include/wx/mac/carbon/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:      Stefan Csomor
   7 // Modified by:
   8 // Created:     1998-01-01
   9 // RCS-ID:      $Id$
  10 // Copyright:   (c) Stefan Csomor
  11 // Licence:     wxWindows licence
  12 /////////////////////////////////////////////////////////////////////////////
  13
  14
  15 #ifndef _WX_METAFIILE_H_
  16 #define _WX_METAFIILE_H_
  17
  18 #include "wx/dc.h"
  19 #include "wx/gdiobj.h"
  20
  21 #if wxUSE_DATAOBJ
  22 #include "wx/dataobj.h"
  23 #endif
  24
  25 #include "wx/mac/carbon/dcclient.h"
  26
  27 /*
  28  * Metafile and metafile device context classes
  29  *
  30  */
  31
  32 #define wxMetaFile wxMetafile
  33 #define wxMetaFileDC wxMetafileDC
  34
  35 class WXDLLIMPEXP_FWD_CORE wxMetafile;
  36 class wxMetafileRefData ;
  37
  38 #define M_METAFILEDATA ((wxMetafileRefData *)m_refData)
  39
  40 class WXDLLEXPORT wxMetafile: public wxGDIObject
  41 {
  42     DECLARE_DYNAMIC_CLASS(wxMetafile)
  43 public:
  44     wxMetafile(const wxString& file = wxEmptyString);
  45     virtual ~wxMetafile(void);
  46
  47     // After this is called, the metafile cannot be used for anything
  48     // since it is now owned by the clipboard.
  49     virtual bool SetClipboard(int width = 0, int height = 0);
  50
  51     virtual bool Play(wxDC *dc);
  52     bool Ok() const { return IsOk(); }
  53     bool IsOk() const ;
  54
  55     wxSize GetSize() const;
  56     int GetWidth() const { return GetSize().x; }
  57     int GetHeight() const { return GetSize().y; }
  58
  59     // Implementation
  60     WXHMETAFILE GetHMETAFILE() const ;
  61     void SetHMETAFILE(WXHMETAFILE mf) ;
  62 #ifndef __LP64__
  63     // Since the native metafile format is PDF for Quartz
  64     // we need a call that allows setting PICT content for
  65     // backwards compatibility
  66     void SetPICT(void* pictHandle) ;
  67 #endif
  68 };
  69
  70
  71 class WXDLLEXPORT wxMetafileDCImpl: public wxGCDCImpl
  72 {
  73 public:
  74     wxMetafileDCImpl( wxDC *owner,
  75                       const wxString& filename,
  76                       int width, int height,
  77                       const wxString& description );
  78
  79     virtual ~wxMetafileDCImpl();
  80
  81     // Should be called at end of drawing
  82     virtual wxMetafile *Close();
  83
  84     // Implementation
  85     wxMetafile *GetMetaFile(void) const { return m_metaFile; }
  86     void SetMetaFile(wxMetafile *mf) { m_metaFile = mf; }
  87
  88 protected:
  89     virtual void DoGetSize(int *width, int *height) const;
  90
  91     wxMetafile*   m_metaFile;
  92
  93 private:
  94     DECLARE_CLASS(wxMetafileDCImpl)
  95     DECLARE_NO_COPY_CLASS(wxMetafileDCImpl)
  96 };
  97
  98 class WXDLLEXPORT wxMetafileDC: public wxDC
  99 {
 100  public:
 101     // the ctor parameters specify the filename (empty for memory metafiles),
 102     // the metafile picture size and the optional description/comment
 103     wxMetafileDC(  const wxString& filename = wxEmptyString,
 104                     int width = 0, int height = 0,
 105                     const wxString& description = wxEmptyString ) :
 106       wxDC( new wxMetafileDCImpl( this, filename, width, height, description) )
 107     { }
 108
 109     wxMetafile *GetMetafile() const
 110        { return ((wxMetafileDCImpl*)m_pimpl)->GetMetaFile(); }
 111
 112     wxMetafile *Close()
 113        { return ((wxMetafileDCImpl*)m_pimpl)->Close(); }
 114
 115 private:
 116     DECLARE_CLASS(wxMetafileDC)
 117     DECLARE_NO_COPY_CLASS(wxMetafileDC)
 118 };
 119
 120
 121 /*
 122  * Pass filename of existing non-placeable metafile, and bounding box.
 123  * Adds a placeable metafile header, sets the mapping mode to anisotropic,
 124  * and sets the window origin and extent to mimic the wxMM_TEXT mapping mode.
 125  *
 126  */
 127
 128 // No origin or extent
 129 #define wxMakeMetaFilePlaceable wxMakeMetafilePlaceable
 130 bool WXDLLEXPORT wxMakeMetafilePlaceable(const wxString& filename, float scale = 1.0);
 131
 132 // Optional origin and extent
 133 bool WXDLLEXPORT wxMakeMetaFilePlaceable(const wxString& filename, int x1, int y1, int x2, int y2, float scale = 1.0, bool useOriginAndExtent = TRUE);
 134
 135 // ----------------------------------------------------------------------------
 136 // wxMetafileDataObject is a specialization of wxDataObject for metafile data
 137 // ----------------------------------------------------------------------------
 138
 139 #if wxUSE_DATAOBJ
 140 class WXDLLEXPORT wxMetafileDataObject : public wxDataObjectSimple
 141 {
 142 public:
 143   // ctors
 144   wxMetafileDataObject()
 145     : wxDataObjectSimple(wxDF_METAFILE) {  };
 146   wxMetafileDataObject(const wxMetafile& metafile)
 147     : wxDataObjectSimple(wxDF_METAFILE), m_metafile(metafile) { }
 148
 149     // virtual functions which you may override if you want to provide data on
 150     // demand only - otherwise, the trivial default versions will be used
 151     virtual void SetMetafile(const wxMetafile& metafile)
 152         { m_metafile = metafile; }
 153     virtual wxMetafile GetMetafile() const
 154         { return m_metafile; }
 155
 156     // implement base class pure virtuals
 157     virtual size_t GetDataSize() const;
 158     virtual bool GetDataHere(void *buf) const;
 159     virtual bool SetData(size_t len, const void *buf);
 160
 161     virtual size_t GetDataSize(const wxDataFormat& WXUNUSED(format)) const
 162         { return GetDataSize(); }
 163     virtual bool GetDataHere(const wxDataFormat& WXUNUSED(format),
 164                              void *buf) const
 165         { return GetDataHere(buf); }
 166     virtual bool SetData(const wxDataFormat& WXUNUSED(format),
 167                          size_t len, const void *buf)
 168         { return SetData(len, buf); }
 169 protected:
 170   wxMetafile   m_metafile;
 171 };
 172 #endif
 173
 174 #endif
 175     // _WX_METAFIILE_H_