sch_item.h

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/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2004 Jean-Pierre Charras, jaen-pierre.charras@gipsa-lab.inpg.com
 * Copyright (C) 2004-2020 KiCad Developers, see change_log.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 SCH_ITEM_H
#define SCH_ITEM_H

#include <unordered_map>
#include <unordered_set>
#include <vector>

#include <eda_item.h>
#include <plotter.h>      // for PLOT_DASH_TYPE definition

#include <gal/color4d.h>

#include <default_values.h>
#include <sch_sheet_path.h>
#include <render_settings.h>
#include <netclass.h>

class CONNECTION_GRAPH;
class SCH_CONNECTION;
class SCH_SHEET_PATH;
class SCHEMATIC;
class LINE_READER;
class SCH_EDIT_FRAME;
class wxFindReplaceData;
class PLOTTER;
class NETLIST_OBJECT;
class NETLIST_OBJECT_LIST;

using KIGFX::RENDER_SETTINGS;


enum FIELDS_AUTOPLACED
{
    FIELDS_AUTOPLACED_NO = 0,
    FIELDS_AUTOPLACED_AUTO,
    FIELDS_AUTOPLACED_MANUAL
};


enum DANGLING_END_T
{
    UNKNOWN = 0,
    WIRE_START_END,
    WIRE_END_END,
    BUS_START_END,
    BUS_END_END,
    JUNCTION_END,
    PIN_END,
    LABEL_END,
    BUS_ENTRY_END,
    WIRE_ENTRY_END,
    SHEET_LABEL_END,
    NO_CONNECT_END,
};


class DANGLING_END_ITEM
{
private:
    EDA_ITEM*       m_item;

    wxPoint         m_pos;

    DANGLING_END_T  m_type;

    const EDA_ITEM* m_parent;

public:
    DANGLING_END_ITEM( DANGLING_END_T aType, EDA_ITEM* aItem, const wxPoint& aPosition )
    {
        m_item = aItem;
        m_type = aType;
        m_pos = aPosition;
        m_parent = aItem;
    }

    DANGLING_END_ITEM( DANGLING_END_T aType, EDA_ITEM* aItem,
            const wxPoint& aPosition, const EDA_ITEM* aParent )
    {
        m_item = aItem;
        m_type = aType;
        m_pos = aPosition;
        m_parent = aParent;
    }

    bool operator==( const DANGLING_END_ITEM& aB )
    {
        return GetItem() == aB.GetItem()
            && GetPosition() == aB.GetPosition()
            && GetType() == aB.GetType()
            && GetParent() == aB.GetParent();
    }

    bool operator!=( const DANGLING_END_ITEM& aB )
    {
        return GetItem() != aB.GetItem()
                || GetPosition() != aB.GetPosition()
                || GetType() != aB.GetType()
                || GetParent() != aB.GetParent();;
    }

    bool operator<( const DANGLING_END_ITEM& rhs ) const
    {
        return( m_pos.x < rhs.m_pos.x || ( m_pos.x == rhs.m_pos.x && m_pos.y < rhs.m_pos.y )
                || ( m_pos == rhs.m_pos && m_item < rhs.m_item ) );
    }

    wxPoint GetPosition() const { return m_pos; }
    EDA_ITEM* GetItem() const { return m_item; }
    const EDA_ITEM* GetParent() const { return m_parent; }
    DANGLING_END_T GetType() const { return m_type; }
};


typedef std::unordered_set<SCH_ITEM*> SCH_ITEM_SET;


class STROKE_PARAMS
{
    int m_width;
    PLOT_DASH_TYPE m_plotstyle;
    COLOR4D m_color;

public:
    STROKE_PARAMS( int aWidth = Mils2iu( DEFAULT_LINE_THICKNESS ),
                   PLOT_DASH_TYPE aPlotStyle = PLOT_DASH_TYPE::DEFAULT,
                   const COLOR4D& aColor = COLOR4D::UNSPECIFIED ) :
            m_width( aWidth ),
            m_plotstyle( aPlotStyle ),
            m_color( aColor )
    {
    }

    int GetWidth() const { return m_width; }
    void SetWidth( int aWidth ) { m_width = aWidth; }

    PLOT_DASH_TYPE GetPlotStyle() const { return m_plotstyle; }
    void SetPlotStyle( PLOT_DASH_TYPE aPlotStyle ) { m_plotstyle = aPlotStyle; }

    COLOR4D GetColor() const { return m_color; }
    void SetColor( const COLOR4D& aColor ) { m_color = aColor; }

    bool operator!=( const STROKE_PARAMS& aOther )
    {
        return m_width != aOther.m_width
                || m_plotstyle != aOther.m_plotstyle
                || m_color != aOther.m_color;
    }
};


class SCH_ITEM : public EDA_ITEM
{
    friend class CONNECTION_GRAPH;

protected:
    SCH_LAYER_ID      m_layer;
    EDA_ITEMS         m_connections;      // List of items connected to this item.
    FIELDS_AUTOPLACED m_fieldsAutoplaced; // indicates status of field autoplacement
    wxPoint           m_storedPos;        // a temporary variable used in some move commands
                                          // to store a initial pos of the item or mouse cursor

    std::unordered_map<SCH_SHEET_PATH, SCH_ITEM_SET> m_connected_items;

    std::unordered_map<SCH_SHEET_PATH, SCH_CONNECTION*> m_connection_map;

    bool              m_connectivity_dirty;

public:
    SCH_ITEM( EDA_ITEM* aParent, KICAD_T aType );

    SCH_ITEM( const SCH_ITEM& aItem );

    ~SCH_ITEM();

    virtual wxString GetClass() const override
    {
        return wxT( "SCH_ITEM" );
    }

    virtual void SwapData( SCH_ITEM* aItem );

    SCH_ITEM* Duplicate( bool doClone = false ) const;

    virtual bool IsMovableFromAnchorPoint() { return true; }

    wxPoint& GetStoredPos() { return m_storedPos; }
    void     SetStoredPos( wxPoint aPos ) { m_storedPos = aPos; }

    SCHEMATIC* Schematic() const;

    virtual bool IsLocked() const { return false; }

    virtual void SetLocked( bool aLocked ) {}

    virtual bool IsHypertext() const { return false; }

    virtual void DoHypertextMenu( EDA_DRAW_FRAME* aFrame ) { }

    SCH_LAYER_ID GetLayer() const { return m_layer; }

    void SetLayer( SCH_LAYER_ID aLayer )  { m_layer = aLayer; }

    void ViewGetLayers( int aLayers[], int& aCount ) const override;

    virtual int GetPenWidth() const { return 0; }

    virtual void Print( RENDER_SETTINGS* aSettings, const wxPoint&  aOffset ) = 0;

    virtual void Move( const wxPoint& aMoveVector ) = 0;

    virtual void MirrorY( int aYaxis_position ) = 0;

    virtual void MirrorX( int aXaxis_position ) = 0;

    virtual void Rotate( wxPoint aPosition ) = 0;

    virtual void GetEndPoints( std::vector< DANGLING_END_ITEM >& aItemList ) {}

    virtual bool UpdateDanglingState( std::vector<DANGLING_END_ITEM>& aItemList,
                                      const SCH_SHEET_PATH* aPath = nullptr )
    {
        return false;
    }

    virtual bool IsDangling() const { return false; }

    virtual bool CanConnect( const SCH_ITEM* aItem ) const { return m_layer == aItem->GetLayer(); }

    virtual bool IsConnectable() const { return false; }

    virtual bool IsPointClickableAnchor( const wxPoint& aPos ) const { return false; }

    virtual std::vector<wxPoint> GetConnectionPoints() const { return {}; }

    void ClearConnections() { m_connections.clear(); }

    bool IsConnected( const wxPoint& aPoint ) const;

    SCH_CONNECTION* Connection( const SCH_SHEET_PATH* aSheet = nullptr ) const;

    SCH_ITEM_SET& ConnectedItems( const SCH_SHEET_PATH& aPath );

    void AddConnectionTo( const SCH_SHEET_PATH& aPath, SCH_ITEM* aItem );

    SCH_CONNECTION* InitializeConnection( const SCH_SHEET_PATH& aPath, CONNECTION_GRAPH* aGraph );

    virtual bool ConnectionPropagatesTo( const EDA_ITEM* aItem ) const { return true; }

    bool IsConnectivityDirty() { return m_connectivity_dirty; }

    void SetConnectivityDirty( bool aDirty = true ) { m_connectivity_dirty = aDirty; }

    NETCLASSPTR NetClass( const SCH_SHEET_PATH* aSheet = nullptr ) const;

    FIELDS_AUTOPLACED GetFieldsAutoplaced() const { return m_fieldsAutoplaced; }

    void ClearFieldsAutoplaced() { m_fieldsAutoplaced = FIELDS_AUTOPLACED_NO; }

    void AutoAutoplaceFields( SCH_SCREEN* aScreen )
    {
        if( GetFieldsAutoplaced() )
            AutoplaceFields( aScreen, GetFieldsAutoplaced() == FIELDS_AUTOPLACED_MANUAL );
    }

    virtual void AutoplaceFields( SCH_SCREEN* aScreen, bool aManual ) { }

    virtual void RunOnChildren( const std::function<void( SCH_ITEM* )>& aFunction ) { }

    virtual bool HasLineStroke() const { return false; }

    virtual STROKE_PARAMS GetStroke() const { wxCHECK( false, STROKE_PARAMS() ); }

    virtual void SetStroke( const STROKE_PARAMS& aStroke ) { wxCHECK( false, /* void */ ); }

    virtual void Plot( PLOTTER* aPlotter );

    virtual bool operator <( const SCH_ITEM& aItem ) const;

private:
    virtual bool doIsConnected( const wxPoint& aPosition ) const { return false; }
};

#endif /* SCH_ITEM_H */