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#include "qcheapruler.hpp"
#include <QString>
QCheapRuler::QCheapRuler()
{
//set the default current position
// m_currentPosition = QGeoCoordinate(36.136261, -115.151254);
m_currentPosition = QGeoCoordinate(35.692396, 139.691102);
}
QCheapRuler::~QCheapRuler()
{
}
//get route distance
double QCheapRuler::distance() const
{
return m_distance;
}
//get current distance along the route
double QCheapRuler::currentDistance() const
{
return m_currentDistance;
}
//set current position below the coordinate info from navigation service
void QCheapRuler::setCurrentPosition(double latitude, double longitude)
{
//set coordinate info and notify the changes when latitude or longitude info has changed
if((m_currentPosition.latitude() != latitude)
||(m_currentPosition.longitude() != longitude))
{
m_currentPosition.setLatitude(latitude);
m_currentPosition.setLongitude(longitude);
emit currentPositionChanged();
}
}
void QCheapRuler::setCurrentDistance(double distance)
{
//set current distance info and notify the changes when the info has changed
//but it will not send notify when it start or stop demo
if((m_currentDistance != distance)
&&(distance != 0.0))
{
m_currentDistance = distance;
emit currentDistanceChanged();
}
}
//get current position(coordinate)
QGeoCoordinate QCheapRuler::currentPosition() const
{
return m_currentPosition;
}
QJSValue QCheapRuler::path() const
{
// Should neveer be called.
return QJSValue();
}
//set route path and get the total distance
void QCheapRuler::setPath(const QJSValue &value)
{
if (!value.isArray())
return;
m_path.clear();
quint32 length = value.property(QStringLiteral("length")).toUInt();
//push back the coordinate info along the route
for (unsigned i = 0; i < length; ++i) {
auto property = value.property(i);
cr::point coordinate = { 0., 0. };
if (property.hasProperty(QStringLiteral("latitude")))
coordinate.y = property.property(QStringLiteral("latitude")).toNumber();
if (property.hasProperty(QStringLiteral("longitude")))
coordinate.x = property.property(QStringLiteral("longitude")).toNumber();
m_path.push_back(coordinate);
}
//count the total distance along the route
double distance = ruler().lineDistance(m_path);
if (m_distance != distance) {
m_distance = distance;
}
emit pathChanged();
}
//init the route and postion info when start in the first time.(can be called by qml)
void QCheapRuler::initRouteInfo()
{
// TODO: this may be needed to get initial route info
}
//init the CheapRuler class
cr::CheapRuler QCheapRuler::ruler() const
{
if (m_path.empty()) {
return cr::CheapRuler(0., cr::CheapRuler::Kilometers);
} else {
return cr::CheapRuler(m_currentPosition.latitude(), cr::CheapRuler::Kilometers);
}
}
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