applied patch 923858 (fixes crash in zlib streams)

[wxWidgets.git] / src / mac / carbon / dc.cpp

/////////////////////////////////////////////////////////////////////////////
// Name:        dc.cpp
// Purpose:     wxDC class
// Author:      Stefan Csomor
// Modified by:
// Created:     01/02/97
// RCS-ID:      $Id$
// Copyright:   (c) Stefan Csomor
// Licence:       wxWindows licence
/////////////////////////////////////////////////////////////////////////////

#ifdef __GNUG__
#pragma implementation "dc.h"
#endif

#include "wx/dc.h"
#include "wx/app.h"
#include "wx/mac/uma.h"
#include "wx/dcmemory.h"
#include "wx/dcprint.h"
#include "wx/region.h"
#include "wx/image.h"
#include "wx/log.h"

#if __MSL__ >= 0x6000
#include "math.h"
using namespace std ;
#endif

#include "wx/mac/private.h"
#include <ATSUnicode.h>
#include <TextCommon.h>
#include <TextEncodingConverter.h>
#include <FixMath.h>
#if !USE_SHARED_LIBRARY
IMPLEMENT_ABSTRACT_CLASS(wxDC, wxObject)
#endif

//-----------------------------------------------------------------------------
// constants
//-----------------------------------------------------------------------------

#define mm2inches        0.0393700787402
#define inches2mm        25.4
#define mm2twips        56.6929133859
#define twips2mm        0.0176388888889
#define mm2pt            2.83464566929
#define pt2mm            0.352777777778
#if !defined( __DARWIN__ ) || defined(__MWERKS__)
#ifndef M_PI
const double M_PI = 3.14159265358979 ;
#endif
#endif
const double RAD2DEG  = 180.0 / M_PI;
const short kEmulatedMode = -1 ;
const short kUnsupportedMode = -2 ;

extern TECObjectRef s_TECNativeCToUnicode ;

// set to 0 if problems arise
#define wxMAC_EXPERIMENTAL_DC 1

wxMacPortSetter::wxMacPortSetter( const wxDC* dc ) :
    m_ph( (GrafPtr) dc->m_macPort )
{
    wxASSERT( dc->Ok() ) ;
    m_dc = dc ;
    dc->MacSetupPort(&m_ph) ;
}
wxMacPortSetter::~wxMacPortSetter()
{
    m_dc->MacCleanupPort(&m_ph) ;
}

#if wxMAC_EXPERIMENTAL_DC
class wxMacFastPortSetter
{
public :
    wxMacFastPortSetter( const wxDC *dc ) 
    {
	    wxASSERT( dc->Ok() ) ;
	    GetPort( &m_oldPort ) ;
	    SetPort( (GrafPtr) dc->m_macPort ) ;
	    m_clipRgn = NewRgn() ;
	    GetClip( m_clipRgn ) ;
	    m_dc = dc ;
	    dc->MacSetupPort( NULL ) ;
    }
    ~wxMacFastPortSetter()
    {
        SetPort( (GrafPtr) m_dc->m_macPort ) ;
        SetClip( m_clipRgn ) ;
	    SetPort( m_oldPort ) ;
	    m_dc->MacCleanupPort( NULL ) ;
	    DisposeRgn( m_clipRgn ) ;
    }
private :
    RgnHandle m_clipRgn ;
    GrafPtr m_oldPort ;
    const wxDC*   m_dc ;
} ;

#else
typedef wxMacPortSetter wxMacFastPortSetter ;
#endif

wxMacWindowClipper::wxMacWindowClipper( const wxWindow* win ) :
    wxMacPortSaver( (GrafPtr) GetWindowPort((WindowRef) win->MacGetTopLevelWindowRef()) )
{
    m_newPort =(GrafPtr) GetWindowPort((WindowRef) win->MacGetTopLevelWindowRef()) ;
    m_formerClip = NewRgn() ;
    m_newClip = NewRgn() ;
    GetClip( m_formerClip ) ;
    
    if ( win )
    {
        int x = 0 , y = 0;
        win->MacWindowToRootWindow( &x,&y ) ;
        // get area including focus rect
        CopyRgn( (RgnHandle) ((wxWindow*)win)->MacGetVisibleRegion(true).GetWXHRGN() , m_newClip ) ;
        if ( !EmptyRgn( m_newClip ) )
            OffsetRgn( m_newClip , x , y ) ;

        SetClip( m_newClip ) ;
    }
}

wxMacWindowClipper::~wxMacWindowClipper() 
{
    SetPort( m_newPort ) ;
    SetClip( m_formerClip ) ;
    DisposeRgn( m_newClip ) ;
    DisposeRgn( m_formerClip ) ;
}

wxMacWindowStateSaver::wxMacWindowStateSaver( const wxWindow* win ) :
    wxMacWindowClipper( win )
{
    // the port is already set at this point
    m_newPort =(GrafPtr) GetWindowPort((WindowRef) win->MacGetTopLevelWindowRef()) ;
    GetThemeDrawingState( &m_themeDrawingState ) ;
}

wxMacWindowStateSaver::~wxMacWindowStateSaver() 
{
    SetPort( m_newPort ) ;
    SetThemeDrawingState( m_themeDrawingState , true ) ;
}

//-----------------------------------------------------------------------------
// Local functions
//-----------------------------------------------------------------------------
static inline double dmin(double a, double b) { return a < b ? a : b; }
static inline double dmax(double a, double b) { return a > b ? a : b; }
static inline double DegToRad(double deg) { return (deg * M_PI) / 180.0; }

//-----------------------------------------------------------------------------
// wxDC
//-----------------------------------------------------------------------------
// this function emulates all wx colour manipulations, used to verify the implementation
// by setting the mode in the blitting functions to kEmulatedMode
void wxMacCalculateColour( int logical_func , const RGBColor &srcColor , RGBColor &dstColor ) ;

void wxMacCalculateColour( int logical_func , const RGBColor &srcColor , RGBColor &dstColor )
{
    switch ( logical_func )
    {
        case wxAND:        // src AND dst
            dstColor.red = dstColor.red & srcColor.red ;
            dstColor.green = dstColor.green & srcColor.green ;
            dstColor.blue = dstColor.blue & srcColor.blue ;
            break ;
        case wxAND_INVERT: // (NOT src) AND dst
            dstColor.red = dstColor.red & ~srcColor.red ;
            dstColor.green = dstColor.green & ~srcColor.green ;
            dstColor.blue = dstColor.blue & ~srcColor.blue ;
            break ;
        case wxAND_REVERSE:// src AND (NOT dst)
            dstColor.red = ~dstColor.red & srcColor.red ;
            dstColor.green = ~dstColor.green & srcColor.green ;
            dstColor.blue = ~dstColor.blue & srcColor.blue ;
            break ;
        case wxCLEAR:      // 0
            dstColor.red = 0 ;
            dstColor.green = 0 ;
            dstColor.blue = 0 ;
            break ;
        case wxCOPY:       // src
            dstColor.red = srcColor.red ;
            dstColor.green = srcColor.green ;
            dstColor.blue = srcColor.blue ;
            break ;
        case wxEQUIV:      // (NOT src) XOR dst
            dstColor.red = dstColor.red ^ ~srcColor.red ;
            dstColor.green = dstColor.green ^ ~srcColor.green ;
            dstColor.blue = dstColor.blue ^ ~srcColor.blue ;
            break ;
        case wxINVERT:     // NOT dst
            dstColor.red = ~dstColor.red ;
            dstColor.green = ~dstColor.green ;
            dstColor.blue = ~dstColor.blue ;
            break ;
        case wxNAND:       // (NOT src) OR (NOT dst)
            dstColor.red = ~dstColor.red | ~srcColor.red ;
            dstColor.green = ~dstColor.green | ~srcColor.green ;
            dstColor.blue = ~dstColor.blue | ~srcColor.blue ;
            break ;
        case wxNOR:        // (NOT src) AND (NOT dst)
            dstColor.red = ~dstColor.red & ~srcColor.red ;
            dstColor.green = ~dstColor.green & ~srcColor.green ;
            dstColor.blue = ~dstColor.blue & ~srcColor.blue ;
            break ;
        case wxNO_OP:      // dst
            break ;
        case wxOR:         // src OR dst
            dstColor.red = dstColor.red | srcColor.red ;
            dstColor.green = dstColor.green | srcColor.green ;
            dstColor.blue = dstColor.blue | srcColor.blue ;
            break ;
        case wxOR_INVERT:  // (NOT src) OR dst
            dstColor.red = dstColor.red | ~srcColor.red ;
            dstColor.green = dstColor.green | ~srcColor.green ;
            dstColor.blue = dstColor.blue | ~srcColor.blue ;
            break ;
        case wxOR_REVERSE: // src OR (NOT dst)
            dstColor.red = ~dstColor.red | srcColor.red ;
            dstColor.green = ~dstColor.green | srcColor.green ;
            dstColor.blue = ~dstColor.blue | srcColor.blue ;
            break ;
        case wxSET:        // 1
            dstColor.red = 0xFFFF ;
            dstColor.green = 0xFFFF ;
            dstColor.blue = 0xFFFF ;
            break ;
        case wxSRC_INVERT: // (NOT src)
            dstColor.red = ~srcColor.red ;
            dstColor.green = ~srcColor.green ;
            dstColor.blue = ~srcColor.blue ;
            break ;
        case wxXOR:        // src XOR dst
            dstColor.red = dstColor.red ^ srcColor.red ;
            dstColor.green = dstColor.green ^ srcColor.green ;
            dstColor.blue = dstColor.blue ^ srcColor.blue ;
            break ;
    }
}

wxDC::wxDC()
{
    m_ok = FALSE;
    m_colour = TRUE;
    m_mm_to_pix_x = mm2pt;
    m_mm_to_pix_y = mm2pt;
    m_internalDeviceOriginX = 0;
    m_internalDeviceOriginY = 0;
    m_externalDeviceOriginX = 0;
    m_externalDeviceOriginY = 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_needComputeScaleX = FALSE;
    m_needComputeScaleY = FALSE;
    m_macPort = NULL ;
    m_macMask = NULL ;
    m_ok = FALSE ;
    m_macFontInstalled = false ;
    m_macBrushInstalled = false ;
    m_macPenInstalled = false ;
    m_macLocalOrigin.x = m_macLocalOrigin.y = 0 ;
    m_macBoundaryClipRgn = NewRgn() ;
    m_macCurrentClipRgn = NewRgn() ;
    SetRectRgn( (RgnHandle) m_macBoundaryClipRgn , -32000 , -32000 , 32000 , 32000 ) ;
    SetRectRgn( (RgnHandle) m_macCurrentClipRgn , -32000 , -32000 , 32000 , 32000 ) ;
    m_pen = *wxBLACK_PEN;
    m_font = *wxNORMAL_FONT;
    m_brush = *wxWHITE_BRUSH;
#ifdef __WXDEBUG__
    // needed to debug possible errors with two active drawing methods at the same time on 
    // the same DC
    m_macCurrentPortStateHelper = NULL ;
#endif
    m_macATSUIStyle = NULL ;
    m_macAliasWasEnabled = false;
    m_macForegroundPixMap = NULL ;
    m_macBackgroundPixMap = NULL ;
}

wxDC::~wxDC(void)
{
    DisposeRgn( (RgnHandle) m_macBoundaryClipRgn ) ;
    DisposeRgn( (RgnHandle) m_macCurrentClipRgn ) ;
}

void wxDC::MacSetupPort(wxMacPortStateHelper* help) const
{
#ifdef __WXDEBUG__
    wxASSERT( m_macCurrentPortStateHelper == NULL ) ;
    m_macCurrentPortStateHelper = help ;
#endif
    SetClip( (RgnHandle) m_macCurrentClipRgn);
#if ! wxMAC_EXPERIMENTAL_DC
    m_macFontInstalled = false ;
    m_macBrushInstalled = false ;
    m_macPenInstalled = false ;
#endif
}
void wxDC::MacCleanupPort(wxMacPortStateHelper* help) const
{
#ifdef __WXDEBUG__
    wxASSERT( m_macCurrentPortStateHelper == help ) ;
    m_macCurrentPortStateHelper = NULL ;
#endif
    if( m_macATSUIStyle )
    {
        ::ATSUDisposeStyle((ATSUStyle)m_macATSUIStyle);
        m_macATSUIStyle = NULL ;
    }
    if ( m_macAliasWasEnabled )
    {
        SetAntiAliasedTextEnabled(m_macFormerAliasState, m_macFormerAliasSize);
        m_macAliasWasEnabled = false ;
    }
    if ( m_macForegroundPixMap )
    {
        Pattern blackColor ;
        ::PenPat(GetQDGlobalsBlack(&blackColor));
        DisposePixPat( (PixPatHandle) m_macForegroundPixMap ) ;
        m_macForegroundPixMap = NULL ;
    }
    if ( m_macBackgroundPixMap )
    {
        Pattern whiteColor ;
        ::BackPat(GetQDGlobalsWhite(&whiteColor));
        DisposePixPat( (PixPatHandle) m_macBackgroundPixMap ) ;
        m_macBackgroundPixMap = NULL ;
    }
}

void wxDC::DoDrawBitmap( const wxBitmap &bmp, wxCoord x, wxCoord y, bool useMask )
{
     wxCHECK_RET( Ok(), wxT("invalid window dc") );
     wxCHECK_RET( bmp.Ok(), wxT("invalid bitmap") );
     wxMacFastPortSetter helper(this) ;
     wxCoord xx = XLOG2DEVMAC(x);
     wxCoord yy = YLOG2DEVMAC(y);
     wxCoord w = bmp.GetWidth();
     wxCoord h = bmp.GetHeight();
     wxCoord ww = XLOG2DEVREL(w);
     wxCoord hh = YLOG2DEVREL(h);
     // Set up drawing mode
     short  mode = (m_logicalFunction == wxCOPY ? srcCopy :
                    //m_logicalFunction == wxCLEAR ? WHITENESS :
                    //m_logicalFunction == wxSET ? BLACKNESS :
                    m_logicalFunction == wxINVERT ? hilite :
                   //m_logicalFunction == wxAND ? MERGECOPY :
                    m_logicalFunction == wxOR ? srcOr :
                    m_logicalFunction == wxSRC_INVERT ? notSrcCopy :
                    m_logicalFunction == wxXOR ? srcXor :
                    m_logicalFunction == wxOR_REVERSE ? notSrcOr :
                    //m_logicalFunction == wxAND_REVERSE ? SRCERASE :
                    //m_logicalFunction == wxSRC_OR ? srcOr :
                    //m_logicalFunction == wxSRC_AND ? SRCAND :
                    srcCopy );
     if ( bmp.GetBitmapType() == kMacBitmapTypePict ) {
         Rect bitmaprect = { 0 , 0 , hh, ww };
         ::OffsetRect( &bitmaprect, xx, yy ) ;
         ::DrawPicture( (PicHandle) bmp.GetPict(), &bitmaprect ) ;
    }
     else if ( bmp.GetBitmapType() == kMacBitmapTypeGrafWorld )
     {
         GWorldPtr    bmapworld = MAC_WXHBITMAP( bmp.GetHBITMAP() );
         PixMapHandle bmappixels ;
         // Set foreground and background colours (for bitmaps depth = 1)
         if(bmp.GetDepth() == 1)
        {
             RGBColor fore = MAC_WXCOLORREF(m_textForegroundColour.GetPixel());
             RGBColor back = MAC_WXCOLORREF(m_textBackgroundColour.GetPixel());
             RGBForeColor(&fore);
             RGBBackColor(&back);
         }
         else
         {
             RGBColor white = { 0xFFFF, 0xFFFF,0xFFFF} ;
             RGBColor black = { 0,0,0} ;
             RGBForeColor( &black ) ;
             RGBBackColor( &white ) ;
         }
         bmappixels = GetGWorldPixMap( bmapworld ) ;
         wxCHECK_RET(LockPixels(bmappixels),
                     wxT("DoDrawBitmap:  Unable to lock pixels"));
         Rect source = { 0, 0, h, w };
         Rect dest   = { yy, xx, yy + hh, xx + ww };
         if ( useMask && bmp.GetMask() )
         {
             if( LockPixels(GetGWorldPixMap(MAC_WXHBITMAP(bmp.GetMask()->GetMaskBitmap()))))
             {
                 CopyDeepMask
                     (
                      GetPortBitMapForCopyBits(bmapworld),
                      GetPortBitMapForCopyBits(MAC_WXHBITMAP(bmp.GetMask()->GetMaskBitmap())),
                      GetPortBitMapForCopyBits( MAC_WXHBITMAP(m_macPort) ),
                      &source, &source, &dest, mode, NULL
                      );
                 UnlockPixels(GetGWorldPixMap(MAC_WXHBITMAP(bmp.GetMask()->GetMaskBitmap())));
             }
         }
         else {
             CopyBits( GetPortBitMapForCopyBits( bmapworld ),
                       GetPortBitMapForCopyBits( MAC_WXHBITMAP(m_macPort) ),
                       &source, &dest, mode, NULL ) ;
         }
         UnlockPixels( bmappixels ) ;
     }
     else if ( bmp.GetBitmapType() == kMacBitmapTypeIcon )
     {
        Rect bitmaprect = { 0 , 0 , bmp.GetHeight(), bmp.GetWidth() } ;
        OffsetRect( &bitmaprect, xx, yy ) ;
        PlotCIconHandle( &bitmaprect , atNone , ttNone , MAC_WXHICON(bmp.GetHICON()) ) ;
     }
     m_macPenInstalled = false ;
     m_macBrushInstalled = false ;
     m_macFontInstalled = false ;
}

void wxDC::DoDrawIcon( const wxIcon &icon, wxCoord x, wxCoord y )
{
    wxCHECK_RET(Ok(), wxT("Invalid dc  wxDC::DoDrawIcon"));
    wxCHECK_RET(icon.Ok(), wxT("Invalid icon wxDC::DoDrawIcon"));
    DoDrawBitmap( icon , x , y , icon.GetMask() != NULL ) ;
}

void wxDC::DoSetClippingRegion( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
{
    wxCHECK_RET(Ok(), wxT("wxDC::DoSetClippingRegion  Invalid DC"));
    wxCoord xx, yy, ww, hh;
    xx = XLOG2DEVMAC(x);
    yy = YLOG2DEVMAC(y);
    ww = XLOG2DEVREL(width);
    hh = YLOG2DEVREL(height);
    SetRectRgn( (RgnHandle) m_macCurrentClipRgn , xx , yy , xx + ww , yy + hh ) ;
    SectRgn( (RgnHandle) m_macCurrentClipRgn , (RgnHandle) m_macBoundaryClipRgn , (RgnHandle) m_macCurrentClipRgn ) ;
    if( m_clipping )
    {
        m_clipX1 = wxMax( m_clipX1 , xx );
        m_clipY1 = wxMax( m_clipY1 , yy );
        m_clipX2 = wxMin( m_clipX2, (xx + ww));
        m_clipY2 = wxMin( m_clipY2, (yy + hh));
    }
    else
    {
        m_clipping = TRUE;
        m_clipX1 = xx;
        m_clipY1 = yy;
        m_clipX2 = xx + ww;
        m_clipY2 = yy + hh;
    }
}

void wxDC::DoSetClippingRegionAsRegion( const wxRegion &region  )
{
    wxCHECK_RET( Ok(), wxT("invalid window dc") ) ;
    if (region.Empty())
    {
        DestroyClippingRegion();
        return;
    }
    wxMacFastPortSetter helper(this) ;
    wxCoord x, y, w, h;
    region.GetBox( x, y, w, h );
    wxCoord xx, yy, ww, hh;
    xx = XLOG2DEVMAC(x);
    yy = YLOG2DEVMAC(y);
    ww = XLOG2DEVREL(w);
    hh = YLOG2DEVREL(h);
    // if we have a scaling that we cannot map onto native regions
    // we must use the box
    if ( ww != w || hh != h )
    {
        wxDC::DoSetClippingRegion( x, y, w, h );
    }
    else
    {
        CopyRgn( (RgnHandle) region.GetWXHRGN() , (RgnHandle) m_macCurrentClipRgn ) ;
        if ( xx != x || yy != y )
        {
            OffsetRgn( (RgnHandle) m_macCurrentClipRgn , xx - x , yy - y ) ;
        }
        SectRgn( (RgnHandle) m_macCurrentClipRgn , (RgnHandle) m_macBoundaryClipRgn , (RgnHandle) m_macCurrentClipRgn ) ;
        if( m_clipping )
        {
            m_clipX1 = wxMax( m_clipX1 , xx );
            m_clipY1 = wxMax( m_clipY1 , yy );
            m_clipX2 = wxMin( m_clipX2, (xx + ww));
            m_clipY2 = wxMin( m_clipY2, (yy + hh));
        }
        else
        {
            m_clipping = TRUE;
            m_clipX1 = xx;
            m_clipY1 = yy;
            m_clipX2 = xx + ww;
            m_clipY2 = yy + hh;
        }
    }
}

void wxDC::DestroyClippingRegion()
{
    wxMacFastPortSetter helper(this) ;
    CopyRgn( (RgnHandle) m_macBoundaryClipRgn , (RgnHandle) m_macCurrentClipRgn ) ;
    m_clipping = FALSE;
}

void wxDC::DoGetSizeMM( int* width, int* height ) const
{
    int w = 0;
    int h = 0;
    GetSize( &w, &h );
    *width = long( double(w) / (m_scaleX*m_mm_to_pix_x) );
    *height = long( double(h) / (m_scaleY*m_mm_to_pix_y) );
}

void wxDC::SetTextForeground( const wxColour &col )
{
    wxCHECK_RET(Ok(), wxT("Invalid DC"));
    m_textForegroundColour = col;
    m_macFontInstalled = false ;
}

void wxDC::SetTextBackground( const wxColour &col )
{
    wxCHECK_RET(Ok(), wxT("Invalid DC"));
    m_textBackgroundColour = col;
    m_macFontInstalled = false ;
}

void wxDC::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;
    }
    if (mode != wxMM_TEXT)
    {
        m_needComputeScaleX = TRUE;
        m_needComputeScaleY = TRUE;
    }
}

void wxDC::SetUserScale( double x, double y )
{
    // allow negative ? -> no
    m_userScaleX = x;
    m_userScaleY = y;
    ComputeScaleAndOrigin();
}

void wxDC::SetLogicalScale( double x, double y )
{
    // allow negative ?
    m_logicalScaleX = x;
    m_logicalScaleY = y;
    ComputeScaleAndOrigin();
}

void wxDC::SetLogicalOrigin( wxCoord x, wxCoord y )
{
    m_logicalOriginX = x * m_signX;   // is this still correct ?
    m_logicalOriginY = y * m_signY;
    ComputeScaleAndOrigin();
}

void wxDC::SetDeviceOrigin( wxCoord x, wxCoord y )
{
    m_externalDeviceOriginX = x;
    m_externalDeviceOriginY = y;
    ComputeScaleAndOrigin();
}

void wxDC::SetAxisOrientation( bool xLeftRight, bool yBottomUp )
{
    m_signX = (xLeftRight ?  1 : -1);
    m_signY = (yBottomUp  ? -1 :  1);
    ComputeScaleAndOrigin();
}

wxSize wxDC::GetPPI() const
{
    return wxSize(72, 72);
}

int wxDC::GetDepth() const
{
    if ( IsPortColor( (CGrafPtr) m_macPort ) )
    {
        return ( (**GetPortPixMap( (CGrafPtr) m_macPort)).pixelSize ) ;
    }
    return 1 ;
}

void wxDC::ComputeScaleAndOrigin()
{
    // CMB: copy scale to see if it changes
    double origScaleX = m_scaleX;
    double origScaleY = m_scaleY;
    m_scaleX = m_logicalScaleX * m_userScaleX;
    m_scaleY = m_logicalScaleY * m_userScaleY;
    m_deviceOriginX = m_internalDeviceOriginX + m_externalDeviceOriginX;
    m_deviceOriginY = m_internalDeviceOriginY + m_externalDeviceOriginY;
    // CMB: if scale has changed call SetPen to recalulate the line width
    if (m_scaleX != origScaleX || m_scaleY != origScaleY)
    {
        // this is a bit artificial, but we need to force wxDC to think
        // the pen has changed
        wxPen* pen = & GetPen();
        wxPen tempPen;
        m_pen = tempPen;
        SetPen(* pen);
    }
}

void  wxDC::SetPalette( const wxPalette& palette )
{
}

void  wxDC::SetBackgroundMode( int mode )
{
    m_backgroundMode = mode ;
}

void  wxDC::SetFont( const wxFont &font )
{
    m_font = font;
    m_macFontInstalled = false ;
}

void  wxDC::SetPen( const wxPen &pen )
{
    if ( m_pen == pen )
        return ;
    m_pen = pen;
    m_macPenInstalled = false ;
}

void  wxDC::SetBrush( const wxBrush &brush )
{
    if (m_brush == brush)
        return;
    m_brush = brush;
    m_macBrushInstalled = false ;
}

void  wxDC::SetBackground( const wxBrush &brush )
{
    if (m_backgroundBrush == brush)
        return;
    m_backgroundBrush = brush;
    if (!m_backgroundBrush.Ok())
        return;
    m_macBrushInstalled = false ;
}

void  wxDC::SetLogicalFunction( int function )
{
    if (m_logicalFunction == function)
        return;
    m_logicalFunction = function ;
    m_macFontInstalled = false ;
    m_macBrushInstalled = false ;
    m_macPenInstalled = false ;
}

extern bool wxDoFloodFill(wxDC *dc, wxCoord x, wxCoord y,
                          const wxColour & col, int style);

bool wxDC::DoFloodFill(wxCoord x, wxCoord y,
                       const wxColour& col, int style)
{
    return wxDoFloodFill(this, x, y, col, style);
}

bool  wxDC::DoGetPixel( wxCoord x, wxCoord y, wxColour *col ) const
{
    wxCHECK_MSG( Ok(), false, wxT("wxDC::DoGetPixel  Invalid DC") );
    wxMacFastPortSetter helper(this) ;
    RGBColor colour;
    GetCPixel( XLOG2DEVMAC(x), YLOG2DEVMAC(y), &colour );
    // Convert from Mac colour to wx
    col->Set( colour.red   >> 8,
        colour.green >> 8,
        colour.blue  >> 8);
    return true ;
}

void  wxDC::DoDrawLine( wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2 )
{
    wxCHECK_RET(Ok(), wxT("Invalid DC"));
    wxMacFastPortSetter helper(this) ;
    if (m_pen.GetStyle() != wxTRANSPARENT)
    {
        MacInstallPen() ;
        wxCoord offset = ( (m_pen.GetWidth() == 0 ? 1 :
        m_pen.GetWidth() ) * (wxCoord)m_scaleX - 1) / 2;
        wxCoord xx1 = XLOG2DEVMAC(x1) - offset;
        wxCoord yy1 = YLOG2DEVMAC(y1) - offset;
        wxCoord xx2 = XLOG2DEVMAC(x2) - offset;
        wxCoord yy2 = YLOG2DEVMAC(y2) - offset;
        if ((m_pen.GetCap() == wxCAP_ROUND) &&
            (m_pen.GetWidth() <= 1))
        {
            // Implement LAST_NOT for MAC at least for
            // orthogonal lines. RR.
            if (xx1 == xx2)
            {
                if (yy1 < yy2)
                    yy2--;
                if (yy1 > yy2)
                    yy2++;
            }
            if (yy1 == yy2)
            {
                if (xx1 < xx2)
                    xx2--;
                if (xx1 > xx2)
                    xx2++;
            }
        }
        ::MoveTo(xx1, yy1);
        ::LineTo(xx2, yy2);
    }
}

void  wxDC::DoCrossHair( wxCoord x, wxCoord y )
{
    wxCHECK_RET( Ok(), wxT("wxDC::DoCrossHair  Invalid window dc") );
    wxMacFastPortSetter helper(this) ;
    if (m_pen.GetStyle() != wxTRANSPARENT)
    {
        int w = 0;
        int h = 0;
        GetSize( &w, &h );
        wxCoord xx = XLOG2DEVMAC(x);
        wxCoord yy = YLOG2DEVMAC(y);
        MacInstallPen();
        ::MoveTo( XLOG2DEVMAC(0), yy );
        ::LineTo( XLOG2DEVMAC(w), yy );
        ::MoveTo( xx, YLOG2DEVMAC(0) );
        ::LineTo( xx, YLOG2DEVMAC(h) );
        CalcBoundingBox(x, y);
        CalcBoundingBox(x+w, y+h);
    }
}

/*
* To draw arcs properly the angles need to be converted from the WX style:
* Angles start on the +ve X axis and go anti-clockwise (As you would draw on
* a normal axis on paper).
* TO
* the Mac style:
* Angles start on the +ve y axis and go clockwise.
*/

static double wxConvertWXangleToMACangle(double angle)
{
    double newAngle = 90 - angle ;
    if ( newAngle < 0 )
        newAngle += 360 ;
    return newAngle ;
}

void  wxDC::DoDrawArc( wxCoord x1, wxCoord y1,
                      wxCoord x2, wxCoord y2,
                      wxCoord xc, wxCoord yc )
{
    wxCHECK_RET(Ok(), wxT("wxDC::DoDrawArc  Invalid DC"));
    wxMacFastPortSetter helper(this) ;
    wxCoord xx1 = XLOG2DEVMAC(x1);
    wxCoord yy1 = YLOG2DEVMAC(y1);
    wxCoord xx2 = XLOG2DEVMAC(x2);
    wxCoord yy2 = YLOG2DEVMAC(y2);
    wxCoord xxc = XLOG2DEVMAC(xc);
    wxCoord yyc = YLOG2DEVMAC(yc);
    double dx = xx1 - xxc;
    double dy = yy1 - yyc;
    double radius = sqrt((double)(dx*dx+dy*dy));
    wxCoord rad   = (wxCoord)radius;
    double radius1, radius2;
    if (xx1 == xx2 && yy1 == yy2)
    {
        radius1 = 0.0;
        radius2 = 360.0;
    }
    else if (radius == 0.0)
    {
        radius1 = radius2 = 0.0;
    }
    else
    {
        radius1 = (xx1 - xxc == 0) ?
            (yy1 - yyc < 0) ? 90.0 : -90.0 :
        -atan2(double(yy1-yyc), double(xx1-xxc)) * RAD2DEG;
        radius2 = (xx2 - xxc == 0) ?
            (yy2 - yyc < 0) ? 90.0 : -90.0 :
        -atan2(double(yy2-yyc), double(xx2-xxc)) * RAD2DEG;
    }
    wxCoord alpha2 = wxCoord(radius2 - radius1);
    wxCoord alpha1 = wxCoord(wxConvertWXangleToMACangle(radius1));
    if( (xx1 > xx2) || (yy1 > yy2) ) {
        alpha2 *= -1;
    }
    Rect r = { yyc - rad, xxc - rad, yyc + rad, xxc + rad };
    if(m_brush.GetStyle() != wxTRANSPARENT) {
        MacInstallBrush();
        PaintArc(&r, alpha1, alpha2);
    }
    if(m_pen.GetStyle() != wxTRANSPARENT) {
        MacInstallPen();
        FrameArc(&r, alpha1, alpha2);
    }
}

void  wxDC::DoDrawEllipticArc( wxCoord x, wxCoord y, wxCoord w, wxCoord h,
                              double sa, double ea )
{
    wxCHECK_RET(Ok(), wxT("wxDC::DoDrawEllepticArc  Invalid DC"));
    wxMacFastPortSetter helper(this) ;
    Rect r;
    double angle = sa - ea;  // Order important Mac in opposite direction to wx
    // we have to make sure that the filling is always counter-clockwise
    if ( angle > 0 )
        angle -= 360 ;
    wxCoord xx = XLOG2DEVMAC(x);
    wxCoord yy = YLOG2DEVMAC(y);
    wxCoord ww = m_signX * XLOG2DEVREL(w);
    wxCoord hh = m_signY * YLOG2DEVREL(h);
    // handle -ve width and/or height
    if (ww < 0) { ww = -ww; xx = xx - ww; }
    if (hh < 0) { hh = -hh; yy = yy - hh; }
    sa = wxConvertWXangleToMACangle(sa);
    r.top    = yy;
    r.left   = xx;
    r.bottom = yy + hh;
    r.right  = xx + ww;
    if(m_brush.GetStyle() != wxTRANSPARENT) {
        MacInstallBrush();
        PaintArc(&r, (short)sa, (short)angle);
    }
    if(m_pen.GetStyle() != wxTRANSPARENT) {
        MacInstallPen();
        FrameArc(&r, (short)sa, (short)angle);
    }
}

void  wxDC::DoDrawPoint( wxCoord x, wxCoord y )
{
    wxCHECK_RET(Ok(), wxT("Invalid DC"));
    wxMacFastPortSetter helper(this) ;
    if (m_pen.GetStyle() != wxTRANSPARENT)
    {
        wxCoord xx1 = XLOG2DEVMAC(x);
        wxCoord yy1 = YLOG2DEVMAC(y);
        RGBColor pencolor = MAC_WXCOLORREF( m_pen.GetColour().GetPixel());
        ::SetCPixel( xx1,yy1,&pencolor) ;
        CalcBoundingBox(x, y);
    }
}

void  wxDC::DoDrawLines(int n, wxPoint points[],
                        wxCoord xoffset, wxCoord yoffset)
{
    wxCHECK_RET(Ok(), wxT("Invalid DC"));
    wxMacFastPortSetter helper(this) ;
    if (m_pen.GetStyle() == wxTRANSPARENT)
        return;
    MacInstallPen() ;
    wxCoord offset = ( (m_pen.GetWidth() == 0 ? 1 :
    m_pen.GetWidth() ) * (wxCoord)m_scaleX - 1) / 2 ;
    wxCoord x1, x2 , y1 , y2 ;
    x1 = XLOG2DEVMAC(points[0].x + xoffset);
    y1 = YLOG2DEVMAC(points[0].y + yoffset);
    ::MoveTo(x1 - offset, y1 - offset );
    for (int i = 0; i < n-1; i++)
    {
        x2 = XLOG2DEVMAC(points[i+1].x + xoffset);
        y2 = YLOG2DEVMAC(points[i+1].y + yoffset);
        ::LineTo( x2 - offset, y2 - offset );
    }
}

void  wxDC::DoDrawPolygon(int n, wxPoint points[],
                          wxCoord xoffset, wxCoord yoffset,
                          int fillStyle )
{
    wxCHECK_RET(Ok(), wxT("Invalid DC"));
    wxMacFastPortSetter helper(this) ;
    wxCoord x1, x2 , y1 , y2 ;
    if ( m_brush.GetStyle() == wxTRANSPARENT && m_pen.GetStyle() == wxTRANSPARENT )
        return ;
    PolyHandle polygon = OpenPoly();
    x2 = x1 = XLOG2DEVMAC(points[0].x + xoffset);
    y2 = y1 = YLOG2DEVMAC(points[0].y + yoffset);
    ::MoveTo(x1,y1);
    for (int i = 1; i < n; i++)
    {
        x2 = XLOG2DEVMAC(points[i].x + xoffset);
        y2 = YLOG2DEVMAC(points[i].y + yoffset);
        ::LineTo(x2, y2);
    }
    // close the polyline if necessary
    if ( x1 != x2 || y1 != y2 )
    {
        ::LineTo(x1,y1 ) ;
    }
    ClosePoly();
    if (m_brush.GetStyle() != wxTRANSPARENT)
    {
        MacInstallBrush();
        ::PaintPoly( polygon );
    }
    if (m_pen.GetStyle() != wxTRANSPARENT)
    {
        MacInstallPen() ;
        ::FramePoly( polygon ) ;
    }
    KillPoly( polygon );
}

void wxDC::DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
{
    wxCHECK_RET(Ok(), wxT("Invalid DC"));
    wxMacFastPortSetter helper(this) ;
    wxCoord xx = XLOG2DEVMAC(x);
    wxCoord yy = YLOG2DEVMAC(y);
    wxCoord ww = m_signX * XLOG2DEVREL(width);
    wxCoord hh = m_signY * YLOG2DEVREL(height);
    // CMB: draw nothing if transformed w or h is 0
    if (ww == 0 || hh == 0)
        return;
    // CMB: handle -ve width and/or height
    if (ww < 0)
    {
        ww = -ww;
        xx = xx - ww;
    }
    if (hh < 0)
    {
        hh = -hh;
        yy = yy - hh;
    }
    Rect rect = { yy , xx , yy + hh , xx + ww } ;
    if (m_brush.GetStyle() != wxTRANSPARENT)
    {
        MacInstallBrush() ;
        ::PaintRect( &rect ) ;
    }
    if (m_pen.GetStyle() != wxTRANSPARENT)
    {
        MacInstallPen() ;
        ::FrameRect( &rect ) ;
    }
}

void  wxDC::DoDrawRoundedRectangle(wxCoord x, wxCoord y,
                                   wxCoord width, wxCoord height,
                                   double radius)
{
    wxCHECK_RET(Ok(), wxT("Invalid DC"));
    wxMacFastPortSetter helper(this) ;
    if (radius < 0.0)
        radius = - radius * ((width < height) ? width : height);
    wxCoord xx = XLOG2DEVMAC(x);
    wxCoord yy = YLOG2DEVMAC(y);
    wxCoord ww = m_signX * XLOG2DEVREL(width);
    wxCoord hh = m_signY * YLOG2DEVREL(height);
    // CMB: draw nothing if transformed w or h is 0
    if (ww == 0 || hh == 0)
        return;
    // CMB: handle -ve width and/or height
    if (ww < 0)
    {
        ww = -ww;
        xx = xx - ww;
    }
    if (hh < 0)
    {
        hh = -hh;
        yy = yy - hh;
    }
    Rect rect = { yy , xx , yy + hh , xx + ww } ;
    if (m_brush.GetStyle() != wxTRANSPARENT)
    {
        MacInstallBrush() ;
        ::PaintRoundRect( &rect , int(radius * 2) , int(radius * 2) ) ;
    }
    if (m_pen.GetStyle() != wxTRANSPARENT)
    {
        MacInstallPen() ;
        ::FrameRoundRect( &rect , int(radius * 2) , int(radius * 2) ) ;
    }
}

void  wxDC::DoDrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
{
    wxCHECK_RET(Ok(), wxT("Invalid DC"));
    wxMacFastPortSetter helper(this) ;
    wxCoord xx = XLOG2DEVMAC(x);
    wxCoord yy = YLOG2DEVMAC(y);
    wxCoord ww = m_signX * XLOG2DEVREL(width);
    wxCoord hh = m_signY * YLOG2DEVREL(height);
    // CMB: draw nothing if transformed w or h is 0
    if (ww == 0 || hh == 0)
        return;
    // CMB: handle -ve width and/or height
    if (ww < 0)
    {
        ww = -ww;
        xx = xx - ww;
    }
    if (hh < 0)
    {
        hh = -hh;
        yy = yy - hh;
    }
    Rect rect = { yy , xx , yy + hh , xx + ww } ;
    if (m_brush.GetStyle() != wxTRANSPARENT)
    {
        MacInstallBrush() ;
        ::PaintOval( &rect ) ;
    }
    if (m_pen.GetStyle() != wxTRANSPARENT)
    {
        MacInstallPen() ;
        ::FrameOval( &rect ) ;
    }
}

bool  wxDC::CanDrawBitmap(void) const
{
    return true ;
}

bool  wxDC::DoBlit(wxCoord xdest, wxCoord ydest, wxCoord width, wxCoord height,
                   wxDC *source, wxCoord xsrc, wxCoord ysrc, int logical_func , bool useMask,
                   wxCoord xsrcMask,  wxCoord ysrcMask )
{
    wxCHECK_MSG(Ok(), false, wxT("wxDC::DoBlit Illegal dc"));
    wxCHECK_MSG(source->Ok(), false, wxT("wxDC::DoBlit  Illegal source DC"));
    if ( logical_func == wxNO_OP )
        return TRUE ;
    if (xsrcMask == -1 && ysrcMask == -1)
    {
        xsrcMask = xsrc; ysrcMask = ysrc;
    }
    // correct the parameter in case this dc does not have a mask at all
    if ( useMask && !source->m_macMask )
        useMask = false ;
    Rect srcrect , dstrect ;
    srcrect.top = source->YLOG2DEVMAC(ysrc) ;
    srcrect.left = source->XLOG2DEVMAC(xsrc)  ;
    srcrect.right = source->XLOG2DEVMAC(xsrc + width ) ;
    srcrect.bottom = source->YLOG2DEVMAC(ysrc + height) ;
    dstrect.top = YLOG2DEVMAC(ydest) ;
    dstrect.left = XLOG2DEVMAC(xdest) ;
    dstrect.bottom = YLOG2DEVMAC(ydest + height )  ;
    dstrect.right = XLOG2DEVMAC(xdest + width ) ;
    short mode = kUnsupportedMode ;
    bool invertDestinationFirst = false ;
    switch ( logical_func )
    {
    case wxAND:        // src AND dst
        mode = adMin ; // ok
        break ;
    case wxAND_INVERT: // (NOT src) AND dst
        mode = notSrcOr  ; // ok
        break ;
    case wxAND_REVERSE:// src AND (NOT dst)
        invertDestinationFirst = true ;
        mode = srcOr ;
        break ;
    case wxCLEAR:      // 0
        mode = kEmulatedMode ;
        break ;
    case wxCOPY:       // src
        mode = srcCopy ; // ok
        break ;
    case wxEQUIV:      // (NOT src) XOR dst
        mode = srcXor ; // ok
        break ;
    case wxINVERT:     // NOT dst
        mode = kEmulatedMode ; //or hilite ;
        break ;
    case wxNAND:       // (NOT src) OR (NOT dst)
        invertDestinationFirst = true ;
        mode = srcBic ;
        break ;
    case wxNOR:        // (NOT src) AND (NOT dst)
        invertDestinationFirst = true ;
        mode = notSrcOr ;
        break ;
    case wxNO_OP:      // dst
        mode = kEmulatedMode ; // this has already been handled upon entry
        break ;
    case wxOR:         // src OR dst
        mode = notSrcBic ;
        break ;
    case wxOR_INVERT:  // (NOT src) OR dst
        mode = srcBic ;
        break ;
    case wxOR_REVERSE: // src OR (NOT dst)
        invertDestinationFirst = true ;
        mode = notSrcBic ;
        break ;
    case wxSET:        // 1
        mode = kEmulatedMode ;
        break ;
    case wxSRC_INVERT: // (NOT src)
        mode = notSrcCopy ; // ok
        break ;
    case wxXOR:        // src XOR dst
        mode = notSrcXor ; // ok
        break ;
    default :
        break ;
    }
    if ( mode == kUnsupportedMode )
    {
        wxFAIL_MSG(wxT("unsupported blitting mode" ));
        return FALSE ;
    }
    CGrafPtr            sourcePort = (CGrafPtr) source->m_macPort ;
    PixMapHandle    bmappixels =  GetGWorldPixMap( sourcePort ) ;
    if ( LockPixels(bmappixels) )
    {
        wxMacFastPortSetter helper(this) ;
        if ( source->GetDepth() == 1 )
        {
            RGBForeColor( &MAC_WXCOLORREF(m_textForegroundColour.GetPixel()) ) ;
            RGBBackColor( &MAC_WXCOLORREF(m_textBackgroundColour.GetPixel()) ) ;
        }
        else
        {
            // the modes need this, otherwise we'll end up having really nice colors...
            RGBColor    white = { 0xFFFF, 0xFFFF,0xFFFF} ;
            RGBColor    black = { 0,0,0} ;
            RGBForeColor( &black ) ;
            RGBBackColor( &white ) ;
        }
        if ( useMask && source->m_macMask )
        {
            if ( mode == srcCopy )
            {
                if ( LockPixels( GetGWorldPixMap( MAC_WXHBITMAP(source->m_macMask) ) ) )
                {
                    CopyMask( GetPortBitMapForCopyBits( sourcePort ) ,
                        GetPortBitMapForCopyBits( MAC_WXHBITMAP(source->m_macMask) ) ,
                        GetPortBitMapForCopyBits( MAC_WXHBITMAP(m_macPort) ) ,
                        &srcrect, &srcrect , &dstrect ) ;
                    UnlockPixels( GetGWorldPixMap( MAC_WXHBITMAP(source->m_macMask) )  ) ;
                }
            }
            else
            {
                RgnHandle clipRgn = NewRgn() ;
                LockPixels( GetGWorldPixMap( MAC_WXHBITMAP(source->m_macMask) ) ) ;
                BitMapToRegion( clipRgn , (BitMap*) *GetGWorldPixMap( MAC_WXHBITMAP(source->m_macMask) ) ) ;
                UnlockPixels( GetGWorldPixMap( MAC_WXHBITMAP(source->m_macMask) ) ) ;
                OffsetRgn( clipRgn , -srcrect.left + dstrect.left, -srcrect.top +  dstrect.top ) ;
                if ( mode == kEmulatedMode )
                {
                    Pattern pat ;
                    ::PenPat(GetQDGlobalsBlack(&pat));
                    if ( logical_func == wxSET )
                    {
                        RGBColor col= { 0xFFFF, 0xFFFF, 0xFFFF } ;
                        ::RGBForeColor( &col  ) ;
                        ::PaintRgn( clipRgn ) ;
                    }
                    else if ( logical_func == wxCLEAR )
                    {
                        RGBColor col= { 0x0000, 0x0000, 0x0000 } ;
                        ::RGBForeColor( &col  ) ;
                        ::PaintRgn( clipRgn ) ;
                    }
                    else if ( logical_func == wxINVERT )
                    {
                        MacInvertRgn( clipRgn ) ;
                    }
                    else
                    {
                        for ( int y = 0 ; y < srcrect.right - srcrect.left ; ++y )
                        {
                            for ( int x = 0 ; x < srcrect.bottom - srcrect.top ; ++x )
                            {
                                Point dstPoint = { dstrect.top + y , dstrect.left + x } ;
                                Point srcPoint = { srcrect.top + y , srcrect.left + x } ;
                                if ( PtInRgn( dstPoint , clipRgn ) )
                                {
                                    RGBColor srcColor ;
                                    RGBColor dstColor ;
                                    SetPort( (GrafPtr) sourcePort ) ;
                                    GetCPixel(  srcPoint.h , srcPoint.v , &srcColor) ;
                                    SetPort( (GrafPtr) m_macPort ) ;
                                    GetCPixel( dstPoint.h , dstPoint.v , &dstColor ) ;
                                    wxMacCalculateColour( logical_func , srcColor ,  dstColor ) ;
                                    SetCPixel( dstPoint.h , dstPoint.v , &dstColor ) ;
                                }
                            }
                        }
                    }
                }
                else
                {
                    if ( invertDestinationFirst )
                    {
                        MacInvertRgn( clipRgn ) ;
                    }
                    CopyBits( GetPortBitMapForCopyBits( sourcePort ) ,
                        GetPortBitMapForCopyBits( MAC_WXHBITMAP(m_macPort) ) ,
                        &srcrect, &dstrect, mode, clipRgn ) ;
                }
                DisposeRgn( clipRgn ) ;
            }
        }
        else
        {
            RgnHandle clipRgn = NewRgn() ;
            SetRectRgn( clipRgn , dstrect.left , dstrect.top , dstrect.right , dstrect.bottom ) ;
            if ( mode == kEmulatedMode )
            {
                Pattern pat ;
                ::PenPat(GetQDGlobalsBlack(&pat));
                if ( logical_func == wxSET )
                {
                    RGBColor col= { 0xFFFF, 0xFFFF, 0xFFFF } ;
                    ::RGBForeColor( &col  ) ;
                    ::PaintRgn( clipRgn ) ;
                }
                else if ( logical_func == wxCLEAR )
                {
                    RGBColor col= { 0x0000, 0x0000, 0x0000 } ;
                    ::RGBForeColor( &col  ) ;
                    ::PaintRgn( clipRgn ) ;
                }
                else if ( logical_func == wxINVERT )
                {
                    MacInvertRgn( clipRgn ) ;
                }
                else
                {
                    for ( int y = 0 ; y < srcrect.right - srcrect.left ; ++y )
                    {
                        for ( int x = 0 ; x < srcrect.bottom - srcrect.top ; ++x )
                        {
                            Point dstPoint = { dstrect.top + y , dstrect.left + x } ;
                            Point srcPoint = { srcrect.top + y , srcrect.left + x } ;
                            {
                                RGBColor srcColor ;
                                RGBColor dstColor ;
                                SetPort( (GrafPtr) sourcePort ) ;
                                GetCPixel(  srcPoint.h , srcPoint.v , &srcColor) ;
                                SetPort( (GrafPtr) m_macPort ) ;
                                GetCPixel( dstPoint.h , dstPoint.v , &dstColor ) ;
                                wxMacCalculateColour( logical_func , srcColor ,  dstColor ) ;
                                SetCPixel( dstPoint.h , dstPoint.v , &dstColor ) ;
                            }
                        }
                    }
                }
            }
            else
            {
                if ( invertDestinationFirst )
                {
                    MacInvertRgn( clipRgn ) ;
                }
                CopyBits( GetPortBitMapForCopyBits( sourcePort ) ,
                    GetPortBitMapForCopyBits( MAC_WXHBITMAP(m_macPort) ) ,
                    &srcrect, &dstrect, mode, NULL ) ;
            }
            DisposeRgn( clipRgn ) ;
        }
        UnlockPixels( bmappixels ) ;
    }
    m_macPenInstalled = false ;
    m_macBrushInstalled = false ;
    m_macFontInstalled = false ;
    return TRUE;
}

#ifndef FixedToInt
// as macro in FixMath.h for 10.3
inline Fixed    IntToFixed( int inInt )
{
    return (((SInt32) inInt) << 16);
}

inline int    FixedToInt( Fixed inFixed )
{
    return (((SInt32) inFixed) >> 16);
}
#endif

void  wxDC::DoDrawRotatedText(const wxString& str, wxCoord x, wxCoord y,
                              double angle)
{
    wxCHECK_RET( Ok(), wxT("wxDC::DoDrawRotatedText  Invalid window dc") );
/*
    if (angle == 0.0 )
    {
        DrawText(str, x, y);
        return;
    }

    if ( str.Length() == 0 )
        return ;
*/      
    wxMacFastPortSetter helper(this) ;
    MacInstallFont() ;

    if ( 0 )
    {
        m_macFormerAliasState = IsAntiAliasedTextEnabled(&m_macFormerAliasSize);
        SetAntiAliasedTextEnabled(true, SInt16(m_scaleY * m_font.MacGetFontSize()));
        m_macAliasWasEnabled = true ;
    }
    OSStatus status = noErr ;
    ATSUTextLayout atsuLayout ;
    UniCharCount chars = str.Length() ;
#if wxUSE_UNICODE
    status = ::ATSUCreateTextLayoutWithTextPtr( (UniCharArrayPtr) (const wxChar*) str , 0 , str.Length() , str.Length() , 1 ,
        &chars , (ATSUStyle*) &m_macATSUIStyle , &atsuLayout ) ;
#else
    wxWCharBuffer wchar = str.wc_str( wxConvLocal ) ;
    int wlen = wxWcslen( wchar.data() ) ;
    status = ::ATSUCreateTextLayoutWithTextPtr( (UniCharArrayPtr) wchar.data() , 0 , wlen , wlen , 1 ,
        &chars , (ATSUStyle*) &m_macATSUIStyle , &atsuLayout ) ;
#endif
    wxASSERT_MSG( status == noErr , wxT("couldn't create the layout of the rotated text") );
    int iAngle = int( angle );
    int drawX = XLOG2DEVMAC(x) ;
    int drawY = YLOG2DEVMAC(y) ;
    
    ATSUTextMeasurement textBefore ;
    ATSUTextMeasurement textAfter ;
    ATSUTextMeasurement ascent ;
    ATSUTextMeasurement descent ;
    
    
    if ( abs(iAngle) > 0 )
    {
        Fixed atsuAngle = IntToFixed( iAngle ) ;
        ATSUAttributeTag atsuTags[] =
        {
            kATSULineRotationTag ,
        } ;
        ByteCount atsuSizes[sizeof(atsuTags)/sizeof(ATSUAttributeTag)] =
        {
            sizeof( Fixed ) ,
        } ;
        ATSUAttributeValuePtr    atsuValues[sizeof(atsuTags)/sizeof(ATSUAttributeTag)] =
        {
            &atsuAngle ,
        } ;
        status = ::ATSUSetLayoutControls(atsuLayout , sizeof(atsuTags)/sizeof(ATSUAttributeTag),
            atsuTags, atsuSizes, atsuValues ) ;
    }
    status = ::ATSUMeasureText( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
        &textBefore , &textAfter, &ascent , &descent );
    
    drawX += (int)(sin(angle/RAD2DEG) * FixedToInt(ascent));
    drawY += (int)(cos(angle/RAD2DEG) * FixedToInt(ascent));
    status = ::ATSUDrawText( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
        IntToFixed(drawX) , IntToFixed(drawY) );
    wxASSERT_MSG( status == noErr , wxT("couldn't draw the rotated text") );
    Rect rect ;
    status = ::ATSUMeasureTextImage( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
        IntToFixed(drawX) , IntToFixed(drawY) , &rect );
    wxASSERT_MSG( status == noErr , wxT("couldn't measure the rotated text") );
    OffsetRect( &rect , -m_macLocalOrigin.x , -m_macLocalOrigin.y ) ;
    CalcBoundingBox(XDEV2LOG(rect.left), YDEV2LOG(rect.top) );
    CalcBoundingBox(XDEV2LOG(rect.right), YDEV2LOG(rect.bottom) );
    ::ATSUDisposeTextLayout(atsuLayout);
}

void  wxDC::DoDrawText(const wxString& strtext, wxCoord x, wxCoord y)
{
    wxCHECK_RET(Ok(), wxT("wxDC::DoDrawText  Invalid DC"));

    wxMacFastPortSetter helper(this) ;
    long xx = XLOG2DEVMAC(x);
    long yy = YLOG2DEVMAC(y);
#if TARGET_CARBON
    bool useDrawThemeText = ( DrawThemeTextBox != (void*) kUnresolvedCFragSymbolAddress ) ;
    if ( UMAGetSystemVersion() < 0x1000 || IsKindOf(CLASSINFO( wxPrinterDC ) ) || m_font.GetNoAntiAliasing() )
        useDrawThemeText = false ;
#endif
    MacInstallFont() ;
    if ( 0 )
    {
        m_macFormerAliasState = IsAntiAliasedTextEnabled(&m_macFormerAliasSize);
        SetAntiAliasedTextEnabled(true, 8);
        m_macAliasWasEnabled = true ;
    }
    FontInfo fi ;
    ::GetFontInfo( &fi ) ;
#if TARGET_CARBON
    if ( !useDrawThemeText )
#endif
        yy += fi.ascent ;
    ::MoveTo( xx , yy );
    if (  m_backgroundMode == wxTRANSPARENT )
    {
        ::TextMode( srcOr) ;
    }
    else
    {
        ::TextMode( srcCopy ) ;
    }
    int line = 0 ;
    {
        wxString linetext = strtext ;
#if TARGET_CARBON
        if ( useDrawThemeText )
        {
            Rect frame = { yy + line*(fi.descent + fi.ascent + fi.leading)  ,xx , yy + (line+1)*(fi.descent + fi.ascent + fi.leading) , xx + 10000 } ;
            wxMacCFStringHolder mString( linetext , m_font.GetEncoding()) ;

            if ( m_backgroundMode != wxTRANSPARENT )
            {
                Point bounds={0,0} ;
                Rect background = frame ;
                SInt16 baseline ;
                ::GetThemeTextDimensions( mString,
                    m_font.MacGetThemeFontID() ,
                    kThemeStateActive,
                    false,
                    &bounds,
                    &baseline );
                background.right = background.left + bounds.h ;
                background.bottom = background.top + bounds.v ;
                ::EraseRect( &background ) ;
            }
            ::DrawThemeTextBox( mString,
                m_font.MacGetThemeFontID() ,
                kThemeStateActive,
                false,
                &frame,
                teJustLeft,
                nil );
        }
        else
#endif
        {
            wxCharBuffer text = linetext.mb_str(wxConvLocal) ; 
            if ( m_backgroundMode != wxTRANSPARENT )
            {
                Rect frame = { yy - fi.ascent + line*(fi.descent + fi.ascent + fi.leading)  ,xx , yy - fi.ascent + (line+1)*(fi.descent + fi.ascent + fi.leading) , xx + 10000 } ;
                short width = ::TextWidth( text , 0 , strlen(text) ) ;
                frame.right = frame.left + width ;

                ::EraseRect( &frame ) ;
            }
            ::DrawText( text , 0 , strlen(text) ) ;
         }
    }
    ::TextMode( srcOr ) ;
}

bool  wxDC::CanGetTextExtent() const
{
    wxCHECK_MSG(Ok(), false, wxT("Invalid DC"));
    return true ;
}

void  wxDC::DoGetTextExtent( const wxString &strtext, wxCoord *width, wxCoord *height,
                            wxCoord *descent, wxCoord *externalLeading ,
                            wxFont *theFont ) const
{
    wxCHECK_RET(Ok(), wxT("Invalid DC"));
    wxMacFastPortSetter helper(this) ;
    wxFont formerFont = m_font ;
    if ( theFont )
    {
        // work around the constness
        *((wxFont*)(&m_font)) = *theFont ;
    }
    MacInstallFont() ;
    FontInfo fi ;
    ::GetFontInfo( &fi ) ;
#if TARGET_CARBON    
    bool useGetThemeText = ( GetThemeTextDimensions != (void*) kUnresolvedCFragSymbolAddress ) ;
    if ( UMAGetSystemVersion() < 0x1000 || IsKindOf(CLASSINFO( wxPrinterDC ) ) || ((wxFont*)&m_font)->GetNoAntiAliasing() )
        useGetThemeText = false ;
#endif
    if ( height )
        *height = YDEV2LOGREL( fi.descent + fi.ascent ) ;
    if ( descent )
        *descent =YDEV2LOGREL( fi.descent );
    if ( externalLeading )
        *externalLeading = YDEV2LOGREL( fi.leading ) ;

    int curwidth = 0 ;
    if ( width )
    {
        *width = 0 ;
        wxString linetext = strtext ;

        if ( useGetThemeText )
        {
            Point bounds={0,0} ;
            SInt16 baseline ;
            wxMacCFStringHolder mString( linetext , m_font.GetEncoding() ) ;
            ThemeFontID themeFont = m_font.MacGetThemeFontID() ;
            ::GetThemeTextDimensions( mString,
                themeFont ,
                kThemeStateActive,
                false,
                &bounds,
                &baseline );
            curwidth = bounds.h ;
        }
        else
        {
            wxCharBuffer text = linetext.mb_str(wxConvLocal) ;  
            curwidth = ::TextWidth( text , 0 , strlen(text) ) ;
        }
        if ( curwidth > *width )
            *width = XDEV2LOGREL( curwidth ) ;
    }
    if ( theFont )
    {
        // work around the constness
        *((wxFont*)(&m_font)) = formerFont ;
        m_macFontInstalled = false ;
    }
}


bool wxDC::DoGetPartialTextExtents(const wxString& text, wxArrayInt& widths) const
{
    wxCHECK_MSG(Ok(), false, wxT("Invalid DC"));

    widths.Empty();
    widths.Add(0, text.Length());

    if (text.Length() == 0)
        return false;
    
    wxMacFastPortSetter helper(this) ;
    MacInstallFont() ;
#if TARGET_CARBON    
    bool useGetThemeText = ( GetThemeTextDimensions != (void*) kUnresolvedCFragSymbolAddress ) ;
    if ( UMAGetSystemVersion() < 0x1000 || IsKindOf(CLASSINFO( wxPrinterDC ) ) || ((wxFont*)&m_font)->GetNoAntiAliasing() )
        useGetThemeText = false ;

    if ( useGetThemeText )
    {
        // If anybody knows how to do this more efficiently yet still handle
        // the fractional glyph widths that may be present when using AA
        // fonts, please change it.  Currently it is measuring from the
        // begining of the string for each succeding substring, which is much
        // slower than this should be.
        for (size_t i=0; i<text.Length(); i++)
        {
            wxString str(text.Left(i+1));
            Point bounds = {0,0};
            SInt16 baseline ;
            wxMacCFStringHolder mString(str, m_font.GetEncoding());
            ::GetThemeTextDimensions( mString,
                                      m_font.MacGetThemeFontID(),
                                      kThemeStateActive,
                                      false,
                                      &bounds,
                                      &baseline );
            widths[i] = XDEV2LOGREL(bounds.h);
        }
    }
    else        
#endif
    {
        wxCharBuffer buff = text.mb_str(wxConvLocal);
        size_t len = strlen(buff);
        short* measurements = new short[len+1];
        MeasureText(len, buff.data(), measurements);

        // Copy to widths, starting at measurements[1]
        // NOTE: this doesn't take into account any multi-byte characters
        // in buff, it probabkly should...
        for (size_t i=0; i<text.Length(); i++)
            widths[i] = XDEV2LOGREL(measurements[i+1]);

        delete [] measurements;        
    }

    return true;
}



wxCoord   wxDC::GetCharWidth(void) const
{
    wxCHECK_MSG(Ok(), 1, wxT("Invalid DC"));
    wxMacFastPortSetter helper(this) ;
    MacInstallFont() ;
    int width = 0 ;
#if TARGET_CARBON
    bool useGetThemeText = ( GetThemeTextDimensions != (void*) kUnresolvedCFragSymbolAddress ) ;
    if ( UMAGetSystemVersion() < 0x1000 || ((wxFont*)&m_font)->GetNoAntiAliasing() )
        useGetThemeText = false ;
#endif
    char text[] = "g" ;
#if TARGET_CARBON
    if ( useGetThemeText )
    {
        Point bounds={0,0} ;
        SInt16 baseline ;
        CFStringRef mString = CFStringCreateWithBytes( NULL , (UInt8*) text , 1 , CFStringGetSystemEncoding(), false ) ;
        ::GetThemeTextDimensions( mString,
            m_font.MacGetThemeFontID(),
            kThemeStateActive,
            false,
            &bounds,
            &baseline );
        CFRelease( mString ) ;
        width = bounds.h ;
    }
    else
#endif
    {
        width = ::TextWidth( text , 0 , 1 ) ;
    }
    return YDEV2LOGREL(width) ;
}

wxCoord   wxDC::GetCharHeight(void) const
{
    wxCHECK_MSG(Ok(), 1, wxT("Invalid DC"));
    wxMacFastPortSetter helper(this) ;
    MacInstallFont() ;
    FontInfo fi ;
    ::GetFontInfo( &fi ) ;
    return YDEV2LOGREL( fi.descent + fi.ascent );
}

void  wxDC::Clear(void)
{
    wxCHECK_RET(Ok(), wxT("Invalid DC"));
    wxMacFastPortSetter helper(this) ;
    Rect rect = { -31000 , -31000 , 31000 , 31000 } ;
    if ( m_backgroundBrush.Ok() && m_backgroundBrush.GetStyle() != wxTRANSPARENT)
    {
        ::PenNormal() ;
        MacSetupBackgroundForCurrentPort( m_backgroundBrush ) ;
        ::EraseRect( &rect ) ;
    }
}

void wxDC::MacInstallFont() const
{
    wxCHECK_RET(Ok(), wxT("Invalid DC"));
    //    if ( m_macFontInstalled )
    //        return ;
    Pattern blackColor ;
    MacSetupBackgroundForCurrentPort(m_backgroundBrush) ;
    if ( m_font.Ok() )
    {
        ::TextFont( m_font.MacGetFontNum() ) ;
        ::TextSize( (short)(m_scaleY * m_font.MacGetFontSize()) ) ;
        ::TextFace( m_font.MacGetFontStyle() ) ;
        m_macFontInstalled = true ;
        m_macBrushInstalled = false ;
        m_macPenInstalled = false ;
        RGBColor forecolor = MAC_WXCOLORREF( m_textForegroundColour.GetPixel());
        RGBColor backcolor = MAC_WXCOLORREF( m_textBackgroundColour.GetPixel());
        ::RGBForeColor( &forecolor );
        ::RGBBackColor( &backcolor );
    }
    else
    {
        FontFamilyID fontId ;
        Str255 fontName ;
        SInt16 fontSize ;
        Style fontStyle ;
        GetThemeFont(kThemeSmallSystemFont , GetApplicationScript() , fontName , &fontSize , &fontStyle ) ;
        GetFNum( fontName, &fontId );
        ::TextFont( fontId ) ;
        ::TextSize( short(m_scaleY * fontSize) ) ;
        ::TextFace( fontStyle ) ;
        // todo reset after spacing changes - or store the current spacing somewhere
        m_macFontInstalled = true ;
        m_macBrushInstalled = false ;
        m_macPenInstalled = false ;
        RGBColor forecolor = MAC_WXCOLORREF( m_textForegroundColour.GetPixel());
        RGBColor backcolor = MAC_WXCOLORREF( m_textBackgroundColour.GetPixel());
        ::RGBForeColor( &forecolor );
        ::RGBBackColor( &backcolor );
    }
    short mode = patCopy ;
    // todo :
    switch( m_logicalFunction )
    {
    case wxCOPY:       // src
        mode = patCopy ;
        break ;
    case wxINVERT:     // NOT dst
        ::PenPat(GetQDGlobalsBlack(&blackColor));
        mode = patXor ;
        break ;
    case wxXOR:        // src XOR dst
        mode = patXor ;
        break ;
    case wxOR_REVERSE: // src OR (NOT dst)
        mode = notPatOr ;
        break ;
    case wxSRC_INVERT: // (NOT src)
        mode = notPatCopy ;
        break ;
    case wxAND: // src AND dst
        mode = adMin ;
        break ;
        // unsupported TODO
    case wxCLEAR:      // 0
    case wxAND_REVERSE:// src AND (NOT dst)
    case wxAND_INVERT: // (NOT src) AND dst
    case wxNO_OP:      // dst
    case wxNOR:        // (NOT src) AND (NOT dst)
    case wxEQUIV:      // (NOT src) XOR dst
    case wxOR_INVERT:  // (NOT src) OR dst
    case wxNAND:       // (NOT src) OR (NOT dst)
    case wxOR:         // src OR dst
    case wxSET:        // 1
        //        case wxSRC_OR:     // source _bitmap_ OR destination
        //        case wxSRC_AND:     // source _bitmap_ AND destination
        break ;
    }
    ::PenMode( mode ) ;
    OSStatus status = noErr ;
    Fixed atsuSize = IntToFixed( int(m_scaleY * m_font.MacGetFontSize()) ) ;
    Style qdStyle = m_font.MacGetATSUAdditionalQDStyles() ;
    ATSUFontID    atsuFont = m_font.MacGetATSUFontID() ;
    status = ::ATSUCreateStyle((ATSUStyle *)&m_macATSUIStyle) ;
    wxASSERT_MSG( status == noErr , wxT("couldn't create ATSU style") ) ;
    ATSUAttributeTag atsuTags[] =
    {
        kATSUFontTag ,
            kATSUSizeTag ,
            //        kATSUColorTag ,
            //        kATSUBaselineClassTag ,
            kATSUVerticalCharacterTag,
            kATSUQDBoldfaceTag ,
            kATSUQDItalicTag ,
            kATSUQDUnderlineTag ,
            kATSUQDCondensedTag ,
            kATSUQDExtendedTag ,
    } ;
    ByteCount atsuSizes[sizeof(atsuTags)/sizeof(ATSUAttributeTag)] =
    {
        sizeof( ATSUFontID ) ,
            sizeof( Fixed ) ,
            //        sizeof( RGBColor ) ,
            //        sizeof( BslnBaselineClass ) ,
            sizeof( ATSUVerticalCharacterType),
            sizeof( Boolean ) ,
            sizeof( Boolean ) ,
            sizeof( Boolean ) ,
            sizeof( Boolean ) ,
            sizeof( Boolean ) ,
    } ;
    Boolean kTrue = true ;
    Boolean kFalse = false ;
    //BslnBaselineClass kBaselineDefault = kBSLNHangingBaseline ;
    ATSUVerticalCharacterType kHorizontal = kATSUStronglyHorizontal;
    ATSUAttributeValuePtr    atsuValues[sizeof(atsuTags)/sizeof(ATSUAttributeTag)] =
    {
        &atsuFont ,
            &atsuSize ,
            //        &MAC_WXCOLORREF( m_textForegroundColour.GetPixel() ) ,
            //        &kBaselineDefault ,
            &kHorizontal,
            (qdStyle & bold) ? &kTrue : &kFalse ,
            (qdStyle & italic) ? &kTrue : &kFalse ,
            (qdStyle & underline) ? &kTrue : &kFalse ,
            (qdStyle & condense) ? &kTrue : &kFalse ,
            (qdStyle & extend) ? &kTrue : &kFalse ,
    } ;
    status = ::ATSUSetAttributes((ATSUStyle)m_macATSUIStyle, sizeof(atsuTags)/sizeof(ATSUAttributeTag) ,
        atsuTags, atsuSizes, atsuValues);
    wxASSERT_MSG( status == noErr , wxT("couldn't set create ATSU style") ) ;
}

Pattern gPatterns[] =
{   // hatch patterns
    { { 0xFF , 0xFF , 0xFF , 0xFF , 0xFF , 0xFF , 0xFF , 0xFF } } ,
    { { 0x01 , 0x02 , 0x04 , 0x08 , 0x10 , 0x20 , 0x40 , 0x80 } } ,
    { { 0x80 , 0x40 , 0x20 , 0x10 , 0x08 , 0x04 , 0x02 , 0x01 } } ,
    { { 0x10 , 0x10 , 0x10 , 0xFF , 0x10 , 0x10 , 0x10 , 0x10 } } ,
    { { 0x00 , 0x00 , 0x00 , 0xFF , 0x00 , 0x00 , 0x00 , 0x00 } } ,
    { { 0x10 , 0x10 , 0x10 , 0x10 , 0x10 , 0x10 , 0x10 , 0x10 } } ,
    { { 0x81 , 0x42 , 0x24 , 0x18 , 0x18 , 0x24 , 0x42 , 0x81 } } ,
    // dash patterns
    { { 0xCC , 0x99 , 0x33 , 0x66 , 0xCC , 0x99 , 0x33 , 0x66 } } , // DOT
    { { 0xFE , 0xFD , 0xFB , 0xF7 , 0xEF , 0xDF , 0xBF , 0x7F } } , // LONG_DASH
    { { 0xEE , 0xDD , 0xBB , 0x77 , 0xEE , 0xDD , 0xBB , 0x77 } } , // SHORT_DASH
    { { 0xDE , 0xBD , 0x7B , 0xF6 , 0xED , 0xDB , 0xB7 , 0x6F } } , // DOT_DASH
} ;

static void wxMacGetPattern(int penStyle, Pattern *pattern)
{
    int index = 0;  // solid pattern by default
    switch(penStyle)
    {   
        // hatches
        case wxBDIAGONAL_HATCH:     index = 1; break;
        case wxFDIAGONAL_HATCH:     index = 2; break;
        case wxCROSS_HATCH:         index = 3; break;
        case wxHORIZONTAL_HATCH:    index = 4; break;
        case wxVERTICAL_HATCH:      index = 5; break;
        case wxCROSSDIAG_HATCH:     index = 6; break;
        // dashes
        case wxDOT:                 index = 7; break;
        case wxLONG_DASH:           index = 8; break;
        case wxSHORT_DASH:          index = 9; break;
        case wxDOT_DASH:            index = 10; break;
    }
    *pattern = gPatterns[index];    
}

void wxDC::MacInstallPen() const
{
    wxCHECK_RET(Ok(), wxT("Invalid DC"));
    //Pattern     blackColor;
    //    if ( m_macPenInstalled )
    //        return ;
    RGBColor forecolor = MAC_WXCOLORREF( m_pen.GetColour().GetPixel());
    RGBColor backcolor = MAC_WXCOLORREF( m_backgroundBrush.GetColour().GetPixel());
    ::RGBForeColor( &forecolor );
    ::RGBBackColor( &backcolor );
    ::PenNormal() ;
    int penWidth = (int) (m_pen.GetWidth() * m_scaleX) ; ;
    // null means only one pixel, at whatever resolution
    if ( penWidth == 0 )
        penWidth = 1 ;
    ::PenSize(penWidth, penWidth);
    
    int penStyle = m_pen.GetStyle();
    Pattern pat;
    if (penStyle == wxUSER_DASH)
    {   
        // FIXME: there should be exactly 8 items in the dash
        wxDash* dash ;
        int number = m_pen.GetDashes(&dash) ;
        int index = 0;
        for ( int i = 0 ; i < 8 ; ++i )
        {
            pat.pat[i] = dash[index] ;
            if (index < number - 1)
                index++;
        }
    }
    else
    {
        wxMacGetPattern(penStyle, &pat);
    }
    ::PenPat(&pat);

    short mode = patCopy ;
    // todo :
    switch( m_logicalFunction )
    {
    case wxCOPY:       // only foreground color, leave background (thus not patCopy)
        mode = patOr ;
        break ;
    case wxINVERT:     // NOT dst
        //            ::PenPat(GetQDGlobalsBlack(&blackColor));
        mode = patXor ;
        break ;
    case wxXOR:        // src XOR dst
        mode = patXor ;
        break ;
    case wxOR_REVERSE: // src OR (NOT dst)
        mode = notPatOr ;
        break ;
    case wxSRC_INVERT: // (NOT src)
        mode = notPatCopy ;
        break ;
    case wxAND: // src AND dst
        mode = adMin ;
        break ;
        // unsupported TODO
    case wxCLEAR:      // 0
    case wxAND_REVERSE:// src AND (NOT dst)
    case wxAND_INVERT: // (NOT src) AND dst
    case wxNO_OP:      // dst
    case wxNOR:        // (NOT src) AND (NOT dst)
    case wxEQUIV:      // (NOT src) XOR dst
    case wxOR_INVERT:  // (NOT src) OR dst
    case wxNAND:       // (NOT src) OR (NOT dst)
    case wxOR:         // src OR dst
    case wxSET:        // 1
        //        case wxSRC_OR:     // source _bitmap_ OR destination
        //        case wxSRC_AND:     // source _bitmap_ AND destination
        break ;
    }
    ::PenMode( mode ) ;
    m_macPenInstalled = true ;
    m_macBrushInstalled = false ;
    m_macFontInstalled = false ;
}

void wxDC::MacSetupBackgroundForCurrentPort(const wxBrush& background )
{
    Pattern whiteColor ;
    if ( background.Ok() )
    {
        switch( background.MacGetBrushKind() )
        {
            case kwxMacBrushTheme :
            {
                ::SetThemeBackground( background.MacGetTheme() , wxDisplayDepth() , true ) ;
                break ;
            }
            case kwxMacBrushThemeBackground :
            {
                Rect extent ;
                ThemeBackgroundKind bg = background.MacGetThemeBackground( &extent ) ;
                ::ApplyThemeBackground( bg , &extent ,kThemeStateActive , wxDisplayDepth() , true ) ;
                break ;
            }
            case kwxMacBrushColour :
            {
                ::RGBBackColor( &MAC_WXCOLORREF( background.GetColour().GetPixel()) );
                int brushStyle = background.GetStyle();
                if (brushStyle == wxSOLID)
                    ::BackPat(GetQDGlobalsWhite(&whiteColor));
                else if (IS_HATCH(brushStyle))
                {
                    Pattern pat ;
                    wxMacGetPattern(brushStyle, &pat);
                    ::BackPat(&pat);
                }
                else
                {
                    ::BackPat(GetQDGlobalsWhite(&whiteColor));
                }
                break ;
            }
        }
    }
}

void wxDC::MacInstallBrush() const
{
    wxCHECK_RET(Ok(), wxT("Invalid DC"));
    Pattern     blackColor ;
    //    if ( m_macBrushInstalled )
    //        return ;
    // foreground
    bool backgroundTransparent = (GetBackgroundMode() == wxTRANSPARENT) ;
    ::RGBForeColor( &MAC_WXCOLORREF( m_brush.GetColour().GetPixel()) );
    ::RGBBackColor( &MAC_WXCOLORREF( m_backgroundBrush.GetColour().GetPixel()) );
    int brushStyle = m_brush.GetStyle();
    if (brushStyle == wxSOLID)
    {
        ::PenPat(GetQDGlobalsBlack(&blackColor));
    }
    else if (IS_HATCH(brushStyle))
    {
        Pattern pat ;
        wxMacGetPattern(brushStyle, &pat);
        ::PenPat(&pat);
    }
    else if ( m_brush.GetStyle() == wxSTIPPLE || m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE )
    {
        // we force this in order to be compliant with wxMSW
        backgroundTransparent = false ;
        // for these the text fore (and back for MASK_OPAQUE) colors are used
        wxBitmap* bitmap = m_brush.GetStipple() ;
        int width = bitmap->GetWidth() ;
        int height = bitmap->GetHeight() ;
        GWorldPtr gw = NULL ;
        if ( m_brush.GetStyle() == wxSTIPPLE )
            gw = MAC_WXHBITMAP(bitmap->GetHBITMAP())  ;
        else
            gw = MAC_WXHBITMAP(bitmap->GetMask()->GetMaskBitmap()) ;
        PixMapHandle gwpixmaphandle = GetGWorldPixMap( gw ) ;
        LockPixels( gwpixmaphandle ) ;
        bool isMonochrome = !IsPortColor( gw ) ;
        if ( !isMonochrome )
        {
            if ( (**gwpixmaphandle).pixelSize == 1 )
                isMonochrome = true ;
        }
        if ( isMonochrome && width == 8 && height == 8 )
        {
            ::RGBForeColor( &MAC_WXCOLORREF( m_textForegroundColour.GetPixel()) );
            ::RGBForeColor( &MAC_WXCOLORREF( m_textBackgroundColour.GetPixel()) );
            BitMap* gwbitmap = (BitMap*) *gwpixmaphandle ; // since the color depth is 1 it is a BitMap
            UInt8 *gwbits = (UInt8*) gwbitmap->baseAddr ;
            int alignment = gwbitmap->rowBytes & 0x7FFF ;
            Pattern pat ;
            for ( int i = 0 ; i < 8 ; ++i )
            {
                pat.pat[i] = gwbits[i*alignment+0] ;
            }
            UnlockPixels( GetGWorldPixMap( gw ) ) ;
            ::PenPat( &pat ) ;
        }
        else
        {
            // this will be the code to handle power of 2 patterns, we will have to arrive at a nice
            // caching scheme before putting this into production
            Handle      image;
            long        imageSize;
            PixPatHandle pixpat = NewPixPat() ;
            CopyPixMap(gwpixmaphandle, (**pixpat).patMap);
            imageSize = GetPixRowBytes((**pixpat).patMap) *
                ((**(**pixpat).patMap).bounds.bottom -
                (**(**pixpat).patMap).bounds.top);
            PtrToHand( (**gwpixmaphandle).baseAddr, &image, imageSize );
            (**pixpat).patData = image;
            if ( isMonochrome )
            {
                CTabHandle ctable = ((**((**pixpat).patMap)).pmTable) ;
                ColorSpecPtr ctspec = (ColorSpecPtr) &(**ctable).ctTable ;
                if ( ctspec[0].rgb.red == 0x0000 )
                {
                    ctspec[1].rgb = MAC_WXCOLORREF( m_textBackgroundColour.GetPixel()) ;
                    ctspec[0].rgb = MAC_WXCOLORREF( m_textForegroundColour.GetPixel()) ;
                }
                else
                {
                    ctspec[0].rgb = MAC_WXCOLORREF( m_textBackgroundColour.GetPixel()) ;
                    ctspec[1].rgb = MAC_WXCOLORREF( m_textForegroundColour.GetPixel()) ;
                }
                ::CTabChanged( ctable ) ;
            }
            ::PenPixPat(pixpat);
            m_macForegroundPixMap = pixpat ;
        }
        UnlockPixels( gwpixmaphandle ) ;
    }
    else
    {
        ::PenPat(GetQDGlobalsBlack(&blackColor));
    }
    short mode = patCopy ;
    switch( m_logicalFunction )
    {
    case wxCOPY:       // src
        if ( backgroundTransparent )
            mode = patOr ;
        else
            mode = patCopy ;
        break ;
    case wxINVERT:     // NOT dst
        if ( !backgroundTransparent )
        {
            ::PenPat(GetQDGlobalsBlack(&blackColor));
        }
        mode = patXor ;
        break ;
    case wxXOR:        // src XOR dst
        mode = patXor ;
        break ;
    case wxOR_REVERSE: // src OR (NOT dst)
        mode = notPatOr ;
        break ;
    case wxSRC_INVERT: // (NOT src)
        mode = notPatCopy ;
        break ;
    case wxAND: // src AND dst
        mode = adMin ;
        break ;
        // unsupported TODO
    case wxCLEAR:      // 0
    case wxAND_REVERSE:// src AND (NOT dst)
    case wxAND_INVERT: // (NOT src) AND dst
    case wxNO_OP:      // dst
    case wxNOR:        // (NOT src) AND (NOT dst)
    case wxEQUIV:      // (NOT src) XOR dst
    case wxOR_INVERT:  // (NOT src) OR dst
    case wxNAND:       // (NOT src) OR (NOT dst)
    case wxOR:         // src OR dst
    case wxSET:        // 1
        //        case wxSRC_OR:     // source _bitmap_ OR destination
        //        case wxSRC_AND:     // source _bitmap_ AND destination
        break ;
    }
    ::PenMode( mode ) ;
    m_macBrushInstalled = true ;
    m_macPenInstalled = false ;
    m_macFontInstalled = false ;
}

// ---------------------------------------------------------------------------
// coordinates transformations
// ---------------------------------------------------------------------------

wxCoord wxDCBase::DeviceToLogicalX(wxCoord x) const
{
    return ((wxDC *)this)->XDEV2LOG(x);
}

wxCoord wxDCBase::DeviceToLogicalY(wxCoord y) const
{
    return ((wxDC *)this)->YDEV2LOG(y);
}

wxCoord wxDCBase::DeviceToLogicalXRel(wxCoord x) const
{
    return ((wxDC *)this)->XDEV2LOGREL(x);
}

wxCoord wxDCBase::DeviceToLogicalYRel(wxCoord y) const
{
    return ((wxDC *)this)->YDEV2LOGREL(y);
}

wxCoord wxDCBase::LogicalToDeviceX(wxCoord x) const
{
    return ((wxDC *)this)->XLOG2DEV(x);
}

wxCoord wxDCBase::LogicalToDeviceY(wxCoord y) const
{
    return ((wxDC *)this)->YLOG2DEV(y);
}

wxCoord wxDCBase::LogicalToDeviceXRel(wxCoord x) const
{
    return ((wxDC *)this)->XLOG2DEVREL(x);
}

wxCoord wxDCBase::LogicalToDeviceYRel(wxCoord y) const
{
    return ((wxDC *)this)->YLOG2DEVREL(y);
}