[convert to curve] improve interaction while dragging

qgis · Jun 18, 2021 · af96675 · af96675
1 parent 527042e
commit af96675
Showing 1 changed file with 11 additions and 0 deletions.
diff --git a/src/app/vertextool/qgsvertextool.cpp b/src/app/vertextool/qgsvertextool.cpp
@@ -2585,7 +2585,18 @@ void QgsVertexTool::toggleVertexCurve()
   }
 
   if ( mDraggingVertex )
+  {
     stopDragging();
+    if( mDraggingVertexType == AddingVertex || mDraggingVertexType == AddingEndpoint )
+    {
+      QgisApp::instance()->messageBar()->pushMessage(
+        tr( "Could not convert vertex" ),
+        tr( "Cannot convert vertex before it is added." ),
+        Qgis::Warning );
+      return;
+    }
+
+  }
 
   QgsVectorLayer *layer = toConvert.layer;