check that the version of __sync_sub_and_fetch that returns a value is supported...

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

diff --git a/src/mac/carbon/graphics.cpp b/src/mac/carbon/graphics.cpp
index d0f3507011873c7a562df08936ca5fa547f01e09..48cd16a9cf42cbd797ba908539d3e5e745864a3c 100644 (file)
--- a/src/mac/carbon/graphics.cpp
+++ b/src/mac/carbon/graphics.cpp
@@ -35,10 +35,6 @@
 
 #include "wx/mac/private.h"
 
 
 #include "wx/mac/private.h"
 

-#if MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_5
-typedef float CGFloat;
-#endif
-

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


@@ -66,8 +62,9 @@ OSStatus wxMacDrawCGImage(
 #ifdef __LP64__
     // todo flip
     CGContextDrawImage(inContext, *inBounds, inImage );
 #ifdef __LP64__
     // todo flip
     CGContextDrawImage(inContext, *inBounds, inImage );

+    return noErr;

 #else
 #else

-    HIViewDrawCGImage( inContext, inBounds, inImage );
+    return HIViewDrawCGImage( inContext, inBounds, inImage );

 #endif
 }
 
 #endif
 }
 


@@ -699,16 +696,37 @@ public:
     wxMacCoreGraphicsFontData( wxGraphicsRenderer* renderer, const wxFont &font, const wxColour& col );
     ~wxMacCoreGraphicsFontData();
 
     wxMacCoreGraphicsFontData( wxGraphicsRenderer* renderer, const wxFont &font, const wxColour& col );
     ~wxMacCoreGraphicsFontData();
 

+#if wxMAC_USE_ATSU_TEXT

     virtual ATSUStyle GetATSUStyle() { return m_macATSUIStyle; }
     virtual ATSUStyle GetATSUStyle() { return m_macATSUIStyle; }

+#endif
+#if wxMAC_USE_CORE_TEXT
+    CTFontRef GetCTFont() const { return m_ctFont ; }
+#endif
+    wxColour GetColour() const { return m_colour ; }
+    
+    bool GetUnderlined() const { return m_underlined ; }

 private :
 private :

+    wxColour m_colour;
+    bool m_underlined;
+#if wxMAC_USE_ATSU_TEXT

     ATSUStyle m_macATSUIStyle;
     ATSUStyle m_macATSUIStyle;

+#endif
+#if wxMAC_USE_CORE_TEXT
+    wxCFRef< CTFontRef > m_ctFont;
+#endif

 };
 
 wxMacCoreGraphicsFontData::wxMacCoreGraphicsFontData(wxGraphicsRenderer* renderer, const wxFont &font, const wxColour& col) : wxGraphicsObjectRefData( renderer )
 {
 };
 
 wxMacCoreGraphicsFontData::wxMacCoreGraphicsFontData(wxGraphicsRenderer* renderer, const wxFont &font, const wxColour& col) : wxGraphicsObjectRefData( renderer )
 {

-    m_macATSUIStyle = NULL;
+    m_colour = col;
+    m_underlined = font.GetUnderlined();

 
 

-    OSStatus status;
+#if wxMAC_USE_CORE_TEXT
+    m_ctFont.reset( wxCFRetain((CTFontRef) font.MacGetCTFont()) );
+#endif
+#if wxMAC_USE_ATSU_TEXT
+    OSStatus status = noErr;
+    m_macATSUIStyle = NULL;

 
     status = ATSUCreateAndCopyStyle( (ATSUStyle) font.MacGetATSUStyle() , &m_macATSUIStyle );
 
 
     status = ATSUCreateAndCopyStyle( (ATSUStyle) font.MacGetATSUStyle() , &m_macATSUIStyle );
 


@@ -740,15 +758,24 @@ wxMacCoreGraphicsFontData::wxMacCoreGraphicsFontData(wxGraphicsRenderer* rendere
         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") );

+#endif
+#if wxMAC_USE_CG_TEXT
+#endif

 }
 
 wxMacCoreGraphicsFontData::~wxMacCoreGraphicsFontData()
 {
 }
 
 wxMacCoreGraphicsFontData::~wxMacCoreGraphicsFontData()
 {

+#if wxMAC_USE_CORE_TEXT
+#endif
+#if wxMAC_USE_ATSU_TEXT

     if ( m_macATSUIStyle )
     {
         ::ATSUDisposeStyle((ATSUStyle)m_macATSUIStyle);
         m_macATSUIStyle = NULL;
     }
     if ( m_macATSUIStyle )
     {
         ::ATSUDisposeStyle((ATSUStyle)m_macATSUIStyle);
         m_macATSUIStyle = NULL;
     }

+#endif
+#if wxMAC_USE_CG_TEXT
+#endif

 }
 
 //
 }
 
 //


@@ -1320,9 +1347,12 @@ wxMacCoreGraphicsContext::wxMacCoreGraphicsContext( wxGraphicsRenderer* renderer
     int originX , originY;
     originX = originY = 0;
     window->MacWindowToRootWindow( &originX , &originY );
     int originX , originY;
     originX = originY = 0;
     window->MacWindowToRootWindow( &originX , &originY );

-    Rect bounds;
-    GetWindowBounds( m_windowRef, kWindowContentRgn, &bounds );

 
 

+    Rect bounds = { 0,0,0,0 };
+#ifdef __LP64__
+#else
+    GetWindowBounds( m_windowRef, kWindowContentRgn, &bounds );
+#endif

     m_windowTransform = CGAffineTransformMakeTranslation( 0 , bounds.bottom - bounds.top );
     m_windowTransform = CGAffineTransformScale( m_windowTransform , 1 , -1 );
     m_windowTransform = CGAffineTransformTranslate( m_windowTransform, originX, originY ) ;
     m_windowTransform = CGAffineTransformMakeTranslation( 0 , bounds.bottom - bounds.top );
     m_windowTransform = CGAffineTransformScale( m_windowTransform , 1 , -1 );
     m_windowTransform = CGAffineTransformTranslate( m_windowTransform, originX, originY ) ;


@@ -1436,18 +1466,14 @@ void wxMacCoreGraphicsContext::Clip( const wxRegion &region )
 {
     if( m_cgContext )
     {
 {
     if( m_cgContext )
     {

-        HIShapeRef shape = HIShapeCreateWithQDRgn( (RgnHandle) region.GetWXHRGN() );
-        HIShapeReplacePathInCGContext( shape, m_cgContext );
+        HIShapeReplacePathInCGContext( region.GetWXHRGN() , m_cgContext );

         CGContextClip( m_cgContext );
         CGContextClip( m_cgContext );

-        CFRelease( shape );

     }
     else
     {
         // this offsetting to device coords is not really correct, but since we cannot apply affine transforms
         // to regions we try at least to have correct translations
     }
     else
     {
         // this offsetting to device coords is not really correct, but since we cannot apply affine transforms
         // to regions we try at least to have correct translations

-        wxMacCFRefHolder<HIShapeRef> hishape ;
-        hishape.Set( HIShapeCreateWithQDRgn( (RgnHandle) region.GetWXHRGN() ));
-        HIMutableShapeRef mutableShape = HIShapeCreateMutableCopy( hishape );
+        HIMutableShapeRef mutableShape = HIShapeCreateMutableCopy( region.GetWXHRGN() );

         
         CGPoint transformedOrigin = CGPointApplyAffineTransform( CGPointZero, m_windowTransform );
         HIShapeOffset( mutableShape, transformedOrigin.x, transformedOrigin.y );
         
         CGPoint transformedOrigin = CGPointApplyAffineTransform( CGPointZero, m_windowTransform );
         HIShapeOffset( mutableShape, transformedOrigin.x, transformedOrigin.y );


@@ -1711,7 +1737,46 @@ void wxMacCoreGraphicsContext::PopState()
 
 void wxMacCoreGraphicsContext::DrawText( const wxString &str, wxDouble x, wxDouble y )
 {
 
 void wxMacCoreGraphicsContext::DrawText( const wxString &str, wxDouble x, wxDouble y )
 {

-    DrawText(str, x, y, 0.0);
+    if ( m_font.IsNull() )
+        return;
+    
+    EnsureIsValid();
+#if wxMAC_USE_CORE_TEXT
+    if ( UMAGetSystemVersion() >= 0x1050 )
+    {
+        wxMacCoreGraphicsFontData* fref = (wxMacCoreGraphicsFontData*)m_font.GetRefData();
+        wxMacCFStringHolder text(str, wxLocale::GetSystemEncoding() );
+        CTFontRef font = fref->GetCTFont();
+        CGColorRef col = fref->GetColour().GetPixel();
+        CTUnderlineStyle ustyle = fref->GetUnderlined() ? kCTUnderlineStyleSingle : kCTUnderlineStyleNone ;
+        wxCFRef<CFNumberRef> underlined( CFNumberCreate(NULL, kCFNumberSInt32Type, &ustyle) ); 
+        CFStringRef keys[] = { kCTFontAttributeName , kCTForegroundColorAttributeName, kCTUnderlineStyleAttributeName };
+        CFTypeRef values[] = { font, col, underlined };
+        wxCFRef<CFDictionaryRef> attributes( CFDictionaryCreate(kCFAllocatorDefault, (const void**) &keys, (const void**) &values, 
+                                                        WXSIZEOF( keys ), &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks) );
+        wxCFRef<CFAttributedStringRef> attrtext( CFAttributedStringCreate(kCFAllocatorDefault, text, attributes) );
+        wxCFRef<CTLineRef> line( CTLineCreateWithAttributedString(attrtext) );
+        
+        y += CTFontGetAscent(font);
+        
+        CGContextSaveGState(m_cgContext);
+        CGContextTranslateCTM(m_cgContext, x, y);
+        CGContextScaleCTM(m_cgContext, 1, -1);
+        CGContextSetTextPosition(m_cgContext, 0, 0);
+        CTLineDraw( line, m_cgContext );
+        CGContextRestoreGState(m_cgContext);
+        return;
+    }
+#endif
+#if wxMAC_USE_ATSU_TEXT
+    {
+        DrawText(str, x, y, 0.0);
+        return;
+    }
+#endif
+#if wxMAC_USE_CG_TEXT
+    // TODO core graphics text implementation here
+#endif

 }
 
 void wxMacCoreGraphicsContext::DrawText( const wxString &str, wxDouble x, wxDouble y, wxDouble angle )
 }
 
 void wxMacCoreGraphicsContext::DrawText( const wxString &str, wxDouble x, wxDouble y, wxDouble angle )


@@ -1720,111 +1785,127 @@ void wxMacCoreGraphicsContext::DrawText( const wxString &str, wxDouble x, wxDoub
         return;
 
     EnsureIsValid();
         return;
 
     EnsureIsValid();

-
-    OSStatus status = noErr;
-    ATSUTextLayout atsuLayout;
-    UniCharCount chars = str.length();
-    UniChar* ubuf = NULL;
-
+#if wxMAC_USE_CORE_TEXT
+    if ( UMAGetSystemVersion() >= 0x1050 )
+    {
+        // default implementation takes care of rotation and calls non rotated DrawText afterwards
+        wxGraphicsContext::DrawText( str, x, y, angle );
+        return;
+    }
+#endif
+#if wxMAC_USE_ATSU_TEXT
+    {
+        OSStatus status = noErr;
+        ATSUTextLayout atsuLayout;
+        UniCharCount chars = str.length();
+        UniChar* ubuf = NULL;
+        

 #if SIZEOF_WCHAR_T == 4
 #if SIZEOF_WCHAR_T == 4

-    wxMBConvUTF16 converter;
+        wxMBConvUTF16 converter;

 #if wxUSE_UNICODE
 #if wxUSE_UNICODE

-    size_t unicharlen = converter.WC2MB( NULL , str.wc_str() , 0 );
-    ubuf = (UniChar*) malloc( unicharlen + 2 );
-    converter.WC2MB( (char*) ubuf , str.wc_str(), unicharlen + 2 );
+        size_t unicharlen = converter.WC2MB( NULL , str.wc_str() , 0 );
+        ubuf = (UniChar*) malloc( unicharlen + 2 );
+        converter.WC2MB( (char*) ubuf , str.wc_str(), unicharlen + 2 );

 #else
 #else

-    const wxWCharBuffer wchar = str.wc_str( wxConvLocal );
-    size_t unicharlen = converter.WC2MB( NULL , wchar.data() , 0 );
-    ubuf = (UniChar*) malloc( unicharlen + 2 );
-    converter.WC2MB( (char*) ubuf , wchar.data() , unicharlen + 2 );
+        const wxWCharBuffer wchar = str.wc_str( wxConvLocal );
+        size_t unicharlen = converter.WC2MB( NULL , wchar.data() , 0 );
+        ubuf = (UniChar*) malloc( unicharlen + 2 );
+        converter.WC2MB( (char*) ubuf , wchar.data() , unicharlen + 2 );

 #endif
 #endif

-    chars = unicharlen / 2;
+        chars = unicharlen / 2;

 #else
 #if wxUSE_UNICODE
 #else
 #if wxUSE_UNICODE

-    ubuf = (UniChar*) str.wc_str();
+        ubuf = (UniChar*) str.wc_str();

 #else
 #else

-    wxWCharBuffer wchar = str.wc_str( wxConvLocal );
-    chars = wxWcslen( wchar.data() );
-    ubuf = (UniChar*) wchar.data();
+        wxWCharBuffer wchar = str.wc_str( wxConvLocal );
+        chars = wxWcslen( wchar.data() );
+        ubuf = (UniChar*) wchar.data();

 #endif
 #endif
 #endif
 #endif

-
-    ATSUStyle style = (((wxMacCoreGraphicsFontData*)m_font.GetRefData())->GetATSUStyle());
-    status = ::ATSUCreateTextLayoutWithTextPtr( (UniCharArrayPtr) ubuf , 0 , chars , chars , 1 ,
-        &chars , &style , &atsuLayout );
-
-    wxASSERT_MSG( status == noErr , wxT("couldn't create the layout of the rotated text") );
-
-    status = ::ATSUSetTransientFontMatching( atsuLayout , true );
-    wxASSERT_MSG( status == noErr , wxT("couldn't setup transient font matching") );
-
-    int iAngle = int( angle * RAD2DEG );
-    if ( abs(iAngle) > 0 )
-    {
-        Fixed atsuAngle = IntToFixed( iAngle );
-        ATSUAttributeTag atsuTags[] =
-        {
-            kATSULineRotationTag ,
-        };
-        ByteCount atsuSizes[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
-        {
-            sizeof( Fixed ) ,
-        };
-        ATSUAttributeValuePtr    atsuValues[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
-        {
-            &atsuAngle ,
-        };
-        status = ::ATSUSetLayoutControls(atsuLayout , sizeof(atsuTags) / sizeof(ATSUAttributeTag),
-            atsuTags, atsuSizes, atsuValues );
-    }
-
-    {
-        ATSUAttributeTag atsuTags[] =
-        {
-            kATSUCGContextTag ,
-        };
-        ByteCount atsuSizes[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
+        
+        ATSUStyle style = (((wxMacCoreGraphicsFontData*)m_font.GetRefData())->GetATSUStyle());
+        status = ::ATSUCreateTextLayoutWithTextPtr( (UniCharArrayPtr) ubuf , 0 , chars , chars , 1 ,
+                                                   &chars , &style , &atsuLayout );
+        
+        wxASSERT_MSG( status == noErr , wxT("couldn't create the layout of the rotated text") );
+        
+        status = ::ATSUSetTransientFontMatching( atsuLayout , true );
+        wxASSERT_MSG( status == noErr , wxT("couldn't setup transient font matching") );
+        
+        int iAngle = int( angle * RAD2DEG );
+        if ( abs(iAngle) > 0 )

         {
         {

-            sizeof( CGContextRef ) ,
-        };
-        ATSUAttributeValuePtr    atsuValues[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
+            Fixed atsuAngle = IntToFixed( iAngle );
+            ATSUAttributeTag atsuTags[] =
+            {
+                kATSULineRotationTag ,
+            };
+            ByteCount atsuSizes[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
+            {
+                sizeof( Fixed ) ,
+            };
+            ATSUAttributeValuePtr    atsuValues[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
+            {
+                &atsuAngle ,
+            };
+            status = ::ATSUSetLayoutControls(atsuLayout , sizeof(atsuTags) / sizeof(ATSUAttributeTag),
+                                             atsuTags, atsuSizes, atsuValues );
+        }
+        

         {
         {

-            &m_cgContext ,
-        };
-        status = ::ATSUSetLayoutControls(atsuLayout , sizeof(atsuTags) / sizeof(ATSUAttributeTag),
-            atsuTags, atsuSizes, atsuValues );
-    }
-
-    ATSUTextMeasurement textBefore, textAfter;
-    ATSUTextMeasurement ascent, descent;
-
-    status = ::ATSUGetUnjustifiedBounds( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
-        &textBefore , &textAfter, &ascent , &descent );
-
-    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));
-
-    status = ::ATSUMeasureTextImage( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
-        IntToFixed(x) , IntToFixed(y) , &rect );
-    wxASSERT_MSG( status == noErr , wxT("couldn't measure the rotated text") );
-
-    CGContextSaveGState(m_cgContext);
-    CGContextTranslateCTM(m_cgContext, x, y);
-    CGContextScaleCTM(m_cgContext, 1, -1);
-    status = ::ATSUDrawText( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
-        IntToFixed(0) , IntToFixed(0) );
-
-    wxASSERT_MSG( status == noErr , wxT("couldn't draw the rotated text") );
-
-    CGContextRestoreGState(m_cgContext);
-
-    ::ATSUDisposeTextLayout(atsuLayout);
-
+            ATSUAttributeTag atsuTags[] =
+            {
+                kATSUCGContextTag ,
+            };
+            ByteCount atsuSizes[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
+            {
+                sizeof( CGContextRef ) ,
+            };
+            ATSUAttributeValuePtr    atsuValues[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
+            {
+                &m_cgContext ,
+            };
+            status = ::ATSUSetLayoutControls(atsuLayout , sizeof(atsuTags) / sizeof(ATSUAttributeTag),
+                                             atsuTags, atsuSizes, atsuValues );
+        }
+        
+        ATSUTextMeasurement textBefore, textAfter;
+        ATSUTextMeasurement ascent, descent;
+        
+        status = ::ATSUGetUnjustifiedBounds( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
+                                            &textBefore , &textAfter, &ascent , &descent );
+        
+        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));
+        
+        status = ::ATSUMeasureTextImage( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
+                                        IntToFixed(x) , IntToFixed(y) , &rect );
+        wxASSERT_MSG( status == noErr , wxT("couldn't measure the rotated text") );
+        
+        CGContextSaveGState(m_cgContext);
+        CGContextTranslateCTM(m_cgContext, x, y);
+        CGContextScaleCTM(m_cgContext, 1, -1);
+        status = ::ATSUDrawText( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
+                                IntToFixed(0) , IntToFixed(0) );
+        
+        wxASSERT_MSG( status == noErr , wxT("couldn't draw the rotated text") );
+        
+        CGContextRestoreGState(m_cgContext);
+        
+        ::ATSUDisposeTextLayout(atsuLayout);
+        

 #if SIZEOF_WCHAR_T == 4
 #if SIZEOF_WCHAR_T == 4

-    free( ubuf );
+        free( ubuf );
+#endif
+        return;
+    }
+#endif
+#if wxMAC_USE_CG_TEXT
+    // default implementation takes care of rotation and calls non rotated DrawText afterwards
+    wxGraphicsContext::DrawText( str, x, y, angle );

 #endif
 }
 
 #endif
 }
 


@@ -1845,59 +1926,96 @@ void wxMacCoreGraphicsContext::GetTextExtent( const wxString &str, wxDouble *wid
     if (str.empty())
         return;
 
     if (str.empty())
         return;
 

-    OSStatus status = noErr;
-
-    ATSUTextLayout atsuLayout;
-    UniCharCount chars = str.length();
-    UniChar* ubuf = NULL;
-
+#if wxMAC_USE_CORE_TEXT
+    if ( UMAGetSystemVersion() >= 0x1050 )
+    {
+        wxMacCoreGraphicsFontData* fref = (wxMacCoreGraphicsFontData*)m_font.GetRefData();
+        CTFontRef font = fref->GetCTFont();
+
+        wxMacCFStringHolder text(str, wxLocale::GetSystemEncoding() );
+        CFStringRef keys[] = { kCTFontAttributeName  };
+        CFTypeRef values[] = { font };
+        wxCFRef<CFDictionaryRef> attributes( CFDictionaryCreate(kCFAllocatorDefault, (const void**) &keys, (const void**) &values, 
+                                                                WXSIZEOF( keys ), &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks) );
+        wxCFRef<CFAttributedStringRef> attrtext( CFAttributedStringCreate(kCFAllocatorDefault, text, attributes) );
+        wxCFRef<CTLineRef> line( CTLineCreateWithAttributedString(attrtext) );
+            
+        CGFloat w, a, d, l;
+        
+        w = CTLineGetTypographicBounds(line, &a, &d, &l) ;
+        
+        if ( height )
+            *height = a+d+l;
+        if ( descent )
+            *descent = d;
+        if ( externalLeading )
+            *externalLeading = l;
+        if ( width )
+            *width = w;
+        return;
+    }
+#endif
+#if wxMAC_USE_ATSU_TEXT
+    {
+        OSStatus status = noErr;
+        
+        ATSUTextLayout atsuLayout;
+        UniCharCount chars = str.length();
+        UniChar* ubuf = NULL;
+        

 #if SIZEOF_WCHAR_T == 4
 #if SIZEOF_WCHAR_T == 4

-    wxMBConvUTF16 converter;
+        wxMBConvUTF16 converter;

 #if wxUSE_UNICODE
 #if wxUSE_UNICODE

-    size_t unicharlen = converter.WC2MB( NULL , str.wc_str() , 0 );
-    ubuf = (UniChar*) malloc( unicharlen + 2 );
-    converter.WC2MB( (char*) ubuf , str.wc_str(), unicharlen + 2 );
+        size_t unicharlen = converter.WC2MB( NULL , str.wc_str() , 0 );
+        ubuf = (UniChar*) malloc( unicharlen + 2 );
+        converter.WC2MB( (char*) ubuf , str.wc_str(), unicharlen + 2 );

 #else
 #else

-    const wxWCharBuffer wchar = str.wc_str( wxConvLocal );
-    size_t unicharlen = converter.WC2MB( NULL , wchar.data() , 0 );
-    ubuf = (UniChar*) malloc( unicharlen + 2 );
-    converter.WC2MB( (char*) ubuf , wchar.data() , unicharlen + 2 );
+        const wxWCharBuffer wchar = str.wc_str( wxConvLocal );
+        size_t unicharlen = converter.WC2MB( NULL , wchar.data() , 0 );
+        ubuf = (UniChar*) malloc( unicharlen + 2 );
+        converter.WC2MB( (char*) ubuf , wchar.data() , unicharlen + 2 );

 #endif
 #endif

-    chars = unicharlen / 2;
+        chars = unicharlen / 2;

 #else
 #if wxUSE_UNICODE
 #else
 #if wxUSE_UNICODE

-    ubuf = (UniChar*) str.wc_str();
+        ubuf = (UniChar*) str.wc_str();

 #else
 #else

-    wxWCharBuffer wchar = str.wc_str( wxConvLocal );
-    chars = wxWcslen( wchar.data() );
-    ubuf = (UniChar*) wchar.data();
+        wxWCharBuffer wchar = str.wc_str( wxConvLocal );
+        chars = wxWcslen( wchar.data() );
+        ubuf = (UniChar*) wchar.data();

 #endif
 #endif
 #endif
 #endif

-
-    ATSUStyle style = (((wxMacCoreGraphicsFontData*)m_font.GetRefData())->GetATSUStyle());
-    status = ::ATSUCreateTextLayoutWithTextPtr( (UniCharArrayPtr) ubuf , 0 , chars , chars , 1 ,
-        &chars , &style , &atsuLayout );
-
-    wxASSERT_MSG( status == noErr , wxT("couldn't create the layout of the text") );
-
-    ATSUTextMeasurement textBefore, textAfter;
-    ATSUTextMeasurement textAscent, textDescent;
-
-    status = ::ATSUGetUnjustifiedBounds( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
-        &textBefore , &textAfter, &textAscent , &textDescent );
-
-    if ( height )
-        *height = FixedToInt(textAscent + textDescent);
-    if ( descent )
-        *descent = FixedToInt(textDescent);
-    if ( externalLeading )
-        *externalLeading = 0;
-    if ( width )
-        *width = FixedToInt(textAfter - textBefore);
-
-    ::ATSUDisposeTextLayout(atsuLayout);
+        
+        ATSUStyle style = (((wxMacCoreGraphicsFontData*)m_font.GetRefData())->GetATSUStyle());
+        status = ::ATSUCreateTextLayoutWithTextPtr( (UniCharArrayPtr) ubuf , 0 , chars , chars , 1 ,
+                                                   &chars , &style , &atsuLayout );
+        
+        wxASSERT_MSG( status == noErr , wxT("couldn't create the layout of the text") );
+        
+        ATSUTextMeasurement textBefore, textAfter;
+        ATSUTextMeasurement textAscent, textDescent;
+        
+        status = ::ATSUGetUnjustifiedBounds( atsuLayout, kATSUFromTextBeginning, kATSUToTextEnd,
+                                            &textBefore , &textAfter, &textAscent , &textDescent );
+        
+        if ( height )
+            *height = FixedToInt(textAscent + textDescent);
+        if ( descent )
+            *descent = FixedToInt(textDescent);
+        if ( externalLeading )
+            *externalLeading = 0;
+        if ( width )
+            *width = FixedToInt(textAfter - textBefore);
+        
+        ::ATSUDisposeTextLayout(atsuLayout);

 #if SIZEOF_WCHAR_T == 4
 #if SIZEOF_WCHAR_T == 4

-    free( ubuf ) ;
+        free( ubuf ) ;
+#endif
+        return;
+    }
+#endif
+#if wxMAC_USE_CG_TEXT
+    // TODO core graphics text implementation here

 #endif
 }
 
 #endif
 }
 


@@ -1909,56 +2027,85 @@ void wxMacCoreGraphicsContext::GetPartialTextExtents(const wxString& text, wxArr
     if (text.empty())
         return;
 
     if (text.empty())
         return;
 

-    ATSUTextLayout atsuLayout;
-    UniCharCount chars = text.length();
-    UniChar* ubuf = NULL;
-
+#if wxMAC_USE_CORE_TEXT
+    {
+        wxMacCoreGraphicsFontData* fref = (wxMacCoreGraphicsFontData*)m_font.GetRefData();
+        CTFontRef font = fref->GetCTFont();
+        
+        wxMacCFStringHolder t(text, wxLocale::GetSystemEncoding() );
+        CFStringRef keys[] = { kCTFontAttributeName  };
+        CFTypeRef values[] = { font };
+        wxCFRef<CFDictionaryRef> attributes( CFDictionaryCreate(kCFAllocatorDefault, (const void**) &keys, (const void**) &values, 
+                                                                WXSIZEOF( keys ), &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks) );
+        wxCFRef<CFAttributedStringRef> attrtext( CFAttributedStringCreate(kCFAllocatorDefault, t, attributes) );
+        wxCFRef<CTLineRef> line( CTLineCreateWithAttributedString(attrtext) );
+        
+        int chars = text.length();
+        for ( int pos = 0; pos < (int)chars; pos ++ )
+        {
+            widths[pos] = CTLineGetOffsetForStringIndex( line, pos+1 , NULL )+0.5;
+        }
+        
+        return;
+    }
+#endif
+#if wxMAC_USE_ATSU_TEXT
+    {
+        ATSUTextLayout atsuLayout;
+        UniCharCount chars = text.length();
+        UniChar* ubuf = NULL;
+        

 #if SIZEOF_WCHAR_T == 4
 #if SIZEOF_WCHAR_T == 4

-    wxMBConvUTF16 converter;
+        wxMBConvUTF16 converter;

 #if wxUSE_UNICODE
 #if wxUSE_UNICODE

-    size_t unicharlen = converter.WC2MB( NULL , text.wc_str() , 0 );
-    ubuf = (UniChar*) malloc( unicharlen + 2 );
-    converter.WC2MB( (char*) ubuf , text.wc_str(), unicharlen + 2 );
+        size_t unicharlen = converter.WC2MB( NULL , text.wc_str() , 0 );
+        ubuf = (UniChar*) malloc( unicharlen + 2 );
+        converter.WC2MB( (char*) ubuf , text.wc_str(), unicharlen + 2 );

 #else
 #else

-    const wxWCharBuffer wchar = text.wc_str( wxConvLocal );
-    size_t unicharlen = converter.WC2MB( NULL , wchar.data() , 0 );
-    ubuf = (UniChar*) malloc( unicharlen + 2 );
-    converter.WC2MB( (char*) ubuf , wchar.data() , unicharlen + 2 );
+        const wxWCharBuffer wchar = text.wc_str( wxConvLocal );
+        size_t unicharlen = converter.WC2MB( NULL , wchar.data() , 0 );
+        ubuf = (UniChar*) malloc( unicharlen + 2 );
+        converter.WC2MB( (char*) ubuf , wchar.data() , unicharlen + 2 );

 #endif
 #endif

-    chars = unicharlen / 2;
+        chars = unicharlen / 2;

 #else
 #if wxUSE_UNICODE
 #else
 #if wxUSE_UNICODE

-    ubuf = (UniChar*) text.wc_str();
+        ubuf = (UniChar*) text.wc_str();

 #else
 #else

-    wxWCharBuffer wchar = text.wc_str( wxConvLocal );
-    chars = wxWcslen( wchar.data() );
-    ubuf = (UniChar*) wchar.data();
+        wxWCharBuffer wchar = text.wc_str( wxConvLocal );
+        chars = wxWcslen( wchar.data() );
+        ubuf = (UniChar*) wchar.data();

 #endif
 #endif
 #endif
 #endif

-
-    ATSUStyle style = (((wxMacCoreGraphicsFontData*)m_font.GetRefData())->GetATSUStyle());
-    ::ATSUCreateTextLayoutWithTextPtr( (UniCharArrayPtr) ubuf , 0 , chars , chars , 1 ,
-        &chars , &style , &atsuLayout );
-
-    for ( int pos = 0; pos < (int)chars; pos ++ )
-    {
-        unsigned long actualNumberOfBounds = 0;
-        ATSTrapezoid glyphBounds;
-
-        // We get a single bound, since the text should only require one. If it requires more, there is an issue
-        OSStatus result;
-        result = ATSUGetGlyphBounds( atsuLayout, 0, 0, kATSUFromTextBeginning, pos + 1,
-            kATSUseDeviceOrigins, 1, &glyphBounds, &actualNumberOfBounds );
-        if (result != noErr || actualNumberOfBounds != 1 )
-            return;
-
-        widths[pos] = FixedToInt( glyphBounds.upperRight.x - glyphBounds.upperLeft.x );
-        //unsigned char uch = s[i];
-    }
-
-    ::ATSUDisposeTextLayout(atsuLayout);
+        
+        ATSUStyle style = (((wxMacCoreGraphicsFontData*)m_font.GetRefData())->GetATSUStyle());
+        ::ATSUCreateTextLayoutWithTextPtr( (UniCharArrayPtr) ubuf , 0 , chars , chars , 1 ,
+                                          &chars , &style , &atsuLayout );
+        
+        for ( int pos = 0; pos < (int)chars; pos ++ )
+        {
+            unsigned long actualNumberOfBounds = 0;
+            ATSTrapezoid glyphBounds;
+            
+            // We get a single bound, since the text should only require one. If it requires more, there is an issue
+            OSStatus result;
+            result = ATSUGetGlyphBounds( atsuLayout, 0, 0, kATSUFromTextBeginning, pos + 1,
+                                        kATSUseDeviceOrigins, 1, &glyphBounds, &actualNumberOfBounds );
+            if (result != noErr || actualNumberOfBounds != 1 )
+                return;
+            
+            widths[pos] = FixedToInt( glyphBounds.upperRight.x - glyphBounds.upperLeft.x );
+            //unsigned char uch = s[i];
+        }
+        
+        ::ATSUDisposeTextLayout(atsuLayout);

 #if SIZEOF_WCHAR_T == 4
 #if SIZEOF_WCHAR_T == 4

-    free( ubuf ) ;
+        free( ubuf ) ;
+#endif
+    }
+#endif
+#if wxMAC_USE_CG_TEXT
+    // TODO core graphics text implementation here

 #endif
 }
 
 #endif
 }
 


@@ -2019,6 +2166,7 @@ public :
     // Context
 
     virtual wxGraphicsContext * CreateContext( const wxWindowDC& dc);
     // Context
 
     virtual wxGraphicsContext * CreateContext( const wxWindowDC& dc);

+    virtual wxGraphicsContext * CreateContext( const wxMemoryDC& dc);

 
     virtual wxGraphicsContext * CreateContextFromNativeContext( void * context );
 
 
     virtual wxGraphicsContext * CreateContextFromNativeContext( void * context );
 


@@ -2071,18 +2219,26 @@ wxGraphicsRenderer* wxGraphicsRenderer::GetDefaultRenderer()
     return &gs_MacCoreGraphicsRenderer;
 }
 
     return &gs_MacCoreGraphicsRenderer;
 }
 

-wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContext( const wxWindowDC& dc)
+wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContext( const wxWindowDC& dc )

 {
 {

-    wxMemoryDC* mdc = wxDynamicCast(&dc, wxMemoryDC);
-    if ( mdc )
-    {
-        return new wxMacCoreGraphicsContext(this, 
-            (CGContextRef)mdc->GetGraphicsContext()->GetNativeContext());
-    }
-    else
-    {
-        return new wxMacCoreGraphicsContext(this,(CGContextRef)dc.GetWindow()->MacGetCGContextRef() );
-    }
+    const wxDCImpl* impl = dc.GetImpl();
+    wxWindowDCImpl *win_impl = wxDynamicCast( impl, wxWindowDCImpl );
+    if (win_impl)
+        return new wxMacCoreGraphicsContext( this,
+           (CGContextRef)(win_impl->GetWindow()->MacGetCGContextRef()) );
+           
+    return NULL;
+}
+
+wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContext( const wxMemoryDC& dc )
+{
+    const wxDCImpl* impl = dc.GetImpl();
+    wxMemoryDCImpl *mem_impl = wxDynamicCast( impl, wxMemoryDCImpl );
+    if (mem_impl)
+        return new wxMacCoreGraphicsContext( this, 
+            (CGContextRef)(mem_impl->GetGraphicsContext()->GetNativeContext()) );
+            
+    return NULL;

 }
 
 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContextFromNativeContext( void * context )
 }
 
 wxGraphicsContext * wxMacCoreGraphicsRenderer::CreateContextFromNativeContext( void * context )


@@ -2188,3 +2344,67 @@ wxGraphicsFont wxMacCoreGraphicsRenderer::CreateFont( const wxFont &font , const
         return wxNullGraphicsFont;
 }
 
         return wxNullGraphicsFont;
 }
 

+//
+// CoreGraphics Helper Methods
+//
+
+// Data Providers and Consumers
+
+size_t UMAPutBytesCFRefCallback( void *info, const void *bytes, size_t count )
+{
+    CFMutableDataRef data = (CFMutableDataRef) info;
+    if ( data )
+    {
+        CFDataAppendBytes( data, (const UInt8*) bytes, count );
+    }
+    return count;
+}
+
+void wxMacReleaseCFDataProviderCallback(void *info,
+                                      const void *WXUNUSED(data),
+                                      size_t WXUNUSED(count))
+{
+    if ( info )
+        CFRelease( (CFDataRef) info );
+}
+
+void wxMacReleaseCFDataConsumerCallback( void *info )
+{
+    if ( info )
+        CFRelease( (CFDataRef) info );
+}
+
+CGDataProviderRef wxMacCGDataProviderCreateWithCFData( CFDataRef data )
+{
+    if ( data == NULL )
+        return NULL;
+
+    return CGDataProviderCreateWithCFData( data );
+}
+
+CGDataConsumerRef wxMacCGDataConsumerCreateWithCFData( CFMutableDataRef data )
+{
+    if ( data == NULL )
+        return NULL;
+
+    return CGDataConsumerCreateWithCFData( data );
+}
+
+void wxMacReleaseMemoryBufferProviderCallback(void *info, const void *data, size_t WXUNUSED(size))
+{
+    wxMemoryBuffer* membuf = (wxMemoryBuffer*) info ;
+
+    wxASSERT( data == membuf->GetData() ) ;
+
+    delete membuf ;
+}
+
+CGDataProviderRef wxMacCGDataProviderCreateWithMemoryBuffer( const wxMemoryBuffer& buf )
+{
+    wxMemoryBuffer* b = new wxMemoryBuffer( buf );
+    if ( b->GetDataLen() == 0 )
+        return NULL;
+        
+    return CGDataProviderCreateWithData( b , (const void *) b->GetData() , b->GetDataLen() ,
+                                                 wxMacReleaseMemoryBufferProviderCallback );
+}
\ No newline at end of file