X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/cfa87e8121c94814302ad0a94c7c043c8bb277f6..198be845897a79ba350ae7f93db536ddb2eccfb2:/src/common/dcbase.cpp

diff --git a/src/common/dcbase.cpp b/src/common/dcbase.cpp
index d659598d0e..67f907abca 100644
--- a/src/common/dcbase.cpp
+++ b/src/common/dcbase.cpp
@@ -31,6 +31,1449 @@
     #include "wx/math.h"
 #endif
 
+
+
+#if wxUSE_NEW_DC
+
+//----------------------------------------------------------------------------
+// wxDCFactory
+//----------------------------------------------------------------------------
+
+wxDCFactory *wxDCFactory::m_factory = NULL;
+
+void wxDCFactory::SetDCFactory( wxDCFactory *factory )
+{
+    if (wxDCFactory::m_factory)
+        delete wxDCFactory::m_factory;
+
+    wxDCFactory::m_factory = factory;
+}
+
+wxDCFactory *wxDCFactory::GetFactory()
+{
+    if (!wxDCFactory::m_factory)
+        wxDCFactory::m_factory = new wxNativeDCFactory;
+
+    return wxDCFactory::m_factory;
+}
+
+//-----------------------------------------------------------------------------
+// wxNativeDCFactory
+//-----------------------------------------------------------------------------
+
+wxImplDC* wxNativeDCFactory::CreateWindowDC()
+{ 
+#if defined(__WXMSW__)
+    return new wxWindowsWindowImplDC();
+#elif defined(__WXGTK20__)
+    return new wxGTKWindowImplDC();
+#elif defined(__WXGTK__)
+    return new wxGTKWindowImplDC();
+#elif defined(__WXMAC__)
+    return new wxMacWindowImplDC();
+#elif defined(__WXCOCOA__)
+    return new wxCocoaWindowImplDC();
+#elif defined(__WXMOTIF__)
+    return new wxMotifWindowImplDC();
+#elif defined(__WXX11__)
+    return new wxX11WindowImplDC();
+#elif defined(__WXMGL__)
+    return new wxMGLWindowImplDC();
+#elif defined(__WXDFB__)
+    return new wxDFBWindowImplDC();
+#elif defined(__WXPM__)
+    return new wxPMWindowImplDC();
+#elif defined(__PALMOS__)
+    return new wxPalmWindowImplDC();
+#endif
+}
+
+wxImplDC* wxNativeDCFactory::CreateWindowDC( wxWindow *window )
+{ 
+#if defined(__WXMSW__)
+    return new wxWindowsWindowImplDC( window );
+#elif defined(__WXGTK20__)
+    return new wxGTKWindowImplDC( window );
+#elif defined(__WXGTK__)
+    return new wxGTKWindowImplDC( window );
+#elif defined(__WXMAC__)
+    return new wxMacWindowImplDC( window );
+#elif defined(__WXCOCOA__)
+    return new wxCocoaWindowImplDC( window );
+#elif defined(__WXMOTIF__)
+    return new wxMotifWindowImplDC( window );
+#elif defined(__WXX11__)
+    return new wxX11WindowImplDC( window );
+#elif defined(__WXMGL__)
+    return new wxMGLWindowImplDC( window );
+#elif defined(__WXDFB__)
+    return new wxDFBWindowImplDC( window );
+#elif defined(__WXPM__)
+    return new wxPMWindowImplDC( window );
+#elif defined(__PALMOS__)
+    return new wxPalmWindowImplDC( window );
+#endif
+}
+
+wxImplDC* wxNativeDCFactory::CreateClientDC()
+{
+#if defined(__WXMSW__)
+    return new wxWindowsClientImplDC();
+#elif defined(__WXGTK20__)
+    return new wxGTKClientImplDC();
+#elif defined(__WXGTK__)
+    return new wxGTKClientImplDC();
+#elif defined(__WXMAC__)
+    return new wxMacClientImplDC();
+#elif defined(__WXCOCOA__)
+    return new wxCocoaClientImplDC();
+#elif defined(__WXMOTIF__)
+    return new wxMotifClientImplDC();
+#elif defined(__WXX11__)
+    return new wxX11ClientImplDC();
+#elif defined(__WXMGL__)
+    return new wxMGLClientImplDC();
+#elif defined(__WXDFB__)
+    return new wxDFBClientImplDC();
+#elif defined(__WXPM__)
+    return new wxPMClientImplDC();
+#elif defined(__PALMOS__)
+    return new wxPalmClientImplDC();
+#endif
+}
+
+wxImplDC* wxNativeDCFactory::CreateClientDC( wxWindow *window )
+{
+#if defined(__WXMSW__)
+    return new wxWindowsClientImplDC( window );
+#elif defined(__WXGTK20__)
+    return new wxGTKClientImplDC( window );
+#elif defined(__WXGTK__)
+    return new wxGTKClientImplDC( window );
+#elif defined(__WXMAC__)
+    return new wxMacClientImplDC( window );
+#elif defined(__WXCOCOA__)
+    return new wxCocoaClientImplDC( window );
+#elif defined(__WXMOTIF__)
+    return new wxMotifClientImplDC( window );
+#elif defined(__WXX11__)
+    return new wxX11ClientImplDC( window );
+#elif defined(__WXMGL__)
+    return new wxMGLClientImplDC( window );
+#elif defined(__WXDFB__)
+    return new wxDFBClientImplDC( window );
+#elif defined(__WXPM__)
+    return new wxPMClientImplDC( window );
+#elif defined(__PALMOS__)
+    return new wxPalmClientImplDC( window );
+#endif
+}
+
+wxImplDC* wxNativeDCFactory::CreatePaintDC()
+{
+#if defined(__WXMSW__)
+    return new wxWindowsPaintImplDC();
+#elif defined(__WXGTK20__)
+    return new wxGTKPaintImplDC();
+#elif defined(__WXGTK__)
+    return new wxGTKPaintImplDC();
+#elif defined(__WXMAC__)
+    return new wxMacPaintImplDC();
+#elif defined(__WXCOCOA__)
+    return new wxCocoaPaintImplDC();
+#elif defined(__WXMOTIF__)
+    return new wxMotifPaintImplDC();
+#elif defined(__WXX11__)
+    return new wxX11PaintImplDC();
+#elif defined(__WXMGL__)
+    return new wxMGLPaintImplDC();
+#elif defined(__WXDFB__)
+    return new wxDFBPaintImplDC();
+#elif defined(__WXPM__)
+    return new wxPMPaintImplDC();
+#elif defined(__PALMOS__)
+    return new wxPalmPaintImplDC();
+#endif
+}
+
+wxImplDC* wxNativeDCFactory::CreatePaintDC( wxWindow *window )
+{
+#if defined(__WXMSW__)
+    return new wxWindowsPaintImplDC( window );
+#elif defined(__WXGTK20__)
+    return new wxGTKPaintImplDC( window );
+#elif defined(__WXGTK__)
+    return new wxGTKPaintImplDC( window );
+#elif defined(__WXMAC__)
+    return new wxMacPaintImplDC( window );
+#elif defined(__WXCOCOA__)
+    return new wxCocoaPaintImplDC( window );
+#elif defined(__WXMOTIF__)
+    return new wxMotifPaintImplDC( window );
+#elif defined(__WXX11__)
+    return new wxX11PaintImplDC( window );
+#elif defined(__WXMGL__)
+    return new wxMGLPaintImplDC( window );
+#elif defined(__WXDFB__)
+    return new wxDFBPaintImplDC( window );
+#elif defined(__WXPM__)
+    return new wxPMPaintImplDC( window );
+#elif defined(__PALMOS__)
+    return new wxPalmPaintImplDC( window );
+#endif
+}
+
+wxImplDC* wxNativeDCFactory::CreateMemoryDC()
+{
+#if defined(__WXMSW__)
+    return new wxWindowsMemoryImplDC();
+#elif defined(__WXGTK20__)
+    return new wxGTKMemoryImplDC();
+#elif defined(__WXGTK__)
+    return new wxGTKMemoryImplDC();
+#elif defined(__WXMAC__)
+    return new wxMacMemoryImplDC();
+#elif defined(__WXCOCOA__)
+    return new wxCocoaMemoryImplDC();
+#elif defined(__WXMOTIF__)
+    return new wxMotifMemoryImplDC();
+#elif defined(__WXX11__)
+    return new wxX11MemoryImplDC();
+#elif defined(__WXMGL__)
+    return new wxMGLMemoryImplDC();
+#elif defined(__WXDFB__)
+    return new wxDFBMemoryImplDC();
+#elif defined(__WXPM__)
+    return new wxPMMemoryImplDC();
+#elif defined(__PALMOS__)
+    return new wxPalmMemoryImplDC();
+#endif
+}
+
+wxImplDC* wxNativeDCFactory::CreateMemoryDC( wxBitmap &bitmap )
+{
+#if defined(__WXMSW__)
+    return new wxWindowsMemoryImplDC( bitmap );
+#elif defined(__WXGTK20__)
+    return new wxGTKMemoryImplDC( bitmap );
+#elif defined(__WXGTK__)
+    return new wxGTKMemoryImplDC( bitmap );
+#elif defined(__WXMAC__)
+    return new wxMacMemoryImplDC( bitmap );
+#elif defined(__WXCOCOA__)
+    return new wxCocoaMemoryImplDC( bitmap );
+#elif defined(__WXMOTIF__)
+    return new wxMotifMemoryImplDC( bitmap );
+#elif defined(__WXX11__)
+    return new wxX11MemoryImplDC( bitmap );
+#elif defined(__WXMGL__)
+    return new wxMGLMemoryImplDC( bitmap );
+#elif defined(__WXDFB__)
+    return new wxDFBMemoryImplDC( bitmap );
+#elif defined(__WXPM__)
+    return new wxPMMemoryImplDC( bitmap );
+#elif defined(__PALMOS__)
+    return new wxPalmMemoryImplDC( bitmap );
+#endif
+}
+
+wxImplDC* wxNativeDCFactory::CreateMemoryDC( wxDC *dc )
+{
+#if defined(__WXMSW__)
+    return new wxWindowsMemoryImplDC( dc );
+#elif defined(__WXGTK20__)
+    return new wxGTKMemoryImplDC( dc );
+#elif defined(__WXGTK__)
+    return new wxGTKMemoryImplDC( dc );
+#elif defined(__WXMAC__)
+    return new wxMacMemoryImplDC( dc );
+#elif defined(__WXCOCOA__)
+    return new wxCocoaMemoryImplDC( dc );
+#elif defined(__WXMOTIF__)
+    return new wxMotifMemoryImplDC( dc );
+#elif defined(__WXX11__)
+    return new wxX11MemoryImplDC( dc );
+#elif defined(__WXMGL__)
+    return new wxMGLMemoryImplDC( dc );
+#elif defined(__WXDFB__)
+    return new wxDFBMemoryImplDC( dc );
+#elif defined(__WXPM__)
+    return new wxPMMemoryImplDC( dc );
+#elif defined(__PALMOS__)
+    return new wxPalmMemoryImplDC( dc );
+#endif
+}
+
+//-----------------------------------------------------------------------------
+// wxWindowDC
+//-----------------------------------------------------------------------------
+
+IMPLEMENT_DYNAMIC_CLASS(wxWindowDC, wxDC)
+
+wxWindow::wxWindowDC()
+{
+    wxDCFactory *factory = wxDCFactory::GetFactory();
+    m_pimpl = factory->CreateWindowDC();
+}
+
+wxWindow::wxWindowDC( wxWindow *win )
+{
+    wxDCFactory *factory = wxDCFactory::GetFactory();
+    m_pimpl = factory->CreateWindowDC( win );
+}
+
+//-----------------------------------------------------------------------------
+// wxClientDC
+//-----------------------------------------------------------------------------
+
+IMPLEMENT_DYNAMIC_CLASS(wxClientDC, wxDC)
+
+wxClientDC::wxClientDC()
+{
+    wxDCFactory *factory = wxDCFactory::GetFactory();
+    m_pimpl = factory->CreateClientDC();
+}
+
+wxClientDC::wxClientDC( wxWindow *win )
+{
+    wxDCFactory *factory = wxDCFactory::GetFactory();
+    m_pimpl = factory->CreateClientDC( win );
+}
+
+//-----------------------------------------------------------------------------
+// wxMemoryDC
+//-----------------------------------------------------------------------------
+
+IMPLEMENT_DYNAMIC_CLASS(wxMemoryDC, wxDC)
+
+wxMemoryDC::wxMemoryDC()
+{
+    wxDCFactory *factory = wxDCFactory::GetFactory();
+    m_pimpl = factory->CreateMemoryDC();
+}
+
+wxMemoryDC::wxMemoryDC( wxBitmap& bitmap )
+{
+    wxDCFactory *factory = wxDCFactory::GetFactory();
+    m_pimpl = factory->CreateMemoryDC( bitmap );
+}
+
+wxMemoryDC::wxMemoryDC( wxDC *dc )
+{
+    wxDCFactory *factory = wxDCFactory::GetFactory();
+    m_pimpl = factory->CreateMemoryDC( dc );
+}
+    
+//-----------------------------------------------------------------------------
+// wxPaintDC
+//-----------------------------------------------------------------------------
+
+IMPLEMENT_DYNAMIC_CLASS(wxPaintDC, wxDC)
+
+wxPaintDC::wxPaintDC()
+{
+    wxDCFactory *factory = wxDCFactory::GetFactory();
+    m_pimpl = factory->CreatePaintDC();
+}
+
+wxPaintDC::wxPaintDC( wxWindow *win )
+{
+    wxDCFactory *factory = wxDCFactory::GetFactory();
+    m_pimpl = factory->CreatePaintDC( win );
+}
+
+//-----------------------------------------------------------------------------
+// wxImplDC
+//-----------------------------------------------------------------------------
+
+IMPLEMENT_ABSTRACT_CLASS(wxImplDC, wxObject)
+
+wxImplDC::wxImplDC( wxDC *owner )
+        : m_colour(wxColourDisplay())
+        , m_ok(true)
+        , m_clipping(false)
+        , m_isInteractive(0)
+        , m_isBBoxValid(false)
+        , m_logicalOriginX(0), m_logicalOriginY(0)
+        , m_deviceOriginX(0), m_deviceOriginY(0)
+        , m_deviceLocalOriginX(0), m_deviceLocalOriginY(0)
+        , m_logicalScaleX(1.0), m_logicalScaleY(1.0)
+        , m_userScaleX(1.0), m_userScaleY(1.0)
+        , m_scaleX(1.0), m_scaleY(1.0)
+        , m_signX(1), m_signY(1)
+        , m_minX(0), m_minY(0), m_maxX(0), m_maxY(0)
+        , m_clipX1(0), m_clipY1(0), m_clipX2(0), m_clipY2(0)
+        , m_logicalFunction(wxCOPY)
+        , m_backgroundMode(wxTRANSPARENT)
+        , m_mappingMode(wxMM_TEXT)
+        , m_pen()
+        , m_brush()
+        , m_backgroundBrush(*wxTRANSPARENT_BRUSH)
+        , m_textForegroundColour(*wxBLACK)
+        , m_textBackgroundColour(*wxWHITE)
+        , m_font()
+#if wxUSE_PALETTE
+        , m_palette()
+        , m_hasCustomPalette(false)
+#endif // wxUSE_PALETTE
+{
+    m_owner = owner;
+
+    m_mm_to_pix_x = (double)wxGetDisplaySize().GetWidth() /
+                    (double)wxGetDisplaySizeMM().GetWidth();
+    m_mm_to_pix_y = (double)wxGetDisplaySize().GetHeight() /
+                    (double)wxGetDisplaySizeMM().GetHeight();
+                    
+    ResetBoundingBox();
+    ResetClipping();
+}
+
+wxImplDC::~wxImplDC()
+{
+}
+
+#if WXWIN_COMPATIBILITY_2_8
+    // for compatibility with the old code when wxCoord was long everywhere
+void wxImplDC::GetTextExtent(const wxString& string,
+                       long *x, long *y,
+                       long *descent,
+                       long *externalLeading,
+                       const wxFont *theFont) const
+    {
+        wxCoord x2, y2, descent2, externalLeading2;
+        DoGetTextExtent(string, &x2, &y2,
+                        &descent2, &externalLeading2,
+                        theFont);
+        if ( x )
+            *x = x2;
+        if ( y )
+            *y = y2;
+        if ( descent )
+            *descent = descent2;
+        if ( externalLeading )
+            *externalLeading = externalLeading2;
+    }
+
+void wxImplDC::GetLogicalOrigin(long *x, long *y) const 
+    {
+        wxCoord x2, y2;
+        DoGetLogicalOrigin(&x2, &y2);
+        if ( x )
+            *x = x2;
+        if ( y )
+            *y = y2;
+    }
+
+void wxImplDC::GetDeviceOrigin(long *x, long *y) const 
+    {
+        wxCoord x2, y2;
+        DoGetDeviceOrigin(&x2, &y2);
+        if ( x )
+            *x = x2;
+        if ( y )
+            *y = y2;
+    } 
+    
+void wxImplDC::GetClippingBox(long *x, long *y, long *w, long *h) const 
+    {
+        wxCoord xx,yy,ww,hh;
+        DoGetClippingBox(&xx, &yy, &ww, &hh);
+        if (x) *x = xx;
+        if (y) *y = yy;
+        if (w) *w = ww;
+        if (h) *h = hh;
+    } 
+#endif  // WXWIN_COMPATIBILITY_2_8
+
+
+
+// ----------------------------------------------------------------------------
+// coordinate conversions and transforms
+// ----------------------------------------------------------------------------
+
+wxCoord wxImplDC::DeviceToLogicalX(wxCoord x) const
+{
+    return wxRound((double)(x - m_deviceOriginX - m_deviceLocalOriginX) / m_scaleX) * m_signX + m_logicalOriginX;
+}
+
+wxCoord wxImplDC::DeviceToLogicalY(wxCoord y) const
+{
+    return wxRound((double)(y - m_deviceOriginY - m_deviceLocalOriginY) / m_scaleY) * m_signY + m_logicalOriginY;
+}
+
+wxCoord wxImplDC::DeviceToLogicalXRel(wxCoord x) const
+{
+    return wxRound((double)(x) / m_scaleX);
+}
+
+wxCoord wxImplDC::DeviceToLogicalYRel(wxCoord y) const
+{
+    return wxRound((double)(y) / m_scaleY);
+}
+
+wxCoord wxImplDC::LogicalToDeviceX(wxCoord x) const
+{
+    return wxRound((double)(x - m_logicalOriginX) * m_scaleX) * m_signX + m_deviceOriginX + m_deviceLocalOriginX;
+}
+
+wxCoord wxImplDC::LogicalToDeviceY(wxCoord y) const
+{
+    return wxRound((double)(y - m_logicalOriginY) * m_scaleY) * m_signY + m_deviceOriginY + m_deviceLocalOriginY;
+}
+
+wxCoord wxImplDC::LogicalToDeviceXRel(wxCoord x) const
+{
+    return wxRound((double)(x) * m_scaleX);
+}
+
+wxCoord wxImplDC::LogicalToDeviceYRel(wxCoord y) const
+{
+    return wxRound((double)(y) * m_scaleY);
+}
+
+void wxImplDC::ComputeScaleAndOrigin()
+{
+    m_scaleX = m_logicalScaleX * m_userScaleX;
+    m_scaleY = m_logicalScaleY * m_userScaleY;
+}
+
+void wxImplDC::SetMapMode( int mode )
+{
+    switch (mode)
+    {
+        case wxMM_TWIPS:
+          SetLogicalScale( twips2mm*m_mm_to_pix_x, twips2mm*m_mm_to_pix_y );
+          break;
+        case wxMM_POINTS:
+          SetLogicalScale( pt2mm*m_mm_to_pix_x, pt2mm*m_mm_to_pix_y );
+          break;
+        case wxMM_METRIC:
+          SetLogicalScale( m_mm_to_pix_x, m_mm_to_pix_y );
+          break;
+        case wxMM_LOMETRIC:
+          SetLogicalScale( m_mm_to_pix_x/10.0, m_mm_to_pix_y/10.0 );
+          break;
+        default:
+        case wxMM_TEXT:
+          SetLogicalScale( 1.0, 1.0 );
+          break;
+    }
+    m_mappingMode = mode;
+}
+
+void wxImplDC::SetUserScale( double x, double y )
+{
+    // allow negative ? -> no
+    m_userScaleX = x;
+    m_userScaleY = y;
+    ComputeScaleAndOrigin();
+}
+
+void wxImplDC::SetLogicalScale( double x, double y )
+{
+    // allow negative ?
+    m_logicalScaleX = x;
+    m_logicalScaleY = y;
+    ComputeScaleAndOrigin();
+}
+
+void wxImplDC::SetLogicalOrigin( wxCoord x, wxCoord y )
+{
+    m_logicalOriginX = x * m_signX;
+    m_logicalOriginY = y * m_signY;
+    ComputeScaleAndOrigin();
+}
+
+void wxImplDC::SetDeviceOrigin( wxCoord x, wxCoord y )
+{
+    m_deviceOriginX = x;
+    m_deviceOriginY = y;
+    ComputeScaleAndOrigin();
+}
+
+void wxImplDC::SetDeviceLocalOrigin( wxCoord x, wxCoord y )
+{
+    m_deviceLocalOriginX = x;
+    m_deviceLocalOriginY = y;
+    ComputeScaleAndOrigin();
+}
+
+void wxImplDC::SetAxisOrientation( bool xLeftRight, bool yBottomUp )
+{
+    // only wxPostScripDC has m_signX = -1, we override SetAxisOrientation there
+    m_signX = (xLeftRight ?  1 : -1);
+    m_signY = (yBottomUp  ? -1 :  1);
+    ComputeScaleAndOrigin();
+}
+
+
+// Each element of the widths array will be the width of the string up to and
+// including the corresponding character in text.  This is the generic
+// implementation, the port-specific classes should do this with native APIs
+// if available and if faster.  Note: pango_layout_index_to_pos is much slower
+// than calling GetTextExtent!!
+
+#define FWC_SIZE 256
+
+class FontWidthCache
+{
+public:
+    FontWidthCache() : m_scaleX(1), m_widths(NULL) { }
+    ~FontWidthCache() { delete []m_widths; }
+
+    void Reset()
+    {
+        if (!m_widths)
+            m_widths = new int[FWC_SIZE];
+
+        memset(m_widths, 0, sizeof(int)*FWC_SIZE);
+    }
+
+    wxFont m_font;
+    double m_scaleX;
+    int *m_widths;
+};
+
+static FontWidthCache s_fontWidthCache;
+
+bool wxImplDC::DoGetPartialTextExtents(const wxString& text, wxArrayInt& widths) const
+{
+    int totalWidth = 0;
+
+    const size_t len = text.length();
+    widths.Empty();
+    widths.Add(0, len);
+
+    // reset the cache if font or horizontal scale have changed
+    if ( !s_fontWidthCache.m_widths ||
+         !wxIsSameDouble(s_fontWidthCache.m_scaleX, m_scaleX) ||
+         (s_fontWidthCache.m_font != GetFont()) )
+    {
+        s_fontWidthCache.Reset();
+        s_fontWidthCache.m_font = GetFont();
+        s_fontWidthCache.m_scaleX = m_scaleX;
+    }
+
+    // Calculate the position of each character based on the widths of
+    // the previous characters
+    int w, h;
+    for ( size_t i = 0; i < len; i++ )
+    {
+        const wxChar c = text[i];
+        unsigned int c_int = (unsigned int)c;
+
+        if ((c_int < FWC_SIZE) && (s_fontWidthCache.m_widths[c_int] != 0))
+        {
+            w = s_fontWidthCache.m_widths[c_int];
+        }
+        else
+        {
+            GetTextExtent(c, &w, &h);
+            if (c_int < FWC_SIZE)
+                s_fontWidthCache.m_widths[c_int] = w;
+        }
+
+        totalWidth += w;
+        widths[i] = totalWidth;
+    }
+
+    return true;
+}
+
+void wxImplDC::GetMultiLineTextExtent(const wxString& text,
+                                      wxCoord *x,
+                                      wxCoord *y,
+                                      wxCoord *h,
+                                      const wxFont *font) const
+{
+    wxCoord widthTextMax = 0, widthLine,
+            heightTextTotal = 0, heightLineDefault = 0, heightLine = 0;
+
+    wxString curLine;
+    for ( const wxChar *pc = text; ; pc++ )
+    {
+        if ( *pc == _T('\n') || *pc == _T('\0') )
+        {
+            if ( curLine.empty() )
+            {
+                // we can't use GetTextExtent - it will return 0 for both width
+                // and height and an empty line should count in height
+                // calculation
+
+                // assume that this line has the same height as the previous
+                // one
+                if ( !heightLineDefault )
+                    heightLineDefault = heightLine;
+
+                if ( !heightLineDefault )
+                {
+                    // but we don't know it yet - choose something reasonable
+                    DoGetTextExtent(_T("W"), NULL, &heightLineDefault,
+                                  NULL, NULL, font);
+                }
+
+                heightTextTotal += heightLineDefault;
+            }
+            else
+            {
+                DoGetTextExtent(curLine, &widthLine, &heightLine,
+                              NULL, NULL, font);
+                if ( widthLine > widthTextMax )
+                    widthTextMax = widthLine;
+                heightTextTotal += heightLine;
+            }
+
+            if ( *pc == _T('\n') )
+            {
+               curLine.clear();
+            }
+            else
+            {
+               // the end of string
+               break;
+            }
+        }
+        else
+        {
+            curLine += *pc;
+        }
+    }
+
+    if ( x )
+        *x = widthTextMax;
+    if ( y )
+        *y = heightTextTotal;
+    if ( h )
+        *h = heightLine;
+}
+
+void wxImplDC::DoDrawCheckMark(wxCoord x1, wxCoord y1,
+                               wxCoord width, wxCoord height)
+{
+    wxCHECK_RET( Ok(), wxT("invalid window dc") );
+
+    wxCoord x2 = x1 + width,
+            y2 = y1 + height;
+
+    // the pen width is calibrated to give 3 for width == height == 10
+    wxDCPenChanger pen(m_owner, wxPen(GetTextForeground(), (width + height + 1)/7));
+
+    // we're drawing a scaled version of wx/generic/tick.xpm here
+    wxCoord x3 = x1 + (4*width) / 10,   // x of the tick bottom
+            y3 = y1 + height / 2;       // y of the left tick branch
+    DoDrawLine(x1, y3, x3, y2);
+    DoDrawLine(x3, y2, x2, y1);
+
+    CalcBoundingBox(x1, y1);
+    CalcBoundingBox(x2, y2);
+}
+
+bool
+wxImplDC::DoStretchBlit(wxCoord xdest, wxCoord ydest,
+                        wxCoord dstWidth, wxCoord dstHeight,
+                        wxDC *source,
+                        wxCoord xsrc, wxCoord ysrc,
+                        wxCoord srcWidth, wxCoord srcHeight,
+                        int rop,
+                        bool useMask,
+                        wxCoord xsrcMask,
+                        wxCoord ysrcMask)
+{
+    wxCHECK_MSG( srcWidth && srcHeight && dstWidth && dstHeight, false,
+                 _T("invalid blit size") );
+
+    // emulate the stretching by modifying the DC scale
+    double xscale = (double)srcWidth/dstWidth,
+           yscale = (double)srcHeight/dstHeight;
+
+    double xscaleOld, yscaleOld;
+    GetUserScale(&xscaleOld, &yscaleOld);
+    SetUserScale(xscaleOld/xscale, yscaleOld/yscale);
+
+    bool rc = DoBlit(wxCoord(xdest*xscale), wxCoord(ydest*yscale),
+                     wxCoord(dstWidth*xscale), wxCoord(dstHeight*yscale),
+                     source,
+                     xsrc, ysrc, rop, useMask, xsrcMask, ysrcMask);
+
+    SetUserScale(xscaleOld, yscaleOld);
+
+    return rc;
+}
+
+void wxImplDC::DrawLines(const wxList *list, wxCoord xoffset, wxCoord yoffset)
+{
+    int n = list->GetCount();
+    wxPoint *points = new wxPoint[n];
+
+    int i = 0;
+    for ( wxList::compatibility_iterator node = list->GetFirst(); node; node = node->GetNext(), i++ )
+    {
+        wxPoint *point = (wxPoint *)node->GetData();
+        points[i].x = point->x;
+        points[i].y = point->y;
+    }
+
+    DoDrawLines(n, points, xoffset, yoffset);
+
+    delete [] points;
+}
+
+void wxImplDC::DrawPolygon(const wxList *list,
+                           wxCoord xoffset, wxCoord yoffset,
+                           int fillStyle)
+{
+    int n = list->GetCount();
+    wxPoint *points = new wxPoint[n];
+
+    int i = 0;
+    for ( wxList::compatibility_iterator node = list->GetFirst(); node; node = node->GetNext(), i++ )
+    {
+        wxPoint *point = (wxPoint *)node->GetData();
+        points[i].x = point->x;
+        points[i].y = point->y;
+    }
+
+    DoDrawPolygon(n, points, xoffset, yoffset, fillStyle);
+
+    delete [] points;
+}
+
+void
+wxImplDC::DoDrawPolyPolygon(int n,
+                            int count[],
+                            wxPoint points[],
+                            wxCoord xoffset, wxCoord yoffset,
+                            int fillStyle)
+{
+    if ( n == 1 )
+    {
+        DoDrawPolygon(count[0], points, xoffset, yoffset, fillStyle);
+        return;
+    }
+
+    int      i, j, lastOfs;
+    wxPoint* pts;
+    wxPen    pen;
+
+    for (i = j = lastOfs = 0; i < n; i++)
+    {
+        lastOfs = j;
+        j      += count[i];
+    }
+    pts = new wxPoint[j+n-1];
+    for (i = 0; i < j; i++)
+        pts[i] = points[i];
+    for (i = 2; i <= n; i++)
+    {
+        lastOfs -= count[n-i];
+        pts[j++] = pts[lastOfs];
+    }
+
+    pen = GetPen();
+    SetPen(wxPen(*wxBLACK, 0, wxTRANSPARENT));
+    DoDrawPolygon(j, pts, xoffset, yoffset, fillStyle);
+    SetPen(pen);
+    for (i = j = 0; i < n; i++)
+    {
+        DoDrawLines(count[i], pts+j, xoffset, yoffset);
+        j += count[i];
+    }
+    delete[] pts;
+}
+
+#if wxUSE_SPLINES
+
+// TODO: this API needs fixing (wxPointList, why (!const) "wxList *"?)
+void wxImplDC::DrawSpline(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2, wxCoord x3, wxCoord y3)
+{
+    wxList point_list;
+
+    wxPoint *point1 = new wxPoint;
+    point1->x = x1; point1->y = y1;
+    point_list.Append((wxObject*)point1);
+
+    wxPoint *point2 = new wxPoint;
+    point2->x = x2; point2->y = y2;
+    point_list.Append((wxObject*)point2);
+
+    wxPoint *point3 = new wxPoint;
+    point3->x = x3; point3->y = y3;
+    point_list.Append((wxObject*)point3);
+
+    DrawSpline(&point_list);
+
+    for( wxList::compatibility_iterator node = point_list.GetFirst(); node; node = node->GetNext() )
+    {
+        wxPoint *p = (wxPoint *)node->GetData();
+        delete p;
+    }
+}
+
+void wxImplDC::DrawSpline(int n, wxPoint points[])
+{
+    wxList list;
+    for (int i =0; i < n; i++)
+    {
+        list.Append((wxObject*)&points[i]);
+    }
+
+    DrawSpline(&list);
+}
+
+// ----------------------------------- spline code ----------------------------------------
+
+void wx_quadratic_spline(double a1, double b1, double a2, double b2,
+                         double a3, double b3, double a4, double b4);
+void wx_clear_stack();
+int wx_spline_pop(double *x1, double *y1, double *x2, double *y2, double *x3,
+        double *y3, double *x4, double *y4);
+void wx_spline_push(double x1, double y1, double x2, double y2, double x3, double y3,
+          double x4, double y4);
+static bool wx_spline_add_point(double x, double y);
+static void wx_spline_draw_point_array(wxDCBase *dc);
+
+wxList wx_spline_point_list;
+
+#define                half(z1, z2)        ((z1+z2)/2.0)
+#define                THRESHOLD        5
+
+/* iterative version */
+
+void wx_quadratic_spline(double a1, double b1, double a2, double b2, double a3, double b3, double a4,
+                 double b4)
+{
+    register double  xmid, ymid;
+    double           x1, y1, x2, y2, x3, y3, x4, y4;
+
+    wx_clear_stack();
+    wx_spline_push(a1, b1, a2, b2, a3, b3, a4, b4);
+
+    while (wx_spline_pop(&x1, &y1, &x2, &y2, &x3, &y3, &x4, &y4)) {
+        xmid = (double)half(x2, x3);
+        ymid = (double)half(y2, y3);
+        if (fabs(x1 - xmid) < THRESHOLD && fabs(y1 - ymid) < THRESHOLD &&
+            fabs(xmid - x4) < THRESHOLD && fabs(ymid - y4) < THRESHOLD) {
+            wx_spline_add_point( x1, y1 );
+            wx_spline_add_point( xmid, ymid );
+        } else {
+            wx_spline_push(xmid, ymid, (double)half(xmid, x3), (double)half(ymid, y3),
+                 (double)half(x3, x4), (double)half(y3, y4), x4, y4);
+            wx_spline_push(x1, y1, (double)half(x1, x2), (double)half(y1, y2),
+                 (double)half(x2, xmid), (double)half(y2, ymid), xmid, ymid);
+        }
+    }
+}
+
+/* utilities used by spline drawing routines */
+
+typedef struct wx_spline_stack_struct {
+    double           x1, y1, x2, y2, x3, y3, x4, y4;
+} Stack;
+
+#define         SPLINE_STACK_DEPTH             20
+static Stack    wx_spline_stack[SPLINE_STACK_DEPTH];
+static Stack   *wx_stack_top;
+static int      wx_stack_count;
+
+void wx_clear_stack()
+{
+    wx_stack_top = wx_spline_stack;
+    wx_stack_count = 0;
+}
+
+void wx_spline_push(double x1, double y1, double x2, double y2, double x3, double y3, double x4, double y4)
+{
+    wx_stack_top->x1 = x1;
+    wx_stack_top->y1 = y1;
+    wx_stack_top->x2 = x2;
+    wx_stack_top->y2 = y2;
+    wx_stack_top->x3 = x3;
+    wx_stack_top->y3 = y3;
+    wx_stack_top->x4 = x4;
+    wx_stack_top->y4 = y4;
+    wx_stack_top++;
+    wx_stack_count++;
+}
+
+int wx_spline_pop(double *x1, double *y1, double *x2, double *y2,
+                  double *x3, double *y3, double *x4, double *y4)
+{
+    if (wx_stack_count == 0)
+        return (0);
+    wx_stack_top--;
+    wx_stack_count--;
+    *x1 = wx_stack_top->x1;
+    *y1 = wx_stack_top->y1;
+    *x2 = wx_stack_top->x2;
+    *y2 = wx_stack_top->y2;
+    *x3 = wx_stack_top->x3;
+    *y3 = wx_stack_top->y3;
+    *x4 = wx_stack_top->x4;
+    *y4 = wx_stack_top->y4;
+    return (1);
+}
+
+static bool wx_spline_add_point(double x, double y)
+{
+  wxPoint *point = new wxPoint ;
+  point->x = (int) x;
+  point->y = (int) y;
+  wx_spline_point_list.Append((wxObject*)point);
+  return true;
+}
+
+static void wx_spline_draw_point_array(wxDC *dc)
+{
+  dc->DrawLines(&wx_spline_point_list, 0, 0 );
+  wxList::compatibility_iterator node = wx_spline_point_list.GetFirst();
+  while (node)
+  {
+    wxPoint *point = (wxPoint *)node->GetData();
+    delete point;
+    wx_spline_point_list.Erase(node);
+    node = wx_spline_point_list.GetFirst();
+  }
+}
+
+void wxImplDC::DoDrawSpline( wxList *points )
+{
+    wxCHECK_RET( Ok(), wxT("invalid window dc") );
+
+    wxPoint *p;
+    double           cx1, cy1, cx2, cy2, cx3, cy3, cx4, cy4;
+    double           x1, y1, x2, y2;
+
+    wxList::compatibility_iterator node = points->GetFirst();
+    if (!node)
+        // empty list
+        return;
+
+    p = (wxPoint *)node->GetData();
+
+    x1 = p->x;
+    y1 = p->y;
+
+    node = node->GetNext();
+    p = (wxPoint *)node->GetData();
+
+    x2 = p->x;
+    y2 = p->y;
+    cx1 = (double)((x1 + x2) / 2);
+    cy1 = (double)((y1 + y2) / 2);
+    cx2 = (double)((cx1 + x2) / 2);
+    cy2 = (double)((cy1 + y2) / 2);
+
+    wx_spline_add_point(x1, y1);
+
+    while ((node = node->GetNext())
+#if !wxUSE_STL
+           != NULL
+#endif // !wxUSE_STL
+          )
+    {
+        p = (wxPoint *)node->GetData();
+        x1 = x2;
+        y1 = y2;
+        x2 = p->x;
+        y2 = p->y;
+        cx4 = (double)(x1 + x2) / 2;
+        cy4 = (double)(y1 + y2) / 2;
+        cx3 = (double)(x1 + cx4) / 2;
+        cy3 = (double)(y1 + cy4) / 2;
+
+        wx_quadratic_spline(cx1, cy1, cx2, cy2, cx3, cy3, cx4, cy4);
+
+        cx1 = cx4;
+        cy1 = cy4;
+        cx2 = (double)(cx1 + x2) / 2;
+        cy2 = (double)(cy1 + y2) / 2;
+    }
+
+    wx_spline_add_point( cx1, cy1 );
+    wx_spline_add_point( x2, y2 );
+
+    wx_spline_draw_point_array( m_owner );
+}
+
+#endif // wxUSE_SPLINES
+
+
+void wxImplDC::DrawLabel(const wxString& text,
+                         const wxBitmap& bitmap,
+                         const wxRect& rect,
+                         int alignment,
+                         int indexAccel,
+                         wxRect *rectBounding)
+{
+    // find the text position
+    wxCoord widthText, heightText, heightLine;
+    GetMultiLineTextExtent(text, &widthText, &heightText, &heightLine);
+
+    wxCoord width, height;
+    if ( bitmap.Ok() )
+    {
+        width = widthText + bitmap.GetWidth();
+        height = bitmap.GetHeight();
+    }
+    else // no bitmap
+    {
+        width = widthText;
+        height = heightText;
+    }
+
+    wxCoord x, y;
+    if ( alignment & wxALIGN_RIGHT )
+    {
+        x = rect.GetRight() - width;
+    }
+    else if ( alignment & wxALIGN_CENTRE_HORIZONTAL )
+    {
+        x = (rect.GetLeft() + rect.GetRight() + 1 - width) / 2;
+    }
+    else // alignment & wxALIGN_LEFT
+    {
+        x = rect.GetLeft();
+    }
+
+    if ( alignment & wxALIGN_BOTTOM )
+    {
+        y = rect.GetBottom() - height;
+    }
+    else if ( alignment & wxALIGN_CENTRE_VERTICAL )
+    {
+        y = (rect.GetTop() + rect.GetBottom() + 1 - height) / 2;
+    }
+    else // alignment & wxALIGN_TOP
+    {
+        y = rect.GetTop();
+    }
+
+    // draw the bitmap first
+    wxCoord x0 = x,
+            y0 = y,
+            width0 = width;
+    if ( bitmap.Ok() )
+    {
+        DoDrawBitmap(bitmap, x, y, true /* use mask */);
+
+        wxCoord offset = bitmap.GetWidth() + 4;
+        x += offset;
+        width -= offset;
+
+        y += (height - heightText) / 2;
+    }
+
+    // we will draw the underscore under the accel char later
+    wxCoord startUnderscore = 0,
+            endUnderscore = 0,
+            yUnderscore = 0;
+
+    // split the string into lines and draw each of them separately
+    wxString curLine;
+    for ( wxString::const_iterator pc = text.begin(); ; ++pc )
+    {
+        if ( *pc == _T('\n') || pc == text.end() )
+        {
+            int xRealStart = x; // init it here to avoid compielr warnings
+
+            if ( !curLine.empty() )
+            {
+                // NB: can't test for !(alignment & wxALIGN_LEFT) because
+                //     wxALIGN_LEFT is 0
+                if ( alignment & (wxALIGN_RIGHT | wxALIGN_CENTRE_HORIZONTAL) )
+                {
+                    wxCoord widthLine;
+                    m_owner->GetTextExtent(curLine, &widthLine, NULL);
+
+                    if ( alignment & wxALIGN_RIGHT )
+                    {
+                        xRealStart += width - widthLine;
+                    }
+                    else // if ( alignment & wxALIGN_CENTRE_HORIZONTAL )
+                    {
+                        xRealStart += (width - widthLine) / 2;
+                    }
+                }
+                //else: left aligned, nothing to do
+
+                DoDrawText(curLine, xRealStart, y);
+            }
+
+            y += heightLine;
+
+            // do we have underscore in this line? we can check yUnderscore
+            // because it is set below to just y + heightLine if we do
+            if ( y == yUnderscore )
+            {
+                // adjust the horz positions to account for the shift
+                startUnderscore += xRealStart;
+                endUnderscore += xRealStart;
+            }
+
+            if ( pc == text.end() )
+                break;
+
+            curLine.clear();
+        }
+        else // not end of line
+        {
+            if ( pc - text.begin() == indexAccel )
+            {
+                // remeber to draw underscore here
+                GetTextExtent(curLine, &startUnderscore, NULL);
+                curLine += *pc;
+                GetTextExtent(curLine, &endUnderscore, NULL);
+
+                yUnderscore = y + heightLine;
+            }
+            else
+            {
+                curLine += *pc;
+            }
+        }
+    }
+
+    // draw the underscore if found
+    if ( startUnderscore != endUnderscore )
+    {
+        // it should be of the same colour as text
+        SetPen(wxPen(GetTextForeground(), 0, wxSOLID));
+
+        yUnderscore--;
+
+        DoDrawLine(startUnderscore, yUnderscore, endUnderscore, yUnderscore);
+    }
+
+    // return bounding rect if requested
+    if ( rectBounding )
+    {
+        *rectBounding = wxRect(x, y - heightText, widthText, heightText);
+    }
+
+    CalcBoundingBox(x0, y0);
+    CalcBoundingBox(x0 + width0, y0 + height);
+}
+
+
+void wxImplDC::DoGradientFillLinear(const wxRect& rect,
+                                    const wxColour& initialColour,
+                                    const wxColour& destColour,
+                                    wxDirection nDirection)
+{
+    // save old pen
+    wxPen oldPen = m_pen;
+    wxBrush oldBrush = m_brush;
+
+    wxUint8 nR1 = initialColour.Red();
+    wxUint8 nG1 = initialColour.Green();
+    wxUint8 nB1 = initialColour.Blue();
+    wxUint8 nR2 = destColour.Red();
+    wxUint8 nG2 = destColour.Green();
+    wxUint8 nB2 = destColour.Blue();
+    wxUint8 nR, nG, nB;
+
+    if ( nDirection == wxEAST || nDirection == wxWEST )
+    {
+        wxInt32 x = rect.GetWidth();
+        wxInt32 w = x;              // width of area to shade
+        wxInt32 xDelta = w/256;     // height of one shade bend
+        if (xDelta < 1)
+            xDelta = 1;
+
+        while (x >= xDelta)
+        {
+            x -= xDelta;
+            if (nR1 > nR2)
+                nR = nR1 - (nR1-nR2)*(w-x)/w;
+            else
+                nR = nR1 + (nR2-nR1)*(w-x)/w;
+
+            if (nG1 > nG2)
+                nG = nG1 - (nG1-nG2)*(w-x)/w;
+            else
+                nG = nG1 + (nG2-nG1)*(w-x)/w;
+
+            if (nB1 > nB2)
+                nB = nB1 - (nB1-nB2)*(w-x)/w;
+            else
+                nB = nB1 + (nB2-nB1)*(w-x)/w;
+
+            wxColour colour(nR,nG,nB);
+            SetPen(wxPen(colour, 1, wxSOLID));
+            SetBrush(wxBrush(colour));
+            if(nDirection == wxEAST)
+                DoDrawRectangle(rect.GetRight()-x-xDelta, rect.GetTop(),
+                        xDelta, rect.GetHeight());
+            else //nDirection == wxWEST
+                DoDrawRectangle(rect.GetLeft()+x, rect.GetTop(),
+                        xDelta, rect.GetHeight());
+        }
+    }
+    else  // nDirection == wxNORTH || nDirection == wxSOUTH
+    {
+        wxInt32 y = rect.GetHeight();
+        wxInt32 w = y;              // height of area to shade
+        wxInt32 yDelta = w/255;     // height of one shade bend
+        if (yDelta < 1)
+            yDelta = 1;
+
+        while (y > 0)
+        {
+            y -= yDelta;
+            if (nR1 > nR2)
+                nR = nR1 - (nR1-nR2)*(w-y)/w;
+            else
+                nR = nR1 + (nR2-nR1)*(w-y)/w;
+
+            if (nG1 > nG2)
+                nG = nG1 - (nG1-nG2)*(w-y)/w;
+            else
+                nG = nG1 + (nG2-nG1)*(w-y)/w;
+
+            if (nB1 > nB2)
+                nB = nB1 - (nB1-nB2)*(w-y)/w;
+            else
+                nB = nB1 + (nB2-nB1)*(w-y)/w;
+
+            wxColour colour(nR,nG,nB);
+            SetPen(wxPen(colour, 1, wxSOLID));
+            SetBrush(wxBrush(colour));
+            if(nDirection == wxNORTH)
+                DoDrawRectangle(rect.GetLeft(), rect.GetTop()+y,
+                        rect.GetWidth(), yDelta);
+            else //nDirection == wxSOUTH
+                DoDrawRectangle(rect.GetLeft(), rect.GetBottom()-y-yDelta,
+                        rect.GetWidth(), yDelta);
+        }
+    }
+
+    SetPen(oldPen);
+    SetBrush(oldBrush);
+}
+
+void wxImplDC::DoGradientFillConcentric(const wxRect& rect,
+                                      const wxColour& initialColour,
+                                      const wxColour& destColour,
+                                      const wxPoint& circleCenter)
+{
+    //save the old pen color
+    wxColour oldPenColour = m_pen.GetColour();
+
+    wxUint8 nR1 = destColour.Red();
+    wxUint8 nG1 = destColour.Green();
+    wxUint8 nB1 = destColour.Blue();
+    wxUint8 nR2 = initialColour.Red();
+    wxUint8 nG2 = initialColour.Green();
+    wxUint8 nB2 = initialColour.Blue();
+    wxUint8 nR, nG, nB;
+
+
+    //Radius
+    wxInt32 cx = rect.GetWidth() / 2;
+    wxInt32 cy = rect.GetHeight() / 2;
+    wxInt32 nRadius;
+    if (cx < cy)
+        nRadius = cx;
+    else
+        nRadius = cy;
+
+    //Offset of circle
+    wxInt32 nCircleOffX = circleCenter.x - (rect.GetWidth() / 2);
+    wxInt32 nCircleOffY = circleCenter.y - (rect.GetHeight() / 2);
+
+    for ( wxInt32 x = 0; x < rect.GetWidth(); x++ )
+    {
+        for ( wxInt32 y = 0; y < rect.GetHeight(); y++ )
+        {
+            //get color difference
+            wxInt32 nGradient = ((nRadius -
+                                  (wxInt32)sqrt(
+                                    pow((double)(x - cx - nCircleOffX), 2) +
+                                    pow((double)(y - cy - nCircleOffY), 2)
+                                  )) * 100) / nRadius;
+
+            //normalize Gradient
+            if (nGradient < 0 )
+                nGradient = 0;
+
+            //get dest colors
+            nR = (wxUint8)(nR1 + ((nR2 - nR1) * nGradient / 100));
+            nG = (wxUint8)(nG1 + ((nG2 - nG1) * nGradient / 100));
+            nB = (wxUint8)(nB1 + ((nB2 - nB1) * nGradient / 100));
+
+            //set the pixel
+            m_pen.SetColour(wxColour(nR,nG,nB));
+            DoDrawPoint(wxPoint(x + rect.GetLeft(), y + rect.GetTop()));
+        }
+    }
+    //return old pen color
+    m_pen.SetColour(oldPenColour);
+}
+
+//-----------------------------------------------------------------------------
+// wxDC
+//-----------------------------------------------------------------------------
+
+IMPLEMENT_ABSTRACT_CLASS(wxDC, wxObject)
+
+#if WXWIN_COMPATIBILITY_2_8
+    // for compatibility with the old code when wxCoord was long everywhere
+void wxDC::GetTextExtent(const wxString& string,
+                       long *x, long *y,
+                       long *descent,
+                       long *externalLeading,
+                       const wxFont *theFont) const
+    {
+        wxCoord x2, y2, descent2, externalLeading2;
+        m_pimpl->DoGetTextExtent(string, &x2, &y2,
+                        &descent2, &externalLeading2,
+                        theFont);
+        if ( x )
+            *x = x2;
+        if ( y )
+            *y = y2;
+        if ( descent )
+            *descent = descent2;
+        if ( externalLeading )
+            *externalLeading = externalLeading2;
+    }
+
+void wxDC::GetLogicalOrigin(long *x, long *y) const 
+    {
+        wxCoord x2, y2;
+        m_pimpl->DoGetLogicalOrigin(&x2, &y2);
+        if ( x )
+            *x = x2;
+        if ( y )
+            *y = y2;
+    }
+
+void wxDC::GetDeviceOrigin(long *x, long *y) const 
+    {
+        wxCoord x2, y2;
+        m_pimpl->DoGetDeviceOrigin(&x2, &y2);
+        if ( x )
+            *x = x2;
+        if ( y )
+            *y = y2;
+    } 
+    
+void wxDC::GetClippingBox(long *x, long *y, long *w, long *h) const 
+    {
+        wxCoord xx,yy,ww,hh;
+        m_pimpl->DoGetClippingBox(&xx, &yy, &ww, &hh);
+        if (x) *x = xx;
+        if (y) *y = yy;
+        if (w) *w = ww;
+        if (h) *h = hh;
+    } 
+    
+#endif  // WXWIN_COMPATIBILITY_2_8
+
+
+#else  // wxUSE_NEW_DC
+
+
 // bool wxDCBase::sm_cacheing = false;
 
 IMPLEMENT_ABSTRACT_CLASS(wxDCBase, wxObject)
@@ -98,9 +1541,9 @@ void wxDCBase::EndDrawing()
     // for compatibility with the old code when wxCoord was long everywhere
 void wxDCBase::GetTextExtent(const wxString& string,
                        long *x, long *y,
-                       long *descent = NULL,
-                       long *externalLeading = NULL,
-                       const wxFont *theFont = NULL) const
+                       long *descent,
+                       long *externalLeading,
+                       const wxFont *theFont) const
     {
         wxCoord x2, y2, descent2, externalLeading2;
         DoGetTextExtent(string, &x2, &y2,
@@ -729,9 +2172,9 @@ void wxDCBase::GetMultiLineTextExtent(const wxString& text,
             heightTextTotal = 0, heightLineDefault = 0, heightLine = 0;
 
     wxString curLine;
-    for ( const wxChar *pc = text; ; pc++ )
+    for ( wxString::const_iterator pc = text.begin(); ; ++pc )
     {
-        if ( *pc == _T('\n') || *pc == _T('\0') )
+        if ( pc == text.end() || *pc == _T('\n') )
         {
             if ( curLine.empty() )
             {
@@ -762,14 +2205,13 @@ void wxDCBase::GetMultiLineTextExtent(const wxString& text,
                 heightTextTotal += heightLine;
             }
 
-            if ( *pc == _T('\n') )
+            if ( pc == text.end() )
             {
-               curLine.clear();
+               break;
             }
-            else
+            else // '\n'
             {
-               // the end of string
-               break;
+               curLine.clear();
             }
         }
         else
@@ -860,7 +2302,7 @@ void wxDCBase::DrawLabel(const wxString& text,
     wxString curLine;
     for ( wxString::const_iterator pc = text.begin(); ; ++pc )
     {
-        if ( *pc == _T('\n') || pc == text.end() )
+        if ( pc == text.end() || *pc == _T('\n') )
         {
             int xRealStart = x; // init it here to avoid compielr warnings
 
@@ -1409,3 +2851,5 @@ void wxDCBase::CalculateEllipticPoints( wxList* points,
 } // CalculateEllipticPoints
 
 #endif // __WXWINCE__
+
+#endif  // wxUSE_NEW_DC