]> git.saurik.com Git - wxWidgets.git/blobdiff - src/mac/carbon/dc.cpp
Used when the Apparence Manager is not installed
[wxWidgets.git] / src / mac / carbon / dc.cpp
index 642dc1edc56d18b4258eaf296c045fb90c39ffdd..fe34b61a97cd4adeb0fcaf30f15616bd93f630d5 100644 (file)
@@ -30,6 +30,8 @@ IMPLEMENT_ABSTRACT_CLASS(wxDC, wxObject)
 #define mm2pt                  2.83464566929
 #define pt2mm                  0.352777777778
 
+long wxDC::m_macCurrentPortId = 1 ;
+
 //-----------------------------------------------------------------------------
 // wxDC
 //-----------------------------------------------------------------------------
@@ -61,7 +63,7 @@ wxDC::wxDC(void)
   m_scaleX = 1.0;
   m_scaleY = 1.0;
   
-  m_mappingMode = MM_TEXT;
+  m_mappingMode = wxMM_TEXT;
   m_needComputeScaleX = FALSE;
   m_needComputeScaleY = FALSE;
   
@@ -83,14 +85,136 @@ wxDC::wxDC(void)
   m_backgroundBrush = *wxWHITE_BRUSH;
   
 //  m_palette = wxAPP_COLOURMAP;
+  m_macPort = NULL ;
+  m_ok = FALSE ;
+  
+       m_macFontInstalled = false ;
+       m_macBrushInstalled = false ;
+       m_macPenInstalled = false ;
+       
+       m_macPortId = 0 ;
+       m_macLocalOrigin.h = m_macLocalOrigin.v = 0 ;
+       m_macClipRect.left = -32000 ;
+       m_macClipRect.top = -32000 ;
+       m_macClipRect.right = 32000 ;
+       m_macClipRect.bottom = 32000 ;
+       ::GetPort( &m_macOrigPort ) ;
 };
 
 wxDC::~wxDC(void)
 {
+       if ( m_macPort )
+       {
+               ::SetOrigin( 0 , 0 ) ;
+               ::ClipRect( &m_macPort->portRect ) ;
+               ::PenNormal() ;
+               ::SetPort( m_macOrigPort ) ;
+       }
+       ++m_macCurrentPortId ;
 };
 
-void wxDC::DrawIcon( const wxIcon &WXUNUSED(icon), long WXUNUSED(x), long WXUNUSED(y), bool WXUNUSED(useMask) )
+void wxDC::MacSetupPort() const
+{
+       m_macPortId = ++m_macCurrentPortId ;
+       ::SetPort(m_macPort);
+       ::SetOrigin(-m_macLocalOrigin.h, -m_macLocalOrigin.v);
+       ::ClipRect(&m_macClipRect);
+
+       m_macFontInstalled = false ;
+       m_macBrushInstalled = false ;
+       m_macPenInstalled = false ;     
+}
+
+void wxDC::DrawBitmap( const wxBitmap &bmp, long x, long y, bool useMask )
+{
+  if (!Ok()) 
+       return;
+  MacVerifySetup() ;
+  
+  long xx1 = XLOG2DEV(x); 
+  long yy1 = YLOG2DEV(y);
+       
+       {
+               wxBitmapRefData * bmap = (wxBitmapRefData*) ( bmp.GetRefData()) ;
+               
+       if ( bmap )
+    {
+                       if ( bmap->m_bitmapType == kMacBitmapTypePict )
+                       { 
+               Rect bitmaprect = { 0 , 0 , bmap->m_height , bmap->m_width } ;
+                               ::OffsetRect( &bitmaprect , xx1 , yy1 ) ;
+                               ::DrawPicture( bmap->m_hPict , &bitmaprect ) ;
+                       }
+                       else if ( bmap->m_bitmapType == kMacBitmapTypeGrafWorld )
+                       {
+                               if ( bmap->m_hBitmap )
+                               {
+                                       GWorldPtr               bmapworld = bmap->m_hBitmap ;
+                                       PixMapHandle    bmappixels ;
+                                       RGBColor                white = { 0xFFFF, 0xFFFF,0xFFFF} ;
+                                       RGBColor                black = { 0,0,0} ;
+                                       RGBForeColor( &black ) ;
+                                       RGBBackColor( &white ) ;
+                       //              RGBForeColor( &m_textForegroundColour.GetPixel() ) ;
+                       //              RGBBackColor( &m_textBackgroundColour.GetPixel() ) ;
+                       
+                                       bmappixels = GetGWorldPixMap( bmapworld ) ;
+                                       if ( LockPixels(bmappixels) )
+                                       {
+                                               Rect source , dest ;
+                                               source.top = 0 ;
+                                               source.left = 0 ;
+                                               source.right = bmap->m_width ;
+                                               source.bottom = bmap->m_height ;
+                                               dest.top = YLOG2DEV(y) ;
+                                               dest.left = XLOG2DEV(x) ;
+                                               dest.bottom = YLOG2DEV(y + bmap->m_height )  ;
+                                               dest.right = XLOG2DEV(x + bmap->m_width ) ;
+                                               // ::ClipRect(&m_macClipRect);
+                                               CopyBits( &GrafPtr( bmapworld )->portBits , &GrafPtr( m_macPort )->portBits ,
+                                                       &source, &dest, srcCopy, NULL ) ;
+                                               /*
+                                               if ( m_clipping )
+                                               {
+                                                       long x1 = XLOG2DEV(m_clipX1);
+                                                       long y1 = YLOG2DEV(m_clipY1);
+                                                       long x2 = XLOG2DEV(m_clipX2);
+                                                       long y2 = YLOG2DEV(m_clipY2);
+       
+                                                       Rect clip = { y1 , x1 , y2 , x2 } ;
+                                                       ::ClipRect(&clip);
+                                               }
+                                               */
+                                               UnlockPixels( bmappixels ) ;
+                                       } 
+                                       m_macPenInstalled = false ;
+                                       m_macBrushInstalled = false ;
+                                       m_macFontInstalled = false ;
+                               }
+                       }
+    }
+       }
+}
+
+void wxDC::DrawIcon( const wxIcon &icon, long x, long y, bool useMask )
 {
+  if (!Ok()) 
+       return;
+  MacVerifySetup() ;
+  
+  long xx1 = XLOG2DEV(x); 
+  long yy1 = YLOG2DEV(y);
+       
+       {
+               wxIconRefData * iconref = (wxIconRefData*) ( icon.GetRefData()) ;
+               
+       if ( iconref && iconref->m_ok && iconref->m_hIcon )
+    {
+       Rect bitmaprect = { 0 , 0 , iconref->m_height , iconref->m_width } ;
+                       OffsetRect( &bitmaprect , xx1 , yy1 ) ;
+       PlotCIconHandle( &bitmaprect , atNone , ttNone , iconref->m_hIcon ) ;
+    }
+       }
 };
 
 void wxDC::DrawPoint( wxPoint& point ) 
@@ -155,16 +279,41 @@ void wxDC::DrawSpline( int n, wxPoint points[] )
 
 void wxDC::SetClippingRegion( long x, long y, long width, long height )
 {
-  m_clipping = TRUE;
-  m_clipX1 = x;
-  m_clipY1 = y;
-  m_clipX2 = x + width;
-  m_clipY2 = y + height;
+  MacVerifySetup() ;
+       if( m_clipping )
+       {
+               m_clipX1 = wxMax( m_clipX1 , x ) ;
+               m_clipY1 = wxMax( m_clipY1 ,y );
+               m_clipX2 = wxMin( m_clipX2, (x + width));
+               m_clipY2 = wxMin( m_clipY2,(y + height));
+               
+       }
+       else
+       {
+         m_clipping = TRUE;
+         m_clipX1 = x;
+         m_clipY1 = y;
+         m_clipX2 = x + width;
+         m_clipY2 = y + height;
+       }
+  
+       long x1 = XLOG2DEV(m_clipX1);
+       long y1 = YLOG2DEV(m_clipY1);
+       long x2 = XLOG2DEV(m_clipX2);
+       long y2 = YLOG2DEV(m_clipY2);
+       
+       Rect clip = { y1 , x1 , y2 , x2 } ;
+       
+  ::ClipRect( &clip ) ;
+
 };
 
 void wxDC::DestroyClippingRegion(void)
 {
+  MacVerifySetup() ;
   m_clipping = FALSE;
+//     Rect clip = { -32000 , -32000 , 32000 , 32000 } ;
+       ::ClipRect(&m_macClipRect);
 };
 
 void wxDC::GetClippingBox( long *x, long *y, long *width, long *height ) const
@@ -199,36 +348,38 @@ void wxDC::SetTextForeground( const wxColour &col )
 {
   if (!Ok()) return;
   m_textForegroundColour = col;
+  m_macFontInstalled = false ;
 };
 
 void wxDC::SetTextBackground( const wxColour &col )
 {
   if (!Ok()) return;
   m_textBackgroundColour = col;
+  m_macFontInstalled = false ;
 };
 
 void wxDC::SetMapMode( int mode )
 {
   switch (mode) 
   {
-    case MM_TWIPS:
+    case wxMM_TWIPS:
       SetLogicalScale( twips2mm*m_mm_to_pix_x, twips2mm*m_mm_to_pix_y );
       break;
-    case MM_POINTS:
+    case wxMM_POINTS:
       SetLogicalScale( pt2mm*m_mm_to_pix_x, pt2mm*m_mm_to_pix_y );
       break;
-    case MM_METRIC:
+    case wxMM_METRIC:
       SetLogicalScale( m_mm_to_pix_x, m_mm_to_pix_y );
       break;
-    case MM_LOMETRIC:
+    case wxMM_LOMETRIC:
       SetLogicalScale( m_mm_to_pix_x/10.0, m_mm_to_pix_y/10.0 );
       break;
     default:
-    case MM_TEXT:
+    case wxMM_TEXT:
       SetLogicalScale( 1.0, 1.0 );
       break;
   };
-  if (mode != MM_TEXT)
+  if (mode != wxMM_TEXT)
   {
     m_needComputeScaleX = TRUE;
     m_needComputeScaleY = TRUE;
@@ -383,3 +534,1044 @@ void wxDC::ComputeScaleAndOrigin(void)
   }
 };
 
+void  wxDC::SetPalette( const wxPalette& palette )
+{
+}
+
+void  wxDC::SetBackgroundMode( int mode )
+{
+       m_backgroundMode = mode ;
+}
+
+void  wxDC::SetFont( const wxFont &font )
+{
+  if (!Ok()) 
+       return;
+       
+  MacVerifySetup() ;
+  
+  m_font = font;
+  m_macFontInstalled = false ;
+}
+
+void  wxDC::SetPen( const wxPen &pen )
+{
+  if (!Ok()  ) 
+       return;
+
+  MacVerifySetup() ;
+
+       if ( m_pen == pen )
+               return ;
+               
+  m_pen = pen;
+/*  
+  if (!m_pen.Ok()) 
+       return;
+*/     
+  m_macPenInstalled = false ;
+}
+
+void  wxDC::SetBrush( const wxBrush &brush )
+{
+  if (!Ok() ) 
+       return;
+  MacVerifySetup() ;
+  
+  if (m_brush == brush) 
+       return;
+  
+  m_brush = brush;
+  m_macBrushInstalled = false ;
+}
+
+void  wxDC::SetBackground( const wxBrush &brush )
+{
+  if (!Ok()) 
+       return;
+  MacVerifySetup() ;
+  
+  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 ;
+}
+
+void  wxDC::FloodFill( long x1, long y1, const wxColour& col, int style )
+{
+}
+
+bool  wxDC::GetPixel( long x1, long y1, wxColour *col ) const 
+{
+       return true ;
+}
+
+void  wxDC::DrawLine( long x1, long y1, long x2, long y2 )
+{
+  if (!Ok()) 
+       return;
+       
+  MacVerifySetup() ;
+  
+  if (m_pen.GetStyle() != wxTRANSPARENT)
+  {
+               MacInstallPen() ;
+               int offset = (m_pen.GetWidth()  - 1) / 2 ;      
+       long xx1 = XLOG2DEV(x1); 
+       long yy1 = YLOG2DEV(y1);
+       long xx2 = XLOG2DEV(x2); 
+       long yy2 = YLOG2DEV(y2);
+       
+               ::MoveTo(xx1 - offset ,yy1 - offset);
+               ::LineTo(xx2 - offset , yy2 - offset );
+  };
+}
+
+void  wxDC::CrossHair( long x, long y )
+{
+}
+
+void  wxDC::DrawArc( long x1, long y1, long x2, long y2, long xc, long yc )
+{
+}
+
+void  wxDC::DrawEllipticArc( long x, long y, long width, long height, double sa, double ea )
+{
+}
+
+void  wxDC::DrawPoint( long x, long y )
+{
+  if (!Ok()) 
+       return;
+       
+  MacVerifySetup() ;
+  
+  if (m_pen.GetStyle() != wxTRANSPARENT) 
+  {
+               MacInstallPen() ;
+       long xx1 = XLOG2DEV(x); 
+       long yy1 = YLOG2DEV(y);
+       
+               ::MoveTo(xx1,yy1);
+               ::LineTo(xx1+1, yy1+1);
+  };
+}
+
+void  wxDC::DrawLines( int n, wxPoint points[], long xoffset , long yoffset  )
+{
+  if (!Ok()) 
+       return;
+  MacVerifySetup() ;
+  
+  if (m_pen.GetStyle() == wxTRANSPARENT) 
+       return;
+
+       MacInstallPen() ;
+  
+       int offset = (m_pen.GetWidth()  - 1 ) / 2 ;     
+  long x1, x2 , y1 , y2 ;
+  x1 = XLOG2DEV(points[0].x + xoffset);
+       y1 = YLOG2DEV(points[0].y + yoffset);   
+       ::MoveTo(x1 - offset ,y1 - offset );
+  
+  for (int i = 0; i < n-1; i++)
+  {
+    long x2 = XLOG2DEV(points[i+1].x + xoffset);
+    long y2 = YLOG2DEV(points[i+1].y + yoffset);
+               ::LineTo(x2 - offset  , y2 - offset );
+  }
+}
+
+void  wxDC::DrawPolygon( int n, wxPoint points[], long xoffset , long yoffset , 
+                              int fillStyle )
+{
+  if (!Ok()) 
+       return;
+  MacVerifySetup() ;
+  
+  PolyHandle polygon = OpenPoly() ;
+  long x1, x2 , y1 , y2 ;
+  x1 = XLOG2DEV(points[0].x + xoffset);
+       y1 = YLOG2DEV(points[0].y + yoffset);   
+       ::MoveTo(x1,y1);
+  
+  for (int i = 0; i < n-1; i++)
+  {
+    long x2 = XLOG2DEV(points[i+1].x + xoffset);
+    long y2 = YLOG2DEV(points[i+1].y + yoffset);
+               ::LineTo(x2, y2);
+  }
+
+  ClosePoly() ;
+       if (m_brush.GetStyle() != wxTRANSPARENT) 
+       {
+               MacInstallBrush() ;
+               ::PaintPoly( polygon ) ;
+       };
+       
+       if (m_pen.GetStyle() != wxTRANSPARENT) 
+       {
+               MacInstallPen() ;
+               ::FramePoly( polygon ) ;
+       };
+  KillPoly( polygon ) ;
+}
+
+void  wxDC::DrawRectangle( long x, long y, long width, long height )
+{
+  if (!Ok()) 
+       return;
+  MacVerifySetup() ;
+       
+       long xx = XLOG2DEV(x);
+       long yy = YLOG2DEV(y);
+       long ww = m_signX * XLOG2DEVREL(width);
+       long 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::DrawRoundedRectangle( long x, long y, long width, long height, double radius  )
+{
+  if (!Ok()) 
+       return;
+  MacVerifySetup() ;
+       
+  if (radius < 0.0) 
+       radius = - radius * ((width < height) ? width : height);
+       
+       long xx = XLOG2DEV(x);
+       long yy = YLOG2DEV(y);
+       long ww = m_signX * XLOG2DEVREL(width);
+       long 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 , radius * 2 , radius * 2 ) ;
+       };
+       
+       if (m_pen.GetStyle() != wxTRANSPARENT) 
+       {
+               MacInstallPen() ;
+               ::FrameRoundRect( &rect , radius * 2 , radius * 2 ) ;
+       };
+}
+
+void  wxDC::DrawEllipse( long x, long y, long width, long height )
+{
+  if (!Ok()) 
+       return;
+  MacVerifySetup() ;
+
+       long xx = XLOG2DEV(x);
+       long yy = YLOG2DEV(y);
+       long ww = m_signX * XLOG2DEVREL(width);
+       long 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 ) ;
+       };
+}
+
+// ----------------------------------- spline code ----------------------------------------
+
+static void wx_quadratic_spline(double a1, double b1, double a2, double b2,
+                         double a3, double b3, double a4, double b4);
+static void wx_clear_stack(void);
+static int wx_spline_pop(double *x1, double *y1, double *x2, double *y2, double *x3,
+        double *y3, double *x4, double *y4);
+static 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(wxDC *dc);
+
+static wxList wx_spline_point_list;
+
+#define                half(z1, z2)    ((z1+z2)/2.0)
+#define                THRESHOLD       5
+
+/* iterative version */
+
+static 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;
+
+static void wx_clear_stack(void)
+{
+    wx_stack_top = wx_spline_stack;
+    wx_stack_count = 0;
+}
+
+static 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++;
+}
+
+static 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 );
+  wxNode *node = wx_spline_point_list.First();
+  while (node)
+  {
+    wxPoint *point = (wxPoint *)node->Data();
+    delete point;
+    delete node;
+    node = wx_spline_point_list.First();
+  }
+}
+
+void  wxDC::DrawSpline( wxList *points )
+{
+    wxPoint *p;
+    double           cx1, cy1, cx2, cy2, cx3, cy3, cx4, cy4;
+    double           x1, y1, x2, y2;
+
+    wxNode *node = points->First();
+    p = (wxPoint *)node->Data();
+
+    x1 = p->x;
+    y1 = p->y;
+
+    node = node->Next();
+    p = (wxPoint *)node->Data();
+
+    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->Next()) != NULL)
+    {
+        p = (wxPoint *)node->Data();
+       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( this );
+}
+
+
+    
+bool  wxDC::CanDrawBitmap(void) const 
+{
+       return true ;
+}
+
+
+bool  wxDC::Blit( long xdest, long ydest, long width, long height,
+       wxDC *source, long xsrc, long ysrc, int logical_func , bool useMask )
+{
+  if (!Ok()) return FALSE;
+  MacVerifySetup() ;
+
+       CGrafPtr                        sourcePort = (CGrafPtr) source->m_macPort ;
+       PixMapHandle    bmappixels =  GetGWorldPixMap( sourcePort ) ; 
+       RGBColor                white = { 0xFFFF, 0xFFFF,0xFFFF} ;
+       RGBColor                black = { 0,0,0} ;
+//             RGBForeColor( &black ) ;
+//             RGBBackColor( &white ) ;
+               RGBForeColor( &m_textForegroundColour.GetPixel() ) ;
+               RGBBackColor( &m_textBackgroundColour.GetPixel() ) ;
+
+       if ( LockPixels(bmappixels) )
+       {
+               Rect srcrect , dstrect ;
+               srcrect.top = source->YLOG2DEV(ysrc) ;
+               srcrect.left = source->XLOG2DEV(xsrc) ;
+               srcrect.right = source->XLOG2DEV(xsrc + width ) ;
+               srcrect.bottom = source->YLOG2DEV(ysrc + height) ;
+               dstrect.top = YLOG2DEV(ydest) ;
+               dstrect.left = XLOG2DEV(xdest) ;
+               dstrect.bottom = YLOG2DEV(ydest + height )  ;
+               dstrect.right = XLOG2DEV(xdest + width ) ;
+//             ::ClipRect(&m_macClipRect);
+               CopyBits( &GrafPtr( sourcePort )->portBits , &GrafPtr( m_macPort )->portBits ,
+                       &srcrect, &dstrect, srcCopy, NULL ) ;
+/*
+                                               if ( m_clipping )
+                                               {
+                                                       long x1 = XLOG2DEV(m_clipX1);
+                                                       long y1 = YLOG2DEV(m_clipY1);
+                                                       long x2 = XLOG2DEV(m_clipX2);
+                                                       long y2 = YLOG2DEV(m_clipY2);
+       
+                                                       Rect clip = { y1 , x1 , y2 , x2 } ;
+                                                       ::ClipRect(&clip);
+                                               }
+*/
+               UnlockPixels( bmappixels ) ;
+       } 
+       
+       m_macPenInstalled = false ;
+       m_macBrushInstalled = false ;
+       m_macFontInstalled = false ;
+       
+  return TRUE;
+}
+
+void  wxDC::DrawText( const wxString &string, long x, long y, bool use16)
+{
+  if (!Ok()) 
+       return;
+  MacVerifySetup() ;
+
+       long xx = XLOG2DEV(x);
+       long yy = YLOG2DEV(y);
+  
+//     if (m_pen.GetStyle() != wxTRANSPARENT)
+       {
+               MacInstallFont() ;
+               /*
+               Rect clip = { -32000 , -32000 , 32000 , 32000 } ;
+                       
+                 ::ClipRect( &clip ) ;
+               */
+               
+               FontInfo fi ;
+               ::GetFontInfo( &fi ) ;
+               
+               yy += fi.ascent ;
+               ::MoveTo( xx , yy );
+               if (  m_backgroundMode == wxTRANSPARENT )
+               {
+                       ::TextMode( srcOr) ;
+               }
+               else
+               {
+                       ::TextMode( srcCopy ) ;
+               }
+
+               const char *text = NULL ;
+               int length = 0 ;
+               wxString macText ;
+
+               if ( wxApp::s_macDefaultEncodingIsPC )
+               {
+                       macText = wxMacMakeMacStringFromPC( string ) ;
+                       text = macText ;
+                       length = macText.Length() ;
+               }
+               else
+               {
+                       text = string ;
+                       length = string.Length() ;
+               }
+               
+               int laststop = 0 ;
+               int i = 0 ;
+               int line = 0 ;
+               
+               while( i < length )
+               {
+                       if( text[i] == 13 || text[i] == 10)
+                       {
+                               ::DrawText( text , laststop , i - laststop ) ;
+                               line++ ;
+                               ::MoveTo( xx , yy + line*(fi.descent + fi.ascent + fi.leading) );
+                               laststop = i+1 ;
+                       }
+                       i++ ;
+               }
+                               
+               ::DrawText( text , laststop , i - laststop ) ;
+               ::TextMode( srcOr ) ;
+       }
+}
+
+bool  wxDC::CanGetTextExtent(void) const 
+{
+       if ( !Ok() )
+               return false  ;
+               
+       return true ;
+}
+
+void  wxDC::GetTextExtent( const wxString &string, long *width, long *height,
+                     long *descent, long *externalLeading ,
+                     wxFont *theFont , bool use16  ) const
+{
+  if (!Ok()) 
+       return;
+   MacVerifySetup() ;
+
+       wxFont formerFont = m_font ; 
+       
+       if ( theFont )
+       {
+               wxFontRefData * font = (wxFontRefData*) m_font.GetRefData() ;
+       
+               if ( font )
+               {
+               long yy1 = YLOG2DEV(0);
+                       long yy2 = YLOG2DEV(font->m_macFontSize);
+       
+                       ::TextFont( font->m_macFontNum ) ;
+                       ::TextSize( abs( yy2-yy1) ) ;
+                       ::TextFace( font->m_macFontStyle ) ;
+               }
+       }
+       else
+       {
+               MacInstallFont() ;
+       }
+
+       FontInfo fi ;
+       ::GetFontInfo( &fi ) ;
+
+       *height = fi.descent + fi.ascent ;
+       *descent = fi.descent ;
+       *externalLeading = fi.leading ;
+       
+       const char *text = NULL ;
+       int length = 0 ;
+       wxString macText ;
+       if ( wxApp::s_macDefaultEncodingIsPC )
+       {
+               macText = wxMacMakeMacStringFromPC( string ) ;
+               text = macText ;
+               length = macText.Length() ;
+       }
+       else
+       {
+               text = string ;
+               length = string.Length() ;
+       }
+       
+       int laststop = 0 ;
+       int i = 0 ;
+       int curwidth = 0 ;
+       *width = 0 ;
+       
+       while( i < length )
+       {
+               if( text[i] == 13 || text[i] == 10)
+               {
+                       *height += fi.descent + fi.ascent + fi.leading;
+                       curwidth = ::TextWidth( text , laststop , i - laststop ) ;
+                       if ( curwidth > *width )
+                               *width = curwidth ;
+                       laststop = i+1 ;
+               }
+               i++ ;
+       }
+                       
+       curwidth = ::TextWidth( text , laststop , i - laststop ) ;
+       if ( curwidth > *width )
+               *width = curwidth ;
+
+       if ( theFont )
+       {
+               m_macFontInstalled = false ;
+       }
+}
+
+long   wxDC::GetCharWidth(void)
+{
+  if (!Ok()) 
+       return 1;
+   MacVerifySetup() ;
+
+       MacInstallFont() ;
+
+       FontInfo fi ;
+       ::GetFontInfo( &fi ) ;
+
+       return (fi.descent + fi.ascent) / 2 ;
+}
+
+long   wxDC::GetCharHeight(void)
+{
+  if (!Ok()) 
+       return 1;
+   MacVerifySetup() ;
+
+       MacInstallFont() ;
+
+       FontInfo fi ;
+       ::GetFontInfo( &fi ) ;
+
+       return fi.descent + fi.ascent ;
+}
+
+void  wxDC::Clear(void)
+{
+  if (!Ok()) 
+       return;
+  MacVerifySetup() ;
+       Rect rect = { -32767 , -32767 , 32767 , 32767 } ;
+       
+       if (m_backgroundBrush.GetStyle() != wxTRANSPARENT) 
+       {
+               MacInstallBrush() ;
+               ::EraseRect( &rect ) ;
+       };
+}
+
+void wxDC::MacInstallFont() const
+{
+  if (!Ok()) 
+       return;
+  MacVerifySetup() ;
+
+       if ( m_macFontInstalled )
+               return ;
+               
+       wxFontRefData * font = (wxFontRefData*) m_font.GetRefData() ;
+
+       if ( font )
+       {
+               ::TextFont( font->m_macFontNum ) ;
+               ::TextSize( m_scaleY * font->m_macFontSize ) ;
+               ::TextFace( font->m_macFontStyle ) ;
+       
+               m_macFontInstalled = true ;
+               m_macBrushInstalled = false ;
+               m_macPenInstalled = false ;
+       
+               ::RGBForeColor(&m_textForegroundColour.GetPixel() );
+               ::RGBBackColor(&m_textBackgroundColour.GetPixel() );
+       }
+       else
+       {
+               short fontnum ;
+               
+               GetFNum( "\pGeneva" , &fontnum ) ;
+               ::TextFont( fontnum ) ;
+               ::TextSize( m_scaleY * 10 ) ;
+               ::TextFace( 0 ) ;
+       
+               // todo reset after spacing changes - or store the current spacing somewhere
+       
+               m_macFontInstalled = true ;
+               m_macBrushInstalled = false ;
+               m_macPenInstalled = false ;
+               ::RGBForeColor( &(m_textForegroundColour.GetPixel()) );
+               ::RGBBackColor(&m_textBackgroundColour.GetPixel() );
+       }
+
+
+       short mode = patCopy ;
+
+       // todo :
+       
+       switch( m_logicalFunction )
+       {
+               case wxCOPY:       // src
+                       mode = patCopy ;
+                       break ;
+               case wxINVERT:     // NOT dst
+                       ::PenPat(&qd.black);
+                       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 ;
+
+               // unsupported TODO
+
+               case wxCLEAR:      // 0
+               case wxAND_REVERSE:// src AND (NOT dst)
+               case wxAND:        // src AND 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 ) ;
+}
+
+static void wxMacGetHatchPattern(int hatchStyle, Pattern *pattern)
+{
+       int thePatListID = sysPatListID;
+       int theIndex;
+       switch(hatchStyle)
+       {
+               case wxBDIAGONAL_HATCH:
+                       theIndex = 34; // WCH: this is not good
+                       break;
+               case wxFDIAGONAL_HATCH:
+                       theIndex = 26;
+                       break;
+               case wxCROSS_HATCH:
+                       theIndex = 5;
+                       break;
+               case wxHORIZONTAL_HATCH:
+                       theIndex = 25;
+                       break;
+               case wxVERTICAL_HATCH:
+                       theIndex = 6;
+                       break;
+               case wxCROSSDIAG_HATCH:
+                       theIndex = 4; // WCH: this is not good
+                       break;
+               default:
+                       theIndex = 1; // solid pattern
+                       break;
+       }
+       GetIndPattern( pattern, thePatListID, theIndex);        
+}
+
+void wxDC::MacInstallPen() const
+{
+  if (!Ok()) 
+       return;
+  MacVerifySetup() ;
+
+       if ( m_macPenInstalled )
+               return ;
+
+       ::RGBForeColor(&m_pen.GetColour().GetPixel() );
+       ::RGBBackColor(&m_backgroundBrush.GetColour().GetPixel() );
+       
+       ::PenNormal() ;
+       int penWidth = m_pen.GetWidth();
+       ::PenSize(penWidth, penWidth);
+
+       int penStyle = m_pen.GetStyle();
+       
+       if (penStyle == wxSOLID)
+               ::PenPat(&qd.black);
+       else if (IS_HATCH(penStyle))
+       {
+               Pattern pat ;
+               wxMacGetHatchPattern(penStyle, &pat);
+               ::PenPat(&pat);
+       }
+       else
+       {
+               ::PenPat(&qd.black);
+       }
+
+       short mode = patCopy ;
+       
+       // todo :
+       
+       switch( m_logicalFunction )
+       {
+               case wxCOPY:       // src
+                       mode = patCopy ;
+                       break ;
+               case wxINVERT:     // NOT dst
+                       ::PenPat(&qd.black);
+                       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 ;
+
+               // unsupported TODO
+
+               case wxCLEAR:      // 0
+               case wxAND_REVERSE:// src AND (NOT dst)
+               case wxAND:        // src AND 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::MacInstallBrush() const
+{
+  if (!Ok()) 
+       return;
+  MacVerifySetup() ;
+
+       if ( m_macBrushInstalled )
+               return ;
+
+       // foreground
+
+       ::RGBForeColor(&m_brush.GetColour().GetPixel() );
+       ::RGBBackColor(&m_backgroundBrush.GetColour().GetPixel() );
+
+       int brushStyle = m_brush.GetStyle();
+       if (brushStyle == wxSOLID)
+               ::PenPat(&qd.black);
+       else if (IS_HATCH(brushStyle))
+       {
+               Pattern pat ;
+               wxMacGetHatchPattern(brushStyle, &pat);
+               ::PenPat(&pat);
+       }
+       else
+       {
+               ::PenPat(&qd.black);
+       }
+
+       
+       // background
+       
+       brushStyle = m_backgroundBrush.GetStyle();
+       if (brushStyle == wxSOLID)
+               ::BackPat(&qd.white);
+       else if (IS_HATCH(brushStyle))
+       {
+               Pattern pat ;
+               wxMacGetHatchPattern(brushStyle, &pat);
+               ::BackPat(&pat);
+       }
+       else
+       {
+               ::BackPat(&qd.white);
+       }
+       
+       short mode = patCopy ;
+
+       // todo :
+       
+       switch( m_logicalFunction )
+       {
+               case wxCOPY:       // src
+                       mode = patCopy ;
+                       break ;
+               case wxINVERT:     // NOT dst
+                       ::PenPat(&qd.black);
+                       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 ;
+
+               // unsupported TODO
+
+               case wxCLEAR:      // 0
+               case wxAND_REVERSE:// src AND (NOT dst)
+               case wxAND:        // src AND 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 ;
+}
+
+