///////////////////////////////////////////////////////////////////////////// // Name: wx/msw/metafile.h // Purpose: wxMetaFile, wxMetaFileDC and wxMetaFileDataObject classes // Author: Julian Smart // Modified by: VZ 07.01.00: implemented wxMetaFileDataObject // Created: 01/02/97 // RCS-ID: $Id: metafile.h 46103 2007-05-18 15:14:44Z VZ $ // Copyright: (c) Julian Smart // Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// #ifndef _WX_METAFIILE_H_ #define _WX_METAFIILE_H_ #include "wx/dc.h" #include "wx/gdiobj.h" #if wxUSE_DRAG_AND_DROP #include "wx/dataobj.h" #endif // ---------------------------------------------------------------------------- // Metafile and metafile device context classes // ---------------------------------------------------------------------------- class WXDLLEXPORT wxMetafile; class WXDLLEXPORT wxMetafileRefData: public wxGDIRefData { friend class WXDLLEXPORT wxMetafile; public: wxMetafileRefData(); virtual ~wxMetafileRefData(); public: WXHANDLE m_metafile; int m_windowsMappingMode; int m_width, m_height; }; #define M_METAFILEDATA ((wxMetafileRefData *)m_refData) class WXDLLEXPORT wxMetafile: public wxGDIObject { public: wxMetafile(const wxString& file = wxEmptyString); virtual ~wxMetafile(); // 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); bool Ok() const { return IsOk(); } bool IsOk() const { return (M_METAFILEDATA && (M_METAFILEDATA->m_metafile != 0)); }; // set/get the size of metafile for clipboard operations wxSize GetSize() const { return wxSize(GetWidth(), GetHeight()); } int GetWidth() const { return M_METAFILEDATA->m_width; } int GetHeight() const { return M_METAFILEDATA->m_height; } void SetWidth(int width) { M_METAFILEDATA->m_width = width; } void SetHeight(int height) { M_METAFILEDATA->m_height = height; } // Implementation WXHANDLE GetHMETAFILE() const { return M_METAFILEDATA->m_metafile; } void SetHMETAFILE(WXHANDLE mf) ; int GetWindowsMappingMode() const { return M_METAFILEDATA->m_windowsMappingMode; } void SetWindowsMappingMode(int mm); private: DECLARE_DYNAMIC_CLASS(wxMetafile) }; class WXDLLEXPORT wxMetafileDC: public wxDC { 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); virtual ~wxMetafileDC(); // Should be called at end of drawing virtual wxMetafile *Close(); virtual void SetMapMode(int mode); #if wxABI_VERSION >= 20805 virtual void DoGetTextExtent(const wxString& string, wxCoord *x, wxCoord *y, wxCoord *descent = NULL, wxCoord *externalLeading = NULL, const wxFont *theFont = NULL) const; #endif // wx ABI 2.8.5+ // this method shouldn't have been defined here (DoGetTextExtent() is the // correct one) but keep it to avoid breaking binary backwards // compatibility virtual void GetTextExtent(const wxString& string, long *x, long *y, long *descent = NULL, long *externalLeading = NULL, wxFont *theFont = NULL, bool use16bit = false) const; // Implementation wxMetafile *GetMetaFile() const { return m_metaFile; } void SetMetaFile(wxMetafile *mf) { m_metaFile = mf; } int GetWindowsMappingMode() const { return m_windowsMappingMode; } void SetWindowsMappingMode(int mm) { m_windowsMappingMode = mm; } protected: virtual void DoGetSize(int *width, int *height) const; int m_windowsMappingMode; wxMetafile* m_metaFile; private: DECLARE_DYNAMIC_CLASS(wxMetafileDC) }; /* * 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 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 // ---------------------------------------------------------------------------- #if wxUSE_DRAG_AND_DROP class WXDLLEXPORT wxMetafileDataObject : public wxDataObjectSimple { public: // ctors wxMetafileDataObject() : wxDataObjectSimple(wxDF_METAFILE) { } wxMetafileDataObject(const wxMetafile& metafile) : wxDataObjectSimple(wxDF_METAFILE), m_metafile(metafile) { } // virtual functions which you may override if you want to provide data on // demand only - otherwise, the trivial default versions will be used virtual void SetMetafile(const wxMetafile& metafile) { m_metafile = metafile; } virtual wxMetafile GetMetafile() const { return m_metafile; } // implement base class pure virtuals virtual size_t GetDataSize() const; virtual bool GetDataHere(void *buf) const; virtual bool SetData(size_t len, const void *buf); protected: wxMetafile m_metafile; }; #endif // wxUSE_DRAG_AND_DROP #endif // _WX_METAFIILE_H_