Removed D_PAD::SetNetname() function and D_PAD::m_Netname, D_PAD::m_ShortNetname fields.

D_PAD::GetNetname() and D_PAD::GetShortNetname() were moved to BOARD_CONNECTED_ITEM. Now they use the net name stored in NETINFO_ITEM.
Moved some one-line functions from class_board_connected_item.cpp to class_board_connected_item.h.
Added a copyright notice, moved Doxygen comments from class_board_connected_item.cpp to class_board_connected_item.h.

I have some doubts if changes introduced pcbnew/dialogs/dialog_pad_properties.cpp do not break anything, but I could not find a test case that breaks the pcbnew.

Performed tests:
- changed pad's net name from empty to existent - ok, name was changed
- changed pad's net name from empty to nonexistent - ok, error message is displayed, net name stays empty
- changed pad's net name from existent to empty - ok, net name became empty
- changed pad's net name from existent to nonexistent - ok, error message is displayed, net name is not changed
- (re)reading netlists, including net changes - fine, changes are applied, but empty nets are still kept
- loaded pcbnew/pcad2kicadpcb_plugin/examples/CK1202_V1.pcb to test P-CAD import plugin - ok, net names are correct
- imported an Eagle 6.0 board (Arduino Uno; http://arduino.cc/en/uploads/Main/arduino_Uno_Rev3-02-TH.zip) then saved in .kicad_pcb format and reloaded - ok, net names are correct
- saved demos/video/video.kicad_pcb in legacy format and then loaded it again - ok, net names are correct

pcbnew/class_board.cpp

@@ -2546,10 +2546,7 @@ void BOARD::ReplaceNetlist( NETLIST& aNetlist, bool aDeleteSinglePadNets,
                     }
 
                     if( !aNetlist.IsDryRun() )
-                    {
-                        pad->SetNetname( wxEmptyString );
                         pad->SetNet( 0 );
-                    }
                 }
             }
             else                                 // Footprint pad has a net.
@@ -2570,8 +2567,6 @@ void BOARD::ReplaceNetlist( NETLIST& aNetlist, bool aDeleteSinglePadNets,
 
                     if( !aNetlist.IsDryRun() )
                     {
-                        pad->SetNetname( net.GetNetName() );
-
                         NETINFO_ITEM* netinfo = FindNet( net.GetNetName() );
                         if( netinfo == NULL )
                         {
@@ -2653,7 +2648,7 @@ void BOARD::ReplaceNetlist( NETLIST& aNetlist, bool aDeleteSinglePadNets,
                                     GetChars( previouspad->GetPadName() ) );
                         aReporter->Report( msg );
                     }
-                    previouspad->SetNetname( wxEmptyString );
+
                     previouspad->SetNet( 0 );
                 }
                 netname = pad->GetNetname();
@@ -2667,10 +2662,7 @@ void BOARD::ReplaceNetlist( NETLIST& aNetlist, bool aDeleteSinglePadNets,
 
         // Examine last pad
         if( pad && count == 1 )
-        {
-            pad->SetNetname( wxEmptyString );
             pad->SetNet( 0 );
-        }
     }
 
     // Last step: Some tests:

pcbnew/class_board_connected_item.cpp

-/**
- * @file class_board_connected_item.cpp
- * @brief BOARD_CONNECTED_ITEM class functions.
- */
-
 /*
  * This program source code file is part of KiCad, a free EDA CAD application.
  *
@@ -28,6 +23,11 @@
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
  */
 
+/**
+ * @file class_board_connected_item.cpp
+ * @brief BOARD_CONNECTED_ITEM class functions.
+ */
+
 #include <fctsys.h>
 #include <pcbnew.h>
 
@@ -36,68 +36,32 @@
 
 
 BOARD_CONNECTED_ITEM::BOARD_CONNECTED_ITEM( BOARD_ITEM* aParent, KICAD_T idtype ) :
-    BOARD_ITEM( aParent, idtype )
+    BOARD_ITEM( aParent, idtype ), m_NetCode( 0 ), m_Subnet( 0 ), m_ZoneSubnet( 0 )
 {
-    m_NetCode    = 0;
-    m_Subnet     = 0;
-    m_ZoneSubnet = 0;
 }
 
 
 BOARD_CONNECTED_ITEM::BOARD_CONNECTED_ITEM( const BOARD_CONNECTED_ITEM& aItem ) :
-    BOARD_ITEM( aItem )
-{
-    m_NetCode = aItem.m_NetCode;
-    m_Subnet = aItem.m_Subnet;
-    m_ZoneSubnet = aItem.m_ZoneSubnet;
-}
-
-
-/**
- * Function GetNet
- * @return int - the net code.
- */
-int BOARD_CONNECTED_ITEM::GetNet() const
-{
-    return m_NetCode;
-}
-
-
-void BOARD_CONNECTED_ITEM::SetNet( int aNetCode )
+    BOARD_ITEM( aItem ), m_NetCode( aItem.m_NetCode ), m_Subnet( aItem.m_Subnet ),
+    m_ZoneSubnet( aItem.m_ZoneSubnet )
 {
-    m_NetCode = aNetCode;
 }
 
 
-/**
- * Function GetSubNet
- * @return int - the sub net code.
- */
-int BOARD_CONNECTED_ITEM::GetSubNet() const
+const wxString& BOARD_CONNECTED_ITEM::GetNetname() const
 {
-    return m_Subnet;
-}
-
+    BOARD* board = GetBoard();
+    NETINFO_ITEM* netinfo = board->FindNet( m_NetCode );
 
-void BOARD_CONNECTED_ITEM::SetSubNet( int aSubNetCode )
-{
-    m_Subnet = aSubNetCode;
+    return netinfo->GetNetname();
 }
 
 
-/**
- * Function GetZoneSubNet
- * @return int - the sub net code in zone connections.
- */
-int BOARD_CONNECTED_ITEM::GetZoneSubNet() const
+const wxString& BOARD_CONNECTED_ITEM::GetShortNetname() const
 {
-    return m_ZoneSubnet;
-}
+    NETINFO_ITEM* netinfo = GetBoard()->FindNet( m_NetCode );
 
-
-void BOARD_CONNECTED_ITEM::SetZoneSubNet( int aSubNetCode )
-{
-    m_ZoneSubnet = aSubNetCode;
+    return netinfo->GetShortNetname();
 }
 
 
@@ -132,11 +96,6 @@ int BOARD_CONNECTED_ITEM::GetClearance( BOARD_CONNECTED_ITEM* aItem ) const
 }
 
 
-/** return a pointer to the netclass of the zone
- * if the net is not found (can happen when a netlist is reread,
- * and the net name is not existant, return the default net class
- * So should not return a null pointer
- */
 NETCLASS* BOARD_CONNECTED_ITEM::GetNetClass() const
 {
     // It is important that this be implemented without any sequential searching.
@@ -176,10 +135,7 @@ NETCLASS* BOARD_CONNECTED_ITEM::GetNetClass() const
         return board->m_NetClasses.GetDefault();
 }
 
-/**
- * Function GetNetClassName
- * @return the Net Class name of this item
- */
+
 wxString BOARD_CONNECTED_ITEM::GetNetClassName() const
 {
     wxString    name;

pcbnew/class_board_connected_item.h

+/*
+ * This program source code file is part of KiCad, a free EDA CAD application.
+ *
+ * Copyright (C) 2012 Jean-Pierre Charras, jean-pierre.charras@ujf-grenoble.fr
+ * Copyright (C) 2012 SoftPLC Corporation, Dick Hollenbeck <dick@softplc.com>
+ * Copyright (C) 1992-2012 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
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, you may find one here:
+ * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
+ * or you may search the http://www.gnu.org website for the version 2 license,
+ * or you may write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
+ */
+
 /**
  * @file  class_board_connected_item.h
  * @brief Class BOARD_CONNECTED_ITEM.
@@ -6,7 +31,6 @@
 #ifndef BOARD_CONNECTED_ITEM_H
 #define BOARD_CONNECTED_ITEM_H
 
-
 #include <class_board_item.h>
 
 class NETCLASS;
@@ -48,22 +72,55 @@ public:
      * Function GetNet
      * @return int - the net code.
      */
-    int GetNet() const;
-    virtual void SetNet( int aNetCode );
+    int GetNet() const
+    {
+        return m_NetCode;
+    }
+
+    virtual void SetNet( int aNetCode )
+    {
+        m_NetCode = aNetCode;
+    }
 
     /**
      * Function GetSubNet
      * @return int - the sub net code.
      */
-    int GetSubNet() const;
-    void SetSubNet( int aSubNetCode );
+    int GetSubNet() const
+    {
+        return m_Subnet;
+    }
+
+    void SetSubNet( int aSubNetCode )
+    {
+        m_Subnet = aSubNetCode;
+    }
 
     /**
      * Function GetZoneSubNet
      * @return int - the sub net code in zone connections.
      */
-    int GetZoneSubNet() const;
-    void SetZoneSubNet( int aSubNetCode );
+    int GetZoneSubNet() const
+    {
+        return m_ZoneSubnet;
+    }
+
+    void SetZoneSubNet( int aSubNetCode )
+    {
+        m_ZoneSubnet = aSubNetCode;
+    }
+
+    /**
+     * Function GetNetname
+     * @return const wxString& - the full netname
+     */
+    const wxString& GetNetname() const;
+
+    /**
+     * Function GetShortNetname
+     * @return const wxString& - the short netname
+     */
+    const wxString& GetShortNetname() const;
 
     /**
      * Function GetClearance
@@ -84,6 +141,10 @@ public:
 
     /**
      * Function GetNetClassName
+     * returns a pointer to the netclass of the zone.
+     * If the net is not found (can happen when a netlist is reread,
+     * and the net name does not exist, return the default net class
+     * (should not return a null pointer).
      * @return the Net Class name of this item
      */
     wxString GetNetClassName() const;

pcbnew/class_pad.cpp

@@ -364,13 +364,6 @@ void D_PAD::SetPadName( const wxString& name )
 }
 
 
-void D_PAD::SetNetname( const wxString& aNetname )
-{
-    m_Netname = aNetname;
-    m_ShortNetname = m_Netname.AfterLast( '/' );
-}
-
-
 void D_PAD::Copy( D_PAD* source )
 {
     if( source == NULL )
@@ -402,8 +395,6 @@ void D_PAD::Copy( D_PAD* source )
 
     SetSubRatsnest( 0 );
     SetSubNet( 0 );
-    m_Netname = source->m_Netname;
-    m_ShortNetname = source->m_ShortNetname;
 }
 
 
@@ -412,7 +403,6 @@ void D_PAD::CopyNetlistSettings( D_PAD* aPad )
     // Don't do anything foolish like trying to copy to yourself.
     wxCHECK_RET( aPad != NULL && aPad != this, wxT( "Cannot copy to NULL or yourself." ) );
 
-    aPad->SetNetname( GetNetname() );
     aPad->SetNet( GetNet() );
 
     aPad->SetLocalClearance( m_LocalClearance );
@@ -578,7 +568,7 @@ void D_PAD::GetMsgPanelInfo( std::vector< MSG_PANEL_ITEM>& aList )
         aList.push_back( MSG_PANEL_ITEM( _( "Pad" ), Line, BROWN ) );
     }
 
-    aList.push_back( MSG_PANEL_ITEM( _( "Net" ), m_Netname, DARKCYAN ) );
+    aList.push_back( MSG_PANEL_ITEM( _( "Net" ), GetNetname(), DARKCYAN ) );
 
     /* For test and debug only: display m_physical_connexion and
      * m_logical_connexion */

pcbnew/class_pad.h

@@ -118,30 +118,6 @@ public:
         return m_NumPadName == other->m_NumPadName; // hide tricks behind sensible API
     }
 
-    /**
-     * Function SetNetname
-     * @param aNetname: the new netname
-     */
-    void SetNetname( const wxString& aNetname );
-
-    /**
-     * Function GetNetname
-     * @return const wxString& - the full netname
-     */
-    const wxString& GetNetname() const
-    {
-        assert( ( GetNet() == 0 ) == m_Netname.IsEmpty() );
-        // assert( GetBoard()->FindNet( GetNet() ) == GetBoard()->FindNet( m_Netname ) );
-
-        return m_Netname;
-    }
-
-    /**
-     * Function GetShortNetname
-     * @return const wxString& - the short netname
-     */
-    const wxString& GetShortNetname() const { return m_ShortNetname; }
-
     /**
      * Function GetShape
      * @return the shape of this pad.
@@ -475,10 +451,6 @@ private:
 
     int         m_boundingRadius;  ///< radius of the circle containing the pad shape
 
-
-    wxString    m_Netname;         ///< Full net name like /mysheet/mysubsheet/vout used by Eeschema
-    wxString    m_ShortNetname;    ///< short net name, like vout from /mysheet/mysubsheet/vout
-
     /// Pad name (4 char) or a long identifier (used in pad name
     /// comparisons because this is faster than string comparison)
     union

pcbnew/class_pad_draw_functions.cpp

@@ -473,7 +473,7 @@ void D_PAD::DrawShape( EDA_RECT* aClipBox, wxDC* aDC, PAD_DRAWINFO& aDrawInfo )
     GRSetDrawMode( aDC, aDrawInfo.m_DrawMode );
 
     // Draw "No connect" ( / or \ or cross X ) if necessary
-    if( m_Netname.IsEmpty() && aDrawInfo.m_ShowNCMark )
+    if( GetNet() == 0 && aDrawInfo.m_ShowNCMark )
     {
         int dx0 = std::min( halfsize.x, halfsize.y );
         EDA_COLOR_T nc_color = BLUE;
@@ -499,7 +499,7 @@ void D_PAD::DrawShape( EDA_RECT* aClipBox, wxDC* aDC, PAD_DRAWINFO& aDrawInfo )
     wxPoint tpos0 = shape_pos;     // Position of the centre of text
     wxPoint tpos  = tpos0;
     wxSize  AreaSize;              // size of text area, normalized to AreaSize.y < AreaSize.x
-    int     shortname_len = m_ShortNetname.Len();
+    int     shortname_len = GetShortNetname().Len();
 
     if( !aDrawInfo.m_Display_netname )
         shortname_len = 0;
@@ -583,7 +583,7 @@ void D_PAD::DrawShape( EDA_RECT* aClipBox, wxDC* aDC, PAD_DRAWINFO& aDrawInfo )
         tsize = ( tsize * 7 ) / 10;
         DrawGraphicHaloText( clipBox, aDC, tpos,
                              aDrawInfo.m_Color, BLACK, WHITE,
-                             m_ShortNetname, t_angle,
+                             GetShortNetname(), t_angle,
                              wxSize( tsize, tsize ), GR_TEXT_HJUSTIFY_CENTER,
                              GR_TEXT_VJUSTIFY_CENTER, tsize / 7, false, false );
     }

pcbnew/dialogs/dialog_pad_properties.cpp

@@ -151,7 +151,8 @@ DIALOG_PAD_PROPERTIES::DIALOG_PAD_PROPERTIES( PCB_BASE_FRAME* aParent, D_PAD* aP
     m_parent     = aParent;
     m_currentPad = aPad;
     m_board      = m_parent->GetBoard();
-    m_dummyPad   = new D_PAD( (MODULE*) NULL );
+    m_dummyPad   = new D_PAD( aPad->GetParent() );
+    m_padMaster.SetParent( aPad->GetParent() );
 
     if( aPad )
         m_dummyPad->Copy( aPad );
@@ -809,25 +810,16 @@ void DIALOG_PAD_PROPERTIES::PadPropertiesAccept( wxCommandEvent& event )
 
         m_currentPad->SetPadName( m_padMaster.GetPadName() );
 
-        if( m_currentPad->GetNetname() != m_padMaster.GetNetname() )
+        if( m_currentPad->GetNetname() != m_PadNetNameCtrl->GetValue() )
         {
-            if( m_padMaster.GetNetname().IsEmpty() )
+            if( !m_PadNetNameCtrl->GetValue().IsEmpty() && m_padMaster.GetNet() == 0 )
             {
-                rastnestIsChanged = true;
-                m_currentPad->SetNet( 0 );
-                m_currentPad->SetNetname( wxEmptyString );
+                DisplayError( NULL, _( "Unknown netname, netname not changed" ) );
             }
             else
             {
-                const NETINFO_ITEM* net = m_board->FindNet( m_padMaster.GetNetname() );
-                if( net )
-                {
-                    rastnestIsChanged = true;
-                    m_currentPad->SetNetname( m_padMaster.GetNetname() );
-                    m_currentPad->SetNet( net->GetNet() );
-                }
-                else
-                    DisplayError( NULL, _( "Unknown netname, netname not changed" ) );
+                rastnestIsChanged = true;
+                m_currentPad->SetNet( m_padMaster.GetNet() );
             }
         }
 
@@ -986,7 +978,13 @@ bool DIALOG_PAD_PROPERTIES::transferDataToPad( D_PAD* aPad )
 
     msg = m_PadNumCtrl->GetValue().Left( 4 );
     aPad->SetPadName( msg );
-    aPad->SetNetname( m_PadNetNameCtrl->GetValue() );
+
+    // Check if user has set an existing net name
+    const NETINFO_ITEM* netinfo = m_board->FindNet( m_PadNetNameCtrl->GetValue() );
+    if( netinfo != NULL )
+        aPad->SetNet( netinfo->GetNet() );
+    else
+        aPad->SetNet( 0 );
 
     // Clear some values, according to the pad type and shape
     switch( aPad->GetShape() )
@@ -1034,7 +1032,7 @@ bool DIALOG_PAD_PROPERTIES::transferDataToPad( D_PAD* aPad )
         // no offset, no net name, no pad name allowed
         aPad->SetOffset( wxPoint( 0, 0 ) );
         aPad->SetPadName( wxEmptyString );
-        aPad->SetNetname( wxEmptyString );
+        aPad->SetNet( 0 );
         break;
 
     default:

pcbnew/eagle_plugin.cpp

@@ -1696,7 +1696,6 @@ void EAGLE_PLUGIN::loadElements( CPTREE& aElements )
             if( ni != m_pads_to_nets.end() )
             {
                 const ENET* enet = &ni->second;
-                pad->SetNetname( FROM_UTF8( enet->netname.c_str() ) );
                 pad->SetNet( enet->netcode );
             }
         }

pcbnew/legacy_plugin.cpp

@@ -1303,7 +1303,7 @@ void LEGACY_PLUGIN::loadPAD( MODULE* aModule )
 
             // read Netname
             ReadDelimitedText( buf, data, sizeof(buf) );
-            pad->SetNetname( FROM_UTF8( StrPurge( buf ) ) );
+            assert( m_board->FindNet( netcode )->GetNetname() == FROM_UTF8( StrPurge( buf ) ) );
         }
 
         else if( TESTLINE( "Po" ) )         // (Po)sition

pcbnew/pad_edition_functions.cpp

@@ -141,7 +141,6 @@ void PCB_BASE_FRAME::AddPad( MODULE* aModule, bool draw )
 
     // Update the pad properties.
     Import_Pad_Settings( pad, false );
-    pad->SetNetname( wxEmptyString );
     pad->SetNet( 0 );
 
     pad->SetPosition( GetCrossHairPosition() );

pcbnew/pcad2kicadpcb_plugin/pcb.cpp

@@ -914,17 +914,17 @@ void PCB::AddToBoard()
 
     m_board->SetCopperLayerCount( m_layersStackup.GetCount() );
 
-    for( i = 0; i < (int) m_pcbComponents.GetCount(); i++ )
-    {
-        m_pcbComponents[i]->AddToBoard();
-    }
-
     for( i = 0; i < (int) m_pcbNetlist.GetCount(); i++ )
     {
         net = m_pcbNetlist[i];
 
         m_board->AppendNet( new NETINFO_ITEM( m_board, net->m_name, net->m_netCode ) );
     }
+
+    for( i = 0; i < (int) m_pcbComponents.GetCount(); i++ )
+    {
+        m_pcbComponents[i]->AddToBoard();
+    }
 }
 
 } // namespace PCAD2KICAD

pcbnew/pcad2kicadpcb_plugin/pcb_pad.cpp

@@ -273,8 +273,16 @@ void PCB_PAD::AddToModule( MODULE* aModule, int aRotation, bool aEncapsulatedPad
 
         pad->SetAttribute( padType );
 
-        pad->SetNet( 0 );
-        pad->SetNetname( m_net );
+        // Set the proper net code
+        NETINFO_ITEM* netinfo = m_board->FindNet( m_net );
+        if( netinfo == NULL )   // I believe this should not happen, but just in case
+        {
+            // It is a new net
+            netinfo = new NETINFO_ITEM( m_board, m_net, m_board->GetNetCount() );
+            m_board->AppendNet( netinfo );
+        }
+
+        pad->SetNet( netinfo->GetNet() );
     }
 
     if( !aEncapsulatedPad )

pcbnew/pcb_parser.cpp

@@ -2191,7 +2191,7 @@ D_PAD* PCB_PARSER::parseD_PAD() throw( IO_ERROR, PARSE_ERROR )
         case T_net:
             pad->SetNet( parseInt( "net number" ) );
             NeedSYMBOLorNUMBER();
-            pad->SetNetname( FromUTF8() );
+            assert( FromUTF8() == m_board->FindNet( pad->GetNet() )->GetNetname() );
             NeedRIGHT();
             break;
 

pcbnew/xchgmod.cpp

@@ -455,17 +455,13 @@ void PCB_EDIT_FRAME::Exchange_Module( MODULE*            aOldModule,
     // Update pad netnames ( when possible)
     for( D_PAD* pad = aNewModule->Pads(); pad != NULL; pad = pad->Next() )
     {
-        pad->SetNetname( wxEmptyString );
         pad->SetNet( 0 );
         D_PAD*  old_pad = aOldModule->Pads();
 
         for( ; old_pad != NULL; old_pad = old_pad->Next() )
         {
             if( pad->PadNameEqual( old_pad ) )
-            {
-                pad->SetNetname( old_pad->GetNetname() );
                 pad->SetNet( old_pad->GetNet() );
-            }
         }
     }