Annotate the board class with if it is for a footprint edit/view

3d-viewer/3d_cache/dialogs/panel_prev_3d.cpp

@@ -51,6 +51,10 @@ PANEL_PREV_3D::PANEL_PREV_3D( wxWindow* aParent, PCB_BASE_FRAME* aFrame, MODULE*
     m_userUnits = aFrame->GetUserUnits();
 
     m_dummyBoard = new BOARD();
+
+    // This board will only be used to hold a footprint for viewing
+    m_dummyBoard->SetBoardUse( BOARD_USE::FPHOLDER );
+
     m_selected = -1;
 
     // Set the bitmap of 3D view buttons:

cvpcb/display_footprints_frame.cpp

@@ -75,6 +75,10 @@ DISPLAY_FOOTPRINTS_FRAME::DISPLAY_FOOTPRINTS_FRAME( KIWAY* aKiway, wxWindow* aPa
     SetIcon( icon );
 
     SetBoard( new BOARD() );
+
+    // This board will only be used to hold a footprint for viewing
+    GetBoard()->SetBoardUse( BOARD_USE::FPHOLDER );
+
     SetScreen( new PCB_SCREEN( GetPageSizeIU() ) );
 
     // Create GAL canvas before loading settings

pcbnew/class_board.cpp

@@ -58,6 +58,7 @@ wxPoint BOARD_ITEM::ZeroOffset( 0, 0 );
 
 BOARD::BOARD() :
         BOARD_ITEM_CONTAINER( (BOARD_ITEM*) NULL, PCB_T ),
+        m_boardUse( BOARD_USE::NORMAL ),
         m_paper( PAGE_INFO::A4 ),
         m_project( nullptr ),
         m_designSettings( new BOARD_DESIGN_SETTINGS( nullptr, "board.design_settings" ) ),

pcbnew/class_board.h

@@ -170,6 +170,16 @@ DECL_DEQ_FOR_SWIG( TRACKS, TRACK* )
 // Dequeue rather than Vector just so we can use moveUnflaggedItems in pcbnew_control.cpp
 DECL_DEQ_FOR_SWIG( GROUPS, PCB_GROUP* )
 
+/**
+ * Flags to specify how the board is being used.
+ */
+enum class BOARD_USE
+{
+    NORMAL,     // A normal board
+    FPHOLDER    // A board that holds a single footprint
+};
+
+
 /**
  * Information pertinent to a Pcbnew printed circuit board.
  */
@@ -178,6 +188,9 @@ class BOARD : public BOARD_ITEM_CONTAINER
     friend class PCB_EDIT_FRAME;
 
 private:
+    /// What is this board being used for
+    BOARD_USE               m_boardUse;
+
     wxString                m_fileName;
     MARKERS                 m_markers;
     DRAWINGS                m_drawings;
@@ -237,6 +250,30 @@ public:
         return aItem && PCB_T == aItem->Type();
     }
 
+    /**
+     * Set what the board is going to be used for.
+     *
+     * @param aUse is the flag
+     */
+    void SetBoardUse( BOARD_USE aUse ) { m_boardUse = aUse; }
+
+    /**
+     * Get what the board use is.
+     *
+     * @return what the board is being used for
+     */
+    BOARD_USE GetBoardUse() { return m_boardUse; }
+
+    /**
+     * Find out if the board is being used to hold a single footprint for editing/viewing.
+     *
+     * @return if the board is just holding a footprint
+     */
+    bool IsFootprintHolder()
+    {
+        return m_boardUse == BOARD_USE::FPHOLDER;
+    }
+
     void SetFileName( const wxString& aFileName ) { m_fileName = aFileName; }
 
     const wxString &GetFileName() const { return m_fileName; }

pcbnew/footprint_edit_frame.cpp

@@ -135,6 +135,10 @@ FOOTPRINT_EDIT_FRAME::FOOTPRINT_EDIT_FRAME( KIWAY* aKiway, wxWindow* aParent,
     SetCanvas( drawPanel );
     SetBoard( new BOARD() );
 
+
+    // This board will only be used to hold a footprint for editing
+    GetBoard()->SetBoardUse( BOARD_USE::FPHOLDER );
+
     // In modedit, the default net clearance is not known (it depends on the actual board).
     // So we do not show the default clearance, by setting it to 0.
     // The footprint or pad specific clearance will be shown.

pcbnew/footprint_viewer_frame.cpp

@@ -175,6 +175,10 @@ FOOTPRINT_VIEWER_FRAME::FOOTPRINT_VIEWER_FRAME( KIWAY* aKiway, wxWindow* aParent
     SetCanvas( drawPanel );
 
     SetBoard( new BOARD() );
+
+    // This board will only be used to hold a footprint for viewing
+    GetBoard()->SetBoardUse( BOARD_USE::FPHOLDER );
+
     // In viewer, the default net clearance is not known (it depends on the actual board).
     // So we do not show the default clearance, by setting it to 0
     // The footprint or pad specific clearance will be shown

pcbnew/initpcb.cpp

@@ -119,6 +119,9 @@ bool FOOTPRINT_EDIT_FRAME::Clear_Pcb( bool aQuery )
     board->SynchronizeNetsAndNetClasses();
     SetBoard( board );
 
+    // This board will only be used to hold a footprint for editing
+    GetBoard()->SetBoardUse( BOARD_USE::FPHOLDER );
+
     // clear filename, to avoid overwriting an old file
     GetBoard()->SetFileName( wxEmptyString );