Fix history in wxWebViewIE when using a custom file scheme.

[wxWidgets.git] / src / osx / carbon / graphics.cpp

diff --git a/src/osx/carbon/graphics.cpp b/src/osx/carbon/graphics.cpp
index 416880038a46f015172b04ed6314e496d15348a9..4b1df9cdca5ade5d27a2ca9f2b4dc01a902c7372 100644 (file)
--- a/src/osx/carbon/graphics.cpp
+++ b/src/osx/carbon/graphics.cpp
@@ -1,11 +1,11 @@
 /////////////////////////////////////////////////////////////////////////////
 /////////////////////////////////////////////////////////////////////////////

-// Name:        src/osx/carbon/dccg.cpp
+// Name:        src/osx/carbon/graphics.cpp

 // Purpose:     wxDC class
 // Author:      Stefan Csomor
 // Modified by:
 // Created:     01/02/97
 // RCS-ID:      $Id$
 // Purpose:     wxDC class
 // Author:      Stefan Csomor
 // Modified by:
 // Created:     01/02/97
 // RCS-ID:      $Id$

-// Copyright:   (c) Stefan Csomor
+// copyright:   (c) Stefan Csomor

 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 


@@ -39,12 +39,7 @@
     #include "wx/osx/dcprint.h"
     #include "wx/osx/dcclient.h"
     #include "wx/osx/dcmemory.h"
     #include "wx/osx/dcprint.h"
     #include "wx/osx/dcclient.h"
     #include "wx/osx/dcmemory.h"

-#if wxOSX_USE_CARBON
-#include "wx/osx/uma.h"
-#else
-#include "wx/osx/private.h"
-#endif
-
+    #include "wx/osx/private.h"

 #else
     #include "CoreServices/CoreServices.h"
     #include "ApplicationServices/ApplicationServices.h"
 #else
     #include "CoreServices/CoreServices.h"
     #include "ApplicationServices/ApplicationServices.h"


@@ -77,11 +72,42 @@ int UMAGetSystemVersion()
 #endif
 
 #if wxOSX_USE_COCOA_OR_IPHONE
 #endif
 
 #if wxOSX_USE_COCOA_OR_IPHONE

-extern CGContextRef wxOSXGetContextFromCurrentNSContext() ;
-extern void wxOSXLockFocus( WXWidget view) ;
+extern CGContextRef wxOSXGetContextFromCurrentContext() ;
+#if wxOSX_USE_COCOA
+extern bool wxOSXLockFocus( WXWidget view) ;

 extern void wxOSXUnlockFocus( WXWidget view) ;
 #endif
 extern void wxOSXUnlockFocus( WXWidget view) ;
 #endif

+#endif
+
+#if 1 // MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_5
+
+// TODO test whether this private API also works under 10.3

 
 

+// copying values from NSCompositingModes (see also webkit and cairo sources)
+
+typedef enum CGCompositeOperation {
+   kCGCompositeOperationClear           = 0,
+   kCGCompositeOperationCopy            = 1,
+   kCGCompositeOperationSourceOver      = 2,
+   kCGCompositeOperationSourceIn        = 3,
+   kCGCompositeOperationSourceOut       = 4,
+   kCGCompositeOperationSourceAtop      = 5,
+   kCGCompositeOperationDestinationOver = 6,
+   kCGCompositeOperationDestinationIn   = 7,
+   kCGCompositeOperationDestinationOut  = 8,
+   kCGCompositeOperationDestinationAtop = 9,
+   kCGCompositeOperationXOR             = 10,
+   kCGCompositeOperationPlusDarker      = 11,
+// NS only, unsupported by CG : Highlight
+   kCGCompositeOperationPlusLighter     = 12
+} CGCompositeOperation ;
+
+extern "C"
+{
+   CG_EXTERN void CGContextSetCompositeOperation (CGContextRef context, int operation);
+} ;
+
+#endif

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


@@ -147,7 +173,7 @@ CGColorRef wxMacCreateCGColor( const wxColour& col )
 CTFontRef wxMacCreateCTFont( const wxFont& font )
 {
 #ifdef __WXMAC__
 CTFontRef wxMacCreateCTFont( const wxFont& font )
 {
 #ifdef __WXMAC__

-    return wxCFRetain((CTFontRef) font.MacGetCTFont());
+    return wxCFRetain((CTFontRef) font.OSXGetCTFont());

 #else
     return CTFontCreateWithName( wxCFStringRef( font.GetFaceName(), wxLocale::GetSystemEncoding() ) , font.GetPointSize() , NULL );
 #endif
 #else
     return CTFontCreateWithName( wxCFStringRef( font.GetFaceName(), wxLocale::GetSystemEncoding() ) , font.GetPointSize() , NULL );
 #endif


@@ -199,7 +225,7 @@ class ImagePattern : public wxMacCoreGraphicsPattern
 public :
     ImagePattern( const wxBitmap* bmp , const CGAffineTransform& transform )
     {
 public :
     ImagePattern( const wxBitmap* bmp , const CGAffineTransform& transform )
     {

-        wxASSERT( bmp && bmp->Ok() );
+        wxASSERT( bmp && bmp->IsOk() );

 #ifdef __WXMAC__
         Init( (CGImageRef) bmp->CreateCGImage() , transform );
 #endif
 #ifdef __WXMAC__
         Init( (CGImageRef) bmp->CreateCGImage() , transform );
 #endif


@@ -427,32 +453,32 @@ wxMacCoreGraphicsPenData::wxMacCoreGraphicsPenData( wxGraphicsRenderer* renderer
 
     switch ( pen.GetStyle() )
     {
 
     switch ( pen.GetStyle() )
     {

-        case wxSOLID :
+        case wxPENSTYLE_SOLID:

             break;
 
             break;
 

-        case wxDOT :
+        case wxPENSTYLE_DOT:

             m_count = WXSIZEOF(dotted);
             m_userLengths = new CGFloat[ m_count ] ;
             memcpy( m_userLengths, dotted, sizeof(dotted) );
             m_lengths = m_userLengths;
             break;
 
             m_count = WXSIZEOF(dotted);
             m_userLengths = new CGFloat[ m_count ] ;
             memcpy( m_userLengths, dotted, sizeof(dotted) );
             m_lengths = m_userLengths;
             break;
 

-        case wxLONG_DASH :
+        case wxPENSTYLE_LONG_DASH:

             m_count = WXSIZEOF(dashed);
             m_lengths = dashed;
             break;
 
             m_count = WXSIZEOF(dashed);
             m_lengths = dashed;
             break;
 

-        case wxSHORT_DASH :
+        case wxPENSTYLE_SHORT_DASH:

             m_count = WXSIZEOF(short_dashed);
             m_lengths = short_dashed;
             break;
 
             m_count = WXSIZEOF(short_dashed);
             m_lengths = short_dashed;
             break;
 

-        case wxDOT_DASH :
+        case wxPENSTYLE_DOT_DASH:

             m_count = WXSIZEOF(dotted_dashed);
             m_lengths = dotted_dashed;
             break;
 
             m_count = WXSIZEOF(dotted_dashed);
             m_lengths = dotted_dashed;
             break;
 

-        case wxUSER_DASH :
+        case wxPENSTYLE_USER_DASH:

             wxDash *dashes;
             m_count = pen.GetDashes( &dashes );
             if ((dashes != NULL) && (m_count > 0))
             wxDash *dashes;
             m_count = pen.GetDashes( &dashes );
             if ((dashes != NULL) && (m_count > 0))


@@ -471,10 +497,10 @@ wxMacCoreGraphicsPenData::wxMacCoreGraphicsPenData( wxGraphicsRenderer* renderer
             m_lengths = m_userLengths;
             break;
 
             m_lengths = m_userLengths;
             break;
 

-        case wxSTIPPLE :
+        case wxPENSTYLE_STIPPLE:

             {
                 wxBitmap* bmp = pen.GetStipple();
             {
                 wxBitmap* bmp = pen.GetStipple();

-                if ( bmp && bmp->Ok() )
+                if ( bmp && bmp->IsOk() )

                 {
                     m_colorSpace.reset( CGColorSpaceCreatePattern( NULL ) );
                     m_pattern.reset( (CGPatternRef) *( new ImagePattern( bmp , CGAffineTransformMakeScale( 1,-1 ) ) ) );
                 {
                     m_colorSpace.reset( CGColorSpaceCreatePattern( NULL ) );
                     m_pattern.reset( (CGPatternRef) *( new ImagePattern( bmp , CGAffineTransformMakeScale( 1,-1 ) ) ) );


@@ -539,12 +565,7 @@ void wxMacCoreGraphicsPenData::Apply( wxGraphicsContext* context )
     }
     else
     {
     }
     else
     {

-        if ( context->GetLogicalFunction() == wxINVERT || context->GetLogicalFunction() == wxXOR )
-        {
-            CGContextSetRGBStrokeColor( cg , (CGFloat) 1.0,(CGFloat)  1.0 , (CGFloat) 1.0, (CGFloat) 1.0 );
-        }
-        else
-            CGContextSetStrokeColorWithColor( cg , m_color );
+        CGContextSetStrokeColorWithColor( cg , m_color );

     }
 }
 
     }
 }
 


@@ -552,20 +573,6 @@ void wxMacCoreGraphicsPenData::Apply( wxGraphicsContext* context )
 // Brush
 //
 
 // Brush
 //
 

-static const char *gs_stripedback_xpm[] = {
-/* columns rows colors chars-per-pixel */
-"4 4 2 1",
-". c #F0F0F0",
-"X c #ECECEC",
-/* pixels */
-"....",
-"....",
-"XXXX",
-"XXXX"
-};
-
-wxBitmap gs_stripedback_bmp( wxImage( (const char* const* ) gs_stripedback_xpm  ), -1 ) ;
-

 // make sure we all use one class for all conversions from wx to native colour
 
 class wxMacCoreGraphicsColour
 // make sure we all use one class for all conversions from wx to native colour
 
 class wxMacCoreGraphicsColour


@@ -640,7 +647,7 @@ wxMacCoreGraphicsColour::wxMacCoreGraphicsColour( const wxBrush &brush )
     {
         // now brush is a bitmap
         wxBitmap* bmp = brush.GetStipple();
     {
         // now brush is a bitmap
         wxBitmap* bmp = brush.GetStipple();

-        if ( bmp && bmp->Ok() )
+        if ( bmp && bmp->IsOk() )

         {
             m_isPattern = true;
             m_patternColorComponents = new CGFloat[1] ;
         {
             m_isPattern = true;
             m_patternColorComponents = new CGFloat[1] ;


@@ -659,15 +666,18 @@ public:
     ~wxMacCoreGraphicsBrushData ();
 
     virtual void Apply( wxGraphicsContext* context );
     ~wxMacCoreGraphicsBrushData ();
 
     virtual void Apply( wxGraphicsContext* context );

-    void CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
-        const wxColour&c1, const wxColour&c2 );
-    void CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
-    const wxColour &oColor, const wxColour &cColor );
+    void CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
+                                   wxDouble x2, wxDouble y2,
+                                   const wxGraphicsGradientStops& stops);
+    void CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
+                                   wxDouble xc, wxDouble yc, wxDouble radius,
+                                   const wxGraphicsGradientStops& stops);

 
     virtual bool IsShading() { return m_isShading; }
     CGShadingRef GetShading() { return m_shading; }
 protected:
 
     virtual bool IsShading() { return m_isShading; }
     CGShadingRef GetShading() { return m_shading; }
 protected:

-    CGFunctionRef CreateGradientFunction( const wxColour& c1, const wxColour& c2 );
+    CGFunctionRef CreateGradientFunction(const wxGraphicsGradientStops& stops);
+

     static void CalculateShadingValues (void *info, const CGFloat *in, CGFloat *out);
     virtual void Init();
 
     static void CalculateShadingValues (void *info, const CGFloat *in, CGFloat *out);
     virtual void Init();
 


@@ -676,7 +686,42 @@ protected:
     bool m_isShading;
     CGFunctionRef m_gradientFunction;
     CGShadingRef m_shading;
     bool m_isShading;
     CGFunctionRef m_gradientFunction;
     CGShadingRef m_shading;

-    CGFloat *m_gradientComponents;
+
+    // information about a single gradient component
+    struct GradientComponent
+    {
+        CGFloat pos;
+        CGFloat red;
+        CGFloat green;
+        CGFloat blue;
+        CGFloat alpha;
+    };
+
+    // and information about all of them
+    struct GradientComponents
+    {
+        GradientComponents()
+        {
+            count = 0;
+            comps = NULL;
+        }
+
+        void Init(unsigned count_)
+        {
+            count = count_;
+            comps = new GradientComponent[count];
+        }
+
+        ~GradientComponents()
+        {
+            delete [] comps;
+        }
+
+        unsigned count;
+        GradientComponent *comps;
+    };
+
+    GradientComponents m_gradientComponents;

 };
 
 wxMacCoreGraphicsBrushData::wxMacCoreGraphicsBrushData( wxGraphicsRenderer* renderer) : wxGraphicsObjectRefData( renderer )
 };
 
 wxMacCoreGraphicsBrushData::wxMacCoreGraphicsBrushData( wxGraphicsRenderer* renderer) : wxGraphicsObjectRefData( renderer )


@@ -684,19 +729,24 @@ wxMacCoreGraphicsBrushData::wxMacCoreGraphicsBrushData( wxGraphicsRenderer* rend
     Init();
 }
 
     Init();
 }
 

-void wxMacCoreGraphicsBrushData::CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
-        const wxColour&c1, const wxColour&c2 )
+void
+wxMacCoreGraphicsBrushData::CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
+                                                      wxDouble x2, wxDouble y2,
+                                                      const wxGraphicsGradientStops& stops)

 {
 {

-    m_gradientFunction = CreateGradientFunction( c1, c2 );
+    m_gradientFunction = CreateGradientFunction(stops);

     m_shading = CGShadingCreateAxial( wxMacGetGenericRGBColorSpace(), CGPointMake((CGFloat) x1, (CGFloat) y1),
                                         CGPointMake((CGFloat) x2,(CGFloat) y2), m_gradientFunction, true, true ) ;
     m_isShading = true ;
 }
 
     m_shading = CGShadingCreateAxial( wxMacGetGenericRGBColorSpace(), CGPointMake((CGFloat) x1, (CGFloat) y1),
                                         CGPointMake((CGFloat) x2,(CGFloat) y2), m_gradientFunction, true, true ) ;
     m_isShading = true ;
 }
 

-void wxMacCoreGraphicsBrushData::CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
-    const wxColour &oColor, const wxColour &cColor )
+void
+wxMacCoreGraphicsBrushData::CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
+                                                      wxDouble xc, wxDouble yc,
+                                                      wxDouble radius,
+                                                      const wxGraphicsGradientStops& stops)

 {
 {

-    m_gradientFunction = CreateGradientFunction( oColor, cColor );
+    m_gradientFunction = CreateGradientFunction(stops);

     m_shading = CGShadingCreateRadial( wxMacGetGenericRGBColorSpace(), CGPointMake((CGFloat) xo,(CGFloat) yo), 0,
                                         CGPointMake((CGFloat) xc,(CGFloat) yc), (CGFloat) radius, m_gradientFunction, true, true ) ;
     m_isShading = true ;
     m_shading = CGShadingCreateRadial( wxMacGetGenericRGBColorSpace(), CGPointMake((CGFloat) xo,(CGFloat) yo), 0,
                                         CGPointMake((CGFloat) xc,(CGFloat) yc), (CGFloat) radius, m_gradientFunction, true, true ) ;
     m_isShading = true ;


@@ -716,15 +766,12 @@ wxMacCoreGraphicsBrushData::~wxMacCoreGraphicsBrushData()
 
     if( m_gradientFunction )
         CGFunctionRelease(m_gradientFunction);
 
     if( m_gradientFunction )
         CGFunctionRelease(m_gradientFunction);

-
-    delete[] m_gradientComponents;

 }
 
 void wxMacCoreGraphicsBrushData::Init()
 {
     m_gradientFunction = NULL;
     m_shading = NULL;
 }
 
 void wxMacCoreGraphicsBrushData::Init()
 {
     m_gradientFunction = NULL;
     m_shading = NULL;

-    m_gradientComponents = NULL;

     m_isShading = false;
 }
 
     m_isShading = false;
 }
 


@@ -744,30 +791,70 @@ void wxMacCoreGraphicsBrushData::Apply( wxGraphicsContext* context )
 
 void wxMacCoreGraphicsBrushData::CalculateShadingValues (void *info, const CGFloat *in, CGFloat *out)
 {
 
 void wxMacCoreGraphicsBrushData::CalculateShadingValues (void *info, const CGFloat *in, CGFloat *out)
 {

-    CGFloat* colors = (CGFloat*) info ;
+    const GradientComponents& stops = *(GradientComponents*) info ;
+

     CGFloat f = *in;
     CGFloat f = *in;

-    for( int i = 0 ; i < 4 ; ++i )
+    if (f <= 0.0)
+    {
+        // Start
+        out[0] = stops.comps[0].red;
+        out[1] = stops.comps[0].green;
+        out[2] = stops.comps[0].blue;
+        out[3] = stops.comps[0].alpha;
+    }
+    else if (f >= 1.0)

     {
     {

-        out[i] = colors[i] + ( colors[4+i] - colors[i] ) * f;
+        // end
+        out[0] = stops.comps[stops.count - 1].red;
+        out[1] = stops.comps[stops.count - 1].green;
+        out[2] = stops.comps[stops.count - 1].blue;
+        out[3] = stops.comps[stops.count - 1].alpha;
+    }
+    else
+    {
+        // Find first component with position greater than f
+        unsigned i;
+        for ( i = 0; i < stops.count; i++ )
+        {
+            if (stops.comps[i].pos > f)
+                break;
+        }
+
+        // Interpolated between stops
+        CGFloat diff = (f - stops.comps[i-1].pos);
+        CGFloat range = (stops.comps[i].pos - stops.comps[i-1].pos);
+        CGFloat fact = diff / range;
+
+        out[0] = stops.comps[i - 1].red + (stops.comps[i].red - stops.comps[i - 1].red) * fact;
+        out[1] = stops.comps[i - 1].green + (stops.comps[i].green - stops.comps[i - 1].green) * fact;
+        out[2] = stops.comps[i - 1].blue + (stops.comps[i].blue - stops.comps[i - 1].blue) * fact;
+        out[3] = stops.comps[i - 1].alpha + (stops.comps[i].alpha - stops.comps[i - 1].alpha) * fact;

     }
 }
 
     }
 }
 

-CGFunctionRef wxMacCoreGraphicsBrushData::CreateGradientFunction( const wxColour& c1, const wxColour& c2 )
+CGFunctionRef
+wxMacCoreGraphicsBrushData::CreateGradientFunction(const wxGraphicsGradientStops& stops)

 {
 {

+

     static const CGFunctionCallbacks callbacks = { 0, &CalculateShadingValues, NULL };
     static const CGFloat input_value_range [2] = { 0, 1 };
     static const CGFloat output_value_ranges [8] = { 0, 1, 0, 1, 0, 1, 0, 1 };
     static const CGFunctionCallbacks callbacks = { 0, &CalculateShadingValues, NULL };
     static const CGFloat input_value_range [2] = { 0, 1 };
     static const CGFloat output_value_ranges [8] = { 0, 1, 0, 1, 0, 1, 0, 1 };

-    m_gradientComponents = new CGFloat[8] ;
-    m_gradientComponents[0] = (CGFloat) (c1.Red() / 255.0);
-    m_gradientComponents[1] = (CGFloat) (c1.Green() / 255.0);
-    m_gradientComponents[2] = (CGFloat) (c1.Blue() / 255.0);
-    m_gradientComponents[3] = (CGFloat) (c1.Alpha() / 255.0);
-    m_gradientComponents[4] = (CGFloat) (c2.Red() / 255.0);
-    m_gradientComponents[5] = (CGFloat) (c2.Green() / 255.0);
-    m_gradientComponents[6] = (CGFloat) (c2.Blue() / 255.0);
-    m_gradientComponents[7] = (CGFloat) (c2.Alpha() / 255.0);
-
-    return CGFunctionCreate ( m_gradientComponents,  1,
+
+    m_gradientComponents.Init(stops.GetCount());
+    for ( unsigned i = 0; i < m_gradientComponents.count; i++ )
+    {
+        const wxGraphicsGradientStop stop = stops.Item(i);
+
+        m_gradientComponents.comps[i].pos = stop.GetPosition();
+
+        const wxColour col = stop.GetColour();
+        m_gradientComponents.comps[i].red = (CGFloat) (col.Red() / 255.0);
+        m_gradientComponents.comps[i].green = (CGFloat) (col.Green() / 255.0);
+        m_gradientComponents.comps[i].blue = (CGFloat) (col.Blue() / 255.0);
+        m_gradientComponents.comps[i].alpha = (CGFloat) (col.Alpha() / 255.0);
+    }
+
+    return CGFunctionCreate ( &m_gradientComponents,  1,

                             input_value_range,
                             4,
                             output_value_ranges,
                             input_value_range,
                             4,
                             output_value_ranges,


@@ -796,7 +883,7 @@ public:
     virtual ATSUStyle GetATSUStyle() { return m_macATSUIStyle; }
 #endif
 #if wxOSX_USE_CORE_TEXT
     virtual ATSUStyle GetATSUStyle() { return m_macATSUIStyle; }
 #endif
 #if wxOSX_USE_CORE_TEXT

-    CTFontRef GetCTFont() const { return m_ctFont ; }
+    CTFontRef OSXGetCTFont() const { return m_ctFont ; }

 #endif
     wxColour GetColour() const { return m_colour ; }
 
 #endif
     wxColour GetColour() const { return m_colour ; }
 


@@ -840,7 +927,7 @@ wxMacCoreGraphicsFontData::wxMacCoreGraphicsFontData(wxGraphicsRenderer* rendere
 
     // we need the scale here ...
 
 
     // we need the scale here ...
 

-    Fixed atsuSize = IntToFixed( int( 1 * font.MacGetFontSize()) );
+    Fixed atsuSize = IntToFixed( int( 1 * font.GetPointSize()) );

     RGBColor atsuColor ;
     col.GetRGBColor( &atsuColor );
     ATSUAttributeTag atsuTags[] =
     RGBColor atsuColor ;
     col.GetRGBColor( &atsuColor );
     ATSUAttributeTag atsuTags[] =


@@ -848,19 +935,19 @@ wxMacCoreGraphicsFontData::wxMacCoreGraphicsFontData(wxGraphicsRenderer* rendere
             kATSUSizeTag ,
             kATSUColorTag ,
     };
             kATSUSizeTag ,
             kATSUColorTag ,
     };

-    ByteCount atsuSizes[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
+    ByteCount atsuSizes[WXSIZEOF(atsuTags)] =

     {
             sizeof( Fixed ) ,
             sizeof( RGBColor ) ,
     };
     {
             sizeof( Fixed ) ,
             sizeof( RGBColor ) ,
     };

-    ATSUAttributeValuePtr atsuValues[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
+    ATSUAttributeValuePtr atsuValues[WXSIZEOF(atsuTags)] =

     {
             &atsuSize ,
             &atsuColor ,
     };
 
     status = ::ATSUSetAttributes(
     {
             &atsuSize ,
             &atsuColor ,
     };
 
     status = ::ATSUSetAttributes(

-        m_macATSUIStyle, sizeof(atsuTags) / sizeof(ATSUAttributeTag) ,
+        m_macATSUIStyle, WXSIZEOF(atsuTags),

         atsuTags, atsuSizes, atsuValues);
 
     wxASSERT_MSG( status == noErr , wxT("couldn't modify ATSU style") );
         atsuTags, atsuSizes, atsuValues);
 
     wxASSERT_MSG( status == noErr , wxT("couldn't modify ATSU style") );


@@ -995,7 +1082,7 @@ wxGraphicsObjectRefData *wxMacCoreGraphicsMatrixData::Clone() const
 // concatenates the matrix
 void wxMacCoreGraphicsMatrixData::Concat( const wxGraphicsMatrixData *t )
 {
 // concatenates the matrix
 void wxMacCoreGraphicsMatrixData::Concat( const wxGraphicsMatrixData *t )
 {

-    m_matrix = CGAffineTransformConcat(m_matrix, *((CGAffineTransform*) t->GetNativeMatrix()) );
+    m_matrix = CGAffineTransformConcat(*((CGAffineTransform*) t->GetNativeMatrix()), m_matrix );

 }
 
 // sets the matrix to the respective values
 }
 
 // sets the matrix to the respective values


@@ -1131,9 +1218,12 @@ public :
     // appends a rectangle as a new closed subpath
     virtual void AddRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h );
 
     // appends a rectangle as a new closed subpath
     virtual void AddRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h );
 

-    // appends an ellipsis as a new closed subpath fitting the passed rectangle
+    // appends a circle as a new closed subpath

     virtual void AddCircle( wxDouble x, wxDouble y, wxDouble r );
 
     virtual void AddCircle( wxDouble x, wxDouble y, wxDouble r );
 

+    // appends an ellipsis as a new closed subpath fitting the passed rectangle
+    virtual void AddEllipse( wxDouble x, wxDouble y, wxDouble w, wxDouble h);
+

     // draws a an arc to two tangents connecting (current) to (x1,y1) and (x1,y1) to (x2,y2), also a straight line from (current) to (x1,y1)
     virtual void AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2, wxDouble y2, wxDouble r );
 
     // draws a an arc to two tangents connecting (current) to (x1,y1) and (x1,y1) to (x2,y2), also a straight line from (current) to (x1,y1)
     virtual void AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2, wxDouble y2, wxDouble r );
 


@@ -1150,7 +1240,7 @@ public :
     virtual void Transform( const wxGraphicsMatrixData* matrix );
 
     // gets the bounding box enclosing all points (possibly including control points)
     virtual void Transform( const wxGraphicsMatrixData* matrix );
 
     // gets the bounding box enclosing all points (possibly including control points)

-    virtual void GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *y) const;
+    virtual void GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *h) const;

 
     virtual bool Contains( wxDouble x, wxDouble y, wxPolygonFillMode fillStyle = wxODDEVEN_RULE) const;
 private :
 
     virtual bool Contains( wxDouble x, wxDouble y, wxPolygonFillMode fillStyle = wxODDEVEN_RULE) const;
 private :


@@ -1210,7 +1300,12 @@ void wxMacCoreGraphicsPathData::AddRectangle( wxDouble x, wxDouble y, wxDouble w
 
 void wxMacCoreGraphicsPathData::AddCircle( wxDouble x, wxDouble y , wxDouble r )
 {
 
 void wxMacCoreGraphicsPathData::AddCircle( wxDouble x, wxDouble y , wxDouble r )
 {

-    CGPathAddArc( m_path , NULL , (CGFloat) x , (CGFloat) y , (CGFloat) r , (CGFloat) 0.0 , (CGFloat) (2 * M_PI) , true );
+    CGPathAddEllipseInRect( m_path, NULL, CGRectMake(x-r,y-r,2*r,2*r));
+}
+
+void wxMacCoreGraphicsPathData::AddEllipse( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
+{
+    CGPathAddEllipseInRect( m_path, NULL, CGRectMake(x,y,w,h));

 }
 
 // adds an arc of a circle centering at (x,y) with radius (r) from startAngle to endAngle
 }
 
 // adds an arc of a circle centering at (x,y) with radius (r) from startAngle to endAngle


@@ -1295,9 +1390,6 @@ public:
 
     void Init();
 
 
     void Init();
 

-    // returns the size of the graphics context in device coordinates
-    virtual void GetSize( wxDouble* width, wxDouble* height);
-

     virtual void StartPage( wxDouble width, wxDouble height );
 
     virtual void EndPage();
     virtual void StartPage( wxDouble width, wxDouble height );
 
     virtual void EndPage();


@@ -1321,7 +1413,16 @@ public:
 
     virtual void * GetNativeContext();
 
 
     virtual void * GetNativeContext();
 

-    bool SetLogicalFunction( wxRasterOperationMode function );
+    virtual bool SetAntialiasMode(wxAntialiasMode antialias);
+
+    virtual bool SetInterpolationQuality(wxInterpolationQuality interpolation);
+    
+    virtual bool SetCompositionMode(wxCompositionMode op);
+
+    virtual void BeginLayer(wxDouble opacity);
+
+    virtual void EndLayer();
+

     //
     // transformation
     //
     //
     // transformation
     //


@@ -1358,6 +1459,9 @@ public:
 
     virtual bool ShouldOffset() const
     {
 
     virtual bool ShouldOffset() const
     {

+        if ( !m_enableOffset )
+            return false;
+        

         int penwidth = 0 ;
         if ( !m_pen.IsNull() )
         {
         int penwidth = 0 ;
         if ( !m_pen.IsNull() )
         {


@@ -1385,13 +1489,18 @@ public:
     virtual void DrawBitmap( const wxGraphicsBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
 
     virtual void DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
     virtual void DrawBitmap( const wxGraphicsBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
 
     virtual void DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h );

+    
+    // fast convenience methods
+    
+    
+    virtual void DrawRectangleX( wxDouble x, wxDouble y, wxDouble w, wxDouble h ); 

 
     void SetNativeContext( CGContextRef cg );
 
     DECLARE_DYNAMIC_CLASS_NO_COPY(wxMacCoreGraphicsContext)
 
 private:
 
     void SetNativeContext( CGContextRef cg );
 
     DECLARE_DYNAMIC_CLASS_NO_COPY(wxMacCoreGraphicsContext)
 
 private:

-    void EnsureIsValid();
+    bool EnsureIsValid();

 
     virtual void DoDrawText( const wxString &str, wxDouble x, wxDouble y );
     virtual void DoDrawRotatedText( const wxString &str, wxDouble x, wxDouble y, wxDouble angle );
 
     virtual void DoDrawText( const wxString &str, wxDouble x, wxDouble y );
     virtual void DoDrawRotatedText( const wxString &str, wxDouble x, wxDouble y, wxDouble angle );


@@ -1404,8 +1513,7 @@ private:
 #endif
     bool m_contextSynthesized;
     CGAffineTransform m_windowTransform;
 #endif
     bool m_contextSynthesized;
     CGAffineTransform m_windowTransform;

-    wxDouble m_width;
-    wxDouble m_height;
+    bool m_invisible;

 
 #if wxOSX_USE_COCOA_OR_CARBON
     wxCFRef<HIShapeRef> m_clipRgn;
 
 #if wxOSX_USE_COCOA_OR_CARBON
     wxCFRef<HIShapeRef> m_clipRgn;


@@ -1438,14 +1546,23 @@ public :
         m_cg = cg;
         m_offset = offset;
         if ( m_offset )
         m_cg = cg;
         m_offset = offset;
         if ( m_offset )

-            CGContextTranslateCTM( m_cg, (CGFloat) 0.5, (CGFloat) 0.5 );
+        {
+            m_userOffset = CGContextConvertSizeToUserSpace( m_cg, CGSizeMake( 0.5 , 0.5 ) );
+            CGContextTranslateCTM( m_cg, m_userOffset.width , m_userOffset.height );
+        }
+        else
+        {
+            m_userOffset = CGSizeMake(0.0, 0.0);
+        }
+

     }
     ~wxQuartzOffsetHelper( )
     {
         if ( m_offset )
     }
     ~wxQuartzOffsetHelper( )
     {
         if ( m_offset )

-            CGContextTranslateCTM( m_cg, (CGFloat) -0.5, (CGFloat) -0.5 );
+            CGContextTranslateCTM( m_cg, -m_userOffset.width , -m_userOffset.height );

     }
 public :
     }
 public :

+    CGSize m_userOffset;

     CGContextRef m_cg;
     bool m_offset;
 } ;
     CGContextRef m_cg;
     bool m_offset;
 } ;


@@ -1462,6 +1579,9 @@ void wxMacCoreGraphicsContext::Init()
 #if wxOSX_USE_COCOA_OR_IPHONE
     m_view = NULL;
 #endif
 #if wxOSX_USE_COCOA_OR_IPHONE
     m_view = NULL;
 #endif

+    m_invisible = false;
+    m_antialias = wxANTIALIAS_DEFAULT;
+    m_interpolation = wxINTERPOLATION_DEFAULT;

 }
 
 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, CGContextRef cgcontext, wxDouble width, wxDouble height ) : wxGraphicsContext(renderer)
 }
 
 wxMacCoreGraphicsContext::wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer, CGContextRef cgcontext, wxDouble width, wxDouble height ) : wxGraphicsContext(renderer)


@@ -1477,6 +1597,7 @@ wxMacCoreGraphicsContext::wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer
 {
     Init();
     m_windowRef = window;
 {
     Init();
     m_windowRef = window;

+    m_enableOffset = true;

 }
 #endif
 
 }
 #endif
 


@@ -1484,6 +1605,7 @@ wxMacCoreGraphicsContext::wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer
 {
     Init();
 
 {
     Init();
 

+    m_enableOffset = true;

     wxSize sz = window->GetSize();
     m_width = sz.x;
     m_height = sz.y;
     wxSize sz = window->GetSize();
     m_width = sz.x;
     m_height = sz.y;


@@ -1491,12 +1613,14 @@ wxMacCoreGraphicsContext::wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer
 #if wxOSX_USE_COCOA_OR_IPHONE
     m_view = window->GetHandle();
 
 #if wxOSX_USE_COCOA_OR_IPHONE
     m_view = window->GetHandle();
 

-    if ( !((wxWidgetCocoaImpl*) window->GetPeer())->IsFlipped() )
+#if wxOSX_USE_COCOA
+    if ( ! window->GetPeer()->IsFlipped() )

     {
         m_windowTransform = CGAffineTransformMakeTranslation( 0 , m_height );
         m_windowTransform = CGAffineTransformScale( m_windowTransform , 1 , -1 );
     }
     else
     {
         m_windowTransform = CGAffineTransformMakeTranslation( 0 , m_height );
         m_windowTransform = CGAffineTransformScale( m_windowTransform , 1 , -1 );
     }
     else

+#endif

     {
         m_windowTransform = CGAffineTransformIdentity;
     }
     {
         m_windowTransform = CGAffineTransformIdentity;
     }


@@ -1527,18 +1651,6 @@ wxMacCoreGraphicsContext::wxMacCoreGraphicsContext() : wxGraphicsContext(NULL)
 wxMacCoreGraphicsContext::~wxMacCoreGraphicsContext()
 {
     SetNativeContext(NULL);
 wxMacCoreGraphicsContext::~wxMacCoreGraphicsContext()
 {
     SetNativeContext(NULL);

-#if wxOSX_USE_COCOA_OR_IPHONE
-    if ( m_view )
-    {
-        CGContextFlush(m_cgContext);
-    }
-#endif
-}
-
-void wxMacCoreGraphicsContext::GetSize( wxDouble* width, wxDouble* height)
-{
-    *width = m_width;
-    *height = m_height;

 }
 
 
 }
 
 


@@ -1565,13 +1677,30 @@ void wxMacCoreGraphicsContext::Flush()
     CGContextFlush(m_cgContext);
 }
 
     CGContextFlush(m_cgContext);
 }
 

-void wxMacCoreGraphicsContext::EnsureIsValid()
+bool wxMacCoreGraphicsContext::EnsureIsValid()

 {
     if ( !m_cgContext )
     {
 {
     if ( !m_cgContext )
     {

-#if wxOSX_USE_COCOA_OR_IPHONE
-        wxOSXLockFocus(m_view);
-        m_cgContext = wxOSXGetContextFromCurrentNSContext();
+        if (m_invisible)
+            return false;
+
+#if wxOSX_USE_COCOA
+        if ( wxOSXLockFocus(m_view) )
+        {
+            m_cgContext = wxOSXGetContextFromCurrentContext();
+            wxASSERT_MSG( m_cgContext != NULL, wxT("Unable to retrieve drawing context from View"));
+        }
+        else
+        {
+            m_invisible = true;
+        }
+#endif
+#if wxOSX_USE_IPHONE
+        m_cgContext = wxOSXGetContextFromCurrentContext();
+        if ( m_cgContext == NULL )
+        {
+            m_invisible = true;
+        }

 #endif
 #if wxOSX_USE_CARBON
         OSStatus status = QDBeginCGContext( GetWindowPort( m_windowRef ) , &m_cgContext );
 #endif
 #if wxOSX_USE_CARBON
         OSStatus status = QDBeginCGContext( GetWindowPort( m_windowRef ) , &m_cgContext );


@@ -1580,110 +1709,247 @@ void wxMacCoreGraphicsContext::EnsureIsValid()
             wxFAIL_MSG("Cannot nest wxDCs on the same window");
         }
 #endif
             wxFAIL_MSG("Cannot nest wxDCs on the same window");
         }
 #endif

-        CGContextConcatCTM( m_cgContext, m_windowTransform );
-        CGContextSaveGState( m_cgContext );
-        m_contextSynthesized = true;
-        if ( m_clipRgn.get() )
+        if ( m_cgContext )

         {
         {

-            // the clip region is in device coordinates, so we convert this again to user coordinates
-            wxCFRef<HIMutableShapeRef> hishape( HIShapeCreateMutableCopy( m_clipRgn ) );
-            CGPoint transformedOrigin = CGPointApplyAffineTransform( CGPointZero,m_windowTransform);
-            HIShapeOffset( hishape, -transformedOrigin.x, -transformedOrigin.y );
-            // if the shape is empty, HIShapeReplacePathInCGContext doesn't work
-            if ( HIShapeIsEmpty(hishape))
+            CGContextSaveGState( m_cgContext );
+#if wxOSX_USE_COCOA_OR_CARBON
+            if ( m_clipRgn.get() )

             {
             {

-                CGRect empty = CGRectMake( 0,0,0,0 );
-                CGContextClipToRect( m_cgContext, empty );
+                wxCFRef<HIMutableShapeRef> hishape( HIShapeCreateMutableCopy( m_clipRgn ) );
+                // if the shape is empty, HIShapeReplacePathInCGContext doesn't work
+                if ( HIShapeIsEmpty(hishape))
+                {
+                    CGRect empty = CGRectMake( 0,0,0,0 );
+                    CGContextClipToRect( m_cgContext, empty );
+                }
+                else
+                {
+                    HIShapeReplacePathInCGContext( hishape, m_cgContext );
+                    CGContextClip( m_cgContext );
+                }

             }
             }

-            else
+#endif
+            CGContextConcatCTM( m_cgContext, m_windowTransform );
+            CGContextSetTextMatrix( m_cgContext, CGAffineTransformIdentity );
+            m_contextSynthesized = true;
+            CGContextSaveGState( m_cgContext );
+
+#if 0 // turn on for debugging of clientdc
+            static float color = 0.5 ;
+            static int channel = 0 ;
+            CGRect bounds = CGRectMake(-1000,-1000,2000,2000);
+            CGContextSetRGBFillColor( m_cgContext, channel == 0 ? color : 0.5 ,
+                channel == 1 ? color : 0.5 , channel == 2 ? color : 0.5 , 1 );
+            CGContextFillRect( m_cgContext, bounds );
+            color += 0.1 ;
+            if ( color > 0.9 )

             {
             {

-                HIShapeReplacePathInCGContext( hishape, m_cgContext );
-                CGContextClip( m_cgContext );
+                color = 0.5 ;
+                channel++ ;
+                if ( channel == 3 )
+                    channel = 0 ;

             }
             }

-        }
-        CGContextSaveGState( m_cgContext );
-        
-#if 0 // turn on for debugging of clientdc
-        static float color = 0.5 ;
-        static int channel = 0 ;
-        CGRect bounds = CGRectMake(-1000,-1000,2000,2000);
-        CGContextSetRGBFillColor( m_cgContext, channel == 0 ? color : 0.5 ,
-            channel == 1 ? color : 0.5 , channel == 2 ? color : 0.5 , 1 );
-        CGContextFillRect( m_cgContext, bounds );
-        color += 0.1 ;
-        if ( color > 0.9 )
-        {
-            color = 0.5 ;
-            channel++ ;
-            if ( channel == 3 )
-                channel = 0 ;
-        }

 #endif
 #endif

+        }

     }
     }

+    return m_cgContext != NULL;

 }
 
 }
 

-// TODO test whether the private CGContextSetCompositeOperation works under 10.3 (using NSCompositingModes)
-
-bool wxMacCoreGraphicsContext::SetLogicalFunction( wxRasterOperationMode function )
+bool wxMacCoreGraphicsContext::SetAntialiasMode(wxAntialiasMode antialias)

 {
 {

-    if (m_logicalFunction == function)
+    if (!EnsureIsValid())

         return true;
 
         return true;
 

-    EnsureIsValid();
+    if (m_antialias == antialias)
+        return true;

 
 

-    bool retval = false;
-    bool shouldAntiAlias = true;
-    CGBlendMode mode = kCGBlendModeNormal;
+    m_antialias = antialias;

 
 

-#if defined(__WXMAC__) && ( wxOSX_USE_IPHONE || ( MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5 ) )
-#if wxOSX_USE_IPHONE
-    if ( 1 )
+    bool antialiasMode;
+    switch (antialias)
+    {
+        case wxANTIALIAS_DEFAULT:
+            antialiasMode = true;
+            break;
+        case wxANTIALIAS_NONE:
+            antialiasMode = false;
+            break;
+        default:
+            return false;
+    }
+    CGContextSetShouldAntialias(m_cgContext, antialiasMode);
+    return true;
+}
+
+bool wxMacCoreGraphicsContext::SetInterpolationQuality(wxInterpolationQuality interpolation)
+{
+    if (!EnsureIsValid())
+        return true;
+    
+    if (m_interpolation == interpolation)
+        return true;
+
+    m_interpolation = interpolation;
+    CGInterpolationQuality quality;
+    
+    switch (interpolation) 
+    {
+        case wxINTERPOLATION_DEFAULT:
+            quality = kCGInterpolationDefault;
+            break;
+        case wxINTERPOLATION_NONE:
+            quality = kCGInterpolationNone;
+            break;
+        case wxINTERPOLATION_FAST:
+            quality = kCGInterpolationLow;
+            break;
+        case wxINTERPOLATION_GOOD:
+#if wxOSX_USE_COCOA_OR_CARBON
+            quality = UMAGetSystemVersion() < 0x1060 ? kCGInterpolationHigh : (CGInterpolationQuality) 4 /*kCGInterpolationMedium only on 10.6*/;

 #else
 #else

-    if ( UMAGetSystemVersion() >= 0x1050 )
+            quality = kCGInterpolationMedium;

 #endif
 #endif

+            break;
+        case wxINTERPOLATION_BEST:
+            quality = kCGInterpolationHigh;
+            break;
+        default:
+            return false;
+    }
+    CGContextSetInterpolationQuality(m_cgContext, quality);
+    return true;
+}
+
+bool wxMacCoreGraphicsContext::SetCompositionMode(wxCompositionMode op)
+{
+    if (!EnsureIsValid())
+        return true;
+
+    if ( m_composition == op )
+        return true;
+
+    m_composition = op;
+
+    if (m_composition == wxCOMPOSITION_DEST)
+        return true;
+
+#if wxOSX_USE_COCOA_OR_CARBON
+    if ( UMAGetSystemVersion() < 0x1060 )

     {
     {

-        retval = true;
-        switch ( function )
+        CGCompositeOperation cop = kCGCompositeOperationSourceOver;
+        CGBlendMode mode = kCGBlendModeNormal;
+        switch( op )

         {
         {

-            // TODO find best corresponding porter duff modes
-            case wxCOPY :
-                mode = kCGBlendModeCopy;
-                break;
-            case wxCLEAR :
-                mode = kCGBlendModeClear;
-                break;
-            case wxXOR :
-                mode = kCGBlendModeXOR;
-                shouldAntiAlias = false;
-                break;
-            default :
-                retval = false;
-                break;
+        case wxCOMPOSITION_CLEAR:
+            cop = kCGCompositeOperationClear;
+            break;
+        case wxCOMPOSITION_SOURCE:
+            cop = kCGCompositeOperationCopy;
+            break;
+        case wxCOMPOSITION_OVER:
+            mode = kCGBlendModeNormal;
+            break;
+        case wxCOMPOSITION_IN:
+            cop = kCGCompositeOperationSourceIn;
+            break;
+        case wxCOMPOSITION_OUT:
+            cop = kCGCompositeOperationSourceOut;
+            break;
+        case wxCOMPOSITION_ATOP:
+            cop = kCGCompositeOperationSourceAtop;
+            break;
+        case wxCOMPOSITION_DEST_OVER:
+            cop = kCGCompositeOperationDestinationOver;
+            break;
+        case wxCOMPOSITION_DEST_IN:
+            cop = kCGCompositeOperationDestinationIn;
+            break;
+        case wxCOMPOSITION_DEST_OUT:
+            cop = kCGCompositeOperationDestinationOut;
+            break;
+        case wxCOMPOSITION_DEST_ATOP:
+           cop = kCGCompositeOperationDestinationAtop;
+            break;
+        case wxCOMPOSITION_XOR:
+            cop = kCGCompositeOperationXOR;
+            break;
+#if MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_5
+        case wxCOMPOSITION_ADD:
+            mode = kCGBlendModePlusLighter ;
+            break;
+#endif
+        default:
+            return false;

         }
         }

+        if ( cop != kCGCompositeOperationSourceOver )
+            CGContextSetCompositeOperation(m_cgContext, cop);
+        else
+            CGContextSetBlendMode(m_cgContext, mode);

     }
     }

-    else

 #endif
 #endif

+#if MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_5
+    else

     {
     {

-        if ( function == wxCOPY )
+        CGBlendMode mode = kCGBlendModeNormal;
+        switch( op )

         {
         {

-            retval = true;
-        }
-        else if ( function == wxINVERT || function == wxXOR )
-        {
-            // change color to white
-            mode = kCGBlendModeExclusion;
-            shouldAntiAlias = false;
-            retval = true;
+        case wxCOMPOSITION_CLEAR:
+            mode = kCGBlendModeClear;
+            break;
+        case wxCOMPOSITION_SOURCE:
+            mode = kCGBlendModeCopy;
+            break;
+        case wxCOMPOSITION_OVER:
+            mode = kCGBlendModeNormal;
+            break;
+        case wxCOMPOSITION_IN:
+            mode = kCGBlendModeSourceIn;
+            break;
+        case wxCOMPOSITION_OUT:
+            mode = kCGBlendModeSourceOut;
+            break;
+        case wxCOMPOSITION_ATOP:
+            mode = kCGBlendModeSourceAtop;
+            break;
+        case wxCOMPOSITION_DEST_OVER:
+            mode = kCGBlendModeDestinationOver;
+            break;
+        case wxCOMPOSITION_DEST_IN:
+            mode = kCGBlendModeDestinationIn;
+            break;
+        case wxCOMPOSITION_DEST_OUT:
+            mode = kCGBlendModeDestinationOut;
+            break;
+        case wxCOMPOSITION_DEST_ATOP:
+           mode = kCGBlendModeDestinationAtop;
+            break;
+        case wxCOMPOSITION_XOR:
+            mode = kCGBlendModeXOR;
+            break;
+
+        case wxCOMPOSITION_ADD:
+            mode = kCGBlendModePlusLighter ;
+            break;
+        default:
+            return false;

         }
         }

+        CGContextSetBlendMode(m_cgContext, mode);

     }
     }

+#endif
+    return true;
+}

 
 

-    if (retval)
-    {
-        m_logicalFunction = function;
-        CGContextSetBlendMode( m_cgContext, mode );
-        CGContextSetShouldAntialias(m_cgContext, shouldAntiAlias);
-    }
-    return retval ;
+void wxMacCoreGraphicsContext::BeginLayer(wxDouble opacity)
+{
+    CGContextSaveGState(m_cgContext);
+    CGContextSetAlpha(m_cgContext, (CGFloat) opacity);
+    CGContextBeginTransparencyLayer(m_cgContext, 0);
+}
+
+void wxMacCoreGraphicsContext::EndLayer()
+{
+    CGContextEndTransparencyLayer(m_cgContext);
+    CGContextRestoreGState(m_cgContext);

 }
 
 void wxMacCoreGraphicsContext::Clip( const wxRegion &region )
 }
 
 void wxMacCoreGraphicsContext::Clip( const wxRegion &region )


@@ -1734,6 +2000,7 @@ void wxMacCoreGraphicsContext::Clip( wxDouble x, wxDouble y, wxDouble w, wxDoubl
         // the clipping itself must be stored as device coordinates, otherwise
         // we cannot apply it back correctly
         r.origin= CGPointApplyAffineTransform( r.origin, m_windowTransform );
         // the clipping itself must be stored as device coordinates, otherwise
         // we cannot apply it back correctly
         r.origin= CGPointApplyAffineTransform( r.origin, m_windowTransform );

+        r.size= CGSizeApplyAffineTransform(r.size, m_windowTransform);

         m_clipRgn.reset(HIShapeCreateWithRect(&r));
 #else
     // allow usage as measuring context
         m_clipRgn.reset(HIShapeCreateWithRect(&r));
 #else
     // allow usage as measuring context


@@ -1773,7 +2040,11 @@ void wxMacCoreGraphicsContext::StrokePath( const wxGraphicsPath &path )
     if ( m_pen.IsNull() )
         return ;
 
     if ( m_pen.IsNull() )
         return ;
 

-    EnsureIsValid();
+    if (!EnsureIsValid())
+        return;
+
+    if (m_composition == wxCOMPOSITION_DEST)
+        return;

 
     wxQuartzOffsetHelper helper( m_cgContext , ShouldOffset() );
 
 
     wxQuartzOffsetHelper helper( m_cgContext , ShouldOffset() );
 


@@ -1784,6 +2055,12 @@ void wxMacCoreGraphicsContext::StrokePath( const wxGraphicsPath &path )
 
 void wxMacCoreGraphicsContext::DrawPath( const wxGraphicsPath &path , wxPolygonFillMode fillStyle )
 {
 
 void wxMacCoreGraphicsContext::DrawPath( const wxGraphicsPath &path , wxPolygonFillMode fillStyle )
 {

+    if (!EnsureIsValid())
+        return;
+
+    if (m_composition == wxCOMPOSITION_DEST)
+        return;
+

     if ( !m_brush.IsNull() && ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->IsShading() )
     {
         // when using shading, we cannot draw pen and brush at the same time
     if ( !m_brush.IsNull() && ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->IsShading() )
     {
         // when using shading, we cannot draw pen and brush at the same time


@@ -1818,8 +2095,6 @@ void wxMacCoreGraphicsContext::DrawPath( const wxGraphicsPath &path , wxPolygonF
         }
     }
 
         }
     }
 

-    EnsureIsValid();
-

     if ( !m_brush.IsNull() )
         ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->Apply(this);
     if ( !m_pen.IsNull() )
     if ( !m_brush.IsNull() )
         ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->Apply(this);
     if ( !m_pen.IsNull() )


@@ -1836,7 +2111,11 @@ void wxMacCoreGraphicsContext::FillPath( const wxGraphicsPath &path , wxPolygonF
     if ( m_brush.IsNull() )
         return;
 
     if ( m_brush.IsNull() )
         return;
 

-    EnsureIsValid();
+    if (!EnsureIsValid())
+        return;
+
+    if (m_composition == wxCOMPOSITION_DEST)
+        return;

 
     if ( ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->IsShading() )
     {
 
     if ( ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->IsShading() )
     {


@@ -1868,13 +2147,10 @@ void wxMacCoreGraphicsContext::SetNativeContext( CGContextRef cg )
         CGContextRestoreGState( m_cgContext );
         if ( m_contextSynthesized )
         {
         CGContextRestoreGState( m_cgContext );
         if ( m_contextSynthesized )
         {

-            // TODO: in case of performance problems, try issuing this not too 
-            // frequently (half of refresh rate)
-            CGContextFlush(m_cgContext);

 #if wxOSX_USE_CARBON
             QDEndCGContext( GetWindowPort( m_windowRef ) , &m_cgContext);
 #endif
 #if wxOSX_USE_CARBON
             QDEndCGContext( GetWindowPort( m_windowRef ) , &m_cgContext);
 #endif

-#if wxOSX_USE_COCOA_OR_IPHONE
+#if wxOSX_USE_COCOA

             wxOSXUnlockFocus(m_view);
 #endif
         }
             wxOSXUnlockFocus(m_view);
 #endif
         }


@@ -1933,14 +2209,19 @@ void wxMacCoreGraphicsContext::DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDo
 
 void wxMacCoreGraphicsContext::DrawBitmap( const wxGraphicsBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
 {
 
 void wxMacCoreGraphicsContext::DrawBitmap( const wxGraphicsBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
 {

-    EnsureIsValid();
+    if (!EnsureIsValid())
+        return;
+
+    if (m_composition == wxCOMPOSITION_DEST)
+        return;
+

 #ifdef __WXMAC__
     wxMacCoreGraphicsBitmapData* refdata  =static_cast<wxMacCoreGraphicsBitmapData*>(bmp.GetRefData());
     CGImageRef image = refdata->GetBitmap();
     CGRect r = CGRectMake( (CGFloat) x , (CGFloat) y , (CGFloat) w , (CGFloat) h );
     if ( refdata->IsMonochrome() == 1 )
     {
 #ifdef __WXMAC__
     wxMacCoreGraphicsBitmapData* refdata  =static_cast<wxMacCoreGraphicsBitmapData*>(bmp.GetRefData());
     CGImageRef image = refdata->GetBitmap();
     CGRect r = CGRectMake( (CGFloat) x , (CGFloat) y , (CGFloat) w , (CGFloat) h );
     if ( refdata->IsMonochrome() == 1 )
     {

-        // is is a mask, the '1' in the mask tell where to draw the current brush
+        // is a mask, the '1' in the mask tell where to draw the current brush

         if (  !m_brush.IsNull() )
         {
             if ( ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->IsShading() )
         if (  !m_brush.IsNull() )
         {
             if ( ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->IsShading() )


@@ -1970,29 +2251,35 @@ void wxMacCoreGraphicsContext::DrawBitmap( const wxGraphicsBitmap &bmp, wxDouble
 
 void wxMacCoreGraphicsContext::DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
 {
 
 void wxMacCoreGraphicsContext::DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
 {

-    EnsureIsValid();
+    if (!EnsureIsValid())
+        return;
+
+    if (m_composition == wxCOMPOSITION_DEST)
+        return;

 
     CGRect r = CGRectMake( (CGFloat) 0.0 , (CGFloat) 0.0 , (CGFloat) w , (CGFloat) h );
     CGContextSaveGState( m_cgContext );
     CGContextTranslateCTM( m_cgContext,(CGFloat) x ,(CGFloat) (y + h) );
     CGContextScaleCTM( m_cgContext, 1, -1 );
 
     CGRect r = CGRectMake( (CGFloat) 0.0 , (CGFloat) 0.0 , (CGFloat) w , (CGFloat) h );
     CGContextSaveGState( m_cgContext );
     CGContextTranslateCTM( m_cgContext,(CGFloat) x ,(CGFloat) (y + h) );
     CGContextScaleCTM( m_cgContext, 1, -1 );

-#if wxOSX_USE_CARBON
+#if wxOSX_USE_COCOA_OR_CARBON

     PlotIconRefInContext( m_cgContext , &r , kAlignNone , kTransformNone ,
     PlotIconRefInContext( m_cgContext , &r , kAlignNone , kTransformNone ,

-        NULL , kPlotIconRefNormalFlags , MAC_WXHICON( icon.GetHICON() ) );
+        NULL , kPlotIconRefNormalFlags , icon.GetHICON() );

 #endif
     CGContextRestoreGState( m_cgContext );
 }
 
 void wxMacCoreGraphicsContext::PushState()
 {
 #endif
     CGContextRestoreGState( m_cgContext );
 }
 
 void wxMacCoreGraphicsContext::PushState()
 {

-    EnsureIsValid();
+    if (!EnsureIsValid())
+        return;

 
     CGContextSaveGState( m_cgContext );
 }
 
 void wxMacCoreGraphicsContext::PopState()
 {
 
     CGContextSaveGState( m_cgContext );
 }
 
 void wxMacCoreGraphicsContext::PopState()
 {

-    EnsureIsValid();
+    if (!EnsureIsValid())
+        return;

 
     CGContextRestoreGState( m_cgContext );
 }
 
     CGContextRestoreGState( m_cgContext );
 }


@@ -2001,13 +2288,18 @@ void wxMacCoreGraphicsContext::DoDrawText( const wxString &str, wxDouble x, wxDo
 {
     wxCHECK_RET( !m_font.IsNull(), wxT("wxMacCoreGraphicsContext::DrawText - no valid font set") );
 
 {
     wxCHECK_RET( !m_font.IsNull(), wxT("wxMacCoreGraphicsContext::DrawText - no valid font set") );
 

-    EnsureIsValid();
+    if (!EnsureIsValid())
+        return;
+
+    if (m_composition == wxCOMPOSITION_DEST)
+        return;
+

 #if wxOSX_USE_CORE_TEXT
     if ( UMAGetSystemVersion() >= 0x1050 )
     {
         wxMacCoreGraphicsFontData* fref = (wxMacCoreGraphicsFontData*)m_font.GetRefData();
         wxCFStringRef text(str, wxLocale::GetSystemEncoding() );
 #if wxOSX_USE_CORE_TEXT
     if ( UMAGetSystemVersion() >= 0x1050 )
     {
         wxMacCoreGraphicsFontData* fref = (wxMacCoreGraphicsFontData*)m_font.GetRefData();
         wxCFStringRef text(str, wxLocale::GetSystemEncoding() );

-        CTFontRef font = fref->GetCTFont();
+        CTFontRef font = fref->OSXGetCTFont();

         CGColorRef col = wxMacCreateCGColor( fref->GetColour() );
         CTUnderlineStyle ustyle = fref->GetUnderlined() ? kCTUnderlineStyleSingle : kCTUnderlineStyleNone ;
         wxCFRef<CFNumberRef> underlined( CFNumberCreate(NULL, kCFNumberSInt32Type, &ustyle) );
         CGColorRef col = wxMacCreateCGColor( fref->GetColour() );
         CTUnderlineStyle ustyle = fref->GetUnderlined() ? kCTUnderlineStyleSingle : kCTUnderlineStyleNone ;
         wxCFRef<CFNumberRef> underlined( CFNumberCreate(NULL, kCFNumberSInt32Type, &ustyle) );


@@ -2021,7 +2313,7 @@ void wxMacCoreGraphicsContext::DoDrawText( const wxString &str, wxDouble x, wxDo
         y += CTFontGetAscent(font);
 
         CGContextSaveGState(m_cgContext);
         y += CTFontGetAscent(font);
 
         CGContextSaveGState(m_cgContext);

-        CGContextTranslateCTM(m_cgContext, x, y);
+        CGContextTranslateCTM(m_cgContext, (CGFloat) x, (CGFloat) y);

         CGContextScaleCTM(m_cgContext, 1, -1);
         CGContextSetTextPosition(m_cgContext, 0, 0);
         CTLineDraw( line, m_cgContext );
         CGContextScaleCTM(m_cgContext, 1, -1);
         CGContextSetTextPosition(m_cgContext, 0, 0);
         CTLineDraw( line, m_cgContext );


@@ -2059,7 +2351,12 @@ void wxMacCoreGraphicsContext::DoDrawRotatedText(const wxString &str,
 {
     wxCHECK_RET( !m_font.IsNull(), wxT("wxMacCoreGraphicsContext::DrawText - no valid font set") );
 
 {
     wxCHECK_RET( !m_font.IsNull(), wxT("wxMacCoreGraphicsContext::DrawText - no valid font set") );
 

-    EnsureIsValid();
+    if (!EnsureIsValid())
+        return;
+
+    if (m_composition == wxCOMPOSITION_DEST)
+        return;
+

 #if wxOSX_USE_CORE_TEXT
     if ( UMAGetSystemVersion() >= 0x1050 )
     {
 #if wxOSX_USE_CORE_TEXT
     if ( UMAGetSystemVersion() >= 0x1050 )
     {


@@ -2092,15 +2389,15 @@ void wxMacCoreGraphicsContext::DoDrawRotatedText(const wxString &str,
             {
                 kATSULineRotationTag ,
             };
             {
                 kATSULineRotationTag ,
             };

-            ByteCount atsuSizes[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
+            ByteCount atsuSizes[WXSIZEOF(atsuTags)] =

             {
                 sizeof( Fixed ) ,
             };
             {
                 sizeof( Fixed ) ,
             };

-            ATSUAttributeValuePtr    atsuValues[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
+            ATSUAttributeValuePtr    atsuValues[WXSIZEOF(atsuTags)] =

             {
                 &atsuAngle ,
             };
             {
                 &atsuAngle ,
             };

-            status = ::ATSUSetLayoutControls(atsuLayout , sizeof(atsuTags) / sizeof(ATSUAttributeTag),
+            status = ::ATSUSetLayoutControls(atsuLayout , WXSIZEOF(atsuTags),

                                              atsuTags, atsuSizes, atsuValues );
         }
 
                                              atsuTags, atsuSizes, atsuValues );
         }
 


@@ -2109,15 +2406,15 @@ void wxMacCoreGraphicsContext::DoDrawRotatedText(const wxString &str,
             {
                 kATSUCGContextTag ,
             };
             {
                 kATSUCGContextTag ,
             };

-            ByteCount atsuSizes[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
+            ByteCount atsuSizes[WXSIZEOF(atsuTags)] =

             {
                 sizeof( CGContextRef ) ,
             };
             {
                 sizeof( CGContextRef ) ,
             };

-            ATSUAttributeValuePtr    atsuValues[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
+            ATSUAttributeValuePtr    atsuValues[WXSIZEOF(atsuTags)] =

             {
                 &m_cgContext ,
             };
             {
                 &m_cgContext ,
             };

-            status = ::ATSUSetLayoutControls(atsuLayout , sizeof(atsuTags) / sizeof(ATSUAttributeTag),
+            status = ::ATSUSetLayoutControls(atsuLayout , WXSIZEOF(atsuTags),

                                              atsuTags, atsuSizes, atsuValues );
         }
 
                                              atsuTags, atsuSizes, atsuValues );
         }
 


@@ -2130,8 +2427,8 @@ void wxMacCoreGraphicsContext::DoDrawRotatedText(const wxString &str,
         wxASSERT_MSG( status == noErr , wxT("couldn't measure the rotated text") );
 
         Rect rect;
         wxASSERT_MSG( status == noErr , wxT("couldn't measure the rotated text") );
 
         Rect rect;

-        x += (int)(sin(angle) * FixedToInt(ascent));
-        y += (int)(cos(angle) * FixedToInt(ascent));
+        x += (int)(sin(angle) * FixedToFloat(ascent));
+        y += (int)(cos(angle) * FixedToFloat(ascent));

 
         status = ::ATSUMeasureTextImage( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
                                         IntToFixed(x) , IntToFixed(y) , &rect );
 
         status = ::ATSUMeasureTextImage( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
                                         IntToFixed(x) , IntToFixed(y) , &rect );


@@ -2179,7 +2476,7 @@ void wxMacCoreGraphicsContext::GetTextExtent( const wxString &str, wxDouble *wid
     if ( UMAGetSystemVersion() >= 0x1050 )
     {
         wxMacCoreGraphicsFontData* fref = (wxMacCoreGraphicsFontData*)m_font.GetRefData();
     if ( UMAGetSystemVersion() >= 0x1050 )
     {
         wxMacCoreGraphicsFontData* fref = (wxMacCoreGraphicsFontData*)m_font.GetRefData();

-        CTFontRef font = fref->GetCTFont();
+        CTFontRef font = fref->OSXGetCTFont();

 
         wxCFStringRef text(str, wxLocale::GetSystemEncoding() );
         CFStringRef keys[] = { kCTFontAttributeName  };
 
         wxCFStringRef text(str, wxLocale::GetSystemEncoding() );
         CFStringRef keys[] = { kCTFontAttributeName  };


@@ -2189,9 +2486,8 @@ void wxMacCoreGraphicsContext::GetTextExtent( const wxString &str, wxDouble *wid
         wxCFRef<CFAttributedStringRef> attrtext( CFAttributedStringCreate(kCFAllocatorDefault, text, attributes) );
         wxCFRef<CTLineRef> line( CTLineCreateWithAttributedString(attrtext) );
 
         wxCFRef<CFAttributedStringRef> attrtext( CFAttributedStringCreate(kCFAllocatorDefault, text, attributes) );
         wxCFRef<CTLineRef> line( CTLineCreateWithAttributedString(attrtext) );
 

-        CGFloat w, a, d, l;
-
-        w = CTLineGetTypographicBounds(line, &a, &d, &l) ;
+        CGFloat a, d, l, w;
+        w = CTLineGetTypographicBounds(line, &a, &d, &l);

 
         if ( height )
             *height = a+d+l;
 
         if ( height )
             *height = a+d+l;


@@ -2228,13 +2524,13 @@ void wxMacCoreGraphicsContext::GetTextExtent( const wxString &str, wxDouble *wid
                                             &textBefore , &textAfter, &textAscent , &textDescent );
 
         if ( height )
                                             &textBefore , &textAfter, &textAscent , &textDescent );
 
         if ( height )

-            *height = FixedToInt(textAscent + textDescent);
+            *height = FixedToFloat(textAscent + textDescent);

         if ( descent )
         if ( descent )

-            *descent = FixedToInt(textDescent);
+            *descent = FixedToFloat(textDescent);

         if ( externalLeading )
             *externalLeading = 0;
         if ( width )
         if ( externalLeading )
             *externalLeading = 0;
         if ( width )

-            *width = FixedToInt(textAfter - textBefore);
+            *width = FixedToFloat(textAfter - textBefore);

 
         ::ATSUDisposeTextLayout(atsuLayout);
 
 
         ::ATSUDisposeTextLayout(atsuLayout);
 


@@ -2251,7 +2547,7 @@ void wxMacCoreGraphicsContext::GetTextExtent( const wxString &str, wxDouble *wid
         *height = sz.height;
         /*
     if ( descent )
         *height = sz.height;
         /*
     if ( descent )

-        *descent = FixedToInt(textDescent);
+        *descent = FixedToFloat(textDescent);

     if ( externalLeading )
         *externalLeading = 0;
         */
     if ( externalLeading )
         *externalLeading = 0;
         */


@@ -2273,7 +2569,7 @@ void wxMacCoreGraphicsContext::GetPartialTextExtents(const wxString& text, wxArr
 #if wxOSX_USE_CORE_TEXT
     {
         wxMacCoreGraphicsFontData* fref = (wxMacCoreGraphicsFontData*)m_font.GetRefData();
 #if wxOSX_USE_CORE_TEXT
     {
         wxMacCoreGraphicsFontData* fref = (wxMacCoreGraphicsFontData*)m_font.GetRefData();

-        CTFontRef font = fref->GetCTFont();
+        CTFontRef font = fref->OSXGetCTFont();

 
         wxCFStringRef t(text, wxLocale::GetSystemEncoding() );
         CFStringRef keys[] = { kCTFontAttributeName  };
 
         wxCFStringRef t(text, wxLocale::GetSystemEncoding() );
         CFStringRef keys[] = { kCTFontAttributeName  };


@@ -2286,7 +2582,7 @@ void wxMacCoreGraphicsContext::GetPartialTextExtents(const wxString& text, wxArr
         int chars = text.length();
         for ( int pos = 0; pos < (int)chars; pos ++ )
         {
         int chars = text.length();
         for ( int pos = 0; pos < (int)chars; pos ++ )
         {

-            widths[pos] = CTLineGetOffsetForStringIndex( line, pos+1 , NULL )+0.5;
+            widths[pos] = CTLineGetOffsetForStringIndex( line, pos+1 , NULL );

         }
 
         return;
         }
 
         return;


@@ -2322,7 +2618,7 @@ void wxMacCoreGraphicsContext::GetPartialTextExtents(const wxString& text, wxArr
             if (result != noErr || actualNumberOfBounds != 1 )
                 return;
 
             if (result != noErr || actualNumberOfBounds != 1 )
                 return;
 

-            widths[pos] = FixedToInt( glyphBounds.upperRight.x - glyphBounds.upperLeft.x );
+            widths[pos] = FixedToFloat( glyphBounds.upperRight.x - glyphBounds.upperLeft.x );

             //unsigned char uch = s[i];
         }
 #else
             //unsigned char uch = s[i];
         }
 #else


@@ -2342,7 +2638,7 @@ void wxMacCoreGraphicsContext::GetPartialTextExtents(const wxString& text, wxArr
         {
             for ( int pos = 1; pos < (int)glyphCount ; pos ++ )
             {
         {
             for ( int pos = 1; pos < (int)glyphCount ; pos ++ )
             {

-                widths[pos-1] = FixedToInt( layoutRecords[pos].realPos );
+                widths[pos-1] = FixedToFloat( layoutRecords[pos].realPos );

             }
         }
 
             }
         }
 


@@ -2363,13 +2659,34 @@ void * wxMacCoreGraphicsContext::GetNativeContext()
     return m_cgContext;
 }
 
     return m_cgContext;
 }
 

+
+void wxMacCoreGraphicsContext::DrawRectangleX( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
+{
+    if (m_composition == wxCOMPOSITION_DEST) 
+        return; 
+
+    CGRect rect = CGRectMake( (CGFloat) x , (CGFloat) y , (CGFloat) w , (CGFloat) h );
+    if ( !m_brush.IsNull() )
+    {
+        ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->Apply(this);
+        CGContextFillRect(m_cgContext, rect);
+    }
+    
+    wxQuartzOffsetHelper helper( m_cgContext , ShouldOffset() );
+    if ( !m_pen.IsNull() )
+    {
+        ((wxMacCoreGraphicsPenData*)m_pen.GetRefData())->Apply(this);
+        CGContextStrokeRect(m_cgContext, rect);
+    }
+}
+

 // concatenates this transform with the current transform of this context
 void wxMacCoreGraphicsContext::ConcatTransform( const wxGraphicsMatrix& matrix )
 {
     if ( m_cgContext )
         CGContextConcatCTM( m_cgContext, *(CGAffineTransform*) matrix.GetNativeMatrix());
     else
 // concatenates this transform with the current transform of this context
 void wxMacCoreGraphicsContext::ConcatTransform( const wxGraphicsMatrix& matrix )
 {
     if ( m_cgContext )
         CGContextConcatCTM( m_cgContext, *(CGAffineTransform*) matrix.GetNativeMatrix());
     else

-        m_windowTransform = CGAffineTransformConcat(m_windowTransform, *(CGAffineTransform*) matrix.GetNativeMatrix());
+        m_windowTransform = CGAffineTransformConcat(*(CGAffineTransform*) matrix.GetNativeMatrix(), m_windowTransform);

 }
 
 // sets the transform of this context
 }
 
 // sets the transform of this context


@@ -2442,14 +2759,16 @@ public :
 
     virtual wxGraphicsBrush CreateBrush(const wxBrush& brush ) ;
 
 
     virtual wxGraphicsBrush CreateBrush(const wxBrush& brush ) ;
 

-    // sets the brush to a linear gradient, starting at (x1,y1) with color c1 to (x2,y2) with color c2
-    virtual wxGraphicsBrush CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
-        const wxColour&c1, const wxColour&c2) ;
+    virtual wxGraphicsBrush
+    CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
+                              wxDouble x2, wxDouble y2,
+                              const wxGraphicsGradientStops& stops);

 
 

-    // sets the brush to a radial gradient originating at (xo,yc) with color oColor and ends on a circle around (xc,yc)
-    // with radius r and color cColor
-    virtual wxGraphicsBrush CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
-        const wxColour &oColor, const wxColour &cColor) ;
+    virtual wxGraphicsBrush
+    CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
+                              wxDouble xc, wxDouble yc,
+                              wxDouble radius,
+                              const wxGraphicsGradientStops& stops);

 
    // sets the font
     virtual wxGraphicsFont CreateFont( const wxFont &font , const wxColour &col = *wxBLACK ) ;
 
    // sets the font
     virtual wxGraphicsFont CreateFont( const wxFont &font , const wxColour &col = *wxBLACK ) ;


@@ -2457,6 +2776,9 @@ public :
     // create a native bitmap representation
     virtual wxGraphicsBitmap CreateBitmap( const wxBitmap &bitmap ) ;
 
     // create a native bitmap representation
     virtual wxGraphicsBitmap CreateBitmap( const wxBitmap &bitmap ) ;
 

+    // create a graphics bitmap from a native bitmap
+    virtual wxGraphicsBitmap CreateBitmapFromNativeBitmap( void* bitmap );
+

     // create a native bitmap representation
     virtual wxGraphicsBitmap CreateSubBitmap( const wxGraphicsBitmap &bitmap, wxDouble x, wxDouble y, wxDouble w, wxDouble h  ) ;
 private :
     // create a native bitmap representation
     virtual wxGraphicsBitmap CreateSubBitmap( const wxGraphicsBitmap &bitmap, wxDouble x, wxDouble y, wxDouble w, wxDouble h  ) ;
 private :


@@ -2490,8 +2812,12 @@ wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContext( const wxWindowDC&
         if (win_impl->GetWindow())
             cgctx =  (CGContextRef)(win_impl->GetWindow()->MacGetCGContextRef());
 
         if (win_impl->GetWindow())
             cgctx =  (CGContextRef)(win_impl->GetWindow()->MacGetCGContextRef());
 

-        if (cgctx != 0)
-            return new wxMacCoreGraphicsContext( this, cgctx, (wxDouble) w, (wxDouble) h );
+        // having a cgctx being NULL is fine (will be created on demand)
+        // this is the case for all wxWindowDCs except wxPaintDC
+        wxMacCoreGraphicsContext *context = 
+            new wxMacCoreGraphicsContext( this, cgctx, (wxDouble) w, (wxDouble) h );
+        context->EnableOffset(true);
+        return context;

     }
     return NULL;
 }
     }
     return NULL;
 }


@@ -2505,8 +2831,10 @@ wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContext( const wxMemoryDC&
     {
         int w, h;
         mem_impl->GetSize( &w, &h );
     {
         int w, h;
         mem_impl->GetSize( &w, &h );

-        return new wxMacCoreGraphicsContext( this,
+        wxMacCoreGraphicsContext* context = new wxMacCoreGraphicsContext( this,

             (CGContextRef)(mem_impl->GetGraphicsContext()->GetNativeContext()), (wxDouble) w, (wxDouble) h );
             (CGContextRef)(mem_impl->GetGraphicsContext()->GetNativeContext()), (wxDouble) w, (wxDouble) h );

+        context->EnableOffset(true);
+        return context;

     }
 #endif
     return NULL;
     }
 #endif
     return NULL;


@@ -2538,8 +2866,11 @@ wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContextFromNativeContext( v
 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContextFromNativeWindow( void * window )
 {
 #if wxOSX_USE_CARBON
 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContextFromNativeWindow( void * window )
 {
 #if wxOSX_USE_CARBON

-    return new wxMacCoreGraphicsContext(this,(WindowRef)window);
+    wxMacCoreGraphicsContext* context = new wxMacCoreGraphicsContext(this,(WindowRef)window);
+    context->EnableOffset(true);
+    return context;

 #else
 #else

+    wxUnusedVar(window);

     return NULL;
 #endif
 }
     return NULL;
 #endif
 }


@@ -2578,7 +2909,7 @@ wxGraphicsMatrix wxMacCoreGraphicsRenderer::CreateMatrix( wxDouble a, wxDouble b
 
 wxGraphicsPen wxMacCoreGraphicsRenderer::CreatePen(const wxPen& pen)
 {
 
 wxGraphicsPen wxMacCoreGraphicsRenderer::CreatePen(const wxPen& pen)
 {

-    if ( !pen.Ok() || pen.GetStyle() == wxTRANSPARENT )
+    if ( !pen.IsOk() || pen.GetStyle() == wxTRANSPARENT )

         return wxNullGraphicsPen;
     else
     {
         return wxNullGraphicsPen;
     else
     {


@@ -2590,7 +2921,7 @@ wxGraphicsPen wxMacCoreGraphicsRenderer::CreatePen(const wxPen& pen)
 
 wxGraphicsBrush wxMacCoreGraphicsRenderer::CreateBrush(const wxBrush& brush )
 {
 
 wxGraphicsBrush wxMacCoreGraphicsRenderer::CreateBrush(const wxBrush& brush )
 {

-    if ( !brush.Ok() || brush.GetStyle() == wxTRANSPARENT )
+    if ( !brush.IsOk() || brush.GetStyle() == wxTRANSPARENT )

         return wxNullGraphicsBrush;
     else
     {
         return wxNullGraphicsBrush;
     else
     {


@@ -2602,12 +2933,22 @@ wxGraphicsBrush wxMacCoreGraphicsRenderer::CreateBrush(const wxBrush& brush )
 
 wxGraphicsBitmap wxMacCoreGraphicsRenderer::CreateBitmap( const wxBitmap& bmp )
 {
 
 wxGraphicsBitmap wxMacCoreGraphicsRenderer::CreateBitmap( const wxBitmap& bmp )
 {

-    if ( bmp.Ok() )
+    if ( bmp.IsOk() )

     {
         wxGraphicsBitmap p;
     {
         wxGraphicsBitmap p;

-#ifdef __WXMAC__

         p.SetRefData(new wxMacCoreGraphicsBitmapData( this , bmp.CreateCGImage(), bmp.GetDepth() == 1 ) );
         p.SetRefData(new wxMacCoreGraphicsBitmapData( this , bmp.CreateCGImage(), bmp.GetDepth() == 1 ) );

-#endif
+        return p;
+    }
+    else
+        return wxNullGraphicsBitmap;
+}
+
+wxGraphicsBitmap wxMacCoreGraphicsRenderer::CreateBitmapFromNativeBitmap( void* bitmap )
+{
+    if ( bitmap != NULL )
+    {
+        wxGraphicsBitmap p;
+        p.SetRefData(new wxMacCoreGraphicsBitmapData( this , (CGImageRef) bitmap, false ));

         return p;
     }
     else
         return p;
     }
     else


@@ -2629,25 +2970,27 @@ wxGraphicsBitmap wxMacCoreGraphicsRenderer::CreateSubBitmap( const wxGraphicsBit
         return wxNullGraphicsBitmap;
 }
 
         return wxNullGraphicsBitmap;
 }
 

-// sets the brush to a linear gradient, starting at (x1,y1) with color c1 to (x2,y2) with color c2
-wxGraphicsBrush wxMacCoreGraphicsRenderer::CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
-    const wxColour&c1, const wxColour&c2)
+wxGraphicsBrush
+wxMacCoreGraphicsRenderer::CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
+                                                     wxDouble x2, wxDouble y2,
+                                                     const wxGraphicsGradientStops& stops)

 {
     wxGraphicsBrush p;
     wxMacCoreGraphicsBrushData* d = new wxMacCoreGraphicsBrushData( this );
 {
     wxGraphicsBrush p;
     wxMacCoreGraphicsBrushData* d = new wxMacCoreGraphicsBrushData( this );

-    d->CreateLinearGradientBrush(x1, y1, x2, y2, c1, c2);
+    d->CreateLinearGradientBrush(x1, y1, x2, y2, stops);

     p.SetRefData(d);
     return p;
 }
 
     p.SetRefData(d);
     return p;
 }
 

-// sets the brush to a radial gradient originating at (xo,yc) with color oColor and ends on a circle around (xc,yc)
-// with radius r and color cColor
-wxGraphicsBrush wxMacCoreGraphicsRenderer::CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
-    const wxColour &oColor, const wxColour &cColor)
+wxGraphicsBrush
+wxMacCoreGraphicsRenderer::CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
+                                                     wxDouble xc, wxDouble yc,
+                                                     wxDouble radius,
+                                                     const wxGraphicsGradientStops& stops)

 {
     wxGraphicsBrush p;
     wxMacCoreGraphicsBrushData* d = new wxMacCoreGraphicsBrushData( this );
 {
     wxGraphicsBrush p;
     wxMacCoreGraphicsBrushData* d = new wxMacCoreGraphicsBrushData( this );

-    d->CreateRadialGradientBrush(xo,yo,xc,yc,radius,oColor,cColor);
+    d->CreateRadialGradientBrush(xo, yo, xc, yc, radius, stops);

     p.SetRefData(d);
     return p;
 }
     p.SetRefData(d);
     return p;
 }


@@ -2655,7 +2998,7 @@ wxGraphicsBrush wxMacCoreGraphicsRenderer::CreateRadialGradientBrush( wxDouble x
 // sets the font
 wxGraphicsFont wxMacCoreGraphicsRenderer::CreateFont( const wxFont &font , const wxColour &col )
 {
 // sets the font
 wxGraphicsFont wxMacCoreGraphicsRenderer::CreateFont( const wxFont &font , const wxColour &col )
 {

-    if ( font.Ok() )
+    if ( font.IsOk() )

     {
         wxGraphicsFont p;
         p.SetRefData(new wxMacCoreGraphicsFontData( this , font, col ));
     {
         wxGraphicsFont p;
         p.SetRefData(new wxMacCoreGraphicsFontData( this , font, col ));