Fix crash in wxDC::GetMultiLineTextExtent() after last commit.

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

diff --git a/src/osx/carbon/graphics.cpp b/src/osx/carbon/graphics.cpp
index 5b50bb5ff70bd19a0e5360b4bddddd934fab6092..053481f1ca91b340cafd904acfc2f8c785a0ad6d 100644 (file)
--- a/src/osx/carbon/graphics.cpp
+++ b/src/osx/carbon/graphics.cpp
@@ -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 )
 {


@@ -970,13 +955,14 @@ 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; }
 
 #if wxUSE_IMAGE
     bool IsMonochrome() { return m_monochrome; }
 
 #if wxUSE_IMAGE


@@ -991,7 +977,7 @@ private :
     bool m_monochrome;
 };
 
     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)
 {
 }


@@ -1001,17 +987,6 @@ wxMacCoreGraphicsBitmapData::~wxMacCoreGraphicsBitmapData()
     CGImageRelease( m_bitmap );
 }
 
     CGImageRelease( m_bitmap );
 }
 

-#if wxUSE_IMAGE
-
-wxImage wxGraphicsBitmap::ConvertToImage() const
-{
-    wxMacCoreGraphicsBitmapData* const
-        data = static_cast<wxMacCoreGraphicsBitmapData*>(GetRefData());
-
-    return data ? data->ConvertToImage() : wxNullImage;
-}
-
-#endif // wxUSE_IMAGE

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


@@ -1519,6 +1494,7 @@ public:
 
 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 );


@@ -1664,6 +1640,13 @@ wxMacCoreGraphicsContext::~wxMacCoreGraphicsContext()
 }
 
 
 }
 
 

+void wxMacCoreGraphicsContext::CheckInvariants() const
+{
+    // check invariants here for debugging ...
+}
+
+
+

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


@@ -1689,6 +1672,8 @@ void wxMacCoreGraphicsContext::Flush()
 
 bool wxMacCoreGraphicsContext::EnsureIsValid()
 {
 
 bool wxMacCoreGraphicsContext::EnsureIsValid()
 {

+    CheckInvariants();
+    

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


@@ -1762,6 +1747,8 @@ bool wxMacCoreGraphicsContext::EnsureIsValid()
 #endif
         }
     }
 #endif
         }
     }

+    CheckInvariants();
+

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


@@ -1788,6 +1775,7 @@ bool wxMacCoreGraphicsContext::SetAntialiasMode(wxAntialiasMode antialias)
             return false;
     }
     CGContextSetShouldAntialias(m_cgContext, antialiasMode);
             return false;
     }
     CGContextSetShouldAntialias(m_cgContext, antialiasMode);

+    CheckInvariants();

     return true;
 }
 
     return true;
 }
 


@@ -1827,6 +1815,7 @@ bool wxMacCoreGraphicsContext::SetInterpolationQuality(wxInterpolationQuality in
             return false;
     }
     CGContextSetInterpolationQuality(m_cgContext, quality);
             return false;
     }
     CGContextSetInterpolationQuality(m_cgContext, quality);

+    CheckInvariants();

     return true;
 }
 
     return true;
 }
 


@@ -1843,8 +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;


@@ -1883,11 +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;
         }


@@ -1897,8 +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 )


@@ -1945,25 +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 )
     {


@@ -1994,11 +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 )
     {


@@ -2017,6 +2010,7 @@ void wxMacCoreGraphicsContext::Clip( wxDouble x, wxDouble y, wxDouble w, wxDoubl
     // wxFAIL_MSG( "Needs a valid context for clipping" );
 #endif
     }
     // wxFAIL_MSG( "Needs a valid context for clipping" );
 #endif
     }

+    CheckInvariants();    

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


@@ -2043,6 +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 )


@@ -2061,6 +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 )


@@ -2114,6 +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 )


@@ -2144,6 +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 )


@@ -2153,6 +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 )


@@ -2226,7 +2228,7 @@ 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 )


@@ -2257,6 +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 )


@@ -2267,15 +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()


@@ -2305,7 +2311,6 @@ 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() );
     {
         wxMacCoreGraphicsFontData* fref = (wxMacCoreGraphicsFontData*)m_font.GetRefData();
         wxCFStringRef text(str, wxLocale::GetSystemEncoding() );


@@ -2329,9 +2334,12 @@ 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 );
         
         if ( fref->GetUnderlined() ) {
         CTLineDraw( line, m_cgContext );
         
         if ( fref->GetUnderlined() ) {


@@ -2347,7 +2355,9 @@ void wxMacCoreGraphicsContext::DoDrawText( const wxString &str, wxDouble x, wxDo
         }
         
         CGContextRestoreGState(m_cgContext);
         }
         
         CGContextRestoreGState(m_cgContext);

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

         return;
     }
 #endif
         return;
     }
 #endif


@@ -2372,6 +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,


@@ -2387,7 +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 );


@@ -2474,6 +2485,7 @@ void wxMacCoreGraphicsContext::DoDrawRotatedText(const wxString &str,
         CGContextRestoreGState(m_cgContext);
 
         ::ATSUDisposeTextLayout(atsuLayout);
         CGContextRestoreGState(m_cgContext);
 
         ::ATSUDisposeTextLayout(atsuLayout);

+        CheckInvariants();

 
         return;
     }
 
         return;
     }


@@ -2482,6 +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,


@@ -2502,7 +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();


@@ -2583,6 +2596,8 @@ void wxMacCoreGraphicsContext::GetTextExtent( const wxString &str, wxDouble *wid
     if ( width )
         *width = sz.width;
 #endif
     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


@@ -2681,6 +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()


@@ -2721,6 +2738,7 @@ void wxMacCoreGraphicsContext::ConcatTransform( const wxGraphicsMatrix& matrix )
 // 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 );


@@ -2732,6 +2750,7 @@ 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


@@ -2858,6 +2877,7 @@ public :
 
 #if wxUSE_IMAGE
     virtual wxGraphicsBitmap CreateBitmapFromImage(const wxImage& image);
 
 #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
 #endif // wxUSE_IMAGE
 
     // create a graphics bitmap from a native bitmap


@@ -3049,6 +3069,14 @@ wxMacCoreGraphicsRenderer::CreateBitmapFromImage(const wxImage& image)
     return CreateBitmap(wxBitmap(image));
 }
 
     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 )
 #endif // wxUSE_IMAGE
 
 wxGraphicsBitmap wxMacCoreGraphicsRenderer::CreateBitmapFromNativeBitmap( void* bitmap )