EDIT_TOOL::DragArcTrack Fix incorrect undo history when items are deleted

Need to make sure we only apply one COMMIT operation per object before calling COMMIT::Push() or COMMIT::Revert()

libs/kimath/include/geometry/seg.h

@@ -3,6 +3,7 @@
  *
  * Copyright (C) 2013 CERN
  * @author Tomasz Wlostowski <tomasz.wlostowski@cern.ch>
+ * Copyright (C) 2021 KiCad Developers, see AUTHORS.txt for contributors.
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License

libs/kimath/include/geometry/shape_circle.h

@@ -3,6 +3,7 @@
  *
  * Copyright (C) 2013 CERN
  * @author Tomasz Wlostowski <tomasz.wlostowski@cern.ch>
+ * Copyright (C) 2021 KiCad Developers, see AUTHORS.txt for contributors.
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License

libs/kimath/include/trigo.h

@@ -1,7 +1,7 @@
 /*
  * This program source code file is part of KiCad, a free EDA CAD application.
  *
- * Copyright (C) 2018-2020 KiCad Developers, see AUTHORS.txt for contributors.
+ * Copyright (C) 2018-2021 KiCad Developers, see AUTHORS.txt for contributors.
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License

libs/kimath/src/geometry/seg.cpp

@@ -3,6 +3,7 @@
  *
  * Copyright (C) 2013 CERN
  * @author Tomasz Wlostowski <tomasz.wlostowski@cern.ch>
+ * Copyright (C) 2021 KiCad Developers, see AUTHORS.txt for contributors.
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License

libs/kimath/src/trigo.cpp

@@ -2,7 +2,7 @@
  * This program source code file is part of KiCad, a free EDA CAD application.
  *
  * Copyright (C) 2014 Jean-Pierre Charras, jp.charras at wanadoo.fr
- * Copyright (C) 2014-2019 KiCad Developers, see AUTHORS.txt for contributors.
+ * Copyright (C) 2014-2021 KiCad Developers, see AUTHORS.txt for contributors.
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License

pcbnew/tools/edit_tool.cpp

@@ -4,7 +4,7 @@
  * Copyright (C) 2013-2017 CERN
  * @author Maciej Suminski <maciej.suminski@cern.ch>
  * @author Tomasz Wlostowski <tomasz.wlostowski@cern.ch>
- * Copyright (C) 2017-2020 KiCad Developers, see AUTHORS.txt for contributors.
+ * Copyright (C) 2017-2021 KiCad Developers, see AUTHORS.txt for contributors.
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -295,7 +295,6 @@ int EDIT_TOOL::DragArcTrack( const TOOL_EVENT& aEvent )
     Activate();
 
     ARC* theArc = static_cast<ARC*>( selection.Front() );
-    m_commit->Modify( theArc );
 
     KIGFX::VIEW_CONTROLS* controls = getViewControls();
 
@@ -329,7 +328,6 @@ int EDIT_TOOL::DragArcTrack( const TOOL_EVENT& aEvent )
             if( itemsOnAnchor.size() == 1 && itemsOnAnchor.front()->Type() == PCB_TRACE_T )
             {
                 retval = static_cast<TRACK*>( itemsOnAnchor.front() );
-                m_commit->Modify( retval );
             }
             else
             {
@@ -349,6 +347,11 @@ int EDIT_TOOL::DragArcTrack( const TOOL_EVENT& aEvent )
     TRACK* trackOnStart = getUniqueConnectedTrack( theArc->GetStart() );
     TRACK* trackOnEnd = getUniqueConnectedTrack( theArc->GetEnd() );
 
+    // Make copies of items to be edited
+    ARC* theArcCopy = new ARC( *theArc );
+    TRACK* trackOnStartCopy = new TRACK( *trackOnStart );
+    TRACK* trackOnEndCopy = new TRACK( *trackOnEnd );
+
     if( !trackOnStart->IsNew() )
     {
         tanStart.A = trackOnStart->GetStart();
@@ -518,46 +521,50 @@ int EDIT_TOOL::DragArcTrack( const TOOL_EVENT& aEvent )
         }
     }
 
-    // Remove zero length tracks
+    // Ensure we only do one commit operation on each object
-    if( theArc->GetStart() == theArc->GetEnd() )
+    auto processTrack = 
-        m_commit->Remove( theArc );
+        [&]( TRACK* aTrack, TRACK* aTrackCopy ) 
-
-    auto cleanupTrack =
-            [&]( TRACK* aTrack )
         {
             if( aTrack->IsNew() )
             {
                 getView()->Remove( aTrack );
 
                 if( aTrack->GetStart() == aTrack->GetEnd() )
+                {
                     delete aTrack;
+                    delete aTrackCopy;
+                    aTrack = nullptr;
+                    aTrackCopy = nullptr;
+                }
                 else
+                {
                     m_commit->Add( aTrack );
+                    delete aTrackCopy;
+                    aTrackCopy = nullptr;
+                }
             }
             else  if( aTrack->GetStart() == aTrack->GetEnd() )
             {
+                aTrack->SwapData( aTrackCopy ); //restore the original before notifying COMMIT
                 m_commit->Remove( aTrack );
-                }
+                delete aTrackCopy;
-            };
+                aTrackCopy = nullptr;
-
-    cleanupTrack( trackOnStart );
-    cleanupTrack( trackOnEnd );
-
-    // Should we commit?
-    if( restore_state )
-    {
-        m_commit->Revert();
-
-        if( trackOnStart->IsNew() )
-            delete trackOnStart;
-
-        if( trackOnEnd->IsNew() )
-            delete trackOnEnd;
             }
             else
             {
-        m_commit->Push( _( "Drag Arc Track" ) );
+                m_commit->Modified( aTrack, aTrackCopy );
             }
+        };
+
+    processTrack( trackOnStart, trackOnStartCopy );
+    processTrack( trackOnEnd, trackOnEndCopy );
+    processTrack( theArc, theArcCopy );
+
+    // Should we commit?
+    if( restore_state )
+        m_commit->Revert();
+    else
+        m_commit->Push( _( "Drag Arc Track" ) );
 
     return 0;
 }

pcbnew/tools/edit_tool.h

@@ -2,7 +2,7 @@
  * This program source code file is part of KiCad, a free EDA CAD application.
  *
  * Copyright (C) 2013-2020 CERN
- * Copyright (C) 2013-2020 KiCad Developers, see AUTHORS.txt for contributors.
+ * Copyright (C) 2013-2021 KiCad Developers, see AUTHORS.txt for contributors.
  * @author Maciej Suminski <maciej.suminski@cern.ch>
  * @author Tomasz Wlostowski <tomasz.wlostowski@cern.ch>
  *

qa/libs/kimath/geometry/test_segment.cpp

@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2017 CERN
  * @author Alejandro García Montoro <alejandro.garciamontoro@gmail.com>
- * Copyright (C) 2019 KiCad Developers, see CHANGELOG.TXT for contributors.
+ * Copyright (C) 2019-2021 KiCad Developers, see AUTHORS.txt for contributors.
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License