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1 | ///////////////////////////////////////////////////////////////////////////// | |
2 | // Name: metafile.cpp | |
3 | // Purpose: wxMetaFile, wxMetaFileDC etc. These classes are optional. | |
4 | // Author: AUTHOR | |
5 | // Modified by: | |
6 | // Created: 04/01/98 | |
7 | // RCS-ID: $Id$ | |
8 | // Copyright: (c) AUTHOR | |
9 | // Licence: wxWindows licence | |
10 | ///////////////////////////////////////////////////////////////////////////// | |
11 | ||
12 | #ifdef __GNUG__ | |
13 | #pragma implementation "metafile.h" | |
14 | #endif | |
15 | ||
16 | #include "wx/object.h" | |
17 | #include "wx/string.h" | |
18 | #include "wx/dc.h" | |
19 | #include "wx/stubs/metafile.h" | |
20 | #include "wx/clipbrd.h" | |
21 | ||
22 | extern bool wxClipboardIsOpen; | |
23 | ||
24 | #if !USE_SHARED_LIBRARY | |
25 | IMPLEMENT_DYNAMIC_CLASS(wxMetaFile, wxObject) | |
26 | IMPLEMENT_ABSTRACT_CLASS(wxMetaFileDC, wxDC) | |
27 | #endif | |
28 | ||
29 | wxMetaFile::wxMetaFile(const wxString& file) | |
30 | { | |
31 | // TODO | |
32 | } | |
33 | ||
34 | wxMetaFile::~wxMetaFile() | |
35 | { | |
36 | // TODO | |
37 | } | |
38 | ||
39 | bool wxMetaFile::SetClipboard(int width, int height) | |
40 | { | |
41 | bool alreadyOpen=wxClipboardOpen(); | |
42 | if (!alreadyOpen) | |
43 | { | |
44 | wxOpenClipboard(); | |
45 | if (!wxEmptyClipboard()) return FALSE; | |
46 | } | |
47 | bool success = wxSetClipboardData(wxDF_METAFILE,this, width,height); | |
48 | if (!alreadyOpen) wxCloseClipboard(); | |
49 | return (bool) success; | |
50 | } | |
51 | ||
52 | bool wxMetaFile::Play(wxDC *dc) | |
53 | { | |
54 | // TODO | |
55 | return false; | |
56 | } | |
57 | ||
58 | /* | |
59 | * Metafile device context | |
60 | * | |
61 | */ | |
62 | ||
63 | // Original constructor that does not takes origin and extent. If you use this, | |
64 | // *DO* give origin/extent arguments to wxMakeMetaFilePlaceable. | |
65 | wxMetaFileDC::wxMetaFileDC(const wxString& file) | |
66 | { | |
67 | // TODO | |
68 | } | |
69 | ||
70 | // New constructor that takes origin and extent. If you use this, don't | |
71 | // give origin/extent arguments to wxMakeMetaFilePlaceable. | |
72 | wxMetaFileDC::wxMetaFileDC(const wxString& file, int xext, int yext, int xorg, int yorg) | |
73 | { | |
74 | // TODO | |
75 | } | |
76 | ||
77 | wxMetaFileDC::~wxMetaFileDC() | |
78 | { | |
79 | } | |
80 | ||
81 | void wxMetaFileDC::GetTextExtent(const wxString& string, float *x, float *y, | |
82 | float *descent, float *externalLeading, wxFont *theFont, bool use16bit) | |
83 | { | |
84 | // TODO | |
85 | } | |
86 | ||
87 | wxMetaFile *wxMetaFileDC::Close() | |
88 | { | |
89 | // TODO | |
90 | return NULL; | |
91 | } | |
92 | ||
93 | void wxMetaFileDC::SetMapMode(int mode) | |
94 | { | |
95 | // TODO | |
96 | } | |
97 | ||
98 | #if 0 | |
99 | ||
100 | #ifdef __WIN32__ | |
101 | struct RECT32 | |
102 | { | |
103 | short left; | |
104 | short top; | |
105 | short right; | |
106 | short bottom; | |
107 | }; | |
108 | ||
109 | struct mfPLACEABLEHEADER { | |
110 | DWORD key; | |
111 | short hmf; | |
112 | RECT32 bbox; | |
113 | WORD inch; | |
114 | DWORD reserved; | |
115 | WORD checksum; | |
116 | }; | |
117 | #else | |
118 | struct mfPLACEABLEHEADER { | |
119 | DWORD key; | |
120 | HANDLE hmf; | |
121 | RECT bbox; | |
122 | WORD inch; | |
123 | DWORD reserved; | |
124 | WORD checksum; | |
125 | }; | |
126 | #endif | |
127 | ||
128 | /* | |
129 | * Pass filename of existing non-placeable metafile, and bounding box. | |
130 | * Adds a placeable metafile header, sets the mapping mode to anisotropic, | |
131 | * and sets the window origin and extent to mimic the MM_TEXT mapping mode. | |
132 | * | |
133 | */ | |
134 | ||
135 | bool wxMakeMetaFilePlaceable(const wxString& filename, float scale) | |
136 | { | |
137 | return wxMakeMetaFilePlaceable(filename, 0, 0, 0, 0, scale, FALSE); | |
138 | } | |
139 | ||
140 | bool wxMakeMetaFilePlaceable(const wxString& filename, int x1, int y1, int x2, int y2, float scale, bool useOriginAndExtent) | |
141 | { | |
142 | // I'm not sure if this is the correct way of suggesting a scale | |
143 | // to the client application, but it's the only way I can find. | |
144 | int unitsPerInch = (int)(576/scale); | |
145 | ||
146 | mfPLACEABLEHEADER header; | |
147 | header.key = 0x9AC6CDD7L; | |
148 | header.hmf = 0; | |
149 | header.bbox.left = (int)(x1); | |
150 | header.bbox.top = (int)(y1); | |
151 | header.bbox.right = (int)(x2); | |
152 | header.bbox.bottom = (int)(y2); | |
153 | header.inch = unitsPerInch; | |
154 | header.reserved = 0; | |
155 | ||
156 | // Calculate checksum | |
157 | WORD *p; | |
158 | mfPLACEABLEHEADER *pMFHead = &header; | |
159 | for (p =(WORD *)pMFHead,pMFHead -> checksum = 0; | |
160 | p < (WORD *)&pMFHead ->checksum; ++p) | |
161 | pMFHead ->checksum ^= *p; | |
162 | ||
163 | FILE *fd = fopen((char *)(const char *)filename, "rb"); | |
164 | if (!fd) return FALSE; | |
165 | ||
166 | char tempFileBuf[256]; | |
167 | wxGetTempFileName("mf", tempFileBuf); | |
168 | FILE *fHandle = fopen(tempFileBuf, "wb"); | |
169 | if (!fHandle) | |
170 | return FALSE; | |
171 | fwrite((void *)&header, sizeof(unsigned char), sizeof(mfPLACEABLEHEADER), fHandle); | |
172 | ||
173 | // Calculate origin and extent | |
174 | int originX = x1; | |
175 | int originY = y1; | |
176 | int extentX = x2 - x1; | |
177 | int extentY = (y2 - y1); | |
178 | ||
179 | // Read metafile header and write | |
180 | METAHEADER metaHeader; | |
181 | fread((void *)&metaHeader, sizeof(unsigned char), sizeof(metaHeader), fd); | |
182 | ||
183 | if (useOriginAndExtent) | |
184 | metaHeader.mtSize += 15; | |
185 | else | |
186 | metaHeader.mtSize += 5; | |
187 | ||
188 | fwrite((void *)&metaHeader, sizeof(unsigned char), sizeof(metaHeader), fHandle); | |
189 | ||
190 | // Write SetMapMode, SetWindowOrigin and SetWindowExt records | |
191 | char modeBuffer[8]; | |
192 | char originBuffer[10]; | |
193 | char extentBuffer[10]; | |
194 | METARECORD *modeRecord = (METARECORD *)&modeBuffer; | |
195 | ||
196 | METARECORD *originRecord = (METARECORD *)&originBuffer; | |
197 | METARECORD *extentRecord = (METARECORD *)&extentBuffer; | |
198 | ||
199 | modeRecord->rdSize = 4; | |
200 | modeRecord->rdFunction = META_SETMAPMODE; | |
201 | modeRecord->rdParm[0] = MM_ANISOTROPIC; | |
202 | ||
203 | originRecord->rdSize = 5; | |
204 | originRecord->rdFunction = META_SETWINDOWORG; | |
205 | originRecord->rdParm[0] = originY; | |
206 | originRecord->rdParm[1] = originX; | |
207 | ||
208 | extentRecord->rdSize = 5; | |
209 | extentRecord->rdFunction = META_SETWINDOWEXT; | |
210 | extentRecord->rdParm[0] = extentY; | |
211 | extentRecord->rdParm[1] = extentX; | |
212 | ||
213 | fwrite((void *)modeBuffer, sizeof(char), 8, fHandle); | |
214 | ||
215 | if (useOriginAndExtent) | |
216 | { | |
217 | fwrite((void *)originBuffer, sizeof(char), 10, fHandle); | |
218 | fwrite((void *)extentBuffer, sizeof(char), 10, fHandle); | |
219 | } | |
220 | ||
221 | int ch = -2; | |
222 | while (ch != EOF) | |
223 | { | |
224 | ch = getc(fd); | |
225 | if (ch != EOF) | |
226 | { | |
227 | putc(ch, fHandle); | |
228 | } | |
229 | } | |
230 | fclose(fHandle); | |
231 | fclose(fd); | |
232 | wxRemoveFile(filename); | |
233 | wxCopyFile(tempFileBuf, filename); | |
234 | wxRemoveFile(tempFileBuf); | |
235 | return TRUE; | |
236 | } | |
237 | ||
238 | #endif | |
239 |