/********************************************/
/* Definitions for the EESchema program:    */
/********************************************/

#ifndef CLASS_DRAWSHEET_H
#define CLASS_DRAWSHEET_H

#include "base_struct.h"

extern SCH_SHEET* g_RootSheet;

/**
 * Pin (label) used in sheets to create hierarchical schematics.
 *
 * A SCH_SHEET_PIN is used to create a hierarchical sheet in the same way a
 * pin is used in a component.  It connects the objects in the sheet object
 * to the objects in the schematic page to the objects in the page that is
 * represented by the sheet.  In a sheet object, a SCH_SHEET_PIN must be
 * connected to a wire, bus, or label.  In the schematic page represented by
 * the sheet, it corresponds to a hierarchical label.
 */
class SCH_SHEET_PIN : public SCH_ITEM, public EDA_TextStruct
{
public:
    int  m_Edge, m_Shape;
    bool m_IsDangling;  // TRUE non connected
    int  m_Number;      // used to numbered labels when writing data on file .
                        // m_Number >= 2
                        // value 0 is for sheet name and 1 for sheet filename

public: SCH_SHEET_PIN( SCH_SHEET* parent,
                       const wxPoint& pos = wxPoint( 0, 0 ),
                       const wxString& text = wxEmptyString );

    ~SCH_SHEET_PIN() { }

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


    SCH_SHEET_PIN* GenCopy();

    SCH_SHEET_PIN* Next()
    {
        return ( SCH_SHEET_PIN*) Pnext;
    }

    void Place( WinEDA_SchematicFrame* frame,
                wxDC*                  DC );
    void Draw( WinEDA_DrawPanel* panel,
               wxDC*             DC,
               const wxPoint&    offset,
               int               draw_mode,
               int               Color = -1 );

    /**
     * Function Save
     * writes the data structures for this object out to a FILE in "*.sch"
     * format.
     * @param aFile The FILE to write to.
     * @return bool - true if success writing else false.
     */
    bool        Save( FILE* aFile ) const;

#if defined(DEBUG)

    // comment inherited by Doxygen from Base_Struct
    void        Show( int nestLevel, std::ostream& os );

#endif

    /** Function GetPenSize
     * @return the size of the "pen" that be used to draw or plot this item
     */
    virtual int GetPenSize();

    /** function CreateGraphicShape
     * Calculates the graphic shape (a polygon) associated to the text
     * @param aCorner_list = list to fill with polygon corners coordinates
     * @param Pos = Position of the shape
     */
    void        CreateGraphicShape( std::vector <wxPoint>& aCorner_list,
                                    const wxPoint&         Pos );

    // Geometric transforms (used in block operations):

    /** virtual function Move
     * move item to a new position.
     * @param aMoveVector = the displacement vector
     */
    virtual void Move( const wxPoint& aMoveVector )
    {
        m_Pos += aMoveVector;
    }


    /** virtual function Mirror_Y
     * mirror item relative to an Y axis
     * @param aYaxis_position = the y axis position
     */
    virtual void Mirror_Y( int aYaxis_position )
    {
        m_Edge   = m_Edge ? 0 : 1;
        m_Pos.x -= aYaxis_position;
        NEGATE(  m_Pos.x );
        m_Pos.x += aYaxis_position;
    }
};


/* class SCH_SHEET
 * This class is the sheet symbol placed in a schematic, and is the entry point
 * for a sub schematic
 */

class SCH_SHEET : public SCH_ITEM
{
public:
    wxString m_SheetName;               /* this is equivalent to C101 for
                                         * components: it is stored in F0 ...
                                         * of the file. */
private:
    wxString m_FileName;                /*also in SCH_SCREEN (redundant),
                                         * but need it here for loading after
                                         * reading the sheet description from
                                         * file. */
public:
    int         m_SheetNameSize;        /* Size (height) of the text, used to
                                         * draw the sheet name */
    int         m_FileNameSize;         /* Size (height) of the text, used to
                                         * draw the file name */
    wxPoint     m_Pos;
    wxSize      m_Size;                 /* Position and Size of *sheet symbol */
    int         m_Layer;
    SCH_SHEET_PIN* m_Label;             /* Points Be connection, linked
                                         * list.*/
    int         m_NbLabel;              /* Pins sheet (corresponding to
                                         * hierarchical labels) count */
    SCH_SCREEN* m_AssociatedScreen;     /* Associated Screen which
                                         * handle the physical data
                                         * In complex hierarchies we
                                         * can have many SCH_SHEET
                                         * using the same data
                                         */

public:
    SCH_SHEET( const wxPoint& pos = wxPoint( 0, 0 ) );
    ~SCH_SHEET();
    virtual wxString GetClass() const
    {
        return wxT( "SCH_SHEET" );
    }


    /**
     * Function Save
     * writes the data structures for this object out to a FILE in "*.sch"
     * format.
     * @param aFile The FILE to write to.
     * @return bool - true if success writing else false.
     */
    bool         Save( FILE* aFile ) const;

    void         Place( WinEDA_SchematicFrame* frame, wxDC* DC );
    SCH_SHEET*   GenCopy();
    void         DisplayInfo( WinEDA_DrawFrame* frame );

    /** Function CleanupSheet
     * Delete pinsheets which are not corresponding to a hierarchical label
     * @param aRedraw = true to redraw Sheet
     * @param aFrame = the schematic frame
     */
    void         CleanupSheet( WinEDA_SchematicFrame* frame, bool aRedraw );

    /** Function GetPenSize
     * @return the size of the "pen" that be used to draw or plot this item
     */
    virtual int  GetPenSize();

    /** Function Draw
     *  Draw the hierarchical sheet shape
     *  @param aPanel = the current DrawPanel
     *  @param aDc = the current Device Context
     *  @param aOffset = draw offset (usually wxPoint(0,0))
     *  @param aDrawMode = draw mode
     *  @param aColor = color used to draw sheet. Usually -1 to use the normal
     * color for sheet items
     */
    void         Draw( WinEDA_DrawPanel* aPanel,
                       wxDC*             aDC,
                       const wxPoint&    aOffset,
                       int               aDrawMode,
                       int               aColor = -1 );

    /** Function HitTest
     * @return true if the point aPosRef is within item area
     * @param aPosRef = a wxPoint to test
     */
    bool     HitTest( const wxPoint& aPosRef );

    /** Function GetBoundingBox
     *  @return an EDA_Rect giving the bounding box of the sheet
     */
    EDA_Rect GetBoundingBox();

    void     SwapData( SCH_SHEET* copyitem );

    /** Function ComponentCount
     *  count our own components, without the power components.
     *  @return the component count.
     */
    int      ComponentCount();

    /** Function Load.
     *  for the sheet: load the file m_FileName
     *  if a screen already exists, the file is already read.
     *  m_AssociatedScreen point on the screen, and its m_RefCount is
     * incremented
     *  else creates a new associated screen and load the data file.
     *  @param aFrame = a WinEDA_SchematicFrame pointer to the maim schematic
     * frame
     *  @return true if OK
     */
    bool     Load( WinEDA_SchematicFrame* aFrame );

    /** Function SearchHierarchy
     *  search the existing hierarchy for an instance of screen "FileName".
     *  @param aFilename = the filename to find
     *  @param aFilename = a location to return a pointer to the screen (if
     * found)
     *  @return bool if found, and a pointer to the screen
     */
    bool     SearchHierarchy( wxString aFilename, SCH_SCREEN** aScreen );

    /** Function LocatePathOfScreen
     *  search the existing hierarchy for an instance of screen "FileName".
     *  don't bother looking at the root sheet - it must be unique,
     *  no other references to its m_AssociatedScreen otherwise there would be
     *  loops
     *  in the hierarchy.
     *  @param  aScreen = the SCH_SCREEN* screen that we search for
     *  @param aList = the SCH_SHEET_PATH*  that must be used
     *  @return true if found
     */
    bool     LocatePathOfScreen( SCH_SCREEN*     aScreen,
                                 SCH_SHEET_PATH* aList );

    /** Function CountSheets
     * calculates the number of sheets found in "this"
     * this number includes the full subsheets count
     * @return the full count of sheets+subsheets contained by "this"
     */
    int      CountSheets();

    /** Function GetFileName
     * return the filename corresponding to this sheet
     * @return a wxString containing the filename
     */
    wxString GetFileName( void );

    // Set a new filename without changing anything else
    void             SetFileName( const wxString& aFilename )
    {
        m_FileName = aFilename;
    }


    /** Function ChangeFileName
     * Set a new filename and manage data and associated screen
     * The main difficulty is the filename change in a complex hierarchy.
     * - if new filename is not already used: change to the new name (and if an
     *   existing file is found, load it on request)
     * - if new filename is already used (a complex hierarchy) : reference the
     *   sheet.
     * @param aFileName = the new filename
     * @param aFrame = the schematic frame
     */
    bool ChangeFileName( WinEDA_SchematicFrame* aFrame,
                         const wxString&        aFileName );

    //void      RemoveSheet(SCH_SHEET* sheet);
    //to remove a sheet, just delete it
    //-- the destructor should take care of everything else.

    // Geometric transforms (used in block operations):

    /** virtual function Move
     * move item to a new position.
     * @param aMoveVector = the displacement vector
     */
    virtual void Move( const wxPoint& aMoveVector )
    {
        m_Pos += aMoveVector;
        SCH_SHEET_PIN* label = m_Label;
        while( label != NULL )
        {
            label->Move( aMoveVector );
            label = label->Next();
        }
    }


    /** virtual function Mirror_Y
     * mirror item relative to an Y axis
     * @param aYaxis_position = the y axis position
     */
    virtual void Mirror_Y( int aYaxis_position );

#if defined(DEBUG)

    // comment inherited by Doxygen from Base_Struct
    void         Show( int nestLevel, std::ostream& os );

#endif
};

#endif /* CLASS_DRAWSHEET_H */