src/html/winpars.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/html/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 #include "wx/wxprec.h"
  11
  12 #ifdef __BORLANDC__
  13     #pragma hdrstop
  14 #endif
  15
  16 #if wxUSE_HTML && wxUSE_STREAMS
  17
  18 #ifndef WX_PRECOMP
  19     #include "wx/intl.h"
  20     #include "wx/dc.h"
  21     #include "wx/log.h"
  22     #include "wx/settings.h"
  23 #endif
  24
  25 #include "wx/html/htmldefs.h"
  26 #include "wx/html/winpars.h"
  27 #include "wx/html/htmlwin.h"
  28 #include "wx/fontmap.h"
  29 #include "wx/uri.h"
  30
  31
  32 //-----------------------------------------------------------------------------
  33 // wxHtmlWinParser
  34 //-----------------------------------------------------------------------------
  35
  36 IMPLEMENT_ABSTRACT_CLASS(wxHtmlWinParser, wxHtmlParser)
  37
  38 wxList wxHtmlWinParser::m_Modules;
  39
  40 wxHtmlWinParser::wxHtmlWinParser(wxHtmlWindowInterface *wndIface)
  41 {
  42     m_tmpStrBuf = NULL;
  43     m_tmpStrBufSize = 0;
  44     m_windowInterface = wndIface;
  45     m_Container = NULL;
  46     m_DC = NULL;
  47     m_CharHeight = m_CharWidth = 0;
  48     m_UseLink = false;
  49 #if !wxUSE_UNICODE
  50     m_nbsp = 0;
  51     m_EncConv = NULL;
  52     m_InputEnc = wxFONTENCODING_ISO8859_1;
  53     m_OutputEnc = wxFONTENCODING_DEFAULT;
  54 #endif
  55     m_whitespaceMode = Whitespace_Normal;
  56     m_lastWordCell = NULL;
  57     m_posColumn = 0;
  58
  59     {
  60         int i, j, k, l, m;
  61         for (i = 0; i < 2; i++)
  62             for (j = 0; j < 2; j++)
  63                 for (k = 0; k < 2; k++)
  64                     for (l = 0; l < 2; l++)
  65                         for (m = 0; m < 7; m++)
  66                         {
  67                             m_FontsTable[i][j][k][l][m] = NULL;
  68                             m_FontsFacesTable[i][j][k][l][m] = wxEmptyString;
  69 #if !wxUSE_UNICODE
  70                             m_FontsEncTable[i][j][k][l][m] = wxFONTENCODING_DEFAULT;
  71 #endif
  72                         }
  73
  74         SetFonts(wxEmptyString, wxEmptyString, NULL);
  75     }
  76
  77     // fill in wxHtmlParser's tables:
  78     wxList::compatibility_iterator 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 #if !wxUSE_UNICODE
 101     delete m_EncConv;
 102 #endif
 103     delete[] m_tmpStrBuf;
 104 }
 105
 106 void wxHtmlWinParser::AddModule(wxHtmlTagsModule *module)
 107 {
 108     m_Modules.Append(module);
 109 }
 110
 111 void wxHtmlWinParser::RemoveModule(wxHtmlTagsModule *module)
 112 {
 113     m_Modules.DeleteObject(module);
 114 }
 115
 116 // build all HTML font sizes (1..7) from the given base size
 117 static void wxBuildFontSizes(int *sizes, int size)
 118 {
 119     // using a fixed factor (1.2, from CSS2) is a bad idea as explained at
 120     // http://www.w3.org/TR/CSS21/fonts.html#font-size-props but this is by far
 121     // simplest thing to do so still do it like this for now
 122     sizes[0] = int(size * 0.75); // exception to 1.2 rule, otherwise too small
 123     sizes[1] = int(size * 0.83);
 124     sizes[2] = size;
 125     sizes[3] = int(size * 1.2);
 126     sizes[4] = int(size * 1.44);
 127     sizes[5] = int(size * 1.73);
 128     sizes[6] = int(size * 2);
 129 }
 130
 131 static int wxGetDefaultHTMLFontSize()
 132 {
 133     // base the default font size on the size of the default system font but
 134     // also ensure that we have a font of reasonable size, otherwise small HTML
 135     // fonts are unreadable
 136     int size = wxNORMAL_FONT->GetPointSize();
 137     if ( size < 10 )
 138         size = 10;
 139     return size;
 140 }
 141
 142 void wxHtmlWinParser::SetFonts(const wxString& normal_face,
 143                                const wxString& fixed_face,
 144                                const int *sizes)
 145 {
 146     static int default_sizes[7] = { 0 };
 147     if ( !sizes )
 148     {
 149         if ( !default_sizes[0] )
 150             wxBuildFontSizes(default_sizes, wxGetDefaultHTMLFontSize());
 151
 152         sizes = default_sizes;
 153     }
 154
 155     int i, j, k, l, m;
 156
 157     for (i = 0; i < 7; i++)
 158         m_FontsSizes[i] = sizes[i];
 159
 160     m_FontFaceFixed = fixed_face;
 161     m_FontFaceNormal = normal_face;
 162
 163 #if !wxUSE_UNICODE
 164     SetInputEncoding(m_InputEnc);
 165 #endif
 166
 167     for (i = 0; i < 2; i++)
 168         for (j = 0; j < 2; j++)
 169             for (k = 0; k < 2; k++)
 170                 for (l = 0; l < 2; l++)
 171                     for (m = 0; m < 7; m++) {
 172                         if (m_FontsTable[i][j][k][l][m] != NULL)
 173                         {
 174                             delete m_FontsTable[i][j][k][l][m];
 175                             m_FontsTable[i][j][k][l][m] = NULL;
 176                         }
 177                     }
 178 }
 179
 180 void wxHtmlWinParser::SetStandardFonts(int size,
 181                                        const wxString& normal_face,
 182                                        const wxString& fixed_face)
 183 {
 184     if (size == -1)
 185         size = wxGetDefaultHTMLFontSize();
 186
 187     int f_sizes[7];
 188     wxBuildFontSizes(f_sizes, size);
 189
 190     wxString normal = normal_face;
 191     if ( normal.empty() )
 192         normal = wxNORMAL_FONT->GetFaceName();
 193
 194     SetFonts(normal, fixed_face, f_sizes);
 195 }
 196
 197 void wxHtmlWinParser::InitParser(const wxString& source)
 198 {
 199     wxHtmlParser::InitParser(source);
 200     wxASSERT_MSG(m_DC != NULL, wxT("no DC assigned to wxHtmlWinParser!!"));
 201
 202     m_FontBold = m_FontItalic = m_FontUnderlined = m_FontFixed = FALSE;
 203     m_FontSize = 3; //default one
 204     CreateCurrentFont();           // we're selecting default font into
 205
 206     // we're not using GetCharWidth/Height() because of
 207     // differences under X and win
 208     wxCoord w,h;
 209     m_DC->GetTextExtent( wxT("H"), &w, &h);
 210     m_CharWidth = w;
 211     m_CharHeight = h;
 212
 213     m_UseLink = false;
 214     m_Link = wxHtmlLinkInfo( wxEmptyString );
 215     m_LinkColor.Set(0, 0, 0xFF);
 216     m_ActualColor.Set(0, 0, 0);
 217     m_Align = wxHTML_ALIGN_LEFT;
 218     m_ScriptMode = wxHTML_SCRIPT_NORMAL;
 219     m_ScriptBaseline = 0;
 220     m_tmpLastWasSpace = false;
 221     m_lastWordCell = NULL;
 222
 223     // open the toplevel container that contains everything else and that
 224     // is never closed (this makes parser's life easier):
 225     OpenContainer();
 226
 227     // then open the first container into which page's content will go:
 228     OpenContainer();
 229
 230 #if !wxUSE_UNICODE
 231     wxString charset = ExtractCharsetInformation(source);
 232     if (!charset.empty())
 233     {
 234         wxFontEncoding enc = wxFontMapper::Get()->CharsetToEncoding(charset);
 235         if (enc != wxFONTENCODING_SYSTEM)
 236           SetInputEncoding(enc);
 237     }
 238 #endif
 239
 240     m_Container->InsertCell(new wxHtmlColourCell(m_ActualColor));
 241     wxColour windowColour = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW) ;
 242
 243     m_Container->InsertCell
 244                  (
 245                    new wxHtmlColourCell
 246                        (
 247                          m_windowInterface
 248                             ? m_windowInterface->GetHTMLBackgroundColour()
 249                             : windowColour,
 250                          wxHTML_CLR_BACKGROUND
 251                        )
 252                   );
 253
 254     m_Container->InsertCell(new wxHtmlFontCell(CreateCurrentFont()));
 255 }
 256
 257 void wxHtmlWinParser::DoneParser()
 258 {
 259     m_Container = NULL;
 260 #if !wxUSE_UNICODE
 261     SetInputEncoding(wxFONTENCODING_ISO8859_1); // for next call
 262 #endif
 263     wxHtmlParser::DoneParser();
 264 }
 265
 266 #if WXWIN_COMPATIBILITY_2_6
 267 wxHtmlWindow *wxHtmlWinParser::GetWindow()
 268 {
 269     if (!m_windowInterface)
 270         return NULL;
 271     return wxDynamicCast(m_windowInterface->GetHTMLWindow(), wxHtmlWindow);
 272 }
 273 #endif
 274
 275 wxObject* wxHtmlWinParser::GetProduct()
 276 {
 277     wxHtmlContainerCell *top;
 278
 279     CloseContainer();
 280     OpenContainer();
 281
 282     top = m_Container;
 283     while (top->GetParent()) top = top->GetParent();
 284     top->RemoveExtraSpacing(true, true);
 285
 286     return top;
 287 }
 288
 289 wxFSFile *wxHtmlWinParser::OpenURL(wxHtmlURLType type,
 290                                    const wxString& url) const
 291 {
 292     if ( !m_windowInterface )
 293         return wxHtmlParser::OpenURL(type, url);
 294
 295     wxString myurl(url);
 296     wxHtmlOpeningStatus status;
 297     for (;;)
 298     {
 299         wxString myfullurl(myurl);
 300
 301         // consider url as absolute path first
 302         wxURI current(myurl);
 303         myfullurl = current.BuildUnescapedURI();
 304
 305         // if not absolute then ...
 306         if( current.IsReference() )
 307         {
 308             wxString basepath = GetFS()->GetPath();
 309             wxURI base(basepath);
 310
 311             // ... try to apply base path if valid ...
 312             if( !base.IsReference() )
 313             {
 314                 wxURI path(myfullurl);
 315                 path.Resolve( base );
 316                 myfullurl = path.BuildUnescapedURI();
 317             }
 318             else
 319             {
 320                 // ... or force such addition if not included already
 321                 if( !current.GetPath().Contains(base.GetPath()) )
 322                 {
 323                     basepath += myurl;
 324                     wxURI connected( basepath );
 325                     myfullurl = connected.BuildUnescapedURI();
 326                 }
 327             }
 328         }
 329
 330         wxString redirect;
 331         status = m_windowInterface->OnHTMLOpeningURL(type, myfullurl, &redirect);
 332         if ( status != wxHTML_REDIRECT )
 333             break;
 334
 335         myurl = redirect;
 336     }
 337
 338     if ( status == wxHTML_BLOCK )
 339         return NULL;
 340
 341     int flags = wxFS_READ;
 342     if (type == wxHTML_URL_IMAGE)
 343         flags |= wxFS_SEEKABLE;
 344
 345     return GetFS()->OpenFile(myurl, flags);
 346 }
 347
 348 #define NBSP_UNICODE_VALUE  (wxChar(160))
 349 #if !wxUSE_UNICODE
 350     #define CUR_NBSP_VALUE m_nbsp
 351 #else
 352     #define CUR_NBSP_VALUE NBSP_UNICODE_VALUE
 353 #endif
 354
 355 void wxHtmlWinParser::AddText(const wxString& txt)
 356 {
 357 #if !wxUSE_UNICODE
 358     if ( m_nbsp == 0 )
 359         m_nbsp = GetEntitiesParser()->GetCharForCode(NBSP_UNICODE_VALUE);
 360 #endif
 361
 362     if ( m_whitespaceMode == Whitespace_Normal )
 363     {
 364         int templen = 0;
 365
 366         size_t lng = txt.length();
 367         if (lng+1 > m_tmpStrBufSize)
 368         {
 369             delete[] m_tmpStrBuf;
 370             m_tmpStrBuf = new wxChar[lng+1];
 371             m_tmpStrBufSize = lng+1;
 372         }
 373         wxChar *temp = m_tmpStrBuf;
 374
 375         wxString::const_iterator i = txt.begin();
 376         const wxString::const_iterator end = txt.end();
 377
 378         if (m_tmpLastWasSpace)
 379         {
 380             while ( (i < end) &&
 381                     (*i == wxT('\n') || *i == wxT('\r') || *i == wxT(' ') ||
 382                      *i == wxT('\t')) )
 383             {
 384                 ++i;
 385             }
 386         }
 387
 388         while (i < end)
 389         {
 390             size_t x = 0;
 391             const wxChar d = temp[templen++] = *i;
 392             if ((d == wxT('\n')) || (d == wxT('\r')) || (d == wxT(' ')) || (d == wxT('\t')))
 393             {
 394                 ++i, ++x;
 395                 while ( (i < end) &&
 396                         (*i == wxT('\n') || *i == wxT('\r') ||
 397                          *i == wxT(' ') || *i == wxT('\t')) )
 398                 {
 399                     ++i;
 400                     ++x;
 401                 }
 402             }
 403             else
 404             {
 405                 ++i;
 406             }
 407
 408             if (x)
 409             {
 410                 temp[templen-1] = wxT(' ');
 411                 FlushWordBuf(temp, templen);
 412                 m_tmpLastWasSpace = true;
 413             }
 414         }
 415
 416         if (templen && (templen > 1 || temp[0] != wxT(' ')))
 417         {
 418             FlushWordBuf(temp, templen);
 419             m_tmpLastWasSpace = false;
 420         }
 421     }
 422     else // m_whitespaceMode == Whitespace_Pre
 423     {
 424         if ( txt.find(CUR_NBSP_VALUE) != wxString::npos )
 425         {
 426             // we need to substitute spaces for &nbsp; here just like we
 427             // did in the Whitespace_Normal branch above
 428             wxString txt2(txt);
 429             txt2.Replace(CUR_NBSP_VALUE, ' ');
 430             AddPreBlock(txt2);
 431         }
 432         else
 433         {
 434             AddPreBlock(txt);
 435         }
 436
 437         // don't eat any whitespace in <pre> block
 438         m_tmpLastWasSpace = false;
 439     }
 440 }
 441
 442 void wxHtmlWinParser::FlushWordBuf(wxChar *buf, int& len)
 443 {
 444     buf[len] = 0;
 445
 446     for ( int i = 0; i < len; i++ )
 447     {
 448         if ( buf[i] == CUR_NBSP_VALUE )
 449             buf[i] = ' ';
 450     }
 451
 452 #if !wxUSE_UNICODE
 453     if (m_EncConv)
 454         m_EncConv->Convert(buf);
 455 #endif
 456
 457     AddWord(wxString(buf, len));
 458
 459     len = 0;
 460 }
 461
 462 void wxHtmlWinParser::AddWord(wxHtmlWordCell *word)
 463 {
 464     ApplyStateToCell(word);
 465
 466     m_Container->InsertCell(word);
 467     word->SetPreviousWord(m_lastWordCell);
 468     m_lastWordCell = word;
 469 }
 470
 471 void wxHtmlWinParser::AddPreBlock(const wxString& text)
 472 {
 473     if ( text.find('\t') != wxString::npos )
 474     {
 475         wxString text2;
 476         text2.reserve(text.length());
 477
 478         const wxString::const_iterator end = text.end();
 479         wxString::const_iterator copyFrom = text.begin();
 480         size_t pos = 0;
 481         int posColumn = m_posColumn;
 482         for ( wxString::const_iterator i = copyFrom; i != end; ++i, ++pos )
 483         {
 484             if ( *i == '\t' )
 485             {
 486                 if ( copyFrom != i )
 487                     text2.append(copyFrom, i);
 488
 489                 const unsigned SPACES_PER_TAB = 8;
 490                 const size_t expandTo = SPACES_PER_TAB - posColumn % SPACES_PER_TAB;
 491                 text2.append(expandTo, ' ');
 492
 493                 posColumn += expandTo;
 494                 copyFrom = i + 1;
 495             }
 496             else
 497             {
 498                 ++posColumn;
 499             }
 500         }
 501         if ( copyFrom != text.end() )
 502             text2.append(copyFrom, text.end());
 503
 504         AddWord(new wxHtmlWordWithTabsCell(text2, text, m_posColumn, *(GetDC())));
 505
 506         m_posColumn = posColumn;
 507     }
 508     else
 509     {
 510         // no special formatting needed
 511         AddWord(text);
 512         m_posColumn += text.length();
 513     }
 514 }
 515
 516
 517 wxHtmlContainerCell* wxHtmlWinParser::OpenContainer()
 518 {
 519     m_Container = new wxHtmlContainerCell(m_Container);
 520     m_Container->SetAlignHor(m_Align);
 521     m_posColumn = 0;
 522     m_tmpLastWasSpace = true;
 523         /* to avoid space being first character in paragraph */
 524     return m_Container;
 525 }
 526
 527
 528
 529 wxHtmlContainerCell* wxHtmlWinParser::SetContainer(wxHtmlContainerCell *c)
 530 {
 531     m_tmpLastWasSpace = true;
 532         /* to avoid space being first character in paragraph */
 533     return m_Container = c;
 534 }
 535
 536
 537
 538 wxHtmlContainerCell* wxHtmlWinParser::CloseContainer()
 539 {
 540     m_Container = m_Container->GetParent();
 541     return m_Container;
 542 }
 543
 544
 545 void wxHtmlWinParser::SetFontSize(int s)
 546 {
 547     if (s < 1)
 548         s = 1;
 549     else if (s > 7)
 550         s = 7;
 551     m_FontSize = s;
 552 }
 553
 554
 555 void wxHtmlWinParser::SetDC(wxDC *dc, double pixel_scale, double font_scale)
 556 {
 557     m_DC = dc;
 558     m_PixelScale = pixel_scale;
 559     m_FontScale = font_scale;
 560 }
 561
 562 void wxHtmlWinParser::SetFontPointSize(int pt)
 563 {
 564     if (pt <= m_FontsSizes[0])
 565         m_FontSize = 1;
 566     else if (pt >= m_FontsSizes[6])
 567         m_FontSize = 7;
 568     else
 569     {
 570         // Find the font closest to the given value with a simple linear search
 571         // (binary search is not worth it here for so small number of elements)
 572         for ( int n = 0; n < 6; n++ )
 573         {
 574             if ( (pt > m_FontsSizes[n]) && (pt <= m_FontsSizes[n + 1]) )
 575             {
 576                 if ( (pt - m_FontsSizes[n]) >= (m_FontsSizes[n + 1] - pt) )
 577                 {
 578                     // The actual size is closer to the next entry than to this
 579                     // one, so use it.
 580                     n++;
 581                 }
 582
 583                 // Notice that m_FontSize starts from 1, hence +1 here.
 584                 m_FontSize = n + 1;
 585
 586                 break;
 587             }
 588         }
 589     }
 590 }
 591
 592 wxFont* wxHtmlWinParser::CreateCurrentFont()
 593 {
 594     int fb = GetFontBold(),
 595         fi = GetFontItalic(),
 596         fu = GetFontUnderlined(),
 597         ff = GetFontFixed(),
 598         fs = GetFontSize() - 1 /*remap from <1;7> to <0;6>*/ ;
 599
 600     wxString face = ff ? m_FontFaceFixed : m_FontFaceNormal;
 601     wxString *faceptr = &(m_FontsFacesTable[fb][fi][fu][ff][fs]);
 602     wxFont **fontptr = &(m_FontsTable[fb][fi][fu][ff][fs]);
 603 #if !wxUSE_UNICODE
 604     wxFontEncoding *encptr = &(m_FontsEncTable[fb][fi][fu][ff][fs]);
 605 #endif
 606
 607     if (*fontptr != NULL && (*faceptr != face
 608 #if !wxUSE_UNICODE
 609                              || *encptr != m_OutputEnc
 610 #endif
 611                             ))
 612     {
 613         wxDELETE(*fontptr);
 614     }
 615
 616     if (*fontptr == NULL)
 617     {
 618         *faceptr = face;
 619         *fontptr = new wxFont(
 620                        (int) (m_FontsSizes[fs] * m_FontScale),
 621                        ff ? wxMODERN : wxSWISS,
 622                        fi ? wxITALIC : wxNORMAL,
 623                        fb ? wxBOLD : wxNORMAL,
 624                        fu ? true : false, face
 625 #if wxUSE_UNICODE
 626                        );
 627 #else
 628                        , m_OutputEnc);
 629         *encptr = m_OutputEnc;
 630 #endif
 631     }
 632     m_DC->SetFont(**fontptr);
 633     return (*fontptr);
 634 }
 635
 636
 637
 638 void wxHtmlWinParser::SetLink(const wxHtmlLinkInfo& link)
 639 {
 640     m_Link = link;
 641     m_UseLink = (link.GetHref() != wxEmptyString);
 642 }
 643
 644 void wxHtmlWinParser::SetFontFace(const wxString& face)
 645 {
 646     if (GetFontFixed())
 647         m_FontFaceFixed = face;
 648     else
 649         m_FontFaceNormal = face;
 650
 651 #if !wxUSE_UNICODE
 652     if (m_InputEnc != wxFONTENCODING_DEFAULT)
 653         SetInputEncoding(m_InputEnc);
 654 #endif
 655 }
 656
 657 void wxHtmlWinParser::ApplyStateToCell(wxHtmlCell *cell)
 658 {
 659     // set the link:
 660     if (m_UseLink)
 661         cell->SetLink(GetLink());
 662
 663     // apply current script mode settings:
 664     cell->SetScriptMode(GetScriptMode(), GetScriptBaseline());
 665 }
 666
 667
 668 #if !wxUSE_UNICODE
 669 void wxHtmlWinParser::SetInputEncoding(wxFontEncoding enc)
 670 {
 671     // the character used for non-breakable space may change:
 672     m_nbsp = 0;
 673
 674     m_InputEnc = m_OutputEnc = wxFONTENCODING_DEFAULT;
 675     wxDELETE(m_EncConv);
 676
 677     if (enc == wxFONTENCODING_DEFAULT)
 678         return;
 679
 680     wxFontEncoding altfix, altnorm;
 681     bool availfix, availnorm;
 682
 683     availnorm = wxFontMapper::Get()->IsEncodingAvailable(enc, m_FontFaceNormal);
 684     availfix = wxFontMapper::Get()->IsEncodingAvailable(enc, m_FontFaceFixed);
 685
 686     if (availnorm && availfix)
 687     {
 688         // exact match?
 689         m_OutputEnc = enc;
 690     }
 691
 692     else if (wxFontMapper::Get()->GetAltForEncoding(enc, &altnorm, m_FontFaceNormal, false) &&
 693              wxFontMapper::Get()->GetAltForEncoding(enc, &altfix, m_FontFaceFixed, false) &&
 694              altnorm == altfix)
 695     {
 696         // alternatives?
 697         m_OutputEnc = altnorm;
 698     }
 699     else if (availnorm)
 700     {
 701         // at least normal face?
 702         m_OutputEnc = enc;
 703     }
 704     else if (wxFontMapper::Get()->GetAltForEncoding(enc, &altnorm, m_FontFaceNormal, false))
 705     {
 706         m_OutputEnc = altnorm;
 707     }
 708     else
 709     {
 710 #ifndef __WXMAC__
 711         // okay, let's convert to ISO_8859-1, available always
 712         m_OutputEnc = wxFONTENCODING_DEFAULT;
 713 #else
 714         m_OutputEnc = wxLocale::GetSystemEncoding() ;
 715 #endif
 716     }
 717
 718     m_InputEnc = enc;
 719     if (m_OutputEnc == wxFONTENCODING_DEFAULT)
 720     {
 721         GetEntitiesParser()->SetEncoding(wxFONTENCODING_SYSTEM);
 722     }
 723     else
 724     {
 725         GetEntitiesParser()->SetEncoding(m_OutputEnc);
 726     }
 727
 728     if (m_InputEnc == m_OutputEnc)
 729         return;
 730
 731     m_EncConv = new wxEncodingConverter();
 732     if (!m_EncConv->Init(m_InputEnc,
 733                            (m_OutputEnc == wxFONTENCODING_DEFAULT) ?
 734                                       wxFONTENCODING_ISO8859_1 : m_OutputEnc,
 735                            wxCONVERT_SUBSTITUTE))
 736     { // total failure :-(
 737         wxLogError(_("Failed to display HTML document in %s encoding"),
 738                    wxFontMapper::GetEncodingName(enc).c_str());
 739         m_InputEnc = m_OutputEnc = wxFONTENCODING_DEFAULT;
 740         wxDELETE(m_EncConv);
 741     }
 742 }
 743 #endif
 744
 745
 746
 747
 748 //-----------------------------------------------------------------------------
 749 // wxHtmlWinTagHandler
 750 //-----------------------------------------------------------------------------
 751
 752 IMPLEMENT_ABSTRACT_CLASS(wxHtmlWinTagHandler, wxHtmlTagHandler)
 753
 754 //-----------------------------------------------------------------------------
 755 // wxHtmlTagsModule
 756 //-----------------------------------------------------------------------------
 757
 758 // NB: This is *NOT* winpars.cpp's initialization and shutdown code!!
 759 //     This module is an ancestor for tag handlers modules defined
 760 //     in m_*.cpp files with TAGS_MODULE_BEGIN...TAGS_MODULE_END construct.
 761 //
 762 //     Do not add any winpars.cpp shutdown or initialization code to it,
 763 //     create a new module instead!
 764
 765 IMPLEMENT_DYNAMIC_CLASS(wxHtmlTagsModule, wxModule)
 766
 767 bool wxHtmlTagsModule::OnInit()
 768 {
 769     wxHtmlWinParser::AddModule(this);
 770     return true;
 771 }
 772
 773 void wxHtmlTagsModule::OnExit()
 774 {
 775     wxHtmlWinParser::RemoveModule(this);
 776 }
 777
 778 #endif