File indexing completed on 2025-01-05 03:59:17

 // SPDX-License-Identifier: LGPL-2.1-or-later
 //
 // SPDX-FileCopyrightText: 2008-2009 Patrick Spendrin <ps_ml@gmx.de>
 // SPDX-FileCopyrightText: 2010 Thibaut Gridel <tgridel@free.fr>
 // SPDX-FileCopyrightText: 2011-2012 Bernhard Beschow <bbeschow@cs.tu-berlin.de>
 // SPDX-FileCopyrightText: 2014 Gábor Péterffy <peterffy95@gmail.com>
 //
 
 #include "GeometryLayer.h"
 
 // Qt
 #include <qmath.h>
 #include <QAbstractItemModel>
 #include <QModelIndex>
 
 // Marble
 #include "GeoDataLatLonAltBox.h"
 #include "GeoDataDocument.h"
 #include "GeoDataFolder.h"
 #include "GeoDataLineStyle.h"
 #include "GeoDataMultiTrack.h"
 #include "GeoDataObject.h"
 #include "GeoDataPlacemark.h"
 #include "GeoDataLinearRing.h"
 #include "GeoDataMultiGeometry.h"
 #include "GeoDataPolygon.h"
 #include "GeoDataBuilding.h"
 #include "GeoDataPolyStyle.h"
 #include "GeoDataStyle.h"
 #include "GeoDataIconStyle.h"
 #include "GeoDataStyleMap.h"
 #include "GeoDataTrack.h"
 #include "GeoDataFeature.h"
 #include "GeoPainter.h"
 #include "ViewportParams.h"
 #include "RenderState.h"
 #include "GeoGraphicsScene.h"
 #include "GeoGraphicsItem.h"
 #include "GeoLineStringGraphicsItem.h"
 #include "GeoPolygonGraphicsItem.h"
 #include "GeoTrackGraphicsItem.h"
 #include "GeoDataPhotoOverlay.h"
 #include "GeoDataScreenOverlay.h"
 #include "GeoPhotoGraphicsItem.h"
 #include "ScreenOverlayGraphicsItem.h"
 #include "TileId.h"
 #include "MarbleGraphicsItem.h"
 #include "MarblePlacemarkModel.h"
 #include "GeoDataTreeModel.h"
 #include "OsmPlacemarkData.h"
 #include "StyleBuilder.h"
 #include "AbstractGeoPolygonGraphicsItem.h"
 
 #include "digikam_debug.h"
 
 namespace Marble
 {
 class GeometryLayerPrivate
 {
 public:
     using OsmLineStringItems = QVector<GeoLineStringGraphicsItem *>;
     using Relations = QSet<const GeoDataRelation *>;
     typedef QHash<const GeoDataFeature *, Relations> FeatureRelationHash;
     using GeoGraphicItems = QVector<GeoGraphicsItem *>;
 
     struct PaintFragments {
         // Three lists for different z values
         // A z value of 0 is default and used by the majority of items, so sorting
         // can be avoided for it
         QVector<GeoGraphicsItem*> negative; // subways
         QVector<GeoGraphicsItem*> null;     // areas and roads
         QVector<GeoGraphicsItem*> positive; // buildings
     };
 
     explicit GeometryLayerPrivate(const QAbstractItemModel *model, const StyleBuilder *styleBuilder);
 
     void createGraphicsItems(const GeoDataObject *object);
     void createGraphicsItems(const GeoDataObject *object, FeatureRelationHash &relations);
     void createGraphicsItemFromGeometry(const GeoDataGeometry *object, const GeoDataPlacemark *placemark, const Relations &relations);
     void createGraphicsItemFromOverlay(const GeoDataOverlay *overlay);
     void removeGraphicsItems(const GeoDataFeature *feature);
     void updateTiledLineStrings(const GeoDataPlacemark *placemark, GeoLineStringGraphicsItem* lineStringItem);
     static void updateTiledLineStrings(OsmLineStringItems &lineStringItems);
     void clearCache();
     bool showRelation(const GeoDataRelation* relation) const;
     void updateRelationVisibility();
 
     const QAbstractItemModel *const m_model;
     const StyleBuilder *const m_styleBuilder;
     GeoGraphicsScene m_scene;
     QString m_runtimeTrace;
     QList<ScreenOverlayGraphicsItem*> m_screenOverlays;
 
     QHash<qint64, OsmLineStringItems> m_osmLineStringItems;
     int m_tileLevel;
     GeoGraphicsItem* m_lastFeatureAt;
 
     bool m_dirty;
     int m_cachedItemCount;
     QHash<QString, GeoGraphicItems> m_cachedPaintFragments;
     typedef QPair<QString, GeoGraphicsItem*> LayerItem;
     QList<LayerItem> m_cachedDefaultLayer;
     QDateTime m_cachedDateTime;
     GeoDataLatLonBox m_cachedLatLonBox;
     QSet<qint64> m_highlightedRouteRelations;
     GeoDataRelation::RelationTypes m_visibleRelationTypes;
     bool m_levelTagDebugModeEnabled;
     int m_debugLevelTag;
 };
 
 GeometryLayerPrivate::GeometryLayerPrivate(const QAbstractItemModel *model, const StyleBuilder *styleBuilder) :
     m_model(model),
     m_styleBuilder(styleBuilder),
     m_tileLevel(0),
     m_lastFeatureAt(nullptr),
     m_dirty(true),
     m_cachedItemCount(0),
     m_visibleRelationTypes(GeoDataRelation::RouteFerry),
     m_levelTagDebugModeEnabled(false),
     m_debugLevelTag(0)
 {
 }
 
 void GeometryLayerPrivate::createGraphicsItems(const GeoDataObject *object)
 {
     FeatureRelationHash noRelations;
     createGraphicsItems(object, noRelations);
 }
 
 GeometryLayer::GeometryLayer(const QAbstractItemModel *model, const StyleBuilder *styleBuilder) :
     d(new GeometryLayerPrivate(model, styleBuilder))
 {
     const GeoDataObject *object = static_cast<GeoDataObject*>(d->m_model->index(0, 0, QModelIndex()).internalPointer());
     if (object && object->parent()) {
         d->createGraphicsItems(object->parent());
     }
 
     connect(model, SIGNAL(dataChanged(QModelIndex,QModelIndex)),
             this, SLOT(resetCacheData()));
     connect(model, SIGNAL(rowsInserted(QModelIndex,int,int)),
             this, SLOT(addPlacemarks(QModelIndex,int,int)));
     connect(model, SIGNAL(rowsAboutToBeRemoved(QModelIndex,int,int)),
             this, SLOT(removePlacemarks(QModelIndex,int,int)));
     connect(model, SIGNAL(modelReset()),
             this, SLOT(resetCacheData()));
     connect(this, SIGNAL(highlightedPlacemarksChanged(QVector<GeoDataPlacemark*>)),
             &d->m_scene, SLOT(applyHighlight(QVector<GeoDataPlacemark*>)));
     connect(&d->m_scene, SIGNAL(repaintNeeded()),
             this, SIGNAL(repaintNeeded()));
 }
 
 GeometryLayer::~GeometryLayer()
 {
     delete d;
 }
 
 QStringList GeometryLayer::renderPosition() const
 {
     return QStringList(QStringLiteral("HOVERS_ABOVE_SURFACE"));
 }
 
 
 bool GeometryLayer::render(GeoPainter *painter, ViewportParams *viewport,
                            const QString& renderPos, GeoSceneLayer * layer)
 {
     Q_UNUSED(renderPos)
     Q_UNUSED(layer)
 
     painter->save();
 
     auto const & box = viewport->viewLatLonAltBox();
     bool isEqual = GeoDataLatLonBox::fuzzyCompare(d->m_cachedLatLonBox, box, 0.05);
 
     if (d->m_cachedLatLonBox.isEmpty() || !isEqual) {
         d->m_dirty = true;
     }
 
     // update the items cache at least every second since the last request
     auto const now = QDateTime::currentDateTime();
     if (!d->m_cachedDateTime.isValid() || d->m_cachedDateTime.msecsTo(now) > 1000) {
         d->m_dirty = true;
     }
 
     if (d->m_dirty) {
         d->m_dirty = false;
 
         const int maxZoomLevel = qMin(d->m_tileLevel, d->m_styleBuilder->maximumZoomLevel());
         auto const items = d->m_scene.items(box, maxZoomLevel);
         d->m_cachedLatLonBox = box;
         d->m_cachedDateTime = now;
 
         d->m_cachedItemCount = items.size();
         d->m_cachedDefaultLayer.clear();
         d->m_cachedPaintFragments.clear();
         QHash<QString, GeometryLayerPrivate::PaintFragments> paintFragments;
         const QStringList &renderOrder = d->m_styleBuilder->renderOrder();
         QSet<QString> const knownLayers(renderOrder.constBegin(), renderOrder.constEnd());
         for (GeoGraphicsItem* item: items) {
             QStringList paintLayers = item->paintLayers();
             if (paintLayers.isEmpty()) {
                 qCDebug(DIGIKAM_MARBLE_LOG) << item << " provides no paint layers, so I force one onto it.";
                 paintLayers << QString();
             }
             for (const auto &layer: paintLayers) {
                 if (knownLayers.contains(layer)) {
                     GeometryLayerPrivate::PaintFragments &fragments = paintFragments[layer];
                     double const zValue = item->zValue();
                     // assign subway stations
                     if (zValue == 0.0) {
                         fragments.null << item;
                         // assign areas and streets
                     } else if (zValue < 0.0) {
                         fragments.negative << item;
                         // assign buildings
                     } else {
                         fragments.positive << item;
                     }
                 } else {
                     // assign symbols
                     d->m_cachedDefaultLayer << GeometryLayerPrivate::LayerItem(layer, item);
                     static QSet<QString> missingLayers;
                     if (!missingLayers.contains(layer)) {
                         qCDebug(DIGIKAM_MARBLE_LOG) << "Missing layer " << layer << ", in render order, will render it on top";
                         missingLayers << layer;
                     }
                 }
             }
         }
         // Sort each fragment by z-level
         for (const QString &layer: d->m_styleBuilder->renderOrder()) {
             GeometryLayerPrivate::PaintFragments & layerItems = paintFragments[layer];
             std::sort(layerItems.negative.begin(), layerItems.negative.end(), GeoGraphicsItem::zValueLessThan);
             // The idea here is that layerItems.null has most items and does not need to be sorted by z-value
             // since they are all equal (=0). We do sort them by style pointer though for batch rendering
             std::sort(layerItems.null.begin(), layerItems.null.end(), GeoGraphicsItem::styleLessThan);
             std::sort(layerItems.positive.begin(), layerItems.positive.end(), GeoGraphicsItem::zValueAndStyleLessThan);
             auto const count = layerItems.negative.size() + layerItems.null.size() + layerItems.positive.size();
             d->m_cachedPaintFragments[layer].reserve(count);
             d->m_cachedPaintFragments[layer] << layerItems.negative;
             d->m_cachedPaintFragments[layer] << layerItems.null;
             d->m_cachedPaintFragments[layer] << layerItems.positive;
         }
     }
 
     for (const QString &layer: d->m_styleBuilder->renderOrder()) {
         auto & layerItems = d->m_cachedPaintFragments[layer];
         AbstractGeoPolygonGraphicsItem::s_previousStyle = nullptr;
         GeoLineStringGraphicsItem::s_previousStyle = nullptr;
         for (auto item: layerItems) {
             if (d->m_levelTagDebugModeEnabled) {
                 if (const auto placemark = geodata_cast<GeoDataPlacemark>(item->feature())) {
                     if (placemark->hasOsmData()) {
                         QHash<QString, QString>::const_iterator tagIter = placemark->osmData().findTag(QStringLiteral("level"));
                         if (tagIter != placemark->osmData().tagsEnd()) {
                             const int val = tagIter.value().toInt();
                             if (val != d->m_debugLevelTag) {
                                 continue;
                             }
                         }
                     }
                 }
             }
             item->paint(painter, viewport, layer, d->m_tileLevel);
         }
     }
 
     for (const auto & item: d->m_cachedDefaultLayer) {
         item.second->paint(painter, viewport, item.first, d->m_tileLevel);
     }
 
     for (ScreenOverlayGraphicsItem* item: d->m_screenOverlays) {
         item->paintEvent(painter, viewport);
     }
 
     painter->restore();
     d->m_runtimeTrace = QStringLiteral("Geometries: %1 Zoom: %2")
                         .arg(d->m_cachedItemCount)
                         .arg(d->m_tileLevel);
     return true;
 }
 
 RenderState GeometryLayer::renderState() const
 {
     return RenderState(QStringLiteral("GeoGraphicsScene"));
 }
 
 QString GeometryLayer::runtimeTrace() const
 {
     return d->m_runtimeTrace;
 }
 
 bool GeometryLayer::hasFeatureAt(const QPoint &curpos, const ViewportParams *viewport)
 {
     if (d->m_lastFeatureAt && d->m_lastFeatureAt->contains(curpos, viewport)) {
         return true;
     }
 
     auto const renderOrder = d->m_styleBuilder->renderOrder();
     for (int i = renderOrder.size() - 1; i >= 0; --i) {
         auto & layerItems = d->m_cachedPaintFragments[renderOrder[i]];
         for (auto item : layerItems) {
             if (item->contains(curpos, viewport)) {
                 d->m_lastFeatureAt = item;
                 return true;
             }
         }
     }
 
     return false;
 }
 
 void GeometryLayerPrivate::createGraphicsItems(const GeoDataObject *object, FeatureRelationHash &relations)
 {
     clearCache();
     if (auto document = geodata_cast<GeoDataDocument>(object)) {
         for (auto feature: document->featureList()) {
             if (auto relation = geodata_cast<GeoDataRelation>(feature)) {
                 relation->setVisible(showRelation(relation));
                 for (auto member: relation->members()) {
                     relations[member] << relation;
                 }
             }
         }
     }
     if (auto placemark = geodata_cast<GeoDataPlacemark>(object)) {
         createGraphicsItemFromGeometry(placemark->geometry(), placemark, relations.value(placemark));
     } else if (const GeoDataOverlay* overlay = dynamic_cast<const GeoDataOverlay*>(object)) {
         createGraphicsItemFromOverlay(overlay);
     }
 
     // parse all child objects of the container
     if (const GeoDataContainer *container = dynamic_cast<const GeoDataContainer*>(object)) {
         int rowCount = container->size();
         for (int row = 0; row < rowCount; ++row) {
             createGraphicsItems(container->child(row), relations);
         }
     }
 }
 
 void GeometryLayerPrivate::updateTiledLineStrings(const GeoDataPlacemark* placemark, GeoLineStringGraphicsItem* lineStringItem)
 {
     if (!placemark->hasOsmData()) {
         return;
     }
     qint64 const osmId = placemark->osmData().oid();
     if (osmId <= 0) {
         return;
     }
     auto & lineStringItems = m_osmLineStringItems[osmId];
     lineStringItems << lineStringItem;
     updateTiledLineStrings(lineStringItems);
 }
 
 void GeometryLayerPrivate::updateTiledLineStrings(OsmLineStringItems &lineStringItems)
 {
     GeoDataLineString merged;
     if (lineStringItems.size() > 1) {
         QVector<const GeoDataLineString*> lineStrings;
         for (auto item : lineStringItems) {
             lineStrings << item->lineString();
         }
         merged = GeoLineStringGraphicsItem::merge(lineStrings);
     }
 
     // If merging failed, reset all. Otherwise only the first one
     // gets the merge result and becomes visible.
     bool visible = true;
     for (auto item : lineStringItems) {
         item->setVisible(visible);
         if (visible) {
             item->setMergedLineString(merged);
             visible = merged.isEmpty();
         }
     }
 }
 
 void GeometryLayerPrivate::clearCache()
 {
     m_lastFeatureAt = nullptr;
     m_dirty = true;
     m_cachedDateTime = QDateTime();
     m_cachedItemCount = 0;
     m_cachedPaintFragments.clear();
     m_cachedDefaultLayer.clear();
     m_cachedLatLonBox = GeoDataLatLonBox();
 }
 
 inline bool GeometryLayerPrivate::showRelation(const GeoDataRelation *relation) const
 {
     return (m_visibleRelationTypes.testFlag(relation->relationType())
             || m_highlightedRouteRelations.contains(relation->osmData().oid()));
 }
 
 void GeometryLayerPrivate::updateRelationVisibility()
 {
     for (int i = 0; i < m_model->rowCount(); ++i) {
         QVariant const data = m_model->data(m_model->index(i, 0), MarblePlacemarkModel::ObjectPointerRole);
         GeoDataObject *object = qvariant_cast<GeoDataObject*> (data);
         if (auto doc = geodata_cast<GeoDataDocument>(object)) {
             for (auto feature: doc->featureList()) {
                 if (auto relation = geodata_cast<GeoDataRelation>(feature)) {
                     relation->setVisible(showRelation(relation));
                 }
             }
         }
     }
     m_scene.resetStyle();
 }
 
 void GeometryLayerPrivate::createGraphicsItemFromGeometry(const GeoDataGeometry* object, const GeoDataPlacemark *placemark, const Relations &relations)
 {
     if (!placemark->isGloballyVisible()) {
         return; // Reconsider this when visibility can be changed dynamically
     }
 
     GeoGraphicsItem *item = nullptr;
     if (const auto line = geodata_cast<GeoDataLineString>(object)) {
         auto lineStringItem = new GeoLineStringGraphicsItem(placemark, line);
         item = lineStringItem;
         updateTiledLineStrings(placemark, lineStringItem);
     } else if (const auto ring = geodata_cast<GeoDataLinearRing>(object)) {
         item = GeoPolygonGraphicsItem::createGraphicsItem(placemark, ring);
     } else if (const auto poly = geodata_cast<GeoDataPolygon>(object)) {
         item = GeoPolygonGraphicsItem::createGraphicsItem(placemark, poly);
         if (item->zValue() == 0) {
             item->setZValue(poly->renderOrder());
         }
     } else if (const auto building = geodata_cast<GeoDataBuilding>(object)) {
         item = GeoPolygonGraphicsItem::createGraphicsItem(placemark, building);
     } else if (const auto multigeo = geodata_cast<GeoDataMultiGeometry>(object)) {
         int rowCount = multigeo->size();
         for (int row = 0; row < rowCount; ++row) {
             createGraphicsItemFromGeometry(multigeo->child(row), placemark, relations);
         }
     } else if (const auto multitrack = geodata_cast<GeoDataMultiTrack>(object)) {
         int rowCount = multitrack->size();
         for (int row = 0; row < rowCount; ++row) {
             createGraphicsItemFromGeometry(multitrack->child(row), placemark, relations);
         }
     } else if (const auto track = geodata_cast<GeoDataTrack>(object)) {
         item = new GeoTrackGraphicsItem(placemark, track);
     }
     if (!item) {
         return;
     }
     item->setRelations(relations);
     item->setStyleBuilder(m_styleBuilder);
     item->setVisible(item->visible() && placemark->isGloballyVisible());
     item->setMinZoomLevel(m_styleBuilder->minimumZoomLevel(*placemark));
     m_scene.addItem(item);
 }
 
 void GeometryLayerPrivate::createGraphicsItemFromOverlay(const GeoDataOverlay *overlay)
 {
     if (!overlay->isGloballyVisible()) {
         return; // Reconsider this when visibility can be changed dynamically
     }
 
     GeoGraphicsItem* item = nullptr;
     if (const auto photoOverlay = geodata_cast<GeoDataPhotoOverlay>(overlay)) {
         GeoPhotoGraphicsItem *photoItem = new GeoPhotoGraphicsItem(overlay);
         photoItem->setPoint(photoOverlay->point());
         item = photoItem;
     } else if (const auto screenOverlay = geodata_cast<GeoDataScreenOverlay>(overlay)) {
         ScreenOverlayGraphicsItem *screenItem = new ScreenOverlayGraphicsItem(screenOverlay);
         m_screenOverlays.push_back(screenItem);
     }
 
     if (item) {
         item->setStyleBuilder(m_styleBuilder);
         item->setVisible(overlay->isGloballyVisible());
         m_scene.addItem(item);
     }
 }
 
 void GeometryLayerPrivate::removeGraphicsItems(const GeoDataFeature *feature)
 {
     clearCache();
     if (const auto placemark = geodata_cast<GeoDataPlacemark>(feature)) {
         if (placemark->isGloballyVisible() &&
             geodata_cast<GeoDataLineString>(placemark->geometry()) &&
             placemark->hasOsmData() &&
             placemark->osmData().oid() > 0) {
             auto & items = m_osmLineStringItems[placemark->osmData().oid()];
             bool removed = false;
             for (auto item : items) {
                 if (item->feature() == feature) {
                     items.removeOne(item);
                     removed = true;
                     break;
                 }
             }
             Q_ASSERT(removed);
             updateTiledLineStrings(items);
         }
         m_scene.removeItem(feature);
     } else if (const auto container = dynamic_cast<const GeoDataContainer*>(feature)) {
         for (const GeoDataFeature *child: container->featureList()) {
             removeGraphicsItems(child);
         }
     } else if (geodata_cast<GeoDataScreenOverlay>(feature)) {
         for (ScreenOverlayGraphicsItem  *item: m_screenOverlays) {
             if (item->screenOverlay() == feature) {
                 m_screenOverlays.removeAll(item);
             }
         }
     }
 }
 
 void GeometryLayer::addPlacemarks(const QModelIndex& parent, int first, int last)
 {
     Q_ASSERT(first < d->m_model->rowCount(parent));
     Q_ASSERT(last < d->m_model->rowCount(parent));
     for (int i = first; i <= last; ++i) {
         QModelIndex index = d->m_model->index(i, 0, parent);
         Q_ASSERT(index.isValid());
         const GeoDataObject *object = qvariant_cast<GeoDataObject*>(index.data(MarblePlacemarkModel::ObjectPointerRole));
         Q_ASSERT(object);
         d->createGraphicsItems(object);
     }
     Q_EMIT repaintNeeded();
 
 }
 
 void GeometryLayer::removePlacemarks(const QModelIndex& parent, int first, int last)
 {
     Q_ASSERT(last < d->m_model->rowCount(parent));
     bool isRepaintNeeded = false;
     for (int i = first; i <= last; ++i) {
         QModelIndex index = d->m_model->index(i, 0, parent);
         Q_ASSERT(index.isValid());
         const GeoDataObject *object = qvariant_cast<GeoDataObject*>(index.data(MarblePlacemarkModel::ObjectPointerRole));
         const GeoDataFeature *feature = dynamic_cast<const GeoDataFeature*>(object);
         if (feature != nullptr) {
             d->removeGraphicsItems(feature);
             isRepaintNeeded = true;
         }
     }
     if (isRepaintNeeded) {
         Q_EMIT repaintNeeded();
     }
 
 }
 
 void GeometryLayer::resetCacheData()
 {
     d->clearCache();
     d->m_scene.clear();
     qDeleteAll(d->m_screenOverlays);
     d->m_screenOverlays.clear();
     d->m_osmLineStringItems.clear();
 
     const GeoDataObject *object = static_cast<GeoDataObject*>(d->m_model->index(0, 0, QModelIndex()).internalPointer());
     if (object && object->parent()) {
         d->createGraphicsItems(object->parent());
     }
     Q_EMIT repaintNeeded();
 }
 
 void GeometryLayer::setTileLevel(int tileLevel)
 {
     d->m_tileLevel = tileLevel;
 }
 
 QVector<const GeoDataFeature*> GeometryLayer::whichFeatureAt(const QPoint &curpos, const ViewportParams *viewport)
 {
     QVector<const GeoDataFeature*> result;
     auto const renderOrder = d->m_styleBuilder->renderOrder();
     QString const label = QStringLiteral("/label");
     QSet<GeoGraphicsItem*> checked;
     for (int i = renderOrder.size()-1; i >= 0; --i) {
         if (renderOrder[i].endsWith(label)) {
             continue;
         }
         auto & layerItems = d->m_cachedPaintFragments[renderOrder[i]];
         for (auto j = layerItems.size()-1; j >= 0; --j) {
             auto const & layerItem = layerItems[j];
             if (!checked.contains(layerItem)) {
                 if (layerItem->contains(curpos, viewport)) {
                     result << layerItem->feature();
                 }
                 checked << layerItem;
             }
         }
     }
 
     return result;
 }
 
 void GeometryLayer::highlightRouteRelation(qint64 osmId, bool enabled)
 {
     if (enabled) {
         d->m_highlightedRouteRelations << osmId;
     } else {
         d->m_highlightedRouteRelations.remove(osmId);
     }
     d->updateRelationVisibility();
 }
 
 void GeometryLayer::setVisibleRelationTypes(GeoDataRelation::RelationTypes relationTypes)
 {
     if (relationTypes != d->m_visibleRelationTypes) {
         d->m_visibleRelationTypes = relationTypes;
         d->updateRelationVisibility();
     }
 }
 
 void GeometryLayer::handleHighlight(qreal lon, qreal lat, GeoDataCoordinates::Unit unit)
 {
     GeoDataCoordinates clickedPoint(lon, lat, 0, unit);
     QVector<GeoDataPlacemark*> selectedPlacemarks;
 
     for (int i = 0; i < d->m_model->rowCount(); ++i) {
         QVariant const data = d->m_model->data(d->m_model->index(i, 0), MarblePlacemarkModel::ObjectPointerRole);
         GeoDataObject *object = qvariant_cast<GeoDataObject*> (data);
         Q_ASSERT(object);
         if (const auto doc = geodata_cast<GeoDataDocument>(object)) {
             bool isHighlight = false;
 
             for (const GeoDataStyleMap &styleMap: doc->styleMaps()) {
                 if (styleMap.contains(QStringLiteral("highlight"))) {
                     isHighlight = true;
                     break;
                 }
             }
 
             /*
              * If a document doesn't specify any highlight
              * styleId in its style maps then there is no need
              * to further check that document for placemarks
              * which have been clicked because we won't
              * highlight them.
              */
             if (isHighlight) {
                 QVector<GeoDataFeature*>::Iterator iter = doc->begin();
                 QVector<GeoDataFeature*>::Iterator const end = doc->end();
 
                 for (; iter != end; ++iter) {
                     if (auto placemark = geodata_cast<GeoDataPlacemark>(*iter)) {
                         GeoDataPolygon *polygon = dynamic_cast<GeoDataPolygon*>(placemark->geometry());
                         if (polygon &&
                             polygon->contains(clickedPoint)) {
                             selectedPlacemarks.push_back(placemark);
                         }
 
                         if (auto linearRing = geodata_cast<GeoDataLinearRing>(placemark->geometry())) {
                             if (linearRing->contains(clickedPoint)) {
                                 selectedPlacemarks.push_back(placemark);
                             }
                         }
 
                         if (auto multiGeometry = geodata_cast<GeoDataMultiGeometry>(placemark->geometry())) {
                             QVector<GeoDataGeometry*>::Iterator multiIter = multiGeometry->begin();
                             QVector<GeoDataGeometry*>::Iterator const multiEnd = multiGeometry->end();
 
                             for (; multiIter != multiEnd; ++multiIter) {
                                 GeoDataPolygon *poly = dynamic_cast<GeoDataPolygon*>(*multiIter);
 
                                 if (poly &&
                                     poly->contains(clickedPoint)) {
                                     selectedPlacemarks.push_back(placemark);
                                     break;
                                 }
 
                                 if (auto linearRing = geodata_cast<GeoDataLinearRing>(*multiIter)) {
                                     if (linearRing->contains(clickedPoint)) {
                                         selectedPlacemarks.push_back(placemark);
                                         break;
                                     }
                                 }
                             }
                         }
                     }
                 }
             }
         }
     }
 
     Q_EMIT highlightedPlacemarksChanged(selectedPlacemarks);
 }
 
 void GeometryLayer::setLevelTagDebugModeEnabled(bool enabled)
 {
     if (d->m_levelTagDebugModeEnabled != enabled) {
         d->m_levelTagDebugModeEnabled = enabled;
         Q_EMIT repaintNeeded();
     }
 }
 
 bool GeometryLayer::levelTagDebugModeEnabled() const
 {
     return d->m_levelTagDebugModeEnabled;
 }
 
 void GeometryLayer::setDebugLevelTag(int level)
 {
     if (d->m_debugLevelTag != level) {
         d->m_debugLevelTag = level;
         Q_EMIT repaintNeeded();
     }
 }
 
 int GeometryLayer::debugLevelTag() const
 {
     return d->m_debugLevelTag;
 }
 
 }
 
 #include "moc_GeometryLayer.cpp"