X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/1c69a6ff5a4ce2e35997b2e683462f565a451f23..ad259ba5b263acd502b2bad4c73e58e00d353702:/include/wx/graphics.h?ds=sidebyside

diff --git a/include/wx/graphics.h b/include/wx/graphics.h
old mode 100755
new mode 100644
index be2397da23..e710213c94
--- a/include/wx/graphics.h
+++ b/include/wx/graphics.h
@@ -17,15 +17,16 @@
 #include "wx/geometry.h"
 #include "wx/dynarray.h"
 
-class WXDLLIMPEXP_CORE wxWindowDC;
-class WXDLLIMPEXP_CORE wxGraphicsContext;
-class WXDLLIMPEXP_CORE wxGraphicsPath;
-class WXDLLIMPEXP_CORE wxGraphicsMatrix;
-class WXDLLIMPEXP_CORE wxGraphicsFigure;
-class WXDLLIMPEXP_CORE wxGraphicsRenderer;
-class WXDLLIMPEXP_CORE wxGraphicsPen;
-class WXDLLIMPEXP_CORE wxGraphicsBrush;
-class WXDLLIMPEXP_CORE wxGraphicsFont;
+class WXDLLIMPEXP_FWD_CORE wxWindowDC;
+class WXDLLIMPEXP_FWD_CORE wxMemoryDC;
+class WXDLLIMPEXP_FWD_CORE wxGraphicsContext;
+class WXDLLIMPEXP_FWD_CORE wxGraphicsPath;
+class WXDLLIMPEXP_FWD_CORE wxGraphicsMatrix;
+class WXDLLIMPEXP_FWD_CORE wxGraphicsFigure;
+class WXDLLIMPEXP_FWD_CORE wxGraphicsRenderer;
+class WXDLLIMPEXP_FWD_CORE wxGraphicsPen;
+class WXDLLIMPEXP_FWD_CORE wxGraphicsBrush;
+class WXDLLIMPEXP_FWD_CORE wxGraphicsFont;
 
 /*
  * notes about the graphics context apis
@@ -37,63 +38,204 @@ class WXDLLIMPEXP_CORE wxGraphicsFont;
 // Base class of all objects used for drawing in the new graphics API, the always point back to their
 // originating rendering engine, there is no dynamic unloading of a renderer currently allowed, 
 // these references are not counted
+
+//
+// The data used by objects like graphics pens etc is ref counted, in order to avoid unnecessary expensive
+// duplication. Any operation on a shared instance that results in a modified state, uncouples this
+// instance from the other instances that were shared - using copy on write semantics
+//
  
+class WXDLLIMPEXP_CORE wxGraphicsObjectRefData : public wxObjectRefData
+{
+public :
+    wxGraphicsObjectRefData( wxGraphicsRenderer* renderer );
+    wxGraphicsObjectRefData( const wxGraphicsObjectRefData* data );
+    wxGraphicsRenderer* GetRenderer() const ;
+    virtual wxGraphicsObjectRefData* Clone() const ;
+
+protected :
+    wxGraphicsRenderer* m_renderer;
+} ;
+
 class WXDLLIMPEXP_CORE wxGraphicsObject : public wxObject
 {
 public :
-	wxGraphicsObject( wxGraphicsRenderer* renderer = NULL ) : m_renderer(renderer) {}
-	
-	wxGraphicsObject( const wxGraphicsObject& obj ) : m_renderer(obj.GetRenderer()) {}
-	
-	virtual ~wxGraphicsObject() {}
-	
-	wxGraphicsRenderer* GetRenderer() const { return m_renderer ; }
+    wxGraphicsObject() ;
+    wxGraphicsObject( wxGraphicsRenderer* renderer ) ;
+    virtual ~wxGraphicsObject() ;
+    
+    bool IsNull() const ;
+
+    // returns the renderer that was used to create this instance, or NULL if it has not been initialized yet
+    wxGraphicsRenderer* GetRenderer() const ;
+    wxGraphicsObjectRefData* GetGraphicsData() const ;
 protected :
-	wxGraphicsRenderer* m_renderer;
-	DECLARE_DYNAMIC_CLASS(wxGraphicsObject);
+    virtual wxObjectRefData* CreateRefData() const;
+    virtual wxObjectRefData* CloneRefData(const wxObjectRefData* data) const;
+
+    DECLARE_DYNAMIC_CLASS(wxGraphicsObject)
 } ;
 
 class WXDLLIMPEXP_CORE wxGraphicsPen : public wxGraphicsObject
 {
 public :
-    wxGraphicsPen(wxGraphicsRenderer* renderer) : wxGraphicsObject(renderer) {}
+    wxGraphicsPen() {}
     virtual ~wxGraphicsPen() {}
-    virtual void Apply( wxGraphicsContext* context) = 0;
-    virtual wxDouble GetWidth() = 0;
 private :
-    DECLARE_NO_COPY_CLASS(wxGraphicsPen)
-    DECLARE_ABSTRACT_CLASS(wxGraphicsPen)
+    DECLARE_DYNAMIC_CLASS(wxGraphicsPen)
 } ;
 
+extern WXDLLEXPORT_DATA(wxGraphicsPen) wxNullGraphicsPen;
+
 class WXDLLIMPEXP_CORE wxGraphicsBrush : public wxGraphicsObject
 {
 public :
-    wxGraphicsBrush(wxGraphicsRenderer* renderer) : wxGraphicsObject(renderer) {}
+    wxGraphicsBrush() {}
     virtual ~wxGraphicsBrush() {}
-    virtual void Apply( wxGraphicsContext* context) = 0;
 private :
-    DECLARE_NO_COPY_CLASS(wxGraphicsBrush)
-    DECLARE_ABSTRACT_CLASS(wxGraphicsBrush)
+    DECLARE_DYNAMIC_CLASS(wxGraphicsBrush)
 } ;
 
+extern WXDLLEXPORT_DATA(wxGraphicsBrush) wxNullGraphicsBrush;
+
 class WXDLLIMPEXP_CORE wxGraphicsFont : public wxGraphicsObject
 {
 public :
-    wxGraphicsFont(wxGraphicsRenderer* renderer) : wxGraphicsObject(renderer) {}
+    wxGraphicsFont() {}
     virtual ~wxGraphicsFont() {}
-    virtual void Apply( wxGraphicsContext* context) = 0;
 private :
-    DECLARE_NO_COPY_CLASS(wxGraphicsFont)
-    DECLARE_ABSTRACT_CLASS(wxGraphicsFont)
+    DECLARE_DYNAMIC_CLASS(wxGraphicsFont)
 } ;
 
-class WXDLLIMPEXP_CORE wxGraphicsPath : public wxGraphicsObject
+extern WXDLLEXPORT_DATA(wxGraphicsFont) wxNullGraphicsFont;
+
+
+class WXDLLIMPEXP_CORE wxGraphicsMatrixData : public wxGraphicsObjectRefData
 {
 public :
-    wxGraphicsPath(wxGraphicsRenderer* renderer) : wxGraphicsObject(renderer) {}
-    virtual ~wxGraphicsPath() {}
-    
-    virtual wxGraphicsPath *Clone() const = 0;
+    wxGraphicsMatrixData( wxGraphicsRenderer* renderer) : 
+       wxGraphicsObjectRefData(renderer) {}
+
+       virtual ~wxGraphicsMatrixData() {}
+
+       // concatenates the matrix
+       virtual void Concat( const wxGraphicsMatrixData *t ) = 0;
+
+       // sets the matrix to the respective values
+       virtual void Set(wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0, 
+           wxDouble tx=0.0, wxDouble ty=0.0) = 0;
+
+       // gets the component valuess of the matrix
+       virtual void Get(wxDouble* a=NULL, wxDouble* b=NULL,  wxDouble* c=NULL,
+                        wxDouble* d=NULL, wxDouble* tx=NULL, wxDouble* ty=NULL) const = 0;
+       
+       // makes this the inverse matrix
+       virtual void Invert() = 0;
+
+       // returns true if the elements of the transformation matrix are equal ?
+       virtual bool IsEqual( const wxGraphicsMatrixData* t) const  = 0;
+
+       // return true if this is the identity matrix
+       virtual bool IsIdentity() const = 0;
+
+       //
+       // transformation
+       //
+
+       // add the translation to this matrix
+       virtual void Translate( wxDouble dx , wxDouble dy ) = 0;
+
+       // add the scale to this matrix
+       virtual void Scale( wxDouble xScale , wxDouble yScale ) = 0;
+
+       // add the rotation to this matrix (radians)
+       virtual void Rotate( wxDouble angle ) = 0;  
+
+       //
+       // apply the transforms
+       //
+
+       // applies that matrix to the point
+       virtual void TransformPoint( wxDouble *x, wxDouble *y ) const = 0;
+
+       // applies the matrix except for translations
+       virtual void TransformDistance( wxDouble *dx, wxDouble *dy ) const =0;
+
+       // returns the native representation
+       virtual void * GetNativeMatrix() const = 0;
+} ;
+
+class WXDLLIMPEXP_CORE wxGraphicsMatrix : public wxGraphicsObject
+{
+public :
+    wxGraphicsMatrix() {}
+
+    virtual ~wxGraphicsMatrix() {}
+
+    // concatenates the matrix
+    virtual void Concat( const wxGraphicsMatrix *t );
+    void Concat( const wxGraphicsMatrix &t ) { Concat( &t ); }
+
+    // sets the matrix to the respective values
+    virtual void Set(wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0, 
+        wxDouble tx=0.0, wxDouble ty=0.0);
+
+    // gets the component valuess of the matrix
+    virtual void Get(wxDouble* a=NULL, wxDouble* b=NULL,  wxDouble* c=NULL,
+                     wxDouble* d=NULL, wxDouble* tx=NULL, wxDouble* ty=NULL) const;
+       
+    // makes this the inverse matrix
+    virtual void Invert();
+
+    // returns true if the elements of the transformation matrix are equal ?
+    virtual bool IsEqual( const wxGraphicsMatrix* t) const;
+    bool IsEqual( const wxGraphicsMatrix& t) const { return IsEqual( &t ); }
+
+    // return true if this is the identity matrix
+    virtual bool IsIdentity() const;
+
+    //
+    // transformation
+    //
+
+    // add the translation to this matrix
+    virtual void Translate( wxDouble dx , wxDouble dy );
+
+    // add the scale to this matrix
+    virtual void Scale( wxDouble xScale , wxDouble yScale );
+
+    // add the rotation to this matrix (radians)
+    virtual void Rotate( wxDouble angle );  
+
+    //
+    // apply the transforms
+    //
+
+    // applies that matrix to the point
+    virtual void TransformPoint( wxDouble *x, wxDouble *y ) const;
+
+    // applies the matrix except for translations
+    virtual void TransformDistance( wxDouble *dx, wxDouble *dy ) const;
+
+    // returns the native representation
+    virtual void * GetNativeMatrix() const;
+
+    const wxGraphicsMatrixData* GetMatrixData() const 
+    { return (const wxGraphicsMatrixData*) GetRefData(); }
+    wxGraphicsMatrixData* GetMatrixData() 
+    { return (wxGraphicsMatrixData*) GetRefData(); }
+
+private :
+    DECLARE_DYNAMIC_CLASS(wxGraphicsMatrix)
+} ;
+
+extern WXDLLEXPORT_DATA(wxGraphicsMatrix) wxNullGraphicsMatrix;
+
+class WXDLLIMPEXP_CORE wxGraphicsPathData : public wxGraphicsObjectRefData
+{
+public :
+    wxGraphicsPathData(wxGraphicsRenderer* renderer) : wxGraphicsObjectRefData(renderer) {}
+    virtual ~wxGraphicsPathData() {}
 
     //
     // These are the path primitives from which everything else can be constructed
@@ -101,29 +243,24 @@ public :
 
     // begins a new subpath at (x,y)
     virtual void MoveToPoint( wxDouble x, wxDouble y ) = 0;
-    void MoveToPoint( const wxPoint2DDouble& p);
 
     // adds a straight line from the current point to (x,y) 
     virtual void AddLineToPoint( wxDouble x, wxDouble y ) = 0;
-    void AddLineToPoint( const wxPoint2DDouble& p);
 
     // adds a cubic Bezier curve from the current point, using two control points and an end point
     virtual void AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y ) = 0;
-    void AddCurveToPoint( const wxPoint2DDouble& c1, const wxPoint2DDouble& c2, const wxPoint2DDouble& e);
-	
-	// adds another path
-	virtual void AddPath( const wxGraphicsPath* path ) =0;
+
+    // adds another path
+    virtual void AddPath( const wxGraphicsPathData* path ) =0;
 
     // closes the current sub-path
     virtual void CloseSubpath() = 0;
 
     // gets the last point of the current path, (0,0) if not yet set
-    virtual void GetCurrentPoint( wxDouble& x, wxDouble&y) = 0;
-    wxPoint2DDouble GetCurrentPoint();
+    virtual void GetCurrentPoint( wxDouble* x, wxDouble* y) const = 0;
 
     // adds an arc of a circle centering at (x,y) with radius (r) from startAngle to endAngle
     virtual void AddArc( wxDouble x, wxDouble y, wxDouble r, wxDouble startAngle, wxDouble endAngle, bool clockwise ) = 0;
-	void AddArc( const wxPoint2DDouble& c, wxDouble r, wxDouble startAngle, wxDouble endAngle, bool clockwise);
 
     //
     // These are convenience functions which - if not available natively will be assembled 
@@ -139,90 +276,117 @@ public :
     // appends an ellipsis as a new closed subpath fitting the passed rectangle
     virtual void AddCircle( wxDouble x, wxDouble y, wxDouble r );
 
-    // draws a an arc to two tangents connecting (current) to (x1,y1) and (x1,y1) to (x2,y2), also a straight line from (current) to (x1,y1)
+    // appends a an arc to two tangents connecting (current) to (x1,y1) and (x1,y1) to (x2,y2), also a straight line from (current) to (x1,y1)
     virtual void AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2, wxDouble y2, wxDouble r ) ;
-	
-	// returns the native path
-	virtual void * GetNativePath() const = 0;
-	
-	// give the native path returned by GetNativePath() back (there might be some deallocations necessary)
-	virtual void UnGetNativePath(void *p) = 0;
-	
-	// transforms each point of this path by the matrix
-	virtual void Transform( wxGraphicsMatrix* matrix ) =0;
-	
-	// gets the bounding box enclosing all points (possibly including control points)
-	virtual void GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *h) =0;
-	wxRect2DDouble GetBox();
-	
-	virtual bool Contains( wxDouble x, wxDouble y, int fillStyle = wxWINDING_RULE) =0;
-	bool Contains( const wxPoint2DDouble& c, int fillStyle = wxWINDING_RULE);
-	
-    DECLARE_NO_COPY_CLASS(wxGraphicsPath)
-    DECLARE_ABSTRACT_CLASS(wxGraphicsPath)
+
+    // appends an ellipse
+    virtual void AddEllipse( wxDouble x, wxDouble y, wxDouble w, wxDouble h);
+
+    // appends a rounded rectangle
+    virtual void AddRoundedRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h, wxDouble radius);
+
+    // returns the native path
+    virtual void * GetNativePath() const = 0;
+
+    // give the native path returned by GetNativePath() back (there might be some deallocations necessary)
+    virtual void UnGetNativePath(void *p) const= 0;
+
+    // transforms each point of this path by the matrix
+    virtual void Transform( const wxGraphicsMatrixData* matrix ) =0;
+
+    // gets the bounding box enclosing all points (possibly including control points)
+    virtual void GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *h) const=0;
+
+    virtual bool Contains( wxDouble x, wxDouble y, int fillStyle = wxODDEVEN_RULE) const=0;
 };
 
-class WXDLLIMPEXP_CORE wxGraphicsMatrix : public wxGraphicsObject
+class WXDLLIMPEXP_CORE wxGraphicsPath : public wxGraphicsObject
 {
 public :
-	wxGraphicsMatrix(wxGraphicsRenderer* renderer) : wxGraphicsObject(renderer) {}
-	
-	virtual ~wxGraphicsMatrix() {}
-	
-    virtual wxGraphicsMatrix *Clone() const = 0;
-
-	// concatenates the matrix
-	virtual void Concat( const wxGraphicsMatrix *t ) = 0;
-	void Concat( const wxGraphicsMatrix &t ) { Concat( &t ); }
-	
-	// copies the passed in matrix
-	virtual void Copy( const wxGraphicsMatrix *t )  = 0;
-	void Copy( const wxGraphicsMatrix &t ) { Copy( &t ); }
-
-	// sets the matrix to the respective values
-	virtual void Set(wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0, 
-		wxDouble tx=0.0, wxDouble ty=0.0) = 0;
-
-	// makes this the inverse matrix
-	virtual void Invert() = 0;
-	
-	// returns true if the elements of the transformation matrix are equal ?
-    virtual bool IsEqual( const wxGraphicsMatrix* t) const  = 0;
-	bool IsEqual( const wxGraphicsMatrix& t) const { return IsEqual( &t ); }
-	
-	// return true if this is the identity matrix
-	virtual bool IsIdentity()  = 0;
-	
+    wxGraphicsPath()  {}
+    virtual ~wxGraphicsPath() {}
+    
     //
-    // transformation
+    // These are the path primitives from which everything else can be constructed
     //
+
+    // begins a new subpath at (x,y)
+    virtual void MoveToPoint( wxDouble x, wxDouble y );
+    void MoveToPoint( const wxPoint2DDouble& p);
+
+    // adds a straight line from the current point to (x,y) 
+    virtual void AddLineToPoint( wxDouble x, wxDouble y );
+    void AddLineToPoint( const wxPoint2DDouble& p);
+
+    // adds a cubic Bezier curve from the current point, using two control points and an end point
+    virtual void AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y ) ;
+    void AddCurveToPoint( const wxPoint2DDouble& c1, const wxPoint2DDouble& c2, const wxPoint2DDouble& e);
     
-    // add the translation to this matrix
-    virtual void Translate( wxDouble dx , wxDouble dy ) = 0;
+    // adds another path
+    virtual void AddPath( const wxGraphicsPath& path );
 
-    // add the scale to this matrix
-    virtual void Scale( wxDouble xScale , wxDouble yScale ) = 0;
+    // closes the current sub-path
+    virtual void CloseSubpath() ;
+
+    // gets the last point of the current path, (0,0) if not yet set
+    virtual void GetCurrentPoint( wxDouble* x, wxDouble* y) const;
+    wxPoint2DDouble GetCurrentPoint() const;
+
+    // adds an arc of a circle centering at (x,y) with radius (r) from startAngle to endAngle
+    virtual void AddArc( wxDouble x, wxDouble y, wxDouble r, wxDouble startAngle, wxDouble endAngle, bool clockwise ) ;
+    void AddArc( const wxPoint2DDouble& c, wxDouble r, wxDouble startAngle, wxDouble endAngle, bool clockwise);
 
-    // add the rotation to this matrix (radians)
-    virtual void Rotate( wxDouble angle ) = 0;	
-	
     //
-    // apply the transforms
+    // These are convenience functions which - if not available natively will be assembled 
+    // using the primitives from above
     //
-	
-	// applies that matrix to the point
-	virtual void TransformPoint( wxDouble *x, wxDouble *y ) = 0;
-	
-	// applies the matrix except for translations
-	virtual void TransformDistance( wxDouble *dx, wxDouble *dy ) =0;
-	
-	// returns the native representation
-	virtual void * GetNativeMatrix() const = 0;
-	
-    DECLARE_NO_COPY_CLASS(wxGraphicsMatrix)
-    DECLARE_ABSTRACT_CLASS(wxGraphicsMatrix)
+
+    // adds a quadratic Bezier curve from the current point, using a control point and an end point
+    virtual void AddQuadCurveToPoint( wxDouble cx, wxDouble cy, wxDouble x, wxDouble y );
+
+    // appends a rectangle as a new closed subpath 
+    virtual void AddRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h );
+
+    // appends an ellipsis as a new closed subpath fitting the passed rectangle
+    virtual void AddCircle( wxDouble x, wxDouble y, wxDouble r );
+
+    // appends a an arc to two tangents connecting (current) to (x1,y1) and (x1,y1) to (x2,y2), also a straight line from (current) to (x1,y1)
+    virtual void AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2, wxDouble y2, wxDouble r ) ;
+    
+    // appends an ellipse
+    virtual void AddEllipse( wxDouble x, wxDouble y, wxDouble w, wxDouble h);
+
+    // appends a rounded rectangle
+    virtual void AddRoundedRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h, wxDouble radius);
+
+    // returns the native path
+    virtual void * GetNativePath() const;
+    
+    // give the native path returned by GetNativePath() back (there might be some deallocations necessary)
+    virtual void UnGetNativePath(void *p)const;
+    
+    // transforms each point of this path by the matrix
+    virtual void Transform( const wxGraphicsMatrix& matrix );
+    
+    // gets the bounding box enclosing all points (possibly including control points)
+    virtual void GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *h)const;
+    wxRect2DDouble GetBox()const;
+    
+    virtual bool Contains( wxDouble x, wxDouble y, int fillStyle = wxODDEVEN_RULE)const;
+    bool Contains( const wxPoint2DDouble& c, int fillStyle = wxODDEVEN_RULE)const;
+    
+    const wxGraphicsPathData* GetPathData() const 
+    { return (const wxGraphicsPathData*) GetRefData(); }
+    wxGraphicsPathData* GetPathData() 
+    { return (wxGraphicsPathData*) GetRefData(); }
+
+private :
+    DECLARE_DYNAMIC_CLASS(wxGraphicsPath)
 } ;
 
+extern WXDLLEXPORT_DATA(wxGraphicsPath) wxNullGraphicsPath;
+
+
 class WXDLLIMPEXP_CORE wxGraphicsContext : public wxGraphicsObject
 {
 public:
@@ -231,36 +395,42 @@ public:
     virtual ~wxGraphicsContext();
     
     static wxGraphicsContext* Create( const wxWindowDC& dc) ;
-	
+    
+#ifdef __WXMSW__
+    static wxGraphicsContext * Create( const wxMemoryDC& dc) ;
+#endif    
+
     static wxGraphicsContext* CreateFromNative( void * context ) ;
 
-#ifdef __WXMAC__
     static wxGraphicsContext* CreateFromNativeWindow( void * window ) ;
-#endif
+
     static wxGraphicsContext* Create( wxWindow* window ) ;
 
-    wxGraphicsPath * CreatePath();
-	
-    virtual wxGraphicsPen* CreatePen(const wxPen& pen);
+    // create a context that can be used for measuring texts only, no drawing allowed
+    static wxGraphicsContext * Create();
+
+    wxGraphicsPath CreatePath() const;
+    
+    virtual wxGraphicsPen CreatePen(const wxPen& pen) const;
     
-    virtual wxGraphicsBrush* CreateBrush(const wxBrush& brush );
+    virtual wxGraphicsBrush CreateBrush(const wxBrush& brush ) const;
     
     // sets the brush to a linear gradient, starting at (x1,y1) with color c1 to (x2,y2) with color c2
-    virtual wxGraphicsBrush* CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2, 
-        const wxColour&c1, const wxColour&c2);
+    virtual wxGraphicsBrush CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2, 
+        const wxColour&c1, const wxColour&c2) const;
 
     // sets the brush to a radial gradient originating at (xo,yc) with color oColor and ends on a circle around (xc,yc) 
     // with radius r and color cColor
-    virtual wxGraphicsBrush* CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
-        const wxColour &oColor, const wxColour &cColor);
+    virtual wxGraphicsBrush CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
+        const wxColour &oColor, const wxColour &cColor) const;
 
     // sets the font
-    virtual wxGraphicsFont* CreateFont( const wxFont &font , const wxColour &col = *wxBLACK );
+    virtual wxGraphicsFont CreateFont( const wxFont &font , const wxColour &col = *wxBLACK ) const;
 
-	// create a 'native' matrix corresponding to these values
-	virtual wxGraphicsMatrix* CreateMatrix( wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0, 
-		wxDouble tx=0.0, wxDouble ty=0.0);
-	
+    // create a 'native' matrix corresponding to these values
+    virtual wxGraphicsMatrix CreateMatrix( wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0, 
+        wxDouble tx=0.0, wxDouble ty=0.0) const;
+    
     // push the current state of the context, ie the transformation matrix on a stack
     virtual void PushState() = 0;
 
@@ -272,12 +442,18 @@ public:
 
     // clips drawings to the rect
     virtual void Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h ) = 0;
-	
-	// resets the clipping to original extent
-	virtual void ResetClip() = 0 ;
+    
+    // resets the clipping to original extent
+    virtual void ResetClip() = 0 ;
 
-	// returns the native context
-	virtual void * GetNativeContext() = 0;
+    // returns the native context
+    virtual void * GetNativeContext() = 0;
+
+    // returns the current logical function
+    virtual int GetLogicalFunction() const { return m_logicalFunction; }
+    
+    // sets the current logical function, returns true if it supported
+    virtual bool SetLogicalFunction(int function) ;
 
     //
     // transformation : changes the current transformation matrix CTM of the context
@@ -291,43 +467,44 @@ public:
 
     // rotate (radians)
     virtual void Rotate( wxDouble angle ) = 0;
-	
-	// concatenates this transform with the current transform of this context
-	virtual void ConcatTransform( const wxGraphicsMatrix* matrix ) = 0;
+    
+    // concatenates this transform with the current transform of this context
+    virtual void ConcatTransform( const wxGraphicsMatrix& matrix ) = 0;
 
-	// sets the transform of this context
-	virtual void SetTransform( const wxGraphicsMatrix* matrix ) = 0;
+    // sets the transform of this context
+    virtual void SetTransform( const wxGraphicsMatrix& matrix ) = 0;
 
-	// gets the matrix of this context
-	virtual void GetTransform( wxGraphicsMatrix* matrix ) = 0;
+    // gets the matrix of this context
+    virtual wxGraphicsMatrix GetTransform() const = 0;
     //
     // setting the paint
     //
     
     // sets the pen
-    virtual void SetPen( wxGraphicsPen* pen , bool release = true );
+    virtual void SetPen( const wxGraphicsPen& pen );
     
     void SetPen( const wxPen& pen );
 
     // sets the brush for filling
-    virtual void SetBrush( wxGraphicsBrush* brush , bool release = true );
+    virtual void SetBrush( const wxGraphicsBrush& brush );
     
     void SetBrush( const wxBrush& brush );
 
     // sets the font
-    virtual void SetFont( wxGraphicsFont* font, bool release = true );
+    virtual void SetFont( const wxGraphicsFont& font );
     
     void SetFont( const wxFont& font, const wxColour& colour );
+
     
     // strokes along a path with the current pen
-    virtual void StrokePath( const wxGraphicsPath *path ) = 0;
+    virtual void StrokePath( const wxGraphicsPath& path ) = 0;
 
     // fills a path with the current brush
-    virtual void FillPath( const wxGraphicsPath *path, int fillStyle = wxWINDING_RULE ) = 0;
+    virtual void FillPath( const wxGraphicsPath& path, int fillStyle = wxODDEVEN_RULE ) = 0;
 
     // draws a path by first filling and then stroking
-    virtual void DrawPath( const wxGraphicsPath *path, int fillStyle = wxWINDING_RULE );
-	
+    virtual void DrawPath( const wxGraphicsPath& path, int fillStyle = wxODDEVEN_RULE );
+    
     //
     // text
     //
@@ -336,6 +513,10 @@ public:
 
     virtual void DrawText( const wxString &str, wxDouble x, wxDouble y, wxDouble angle );
 
+    virtual void DrawText( const wxString &str, wxDouble x, wxDouble y, const wxGraphicsBrush& backgroundBrush ) ;
+
+    virtual void DrawText( const wxString &str, wxDouble x, wxDouble y, wxDouble angle, const wxGraphicsBrush& backgroundBrush );
+
     virtual void GetTextExtent( const wxString &text, wxDouble *width, wxDouble *height,
         wxDouble *descent, wxDouble *externalLeading ) const  = 0;
 
@@ -363,7 +544,7 @@ public:
     virtual void StrokeLines( size_t n, const wxPoint2DDouble *beginPoints, const wxPoint2DDouble *endPoints);
 
     // draws a polygon
-    virtual void DrawLines( size_t n, const wxPoint2DDouble *points, int fillStyle = wxWINDING_RULE );
+    virtual void DrawLines( size_t n, const wxPoint2DDouble *points, int fillStyle = wxODDEVEN_RULE );
 
     // draws a polygon
     virtual void DrawRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h);
@@ -376,16 +557,15 @@ public:
 
      // wrappers using wxPoint2DDouble TODO
 
-protected :
     // helper to determine if a 0.5 offset should be applied for the drawing operation
     virtual bool ShouldOffset() const { return false; }
 
-    wxGraphicsPen* m_pen;
-    bool m_releasePen;
-    wxGraphicsBrush* m_brush;
-    bool m_releaseBrush;
-    wxGraphicsFont* m_font;
-    bool m_releaseFont;
+protected :
+
+    wxGraphicsPen m_pen;
+    wxGraphicsBrush m_brush;
+    wxGraphicsFont m_font;
+    int m_logicalFunction;
 
 private :
     DECLARE_NO_COPY_CLASS(wxGraphicsContext)
@@ -401,26 +581,26 @@ private :
 class WXDLLIMPEXP_CORE wxGraphicsFigure : public wxGraphicsObject
 {
 public :
-	wxGraphicsFigure(wxGraphicsRenderer* renderer) ;
-		
-	virtual ~wxGraphicsFigure() ;
-	
-	void SetPath( wxGraphicsMatrix* matrix );
-	
-	void SetMatrix( wxGraphicsPath* path);
-
-	// draws this object on the context
-	virtual void Draw( wxGraphicsContext* cg );
-	
-	// returns the path of this object
-	wxGraphicsPath* GetPath() { return m_path; }
-	
-	// returns the transformation matrix of this object, may be null if there is no transformation necessary
-	wxGraphicsMatrix* GetMatrix() { return m_matrix; }
-	
+    wxGraphicsFigure(wxGraphicsRenderer* renderer) ;
+        
+    virtual ~wxGraphicsFigure() ;
+    
+    void SetPath( wxGraphicsMatrix* matrix );
+    
+    void SetMatrix( wxGraphicsPath* path);
+
+    // draws this object on the context
+    virtual void Draw( wxGraphicsContext* cg );
+    
+    // returns the path of this object
+    wxGraphicsPath* GetPath() { return m_path; }
+    
+    // returns the transformation matrix of this object, may be null if there is no transformation necessary
+    wxGraphicsMatrix* GetMatrix() { return m_matrix; }
+    
 private :
-	wxGraphicsMatrix* m_matrix;
-	wxGraphicsPath* m_path;
+    wxGraphicsMatrix* m_matrix;
+    wxGraphicsPath* m_path;
     
     DECLARE_DYNAMIC_CLASS(wxGraphicsFigure)
 } ;
@@ -440,47 +620,52 @@ public :
 
     virtual ~wxGraphicsRenderer() {}
 
-	static wxGraphicsRenderer* GetDefaultRenderer();
+    static wxGraphicsRenderer* GetDefaultRenderer();
+
+    // Context
 
-	// Context
+    virtual wxGraphicsContext * CreateContext( const wxWindowDC& dc) = 0 ;
+#ifdef __WXMSW__
+    virtual wxGraphicsContext * CreateContext( const wxMemoryDC& dc) = 0 ;
+#endif    
+    virtual wxGraphicsContext * CreateContextFromNativeContext( void * context ) = 0;
 
-	virtual wxGraphicsContext * CreateContext( const wxWindowDC& dc) = 0 ;
-	
-	virtual wxGraphicsContext * CreateContextFromNativeContext( void * context ) = 0;
+    virtual wxGraphicsContext * CreateContextFromNativeWindow( void * window ) = 0;
 
-	virtual wxGraphicsContext * CreateContextFromNativeWindow( void * window ) = 0;
+    virtual wxGraphicsContext * CreateContext( wxWindow* window ) = 0;
 
-	virtual wxGraphicsContext * CreateContext( wxWindow* window ) = 0;
+    // create a context that can be used for measuring texts only, no drawing allowed
+    virtual wxGraphicsContext * CreateMeasuringContext() = 0;
 
-	// Path
-	
-    virtual wxGraphicsPath * CreatePath() = 0;
+    // Path
+    
+    virtual wxGraphicsPath CreatePath() = 0;
 
-	// Matrix
-	
-	virtual wxGraphicsMatrix * CreateMatrix( wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0, 
-		wxDouble tx=0.0, wxDouble ty=0.0) = 0;
+    // Matrix
+    
+    virtual wxGraphicsMatrix CreateMatrix( wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0, 
+        wxDouble tx=0.0, wxDouble ty=0.0) = 0;
         
     // Paints
     
-    virtual wxGraphicsPen* CreatePen(const wxPen& pen) = 0 ;
+    virtual wxGraphicsPen CreatePen(const wxPen& pen) = 0 ;
     
-    virtual wxGraphicsBrush* CreateBrush(const wxBrush& brush ) = 0 ;
+    virtual wxGraphicsBrush CreateBrush(const wxBrush& brush ) = 0 ;
     
     // sets the brush to a linear gradient, starting at (x1,y1) with color c1 to (x2,y2) with color c2
-    virtual wxGraphicsBrush* CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2, 
+    virtual wxGraphicsBrush CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2, 
         const wxColour&c1, const wxColour&c2) = 0;
 
     // sets the brush to a radial gradient originating at (xo,yc) with color oColor and ends on a circle around (xc,yc) 
     // with radius r and color cColor
-    virtual wxGraphicsBrush* CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
+    virtual wxGraphicsBrush CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
         const wxColour &oColor, const wxColour &cColor) = 0;
 
    // sets the font
-    virtual wxGraphicsFont* CreateFont( const wxFont &font , const wxColour &col = *wxBLACK ) = 0;
+    virtual wxGraphicsFont CreateFont( const wxFont &font , const wxColour &col = *wxBLACK ) = 0;
     
 private :
-	DECLARE_NO_COPY_CLASS(wxGraphicsRenderer)
+    DECLARE_NO_COPY_CLASS(wxGraphicsRenderer)
     DECLARE_ABSTRACT_CLASS(wxGraphicsRenderer)
 } ;