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1 | ///////////////////////////////////////////////////////////////////////////// |
2 | // Name: metafile.cpp | |
3 | // Purpose: wxMetaFile, wxMetaFileDC etc. These classes are optional. | |
4 | // Author: Julian Smart | |
5 | // Modified by: | |
6 | // Created: 04/01/98 | |
7 | // RCS-ID: $Id$ | |
8 | // Copyright: (c) Julian Smart | |
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" | |
5dcf05ae | 19 | #include "wx/motif/metafile.h" |
4bb6408c JS |
20 | #include "wx/clipbrd.h" |
21 | ||
22 | extern bool wxClipboardIsOpen; | |
23 | ||
4bb6408c JS |
24 | IMPLEMENT_DYNAMIC_CLASS(wxMetaFile, wxObject) |
25 | IMPLEMENT_ABSTRACT_CLASS(wxMetaFileDC, wxDC) | |
4bb6408c JS |
26 | |
27 | wxMetaFile::wxMetaFile(const wxString& file) | |
28 | { | |
29 | // TODO | |
30 | } | |
31 | ||
32 | wxMetaFile::~wxMetaFile() | |
33 | { | |
34 | // TODO | |
35 | } | |
36 | ||
37 | bool wxMetaFile::SetClipboard(int width, int height) | |
38 | { | |
39 | bool alreadyOpen=wxClipboardOpen(); | |
40 | if (!alreadyOpen) | |
41 | { | |
42 | wxOpenClipboard(); | |
43 | if (!wxEmptyClipboard()) return FALSE; | |
44 | } | |
45 | bool success = wxSetClipboardData(wxDF_METAFILE,this, width,height); | |
46 | if (!alreadyOpen) wxCloseClipboard(); | |
47 | return (bool) success; | |
48 | } | |
49 | ||
50 | bool wxMetaFile::Play(wxDC *dc) | |
51 | { | |
52 | // TODO | |
f60d0f94 | 53 | return FALSE; |
4bb6408c JS |
54 | } |
55 | ||
56 | /* | |
57 | * Metafile device context | |
58 | * | |
59 | */ | |
60 | ||
61 | // Original constructor that does not takes origin and extent. If you use this, | |
62 | // *DO* give origin/extent arguments to wxMakeMetaFilePlaceable. | |
63 | wxMetaFileDC::wxMetaFileDC(const wxString& file) | |
64 | { | |
65 | // TODO | |
66 | } | |
67 | ||
68 | // New constructor that takes origin and extent. If you use this, don't | |
69 | // give origin/extent arguments to wxMakeMetaFilePlaceable. | |
70 | wxMetaFileDC::wxMetaFileDC(const wxString& file, int xext, int yext, int xorg, int yorg) | |
71 | { | |
72 | // TODO | |
73 | } | |
74 | ||
75 | wxMetaFileDC::~wxMetaFileDC() | |
76 | { | |
77 | } | |
78 | ||
79 | void wxMetaFileDC::GetTextExtent(const wxString& string, float *x, float *y, | |
80 | float *descent, float *externalLeading, wxFont *theFont, bool use16bit) | |
81 | { | |
82 | // TODO | |
83 | } | |
84 | ||
85 | wxMetaFile *wxMetaFileDC::Close() | |
86 | { | |
87 | // TODO | |
88 | return NULL; | |
89 | } | |
90 | ||
91 | void wxMetaFileDC::SetMapMode(int mode) | |
92 | { | |
93 | // TODO | |
94 | } | |
95 | ||
96 | #if 0 | |
97 | ||
98 | #ifdef __WIN32__ | |
99 | struct RECT32 | |
100 | { | |
101 | short left; | |
102 | short top; | |
103 | short right; | |
104 | short bottom; | |
105 | }; | |
106 | ||
107 | struct mfPLACEABLEHEADER { | |
108 | DWORD key; | |
109 | short hmf; | |
110 | RECT32 bbox; | |
111 | WORD inch; | |
112 | DWORD reserved; | |
113 | WORD checksum; | |
114 | }; | |
115 | #else | |
116 | struct mfPLACEABLEHEADER { | |
117 | DWORD key; | |
118 | HANDLE hmf; | |
119 | RECT bbox; | |
120 | WORD inch; | |
121 | DWORD reserved; | |
122 | WORD checksum; | |
123 | }; | |
124 | #endif | |
125 | ||
126 | /* | |
127 | * Pass filename of existing non-placeable metafile, and bounding box. | |
128 | * Adds a placeable metafile header, sets the mapping mode to anisotropic, | |
e3065973 | 129 | * and sets the window origin and extent to mimic the wxMM_TEXT mapping mode. |
4bb6408c JS |
130 | * |
131 | */ | |
132 | ||
133 | bool wxMakeMetaFilePlaceable(const wxString& filename, float scale) | |
134 | { | |
135 | return wxMakeMetaFilePlaceable(filename, 0, 0, 0, 0, scale, FALSE); | |
136 | } | |
137 | ||
138 | bool wxMakeMetaFilePlaceable(const wxString& filename, int x1, int y1, int x2, int y2, float scale, bool useOriginAndExtent) | |
139 | { | |
140 | // I'm not sure if this is the correct way of suggesting a scale | |
141 | // to the client application, but it's the only way I can find. | |
142 | int unitsPerInch = (int)(576/scale); | |
143 | ||
144 | mfPLACEABLEHEADER header; | |
145 | header.key = 0x9AC6CDD7L; | |
146 | header.hmf = 0; | |
147 | header.bbox.left = (int)(x1); | |
148 | header.bbox.top = (int)(y1); | |
149 | header.bbox.right = (int)(x2); | |
150 | header.bbox.bottom = (int)(y2); | |
151 | header.inch = unitsPerInch; | |
152 | header.reserved = 0; | |
153 | ||
154 | // Calculate checksum | |
155 | WORD *p; | |
156 | mfPLACEABLEHEADER *pMFHead = &header; | |
157 | for (p =(WORD *)pMFHead,pMFHead -> checksum = 0; | |
158 | p < (WORD *)&pMFHead ->checksum; ++p) | |
159 | pMFHead ->checksum ^= *p; | |
160 | ||
161 | FILE *fd = fopen((char *)(const char *)filename, "rb"); | |
162 | if (!fd) return FALSE; | |
163 | ||
164 | char tempFileBuf[256]; | |
165 | wxGetTempFileName("mf", tempFileBuf); | |
166 | FILE *fHandle = fopen(tempFileBuf, "wb"); | |
167 | if (!fHandle) | |
168 | return FALSE; | |
169 | fwrite((void *)&header, sizeof(unsigned char), sizeof(mfPLACEABLEHEADER), fHandle); | |
170 | ||
171 | // Calculate origin and extent | |
172 | int originX = x1; | |
173 | int originY = y1; | |
174 | int extentX = x2 - x1; | |
175 | int extentY = (y2 - y1); | |
176 | ||
177 | // Read metafile header and write | |
178 | METAHEADER metaHeader; | |
179 | fread((void *)&metaHeader, sizeof(unsigned char), sizeof(metaHeader), fd); | |
180 | ||
181 | if (useOriginAndExtent) | |
182 | metaHeader.mtSize += 15; | |
183 | else | |
184 | metaHeader.mtSize += 5; | |
185 | ||
186 | fwrite((void *)&metaHeader, sizeof(unsigned char), sizeof(metaHeader), fHandle); | |
187 | ||
188 | // Write SetMapMode, SetWindowOrigin and SetWindowExt records | |
189 | char modeBuffer[8]; | |
190 | char originBuffer[10]; | |
191 | char extentBuffer[10]; | |
192 | METARECORD *modeRecord = (METARECORD *)&modeBuffer; | |
193 | ||
194 | METARECORD *originRecord = (METARECORD *)&originBuffer; | |
195 | METARECORD *extentRecord = (METARECORD *)&extentBuffer; | |
196 | ||
197 | modeRecord->rdSize = 4; | |
198 | modeRecord->rdFunction = META_SETMAPMODE; | |
e3065973 | 199 | modeRecord->rdParm[0] = wxMM_ANISOTROPIC; |
4bb6408c JS |
200 | |
201 | originRecord->rdSize = 5; | |
202 | originRecord->rdFunction = META_SETWINDOWORG; | |
203 | originRecord->rdParm[0] = originY; | |
204 | originRecord->rdParm[1] = originX; | |
205 | ||
206 | extentRecord->rdSize = 5; | |
207 | extentRecord->rdFunction = META_SETWINDOWEXT; | |
208 | extentRecord->rdParm[0] = extentY; | |
209 | extentRecord->rdParm[1] = extentX; | |
210 | ||
211 | fwrite((void *)modeBuffer, sizeof(char), 8, fHandle); | |
212 | ||
213 | if (useOriginAndExtent) | |
214 | { | |
215 | fwrite((void *)originBuffer, sizeof(char), 10, fHandle); | |
216 | fwrite((void *)extentBuffer, sizeof(char), 10, fHandle); | |
217 | } | |
218 | ||
219 | int ch = -2; | |
220 | while (ch != EOF) | |
221 | { | |
222 | ch = getc(fd); | |
223 | if (ch != EOF) | |
224 | { | |
225 | putc(ch, fHandle); | |
226 | } | |
227 | } | |
228 | fclose(fHandle); | |
229 | fclose(fd); | |
230 | wxRemoveFile(filename); | |
231 | wxCopyFile(tempFileBuf, filename); | |
232 | wxRemoveFile(tempFileBuf); | |
233 | return TRUE; | |
234 | } | |
235 | ||
236 | #endif | |
237 |