src/html/htmlcell.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/html/htmlcell.cpp
   3 // Purpose:     wxHtmlCell - basic element of HTML output
   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/dynarray.h"
  20     #include "wx/brush.h"
  21     #include "wx/colour.h"
  22     #include "wx/dc.h"
  23     #include "wx/settings.h"
  24     #include "wx/module.h"
  25     #include "wx/wxcrtvararg.h"
  26 #endif
  27
  28 #include "wx/html/htmlcell.h"
  29 #include "wx/html/htmlwin.h"
  30
  31 #include <stdlib.h>
  32
  33 //-----------------------------------------------------------------------------
  34 // Helper classes
  35 //-----------------------------------------------------------------------------
  36
  37 void wxHtmlSelection::Set(const wxPoint& fromPos, const wxHtmlCell *fromCell,
  38                           const wxPoint& toPos, const wxHtmlCell *toCell)
  39 {
  40     m_fromCell = fromCell;
  41     m_toCell = toCell;
  42     m_fromPos = fromPos;
  43     m_toPos = toPos;
  44 }
  45
  46 void wxHtmlSelection::Set(const wxHtmlCell *fromCell, const wxHtmlCell *toCell)
  47 {
  48     wxPoint p1 = fromCell ? fromCell->GetAbsPos() : wxDefaultPosition;
  49     wxPoint p2 = toCell ? toCell->GetAbsPos() : wxDefaultPosition;
  50     if ( toCell )
  51     {
  52         p2.x += toCell->GetWidth();
  53         p2.y += toCell->GetHeight();
  54     }
  55     Set(p1, fromCell, p2, toCell);
  56 }
  57
  58 wxColour
  59 wxDefaultHtmlRenderingStyle::
  60 GetSelectedTextColour(const wxColour& WXUNUSED(clr))
  61 {
  62     return wxSystemSettings::GetColour(wxSYS_COLOUR_HIGHLIGHTTEXT);
  63 }
  64
  65 wxColour
  66 wxDefaultHtmlRenderingStyle::
  67 GetSelectedTextBgColour(const wxColour& WXUNUSED(clr))
  68 {
  69     return wxSystemSettings::GetColour(wxSYS_COLOUR_HIGHLIGHT);
  70 }
  71
  72
  73 //-----------------------------------------------------------------------------
  74 // wxHtmlCell
  75 //-----------------------------------------------------------------------------
  76
  77 IMPLEMENT_ABSTRACT_CLASS(wxHtmlCell, wxObject)
  78
  79 wxHtmlCell::wxHtmlCell() : wxObject()
  80 {
  81     m_Next = NULL;
  82     m_Parent = NULL;
  83     m_Width = m_Height = m_Descent = 0;
  84     m_ScriptMode = wxHTML_SCRIPT_NORMAL;        // <sub> or <sup> mode
  85     m_ScriptBaseline = 0;                       // <sub> or <sup> baseline
  86     m_CanLiveOnPagebreak = true;
  87     m_Link = NULL;
  88 }
  89
  90 wxHtmlCell::~wxHtmlCell()
  91 {
  92     delete m_Link;
  93 }
  94
  95 // Update the descent value when whe are in a <sub> or <sup>.
  96 // prevbase is the parent base
  97 void wxHtmlCell::SetScriptMode(wxHtmlScriptMode mode, long previousBase)
  98 {
  99     m_ScriptMode = mode;
 100
 101     if (mode == wxHTML_SCRIPT_SUP)
 102         m_ScriptBaseline = previousBase - (m_Height + 1) / 2;
 103     else if (mode == wxHTML_SCRIPT_SUB)
 104         m_ScriptBaseline = previousBase + (m_Height + 1) / 6;
 105     else
 106         m_ScriptBaseline = 0;
 107
 108     m_Descent += m_ScriptBaseline;
 109 }
 110
 111 #if WXWIN_COMPATIBILITY_2_6
 112
 113 struct wxHtmlCellOnMouseClickCompatHelper;
 114
 115 static wxHtmlCellOnMouseClickCompatHelper *gs_helperOnMouseClick = NULL;
 116
 117 // helper for routing calls to new ProcessMouseClick() method to deprecated
 118 // OnMouseClick() method
 119 struct wxHtmlCellOnMouseClickCompatHelper
 120 {
 121     wxHtmlCellOnMouseClickCompatHelper(wxHtmlWindowInterface *window_,
 122                                        const wxPoint& pos_,
 123                                        const wxMouseEvent& event_)
 124         : window(window_), pos(pos_), event(event_), retval(false)
 125     {
 126     }
 127
 128     bool CallOnMouseClick(wxHtmlCell *cell)
 129     {
 130         wxHtmlCellOnMouseClickCompatHelper *oldHelper = gs_helperOnMouseClick;
 131         gs_helperOnMouseClick = this;
 132         cell->OnMouseClick
 133               (
 134                 window ? window->GetHTMLWindow() : NULL,
 135                 pos.x, pos.y,
 136                 event
 137               );
 138         gs_helperOnMouseClick = oldHelper;
 139         return retval;
 140     }
 141
 142     wxHtmlWindowInterface *window;
 143     const wxPoint& pos;
 144     const wxMouseEvent& event;
 145     bool retval;
 146 };
 147 #endif // WXWIN_COMPATIBILITY_2_6
 148
 149 bool wxHtmlCell::ProcessMouseClick(wxHtmlWindowInterface *window,
 150                                    const wxPoint& pos,
 151                                    const wxMouseEvent& event)
 152 {
 153     wxCHECK_MSG( window, false, _T("window interface must be provided") );
 154
 155 #if WXWIN_COMPATIBILITY_2_6
 156     // NB: this hack puts the body of ProcessMouseClick() into OnMouseClick()
 157     //     (for which it has to pass the arguments and return value via a
 158     //     helper variable because these two methods have different
 159     //     signatures), so that old code overriding OnMouseClick will continue
 160     //     to work
 161     wxHtmlCellOnMouseClickCompatHelper compat(window, pos, event);
 162     return compat.CallOnMouseClick(this);
 163 }
 164
 165 void wxHtmlCell::OnMouseClick(wxWindow *, int, int, const wxMouseEvent& event)
 166 {
 167     wxCHECK_RET( gs_helperOnMouseClick, _T("unexpected call to OnMouseClick") );
 168     wxHtmlWindowInterface *window = gs_helperOnMouseClick->window;
 169     const wxPoint& pos = gs_helperOnMouseClick->pos;
 170 #endif // WXWIN_COMPATIBILITY_2_6
 171
 172     wxHtmlLinkInfo *lnk = GetLink(pos.x, pos.y);
 173     bool retval = false;
 174
 175     if (lnk)
 176     {
 177         wxHtmlLinkInfo lnk2(*lnk);
 178         lnk2.SetEvent(&event);
 179         lnk2.SetHtmlCell(this);
 180
 181         window->OnHTMLLinkClicked(lnk2);
 182         retval = true;
 183     }
 184
 185 #if WXWIN_COMPATIBILITY_2_6
 186     gs_helperOnMouseClick->retval = retval;
 187 #else
 188     return retval;
 189 #endif // WXWIN_COMPATIBILITY_2_6
 190 }
 191
 192 #if WXWIN_COMPATIBILITY_2_6
 193 wxCursor wxHtmlCell::GetCursor() const
 194 {
 195     return wxNullCursor;
 196 }
 197 #endif // WXWIN_COMPATIBILITY_2_6
 198
 199 wxCursor wxHtmlCell::GetMouseCursor(wxHtmlWindowInterface *window) const
 200 {
 201 #if WXWIN_COMPATIBILITY_2_6
 202     // NB: Older versions of wx used GetCursor() virtual method in place of
 203     //     GetMouseCursor(interface). This code ensures that user code that
 204     //     overriden GetCursor() continues to work. The trick is that the base
 205     //     wxHtmlCell::GetCursor() method simply returns wxNullCursor, so we
 206     //     know that GetCursor() was overriden iff it returns valid cursor.
 207     wxCursor cur = GetCursor();
 208     if (cur.Ok())
 209         return cur;
 210 #endif // WXWIN_COMPATIBILITY_2_6
 211
 212     if ( GetLink() )
 213     {
 214         return window->GetHTMLCursor(wxHtmlWindowInterface::HTMLCursor_Link);
 215     }
 216     else
 217     {
 218         return window->GetHTMLCursor(wxHtmlWindowInterface::HTMLCursor_Default);
 219     }
 220 }
 221
 222
 223 bool wxHtmlCell::AdjustPagebreak(int *pagebreak,
 224                                  wxArrayInt& WXUNUSED(known_pagebreaks)) const
 225 {
 226     if ((!m_CanLiveOnPagebreak) &&
 227                 m_PosY < *pagebreak && m_PosY + m_Height > *pagebreak)
 228     {
 229         *pagebreak = m_PosY;
 230         return true;
 231     }
 232
 233     return false;
 234 }
 235
 236
 237
 238 void wxHtmlCell::SetLink(const wxHtmlLinkInfo& link)
 239 {
 240     if (m_Link) delete m_Link;
 241     m_Link = NULL;
 242     if (link.GetHref() != wxEmptyString)
 243         m_Link = new wxHtmlLinkInfo(link);
 244 }
 245
 246
 247 void wxHtmlCell::Layout(int WXUNUSED(w))
 248 {
 249     SetPos(0, 0);
 250 }
 251
 252
 253
 254 const wxHtmlCell* wxHtmlCell::Find(int WXUNUSED(condition), const void* WXUNUSED(param)) const
 255 {
 256     return NULL;
 257 }
 258
 259
 260 wxHtmlCell *wxHtmlCell::FindCellByPos(wxCoord x, wxCoord y,
 261                                       unsigned flags) const
 262 {
 263     if ( x >= 0 && x < m_Width && y >= 0 && y < m_Height )
 264     {
 265         return wxConstCast(this, wxHtmlCell);
 266     }
 267     else
 268     {
 269         if ((flags & wxHTML_FIND_NEAREST_AFTER) &&
 270                 (y < 0 || (y < 0+m_Height && x < 0+m_Width)))
 271             return wxConstCast(this, wxHtmlCell);
 272         else if ((flags & wxHTML_FIND_NEAREST_BEFORE) &&
 273                 (y >= 0+m_Height || (y >= 0 && x >= 0)))
 274             return wxConstCast(this, wxHtmlCell);
 275         else
 276             return NULL;
 277     }
 278 }
 279
 280
 281 wxPoint wxHtmlCell::GetAbsPos(wxHtmlCell *rootCell) const
 282 {
 283     wxPoint p(m_PosX, m_PosY);
 284     for (wxHtmlCell *parent = m_Parent; parent && parent != rootCell;
 285          parent = parent->m_Parent)
 286     {
 287         p.x += parent->m_PosX;
 288         p.y += parent->m_PosY;
 289     }
 290     return p;
 291 }
 292
 293 wxHtmlCell *wxHtmlCell::GetRootCell() const
 294 {
 295     wxHtmlCell *c = wxConstCast(this, wxHtmlCell);
 296     while ( c->m_Parent )
 297         c = c->m_Parent;
 298     return c;
 299 }
 300
 301 unsigned wxHtmlCell::GetDepth() const
 302 {
 303     unsigned d = 0;
 304     for (wxHtmlCell *p = m_Parent; p; p = p->m_Parent)
 305         d++;
 306     return d;
 307 }
 308
 309 bool wxHtmlCell::IsBefore(wxHtmlCell *cell) const
 310 {
 311     const wxHtmlCell *c1 = this;
 312     const wxHtmlCell *c2 = cell;
 313     unsigned d1 = GetDepth();
 314     unsigned d2 = cell->GetDepth();
 315
 316     if ( d1 > d2 )
 317         for (; d1 != d2; d1-- )
 318             c1 = c1->m_Parent;
 319     else if ( d1 < d2 )
 320         for (; d1 != d2; d2-- )
 321             c2 = c2->m_Parent;
 322
 323     if ( cell == this )
 324         return true;
 325
 326     while ( c1 && c2 )
 327     {
 328         if ( c1->m_Parent == c2->m_Parent )
 329         {
 330             while ( c1 )
 331             {
 332                 if ( c1 == c2 )
 333                     return true;
 334                 c1 = c1->GetNext();
 335             }
 336             return false;
 337         }
 338         else
 339         {
 340             c1 = c1->m_Parent;
 341             c2 = c2->m_Parent;
 342         }
 343     }
 344
 345     wxFAIL_MSG(_T("Cells are in different trees"));
 346     return false;
 347 }
 348
 349
 350 //-----------------------------------------------------------------------------
 351 // wxHtmlWordCell
 352 //-----------------------------------------------------------------------------
 353
 354 IMPLEMENT_ABSTRACT_CLASS(wxHtmlWordCell, wxHtmlCell)
 355
 356 wxHtmlWordCell::wxHtmlWordCell(const wxString& word, const wxDC& dc) : wxHtmlCell()
 357 {
 358     m_Word = word;
 359     dc.GetTextExtent(m_Word, &m_Width, &m_Height, &m_Descent);
 360     SetCanLiveOnPagebreak(false);
 361     m_allowLinebreak = true;
 362 }
 363
 364 void wxHtmlWordCell::SetPreviousWord(wxHtmlWordCell *cell)
 365 {
 366     if ( cell && m_Parent == cell->m_Parent &&
 367          !wxIsspace(cell->m_Word.Last()) && !wxIsspace(m_Word[0u]) )
 368     {
 369         m_allowLinebreak = false;
 370     }
 371 }
 372
 373 // Splits m_Word into up to three parts according to selection, returns
 374 // substring before, in and after selection and the points (in relative coords)
 375 // where s2 and s3 start:
 376 void wxHtmlWordCell::Split(const wxDC& dc,
 377                            const wxPoint& selFrom, const wxPoint& selTo,
 378                            unsigned& pos1, unsigned& pos2) const
 379 {
 380     wxPoint pt1 = (selFrom == wxDefaultPosition) ?
 381                    wxDefaultPosition : selFrom - GetAbsPos();
 382     wxPoint pt2 = (selTo == wxDefaultPosition) ?
 383                    wxPoint(m_Width, wxDefaultCoord) : selTo - GetAbsPos();
 384
 385     unsigned len = m_Word.length();
 386     unsigned i = 0;
 387     pos1 = 0;
 388
 389     // adjust for cases when the start/end position is completely
 390     // outside the cell:
 391     if ( pt1.y < 0 )
 392         pt1.x = 0;
 393     if ( pt2.y >= m_Height )
 394         pt2.x = m_Width;
 395
 396     // before selection:
 397 #ifdef __WXMAC__
 398     // implementation using PartialExtents to support fractional widths
 399     wxArrayInt widths ;
 400     dc.GetPartialTextExtents(m_Word,widths) ;
 401     while( i < len && pt1.x >= widths[i] )
 402         i++ ;
 403 #else // __WXMAC__
 404     wxCoord charW, charH;
 405     while ( pt1.x > 0 && i < len )
 406     {
 407         dc.GetTextExtent(m_Word[i], &charW, &charH);
 408         pt1.x -= charW;
 409         if ( pt1.x >= 0 )
 410         {
 411             pos1 += charW;
 412             i++;
 413         }
 414     }
 415 #endif // __WXMAC__/!__WXMAC__
 416
 417     // in selection:
 418     unsigned j = i;
 419 #ifdef __WXMAC__
 420     while( j < len && pt2.x >= widths[j] )
 421         j++ ;
 422 #else // __WXMAC__
 423     pos2 = pos1;
 424     pt2.x -= pos2;
 425     while ( pt2.x > 0 && j < len )
 426     {
 427         dc.GetTextExtent(m_Word[j], &charW, &charH);
 428         pt2.x -= charW;
 429         if ( pt2.x >= 0 )
 430         {
 431             pos2 += charW;
 432             j++;
 433         }
 434     }
 435 #endif // __WXMAC__/!__WXMAC__
 436
 437     pos1 = i;
 438     pos2 = j;
 439 }
 440
 441 void wxHtmlWordCell::SetSelectionPrivPos(const wxDC& dc, wxHtmlSelection *s) const
 442 {
 443     unsigned p1, p2;
 444
 445     Split(dc,
 446           this == s->GetFromCell() ? s->GetFromPos() : wxDefaultPosition,
 447           this == s->GetToCell() ? s->GetToPos() : wxDefaultPosition,
 448           p1, p2);
 449
 450     wxPoint p(0, m_Word.length());
 451
 452     if ( this == s->GetFromCell() )
 453         p.x = p1; // selection starts here
 454     if ( this == s->GetToCell() )
 455         p.y = p2; // selection ends here
 456
 457     if ( this == s->GetFromCell() )
 458         s->SetFromPrivPos(p);
 459     if ( this == s->GetToCell() )
 460         s->SetToPrivPos(p);
 461 }
 462
 463
 464 static void SwitchSelState(wxDC& dc, wxHtmlRenderingInfo& info,
 465                            bool toSelection)
 466 {
 467     wxColour fg = info.GetState().GetFgColour();
 468     wxColour bg = info.GetState().GetBgColour();
 469
 470     if ( toSelection )
 471     {
 472         dc.SetBackgroundMode(wxSOLID);
 473         dc.SetTextForeground(info.GetStyle().GetSelectedTextColour(fg));
 474         dc.SetTextBackground(info.GetStyle().GetSelectedTextBgColour(bg));
 475         dc.SetBackground(wxBrush(info.GetStyle().GetSelectedTextBgColour(bg),
 476                                  wxSOLID));
 477     }
 478     else
 479     {
 480         dc.SetBackgroundMode(wxTRANSPARENT);
 481         dc.SetTextForeground(fg);
 482         dc.SetTextBackground(bg);
 483         dc.SetBackground(wxBrush(bg, wxSOLID));
 484     }
 485 }
 486
 487
 488 void wxHtmlWordCell::Draw(wxDC& dc, int x, int y,
 489                           int WXUNUSED(view_y1), int WXUNUSED(view_y2),
 490                           wxHtmlRenderingInfo& info)
 491 {
 492 #if 0 // useful for debugging
 493     dc.SetPen(*wxBLACK_PEN);
 494     dc.DrawRectangle(x+m_PosX,y+m_PosY,m_Width /* VZ: +1? */ ,m_Height);
 495 #endif
 496
 497     bool drawSelectionAfterCell = false;
 498
 499     if ( info.GetState().GetSelectionState() == wxHTML_SEL_CHANGING )
 500     {
 501         // Selection changing, we must draw the word piecewise:
 502         wxHtmlSelection *s = info.GetSelection();
 503         wxString txt;
 504         int w, h;
 505         int ofs = 0;
 506
 507         wxPoint priv = (this == s->GetFromCell()) ?
 508                            s->GetFromPrivPos() : s->GetToPrivPos();
 509
 510         // NB: this is quite a hack: in order to compute selection boundaries
 511         //     (in word's characters) we must know current font, which is only
 512         //     possible inside rendering code. Therefore we update the
 513         //     information here and store it in wxHtmlSelection so that
 514         //     ConvertToText can use it later:
 515         if ( priv == wxDefaultPosition )
 516         {
 517             SetSelectionPrivPos(dc, s);
 518             priv = (this == s->GetFromCell()) ?
 519                     s->GetFromPrivPos() : s->GetToPrivPos();
 520         }
 521
 522         int part1 = priv.x;
 523         int part2 = priv.y;
 524
 525         if ( part1 > 0 )
 526         {
 527             txt = m_Word.Mid(0, part1);
 528             dc.DrawText(txt, x + m_PosX, y + m_PosY);
 529             dc.GetTextExtent(txt, &w, &h);
 530             ofs += w;
 531         }
 532
 533         SwitchSelState(dc, info, true);
 534
 535         txt = m_Word.Mid(part1, part2-part1);
 536         dc.DrawText(txt, ofs + x + m_PosX, y + m_PosY);
 537
 538         if ( (size_t)part2 < m_Word.length() )
 539         {
 540             dc.GetTextExtent(txt, &w, &h);
 541             ofs += w;
 542             SwitchSelState(dc, info, false);
 543             txt = m_Word.Mid(part2);
 544             dc.DrawText(txt, ofs + x + m_PosX, y + m_PosY);
 545         }
 546         else
 547             drawSelectionAfterCell = true;
 548     }
 549     else
 550     {
 551         wxHtmlSelectionState selstate = info.GetState().GetSelectionState();
 552         // Not changing selection state, draw the word in single mode:
 553         if ( selstate != wxHTML_SEL_OUT &&
 554              dc.GetBackgroundMode() != wxSOLID )
 555         {
 556             SwitchSelState(dc, info, true);
 557         }
 558         else if ( selstate == wxHTML_SEL_OUT &&
 559                   dc.GetBackgroundMode() == wxSOLID )
 560         {
 561             SwitchSelState(dc, info, false);
 562         }
 563         dc.DrawText(m_Word, x + m_PosX, y + m_PosY);
 564         drawSelectionAfterCell = (selstate != wxHTML_SEL_OUT);
 565     }
 566
 567     // NB: If the text is justified then there is usually some free space
 568     //     between adjacent cells and drawing the selection only onto cells
 569     //     would result in ugly unselected spaces. The code below detects
 570     //     this special case and renders the selection *outside* the sell,
 571     //     too.
 572     if ( m_Parent->GetAlignHor() == wxHTML_ALIGN_JUSTIFY &&
 573          drawSelectionAfterCell )
 574     {
 575         wxHtmlCell *nextCell = m_Next;
 576         while ( nextCell && nextCell->IsFormattingCell() )
 577             nextCell = nextCell->GetNext();
 578         if ( nextCell )
 579         {
 580             int nextX = nextCell->GetPosX();
 581             if ( m_PosX + m_Width < nextX )
 582             {
 583                 dc.SetBrush(dc.GetBackground());
 584                 dc.SetPen(*wxTRANSPARENT_PEN);
 585                 dc.DrawRectangle(x + m_PosX + m_Width, y + m_PosY,
 586                                  nextX - m_PosX - m_Width, m_Height);
 587             }
 588         }
 589     }
 590 }
 591
 592
 593 wxString wxHtmlWordCell::ConvertToText(wxHtmlSelection *s) const
 594 {
 595     if ( s && (this == s->GetFromCell() || this == s->GetToCell()) )
 596     {
 597         wxPoint priv = this == s->GetFromCell() ? s->GetFromPrivPos()
 598                                                 : s->GetToPrivPos();
 599
 600         // VZ: we may be called before we had a chance to re-render ourselves
 601         //     and in this case GetFrom/ToPrivPos() is not set yet -- assume
 602         //     that this only happens in case of a double/triple click (which
 603         //     seems to be the case now) and so it makes sense to select the
 604         //     entire contents of the cell in this case
 605         //
 606         // TODO: but this really needs to be fixed in some better way later...
 607         if ( priv != wxDefaultPosition )
 608         {
 609             int part1 = priv.x;
 610             int part2 = priv.y;
 611             return m_Word.Mid(part1, part2-part1);
 612         }
 613         //else: return the whole word below
 614     }
 615
 616     return m_Word;
 617 }
 618
 619 wxCursor wxHtmlWordCell::GetMouseCursor(wxHtmlWindowInterface *window) const
 620 {
 621     if ( !GetLink() )
 622     {
 623         return window->GetHTMLCursor(wxHtmlWindowInterface::HTMLCursor_Text);
 624     }
 625     else
 626     {
 627         return wxHtmlCell::GetMouseCursor(window);
 628     }
 629 }
 630
 631
 632 //-----------------------------------------------------------------------------
 633 // wxHtmlContainerCell
 634 //-----------------------------------------------------------------------------
 635
 636 IMPLEMENT_ABSTRACT_CLASS(wxHtmlContainerCell, wxHtmlCell)
 637
 638 wxHtmlContainerCell::wxHtmlContainerCell(wxHtmlContainerCell *parent) : wxHtmlCell()
 639 {
 640     m_Cells = m_LastCell = NULL;
 641     m_Parent = parent;
 642     m_MaxTotalWidth = 0;
 643     if (m_Parent) m_Parent->InsertCell(this);
 644     m_AlignHor = wxHTML_ALIGN_LEFT;
 645     m_AlignVer = wxHTML_ALIGN_BOTTOM;
 646     m_IndentLeft = m_IndentRight = m_IndentTop = m_IndentBottom = 0;
 647     m_WidthFloat = 100; m_WidthFloatUnits = wxHTML_UNITS_PERCENT;
 648     m_UseBkColour = false;
 649     m_UseBorder = false;
 650     m_MinHeight = 0;
 651     m_MinHeightAlign = wxHTML_ALIGN_TOP;
 652     m_LastLayout = -1;
 653 }
 654
 655 wxHtmlContainerCell::~wxHtmlContainerCell()
 656 {
 657     wxHtmlCell *cell = m_Cells;
 658     while ( cell )
 659     {
 660         wxHtmlCell *cellNext = cell->GetNext();
 661         delete cell;
 662         cell = cellNext;
 663     }
 664 }
 665
 666
 667
 668 void wxHtmlContainerCell::SetIndent(int i, int what, int units)
 669 {
 670     int val = (units == wxHTML_UNITS_PIXELS) ? i : -i;
 671     if (what & wxHTML_INDENT_LEFT) m_IndentLeft = val;
 672     if (what & wxHTML_INDENT_RIGHT) m_IndentRight = val;
 673     if (what & wxHTML_INDENT_TOP) m_IndentTop = val;
 674     if (what & wxHTML_INDENT_BOTTOM) m_IndentBottom = val;
 675     m_LastLayout = -1;
 676 }
 677
 678
 679
 680 int wxHtmlContainerCell::GetIndent(int ind) const
 681 {
 682     if (ind & wxHTML_INDENT_LEFT) return m_IndentLeft;
 683     else if (ind & wxHTML_INDENT_RIGHT) return m_IndentRight;
 684     else if (ind & wxHTML_INDENT_TOP) return m_IndentTop;
 685     else if (ind & wxHTML_INDENT_BOTTOM) return m_IndentBottom;
 686     else return -1; /* BUG! Should not be called... */
 687 }
 688
 689
 690
 691
 692 int wxHtmlContainerCell::GetIndentUnits(int ind) const
 693 {
 694     bool p = false;
 695     if (ind & wxHTML_INDENT_LEFT) p = m_IndentLeft < 0;
 696     else if (ind & wxHTML_INDENT_RIGHT) p = m_IndentRight < 0;
 697     else if (ind & wxHTML_INDENT_TOP) p = m_IndentTop < 0;
 698     else if (ind & wxHTML_INDENT_BOTTOM) p = m_IndentBottom < 0;
 699     if (p) return wxHTML_UNITS_PERCENT;
 700     else return wxHTML_UNITS_PIXELS;
 701 }
 702
 703
 704 bool wxHtmlContainerCell::AdjustPagebreak(int *pagebreak,
 705                                           wxArrayInt& known_pagebreaks) const
 706 {
 707     if (!m_CanLiveOnPagebreak)
 708         return wxHtmlCell::AdjustPagebreak(pagebreak, known_pagebreaks);
 709
 710     wxHtmlCell *c = GetFirstChild();
 711     bool rt = false;
 712     int pbrk = *pagebreak - m_PosY;
 713
 714     while (c)
 715     {
 716         if (c->AdjustPagebreak(&pbrk, known_pagebreaks))
 717             rt = true;
 718         c = c->GetNext();
 719     }
 720     if (rt)
 721         *pagebreak = pbrk + m_PosY;
 722     return rt;
 723 }
 724
 725
 726 void wxHtmlContainerCell::Layout(int w)
 727 {
 728     wxHtmlCell::Layout(w);
 729
 730     if (m_LastLayout == w) return;
 731
 732     // VS: Any attempt to layout with negative or zero width leads to hell,
 733     // but we can't ignore such attempts completely, since it sometimes
 734     // happen (e.g. when trying how small a table can be). The best thing we
 735     // can do is to set the width of child cells to zero
 736     if (w < 1)
 737     {
 738        m_Width = 0;
 739        for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
 740             cell->Layout(0);
 741             // this does two things: it recursively calls this code on all
 742             // child contrainers and resets children's position to (0,0)
 743        return;
 744     }
 745
 746     wxHtmlCell *nextCell;
 747     long xpos = 0, ypos = m_IndentTop;
 748     int xdelta = 0, ybasicpos = 0, ydiff;
 749     int s_width, nextWordWidth, s_indent;
 750     int ysizeup = 0, ysizedown = 0;
 751     int MaxLineWidth = 0;
 752     int curLineWidth = 0;
 753     m_MaxTotalWidth = 0;
 754
 755
 756     /*
 757
 758     WIDTH ADJUSTING :
 759
 760     */
 761
 762     if (m_WidthFloatUnits == wxHTML_UNITS_PERCENT)
 763     {
 764         if (m_WidthFloat < 0) m_Width = (100 + m_WidthFloat) * w / 100;
 765         else m_Width = m_WidthFloat * w / 100;
 766     }
 767     else
 768     {
 769         if (m_WidthFloat < 0) m_Width = w + m_WidthFloat;
 770         else m_Width = m_WidthFloat;
 771     }
 772
 773     if (m_Cells)
 774     {
 775         int l = (m_IndentLeft < 0) ? (-m_IndentLeft * m_Width / 100) : m_IndentLeft;
 776         int r = (m_IndentRight < 0) ? (-m_IndentRight * m_Width / 100) : m_IndentRight;
 777         for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
 778             cell->Layout(m_Width - (l + r));
 779     }
 780
 781     /*
 782
 783     LAYOUTING :
 784
 785     */
 786
 787     // adjust indentation:
 788     s_indent = (m_IndentLeft < 0) ? (-m_IndentLeft * m_Width / 100) : m_IndentLeft;
 789     s_width = m_Width - s_indent - ((m_IndentRight < 0) ? (-m_IndentRight * m_Width / 100) : m_IndentRight);
 790
 791     // my own layouting:
 792     wxHtmlCell *cell = m_Cells,
 793                *line = m_Cells;
 794     while (cell != NULL)
 795     {
 796         switch (m_AlignVer)
 797         {
 798             case wxHTML_ALIGN_TOP :      ybasicpos = 0; break;
 799             case wxHTML_ALIGN_BOTTOM :   ybasicpos = - cell->GetHeight(); break;
 800             case wxHTML_ALIGN_CENTER :   ybasicpos = - cell->GetHeight() / 2; break;
 801         }
 802         ydiff = cell->GetHeight() + ybasicpos;
 803
 804         if (cell->GetDescent() + ydiff > ysizedown) ysizedown = cell->GetDescent() + ydiff;
 805         if (ybasicpos + cell->GetDescent() < -ysizeup) ysizeup = - (ybasicpos + cell->GetDescent());
 806
 807         // layout nonbreakable run of cells:
 808         cell->SetPos(xpos, ybasicpos + cell->GetDescent());
 809         xpos += cell->GetWidth();
 810         if (!cell->IsTerminalCell())
 811         {
 812             // Container cell indicates new line
 813             if (curLineWidth > m_MaxTotalWidth)
 814                 m_MaxTotalWidth = curLineWidth;
 815
 816             if (wxMax(cell->GetWidth(), cell->GetMaxTotalWidth()) > m_MaxTotalWidth)
 817                 m_MaxTotalWidth = cell->GetMaxTotalWidth();
 818             curLineWidth = 0;
 819         }
 820         else
 821             // Normal cell, add maximum cell width to line width
 822             curLineWidth += cell->GetMaxTotalWidth();
 823
 824         cell = cell->GetNext();
 825
 826         // compute length of the next word that would be added:
 827         nextWordWidth = 0;
 828         if (cell)
 829         {
 830             nextCell = cell;
 831             do
 832             {
 833                 nextWordWidth += nextCell->GetWidth();
 834                 nextCell = nextCell->GetNext();
 835             } while (nextCell && !nextCell->IsLinebreakAllowed());
 836         }
 837
 838         // force new line if occurred:
 839         if ((cell == NULL) ||
 840             (xpos + nextWordWidth > s_width && cell->IsLinebreakAllowed()))
 841         {
 842             if (xpos > MaxLineWidth) MaxLineWidth = xpos;
 843             if (ysizeup < 0) ysizeup = 0;
 844             if (ysizedown < 0) ysizedown = 0;
 845             switch (m_AlignHor) {
 846                 case wxHTML_ALIGN_LEFT :
 847                 case wxHTML_ALIGN_JUSTIFY :
 848                          xdelta = 0;
 849                          break;
 850                 case wxHTML_ALIGN_RIGHT :
 851                          xdelta = 0 + (s_width - xpos);
 852                          break;
 853                 case wxHTML_ALIGN_CENTER :
 854                          xdelta = 0 + (s_width - xpos) / 2;
 855                          break;
 856             }
 857             if (xdelta < 0) xdelta = 0;
 858             xdelta += s_indent;
 859
 860             ypos += ysizeup;
 861
 862             if (m_AlignHor != wxHTML_ALIGN_JUSTIFY || cell == NULL)
 863             {
 864                 while (line != cell)
 865                 {
 866                     line->SetPos(line->GetPosX() + xdelta,
 867                                    ypos + line->GetPosY());
 868                     line = line->GetNext();
 869                 }
 870             }
 871             else // align == justify
 872             {
 873                 // we have to distribute the extra horz space between the cells
 874                 // on this line
 875
 876                 // an added complication is that some cells have fixed size and
 877                 // shouldn't get any increment (it so happens that these cells
 878                 // also don't allow line break on them which provides with an
 879                 // easy way to test for this) -- and neither should the cells
 880                 // adjacent to them as this could result in a visible space
 881                 // between two cells separated by, e.g. font change, cell which
 882                 // is wrong
 883
 884                 int step = s_width - xpos;
 885                 if ( step > 0 )
 886                 {
 887                     // first count the cells which will get extra space
 888                     int total = -1;
 889
 890                     const wxHtmlCell *c;
 891                     if ( line != cell )
 892                     {
 893                         for ( c = line; c != cell; c = c->GetNext() )
 894                         {
 895                             if ( c->IsLinebreakAllowed() )
 896                             {
 897                                 total++;
 898                             }
 899                         }
 900                     }
 901
 902                     // and now extra space to those cells which merit it
 903                     if ( total )
 904                     {
 905                         // first visible cell on line is not moved:
 906                         while (line !=cell && !line->IsLinebreakAllowed())
 907                         {
 908                             line->SetPos(line->GetPosX() + s_indent,
 909                                          line->GetPosY() + ypos);
 910                             line = line->GetNext();
 911                         }
 912
 913                         if (line != cell)
 914                         {
 915                             line->SetPos(line->GetPosX() + s_indent,
 916                                          line->GetPosY() + ypos);
 917
 918                             line = line->GetNext();
 919                         }
 920
 921                         for ( int n = 0; line != cell; line = line->GetNext() )
 922                         {
 923                             if ( line->IsLinebreakAllowed() )
 924                             {
 925                                 // offset the next cell relative to this one
 926                                 // thus increasing our size
 927                                 n++;
 928                             }
 929
 930                             line->SetPos(line->GetPosX() + s_indent +
 931                                            ((n * step) / total),
 932                                            line->GetPosY() + ypos);
 933                         }
 934                     }
 935                     else
 936                     {
 937                         // this will cause the code to enter "else branch" below:
 938                         step = 0;
 939                     }
 940                 }
 941                 // else branch:
 942                 if ( step <= 0 ) // no extra space to distribute
 943                 {
 944                     // just set the indent properly
 945                     while (line != cell)
 946                     {
 947                         line->SetPos(line->GetPosX() + s_indent,
 948                                      line->GetPosY() + ypos);
 949                         line = line->GetNext();
 950                     }
 951                 }
 952             }
 953
 954             ypos += ysizedown;
 955             xpos = 0;
 956             ysizeup = ysizedown = 0;
 957             line = cell;
 958         }
 959     }
 960
 961     // setup height & width, depending on container layout:
 962     m_Height = ypos + (ysizedown + ysizeup) + m_IndentBottom;
 963
 964     if (m_Height < m_MinHeight)
 965     {
 966         if (m_MinHeightAlign != wxHTML_ALIGN_TOP)
 967         {
 968             int diff = m_MinHeight - m_Height;
 969             if (m_MinHeightAlign == wxHTML_ALIGN_CENTER) diff /= 2;
 970             cell = m_Cells;
 971             while (cell)
 972             {
 973                 cell->SetPos(cell->GetPosX(), cell->GetPosY() + diff);
 974                 cell = cell->GetNext();
 975             }
 976         }
 977         m_Height = m_MinHeight;
 978     }
 979
 980     if (curLineWidth > m_MaxTotalWidth)
 981         m_MaxTotalWidth = curLineWidth;
 982
 983     m_MaxTotalWidth += s_indent + ((m_IndentRight < 0) ? (-m_IndentRight * m_Width / 100) : m_IndentRight);
 984     MaxLineWidth += s_indent + ((m_IndentRight < 0) ? (-m_IndentRight * m_Width / 100) : m_IndentRight);
 985     if (m_Width < MaxLineWidth) m_Width = MaxLineWidth;
 986
 987     m_LastLayout = w;
 988 }
 989
 990 void wxHtmlContainerCell::UpdateRenderingStatePre(wxHtmlRenderingInfo& info,
 991                                                   wxHtmlCell *cell) const
 992 {
 993     wxHtmlSelection *s = info.GetSelection();
 994     if (!s) return;
 995     if (s->GetFromCell() == cell || s->GetToCell() == cell)
 996     {
 997         info.GetState().SetSelectionState(wxHTML_SEL_CHANGING);
 998     }
 999 }
1000
1001 void wxHtmlContainerCell::UpdateRenderingStatePost(wxHtmlRenderingInfo& info,
1002                                                    wxHtmlCell *cell) const
1003 {
1004     wxHtmlSelection *s = info.GetSelection();
1005     if (!s) return;
1006     if (s->GetToCell() == cell)
1007         info.GetState().SetSelectionState(wxHTML_SEL_OUT);
1008     else if (s->GetFromCell() == cell)
1009         info.GetState().SetSelectionState(wxHTML_SEL_IN);
1010 }
1011
1012 #define mMin(a, b) (((a) < (b)) ? (a) : (b))
1013 #define mMax(a, b) (((a) < (b)) ? (b) : (a))
1014
1015 void wxHtmlContainerCell::Draw(wxDC& dc, int x, int y, int view_y1, int view_y2,
1016                                wxHtmlRenderingInfo& info)
1017 {
1018 #if 0 // useful for debugging
1019     dc.SetPen(*wxRED_PEN);
1020     dc.DrawRectangle(x+m_PosX,y+m_PosY,m_Width,m_Height);
1021 #endif
1022
1023     int xlocal = x + m_PosX;
1024     int ylocal = y + m_PosY;
1025
1026     if (m_UseBkColour)
1027     {
1028         wxBrush myb = wxBrush(m_BkColour, wxSOLID);
1029
1030         int real_y1 = mMax(ylocal, view_y1);
1031         int real_y2 = mMin(ylocal + m_Height - 1, view_y2);
1032
1033         dc.SetBrush(myb);
1034         dc.SetPen(*wxTRANSPARENT_PEN);
1035         dc.DrawRectangle(xlocal, real_y1, m_Width, real_y2 - real_y1 + 1);
1036     }
1037
1038     if (m_UseBorder)
1039     {
1040         wxPen mypen1(m_BorderColour1, 1, wxSOLID);
1041         wxPen mypen2(m_BorderColour2, 1, wxSOLID);
1042
1043         dc.SetPen(mypen1);
1044         dc.DrawLine(xlocal, ylocal, xlocal, ylocal + m_Height - 1);
1045         dc.DrawLine(xlocal, ylocal, xlocal + m_Width, ylocal);
1046         dc.SetPen(mypen2);
1047         dc.DrawLine(xlocal + m_Width - 1, ylocal, xlocal +  m_Width - 1, ylocal + m_Height - 1);
1048         dc.DrawLine(xlocal, ylocal + m_Height - 1, xlocal + m_Width, ylocal + m_Height - 1);
1049     }
1050
1051     if (m_Cells)
1052     {
1053         // draw container's contents:
1054         for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
1055         {
1056
1057             // optimize drawing: don't render off-screen content:
1058             if ((ylocal + cell->GetPosY() <= view_y2) &&
1059                 (ylocal + cell->GetPosY() + cell->GetHeight() > view_y1))
1060             {
1061                 // the cell is visible, draw it:
1062                 UpdateRenderingStatePre(info, cell);
1063                 cell->Draw(dc,
1064                            xlocal, ylocal, view_y1, view_y2,
1065                            info);
1066                 UpdateRenderingStatePost(info, cell);
1067             }
1068             else
1069             {
1070                 // the cell is off-screen, proceed with font+color+etc.
1071                 // changes only:
1072                 cell->DrawInvisible(dc, xlocal, ylocal, info);
1073             }
1074         }
1075     }
1076 }
1077
1078
1079
1080 void wxHtmlContainerCell::DrawInvisible(wxDC& dc, int x, int y,
1081                                         wxHtmlRenderingInfo& info)
1082 {
1083     if (m_Cells)
1084     {
1085         for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
1086         {
1087             UpdateRenderingStatePre(info, cell);
1088             cell->DrawInvisible(dc, x + m_PosX, y + m_PosY, info);
1089             UpdateRenderingStatePost(info, cell);
1090         }
1091     }
1092 }
1093
1094
1095 wxColour wxHtmlContainerCell::GetBackgroundColour()
1096 {
1097     if (m_UseBkColour)
1098         return m_BkColour;
1099     else
1100         return wxNullColour;
1101 }
1102
1103
1104
1105 wxHtmlLinkInfo *wxHtmlContainerCell::GetLink(int x, int y) const
1106 {
1107     wxHtmlCell *cell = FindCellByPos(x, y);
1108
1109     // VZ: I don't know if we should pass absolute or relative coords to
1110     //     wxHtmlCell::GetLink()? As the base class version just ignores them
1111     //     anyhow, it hardly matters right now but should still be clarified
1112     return cell ? cell->GetLink(x, y) : NULL;
1113 }
1114
1115
1116
1117 void wxHtmlContainerCell::InsertCell(wxHtmlCell *f)
1118 {
1119     if (!m_Cells) m_Cells = m_LastCell = f;
1120     else
1121     {
1122         m_LastCell->SetNext(f);
1123         m_LastCell = f;
1124         if (m_LastCell) while (m_LastCell->GetNext()) m_LastCell = m_LastCell->GetNext();
1125     }
1126     f->SetParent(this);
1127     m_LastLayout = -1;
1128 }
1129
1130
1131
1132 void wxHtmlContainerCell::SetAlign(const wxHtmlTag& tag)
1133 {
1134     if (tag.HasParam(wxT("ALIGN")))
1135     {
1136         wxString alg = tag.GetParam(wxT("ALIGN"));
1137         alg.MakeUpper();
1138         if (alg == wxT("CENTER"))
1139             SetAlignHor(wxHTML_ALIGN_CENTER);
1140         else if (alg == wxT("LEFT"))
1141             SetAlignHor(wxHTML_ALIGN_LEFT);
1142         else if (alg == wxT("JUSTIFY"))
1143             SetAlignHor(wxHTML_ALIGN_JUSTIFY);
1144         else if (alg == wxT("RIGHT"))
1145             SetAlignHor(wxHTML_ALIGN_RIGHT);
1146         m_LastLayout = -1;
1147     }
1148 }
1149
1150
1151
1152 void wxHtmlContainerCell::SetWidthFloat(const wxHtmlTag& tag, double pixel_scale)
1153 {
1154     if (tag.HasParam(wxT("WIDTH")))
1155     {
1156         int wdi;
1157         wxString wd = tag.GetParam(wxT("WIDTH"));
1158
1159         if (wd[wd.length()-1] == wxT('%'))
1160         {
1161             wxSscanf(wd.c_str(), wxT("%i%%"), &wdi);
1162             SetWidthFloat(wdi, wxHTML_UNITS_PERCENT);
1163         }
1164         else
1165         {
1166             wxSscanf(wd.c_str(), wxT("%i"), &wdi);
1167             SetWidthFloat((int)(pixel_scale * (double)wdi), wxHTML_UNITS_PIXELS);
1168         }
1169         m_LastLayout = -1;
1170     }
1171 }
1172
1173
1174
1175 const wxHtmlCell* wxHtmlContainerCell::Find(int condition, const void* param) const
1176 {
1177     if (m_Cells)
1178     {
1179         for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
1180         {
1181             const wxHtmlCell *r = cell->Find(condition, param);
1182             if (r) return r;
1183         }
1184     }
1185     return NULL;
1186 }
1187
1188
1189 wxHtmlCell *wxHtmlContainerCell::FindCellByPos(wxCoord x, wxCoord y,
1190                                                unsigned flags) const
1191 {
1192     if ( flags & wxHTML_FIND_EXACT )
1193     {
1194         for ( const wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext() )
1195         {
1196             int cx = cell->GetPosX(),
1197                 cy = cell->GetPosY();
1198
1199             if ( (cx <= x) && (cx + cell->GetWidth() > x) &&
1200                  (cy <= y) && (cy + cell->GetHeight() > y) )
1201             {
1202                 return cell->FindCellByPos(x - cx, y - cy, flags);
1203             }
1204         }
1205     }
1206     else if ( flags & wxHTML_FIND_NEAREST_AFTER )
1207     {
1208         wxHtmlCell *c;
1209         for ( const wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext() )
1210         {
1211             if ( cell->IsFormattingCell() )
1212                 continue;
1213             int cellY = cell->GetPosY();
1214             if (!( y < cellY || (y < cellY + cell->GetHeight() &&
1215                                  x < cell->GetPosX() + cell->GetWidth()) ))
1216                 continue;
1217
1218             c = cell->FindCellByPos(x - cell->GetPosX(), y - cellY, flags);
1219             if (c) return c;
1220         }
1221     }
1222     else if ( flags & wxHTML_FIND_NEAREST_BEFORE )
1223     {
1224         wxHtmlCell *c2, *c = NULL;
1225         for ( const wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext() )
1226         {
1227             if ( cell->IsFormattingCell() )
1228                 continue;
1229             int cellY = cell->GetPosY();
1230             if (!( cellY + cell->GetHeight() <= y ||
1231                    (y >= cellY && x >= cell->GetPosX()) ))
1232                 break;
1233             c2 = cell->FindCellByPos(x - cell->GetPosX(), y - cellY, flags);
1234             if (c2)
1235                 c = c2;
1236         }
1237         if (c) return c;
1238     }
1239
1240     return NULL;
1241 }
1242
1243
1244 bool wxHtmlContainerCell::ProcessMouseClick(wxHtmlWindowInterface *window,
1245                                             const wxPoint& pos,
1246                                             const wxMouseEvent& event)
1247 {
1248 #if WXWIN_COMPATIBILITY_2_6
1249     wxHtmlCellOnMouseClickCompatHelper compat(window, pos, event);
1250     return compat.CallOnMouseClick(this);
1251 }
1252
1253 void wxHtmlContainerCell::OnMouseClick(wxWindow*,
1254                                        int, int, const wxMouseEvent& event)
1255 {
1256     wxCHECK_RET( gs_helperOnMouseClick, _T("unexpected call to OnMouseClick") );
1257     wxHtmlWindowInterface *window = gs_helperOnMouseClick->window;
1258     const wxPoint& pos = gs_helperOnMouseClick->pos;
1259 #endif // WXWIN_COMPATIBILITY_2_6
1260
1261     bool retval = false;
1262     wxHtmlCell *cell = FindCellByPos(pos.x, pos.y);
1263     if ( cell )
1264         retval = cell->ProcessMouseClick(window, pos, event);
1265
1266 #if WXWIN_COMPATIBILITY_2_6
1267     gs_helperOnMouseClick->retval = retval;
1268 #else
1269     return retval;
1270 #endif // WXWIN_COMPATIBILITY_2_6
1271 }
1272
1273
1274 wxHtmlCell *wxHtmlContainerCell::GetFirstTerminal() const
1275 {
1276     if ( m_Cells )
1277     {
1278         wxHtmlCell *c2;
1279         for (wxHtmlCell *c = m_Cells; c; c = c->GetNext())
1280         {
1281             c2 = c->GetFirstTerminal();
1282             if ( c2 )
1283                 return c2;
1284         }
1285     }
1286     return NULL;
1287 }
1288
1289 wxHtmlCell *wxHtmlContainerCell::GetLastTerminal() const
1290 {
1291     if ( m_Cells )
1292     {
1293         // most common case first:
1294         wxHtmlCell *c = m_LastCell->GetLastTerminal();
1295         if ( c )
1296             return c;
1297
1298         wxHtmlCell *ctmp;
1299         wxHtmlCell *c2 = NULL;
1300         for (c = m_Cells; c; c = c->GetNext())
1301         {
1302             ctmp = c->GetLastTerminal();
1303             if ( ctmp )
1304                 c2 = ctmp;
1305         }
1306         return c2;
1307     }
1308     else
1309         return NULL;
1310 }
1311
1312
1313 static bool IsEmptyContainer(wxHtmlContainerCell *cell)
1314 {
1315     for ( wxHtmlCell *c = cell->GetFirstChild(); c; c = c->GetNext() )
1316     {
1317         if ( !c->IsTerminalCell() || !c->IsFormattingCell() )
1318             return false;
1319     }
1320     return true;
1321 }
1322
1323 void wxHtmlContainerCell::RemoveExtraSpacing(bool top, bool bottom)
1324 {
1325     if ( top )
1326         SetIndent(0, wxHTML_INDENT_TOP);
1327     if ( bottom )
1328         SetIndent(0, wxHTML_INDENT_BOTTOM);
1329
1330     if ( m_Cells )
1331     {
1332         wxHtmlCell *c;
1333         wxHtmlContainerCell *cont;
1334         if ( top )
1335         {
1336             for ( c = m_Cells; c; c = c->GetNext() )
1337             {
1338                 if ( c->IsTerminalCell() )
1339                 {
1340                     if ( !c->IsFormattingCell() )
1341                         break;
1342                 }
1343                 else
1344                 {
1345                     cont = (wxHtmlContainerCell*)c;
1346                     if ( IsEmptyContainer(cont) )
1347                     {
1348                         cont->SetIndent(0, wxHTML_INDENT_VERTICAL);
1349                     }
1350                     else
1351                     {
1352                         cont->RemoveExtraSpacing(true, false);
1353                         break;
1354                     }
1355                 }
1356             }
1357         }
1358
1359         if ( bottom )
1360         {
1361             wxArrayPtrVoid arr;
1362             for ( c = m_Cells; c; c = c->GetNext() )
1363                 arr.Add((void*)c);
1364
1365             for ( int i = arr.GetCount() - 1; i >= 0; i--)
1366             {
1367                 c = (wxHtmlCell*)arr[i];
1368                 if ( c->IsTerminalCell() )
1369                 {
1370                     if ( !c->IsFormattingCell() )
1371                         break;
1372                 }
1373                 else
1374                 {
1375                     cont = (wxHtmlContainerCell*)c;
1376                     if ( IsEmptyContainer(cont) )
1377                     {
1378                         cont->SetIndent(0, wxHTML_INDENT_VERTICAL);
1379                     }
1380                     else
1381                     {
1382                         cont->RemoveExtraSpacing(false, true);
1383                         break;
1384                     }
1385                 }
1386             }
1387         }
1388     }
1389 }
1390
1391
1392
1393
1394 // --------------------------------------------------------------------------
1395 // wxHtmlColourCell
1396 // --------------------------------------------------------------------------
1397
1398 IMPLEMENT_ABSTRACT_CLASS(wxHtmlColourCell, wxHtmlCell)
1399
1400 void wxHtmlColourCell::Draw(wxDC& dc,
1401                             int x, int y,
1402                             int WXUNUSED(view_y1), int WXUNUSED(view_y2),
1403                             wxHtmlRenderingInfo& info)
1404 {
1405     DrawInvisible(dc, x, y, info);
1406 }
1407
1408 void wxHtmlColourCell::DrawInvisible(wxDC& dc,
1409                                      int WXUNUSED(x), int WXUNUSED(y),
1410                                      wxHtmlRenderingInfo& info)
1411 {
1412     wxHtmlRenderingState& state = info.GetState();
1413     if (m_Flags & wxHTML_CLR_FOREGROUND)
1414     {
1415         state.SetFgColour(m_Colour);
1416         if (state.GetSelectionState() != wxHTML_SEL_IN)
1417             dc.SetTextForeground(m_Colour);
1418         else
1419             dc.SetTextForeground(
1420                     info.GetStyle().GetSelectedTextColour(m_Colour));
1421     }
1422     if (m_Flags & wxHTML_CLR_BACKGROUND)
1423     {
1424         state.SetBgColour(m_Colour);
1425         if (state.GetSelectionState() != wxHTML_SEL_IN)
1426         {
1427             dc.SetTextBackground(m_Colour);
1428             dc.SetBackground(wxBrush(m_Colour, wxSOLID));
1429         }
1430         else
1431         {
1432             wxColour c = info.GetStyle().GetSelectedTextBgColour(m_Colour);
1433             dc.SetTextBackground(c);
1434             dc.SetBackground(wxBrush(c, wxSOLID));
1435         }
1436     }
1437 }
1438
1439
1440
1441
1442 // ---------------------------------------------------------------------------
1443 // wxHtmlFontCell
1444 // ---------------------------------------------------------------------------
1445
1446 IMPLEMENT_ABSTRACT_CLASS(wxHtmlFontCell, wxHtmlCell)
1447
1448 void wxHtmlFontCell::Draw(wxDC& dc,
1449                           int WXUNUSED(x), int WXUNUSED(y),
1450                           int WXUNUSED(view_y1), int WXUNUSED(view_y2),
1451                           wxHtmlRenderingInfo& WXUNUSED(info))
1452 {
1453     dc.SetFont(m_Font);
1454 }
1455
1456 void wxHtmlFontCell::DrawInvisible(wxDC& dc, int WXUNUSED(x), int WXUNUSED(y),
1457                                    wxHtmlRenderingInfo& WXUNUSED(info))
1458 {
1459     dc.SetFont(m_Font);
1460 }
1461
1462
1463
1464
1465
1466
1467
1468
1469 // ---------------------------------------------------------------------------
1470 // wxHtmlWidgetCell
1471 // ---------------------------------------------------------------------------
1472
1473 IMPLEMENT_ABSTRACT_CLASS(wxHtmlWidgetCell, wxHtmlCell)
1474
1475 wxHtmlWidgetCell::wxHtmlWidgetCell(wxWindow *wnd, int w)
1476 {
1477     int sx, sy;
1478     m_Wnd = wnd;
1479     m_Wnd->GetSize(&sx, &sy);
1480     m_Width = sx, m_Height = sy;
1481     m_WidthFloat = w;
1482 }
1483
1484
1485 void wxHtmlWidgetCell::Draw(wxDC& WXUNUSED(dc),
1486                             int WXUNUSED(x), int WXUNUSED(y),
1487                             int WXUNUSED(view_y1), int WXUNUSED(view_y2),
1488                             wxHtmlRenderingInfo& WXUNUSED(info))
1489 {
1490     int absx = 0, absy = 0, stx, sty;
1491     wxHtmlCell *c = this;
1492
1493     while (c)
1494     {
1495         absx += c->GetPosX();
1496         absy += c->GetPosY();
1497         c = c->GetParent();
1498     }
1499
1500     ((wxScrolledWindow*)(m_Wnd->GetParent()))->GetViewStart(&stx, &sty);
1501     m_Wnd->SetSize(absx - wxHTML_SCROLL_STEP * stx, absy  - wxHTML_SCROLL_STEP * sty, m_Width, m_Height);
1502 }
1503
1504
1505
1506 void wxHtmlWidgetCell::DrawInvisible(wxDC& WXUNUSED(dc),
1507                                      int WXUNUSED(x), int WXUNUSED(y),
1508                                      wxHtmlRenderingInfo& WXUNUSED(info))
1509 {
1510     int absx = 0, absy = 0, stx, sty;
1511     wxHtmlCell *c = this;
1512
1513     while (c)
1514     {
1515         absx += c->GetPosX();
1516         absy += c->GetPosY();
1517         c = c->GetParent();
1518     }
1519
1520     ((wxScrolledWindow*)(m_Wnd->GetParent()))->GetViewStart(&stx, &sty);
1521     m_Wnd->SetSize(absx - wxHTML_SCROLL_STEP * stx, absy  - wxHTML_SCROLL_STEP * sty, m_Width, m_Height);
1522 }
1523
1524
1525
1526 void wxHtmlWidgetCell::Layout(int w)
1527 {
1528     if (m_WidthFloat != 0)
1529     {
1530         m_Width = (w * m_WidthFloat) / 100;
1531         m_Wnd->SetSize(m_Width, m_Height);
1532     }
1533
1534     wxHtmlCell::Layout(w);
1535 }
1536
1537
1538
1539 // ----------------------------------------------------------------------------
1540 // wxHtmlTerminalCellsInterator
1541 // ----------------------------------------------------------------------------
1542
1543 const wxHtmlCell* wxHtmlTerminalCellsInterator::operator++()
1544 {
1545     if ( !m_pos )
1546         return NULL;
1547
1548     do
1549     {
1550         if ( m_pos == m_to )
1551         {
1552             m_pos = NULL;
1553             return NULL;
1554         }
1555
1556         if ( m_pos->GetNext() )
1557             m_pos = m_pos->GetNext();
1558         else
1559         {
1560             // we must go up the hierarchy until we reach container where this
1561             // is not the last child, and then go down to first terminal cell:
1562             while ( m_pos->GetNext() == NULL )
1563             {
1564                 m_pos = m_pos->GetParent();
1565                 if ( !m_pos )
1566                     return NULL;
1567             }
1568             m_pos = m_pos->GetNext();
1569         }
1570         while ( m_pos->GetFirstChild() != NULL )
1571             m_pos = m_pos->GetFirstChild();
1572     } while ( !m_pos->IsTerminalCell() );
1573
1574     return m_pos;
1575 }
1576
1577 #endif