void VIA::Draw( EDA_DRAW_PANEL* panel, wxDC* aDC, GR_DRAWMODE aDrawMode,
                   const wxPoint& aOffset )
{
    int radius;
    LAYER_NUM curr_layer = ( (PCB_SCREEN*) panel->GetScreen() )->m_Active_Layer;

    int fillvia = 0;
    PCB_BASE_FRAME* frame  = (PCB_BASE_FRAME*) panel->GetParent();
    PCB_SCREEN*     screen = frame->GetScreen();

    if( frame->m_DisplayViaFill == FILLED )
        fillvia = 1;

    GRSetDrawMode( aDC, aDrawMode );

    BOARD * brd =  GetBoard( );
    EDA_COLOR_T color = brd->GetVisibleElementColor(VIAS_VISIBLE + GetViaType());

    if( brd->IsElementVisible( PCB_VISIBLE(VIAS_VISIBLE + GetViaType()) ) == false
        && ( color & HIGHLIGHT_FLAG ) != HIGHLIGHT_FLAG )
        return;

    if( DisplayOpt.ContrastModeDisplay )
    {
        if( !IsOnLayer( curr_layer ) )
            ColorTurnToDarkDarkGray( &color );
    }

    if( aDrawMode & GR_HIGHLIGHT )
        ColorChangeHighlightFlag( &color, !(aDrawMode & GR_AND) );

    ColorApplyHighlightFlag( &color );

    SetAlpha( &color, 150 );


    radius = m_Width >> 1;
    // for small via size on screen (radius < 4 pixels) draw a simplified shape

    int radius_in_pixels = aDC->LogicalToDeviceXRel( radius );

    bool fast_draw = false;

    // Vias are drawn as a filled circle or a double circle. The hole will be drawn later
    int drill_radius = GetDrillValue() / 2;

    int inner_radius = radius - aDC->DeviceToLogicalXRel( 2 );

    if( radius_in_pixels < MIN_VIA_DRAW_SIZE )
    {
        fast_draw = true;
        fillvia = false;
    }

    if( fillvia )
    {
        GRFilledCircle( panel->GetClipBox(), aDC, m_Start + aOffset, radius, color );
    }
    else
    {
        GRCircle( panel->GetClipBox(), aDC, m_Start + aOffset, radius, 0, color );

        if ( fast_draw )
            return;

        GRCircle( panel->GetClipBox(), aDC, m_Start + aOffset, inner_radius, 0, color );
    }

    // Draw the via hole if the display option allows it
    if( DisplayOpt.m_DisplayViaMode != VIA_HOLE_NOT_SHOW )
    {
        // Display all drill holes requested or Display non default holes requested
        if( (DisplayOpt.m_DisplayViaMode == ALL_VIA_HOLE_SHOW)
          || ( (drill_radius > 0 ) && !IsDrillDefault() ) )
        {
            if( fillvia )
            {
                bool blackpenstate = false;

                if( screen->m_IsPrinting )
                {
                    blackpenstate = GetGRForceBlackPenState();
                    GRForceBlackPen( false );
                    color = WHITE;
                }
                else
                {
                    color = BLACK;     // or DARKGRAY;
                }

                if( (aDrawMode & GR_XOR) == 0)
                    GRSetDrawMode( aDC, GR_COPY );

                if( aDC->LogicalToDeviceXRel( drill_radius ) > MIN_DRAW_WIDTH )  // Draw hole if large enough.
                    GRFilledCircle( panel->GetClipBox(), aDC, m_Start.x + aOffset.x,
                                    m_Start.y + aOffset.y, drill_radius, 0, color, color );

                if( screen->m_IsPrinting )
                    GRForceBlackPen( blackpenstate );
            }
            else
            {
                if( drill_radius < inner_radius )         // We can show the via hole
                    GRCircle( panel->GetClipBox(), aDC, m_Start + aOffset, drill_radius, 0, color );
            }
        }
    }

    if( ShowClearance( this ) )
    {
        GRCircle( panel->GetClipBox(), aDC, m_Start + aOffset, radius + GetClearance(), 0, color );
    }

    // for Micro Vias, draw a partial cross : X on component layer, or + on copper layer
    // (so we can see 2 superimposed microvias ):
    if( GetViaType() == VIA_MICROVIA )
    {
        int ax, ay, bx, by;

        if( IsOnLayer( LAYER_N_BACK ) )
        {
            ax = radius; ay = 0;
            bx = drill_radius; by = 0;
        }
        else
        {
            ax = ay = (radius * 707) / 1000;
            bx = by = (drill_radius * 707) / 1000;
        }

        /* lines | or \ */
        GRLine( panel->GetClipBox(), aDC, m_Start.x + aOffset.x - ax,
                m_Start.y + aOffset.y - ay,
                m_Start.x + aOffset.x - bx,
                m_Start.y + aOffset.y - by, 0, color );
        GRLine( panel->GetClipBox(), aDC, m_Start.x + aOffset.x + bx,
                m_Start.y + aOffset.y + by,
                m_Start.x + aOffset.x + ax,
                m_Start.y + aOffset.y + ay, 0, color );

        // lines - or /
        GRLine( panel->GetClipBox(), aDC, m_Start.x + aOffset.x + ay,
                m_Start.y + aOffset.y - ax,
                m_Start.x + aOffset.x + by,
                m_Start.y + aOffset.y - bx, 0, color );
        GRLine( panel->GetClipBox(), aDC, m_Start.x + aOffset.x - by,
                m_Start.y + aOffset.y + bx,
                m_Start.x + aOffset.x - ay,
                m_Start.y + aOffset.y + ax, 0, color );
    }

    // for Buried Vias, draw a partial line : orient depending on layer pair
    // (so we can see superimposed buried vias ):
    if( GetViaType() == VIA_BLIND_BURIED )
    {
        int ax = 0, ay = radius, bx = 0, by = drill_radius;
        LAYER_NUM layer_top, layer_bottom;

        ( (VIA*) this )->LayerPair( &layer_top, &layer_bottom );

        // lines for the top layer
        RotatePoint( &ax, &ay, layer_top * 3600.0 / brd->GetCopperLayerCount( ) );
        RotatePoint( &bx, &by, layer_top * 3600.0 / brd->GetCopperLayerCount( ) );
        GRLine( panel->GetClipBox(), aDC, m_Start.x + aOffset.x - ax,
                m_Start.y + aOffset.y - ay,
                m_Start.x + aOffset.x - bx,
                m_Start.y + aOffset.y - by, 0, color );

        // lines for the bottom layer
        ax = 0; ay = radius; bx = 0; by = drill_radius;
        RotatePoint( &ax, &ay, layer_bottom * 3600.0 / brd->GetCopperLayerCount( ) );
        RotatePoint( &bx, &by, layer_bottom * 3600.0 / brd->GetCopperLayerCount( ) );
        GRLine( panel->GetClipBox(), aDC, m_Start.x + aOffset.x - ax,
                m_Start.y + aOffset.y - ay,
                m_Start.x + aOffset.x - bx,
                m_Start.y + aOffset.y - by, 0, color );
    }

    // Display the short netname:
    if( GetNetCode() == NETINFO_LIST::UNCONNECTED )
        return;

    if( DisplayOpt.DisplayNetNamesMode == 0 || DisplayOpt.DisplayNetNamesMode == 1 )
        return;

    NETINFO_ITEM* net = GetNet();

    if( net == NULL )
        return;

    int len = net->GetShortNetname().Len();

    if( len > 0 )
    {
        // calculate a good size for the text
        int tsize = m_Width / len;

        if( aDC->LogicalToDeviceXRel( tsize ) >= MIN_TEXT_SIZE )
        {
            tsize = (tsize * 7) / 10;        // small reduction to give a better look, inside via
            if( (aDrawMode & GR_XOR) == 0 )
                GRSetDrawMode( aDC, GR_COPY );

            EDA_RECT* clipbox = panel? panel->GetClipBox() : NULL;
            DrawGraphicHaloText( clipbox, aDC, m_Start,
                                 color, WHITE, BLACK, net->GetShortNetname(), 0,
                                 wxSize( tsize, tsize ),
                                 GR_TEXT_HJUSTIFY_CENTER, GR_TEXT_VJUSTIFY_CENTER,
                                 tsize / 7, false, false );
        }
    }
}
Esempio n. 2
0
void D_PAD::DrawShape( EDA_RECT* aClipBox, wxDC* aDC, PAD_DRAWINFO& aDrawInfo )
{
    wxPoint coord[4];
    double  angle = m_Orient;
    int     seg_width;

    GRSetDrawMode( aDC, aDrawInfo.m_DrawMode );

    // calculate pad shape position :
    wxPoint shape_pos = ShapePos() - aDrawInfo.m_Offset;

    wxSize  halfsize = m_Size;
    halfsize.x >>= 1;
    halfsize.y >>= 1;

    switch( GetShape() )
    {
    case PAD_CIRCLE:
        if( aDrawInfo.m_ShowPadFilled )
            GRFilledCircle( aClipBox, aDC, shape_pos.x, shape_pos.y,
                            halfsize.x + aDrawInfo.m_Mask_margin.x, 0,
                            aDrawInfo.m_Color, aDrawInfo.m_Color );
        else
            GRCircle( aClipBox, aDC, shape_pos.x, shape_pos.y,
                      halfsize.x + aDrawInfo.m_Mask_margin.x,
                      m_PadSketchModePenSize, aDrawInfo.m_Color );

        if( aDrawInfo.m_PadClearance )
        {
            GRCircle( aClipBox,
                      aDC, shape_pos.x, shape_pos.y,
                      halfsize.x + aDrawInfo.m_PadClearance,
                      0, aDrawInfo.m_Color );
        }

        break;

    case PAD_OVAL:
    {
        wxPoint segStart, segEnd;
        seg_width = BuildSegmentFromOvalShape(segStart, segEnd, angle,
                                              aDrawInfo.m_Mask_margin);
        segStart += shape_pos;
        segEnd += shape_pos;

        if( aDrawInfo.m_ShowPadFilled )
        {
            GRFillCSegm( aClipBox, aDC, segStart.x, segStart.y, segEnd.x, segEnd.y,
                         seg_width, aDrawInfo.m_Color );
        }
        else
        {
            GRCSegm( aClipBox, aDC, segStart.x, segStart.y, segEnd.x, segEnd.y,
                     seg_width, m_PadSketchModePenSize, aDrawInfo.m_Color );
        }

        // Draw the clearance line
        if( aDrawInfo.m_PadClearance )
        {
            seg_width += 2 * aDrawInfo.m_PadClearance;
            GRCSegm( aClipBox, aDC, segStart.x, segStart.y, segEnd.x, segEnd.y,
                     seg_width, aDrawInfo.m_Color );
        }
    }
        break;

    case PAD_RECT:
    case PAD_TRAPEZOID:
        BuildPadPolygon( coord, aDrawInfo.m_Mask_margin, angle );

        for( int ii = 0; ii < 4; ii++ )
            coord[ii] += shape_pos;

        GRClosedPoly( aClipBox, aDC, 4, coord, aDrawInfo.m_ShowPadFilled,
                      aDrawInfo.m_ShowPadFilled ? 0 : m_PadSketchModePenSize,
                      aDrawInfo.m_Color, aDrawInfo.m_Color );

        if( aDrawInfo.m_PadClearance )
        {
            BuildPadPolygon( coord, wxSize( aDrawInfo.m_PadClearance,
                                            aDrawInfo.m_PadClearance ), angle );
            for( int ii = 0; ii < 4; ii++ )
                coord[ii] += shape_pos;

            GRClosedPoly( aClipBox, aDC, 4, coord, 0, aDrawInfo.m_Color, aDrawInfo.m_Color );
        }
        break;

    default:
        break;
    }

    // Draw the pad hole
    wxPoint holepos = m_Pos - aDrawInfo.m_Offset;
    int     hole    = m_Drill.x >> 1;

    bool drawhole = hole > 0;

    if( !aDrawInfo.m_ShowPadFilled && !aDrawInfo.m_ShowNotPlatedHole )
        drawhole = false;

    if( drawhole )
    {
        bool blackpenstate = false;

        if( aDrawInfo.m_IsPrinting )
        {
            blackpenstate = GetGRForceBlackPenState();
            GRForceBlackPen( false );
            aDrawInfo.m_HoleColor = WHITE;
        }

        if( aDrawInfo.m_DrawMode != GR_XOR )
            GRSetDrawMode( aDC, GR_COPY );
        else
            GRSetDrawMode( aDC, GR_XOR );

        EDA_COLOR_T hole_color = aDrawInfo.m_HoleColor;

        if( aDrawInfo. m_ShowNotPlatedHole )    // Draw a specific hole color
            hole_color = aDrawInfo.m_NPHoleColor;

        switch( GetDrillShape() )
        {
        case PAD_DRILL_CIRCLE:
            if( aDC->LogicalToDeviceXRel( hole ) > MIN_DRAW_WIDTH )
                GRFilledCircle( aClipBox, aDC, holepos.x, holepos.y, hole, 0,
                                hole_color, hole_color );
            break;

        case PAD_DRILL_OBLONG:
        {
            wxPoint drl_start, drl_end;
            GetOblongDrillGeometry( drl_start, drl_end, seg_width );
            GRFilledSegment( aClipBox, aDC, holepos + drl_start,
                             holepos + drl_end, seg_width, hole_color );
        }
            break;

        default:
            break;
        }

        if( aDrawInfo.m_IsPrinting )
            GRForceBlackPen( blackpenstate );
    }

    GRSetDrawMode( aDC, aDrawInfo.m_DrawMode );

    // Draw "No connect" ( / or \ or cross X ) if necessary
    if( GetNetCode() == 0 && aDrawInfo.m_ShowNCMark )
    {
        int dx0 = std::min( halfsize.x, halfsize.y );
        EDA_COLOR_T nc_color = BLUE;

        if( m_layerMask[F_Cu] )    /* Draw \ */
            GRLine( aClipBox, aDC, holepos.x - dx0, holepos.y - dx0,
                    holepos.x + dx0, holepos.y + dx0, 0, nc_color );

        if( m_layerMask[B_Cu] )     // Draw /
            GRLine( aClipBox, aDC, holepos.x + dx0, holepos.y - dx0,
                    holepos.x - dx0, holepos.y + dx0, 0, nc_color );
    }

    if( aDrawInfo.m_DrawMode != GR_XOR )
        GRSetDrawMode( aDC, GR_COPY );
    else
        GRSetDrawMode( aDC, GR_XOR );

    // Draw the pad number
    if( !aDrawInfo.m_Display_padnum && !aDrawInfo.m_Display_netname )
        return;

    wxPoint tpos0 = shape_pos;     // Position of the centre of text
    wxPoint tpos  = tpos0;
    wxSize  AreaSize;              // size of text area, normalized to AreaSize.y < AreaSize.x
    int     shortname_len = 0;

    if( aDrawInfo.m_Display_netname )
        shortname_len = GetShortNetname().Len();

    if( GetShape() == PAD_CIRCLE )
        angle = 0;

    AreaSize = m_Size;

    if( m_Size.y > m_Size.x )
    {
        angle += 900;
        AreaSize.x = m_Size.y;
        AreaSize.y = m_Size.x;
    }

    if( shortname_len > 0 )       // if there is a netname, provides room to display this netname
    {
        AreaSize.y /= 2;          // Text used only the upper area of the
                                  // pad. The lower area displays the net name
        tpos.y -= AreaSize.y / 2;
    }

    // Calculate the position of text, that is the middle point of the upper
    // area of the pad
    RotatePoint( &tpos, shape_pos, angle );

    // Draw text with an angle between -90 deg and + 90 deg
    double t_angle = angle;
    NORMALIZE_ANGLE_90( t_angle );

    /* Note: in next calculations, texte size is calculated for 3 or more
     * chars.  Of course, pads numbers and nets names can have less than 3
     * chars. but after some tries, i found this is gives the best look
     */
    #define MIN_CHAR_COUNT 3
    wxString buffer;

    int      tsize;
    EDA_RECT* clipBox = aDrawInfo.m_DrawPanel?
                        aDrawInfo.m_DrawPanel->GetClipBox() : NULL;

    if( aDrawInfo.m_Display_padnum )
    {
        StringPadName( buffer );
        int numpad_len = buffer.Len();
        numpad_len = std::max( numpad_len, MIN_CHAR_COUNT );

        tsize = std::min( AreaSize.y, AreaSize.x / numpad_len );

        if( aDC->LogicalToDeviceXRel( tsize ) >= MIN_TEXT_SIZE ) // Not drawable when size too small.
        {
            // tsize reserve room for marges and segments thickness
            tsize = ( tsize * 7 ) / 10;
            DrawGraphicHaloText( clipBox, aDC, tpos,
                                 aDrawInfo.m_Color, BLACK, WHITE,
                                 buffer, t_angle,
                                 wxSize( tsize , tsize ), GR_TEXT_HJUSTIFY_CENTER,
                                 GR_TEXT_VJUSTIFY_CENTER, tsize / 7, false, false );

        }
    }

    // display the short netname, if exists
    if( shortname_len == 0 )
        return;

    shortname_len = std::max( shortname_len, MIN_CHAR_COUNT );
    tsize = std::min( AreaSize.y, AreaSize.x / shortname_len );

    if( aDC->LogicalToDeviceXRel( tsize ) >= MIN_TEXT_SIZE )  // Not drawable in size too small.
    {
        tpos = tpos0;

        if( aDrawInfo.m_Display_padnum )
            tpos.y += AreaSize.y / 2;

        RotatePoint( &tpos, shape_pos, angle );

        // tsize reserve room for marges and segments thickness
        tsize = ( tsize * 7 ) / 10;
        DrawGraphicHaloText( clipBox, aDC, tpos,
                             aDrawInfo.m_Color, BLACK, WHITE,
                             GetShortNetname(), t_angle,
                             wxSize( tsize, tsize ), GR_TEXT_HJUSTIFY_CENTER,
                             GR_TEXT_VJUSTIFY_CENTER, tsize / 7, false, false );
    }
}
void TRACK::DrawShortNetname( EDA_DRAW_PANEL* panel,
        wxDC* aDC, GR_DRAWMODE aDrawMode, EDA_COLOR_T aBgColor )
{
    /* we must filter tracks, to avoid a lot of texts.
     *  - only tracks with a length > 10 * thickness are eligible
     * and, of course, if we are not printing the board
     */
    if( DisplayOpt.DisplayNetNamesMode == 0 || DisplayOpt.DisplayNetNamesMode == 1 )
        return;

    #define THRESHOLD 10

    int len = KiROUND( GetLineLength( m_Start, m_End ) );

    if( len < THRESHOLD * m_Width )
        return;

    // no room to display a text inside track
    if( aDC->LogicalToDeviceXRel( m_Width ) < MIN_TEXT_SIZE )
        return;

    if( GetNetCode() == NETINFO_LIST::UNCONNECTED )
        return;

    NETINFO_ITEM* net = GetNet();

    if( net == NULL )
        return;

    int textlen = net->GetShortNetname().Len();

    if( textlen > 0 )
    {
        // calculate a good size for the text
        int     tsize = std::min( m_Width, len / textlen );
        int     dx = m_End.x - m_Start.x ;
        int     dy = m_End.y - m_Start.y ;
        wxPoint tpos  = m_Start + m_End;
        tpos.x /= 2;
        tpos.y /= 2;

        // Calculate angle: if the track segment is vertical, angle = 90 degrees
        // If horizontal 0 degrees, otherwise compute it
        double angle;        // angle is in 0.1 degree

        if( dy == 0 )        // Horizontal segment
        {
            angle = 0;
        }
        else
        {
            if( dx == 0 )    // Vertical segment
            {
                angle = 900;
            }
            else
            {
                /* atan2 is *not* the solution here, since it can give upside
                   down text. We want to work only in the first and fourth quadrant */
                angle = RAD2DECIDEG( -atan( double( dy ) / double( dx ) ) );
            }
        }

        LAYER_NUM curr_layer = ( (PCB_SCREEN*) panel->GetScreen() )->m_Active_Layer;
        if( ( aDC->LogicalToDeviceXRel( tsize ) >= MIN_TEXT_SIZE )
         && ( !(!IsOnLayer( curr_layer )&& DisplayOpt.ContrastModeDisplay) ) )
        {
            if( (aDrawMode & GR_XOR) == 0 )
                GRSetDrawMode( aDC, GR_COPY );

            tsize = (tsize * 7) / 10;       // small reduction to give a better look
            EDA_RECT* clipbox = panel? panel->GetClipBox() : NULL;
            DrawGraphicHaloText( clipbox, aDC, tpos,
                                 aBgColor, BLACK, WHITE, net->GetShortNetname(), angle,
                                 wxSize( tsize, tsize ),
                                 GR_TEXT_HJUSTIFY_CENTER, GR_TEXT_VJUSTIFY_CENTER,
                                 tsize / 7,
                                 false, false );
        }
    }
}
void VIA::Draw( EDA_DRAW_PANEL* panel, wxDC* aDC, GR_DRAWMODE aDrawMode, const wxPoint& aOffset )
{
    wxCHECK_RET( panel != NULL, wxT( "VIA::Draw panel cannot be NULL." ) );

    int radius;
    PCB_LAYER_ID curr_layer = ( (PCB_SCREEN*) panel->GetScreen() )->m_Active_Layer;

    int fillvia = 0;
    PCB_BASE_FRAME* frame  = (PCB_BASE_FRAME*) panel->GetParent();
    PCB_SCREEN*     screen = frame->GetScreen();
    auto displ_opts = (PCB_DISPLAY_OPTIONS*)( frame->GetDisplayOptions() );

    if( displ_opts->m_DisplayViaFill == FILLED )
        fillvia = 1;

    GRSetDrawMode( aDC, aDrawMode );

    BOARD * brd =  GetBoard();
    COLOR4D color = frame->Settings().Colors().GetItemColor( LAYER_VIAS + GetViaType() );

    if( brd->IsElementVisible( LAYER_VIAS + GetViaType() ) == false
        && !( aDrawMode & GR_HIGHLIGHT ) )
       return;

    // Only draw the via if at least one of the layers it crosses is being displayed
    if( !( brd->GetVisibleLayers() & GetLayerSet() ).any() )
        return;

    if( displ_opts->m_ContrastModeDisplay )
    {
        if( !IsOnLayer( curr_layer ) )
            color = COLOR4D( DARKDARKGRAY );
    }

    if( ( aDrawMode & GR_HIGHLIGHT ) && !( aDrawMode & GR_AND ) )
        color.SetToLegacyHighlightColor();

    color.a = 0.588;


    radius = m_Width >> 1;
    // for small via size on screen (radius < 4 pixels) draw a simplified shape

    int radius_in_pixels = aDC->LogicalToDeviceXRel( radius );

    bool fast_draw = false;

    // Vias are drawn as a filled circle or a double circle. The hole will be drawn later
    int drill_radius = GetDrillValue() / 2;

    int inner_radius = radius - aDC->DeviceToLogicalXRel( 2 );

    if( radius_in_pixels < MIN_VIA_DRAW_SIZE )
    {
        fast_draw = true;
        fillvia = false;
    }

    if( fillvia )
    {
        GRFilledCircle( panel->GetClipBox(), aDC, m_Start + aOffset, radius, color );
    }
    else
    {
        GRCircle( panel->GetClipBox(), aDC, m_Start + aOffset, radius, 0, color );

        if ( fast_draw )
            return;

        GRCircle( panel->GetClipBox(), aDC, m_Start + aOffset, inner_radius, 0, color );
    }

    if( fillvia )
    {
        bool blackpenstate = false;

        if( screen->m_IsPrinting )
        {
            blackpenstate = GetGRForceBlackPenState();
            GRForceBlackPen( false );
            color = WHITE;
        }
        else
        {
            color = BLACK;     // or DARKGRAY;
        }

        if( (aDrawMode & GR_XOR) == 0)
            GRSetDrawMode( aDC, GR_COPY );

        // Draw hole if the radius is > 1pixel.
        if( aDC->LogicalToDeviceXRel( drill_radius ) > 1 )
            GRFilledCircle( panel->GetClipBox(), aDC, m_Start.x + aOffset.x,
                            m_Start.y + aOffset.y, drill_radius, 0, color, color );

        if( screen->m_IsPrinting )
            GRForceBlackPen( blackpenstate );
    }
    else
    {
        if( drill_radius < inner_radius )         // We can show the via hole
            GRCircle( panel->GetClipBox(), aDC, m_Start + aOffset, drill_radius, 0, color );
    }

    if( ShowClearance( displ_opts, this ) )
    {
        GRCircle( panel->GetClipBox(), aDC, m_Start + aOffset, radius + GetClearance(), 0, color );
    }

    // for Micro Vias, draw a partial cross : X on component layer, or + on copper layer
    // (so we can see 2 superimposed microvias ):
    if( GetViaType() == VIA_MICROVIA )
    {
        int ax, ay, bx, by;

        if( IsOnLayer( B_Cu ) )
        {
            ax = radius; ay = 0;
            bx = drill_radius; by = 0;
        }
        else
        {
            ax = ay = (radius * 707) / 1000;
            bx = by = (drill_radius * 707) / 1000;
        }

        // lines '|' or '\'
        GRLine( panel->GetClipBox(), aDC, m_Start.x + aOffset.x - ax,
                m_Start.y + aOffset.y - ay,
                m_Start.x + aOffset.x - bx,
                m_Start.y + aOffset.y - by, 0, color );
        GRLine( panel->GetClipBox(), aDC, m_Start.x + aOffset.x + bx,
                m_Start.y + aOffset.y + by,
                m_Start.x + aOffset.x + ax,
                m_Start.y + aOffset.y + ay, 0, color );

        // lines - or '/'
        GRLine( panel->GetClipBox(), aDC, m_Start.x + aOffset.x + ay,
                m_Start.y + aOffset.y - ax,
                m_Start.x + aOffset.x + by,
                m_Start.y + aOffset.y - bx, 0, color );
        GRLine( panel->GetClipBox(), aDC, m_Start.x + aOffset.x - by,
                m_Start.y + aOffset.y + bx,
                m_Start.x + aOffset.x - ay,
                m_Start.y + aOffset.y + ax, 0, color );
    }

    // for Buried Vias, draw a partial line : orient depending on layer pair
    // (so we can see superimposed buried vias ):
    if( GetViaType() == VIA_BLIND_BURIED )
    {
        int ax = 0, ay = radius, bx = 0, by = drill_radius;
        PCB_LAYER_ID layer_top, layer_bottom;

        LayerPair( &layer_top, &layer_bottom );

        // lines for the top layer
        RotatePoint( &ax, &ay, layer_top * 3600.0 / brd->GetCopperLayerCount( ) );
        RotatePoint( &bx, &by, layer_top * 3600.0 / brd->GetCopperLayerCount( ) );
        GRLine( panel->GetClipBox(), aDC, m_Start.x + aOffset.x - ax,
                m_Start.y + aOffset.y - ay,
                m_Start.x + aOffset.x - bx,
                m_Start.y + aOffset.y - by, 0, color );

        // lines for the bottom layer
        ax = 0; ay = radius; bx = 0; by = drill_radius;
        RotatePoint( &ax, &ay, layer_bottom * 3600.0 / brd->GetCopperLayerCount( ) );
        RotatePoint( &bx, &by, layer_bottom * 3600.0 / brd->GetCopperLayerCount( ) );
        GRLine( panel->GetClipBox(), aDC, m_Start.x + aOffset.x - ax,
                m_Start.y + aOffset.y - ay,
                m_Start.x + aOffset.x - bx,
                m_Start.y + aOffset.y - by, 0, color );
    }

    // Display the short netname:
    if( GetNetCode() == NETINFO_LIST::UNCONNECTED )
        return;

    if( displ_opts->m_DisplayNetNamesMode == 0 || displ_opts->m_DisplayNetNamesMode == 1 )
        return;

    NETINFO_ITEM* net = GetNet();

    if( net == NULL )
        return;

    int len = net->GetShortNetname().Len();

    if( len > 0 )
    {
        // calculate a good size for the text
        int tsize = m_Width / len;

        if( aDC->LogicalToDeviceXRel( tsize ) >= MIN_TEXT_SIZE )
        {
            tsize = (tsize * 7) / 10;        // small reduction to give a better look, inside via

            if( (aDrawMode & GR_XOR) == 0 )
                GRSetDrawMode( aDC, GR_COPY );

            EDA_RECT* clipbox = panel->GetClipBox();
            DrawGraphicHaloText( clipbox, aDC, m_Start,
                                 color, WHITE, BLACK, net->GetShortNetname(), 0,
                                 wxSize( tsize, tsize ),
                                 GR_TEXT_HJUSTIFY_CENTER, GR_TEXT_VJUSTIFY_CENTER,
                                 tsize / 7, false, false );
        }
    }
}