void writeGetTile( QgsServerInterface *serverIface, const QgsProject *project,
const QString &version, const QgsServerRequest &request,
QgsServerResponse &response )
{
Q_UNUSED( version );
const QgsWmtsParameters params( QUrlQuery( request.url() ) );
// WMS query
QUrlQuery query = translateWmtsParamToWmsQueryItem( QStringLiteral( "GetMap" ), params, project, serverIface );
// Get cached image
QgsAccessControl *accessControl = serverIface->accessControls();
QgsServerCacheManager *cacheManager = serverIface->cacheManager();
if ( cacheManager )
{
QgsWmtsParameters::Format f = params.format();
QString contentType;
QString saveFormat;
std::unique_ptr<QImage> image;
if ( f == QgsWmtsParameters::Format::JPG )
{
contentType = QStringLiteral( "image/jpeg" );
saveFormat = QStringLiteral( "JPEG" );
image = qgis::make_unique<QImage>( 256, 256, QImage::Format_RGB32 );
}
else
{
contentType = QStringLiteral( "image/png" );
saveFormat = QStringLiteral( "PNG" );
image = qgis::make_unique<QImage>( 256, 256, QImage::Format_ARGB32_Premultiplied );
}
QByteArray content = cacheManager->getCachedImage( project, request, accessControl );
if ( !content.isEmpty() && image->loadFromData( content ) )
{
response.setHeader( QStringLiteral( "Content-Type" ), contentType );
image->save( response.io(), qPrintable( saveFormat ) );
return;
}
}
QgsServerParameters wmsParams( query );
QgsServerRequest wmsRequest( "?" + query.query( QUrl::FullyDecoded ) );
QgsService *service = serverIface->serviceRegistry()->getService( wmsParams.service(), wmsParams.version() );
service->executeRequest( wmsRequest, response, project );
if ( cacheManager )
{
QByteArray content = response.data();
if ( !content.isEmpty() )
cacheManager->setCachedImage( &content, project, request, accessControl );
}
}
QUrlQuery translateWmtsParamToWmsQueryItem( const QString &request, const QgsWmtsParameters ¶ms,
const QgsProject *project, QgsServerInterface *serverIface )
{
#ifndef HAVE_SERVER_PYTHON_PLUGINS
( void )serverIface;
#endif
//defining Layer
QString layer = params.layer();
//read Layer
if ( layer.isEmpty() )
{
throw QgsRequestNotWellFormedException( QStringLiteral( "Layer is mandatory" ) );
}
//check layer value
bool wmtsProject = project->readBoolEntry( QStringLiteral( "WMTSLayers" ), QStringLiteral( "Project" ) );
QStringList wmtsGroupNameList = project->readListEntry( QStringLiteral( "WMTSLayers" ), QStringLiteral( "Group" ) );
QStringList wmtsLayerIdList = project->readListEntry( QStringLiteral( "WMTSLayers" ), QStringLiteral( "Layer" ) );
QStringList wmtsLayerIds;
if ( wmtsProject )
{
// Root Layer name
QString rootLayerId = QgsServerProjectUtils::wmsRootName( *project );
if ( rootLayerId.isEmpty() )
{
rootLayerId = project->title();
}
if ( !rootLayerId.isEmpty() )
{
wmtsLayerIds << rootLayerId;
}
}
if ( !wmtsGroupNameList.isEmpty() )
{
QgsLayerTreeGroup *treeRoot = project->layerTreeRoot();
for ( const QString &gName : wmtsGroupNameList )
{
QgsLayerTreeGroup *treeGroup = treeRoot->findGroup( gName );
if ( !treeGroup )
{
continue;
}
QString groupLayerId = treeGroup->customProperty( QStringLiteral( "wmsShortName" ) ).toString();
if ( groupLayerId.isEmpty() )
{
groupLayerId = gName;
}
wmtsLayerIds << groupLayerId;
}
}
if ( !wmtsLayerIdList.isEmpty() )
{
#ifdef HAVE_SERVER_PYTHON_PLUGINS
QgsAccessControl *accessControl = serverIface->accessControls();
#endif
for ( const QString &lId : wmtsLayerIdList )
{
QgsMapLayer *l = project->mapLayer( lId );
if ( !l )
{
continue;
}
#ifdef HAVE_SERVER_PYTHON_PLUGINS
if ( !accessControl->layerReadPermission( l ) )
{
continue;
}
#endif
QString layerLayerId = l->shortName();
if ( layerLayerId.isEmpty() )
{
layerLayerId = l->name();
}
wmtsLayerIds << layerLayerId;
}
}
if ( !wmtsLayerIds.contains( layer ) )
{
QString msg = QObject::tr( "Layer '%1' not found" ).arg( layer );
throw QgsBadRequestException( QStringLiteral( "LayerNotDefined" ), msg );
}
//defining Format
QString format = params.formatAsString();
//read Format
if ( format.isEmpty() )
{
throw QgsRequestNotWellFormedException( QStringLiteral( "Format is mandatory" ) );
}
//defining TileMatrixSet ref
QString tms_ref = params.tileMatrixSet();
//read TileMatrixSet
if ( tms_ref.isEmpty() )
{
throw QgsRequestNotWellFormedException( QStringLiteral( "TileMatrixSet is mandatory" ) );
}
// verifying TileMatrixSet value
QList< tileMatrixSetDef > tmsList = getTileMatrixSetList( project, tms_ref );
if ( tmsList.isEmpty() )
{
throw QgsRequestNotWellFormedException( QStringLiteral( "TileMatrixSet is unknown" ) );
}
tileMatrixSetDef tms = tmsList[0];
if ( tms.ref != tms_ref )
{
throw QgsRequestNotWellFormedException( QStringLiteral( "TileMatrixSet is unknown" ) );
}
//defining TileMatrix idx
int tm_idx = params.tileMatrixAsInt();
//read TileMatrix
if ( tm_idx < 0 || tms.tileMatrixList.count() < tm_idx )
{
throw QgsRequestNotWellFormedException( QStringLiteral( "TileMatrix is unknown" ) );
}
tileMatrixDef tm = tms.tileMatrixList.at( tm_idx );
//defining TileRow
int tr = params.tileRowAsInt();
//read TileRow
if ( tr < 0 || tm.row <= tr )
{
throw QgsRequestNotWellFormedException( QStringLiteral( "TileRow is unknown" ) );
}
//defining TileCol
int tc = params.tileColAsInt();
//read TileCol
if ( tc < 0 || tm.col <= tc )
{
throw QgsRequestNotWellFormedException( QStringLiteral( "TileCol is unknown" ) );
}
double res = tm.resolution;
double minx = tm.left + tc * ( tileSize * res );
double miny = tm.top - ( tr + 1 ) * ( tileSize * res );
double maxx = tm.left + ( tc + 1 ) * ( tileSize * res );
double maxy = tm.top - tr * ( tileSize * res );
QString bbox;
if ( tms.hasAxisInverted )
{
bbox = qgsDoubleToString( miny, 6 ) + ',' +
qgsDoubleToString( minx, 6 ) + ',' +
qgsDoubleToString( maxy, 6 ) + ',' +
qgsDoubleToString( maxx, 6 );
}
else
{
bbox = qgsDoubleToString( minx, 6 ) + ',' +
qgsDoubleToString( miny, 6 ) + ',' +
qgsDoubleToString( maxx, 6 ) + ',' +
qgsDoubleToString( maxy, 6 );
}
QUrlQuery query;
if ( !params.value( QStringLiteral( "MAP" ) ).isEmpty() )
{
query.addQueryItem( QgsServerParameter::name( QgsServerParameter::MAP ), params.value( QStringLiteral( "MAP" ) ) );
}
query.addQueryItem( QgsServerParameter::name( QgsServerParameter::SERVICE ), QStringLiteral( "WMS" ) );
query.addQueryItem( QgsServerParameter::name( QgsServerParameter::VERSION_SERVICE ), QStringLiteral( "1.3.0" ) );
query.addQueryItem( QgsServerParameter::name( QgsServerParameter::REQUEST ), request );
query.addQueryItem( QgsWmsParameterForWmts::name( QgsWmsParameterForWmts::LAYERS ), layer );
query.addQueryItem( QgsWmsParameterForWmts::name( QgsWmsParameterForWmts::STYLES ), QString() );
query.addQueryItem( QgsWmsParameterForWmts::name( QgsWmsParameterForWmts::CRS ), tms.ref );
query.addQueryItem( QgsWmsParameterForWmts::name( QgsWmsParameterForWmts::BBOX ), bbox );
query.addQueryItem( QgsWmsParameterForWmts::name( QgsWmsParameterForWmts::WIDTH ), QStringLiteral( "256" ) );
query.addQueryItem( QgsWmsParameterForWmts::name( QgsWmsParameterForWmts::HEIGHT ), QStringLiteral( "256" ) );
query.addQueryItem( QgsWmsParameterForWmts::name( QgsWmsParameterForWmts::FORMAT ), format );
if ( params.format() == QgsWmtsParameters::Format::PNG )
{
query.addQueryItem( QgsWmsParameterForWmts::name( QgsWmsParameterForWmts::TRANSPARENT ), QStringLiteral( "true" ) );
}
query.addQueryItem( QgsWmsParameterForWmts::name( QgsWmsParameterForWmts::DPI ), QStringLiteral( "96" ) );
return query;
}