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// [WriteFile Name=IdentifyRasterCell, Category=Layers]
// [Legal]
// Copyright 2020 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 "IdentifyRasterCell.h"
#include "CalloutData.h"
#include "Map.h"
#include "MapQuickView.h"
#include "Raster.h"
#include "RasterLayer.h"
#include "Error.h"
#include "MapTypes.h"
#include "TaskWatcher.h"
#include "LayerListModel.h"
#include "RasterCell.h"
#include "IdentifyLayerResult.h"
#include "AttributeListModel.h"
#include "Envelope.h"
#include <memory>
#include <QString>
#include <QUuid>
#include <QStandardPaths>
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
IdentifyRasterCell::IdentifyRasterCell(QObject* parent /* = nullptr */):
QObject(parent),
m_map(new Map(BasemapStyle::ArcGISOceans, this))
{
// initialize the raster layer
const QString filepath = defaultDataPath() + "/ArcGIS/Runtime/Data/raster/SA_EVI_8Day_03May20/SA_EVI_8Day_03May20.tif";
Raster* raster = new Raster(filepath, this);
m_rasterLayer = new RasterLayer(raster, this);
m_map->operationalLayers()->append(m_rasterLayer);
}
IdentifyRasterCell::~IdentifyRasterCell() = default;
void IdentifyRasterCell::init()
{
// Register the map view for QML
qmlRegisterType<MapQuickView>("Esri.Samples", 1, 0, "MapView");
qmlRegisterType<IdentifyRasterCell>("Esri.Samples", 1, 0, "IdentifyRasterCellSample");
}
MapQuickView* IdentifyRasterCell::mapView() const
{
return m_mapView;
}
// Set the view (created in QML)
void IdentifyRasterCell::setMapView(MapQuickView* mapView)
{
if (!mapView || mapView == m_mapView)
return;
m_mapView = mapView;
m_mapView->setMap(m_map);
connectSignals();
emit mapViewChanged();
}
void IdentifyRasterCell::connectSignals()
{
connect(m_rasterLayer, &Layer::doneLoading, this, [this](const Error& error)
{
if (!error.isEmpty())
{
qDebug() << error.message() << error.additionalMessage();
return;
}
m_mapView->setViewpointGeometry(m_rasterLayer->fullExtent());
});
connect(m_mapView, &MapQuickView::identifyLayerCompleted, this, [this](const QUuid&, IdentifyLayerResult* rawIdentifyResult)
{
const auto identifyResult = std::unique_ptr<IdentifyLayerResult>(rawIdentifyResult);
const auto elements = identifyResult->geoElements();
for (GeoElement* geoElement : elements)
{
if (RasterCell* rasterCell = dynamic_cast<RasterCell*>(geoElement))
{
QString calloutString;
const AttributeListModel* attributes = rasterCell->attributes();
const QStringList attributeNames = rasterCell->attributes()->attributeNames();
for (int i = 0; i < attributeNames.size(); ++i)
{
const QString value = QVariant((*attributes)[attributeNames[i]]).toString();
calloutString.append(attributeNames[i] + ": " + value + "\n");
}
const double xPoint = rasterCell->geometry().extent().xMin();
const double yPoint = rasterCell->geometry().extent().yMin();
calloutString.append("X: " + QString::number(xPoint, 'f', 2) + " Y: " + QString::number(yPoint, 'f', 2));
m_mapView->calloutData()->setLocation(m_clickedPoint);
m_mapView->calloutData()->setDetail(calloutString);
m_mapView->calloutData()->setVisible(true);
m_calloutData = m_mapView->calloutData();
emit calloutDataChanged();
}
}
});
connect(m_mapView, &MapQuickView::mouseClicked, this, [this](const QMouseEvent& e)
{
m_mapView->identifyLayer(m_rasterLayer, e.position().x(), e.position().y(), 10, false, 1);
m_clickedPoint = m_mapView->screenToLocation(e.position().x(), e.position().y());
});
connect(m_mapView, &MapQuickView::mousePressedAndHeld, this, [this](const QMouseEvent& e)
{
m_mapView->identifyLayer(m_rasterLayer, e.position().x(), e.position().y(), 10, false, 1);
m_clickedPoint = m_mapView->screenToLocation(e.position().x(), e.position().y());
m_mousePressed = true;
});
connect(m_mapView, &MapQuickView::mouseReleased, this, [this](QMouseEvent&)
{
m_mousePressed = false;
});
// if mouse is moved after press-and-hold, then update callout on-the-fly
connect(m_mapView, &MapQuickView::mouseMoved, this, [this](const QMouseEvent& e)
{
if (m_mousePressed)
{
m_mapView->identifyLayer(m_rasterLayer, e.position().x(), e.position().y(), 10, false, 1);
m_clickedPoint = m_mapView->screenToLocation(e.position().x(), e.position().y());
}
});
}
CalloutData* IdentifyRasterCell::calloutData() const
{
return m_calloutData;
}
