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Implement GetPageText for the OSX WebKit implementation.
[wxWidgets.git] / include / wx / palmos / metafile.h
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 WXDLLIMPEXP_FWD_CORE wxMetafile;
27
28 class WXDLLIMPEXP_CORE wxMetafileRefData: public wxGDIRefData
29 {
30 public:
31 wxMetafileRefData();
32 virtual ~wxMetafileRefData();
33
34 virtual bool IsOk() const { return m_metafile != 0; }
35
36 public:
37 WXHANDLE m_metafile;
38 int m_windowsMappingMode;
39 int m_width, m_height;
40
41 friend class WXDLLIMPEXP_FWD_CORE wxMetafile;
42 };
43
44 #define M_METAFILEDATA ((wxMetafileRefData *)m_refData)
45
46 class WXDLLIMPEXP_CORE wxMetafile: public wxGDIObject
47 {
48 public:
49 wxMetafile(const wxString& file = wxEmptyString);
50 virtual ~wxMetafile();
51
52 // After this is called, the metafile cannot be used for anything
53 // since it is now owned by the clipboard.
54 virtual bool SetClipboard(int width = 0, int height = 0);
55
56 virtual bool Play(wxDC *dc);
57
58 // set/get the size of metafile for clipboard operations
59 wxSize GetSize() const { return wxSize(GetWidth(), GetHeight()); }
60 int GetWidth() const { return M_METAFILEDATA->m_width; }
61 int GetHeight() const { return M_METAFILEDATA->m_height; }
62
63 void SetWidth(int width) { M_METAFILEDATA->m_width = width; }
64 void SetHeight(int height) { M_METAFILEDATA->m_height = height; }
65
66 // Implementation
67 WXHANDLE GetHMETAFILE() const { return M_METAFILEDATA->m_metafile; }
68 void SetHMETAFILE(WXHANDLE mf) ;
69 int GetWindowsMappingMode() const { return M_METAFILEDATA->m_windowsMappingMode; }
70 void SetWindowsMappingMode(int mm);
71
72 private:
73 DECLARE_DYNAMIC_CLASS(wxMetafile)
74 };
75
76 class WXDLLIMPEXP_CORE wxMetafileDC: public wxDC
77 {
78 public:
79 // Don't supply origin and extent
80 // Supply them to wxMakeMetaFilePlaceable instead.
81 wxMetafileDC(const wxString& file = wxEmptyString);
82
83 // Supply origin and extent (recommended).
84 // Then don't need to supply them to wxMakeMetaFilePlaceable.
85 wxMetafileDC(const wxString& file, int xext, int yext, int xorg, int yorg);
86
87 virtual ~wxMetafileDC();
88
89 // Should be called at end of drawing
90 virtual wxMetafile *Close();
91 virtual void SetMapMode(wxMappingMode mode);
92 virtual void GetTextExtent(const wxString& string, long *x, long *y,
93 long *descent = NULL, long *externalLeading = NULL,
94 const wxFont *theFont = NULL, bool use16bit = FALSE) const;
95
96 // Implementation
97 wxMetafile *GetMetaFile() const { return m_metaFile; }
98 void SetMetaFile(wxMetafile *mf) { m_metaFile = mf; }
99 int GetWindowsMappingMode() const { return m_windowsMappingMode; }
100 void SetWindowsMappingMode(int mm) { m_windowsMappingMode = mm; }
101
102 protected:
103 int m_windowsMappingMode;
104 wxMetafile* m_metaFile;
105
106 private:
107 DECLARE_DYNAMIC_CLASS(wxMetafileDC)
108 };
109
110 /*
111 * Pass filename of existing non-placeable metafile, and bounding box.
112 * Adds a placeable metafile header, sets the mapping mode to anisotropic,
113 * and sets the window origin and extent to mimic the wxMM_TEXT mapping mode.
114 *
115 */
116
117 // No origin or extent
118 bool WXDLLIMPEXP_CORE wxMakeMetafilePlaceable(const wxString& filename, float scale = 1.0);
119
120 // Optional origin and extent
121 bool WXDLLIMPEXP_CORE wxMakeMetaFilePlaceable(const wxString& filename, int x1, int y1, int x2, int y2, float scale = 1.0, bool useOriginAndExtent = TRUE);
122
123 // ----------------------------------------------------------------------------
124 // wxMetafileDataObject is a specialization of wxDataObject for metafile data
125 // ----------------------------------------------------------------------------
126
127 #if wxUSE_DRAG_AND_DROP
128
129 class WXDLLIMPEXP_CORE wxMetafileDataObject : public wxDataObjectSimple
130 {
131 public:
132 // ctors
133 wxMetafileDataObject() : wxDataObjectSimple(wxDF_METAFILE)
134 { }
135 wxMetafileDataObject(const wxMetafile& metafile)
136 : wxDataObjectSimple(wxDF_METAFILE), m_metafile(metafile) { }
137
138 // virtual functions which you may override if you want to provide data on
139 // demand only - otherwise, the trivial default versions will be used
140 virtual void SetMetafile(const wxMetafile& metafile)
141 { m_metafile = metafile; }
142 virtual wxMetafile GetMetafile() const
143 { return m_metafile; }
144
145 // implement base class pure virtuals
146 virtual size_t GetDataSize() const;
147 virtual bool GetDataHere(void *buf) const;
148 virtual bool SetData(size_t len, const void *buf);
149
150 protected:
151 wxMetafile m_metafile;
152 };
153
154 #endif // wxUSE_DRAG_AND_DROP
155
156 #endif
157 // _WX_METAFIILE_H_
158