+void wxMacCoreGraphicsContext::EndPage()
+{
+ CGContextEndPage(m_cgContext);
+}
+
+void wxMacCoreGraphicsContext::Flush()
+{
+ CGContextFlush(m_cgContext);
+}
+
+void wxMacCoreGraphicsContext::EnsureIsValid()
+{
+ if ( !m_cgContext )
+ {
+ OSStatus status =
+#if ! ( defined( __LP64__ ) || defined(__WXCOCOA__) )
+ QDBeginCGContext( GetWindowPort( m_windowRef ) , &m_cgContext );
+#else
+ paramErr;
+#endif
+ if ( status != noErr )
+ {
+ wxFAIL_MSG("Cannot nest wxDCs on the same window");
+ }
+
+ CGContextConcatCTM( m_cgContext, m_windowTransform );
+ CGContextSaveGState( m_cgContext );
+ m_releaseContext = true;
+ if ( !HIShapeIsEmpty(m_clipRgn) )
+ {
+ // the clip region is in device coordinates, so we convert this again to user coordinates
+ wxCFRef<HIMutableShapeRef> hishape( HIShapeCreateMutableCopy( m_clipRgn ) );
+ CGPoint transformedOrigin = CGPointApplyAffineTransform( CGPointZero,m_windowTransform);
+ HIShapeOffset( hishape, -transformedOrigin.x, -transformedOrigin.y );
+ HIShapeReplacePathInCGContext( hishape, m_cgContext );
+ CGContextClip( m_cgContext );
+ }
+ CGContextSaveGState( m_cgContext );
+ }
+}
+
+// TODO test whether the private CGContextSetCompositeOperation works under 10.3 (using NSCompositingModes)
+
+bool wxMacCoreGraphicsContext::SetLogicalFunction( int function )
+{
+ if (m_logicalFunction == function)
+ return true;
+
+ EnsureIsValid();
+
+ bool retval = false;
+ bool shouldAntiAlias = true;
+ CGBlendMode mode = kCGBlendModeNormal;
+
+#if defined(__WXMAC__) && ( MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5 )
+ if ( UMAGetSystemVersion() >= 0x1050 )
+ {
+ retval = true;
+ switch ( function )
+ {
+ // TODO find best corresponding porter duff modes
+ case wxCOPY :
+ mode = kCGBlendModeCopy;
+ break;
+ case wxCLEAR :
+ mode = kCGBlendModeClear;
+ break;
+ case wxXOR :
+ mode = kCGBlendModeXOR;
+ shouldAntiAlias = false;
+ break;
+ default :
+ retval = false;
+ break;
+ }
+ }
+ else
+#endif
+ {
+ if ( function == wxCOPY )
+ {
+ retval = true;
+ }
+ else if ( function == wxINVERT || function == wxXOR )
+ {
+ // change color to white
+ mode = kCGBlendModeExclusion;
+ shouldAntiAlias = false;
+ retval = true;
+ }
+ }
+
+ if (retval)
+ {
+ m_logicalFunction = function;
+ CGContextSetBlendMode( m_cgContext, mode );
+ CGContextSetShouldAntialias(m_cgContext, shouldAntiAlias);
+ }
+ return retval ;
+}
+
+void wxMacCoreGraphicsContext::Clip( const wxRegion ®ion )
+{
+#ifdef __WXMAC__
+ if( m_cgContext )
+ {
+ HIShapeReplacePathInCGContext( region.GetWXHRGN() , m_cgContext );
+ CGContextClip( m_cgContext );
+ }
+ 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
+ HIMutableShapeRef mutableShape = HIShapeCreateMutableCopy( region.GetWXHRGN() );
+
+ CGPoint transformedOrigin = CGPointApplyAffineTransform( CGPointZero, m_windowTransform );
+ HIShapeOffset( mutableShape, transformedOrigin.x, transformedOrigin.y );
+ m_clipRgn.reset(mutableShape);
+ }
+#endif
+}
+
+// clips drawings to the rect
projects / wxWidgets.git / blobdiff