Add QgsProviderRegistry::filePointCloudFilters() for retrieving filter string of all supported point cloud types

python/core/auto_generated/qgsproviderregistry.sip.in

@@ -339,6 +339,22 @@ fileMeshFilters to a string, which is then returned.
 .. seealso:: :py:func:`fileMeshFilters`
 
 .. versionadded:: 3.6
+%End
+
+    QString filePointCloudFilters() const;
+%Docstring
+Returns a file filter string for supported point clouds.
+
+Returns a string suitable for a QFileDialog of point cloud file formats
+supported by all data providers.
+
+.. seealso:: :py:func:`fileMeshFilters`
+
+.. seealso:: :py:func:`fileRasterFilters`
+
+.. seealso:: :py:func:`fileVectorFilters`
+
+.. versionadded:: 3.18
 %End
 
     QString databaseDrivers() const;

src/core/qgsproviderregistry.cpp

@@ -292,6 +292,15 @@ void QgsProviderRegistry::init()
       QgsDebugMsgLevel( QStringLiteral( "Checking %1: ...loaded OK (%2 file dataset filters)" ).arg( key ).arg( mMeshDatasetFileFilters.split( ";;" ).count() ), 2 );
     }
 
+    // now get point cloud file filters, if any
+    const QString filePointCloudFilters = meta->filters( QgsProviderMetadata::FilterType::FilterPointCloud );
+    if ( !filePointCloudFilters.isEmpty() )
+    {
+      QgsDebugMsgLevel( "point cloud filters: " + filePointCloudFilters, 2 );
+      mPointCloudFileFilters += filePointCloudFilters;
+      QgsDebugMsgLevel( QStringLiteral( "Checking %1: ...loaded OK (%2 file filters)" ).arg( key ).arg( filePointCloudFilters.split( ";;" ).count() ), 2 );
+    }
+
     // call initProvider() - allows provider to register its services to QGIS
     meta->initProvider();
   }
@@ -702,6 +711,11 @@ QString QgsProviderRegistry::fileMeshDatasetFilters() const
   return mMeshDatasetFileFilters;
 }
 
+QString QgsProviderRegistry::filePointCloudFilters() const
+{
+  return mPointCloudFileFilters;
+}
+
 QString QgsProviderRegistry::databaseDrivers() const
 {
   return mDatabaseDrivers;

src/core/qgsproviderregistry.h

@@ -340,6 +340,20 @@ class CORE_EXPORT QgsProviderRegistry
      */
     QString fileMeshDatasetFilters() const;
 
+    /**
+     * Returns a file filter string for supported point clouds.
+     *
+     * Returns a string suitable for a QFileDialog of point cloud file formats
+     * supported by all data providers.
+     *
+     * \see fileMeshFilters()
+     * \see fileRasterFilters()
+     * \see fileVectorFilters()
+     *
+     * \since QGIS 3.18
+     */
+    QString filePointCloudFilters() const;
+
     //! Returns a string containing the available database drivers
     QString databaseDrivers() const;
     //! Returns a string containing the available directory drivers
@@ -406,6 +420,11 @@ class CORE_EXPORT QgsProviderRegistry
      */
     QString mMeshDatasetFileFilters;
 
+    /**
+     * File filter string for point cloud files
+     */
+    QString mPointCloudFileFilters;
+
     /**
      * Available database drivers string for vector databases
      *

tests/src/providers/testqgseptprovider.cpp

@@ -82,6 +82,9 @@ void TestQgsEptProvider::filters()
 
   QCOMPARE( metadata->filters( QgsProviderMetadata::FilterType::FilterPointCloud ), QStringLiteral( "Entwine Point Clouds (ept.json EPT.JSON)" ) );
   QCOMPARE( metadata->filters( QgsProviderMetadata::FilterType::FilterVector ), QString() );
+
+  const QString registryPointCloudFilters = QgsProviderRegistry::instance()->filePointCloudFilters();
+  QVERIFY( registryPointCloudFilters.contains( "(ept.json EPT.JSON)" ) );
 }