| 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: AUTHOR |
| 7 | // Modified by: |
| 8 | // Created: ??/??/98 |
| 9 | // RCS-ID: $Id$ |
| 10 | // Copyright: (c) AUTHOR |
| 11 | // Licence: wxWindows licence |
| 12 | ///////////////////////////////////////////////////////////////////////////// |
| 13 | |
| 14 | |
| 15 | #ifndef _WX_METAFIILE_H_ |
| 16 | #define _WX_METAFIILE_H_ |
| 17 | |
| 18 | #if wxUSE_METAFILE |
| 19 | #include "wx/dc.h" |
| 20 | #include "wx/gdiobj.h" |
| 21 | |
| 22 | #if wxUSE_DRAG_AND_DROP |
| 23 | #include "wx/dataobj.h" wx/defs.h |
| 24 | #endif |
| 25 | |
| 26 | /* |
| 27 | * Metafile and metafile device context classes |
| 28 | * |
| 29 | */ |
| 30 | |
| 31 | #define wxMetaFile wxMetafile |
| 32 | #define wxMetaFileDC wxMetafileDC |
| 33 | |
| 34 | class WXDLLEXPORT wxMetafile; |
| 35 | |
| 36 | class WXDLLEXPORT wxMetafileRefData: public wxGDIRefData |
| 37 | { |
| 38 | friend class WXDLLEXPORT wxMetafile; |
| 39 | public: |
| 40 | wxMetafileRefData(void); |
| 41 | ~wxMetafileRefData(void); |
| 42 | |
| 43 | public: |
| 44 | PicHandle m_metafile; |
| 45 | }; |
| 46 | |
| 47 | #define M_METAFILEDATA ((wxMetafileRefData *)m_refData) |
| 48 | |
| 49 | class WXDLLEXPORT wxMetafile: public wxGDIObject |
| 50 | { |
| 51 | DECLARE_DYNAMIC_CLASS(wxMetafile) |
| 52 | public: |
| 53 | // Copy constructor |
| 54 | inline wxMetafile(const wxMetafile& metafile) |
| 55 | { Ref(metafile); } |
| 56 | |
| 57 | wxMetafile(const wxString& file = ""); |
| 58 | ~wxMetafile(void); |
| 59 | |
| 60 | // After this is called, the metafile cannot be used for anything |
| 61 | // since it is now owned by the clipboard. |
| 62 | virtual bool SetClipboard(int width = 0, int height = 0); |
| 63 | |
| 64 | virtual bool Play(wxDC *dc); |
| 65 | inline bool Ok(void) const { return (M_METAFILEDATA && (M_METAFILEDATA->m_metafile != 0)); }; |
| 66 | |
| 67 | // Implementation |
| 68 | inline PicHandle GetHMETAFILE(void) { return M_METAFILEDATA->m_metafile; } |
| 69 | void SetHMETAFILE(PicHandle mf) ; |
| 70 | |
| 71 | // Operators |
| 72 | inline wxMetafile& operator = (const wxMetafile& metafile) { if (*this == metafile) return (*this); Ref(metafile); return *this; } |
| 73 | inline bool operator == (const wxMetafile& metafile) { return m_refData == metafile.m_refData; } |
| 74 | inline bool operator != (const wxMetafile& metafile) { return m_refData != metafile.m_refData; } |
| 75 | |
| 76 | protected: |
| 77 | }; |
| 78 | |
| 79 | class WXDLLEXPORT wxMetafileDC: public wxDC |
| 80 | { |
| 81 | DECLARE_DYNAMIC_CLASS(wxMetafileDC) |
| 82 | |
| 83 | public: |
| 84 | // Don't supply origin and extent |
| 85 | // Supply them to wxMakeMetaFilePlaceable instead. |
| 86 | wxMetafileDC(const wxString& file = ""); |
| 87 | |
| 88 | // Supply origin and extent (recommended). |
| 89 | // Then don't need to supply them to wxMakeMetaFilePlaceable. |
| 90 | wxMetafileDC(const wxString& file, int xext, int yext, int xorg, int yorg); |
| 91 | |
| 92 | ~wxMetafileDC(void); |
| 93 | |
| 94 | // Should be called at end of drawing |
| 95 | virtual wxMetafile *Close(void); |
| 96 | |
| 97 | // Implementation |
| 98 | inline wxMetafile *GetMetaFile(void) const { return m_metaFile; } |
| 99 | inline void SetMetaFile(wxMetafile *mf) { m_metaFile = mf; } |
| 100 | |
| 101 | protected: |
| 102 | wxMetafile* m_metaFile; |
| 103 | }; |
| 104 | |
| 105 | /* |
| 106 | * Pass filename of existing non-placeable metafile, and bounding box. |
| 107 | * Adds a placeable metafile header, sets the mapping mode to anisotropic, |
| 108 | * and sets the window origin and extent to mimic the wxMM_TEXT mapping mode. |
| 109 | * |
| 110 | */ |
| 111 | |
| 112 | // No origin or extent |
| 113 | #define wxMakeMetaFilePlaceable wxMakeMetafilePlaceable |
| 114 | bool WXDLLEXPORT wxMakeMetafilePlaceable(const wxString& filename, float scale = 1.0); |
| 115 | |
| 116 | // Optional origin and extent |
| 117 | bool WXDLLEXPORT wxMakeMetaFilePlaceable(const wxString& filename, int x1, int y1, int x2, int y2, float scale = 1.0, bool useOriginAndExtent = TRUE); |
| 118 | |
| 119 | // ---------------------------------------------------------------------------- |
| 120 | // wxMetafileDataObject is a specialization of wxDataObject for metafile data |
| 121 | // ---------------------------------------------------------------------------- |
| 122 | |
| 123 | // TODO: implement OLE side of things. At present, it's just for clipboard |
| 124 | // use. |
| 125 | |
| 126 | #if wxUSE_DRAG_AND_DROP |
| 127 | class WXDLLEXPORT wxMetafileDataObject : public wxDataObject |
| 128 | { |
| 129 | public: |
| 130 | // ctors |
| 131 | wxMetafileDataObject() { m_width = 0; m_height = 0; }; |
| 132 | wxMetafileDataObject(const wxMetafile& metafile, int width = 0, int height = 0): |
| 133 | m_metafile(metafile), m_width(width), m_height(height) { } |
| 134 | |
| 135 | void SetMetafile(const wxMetafile& metafile, int w = 0, int h = 0) |
| 136 | { m_metafile = metafile; m_width = w; m_height = h; } |
| 137 | wxMetafile GetMetafile() const { return m_metafile; } |
| 138 | int GetWidth() const { return m_width; } |
| 139 | int GetHeight() const { return m_height; } |
| 140 | |
| 141 | virtual wxDataFormat GetFormat() const { return wxDF_METAFILE; } |
| 142 | |
| 143 | /* ?? |
| 144 | // implement base class pure virtuals |
| 145 | virtual wxDataFormat GetPreferredFormat() const |
| 146 | { return (wxDataFormat) wxDataObject::Text; } |
| 147 | virtual bool IsSupportedFormat(wxDataFormat format) const |
| 148 | { return format == wxDataObject::Text || format == wxDataObject::Locale; } |
| 149 | virtual size_t GetDataSize() const |
| 150 | { return m_strText.Len() + 1; } // +1 for trailing '\0'of course |
| 151 | virtual void GetDataHere(void *pBuf) const |
| 152 | { memcpy(pBuf, m_strText.c_str(), GetDataSize()); } |
| 153 | */ |
| 154 | |
| 155 | private: |
| 156 | wxMetafile m_metafile; |
| 157 | int m_width; |
| 158 | int m_height; |
| 159 | }; |
| 160 | #endif |
| 161 | |
| 162 | #endif // wxUSE_METAFILE |
| 163 | |
| 164 | |
| 165 | #endif |
| 166 | // _WX_METAFIILE_H_ |