include/wx/osx/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/osx/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 WXDLLIMPEXP_CORE wxMetafile : public wxGDIObject
  41 {
  42 public:
  43     wxMetafile(const wxString& file = wxEmptyString);
  44     virtual ~wxMetafile(void);
  45
  46     // After this is called, the metafile cannot be used for anything
  47     // since it is now owned by the clipboard.
  48     virtual bool SetClipboard(int width = 0, int height = 0);
  49
  50     virtual bool Play(wxDC *dc);
  51
  52     wxSize GetSize() const;
  53     int GetWidth() const { return GetSize().x; }
  54     int GetHeight() const { return GetSize().y; }
  55
  56     // Implementation
  57     WXHMETAFILE GetHMETAFILE() const ;
  58     void SetHMETAFILE(WXHMETAFILE mf) ;
  59 #ifndef __LP64__
  60     // Since the native metafile format is PDF for Quartz
  61     // we need a call that allows setting PICT content for
  62     // backwards compatibility
  63     void SetPICT(void* pictHandle) ;
  64 #endif
  65
  66 protected:
  67     virtual wxGDIRefData *CreateGDIRefData() const;
  68     virtual wxGDIRefData *CloneGDIRefData(const wxGDIRefData *data) const;
  69
  70     DECLARE_DYNAMIC_CLASS(wxMetafile)
  71 };
  72
  73
  74 class WXDLLIMPEXP_CORE wxMetafileDCImpl: public wxGCDCImpl
  75 {
  76 public:
  77     wxMetafileDCImpl( wxDC *owner,
  78                       const wxString& filename,
  79                       int width, int height,
  80                       const wxString& description );
  81
  82     virtual ~wxMetafileDCImpl();
  83
  84     // Should be called at end of drawing
  85     virtual wxMetafile *Close();
  86
  87     // Implementation
  88     wxMetafile *GetMetaFile(void) const { return m_metaFile; }
  89     void SetMetaFile(wxMetafile *mf) { m_metaFile = mf; }
  90
  91 protected:
  92     virtual void DoGetSize(int *width, int *height) const;
  93
  94     wxMetafile*   m_metaFile;
  95
  96 private:
  97     DECLARE_CLASS(wxMetafileDCImpl)
  98     wxDECLARE_NO_COPY_CLASS(wxMetafileDCImpl);
  99 };
 100
 101 class WXDLLIMPEXP_CORE wxMetafileDC: public wxDC
 102 {
 103  public:
 104     // the ctor parameters specify the filename (empty for memory metafiles),
 105     // the metafile picture size and the optional description/comment
 106     wxMetafileDC(  const wxString& filename = wxEmptyString,
 107                     int width = 0, int height = 0,
 108                     const wxString& description = wxEmptyString ) :
 109       wxDC( new wxMetafileDCImpl( this, filename, width, height, description) )
 110     { }
 111
 112     wxMetafile *GetMetafile() const
 113        { return ((wxMetafileDCImpl*)m_pimpl)->GetMetaFile(); }
 114
 115     wxMetafile *Close()
 116        { return ((wxMetafileDCImpl*)m_pimpl)->Close(); }
 117
 118 private:
 119     DECLARE_CLASS(wxMetafileDC)
 120     wxDECLARE_NO_COPY_CLASS(wxMetafileDC);
 121 };
 122
 123
 124 /*
 125  * Pass filename of existing non-placeable metafile, and bounding box.
 126  * Adds a placeable metafile header, sets the mapping mode to anisotropic,
 127  * and sets the window origin and extent to mimic the wxMM_TEXT mapping mode.
 128  *
 129  */
 130
 131 // No origin or extent
 132 #define wxMakeMetaFilePlaceable wxMakeMetafilePlaceable
 133 bool WXDLLIMPEXP_CORE wxMakeMetafilePlaceable(const wxString& filename, float scale = 1.0);
 134
 135 // Optional origin and extent
 136 bool WXDLLIMPEXP_CORE wxMakeMetaFilePlaceable(const wxString& filename, int x1, int y1, int x2, int y2, float scale = 1.0, bool useOriginAndExtent = true);
 137
 138 // ----------------------------------------------------------------------------
 139 // wxMetafileDataObject is a specialization of wxDataObject for metafile data
 140 // ----------------------------------------------------------------------------
 141
 142 #if wxUSE_DATAOBJ
 143 class WXDLLIMPEXP_CORE wxMetafileDataObject : public wxDataObjectSimple
 144 {
 145 public:
 146   // ctors
 147   wxMetafileDataObject()
 148     : wxDataObjectSimple(wxDF_METAFILE) {  };
 149   wxMetafileDataObject(const wxMetafile& metafile)
 150     : wxDataObjectSimple(wxDF_METAFILE), m_metafile(metafile) { }
 151
 152     // virtual functions which you may override if you want to provide data on
 153     // demand only - otherwise, the trivial default versions will be used
 154     virtual void SetMetafile(const wxMetafile& metafile)
 155         { m_metafile = metafile; }
 156     virtual wxMetafile GetMetafile() const
 157         { return m_metafile; }
 158
 159     // implement base class pure virtuals
 160     virtual size_t GetDataSize() const;
 161     virtual bool GetDataHere(void *buf) const;
 162     virtual bool SetData(size_t len, const void *buf);
 163
 164     virtual size_t GetDataSize(const wxDataFormat& WXUNUSED(format)) const
 165         { return GetDataSize(); }
 166     virtual bool GetDataHere(const wxDataFormat& WXUNUSED(format),
 167                              void *buf) const
 168         { return GetDataHere(buf); }
 169     virtual bool SetData(const wxDataFormat& WXUNUSED(format),
 170                          size_t len, const void *buf)
 171         { return SetData(len, buf); }
 172 protected:
 173   wxMetafile   m_metafile;
 174 };
 175 #endif
 176
 177 #endif
 178     // _WX_METAFIILE_H_