include/wx/osx/metafile.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/osx/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 // Copyright:   (c) Stefan Csomor
  10 // Licence:     wxWindows licence
  11 /////////////////////////////////////////////////////////////////////////////
  12
  13
  14 #ifndef _WX_METAFIILE_H_
  15 #define _WX_METAFIILE_H_
  16
  17 #include "wx/dc.h"
  18 #include "wx/gdiobj.h"
  19
  20 #if wxUSE_DATAOBJ
  21 #include "wx/dataobj.h"
  22 #endif
  23
  24 #include "wx/osx/dcclient.h"
  25
  26 /*
  27  * Metafile and metafile device context classes
  28  *
  29  */
  30
  31 #define wxMetaFile wxMetafile
  32 #define wxMetaFileDC wxMetafileDC
  33
  34 class WXDLLIMPEXP_FWD_CORE wxMetafile;
  35 class wxMetafileRefData ;
  36
  37 #define M_METAFILEDATA ((wxMetafileRefData *)m_refData)
  38
  39 class WXDLLIMPEXP_CORE wxMetafile : public wxGDIObject
  40 {
  41 public:
  42     wxMetafile(const wxString& file = wxEmptyString);
  43     virtual ~wxMetafile(void);
  44
  45     // After this is called, the metafile cannot be used for anything
  46     // since it is now owned by the clipboard.
  47     virtual bool SetClipboard(int width = 0, int height = 0);
  48
  49     virtual bool Play(wxDC *dc);
  50
  51     wxSize GetSize() const;
  52     int GetWidth() const { return GetSize().x; }
  53     int GetHeight() const { return GetSize().y; }
  54
  55     // Implementation
  56     WXHMETAFILE GetHMETAFILE() const ;
  57     void SetHMETAFILE(WXHMETAFILE mf) ;
  58 protected:
  59     virtual wxGDIRefData *CreateGDIRefData() const;
  60     virtual wxGDIRefData *CloneGDIRefData(const wxGDIRefData *data) const;
  61
  62     DECLARE_DYNAMIC_CLASS(wxMetafile)
  63 };
  64
  65
  66 class WXDLLIMPEXP_CORE wxMetafileDCImpl: public wxGCDCImpl
  67 {
  68 public:
  69     wxMetafileDCImpl( wxDC *owner,
  70                       const wxString& filename,
  71                       int width, int height,
  72                       const wxString& description );
  73
  74     virtual ~wxMetafileDCImpl();
  75
  76     // Should be called at end of drawing
  77     virtual wxMetafile *Close();
  78
  79     // Implementation
  80     wxMetafile *GetMetaFile(void) const { return m_metaFile; }
  81     void SetMetaFile(wxMetafile *mf) { m_metaFile = mf; }
  82
  83 protected:
  84     virtual void DoGetSize(int *width, int *height) const;
  85
  86     wxMetafile*   m_metaFile;
  87
  88 private:
  89     DECLARE_CLASS(wxMetafileDCImpl)
  90     wxDECLARE_NO_COPY_CLASS(wxMetafileDCImpl);
  91 };
  92
  93 class WXDLLIMPEXP_CORE wxMetafileDC: public wxDC
  94 {
  95  public:
  96     // the ctor parameters specify the filename (empty for memory metafiles),
  97     // the metafile picture size and the optional description/comment
  98     wxMetafileDC(  const wxString& filename = wxEmptyString,
  99                     int width = 0, int height = 0,
 100                     const wxString& description = wxEmptyString ) :
 101       wxDC( new wxMetafileDCImpl( this, filename, width, height, description) )
 102     { }
 103
 104     wxMetafile *GetMetafile() const
 105        { return ((wxMetafileDCImpl*)m_pimpl)->GetMetaFile(); }
 106
 107     wxMetafile *Close()
 108        { return ((wxMetafileDCImpl*)m_pimpl)->Close(); }
 109
 110 private:
 111     DECLARE_CLASS(wxMetafileDC)
 112     wxDECLARE_NO_COPY_CLASS(wxMetafileDC);
 113 };
 114
 115
 116 /*
 117  * Pass filename of existing non-placeable metafile, and bounding box.
 118  * Adds a placeable metafile header, sets the mapping mode to anisotropic,
 119  * and sets the window origin and extent to mimic the wxMM_TEXT mapping mode.
 120  *
 121  */
 122
 123 // No origin or extent
 124 #define wxMakeMetaFilePlaceable wxMakeMetafilePlaceable
 125 bool WXDLLIMPEXP_CORE wxMakeMetafilePlaceable(const wxString& filename, float scale = 1.0);
 126
 127 // Optional origin and extent
 128 bool WXDLLIMPEXP_CORE wxMakeMetaFilePlaceable(const wxString& filename, int x1, int y1, int x2, int y2, float scale = 1.0, bool useOriginAndExtent = true);
 129
 130 // ----------------------------------------------------------------------------
 131 // wxMetafileDataObject is a specialization of wxDataObject for metafile data
 132 // ----------------------------------------------------------------------------
 133
 134 #if wxUSE_DATAOBJ
 135 class WXDLLIMPEXP_CORE wxMetafileDataObject : public wxDataObjectSimple
 136 {
 137 public:
 138   // ctors
 139   wxMetafileDataObject()
 140     : wxDataObjectSimple(wxDF_METAFILE) {  }
 141   wxMetafileDataObject(const wxMetafile& metafile)
 142     : wxDataObjectSimple(wxDF_METAFILE), m_metafile(metafile) { }
 143
 144     // virtual functions which you may override if you want to provide data on
 145     // demand only - otherwise, the trivial default versions will be used
 146     virtual void SetMetafile(const wxMetafile& metafile)
 147         { m_metafile = metafile; }
 148     virtual wxMetafile GetMetafile() const
 149         { return m_metafile; }
 150
 151     // implement base class pure virtuals
 152     virtual size_t GetDataSize() const;
 153     virtual bool GetDataHere(void *buf) const;
 154     virtual bool SetData(size_t len, const void *buf);
 155
 156     virtual size_t GetDataSize(const wxDataFormat& WXUNUSED(format)) const
 157         { return GetDataSize(); }
 158     virtual bool GetDataHere(const wxDataFormat& WXUNUSED(format),
 159                              void *buf) const
 160         { return GetDataHere(buf); }
 161     virtual bool SetData(const wxDataFormat& WXUNUSED(format),
 162                          size_t len, const void *buf)
 163         { return SetData(len, buf); }
 164 protected:
 165   wxMetafile   m_metafile;
 166 };
 167 #endif
 168
 169 #endif
 170     // _WX_METAFIILE_H_