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: metafile.h 49032 2007-10-04 07:29:24Z SC $ 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/* 26 * Metafile and metafile device context classes 27 * 28 */ 29 30#define wxMetaFile wxMetafile 31#define wxMetaFileDC wxMetafileDC 32 33class WXDLLEXPORT wxMetafile; 34class wxMetafileRefData ; 35 36#define M_METAFILEDATA ((wxMetafileRefData *)m_refData) 37 38class WXDLLEXPORT wxMetafile: public wxGDIObject 39{ 40 DECLARE_DYNAMIC_CLASS(wxMetafile) 41public: 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 bool Ok() const { return IsOk(); } 51 bool IsOk() const ; 52 53 wxSize GetSize() const; 54 int GetWidth() const { return GetSize().x; } 55 int GetHeight() const { return GetSize().y; } 56 57 // Implementation 58 WXHMETAFILE GetHMETAFILE() const ; 59 void SetHMETAFILE(WXHMETAFILE mf) ; 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}; 65 66class WXDLLEXPORT wxMetafileDC: public wxDC 67{ 68 DECLARE_DYNAMIC_CLASS(wxMetafileDC) 69 70 public: 71 // the ctor parameters specify the filename (empty for memory metafiles), 72 // the metafile picture size and the optional description/comment 73 wxMetafileDC(const wxString& filename = wxEmptyString, 74 int width = 0, int height = 0, 75 const wxString& description = wxEmptyString); 76 77 virtual ~wxMetafileDC(void); 78 79 // Should be called at end of drawing 80 virtual wxMetafile *Close(void); 81 82 // Implementation 83 inline wxMetafile *GetMetaFile(void) const { return m_metaFile; } 84 inline void SetMetaFile(wxMetafile *mf) { m_metaFile = mf; } 85 86protected: 87 virtual void DoGetSize(int *width, int *height) const; 88 89 wxMetafile* m_metaFile; 90}; 91 92/* 93 * Pass filename of existing non-placeable metafile, and bounding box. 94 * Adds a placeable metafile header, sets the mapping mode to anisotropic, 95 * and sets the window origin and extent to mimic the wxMM_TEXT mapping mode. 96 * 97 */ 98 99// No origin or extent 100#define wxMakeMetaFilePlaceable wxMakeMetafilePlaceable 101bool WXDLLEXPORT wxMakeMetafilePlaceable(const wxString& filename, float scale = 1.0); 102 103// Optional origin and extent 104bool WXDLLEXPORT wxMakeMetaFilePlaceable(const wxString& filename, int x1, int y1, int x2, int y2, float scale = 1.0, bool useOriginAndExtent = TRUE); 105 106// ---------------------------------------------------------------------------- 107// wxMetafileDataObject is a specialization of wxDataObject for metafile data 108// ---------------------------------------------------------------------------- 109 110#if wxUSE_DATAOBJ 111class WXDLLEXPORT wxMetafileDataObject : public wxDataObjectSimple 112{ 113public: 114 // ctors 115 wxMetafileDataObject() 116 : wxDataObjectSimple(wxDF_METAFILE) { }; 117 wxMetafileDataObject(const wxMetafile& metafile) 118 : wxDataObjectSimple(wxDF_METAFILE), m_metafile(metafile) { } 119 120 // virtual functions which you may override if you want to provide data on 121 // demand only - otherwise, the trivial default versions will be used 122 virtual void SetMetafile(const wxMetafile& metafile) 123 { m_metafile = metafile; } 124 virtual wxMetafile GetMetafile() const 125 { return m_metafile; } 126 127 // implement base class pure virtuals 128 virtual size_t GetDataSize() const; 129 virtual bool GetDataHere(void *buf) const; 130 virtual bool SetData(size_t len, const void *buf); 131 132 virtual size_t GetDataSize(const wxDataFormat& WXUNUSED(format)) const 133 { return GetDataSize(); } 134 virtual bool GetDataHere(const wxDataFormat& WXUNUSED(format), 135 void *buf) const 136 { return GetDataHere(buf); } 137 virtual bool SetData(const wxDataFormat& WXUNUSED(format), 138 size_t len, const void *buf) 139 { return SetData(len, buf); } 140protected: 141 wxMetafile m_metafile; 142}; 143#endif 144 145#endif 146 // _WX_METAFIILE_H_ 147