adding comment

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

diff --git a/include/wx/graphics.h b/include/wx/graphics.h
index d385d7db029424368c5f9f4af54d7850935b019e..656a338d3bdbbda37b3cbb3ec4fae42d7ce0edab 100644 (file)
--- a/include/wx/graphics.h
+++ b/include/wx/graphics.h
@@ -107,6 +107,7 @@ class WXDLLIMPEXP_FWD_CORE wxGraphicsBitmap;
 //
 
 class WXDLLIMPEXP_FWD_CORE wxGraphicsObjectRefData;
+class WXDLLIMPEXP_FWD_CORE wxGraphicsBitmapData;
 class WXDLLIMPEXP_FWD_CORE wxGraphicsMatrixData;
 class WXDLLIMPEXP_FWD_CORE wxGraphicsPathData;
 
@@ -174,6 +175,13 @@ public:
 #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)
@@ -510,6 +518,16 @@ public:
     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;
 
@@ -547,7 +565,7 @@ public:
     virtual bool SetCompositionMode(wxCompositionMode op) = 0;
 
     // returns the size of the graphics context in device coordinates
-    void GetSize(wxDouble* width, wxDouble* height)
+    void GetSize(wxDouble* width, wxDouble* height) const
     {
         if ( width )
             *width = m_width;