Generate offline map with local basemap

// Copyright 2019 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.

import QtQuick

// Create the download button to export the tile cache
Rectangle {
    property bool pressed: false
    signal buttonClicked()

    width: 190
    height: 35
    color: pressed ? "#959595" : "#D6D6D6"
    radius: 5
    border {
        color: "#585858"
        width: 1
    }

    Row {
        anchors.fill: parent
        spacing: 5
        Image {
            width: 38
            height: width
            source: "qrc:/Samples/Maps/GenerateOfflineMapLocalBasemap/download.png"
        }
        Text {
            anchors.verticalCenter: parent.verticalCenter
            text: "Generate Offline Map"
            font.pixelSize: 14
            color: "#474747"
        }
    }

    MouseArea {
        anchors.fill: parent
        onPressed: downloadButton.pressed = true
        onReleased: downloadButton.pressed = false
        onClicked: {
            buttonClicked();
        }
    }
}

// [WriteFile Name=GenerateOfflineMapLocalBasemap, Category=Maps]
// [Legal]
// Copyright 2019 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 "GenerateOfflineMapLocalBasemap.h"

// ArcGIS Maps SDK headers
#include "Envelope.h"
#include "Error.h"
#include "GenerateOfflineMapJob.h"
#include "GenerateOfflineMapParameters.h"
#include "GenerateOfflineMapResult.h"
#include "GeometryEngine.h"
#include "Layer.h"
#include "Map.h"
#include "MapQuickView.h"
#include "OfflineMapTask.h"
#include "Point.h"
#include "PortalItem.h"
#include "SpatialReference.h"
#include "TaskTypes.h"

// Qt headers
#include <QFuture>
#include <QStandardPaths>
#include <QTemporaryDir>
#include <QUuid>
#include <QtCore/qglobal.h>

using namespace Esri::ArcGISRuntime;

// helper method to get cross platform data path
namespace
{
QString defaultDataPath()
{
  QString dataPath;

#ifdef Q_OS_IOS
  dataPath = QStandardPaths::writableLocation(QStandardPaths::DocumentsLocation);
#else
  dataPath = QStandardPaths::writableLocation(QStandardPaths::HomeLocation);
#endif

  return dataPath;
}
} // namespace

const QString GenerateOfflineMapLocalBasemap::s_webMapId = QStringLiteral("acc027394bc84c2fb04d1ed317aac674");

GenerateOfflineMapLocalBasemap::GenerateOfflineMapLocalBasemap(QQuickItem* parent /* = nullptr */):
  QQuickItem(parent)
{
}

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

void GenerateOfflineMapLocalBasemap::componentComplete()
{
  QQuickItem::componentComplete();

  // find QML MapView component
  m_mapView = findChild<MapQuickView*>("mapView");

  // Create a Portal Item for use by the Map and OfflineMapTask
  m_portalItem = new PortalItem(webMapId(), this);

  // Create a map from the Portal Item
  m_map = new Map(m_portalItem, this);

  // Update property once map is done loading
  connect(m_map, &Map::doneLoading, this, [this](const Error& e)
  {
    if (!e.isEmpty())
      return;

    m_mapLoaded = true;
    emit mapLoadedChanged();
  });

  // Set map to map view
  m_mapView->setMap(m_map);

  // Create the OfflineMapTask with the online map
  m_offlineMapTask = new OfflineMapTask(m_map, this);

  // connect to the error signal
  connect(m_offlineMapTask, &OfflineMapTask::errorOccurred, this, [](const Error& e)
  {
    if (e.isEmpty())
      return;

    qDebug() << e.message() << e.additionalMessage();
  });
}

void GenerateOfflineMapLocalBasemap::generateMapByExtent(double xCorner1, double yCorner1, double xCorner2, double yCorner2)
{
  // create an envelope from the QML rectangle corners
  const Point corner1 = m_mapView->screenToLocation(xCorner1, yCorner1);
  const Point corner2 = m_mapView->screenToLocation(xCorner2, yCorner2);
  const Envelope extent = Envelope(corner1, corner2);
  const Envelope mapExtent = geometry_cast<Envelope>(GeometryEngine::project(extent, SpatialReference::webMercator()));
  const QString tempPath = m_tempDir.path() + "/OfflineMap.mmpk";
  const QString dataPath = defaultDataPath() + "/ArcGIS/Runtime/Data/tpkx";

  // generate parameters
  m_offlineMapTask->createDefaultGenerateOfflineMapParametersAsync(mapExtent).then(this,
  [this, tempPath, dataPath](GenerateOfflineMapParameters params)
  {
    // update default parameters to specify use of local basemap
    // this will prevent new tiles from being generated on the server
    // and will reduce generation and download time
    if (m_useLocalBasemap)
    {
      params.setReferenceBasemapDirectory(dataPath);
      // A default reference basemap filename can be specified by the source portal item's advanced offline options.
      params.setReferenceBasemapFilename("naperville_imagery.tpkx");
    }

    // Take the map offline once the parameters are generated
    GenerateOfflineMapJob* generateJob = m_offlineMapTask->generateOfflineMap(params, tempPath);

    // check if there is a valid job
    if (generateJob)
    {
      // connect to the job's status changed signal
      connect(generateJob, &GenerateOfflineMapJob::statusChanged, this, [this, generateJob](JobStatus jobStatus)
      {
        // connect to the job's status changed signal to know once it is done
        switch (jobStatus) {
          case JobStatus::Failed:
            emit updateStatus("Generate failed");
            emit hideWindow(5000, false);
            break;
          case JobStatus::NotStarted:
            emit updateStatus("Job not started");
            break;
          case JobStatus::Paused:
            emit updateStatus("Job paused");
            break;
          case JobStatus::Started:
            emit updateStatus("In progress");
            break;
          case JobStatus::Succeeded:
            // show any layer errors
            if (generateJob->result()->hasErrors())
            {
              QString layerErrors = "";
              const QMap<Layer*, Error>& layerErrorsMap = generateJob->result()->layerErrors();
              for (auto it = layerErrorsMap.cbegin(); it != layerErrorsMap.cend(); ++it)
              {
                layerErrors += it.key()->name() + ": " + it.value().message() + "\n";
              }
              emit showLayerErrors(layerErrors);
            }

            // show the map
            emit updateStatus("Complete");
            emit hideWindow(1500, true);
            m_mapView->setMap(generateJob->result()->offlineMap(this));
            break;
          default:
            break;
        }
      });

      // connect to progress changed signal
      connect(generateJob, &GenerateOfflineMapJob::progressChanged, this, [this, generateJob]()
      {
        emit updateProgress(generateJob->progress());
      });

      // connect to the error signal
      connect(generateJob, &GenerateOfflineMapJob::errorOccurred, this, [](const Error& e)
      {
        if (e.isEmpty())
          return;

        qDebug() << e.message() << e.additionalMessage();
      });

      // start the generate job
      generateJob->start();
    }
    else
    {
      emit updateStatus("Export failed");
      emit hideWindow(5000, false);
    }
  });
}

// [WriteFile Name=GenerateOfflineMapLocalBasemap, Category=Maps]
// [Legal]
// Copyright 2019 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]

#ifndef GENERATEOFFLINEMAPLOCALBASEMAP_H
#define GENERATEOFFLINEMAPLOCALBASEMAP_H

// Qt headers
#include <QQuickItem>
#include <QTemporaryDir>

namespace Esri::ArcGISRuntime
{
class Map;
class MapQuickView;
class PortalItem;
class OfflineMapTask;
}

class GenerateOfflineMapLocalBasemap : public QQuickItem
{
  Q_OBJECT

  Q_PROPERTY(bool mapLoaded MEMBER m_mapLoaded NOTIFY mapLoadedChanged)
  Q_PROPERTY(bool useLocalBasemap MEMBER m_useLocalBasemap NOTIFY useLocalBasemapChanged)

public:
  explicit GenerateOfflineMapLocalBasemap(QQuickItem* parent = nullptr);
  ~GenerateOfflineMapLocalBasemap() override = default;

  void componentComplete() override;
  static void init();

public:
  Q_INVOKABLE void generateMapByExtent(double xCorner1, double yCorner1, double xCorner2, double yCorner2);

signals:
  void mapLoadedChanged();
  void hideWindow(int time, bool success);
  void updateStatus(const QString& status);
  void updateProgress(int progress);
  void showLayerErrors(const QString& error);
  void useLocalBasemapChanged();

private:
  static const QString webMapId() { return s_webMapId; }

private:
  Esri::ArcGISRuntime::Map* m_map = nullptr;
  Esri::ArcGISRuntime::MapQuickView* m_mapView = nullptr;
  Esri::ArcGISRuntime::PortalItem* m_portalItem = nullptr;
  Esri::ArcGISRuntime::OfflineMapTask* m_offlineMapTask = nullptr;
  static const QString s_webMapId;
  bool m_mapLoaded = false;
  bool m_useLocalBasemap = false;
  QTemporaryDir m_tempDir;
};

#endif // GENERATEOFFLINEMAPLOCALBASEMAP_H

// [WriteFile Name=GenerateOfflineMapLocalBasemap, Category=Maps]
// [Legal]
// Copyright 2019 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]

import QtQuick
import QtQuick.Controls
import QtQuick.Layouts
import Esri.Samples

GenerateOfflineMapLocalBasemapSample {
    id: offlineMapSample
    clip: true
    width: 800
    height: 600

    onUpdateStatus: status => generateWindow.statusText = status;
    onUpdateProgress: progress => generateWindow.progressText = progress;
    onHideWindow: (time, success) => {
        generateWindow.hideWindow(time);

        if (success) {
            extentRectangle.visible = false;
            downloadButton.visible = false;
        }
    }

    onShowLayerErrors: {
        msgDialog.detailedText = error;
        msgDialog.open();
    }

    // add a mapView component
    MapView {
        id: mapView
        anchors.fill: parent
        objectName: "mapView"

        Component.onCompleted: {
            // Set the focus on MapView to initially enable keyboard navigation
            forceActiveFocus();
        }

        // Create a button and anchor it to the attribution top
        DownloadButton {
            id: downloadButton
            anchors {
                horizontalCenter: parent.horizontalCenter
                bottom: mapView.attributionTop
                margins: 5
            }
            visible: mapLoaded

            onButtonClicked: {
                dialog.open();
            }
        }
    }

    // Create an extent rectangle for selecting the offline area
    Rectangle {
        id: extentRectangle
        anchors.centerIn: parent
        width: parent.width - 50
        height: parent.height - 125
        color: "transparent"
        visible: mapLoaded
        border {
            color: "red"
            width: 3
        }
    }

    GenerateWindow {
        id: generateWindow
        anchors.fill: parent
    }

    Dialog {
        id: msgDialog
        modal: true
        x: Math.round(parent.width - width) / 2
        y: Math.round(parent.height - height) / 2
        standardButtons: Dialog.Ok
        title: "Layer Errors"
        property alias text : textLabel.text
        property alias detailedText : detailsLabel.text
        ColumnLayout {
            Text {
                id: textLabel
                text: "Some layers could not be taken offline."
            }
            Text {
                id: detailsLabel
            }
        }
    }

    Dialog {
        id: dialog
        anchors.centerIn: parent
        width: 200

        Column {
            spacing: 2
            width: parent.width

            Text {
                width: parent.width
                horizontalAlignment: Text.AlignHCenter
                wrapMode: Text.Wrap
                text: "This web map references a local basemap with the name 'naperville_imagery.tpkx'.\nYou can use the basemap already on disk or download the basemap again"
            }

            Button {
                anchors.horizontalCenter: parent.horizontalCenter
                text: "Use Local Basemap"
                onClicked: {
                    useLocalBasemap = true;
                    generateMapByExtent(extentRectangle.x, extentRectangle.y, (extentRectangle.x + extentRectangle.width), (extentRectangle.y + extentRectangle.height));
                    generateWindow.visible = true;
                    dialog.close();
                }
            }

            Button {
                anchors.horizontalCenter: parent.horizontalCenter
                text: "Download Basemap"
                onClicked: {
                    useLocalBasemap = false;
                    generateMapByExtent(extentRectangle.x, extentRectangle.y, (extentRectangle.x + extentRectangle.width), (extentRectangle.y + extentRectangle.height));
                    generateWindow.visible = true;
                    dialog.close();
                }
            }

            Button {
                anchors.horizontalCenter: parent.horizontalCenter
                text: "Cancel"
                onClicked: dialog.close()
            }
        }
    }
}

// Copyright 2019 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.

import QtQuick
import QtQuick.Controls

Rectangle {
    id: exportWindow
    color: "transparent"
    visible: false
    clip: true

    property string statusText: "Starting"
    property string progressText: "0"

    Rectangle {
        anchors.fill: parent
        color: "#60000000"
    }

    MouseArea {
        anchors.fill: parent
        onClicked: mouse => mouse.accepted = true
        onWheel: wheel => wheel.accepted = true
    }

    Rectangle {
        anchors.centerIn: parent
        width: 135
        height: 100
        color: "lightgrey"
        opacity: 0.8
        radius: 5
        border {
            color: "#4D4D4D"
            width: 1
        }

        Column {
            anchors {
                fill: parent
                margins: 10
            }
            spacing: 10

            BusyIndicator {
                anchors.horizontalCenter: parent.horizontalCenter
            }

            Text {
                anchors.horizontalCenter: parent.horizontalCenter
                text: "%1: %2%".arg(statusText).arg(progressText)
                font.pixelSize: 16
            }
        }
    }

    Timer {
        id: hideWindowTimer

        onTriggered: parent.visible = false;
    }

    function hideWindow(time) {
        hideWindowTimer.interval = time;
        hideWindowTimer.restart();
    }
}

// [Legal]
// Copyright 2019 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]

// sample headers
#include "GenerateOfflineMapLocalBasemap.h"

// ArcGIS Maps SDK headers
#include "ArcGISRuntimeEnvironment.h"

// Qt headers
#include <QCommandLineParser>
#include <QDir>
#include <QGuiApplication>
#include <QQmlEngine>
#include <QQuickView>

// Platform specific headers
#ifdef Q_OS_WIN
#include <Windows.h>
#endif

#define STRINGIZE(x) #x
#define QUOTE(x) STRINGIZE(x)

int main(int argc, char *argv[])
{
  Esri::ArcGISRuntime::ArcGISRuntimeEnvironment::setUseLegacyAuthentication(false);
  QGuiApplication app(argc, argv);
  app.setApplicationName(QString("GenerateOfflineMapLocalBasemap"));

  // Use of ArcGIS location services, such as basemap styles, geocoding, and routing services,
  // requires an access token. For more information see
  // https://links.esri.com/arcgis-runtime-security-auth.

  // The following methods grant an access token:

  // 1. User authentication: Grants a temporary access token associated with a user's ArcGIS account.
  // To generate a token, a user logs in to the app with an ArcGIS account that is part of an
  // organization in ArcGIS Online or ArcGIS Enterprise.

  // 2. API key authentication: Get a long-lived access token that gives your application access to
  // ArcGIS location services. Go to the tutorial at https://links.esri.com/create-an-api-key.
  // Copy the API Key access token.

  const QString accessToken = QString("");

  if (accessToken.isEmpty())
  {
      qWarning() << "Use of ArcGIS location services, such as the basemap styles service, requires" <<
                    "you to authenticate with an ArcGIS account or set the API Key property.";
  }
  else
  {
      Esri::ArcGISRuntime::ArcGISRuntimeEnvironment::setApiKey(accessToken);
  }

  // Initialize the sample
  GenerateOfflineMapLocalBasemap::init();

  // Initialize application view
  QQuickView view;
  view.setResizeMode(QQuickView::SizeRootObjectToView);

  QString arcGISRuntimeImportPath = QUOTE(ARCGIS_RUNTIME_IMPORT_PATH);

#if defined(LINUX_PLATFORM_REPLACEMENT)
  // on some linux platforms the string 'linux' is replaced with 1
  // fix the replacement paths which were created
  QString replaceString = QUOTE(LINUX_PLATFORM_REPLACEMENT);
  arcGISRuntimeImportPath = arcGISRuntimeImportPath.replace(replaceString, "linux", Qt::CaseSensitive);
#endif

  // Add the import Path
  view.engine()->addImportPath(QDir(QCoreApplication::applicationDirPath()).filePath("qml"));
  // Add the Runtime and Extras path
  view.engine()->addImportPath(arcGISRuntimeImportPath);

  // Set the source
  view.setSource(QUrl("qrc:/Samples/Maps/GenerateOfflineMapLocalBasemap/GenerateOfflineMapLocalBasemap.qml"));

  view.show();

  return app.exec();
}