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++ // Copyright (C) 2022 The Qt Company Ltd.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
++ // Qt-Security score:significant reason:default
++
++ #include "qdeclarativegeomapitembase_p.h"
++ #include "qgeocameradata_p.h"
++
++ #include <QtQml/QQmlInfo>
++ #include <QtQuick/QSGOpacityNode>
++
++ #include <QtQuick/private/qquickmousearea_p.h>
++ #include <QtQuick/private/qquickitem_p.h>
++ #include <QtPositioning/private/qdoublevector2d_p.h>
++ #include <QtLocation/private/qgeomap_p.h>
++ #include <QtLocation/private/qgeoprojection_p.h>
++
++ #include <QtQuickShapes/private/qquickshape_p_p.h>
++
++ QT_BEGIN_NAMESPACE
++
++ QDeclarativeGeoMapItemBase::QDeclarativeGeoMapItemBase(QQuickItem *parent)
++ : QQuickItem(parent)
++ {
++ connect(this, &QDeclarativeGeoMapItemBase::childrenChanged,
++ this, &QDeclarativeGeoMapItemBase::afterChildrenChanged);
++ // Changing opacity on a mapItemGroup should affect also the opacity on the children.
++ // This must be notified to plugins, if they are to render the item.
++ connect(this, &QQuickItem::opacityChanged, this, &QDeclarativeGeoMapItemBase::mapItemOpacityChanged);
++ }
++
++ QDeclarativeGeoMapItemBase::~QDeclarativeGeoMapItemBase()
++ {
++ disconnect(this, &QDeclarativeGeoMapItemBase::childrenChanged,
++ this, &QDeclarativeGeoMapItemBase::afterChildrenChanged);
++ if (quickMap_)
++ quickMap_->removeMapItem(this);
++ }
++
++ /*!
++ \internal
++ */
++ void QDeclarativeGeoMapItemBase::afterChildrenChanged()
++ {
++ const QList<QQuickItem *> kids = childItems();
++ if (kids.size() > 0) {
++ bool printedWarning = false;
++ for (auto *i : kids) {
++ if (i->flags() & QQuickItem::ItemHasContents
++ && !qobject_cast<QQuickMouseArea *>(i)
++ && i->objectName() != QStringLiteral("_qt_map_item_shape"))
++ {
++ if (!printedWarning) {
++ qmlWarning(this) << "Geographic map items do not support child items";
++ printedWarning = true;
++ }
++
++ qmlWarning(i) << "deleting this child";
++ i->deleteLater();
++ }
++ }
++ }
++ }
++
++ /*!
++ \internal
++ */
++ void QDeclarativeGeoMapItemBase::setMap(QDeclarativeGeoMap *quickMap, QGeoMap *map)
++ {
++ if (quickMap == quickMap_)
++ return;
++ if (quickMap && quickMap_)
++ return; // don't allow association to more than one map
++
++ quickMap_ = quickMap;
++ map_ = map;
++
++ if (map_ && quickMap_) {
++ // For performance reasons we're not connecting map_'s and quickMap_'s signals to this.
++ // Rather, the handling of cameraDataChanged, visibleAreaChanged, heightChanged and widthChanged is done explicitly in QDeclarativeGeoMap by directly calling methods on the items.
++ // See QTBUG-76950
++ lastMapSize_ = QSizeF(quickMap_->width(), quickMap_->height());
++ lastCameraData_ = map_->cameraData();
++ }
++ }
++
++ /*!
++ \internal
++ */
++ void QDeclarativeGeoMapItemBase::baseCameraDataChanged(const QGeoCameraData &cameraData)
++ {
++ QGeoMapViewportChangeEvent evt;
++ evt.cameraData = cameraData;
++ evt.mapSize = QSizeF(quickMap_->width(), quickMap_->height());
++
++ if (evt.mapSize != lastMapSize_)
++ evt.mapSizeChanged = true;
++
++ if (cameraData.bearing() != lastCameraData_.bearing())
++ evt.bearingChanged = true;
++ if (cameraData.center() != lastCameraData_.center())
++ evt.centerChanged = true;
++ if (cameraData.roll() != lastCameraData_.roll())
++ evt.rollChanged = true;
++ if (cameraData.tilt() != lastCameraData_.tilt())
++ evt.tiltChanged = true;
++ if (cameraData.zoomLevel() != lastCameraData_.zoomLevel())
++ evt.zoomLevelChanged = true;
++
++ lastMapSize_ = evt.mapSize;
++ lastCameraData_ = cameraData;
++
++ afterViewportChanged(evt);
++ }
++
++ void QDeclarativeGeoMapItemBase::visibleAreaChanged()
++ {
++ QGeoMapViewportChangeEvent evt;
++ evt.mapSize = QSizeF(quickMap_->width(), quickMap_->height());
++ afterViewportChanged(evt);
++ }
++
++ /*!
++ \internal
++ */
++ void QDeclarativeGeoMapItemBase::setPositionOnMap(const QGeoCoordinate &coordinate, const QPointF &offset)
++ {
++ if (!map_ || !quickMap_)
++ return;
++
++ QDoubleVector2D pos;
++ if (map()->geoProjection().projectionType() == QGeoProjection::ProjectionWebMercator) {
++ const QGeoProjectionWebMercator &p = static_cast<const QGeoProjectionWebMercator&>(map()->geoProjection());
++ QDoubleVector2D wrappedProjection = p.geoToWrappedMapProjection(coordinate);
++ if (!p.isProjectable(wrappedProjection))
++ return;
++ pos = p.wrappedMapProjectionToItemPosition(wrappedProjection);
++ } else {
++ pos = map()->geoProjection().coordinateToItemPosition(coordinate, false);
++ if (qIsNaN(pos.x()))
++ return;
++ }
++
++ QPointF topLeft = pos.toPointF() - offset;
++
++ setPosition(topLeft);
++ }
++
++ bool QDeclarativeGeoMapItemBase::autoFadeIn() const
++ {
++ return m_autoFadeIn;
++ }
++
++ static const double opacityRampMin = 1.5;
++ static const double opacityRampMax = 2.5;
++
++ void QDeclarativeGeoMapItemBase::setAutoFadeIn(bool fadeIn)
++ {
++ if (fadeIn == m_autoFadeIn)
++ return;
++ m_autoFadeIn = fadeIn;
++ if (quickMap_ && quickMap_->zoomLevel() < opacityRampMax)
++ polishAndUpdate();
++ }
++
++ QLocation::ReferenceSurface QDeclarativeGeoMapItemBase::referenceSurface() const
++ {
++ return m_referenceSurface;
++ }
++
++ void QDeclarativeGeoMapItemBase::setReferenceSurface(QLocation::ReferenceSurface referenceSurface)
++ {
++ if (referenceSurface == m_referenceSurface)
++ return;
++ m_referenceSurface = referenceSurface;
++ emit referenceSurfaceChanged();
++ updatePolish();
++ }
++
++ int QDeclarativeGeoMapItemBase::lodThreshold() const
++ {
++ return m_lodThreshold;
++ }
++
++ void QDeclarativeGeoMapItemBase::setLodThreshold(int lt)
++ {
++ if (lt == m_lodThreshold)
++ return;
++ m_lodThreshold = lt;
++ update();
++ }
++
++ /*!
++ \internal
++
++ This returns the zoom level to be used when requesting the LOD.
++ Essentially it clamps to m_lodThreshold, and if above, it selects
++ a ZL higher than the maximum LODable level.
++ */
++ unsigned int QDeclarativeGeoMapItemBase::zoomForLOD(int zoom) const
++ {
++ if (zoom >= m_lodThreshold)
++ return 30; // some arbitrarily large zoom
++ return uint(zoom);
++ }
++
++ /*!
++ \internal
++ */
++ float QDeclarativeGeoMapItemBase::zoomLevelOpacity() const
++ {
++ if (!m_autoFadeIn) // Consider skipping the opacity node instead.
++ return 1.0;
++ else if (quickMap_->zoomLevel() > opacityRampMax)
++ return 1.0;
++ else if (quickMap_->zoomLevel() > opacityRampMin)
++ return quickMap_->zoomLevel() - opacityRampMin;
++ else
++ return 0.0;
++ }
++
++ void QDeclarativeGeoMapItemBase::setShapeTriangulationScale(QQuickShape *shape, qreal maxCoord) const
++ {
++ const qreal zoom = qMax(0.01, quickMap_->zoomLevel());
++ qreal scale = 1 / zoom;
++
++ // cater also for QTriangulator's 65536 coordinate limit due to the fixed point math
++ qint64 coord = qint64(maxCoord);
++ const qint64 COORD_LIMIT = (1 << 21) / 32; // 65536 (where 32 is Q_FIXED_POINT_SCALE)
++ while (coord > COORD_LIMIT) {
++ coord /= COORD_LIMIT;
++ scale /= COORD_LIMIT;
++ }
++
++ QQuickShapePrivate::get(shape)->triangulationScale = scale;
++ }
++
++ /*!
++ \internal
++ */
++ QSGNode *QDeclarativeGeoMapItemBase::updatePaintNode(QSGNode *oldNode, UpdatePaintNodeData *pd)
++ {
++ if (!map_ || !quickMap_ || map_->supportedMapItemTypes() & itemType()) {
++ if (oldNode)
++ delete oldNode;
++ oldNode = nullptr;
++ return nullptr;
++ }
++
++ QSGOpacityNode *opn = static_cast<QSGOpacityNode *>(oldNode);
++ if (!opn)
++ opn = new QSGOpacityNode();
++
++ opn->setOpacity(zoomLevelOpacity());
++
++ QSGNode *oldN = opn->childCount() ? opn->firstChild() : 0;
++ opn->removeAllChildNodes();
++ if (opn->opacity() > 0.0) {
++ QSGNode *n = this->updateMapItemPaintNode(oldN, pd);
++ if (n)
++ opn->appendChildNode(n);
++ } else {
++ delete oldN;
++ }
++
++ return opn;
++ }
++
++ /*!
++ \internal
++ */
++ QSGNode *QDeclarativeGeoMapItemBase::updateMapItemPaintNode(QSGNode *oldNode, UpdatePaintNodeData *)
++ {
++ delete oldNode;
++ return nullptr;
++ }
++
++ /*!
++ \internal
++
++ The actual combined opacity of the item. Needed by custom renderer to look like
++ the scene-graph one.
++ */
++ qreal QDeclarativeGeoMapItemBase::mapItemOpacity() const
++ {
++ if (parentGroup_)
++ return parentGroup_->mapItemOpacity() * opacity();
++ return opacity();
++ }
++
++ void QDeclarativeGeoMapItemBase::setParentGroup(QDeclarativeGeoMapItemGroup &parentGroup)
++ {
++ parentGroup_ = &parentGroup;
++ if (parentGroup_) {
++ connect(parentGroup_, &QDeclarativeGeoMapItemGroup::mapItemOpacityChanged,
++ this, &QDeclarativeGeoMapItemBase::mapItemOpacityChanged);
++ }
++ }
++
++ bool QDeclarativeGeoMapItemBase::isPolishScheduled() const
++ {
++ return QQuickItemPrivate::get(this)->polishScheduled;
++ }
++
++ void QDeclarativeGeoMapItemBase::polishAndUpdate()
++ {
++ polish();
++ update();
++ }
++
++ QT_END_NAMESPACE