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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