_graphicsOverlay->graphics()->append(graphic);  // create bounding box so we can set the viewpoint at the end  if (bbox.isEmpty())  bbox = graphic->geometry();  else  bbox = GeometryEngine::unionOf(bbox, graphic->geometry());  }  // zoom to the bounding box  m_mapView->setViewpointGeometryAsync(bbox, 40); }  void FindPlace::setPoiTextHasFocus(bool hasFocus) {  if (m_poiTextHasFocus == hasFocus)  return;   m_poiTextHasFocus = hasFocus;   // create and update the suggestion parameters  SuggestParameters suggestParams;  // the Points of Interest suggestions should use the POI category, and the location  // suggestions should use the Populated Place category as filters  QStringList categories;  m_poiTextHasFocus ? categories << "POI" : categories << "Populated Place";  suggestParams.setCategories(categories);  suggestParams.setMaxResults(5);  if (m_locatorTask)  m_locatorTask->suggestions()->setSuggestParameters(suggestParams);  emit poiTextHasFocusChanged(); }  // set the suggestion search text to fetch suggestions void FindPlace::setSuggestionsText(const QString& searchText) {  if (!m_suggestListModel)  return;   SuggestListModel* suggestListModel = dynamic_cast<SuggestListModel*>(m_suggestListModel);  if (!suggestListModel)  return;   suggestListModel->setSearchText(searchText); }  // geocode without any spatial filter void FindPlace::geocodePOIs(const QString& poi) {  m_poiSearchText = poi;  GeocodeParameters params = createParameters();  m_locatorTask->geocodeWithParametersAsync(poi, params).then(this, [this](const QList<GeocodeResult>& results)  {  onGeocodingCompleted_(results);  }); }  // use extent to filter the geocode results void FindPlace::geocodePOIs(const QString& poi, SearchMode mode) {  m_poiSearchText = poi;   GeocodeParameters params = createParameters();   // If the Mode is CurrentLocation, use the Location Display as preferred search location  if (mode == SearchMode::CurrentLocation)  {  params.setPreferredSearchLocation(m_mapView->locationDisplay()->location().position());  params.setOutputSpatialReference(m_mapView->locationDisplay()->location().position().spatialReference());   m_locatorTask->geocodeWithParametersAsync(m_poiSearchText, params).then(this, [this](const QList<GeocodeResult>& results)  {  onGeocodingCompleted_(results);  });  }  // If the Mode is BoundingGeometry, use the MapView's current viewpoint as the search area  else  {  GeocodeParameters params = createParameters();  Geometry extent = m_mapView->currentViewpoint(ViewpointType::BoundingGeometry).targetGeometry();  params.setSearchArea(extent);  params.setOutputSpatialReference(extent.spatialReference());   m_locatorTask->geocodeWithParametersAsync(m_poiSearchText, params).then(this, [this](const QList<GeocodeResult>& results)  {  onGeocodingCompleted_(results);  });  } }  // use a point as a preferred search location for the geocode results void FindPlace::geocodePOIs(const QString& poi, const Point& location) {  m_poiSearchText = poi;   GeocodeParameters params = createParameters();  params.setPreferredSearchLocation(location);  params.setOutputSpatialReference(location.spatialReference());   m_locatorTask->geocodeWithParametersAsync(m_poiSearchText, params).then(this, [this](const QList<GeocodeResult>& results)  {  onGeocodingCompleted_(results);  }); }  // use a location string as a preferred search location for the geocode results void FindPlace::geocodePOIs(const QString& poi, const QString& location) {  if (location == m_currentLocationText)  {  geocodePOIs(poi, SearchMode::CurrentLocation);  return;  }  m_poiSearchText = poi;  GeocodeParameters params = createParameters();   m_isSearchingLocation = true;  m_locatorTask->geocodeWithParametersAsync(location, params).then(this, [this](const QList<GeocodeResult>& results)  {  onGeocodingCompleted_(results);  }); }  // create base geocode parameters GeocodeParameters FindPlace::createParameters() {  GeocodeParameters params;  params.setResultAttributeNames(QStringList{"*"});  params.setMaxResults(50);  params.setMinScore(75.0);  return params; }