Allow testing for existence of specific file types in wxFileName.

[wxWidgets.git] / include / wx / graphics.h

diff --git a/include/wx/graphics.h b/include/wx/graphics.h
old mode 100755 (executable)
new mode 100644 (file)
index 6de106c..656a338
--- a/include/wx/graphics.h
+++ b/include/wx/graphics.h
@@ -12,168 +12,589 @@
 #ifndef _WX_GRAPHICS_H_
 #define _WX_GRAPHICS_H_
 
 #ifndef _WX_GRAPHICS_H_
 #define _WX_GRAPHICS_H_
 

+#include "wx/defs.h"
+

 #if wxUSE_GRAPHICS_CONTEXT
 
 #include "wx/geometry.h"
 #include "wx/dynarray.h"
 #if wxUSE_GRAPHICS_CONTEXT
 
 #include "wx/geometry.h"
 #include "wx/dynarray.h"

+#include "wx/dc.h"
+#include "wx/image.h"
+#include "wx/vector.h"
+
+enum wxAntialiasMode
+{
+    wxANTIALIAS_NONE, // should be 0
+    wxANTIALIAS_DEFAULT
+};
+
+enum wxInterpolationQuality
+{
+    // default interpolation
+    wxINTERPOLATION_DEFAULT,
+    // no interpolation
+    wxINTERPOLATION_NONE, 
+    // fast interpolation, suited for interactivity
+    wxINTERPOLATION_FAST,
+    // better quality
+    wxINTERPOLATION_GOOD,
+    // best quality, not suited for interactivity
+    wxINTERPOLATION_BEST
+};

 
 

-class WXDLLEXPORT wxWindowDC;
+enum wxCompositionMode
+{
+    // R = Result, S = Source, D = Destination, premultiplied with alpha
+    // Ra, Sa, Da their alpha components
+
+    // classic Porter-Duff compositions
+    // http://keithp.com/~keithp/porterduff/p253-porter.pdf
+
+    wxCOMPOSITION_INVALID = -1, /* indicates invalid/unsupported mode */
+    wxCOMPOSITION_CLEAR, /* R = 0 */
+    wxCOMPOSITION_SOURCE, /* R = S */
+    wxCOMPOSITION_OVER, /* R = S + D*(1 - Sa) */
+    wxCOMPOSITION_IN, /* R = S*Da */
+    wxCOMPOSITION_OUT, /* R = S*(1 - Da) */
+    wxCOMPOSITION_ATOP, /* R = S*Da + D*(1 - Sa) */
+
+    wxCOMPOSITION_DEST, /* R = D, essentially a noop */
+    wxCOMPOSITION_DEST_OVER, /* R = S*(1 - Da) + D */
+    wxCOMPOSITION_DEST_IN, /* R = D*Sa */
+    wxCOMPOSITION_DEST_OUT, /* R = D*(1 - Sa) */
+    wxCOMPOSITION_DEST_ATOP, /* R = S*(1 - Da) + D*Sa */
+    wxCOMPOSITION_XOR, /* R = S*(1 - Da) + D*(1 - Sa) */
+
+    // mathematical compositions
+    wxCOMPOSITION_ADD /* R = S + D */
+};
+
+class WXDLLIMPEXP_FWD_CORE wxWindowDC;
+class WXDLLIMPEXP_FWD_CORE wxMemoryDC;
+#if wxUSE_PRINTING_ARCHITECTURE
+class WXDLLIMPEXP_FWD_CORE wxPrinterDC;
+#endif
+#ifdef __WXMSW__
+#if wxUSE_ENH_METAFILE
+class WXDLLIMPEXP_FWD_CORE wxEnhMetaFileDC;
+#endif
+#endif
+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;
+class WXDLLIMPEXP_FWD_CORE wxGraphicsBitmap;

 
 /*
  * notes about the graphics context apis
  *
 
 /*
  * notes about the graphics context apis
  *

- * angles : are measured in radians, 0.0 being in direction of positiv x axis, PI/2 being 
+ * angles : are measured in radians, 0.0 being in direction of positiv x axis, PI/2 being

  * in direction of positive y axis.
  */
  * in direction of positive y axis.
  */

- 
-class WXDLLEXPORT wxGraphicsPath : public wxObject
+
+// 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_FWD_CORE wxGraphicsObjectRefData;
+class WXDLLIMPEXP_FWD_CORE wxGraphicsBitmapData;
+class WXDLLIMPEXP_FWD_CORE wxGraphicsMatrixData;
+class WXDLLIMPEXP_FWD_CORE wxGraphicsPathData;
+
+class WXDLLIMPEXP_CORE wxGraphicsObject : public wxObject

 {
 {

-public :
-    wxGraphicsPath() {}
-    virtual ~wxGraphicsPath() {}
+public:
+    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:
+    virtual wxObjectRefData* CreateRefData() const;
+    virtual wxObjectRefData* CloneRefData(const wxObjectRefData* data) const;
+
+    DECLARE_DYNAMIC_CLASS(wxGraphicsObject)
+};
+
+class WXDLLIMPEXP_CORE wxGraphicsPen : public wxGraphicsObject
+{
+public:
+    wxGraphicsPen() {}
+    virtual ~wxGraphicsPen() {}
+private:
+    DECLARE_DYNAMIC_CLASS(wxGraphicsPen)
+};
+
+extern WXDLLIMPEXP_DATA_CORE(wxGraphicsPen) wxNullGraphicsPen;
+
+class WXDLLIMPEXP_CORE wxGraphicsBrush : public wxGraphicsObject
+{
+public:
+    wxGraphicsBrush() {}
+    virtual ~wxGraphicsBrush() {}
+private:
+    DECLARE_DYNAMIC_CLASS(wxGraphicsBrush)
+};
+
+extern WXDLLIMPEXP_DATA_CORE(wxGraphicsBrush) wxNullGraphicsBrush;
+
+class WXDLLIMPEXP_CORE wxGraphicsFont : public wxGraphicsObject
+{
+public:
+    wxGraphicsFont() {}
+    virtual ~wxGraphicsFont() {}
+private:
+    DECLARE_DYNAMIC_CLASS(wxGraphicsFont)
+};
+
+extern WXDLLIMPEXP_DATA_CORE(wxGraphicsFont) wxNullGraphicsFont;
+
+class WXDLLIMPEXP_CORE wxGraphicsBitmap : public wxGraphicsObject
+{
+public:
+    wxGraphicsBitmap() {}
+    virtual ~wxGraphicsBitmap() {}
+
+    // Convert bitmap to wxImage: this is more efficient than converting to
+    // wxBitmap first and then to wxImage and also works without X server
+    // connection under Unix that wxBitmap requires.
+#if wxUSE_IMAGE
+    wxImage ConvertToImage() const;
+#endif // wxUSE_IMAGE

     
     

+    void* GetNativeBitmap() const;
+
+    const wxGraphicsBitmapData* GetBitmapData() const
+    { return (const wxGraphicsBitmapData*) GetRefData(); }
+    wxGraphicsBitmapData* GetBitmapData()
+    { return (wxGraphicsBitmapData*) GetRefData(); }
+
+private:
+    DECLARE_DYNAMIC_CLASS(wxGraphicsBitmap)
+};
+
+extern WXDLLIMPEXP_DATA_CORE(wxGraphicsBitmap) wxNullGraphicsBitmap;
+
+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 WXDLLIMPEXP_DATA_CORE(wxGraphicsMatrix) wxNullGraphicsMatrix;
+
+class WXDLLIMPEXP_CORE wxGraphicsPath : public wxGraphicsObject
+{
+public:
+    wxGraphicsPath()  {}
+    virtual ~wxGraphicsPath() {}
+

     //
     // These are the path primitives from which everything else can be constructed
     //
 
     // begins a new subpath at (x,y)
     //
     // 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 ) = 0;
+    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 ) = 0;
+    // 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
 
     // 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;
+    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);
+
+    // adds another path
+    virtual void AddPath( const wxGraphicsPath& path );

 
     // closes the current sub-path
 
     // closes the current sub-path

-    virtual void CloseSubpath() = 0;
+    virtual void CloseSubpath();

 
     // gets the last point of the current path, (0,0) if not yet set
 
     // gets the last point of the current path, (0,0) if not yet set

-    virtual void GetCurrentPoint( wxDouble& x, wxDouble&y) = 0;
+    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
 
     // 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;
+    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);

 
     //
 
     //

-    // These are convenience functions which - if not available natively will be assembled 
+    // These are convenience functions which - if not available natively will be assembled

     // using the primitives from above
     //
 
     // 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 );
 
     // using the primitives from above
     //
 
     // 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 
+    // 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 );
 
     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 );
 

-    // 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)
-    virtual void AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2, wxDouble y2, 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 );

 
 

-    // wrappers using wxPoint2DDoubles
+    // appends an ellipse
+    virtual void AddEllipse( wxDouble x, wxDouble y, wxDouble w, wxDouble h);

 
 

-    wxPoint2DDouble GetCurrentPoint();
+    // appends a rounded rectangle
+    virtual void AddRoundedRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h, wxDouble radius);

 
 

-    void MoveToPoint( const wxPoint2DDouble& p);
+    // returns the native path
+    virtual void * GetNativePath() const;

 
 

-    void AddLineToPoint( const wxPoint2DDouble& p);
+    // give the native path returned by GetNativePath() back (there might be some deallocations necessary)
+    virtual void UnGetNativePath(void *p)const;

 
 

-    void AddCurveToPoint( const wxPoint2DDouble& c1, const wxPoint2DDouble& c2, const wxPoint2DDouble& e);
+    // transforms each point of this path by the matrix
+    virtual void Transform( const wxGraphicsMatrix& matrix );

 
 

-    void AddArc( const wxPoint2DDouble& c, wxDouble r, wxDouble startAngle, wxDouble endAngle, bool clockwise);
-       
-       // 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;
-
-    DECLARE_NO_COPY_CLASS(wxGraphicsPath)
-    DECLARE_ABSTRACT_CLASS(wxGraphicsPath)
+    // 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, wxPolygonFillMode fillStyle = wxODDEVEN_RULE)const;
+    bool Contains( const wxPoint2DDouble& c, wxPolygonFillMode fillStyle = wxODDEVEN_RULE)const;
+
+    const wxGraphicsPathData* GetPathData() const
+    { return (const wxGraphicsPathData*) GetRefData(); }
+    wxGraphicsPathData* GetPathData()
+    { return (wxGraphicsPathData*) GetRefData(); }
+
+private:
+    DECLARE_DYNAMIC_CLASS(wxGraphicsPath)

 };
 
 };
 

-/*
-class WXDLLEXPORT wxGraphicsMatrix
+extern WXDLLIMPEXP_DATA_CORE(wxGraphicsPath) wxNullGraphicsPath;
+
+
+// Describes a single gradient stop.
+class wxGraphicsGradientStop

 {
 {

-public :
-       wxGraphicsMatrix() {}
-       
-       virtual ~wxGraphicsMatrix() {}
-       
-       wxGraphicsMatrix* Concat( const wxGraphicsMatrix *t ) const;
-       
-       // returns the inverse matrix
-       wxGraphicsMatrix* Invert() const;
-       
-       // returns true if the elements of the transformation matrix are equal ?
-    bool operator==(const wxGraphicsMatrix& t) const;
-       
-       // return true if this is the identity matrix
-       bool IsIdentity();
-       
-    //
-    // transformation
-    //
-    
-    // translate
-    virtual void Translate( wxDouble dx , wxDouble dy ) = 0;
+public:
+    wxGraphicsGradientStop(wxColour col = wxTransparentColour,
+                           float pos = 0.)
+        : m_col(col),
+          m_pos(pos)
+    {
+    }

 
 

-    // scale
-    virtual void Scale( wxDouble xScale , wxDouble yScale ) = 0;
+    // default copy ctor, assignment operator and dtor are ok

 
 

-    // rotate (radians)
-    virtual void Rotate( wxDouble angle ) = 0; 
-} ;
-*/
+    const wxColour& GetColour() const { return m_col; }
+    void SetColour(const wxColour& col) { m_col = col; }
+
+    float GetPosition() const { return m_pos; }
+    void SetPosition(float pos)
+    {
+        wxASSERT_MSG( pos >= 0 && pos <= 1, "invalid gradient stop position" );
+
+        m_pos = pos;
+    }
+
+private:
+    // The colour of this gradient band.
+    wxColour m_col;
+
+    // Its starting position: 0 is the beginning and 1 is the end.
+    float m_pos;
+};
+
+// A collection of gradient stops ordered by their positions (from lowest to
+// highest). The first stop (index 0, position 0.0) is always the starting
+// colour and the last one (index GetCount() - 1, position 1.0) is the end
+// colour.
+class WXDLLIMPEXP_CORE wxGraphicsGradientStops
+{
+public:
+    wxGraphicsGradientStops(wxColour startCol = wxTransparentColour,
+                            wxColour endCol = wxTransparentColour)
+    {
+        // we can't use Add() here as it relies on having start/end stops as
+        // first/last array elements so do it manually
+        m_stops.push_back(wxGraphicsGradientStop(startCol, 0.f));
+        m_stops.push_back(wxGraphicsGradientStop(endCol, 1.f));
+    }
+
+    // default copy ctor, assignment operator and dtor are ok for this class
+
+
+    // Add a stop in correct order.
+    void Add(const wxGraphicsGradientStop& stop);
+    void Add(wxColour col, float pos) { Add(wxGraphicsGradientStop(col, pos)); }
+
+    // Get the number of stops.
+    unsigned GetCount() const { return m_stops.size(); }
+
+    // Return the stop at the given index (which must be valid).
+    wxGraphicsGradientStop Item(unsigned n) const { return m_stops.at(n); }
+
+    // Get/set start and end colours.
+    void SetStartColour(wxColour col)
+        { m_stops[0].SetColour(col); }
+    wxColour GetStartColour() const
+        { return m_stops[0].GetColour(); }
+    void SetEndColour(wxColour col)
+        { m_stops[m_stops.size() - 1].SetColour(col); }
+    wxColour GetEndColour() const
+        { return m_stops[m_stops.size() - 1].GetColour(); }
+
+private:
+    // All the stops stored in ascending order of positions.
+    wxVector<wxGraphicsGradientStop> m_stops;
+};

 
 

-class WXDLLEXPORT wxGraphicsContext : public wxObject
+class WXDLLIMPEXP_CORE wxGraphicsContext : public wxGraphicsObject

 {
 public:
 {
 public:

-    wxGraphicsContext() {}
+    wxGraphicsContext(wxGraphicsRenderer* renderer);

 
 

-    virtual ~wxGraphicsContext() {}
-    
-    static wxGraphicsContext* Create( const wxWindowDC& dc) ;
-       
-    static wxGraphicsContext* CreateFromNative( void * context ) ;
+    virtual ~wxGraphicsContext();

 
 

-#ifdef __WXMAC__
-    static wxGraphicsContext* CreateFromNativeWindow( void * window ) ;
+    static wxGraphicsContext* Create( const wxWindowDC& dc);
+    static wxGraphicsContext * Create( const wxMemoryDC& dc);
+#if wxUSE_PRINTING_ARCHITECTURE
+    static wxGraphicsContext * Create( const wxPrinterDC& dc);

 #endif
 #endif

-    static wxGraphicsContext* Create( wxWindow* window ) ;
-
-    // creates a path instance that corresponds to the type of graphics context, ie GDIPlus, cairo, CoreGraphics ...
-    virtual wxGraphicsPath * CreatePath() = 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) = 0;
-       */
-       
+#ifdef __WXMSW__
+#if wxUSE_ENH_METAFILE
+    static wxGraphicsContext * Create( const wxEnhMetaFileDC& dc);
+#endif
+#endif
+
+    static wxGraphicsContext* CreateFromNative( void * context );
+
+    static wxGraphicsContext* CreateFromNativeWindow( void * window );
+
+    static wxGraphicsContext* Create( wxWindow* window );
+
+#if wxUSE_IMAGE
+    // Create a context for drawing onto a wxImage. The image life time must be
+    // greater than that of the context itself as when the context is destroyed
+    // it will copy its contents to the specified image.
+    static wxGraphicsContext* Create(wxImage& image);
+#endif // wxUSE_IMAGE
+
+    // create a context that can be used for measuring texts only, no drawing allowed
+    static wxGraphicsContext * Create();
+
+    // begin a new document (relevant only for printing / pdf etc) if there is a progress dialog, message will be shown
+    virtual bool StartDoc( const wxString& message );
+
+    // done with that document (relevant only for printing / pdf etc)
+    virtual void EndDoc();
+
+    // opens a new page  (relevant only for printing / pdf etc) with the given size in points
+    // (if both are null the default page size will be used)
+    virtual void StartPage( wxDouble width = 0, wxDouble height = 0 );
+
+    // ends the current page  (relevant only for printing / pdf etc)
+    virtual void EndPage();
+
+    // make sure that the current content of this context is immediately visible
+    virtual void Flush();
+
+    wxGraphicsPath CreatePath() const;
+
+    virtual wxGraphicsPen CreatePen(const wxPen& pen) const;
+
+    virtual wxGraphicsBrush CreateBrush(const wxBrush& brush ) const;
+
+    // sets the brush to a linear gradient, starting at (x1,y1) and ending at
+    // (x2,y2) with the given boundary colours or the specified stops
+    wxGraphicsBrush
+    CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
+                              wxDouble x2, wxDouble y2,
+                              const wxColour& c1, const wxColour& c2) const;
+    wxGraphicsBrush
+    CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
+                              wxDouble x2, wxDouble y2,
+                              const wxGraphicsGradientStops& stops) const;
+
+    // sets the brush to a radial gradient originating at (xo,yc) and ending
+    // on a circle around (xc,yc) with the given radius; the colours may be
+    // specified by just the two extremes or the full array of gradient stops
+    wxGraphicsBrush
+    CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
+                              wxDouble xc, wxDouble yc, wxDouble radius,
+                              const wxColour& oColor, const wxColour& cColor) const;
+
+    wxGraphicsBrush
+    CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
+                              wxDouble xc, wxDouble yc, wxDouble radius,
+                              const wxGraphicsGradientStops& stops) const;
+
+    // creates a font
+    virtual wxGraphicsFont CreateFont( const wxFont &font , const wxColour &col = *wxBLACK ) const;
+    virtual wxGraphicsFont CreateFont(double sizeInPixels,
+                                      const wxString& facename,
+                                      int flags = wxFONTFLAG_DEFAULT,
+                                      const wxColour& col = *wxBLACK) const;
+
+    // create a native bitmap representation
+    virtual wxGraphicsBitmap CreateBitmap( const wxBitmap &bitmap ) const;
+#if wxUSE_IMAGE
+    wxGraphicsBitmap CreateBitmapFromImage(const wxImage& image) const;
+#endif // wxUSE_IMAGE
+
+    // create a native bitmap representation
+    virtual wxGraphicsBitmap CreateSubBitmap( const wxGraphicsBitmap &bitmap, wxDouble x, wxDouble y, wxDouble w, wxDouble h  ) 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) const;
+
+    wxGraphicsMatrix CreateMatrix( const wxAffineMatrix2DBase& mat ) const
+    {
+        wxMatrix2D mat2D;
+        wxPoint2DDouble tr;
+        mat.Get(&mat2D, &tr);
+
+        return CreateMatrix(mat2D.m_11, mat2D.m_12, mat2D.m_21, mat2D.m_22,
+                            tr.m_x, tr.m_y);
+    }
+

     // push the current state of the context, ie the transformation matrix on a stack
     virtual void PushState() = 0;
 
     // pops a stored state from the stack
     virtual void PopState() = 0;
 
     // push the current state of the context, ie the transformation matrix on a stack
     virtual void PushState() = 0;
 
     // pops a stored state from the stack
     virtual void PopState() = 0;
 

-    // clips drawings to the region, combined to current clipping region
+    // clips drawings to the region intersected with the current clipping region

     virtual void Clip( const wxRegion &region ) = 0;
 
     virtual void Clip( const wxRegion &region ) = 0;
 

-    // clips drawings to the rect
+    // clips drawings to the rect intersected with the current clipping region

     virtual void Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h ) = 0;
     virtual void Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h ) = 0;

-       
-       // resets the clipping to original extent
-       virtual void ResetClip() = 0 ;

 
 

-       // returns the native context
-       virtual void * GetNativeContext() = 0;
+    // resets the clipping to original extent
+    virtual void ResetClip() = 0;
+
+    // returns the native context
+    virtual void * GetNativeContext() = 0;
+
+    // returns the current shape antialiasing mode
+    virtual wxAntialiasMode GetAntialiasMode() const { return m_antialias; }
+
+    // sets the antialiasing mode, returns true if it supported
+    virtual bool SetAntialiasMode(wxAntialiasMode antialias) = 0;
+
+    // returns the current interpolation quality
+    virtual wxInterpolationQuality GetInterpolationQuality() const { return m_interpolation; }
+    
+    // sets the interpolation quality, returns true if it supported
+    virtual bool SetInterpolationQuality(wxInterpolationQuality interpolation) = 0;
+    
+    // returns the current compositing operator
+    virtual wxCompositionMode GetCompositionMode() const { return m_composition; }
+
+    // sets the compositing operator, returns true if it supported
+    virtual bool SetCompositionMode(wxCompositionMode op) = 0;
+
+    // returns the size of the graphics context in device coordinates
+    void GetSize(wxDouble* width, wxDouble* height) const
+    {
+        if ( width )
+            *width = m_width;
+        if ( height )
+            *height = m_height;
+    }
+
+    // returns the resolution of the graphics context in device points per inch
+    virtual void GetDPI( wxDouble* dpiX, wxDouble* dpiY);
+
+#if 0
+    // sets the current alpha on this context
+    virtual void SetAlpha( wxDouble alpha );
+
+    // returns the alpha on this context
+    virtual wxDouble GetAlpha() const;
+#endif
+
+    // all rendering is done into a fully transparent temporary context
+    virtual void BeginLayer(wxDouble opacity) = 0;
+
+    // composites back the drawings into the context with the opacity given at
+    // the BeginLayer call
+    virtual void EndLayer() = 0;

 
     //
     // transformation : changes the current transformation matrix CTM of the context
     //
 
     //
     // transformation : changes the current transformation matrix CTM of the context
     //

-    
+

     // translate
     virtual void Translate( wxDouble dx , wxDouble dy ) = 0;
 
     // translate
     virtual void Translate( wxDouble dx , wxDouble dy ) = 0;
 


@@ -183,50 +604,64 @@ public:
     // rotate (radians)
     virtual void Rotate( wxDouble angle ) = 0;
 
     // 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;
+
+    // sets the transform of this context
+    virtual void SetTransform( const wxGraphicsMatrix& matrix ) = 0;
+
+    // gets the matrix of this context
+    virtual wxGraphicsMatrix GetTransform() const = 0;

     //
     // setting the paint
     //
     //
     // setting the paint
     //

-    
-    // sets the pan
-    virtual void SetPen( const wxPen &pen ) = 0;

 
 

-    // sets the brush for filling
-    virtual void SetBrush( const wxBrush &brush ) = 0;
+    // sets the pen
+    virtual void SetPen( const wxGraphicsPen& pen );

 
 

-    // sets the brush to a linear gradient, starting at (x1,y1) with color c1 to (x2,y2) with color c2
-    virtual void SetLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2, 
-        const wxColour&c1, const wxColour&c2) = 0;
+    void SetPen( const wxPen& pen );

 
 

-    // 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 void SetRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
-        const wxColour &oColor, const wxColour &cColor) = 0;
+    // sets the brush for filling
+    virtual void SetBrush( const wxGraphicsBrush& brush );
+
+    void SetBrush( const wxBrush& brush );

 
     // sets the font
 
     // sets the font

-    virtual void SetFont( const wxFont &font ) = 0;
-    
-    // sets the text color
-    virtual void SetTextColor( const wxColour &col ) = 0;
+    virtual void SetFont( const wxGraphicsFont& font );
+
+    void SetFont( const wxFont& font, const wxColour& colour );
+

 
     // strokes along a path with the current pen
 
     // 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
 
     // fills a path with the current brush

-    virtual void FillPath( const wxGraphicsPath *path, int fillStyle = wxWINDING_RULE ) = 0;
+    virtual void FillPath( const wxGraphicsPath& path, wxPolygonFillMode fillStyle = wxODDEVEN_RULE ) = 0;

 
     // draws a path by first filling and then stroking
 
     // 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, wxPolygonFillMode fillStyle = wxODDEVEN_RULE );
+

     //
     // text
     //
     //
     // text
     //

-    
-    virtual void DrawText( const wxString &str, wxDouble x, wxDouble y ) = 0;

 
 

-    virtual void DrawText( const wxString &str, wxDouble x, wxDouble y, wxDouble angle );
+    void DrawText( const wxString &str, wxDouble x, wxDouble y )
+        { DoDrawText(str, x, y); }
+
+    void DrawText( const wxString &str, wxDouble x, wxDouble y, wxDouble angle )
+        { DoDrawRotatedText(str, x, y, angle); }
+
+    void DrawText( const wxString &str, wxDouble x, wxDouble y,
+                   const wxGraphicsBrush& backgroundBrush )
+        { DoDrawFilledText(str, x, y, backgroundBrush); }
+
+    void DrawText( const wxString &str, wxDouble x, wxDouble y,
+                   wxDouble angle, const wxGraphicsBrush& backgroundBrush )
+        { DoDrawRotatedFilledText(str, x, y, angle, backgroundBrush); }
+

 
     virtual void GetTextExtent( const wxString &text, wxDouble *width, wxDouble *height,
 
     virtual void GetTextExtent( const wxString &text, wxDouble *width, wxDouble *height,

-        wxDouble *descent, wxDouble *externalLeading ) const  = 0;
+        wxDouble *descent = NULL, wxDouble *externalLeading = NULL ) const  = 0;

 
     virtual void GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const = 0;
 
 
     virtual void GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const = 0;
 


@@ -234,6 +669,8 @@ public:
     // image support
     //
 
     // image support
     //
 

+    virtual void DrawBitmap( const wxGraphicsBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h ) = 0;
+

     virtual void DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h ) = 0;
 
     virtual void DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h ) = 0;
     virtual void DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h ) = 0;
 
     virtual void DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h ) = 0;


@@ -241,7 +678,7 @@ public:
     //
     // convenience methods
     //
     //
     // convenience methods
     //

-    
+

     // strokes a single line
     virtual void StrokeLine( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2);
 
     // strokes a single line
     virtual void StrokeLine( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2);
 


@@ -252,9 +689,9 @@ public:
     virtual void StrokeLines( size_t n, const wxPoint2DDouble *beginPoints, const wxPoint2DDouble *endPoints);
 
     // draws a polygon
     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, wxPolygonFillMode fillStyle = wxODDEVEN_RULE );

 
 

-    // draws a polygon
+    // draws a rectangle

     virtual void DrawRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h);
 
     // draws an ellipse
     virtual void DrawRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h);
 
     // draws an ellipse


@@ -263,16 +700,190 @@ public:
     // draws a rounded rectangle
     virtual void DrawRoundedRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h, wxDouble radius);
 
     // draws a rounded rectangle
     virtual void DrawRoundedRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h, wxDouble radius);
 

-    // wrappers using wxPoint2DDouble TODO
+     // wrappers using wxPoint2DDouble TODO

 
 

-    

     // helper to determine if a 0.5 offset should be applied for the drawing operation
     virtual bool ShouldOffset() const { return false; }
     
     // helper to determine if a 0.5 offset should be applied for the drawing operation
     virtual bool ShouldOffset() const { return false; }
     

-    DECLARE_NO_COPY_CLASS(wxGraphicsContext)
+    // indicates whether the context should try to offset for pixel boundaries, this only makes sense on 
+    // bitmap devices like screen, by default this is turned off
+    virtual void EnableOffset(bool enable = true);
+    
+    void DisableOffset() { EnableOffset(false); }
+    bool OffsetEnabled() { return m_enableOffset; }
+    
+protected:
+    // These fields must be initialized in the derived class ctors.
+    wxDouble m_width,
+             m_height;
+
+    wxGraphicsPen m_pen;
+    wxGraphicsBrush m_brush;
+    wxGraphicsFont m_font;
+    wxAntialiasMode m_antialias;
+    wxCompositionMode m_composition;
+    wxInterpolationQuality m_interpolation;
+    bool m_enableOffset;
+
+protected:
+    // implementations of overloaded public functions: we use different names
+    // for them to avoid the virtual function hiding problems in the derived
+    // classes
+    virtual void DoDrawText(const wxString& str, wxDouble x, wxDouble y) = 0;
+    virtual void DoDrawRotatedText(const wxString& str, wxDouble x, wxDouble y,
+                                   wxDouble angle);
+    virtual void DoDrawFilledText(const wxString& str, wxDouble x, wxDouble y,
+                                  const wxGraphicsBrush& backgroundBrush);
+    virtual void DoDrawRotatedFilledText(const wxString& str,
+                                         wxDouble x, wxDouble y,
+                                         wxDouble angle,
+                                         const wxGraphicsBrush& backgroundBrush);
+
+    wxDECLARE_NO_COPY_CLASS(wxGraphicsContext);

     DECLARE_ABSTRACT_CLASS(wxGraphicsContext)
 };
 
     DECLARE_ABSTRACT_CLASS(wxGraphicsContext)
 };
 

+#if 0
+
+//
+// A graphics figure allows to cache path, pen etc creations, also will be a basis for layering/grouping elements
+//
+
+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; }
+
+private:
+    wxGraphicsMatrix* m_matrix;
+    wxGraphicsPath* m_path;
+
+    DECLARE_DYNAMIC_CLASS(wxGraphicsFigure)
+};
+
+#endif
+
+//
+// The graphics renderer is the instance corresponding to the rendering engine used, eg there is ONE core graphics renderer
+// instance on OSX. This instance is pointed back to by all objects created by it. Therefore you can create eg additional
+// paths at any point from a given matrix etc.
+//
+
+class WXDLLIMPEXP_CORE wxGraphicsRenderer : public wxObject
+{
+public:
+    wxGraphicsRenderer() {}
+
+    virtual ~wxGraphicsRenderer() {}
+
+    static wxGraphicsRenderer* GetDefaultRenderer();
+
+    static wxGraphicsRenderer* GetCairoRenderer();
+    // Context
+
+    virtual wxGraphicsContext * CreateContext( const wxWindowDC& dc) = 0;
+    virtual wxGraphicsContext * CreateContext( const wxMemoryDC& dc) = 0;
+#if wxUSE_PRINTING_ARCHITECTURE
+    virtual wxGraphicsContext * CreateContext( const wxPrinterDC& dc) = 0;

 #endif
 #endif

+#ifdef __WXMSW__
+#if wxUSE_ENH_METAFILE
+    virtual wxGraphicsContext * CreateContext( const wxEnhMetaFileDC& dc) = 0;
+#endif
+#endif
+
+    virtual wxGraphicsContext * CreateContextFromNativeContext( void * context ) = 0;
+
+    virtual wxGraphicsContext * CreateContextFromNativeWindow( void * window ) = 0;
+
+    virtual wxGraphicsContext * CreateContext( wxWindow* window ) = 0;
+
+#if wxUSE_IMAGE
+    virtual wxGraphicsContext * CreateContextFromImage(wxImage& image) = 0;
+#endif // wxUSE_IMAGE
+
+    // create a context that can be used for measuring texts only, no drawing allowed
+    virtual wxGraphicsContext * CreateMeasuringContext() = 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;
+
+    // Paints
+
+    virtual wxGraphicsPen CreatePen(const wxPen& pen) = 0;
+
+    virtual wxGraphicsBrush CreateBrush(const wxBrush& brush ) = 0;
+
+    // Gradient brush creation functions may not honour all the stops specified
+    // stops and use just its boundary colours (this is currently the case
+    // under OS X)
+    virtual wxGraphicsBrush
+    CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
+                              wxDouble x2, wxDouble y2,
+                              const wxGraphicsGradientStops& stops) = 0;
+
+    virtual wxGraphicsBrush
+    CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
+                              wxDouble xc, wxDouble yc,
+                              wxDouble radius,
+                              const wxGraphicsGradientStops& stops) = 0;
+
+    // sets the font
+    virtual wxGraphicsFont CreateFont( const wxFont &font , const wxColour &col = *wxBLACK ) = 0;
+    virtual wxGraphicsFont CreateFont(double sizeInPixels,
+                                      const wxString& facename,
+                                      int flags = wxFONTFLAG_DEFAULT,
+                                      const wxColour& col = *wxBLACK) = 0;
+
+    // create a native bitmap representation
+    virtual wxGraphicsBitmap CreateBitmap( const wxBitmap &bitmap ) = 0;
+#if wxUSE_IMAGE
+    virtual wxGraphicsBitmap CreateBitmapFromImage(const wxImage& image) = 0;
+    virtual wxImage CreateImageFromBitmap(const wxGraphicsBitmap& bmp) = 0;
+#endif // wxUSE_IMAGE
+
+    // create a graphics bitmap from a native bitmap
+    virtual wxGraphicsBitmap CreateBitmapFromNativeBitmap( void* bitmap ) = 0;
+
+    // create a subimage from a native image representation
+    virtual wxGraphicsBitmap CreateSubBitmap( const wxGraphicsBitmap &bitmap, wxDouble x, wxDouble y, wxDouble w, wxDouble h  ) = 0;
+
+private:
+    wxDECLARE_NO_COPY_CLASS(wxGraphicsRenderer);
+    DECLARE_ABSTRACT_CLASS(wxGraphicsRenderer)
+};
+
+
+#if wxUSE_IMAGE
+inline
+wxImage wxGraphicsBitmap::ConvertToImage() const
+{
+    wxGraphicsRenderer* renderer = GetRenderer();
+    return renderer ? renderer->CreateImageFromBitmap(*this) : wxNullImage;
+}
+#endif // wxUSE_IMAGE
+
+#endif // wxUSE_GRAPHICS_CONTEXT

 
 #endif // _WX_GRAPHICS_H_
 
 #endif // _WX_GRAPHICS_H_