Possibility to restrict number of atlas features (default: 1)

python/server/auto_generated/qgsserverprojectutils.sip.in

@@ -154,6 +154,8 @@ Returns the quality for WMS images defined in a QGIS project.
 :return: quality if defined in project, -1 otherwise.
 %End
 
+  int wmsMaxAtlasFeatures( const QgsProject &project );
+
   bool wmsUseLayerIds( const QgsProject &project );
 %Docstring
 Returns if layer ids are used as name in WMS.

src/app/qgsprojectproperties.cpp

@@ -637,6 +637,8 @@ QgsProjectProperties::QgsProjectProperties( QgsMapCanvas *mapCanvas, QWidget *pa
     mWMSImageQualitySpinBox->setValue( imageQuality );
   }
 
+  mWMSMaxAtlasFeaturesSpinBox->setValue( QgsProject::instance()->readNumEntry( QStringLiteral( "WMSMaxAtlasFeatures" ), QStringLiteral( "/" ), 1 ) );
+
   mWMTSUrlLineEdit->setText( QgsProject::instance()->readEntry( QStringLiteral( "WMTSUrl" ), QStringLiteral( "/" ), QString() ) );
   mWMTSMinScaleLineEdit->setValue( QgsProject::instance()->readNumEntry( QStringLiteral( "WMTSMinScale" ), QStringLiteral( "/" ), 5000 ) );
 
@@ -1260,6 +1262,9 @@ void QgsProjectProperties::apply()
     QgsProject::instance()->writeEntry( QStringLiteral( "WMSImageQuality" ), QStringLiteral( "/" ), imageQualityValue );
   }
 
+  int maxAtlasFeatures = mWMSMaxAtlasFeaturesSpinBox->value();
+  QgsProject::instance()->writeEntry( QStringLiteral( "WMSMaxAtlasFeatures" ), QStringLiteral( "/" ), maxAtlasFeatures );
+
   QgsProject::instance()->writeEntry( QStringLiteral( "WMTSUrl" ), QStringLiteral( "/" ), mWMTSUrlLineEdit->text() );
   QgsProject::instance()->writeEntry( QStringLiteral( "WMTSMinScale" ), QStringLiteral( "/" ), mWMTSMinScaleLineEdit->value() );
   bool wmtsProject = false;

src/server/qgsserverprojectutils.cpp

@@ -111,6 +111,11 @@ int QgsServerProjectUtils::wmsImageQuality( const QgsProject &project )
   return project.readNumEntry( QStringLiteral( "WMSImageQuality" ), QStringLiteral( "/" ), -1 );
 }
 
+int QgsServerProjectUtils::wmsMaxAtlasFeatures( const QgsProject &project )
+{
+  return project.readNumEntry( QStringLiteral( "WMSMaxAtlasFeatures" ), QStringLiteral( "/" ), 1 );
+}
+
 bool QgsServerProjectUtils::wmsInfoFormatSia2045( const QgsProject &project )
 {
   QString sia2045 = project.readEntry( QStringLiteral( "WMSInfoFormatSIA2045" ), QStringLiteral( "/" ), "" );

src/server/qgsserverprojectutils.h

@@ -147,6 +147,8 @@ namespace QgsServerProjectUtils
    */
   SERVER_EXPORT int wmsImageQuality( const QgsProject &project );
 
+  SERVER_EXPORT int wmsMaxAtlasFeatures( const QgsProject &project );
+
   /**
    * Returns if layer ids are used as name in WMS.
    * \param project the QGIS project

src/server/services/wms/qgswmsrenderer.cpp

@@ -415,8 +415,13 @@ namespace QgsWms
                                       QStringLiteral( "Wrong number of ATLAS_PK parameters" ) );
       }
 
+      //number of atlas features might be restricted
+      int maxAtlasFeatures = QgsServerProjectUtils::wmsMaxAtlasFeatures( *mProject );
+      nAtlasFeatures = std::min( nAtlasFeatures, maxAtlasFeatures );
+
       QString filterString;
       int currentAtlasPk = 0;
+
       for ( int i = 0; i < nAtlasFeatures; ++i )
       {
         if ( i > 0 )