///////////////////////////////////////////////////////////////////////////// // Name: metafile.h // Purpose: wxMetaFile, wxMetaFileDC classes. // This probably should be restricted to Windows platforms, // but if there is an equivalent on your platform, great. // Author: David Webster // Modified by: // Created: 10/10/99 // RCS-ID: $Id$ // Copyright: (c) David Webster // Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// #ifndef _WX_METAFIILE_H_ #define _WX_METAFIILE_H_ #include "wx/setup.h" #if wxUSE_METAFILE #include "wx/dc.h" #include "wx/gdiobj.h" #if wxUSE_DRAG_AND_DROP #include "wx/dataobj.h" #endif /* * Metafile and metafile device context classes * */ #define wxMetaFile wxMetafile #define wxMetaFileDC wxMetafileDC class WXDLLEXPORT wxMetafile; class WXDLLEXPORT wxMetafileRefData: public wxGDIRefData { friend class WXDLLEXPORT wxMetafile; public: wxMetafileRefData(void); ~wxMetafileRefData(void); public: WXHANDLE m_metafile; int m_windowsMappingMode; }; #define M_METAFILEDATA ((wxMetafileRefData *)m_refData) class WXDLLEXPORT wxMetafile: public wxGDIObject { DECLARE_DYNAMIC_CLASS(wxMetafile) public: // Copy constructor inline wxMetafile(const wxMetafile& metafile) { Ref(metafile); } wxMetafile(const wxString& file = wxEmptyString); ~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)); }; // Implementation inline WXHANDLE GetHMETAFILE(void) { return M_METAFILEDATA->m_metafile; } void SetHMETAFILE(WXHANDLE mf) ; inline int GetWindowsMappingMode(void) { return M_METAFILEDATA->m_windowsMappingMode; } void SetWindowsMappingMode(int mm); // Operators inline wxMetafile& operator = (const wxMetafile& metafile) { if (*this == metafile) return (*this); Ref(metafile); return *this; } inline bool operator== (const wxMetafile& metafile) const { return m_refData == metafile.m_refData; } inline bool operator!= (const wxMetafile& metafile) const { return m_refData != metafile.m_refData; } }; class WXDLLEXPORT wxMetafileDC: public wxDC { DECLARE_DYNAMIC_CLASS(wxMetafileDC) public: // Don't supply origin and extent // Supply them to wxMakeMetaFilePlaceable instead. wxMetafileDC(const wxString& file = wxEmptyString); // Supply origin and extent (recommended). // Then don't need to supply them to wxMakeMetaFilePlaceable. wxMetafileDC(const wxString& file, int xext, int yext, int xorg, int yorg); ~wxMetafileDC(void); // Should be called at end of drawing virtual wxMetafile *Close(void); virtual void SetMapMode(int mode); virtual void GetTextExtent(const wxString& string, long *x, long *y, long *descent = NULL, long *externalLeading = NULL, wxFont *theFont = NULL, bool use16bit = false) const; // Implementation inline wxMetafile *GetMetaFile(void) const { return m_metaFile; } inline void SetMetaFile(wxMetafile *mf) { m_metaFile = mf; } inline int GetWindowsMappingMode(void) const { return m_windowsMappingMode; } inline void SetWindowsMappingMode(int mm) { m_windowsMappingMode = mm; } protected: int m_windowsMappingMode; wxMetafile* m_metaFile; private: #ifndef __WATCOMC__ // function hiding warning supression // still required ?? inline virtual void GetTextExtent( const wxString& string ,long* width ,long* height ,long* descent = NULL ,long* externalLeading = NULL ,wxFont* theFont = NULL ) const { GetTextExtent( string, width, height, descent, externalLeading, theFont, false);}; #endif }; /* * Pass filename of existing non-placeable metafile, and bounding box. * Adds a placeable metafile header, sets the mapping mode to anisotropic, * and sets the window origin and extent to mimic the wxMM_TEXT mapping mode. * */ // No origin or extent #define wxMakeMetaFilePlaceable wxMakeMetafilePlaceable bool WXDLLEXPORT wxMakeMetafilePlaceable(const wxString& filename, float scale = 1.0); // Optional origin and extent bool WXDLLEXPORT wxMakeMetaFilePlaceable( const wxString& filename ,int x1 ,int y1 ,int x2 ,int y2 ,float scale = 1.0 ,bool useOriginAndExtent = true ); // ---------------------------------------------------------------------------- // wxMetafileDataObject is a specialization of wxDataObject for metafile data // ---------------------------------------------------------------------------- // TODO: implement OLE side of things. At present, it's just for clipboard // use. #if wxUSE_DRAG_AND_DROP class WXDLLEXPORT wxMetafileDataObject : public wxDataObject { public: // ctors wxMetafileDataObject() { m_width = 0; m_height = 0; }; wxMetafileDataObject(const wxMetafile& metafile, int width = 0,int height = 0) :m_metafile(metafile) ,m_width(width) ,m_height(height) { } void SetMetafile(const wxMetafile& metafile, int w = 0, int h = 0) { m_metafile = metafile; m_width = w; m_height = h; } wxMetafile GetMetafile() const { return m_metafile; } int GetWidth() const { return m_width; } int GetHeight() const { return m_height; } virtual wxDataFormat GetFormat() const { return wxDF_METAFILE; } /* ?? // implement base class pure virtuals virtual wxDataFormat GetPreferredFormat() const { return (wxDataFormat) wxDataObject::Text; } virtual bool IsSupportedFormat(wxDataFormat format) const { return format == wxDataObject::Text || format == wxDataObject::Locale; } virtual size_t GetDataSize() const { return m_strText.Len() + 1; } // +1 for trailing '\0'of course virtual void GetDataHere(void *pBuf) const { memcpy(pBuf, m_strText.c_str(), GetDataSize()); } */ private: wxMetafile m_metafile; int m_width; int m_height; }; #endif #endif // wxUSE_METAFILE #endif // _WX_METAFIILE_H_