include/wx/motif/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:      Julian Smart
   7 // Modified by:
   8 // Created:     17/09/98
   9 // RCS-ID:      $Id$
  10 // Copyright:   (c) Julian Smart
  11 // Licence:     wxWindows licence
  12 /////////////////////////////////////////////////////////////////////////////
  13
  14 #ifndef _WX_METAFIILE_H_
  15 #define _WX_METAFIILE_H_
  16
  17 #ifdef __GNUG__
  18 #pragma interface "metafile.h"
  19 #endif
  20
  21 #include "wx/setup.h"
  22
  23 /*
  24 * Metafile and metafile device context classes - work in Windows 3.1 only
  25 *
  26 */
  27
  28 class WXDLLEXPORT wxDC;
  29 class WXDLLEXPORT wxMetaFile: public wxObject
  30 {
  31     DECLARE_DYNAMIC_CLASS(wxMetaFile)
  32 public:
  33     wxMetaFile(const wxString& file = "");
  34     ~wxMetaFile();
  35
  36     // After this is called, the metafile cannot be used for anything
  37     // since it is now owned by the clipboard.
  38     virtual bool SetClipboard(int width = 0, int height = 0);
  39
  40     virtual bool Play(wxDC *dc);
  41     // TODO
  42     inline bool Ok() { return FALSE; };
  43
  44 };
  45
  46 class WXDLLEXPORT wxMetaFileDC: public wxDC
  47 {
  48     DECLARE_DYNAMIC_CLASS(wxMetaFileDC)
  49
  50 public:
  51     // Don't supply origin and extent
  52     // Supply them to wxMakeMetaFilePlaceable instead.
  53     wxMetaFileDC(const wxString& file = "");
  54
  55     // Supply origin and extent (recommended).
  56     // Then don't need to supply them to wxMakeMetaFilePlaceable.
  57     wxMetaFileDC(const wxString& file, int xext, int yext, int xorg, int yorg);
  58
  59     ~wxMetaFileDC();
  60
  61     // Should be called at end of drawing
  62     virtual wxMetaFile *Close();
  63     virtual void SetMapMode(int mode);
  64     virtual void GetTextExtent(const wxString& string, float *x, float *y,
  65         float *descent = NULL, float *externalLeading = NULL,
  66         wxFont *theFont = NULL, bool use16bit = FALSE);
  67
  68     // Implementation
  69     inline wxMetaFile *GetMetaFile() { return m_metaFile; }
  70     inline void SetMetaFile(wxMetaFile *mf) { m_metaFile = mf; }
  71     inline int GetWindowsMappingMode() { return m_windowsMappingMode; }
  72     inline void SetWindowsMappingMode(int mm) { m_windowsMappingMode = mm; }
  73
  74 protected:
  75     int m_windowsMappingMode;
  76     wxMetaFile *m_metaFile;
  77 };
  78
  79 /*
  80 * Pass filename of existing non-placeable metafile, and bounding box.
  81 * Adds a placeable metafile header, sets the mapping mode to anisotropic,
  82 * and sets the window origin and extent to mimic the wxMM_TEXT mapping mode.
  83 *
  84 */
  85
  86 // No origin or extent
  87 bool WXDLLEXPORT wxMakeMetaFilePlaceable(const wxString& filename, float scale = 1.0);
  88
  89 // Optional origin and extent
  90 bool WXDLLEXPORT wxMakeMetaFilePlaceable(const wxString& filename, int x1, int y1, int x2, int y2, float scale = 1.0, bool useOriginAndExtent = TRUE);
  91
  92 #endif
  93 // _WX_METAFIILE_H_