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Refactor owner-drawing code.
[wxWidgets.git] / include / wx / msw / metafile.h
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2bda0e17 1/////////////////////////////////////////////////////////////////////////////
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2// Name: wx/msw/metafile.h
3// Purpose: wxMetaFile, wxMetaFileDC and wxMetaFileDataObject classes
2bda0e17 4// Author: Julian Smart
265b0c07 5// Modified by: VZ 07.01.00: implemented wxMetaFileDataObject
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6// Created: 01/02/97
7// RCS-ID: $Id$
bbcdf8bc 8// Copyright: (c) Julian Smart
65571936 9// Licence: wxWindows licence
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10/////////////////////////////////////////////////////////////////////////////
11
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12#ifndef _WX_METAFIILE_H_
13#define _WX_METAFIILE_H_
2bda0e17 14
2bda0e17 15#include "wx/dc.h"
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16#include "wx/gdiobj.h"
17
18#if wxUSE_DRAG_AND_DROP
265b0c07 19 #include "wx/dataobj.h"
06e43511 20#endif
2bda0e17 21
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22// ----------------------------------------------------------------------------
23// Metafile and metafile device context classes
24// ----------------------------------------------------------------------------
06e43511 25
b5dbe15d 26class WXDLLIMPEXP_FWD_CORE wxMetafile;
06e43511 27
53a2db12 28class WXDLLIMPEXP_CORE wxMetafileRefData: public wxGDIRefData
2bda0e17 29{
06e43511 30public:
265b0c07 31 wxMetafileRefData();
d3c7fc99 32 virtual ~wxMetafileRefData();
06e43511 33
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34 virtual bool IsOk() const { return m_metafile != 0; }
35
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36public:
37 WXHANDLE m_metafile;
38 int m_windowsMappingMode;
265b0c07 39 int m_width, m_height;
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40
41 friend class WXDLLIMPEXP_FWD_CORE wxMetafile;
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42};
43
44#define M_METAFILEDATA ((wxMetafileRefData *)m_refData)
45
53a2db12 46class WXDLLIMPEXP_CORE wxMetafile: public wxGDIObject
06e43511 47{
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48public:
49 wxMetafile(const wxString& file = wxEmptyString);
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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);
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57
58 // set/get the size of metafile for clipboard operations
d9317fd4 59 wxSize GetSize() const { return wxSize(GetWidth(), GetHeight()); }
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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
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72protected:
73 virtual wxGDIRefData *CreateGDIRefData() const;
74 virtual wxGDIRefData *CloneGDIRefData(const wxGDIRefData *data) const;
75
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76private:
77 DECLARE_DYNAMIC_CLASS(wxMetafile)
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78};
79
53a2db12 80class WXDLLIMPEXP_CORE wxMetafileDCImpl: public wxMSWDCImpl
2bda0e17 81{
265b0c07 82public:
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83 wxMetafileDCImpl(wxDC *owner, const wxString& file = wxEmptyString);
84 wxMetafileDCImpl(wxDC *owner, const wxString& file,
85 int xext, int yext, int xorg, int yorg);
888dde65 86 virtual ~wxMetafileDCImpl();
2bda0e17 87
265b0c07 88 virtual wxMetafile *Close();
89efaf2b 89 virtual void SetMapMode(wxMappingMode mode);
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90 virtual void DoGetTextExtent(const wxString& string,
91 wxCoord *x, wxCoord *y,
92 wxCoord *descent = NULL,
93 wxCoord *externalLeading = NULL,
94 const wxFont *theFont = NULL) const;
2bda0e17 95
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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; }
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101
102protected:
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103 virtual void DoGetSize(int *width, int *height) const;
104
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105 int m_windowsMappingMode;
106 wxMetafile* m_metaFile;
107
108private:
888dde65 109 DECLARE_CLASS(wxMetafileDCImpl)
c0c133e1 110 wxDECLARE_NO_COPY_CLASS(wxMetafileDCImpl);
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111};
112
53a2db12 113class WXDLLIMPEXP_CORE wxMetafileDC: public wxDC
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114{
115public:
116 // Don't supply origin and extent
117 // Supply them to wxMakeMetaFilePlaceable instead.
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118 wxMetafileDC(const wxString& file)
119 : wxDC(new wxMetafileDCImpl( this, file ))
120 { }
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121
122 // Supply origin and extent (recommended).
123 // Then don't need to supply them to wxMakeMetaFilePlaceable.
124 wxMetafileDC(const wxString& file, int xext, int yext, int xorg, int yorg)
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125 : wxDC(new wxMetafileDCImpl( this, file, xext, yext, xorg, yorg ))
126 { }
888dde65 127
89efaf2b 128 wxMetafile *GetMetafile() const
888dde65 129 { return ((wxMetafileDCImpl*)m_pimpl)->GetMetaFile(); }
89efaf2b 130
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131 wxMetafile *Close()
132 { return ((wxMetafileDCImpl*)m_pimpl)->Close(); }
133
134private:
135 DECLARE_CLASS(wxMetafileDC)
c0c133e1 136 wxDECLARE_NO_COPY_CLASS(wxMetafileDC);
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137};
138
139
140
141
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142/*
143 * Pass filename of existing non-placeable metafile, and bounding box.
144 * Adds a placeable metafile header, sets the mapping mode to anisotropic,
e3065973 145 * and sets the window origin and extent to mimic the wxMM_TEXT mapping mode.
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146 *
147 */
148
149// No origin or extent
53a2db12 150bool WXDLLIMPEXP_CORE wxMakeMetafilePlaceable(const wxString& filename, float scale = 1.0);
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151
152// Optional origin and extent
53a2db12 153bool WXDLLIMPEXP_CORE wxMakeMetaFilePlaceable(const wxString& filename, int x1, int y1, int x2, int y2, float scale = 1.0, bool useOriginAndExtent = true);
2bda0e17 154
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155// ----------------------------------------------------------------------------
156// wxMetafileDataObject is a specialization of wxDataObject for metafile data
157// ----------------------------------------------------------------------------
158
06e43511 159#if wxUSE_DRAG_AND_DROP
265b0c07 160
53a2db12 161class WXDLLIMPEXP_CORE wxMetafileDataObject : public wxDataObjectSimple
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162{
163public:
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164 // ctors
165 wxMetafileDataObject() : wxDataObjectSimple(wxDF_METAFILE)
166 { }
167 wxMetafileDataObject(const wxMetafile& metafile)
168 : wxDataObjectSimple(wxDF_METAFILE), m_metafile(metafile) { }
169
170 // virtual functions which you may override if you want to provide data on
171 // demand only - otherwise, the trivial default versions will be used
172 virtual void SetMetafile(const wxMetafile& metafile)
173 { m_metafile = metafile; }
174 virtual wxMetafile GetMetafile() const
175 { return m_metafile; }
176
177 // implement base class pure virtuals
178 virtual size_t GetDataSize() const;
179 virtual bool GetDataHere(void *buf) const;
180 virtual bool SetData(size_t len, const void *buf);
06e43511 181
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182protected:
183 wxMetafile m_metafile;
06e43511 184};
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185
186#endif // wxUSE_DRAG_AND_DROP
06e43511 187
2bda0e17 188#endif
bbcdf8bc 189 // _WX_METAFIILE_H_
2845ddc2 190