GeoDataDocument *TileLoader::loadTileVectorData( GeoSceneVectorTileDataset const *textureLayer, TileId const & tileId, DownloadUsage const usage )
{
// FIXME: textureLayer->fileFormat() could be used in the future for use just that parser, instead of all available parsers
QString const fileName = tileFileName( textureLayer, tileId );
TileStatus status = tileStatus( textureLayer, tileId );
if ( status != Missing ) {
// check if an update should be triggered
if ( status == Available ) {
mDebug() << Q_FUNC_INFO << tileId << "StateUptodate";
} else {
Q_ASSERT( status == Expired );
mDebug() << Q_FUNC_INFO << tileId << "StateExpired";
triggerDownload( textureLayer, tileId, usage );
}
QFile file ( fileName );
if ( file.exists() ) {
// File is ready, so parse and return the vector data in any case
GeoDataDocument* document = openVectorFile(fileName);
if (document) {
return document;
}
}
}
// tile was not locally available => trigger download
triggerDownload( textureLayer, tileId, usage );
return nullptr;
}
// This method triggers a download of the given tile (without checking
// expiration). It is called by upper layer (StackedTileLoader) when the tile
// that should be reloaded is currently loaded in memory.
//
// post condition
// - download is triggered
void TileLoader::downloadTile( GeoSceneTiled const *textureLayer, TileId const &tileId, DownloadUsage const usage )
{
triggerDownload( textureLayer, tileId, usage );
}
// This method triggers a download of the given tile (without checking
// expiration). It is called by upper layer (StackedTileLoader) when the tile
// that should be reloaded is currently loaded in memory.
//
// post condition
// - download is triggered
void TileLoader::downloadTile( GeoSceneTileDataset const *tileData, TileId const &tileId, DownloadUsage const usage )
{
triggerDownload( tileData, tileId, usage );
}
