kicad/share/drawpanel.cpp

/******************************************/
/* drawpanel.cpp - WinEDA_DrawPanel class */
/******************************************/


#ifdef __GNUG__
#pragma implementation
#endif

#include "fctsys.h"
#include "common.h"

#include "macros.h"
#include "id.h"

// defines locaux
#define CURSOR_SIZE 12           // Cursor size in pixels

// table des evenements captes par un WinEDA_DrawPanel
BEGIN_EVENT_TABLE( WinEDA_DrawPanel, EDA_DRAW_PANEL )
    EVT_LEAVE_WINDOW( WinEDA_DrawPanel::OnMouseLeaving )
    EVT_MOUSE_EVENTS( WinEDA_DrawPanel::OnMouseEvent )
    EVT_CHAR( WinEDA_DrawPanel::OnKeyEvent )
    EVT_CHAR_HOOK( WinEDA_DrawPanel::OnKeyEvent )
    EVT_PAINT( WinEDA_DrawPanel::OnPaint )
    EVT_SIZE( WinEDA_DrawPanel::OnSize )
    EVT_ERASE_BACKGROUND( WinEDA_DrawPanel::OnEraseBackground )
    EVT_SCROLLWIN( WinEDA_DrawPanel::OnScroll )
    EVT_ACTIVATE( WinEDA_DrawPanel::OnActivate )
    
    EVT_MENU_RANGE( ID_POPUP_ZOOM_START_RANGE, ID_POPUP_ZOOM_END_RANGE,
                    WinEDA_DrawPanel::Process_Popup_Zoom )
END_EVENT_TABLE()

/***********************************************************/
/* Fonctions de base de WinEDA_DrawPanel: l'ecran de trace */
/***********************************************************/

WinEDA_DrawPanel::WinEDA_DrawPanel( WinEDA_DrawFrame* parent, int id,
                                    const wxPoint& pos, const wxSize& size ) :
    EDA_DRAW_PANEL( parent, id, pos, size,
                    wxBORDER | wxNO_FULL_REPAINT_ON_RESIZE )
{
    m_Parent          = parent;
    m_Ident           = m_Parent->m_Ident;
    m_Scroll_unit     = 1;
    m_ScrollButt_unit = 40;
    SetBackgroundColour( wxColour( ColorRefs[g_DrawBgColor].m_Red,
                                   ColorRefs[g_DrawBgColor].m_Green,
                                   ColorRefs[g_DrawBgColor].m_Blue ) );
    EnableScrolling( TRUE, TRUE );
    m_ClipBox.SetSize( size );
    m_ClipBox.SetX( 0 );
    m_ClipBox.SetY( 0 );
    m_CanStartBlock     = -1; // Command block can start if >= 0
    m_AbortEnable       = m_AbortRequest = FALSE;
    m_AutoPAN_Enable    = TRUE;
    m_IgnoreMouseEvents = 0;

    ManageCurseur = NULL;
    ForceCloseManageCurseur = NULL;

    if( m_Parent->m_Parent->m_EDA_Config )
        m_AutoPAN_Enable = m_Parent->m_Parent->m_EDA_Config->Read( wxT( "AutoPAN" ), TRUE );
    m_AutoPAN_Request    = FALSE;
    m_Block_Enable       = FALSE;
    m_PanelDefaultCursor = m_PanelCursor = wxCURSOR_ARROW;
    m_CursorLevel = 0;
}


/*********************************************************************************/
void WinEDA_DrawPanel::Trace_Curseur( wxDC* DC, int color )
/*********************************************************************************/

/*
 *  Draw the schematic cursor which is usually on grid
 */
{
    if( m_CursorLevel != 0 )
    {
        return;
    }

    if( DC == NULL )
        return;

    wxPoint Cursor = GetScreen()->m_Curseur;

    GRSetDrawMode( DC, GR_XOR );
    if( g_CursorShape == 1 )    /* Trace d'un reticule */
    {
        int dx = m_ClipBox.GetWidth()*  GetZoom();

        int dy = m_ClipBox.GetHeight()* GetZoom();

        GRLine( &m_ClipBox, DC, Cursor.x - dx, Cursor.y,
                Cursor.x + dx, Cursor.y, 0, color );            // axe Y
        GRLine( &m_ClipBox, DC, Cursor.x, Cursor.y - dx,
                Cursor.x, Cursor.y + dy, 0, color );            // axe X
    }
    else
    {
        int len = CURSOR_SIZE* GetZoom();

        GRLine( &m_ClipBox, DC, Cursor.x - len, Cursor.y,
                Cursor.x + len, Cursor.y, 0, color );
        GRLine( &m_ClipBox, DC, Cursor.x, Cursor.y - len,
                Cursor.x, Cursor.y + len, 0, color );
    }
}


/*******************************************************************/
void WinEDA_DrawPanel::CursorOff( wxDC* DC )
/*******************************************************************/

/*
 *  Remove the grid cursor from the display in preparation for other drawing operations
 */
{
    Trace_Curseur( DC );
    --m_CursorLevel;
}


/*******************************************************************/
void WinEDA_DrawPanel::CursorOn( wxDC* DC )
/*******************************************************************/

/*
 *  Display the grid cursor
 */
{
    ++m_CursorLevel;
    Trace_Curseur( DC );

    if( m_CursorLevel > 0 )  // Shouldn't happen, but just in case ..
        m_CursorLevel = 0;
}


/***********************************/
int WinEDA_DrawPanel::GetZoom()
/***********************************/
{
    return GetScreen()->GetZoom();
}


/***************************************/
void WinEDA_DrawPanel::SetZoom( int zoom )
/***************************************/
{
    GetScreen()->SetZoom( zoom );
}


/************************************/
wxSize WinEDA_DrawPanel::GetGrid()
/************************************/
{
    return GetScreen()->GetGrid();
}


/******************************************************/
void WinEDA_DrawPanel::PrepareGraphicContext( wxDC* DC )
/******************************************************/
{
    GRResetPenAndBrush( DC );
    DC->SetBackgroundMode( wxTRANSPARENT );
#ifdef WX_ZOOM
    int    zoom    = GetZoom();
    double f_scale = 1.0 / (double) zoom;

    DC->SetUserScale( f_scale, f_scale );
    PrepareDC( *DC );
#endif
    SetBoundaryBox();
}


/*********************************************************************/
wxPoint WinEDA_DrawPanel::CalcAbsolutePosition( const wxPoint& rel_pos )
/*********************************************************************/

/* retourne la position absolue en pixels de la position rel_pos,
 *  donn<EFBFBD>e en position relative scroll<EFBFBD>e (en pixel)
 */
{
    wxPoint pos;

#ifdef WX_ZOOM
    CalcUnscrolledPosition( rel_pos.x, rel_pos.y, &pos.x, &pos.y );
#else
    int ii, jj;
    
    GetViewStart( &pos.x, &pos.y );
    GetScrollPixelsPerUnit( &ii, &jj );
    
    pos.x *= ii; 
    pos.y *= jj;
    
    pos.x += rel_pos.x;
    pos.y += rel_pos.y;
#endif
    return pos;
}


/**********************************************************************/
wxPoint WinEDA_DrawPanel::CursorRealPosition( const wxPoint& ScreenPos )
/**********************************************************************/

/* Retourne la position en unites utilisateur du pointeur souris
 *  ScreenPos = position pointeur en coord absolue ecran
 */
{
    wxPoint curpos;

    curpos = GetScreen()->CursorRealPosition( ScreenPos );

    return curpos;
}


/********************************************************/
bool WinEDA_DrawPanel::IsPointOnDisplay( wxPoint ref_pos )
/********************************************************/

/* retourne TRUE si le point de coord physique ref_pos
 *  est visible sur l'ecran, c'est a dire:
 *  si ref_pos est sur la partie du schema ou pcb affichee a l'ecran
 */
{
    wxPoint  pos;
    EDA_Rect display_rect;

    SetBoundaryBox();
    display_rect = m_ClipBox;

    // Reduction legere des dimension de l'ecran utile pour eviter cadrage
    // en limite d'ecran
    #define PIXEL_MARGIN 8
    display_rect.Inflate( -PIXEL_MARGIN, -PIXEL_MARGIN );

    // Conversion en coord physiques
    pos    = CalcAbsolutePosition( display_rect.GetPosition() );
    
    pos.x *= GetZoom();
    pos.y *= GetZoom();
    
    pos.x += GetScreen()->m_DrawOrg.x;
    pos.y += GetScreen()->m_DrawOrg.y;
    
    display_rect.SetX( pos.x ); 
    display_rect.SetY( pos.y );
    
    display_rect.SetWidth( display_rect.GetWidth() * GetZoom() );
    display_rect.SetHeight( display_rect.GetHeight() * GetZoom() );

    return display_rect.Inside( ref_pos );
}


/********************************************************/
wxPoint WinEDA_DrawPanel::CursorScreenPosition()
/********************************************************/

/* retourne la position sur l'ecran,en pixels, du curseur
 *  Orgine = coord absolue 0,0;
 */
{
    wxPoint curpos = GetScreen()->m_Curseur;

    curpos.x -= GetScreen()->m_DrawOrg.x;
    curpos.y -= GetScreen()->m_DrawOrg.y;

    curpos.x /= GetZoom();
    curpos.y /= GetZoom();

    return curpos;
}


/*********************************************************/
wxPoint WinEDA_DrawPanel::GetScreenCenterRealPosition()
/*********************************************************/
{
    wxSize  size;
    wxPoint realpos;

    size    = GetClientSize();
    
    size.x /= 2; 
    size.y /= 2;

    realpos    = CalcAbsolutePosition( wxPoint( size.x, size.y ) );
    
    realpos.x *= GetZoom();
    realpos.y *= GetZoom();
    
    realpos.x += GetScreen()->m_DrawOrg.x;
    realpos.y += GetScreen()->m_DrawOrg.y;

    return realpos;
}


/**********************************************/
void WinEDA_DrawPanel::MouseToCursorSchema()
/**********************************************/

/* Move the mouse cursor to the current schematic cursor
 */
{
    wxPoint Mouse = CursorScreenPosition();

    MouseTo( Mouse );
}


/****************************************************/
void WinEDA_DrawPanel::MouseTo( const wxPoint& Mouse )
/****************************************************/

/** Move the mouse cursor to the position "Mouse"
 * @param Mouse = new mouse cursor position
 */
{
    wxPoint mouse;

#ifdef WX_ZOOM
    CalcScrolledPosition( Mouse.x, Mouse.y, &mouse.x, &mouse.y );
#else
    mouse    = Mouse;
    mouse.x -= GetScreen()->m_StartVisu.x;
    mouse.y -= GetScreen()->m_StartVisu.y;
#endif
    GRMouseWarp( this, mouse );
}


/********************************************************/
void WinEDA_DrawPanel::OnActivate( wxActivateEvent& event )
/********************************************************/
{
    m_CanStartBlock = -1;   // Block Command can't start
    event.Skip();
}


/***********************************************************/
void WinEDA_DrawPanel::OnEraseBackground( wxEraseEvent& event )
/***********************************************************/
{
    event.Skip();
}


/*********************************************************/
void WinEDA_DrawPanel::OnScroll( wxScrollWinEvent& event )
/*********************************************************/
{
    int id = event.GetEventType();
    int dir, value = 0;
    int x, y;

    GetViewStart( &x, &y );
    dir = event.GetOrientation();   // wxHORIZONTAL or wxVERTICAL

    if( id == wxEVT_SCROLLWIN_LINEUP )
        value = -m_ScrollButt_unit;

    else if( id == wxEVT_SCROLLWIN_LINEDOWN )
        value = m_ScrollButt_unit;

    else if( id == wxEVT_SCROLLWIN_THUMBTRACK )
    {
        value = event.GetPosition();
        if( dir == wxHORIZONTAL )
            Scroll( value, -1 );
        else
            Scroll( -1, value );
        return;
    }
    else
    {
        event.Skip();
        return;
    }

    if( dir == wxHORIZONTAL )
    {
        Scroll( x + value, -1 );
    }
    else
    {
        Scroll( -1, y + value );
    }
    event.Skip();
}


/*************************************************/
void WinEDA_DrawPanel::OnSize( wxSizeEvent& event )
/*************************************************/
{
    SetBoundaryBox();
    event.Skip();
}


/******************************************/
void WinEDA_DrawPanel::SetBoundaryBox()
/******************************************/
{
    BASE_SCREEN* Screen = GetScreen();;

    wxPoint      org;
    int          ii, jj;

    Screen->m_SizeVisu = GetClientSize();
    GetViewStart( &org.x, &org.y );

    GetScrollPixelsPerUnit( &ii, &jj );
    org.x *= ii; org.y *= jj;
    Screen->m_StartVisu = org;

    m_ClipBox.SetOrigin( org );
    m_ClipBox.SetSize( GetClientSize() );

#ifdef WX_ZOOM
    m_ClipBox.m_Pos.x  *= GetZoom();
    m_ClipBox.m_Pos.y  *= GetZoom();
    m_ClipBox.m_Size.x *= GetZoom();
    m_ClipBox.m_Size.y *= GetZoom();
#else
    m_ClipBox.m_Pos.x -= GetScreen()->m_StartVisu.x;
    m_ClipBox.m_Pos.y -= GetScreen()->m_StartVisu.y;
#endif

    m_ScrollButt_unit = MIN( Screen->m_SizeVisu.x, Screen->m_SizeVisu.y ) / 4;
    if( m_ScrollButt_unit < 2 )
        m_ScrollButt_unit = 2;

    Screen->m_ScrollbarPos.x = GetScrollPos( wxHORIZONTAL );
    Screen->m_ScrollbarPos.y = GetScrollPos( wxVERTICAL );
}


/*********************************************/
void WinEDA_DrawPanel::EraseScreen( wxDC* DC )
/*********************************************/
{
    GRSetDrawMode( DC, GR_COPY );
    GRSFilledRect( &m_ClipBox, DC, m_ClipBox.GetX(), m_ClipBox.GetY(),
                   m_ClipBox.GetRight(), m_ClipBox.GetBottom(),
                   g_DrawBgColor, g_DrawBgColor );
}


/***************************************************/
void WinEDA_DrawPanel::OnPaint( wxPaintEvent& event )
/***************************************************/
{
    wxPaintDC paintDC( this );
    EDA_Rect  tmp;
    wxRect    PaintClipBox;
    wxPoint   org;

    PrepareGraphicContext( &paintDC );
    tmp = m_ClipBox;

    org = m_ClipBox.GetOrigin();

    wxRegionIterator upd( GetUpdateRegion() ); // get the update rect list

    while( upd )
    {
        PaintClipBox = upd.GetRect();
        upd++;

        PaintClipBox.x += org.x;
        PaintClipBox.y += org.y;

#ifdef WX_ZOOM
        m_ClipBox.m_Pos.x = PaintClipBox.x*         GetZoom();

        m_ClipBox.m_Pos.y = PaintClipBox.y*         GetZoom();

        m_ClipBox.m_Size.x = PaintClipBox.m_Size.x* GetZoom();

        m_ClipBox.m_Size.y = PaintClipBox.m_Size.y* GetZoom();

        PaintClipBox = m_ClipBox;
#else
        m_ClipBox.SetX( PaintClipBox.GetX() );
        m_ClipBox.SetY( PaintClipBox.GetY() );
        m_ClipBox.SetWidth( PaintClipBox.GetWidth() );
        m_ClipBox.SetHeight( PaintClipBox.GetHeight() );
#endif

        wxDCClipper* dcclip = new wxDCClipper( paintDC, PaintClipBox );
        ReDraw( &paintDC, TRUE );
        delete dcclip;
    }

    m_ClipBox = tmp;
    event.Skip();
}


/****************************************************/
void WinEDA_DrawPanel::ReDraw( wxDC* DC, bool erasebg )
/****************************************************/
{
    BASE_SCREEN* Screen = GetScreen();

    if( Screen == NULL )
        return;

    if( (g_DrawBgColor != WHITE) && (g_DrawBgColor != BLACK) )
        g_DrawBgColor = BLACK;

    if( g_DrawBgColor == WHITE )
    {
        g_XorMode    = GR_NXOR;
        g_GhostColor = BLACK;
    }
    else
    {
        g_XorMode    = GR_XOR;
        g_GhostColor = WHITE;
    }

#ifdef WX_ZOOM
    int    zoom    = GetZoom();
    double f_scale = 1.0 / (double) zoom;
    DC->SetUserScale( f_scale, f_scale );
#endif

    if( erasebg )
        PrepareGraphicContext( DC );

    DC->SetFont( *g_StdFont );

    SetBackgroundColour( wxColour( ColorRefs[g_DrawBgColor].m_Red,
                                   ColorRefs[g_DrawBgColor].m_Green,
                                   ColorRefs[g_DrawBgColor].m_Blue ) );

    GRResetPenAndBrush( DC );

    DC->SetBackground( *wxBLACK_BRUSH );
    DC->SetBackgroundMode( wxTRANSPARENT );
    m_Parent->RedrawActiveWindow( DC, erasebg );
}


/***********************************************/
void WinEDA_DrawPanel::DrawBackGround( wxDC* DC )
/***********************************************/

/* Trace les axes X et Y et la grille
 *  La grille n'est affichee que si elle peut etre facilement visible
 *  La grille passe toujours par le centre de l'ecran
 */
{
    int          Color  = BLUE;
    BASE_SCREEN* screen = GetScreen();
    int          ii, jj, xg, yg, color;
    wxSize       pas_grille_affichee;
    bool         drawgrid = FALSE;
    int          zoom = GetZoom();
    wxSize       size;
    wxPoint      org;
    double       pasx, pasy;

    color = g_GridColor;
    
    GRSetDrawMode( DC, GR_COPY );

    /* le pas d'affichage doit etre assez grand pour avoir une grille visible */
    drawgrid = m_Parent->m_Draw_Grid;
    
    pas_grille_affichee = screen->GetGrid();

    ii = pas_grille_affichee.x / zoom;
    if( ii  < 5 )
    {
        pas_grille_affichee.x *= 2; 
        ii *= 2;
    }
    if( ii < 5 )
        drawgrid = FALSE;           // grille trop petite
    
    ii = pas_grille_affichee.y / zoom;
    if( ii  < 5 )
    {
        pas_grille_affichee.y *= 2; 
        ii *= 2;
    }
    if( ii < 5 )
        drawgrid = FALSE;           // grille trop petite

    GetViewStart( &org.x, &org.y );
    GetScrollPixelsPerUnit( &ii, &jj );
    
    org.x *= ii; 
    org.y *= jj;
    
    screen->m_StartVisu = org;

    org.x *= zoom; 
    org.y *= zoom;
    
    org.x += screen->m_DrawOrg.x; 
    org.y += screen->m_DrawOrg.y;

    size    = GetClientSize();
    
    size.x *= zoom; 
    size.y *= zoom;
    
    pasx    = screen->m_UserGrid.x * m_Parent->m_InternalUnits;
    pasy    = screen->m_UserGrid.y * m_Parent->m_InternalUnits;
    
    if( screen->m_UserGridUnit != INCHES )
    {
        pasx /= 25.4; 
        pasy /= 25.4;
    }

    if( drawgrid )
    {
        m_Parent->PutOnGrid( &org );

        GRSetColorPen( DC, color );
        for( ii = 0; ; ii++ )
        {
            xg = screen->m_UserGridIsON ? (int) ( (ii * pasx) + 0.5 )
                 : ii * pas_grille_affichee.x;
                 
            int xpos = org.x + xg;
            
            for( jj = 0; ; jj++ )
            {
                yg = screen->m_UserGridIsON ? (int) ( (jj * pasy) + 0.5 )
                     : jj * pas_grille_affichee.y;
                GRPutPixel( &m_ClipBox, DC, xpos, org.y + yg, color );
                if( yg > size.y )
                    break;
            }

            if( xg > size.x )
                break;
        }
    }

    /* Draw axis */
    if(  m_Parent->m_Draw_Axis )
    {
        /* Draw the Y axis */
        GRDashedLine( &m_ClipBox, DC, 0, -screen->ReturnPageSize().y,
                      0, screen->ReturnPageSize().y, 0, Color );

        /* Draw the X axis */
        GRDashedLine( &m_ClipBox, DC, -screen->ReturnPageSize().x, 0,
                      screen->ReturnPageSize().x, 0, 0, Color );
    }

    /* Draw auxiliary axis */
    if( m_Parent->m_Draw_Auxiliary_Axis )
    {
        m_Draw_Auxiliary_Axis( DC, FALSE );
    }
}


/********************************************************************/
void WinEDA_DrawPanel::m_Draw_Auxiliary_Axis( wxDC* DC, int drawmode )
/********************************************************************/
{
    if( m_Parent->m_Auxiliary_Axis_Position.x == 0
     && m_Parent->m_Auxiliary_Axis_Position.y == 0 )
        return;

    int          Color  = DARKRED;
    BASE_SCREEN* screen = GetScreen();

    GRSetDrawMode( DC, drawmode );

    /* Draw the Y axis */
    GRDashedLine( &m_ClipBox, DC,
                  m_Parent->m_Auxiliary_Axis_Position.x, -screen->ReturnPageSize().y,
                  m_Parent->m_Auxiliary_Axis_Position.x, screen->ReturnPageSize().y,
                  0, Color );

    /* Draw the X axis */
    GRDashedLine( &m_ClipBox, DC,
                  -screen->ReturnPageSize().x, m_Parent->m_Auxiliary_Axis_Position.y,
                  screen->ReturnPageSize().x, m_Parent->m_Auxiliary_Axis_Position.y,
                  0, Color );
}


/*******************************************************/
bool WinEDA_DrawPanel::OnRightClick( wxMouseEvent& event )
/*******************************************************/

/** Build and display a Popup menu on a right mouse button click
 * @return true if a popup menu is shown, or false
 */
{
    wxPoint pos;
    wxMenu  MasterMenu;

    pos.x = event.GetX(); 
    pos.y = event.GetY();
    
    if ( ! m_Parent->OnRightClick( pos, &MasterMenu ) )
		return false;
    
    AddMenuZoom( &MasterMenu );
    
    m_IgnoreMouseEvents = TRUE;
    PopupMenu( &MasterMenu, pos );
    MouseToCursorSchema();
    m_IgnoreMouseEvents = FALSE;
	
	return true;
}


/******************************************************/
void WinEDA_DrawPanel::OnMouseLeaving( wxMouseEvent& event )
/*******************************************************/

// Called when the canvas receives a mouse event leaving frame. //
{
    if( ManageCurseur == NULL )  // Pas de commande encours
        m_AutoPAN_Request = FALSE;

    if( !m_AutoPAN_Enable || !m_AutoPAN_Request || m_IgnoreMouseEvents )
        return;

    // Auto pan if mouse is leave working aera:
    wxSize size = GetClientSize();
    if( ( size.x < event.GetX() )
       || ( size.y < event.GetY() )
       || ( event.GetX() <= 0) || ( event.GetY() <= 0 ) )
        m_Parent->OnZoom( ID_POPUP_ZOOM_CENTER );
}


/******************************************************/
void WinEDA_DrawPanel::OnMouseEvent( wxMouseEvent& event )
/*******************************************************/

// Called when the canvas receives a mouse event. //
{
    int                      localrealbutt = 0, localbutt = 0, localkey = 0;
    BASE_SCREEN*             screen = GetScreen();
    static WinEDA_DrawPanel* LastPanel;
	static bool IgnoreNextLeftButtonRelease = false;
	
    if( event.Leaving() || event.Entering() )
    {
        m_CanStartBlock = -1;
    }

    if( ManageCurseur == NULL )  // Pas de commande en cours
        m_AutoPAN_Request = FALSE;

    if( m_Parent->m_FrameIsActive )
        SetFocus();
    else
        return;

    // Mouse Wheel is a zoom command:
    if( event.m_wheelRotation )
    {
        // This is a zoom in ou out command
        if( event.GetWheelRotation() > 0 )
        {
            if( event.ShiftDown() )
                localkey = EDA_PANNING_UP_KEY;
            else if( event.ControlDown() )
                localkey = EDA_PANNING_LEFT_KEY;
            else
                localkey = EDA_ZOOM_IN_FROM_MOUSE;
        }
        else
        {
            if( event.ShiftDown() )
                localkey = EDA_PANNING_DOWN_KEY;
            else if( event.ControlDown() )
                localkey = EDA_PANNING_RIGHT_KEY;
            else
                localkey = EDA_ZOOM_OUT_FROM_MOUSE;
        }
    }

    if( !event.IsButton() && !event.Moving()
        && !event.Dragging() && !localkey )
    {
        return;
    }

    if( event.RightDown() )
    {
        OnRightClick( event ); 
        return;
    }

    if( m_IgnoreMouseEvents )
        return;

    if( event.LeftIsDown() )
        localrealbutt |= GR_M_LEFT_DOWN;
    
    if( event.MiddleIsDown() )
        localrealbutt |= GR_M_MIDDLE_DOWN;

    if( event.LeftDown() )
        localbutt = GR_M_LEFT_DOWN;

    if( event.ButtonDClick( 1 ) )
        localbutt = GR_M_LEFT_DOWN | GR_M_DCLICK;
    
    if( event.MiddleDown() )
        localbutt = GR_M_MIDDLE_DOWN;
    
    if( event.ButtonDClick( 2 ) )
    {
    }
    ;                               // Unused

    localrealbutt |= localbutt;     /* compensation defaut wxGTK */

    /* Compute absolute m_MousePosition in pixel units: */
    screen->m_MousePositionInPixels = CalcAbsolutePosition( wxPoint( event.GetX(), event.GetY() ) );
    
    /* Compute absolute m_MousePosition in user units: */
    screen->m_MousePosition = CursorRealPosition( screen->m_MousePositionInPixels );

    wxClientDC DC( this );
    int        kbstat = 0;

    DC.SetBackground( *wxBLACK_BRUSH );
    PrepareGraphicContext( &DC );

    g_KeyPressed = localkey;

    if( event.ShiftDown() )
        kbstat |= GR_KB_SHIFT;
    if( event.ControlDown() )
        kbstat |= GR_KB_CTRL;
    if( event.AltDown() )
        kbstat |= GR_KB_ALT;

    g_MouseOldButtons = localrealbutt;

    // Appel des fonctions li<6C>es au Double Click ou au Click
    if( localbutt == (int) (GR_M_LEFT_DOWN | GR_M_DCLICK) )
	{
        m_Parent->OnLeftDClick( &DC, screen->m_MousePositionInPixels );
		IgnoreNextLeftButtonRelease = true;
	}

    else if( event.LeftUp() )
    {
        if( screen->BlockLocate.m_State==STATE_NO_BLOCK  &&  !IgnoreNextLeftButtonRelease )
			m_Parent->OnLeftClick( &DC, screen->m_MousePositionInPixels );
        
        IgnoreNextLeftButtonRelease = false;
    }

    if( event.ButtonUp( 2 ) && (screen->BlockLocate.m_State == STATE_NO_BLOCK) )
    {   
        // The middle button has been relached, with no block command:
        // We use it for a zoom center command
        g_KeyPressed = localkey = EDA_ZOOM_CENTER_FROM_MOUSE;
    }



    /* Appel de la fonction generale de gestion des mouvements souris
     *  et commandes clavier */
    m_Parent->GeneralControle( &DC, screen->m_MousePositionInPixels );


    /*******************************/
    /* Control of block commands : */
    /*******************************/

    // Command block can't start if mouse is dragging a new panel
    if( LastPanel != this )
        m_CanStartBlock = -1;

    // A new command block can start after a release buttons
    // Avoid a false start block when a dialog box is demiss,
    // or when changing panels in hierachy navigation
    if( !event.LeftIsDown() && !event.MiddleIsDown() )
    {
        m_CanStartBlock = 0;
    }

    if( m_Block_Enable && !(localbutt & GR_M_DCLICK) )
    {
        if( (screen->BlockLocate.m_Command == BLOCK_IDLE)
           || (screen->BlockLocate.m_State == STATE_NO_BLOCK) )
        {
            m_CursorStartPos = screen->m_Curseur;
            screen->BlockLocate.SetOrigin( m_CursorStartPos );
        }
        if( event.LeftDown() || event.MiddleDown() )
        {
            m_CursorStartPos = screen->m_Curseur;
            if( screen->BlockLocate.m_State == STATE_BLOCK_MOVE )
            {
                m_AutoPAN_Request = FALSE;
                m_Parent->HandleBlockPlace( &DC );
				IgnoreNextLeftButtonRelease = true;
            }
        }
        else if( (m_CanStartBlock >= 0 )
                && ( event.LeftIsDown() || event.MiddleIsDown() )
                && ManageCurseur == NULL
                && ForceCloseManageCurseur == NULL )
        {
            if( screen->BlockLocate.m_State == STATE_NO_BLOCK )
            {
                int cmd_type = kbstat;
                
                if( event.MiddleIsDown() )
                    cmd_type |= MOUSE_MIDDLE;
                
                if( !m_Parent->HandleBlockBegin( &DC, cmd_type, m_CursorStartPos ) )
                {   
                    // error
                    m_Parent->DisplayToolMsg( 
                     wxT( "WinEDA_DrawPanel::OnMouseEvent() Block Error" ) );
                }
                else
                {
                    m_AutoPAN_Request = TRUE;
                    SetCursor( m_PanelCursor = wxCURSOR_SIZING );
                }
            }
        }

        if( event.ButtonUp( 1 ) || event.ButtonUp( 2 ) )
        { 
            /* Relachement du bouton: fin de delimitation de block.
             * La commande peut etre terminee (DELETE) ou continuer par le placement
             * du block ainsi delimite (MOVE, COPY).
             * Cependant bloc est annule si sa taille est trop petite
             */
            bool BlockIsSmall =
                ( ABS( screen->BlockLocate.GetWidth() / GetZoom() ) < 3)
                && ( ABS( screen->BlockLocate.GetHeight() / GetZoom() ) < 3);

            if( (screen->BlockLocate.m_State != STATE_NO_BLOCK) && BlockIsSmall )
            {
                if( ForceCloseManageCurseur )
                {
                    ForceCloseManageCurseur( this, &DC );
                    m_AutoPAN_Request = FALSE;
                }
                SetCursor( m_PanelCursor = m_PanelDefaultCursor );
            }
            else if( screen->BlockLocate.m_State == STATE_BLOCK_END )
            {
                m_AutoPAN_Request = FALSE;
                m_Parent->HandleBlockEnd( &DC );
                SetCursor( m_PanelCursor = m_PanelDefaultCursor );
                if( screen->BlockLocate.m_State == STATE_BLOCK_MOVE )
                {
                    m_AutoPAN_Request = TRUE;
                    SetCursor( m_PanelCursor = wxCURSOR_HAND );
                }
            }
        }
    }

    // Arret de block sur un double click ( qui peut provoquer un move block
    // si on d<>place la souris dans ce double click
    if( localbutt == (int) (GR_M_LEFT_DOWN | GR_M_DCLICK) )
    {
        if( screen->BlockLocate.m_Command != BLOCK_IDLE )
        {
            if( ForceCloseManageCurseur )
            {
                ForceCloseManageCurseur( this, &DC );
                m_AutoPAN_Request = FALSE;
            }
        }
    }


#if 0
    wxString msg_debug;
    msg_debug.Printf( " block state %d, cmd %d",
                      screen->BlockLocate.m_State, screen->BlockLocate.m_Command );
    m_Parent->PrintMsg( msg_debug );
#endif

    LastPanel = this;
    m_Parent->SetToolbars();
}


/****************************************************/
void WinEDA_DrawPanel::OnKeyEvent( wxKeyEvent& event )
/****************************************************/
{
    long key, localkey;
    bool escape = FALSE;

    key = localkey = event.GetKeyCode();

    switch( localkey )
    {
    case WXK_CONTROL:
    case WXK_CAPITAL:
    case WXK_SHIFT:
    case WXK_NUMLOCK:
    case WXK_LBUTTON:
    case WXK_RBUTTON:
    case WXK_ALT:
        return;

    case WXK_ESCAPE:
        escape = m_AbortRequest = TRUE;
        break;
    }

    if( event.ControlDown() )
        localkey |= GR_KB_CTRL;
    if( event.AltDown() )
        localkey |= GR_KB_ALT;
    if( event.ShiftDown() && (key > 256) )
        localkey |= GR_KB_SHIFT;

    wxClientDC   DC( this );
    BASE_SCREEN* Screen = GetScreen();

    PrepareGraphicContext( &DC );

    g_KeyPressed = localkey;

    if( escape )
    {
        if( ManageCurseur && ForceCloseManageCurseur )
        {
            SetCursor( m_PanelCursor = m_PanelDefaultCursor );
            ForceCloseManageCurseur( this, &DC );
            SetCursor( m_PanelCursor = m_PanelDefaultCursor );
        }
        else
        {
            m_PanelCursor = m_PanelDefaultCursor = wxCURSOR_ARROW;
            m_Parent->SetToolID( 0, m_PanelCursor, wxEmptyString );
        }
    }

    m_Parent->GeneralControle( &DC, Screen->m_MousePositionInPixels );

#if 0
    event.Skip();   // Allow menu shortcut processing
#endif
}