Resolve GCC's 'type-punned pointer will break strict-aliasing rules' warning by break...

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

diff --git a/include/wx/graphics.h b/include/wx/graphics.h
index 4d94b753003a515f8ac7958bee1b1852e6efb306..34f92d7cd509bcf2eafffa01993128b79a36cd64 100644 (file)
--- a/include/wx/graphics.h
+++ b/include/wx/graphics.h
@@ -30,10 +30,10 @@ 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_CLEAR, /* R = 0 */
     wxCOMPOSITION_SOURCE, /* R = S */
     wxCOMPOSITION_OVER, /* R = S + D*(1 - Sa) */
@@ -47,7 +47,7 @@ enum wxCompositionMode
     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 */
 };
@@ -390,13 +390,13 @@ public:
 
     // 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 compositing operator
     virtual wxCompositionMode GetCompositionMode() const { return m_composition; }
-    
+
     // sets the compositing operator, returns true if it supported
     virtual bool SetCompositionMode(wxCompositionMode op) = 0;
 
@@ -417,7 +417,7 @@ public:
     // all rendering is done into a fully transparent temporary context
     virtual void BeginLayer(wxDouble opacity) = 0;
 
-    // composites back the drawings into the content with the opacity given at 
+    // composites back the drawings into the context with the opacity given at
     // the BeginLayer call
     virtual void EndLayer() = 0;
 
@@ -491,7 +491,7 @@ public:
 
 
     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;
 
@@ -499,9 +499,7 @@ public:
     // image support
     //
 
-#ifndef __WXGTK20__
     virtual void DrawBitmap( const wxGraphicsBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h ) = 0;
-#endif
 
     virtual void DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h ) = 0;
 
@@ -613,6 +611,7 @@ public:
 
     static wxGraphicsRenderer* GetDefaultRenderer();
 
+    static wxGraphicsRenderer* GetCairoRenderer();
     // Context
 
     virtual wxGraphicsContext * CreateContext( const wxWindowDC& dc) = 0;
@@ -657,14 +656,14 @@ public:
    // sets the font
     virtual wxGraphicsFont CreateFont( const wxFont &font , const wxColour &col = *wxBLACK ) = 0;
 
-#ifndef __WXGTK20__
     // create a native bitmap representation
     virtual wxGraphicsBitmap CreateBitmap( const wxBitmap &bitmap ) = 0;
+    
+    // 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;
-#endif
-
 
 private:
     wxDECLARE_NO_COPY_CLASS(wxGraphicsRenderer);