grid.cpp

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    SetTextColoursAndFont(grid, attr, dc, isSelected);

    grid.DrawTextRectangle(dc, grid.GetCellValue(row, col),
                           rect, hAlign, vAlign);
}

// ----------------------------------------------------------------------------
// wxGridCellNumberRenderer
// ----------------------------------------------------------------------------

wxString wxGridCellNumberRenderer::GetString(wxGrid& grid, int row, int col)
{
    wxGridTableBase *table = grid.GetTable();
    wxString text;
    if ( table->CanGetValueAs(row, col, wxGRID_VALUE_NUMBER) )
    {
        text.Printf(_T("%ld"), table->GetValueAsLong(row, col));
    }
    else
    {
        text = table->GetValue(row, col);
    }

    return text;
}

void wxGridCellNumberRenderer::Draw(wxGrid& grid,
                                    wxGridCellAttr& attr,
                                    wxDC& dc,
                                    const wxRect& rectCell,
                                    int row, int col,
                                    bool isSelected)
{
    wxGridCellRenderer::Draw(grid, attr, dc, rectCell, row, col, isSelected);

    SetTextColoursAndFont(grid, attr, dc, isSelected);

    // draw the text right aligned by default
    int hAlign, vAlign;
    attr.GetAlignment(&hAlign, &vAlign);
    hAlign = wxALIGN_RIGHT;

    wxRect rect = rectCell;
    rect.Inflate(-1);

    grid.DrawTextRectangle(dc, GetString(grid, row, col), rect, hAlign, vAlign);
}

wxSize wxGridCellNumberRenderer::GetBestSize(wxGrid& grid,
                                             wxGridCellAttr& attr,
                                             wxDC& dc,
                                             int row, int col)
{
    return DoGetBestSize(attr, dc, GetString(grid, row, col));
}

// ----------------------------------------------------------------------------
// wxGridCellFloatRenderer
// ----------------------------------------------------------------------------

wxGridCellFloatRenderer::wxGridCellFloatRenderer(int width, int precision)
{
    SetWidth(width);
    SetPrecision(precision);
}

wxGridCellRenderer *wxGridCellFloatRenderer::Clone() const
{
    wxGridCellFloatRenderer *renderer = new wxGridCellFloatRenderer;
    renderer->m_width = m_width;
    renderer->m_precision = m_precision;
    renderer->m_format = m_format;

    return renderer;
}

wxString wxGridCellFloatRenderer::GetString(wxGrid& grid, int row, int col)
{
    wxGridTableBase *table = grid.GetTable();

    bool hasDouble;
    double val;
    wxString text;
    if ( table->CanGetValueAs(row, col, wxGRID_VALUE_FLOAT) )
    {
        val = table->GetValueAsDouble(row, col);
        hasDouble = true;
    }
    else
    {
        text = table->GetValue(row, col);
        hasDouble = text.ToDouble(&val);
    }

    if ( hasDouble )
    {
        if ( !m_format )
        {
            if ( m_width == -1 )
            {
                if ( m_precision == -1 )
                {
                    // default width/precision
                    m_format = _T("%f");
                }
                else
                {
                    m_format.Printf(_T("%%.%df"), m_precision);
                }
            }
            else if ( m_precision == -1 )
            {
                // default precision
                m_format.Printf(_T("%%%d.f"), m_width);
            }
            else
            {
                m_format.Printf(_T("%%%d.%df"), m_width, m_precision);
            }
        }

        text.Printf(m_format, val);

    }
    //else: text already contains the string

    return text;
}

void wxGridCellFloatRenderer::Draw(wxGrid& grid,
                                   wxGridCellAttr& attr,
                                   wxDC& dc,
                                   const wxRect& rectCell,
                                   int row, int col,
                                   bool isSelected)
{
    wxGridCellRenderer::Draw(grid, attr, dc, rectCell, row, col, isSelected);

    SetTextColoursAndFont(grid, attr, dc, isSelected);

    // draw the text right aligned by default
    int hAlign, vAlign;
    attr.GetAlignment(&hAlign, &vAlign);
    hAlign = wxALIGN_RIGHT;

    wxRect rect = rectCell;
    rect.Inflate(-1);

    grid.DrawTextRectangle(dc, GetString(grid, row, col), rect, hAlign, vAlign);
}

wxSize wxGridCellFloatRenderer::GetBestSize(wxGrid& grid,
                                            wxGridCellAttr& attr,
                                            wxDC& dc,
                                            int row, int col)
{
    return DoGetBestSize(attr, dc, GetString(grid, row, col));
}

void wxGridCellFloatRenderer::SetParameters(const wxString& params)
{
    if ( !params )
    {
        // reset to defaults
        SetWidth(-1);
        SetPrecision(-1);
    }
    else
    {
        wxString tmp = params.BeforeFirst(_T(','));
        if ( !tmp.empty() )
        {
            long width;
            if ( tmp.ToLong(&width) )
            {
                SetWidth((int)width);
            }
            else
            {
                wxLogDebug(_T("Invalid wxGridCellFloatRenderer width parameter string '%s ignored"), params.c_str());
            }
        }
        tmp = params.AfterFirst(_T(','));
        if ( !tmp.empty() )
        {
            long precision;
            if ( tmp.ToLong(&precision) )
            {
                SetPrecision((int)precision);
            }
            else
            {
                wxLogDebug(_T("Invalid wxGridCellFloatRenderer precision parameter string '%s ignored"), params.c_str());
            }
        }
    }
}


// ----------------------------------------------------------------------------
// wxGridCellBoolRenderer
// ----------------------------------------------------------------------------

wxSize wxGridCellBoolRenderer::ms_sizeCheckMark;

// FIXME these checkbox size calculations are really ugly...

// between checkmark and box
static const wxCoord wxGRID_CHECKMARK_MARGIN = 2;

wxSize wxGridCellBoolRenderer::GetBestSize(wxGrid& grid,
                                           wxGridCellAttr& WXUNUSED(attr),
                                           wxDC& WXUNUSED(dc),
                                           int WXUNUSED(row),
                                           int WXUNUSED(col))
{
    // compute it only once (no locks for MT safeness in GUI thread...)
    if ( !ms_sizeCheckMark.x )
    {
        // get checkbox size
        wxCheckBox *checkbox = new wxCheckBox(&grid, wxID_ANY, wxEmptyString);
        wxSize size = checkbox->GetBestSize();
        wxCoord checkSize = size.y + 2*wxGRID_CHECKMARK_MARGIN;

        // FIXME wxGTK::wxCheckBox::GetBestSize() gives "wrong" result
#if defined(__WXGTK__) || defined(__WXMOTIF__)
        checkSize -= size.y / 2;
#endif

        delete checkbox;

        ms_sizeCheckMark.x = ms_sizeCheckMark.y = checkSize;
    }

    return ms_sizeCheckMark;
}

void wxGridCellBoolRenderer::Draw(wxGrid& grid,
                                  wxGridCellAttr& attr,
                                  wxDC& dc,
                                  const wxRect& rect,
                                  int row, int col,
                                  bool isSelected)
{
    wxGridCellRenderer::Draw(grid, attr, dc, rect, row, col, isSelected);

    // draw a check mark in the centre (ignoring alignment - TODO)
    wxSize size = GetBestSize(grid, attr, dc, row, col);

    // don't draw outside the cell
    wxCoord minSize = wxMin(rect.width, rect.height);
    if ( size.x >= minSize || size.y >= minSize )
    {
        // and even leave (at least) 1 pixel margin
        size.x = size.y = minSize - 2;
    }

    // draw a border around checkmark
    int vAlign, hAlign;
    attr.GetAlignment(& hAlign, &vAlign);

    wxRect rectBorder;
    if (hAlign == wxALIGN_CENTRE)
    {
        rectBorder.x = rect.x + rect.width/2 - size.x/2;
        rectBorder.y = rect.y + rect.height/2 - size.y/2;
        rectBorder.width = size.x;
        rectBorder.height = size.y;
    }
    else if (hAlign == wxALIGN_LEFT)
    {
        rectBorder.x = rect.x + 2;
        rectBorder.y = rect.y + rect.height/2 - size.y/2;
        rectBorder.width = size.x;
        rectBorder.height = size.y;
    }
    else if (hAlign == wxALIGN_RIGHT)
    {
        rectBorder.x = rect.x + rect.width - size.x - 2;
        rectBorder.y = rect.y + rect.height/2 - size.y/2;
        rectBorder.width = size.x;
        rectBorder.height = size.y;
    }

    bool value;
    if ( grid.GetTable()->CanGetValueAs(row, col, wxGRID_VALUE_BOOL) )
        value = grid.GetTable()->GetValueAsBool(row, col);
    else
    {
        wxString cellval( grid.GetTable()->GetValue(row, col) );
        value = !( !cellval || (cellval == wxT("0")) );
    }

    if ( value )
    {
        wxRect rectMark = rectBorder;
#ifdef __WXMSW__
        // MSW DrawCheckMark() is weird (and should probably be changed...)
        rectMark.Inflate(-wxGRID_CHECKMARK_MARGIN/2);
        rectMark.x++;
        rectMark.y++;
#else // !MSW
        rectMark.Inflate(-wxGRID_CHECKMARK_MARGIN);
#endif // MSW/!MSW

        dc.SetTextForeground(attr.GetTextColour());
        dc.DrawCheckMark(rectMark);
    }

    dc.SetBrush(*wxTRANSPARENT_BRUSH);
    dc.SetPen(wxPen(attr.GetTextColour(), 1, wxSOLID));
    dc.DrawRectangle(rectBorder);
}

// ----------------------------------------------------------------------------
// wxGridCellAttr
// ----------------------------------------------------------------------------

void wxGridCellAttr::Init(wxGridCellAttr *attrDefault)
{
    m_nRef = 1;

    m_isReadOnly = Unset;

    m_renderer = NULL;
    m_editor = NULL;

    m_attrkind = wxGridCellAttr::Cell;

    m_sizeRows = m_sizeCols = 1;
    m_overflow = UnsetOverflow;

    SetDefAttr(attrDefault);
}

wxGridCellAttr *wxGridCellAttr::Clone() const
{
    wxGridCellAttr *attr = new wxGridCellAttr(m_defGridAttr);

    if ( HasTextColour() )
        attr->SetTextColour(GetTextColour());
    if ( HasBackgroundColour() )
        attr->SetBackgroundColour(GetBackgroundColour());
    if ( HasFont() )
        attr->SetFont(GetFont());
    if ( HasAlignment() )
        attr->SetAlignment(m_hAlign, m_vAlign);

    attr->SetSize( m_sizeRows, m_sizeCols );

    if ( m_renderer )
    {
        attr->SetRenderer(m_renderer);
        m_renderer->IncRef();
    }
    if ( m_editor )
    {
        attr->SetEditor(m_editor);
        m_editor->IncRef();
    }

    if ( IsReadOnly() )
        attr->SetReadOnly();

    attr->SetKind( m_attrkind );

    return attr;
}

void wxGridCellAttr::MergeWith(wxGridCellAttr *mergefrom)
{
    if ( !HasTextColour() && mergefrom->HasTextColour() )
        SetTextColour(mergefrom->GetTextColour());
    if ( !HasBackgroundColour() && mergefrom->HasBackgroundColour() )
        SetBackgroundColour(mergefrom->GetBackgroundColour());
    if ( !HasFont() && mergefrom->HasFont() )
        SetFont(mergefrom->GetFont());
    if ( !HasAlignment() && mergefrom->HasAlignment() ){
        int hAlign, vAlign;
        mergefrom->GetAlignment( &hAlign, &vAlign);
        SetAlignment(hAlign, vAlign);
    }
    if ( !HasSize() && mergefrom->HasSize() )
        mergefrom->GetSize( &m_sizeRows, &m_sizeCols );

    // Directly access member functions as GetRender/Editor don't just return
    // m_renderer/m_editor
    //
    // Maybe add support for merge of Render and Editor?
    if (!HasRenderer() && mergefrom->HasRenderer() )
    {
        m_renderer = mergefrom->m_renderer;
        m_renderer->IncRef();
    }
    if ( !HasEditor() && mergefrom->HasEditor() )
    {
        m_editor =  mergefrom->m_editor;
        m_editor->IncRef();
    }
    if ( !HasReadWriteMode()  && mergefrom->HasReadWriteMode() )
        SetReadOnly(mergefrom->IsReadOnly());

    if (!HasOverflowMode()  && mergefrom->HasOverflowMode() )
        SetOverflow(mergefrom->GetOverflow());

    SetDefAttr(mergefrom->m_defGridAttr);
}

void wxGridCellAttr::SetSize(int num_rows, int num_cols)
{
    // The size of a cell is normally 1,1

    // If this cell is larger (2,2) then this is the top left cell
    // the other cells that will be covered (lower right cells) must be
    // set to negative or zero values such that
    // row + num_rows of the covered cell points to the larger cell (this cell)
    // same goes for the col + num_cols.

    // Size of 0,0 is NOT valid, neither is <=0 and any positive value

    wxASSERT_MSG( (!((num_rows>0)&&(num_cols<=0)) ||
                  !((num_rows<=0)&&(num_cols>0)) ||
                  !((num_rows==0)&&(num_cols==0))),
                  wxT("wxGridCellAttr::SetSize only takes two postive values or negative/zero values"));

    m_sizeRows = num_rows;
    m_sizeCols = num_cols;
}

const wxColour& wxGridCellAttr::GetTextColour() const
{
    if (HasTextColour())
    {
        return m_colText;
    }
    else if (m_defGridAttr && m_defGridAttr != this)
    {
        return m_defGridAttr->GetTextColour();
    }
    else
    {
        wxFAIL_MSG(wxT("Missing default cell attribute"));
        return wxNullColour;
    }
}


const wxColour& wxGridCellAttr::GetBackground