Qt 5.9 | Qt Location | Map Viewer (QML) | RouteAddress.qml Example File

Qt 5.9.4 Reference Documentation

# RouteAddress.qml Example File

mapviewer/forms/RouteAddress.qml

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      import QtQuick 2.5
      import QtLocation 5.6
      import QtPositioning 5.5

      RouteAddressForm {
          property alias plugin : tempGeocodeModel.plugin;
          property variant fromAddress;
          property variant toAddress;
          signal showMessage(string topic, string message)
          signal showRoute(variant startCoordinate,variant endCoordinate)
          signal closeForm()

          goButton.onClicked: {
              tempGeocodeModel.reset()
              fromAddress.country =  fromCountry.text
              fromAddress.street = fromStreet.text
              fromAddress.city =  fromCity.text
              toAddress.country = toCountry.text
              toAddress.street = toStreet.text
              toAddress.city = toCity.text
              tempGeocodeModel.startCoordinate = QtPositioning.coordinate()
              tempGeocodeModel.endCoordinate = QtPositioning.coordinate()
              tempGeocodeModel.query = fromAddress
              tempGeocodeModel.update();
              goButton.enabled = false;
          }

          clearButton.onClicked: {
              fromStreet.text = ""
              fromCity.text = ""
              fromCountry.text = ""
              toStreet.text = ""
              toCity.text = ""
              toCountry.text = ""
          }

          cancelButton.onClicked: {
              closeForm()
          }

          Component.onCompleted: {
              fromStreet.text  = fromAddress.street
              fromCity.text =  fromAddress.city
              fromCountry.text = fromAddress.country
              toStreet.text = toAddress.street
              toCity.text = toAddress.city
              toCountry.text = toAddress.country
          }

          GeocodeModel {
              id: tempGeocodeModel

              property int success: 0
              property variant startCoordinate
              property variant endCoordinate

              onCountChanged: {
                  if (success == 1 && count == 1) {
                      query = toAddress
                      update();
                  }
              }

              onStatusChanged: {
                  if ((status == GeocodeModel.Ready) && (count == 1)) {
                      success++
                      if (success == 1) {
                          startCoordinate.latitude = get(0).coordinate.latitude
                          startCoordinate.longitude = get(0).coordinate.longitude
                      }
                      if (success == 2) {
                          endCoordinate.latitude = get(0).coordinate.latitude
                          endCoordinate.longitude = get(0).coordinate.longitude
                          success = 0
                          if (startCoordinate.isValid && endCoordinate.isValid)
                              showRoute(startCoordinate,endCoordinate)
                          else
                              goButton.enabled = true
                      }
                  } else if ((status == GeocodeModel.Ready) || (status == GeocodeModel.Error)) {
                      var st = (success == 0 ) ? "start" : "end"
                      success = 0
                      if ((status == GeocodeModel.Ready) && (count == 0 )) {
                          showMessage(qsTr("Geocode Error"),qsTr("Unsuccessful geocode"));
                          goButton.enabled = true;
                      }
                      else if (status == GeocodeModel.Error) {
                          showMessage(qsTr("Geocode Error"),
                                      qsTr("Unable to find location for the") + " " +
                                      st + " " +qsTr("point"))
                          goButton.enabled = true;
                      }
                      else if ((status == GeocodeModel.Ready) && (count > 1 )) {
                          showMessage(qsTr("Ambiguous geocode"),
                                      count + " " + qsTr("results found for the") +
                                      " " + st + " " +qsTr("point, please specify location"))
                          goButton.enabled = true;
                      }
                  }
              }
          }
      }