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1 | ///////////////////////////////////////////////////////////////////////////// | |
2 | // Name: winpars.cpp | |
3 | // Purpose: wxHtmlParser class (generic parser) | |
4 | // Author: Vaclav Slavik | |
5 | // RCS-ID: $Id$ | |
6 | // Copyright: (c) 1999 Vaclav Slavik | |
7 | // Licence: wxWindows Licence | |
8 | ///////////////////////////////////////////////////////////////////////////// | |
9 | ||
10 | ||
11 | #ifdef __GNUG__ | |
12 | #pragma implementation | |
13 | #endif | |
14 | ||
15 | #include "wx/wxprec.h" | |
16 | ||
17 | #include "wx/defs.h" | |
18 | #if wxUSE_HTML && wxUSE_STREAMS | |
19 | ||
20 | #ifdef __BORDLANDC__ | |
21 | #pragma hdrstop | |
22 | #endif | |
23 | ||
24 | #ifndef WXPRECOMP | |
25 | #include "wx/intl.h" | |
26 | #include "wx/dc.h" | |
27 | #endif | |
28 | ||
29 | #include "wx/html/htmldefs.h" | |
30 | #include "wx/html/winpars.h" | |
31 | #include "wx/html/htmlwin.h" | |
32 | #include "wx/fontmap.h" | |
33 | #include "wx/log.h" | |
34 | ||
35 | ||
36 | //----------------------------------------------------------------------------- | |
37 | // wxHtmlWinParser | |
38 | //----------------------------------------------------------------------------- | |
39 | ||
40 | ||
41 | wxList wxHtmlWinParser::m_Modules; | |
42 | ||
43 | wxHtmlWinParser::wxHtmlWinParser(wxHtmlWindow *wnd) : wxHtmlParser() | |
44 | { | |
45 | m_tmpStrBuf = NULL; | |
46 | m_tmpStrBufSize = 0; | |
47 | m_Window = wnd; | |
48 | m_Container = NULL; | |
49 | m_DC = NULL; | |
50 | m_CharHeight = m_CharWidth = 0; | |
51 | m_UseLink = FALSE; | |
52 | m_EncConv = NULL; | |
53 | m_InputEnc = m_OutputEnc = wxFONTENCODING_DEFAULT; | |
54 | ||
55 | { | |
56 | int i, j, k, l, m; | |
57 | for (i = 0; i < 2; i++) | |
58 | for (j = 0; j < 2; j++) | |
59 | for (k = 0; k < 2; k++) | |
60 | for (l = 0; l < 2; l++) | |
61 | for (m = 0; m < 7; m++) | |
62 | { | |
63 | m_FontsTable[i][j][k][l][m] = NULL; | |
64 | m_FontsFacesTable[i][j][k][l][m] = wxEmptyString; | |
65 | m_FontsEncTable[i][j][k][l][m] = wxFONTENCODING_DEFAULT; | |
66 | } | |
67 | #ifdef __WXMSW__ | |
68 | static int default_sizes[7] = {7, 8, 10, 12, 16, 22, 30}; | |
69 | #elif defined(__WXMAC__) | |
70 | static int default_sizes[7] = {9, 12, 14, 18, 24, 30, 36}; | |
71 | #else | |
72 | static int default_sizes[7] = {10, 12, 14, 16, 19, 24, 32}; | |
73 | #endif | |
74 | SetFonts("", "", default_sizes); | |
75 | } | |
76 | ||
77 | // fill in wxHtmlParser's tables: | |
78 | wxNode *node = m_Modules.GetFirst(); | |
79 | while (node) | |
80 | { | |
81 | wxHtmlTagsModule *mod = (wxHtmlTagsModule*) node->GetData(); | |
82 | mod->FillHandlersTable(this); | |
83 | node = node->GetNext(); | |
84 | } | |
85 | } | |
86 | ||
87 | wxHtmlWinParser::~wxHtmlWinParser() | |
88 | { | |
89 | int i, j, k, l, m; | |
90 | ||
91 | for (i = 0; i < 2; i++) | |
92 | for (j = 0; j < 2; j++) | |
93 | for (k = 0; k < 2; k++) | |
94 | for (l = 0; l < 2; l++) | |
95 | for (m = 0; m < 7; m++) | |
96 | { | |
97 | if (m_FontsTable[i][j][k][l][m] != NULL) | |
98 | delete m_FontsTable[i][j][k][l][m]; | |
99 | } | |
100 | delete m_EncConv; | |
101 | delete[] m_tmpStrBuf; | |
102 | } | |
103 | ||
104 | void wxHtmlWinParser::AddModule(wxHtmlTagsModule *module) | |
105 | { | |
106 | m_Modules.Append(module); | |
107 | } | |
108 | ||
109 | void wxHtmlWinParser::RemoveModule(wxHtmlTagsModule *module) | |
110 | { | |
111 | m_Modules.DeleteObject(module); | |
112 | } | |
113 | ||
114 | void wxHtmlWinParser::SetFonts(wxString normal_face, wxString fixed_face, const int *sizes) | |
115 | { | |
116 | int i, j, k, l, m; | |
117 | ||
118 | for (i = 0; i < 7; i++) m_FontsSizes[i] = sizes[i]; | |
119 | m_FontFaceFixed = fixed_face; | |
120 | m_FontFaceNormal = normal_face; | |
121 | ||
122 | SetInputEncoding(m_InputEnc); | |
123 | ||
124 | for (i = 0; i < 2; i++) | |
125 | for (j = 0; j < 2; j++) | |
126 | for (k = 0; k < 2; k++) | |
127 | for (l = 0; l < 2; l++) | |
128 | for (m = 0; m < 7; m++) { | |
129 | if (m_FontsTable[i][j][k][l][m] != NULL) | |
130 | { | |
131 | delete m_FontsTable[i][j][k][l][m]; | |
132 | m_FontsTable[i][j][k][l][m] = NULL; | |
133 | } | |
134 | } | |
135 | } | |
136 | ||
137 | void wxHtmlWinParser::InitParser(const wxString& source) | |
138 | { | |
139 | wxHtmlParser::InitParser(source); | |
140 | wxASSERT_MSG(m_DC != NULL, _T("no DC assigned to wxHtmlWinParser!!")); | |
141 | ||
142 | m_FontBold = m_FontItalic = m_FontUnderlined = m_FontFixed = FALSE; | |
143 | m_FontSize = 3; //default one | |
144 | CreateCurrentFont(); // we're selecting default font into | |
145 | m_DC->GetTextExtent("H", &m_CharWidth, &m_CharHeight); | |
146 | /* NOTE : we're not using GetCharWidth/Height() because | |
147 | of differences under X and win | |
148 | */ | |
149 | ||
150 | m_UseLink = FALSE; | |
151 | m_Link = wxHtmlLinkInfo("", ""); | |
152 | m_LinkColor.Set(0, 0, 0xFF); | |
153 | m_ActualColor.Set(0, 0, 0); | |
154 | m_Align = wxHTML_ALIGN_LEFT; | |
155 | m_tmpLastWasSpace = FALSE; | |
156 | ||
157 | OpenContainer(); | |
158 | ||
159 | OpenContainer(); | |
160 | m_Container->InsertCell(new wxHtmlColourCell(m_ActualColor)); | |
161 | m_Container->InsertCell(new wxHtmlFontCell(CreateCurrentFont())); | |
162 | } | |
163 | ||
164 | void wxHtmlWinParser::DoneParser() | |
165 | { | |
166 | m_Container = NULL; | |
167 | SetInputEncoding(wxFONTENCODING_DEFAULT); // for next call | |
168 | wxHtmlParser::DoneParser(); | |
169 | } | |
170 | ||
171 | wxObject* wxHtmlWinParser::GetProduct() | |
172 | { | |
173 | wxHtmlContainerCell *top; | |
174 | ||
175 | CloseContainer(); | |
176 | OpenContainer(); | |
177 | ||
178 | top = m_Container; | |
179 | while (top->GetParent()) top = top->GetParent(); | |
180 | return top; | |
181 | } | |
182 | ||
183 | wxFSFile *wxHtmlWinParser::OpenURL(wxHtmlURLType type, | |
184 | const wxString& url) const | |
185 | { | |
186 | // FIXME - normalize the URL to full path before passing to | |
187 | // OnOpeningURL!! | |
188 | if ( m_Window ) | |
189 | { | |
190 | wxString myurl(url); | |
191 | wxHtmlOpeningStatus status; | |
192 | for (;;) | |
193 | { | |
194 | wxString redirect; | |
195 | status = m_Window->OnOpeningURL(type, myurl, &redirect); | |
196 | if ( status != wxHTML_REDIRECT ) | |
197 | break; | |
198 | ||
199 | myurl = redirect; | |
200 | } | |
201 | ||
202 | if ( status == wxHTML_BLOCK ) | |
203 | return NULL; | |
204 | ||
205 | return GetFS()->OpenFile(myurl); | |
206 | } | |
207 | ||
208 | return wxHtmlParser::OpenURL(type, url); | |
209 | } | |
210 | ||
211 | void wxHtmlWinParser::AddText(const wxChar* txt) | |
212 | { | |
213 | wxHtmlCell *c; | |
214 | size_t i = 0, | |
215 | x, | |
216 | lng = wxStrlen(txt); | |
217 | register wxChar d; | |
218 | int templen = 0; | |
219 | wxChar nbsp = GetEntitiesParser()->GetCharForCode(160 /* nbsp */); | |
220 | ||
221 | if (lng+1 > m_tmpStrBufSize) | |
222 | { | |
223 | delete[] m_tmpStrBuf; | |
224 | m_tmpStrBuf = new wxChar[lng+1]; | |
225 | m_tmpStrBufSize = lng+1; | |
226 | } | |
227 | wxChar *temp = m_tmpStrBuf; | |
228 | ||
229 | if (m_tmpLastWasSpace) | |
230 | { | |
231 | while ((i < lng) && | |
232 | ((txt[i] == wxT('\n')) || (txt[i] == wxT('\r')) || (txt[i] == wxT(' ')) || | |
233 | (txt[i] == wxT('\t')))) i++; | |
234 | } | |
235 | ||
236 | while (i < lng) | |
237 | { | |
238 | x = 0; | |
239 | d = temp[templen++] = txt[i]; | |
240 | if ((d == wxT('\n')) || (d == wxT('\r')) || (d == wxT(' ')) || (d == wxT('\t'))) | |
241 | { | |
242 | i++, x++; | |
243 | while ((i < lng) && ((txt[i] == wxT('\n')) || (txt[i] == wxT('\r')) || | |
244 | (txt[i] == wxT(' ')) || (txt[i] == wxT('\t')))) i++, x++; | |
245 | } | |
246 | else i++; | |
247 | ||
248 | if (x) | |
249 | { | |
250 | temp[templen-1] = wxT(' '); | |
251 | temp[templen] = 0; | |
252 | if (templen == 1) continue; | |
253 | templen = 0; | |
254 | if (m_EncConv) | |
255 | m_EncConv->Convert(temp); | |
256 | size_t len = wxStrlen(temp); | |
257 | for (size_t j = 0; j < len; j++) | |
258 | if (temp[j] == nbsp) | |
259 | temp[j] = wxT(' '); | |
260 | c = new wxHtmlWordCell(temp, *(GetDC())); | |
261 | if (m_UseLink) | |
262 | c->SetLink(m_Link); | |
263 | m_Container->InsertCell(c); | |
264 | m_tmpLastWasSpace = TRUE; | |
265 | } | |
266 | } | |
267 | ||
268 | if (templen && (templen > 1 || temp[0] != wxT(' '))) | |
269 | { | |
270 | temp[templen] = 0; | |
271 | if (m_EncConv) | |
272 | m_EncConv->Convert(temp); | |
273 | size_t len = wxStrlen(temp); | |
274 | for (size_t j = 0; j < len; j++) | |
275 | if (temp[j] == nbsp) | |
276 | temp[j] = wxT(' '); | |
277 | c = new wxHtmlWordCell(temp, *(GetDC())); | |
278 | if (m_UseLink) | |
279 | c->SetLink(m_Link); | |
280 | m_Container->InsertCell(c); | |
281 | m_tmpLastWasSpace = FALSE; | |
282 | } | |
283 | } | |
284 | ||
285 | ||
286 | ||
287 | wxHtmlContainerCell* wxHtmlWinParser::OpenContainer() | |
288 | { | |
289 | m_Container = new wxHtmlContainerCell(m_Container); | |
290 | m_Container->SetAlignHor(m_Align); | |
291 | m_tmpLastWasSpace = TRUE; | |
292 | /* to avoid space being first character in paragraph */ | |
293 | return m_Container; | |
294 | } | |
295 | ||
296 | ||
297 | ||
298 | wxHtmlContainerCell* wxHtmlWinParser::SetContainer(wxHtmlContainerCell *c) | |
299 | { | |
300 | m_tmpLastWasSpace = TRUE; | |
301 | /* to avoid space being first character in paragraph */ | |
302 | return m_Container = c; | |
303 | } | |
304 | ||
305 | ||
306 | ||
307 | wxHtmlContainerCell* wxHtmlWinParser::CloseContainer() | |
308 | { | |
309 | m_Container = m_Container->GetParent(); | |
310 | return m_Container; | |
311 | } | |
312 | ||
313 | ||
314 | void wxHtmlWinParser::SetFontSize(int s) | |
315 | { | |
316 | if (s < 1) s = 1; | |
317 | else if (s > 7) s = 7; | |
318 | m_FontSize = s; | |
319 | } | |
320 | ||
321 | ||
322 | ||
323 | wxFont* wxHtmlWinParser::CreateCurrentFont() | |
324 | { | |
325 | int fb = GetFontBold(), | |
326 | fi = GetFontItalic(), | |
327 | fu = GetFontUnderlined(), | |
328 | ff = GetFontFixed(), | |
329 | fs = GetFontSize() - 1 /*remap from <1;7> to <0;6>*/ ; | |
330 | ||
331 | wxString face = ff ? m_FontFaceFixed : m_FontFaceNormal; | |
332 | wxString *faceptr = &(m_FontsFacesTable[fb][fi][fu][ff][fs]); | |
333 | wxFont **fontptr = &(m_FontsTable[fb][fi][fu][ff][fs]); | |
334 | wxFontEncoding *encptr = &(m_FontsEncTable[fb][fi][fu][ff][fs]); | |
335 | ||
336 | if (*fontptr != NULL && (*faceptr != face || *encptr != m_OutputEnc)) | |
337 | { | |
338 | delete *fontptr; | |
339 | *fontptr = NULL; | |
340 | } | |
341 | ||
342 | if (*fontptr == NULL) | |
343 | { | |
344 | *faceptr = face; | |
345 | *encptr = m_OutputEnc; | |
346 | *fontptr = new wxFont( | |
347 | (int) (m_FontsSizes[fs] * m_PixelScale), | |
348 | ff ? wxMODERN : wxSWISS, | |
349 | fi ? wxITALIC : wxNORMAL, | |
350 | fb ? wxBOLD : wxNORMAL, | |
351 | fu ? TRUE : FALSE, face, | |
352 | m_OutputEnc); | |
353 | } | |
354 | m_DC->SetFont(**fontptr); | |
355 | return (*fontptr); | |
356 | } | |
357 | ||
358 | ||
359 | ||
360 | void wxHtmlWinParser::SetLink(const wxHtmlLinkInfo& link) | |
361 | { | |
362 | m_Link = link; | |
363 | m_UseLink = (link.GetHref() != wxEmptyString); | |
364 | } | |
365 | ||
366 | ||
367 | void wxHtmlWinParser::SetFontFace(const wxString& face) | |
368 | { | |
369 | if (GetFontFixed()) m_FontFaceFixed = face; | |
370 | else m_FontFaceNormal = face; | |
371 | ||
372 | if (m_InputEnc != wxFONTENCODING_DEFAULT) | |
373 | SetInputEncoding(m_InputEnc); | |
374 | } | |
375 | ||
376 | ||
377 | ||
378 | void wxHtmlWinParser::SetInputEncoding(wxFontEncoding enc) | |
379 | { | |
380 | m_InputEnc = m_OutputEnc = wxFONTENCODING_DEFAULT; | |
381 | if (m_EncConv) | |
382 | { | |
383 | delete m_EncConv; | |
384 | m_EncConv = NULL; | |
385 | } | |
386 | ||
387 | if (enc == wxFONTENCODING_DEFAULT) return; | |
388 | ||
389 | wxFontEncoding altfix, altnorm; | |
390 | bool availfix, availnorm; | |
391 | ||
392 | // exact match? | |
393 | availnorm = wxTheFontMapper->IsEncodingAvailable(enc, m_FontFaceNormal); | |
394 | availfix = wxTheFontMapper->IsEncodingAvailable(enc, m_FontFaceFixed); | |
395 | if (availnorm && availfix) | |
396 | m_OutputEnc = enc; | |
397 | ||
398 | // alternatives? | |
399 | else if (wxTheFontMapper->GetAltForEncoding(enc, &altnorm, m_FontFaceNormal, FALSE) && | |
400 | wxTheFontMapper->GetAltForEncoding(enc, &altfix, m_FontFaceFixed, FALSE) && | |
401 | altnorm == altfix) | |
402 | m_OutputEnc = altnorm; | |
403 | ||
404 | // at least normal face? | |
405 | else if (availnorm) | |
406 | m_OutputEnc = enc; | |
407 | else if (wxTheFontMapper->GetAltForEncoding(enc, &altnorm, m_FontFaceNormal, FALSE)) | |
408 | m_OutputEnc = altnorm; | |
409 | ||
410 | // okay, let convert to ISO_8859-1, available always | |
411 | else | |
412 | m_OutputEnc = wxFONTENCODING_DEFAULT; | |
413 | ||
414 | m_InputEnc = enc; | |
415 | if (m_OutputEnc == wxFONTENCODING_DEFAULT) | |
416 | GetEntitiesParser()->SetEncoding(wxFONTENCODING_SYSTEM); | |
417 | else | |
418 | GetEntitiesParser()->SetEncoding(m_OutputEnc); | |
419 | ||
420 | if (m_InputEnc == m_OutputEnc) return; | |
421 | ||
422 | m_EncConv = new wxEncodingConverter(); | |
423 | if (!m_EncConv->Init(m_InputEnc, | |
424 | (m_OutputEnc == wxFONTENCODING_DEFAULT) ? | |
425 | wxFONTENCODING_ISO8859_1 : m_OutputEnc, | |
426 | wxCONVERT_SUBSTITUTE)) | |
427 | { // total failture :-( | |
428 | wxLogError(_("Failed to display HTML document in %s encoding"), | |
429 | wxFontMapper::GetEncodingName(enc).c_str()); | |
430 | m_InputEnc = m_OutputEnc = wxFONTENCODING_DEFAULT; | |
431 | delete m_EncConv; | |
432 | m_EncConv = NULL; | |
433 | } | |
434 | } | |
435 | ||
436 | ||
437 | ||
438 | ||
439 | ||
440 | //----------------------------------------------------------------------------- | |
441 | // wxHtmlWinTagHandler | |
442 | //----------------------------------------------------------------------------- | |
443 | ||
444 | IMPLEMENT_ABSTRACT_CLASS(wxHtmlWinTagHandler, wxHtmlTagHandler) | |
445 | ||
446 | //----------------------------------------------------------------------------- | |
447 | // wxHtmlTagsModule | |
448 | //----------------------------------------------------------------------------- | |
449 | ||
450 | // NB: This is *NOT* winpars.cpp's initialization and shutdown code!! | |
451 | // This module is an ancestor for tag handlers modules defined | |
452 | // in m_*.cpp files with TAGS_MODULE_BEGIN...TAGS_MODULE_END construct. | |
453 | // | |
454 | // Do not add any winpars.cpp shutdown or initialization code to it, | |
455 | // create a new module instead! | |
456 | ||
457 | IMPLEMENT_DYNAMIC_CLASS(wxHtmlTagsModule, wxModule) | |
458 | ||
459 | bool wxHtmlTagsModule::OnInit() | |
460 | { | |
461 | wxHtmlWinParser::AddModule(this); | |
462 | return TRUE; | |
463 | } | |
464 | ||
465 | void wxHtmlTagsModule::OnExit() | |
466 | { | |
467 | wxHtmlWinParser::RemoveModule(this); | |
468 | } | |
469 | ||
470 | #endif | |
471 |