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// [WriteFile Name=ExportVectorTiles, 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 "ExportVectorTiles.h"
#include "ArcGISVectorTiledLayer.h"
#include "ExportVectorTilesTask.h"
#include "ExportVectorTilesParameters.h"
#include "GeometryEngine.h"
#include "GraphicsOverlay.h"
#include "Map.h"
#include "MapQuickView.h"
#include "SimpleLineSymbol.h"
#include "MapTypes.h"
#include "GraphicsOverlayListModel.h"
#include "GraphicListModel.h"
#include "SymbolTypes.h"
#include "TaskWatcher.h"
#include "LayerListModel.h"
#include "ServiceTypes.h"
#include "ExportVectorTilesJob.h"
#include "Error.h"
#include "ExportVectorTilesResult.h"
#include "Viewpoint.h"
#include "Graphic.h"
#include "Envelope.h"
#include "Point.h"
#include "Basemap.h"
#include "SpatialReference.h"
#include <QTemporaryDir>
#include <QUuid>
using namespace Esri::ArcGISRuntime;
ExportVectorTiles::ExportVectorTiles(QObject* parent /* = nullptr */):
QObject(parent),
m_map(new Map(BasemapStyle::ArcGISStreetsNight, this))
{
}
ExportVectorTiles::~ExportVectorTiles() = default;
void ExportVectorTiles::init()
{
// Register the map view for QML
qmlRegisterType<MapQuickView>("Esri.Samples", 1, 0, "MapView");
qmlRegisterType<ExportVectorTiles>("Esri.Samples", 1, 0, "ExportVectorTilesSample");
}
MapQuickView* ExportVectorTiles::mapView() const
{
return m_mapView;
}
// Set the view (created in QML)
void ExportVectorTiles::setMapView(MapQuickView* mapView)
{
if (!mapView || mapView == m_mapView)
return;
m_mapView = mapView;
m_mapView->setMap(m_map);
m_mapView->setViewpoint(Viewpoint(34.049, -117.181, 1e4));
m_graphicsOverlay = new GraphicsOverlay(this);
m_mapView->graphicsOverlays()->append(m_graphicsOverlay);
// Create the graphic that will be used to show the export extent
m_exportAreaGraphic = new Graphic(this);
m_exportAreaGraphic->setSymbol(new SimpleLineSymbol(SimpleLineSymbolStyle::Solid, Qt::green, 3, this));
m_graphicsOverlay->graphics()->append(m_exportAreaGraphic);
emit mapViewChanged();
}
void ExportVectorTiles::startExport(double xSW, double ySW, double xNE, double yNE)
{
if (!m_map->basemap() || m_map->basemap()->baseLayers()->isEmpty() || m_map->basemap()->baseLayers()->first()->layerType() != LayerType::ArcGISVectorTiledLayer)
return;
// Get the first layer of the basemap baselayers as a vector tiled layer for export
ArcGISVectorTiledLayer* vectorTiledLayer = static_cast<ArcGISVectorTiledLayer*>(m_map->basemap()->baseLayers()->first());
ExportVectorTilesTask* exportTask = new ExportVectorTilesTask(vectorTiledLayer->url(), this);
// Create an envelope from the QML rectangle corners
const Point corner1 = m_mapView->screenToLocation(xSW, ySW);
const Point corner2 = m_mapView->screenToLocation(xNE, yNE);
const Envelope extent = Envelope(corner1, corner2);
// Normalize the central meridian to export tiles if the export area crosses the antemeridian
const Geometry exportArea = GeometryEngine::normalizeCentralMeridian(GeometryEngine::project(extent, vectorTiledLayer->spatialReference()));
m_exportAreaGraphic->setGeometry(exportArea);
// Create an async connection for when the default export parameters are created
connect(exportTask, &ExportVectorTilesTask::createDefaultExportVectorTilesParametersCompleted, this,
[exportTask, this](const QUuid&, ExportVectorTilesParameters exportParameters)
{
// Using the reduced fonts service will reduce the download size of a vtpk by around 80 Mb
// It is useful for taking the basemap offline but not recommended if you plan to later upload the vtpk
exportParameters.setEsriVectorTilesDownloadOption(EsriVectorTilesDownloadOption::UseReducedFontsService);
// Create a path to store the vector tile package, the file cannot already exist
const QString vectorTileCachePath = m_tempDir.path() + QString("/vectorTiles%1.vtpk").arg(QDateTime::currentMSecsSinceEpoch());
// Create a path to an empty directory to store the styling resources (in this case, the night mode version of the layer)
const QString itemResourcePath = m_tempDir.path() + QString("/itemResources%1").arg(QDateTime::currentMSecsSinceEpoch());
// Create a job that will download the vector tiles to the given paths
m_exportJob = exportTask->exportVectorTiles(exportParameters, vectorTileCachePath, itemResourcePath);
connect(m_exportJob, &ExportVectorTilesJob::jobDone, this, [this]()
{
if (m_exportJob->error().isEmpty())
{
VectorTileCache* vectorTileCache = m_exportJob->result()->vectorTileCache();
ItemResourceCache* itemResourceCache = m_exportJob->result()->itemResourceCache();
// Create a vector tiled layer when the download is completed
ArcGISVectorTiledLayer* exportedLayer = new ArcGISVectorTiledLayer(vectorTileCache, itemResourceCache, this);
m_map->setBasemap(new Basemap(exportedLayer, this));
m_isUsingOfflineBasemap = true;
m_exportJob->disconnect();
}
});
connect(m_exportJob, &Job::progressChanged, this, [this]()
{
m_exportProgress = m_exportJob->progress();
emit exportProgressChanged();
});
connect(m_exportJob, &Job::statusChanged, this, [this](JobStatus s)
{
m_jobStatus = (int)s;
emit jobStatusChanged();
});
connect(m_exportJob, &Job::cancelAsyncCompleted, this, [this](const QUuid&, bool succeeded)
{
emit jobCancelDone(succeeded);
});
m_exportJob->start();
});
// Instantiate export parameters to create the export job with
exportTask->createDefaultExportVectorTilesParameters(exportArea, m_mapView->mapScale() * 0.1);
}
void ExportVectorTiles::cancel()
{
m_exportJob->cancelAsync();
reset();
}
void ExportVectorTiles::reset()
{
if (m_isUsingOfflineBasemap)
{
m_map->setBasemap(new Basemap(BasemapStyle::ArcGISStreetsNight, this));
m_isUsingOfflineBasemap = false;
}
m_exportAreaGraphic->setGeometry(Geometry());
m_jobStatus = 0; // Override the job status to set the UI button to "Export area" again
emit jobStatusChanged();
}
int ExportVectorTiles::exportProgress() const
{
return m_exportProgress;
}
int ExportVectorTiles::jobStatus() const
{
return m_jobStatus;
}
