ADDED: Deselect net action

You can now deselect nets and netclasses (i.e. remove them from the
active selection) via the context menus in the appearance panel

pcbnew/pcb_edit_frame.cpp

@@ -670,6 +670,8 @@ void PCB_EDIT_FRAME::setupUIConditions()
 
     mgr->SetConditions( PCB_ACTIONS::selectNet,
                         ENABLE( SELECTION_CONDITIONS::OnlyTypes( GENERAL_COLLECTOR::Tracks ) ) );
+    mgr->SetConditions( PCB_ACTIONS::deselectNet,
+                        ENABLE( SELECTION_CONDITIONS::OnlyTypes( GENERAL_COLLECTOR::Tracks ) ) );
     mgr->SetConditions( PCB_ACTIONS::selectConnection,
                         ENABLE( SELECTION_CONDITIONS::OnlyTypes( GENERAL_COLLECTOR::Tracks ) ) );
     mgr->SetConditions( PCB_ACTIONS::selectSameSheet,

pcbnew/tools/pcb_actions.cpp

@@ -1156,6 +1156,12 @@ TOOL_ACTION PCB_ACTIONS::selectNet( "pcbnew.InteractiveSelection.SelectNet",
         _( "Selects all tracks & vias belonging to the same net." ),
         mode_track_xpm );
 
+TOOL_ACTION PCB_ACTIONS::deselectNet( "pcbnew.InteractiveSelection.DeselectNet",
+        AS_GLOBAL, 0, "",
+        _( "Deselect All Tracks in Net" ),
+        _( "Deselects all tracks & vias belonging to the same net." ),
+        mode_track_xpm );
+
 TOOL_ACTION PCB_ACTIONS::selectOnSheetFromEeschema( "pcbnew.InteractiveSelection.SelectOnSheet",
         AS_GLOBAL, 0, "",
         _( "Sheet" ),

pcbnew/tools/pcb_actions.h

@@ -79,6 +79,9 @@ public:
     /// Selects all connections belonging to a single net.
     static TOOL_ACTION selectNet;
 
+    /// Removes all connections belonging to a single net from the active selection
+    static TOOL_ACTION deselectNet;
+
     /// Selects all components on sheet from Eeschema crossprobing.
     static TOOL_ACTION selectOnSheetFromEeschema;
 

pcbnew/tools/selection_tool.cpp

@@ -73,6 +73,7 @@ public:
 
         Add( PCB_ACTIONS::selectConnection );
         Add( PCB_ACTIONS::selectNet );
+        Add( PCB_ACTIONS::deselectNet );
         Add( PCB_ACTIONS::selectSameSheet );
     }
 
@@ -1066,25 +1067,27 @@ void SELECTION_TOOL::selectConnectedTracks( BOARD_CONNECTED_ITEM& aStartItem,
 }
 
 
-void SELECTION_TOOL::selectAllItemsOnNet( int aNetCode )
+void SELECTION_TOOL::selectAllItemsOnNet( int aNetCode, bool aSelect )
 {
     constexpr KICAD_T types[] = { PCB_TRACE_T, PCB_VIA_T, EOT };
     auto connectivity = board()->GetConnectivity();
 
     for( BOARD_CONNECTED_ITEM* item : connectivity->GetNetItems( aNetCode, types ) )
         if( itemPassesFilter( item ) )
-            select( item );
+            aSelect ? select( item ) : unselect( item );
 }
 
 
 int SELECTION_TOOL::selectNet( const TOOL_EVENT& aEvent )
 {
-    // If we've been passed an argument, just select that netcode
+    bool select = aEvent.IsAction( &PCB_ACTIONS::selectNet );
+
+    // If we've been passed an argument, just select that netcode1
     int netcode = aEvent.Parameter<intptr_t>();
 
     if( netcode > 0 )
     {
-        selectAllItemsOnNet( netcode );
+        selectAllItemsOnNet( netcode, select );
         return 0;
     }
 
@@ -1099,7 +1102,7 @@ int SELECTION_TOOL::selectNet( const TOOL_EVENT& aEvent )
         BOARD_CONNECTED_ITEM* connItem = dynamic_cast<BOARD_CONNECTED_ITEM*>( i );
 
         if( connItem )
-            selectAllItemsOnNet( connItem->GetNetCode() );
+            selectAllItemsOnNet( connItem->GetNetCode(), select );
     }
 
     // Inform other potentially interested tools
@@ -2600,6 +2603,7 @@ void SELECTION_TOOL::setTransitions()
     Go( &SELECTION_TOOL::filterSelection,     PCB_ACTIONS::filterSelection.MakeEvent() );
     Go( &SELECTION_TOOL::expandConnection,    PCB_ACTIONS::selectConnection.MakeEvent() );
     Go( &SELECTION_TOOL::selectNet,           PCB_ACTIONS::selectNet.MakeEvent() );
+    Go( &SELECTION_TOOL::selectNet,           PCB_ACTIONS::deselectNet.MakeEvent() );
     Go( &SELECTION_TOOL::selectSameSheet,     PCB_ACTIONS::selectSameSheet.MakeEvent() );
     Go( &SELECTION_TOOL::selectSheetContents, PCB_ACTIONS::selectOnSheetFromEeschema.MakeEvent() );
     Go( &SELECTION_TOOL::updateSelection,     EVENTS::SelectedItemsModified );

pcbnew/tools/selection_tool.h

@@ -278,8 +278,10 @@ private:
 
     /**
      * Selects all items with the given net code
+     * @param aNetCode is the target net to select
+     * @param aSelect is true to add the items to the selection, false to remove them (deselect)
      */
-    void selectAllItemsOnNet( int aNetCode );
+    void selectAllItemsOnNet( int aNetCode, bool aSelect = true );
 
     /**
      * Selects all items with the given sheet timestamp/UUID name

pcbnew/widgets/appearance_controls.cpp

@@ -812,6 +812,9 @@ void APPEARANCE_CONTROLS::OnNetGridRightClick( wxGridEvent& event )
     menu.Append( new wxMenuItem( &menu, ID_SELECT_NET,
                                  wxString::Format( _( "Select tracks and vias in %s" ), netName ),
                                  wxEmptyString, wxITEM_NORMAL ) );
+    menu.Append( new wxMenuItem( &menu, ID_DESELECT_NET,
+                                 wxString::Format( _( "Deselect tracks and vias in %s" ), netName ),
+                                 wxEmptyString, wxITEM_NORMAL ) );
 
     menu.AppendSeparator();
 
@@ -1947,6 +1950,10 @@ void APPEARANCE_CONTROLS::rebuildNets()
                                          wxString::Format( _( "Select tracks and vias in %s" ),
                                                            name ),
                                          wxEmptyString, wxITEM_NORMAL ) );
+                            menu.Append( new wxMenuItem( &menu, ID_DESELECT_NET,
+                                         wxString::Format( _( "Deselect tracks and vias in %s" ),
+                                                           name ),
+                                         wxEmptyString, wxITEM_NORMAL ) );
 
                             menu.AppendSeparator();
 
@@ -2277,6 +2284,13 @@ void APPEARANCE_CONTROLS::onNetContextMenu( wxCommandEvent& aEvent )
         break;
     }
 
+    case ID_DESELECT_NET:
+    {
+        m_frame->GetToolManager()->RunAction( PCB_ACTIONS::deselectNet, true, net.code );
+        m_frame->GetCanvas()->Refresh();
+        break;
+    }
+
     case ID_SHOW_ALL_NETS:
         m_netsTable->ShowAllNets();
         break;
@@ -2504,9 +2518,12 @@ void APPEARANCE_CONTROLS::onNetclassContextMenu( wxCommandEvent& aEvent )
         }
 
         case ID_SELECT_NET:
+        case ID_DESELECT_NET:
         {
             if( netclass )
             {
+                TOOL_ACTION& action = aEvent.GetId() == ID_SELECT_NET ? PCB_ACTIONS::selectNet :
+                                                                        PCB_ACTIONS::deselectNet;
                 runOnNetsOfClass( netclass,
                         [&]( NETINFO_ITEM* aItem )
                         {
@@ -2514,8 +2531,7 @@ void APPEARANCE_CONTROLS::onNetclassContextMenu( wxCommandEvent& aEvent )
                                 return;
 
                             int code = aItem->GetNet();
-                            m_frame->GetToolManager()->RunAction( PCB_ACTIONS::selectNet, true,
-                                                                  code );
+                            m_frame->GetToolManager()->RunAction( action, true, code );
                         } );
             }
             break;

pcbnew/widgets/appearance_controls.h

@@ -366,6 +366,7 @@ private:
         ID_HIDE_OTHER_NETS,
         ID_HIGHLIGHT_NET,
         ID_SELECT_NET,
+        ID_DESELECT_NET,
         ID_SHOW_ALL_COPPER_LAYERS,
         ID_HIDE_ALL_COPPER_LAYERS,
         ID_HIDE_ALL_BUT_ACTIVE,