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// SPDX-License-Identifier: GPL-2.0
#include <QApplication>
#include <QClipboard>
#include <QDebug>
#include <QVector>
#include "qmlmapwidgethelper.h"
#include "core/divesite.h"
#include "core/qthelper.h"
#include "qt-models/maplocationmodel.h"
#include "qt-models/divelocationmodel.h"
#ifndef SUBSURFACE_MOBILE
#include "qt-models/filtermodels.h"
#endif
#define SMALL_CIRCLE_RADIUS_PX 26.0
MapWidgetHelper::MapWidgetHelper(QObject *parent) : QObject(parent)
{
m_mapLocationModel = new MapLocationModel(this);
m_smallCircleRadius = SMALL_CIRCLE_RADIUS_PX;
m_map = nullptr;
m_editMode = false;
connect(m_mapLocationModel, SIGNAL(selectedLocationChanged(MapLocation *)),
this, SLOT(selectedLocationChanged(MapLocation *)));
connect(&diveListNotifier, &DiveListNotifier::diveSiteChanged, this, &MapWidgetHelper::diveSiteChanged);
}
QGeoCoordinate MapWidgetHelper::getCoordinates(struct dive_site *ds)
{
if (!dive_site_has_gps_location(ds))
return QGeoCoordinate(0.0, 0.0);
return QGeoCoordinate(ds->location.lat.udeg * 0.000001, ds->location.lon.udeg * 0.000001);
}
void MapWidgetHelper::centerOnDiveSite(struct dive_site *ds)
{
if (!dive_site_has_gps_location(ds)) {
// dive site with no GPS
m_mapLocationModel->setSelected(ds, false);
QMetaObject::invokeMethod(m_map, "deselectMapLocation");
} else {
// dive site with GPS
m_mapLocationModel->setSelected(ds, false);
QGeoCoordinate dsCoord (ds->location.lat.udeg * 0.000001, ds->location.lon.udeg * 0.000001);
QMetaObject::invokeMethod(m_map, "centerOnCoordinate", Q_ARG(QVariant, QVariant::fromValue(dsCoord)));
}
}
void MapWidgetHelper::centerOnSelectedDiveSite()
{
QVector<struct dive_site *> selDS = m_mapLocationModel->selectedDs();
if (selDS.isEmpty()) {
// no selected dives with GPS coordinates
QMetaObject::invokeMethod(m_map, "deselectMapLocation");
return;
}
// find the most top-left and bottom-right dive sites on the map coordinate system.
qreal minLat = 0.0, minLon = 0.0, maxLat = 0.0, maxLon = 0.0;
int count = 0;
for(struct dive_site *dss: selDS) {
if (!has_location(&dss->location))
continue;
qreal lat = dss->location.lat.udeg * 0.000001;
qreal lon = dss->location.lon.udeg * 0.000001;
if (++count == 1) {
minLat = maxLat = lat;
minLon = maxLon = lon;
continue;
}
if (lat < minLat)
minLat = lat;
else if (lat > maxLat)
maxLat = lat;
if (lon < minLon)
minLon = lon;
else if (lon > maxLon)
maxLon = lon;
}
// Pass coordinates to QML, either as a point or as a rectangle.
// If we didn't find any coordinates, do nothing.
if (count == 1) {
QGeoCoordinate dsCoord (selDS[0]->location.lat.udeg * 0.000001, selDS[0]->location.lon.udeg * 0.000001);
QMetaObject::invokeMethod(m_map, "centerOnCoordinate", Q_ARG(QVariant, QVariant::fromValue(dsCoord)));
} else if (count > 1) {
QGeoCoordinate coordTopLeft(minLat, minLon);
QGeoCoordinate coordBottomRight(maxLat, maxLon);
QGeoCoordinate coordCenter(minLat + (maxLat - minLat) * 0.5, minLon + (maxLon - minLon) * 0.5);
QMetaObject::invokeMethod(m_map, "centerOnRectangle",
Q_ARG(QVariant, QVariant::fromValue(coordTopLeft)),
Q_ARG(QVariant, QVariant::fromValue(coordBottomRight)),
Q_ARG(QVariant, QVariant::fromValue(coordCenter)));
}
}
void MapWidgetHelper::reloadMapLocations()
{
#ifndef SUBSURFACE_MOBILE
// The filter being set to dive site is the signal that we are in dive site edit mode.
// This is the case when either the dive site edit tab or the dive site list tab are active.
if (MultiFilterSortModel::instance()->diveSiteMode())
enterEditMode();
else
exitEditMode();
#endif
m_mapLocationModel->reload(m_map);
}
void MapWidgetHelper::selectedLocationChanged(MapLocation *location)
{
int idx;
struct dive *dive;
QList<int> selectedDiveIds;
QGeoCoordinate locationCoord = location->coordinate();
for_each_dive (idx, dive) {
struct dive_site *ds = get_dive_site_for_dive(dive);
if (!dive_site_has_gps_location(ds))
continue;
#ifndef SUBSURFACE_MOBILE
const qreal latitude = ds->location.lat.udeg * 0.000001;
const qreal longitude = ds->location.lon.udeg * 0.000001;
QGeoCoordinate dsCoord(latitude, longitude);
if (locationCoord.distanceTo(dsCoord) < m_smallCircleRadius)
selectedDiveIds.append(idx);
}
#else // the mobile version doesn't support multi-dive selection
if (ds == location->divesite())
selectedDiveIds.append(dive->id); // use id here instead of index
}
int last; // get latest dive chronologically
if (!selectedDiveIds.isEmpty()) {
last = selectedDiveIds.last();
selectedDiveIds.clear();
selectedDiveIds.append(last);
}
#endif
emit selectedDivesChanged(selectedDiveIds);
}
void MapWidgetHelper::selectVisibleLocations()
{
int idx;
struct dive *dive;
QList<int> selectedDiveIds;
for_each_dive (idx, dive) {
struct dive_site *ds = get_dive_site_for_dive(dive);
if (!dive_site_has_gps_location(ds))
continue;
const qreal latitude = ds->location.lat.udeg * 0.000001;
const qreal longitude = ds->location.lon.udeg * 0.000001;
QGeoCoordinate dsCoord(latitude, longitude);
QPointF point;
QMetaObject::invokeMethod(m_map, "fromCoordinate", Q_RETURN_ARG(QPointF, point),
Q_ARG(QGeoCoordinate, dsCoord));
if (!qIsNaN(point.x()))
#ifndef SUBSURFACE_MOBILE // indexes on desktop
selectedDiveIds.append(idx);
}
#else // use id on mobile instead of index
selectedDiveIds.append(dive->id);
}
int last; // get latest dive chronologically
if (!selectedDiveIds.isEmpty()) {
last = selectedDiveIds.last();
selectedDiveIds.clear();
selectedDiveIds.append(last);
}
#endif
emit selectedDivesChanged(selectedDiveIds);
}
/*
* Based on a 2D Map widget circle with center "coord" and radius SMALL_CIRCLE_RADIUS_PX,
* obtain a "small circle" with radius m_smallCircleRadius in meters:
* https://en.wikipedia.org/wiki/Circle_of_a_sphere
*
* The idea behind this circle is to be able to select multiple nearby dives, when clicking on
* the map. This code can be in QML, but it is in C++ instead for performance reasons.
*
* This can be made faster with an exponential regression [a * exp(b * x)], with a pretty
* decent R-squared, but it becomes bound to map provider zoom level mappings and the
* SMALL_CIRCLE_RADIUS_PX value, which makes the code hard to maintain.
*/
void MapWidgetHelper::calculateSmallCircleRadius(QGeoCoordinate coord)
{
QPointF point;
QMetaObject::invokeMethod(m_map, "fromCoordinate", Q_RETURN_ARG(QPointF, point),
Q_ARG(QGeoCoordinate, coord));
QPointF point2(point.x() + SMALL_CIRCLE_RADIUS_PX, point.y());
QGeoCoordinate coord2;
QMetaObject::invokeMethod(m_map, "toCoordinate", Q_RETURN_ARG(QGeoCoordinate, coord2),
Q_ARG(QPointF, point2));
m_smallCircleRadius = coord2.distanceTo(coord);
}
static location_t mk_location(QGeoCoordinate coord)
{
return create_location(coord.latitude(), coord.longitude());
}
void MapWidgetHelper::copyToClipboardCoordinates(QGeoCoordinate coord, bool formatTraditional)
{
bool savep = prefs.coordinates_traditional;
prefs.coordinates_traditional = formatTraditional;
location_t location = mk_location(coord);
QApplication::clipboard()->setText(printGPSCoords(&location), QClipboard::Clipboard);
prefs.coordinates_traditional = savep;
}
void MapWidgetHelper::updateCurrentDiveSiteCoordinatesFromMap(struct dive_site *ds, QGeoCoordinate coord)
{
MapLocation *loc = m_mapLocationModel->getMapLocation(ds);
if (loc)
loc->setCoordinate(coord);
location_t location = mk_location(coord);
emit coordinatesChanged(ds, location);
}
void MapWidgetHelper::diveSiteChanged(struct dive_site *ds, int field)
{
centerOnDiveSite(ds);
}
void MapWidgetHelper::exitEditMode()
{
if (!m_editMode)
return;
m_editMode = false;
emit editModeChanged();
}
void MapWidgetHelper::enterEditMode()
{
if (m_editMode)
return;
m_editMode = true;
emit editModeChanged();
}
QString MapWidgetHelper::pluginObject()
{
QString lang = uiLanguage(NULL).replace('_', '-');
QString cacheFolder = QString(system_default_directory()).append("/googlemaps").replace("\\", "/");
return QStringLiteral("import QtQuick 2.0;"
"import QtLocation 5.3;"
"Plugin {"
" id: mapPlugin;"
" name: 'googlemaps';"
" PluginParameter { name: 'googlemaps.maps.language'; value: '%1' }"
" PluginParameter { name: 'googlemaps.cachefolder'; value: '%2' }"
" Component.onCompleted: {"
" if (availableServiceProviders.indexOf(name) === -1) {"
" console.warn('MapWidget.qml: cannot find a plugin named: ' + name);"
" }"
" }"
"}").arg(lang, cacheFolder);
}
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