include/wx/os2/metafile.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        metafile.h
   3 // Purpose:     wxMetaFile, wxMetaFileDC classes.
   4 //              This probably should be restricted to Windows platforms,
   5 //              but if there is an equivalent on your platform, great.
   6 // Author:      AUTHOR
   7 // Modified by:
   8 // Created:     ??/??/98
   9 // RCS-ID:      $Id$
  10 // Copyright:   (c) AUTHOR
  11 // Licence:     wxWindows licence
  12 /////////////////////////////////////////////////////////////////////////////
  13
  14
  15 #ifndef _WX_METAFIILE_H_
  16 #define _WX_METAFIILE_H_
  17
  18 #ifdef __GNUG__
  19 #pragma interface "metafile.h"
  20 #endif
  21
  22 #include "wx/setup.h"
  23
  24 /*
  25  * Metafile and metafile device context classes - work in Windows 3.1 only
  26  *
  27  */
  28
  29 class WXDLLEXPORT wxDC;
  30 class WXDLLEXPORT wxMetaFile: public wxObject
  31 {
  32   DECLARE_DYNAMIC_CLASS(wxMetaFile)
  33  public:
  34   wxMetaFile(const wxString& file = "");
  35   ~wxMetaFile();
  36
  37   // After this is called, the metafile cannot be used for anything
  38   // since it is now owned by the clipboard.
  39   virtual bool SetClipboard(int width = 0, int height = 0);
  40
  41   virtual bool Play(wxDC *dc);
  42   // TODO
  43   inline bool Ok() { return FALSE; };
  44
  45 /* TODO: Implementation
  46   inline WXHANDLE GetHMETAFILE() { return m_metaFile; }
  47   inline void SetHMETAFILE(WXHANDLE mf) { m_metaFile = mf; }
  48
  49 protected:
  50   WXHANDLE m_metaFile;
  51 */
  52 };
  53
  54 class WXDLLEXPORT wxMetaFileDC: public wxDC
  55 {
  56   DECLARE_DYNAMIC_CLASS(wxMetaFileDC)
  57
  58  public:
  59   // Don't supply origin and extent
  60   // Supply them to wxMakeMetaFilePlaceable instead.
  61   wxMetaFileDC(const wxString& file = "");
  62
  63   // Supply origin and extent (recommended).
  64   // Then don't need to supply them to wxMakeMetaFilePlaceable.
  65   wxMetaFileDC(const wxString& file, int xext, int yext, int xorg, int yorg);
  66
  67   ~wxMetaFileDC();
  68
  69   // Should be called at end of drawing
  70   virtual wxMetaFile *Close();
  71   virtual void SetMapMode(int mode);
  72   virtual void GetTextExtent(const wxString& string, float *x, float *y,
  73                      float *descent = NULL, float *externalLeading = NULL,
  74                      wxFont *theFont = NULL, bool use16bit = FALSE);
  75
  76   // Implementation
  77   inline wxMetaFile *GetMetaFile() { return m_metaFile; }
  78   inline void SetMetaFile(wxMetaFile *mf) { m_metaFile = mf; }
  79   inline int GetWindowsMappingMode() { return m_windowsMappingMode; }
  80   inline void SetWindowsMappingMode(int mm) { m_windowsMappingMode = mm; }
  81
  82 protected:
  83   int m_windowsMappingMode;
  84   wxMetaFile *m_metaFile;
  85 };
  86
  87 /*
  88  * Pass filename of existing non-placeable metafile, and bounding box.
  89  * Adds a placeable metafile header, sets the mapping mode to anisotropic,
  90  * and sets the window origin and extent to mimic the wxMM_TEXT mapping mode.
  91  *
  92  */
  93
  94 // No origin or extent
  95 bool WXDLLEXPORT wxMakeMetaFilePlaceable(const wxString& filename, float scale = 1.0);
  96
  97 // Optional origin and extent
  98 bool WXDLLEXPORT wxMakeMetaFilePlaceable(const wxString& filename, int x1, int y1, int x2, int y2, float scale = 1.0, bool useOriginAndExtent = TRUE);
  99
 100 #endif
 101     // _WX_METAFIILE_H_