src/html/htmlwin.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        htmlwin.cpp
   3 // Purpose:     wxHtmlWindow class for parsing & displaying HTML (implementation)
   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 "htmlwin.h"
  13 #pragma implementation "htmlproc.h"
  14 #endif
  15
  16 #include "wx/wxprec.h"
  17
  18 #include "wx/defs.h"
  19 #if wxUSE_HTML && wxUSE_STREAMS
  20
  21 #ifdef __BORDLANDC__
  22 #pragma hdrstop
  23 #endif
  24
  25 #ifndef WXPRECOMP
  26     #include "wx/log.h"
  27     #include "wx/intl.h"
  28     #include "wx/dcclient.h"
  29     #include "wx/frame.h"
  30 #endif
  31
  32 #include "wx/html/htmlwin.h"
  33 #include "wx/html/htmlproc.h"
  34 #include "wx/list.h"
  35
  36 #include "wx/arrimpl.cpp"
  37 #include "wx/listimpl.cpp"
  38
  39 //-----------------------------------------------------------------------------
  40 // wxHtmlHistoryItem
  41 //-----------------------------------------------------------------------------
  42
  43 // item of history list
  44 class WXDLLEXPORT wxHtmlHistoryItem : public wxObject
  45 {
  46 public:
  47     wxHtmlHistoryItem(const wxString& p, const wxString& a) {m_Page = p, m_Anchor = a, m_Pos = 0;}
  48     int GetPos() const {return m_Pos;}
  49     void SetPos(int p) {m_Pos = p;}
  50     const wxString& GetPage() const {return m_Page;}
  51     const wxString& GetAnchor() const {return m_Anchor;}
  52
  53 private:
  54     wxString m_Page;
  55     wxString m_Anchor;
  56     int m_Pos;
  57 };
  58
  59
  60 //-----------------------------------------------------------------------------
  61 // our private arrays:
  62 //-----------------------------------------------------------------------------
  63
  64 WX_DECLARE_OBJARRAY(wxHtmlHistoryItem, wxHtmlHistoryArray);
  65 WX_DEFINE_OBJARRAY(wxHtmlHistoryArray);
  66
  67 WX_DECLARE_LIST(wxHtmlProcessor, wxHtmlProcessorList);
  68 WX_DEFINE_LIST(wxHtmlProcessorList);
  69
  70 //-----------------------------------------------------------------------------
  71 // wxHtmlWindow
  72 //-----------------------------------------------------------------------------
  73
  74
  75 void wxHtmlWindow::Init()
  76 {
  77     m_tmpMouseMoved = FALSE;
  78     m_tmpLastLink = NULL;
  79     m_tmpLastCell = NULL;
  80     m_tmpCanDrawLocks = 0;
  81     m_FS = new wxFileSystem();
  82     m_RelatedStatusBar = -1;
  83     m_RelatedFrame = NULL;
  84     m_TitleFormat = wxT("%s");
  85     m_OpenedPage = m_OpenedAnchor = m_OpenedPageTitle = wxEmptyString;
  86     m_Cell = NULL;
  87     m_Parser = new wxHtmlWinParser(this);
  88     m_Parser->SetFS(m_FS);
  89     m_HistoryPos = -1;
  90     m_HistoryOn = TRUE;
  91     m_History = new wxHtmlHistoryArray;
  92     m_Processors = NULL;
  93     m_Style = 0;
  94     SetBorders(10);
  95 }
  96
  97 bool wxHtmlWindow::Create(wxWindow *parent, wxWindowID id,
  98                           const wxPoint& pos, const wxSize& size,
  99                           long style, const wxString& name)
 100 {
 101     if (!wxScrolledWindow::Create(parent, id, pos, size,
 102                                   style | wxVSCROLL | wxHSCROLL, name))
 103         return FALSE;
 104
 105     m_Style = style;
 106     SetPage(wxT("<html><body></body></html>"));
 107     return TRUE;
 108 }
 109
 110
 111 wxHtmlWindow::~wxHtmlWindow()
 112 {
 113     HistoryClear();
 114
 115     if (m_Cell) delete m_Cell;
 116
 117     delete m_Parser;
 118     delete m_FS;
 119     delete m_History;
 120     delete m_Processors;
 121 }
 122
 123
 124
 125 void wxHtmlWindow::SetRelatedFrame(wxFrame* frame, const wxString& format)
 126 {
 127     m_RelatedFrame = frame;
 128     m_TitleFormat = format;
 129 }
 130
 131
 132
 133 void wxHtmlWindow::SetRelatedStatusBar(int bar)
 134 {
 135     m_RelatedStatusBar = bar;
 136 }
 137
 138
 139
 140 void wxHtmlWindow::SetFonts(wxString normal_face, wxString fixed_face, const int *sizes)
 141 {
 142     wxString op = m_OpenedPage;
 143
 144     m_Parser->SetFonts(normal_face, fixed_face, sizes);
 145     // fonts changed => contents invalid, so reload the page:
 146     SetPage(wxT("<html><body></body></html>"));
 147     if (!op.IsEmpty()) LoadPage(op);
 148 }
 149
 150
 151
 152 bool wxHtmlWindow::SetPage(const wxString& source)
 153 {
 154     wxString newsrc(source);
 155
 156     // pass HTML through registered processors:
 157     if (m_Processors || m_GlobalProcessors)
 158     {
 159         wxHtmlProcessorList::Node *nodeL, *nodeG;
 160         int prL, prG;
 161
 162         nodeL = (m_Processors) ? m_Processors->GetFirst() : NULL;
 163         nodeG = (m_GlobalProcessors) ? m_GlobalProcessors->GetFirst() : NULL;
 164
 165         // VS: there are two lists, global and local, both of them sorted by
 166         //     priority. Since we have to go through _both_ lists with
 167         //     decreasing priority, we "merge-sort" the lists on-line by
 168         //     processing that one of the two heads that has higher priority
 169         //     in every iteration
 170         while (nodeL || nodeG)
 171         {
 172             prL = (nodeL) ? nodeL->GetData()->GetPriority() : -1;
 173             prG = (nodeG) ? nodeG->GetData()->GetPriority() : -1;
 174             if (prL > prG)
 175             {
 176                 if (nodeL->GetData()->IsEnabled())
 177                     newsrc = nodeL->GetData()->Process(newsrc);
 178                 nodeL = nodeL->GetNext();
 179             }
 180             else // prL <= prG
 181             {
 182                 if (nodeG->GetData()->IsEnabled())
 183                     newsrc = nodeG->GetData()->Process(newsrc);
 184                 nodeG = nodeG->GetNext();
 185             }
 186         }
 187     }
 188
 189     // ...and run the parser on it:
 190     wxClientDC *dc = new wxClientDC(this);
 191     dc->SetMapMode(wxMM_TEXT);
 192     SetBackgroundColour(wxColour(0xFF, 0xFF, 0xFF));
 193     m_OpenedPage = m_OpenedAnchor = m_OpenedPageTitle = wxEmptyString;
 194     m_Parser->SetDC(dc);
 195     if (m_Cell)
 196     {
 197         delete m_Cell;
 198         m_Cell = NULL;
 199     }
 200     m_Cell = (wxHtmlContainerCell*) m_Parser->Parse(newsrc);
 201     delete dc;
 202     m_Cell->SetIndent(m_Borders, wxHTML_INDENT_ALL, wxHTML_UNITS_PIXELS);
 203     m_Cell->SetAlignHor(wxHTML_ALIGN_CENTER);
 204     CreateLayout();
 205     if (m_tmpCanDrawLocks == 0)
 206         Refresh();
 207     return TRUE;
 208 }
 209
 210 bool wxHtmlWindow::AppendToPage(const wxString& source)
 211 {
 212     return SetPage(*(GetParser()->GetSource()) + source);
 213 }
 214
 215 bool wxHtmlWindow::LoadPage(const wxString& location)
 216 {
 217     wxBusyCursor busyCursor;
 218
 219     wxFSFile *f;
 220     bool rt_val;
 221     bool needs_refresh = FALSE;
 222
 223     m_tmpCanDrawLocks++;
 224     if (m_HistoryOn && (m_HistoryPos != -1))
 225     {
 226         // store scroll position into history item:
 227         int x, y;
 228         GetViewStart(&x, &y);
 229         (*m_History)[m_HistoryPos].SetPos(y);
 230     }
 231
 232     if (location[0] == wxT('#'))
 233     {
 234         // local anchor:
 235         wxString anch = location.Mid(1) /*1 to end*/;
 236         m_tmpCanDrawLocks--;
 237         rt_val = ScrollToAnchor(anch);
 238         m_tmpCanDrawLocks++;
 239     }
 240     else if (location.Find(wxT('#')) != wxNOT_FOUND && location.BeforeFirst(wxT('#')) == m_OpenedPage)
 241     {
 242         wxString anch = location.AfterFirst(wxT('#'));
 243         m_tmpCanDrawLocks--;
 244         rt_val = ScrollToAnchor(anch);
 245         m_tmpCanDrawLocks++;
 246     }
 247     else if (location.Find(wxT('#')) != wxNOT_FOUND &&
 248              (m_FS->GetPath() + location.BeforeFirst(wxT('#'))) == m_OpenedPage)
 249     {
 250         wxString anch = location.AfterFirst(wxT('#'));
 251         m_tmpCanDrawLocks--;
 252         rt_val = ScrollToAnchor(anch);
 253         m_tmpCanDrawLocks++;
 254     }
 255
 256     else
 257     {
 258         needs_refresh = TRUE;
 259         // load&display it:
 260         if (m_RelatedStatusBar != -1)
 261         {
 262             m_RelatedFrame->SetStatusText(_("Connecting..."), m_RelatedStatusBar);
 263             Refresh(FALSE);
 264         }
 265
 266         if ( !m_Parser->CanOpenURL(location) )
 267         {
 268             wxLogError(_("Access denied to document '%s'!"), location.c_str());
 269             return FALSE;
 270         }
 271
 272         f = m_FS->OpenFile(location);
 273
 274         if (f == NULL)
 275         {
 276             wxLogError(_("Unable to open requested HTML document: %s"), location.c_str());
 277             m_tmpCanDrawLocks--;
 278             return FALSE;
 279         }
 280
 281         else
 282         {
 283             wxNode *node;
 284             wxString src = wxEmptyString;
 285
 286             if (m_RelatedStatusBar != -1)
 287             {
 288                 wxString msg = _("Loading : ") + location;
 289                 m_RelatedFrame->SetStatusText(msg, m_RelatedStatusBar);
 290                 Refresh(FALSE);
 291             }
 292
 293             node = m_Filters.GetFirst();
 294             while (node)
 295             {
 296                 wxHtmlFilter *h = (wxHtmlFilter*) node->GetData();
 297                 if (h->CanRead(*f))
 298                 {
 299                     src = h->ReadFile(*f);
 300                     break;
 301                 }
 302                 node = node->GetNext();
 303             }
 304             if (src == wxEmptyString)
 305             {
 306                 if (m_DefaultFilter == NULL) m_DefaultFilter = GetDefaultFilter();
 307                 src = m_DefaultFilter->ReadFile(*f);
 308             }
 309
 310             m_FS->ChangePathTo(f->GetLocation());
 311             rt_val = SetPage(src);
 312             m_OpenedPage = f->GetLocation();
 313             if (f->GetAnchor() != wxEmptyString)
 314             {
 315                 ScrollToAnchor(f->GetAnchor());
 316             }
 317
 318             delete f;
 319
 320             if (m_RelatedStatusBar != -1) m_RelatedFrame->SetStatusText(_("Done"), m_RelatedStatusBar);
 321         }
 322     }
 323
 324     if (m_HistoryOn) // add this page to history there:
 325     {
 326         int c = m_History->GetCount() - (m_HistoryPos + 1);
 327
 328         if (m_HistoryPos < 0 ||
 329             (*m_History)[m_HistoryPos].GetPage() != m_OpenedPage ||
 330             (*m_History)[m_HistoryPos].GetAnchor() != m_OpenedAnchor)
 331         {
 332             m_HistoryPos++;
 333             for (int i = 0; i < c; i++)
 334                 m_History->RemoveAt(m_HistoryPos);
 335             m_History->Add(new wxHtmlHistoryItem(m_OpenedPage, m_OpenedAnchor));
 336         }
 337     }
 338
 339     if (m_OpenedPageTitle == wxEmptyString)
 340         OnSetTitle(wxFileNameFromPath(m_OpenedPage));
 341
 342     if (needs_refresh)
 343     {
 344         m_tmpCanDrawLocks--;
 345         Refresh();
 346     }
 347     else
 348         m_tmpCanDrawLocks--;
 349
 350     return rt_val;
 351 }
 352
 353
 354
 355 bool wxHtmlWindow::ScrollToAnchor(const wxString& anchor)
 356 {
 357     const wxHtmlCell *c = m_Cell->Find(wxHTML_COND_ISANCHOR, &anchor);
 358     if (!c)
 359     {
 360         wxLogWarning(_("HTML anchor %s does not exist."), anchor.c_str());
 361         return FALSE;
 362     }
 363     else
 364     {
 365         int y;
 366
 367         for (y = 0; c != NULL; c = c->GetParent()) y += c->GetPosY();
 368         Scroll(-1, y / wxHTML_SCROLL_STEP);
 369         m_OpenedAnchor = anchor;
 370         return TRUE;
 371     }
 372 }
 373
 374
 375 void wxHtmlWindow::OnSetTitle(const wxString& title)
 376 {
 377     if (m_RelatedFrame)
 378     {
 379         wxString tit;
 380         tit.Printf(m_TitleFormat, title.c_str());
 381         m_RelatedFrame->SetTitle(tit);
 382     }
 383     m_OpenedPageTitle = title;
 384 }
 385
 386
 387
 388
 389
 390 void wxHtmlWindow::CreateLayout()
 391 {
 392     int ClientWidth, ClientHeight;
 393
 394     if (!m_Cell) return;
 395
 396     if (m_Style & wxHW_SCROLLBAR_NEVER)
 397     {
 398         SetScrollbars(wxHTML_SCROLL_STEP, 1, m_Cell->GetWidth() / wxHTML_SCROLL_STEP, 0); // always off
 399         GetClientSize(&ClientWidth, &ClientHeight);
 400         m_Cell->Layout(ClientWidth);
 401     }
 402
 403     else {
 404         GetClientSize(&ClientWidth, &ClientHeight);
 405         m_Cell->Layout(ClientWidth);
 406         if (ClientHeight < m_Cell->GetHeight() + GetCharHeight())
 407         {
 408             SetScrollbars(
 409                   wxHTML_SCROLL_STEP, wxHTML_SCROLL_STEP,
 410                   m_Cell->GetWidth() / wxHTML_SCROLL_STEP,
 411                   (m_Cell->GetHeight() + GetCharHeight()) / wxHTML_SCROLL_STEP
 412                   /*cheat: top-level frag is always container*/);
 413         }
 414         else /* we fit into window, no need for scrollbars */
 415         {
 416             SetScrollbars(wxHTML_SCROLL_STEP, 1, m_Cell->GetWidth() / wxHTML_SCROLL_STEP, 0); // disable...
 417             GetClientSize(&ClientWidth, &ClientHeight);
 418             m_Cell->Layout(ClientWidth); // ...and relayout
 419         }
 420     }
 421 }
 422
 423
 424
 425 void wxHtmlWindow::ReadCustomization(wxConfigBase *cfg, wxString path)
 426 {
 427     wxString oldpath;
 428     wxString tmp;
 429     int p_fontsizes[7];
 430     wxString p_fff, p_ffn;
 431
 432     if (path != wxEmptyString)
 433     {
 434         oldpath = cfg->GetPath();
 435         cfg->SetPath(path);
 436     }
 437
 438     m_Borders = cfg->Read(wxT("wxHtmlWindow/Borders"), m_Borders);
 439     p_fff = cfg->Read(wxT("wxHtmlWindow/FontFaceFixed"), m_Parser->m_FontFaceFixed);
 440     p_ffn = cfg->Read(wxT("wxHtmlWindow/FontFaceNormal"), m_Parser->m_FontFaceNormal);
 441     for (int i = 0; i < 7; i++)
 442     {
 443         tmp.Printf(wxT("wxHtmlWindow/FontsSize%i"), i);
 444         p_fontsizes[i] = cfg->Read(tmp, m_Parser->m_FontsSizes[i]);
 445     }
 446     SetFonts(p_ffn, p_fff, p_fontsizes);
 447
 448     if (path != wxEmptyString)
 449         cfg->SetPath(oldpath);
 450 }
 451
 452
 453
 454 void wxHtmlWindow::WriteCustomization(wxConfigBase *cfg, wxString path)
 455 {
 456     wxString oldpath;
 457     wxString tmp;
 458
 459     if (path != wxEmptyString)
 460     {
 461         oldpath = cfg->GetPath();
 462         cfg->SetPath(path);
 463     }
 464
 465     cfg->Write(wxT("wxHtmlWindow/Borders"), (long) m_Borders);
 466     cfg->Write(wxT("wxHtmlWindow/FontFaceFixed"), m_Parser->m_FontFaceFixed);
 467     cfg->Write(wxT("wxHtmlWindow/FontFaceNormal"), m_Parser->m_FontFaceNormal);
 468     for (int i = 0; i < 7; i++)
 469     {
 470         tmp.Printf(wxT("wxHtmlWindow/FontsSize%i"), i);
 471         cfg->Write(tmp, (long) m_Parser->m_FontsSizes[i]);
 472     }
 473
 474     if (path != wxEmptyString)
 475         cfg->SetPath(oldpath);
 476 }
 477
 478
 479
 480 bool wxHtmlWindow::HistoryBack()
 481 {
 482     wxString a, l;
 483
 484     if (m_HistoryPos < 1) return FALSE;
 485
 486     // store scroll position into history item:
 487     int x, y;
 488     GetViewStart(&x, &y);
 489     (*m_History)[m_HistoryPos].SetPos(y);
 490
 491     // go to previous position:
 492     m_HistoryPos--;
 493
 494     l = (*m_History)[m_HistoryPos].GetPage();
 495     a = (*m_History)[m_HistoryPos].GetAnchor();
 496     m_HistoryOn = FALSE;
 497     m_tmpCanDrawLocks++;
 498     if (a == wxEmptyString) LoadPage(l);
 499     else LoadPage(l + wxT("#") + a);
 500     m_HistoryOn = TRUE;
 501     m_tmpCanDrawLocks--;
 502     Scroll(0, (*m_History)[m_HistoryPos].GetPos());
 503     Refresh();
 504     return TRUE;
 505 }
 506
 507 bool wxHtmlWindow::HistoryCanBack()
 508 {
 509     if (m_HistoryPos < 1) return FALSE;
 510     return TRUE ;
 511 }
 512
 513
 514 bool wxHtmlWindow::HistoryForward()
 515 {
 516     wxString a, l;
 517
 518     if (m_HistoryPos == -1) return FALSE;
 519     if (m_HistoryPos >= (int)m_History->GetCount() - 1)return FALSE;
 520
 521     m_OpenedPage = wxEmptyString; // this will disable adding new entry into history in LoadPage()
 522
 523     m_HistoryPos++;
 524     l = (*m_History)[m_HistoryPos].GetPage();
 525     a = (*m_History)[m_HistoryPos].GetAnchor();
 526     m_HistoryOn = FALSE;
 527     m_tmpCanDrawLocks++;
 528     if (a == wxEmptyString) LoadPage(l);
 529     else LoadPage(l + wxT("#") + a);
 530     m_HistoryOn = TRUE;
 531     m_tmpCanDrawLocks--;
 532     Scroll(0, (*m_History)[m_HistoryPos].GetPos());
 533     Refresh();
 534     return TRUE;
 535 }
 536
 537 bool wxHtmlWindow::HistoryCanForward()
 538 {
 539     if (m_HistoryPos == -1) return FALSE;
 540     if (m_HistoryPos >= (int)m_History->GetCount() - 1)return FALSE;
 541     return TRUE ;
 542 }
 543
 544
 545 void wxHtmlWindow::HistoryClear()
 546 {
 547     m_History->Empty();
 548     m_HistoryPos = -1;
 549 }
 550
 551 void wxHtmlWindow::AddProcessor(wxHtmlProcessor *processor)
 552 {
 553     if (!m_Processors)
 554     {
 555         m_Processors = new wxHtmlProcessorList;
 556         m_Processors->DeleteContents(TRUE);
 557     }
 558     wxHtmlProcessorList::Node *node;
 559
 560     for (node = m_Processors->GetFirst(); node; node = node->GetNext())
 561     {
 562         if (processor->GetPriority() > node->GetData()->GetPriority())
 563         {
 564             m_Processors->Insert(node, processor);
 565             return;
 566         }
 567     }
 568     m_Processors->Append(processor);
 569 }
 570
 571 /*static */ void wxHtmlWindow::AddGlobalProcessor(wxHtmlProcessor *processor)
 572 {
 573     if (!m_GlobalProcessors)
 574     {
 575         m_GlobalProcessors = new wxHtmlProcessorList;
 576         m_GlobalProcessors->DeleteContents(TRUE);
 577     }
 578     wxHtmlProcessorList::Node *node;
 579
 580     for (node = m_GlobalProcessors->GetFirst(); node; node = node->GetNext())
 581     {
 582         if (processor->GetPriority() > node->GetData()->GetPriority())
 583         {
 584             m_GlobalProcessors->Insert(node, processor);
 585             return;
 586         }
 587     }
 588     m_GlobalProcessors->Append(processor);
 589 }
 590
 591
 592
 593 wxList wxHtmlWindow::m_Filters;
 594 wxHtmlFilter *wxHtmlWindow::m_DefaultFilter = NULL;
 595 wxCursor *wxHtmlWindow::s_cur_hand = NULL;
 596 wxCursor *wxHtmlWindow::s_cur_arrow = NULL;
 597 wxHtmlProcessorList *wxHtmlWindow::m_GlobalProcessors = NULL;
 598
 599 void wxHtmlWindow::CleanUpStatics()
 600 {
 601     delete m_DefaultFilter;
 602     m_DefaultFilter = NULL;
 603     m_Filters.DeleteContents(TRUE);
 604     m_Filters.Clear();
 605     delete m_GlobalProcessors;
 606     m_GlobalProcessors = NULL;
 607     delete s_cur_hand;
 608     delete s_cur_arrow;
 609 }
 610
 611
 612
 613 void wxHtmlWindow::AddFilter(wxHtmlFilter *filter)
 614 {
 615     m_Filters.Append(filter);
 616 }
 617
 618
 619
 620
 621 void wxHtmlWindow::OnLinkClicked(const wxHtmlLinkInfo& link)
 622 {
 623     LoadPage(link.GetHref());
 624 }
 625
 626 void wxHtmlWindow::OnCellClicked(wxHtmlCell *cell,
 627                                  wxCoord x, wxCoord y,
 628                                  const wxMouseEvent& event)
 629 {
 630     wxCHECK_RET( cell, _T("can't be called with NULL cell") );
 631
 632     cell->OnMouseClick(this, x, y, event);
 633 }
 634
 635 void wxHtmlWindow::OnCellMouseHover(wxHtmlCell * WXUNUSED(cell),
 636                                     wxCoord WXUNUSED(x), wxCoord WXUNUSED(y))
 637 {
 638     // do nothing here
 639 }
 640
 641 void wxHtmlWindow::OnDraw(wxDC& dc)
 642 {
 643     if (m_tmpCanDrawLocks > 0 || m_Cell == NULL) return;
 644
 645     int x, y;
 646     wxRect rect = GetUpdateRegion().GetBox();
 647
 648     dc.SetMapMode(wxMM_TEXT);
 649     dc.SetBackgroundMode(wxTRANSPARENT);
 650     GetViewStart(&x, &y);
 651
 652     m_Cell->Draw(dc, 0, 0,
 653                  y * wxHTML_SCROLL_STEP + rect.GetTop(),
 654                  y * wxHTML_SCROLL_STEP + rect.GetBottom());
 655 }
 656
 657
 658
 659
 660 void wxHtmlWindow::OnSize(wxSizeEvent& event)
 661 {
 662     wxScrolledWindow::OnSize(event);
 663     CreateLayout();
 664     Refresh();
 665 }
 666
 667
 668 void wxHtmlWindow::OnMouseEvent(wxMouseEvent& event)
 669 {
 670     m_tmpMouseMoved = TRUE;
 671
 672     if (event.ButtonDown())
 673     {
 674         if ( m_Cell )
 675         {
 676             int sx, sy;
 677             GetViewStart(&sx, &sy);
 678             sx *= wxHTML_SCROLL_STEP;
 679             sy *= wxHTML_SCROLL_STEP;
 680
 681             wxPoint pos = event.GetPosition();
 682             pos.x += sx;
 683             pos.y += sy;
 684
 685             wxHtmlCell *cell = m_Cell->FindCellByPos(pos.x, pos.y);
 686
 687             // VZ: is it possible that we don't find anything at all?
 688             // VS: yes. FindCellByPos returns terminal cell and
 689             //     containers may have empty borders
 690             if ( cell )
 691                 OnCellClicked(cell, pos.x, pos.y, event);
 692         }
 693     }
 694 }
 695
 696
 697
 698 void wxHtmlWindow::OnIdle(wxIdleEvent& WXUNUSED(event))
 699 {
 700     if (s_cur_hand == NULL)
 701     {
 702         s_cur_hand = new wxCursor(wxCURSOR_HAND);
 703         s_cur_arrow = new wxCursor(wxCURSOR_ARROW);
 704     }
 705
 706     if (m_tmpMouseMoved && (m_Cell != NULL))
 707     {
 708         int sx, sy;
 709         GetViewStart(&sx, &sy);
 710         sx *= wxHTML_SCROLL_STEP;
 711         sy *= wxHTML_SCROLL_STEP;
 712
 713         int x, y;
 714         wxGetMousePosition(&x, &y);
 715         ScreenToClient(&x, &y);
 716         x += sx;
 717         y += sy;
 718
 719         wxHtmlCell *cell = m_Cell->FindCellByPos(x, y);
 720         if ( cell != m_tmpLastCell )
 721         {
 722             wxHtmlLinkInfo *lnk = cell ? cell->GetLink(x, y) : NULL;
 723
 724             if (lnk != m_tmpLastLink)
 725             {
 726                 if (lnk == NULL)
 727                 {
 728                     SetCursor(*s_cur_arrow);
 729                     if (m_RelatedStatusBar != -1)
 730                         m_RelatedFrame->SetStatusText(wxEmptyString, m_RelatedStatusBar);
 731                 }
 732                 else
 733                 {
 734                     SetCursor(*s_cur_hand);
 735                     if (m_RelatedStatusBar != -1)
 736                         m_RelatedFrame->SetStatusText(lnk->GetHref(), m_RelatedStatusBar);
 737                 }
 738                 m_tmpLastLink = lnk;
 739             }
 740
 741             m_tmpLastCell = cell;
 742         }
 743         else // mouse moved but stayed in the same cell
 744         {
 745             if ( cell )
 746                 OnCellMouseHover(cell, x, y);
 747         }
 748
 749         m_tmpMouseMoved = FALSE;
 750     }
 751 }
 752
 753
 754 IMPLEMENT_ABSTRACT_CLASS(wxHtmlProcessor,wxObject)
 755
 756 IMPLEMENT_DYNAMIC_CLASS(wxHtmlWindow,wxScrolledWindow)
 757
 758 BEGIN_EVENT_TABLE(wxHtmlWindow, wxScrolledWindow)
 759     EVT_SIZE(wxHtmlWindow::OnSize)
 760     EVT_LEFT_DOWN(wxHtmlWindow::OnMouseEvent)
 761     EVT_RIGHT_DOWN(wxHtmlWindow::OnMouseEvent)
 762     EVT_MOTION(wxHtmlWindow::OnMouseEvent)
 763     EVT_IDLE(wxHtmlWindow::OnIdle)
 764 END_EVENT_TABLE()
 765
 766
 767
 768
 769
 770 // A module to allow initialization/cleanup
 771 // without calling these functions from app.cpp or from
 772 // the user's application.
 773
 774 class wxHtmlWinModule: public wxModule
 775 {
 776 DECLARE_DYNAMIC_CLASS(wxHtmlWinModule)
 777 public:
 778     wxHtmlWinModule() : wxModule() {}
 779     bool OnInit() { return TRUE; }
 780     void OnExit() { wxHtmlWindow::CleanUpStatics(); }
 781 };
 782
 783 IMPLEMENT_DYNAMIC_CLASS(wxHtmlWinModule, wxModule)
 784
 785
 786 // This hack forces the linker to always link in m_* files
 787 // (wxHTML doesn't work without handlers from these files)
 788 #include "wx/html/forcelnk.h"
 789 FORCE_WXHTML_MODULES()
 790
 791 #endif