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1 | ///////////////////////////////////////////////////////////////////////////// | |
2 | // Name: wx/palmos/metafile.h | |
3 | // Purpose: wxMetaFile, wxMetaFileDC and wxMetaFileDataObject classes | |
4 | // Author: William Osborne | |
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 | #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) | |
16 | #pragma interface "metafile.h" | |
17 | #endif | |
18 | ||
19 | #include "wx/setup.h" | |
20 | ||
21 | #if wxUSE_METAFILE | |
22 | ||
23 | #include "wx/dc.h" | |
24 | #include "wx/gdiobj.h" | |
25 | ||
26 | #if wxUSE_DRAG_AND_DROP | |
27 | #include "wx/dataobj.h" | |
28 | #endif | |
29 | ||
30 | // ---------------------------------------------------------------------------- | |
31 | // Metafile and metafile device context classes | |
32 | // ---------------------------------------------------------------------------- | |
33 | ||
34 | class WXDLLEXPORT wxMetafile; | |
35 | ||
36 | class WXDLLEXPORT wxMetafileRefData: public wxGDIRefData | |
37 | { | |
38 | friend class WXDLLEXPORT wxMetafile; | |
39 | public: | |
40 | wxMetafileRefData(); | |
41 | ~wxMetafileRefData(); | |
42 | ||
43 | public: | |
44 | WXHANDLE m_metafile; | |
45 | int m_windowsMappingMode; | |
46 | int m_width, m_height; | |
47 | }; | |
48 | ||
49 | #define M_METAFILEDATA ((wxMetafileRefData *)m_refData) | |
50 | ||
51 | class WXDLLEXPORT wxMetafile: public wxGDIObject | |
52 | { | |
53 | public: | |
54 | wxMetafile(const wxString& file = wxEmptyString); | |
55 | wxMetafile(const wxMetafile& metafile) { Ref(metafile); } | |
56 | virtual ~wxMetafile(); | |
57 | ||
58 | // After this is called, the metafile cannot be used for anything | |
59 | // since it is now owned by the clipboard. | |
60 | virtual bool SetClipboard(int width = 0, int height = 0); | |
61 | ||
62 | virtual bool Play(wxDC *dc); | |
63 | bool Ok() const { return (M_METAFILEDATA && (M_METAFILEDATA->m_metafile != 0)); }; | |
64 | ||
65 | // set/get the size of metafile for clipboard operations | |
66 | wxSize GetSize() const { return wxSize(GetWidth(), GetHeight()); } | |
67 | int GetWidth() const { return M_METAFILEDATA->m_width; } | |
68 | int GetHeight() const { return M_METAFILEDATA->m_height; } | |
69 | ||
70 | void SetWidth(int width) { M_METAFILEDATA->m_width = width; } | |
71 | void SetHeight(int height) { M_METAFILEDATA->m_height = height; } | |
72 | ||
73 | // Implementation | |
74 | WXHANDLE GetHMETAFILE() const { return M_METAFILEDATA->m_metafile; } | |
75 | void SetHMETAFILE(WXHANDLE mf) ; | |
76 | int GetWindowsMappingMode() const { return M_METAFILEDATA->m_windowsMappingMode; } | |
77 | void SetWindowsMappingMode(int mm); | |
78 | ||
79 | // Operators | |
80 | wxMetafile& operator=(const wxMetafile& metafile) | |
81 | { if (*this != metafile) Ref(metafile); return *this; } | |
82 | bool operator==(const wxMetafile& metafile) const | |
83 | { return m_refData == metafile.m_refData; } | |
84 | bool operator!=(const wxMetafile& metafile) const | |
85 | { return m_refData != metafile.m_refData; } | |
86 | ||
87 | private: | |
88 | DECLARE_DYNAMIC_CLASS(wxMetafile) | |
89 | }; | |
90 | ||
91 | class WXDLLEXPORT wxMetafileDC: public wxDC | |
92 | { | |
93 | public: | |
94 | // Don't supply origin and extent | |
95 | // Supply them to wxMakeMetaFilePlaceable instead. | |
96 | wxMetafileDC(const wxString& file = wxEmptyString); | |
97 | ||
98 | // Supply origin and extent (recommended). | |
99 | // Then don't need to supply them to wxMakeMetaFilePlaceable. | |
100 | wxMetafileDC(const wxString& file, int xext, int yext, int xorg, int yorg); | |
101 | ||
102 | virtual ~wxMetafileDC(); | |
103 | ||
104 | // Should be called at end of drawing | |
105 | virtual wxMetafile *Close(); | |
106 | virtual void SetMapMode(int mode); | |
107 | virtual void GetTextExtent(const wxString& string, long *x, long *y, | |
108 | long *descent = NULL, long *externalLeading = NULL, | |
109 | wxFont *theFont = NULL, bool use16bit = FALSE) const; | |
110 | ||
111 | // Implementation | |
112 | wxMetafile *GetMetaFile() const { return m_metaFile; } | |
113 | void SetMetaFile(wxMetafile *mf) { m_metaFile = mf; } | |
114 | int GetWindowsMappingMode() const { return m_windowsMappingMode; } | |
115 | void SetWindowsMappingMode(int mm) { m_windowsMappingMode = mm; } | |
116 | ||
117 | protected: | |
118 | int m_windowsMappingMode; | |
119 | wxMetafile* m_metaFile; | |
120 | ||
121 | private: | |
122 | DECLARE_DYNAMIC_CLASS(wxMetafileDC) | |
123 | }; | |
124 | ||
125 | /* | |
126 | * Pass filename of existing non-placeable metafile, and bounding box. | |
127 | * Adds a placeable metafile header, sets the mapping mode to anisotropic, | |
128 | * and sets the window origin and extent to mimic the wxMM_TEXT mapping mode. | |
129 | * | |
130 | */ | |
131 | ||
132 | // No origin or extent | |
133 | bool WXDLLEXPORT wxMakeMetafilePlaceable(const wxString& filename, float scale = 1.0); | |
134 | ||
135 | // Optional origin and extent | |
136 | bool WXDLLEXPORT 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_DRAG_AND_DROP | |
143 | ||
144 | class WXDLLEXPORT wxMetafileDataObject : public wxDataObjectSimple | |
145 | { | |
146 | public: | |
147 | // ctors | |
148 | wxMetafileDataObject() : wxDataObjectSimple(wxDF_METAFILE) | |
149 | { } | |
150 | wxMetafileDataObject(const wxMetafile& metafile) | |
151 | : wxDataObjectSimple(wxDF_METAFILE), m_metafile(metafile) { } | |
152 | ||
153 | // virtual functions which you may override if you want to provide data on | |
154 | // demand only - otherwise, the trivial default versions will be used | |
155 | virtual void SetMetafile(const wxMetafile& metafile) | |
156 | { m_metafile = metafile; } | |
157 | virtual wxMetafile GetMetafile() const | |
158 | { return m_metafile; } | |
159 | ||
160 | // implement base class pure virtuals | |
161 | virtual size_t GetDataSize() const; | |
162 | virtual bool GetDataHere(void *buf) const; | |
163 | virtual bool SetData(size_t len, const void *buf); | |
164 | ||
165 | protected: | |
166 | wxMetafile m_metafile; | |
167 | }; | |
168 | ||
169 | #endif // wxUSE_DRAG_AND_DROP | |
170 | ||
171 | #endif // wxUSE_METAFILE | |
172 | #endif | |
173 | // _WX_METAFIILE_H_ | |
174 |