| 1 | ///////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: wx/palmos/metafile.h |
| 3 | // Purpose: wxMetaFile, wxMetaFileDC and wxMetaFileDataObject classes |
| 4 | // Author: William Osborne - minimal working wxPalmOS port |
| 5 | // Modified by: |
| 6 | // Created: 10/13/04 |
| 7 | // RCS-ID: $Id$ |
| 8 | // Copyright: (c) William Osborne |
| 9 | // Licence: wxWindows licence |
| 10 | ///////////////////////////////////////////////////////////////////////////// |
| 11 | |
| 12 | #ifndef _WX_METAFIILE_H_ |
| 13 | #define _WX_METAFIILE_H_ |
| 14 | |
| 15 | #include "wx/dc.h" |
| 16 | #include "wx/gdiobj.h" |
| 17 | |
| 18 | #if wxUSE_DRAG_AND_DROP |
| 19 | #include "wx/dataobj.h" |
| 20 | #endif |
| 21 | |
| 22 | // ---------------------------------------------------------------------------- |
| 23 | // Metafile and metafile device context classes |
| 24 | // ---------------------------------------------------------------------------- |
| 25 | |
| 26 | class WXDLLEXPORT wxMetafile; |
| 27 | |
| 28 | class WXDLLEXPORT wxMetafileRefData: public wxGDIRefData |
| 29 | { |
| 30 | friend class WXDLLEXPORT wxMetafile; |
| 31 | public: |
| 32 | wxMetafileRefData(); |
| 33 | virtual ~wxMetafileRefData(); |
| 34 | |
| 35 | public: |
| 36 | WXHANDLE m_metafile; |
| 37 | int m_windowsMappingMode; |
| 38 | int m_width, m_height; |
| 39 | }; |
| 40 | |
| 41 | #define M_METAFILEDATA ((wxMetafileRefData *)m_refData) |
| 42 | |
| 43 | class WXDLLEXPORT wxMetafile: public wxGDIObject |
| 44 | { |
| 45 | public: |
| 46 | wxMetafile(const wxString& file = wxEmptyString); |
| 47 | virtual ~wxMetafile(); |
| 48 | |
| 49 | // After this is called, the metafile cannot be used for anything |
| 50 | // since it is now owned by the clipboard. |
| 51 | virtual bool SetClipboard(int width = 0, int height = 0); |
| 52 | |
| 53 | virtual bool Play(wxDC *dc); |
| 54 | bool Ok() const { return IsOk(); } |
| 55 | bool IsOk() const { return (M_METAFILEDATA && (M_METAFILEDATA->m_metafile != 0)); }; |
| 56 | |
| 57 | // set/get the size of metafile for clipboard operations |
| 58 | wxSize GetSize() const { return wxSize(GetWidth(), GetHeight()); } |
| 59 | int GetWidth() const { return M_METAFILEDATA->m_width; } |
| 60 | int GetHeight() const { return M_METAFILEDATA->m_height; } |
| 61 | |
| 62 | void SetWidth(int width) { M_METAFILEDATA->m_width = width; } |
| 63 | void SetHeight(int height) { M_METAFILEDATA->m_height = height; } |
| 64 | |
| 65 | // Implementation |
| 66 | WXHANDLE GetHMETAFILE() const { return M_METAFILEDATA->m_metafile; } |
| 67 | void SetHMETAFILE(WXHANDLE mf) ; |
| 68 | int GetWindowsMappingMode() const { return M_METAFILEDATA->m_windowsMappingMode; } |
| 69 | void SetWindowsMappingMode(int mm); |
| 70 | |
| 71 | // Operators |
| 72 | bool operator==(const wxMetafile& metafile) const |
| 73 | { return m_refData == metafile.m_refData; } |
| 74 | bool operator!=(const wxMetafile& metafile) const |
| 75 | { return m_refData != metafile.m_refData; } |
| 76 | |
| 77 | private: |
| 78 | DECLARE_DYNAMIC_CLASS(wxMetafile) |
| 79 | }; |
| 80 | |
| 81 | class WXDLLEXPORT wxMetafileDC: public wxDC |
| 82 | { |
| 83 | public: |
| 84 | // Don't supply origin and extent |
| 85 | // Supply them to wxMakeMetaFilePlaceable instead. |
| 86 | wxMetafileDC(const wxString& file = wxEmptyString); |
| 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 | virtual ~wxMetafileDC(); |
| 93 | |
| 94 | // Should be called at end of drawing |
| 95 | virtual wxMetafile *Close(); |
| 96 | virtual void SetMapMode(int mode); |
| 97 | virtual void GetTextExtent(const wxString& string, long *x, long *y, |
| 98 | long *descent = NULL, long *externalLeading = NULL, |
| 99 | wxFont *theFont = NULL, bool use16bit = FALSE) const; |
| 100 | |
| 101 | // Implementation |
| 102 | wxMetafile *GetMetaFile() const { return m_metaFile; } |
| 103 | void SetMetaFile(wxMetafile *mf) { m_metaFile = mf; } |
| 104 | int GetWindowsMappingMode() const { return m_windowsMappingMode; } |
| 105 | void SetWindowsMappingMode(int mm) { m_windowsMappingMode = mm; } |
| 106 | |
| 107 | protected: |
| 108 | int m_windowsMappingMode; |
| 109 | wxMetafile* m_metaFile; |
| 110 | |
| 111 | private: |
| 112 | DECLARE_DYNAMIC_CLASS(wxMetafileDC) |
| 113 | }; |
| 114 | |
| 115 | /* |
| 116 | * Pass filename of existing non-placeable metafile, and bounding box. |
| 117 | * Adds a placeable metafile header, sets the mapping mode to anisotropic, |
| 118 | * and sets the window origin and extent to mimic the wxMM_TEXT mapping mode. |
| 119 | * |
| 120 | */ |
| 121 | |
| 122 | // No origin or extent |
| 123 | bool WXDLLEXPORT wxMakeMetafilePlaceable(const wxString& filename, float scale = 1.0); |
| 124 | |
| 125 | // Optional origin and extent |
| 126 | bool WXDLLEXPORT wxMakeMetaFilePlaceable(const wxString& filename, int x1, int y1, int x2, int y2, float scale = 1.0, bool useOriginAndExtent = TRUE); |
| 127 | |
| 128 | // ---------------------------------------------------------------------------- |
| 129 | // wxMetafileDataObject is a specialization of wxDataObject for metafile data |
| 130 | // ---------------------------------------------------------------------------- |
| 131 | |
| 132 | #if wxUSE_DRAG_AND_DROP |
| 133 | |
| 134 | class WXDLLEXPORT wxMetafileDataObject : public wxDataObjectSimple |
| 135 | { |
| 136 | public: |
| 137 | // ctors |
| 138 | wxMetafileDataObject() : wxDataObjectSimple(wxDF_METAFILE) |
| 139 | { } |
| 140 | wxMetafileDataObject(const wxMetafile& metafile) |
| 141 | : wxDataObjectSimple(wxDF_METAFILE), m_metafile(metafile) { } |
| 142 | |
| 143 | // virtual functions which you may override if you want to provide data on |
| 144 | // demand only - otherwise, the trivial default versions will be used |
| 145 | virtual void SetMetafile(const wxMetafile& metafile) |
| 146 | { m_metafile = metafile; } |
| 147 | virtual wxMetafile GetMetafile() const |
| 148 | { return m_metafile; } |
| 149 | |
| 150 | // implement base class pure virtuals |
| 151 | virtual size_t GetDataSize() const; |
| 152 | virtual bool GetDataHere(void *buf) const; |
| 153 | virtual bool SetData(size_t len, const void *buf); |
| 154 | |
| 155 | protected: |
| 156 | wxMetafile m_metafile; |
| 157 | }; |
| 158 | |
| 159 | #endif // wxUSE_DRAG_AND_DROP |
| 160 | |
| 161 | #endif |
| 162 | // _WX_METAFIILE_H_ |
| 163 | |