/******************************
 *  drawpanel.h:
 *  define class WinEDA_DrawPanel
 *************************************/

/* Doit etre inclus dans "wxstruch.h"
 */

#ifndef  PANEL_WXSTRUCT_H
#define  PANEL_WXSTRUCT_H

#include "colors.h"
#include "base_struct.h"

class WinEDA_DrawFrame;
class BASE_SCREEN;
class PCB_SCREEN;


/****************************************************/
/* classe representant un ecran graphique de dessin */
/****************************************************/

class WinEDA_DrawPanel : public wxScrolledWindow
{
public:
    WinEDA_DrawFrame* m_Parent;
    EDA_Rect          m_ClipBox;            // the clipbox used in screen redraw (usually gives the visible area in internal units)
    wxPoint           m_CursorStartPos;     // utile dans controles du mouvement curseur
    int  m_ScrollButt_unit;                 //	Valeur de l'unite de scroll en pixels pour les boutons de scroll

    bool m_AbortRequest;                    // Flag d'arret de commandes longues
    bool m_AbortEnable;                     // TRUE si menu ou bouton Abort doit etre affiche

    bool m_AutoPAN_Enable;                  // TRUE to allow auto pan
    bool m_AutoPAN_Request;                 // TRUE to request an auto pan (will be made only if m_AutoPAN_Enable = true)

    int  m_IgnoreMouseEvents;               //  when non-zero (true), then ignore mouse events

    bool m_Block_Enable;                    // TRUE to accept Block Commands
    int  m_CanStartBlock;                   // >= 0 (or >= n) if a block can start
    bool m_PrintIsMirrored;                 // True when drawing in mirror mode. Used in draw arc function,
                                            // because arcs are oriented, and in mirror mode, orientations are reversed
    // usefull to avoid false start block in certain cases (like switch from a sheet to an other scheet
    int  m_PanelDefaultCursor;              // Current mouse cursor default shape id for this window
    int  m_PanelCursor;                     // Current mouse cursor shape id for this window
    int  m_CursorLevel;                     // Index for cursor redraw in XOR mode

    /* Cursor management (used in editing functions) */
    void (*ManageCurseur)( WinEDA_DrawPanel* panel, wxDC* DC, bool erase );              /* Fonction d'affichage sur deplacement souris
                                                                                          *  si erase : effacement ancien affichage */
    void (*ForceCloseManageCurseur)( WinEDA_DrawPanel* panel, wxDC* DC );              /* Fonction de fermeture forc�
                                                                                        *  de la fonction ManageCurseur */

public:

    // Constructor and destructor
    WinEDA_DrawPanel( WinEDA_DrawFrame* parent, int id, const wxPoint& pos, const wxSize& size );
    ~WinEDA_DrawPanel() { }

    /****************************/
    BASE_SCREEN* GetScreen();


    void         PrepareGraphicContext( wxDC* DC );
    bool         IsPointOnDisplay( wxPoint ref_pos );
    void         OnPaint( wxPaintEvent& event );
    void         OnSize( wxSizeEvent& event );
    void         SetBoundaryBox();
    void         ReDraw( wxDC* DC, bool erasebg = TRUE );
    void         PrintPage( wxDC* DC, bool Print_Sheet_Ref, int PrintMask, bool aPrintMirrorMode );
    void         DrawBackGround( wxDC* DC );
    void         m_Draw_Auxiliary_Axis( wxDC* DC, int drawmode );
    void         OnEraseBackground( wxEraseEvent& event );
    void         OnActivate( wxActivateEvent& event );

    /* Mouse and keys events */
    void         OnMouseWheel( wxMouseEvent& event );
    void         OnMouseEvent( wxMouseEvent& event );
    void         OnMouseLeaving( wxMouseEvent& event );
    void         OnKeyEvent( wxKeyEvent& event );

    void         OnPan( wxCommandEvent& event );

    /*************************/

    void         EraseScreen( wxDC* DC );
    void         OnScrollWin( wxCommandEvent& event );
    void         OnScroll( wxScrollWinEvent& event );

    void         SetZoom( int mode );
    int          GetZoom();
    void         SetGrid( const wxRealPoint& size );
    wxRealPoint  GetGrid();

    void         AddMenuZoom( wxMenu* MasterMenu );
    bool         OnRightClick( wxMouseEvent& event );
    void         OnPopupGridSelect( wxCommandEvent& event );
    void         Process_Special_Functions( wxCommandEvent& event );

    /** Function CursorRealPosition
     * @return the position in user units of location ScreenPos
     * @param ScreenPos = the screen (in pixel) position co convert
     */
    wxPoint      CursorRealPosition( const wxPoint& ScreenPos );

    /** Function CursorScreenPosition
     * @return the curseur current position in pixels in the screen draw area
     */
    wxPoint      CursorScreenPosition();

    /**
     * Function PostDirtyRect
     * appends the given rectangle in pcb units to the DrawPanel's invalid
     * region list so that very soon (but not immediately), this rectangle
     * along with any other recently posted rectangles is redrawn.  Conversion
     * to pixels is done in here.
     * @param aRect The rectangle to append, it must be orthogonal
     *   (vertical and horizontal edges only), and it must be [,) in nature, i.e.
     *   [pos, dim) == [inclusive, exclusive)
     */
    void         PostDirtyRect( EDA_Rect aRect );

    /**
     * Function ConvertPcbUnitsToPixelsUnits
     * converts pos and size of the given EDA_Rect to pos and size in pixels,
     * relative to the current draw area (origin 0,0 is the left top visible
     * corner of draw area) according to the current scroll and zoom.
     * @param aRect = the rectangle to convert
     */
    void         ConvertPcbUnitsToPixelsUnits( EDA_Rect* aRect );

    /**
     * Function ConvertPcbUnitsToPixelsUnits
     * converts a given wxPoint position (in internal units) to units of pixels,
     * relative to the current draw area (origin 0,0 is the left top visible
     * corner of draw area) according to the current scroll and zoom.
     * @param aPosition = the position to convert
     */
    void         ConvertPcbUnitsToPixelsUnits( wxPoint* aPosition );

    wxPoint      GetScreenCenterRealPosition( void );
    void         MouseToCursorSchema();
    void         MouseTo( const wxPoint& Mouse );

    /* Cursor functions */
    void         Trace_Curseur( wxDC* DC, int color = WHITE );  // Draw the user cursor (grid cursor)
    void         CursorOff( wxDC* DC );                         // remove the grid cursor from the display
    void         CursorOn( wxDC* DC );                          // display the grid cursor

    DECLARE_EVENT_TABLE()
};


#endif  /* #ifndef PANEL_WXSTRUCT_H */