[feature] addMeshLayer to qgsinterface

python/gui/auto_generated/qgisinterface.sip.in

@@ -629,6 +629,11 @@ Add a raster layer given a raster layer file name
     virtual QgsRasterLayer *addRasterLayer( const QString &url, const QString &layerName, const QString &providerKey ) = 0;
 %Docstring
 Add a WMS layer
+%End
+
+    virtual QgsMeshLayer *addMeshLayer( const QString &url, const QString &baseName, const QString &providerKey ) = 0;
+%Docstring
+Add a mesh layer
 %End
 
     virtual bool addProject( const QString &project ) = 0;

python/gui/auto_generated/qgsabstractdatasourcewidget.sip.in

@@ -76,7 +76,7 @@ If ``providerKey`` is not specified, the default provider key associated with th
 will be used.
 %End
 
-    void addMeshLayer( const QString &uri, const QString &providerKey );
+    void addMeshLayer( const QString &url, const QString &baseName, const QString &providerKey );
 %Docstring
 Emitted when a mesh layer has been selected for addition.
 

src/app/qgisapp.cpp

@@ -4486,13 +4486,12 @@ bool QgisApp::addVectorLayers( const QStringList &layerQStringList, const QStrin
 } // QgisApp::addVectorLayer()
 
 
-bool QgisApp::addMeshLayer( const QString &uri, const QString &providerKey )
+QgsMeshLayer *QgisApp::addMeshLayer( const QString &url, const QString &baseName, const QString &providerKey )
 {
   bool wasfrozen = mMapCanvas->isFrozen();
   QgsSettings settings;
 
-  QFileInfo fi( uri );
-  QString base = fi.completeBaseName();
+  QString base( baseName );
 
   if ( settings.value( QStringLiteral( "qgis/formatLayerName" ), false ).toBool() )
   {
@@ -4503,23 +4502,24 @@ bool QgisApp::addMeshLayer( const QString &uri, const QString &providerKey )
 
   // create the layer
   QgsMeshLayer::LayerOptions options;
-  std::unique_ptr<QgsMeshLayer> layer( new QgsMeshLayer( uri, base, providerKey, options ) );
+  std::unique_ptr<QgsMeshLayer> layer( new QgsMeshLayer( url, base, providerKey, options ) );
 
   if ( ! layer || !layer->isValid() )
   {
-    QString msg = tr( "%1 is not a valid or recognized data source." ).arg( uri );
+    QString msg = tr( "%1 is not a valid or recognized data source." ).arg( url );
     messageBar()->pushMessage( tr( "Invalid Data Source" ), msg, Qgis::Critical, messageTimeout() );
 
     // since the layer is bad, stomp on it
-    return false;
+    return nullptr;
   }
 
   // Register this layer with the layers registry
   freezeCanvases();
+
+  QgsProject::instance()->addMapLayer( layer.get() );
   bool ok;
   layer->loadDefaultStyle( ok );
   layer->loadDefaultMetadata( ok );
-  QgsProject::instance()->addMapLayer( layer.release() );
 
   activateDeactivateLayerRelatedActions( activeLayer() );
 
@@ -4530,7 +4530,7 @@ bool QgisApp::addMeshLayer( const QString &uri, const QString &providerKey )
     freezeCanvases( false );
     refreshMapCanvas();
   }
-  return true;
+  return layer.release();
 } // QgisApp::addMeshLayer()
 
 // present a dialog to choose zipitem layers

src/app/qgisapp.h

@@ -905,6 +905,12 @@ class APP_EXPORT QgisApp : public QMainWindow, private Ui::MainWindow
       */
     QgsVectorLayer *addVectorLayer( const QString &vectorLayerPath, const QString &baseName, const QString &providerKey );
 
+    /**
+     * Adds a mesh layer directly without prompting user for location
+     * \returns true if successfully added layer
+     */
+    QgsMeshLayer *addMeshLayer( const QString &url, const QString &baseName, const QString &providerKey );
+
     /**
      * \brief overloaded version of the private addLayer method that takes a list of
      * file names instead of prompting user with a dialog.
@@ -922,12 +928,6 @@ class APP_EXPORT QgisApp : public QMainWindow, private Ui::MainWindow
       */
     bool addRasterLayers( const QStringList &layerQStringList, bool guiWarning = true );
 
-    /**
-     * Adds a mesh layer directly without prompting user for location
-     * \returns true if successfully added layer
-     */
-    bool addMeshLayer( const QString &uri, const QString &providerKey );
-
     //! Open a plugin layer using its provider
     QgsPluginLayer *addPluginLayer( const QString &uri, const QString &baseName, const QString &providerKey );
 

src/app/qgisappinterface.cpp

@@ -157,6 +157,11 @@ QgsRasterLayer *QgisAppInterface::addRasterLayer( const QString &url, const QStr
   return qgis->addRasterLayer( url, baseName, providerKey );
 }
 
+QgsMeshLayer *QgisAppInterface::addMeshLayer( const QString &url, const QString &baseName, const QString &providerKey )
+{
+  return qgis->addMeshLayer( url, baseName, providerKey );
+}
+
 bool QgisAppInterface::addProject( const QString &projectName )
 {
   return qgis->addProject( projectName );

src/app/qgisappinterface.h

@@ -75,6 +75,8 @@ class APP_EXPORT QgisAppInterface : public QgisInterface
     QgsRasterLayer *addRasterLayer( const QString &rasterLayerPath, const QString &baseName ) override;
     //! Add a WMS layer
     QgsRasterLayer *addRasterLayer( const QString &url, const QString &baseName, const QString &providerKey ) override;
+    //! Add a mesh layer
+    QgsMeshLayer *addMeshLayer( const QString &url, const QString &baseName, const QString &providerKey ) override;
 
     //! Add a project
     bool addProject( const QString &projectName ) override;

src/gui/qgisinterface.h

@@ -47,6 +47,7 @@ class QgsVectorLayerTools;
 class QgsOptionsWidgetFactory;
 class QgsLocatorFilter;
 class QgsStatusBar;
+class QgsMeshLayer;
 
 #include <QObject>
 #include <QFont>
@@ -546,6 +547,9 @@ class GUI_EXPORT QgisInterface : public QObject
     //! Add a WMS layer
     virtual QgsRasterLayer *addRasterLayer( const QString &url, const QString &layerName, const QString &providerKey ) = 0;
 
+    //! Add a mesh layer
+    virtual QgsMeshLayer *addMeshLayer( const QString &url, const QString &baseName, const QString &providerKey ) = 0;
+
     //! Add a project
     virtual bool addProject( const QString &project ) = 0;
     //! Start a blank project

src/gui/qgsabstractdatasourcewidget.h

@@ -93,7 +93,7 @@ class GUI_EXPORT QgsAbstractDataSourceWidget : public QDialog
      * Emitted when a mesh layer has been selected for addition.
      * \since QGIS 3.4
      */
-    void addMeshLayer( const QString &uri, const QString &providerKey );
+    void addMeshLayer( const QString &url, const QString &baseName, const QString &providerKey );
 
     /**
      * Emitted when one or more OGR supported layers are selected for addition

src/gui/qgsdatasourcemanagerdialog.h

@@ -100,7 +100,7 @@ class GUI_EXPORT QgsDataSourceManagerDialog : public QgsOptionsDialogBase, priva
      * Emitted when a mesh layer was selected for addition: for signal forwarding to QgisApp\
      * \since QGIS 3.4
      */
-    void addMeshLayer( const QString &uri, const QString &providerKey );
+    void addMeshLayer( const QString &uri, const QString &baseName, const QString &providerKey );
     //! Replace the selected layer by a vector layer defined by uri, layer name, data source uri
     void replaceSelectedVectorLayer( const QString &oldId, const QString &uri, const QString &layerName, const QString &provider );
     //! Emitted when a one or more layer were selected for addition: for signal forwarding to QgisApp

src/providers/mdal/qgsmdalsourceselect.cpp

@@ -49,7 +49,7 @@ void QgsMdalSourceSelect::addButtonClicked()
 
   for ( const QString &path : QgsFileWidget::splitFilePaths( mMeshPath ) )
   {
-    emit addMeshLayer( path, QStringLiteral( "mdal" ) );
+    emit addMeshLayer( path, QFileInfo( path ).baseName(), QStringLiteral( "mdal" ) );
   }
 }