use correct scale when drawing

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

diff --git a/src/osx/carbon/graphics.cpp b/src/osx/carbon/graphics.cpp
index 8f4e0cde52a9871600fd2aedc1d4c6f6471c2949..c42ffba7f76ec97ca77bdd9294b55fafbe8baddd 100644 (file)
--- a/src/osx/carbon/graphics.cpp
+++ b/src/osx/carbon/graphics.cpp
@@ -1,5 +1,5 @@
 /////////////////////////////////////////////////////////////////////////////
 /////////////////////////////////////////////////////////////////////////////

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

 // Purpose:     wxDC class
 // Author:      Stefan Csomor
 // Modified by:
 // Purpose:     wxDC class
 // Author:      Stefan Csomor
 // Modified by:


@@ -113,11 +113,9 @@ extern "C"
 // constants
 //-----------------------------------------------------------------------------
 
 // constants
 //-----------------------------------------------------------------------------
 

-#if !defined( __DARWIN__ ) || defined(__MWERKS__)

 #ifndef M_PI
 const double M_PI = 3.14159265358979;
 #endif
 #ifndef M_PI
 const double M_PI = 3.14159265358979;
 #endif

-#endif

 
 static const double RAD2DEG = 180.0 / M_PI;
 
 
 static const double RAD2DEG = 180.0 / M_PI;
 


@@ -149,26 +147,13 @@ OSStatus wxMacDrawCGImage(
 
 CGColorRef wxMacCreateCGColor( const wxColour& col )
 {
 
 CGColorRef wxMacCreateCGColor( const wxColour& col )
 {

-    CGColorRef retval = 0;
-#ifdef __WXMAC__
-    retval = col.CreateCGColor();
-#else
-// TODO add conversion NSColor - CGColorRef (obj-c)
-#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5
-    if ( CGColorCreateGenericRGB )
-        retval = CGColorCreateGenericRGB( col.Red() / 255.0 , col.Green() / 255.0, col.Blue() / 255.0, col.Alpha() / 255.0 );
-    else
-#endif
-    {
-        CGFloat components[4] = { col.Red() / 255.0, col.Green() / 255.0, col.Blue()  / 255.0, col.Alpha() / 255.0 } ;
-        retval = CGColorCreate( wxMacGetGenericRGBColorSpace() , components ) ;
-    }
+    CGColorRef retval = col.CreateCGColor();

 
 

-#endif
+    wxASSERT(retval != NULL);

     return retval;
 }
 
     return retval;
 }
 

-#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5 && wxOSX_USE_CORE_TEXT
+#if wxOSX_USE_CORE_TEXT

 
 CTFontRef wxMacCreateCTFont( const wxFont& font )
 {
 
 CTFontRef wxMacCreateCTFont( const wxFont& font )
 {


@@ -225,7 +210,7 @@ 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


@@ -500,7 +485,7 @@ wxMacCoreGraphicsPenData::wxMacCoreGraphicsPenData( wxGraphicsRenderer* renderer
         case wxPENSTYLE_STIPPLE:
             {
                 wxBitmap* bmp = pen.GetStipple();
         case wxPENSTYLE_STIPPLE:
             {
                 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 ) ) ) );


@@ -647,7 +632,7 @@ 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] ;


@@ -798,9 +783,9 @@ void wxMacCoreGraphicsBrushData::CalculateShadingValues (void *info, const CGFlo
     {
         // Start
         out[0] = stops.comps[0].red;
     {
         // Start
         out[0] = stops.comps[0].red;

-        out[1] = stops.comps[1].green;
-        out[2] = stops.comps[2].blue;
-        out[3] = stops.comps[3].alpha;
+        out[1] = stops.comps[0].green;
+        out[2] = stops.comps[0].blue;
+        out[3] = stops.comps[0].alpha;

     }
     else if (f >= 1.0)
     {
     }
     else if (f >= 1.0)
     {


@@ -826,9 +811,9 @@ void wxMacCoreGraphicsBrushData::CalculateShadingValues (void *info, const CGFlo
         CGFloat fact = diff / range;
 
         out[0] = stops.comps[i - 1].red + (stops.comps[i].red - stops.comps[i - 1].red) * fact;
         CGFloat fact = diff / range;
 
         out[0] = stops.comps[i - 1].red + (stops.comps[i].red - stops.comps[i - 1].red) * fact;

-        out[0] = stops.comps[i - 1].green + (stops.comps[i].green - stops.comps[i - 1].green) * fact;
-        out[0] = stops.comps[i - 1].blue + (stops.comps[i].blue - stops.comps[i - 1].blue) * fact;
-        out[0] = stops.comps[i - 1].alpha + (stops.comps[i].alpha - stops.comps[i - 1].alpha) * 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;

     }
 }
 
     }
 }
 


@@ -970,20 +955,29 @@ wxMacCoreGraphicsFontData::~wxMacCoreGraphicsFontData()
 #endif
 }
 
 #endif
 }
 

-class wxMacCoreGraphicsBitmapData : public wxGraphicsObjectRefData
+class wxMacCoreGraphicsBitmapData : public wxGraphicsBitmapData

 {
 public:
     wxMacCoreGraphicsBitmapData( wxGraphicsRenderer* renderer, CGImageRef bitmap, bool monochrome );
     ~wxMacCoreGraphicsBitmapData();
 
     virtual CGImageRef GetBitmap() { return m_bitmap; }
 {
 public:
     wxMacCoreGraphicsBitmapData( wxGraphicsRenderer* renderer, CGImageRef bitmap, bool monochrome );
     ~wxMacCoreGraphicsBitmapData();
 
     virtual CGImageRef GetBitmap() { return m_bitmap; }

+    virtual void* GetNativeBitmap() const { return m_bitmap; }

     bool IsMonochrome() { return m_monochrome; }
     bool IsMonochrome() { return m_monochrome; }

+
+#if wxUSE_IMAGE
+    wxImage ConvertToImage() const
+    {
+        return wxBitmap(m_bitmap).ConvertToImage();
+    }
+#endif // wxUSE_IMAGE
+

 private :
     CGImageRef m_bitmap;
     bool m_monochrome;
 };
 
 private :
     CGImageRef m_bitmap;
     bool m_monochrome;
 };
 

-wxMacCoreGraphicsBitmapData::wxMacCoreGraphicsBitmapData( wxGraphicsRenderer* renderer, CGImageRef bitmap, bool monochrome ) : wxGraphicsObjectRefData( renderer ),
+wxMacCoreGraphicsBitmapData::wxMacCoreGraphicsBitmapData( wxGraphicsRenderer* renderer, CGImageRef bitmap, bool monochrome ) : wxGraphicsBitmapData( renderer ),

     m_bitmap(bitmap), m_monochrome(monochrome)
 {
 }
     m_bitmap(bitmap), m_monochrome(monochrome)
 {
 }


@@ -993,6 +987,7 @@ wxMacCoreGraphicsBitmapData::~wxMacCoreGraphicsBitmapData()
     CGImageRelease( m_bitmap );
 }
 
     CGImageRelease( m_bitmap );
 }
 

+

 //
 // Graphics Matrix
 //
 //
 // Graphics Matrix
 //


@@ -1082,7 +1077,7 @@ 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


@@ -1240,7 +1235,7 @@ 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 :


@@ -1384,15 +1379,10 @@ public:
 
     wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer);
 
 
     wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer);
 

-    wxMacCoreGraphicsContext();
-

     ~wxMacCoreGraphicsContext();
 
     void Init();
 
     ~wxMacCoreGraphicsContext();
 
     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();


@@ -1418,6 +1408,8 @@ public:
 
     virtual bool SetAntialiasMode(wxAntialiasMode antialias);
 
 
     virtual bool SetAntialiasMode(wxAntialiasMode antialias);
 

+    virtual bool SetInterpolationQuality(wxInterpolationQuality interpolation);
+    

     virtual bool SetCompositionMode(wxCompositionMode op);
 
     virtual void BeginLayer(wxDouble opacity);
     virtual bool SetCompositionMode(wxCompositionMode op);
 
     virtual void BeginLayer(wxDouble opacity);


@@ -1460,6 +1452,9 @@ 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() )
         {


@@ -1487,13 +1482,19 @@ 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 DrawRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h ); 

 
     void SetNativeContext( CGContextRef cg );
 
 
     void SetNativeContext( CGContextRef cg );
 

-    DECLARE_DYNAMIC_CLASS_NO_COPY(wxMacCoreGraphicsContext)
+    wxDECLARE_NO_COPY_CLASS(wxMacCoreGraphicsContext);

 
 private:
     bool EnsureIsValid();
 
 private:
     bool EnsureIsValid();

+    void CheckInvariants() const;

 
     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 );


@@ -1506,8 +1507,6 @@ 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
     bool m_invisible;
 
 #if wxOSX_USE_COCOA_OR_CARBON


@@ -1531,8 +1530,6 @@ private:
 // wxMacCoreGraphicsContext implementation
 //-----------------------------------------------------------------------------
 
 // wxMacCoreGraphicsContext implementation
 //-----------------------------------------------------------------------------
 

-IMPLEMENT_DYNAMIC_CLASS(wxMacCoreGraphicsContext, wxGraphicsContext)
-

 class wxQuartzOffsetHelper
 {
 public :
 class wxQuartzOffsetHelper
 {
 public :


@@ -1545,6 +1542,11 @@ public :
             m_userOffset = CGContextConvertSizeToUserSpace( m_cg, CGSizeMake( 0.5 , 0.5 ) );
             CGContextTranslateCTM( m_cg, m_userOffset.width , m_userOffset.height );
         }
             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( )
     {
     }
     ~wxQuartzOffsetHelper( )
     {


@@ -1570,6 +1572,8 @@ void wxMacCoreGraphicsContext::Init()
     m_view = NULL;
 #endif
     m_invisible = false;
     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)


@@ -1585,6 +1589,7 @@ wxMacCoreGraphicsContext::wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer
 {
     Init();
     m_windowRef = window;
 {
     Init();
     m_windowRef = window;

+    m_enableOffset = true;

 }
 #endif
 
 }
 #endif
 


@@ -1592,6 +1597,7 @@ 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;


@@ -1628,24 +1634,19 @@ wxMacCoreGraphicsContext::wxMacCoreGraphicsContext(wxGraphicsRenderer* renderer)
     Init();
 }
 
     Init();
 }
 

-wxMacCoreGraphicsContext::wxMacCoreGraphicsContext() : wxGraphicsContext(NULL)
-{
-    Init();
-    wxLogDebug(wxT("Illegal Constructor called"));
-}
-

 wxMacCoreGraphicsContext::~wxMacCoreGraphicsContext()
 {
     SetNativeContext(NULL);
 }
 
 wxMacCoreGraphicsContext::~wxMacCoreGraphicsContext()
 {
     SetNativeContext(NULL);
 }
 

-void wxMacCoreGraphicsContext::GetSize( wxDouble* width, wxDouble* height)
+
+void wxMacCoreGraphicsContext::CheckInvariants() const

 {
 {

-    *width = m_width;
-    *height = m_height;
+    // check invariants here for debugging ...

 }
 
 
 }
 
 

+

 void wxMacCoreGraphicsContext::StartPage( wxDouble width, wxDouble height )
 {
     CGRect r;
 void wxMacCoreGraphicsContext::StartPage( wxDouble width, wxDouble height )
 {
     CGRect r;


@@ -1671,6 +1672,8 @@ void wxMacCoreGraphicsContext::Flush()
 
 bool wxMacCoreGraphicsContext::EnsureIsValid()
 {
 
 bool wxMacCoreGraphicsContext::EnsureIsValid()
 {

+    CheckInvariants();
+    

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


@@ -1704,16 +1707,10 @@ bool wxMacCoreGraphicsContext::EnsureIsValid()
         if ( m_cgContext )
         {
             CGContextSaveGState( m_cgContext );
         if ( m_cgContext )
         {
             CGContextSaveGState( m_cgContext );

-            CGContextConcatCTM( m_cgContext, m_windowTransform );
-            CGContextSetTextMatrix( m_cgContext, CGAffineTransformIdentity );
-            m_contextSynthesized = true;

 #if wxOSX_USE_COCOA_OR_CARBON
             if ( m_clipRgn.get() )
             {
 #if wxOSX_USE_COCOA_OR_CARBON
             if ( m_clipRgn.get() )
             {

-                // the clip region is in device coordinates, so we convert this again to user coordinates

                 wxCFRef<HIMutableShapeRef> hishape( HIShapeCreateMutableCopy( m_clipRgn ) );
                 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))
                 {
                 // if the shape is empty, HIShapeReplacePathInCGContext doesn't work
                 if ( HIShapeIsEmpty(hishape))
                 {


@@ -1727,6 +1724,9 @@ bool wxMacCoreGraphicsContext::EnsureIsValid()
                 }
             }
 #endif
                 }
             }
 #endif

+            CGContextConcatCTM( m_cgContext, m_windowTransform );
+            CGContextSetTextMatrix( m_cgContext, CGAffineTransformIdentity );
+            m_contextSynthesized = true;

             CGContextSaveGState( m_cgContext );
 
 #if 0 // turn on for debugging of clientdc
             CGContextSaveGState( m_cgContext );
 
 #if 0 // turn on for debugging of clientdc


@@ -1747,6 +1747,8 @@ bool wxMacCoreGraphicsContext::EnsureIsValid()
 #endif
         }
     }
 #endif
         }
     }

+    CheckInvariants();
+

     return m_cgContext != NULL;
 }
 
     return m_cgContext != NULL;
 }
 


@@ -1773,6 +1775,47 @@ bool wxMacCoreGraphicsContext::SetAntialiasMode(wxAntialiasMode antialias)
             return false;
     }
     CGContextSetShouldAntialias(m_cgContext, antialiasMode);
             return false;
     }
     CGContextSetShouldAntialias(m_cgContext, antialiasMode);

+    CheckInvariants();
+    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
+            quality = kCGInterpolationMedium;
+#endif
+            break;
+        case wxINTERPOLATION_BEST:
+            quality = kCGInterpolationHigh;
+            break;
+        default:
+            return false;
+    }
+    CGContextSetInterpolationQuality(m_cgContext, quality);
+    CheckInvariants();

     return true;
 }
 
     return true;
 }
 


@@ -1789,8 +1832,8 @@ bool wxMacCoreGraphicsContext::SetCompositionMode(wxCompositionMode op)
     if (m_composition == wxCOMPOSITION_DEST)
         return true;
 
     if (m_composition == wxCOMPOSITION_DEST)
         return true;
 

-#if wxOSX_USE_COCOA_OR_CARBON
-    if ( UMAGetSystemVersion() < 0x1060 )
+    // TODO REMOVE if we don't need it because of bugs in 10.5
+#if 0

     {
         CGCompositeOperation cop = kCGCompositeOperationSourceOver;
         CGBlendMode mode = kCGBlendModeNormal;
     {
         CGCompositeOperation cop = kCGCompositeOperationSourceOver;
         CGBlendMode mode = kCGBlendModeNormal;


@@ -1829,11 +1872,9 @@ bool wxMacCoreGraphicsContext::SetCompositionMode(wxCompositionMode op)
         case wxCOMPOSITION_XOR:
             cop = kCGCompositeOperationXOR;
             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;
         case wxCOMPOSITION_ADD:
             mode = kCGBlendModePlusLighter ;
             break;

-#endif

         default:
             return false;
         }
         default:
             return false;
         }


@@ -1843,8 +1884,6 @@ bool wxMacCoreGraphicsContext::SetCompositionMode(wxCompositionMode op)
             CGContextSetBlendMode(m_cgContext, mode);
     }
 #endif
             CGContextSetBlendMode(m_cgContext, mode);
     }
 #endif

-#if MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_5
-    else

     {
         CGBlendMode mode = kCGBlendModeNormal;
         switch( op )
     {
         CGBlendMode mode = kCGBlendModeNormal;
         switch( op )


@@ -1880,7 +1919,7 @@ bool wxMacCoreGraphicsContext::SetCompositionMode(wxCompositionMode op)
            mode = kCGBlendModeDestinationAtop;
             break;
         case wxCOMPOSITION_XOR:
            mode = kCGBlendModeDestinationAtop;
             break;
         case wxCOMPOSITION_XOR:

-            mode = kCGBlendModeXOR;
+            mode = kCGBlendModeExclusion; // Not kCGBlendModeXOR!

             break;
 
         case wxCOMPOSITION_ADD:
             break;
 
         case wxCOMPOSITION_ADD:


@@ -1891,25 +1930,31 @@ bool wxMacCoreGraphicsContext::SetCompositionMode(wxCompositionMode op)
         }
         CGContextSetBlendMode(m_cgContext, mode);
     }
         }
         CGContextSetBlendMode(m_cgContext, mode);
     }

-#endif
+
+    CheckInvariants();

     return true;
 }
 
 void wxMacCoreGraphicsContext::BeginLayer(wxDouble opacity)
 {
     return true;
 }
 
 void wxMacCoreGraphicsContext::BeginLayer(wxDouble opacity)
 {

+    CheckInvariants();

     CGContextSaveGState(m_cgContext);
     CGContextSetAlpha(m_cgContext, (CGFloat) opacity);
     CGContextBeginTransparencyLayer(m_cgContext, 0);
     CGContextSaveGState(m_cgContext);
     CGContextSetAlpha(m_cgContext, (CGFloat) opacity);
     CGContextBeginTransparencyLayer(m_cgContext, 0);

+    CheckInvariants();

 }
 
 void wxMacCoreGraphicsContext::EndLayer()
 {
 }
 
 void wxMacCoreGraphicsContext::EndLayer()
 {

+    CheckInvariants();

     CGContextEndTransparencyLayer(m_cgContext);
     CGContextRestoreGState(m_cgContext);
     CGContextEndTransparencyLayer(m_cgContext);
     CGContextRestoreGState(m_cgContext);

+    CheckInvariants();

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

+    CheckInvariants();

 #if wxOSX_USE_COCOA_OR_CARBON
     if( m_cgContext )
     {
 #if wxOSX_USE_COCOA_OR_CARBON
     if( m_cgContext )
     {


@@ -1940,11 +1985,13 @@ void wxMacCoreGraphicsContext::Clip( const wxRegion &region )
     // allow usage as measuring context
     // wxASSERT_MSG( m_cgContext != NULL, "Needs a valid context for clipping" );
 #endif
     // allow usage as measuring context
     // wxASSERT_MSG( m_cgContext != NULL, "Needs a valid context for clipping" );
 #endif

+    CheckInvariants();    

 }
 
 // clips drawings to the rect
 void wxMacCoreGraphicsContext::Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
 {
 }
 
 // clips drawings to the rect
 void wxMacCoreGraphicsContext::Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
 {

+    CheckInvariants();

     CGRect r = CGRectMake( (CGFloat) x , (CGFloat) y , (CGFloat) w , (CGFloat) h );
     if ( m_cgContext )
     {
     CGRect r = CGRectMake( (CGFloat) x , (CGFloat) y , (CGFloat) w , (CGFloat) h );
     if ( m_cgContext )
     {


@@ -1956,12 +2003,14 @@ 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
     // wxFAIL_MSG( "Needs a valid context for clipping" );
 #endif
     }
         m_clipRgn.reset(HIShapeCreateWithRect(&r));
 #else
     // allow usage as measuring context
     // wxFAIL_MSG( "Needs a valid context for clipping" );
 #endif
     }

+    CheckInvariants();    

 }
 
     // resets the clipping to original extent
 }
 
     // resets the clipping to original extent


@@ -1988,6 +2037,7 @@ void wxMacCoreGraphicsContext::ResetClip()
     // wxFAIL_MSG( "Needs a valid context for clipping" );
 #endif
     }
     // wxFAIL_MSG( "Needs a valid context for clipping" );
 #endif
     }

+    CheckInvariants();    

 }
 
 void wxMacCoreGraphicsContext::StrokePath( const wxGraphicsPath &path )
 }
 
 void wxMacCoreGraphicsContext::StrokePath( const wxGraphicsPath &path )


@@ -2006,6 +2056,8 @@ void wxMacCoreGraphicsContext::StrokePath( const wxGraphicsPath &path )
     ((wxMacCoreGraphicsPenData*)m_pen.GetRefData())->Apply(this);
     CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
     CGContextStrokePath( m_cgContext );
     ((wxMacCoreGraphicsPenData*)m_pen.GetRefData())->Apply(this);
     CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
     CGContextStrokePath( m_cgContext );

+    
+    CheckInvariants();

 }
 
 void wxMacCoreGraphicsContext::DrawPath( const wxGraphicsPath &path , wxPolygonFillMode fillStyle )
 }
 
 void wxMacCoreGraphicsContext::DrawPath( const wxGraphicsPath &path , wxPolygonFillMode fillStyle )


@@ -2059,6 +2111,8 @@ void wxMacCoreGraphicsContext::DrawPath( const wxGraphicsPath &path , wxPolygonF
 
     CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
     CGContextDrawPath( m_cgContext , mode );
 
     CGContextAddPath( m_cgContext , (CGPathRef) path.GetNativePath() );
     CGContextDrawPath( m_cgContext , mode );

+    
+    CheckInvariants();

 }
 
 void wxMacCoreGraphicsContext::FillPath( const wxGraphicsPath &path , wxPolygonFillMode fillStyle )
 }
 
 void wxMacCoreGraphicsContext::FillPath( const wxGraphicsPath &path , wxPolygonFillMode fillStyle )


@@ -2089,6 +2143,8 @@ void wxMacCoreGraphicsContext::FillPath( const wxGraphicsPath &path , wxPolygonF
         else
             CGContextFillPath( m_cgContext );
     }
         else
             CGContextFillPath( m_cgContext );
     }

+    
+    CheckInvariants();

 }
 
 void wxMacCoreGraphicsContext::SetNativeContext( CGContextRef cg )
 }
 
 void wxMacCoreGraphicsContext::SetNativeContext( CGContextRef cg )


@@ -2098,6 +2154,7 @@ void wxMacCoreGraphicsContext::SetNativeContext( CGContextRef cg )
 
     if ( m_cgContext )
     {
 
     if ( m_cgContext )
     {

+        CheckInvariants();

         CGContextRestoreGState( m_cgContext );
         CGContextRestoreGState( m_cgContext );
         if ( m_contextSynthesized )
         CGContextRestoreGState( m_cgContext );
         CGContextRestoreGState( m_cgContext );
         if ( m_contextSynthesized )


@@ -2171,12 +2228,12 @@ void wxMacCoreGraphicsContext::DrawBitmap( const wxGraphicsBitmap &bmp, wxDouble
         return;
 
 #ifdef __WXMAC__
         return;
 
 #ifdef __WXMAC__

-    wxMacCoreGraphicsBitmapData* refdata  =static_cast<wxMacCoreGraphicsBitmapData*>(bmp.GetRefData());
+    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 )
     {
     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() )


@@ -2202,6 +2259,8 @@ void wxMacCoreGraphicsContext::DrawBitmap( const wxGraphicsBitmap &bmp, wxDouble
         wxMacDrawCGImage( m_cgContext , &r , image );
     }
 #endif
         wxMacDrawCGImage( m_cgContext , &r , image );
     }
 #endif

+    
+    CheckInvariants();

 }
 
 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 )


@@ -2212,15 +2271,17 @@ void wxMacCoreGraphicsContext::DrawIcon( const wxIcon &icon, wxDouble x, wxDoubl
     if (m_composition == wxCOMPOSITION_DEST)
         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 );
 #if wxOSX_USE_COCOA_OR_CARBON
     CGContextSaveGState( m_cgContext );
     CGContextTranslateCTM( m_cgContext,(CGFloat) x ,(CGFloat) (y + h) );
     CGContextScaleCTM( m_cgContext, 1, -1 );
 #if wxOSX_USE_COCOA_OR_CARBON

+    CGRect r = CGRectMake( (CGFloat) 0.0 , (CGFloat) 0.0 , (CGFloat) w , (CGFloat) h );

     PlotIconRefInContext( m_cgContext , &r , kAlignNone , kTransformNone ,
         NULL , kPlotIconRefNormalFlags , icon.GetHICON() );
 #endif
     CGContextRestoreGState( m_cgContext );
     PlotIconRefInContext( m_cgContext , &r , kAlignNone , kTransformNone ,
         NULL , kPlotIconRefNormalFlags , icon.GetHICON() );
 #endif
     CGContextRestoreGState( m_cgContext );

+    
+    CheckInvariants();

 }
 
 void wxMacCoreGraphicsContext::PushState()
 }
 
 void wxMacCoreGraphicsContext::PushState()


@@ -2250,16 +2311,21 @@ void wxMacCoreGraphicsContext::DoDrawText( const wxString &str, wxDouble x, wxDo
         return;
 
 #if wxOSX_USE_CORE_TEXT
         return;
 
 #if wxOSX_USE_CORE_TEXT

-    if ( UMAGetSystemVersion() >= 0x1050 )

     {
         wxMacCoreGraphicsFontData* fref = (wxMacCoreGraphicsFontData*)m_font.GetRefData();
         wxCFStringRef text(str, wxLocale::GetSystemEncoding() );
         CTFontRef font = fref->OSXGetCTFont();
         CGColorRef col = wxMacCreateCGColor( fref->GetColour() );
     {
         wxMacCoreGraphicsFontData* fref = (wxMacCoreGraphicsFontData*)m_font.GetRefData();
         wxCFStringRef text(str, wxLocale::GetSystemEncoding() );
         CTFontRef font = fref->OSXGetCTFont();
         CGColorRef col = wxMacCreateCGColor( fref->GetColour() );

+#if 0
+        // right now there's no way to get continuous underlines, only words, so we emulate it

         CTUnderlineStyle ustyle = fref->GetUnderlined() ? kCTUnderlineStyleSingle : kCTUnderlineStyleNone ;
         wxCFRef<CFNumberRef> underlined( CFNumberCreate(NULL, kCFNumberSInt32Type, &ustyle) );
          CFStringRef keys[] = { kCTFontAttributeName , kCTForegroundColorAttributeName, kCTUnderlineStyleAttributeName };
         CFTypeRef values[] = { font, col, underlined };
         CTUnderlineStyle ustyle = fref->GetUnderlined() ? kCTUnderlineStyleSingle : kCTUnderlineStyleNone ;
         wxCFRef<CFNumberRef> underlined( CFNumberCreate(NULL, kCFNumberSInt32Type, &ustyle) );
          CFStringRef keys[] = { kCTFontAttributeName , kCTForegroundColorAttributeName, kCTUnderlineStyleAttributeName };
         CFTypeRef values[] = { font, col, underlined };

+#else
+        CFStringRef keys[] = { kCTFontAttributeName , kCTForegroundColorAttributeName };
+        CFTypeRef values[] = { font, col };
+#endif

         wxCFRef<CFDictionaryRef> attributes( CFDictionaryCreate(kCFAllocatorDefault, (const void**) &keys, (const void**) &values,
                                                         WXSIZEOF( keys ), &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks) );
         wxCFRef<CFAttributedStringRef> attrtext( CFAttributedStringCreate(kCFAllocatorDefault, text, attributes) );
         wxCFRef<CFDictionaryRef> attributes( CFDictionaryCreate(kCFAllocatorDefault, (const void**) &keys, (const void**) &values,
                                                         WXSIZEOF( keys ), &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks) );
         wxCFRef<CFAttributedStringRef> attrtext( CFAttributedStringCreate(kCFAllocatorDefault, text, attributes) );


@@ -2268,12 +2334,30 @@ void wxMacCoreGraphicsContext::DoDrawText( const wxString &str, wxDouble x, wxDo
         y += CTFontGetAscent(font);
 
         CGContextSaveGState(m_cgContext);
         y += CTFontGetAscent(font);
 
         CGContextSaveGState(m_cgContext);

+        CGAffineTransform textMatrix = CGContextGetTextMatrix(m_cgContext);
+        

         CGContextTranslateCTM(m_cgContext, (CGFloat) x, (CGFloat) y);
         CGContextScaleCTM(m_cgContext, 1, -1);
         CGContextTranslateCTM(m_cgContext, (CGFloat) x, (CGFloat) y);
         CGContextScaleCTM(m_cgContext, 1, -1);

-        CGContextSetTextPosition(m_cgContext, 0, 0);
+        CGContextSetTextMatrix(m_cgContext, CGAffineTransformIdentity);
+        

         CTLineDraw( line, m_cgContext );
         CTLineDraw( line, m_cgContext );

+        
+        if ( fref->GetUnderlined() ) {
+            //AKT: draw horizontal line 1 pixel thick and with 1 pixel gap under baseline
+            CGFloat width = CTLineGetTypographicBounds(line, NULL, NULL, NULL);
+
+            CGPoint points[] = { {0.0, -2.0},  {width, -2.0} };
+            
+            CGContextSetStrokeColorWithColor(m_cgContext, col);
+            CGContextSetShouldAntialias(m_cgContext, false);
+            CGContextSetLineWidth(m_cgContext, 1.0);
+            CGContextStrokeLineSegments(m_cgContext, points, 2);
+        }
+        

         CGContextRestoreGState(m_cgContext);
         CGContextRestoreGState(m_cgContext);

-        CFRelease( col );
+        CGContextSetTextMatrix(m_cgContext, textMatrix);
+        CGColorRelease( col );
+        CheckInvariants();

         return;
     }
 #endif
         return;
     }
 #endif


@@ -2298,6 +2382,8 @@ void wxMacCoreGraphicsContext::DoDrawText( const wxString &str, wxDouble x, wxDo
     CGContextRestoreGState(m_cgContext);
     CFRelease( col );
 #endif
     CGContextRestoreGState(m_cgContext);
     CFRelease( col );
 #endif

+    
+    CheckInvariants();

 }
 
 void wxMacCoreGraphicsContext::DoDrawRotatedText(const wxString &str,
 }
 
 void wxMacCoreGraphicsContext::DoDrawRotatedText(const wxString &str,


@@ -2313,7 +2399,6 @@ void wxMacCoreGraphicsContext::DoDrawRotatedText(const wxString &str,
         return;
 
 #if wxOSX_USE_CORE_TEXT
         return;
 
 #if wxOSX_USE_CORE_TEXT

-    if ( UMAGetSystemVersion() >= 0x1050 )

     {
         // default implementation takes care of rotation and calls non rotated DrawText afterwards
         wxGraphicsContext::DoDrawRotatedText( str, x, y, angle );
     {
         // default implementation takes care of rotation and calls non rotated DrawText afterwards
         wxGraphicsContext::DoDrawRotatedText( str, x, y, angle );


@@ -2382,8 +2467,8 @@ 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 );


@@ -2400,6 +2485,7 @@ void wxMacCoreGraphicsContext::DoDrawRotatedText(const wxString &str,
         CGContextRestoreGState(m_cgContext);
 
         ::ATSUDisposeTextLayout(atsuLayout);
         CGContextRestoreGState(m_cgContext);
 
         ::ATSUDisposeTextLayout(atsuLayout);

+        CheckInvariants();

 
         return;
     }
 
         return;
     }


@@ -2408,6 +2494,8 @@ void wxMacCoreGraphicsContext::DoDrawRotatedText(const wxString &str,
     // default implementation takes care of rotation and calls non rotated DrawText afterwards
     wxGraphicsContext::DoDrawRotatedText( str, x, y, angle );
 #endif
     // default implementation takes care of rotation and calls non rotated DrawText afterwards
     wxGraphicsContext::DoDrawRotatedText( str, x, y, angle );
 #endif

+    
+    CheckInvariants();

 }
 
 void wxMacCoreGraphicsContext::GetTextExtent( const wxString &str, wxDouble *width, wxDouble *height,
 }
 
 void wxMacCoreGraphicsContext::GetTextExtent( const wxString &str, wxDouble *width, wxDouble *height,


@@ -2428,7 +2516,6 @@ void wxMacCoreGraphicsContext::GetTextExtent( const wxString &str, wxDouble *wid
         return;
 
 #if wxOSX_USE_CORE_TEXT
         return;
 
 #if wxOSX_USE_CORE_TEXT

-    if ( UMAGetSystemVersion() >= 0x1050 )

     {
         wxMacCoreGraphicsFontData* fref = (wxMacCoreGraphicsFontData*)m_font.GetRefData();
         CTFontRef font = fref->OSXGetCTFont();
     {
         wxMacCoreGraphicsFontData* fref = (wxMacCoreGraphicsFontData*)m_font.GetRefData();
         CTFontRef font = fref->OSXGetCTFont();


@@ -2441,13 +2528,8 @@ 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) );
 

-        // round the returned extent: this is probably more correct anyhow but
-        // we also need to do it to be consistent with GetPartialTextExtents()
-        // below and avoid strange situation when the last partial extent
-        // returned by it could have been greater than the full extent returned
-        // by us
-        CGFloat a, d, l;
-        int w = CTLineGetTypographicBounds(line, &a, &d, &l) + 0.5;
+        CGFloat a, d, l, w;
+        w = CTLineGetTypographicBounds(line, &a, &d, &l);

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


@@ -2484,13 +2566,13 @@ 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);
 


@@ -2507,13 +2589,15 @@ 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 ( width )
         *width = sz.width;
 #endif
     if ( externalLeading )
         *externalLeading = 0;
         */
     if ( width )
         *width = sz.width;
 #endif

+    
+    CheckInvariants();    

 }
 
 void wxMacCoreGraphicsContext::GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const
 }
 
 void wxMacCoreGraphicsContext::GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const


@@ -2578,7 +2662,7 @@ 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


@@ -2598,7 +2682,7 @@ 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 );

             }
         }
 
             }
         }
 


@@ -2612,6 +2696,8 @@ void wxMacCoreGraphicsContext::GetPartialTextExtents(const wxString& text, wxArr
 #if wxOSX_USE_IPHONE
     // TODO core graphics text implementation here
 #endif
 #if wxOSX_USE_IPHONE
     // TODO core graphics text implementation here
 #endif

+    
+    CheckInvariants();

 }
 
 void * wxMacCoreGraphicsContext::GetNativeContext()
 }
 
 void * wxMacCoreGraphicsContext::GetNativeContext()


@@ -2619,18 +2705,50 @@ void * wxMacCoreGraphicsContext::GetNativeContext()
     return m_cgContext;
 }
 
     return m_cgContext;
 }
 

+
+void wxMacCoreGraphicsContext::DrawRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
+{
+    if (!EnsureIsValid())
+        return;
+
+    if (m_composition == wxCOMPOSITION_DEST) 
+        return; 
+
+    // when using shading, we have to go back to drawing paths 
+    if ( !m_brush.IsNull() && ((wxMacCoreGraphicsBrushData*)m_brush.GetRefData())->IsShading() )
+    {
+        wxGraphicsContext::DrawRectangle( x,y,w,h );
+        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
 void wxMacCoreGraphicsContext::SetTransform( const wxGraphicsMatrix& matrix )
 {
 }
 
 // sets the transform of this context
 void wxMacCoreGraphicsContext::SetTransform( const wxGraphicsMatrix& matrix )
 {

+    CheckInvariants();

     if ( m_cgContext )
     {
         CGAffineTransform transform = CGContextGetCTM( m_cgContext );
     if ( m_cgContext )
     {
         CGAffineTransform transform = CGContextGetCTM( m_cgContext );


@@ -2642,6 +2760,7 @@ void wxMacCoreGraphicsContext::SetTransform( const wxGraphicsMatrix& matrix )
     {
         m_windowTransform = *(CGAffineTransform*) matrix.GetNativeMatrix();
     }
     {
         m_windowTransform = *(CGAffineTransform*) matrix.GetNativeMatrix();
     }

+    CheckInvariants();

 }
 
 // gets the matrix of this context
 }
 
 // gets the matrix of this context


@@ -2653,6 +2772,49 @@ wxGraphicsMatrix wxMacCoreGraphicsContext::GetTransform() const
     return m;
 }
 
     return m;
 }
 

+
+#if wxUSE_IMAGE
+
+// ----------------------------------------------------------------------------
+// wxMacCoreGraphicsImageContext
+// ----------------------------------------------------------------------------
+
+// This is a GC that can be used to draw on wxImage. In this implementation we
+// simply draw on a wxBitmap using wxMemoryDC and then convert it to wxImage in
+// the end so it's not especially interesting and exists mainly for
+// compatibility with the other platforms.
+class wxMacCoreGraphicsImageContext : public wxMacCoreGraphicsContext
+{
+public:
+    wxMacCoreGraphicsImageContext(wxGraphicsRenderer* renderer,
+                                  wxImage& image) :
+        wxMacCoreGraphicsContext(renderer),
+        m_image(image),
+        m_bitmap(image),
+        m_memDC(m_bitmap)
+    {
+        SetNativeContext
+        (
+            (CGContextRef)(m_memDC.GetGraphicsContext()->GetNativeContext())
+        );
+        m_width = image.GetWidth();
+        m_height = image.GetHeight();
+    }
+
+    virtual ~wxMacCoreGraphicsImageContext()
+    {
+        m_memDC.SelectObject(wxNullBitmap);
+        m_image = m_bitmap.ConvertToImage();
+    }
+
+private:
+    wxImage& m_image;
+    wxBitmap m_bitmap;
+    wxMemoryDC m_memDC;
+};
+
+#endif // wxUSE_IMAGE
+

 //
 // Renderer
 //
 //
 // Renderer
 //


@@ -2682,6 +2844,10 @@ public :
 
     virtual wxGraphicsContext * CreateContext( wxWindow* window );
 
 
     virtual wxGraphicsContext * CreateContext( wxWindow* window );
 

+#if wxUSE_IMAGE
+    virtual wxGraphicsContext * CreateContextFromImage(wxImage& image);
+#endif // wxUSE_IMAGE
+

     virtual wxGraphicsContext * CreateMeasuringContext();
 
     // Path
     virtual wxGraphicsContext * CreateMeasuringContext();
 
     // Path


@@ -2711,10 +2877,19 @@ public :
 
    // 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 ) ;

+    virtual wxGraphicsFont CreateFont(double sizeInPixels,
+                                      const wxString& facename,
+                                      int flags = wxFONTFLAG_DEFAULT,
+                                      const wxColour& col = *wxBLACK);

 
     // create a native bitmap representation
     virtual wxGraphicsBitmap CreateBitmap( const wxBitmap &bitmap ) ;
 
 
     // create a native bitmap representation
     virtual wxGraphicsBitmap CreateBitmap( const wxBitmap &bitmap ) ;
 

+#if wxUSE_IMAGE
+    virtual wxGraphicsBitmap CreateBitmapFromImage(const wxImage& image);
+    virtual wxImage CreateImageFromBitmap(const wxGraphicsBitmap& bmp);
+#endif // wxUSE_IMAGE
+

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


@@ -2751,8 +2926,12 @@ 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;
 }


@@ -2766,8 +2945,10 @@ 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;


@@ -2799,7 +2980,9 @@ 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
     wxUnusedVar(window);
     return NULL;
 #else
     wxUnusedVar(window);
     return NULL;


@@ -2816,6 +2999,16 @@ wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateMeasuringContext()
     return new wxMacCoreGraphicsContext(this);
 }
 
     return new wxMacCoreGraphicsContext(this);
 }
 

+#if wxUSE_IMAGE
+
+wxGraphicsContext*
+wxMacCoreGraphicsRenderer::CreateContextFromImage(wxImage& image)
+{
+    return new wxMacCoreGraphicsImageContext(this, image);
+}
+
+#endif // wxUSE_IMAGE
+

 // Path
 
 wxGraphicsPath wxMacCoreGraphicsRenderer::CreatePath()
 // Path
 
 wxGraphicsPath wxMacCoreGraphicsRenderer::CreatePath()


@@ -2840,7 +3033,7 @@ 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
     {


@@ -2852,7 +3045,7 @@ 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
     {


@@ -2864,7 +3057,7 @@ 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;
         p.SetRefData(new wxMacCoreGraphicsBitmapData( this , bmp.CreateCGImage(), bmp.GetDepth() == 1 ) );
     {
         wxGraphicsBitmap p;
         p.SetRefData(new wxMacCoreGraphicsBitmapData( this , bmp.CreateCGImage(), bmp.GetDepth() == 1 ) );


@@ -2874,6 +3067,28 @@ wxGraphicsBitmap wxMacCoreGraphicsRenderer::CreateBitmap( const wxBitmap& bmp )
         return wxNullGraphicsBitmap;
 }
 
         return wxNullGraphicsBitmap;
 }
 

+#if wxUSE_IMAGE
+
+wxGraphicsBitmap
+wxMacCoreGraphicsRenderer::CreateBitmapFromImage(const wxImage& image)
+{
+    // We don't have any direct way to convert wxImage to CGImage so pass by
+    // wxBitmap. This makes this function pretty useless in this implementation
+    // but it allows to have the same API as with Cairo backend where we can
+    // convert wxImage to a Cairo surface directly, bypassing wxBitmap.
+    return CreateBitmap(wxBitmap(image));
+}
+
+wxImage wxMacCoreGraphicsRenderer::CreateImageFromBitmap(const wxGraphicsBitmap& bmp)
+{
+    wxMacCoreGraphicsBitmapData* const
+        data = static_cast<wxMacCoreGraphicsBitmapData*>(bmp.GetRefData());
+
+    return data ? data->ConvertToImage() : wxNullImage;
+}
+
+#endif // wxUSE_IMAGE
+

 wxGraphicsBitmap wxMacCoreGraphicsRenderer::CreateBitmapFromNativeBitmap( void* bitmap )
 {
     if ( bitmap != NULL )
 wxGraphicsBitmap wxMacCoreGraphicsRenderer::CreateBitmapFromNativeBitmap( void* bitmap )
 {
     if ( bitmap != NULL )


@@ -2926,10 +3141,9 @@ wxMacCoreGraphicsRenderer::CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
     return p;
 }
 
     return p;
 }
 

-// sets the font

 wxGraphicsFont wxMacCoreGraphicsRenderer::CreateFont( const wxFont &font , const wxColour &col )
 {
 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 ));


@@ -2939,6 +3153,32 @@ wxGraphicsFont wxMacCoreGraphicsRenderer::CreateFont( const wxFont &font , const
         return wxNullGraphicsFont;
 }
 
         return wxNullGraphicsFont;
 }
 

+wxGraphicsFont
+wxMacCoreGraphicsRenderer::CreateFont(double sizeInPixels,
+                                      const wxString& facename,
+                                      int flags,
+                                      const wxColour& col)
+{
+    // This implementation is not ideal as we don't support fractional font
+    // sizes right now, but it's the simplest one.
+    //
+    // Notice that under Mac we always use 72 DPI so the font size in pixels is
+    // the same as the font size in points and we can pass it directly to wxFont
+    // ctor.
+    wxFont font(wxRound(sizeInPixels),
+                wxFONTFAMILY_DEFAULT,
+                flags & wxFONTFLAG_ITALIC ? wxFONTSTYLE_ITALIC
+                                          : wxFONTSTYLE_NORMAL,
+                flags & wxFONTFLAG_BOLD ? wxFONTWEIGHT_BOLD
+                                        : wxFONTWEIGHT_NORMAL,
+                (flags & wxFONTFLAG_UNDERLINED) != 0,
+                facename);
+
+    wxGraphicsFont f;
+    f.SetRefData(new wxMacCoreGraphicsFontData(this, font, col));
+    return f;
+}
+

 //
 // CoreGraphics Helper Methods
 //
 //
 // CoreGraphics Helper Methods
 //