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 #include "wx/dc.h"
  24
  25 /*
  26  * Metafile and metafile device context classes - work in Windows 3.1 only
  27  *
  28  */
  29
  30 class WXDLLEXPORT wxDC;
  31 class WXDLLEXPORT wxMetaFile: public wxObject
  32 {
  33   DECLARE_DYNAMIC_CLASS(wxMetaFile)
  34  public:
  35   wxMetaFile(const wxString& file = "");
  36   ~wxMetaFile();
  37
  38   // After this is called, the metafile cannot be used for anything
  39   // since it is now owned by the clipboard.
  40   virtual bool SetClipboard(int width = 0, int height = 0);
  41
  42   virtual bool Play(wxDC *dc);
  43   // TODO
  44   inline bool Ok() { return FALSE; };
  45
  46 /* TODO: Implementation
  47   inline WXHANDLE GetHMETAFILE() { return m_metaFile; }
  48   inline void SetHMETAFILE(WXHANDLE mf) { m_metaFile = mf; }
  49
  50 protected:
  51   WXHANDLE m_metaFile;
  52 */
  53 };
  54
  55 class WXDLLEXPORT wxMetaFileDC: public wxDC
  56 {
  57   DECLARE_DYNAMIC_CLASS(wxMetaFileDC)
  58
  59  public:
  60   // Don't supply origin and extent
  61   // Supply them to wxMakeMetaFilePlaceable instead.
  62   wxMetaFileDC(const wxString& file = "");
  63
  64   // Supply origin and extent (recommended).
  65   // Then don't need to supply them to wxMakeMetaFilePlaceable.
  66   wxMetaFileDC(const wxString& file, int xext, int yext, int xorg, int yorg);
  67
  68   ~wxMetaFileDC();
  69
  70   // Should be called at end of drawing
  71   virtual wxMetaFile *Close();
  72   virtual void SetMapMode(int mode);
  73   virtual void GetTextExtent(const wxString& string, float *x, float *y,
  74                      float *descent = NULL, float *externalLeading = NULL,
  75                      wxFont *theFont = NULL, bool use16bit = FALSE);
  76
  77   // Implementation
  78   inline wxMetaFile *GetMetaFile() { return m_metaFile; }
  79   inline void SetMetaFile(wxMetaFile *mf) { m_metaFile = mf; }
  80   inline int GetWindowsMappingMode() { return m_windowsMappingMode; }
  81   inline void SetWindowsMappingMode(int mm) { m_windowsMappingMode = mm; }
  82
  83 protected:
  84   int m_windowsMappingMode;
  85   wxMetaFile *m_metaFile;
  86 };
  87
  88 /*
  89  * Pass filename of existing non-placeable metafile, and bounding box.
  90  * Adds a placeable metafile header, sets the mapping mode to anisotropic,
  91  * and sets the window origin and extent to mimic the wxMM_TEXT mapping mode.
  92  *
  93  */
  94
  95 // No origin or extent
  96 bool WXDLLEXPORT wxMakeMetaFilePlaceable(const wxString& filename, float scale = 1.0);
  97
  98 // Optional origin and extent
  99 bool WXDLLEXPORT wxMakeMetaFilePlaceable(const wxString& filename, int x1, int y1, int x2, int y2, float scale = 1.0, bool useOriginAndExtent = TRUE);
 100
 101 #endif
 102     // _WX_METAFIILE_H_