kicad/pcbnew/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
 */

#ifndef BOARD_CONNECTED_ITEM_H
#define BOARD_CONNECTED_ITEM_H

#include <class_board_item.h>
#include <netinfo.h>
#include <kicad_string.h>

class NETCLASS;
class TRACK;
class D_PAD;

/**
 * BOARD_CONNECTED_ITEM
 * is a base class derived from BOARD_ITEM for items that can be connected
 * and have a net, a netname, a clearance ...
 * mainly: tracks, pads and zones
 * Handle connection info
 */
class BOARD_CONNECTED_ITEM : public BOARD_ITEM
{
public:
    BOARD_CONNECTED_ITEM( BOARD_ITEM* aParent, KICAD_T idtype );

    // Do not create a copy constructor & operator=.
    // The ones generated by the compiler are adequate.

    static inline bool ClassOf( const EDA_ITEM* aItem )
    {
        if( aItem == NULL )
            return false;

        switch( aItem->Type() )
        {
        case PCB_PAD_T:
        case PCB_TRACE_T:
        case PCB_ARC_T:
        case PCB_VIA_T:
        case PCB_ZONE_AREA_T:
            return true;

        default:
            return false;
        }
    }

    ///> @copydoc BOARD_ITEM::IsConnected()
    bool IsConnected() const override
    {
        return true;
    }

    /**
     * Function GetNet
     * Returns NET_INFO object for a given item.
     */
    NETINFO_ITEM* GetNet() const
    {
        return m_netinfo;
    }

    /**
     * Function SetNet
     * Sets a NET_INFO object for the item.
     */
    void SetNet( NETINFO_ITEM* aNetInfo )
    {
        m_netinfo = aNetInfo;
    }

    /**
     * Function GetNetCode
     * @return int - the net code.
     */
    int GetNetCode() const
    {
        return m_netinfo ? m_netinfo->GetNet() : -1;
    }

    /**
     * Sets net using a net code.
     * @param aNetCode is a net code for the new net. It has to exist in NETINFO_LIST held by BOARD.
     * @param aNoAssert if true, do not assert that the net exists.
     * Otherwise, item is assigned to the unconnected net.
     * @return true on success, false if the net did not exist
     * Note also items (in fact pads) not on copper layers will have
     * their net code always set to 0 (not connected)
     */
    bool SetNetCode( int aNetCode, bool aNoAssert );

    void SetNetCode( int aNetCode )
    {
        SetNetCode( aNetCode, false );
    }

    /**
     * Function GetNetname
     * @return wxString - the full netname
     */
    wxString GetNetname() const
    {
        return m_netinfo ? m_netinfo->GetNetname() : wxString();
    }

    /**
     * Function GetNetnameMsg
     * @return wxString - the full netname or "<no net>" in square braces, followed by
     * "(Not Found)" if the netcode is undefined.
     */
    wxString GetNetnameMsg() const
    {
        if( !GetBoard() )
            return wxT( "[** NO BOARD DEFINED **]" );

        wxString netname = GetNetname();

        if( !netname.length() )
            return wxT( "[<no net>]" );
        else if( GetNetCode() < 0 )
            return wxT( "[" + UnescapeString( netname ) + "](" + _( "Not Found" ) + ")" );
        else
            return wxT( "[" + UnescapeString( netname ) + "]" );
    }

    /**
     * Function GetShortNetname
     * @return wxString - the short netname
     */
    wxString GetShortNetname() const
    {
        return m_netinfo->GetShortNetname();
    }

    /**
     * Function GetClearance
     * returns the clearance in internal units.  If \a aItem is not NULL then the
     * returned clearance is the greater of this object's NETCLASS clearance and
     * aItem's NETCLASS clearance.  If \a aItem is NULL, then this objects clearance
     * is returned.
     * @param aLayer the layer in question
     * @param aItem is an optional BOARD_ITEM
     * @param aSource [out] optionally reports the source as a user-readable string
     * @return int - the clearance in internal units.
     */
    virtual int GetClearance( PCB_LAYER_ID aLayer, BOARD_ITEM* aItem = nullptr,
                              wxString* aSource = nullptr ) const;

    /**
     * Function GetRuleClearance
     * returns any rule-based clearance.
     * @param aLayer the current layer under test
     * @param aClearance [out] the clearance value in internal units
     * @param aSource [out] reports the source as a user-readable string
     * @return true if a rule was fired
     */
    virtual bool GetRuleClearance( BOARD_ITEM* aItem, PCB_LAYER_ID aLayer, int* aClearance,
                                   wxString* aSource ) const;

    /**
     * Function GetLocalClearanceOverrides
     * returns any local clearance overrides set in the "classic" (ie: pre-rule) system.
     * @param aSource [out] optionally reports the source as a user-readable string
     * @return int - the clearance in internal units.
     */
    virtual int GetLocalClearanceOverrides( wxString* aSource ) const { return 0; }

    /**
     * Function GetLocalClearance
     * returns any local clearances set in the "classic" (ie: pre-rule) system.  These are
     * things like zone clearance which are NOT an override.
     * @param aSource [out] optionally reports the source as a user-readable string
     * @return int - the clearance in internal units.
     */
    virtual int GetLocalClearance( wxString* aSource ) const { return 0; }

    /**
     * Function GetNetClassPtr
     * returns the NETCLASS for this item.
     *
     * Note: do NOT return a std::shared_ptr from this.  It is used heavily in DRC, and the
     * std::shared_ptr stuff shows up large in performance profiling.
     */
    NETCLASS* GetNetClass() const;

    /**
     * Function GetEffectiveNetclass
     * returns the NETCLASS for this item, or the default netclass if none is defined.
     *
     * Note: do NOT return a std::shared_ptr from this.  It is used heavily in DRC, and the
     * std::shared_ptr stuff shows up large in performance profiling.
     */
    NETCLASS* GetEffectiveNetclass() const;

    /**
     * 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;

    void SetLocalRatsnestVisible( bool aVisible )
    {
        m_localRatsnestVisible = aVisible;
    }

    bool GetLocalRatsnestVisible() const
    {
        return m_localRatsnestVisible;
    }

protected:
    /// Stores all informations about the net that item belongs to
    NETINFO_ITEM* m_netinfo;

private:

    bool m_localRatsnestVisible;
};

#endif  // BOARD_CONNECTED_ITEM_H