avoid GCC warning about type-punned pointer breaking strict aliasing rules

[wxWidgets.git] / include / wx / mac / carbon / metafile.h

diff --git a/include/wx/mac/carbon/metafile.h b/include/wx/mac/carbon/metafile.h
index 02c76aa61b502f0b50dd2c2344545ef60c5a70b8..694e45fb28b9aee8568c939d042897d10e3a87e6 100644 (file)
--- a/include/wx/mac/carbon/metafile.h
+++ b/include/wx/mac/carbon/metafile.h
@@ -8,14 +8,13 @@
 // Created:     1998-01-01
 // RCS-ID:      $Id$
 // Copyright:   (c) Stefan Csomor
-// Licence:     wxWidgets licence
+// Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
 
 #ifndef _WX_METAFIILE_H_
 #define _WX_METAFIILE_H_
 
-#if wxUSE_METAFILE
 #include "wx/dc.h"
 #include "wx/gdiobj.h"
 
@@ -23,6 +22,8 @@
 #include "wx/dataobj.h"
 #endif
 
+#include "wx/mac/carbon/dcclient.h"
+
 /*
  * Metafile and metafile device context classes
  *
@@ -31,81 +32,95 @@
 #define wxMetaFile wxMetafile
 #define wxMetaFileDC wxMetafileDC
 
-class WXDLLEXPORT wxMetafile;
-
-class WXDLLEXPORT wxMetafileRefData: public wxGDIRefData
-{
-    friend class WXDLLEXPORT wxMetafile;
-public:
-    wxMetafileRefData(void);
-    ~wxMetafileRefData(void);
-
-public:
-    WXHMETAFILE m_metafile;
-};
+class WXDLLIMPEXP_FWD_CORE wxMetafile;
+class wxMetafileRefData ;
 
 #define M_METAFILEDATA ((wxMetafileRefData *)m_refData)
 
-class WXDLLEXPORT wxMetafile: public wxGDIObject
+class WXDLLEXPORT wxMetafile : public wxGDIObject
 {
-    DECLARE_DYNAMIC_CLASS(wxMetafile)
 public:
-    // Copy constructor
-    wxMetafile(const wxMetafile& metafile)
-      : wxGDIObject()
-    { Ref(metafile); }
-
     wxMetafile(const wxString& file = wxEmptyString);
-    ~wxMetafile(void);
+    virtual ~wxMetafile(void);
 
     // After this is called, the metafile cannot be used for anything
     // since it is now owned by the clipboard.
     virtual bool SetClipboard(int width = 0, int height = 0);
 
     virtual bool Play(wxDC *dc);
-    inline bool Ok(void) const { return (M_METAFILEDATA && (M_METAFILEDATA->m_metafile != 0)); };
 
     wxSize GetSize() const;
     int GetWidth() const { return GetSize().x; }
     int GetHeight() const { return GetSize().y; }
 
     // Implementation
-    inline WXHMETAFILE GetHMETAFILE() const { return M_METAFILEDATA->m_metafile; }
+    WXHMETAFILE GetHMETAFILE() const ;
     void SetHMETAFILE(WXHMETAFILE mf) ;
+#ifndef __LP64__
+    // Since the native metafile format is PDF for Quartz
+    // we need a call that allows setting PICT content for
+    // backwards compatibility
+    void SetPICT(void* pictHandle) ;
+#endif
+
+protected:
+    virtual wxGDIRefData *CreateGDIRefData() const;
+    virtual wxGDIRefData *CloneGDIRefData(const wxGDIRefData *data) const;
+
+    DECLARE_DYNAMIC_CLASS(wxMetafile)
+};
 
-    // Operators
-    inline wxMetafile& operator = (const wxMetafile& metafile) { if (*this == metafile) return (*this); Ref(metafile); return *this; }
-    inline bool operator == (const wxMetafile& metafile) { return m_refData == metafile.m_refData; }
-    inline bool operator != (const wxMetafile& metafile) { return m_refData != metafile.m_refData; }
+
+class WXDLLEXPORT wxMetafileDCImpl: public wxGCDCImpl
+{
+public:
+    wxMetafileDCImpl( wxDC *owner,
+                      const wxString& filename,
+                      int width, int height,
+                      const wxString& description );
+
+    virtual ~wxMetafileDCImpl();
+
+    // Should be called at end of drawing
+    virtual wxMetafile *Close();
+
+    // Implementation
+    wxMetafile *GetMetaFile(void) const { return m_metaFile; }
+    void SetMetaFile(wxMetafile *mf) { m_metaFile = mf; }
 
 protected:
+    virtual void DoGetSize(int *width, int *height) const;
+
+    wxMetafile*   m_metaFile;
+
+private:
+    DECLARE_CLASS(wxMetafileDCImpl)
+    DECLARE_NO_COPY_CLASS(wxMetafileDCImpl)
 };
 
 class WXDLLEXPORT wxMetafileDC: public wxDC
 {
-  DECLARE_DYNAMIC_CLASS(wxMetafileDC)
-
  public:
     // the ctor parameters specify the filename (empty for memory metafiles),
     // the metafile picture size and the optional description/comment
-    wxMetafileDC(const wxString& filename = wxEmptyString,
+    wxMetafileDC(  const wxString& filename = wxEmptyString,
                     int width = 0, int height = 0,
-                    const wxString& description = wxEmptyString);
+                    const wxString& description = wxEmptyString ) :
+      wxDC( new wxMetafileDCImpl( this, filename, width, height, description) )
+    { }
 
-  ~wxMetafileDC(void);
+    wxMetafile *GetMetafile() const
+       { return ((wxMetafileDCImpl*)m_pimpl)->GetMetaFile(); }
 
-  // Should be called at end of drawing
-  virtual wxMetafile *Close(void);
-  virtual void DoGetSize(int *width, int *height) const ;
+    wxMetafile *Close()
+       { return ((wxMetafileDCImpl*)m_pimpl)->Close(); }
 
-  // Implementation
-  inline wxMetafile *GetMetaFile(void) const { return m_metaFile; }
-  inline void SetMetaFile(wxMetafile *mf) { m_metaFile = mf; }
-
-protected:
-  wxMetafile*   m_metaFile;
+private:
+    DECLARE_CLASS(wxMetafileDC)
+    DECLARE_NO_COPY_CLASS(wxMetafileDC)
 };
 
+
 /*
  * Pass filename of existing non-placeable metafile, and bounding box.
  * Adds a placeable metafile header, sets the mapping mode to anisotropic,
@@ -129,7 +144,7 @@ class WXDLLEXPORT wxMetafileDataObject : public wxDataObjectSimple
 {
 public:
   // ctors
-  wxMetafileDataObject() 
+  wxMetafileDataObject()
     : wxDataObjectSimple(wxDF_METAFILE) {  };
   wxMetafileDataObject(const wxMetafile& metafile)
     : wxDataObjectSimple(wxDF_METAFILE), m_metafile(metafile) { }
@@ -159,8 +174,5 @@ protected:
 };
 #endif
 
-#endif // wxUSE_METAFILE
-
-
 #endif
     // _WX_METAFIILE_H_