本文整理汇总了C++中GeoDataDocument::first方法的典型用法代码示例。如果您正苦于以下问题：C++ GeoDataDocument::first方法的具体用法？C++ GeoDataDocument::first怎么用？C++ GeoDataDocument::first使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类GeoDataDocument的用法示例。
在下文中一共展示了GeoDataDocument::first方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: loadRoute
void RoutingManagerPrivate::loadRoute(const QString &filename)
{
QFile file( filename );
if ( !file.open( QIODevice::ReadOnly ) ) {
mDebug() << "Can not read route from " << file.fileName();
return;
}
GeoDataParser parser( GeoData_KML );
if ( !parser.read( &file ) ) {
mDebug() << "Could not parse file: " << parser.errorString();
return;
}
GeoDocument *doc = parser.releaseDocument();
file.close();
bool loaded = false;
GeoDataDocument* container = dynamic_cast<GeoDataDocument*>( doc );
if ( container && container->size() > 0 ) {
GeoDataFolder* viaPoints = dynamic_cast<GeoDataFolder*>( &container->first() );
if ( viaPoints ) {
loaded = true;
QVector<GeoDataPlacemark*> placemarks = viaPoints->placemarkList();
for( int i=0; i<placemarks.size(); ++i ) {
if ( i < m_routeRequest.size() ) {
m_routeRequest[i] = *placemarks[i];
} else {
m_routeRequest.append( *placemarks[i] );
}
}
// clear unneeded via points
const int viaPoints_needed = placemarks.size();
for ( int i = m_routeRequest.size(); i > viaPoints_needed; --i ) {
m_routeRequest.remove( viaPoints_needed );
}
} else {
mDebug() << "Expected a GeoDataDocument with at least one child, didn't get one though";
}
}
if ( container && container->size() == 2 ) {
GeoDataDocument* route = dynamic_cast<GeoDataDocument*>(&container->last());
if ( route ) {
loaded = true;
m_alternativeRoutesModel.clear();
m_alternativeRoutesModel.addRoute( route, AlternativeRoutesModel::Instant );
m_alternativeRoutesModel.setCurrentRoute( 0 );
m_state = RoutingManager::Retrieved;
emit q->stateChanged( m_state );
emit q->routeRetrieved( route );
} else {
mDebug() << "Expected a GeoDataDocument child, didn't get one though";
}
}
if ( !loaded ) {
mDebug() << "File " << filename << " is not a valid Marble route .kml file";
if ( container ) {
m_treeModel->addDocument( container );
}
}
}