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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
41wxList wxHtmlWinParser::m_Modules;
42
43wxHtmlWinParser::wxHtmlWinParser(wxWindow *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
88wxHtmlWinParser::~wxHtmlWinParser()
89{
90 int i, j, k, l, m;
91
92 for (i = 0; i < 2; i++)
93 for (j = 0; j < 2; j++)
94 for (k = 0; k < 2; k++)
95 for (l = 0; l < 2; l++)
96 for (m = 0; m < 7; m++)
97 {
98 if (m_FontsTable[i][j][k][l][m] != NULL)
99 delete m_FontsTable[i][j][k][l][m];
100 }
101 delete m_EncConv;
102 delete[] m_tmpStrBuf;
103}
104
105
106void wxHtmlWinParser::AddModule(wxHtmlTagsModule *module)
107{
108 m_Modules.Append(module);
109}
110
111
112
113void wxHtmlWinParser::RemoveModule(wxHtmlTagsModule *module)
114{
115 m_Modules.DeleteObject(module);
116}
117
118
119
120void wxHtmlWinParser::SetFonts(wxString normal_face, wxString fixed_face, const int *sizes)
121{
122 int i, j, k, l, m;
123
124 for (i = 0; i < 7; i++) m_FontsSizes[i] = sizes[i];
125 m_FontFaceFixed = fixed_face;
126 m_FontFaceNormal = normal_face;
127
128 SetInputEncoding(m_InputEnc);
129
130 for (i = 0; i < 2; i++)
131 for (j = 0; j < 2; j++)
132 for (k = 0; k < 2; k++)
133 for (l = 0; l < 2; l++)
134 for (m = 0; m < 7; m++) {
135 if (m_FontsTable[i][j][k][l][m] != NULL)
136 {
137 delete m_FontsTable[i][j][k][l][m];
138 m_FontsTable[i][j][k][l][m] = NULL;
139 }
140 }
141}
142
143
144
145void wxHtmlWinParser::InitParser(const wxString& source)
146{
147 wxHtmlParser::InitParser(source);
148 wxASSERT_MSG(m_DC != NULL, _T("no DC assigned to wxHtmlWinParser!!"));
149
150 m_FontBold = m_FontItalic = m_FontUnderlined = m_FontFixed = FALSE;
151 m_FontSize = 3; //default one
152 CreateCurrentFont(); // we're selecting default font into
153 m_DC->GetTextExtent("H", &m_CharWidth, &m_CharHeight);
154 /* NOTE : we're not using GetCharWidth/Height() because
155 of differences under X and win
156 */
157
158 m_UseLink = FALSE;
159 m_Link = wxHtmlLinkInfo("", "");
160 m_LinkColor.Set(0, 0, 0xFF);
161 m_ActualColor.Set(0, 0, 0);
162 m_Align = wxHTML_ALIGN_LEFT;
163 m_tmpLastWasSpace = FALSE;
164
165 OpenContainer();
166
167 OpenContainer();
168 m_Container->InsertCell(new wxHtmlColourCell(m_ActualColor));
169 m_Container->InsertCell(new wxHtmlFontCell(CreateCurrentFont()));
170}
171
172
173
174void wxHtmlWinParser::DoneParser()
175{
176 m_Container = NULL;
177 SetInputEncoding(wxFONTENCODING_DEFAULT); // for next call
178 wxHtmlParser::DoneParser();
179}
180
181
182
183wxObject* wxHtmlWinParser::GetProduct()
184{
185 wxHtmlContainerCell *top;
186
187 CloseContainer();
188 OpenContainer();
189
190 top = m_Container;
191 while (top->GetParent()) top = top->GetParent();
192 return top;
193}
194
195
196void wxHtmlWinParser::AddText(const wxChar* txt)
197{
198 wxHtmlCell *c;
199 int i = 0, x, lng = wxStrlen(txt);
200 register wxChar d;
201 int templen = 0;
202
203 if (lng+1 > m_tmpStrBufSize)
204 {
205 delete[] m_tmpStrBuf;
206 m_tmpStrBuf = new wxChar[lng+1];
207 m_tmpStrBufSize = lng+1;
208 }
209 wxChar *temp = m_tmpStrBuf;
210
211 if (m_tmpLastWasSpace)
212 {
213 while ((i < lng) &&
214 ((txt[i] == wxT('\n')) || (txt[i] == wxT('\r')) || (txt[i] == wxT(' ')) ||
215 (txt[i] == wxT('\t')))) i++;
216 }
217
218 while (i < lng)
219 {
220 x = 0;
221 d = temp[templen++] = txt[i];
222 if ((d == wxT('\n')) || (d == wxT('\r')) || (d == wxT(' ')) || (d == wxT('\t')))
223 {
224 i++, x++;
225 while ((i < lng) && ((txt[i] == wxT('\n')) || (txt[i] == wxT('\r')) ||
226 (txt[i] == wxT(' ')) || (txt[i] == wxT('\t')))) i++, x++;
227 }
228 else i++;
229
230 if (x)
231 {
232 temp[templen-1] = wxT(' ');
233 temp[templen] = 0;
234 templen = 0;
235 if (m_EncConv)
236 m_EncConv->Convert(temp);
237 c = new wxHtmlWordCell(GetEntitiesParser()->Parse(temp), *(GetDC()));
238 if (m_UseLink)
239 c->SetLink(m_Link);
240 m_Container->InsertCell(c);
241 m_tmpLastWasSpace = TRUE;
242 }
243 }
244 if (templen)
245 {
246 temp[templen] = 0;
247 if (m_EncConv)
248 m_EncConv->Convert(temp);
249 c = new wxHtmlWordCell(GetEntitiesParser()->Parse(temp), *(GetDC()));
250 if (m_UseLink)
251 c->SetLink(m_Link);
252 m_Container->InsertCell(c);
253 m_tmpLastWasSpace = FALSE;
254 }
255}
256
257
258
259wxHtmlContainerCell* wxHtmlWinParser::OpenContainer()
260{
261 m_Container = new wxHtmlContainerCell(m_Container);
262 m_Container->SetAlignHor(m_Align);
263 m_tmpLastWasSpace = TRUE;
264 /* to avoid space being first character in paragraph */
265 return m_Container;
266}
267
268
269
270wxHtmlContainerCell* wxHtmlWinParser::SetContainer(wxHtmlContainerCell *c)
271{
272 m_tmpLastWasSpace = TRUE;
273 /* to avoid space being first character in paragraph */
274 return m_Container = c;
275}
276
277
278
279wxHtmlContainerCell* wxHtmlWinParser::CloseContainer()
280{
281 m_Container = m_Container->GetParent();
282 return m_Container;
283}
284
285
286void wxHtmlWinParser::SetFontSize(int s)
287{
288 if (s < 1) s = 1;
289 else if (s > 7) s = 7;
290 m_FontSize = s;
291}
292
293
294
295wxFont* wxHtmlWinParser::CreateCurrentFont()
296{
297 int fb = GetFontBold(),
298 fi = GetFontItalic(),
299 fu = GetFontUnderlined(),
300 ff = GetFontFixed(),
301 fs = GetFontSize() - 1 /*remap from <1;7> to <0;6>*/ ;
302
303 wxString face = ff ? m_FontFaceFixed : m_FontFaceNormal;
304 wxString *faceptr = &(m_FontsFacesTable[fb][fi][fu][ff][fs]);
305 wxFont **fontptr = &(m_FontsTable[fb][fi][fu][ff][fs]);
306 wxFontEncoding *encptr = &(m_FontsEncTable[fb][fi][fu][ff][fs]);
307
308 if (*fontptr != NULL && (*faceptr != face || *encptr != m_OutputEnc))
309 {
310 delete *fontptr;
311 *fontptr = NULL;
312 }
313
314 if (*fontptr == NULL)
315 {
316 *faceptr = face;
317 *encptr = m_OutputEnc;
318 *fontptr = new wxFont(
319 (int) (m_FontsSizes[fs] * m_PixelScale),
320 ff ? wxMODERN : wxSWISS,
321 fi ? wxITALIC : wxNORMAL,
322 fb ? wxBOLD : wxNORMAL,
323 fu ? TRUE : FALSE, face,
324 m_OutputEnc);
325 }
326 m_DC->SetFont(**fontptr);
327 return (*fontptr);
328}
329
330
331
332void wxHtmlWinParser::SetLink(const wxHtmlLinkInfo& link)
333{
334 m_Link = link;
335 m_UseLink = (link.GetHref() != wxEmptyString);
336}
337
338
339void wxHtmlWinParser::SetFontFace(const wxString& face)
340{
341 if (GetFontFixed()) m_FontFaceFixed = face;
342 else m_FontFaceNormal = face;
343
344 if (m_InputEnc != wxFONTENCODING_DEFAULT)
345 SetInputEncoding(m_InputEnc);
346}
347
348
349
350void wxHtmlWinParser::SetInputEncoding(wxFontEncoding enc)
351{
352 m_InputEnc = m_OutputEnc = wxFONTENCODING_DEFAULT;
353 if (m_EncConv)
354 {
355 delete m_EncConv;
356 m_EncConv = NULL;
357 }
358
359 if (enc == wxFONTENCODING_DEFAULT) return;
360
361 wxFontEncoding altfix, altnorm;
362 bool availfix, availnorm;
363
364 // exact match?
365 availnorm = wxTheFontMapper->IsEncodingAvailable(enc, m_FontFaceNormal);
366 availfix = wxTheFontMapper->IsEncodingAvailable(enc, m_FontFaceFixed);
367 if (availnorm && availfix)
368 m_OutputEnc = enc;
369
370 // alternatives?
371 else if (wxTheFontMapper->GetAltForEncoding(enc, &altnorm, m_FontFaceNormal, FALSE) &&
372 wxTheFontMapper->GetAltForEncoding(enc, &altfix, m_FontFaceFixed, FALSE) &&
373 altnorm == altfix)
374 m_OutputEnc = altnorm;
375
376 // at least normal face?
377 else if (availnorm)
378 m_OutputEnc = enc;
379 else if (wxTheFontMapper->GetAltForEncoding(enc, &altnorm, m_FontFaceNormal, FALSE))
380 m_OutputEnc = altnorm;
381
382 // okay, let convert to ISO_8859-1, available always
383 else
384 m_OutputEnc = wxFONTENCODING_DEFAULT;
385
386 m_InputEnc = enc;
387 if (m_OutputEnc == wxFONTENCODING_DEFAULT)
388 GetEntitiesParser()->SetEncoding(wxFONTENCODING_SYSTEM);
389 else
390 GetEntitiesParser()->SetEncoding(m_OutputEnc);
391
392 if (m_InputEnc == m_OutputEnc) return;
393
394 m_EncConv = new wxEncodingConverter();
395 if (!m_EncConv->Init(m_InputEnc,
396 (m_OutputEnc == wxFONTENCODING_DEFAULT) ?
397 wxFONTENCODING_ISO8859_1 : m_OutputEnc,
398 wxCONVERT_SUBSTITUTE))
399 { // total failture :-(
400 wxLogError(_("Failed to display HTML document in %s encoding"),
401 wxFontMapper::GetEncodingName(enc).c_str());
402 m_InputEnc = m_OutputEnc = wxFONTENCODING_DEFAULT;
403 delete m_EncConv;
404 m_EncConv = NULL;
405 }
406}
407
408
409
410
411
412//-----------------------------------------------------------------------------
413// wxHtmlWinTagHandler
414//-----------------------------------------------------------------------------
415
416IMPLEMENT_ABSTRACT_CLASS(wxHtmlWinTagHandler, wxHtmlTagHandler)
417
418
419
420//-----------------------------------------------------------------------------
421// wxHtmlTagsModule
422//-----------------------------------------------------------------------------
423
424
425IMPLEMENT_DYNAMIC_CLASS(wxHtmlTagsModule, wxModule)
426
427
428bool wxHtmlTagsModule::OnInit()
429{
430 wxHtmlWinParser::AddModule(this);
431 return TRUE;
432}
433
434
435
436void wxHtmlTagsModule::OnExit()
437{
438 wxHtmlWinParser::RemoveModule(this);
439}
440#endif
441