dc.cpp

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    }
#else
    if ( ::TextOut(GetHdc(), XLOG2DEV(x), YLOG2DEV(y),
                   text.c_str(), text.length()) == 0 )
    {
        wxLogLastError(wxT("TextOut"));
    }
#endif

    // restore the old parameters (text foreground colour may be left because
    // it never is set to anything else, but background should remain
    // transparent even if we just drew an opaque string)
    if ( m_textBackgroundColour.Ok() )
        (void)SetBkColor(GetHdc(), old_background);

    SetBkMode(GetHdc(), TRANSPARENT);
}

void wxDC::DoDrawRotatedText(const wxString& text,
                             wxCoord x, wxCoord y,
                             double angle)
{
    WXMICROWIN_CHECK_HDC

    // we test that we have some font because otherwise we should still use the
    // "else" part below to avoid that DrawRotatedText(angle = 180) and
    // DrawRotatedText(angle = 0) use different fonts (we can't use the default
    // font for drawing rotated fonts unfortunately)
    if ( (angle == 0.0) && m_font.Ok() )
    {
        DoDrawText(text, x, y);
    }
#ifndef __WXMICROWIN__
    else
    {
        // NB: don't take DEFAULT_GUI_FONT (a.k.a. wxSYS_DEFAULT_GUI_FONT)
        //     because it's not TrueType and so can't have non zero
        //     orientation/escapement under Win9x
        wxFont font = m_font.Ok() ? m_font : *wxSWISS_FONT;
        HFONT hfont = (HFONT)font.GetResourceHandle();
        LOGFONT lf;
        if ( ::GetObject(hfont, sizeof(lf), &lf) == 0 )
        {
            wxLogLastError(wxT("GetObject(hfont)"));
        }

        // GDI wants the angle in tenth of degree
        long angle10 = (long)(angle * 10);
        lf.lfEscapement = angle10;
        lf. lfOrientation = angle10;

        hfont = ::CreateFontIndirect(&lf);
        if ( !hfont )
        {
            wxLogLastError(wxT("CreateFont"));
        }
        else
        {
            HFONT hfontOld = (HFONT)::SelectObject(GetHdc(), hfont);

            DrawAnyText(text, x, y);

            (void)::SelectObject(GetHdc(), hfontOld);
            (void)::DeleteObject(hfont);
        }

        // call the bounding box by adding all four vertices of the rectangle
        // containing the text to it (simpler and probably not slower than
        // determining which of them is really topmost/leftmost/...)
        wxCoord w, h;
        GetTextExtent(text, &w, &h);

        double rad = DegToRad(angle);

        // "upper left" and "upper right"
        CalcBoundingBox(x, y);
        CalcBoundingBox(x + wxCoord(w*cos(rad)), y - wxCoord(w*sin(rad)));

        // "bottom left" and "bottom right"
        x += (wxCoord)(h*sin(rad));
        y += (wxCoord)(h*cos(rad));
        CalcBoundingBox(x, y);
        CalcBoundingBox(x + wxCoord(w*cos(rad)), y - wxCoord(w*sin(rad)));
    }
#endif
}

// ---------------------------------------------------------------------------
// set GDI objects
// ---------------------------------------------------------------------------

#if wxUSE_PALETTE

void wxDC::DoSelectPalette(bool realize)
{
    WXMICROWIN_CHECK_HDC

    // Set the old object temporarily, in case the assignment deletes an object
    // that's not yet selected out.
    if (m_oldPalette)
    {
        ::SelectPalette(GetHdc(), (HPALETTE) m_oldPalette, FALSE);
        m_oldPalette = 0;
    }

    if ( m_palette.Ok() )
    {
        HPALETTE oldPal = ::SelectPalette(GetHdc(),
                                          GetHpaletteOf(m_palette),
                                          false);
        if (!m_oldPalette)
            m_oldPalette = (WXHPALETTE) oldPal;

        if (realize)
            ::RealizePalette(GetHdc());
    }
}

void wxDC::SetPalette(const wxPalette& palette)
{
    if ( palette.Ok() )
    {
        m_palette = palette;
        DoSelectPalette(true);
    }
}

void wxDC::InitializePalette()
{
    if ( wxDisplayDepth() <= 8 )
    {
        // look for any window or parent that has a custom palette. If any has
        // one then we need to use it in drawing operations
        wxWindow *win = m_canvas->GetAncestorWithCustomPalette();

        m_hasCustomPalette = win && win->HasCustomPalette();
        if ( m_hasCustomPalette )
        {
            m_palette = win->GetPalette();

            // turn on MSW translation for this palette
            DoSelectPalette();
        }
    }
}

#endif // wxUSE_PALETTE

// SetFont/Pen/Brush() really ask to be implemented as a single template
// function... but doing it is not worth breaking OpenWatcom build <sigh>

void wxDC::SetFont(const wxFont& font)
{
    WXMICROWIN_CHECK_HDC

    if ( font == m_font )
        return;

    if ( font.Ok() )
    {
        HGDIOBJ hfont = ::SelectObject(GetHdc(), GetHfontOf(font));
        if ( hfont == HGDI_ERROR )
        {
            wxLogLastError(_T("SelectObject(font)"));
        }
        else // selected ok
        {
            if ( !m_oldFont )
                m_oldFont = (WXHPEN)hfont;

            m_font = font;
        }
    }
    else // invalid font, reset the current font
    {
        if ( m_oldFont )
        {
            if ( ::SelectObject(GetHdc(), (HPEN) m_oldFont) == HGDI_ERROR )
            {
                wxLogLastError(_T("SelectObject(old font)"));
            }

            m_oldFont = 0;
        }

        m_font = wxNullFont;
    }
}

void wxDC::SetPen(const wxPen& pen)
{
    WXMICROWIN_CHECK_HDC

    if ( pen == m_pen )
        return;

    if ( pen.Ok() )
    {
        HGDIOBJ hpen = ::SelectObject(GetHdc(), GetHpenOf(pen));
        if ( hpen == HGDI_ERROR )
        {
            wxLogLastError(_T("SelectObject(pen)"));
        }
        else // selected ok
        {
            if ( !m_oldPen )
                m_oldPen = (WXHPEN)hpen;

            m_pen = pen;
        }
    }
    else // invalid pen, reset the current pen
    {
        if ( m_oldPen )
        {
            if ( ::SelectObject(GetHdc(), (HPEN) m_oldPen) == HGDI_ERROR )
            {
                wxLogLastError(_T("SelectObject(old pen)"));
            }

            m_oldPen = 0;
        }

        m_pen = wxNullPen;
    }
}

void wxDC::SetBrush(const wxBrush& brush)
{
    WXMICROWIN_CHECK_HDC

    if ( brush == m_brush )
        return;

    if ( brush.Ok() )
    {
        // we must make sure the brush is aligned with the logical coordinates
        // before selecting it
        wxBitmap *stipple = brush.GetStipple();
        if ( stipple && stipple->Ok() )
        {
            if ( !::SetBrushOrgEx
                    (
                        GetHdc(),
                        m_deviceOriginX % stipple->GetWidth(),
                        m_deviceOriginY % stipple->GetHeight(),
                        NULL                    // [out] previous brush origin
                    ) )
            {
                wxLogLastError(_T("SetBrushOrgEx()"));
            }
        }

        HGDIOBJ hbrush = ::SelectObject(GetHdc(), GetHbrushOf(brush));
        if ( hbrush == HGDI_ERROR )
        {
            wxLogLastError(_T("SelectObject(brush)"));
        }
        else // selected ok
        {
            if ( !m_oldBrush )
                m_oldBrush = (WXHPEN)hbrush;

            m_brush = brush;
        }
    }
    else // invalid brush, reset the current brush
    {
        if ( m_oldBrush )
        {
            if ( ::SelectObject(GetHdc(), (HPEN) m_oldBrush) == HGDI_ERROR )
            {
                wxLogLastError(_T("SelectObject(old brush)"));
            }

            m_oldBrush = 0;
        }

        m_brush = wxNullBrush;
    }
}

void wxDC::SetBackground(const wxBrush& brush)
{
    WXMICROWIN_CHECK_HDC

    m_backgroundBrush = brush;

    if ( m_backgroundBrush.Ok() )
    {
        (void)SetBkColor(GetHdc(), m_backgroundBrush.GetColour().GetPixel());
    }
}

void wxDC::SetBackgroundMode(int mode)
{
    WXMICROWIN_CHECK_HDC

    m_backgroundMode = mode;

    // SetBackgroundColour now only refers to text background
    // and m_backgroundMode is used there
}

void wxDC::SetLogicalFunction(int function)
{
    WXMICROWIN_CHECK_HDC

    m_logicalFunction = function;

    SetRop(m_hDC);
}

void wxDC::SetRop(WXHDC dc)
{
    if ( !dc || m_logicalFunction < 0 )
        return;

    int rop;

    switch (m_logicalFunction)
    {
        case wxCLEAR:        rop = R2_BLACK;         break;
        case wxXOR:          rop = R2_XORPEN;        break;
        case wxINVERT:       rop = R2_NOT;           break;
        case wxOR_REVERSE:   rop = R2_MERGEPENNOT;   break;
        case wxAND_REVERSE:  rop = R2_MASKPENNOT;    break;
        case wxCOPY:         rop = R2_COPYPEN;       break;
        case wxAND:          rop = R2_MASKPEN;       break;
        case wxAND_INVERT:   rop = R2_MASKNOTPEN;    break;
        case wxNO_OP:        rop = R2_NOP;           break;
        case wxNOR:          rop = R2_NOTMERGEPEN;   break;
        case wxEQUIV:        rop = R2_NOTXORPEN;     break;
        case wxSRC_INVERT:   rop = R2_NOTCOPYPEN;    break;
        case wxOR_INVERT:    rop = R2_MERGENOTPEN;   break;
        case wxNAND:         rop = R2_NOTMASKPEN;    break;
        case wxOR:           rop = R2_MERGEPEN;      break;
        case wxSET:          rop = R2_WHITE;         break;

        default:
           wxFAIL_MSG( wxT("unsupported logical function") );
           return;
    }

    SetROP2(GetHdc(), rop);
}

bool wxDC::StartDoc(const wxString& WXUNUSED(message))
{
    // We might be previewing, so return true to let it continue.
    return true;
}

void wxDC::EndDoc()
{
}

void wxDC::StartPage()
{
}

void wxDC::EndPage()
{
}

// ---------------------------------------------------------------------------
// text metrics
// ---------------------------------------------------------------------------

wxCoord wxDC::GetCharHeight() const
{
    WXMICROWIN_CHECK_HDC_RET(0)

    TEXTMETRIC lpTextMetric;

    GetTextMetrics(GetHdc(), &lpTextMetric);

    return lpTextMetric.tmHeight;
}

wxCoord wxDC::GetCharWidth() const
{
    WXMICROWIN_CHECK_HDC_RET(0)

    TEXTMETRIC lpTextMetric;

    GetTextMetrics(GetHdc(), &lpTextMetric);

    return lpTextMetric.tmAveCharWidth;
}

void wxDC::DoGetTextExtent(const wxString& string, wxCoord *x, wxCoord *y,
                           wxCoord *descent, wxCoord *externalLeading,
                           wxFont *font) const
{
#ifdef __WXMICROWIN__
    if (!GetHDC())
    {
        if (x) *x = 0;
        if (y) *y = 0;
        if (descent) *descent = 0;
        if (externalLeading) *externalLeading = 0;
        return;
    }
#endif // __WXMICROWIN__

    HFONT hfontOld;
    if ( font )
    {
        wxASSERT_MSG( font->Ok(), _T("invalid font in wxDC::GetTextExtent") );

        hfontOld = (HFONT)::SelectObject(GetHdc(), GetHfontOf(*font));
    }
    else // don't change the font
    {
        hfontOld = 0;
    }

    SIZE sizeRect;
    TEXTMETRIC tm;

    ::GetTextExtentPoint32(GetHdc(), string, string.length(), &sizeRect);
    GetTextMetrics(GetHdc(), &tm);

    if (x)
        *x = sizeRect.cx;
    if (y)
        *y = sizeRect.cy;
    if (descent)
        *descent = tm.tmDescent;
    if (externalLeading)
        *externalLeading = tm.tmExternalLeading;

    if ( hfontOld )
    {
        ::SelectObject(GetHdc(), hfontOld);
    }
}


// Each element of the array will be the width of the string up to and