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1 | ///////////////////////////////////////////////////////////////////////////// | |
2 | // Name: src/os2/metafile.cpp | |
3 | // Purpose: wxMetaFile, wxMetaFileDC etc. These classes are optional. | |
4 | // Author: David Webster | |
5 | // Modified by: | |
6 | // Created: 10/10/99 | |
7 | // RCS-ID: $Id$ | |
8 | // Copyright: (c) David Webster | |
9 | // Licence: wxWindows licence | |
10 | ///////////////////////////////////////////////////////////////////////////// | |
11 | ||
12 | // For compilers that support precompilation, includes "wx.h". | |
13 | #include "wx/wxprec.h" | |
14 | ||
15 | #if wxUSE_METAFILE | |
16 | ||
17 | #ifndef WX_PRECOMP | |
18 | #include "wx/utils.h" | |
19 | #include "wx/app.h" | |
20 | #endif | |
21 | ||
22 | #include "wx/metafile.h" | |
23 | #include "wx/clipbrd.h" | |
24 | #include "wx/os2/private.h" | |
25 | ||
26 | #include <stdio.h> | |
27 | #include <string.h> | |
28 | ||
29 | extern bool wxClipboardIsOpen; | |
30 | ||
31 | IMPLEMENT_DYNAMIC_CLASS(wxMetafile, wxObject) | |
32 | IMPLEMENT_ABSTRACT_CLASS(wxMetafileDC, wxDC) | |
33 | ||
34 | /* | |
35 | * Metafiles | |
36 | * Currently, the only purpose for making a metafile is to put | |
37 | * it on the clipboard. | |
38 | */ | |
39 | ||
40 | wxMetafileRefData::wxMetafileRefData(void) | |
41 | { | |
42 | m_metafile = 0; | |
43 | m_windowsMappingMode = wxMM_ANISOTROPIC; | |
44 | } | |
45 | ||
46 | wxMetafileRefData::~wxMetafileRefData(void) | |
47 | { | |
48 | if (m_metafile) | |
49 | { | |
50 | // TODO: DeleteMetaFile((HMETAFILE) m_metafile); | |
51 | m_metafile = 0; | |
52 | } | |
53 | } | |
54 | ||
55 | wxMetafile::wxMetafile(const wxString& file) | |
56 | { | |
57 | m_refData = new wxMetafileRefData; | |
58 | ||
59 | M_METAFILEDATA->m_windowsMappingMode = wxMM_ANISOTROPIC; | |
60 | M_METAFILEDATA->m_metafile = 0; | |
61 | if (!file.empty()) | |
62 | M_METAFILEDATA->m_metafile = (WXHANDLE)0; // TODO: GetMetaFile(file); | |
63 | } | |
64 | ||
65 | wxMetafile::~wxMetafile(void) | |
66 | { | |
67 | } | |
68 | ||
69 | bool wxMetafile::SetClipboard(int width, int height) | |
70 | { | |
71 | #if !wxUSE_CLIPBOARD | |
72 | wxUnusedVar(width); | |
73 | wxUnusedVar(height); | |
74 | return false; | |
75 | #else | |
76 | if (!m_refData) | |
77 | return false; | |
78 | ||
79 | bool alreadyOpen=wxClipboardOpen(); | |
80 | if (!alreadyOpen) | |
81 | { | |
82 | wxOpenClipboard(); | |
83 | if (!wxEmptyClipboard()) return FALSE; | |
84 | } | |
85 | bool success = wxSetClipboardData(wxDF_METAFILE, this, width,height); | |
86 | if (!alreadyOpen) wxCloseClipboard(); | |
87 | return (bool) success; | |
88 | #endif | |
89 | } | |
90 | ||
91 | bool wxMetafile::Play(wxDC *dc) | |
92 | { | |
93 | if (!m_refData) | |
94 | return FALSE; | |
95 | ||
96 | // if (dc->GetHDC() && M_METAFILEDATA->m_metafile) | |
97 | // PlayMetaFile((HDC) dc->GetHDC(), (HMETAFILE) M_METAFILEDATA->m_metafile); | |
98 | ||
99 | return true; | |
100 | } | |
101 | ||
102 | void wxMetafile::SetHMETAFILE(WXHANDLE mf) | |
103 | { | |
104 | if (m_refData) | |
105 | m_refData = new wxMetafileRefData; | |
106 | ||
107 | M_METAFILEDATA->m_metafile = mf; | |
108 | } | |
109 | ||
110 | void wxMetafile::SetWindowsMappingMode(int mm) | |
111 | { | |
112 | if (m_refData) | |
113 | m_refData = new wxMetafileRefData; | |
114 | ||
115 | M_METAFILEDATA->m_windowsMappingMode = mm; | |
116 | } | |
117 | ||
118 | /* | |
119 | * Metafile device context | |
120 | * | |
121 | */ | |
122 | ||
123 | // Original constructor that does not takes origin and extent. If you use this, | |
124 | // *DO* give origin/extent arguments to wxMakeMetafilePlaceable. | |
125 | wxMetafileDC::wxMetafileDC(const wxString& file) | |
126 | { | |
127 | m_metaFile = NULL; | |
128 | m_minX = 10000; | |
129 | m_minY = 10000; | |
130 | m_maxX = -10000; | |
131 | m_maxY = -10000; | |
132 | // m_title = NULL; | |
133 | ||
134 | if (!file.IsNull() && wxFileExists(file)) | |
135 | wxRemoveFile(file); | |
136 | ||
137 | // TODO | |
138 | /* | |
139 | if (!file.empty()) | |
140 | m_hDC = (WXHDC) CreateMetaFile(file); | |
141 | else | |
142 | m_hDC = (WXHDC) CreateMetaFile(NULL); | |
143 | */ | |
144 | ||
145 | m_ok = (m_hDC != (WXHDC) 0) ; | |
146 | ||
147 | // Actual Windows mapping mode, for future reference. | |
148 | m_windowsMappingMode = wxMM_TEXT; | |
149 | ||
150 | SetMapMode(wxMM_TEXT); // NOTE: does not set HDC mapmode (this is correct) | |
151 | } | |
152 | ||
153 | // New constructor that takes origin and extent. If you use this, don't | |
154 | // give origin/extent arguments to wxMakeMetafilePlaceable. | |
155 | wxMetafileDC::wxMetafileDC( const wxString& file, | |
156 | int WXUNUSED(xext), | |
157 | int WXUNUSED(yext), | |
158 | int WXUNUSED(xorg), | |
159 | int WXUNUSED(yorg) ) | |
160 | { | |
161 | m_minX = 10000; | |
162 | m_minY = 10000; | |
163 | m_maxX = -10000; | |
164 | m_maxY = -10000; | |
165 | if (!file.empty() && wxFileExists(file)) | |
166 | wxRemoveFile(file); | |
167 | ||
168 | // m_hDC = (WXHDC) CreateMetaFile(file); | |
169 | ||
170 | m_ok = true; | |
171 | ||
172 | // ::SetWindowOrgEx((HDC) m_hDC,xorg,yorg, NULL); | |
173 | // ::SetWindowExtEx((HDC) m_hDC,xext,yext, NULL); | |
174 | ||
175 | // Actual Windows mapping mode, for future reference. | |
176 | m_windowsMappingMode = wxMM_ANISOTROPIC; | |
177 | ||
178 | SetMapMode(wxMM_TEXT); // NOTE: does not set HDC mapmode (this is correct) | |
179 | } | |
180 | ||
181 | wxMetafileDC::~wxMetafileDC(void) | |
182 | { | |
183 | m_hDC = 0; | |
184 | } | |
185 | ||
186 | void wxMetafileDC::GetTextExtent(const wxString& WXUNUSED(string), | |
187 | long *WXUNUSED(x), | |
188 | long *WXUNUSED(y), | |
189 | long *WXUNUSED(descent), | |
190 | long *WXUNUSED(externalLeading), | |
191 | wxFont *theFont, | |
192 | bool WXUNUSED(use16bit) ) const | |
193 | { | |
194 | wxFont *fontToUse = theFont; | |
195 | if (!fontToUse) | |
196 | fontToUse = (wxFont*) &m_font; | |
197 | ||
198 | // TODO: | |
199 | /* | |
200 | HDC dc = GetDC(NULL); | |
201 | ||
202 | SIZE sizeRect; | |
203 | TEXTMETRIC tm; | |
204 | GetTextExtentPoint(dc, WXSTRINGCAST string, wxStrlen(WXSTRINGCAST string), &sizeRect); | |
205 | GetTextMetrics(dc, &tm); | |
206 | ||
207 | ReleaseDC(NULL, dc); | |
208 | ||
209 | if ( x ) | |
210 | *x = sizeRect.cx; | |
211 | if ( y ) | |
212 | *y = sizeRect.cy; | |
213 | if ( descent ) | |
214 | *descent = tm.tmDescent; | |
215 | if ( externalLeading ) | |
216 | *externalLeading = tm.tmExternalLeading; | |
217 | */ | |
218 | } | |
219 | ||
220 | wxMetafile *wxMetafileDC::Close(void) | |
221 | { | |
222 | SelectOldObjects(m_hDC); | |
223 | HANDLE mf = 0; // TODO: CloseMetaFile((HDC) m_hDC); | |
224 | m_hDC = 0; | |
225 | if (mf) | |
226 | { | |
227 | wxMetafile *wx_mf = new wxMetafile; | |
228 | wx_mf->SetHMETAFILE((WXHANDLE) mf); | |
229 | wx_mf->SetWindowsMappingMode(m_windowsMappingMode); | |
230 | return wx_mf; | |
231 | } | |
232 | return NULL; | |
233 | } | |
234 | ||
235 | void wxMetafileDC::SetMapMode(int mode) | |
236 | { | |
237 | m_mappingMode = mode; | |
238 | ||
239 | // int pixel_width = 0; | |
240 | // int pixel_height = 0; | |
241 | // int mm_width = 0; | |
242 | // int mm_height = 0; | |
243 | ||
244 | float mm2pixelsX = 10.0; | |
245 | float mm2pixelsY = 10.0; | |
246 | ||
247 | switch (mode) | |
248 | { | |
249 | case wxMM_TWIPS: | |
250 | { | |
251 | m_logicalScaleX = (float)(twips2mm * mm2pixelsX); | |
252 | m_logicalScaleY = (float)(twips2mm * mm2pixelsY); | |
253 | break; | |
254 | } | |
255 | case wxMM_POINTS: | |
256 | { | |
257 | m_logicalScaleX = (float)(pt2mm * mm2pixelsX); | |
258 | m_logicalScaleY = (float)(pt2mm * mm2pixelsY); | |
259 | break; | |
260 | } | |
261 | case wxMM_METRIC: | |
262 | { | |
263 | m_logicalScaleX = mm2pixelsX; | |
264 | m_logicalScaleY = mm2pixelsY; | |
265 | break; | |
266 | } | |
267 | case wxMM_LOMETRIC: | |
268 | { | |
269 | m_logicalScaleX = (float)(mm2pixelsX/10.0); | |
270 | m_logicalScaleY = (float)(mm2pixelsY/10.0); | |
271 | break; | |
272 | } | |
273 | default: | |
274 | case wxMM_TEXT: | |
275 | { | |
276 | m_logicalScaleX = 1.0; | |
277 | m_logicalScaleY = 1.0; | |
278 | break; | |
279 | } | |
280 | } | |
281 | m_nWindowExtX = 100; | |
282 | m_nWindowExtY = 100; | |
283 | } | |
284 | ||
285 | #ifdef __WIN32__ | |
286 | struct RECT32 | |
287 | { | |
288 | short left; | |
289 | short top; | |
290 | short right; | |
291 | short bottom; | |
292 | }; | |
293 | ||
294 | struct mfPLACEABLEHEADER { | |
295 | DWORD key; | |
296 | short hmf; | |
297 | RECT32 bbox; | |
298 | WORD inch; | |
299 | DWORD reserved; | |
300 | WORD checksum; | |
301 | }; | |
302 | #else | |
303 | struct mfPLACEABLEHEADER { | |
304 | DWORD key; | |
305 | HANDLE hmf; | |
306 | RECT bbox; | |
307 | WORD inch; | |
308 | DWORD reserved; | |
309 | WORD checksum; | |
310 | }; | |
311 | #endif | |
312 | ||
313 | /* | |
314 | * Pass filename of existing non-placeable metafile, and bounding box. | |
315 | * Adds a placeable metafile header, sets the mapping mode to anisotropic, | |
316 | * and sets the window origin and extent to mimic the wxMM_TEXT mapping mode. | |
317 | * | |
318 | */ | |
319 | ||
320 | bool wxMakeMetafilePlaceable(const wxString& filename, float scale) | |
321 | { | |
322 | return wxMakeMetafilePlaceable(filename, 0, 0, 0, 0, scale, FALSE); | |
323 | } | |
324 | ||
325 | bool wxMakeMetafilePlaceable(const wxString& WXUNUSED(filename), | |
326 | int WXUNUSED(x1), | |
327 | int WXUNUSED(y1), | |
328 | int WXUNUSED(x2), | |
329 | int WXUNUSED(y2), | |
330 | float WXUNUSED(scale), | |
331 | bool WXUNUSED(useOriginAndExtent)) | |
332 | { | |
333 | // TODO: the OS/2 PM/MM way to do this | |
334 | /* | |
335 | // I'm not sure if this is the correct way of suggesting a scale | |
336 | // to the client application, but it's the only way I can find. | |
337 | int unitsPerInch = (int)(576/scale); | |
338 | ||
339 | mfPLACEABLEHEADER header; | |
340 | header.key = 0x9AC6CDD7L; | |
341 | header.hmf = 0; | |
342 | header.bbox.xLeft = (int)(x1); | |
343 | header.bbox.yTop = (int)(y1); | |
344 | header.bbox.xRight = (int)(x2); | |
345 | header.bbox.yBottom = (int)(y2); | |
346 | header.inch = unitsPerInch; | |
347 | header.reserved = 0; | |
348 | ||
349 | // Calculate checksum | |
350 | WORD *p; | |
351 | mfPLACEABLEHEADER *pMFHead = &header; | |
352 | for (p =(WORD *)pMFHead,pMFHead -> checksum = 0; p < (WORD *)&pMFHead ->checksum; ++p) | |
353 | pMFHead ->checksum ^= *p; | |
354 | ||
355 | FILE *fd = fopen(filename.fn_str(), "rb"); | |
356 | if (!fd) | |
357 | return FALSE; | |
358 | ||
359 | wxChar tempFileBuf[256]; | |
360 | wxGetTempFileName(wxT("mf"), tempFileBuf); | |
361 | FILE *fHandle = fopen(wxConvFile.cWX2MB(tempFileBuf), "wb"); | |
362 | if (!fHandle) | |
363 | return FALSE; | |
364 | fwrite((void *)&header, sizeof(unsigned char), sizeof(mfPLACEABLEHEADER), fHandle); | |
365 | ||
366 | // Calculate origin and extent | |
367 | int originX = x1; | |
368 | int originY = y1; | |
369 | int extentX = x2 - x1; | |
370 | int extentY = (y2 - y1); | |
371 | ||
372 | // Read metafile header and write | |
373 | METAHEADER metaHeader; | |
374 | fread((void *)&metaHeader, sizeof(unsigned char), sizeof(metaHeader), fd); | |
375 | ||
376 | if (useOriginAndExtent) | |
377 | metaHeader.mtSize += 15; | |
378 | else | |
379 | metaHeader.mtSize += 5; | |
380 | ||
381 | fwrite((void *)&metaHeader, sizeof(unsigned char), sizeof(metaHeader), fHandle); | |
382 | ||
383 | // Write SetMapMode, SetWindowOrigin and SetWindowExt records | |
384 | char modeBuffer[8]; | |
385 | char originBuffer[10]; | |
386 | char extentBuffer[10]; | |
387 | METARECORD *modeRecord = (METARECORD *)&modeBuffer; | |
388 | ||
389 | METARECORD *originRecord = (METARECORD *)&originBuffer; | |
390 | METARECORD *extentRecord = (METARECORD *)&extentBuffer; | |
391 | ||
392 | modeRecord->rdSize = 4; | |
393 | modeRecord->rdFunction = META_SETMAPMODE; | |
394 | modeRecord->rdParm[0] = MM_ANISOTROPIC; | |
395 | ||
396 | originRecord->rdSize = 5; | |
397 | originRecord->rdFunction = META_SETWINDOWORG; | |
398 | originRecord->rdParm[0] = originY; | |
399 | originRecord->rdParm[1] = originX; | |
400 | ||
401 | extentRecord->rdSize = 5; | |
402 | extentRecord->rdFunction = META_SETWINDOWEXT; | |
403 | extentRecord->rdParm[0] = extentY; | |
404 | extentRecord->rdParm[1] = extentX; | |
405 | ||
406 | fwrite((void *)modeBuffer, sizeof(char), 8, fHandle); | |
407 | ||
408 | if (useOriginAndExtent) | |
409 | { | |
410 | fwrite((void *)originBuffer, sizeof(char), 10, fHandle); | |
411 | fwrite((void *)extentBuffer, sizeof(char), 10, fHandle); | |
412 | } | |
413 | ||
414 | int ch = -2; | |
415 | while (ch != EOF) | |
416 | { | |
417 | ch = getc(fd); | |
418 | if (ch != EOF) | |
419 | { | |
420 | putc(ch, fHandle); | |
421 | } | |
422 | } | |
423 | fclose(fHandle); | |
424 | fclose(fd); | |
425 | wxRemoveFile(filename); | |
426 | wxCopyFile(tempFileBuf, filename); | |
427 | wxRemoveFile(tempFileBuf); | |
428 | */ | |
429 | return true; | |
430 | } | |
431 | ||
432 | #endif // wxUSE_METAFILE |