kicad/pcbnew/plugins/eagle/eagle_plugin.h

#ifndef EAGLE_PLUGIN_H_
#define EAGLE_PLUGIN_H_

/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2012 SoftPLC Corporation, Dick Hollenbeck <dick@softplc.com>
 * Copyright (C) 2012-2020 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
 */

#include <io_mgr.h>
#include <layers_id_colors_and_visibility.h>
#include <plugins/eagle/eagle_parser.h>
#include <plugins/common/plugin_common_layer_mapping.h>

#include <map>
#include <tuple>
#include <wx/xml/xml.h>

class PAD;
class FP_TEXT;
class ZONE;

typedef std::map<wxString, FOOTPRINT*> FOOTPRINT_MAP;
typedef std::vector<ZONE*>             ZONES;
typedef std::map<wxString, ENET>        NET_MAP;
typedef NET_MAP::const_iterator         NET_MAP_CITER;


/// subset of eagle.drawing.board.designrules in the XML document
struct ERULES
{
    ///< percent over 100%.  0-> not elongated, 100->twice as wide as is tall
    ///< Goes into making a scaling factor for "long" pads.
    int    psElongationLong;

    int    psElongationOffset;  ///< the offset of the hole within the "long" pad.

    ///< solder mask, expressed as percentage of the smaller pad/via dimension
    double mvStopFrame;

    ///< solderpaste mask, expressed as percentage of the smaller pad/via dimension
    double mvCreamFrame;
    int    mlMinStopFrame;      ///< solder mask, minimum size (Eagle mils, here nanometers)
    int    mlMaxStopFrame;      ///< solder mask, maximum size (Eagle mils, here nanometers)
    int    mlMinCreamFrame;     ///< solder paste mask, minimum size (Eagle mils, here nanometers)
    int    mlMaxCreamFrame;     ///< solder paste mask, maximum size (Eagle mils, here nanometers)

    int    psTop;               ///< Shape of the top pads
    int    psBottom;            ///< Shape of the bottom pads
    int    psFirst;             ///< Shape of the first pads

    double srRoundness;         ///< corner rounding ratio for SMD pads (percentage)

    ///< corner rounding radius, minimum size (Eagle mils, here nanometers)
    int    srMinRoundness;

    ///< corner rounding radius, maximum size (Eagle mils, here nanometers)
    int    srMaxRoundness;

    double rvPadTop;            ///< top pad size as percent of drill size
    // double   rvPadBottom;    ///< bottom pad size as percent of drill size

    double rlMinPadTop;         ///< minimum copper annulus on through hole pads
    double rlMaxPadTop;         ///< maximum copper annulus on through hole pads

    double rvViaOuter;          ///< copper annulus is this percent of via hole
    double rlMinViaOuter;       ///< minimum copper annulus on via
    double rlMaxViaOuter;       ///< maximum copper annulus on via
    double mdWireWire;          ///< wire to wire spacing I presume.


    ERULES() :
        psElongationLong    ( 100 ),
        psElongationOffset  ( 0 ),

        mvStopFrame         ( 1.0 ),
        mvCreamFrame        ( 0.0 ),
        mlMinStopFrame      ( Mils2iu( 4.0 ) ),
        mlMaxStopFrame      ( Mils2iu( 4.0 ) ),
        mlMinCreamFrame     ( Mils2iu( 0.0 ) ),
        mlMaxCreamFrame     ( Mils2iu( 0.0 ) ),

        psTop               ( EPAD::UNDEF ),
        psBottom            ( EPAD::UNDEF ),
        psFirst             ( EPAD::UNDEF ),

        srRoundness         ( 0.0 ),
        srMinRoundness      ( Mils2iu( 0.0 ) ),
        srMaxRoundness      ( Mils2iu( 0.0 ) ),

        rvPadTop            ( 0.25 ),
        // rvPadBottom      ( 0.25 ),
        rlMinPadTop         ( Mils2iu( 10 ) ),
        rlMaxPadTop         ( Mils2iu( 20 ) ),

        rvViaOuter          ( 0.25 ),
        rlMinViaOuter       ( Mils2iu( 10 ) ),
        rlMaxViaOuter       ( Mils2iu( 20 ) ),
        mdWireWire          ( 0 )
    {}

    void parse( wxXmlNode* aRules );
};


/**
 * Works with Eagle 6.x XML board files and footprints to implement the Pcbnew #PLUGIN API
 * or a portion of it.
 */
class EAGLE_PLUGIN : public PLUGIN, public LAYER_REMAPPABLE_PLUGIN
{
public:
    const wxString PluginName() const override;

    BOARD* Load( const wxString& aFileName, BOARD* aAppendToMe,
                 const PROPERTIES* aProperties = nullptr, PROJECT* aProject = nullptr ) override;

    const wxString GetFileExtension() const override;

    void FootprintEnumerate( wxArrayString& aFootprintNames, const wxString& aLibraryPath,
                             bool aBestEfforts, const PROPERTIES* aProperties = nullptr) override;

    FOOTPRINT* FootprintLoad( const wxString& aLibraryPath, const wxString& aFootprintName,
                              const PROPERTIES* aProperties = nullptr ) override;

    long long GetLibraryTimestamp( const wxString& aLibraryPath ) const override
    {
        return getModificationTime( aLibraryPath ).GetValue().GetValue();
    }

    bool IsFootprintLibWritable( const wxString& aLibraryPath ) override
    {
        return false;   // until someone writes others like FootprintSave(), etc.
    }

    void FootprintLibOptions( PROPERTIES* aProperties ) const override;

    typedef int BIU;

    EAGLE_PLUGIN();
    ~EAGLE_PLUGIN();

    /**
     * Return the automapped layers.
     *
     * The callback needs to have the context of the current board so it can
     * correctly determine copper layer mapping. Thus, it is not static and is
     * expected to be bind to an instance of EAGLE_PLUGIN.
     *
     * @param aInputLayerDescriptionVector
     * @return Auto-mapped layers
     */
    std::map<wxString, PCB_LAYER_ID> DefaultLayerMappingCallback(
            const std::vector<INPUT_LAYER_DESC>& aInputLayerDescriptionVector );

private:
    typedef std::vector<ELAYER>     ELAYERS;
    typedef ELAYERS::const_iterator EITER;

    int                              m_cu_map[17];     ///< map eagle to KiCad, cu layers only.
    std::map<int, ELAYER>            m_eagleLayers;    ///< Eagle layer data stored by layer number
    std::map<wxString, int>          m_eagleLayersIds; ///< Eagle layer ids stored by layer name
    std::map<wxString, PCB_LAYER_ID> m_layer_map;      ///< Map of Eagle layers to KiCad layers

    ERULES*       m_rules;          ///< Eagle design rules.
    XPATH*        m_xpath;          ///< keeps track of what we are working on within
                                    ///< XML document during a Load().

    int           m_hole_count;     ///< generates unique footprint names from eagle "hole"s.

    NET_MAP       m_pads_to_nets;   ///< net list

    FOOTPRINT_MAP m_templates;      ///< is part of a FOOTPRINT factory that operates using copy
                                    ///< construction.
                                    ///< lookup key is either libname.packagename or simply
                                    ///< packagename if FootprintLoad() or FootprintEnumberate()

    const PROPERTIES* m_props;      ///< passed via Save() or Load(), no ownership, may be NULL.
    BOARD*      m_board;            ///< which BOARD is being worked on, no ownership here

    int         m_min_trace;        ///< smallest trace we find on Load(), in BIU.
    int         m_min_hole;         ///< smallest diameter hole we find on Load(), in BIU.
    int         m_min_via;          ///< smallest via we find on Load(), in BIU.
    int         m_min_annulus;      ///< smallest via annulus we find on Load(), in BIU.

    wxString    m_lib_path;
    wxDateTime  m_mod_time;

    /// initialize PLUGIN like a constructor would, and futz with fresh BOARD if needed.
    void    init( const PROPERTIES* aProperties );

    void    clear_cu_map();

    /// Convert an Eagle distance to a KiCad distance.
    int kicad_y( const ECOORD& y ) const { return -y.ToPcbUnits(); }
    int kicad_x( const ECOORD& x ) const { return x.ToPcbUnits(); }

    /// create a font size (fontz) from an eagle font size scalar and KiCad font thickness
    wxSize  kicad_fontz( const ECOORD& d, int aTextThickness ) const;

    /// Generate mapping between Eagle na KiCAD layers
    void mapEagleLayersToKicad();

    /// Convert an Eagle layer to a KiCad layer.
    PCB_LAYER_ID kicad_layer( int aLayer ) const;

    /// Get default KiCAD layer corresponding to an Eagle layer of the board,
    /// a set of sensible layer mapping options and required flag
    std::tuple<PCB_LAYER_ID, LSET, bool> defaultKicadLayer( int aEagleLayer ) const;

    /// Get Eagle layer name by its number
    const wxString& eagle_layer_name( int aLayer ) const;

    /// Get Eagle layer number by its name
    int eagle_layer_id( const wxString& aLayerName ) const;

    /// This PLUGIN only caches one footprint library, this determines which one.
    void    cacheLib( const wxString& aLibraryPath );

    /// get a file's  or dir's modification time.
    static wxDateTime getModificationTime( const wxString& aPath );

    // all these loadXXX() throw IO_ERROR or ptree_error exceptions:

    void loadAllSections( wxXmlNode* aDocument );
    void loadDesignRules( wxXmlNode* aDesignRules );
    void loadLayerDefs( wxXmlNode* aLayers );
    void loadPlain( wxXmlNode* aPlain );
    void loadSignals( wxXmlNode* aSignals );

    /**
     * Load the Eagle "library" XML element, which can occur either under a "libraries"
     * element (if a *.brd file) or under a "drawing" element if a *.lbr file.
     *
     * @param aLib is the portion of the loaded XML document tree that is the "library"
     *             element.
     * @param aLibName is a pointer to the library name or NULL.  If NULL this means
     *                 we are loading a *.lbr not a *.brd file and the key used in m_templates
     *                 is to exclude the library name.
     */
    void loadLibrary( wxXmlNode* aLib, const wxString* aLibName );

    void loadLibraries( wxXmlNode* aLibs );
    void loadElements( wxXmlNode* aElements );

    /**
     * Load a copper or keepout polygon and adds it to the board.
     *
     * @return The loaded zone or nullptr if was not processed.
     */
    ZONE* loadPolygon( wxXmlNode* aPolyNode );

    void orientFootprintAndText( FOOTPRINT* aFootprint, const EELEMENT& e, const EATTR* aNameAttr,
                                 const EATTR* aValueAttr );

    void orientFPText( FOOTPRINT* aFootprint, const EELEMENT& e, FP_TEXT* aFPText,
                       const EATTR* aAttr );


    /// move the BOARD into the center of the page
    void centerBoard();

    /**
     * Create a FOOTPRINT from an Eagle package.
     */
    FOOTPRINT* makeFootprint( wxXmlNode* aPackage, const wxString& aPkgName );

    void packageWire( FOOTPRINT* aFootprint, wxXmlNode* aTree ) const;
    void packagePad( FOOTPRINT* aFootprint, wxXmlNode* aTree );
    void packageText( FOOTPRINT* aFootprint, wxXmlNode* aTree ) const;
    void packageRectangle( FOOTPRINT* aFootprint, wxXmlNode* aTree ) const;
    void packagePolygon( FOOTPRINT* aFootprint, wxXmlNode* aTree ) const;
    void packageCircle( FOOTPRINT* aFootprint, wxXmlNode* aTree ) const;

    /**
     * @param aFootprint The KiCad footprint to which to assign the hole.
     * @param aTree The Eagle XML node that is of type "hole".
     * @param aCenter If true, center the hole in the footprint and offset the footprint position.
     */
    void packageHole( FOOTPRINT* aFootprint, wxXmlNode* aTree, bool aCenter ) const;
    void packageSMD( FOOTPRINT* aFootprint, wxXmlNode* aTree ) const;

    ///> Handles common pad properties
    void transferPad( const EPAD_COMMON& aEaglePad, PAD* aPad ) const;

    ///> Deletes the footprint templates list
    void deleteTemplates();
};

#endif  // EAGLE_PLUGIN_H_