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/*
* Copyright 2013 Thomas Schöps
* Copyright 2014, 2016 Kai Pastor
*
* This file is part of OpenOrienteering.
*
* OpenOrienteering is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* OpenOrienteering is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with OpenOrienteering. If not, see <http://www.gnu.org/licenses/>.
*/
#include "gps_display.h"
#if defined(QT_POSITIONING_LIB)
# include <QtPositioning/QGeoPositionInfoSource>
#endif
#if defined(Q_OS_ANDROID)
# include <jni.h>
# include <QtAndroidExtras/QAndroidJniObject>
#endif
#include <qmath.h>
#include <QPainter>
#include <QTimer>
#include "core/georeferencing.h"
#include "compass.h"
#include "map_widget.h"
#include "util.h"
#include "util/backports.h"
GPSDisplay::GPSDisplay(MapWidget* widget, const Georeferencing& georeferencing, QObject* parent)
: QObject(parent)
, widget(widget)
, georeferencing(georeferencing)
, source(nullptr)
, tracking_lost(false)
, has_valid_position(false)
, gps_updated(false)
, visible(false)
, distance_rings_enabled(false)
, heading_indicator_enabled(false)
{
#if defined(QT_POSITIONING_LIB)
source = QGeoPositionInfoSource::createDefaultSource(this);
if (!source)
{
qDebug("Cannot create QGeoPositionInfoSource!");
return;
}
source->setPreferredPositioningMethods(QGeoPositionInfoSource::SatellitePositioningMethods);
source->setUpdateInterval(1000);
connect(source, &QGeoPositionInfoSource::positionUpdated, this, &GPSDisplay::positionUpdated, Qt::QueuedConnection);
connect(source, QOverload<QGeoPositionInfoSource::Error>::of(&QGeoPositionInfoSource::error), this, &GPSDisplay::error);
connect(source, &QGeoPositionInfoSource::updateTimeout, this, &GPSDisplay::updateTimeout);
#elif defined(MAPPER_DEVELOPMENT_BUILD)
// DEBUG
QTimer* debug_timer = new QTimer(this);
connect(debug_timer, SIGNAL(timeout()), this, SLOT(debugPositionUpdate()));
debug_timer->start(500);
visible = true;
#endif
widget->setGPSDisplay(this);
}
GPSDisplay::~GPSDisplay()
{
stopUpdates();
widget->setGPSDisplay(nullptr);
}
bool GPSDisplay::checkGPSEnabled()
{
#if defined(Q_OS_ANDROID)
static bool translation_initialized = false;
if (!translation_initialized)
{
QAndroidJniObject gps_disabled_string = QAndroidJniObject::fromString(tr("GPS is disabled in the device settings. Open settings now?"));
QAndroidJniObject yes_string = QAndroidJniObject::fromString(tr("Yes"));
QAndroidJniObject no_string = QAndroidJniObject::fromString(tr("No"));
QAndroidJniObject::callStaticMethod<void>(
"org/openorienteering/mapper/MapperActivity",
"setTranslatableStrings",
"(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)V",
yes_string.object<jstring>(),
no_string.object<jstring>(),
gps_disabled_string.object<jstring>());
translation_initialized = true;
}
QAndroidJniObject::callStaticMethod<void>("org/openorienteering/mapper/MapperActivity",
"checkGPSEnabled",
"()V");
#endif
return true;
}
void GPSDisplay::startUpdates()
{
#if defined(QT_POSITIONING_LIB)
if (source)
{
checkGPSEnabled();
source->startUpdates();
}
#endif
}
void GPSDisplay::stopUpdates()
{
#if defined(QT_POSITIONING_LIB)
if (source)
{
source->stopUpdates();
has_valid_position = false;
}
#endif
}
void GPSDisplay::setVisible(bool visible)
{
if (this->visible != visible)
{
this->visible = visible;
updateMapWidget();
}
}
void GPSDisplay::enableDistanceRings(bool enable)
{
distance_rings_enabled = enable;
if (visible && has_valid_position)
updateMapWidget();
}
void GPSDisplay::enableHeadingIndicator(bool enable)
{
if (enable && ! heading_indicator_enabled)
Compass::getInstance().startUsage();
else if (! enable && heading_indicator_enabled)
Compass::getInstance().stopUsage();
heading_indicator_enabled = enable;
}
void GPSDisplay::paint(QPainter* painter)
{
if (!visible || !has_valid_position)
return;
// Get GPS position on map widget
bool ok = true;
MapCoordF gps_coord = calcLatestGPSCoord(ok);
if (!ok)
return;
QPointF gps_pos = widget->mapToViewport(gps_coord);
// Draw center dot or arrow
painter->setPen(Qt::NoPen);
painter->setBrush(QBrush(tracking_lost ? Qt::gray : Qt::red));
if (heading_indicator_enabled)
{
const qreal base_length_unit = Util::mmToPixelLogical(0.6);
// For heading indicator, get azimuth from compass and calculate
// the relative rotation to map view rotation, clockwise.
qreal heading_rotation_deg = Compass::getInstance().getCurrentAzimuth() + qRadiansToDegrees(widget->getMapView()->getRotation());
painter->save();
painter->translate(gps_pos);
painter->rotate(heading_rotation_deg);
// Draw arrow
static const QPointF arrow_points[4] = {
QPointF(0, -2.5 * base_length_unit),
QPointF(base_length_unit, base_length_unit),
QPointF(0, 0),
QPointF(base_length_unit, base_length_unit)
};
painter->drawPolygon(arrow_points, 4);
// Draw heading line
painter->setPen(QPen(Qt::gray, base_length_unit / 6));
painter->setBrush(Qt::NoBrush);
painter->drawLine(QPointF(0, 0), QPointF(0, -10000 * base_length_unit)); // very long
painter->restore();
}
else
{
const qreal dot_radius = Util::mmToPixelLogical(0.5f);
painter->drawEllipse(gps_pos, dot_radius, dot_radius);
}
auto meters_to_pixels = widget->getMapView()->lengthToPixel(qreal(1000000) / georeferencing.getScaleDenominator());
// Draw distance circles
if (distance_rings_enabled)
{
const int num_distance_rings = 2;
const qreal distance_ring_radius_meters = 10;
auto distance_ring_radius_pixels = distance_ring_radius_meters * meters_to_pixels;
painter->setPen(QPen(Qt::gray, Util::mmToPixelLogical(0.1)));
painter->setBrush(Qt::NoBrush);
auto radius = distance_ring_radius_pixels;
for (int i = 0; i < num_distance_rings; ++i)
{
painter->drawEllipse(gps_pos, radius, radius);
radius += distance_ring_radius_pixels;
}
}
// Draw accuracy circle
if (latest_gps_coord_accuracy >= 0)
{
auto accuracy_pixels = latest_gps_coord_accuracy * meters_to_pixels;
painter->setPen(QPen(tracking_lost ? Qt::gray : Qt::red, Util::mmToPixelLogical(0.2f)));
painter->setBrush(Qt::NoBrush);
painter->drawEllipse(gps_pos, accuracy_pixels, accuracy_pixels);
}
}
#if defined(QT_POSITIONING_LIB)
void GPSDisplay::positionUpdated(const QGeoPositionInfo& info)
{
Q_UNUSED(info);
gps_updated = true;
tracking_lost = false;
has_valid_position = true;
bool ok = false;
calcLatestGPSCoord(ok);
if (ok)
{
emit mapPositionUpdated(latest_gps_coord, latest_gps_coord_accuracy);
emit latLonUpdated(
info.coordinate().latitude(),
info.coordinate().longitude(),
(info.coordinate().type() == QGeoCoordinate::Coordinate3D) ? info.coordinate().altitude() : -9999,
latest_gps_coord_accuracy
);
}
updateMapWidget();
}
void GPSDisplay::error(QGeoPositionInfoSource::Error positioningError)
{
if (positioningError != QGeoPositionInfoSource::NoError)
{
if (!tracking_lost)
{
tracking_lost = true;
emit positionUpdatesInterrupted();
updateMapWidget();
}
}
}
void GPSDisplay::updateTimeout()
{
// Lost satellite fix
if (!tracking_lost)
{
tracking_lost = true;
emit positionUpdatesInterrupted();
updateMapWidget();
}
}
#endif
void GPSDisplay::debugPositionUpdate()
{
#if MAPPER_DEVELOPMENT_BUILD
if (!visible)
return;
QTime now = QTime::currentTime();
float offset = now.msecsSinceStartOfDay() / (float)(10 * 1000);
float accuracy = 12 + 7 * qSin(2 + offset);
float altitude = 400 + 10 * qSin(1 + 0.1f * offset);
MapCoordF coord(30 * qSin(0.5f * offset), 30 * qCos(0.53f * offset));
emit mapPositionUpdated(coord, accuracy);
if (georeferencing.isValid() && ! georeferencing.isLocal())
{
bool ok;
LatLon latLon = georeferencing.toGeographicCoords(coord, &ok);
if (ok)
{
emit latLonUpdated(latLon.latitude(), latLon.longitude(), altitude, accuracy);
}
}
gps_updated = true;
tracking_lost = false;
has_valid_position = true;
latest_gps_coord = coord;
latest_gps_coord_accuracy = accuracy;
updateMapWidget();
#endif
}
MapCoordF GPSDisplay::calcLatestGPSCoord(bool& ok)
{
#if defined(QT_POSITIONING_LIB)
if (!has_valid_position)
{
ok = false;
return latest_gps_coord;
}
if (!gps_updated)
{
ok = true;
return latest_gps_coord;
}
latest_pos_info = source->lastKnownPosition(true);
latest_gps_coord_accuracy = latest_pos_info.hasAttribute(QGeoPositionInfo::HorizontalAccuracy) ? latest_pos_info.attribute(QGeoPositionInfo::HorizontalAccuracy) : -1;
QGeoCoordinate qgeo_coord = latest_pos_info.coordinate();
if (!qgeo_coord.isValid())
{
ok = false;
return latest_gps_coord;
}
LatLon latlon(qgeo_coord.latitude(), qgeo_coord.longitude());
latest_gps_coord = georeferencing.toMapCoordF(latlon, &ok);
if (!ok)
{
qDebug("GPSDisplay::calcLatestGPSCoord(): Cannot convert LatLon to MapCoordF!");
return latest_gps_coord;
}
gps_updated = false;
ok = true;
#else
ok = has_valid_position;
#endif
return latest_gps_coord;
}
void GPSDisplay::updateMapWidget()
{
// TODO: Limit update region to union of old and new bounding rect
widget->update();
}
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