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     wxCoord w, h, d;
 360     dc.GetTextExtent(m_Word, &w, &h, &d);
 361     m_Width = w;
 362     m_Height = h;
 363     m_Descent = d;
 364     SetCanLiveOnPagebreak(false);
 365     m_allowLinebreak = true;
 366 }
 367
 368 void wxHtmlWordCell::SetPreviousWord(wxHtmlWordCell *cell)
 369 {
 370     if ( cell && m_Parent == cell->m_Parent &&
 371          !wxIsspace(cell->m_Word.Last()) && !wxIsspace(m_Word[0u]) )
 372     {
 373         m_allowLinebreak = false;
 374     }
 375 }
 376
 377 // Splits m_Word into up to three parts according to selection, returns
 378 // substring before, in and after selection and the points (in relative coords)
 379 // where s2 and s3 start:
 380 void wxHtmlWordCell::Split(const wxDC& dc,
 381                            const wxPoint& selFrom, const wxPoint& selTo,
 382                            unsigned& pos1, unsigned& pos2) const
 383 {
 384     wxPoint pt1 = (selFrom == wxDefaultPosition) ?
 385                    wxDefaultPosition : selFrom - GetAbsPos();
 386     wxPoint pt2 = (selTo == wxDefaultPosition) ?
 387                    wxPoint(m_Width, wxDefaultCoord) : selTo - GetAbsPos();
 388
 389     unsigned len = m_Word.length();
 390     unsigned i = 0;
 391     pos1 = 0;
 392
 393     // adjust for cases when the start/end position is completely
 394     // outside the cell:
 395     if ( pt1.y < 0 )
 396         pt1.x = 0;
 397     if ( pt2.y >= m_Height )
 398         pt2.x = m_Width;
 399
 400     // before selection:
 401 #ifdef __WXMAC__
 402     // implementation using PartialExtents to support fractional widths
 403     wxArrayInt widths ;
 404     dc.GetPartialTextExtents(m_Word,widths) ;
 405     while( i < len && pt1.x >= widths[i] )
 406         i++ ;
 407 #else // __WXMAC__
 408     wxCoord charW, charH;
 409     while ( pt1.x > 0 && i < len )
 410     {
 411         dc.GetTextExtent(m_Word[i], &charW, &charH);
 412         pt1.x -= charW;
 413         if ( pt1.x >= 0 )
 414         {
 415             pos1 += charW;
 416             i++;
 417         }
 418     }
 419 #endif // __WXMAC__/!__WXMAC__
 420
 421     // in selection:
 422     unsigned j = i;
 423 #ifdef __WXMAC__
 424     while( j < len && pt2.x >= widths[j] )
 425         j++ ;
 426 #else // __WXMAC__
 427     pos2 = pos1;
 428     pt2.x -= pos2;
 429     while ( pt2.x > 0 && j < len )
 430     {
 431         dc.GetTextExtent(m_Word[j], &charW, &charH);
 432         pt2.x -= charW;
 433         if ( pt2.x >= 0 )
 434         {
 435             pos2 += charW;
 436             j++;
 437         }
 438     }
 439 #endif // __WXMAC__/!__WXMAC__
 440
 441     pos1 = i;
 442     pos2 = j;
 443 }
 444
 445 void wxHtmlWordCell::SetSelectionPrivPos(const wxDC& dc, wxHtmlSelection *s) const
 446 {
 447     unsigned p1, p2;
 448
 449     Split(dc,
 450           this == s->GetFromCell() ? s->GetFromPos() : wxDefaultPosition,
 451           this == s->GetToCell() ? s->GetToPos() : wxDefaultPosition,
 452           p1, p2);
 453
 454     wxPoint p(0, m_Word.length());
 455
 456     if ( this == s->GetFromCell() )
 457         p.x = p1; // selection starts here
 458     if ( this == s->GetToCell() )
 459         p.y = p2; // selection ends here
 460
 461     if ( this == s->GetFromCell() )
 462         s->SetFromPrivPos(p);
 463     if ( this == s->GetToCell() )
 464         s->SetToPrivPos(p);
 465 }
 466
 467
 468 static void SwitchSelState(wxDC& dc, wxHtmlRenderingInfo& info,
 469                            bool toSelection)
 470 {
 471     wxColour fg = info.GetState().GetFgColour();
 472     wxColour bg = info.GetState().GetBgColour();
 473
 474     if ( toSelection )
 475     {
 476         dc.SetBackgroundMode(wxSOLID);
 477         dc.SetTextForeground(info.GetStyle().GetSelectedTextColour(fg));
 478         dc.SetTextBackground(info.GetStyle().GetSelectedTextBgColour(bg));
 479         dc.SetBackground(wxBrush(info.GetStyle().GetSelectedTextBgColour(bg),
 480                                  wxSOLID));
 481     }
 482     else
 483     {
 484         dc.SetBackgroundMode(wxTRANSPARENT);
 485         dc.SetTextForeground(fg);
 486         dc.SetTextBackground(bg);
 487         dc.SetBackground(wxBrush(bg, wxSOLID));
 488     }
 489 }
 490
 491
 492 void wxHtmlWordCell::Draw(wxDC& dc, int x, int y,
 493                           int WXUNUSED(view_y1), int WXUNUSED(view_y2),
 494                           wxHtmlRenderingInfo& info)
 495 {
 496 #if 0 // useful for debugging
 497     dc.SetPen(*wxBLACK_PEN);
 498     dc.DrawRectangle(x+m_PosX,y+m_PosY,m_Width /* VZ: +1? */ ,m_Height);
 499 #endif
 500
 501     bool drawSelectionAfterCell = false;
 502
 503     if ( info.GetState().GetSelectionState() == wxHTML_SEL_CHANGING )
 504     {
 505         // Selection changing, we must draw the word piecewise:
 506         wxHtmlSelection *s = info.GetSelection();
 507         wxString txt;
 508         int w, h;
 509         int ofs = 0;
 510
 511         wxPoint priv = (this == s->GetFromCell()) ?
 512                            s->GetFromPrivPos() : s->GetToPrivPos();
 513
 514         // NB: this is quite a hack: in order to compute selection boundaries
 515         //     (in word's characters) we must know current font, which is only
 516         //     possible inside rendering code. Therefore we update the
 517         //     information here and store it in wxHtmlSelection so that
 518         //     ConvertToText can use it later:
 519         if ( priv == wxDefaultPosition )
 520         {
 521             SetSelectionPrivPos(dc, s);
 522             priv = (this == s->GetFromCell()) ?
 523                     s->GetFromPrivPos() : s->GetToPrivPos();
 524         }
 525
 526         int part1 = priv.x;
 527         int part2 = priv.y;
 528
 529         if ( part1 > 0 )
 530         {
 531             txt = m_Word.Mid(0, part1);
 532             dc.DrawText(txt, x + m_PosX, y + m_PosY);
 533             dc.GetTextExtent(txt, &w, &h);
 534             ofs += w;
 535         }
 536
 537         SwitchSelState(dc, info, true);
 538
 539         txt = m_Word.Mid(part1, part2-part1);
 540         dc.DrawText(txt, ofs + x + m_PosX, y + m_PosY);
 541
 542         if ( (size_t)part2 < m_Word.length() )
 543         {
 544             dc.GetTextExtent(txt, &w, &h);
 545             ofs += w;
 546             SwitchSelState(dc, info, false);
 547             txt = m_Word.Mid(part2);
 548             dc.DrawText(txt, ofs + x + m_PosX, y + m_PosY);
 549         }
 550         else
 551             drawSelectionAfterCell = true;
 552     }
 553     else
 554     {
 555         wxHtmlSelectionState selstate = info.GetState().GetSelectionState();
 556         // Not changing selection state, draw the word in single mode:
 557         if ( selstate != wxHTML_SEL_OUT &&
 558              dc.GetBackgroundMode() != wxSOLID )
 559         {
 560             SwitchSelState(dc, info, true);
 561         }
 562         else if ( selstate == wxHTML_SEL_OUT &&
 563                   dc.GetBackgroundMode() == wxSOLID )
 564         {
 565             SwitchSelState(dc, info, false);
 566         }
 567         dc.DrawText(m_Word, x + m_PosX, y + m_PosY);
 568         drawSelectionAfterCell = (selstate != wxHTML_SEL_OUT);
 569     }
 570
 571     // NB: If the text is justified then there is usually some free space
 572     //     between adjacent cells and drawing the selection only onto cells
 573     //     would result in ugly unselected spaces. The code below detects
 574     //     this special case and renders the selection *outside* the sell,
 575     //     too.
 576     if ( m_Parent->GetAlignHor() == wxHTML_ALIGN_JUSTIFY &&
 577          drawSelectionAfterCell )
 578     {
 579         wxHtmlCell *nextCell = m_Next;
 580         while ( nextCell && nextCell->IsFormattingCell() )
 581             nextCell = nextCell->GetNext();
 582         if ( nextCell )
 583         {
 584             int nextX = nextCell->GetPosX();
 585             if ( m_PosX + m_Width < nextX )
 586             {
 587                 dc.SetBrush(dc.GetBackground());
 588                 dc.SetPen(*wxTRANSPARENT_PEN);
 589                 dc.DrawRectangle(x + m_PosX + m_Width, y + m_PosY,
 590                                  nextX - m_PosX - m_Width, m_Height);
 591             }
 592         }
 593     }
 594 }
 595
 596
 597 wxString wxHtmlWordCell::ConvertToText(wxHtmlSelection *s) const
 598 {
 599     if ( s && (this == s->GetFromCell() || this == s->GetToCell()) )
 600     {
 601         wxPoint priv = this == s->GetFromCell() ? s->GetFromPrivPos()
 602                                                 : s->GetToPrivPos();
 603
 604         // VZ: we may be called before we had a chance to re-render ourselves
 605         //     and in this case GetFrom/ToPrivPos() is not set yet -- assume
 606         //     that this only happens in case of a double/triple click (which
 607         //     seems to be the case now) and so it makes sense to select the
 608         //     entire contents of the cell in this case
 609         //
 610         // TODO: but this really needs to be fixed in some better way later...
 611         if ( priv != wxDefaultPosition )
 612         {
 613             int part1 = priv.x;
 614             int part2 = priv.y;
 615             return m_Word.Mid(part1, part2-part1);
 616         }
 617         //else: return the whole word below
 618     }
 619
 620     return m_Word;
 621 }
 622
 623 wxCursor wxHtmlWordCell::GetMouseCursor(wxHtmlWindowInterface *window) const
 624 {
 625     if ( !GetLink() )
 626     {
 627         return window->GetHTMLCursor(wxHtmlWindowInterface::HTMLCursor_Text);
 628     }
 629     else
 630     {
 631         return wxHtmlCell::GetMouseCursor(window);
 632     }
 633 }
 634
 635
 636 //-----------------------------------------------------------------------------
 637 // wxHtmlContainerCell
 638 //-----------------------------------------------------------------------------
 639
 640 IMPLEMENT_ABSTRACT_CLASS(wxHtmlContainerCell, wxHtmlCell)
 641
 642 wxHtmlContainerCell::wxHtmlContainerCell(wxHtmlContainerCell *parent) : wxHtmlCell()
 643 {
 644     m_Cells = m_LastCell = NULL;
 645     m_Parent = parent;
 646     m_MaxTotalWidth = 0;
 647     if (m_Parent) m_Parent->InsertCell(this);
 648     m_AlignHor = wxHTML_ALIGN_LEFT;
 649     m_AlignVer = wxHTML_ALIGN_BOTTOM;
 650     m_IndentLeft = m_IndentRight = m_IndentTop = m_IndentBottom = 0;
 651     m_WidthFloat = 100; m_WidthFloatUnits = wxHTML_UNITS_PERCENT;
 652     m_UseBkColour = false;
 653     m_UseBorder = false;
 654     m_MinHeight = 0;
 655     m_MinHeightAlign = wxHTML_ALIGN_TOP;
 656     m_LastLayout = -1;
 657 }
 658
 659 wxHtmlContainerCell::~wxHtmlContainerCell()
 660 {
 661     wxHtmlCell *cell = m_Cells;
 662     while ( cell )
 663     {
 664         wxHtmlCell *cellNext = cell->GetNext();
 665         delete cell;
 666         cell = cellNext;
 667     }
 668 }
 669
 670
 671
 672 void wxHtmlContainerCell::SetIndent(int i, int what, int units)
 673 {
 674     int val = (units == wxHTML_UNITS_PIXELS) ? i : -i;
 675     if (what & wxHTML_INDENT_LEFT) m_IndentLeft = val;
 676     if (what & wxHTML_INDENT_RIGHT) m_IndentRight = val;
 677     if (what & wxHTML_INDENT_TOP) m_IndentTop = val;
 678     if (what & wxHTML_INDENT_BOTTOM) m_IndentBottom = val;
 679     m_LastLayout = -1;
 680 }
 681
 682
 683
 684 int wxHtmlContainerCell::GetIndent(int ind) const
 685 {
 686     if (ind & wxHTML_INDENT_LEFT) return m_IndentLeft;
 687     else if (ind & wxHTML_INDENT_RIGHT) return m_IndentRight;
 688     else if (ind & wxHTML_INDENT_TOP) return m_IndentTop;
 689     else if (ind & wxHTML_INDENT_BOTTOM) return m_IndentBottom;
 690     else return -1; /* BUG! Should not be called... */
 691 }
 692
 693
 694
 695
 696 int wxHtmlContainerCell::GetIndentUnits(int ind) const
 697 {
 698     bool p = false;
 699     if (ind & wxHTML_INDENT_LEFT) p = m_IndentLeft < 0;
 700     else if (ind & wxHTML_INDENT_RIGHT) p = m_IndentRight < 0;
 701     else if (ind & wxHTML_INDENT_TOP) p = m_IndentTop < 0;
 702     else if (ind & wxHTML_INDENT_BOTTOM) p = m_IndentBottom < 0;
 703     if (p) return wxHTML_UNITS_PERCENT;
 704     else return wxHTML_UNITS_PIXELS;
 705 }
 706
 707
 708 bool wxHtmlContainerCell::AdjustPagebreak(int *pagebreak,
 709                                           wxArrayInt& known_pagebreaks) const
 710 {
 711     if (!m_CanLiveOnPagebreak)
 712         return wxHtmlCell::AdjustPagebreak(pagebreak, known_pagebreaks);
 713
 714     wxHtmlCell *c = GetFirstChild();
 715     bool rt = false;
 716     int pbrk = *pagebreak - m_PosY;
 717
 718     while (c)
 719     {
 720         if (c->AdjustPagebreak(&pbrk, known_pagebreaks))
 721             rt = true;
 722         c = c->GetNext();
 723     }
 724     if (rt)
 725         *pagebreak = pbrk + m_PosY;
 726     return rt;
 727 }
 728
 729
 730 void wxHtmlContainerCell::Layout(int w)
 731 {
 732     wxHtmlCell::Layout(w);
 733
 734     if (m_LastLayout == w) return;
 735
 736     // VS: Any attempt to layout with negative or zero width leads to hell,
 737     // but we can't ignore such attempts completely, since it sometimes
 738     // happen (e.g. when trying how small a table can be). The best thing we
 739     // can do is to set the width of child cells to zero
 740     if (w < 1)
 741     {
 742        m_Width = 0;
 743        for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
 744             cell->Layout(0);
 745             // this does two things: it recursively calls this code on all
 746             // child contrainers and resets children's position to (0,0)
 747        return;
 748     }
 749
 750     wxHtmlCell *nextCell;
 751     long xpos = 0, ypos = m_IndentTop;
 752     int xdelta = 0, ybasicpos = 0, ydiff;
 753     int s_width, nextWordWidth, s_indent;
 754     int ysizeup = 0, ysizedown = 0;
 755     int MaxLineWidth = 0;
 756     int curLineWidth = 0;
 757     m_MaxTotalWidth = 0;
 758
 759
 760     /*
 761
 762     WIDTH ADJUSTING :
 763
 764     */
 765
 766     if (m_WidthFloatUnits == wxHTML_UNITS_PERCENT)
 767     {
 768         if (m_WidthFloat < 0) m_Width = (100 + m_WidthFloat) * w / 100;
 769         else m_Width = m_WidthFloat * w / 100;
 770     }
 771     else
 772     {
 773         if (m_WidthFloat < 0) m_Width = w + m_WidthFloat;
 774         else m_Width = m_WidthFloat;
 775     }
 776
 777     if (m_Cells)
 778     {
 779         int l = (m_IndentLeft < 0) ? (-m_IndentLeft * m_Width / 100) : m_IndentLeft;
 780         int r = (m_IndentRight < 0) ? (-m_IndentRight * m_Width / 100) : m_IndentRight;
 781         for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
 782             cell->Layout(m_Width - (l + r));
 783     }
 784
 785     /*
 786
 787     LAYOUTING :
 788
 789     */
 790
 791     // adjust indentation:
 792     s_indent = (m_IndentLeft < 0) ? (-m_IndentLeft * m_Width / 100) : m_IndentLeft;
 793     s_width = m_Width - s_indent - ((m_IndentRight < 0) ? (-m_IndentRight * m_Width / 100) : m_IndentRight);
 794
 795     // my own layouting:
 796     wxHtmlCell *cell = m_Cells,
 797                *line = m_Cells;
 798     while (cell != NULL)
 799     {
 800         switch (m_AlignVer)
 801         {
 802             case wxHTML_ALIGN_TOP :      ybasicpos = 0; break;
 803             case wxHTML_ALIGN_BOTTOM :   ybasicpos = - cell->GetHeight(); break;
 804             case wxHTML_ALIGN_CENTER :   ybasicpos = - cell->GetHeight() / 2; break;
 805         }
 806         ydiff = cell->GetHeight() + ybasicpos;
 807
 808         if (cell->GetDescent() + ydiff > ysizedown) ysizedown = cell->GetDescent() + ydiff;
 809         if (ybasicpos + cell->GetDescent() < -ysizeup) ysizeup = - (ybasicpos + cell->GetDescent());
 810
 811         // layout nonbreakable run of cells:
 812         cell->SetPos(xpos, ybasicpos + cell->GetDescent());
 813         xpos += cell->GetWidth();
 814         if (!cell->IsTerminalCell())
 815         {
 816             // Container cell indicates new line
 817             if (curLineWidth > m_MaxTotalWidth)
 818                 m_MaxTotalWidth = curLineWidth;
 819
 820             if (wxMax(cell->GetWidth(), cell->GetMaxTotalWidth()) > m_MaxTotalWidth)
 821                 m_MaxTotalWidth = cell->GetMaxTotalWidth();
 822             curLineWidth = 0;
 823         }
 824         else
 825             // Normal cell, add maximum cell width to line width
 826             curLineWidth += cell->GetMaxTotalWidth();
 827
 828         cell = cell->GetNext();
 829
 830         // compute length of the next word that would be added:
 831         nextWordWidth = 0;
 832         if (cell)
 833         {
 834             nextCell = cell;
 835             do
 836             {
 837                 nextWordWidth += nextCell->GetWidth();
 838                 nextCell = nextCell->GetNext();
 839             } while (nextCell && !nextCell->IsLinebreakAllowed());
 840         }
 841
 842         // force new line if occurred:
 843         if ((cell == NULL) ||
 844             (xpos + nextWordWidth > s_width && cell->IsLinebreakAllowed()))
 845         {
 846             if (xpos > MaxLineWidth) MaxLineWidth = xpos;
 847             if (ysizeup < 0) ysizeup = 0;
 848             if (ysizedown < 0) ysizedown = 0;
 849             switch (m_AlignHor) {
 850                 case wxHTML_ALIGN_LEFT :
 851                 case wxHTML_ALIGN_JUSTIFY :
 852                          xdelta = 0;
 853                          break;
 854                 case wxHTML_ALIGN_RIGHT :
 855                          xdelta = 0 + (s_width - xpos);
 856                          break;
 857                 case wxHTML_ALIGN_CENTER :
 858                          xdelta = 0 + (s_width - xpos) / 2;
 859                          break;
 860             }
 861             if (xdelta < 0) xdelta = 0;
 862             xdelta += s_indent;
 863
 864             ypos += ysizeup;
 865
 866             if (m_AlignHor != wxHTML_ALIGN_JUSTIFY || cell == NULL)
 867             {
 868                 while (line != cell)
 869                 {
 870                     line->SetPos(line->GetPosX() + xdelta,
 871                                    ypos + line->GetPosY());
 872                     line = line->GetNext();
 873                 }
 874             }
 875             else // align == justify
 876             {
 877                 // we have to distribute the extra horz space between the cells
 878                 // on this line
 879
 880                 // an added complication is that some cells have fixed size and
 881                 // shouldn't get any increment (it so happens that these cells
 882                 // also don't allow line break on them which provides with an
 883                 // easy way to test for this) -- and neither should the cells
 884                 // adjacent to them as this could result in a visible space
 885                 // between two cells separated by, e.g. font change, cell which
 886                 // is wrong
 887
 888                 int step = s_width - xpos;
 889                 if ( step > 0 )
 890                 {
 891                     // first count the cells which will get extra space
 892                     int total = -1;
 893
 894                     const wxHtmlCell *c;
 895                     if ( line != cell )
 896                     {
 897                         for ( c = line; c != cell; c = c->GetNext() )
 898                         {
 899                             if ( c->IsLinebreakAllowed() )
 900                             {
 901                                 total++;
 902                             }
 903                         }
 904                     }
 905
 906                     // and now extra space to those cells which merit it
 907                     if ( total )
 908                     {
 909                         // first visible cell on line is not moved:
 910                         while (line !=cell && !line->IsLinebreakAllowed())
 911                         {
 912                             line->SetPos(line->GetPosX() + s_indent,
 913                                          line->GetPosY() + ypos);
 914                             line = line->GetNext();
 915                         }
 916
 917                         if (line != cell)
 918                         {
 919                             line->SetPos(line->GetPosX() + s_indent,
 920                                          line->GetPosY() + ypos);
 921
 922                             line = line->GetNext();
 923                         }
 924
 925                         for ( int n = 0; line != cell; line = line->GetNext() )
 926                         {
 927                             if ( line->IsLinebreakAllowed() )
 928                             {
 929                                 // offset the next cell relative to this one
 930                                 // thus increasing our size
 931                                 n++;
 932                             }
 933
 934                             line->SetPos(line->GetPosX() + s_indent +
 935                                            ((n * step) / total),
 936                                            line->GetPosY() + ypos);
 937                         }
 938                     }
 939                     else
 940                     {
 941                         // this will cause the code to enter "else branch" below:
 942                         step = 0;
 943                     }
 944                 }
 945                 // else branch:
 946                 if ( step <= 0 ) // no extra space to distribute
 947                 {
 948                     // just set the indent properly
 949                     while (line != cell)
 950                     {
 951                         line->SetPos(line->GetPosX() + s_indent,
 952                                      line->GetPosY() + ypos);
 953                         line = line->GetNext();
 954                     }
 955                 }
 956             }
 957
 958             ypos += ysizedown;
 959             xpos = 0;
 960             ysizeup = ysizedown = 0;
 961             line = cell;
 962         }
 963     }
 964
 965     // setup height & width, depending on container layout:
 966     m_Height = ypos + (ysizedown + ysizeup) + m_IndentBottom;
 967
 968     if (m_Height < m_MinHeight)
 969     {
 970         if (m_MinHeightAlign != wxHTML_ALIGN_TOP)
 971         {
 972             int diff = m_MinHeight - m_Height;
 973             if (m_MinHeightAlign == wxHTML_ALIGN_CENTER) diff /= 2;
 974             cell = m_Cells;
 975             while (cell)
 976             {
 977                 cell->SetPos(cell->GetPosX(), cell->GetPosY() + diff);
 978                 cell = cell->GetNext();
 979             }
 980         }
 981         m_Height = m_MinHeight;
 982     }
 983
 984     if (curLineWidth > m_MaxTotalWidth)
 985         m_MaxTotalWidth = curLineWidth;
 986
 987     m_MaxTotalWidth += s_indent + ((m_IndentRight < 0) ? (-m_IndentRight * m_Width / 100) : m_IndentRight);
 988     MaxLineWidth += s_indent + ((m_IndentRight < 0) ? (-m_IndentRight * m_Width / 100) : m_IndentRight);
 989     if (m_Width < MaxLineWidth) m_Width = MaxLineWidth;
 990
 991     m_LastLayout = w;
 992 }
 993
 994 void wxHtmlContainerCell::UpdateRenderingStatePre(wxHtmlRenderingInfo& info,
 995                                                   wxHtmlCell *cell) const
 996 {
 997     wxHtmlSelection *s = info.GetSelection();
 998     if (!s) return;
 999     if (s->GetFromCell() == cell || s->GetToCell() == cell)
1000     {
1001         info.GetState().SetSelectionState(wxHTML_SEL_CHANGING);
1002     }
1003 }
1004
1005 void wxHtmlContainerCell::UpdateRenderingStatePost(wxHtmlRenderingInfo& info,
1006                                                    wxHtmlCell *cell) const
1007 {
1008     wxHtmlSelection *s = info.GetSelection();
1009     if (!s) return;
1010     if (s->GetToCell() == cell)
1011         info.GetState().SetSelectionState(wxHTML_SEL_OUT);
1012     else if (s->GetFromCell() == cell)
1013         info.GetState().SetSelectionState(wxHTML_SEL_IN);
1014 }
1015
1016 #define mMin(a, b) (((a) < (b)) ? (a) : (b))
1017 #define mMax(a, b) (((a) < (b)) ? (b) : (a))
1018
1019 void wxHtmlContainerCell::Draw(wxDC& dc, int x, int y, int view_y1, int view_y2,
1020                                wxHtmlRenderingInfo& info)
1021 {
1022 #if 0 // useful for debugging
1023     dc.SetPen(*wxRED_PEN);
1024     dc.DrawRectangle(x+m_PosX,y+m_PosY,m_Width,m_Height);
1025 #endif
1026
1027     int xlocal = x + m_PosX;
1028     int ylocal = y + m_PosY;
1029
1030     if (m_UseBkColour)
1031     {
1032         wxBrush myb = wxBrush(m_BkColour, wxSOLID);
1033
1034         int real_y1 = mMax(ylocal, view_y1);
1035         int real_y2 = mMin(ylocal + m_Height - 1, view_y2);
1036
1037         dc.SetBrush(myb);
1038         dc.SetPen(*wxTRANSPARENT_PEN);
1039         dc.DrawRectangle(xlocal, real_y1, m_Width, real_y2 - real_y1 + 1);
1040     }
1041
1042     if (m_UseBorder)
1043     {
1044         wxPen mypen1(m_BorderColour1, 1, wxSOLID);
1045         wxPen mypen2(m_BorderColour2, 1, wxSOLID);
1046
1047         dc.SetPen(mypen1);
1048         dc.DrawLine(xlocal, ylocal, xlocal, ylocal + m_Height - 1);
1049         dc.DrawLine(xlocal, ylocal, xlocal + m_Width, ylocal);
1050         dc.SetPen(mypen2);
1051         dc.DrawLine(xlocal + m_Width - 1, ylocal, xlocal +  m_Width - 1, ylocal + m_Height - 1);
1052         dc.DrawLine(xlocal, ylocal + m_Height - 1, xlocal + m_Width, ylocal + m_Height - 1);
1053     }
1054
1055     if (m_Cells)
1056     {
1057         // draw container's contents:
1058         for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
1059         {
1060
1061             // optimize drawing: don't render off-screen content:
1062             if ((ylocal + cell->GetPosY() <= view_y2) &&
1063                 (ylocal + cell->GetPosY() + cell->GetHeight() > view_y1))
1064             {
1065                 // the cell is visible, draw it:
1066                 UpdateRenderingStatePre(info, cell);
1067                 cell->Draw(dc,
1068                            xlocal, ylocal, view_y1, view_y2,
1069                            info);
1070                 UpdateRenderingStatePost(info, cell);
1071             }
1072             else
1073             {
1074                 // the cell is off-screen, proceed with font+color+etc.
1075                 // changes only:
1076                 cell->DrawInvisible(dc, xlocal, ylocal, info);
1077             }
1078         }
1079     }
1080 }
1081
1082
1083
1084 void wxHtmlContainerCell::DrawInvisible(wxDC& dc, int x, int y,
1085                                         wxHtmlRenderingInfo& info)
1086 {
1087     if (m_Cells)
1088     {
1089         for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
1090         {
1091             UpdateRenderingStatePre(info, cell);
1092             cell->DrawInvisible(dc, x + m_PosX, y + m_PosY, info);
1093             UpdateRenderingStatePost(info, cell);
1094         }
1095     }
1096 }
1097
1098
1099 wxColour wxHtmlContainerCell::GetBackgroundColour()
1100 {
1101     if (m_UseBkColour)
1102         return m_BkColour;
1103     else
1104         return wxNullColour;
1105 }
1106
1107
1108
1109 wxHtmlLinkInfo *wxHtmlContainerCell::GetLink(int x, int y) const
1110 {
1111     wxHtmlCell *cell = FindCellByPos(x, y);
1112
1113     // VZ: I don't know if we should pass absolute or relative coords to
1114     //     wxHtmlCell::GetLink()? As the base class version just ignores them
1115     //     anyhow, it hardly matters right now but should still be clarified
1116     return cell ? cell->GetLink(x, y) : NULL;
1117 }
1118
1119
1120
1121 void wxHtmlContainerCell::InsertCell(wxHtmlCell *f)
1122 {
1123     if (!m_Cells) m_Cells = m_LastCell = f;
1124     else
1125     {
1126         m_LastCell->SetNext(f);
1127         m_LastCell = f;
1128         if (m_LastCell) while (m_LastCell->GetNext()) m_LastCell = m_LastCell->GetNext();
1129     }
1130     f->SetParent(this);
1131     m_LastLayout = -1;
1132 }
1133
1134
1135
1136 void wxHtmlContainerCell::SetAlign(const wxHtmlTag& tag)
1137 {
1138     if (tag.HasParam(wxT("ALIGN")))
1139     {
1140         wxString alg = tag.GetParam(wxT("ALIGN"));
1141         alg.MakeUpper();
1142         if (alg == wxT("CENTER"))
1143             SetAlignHor(wxHTML_ALIGN_CENTER);
1144         else if (alg == wxT("LEFT"))
1145             SetAlignHor(wxHTML_ALIGN_LEFT);
1146         else if (alg == wxT("JUSTIFY"))
1147             SetAlignHor(wxHTML_ALIGN_JUSTIFY);
1148         else if (alg == wxT("RIGHT"))
1149             SetAlignHor(wxHTML_ALIGN_RIGHT);
1150         m_LastLayout = -1;
1151     }
1152 }
1153
1154
1155
1156 void wxHtmlContainerCell::SetWidthFloat(const wxHtmlTag& tag, double pixel_scale)
1157 {
1158     if (tag.HasParam(wxT("WIDTH")))
1159     {
1160         int wdi;
1161         wxString wd = tag.GetParam(wxT("WIDTH"));
1162
1163         if (wd[wd.length()-1] == wxT('%'))
1164         {
1165             wxSscanf(wd.c_str(), wxT("%i%%"), &wdi);
1166             SetWidthFloat(wdi, wxHTML_UNITS_PERCENT);
1167         }
1168         else
1169         {
1170             wxSscanf(wd.c_str(), wxT("%i"), &wdi);
1171             SetWidthFloat((int)(pixel_scale * (double)wdi), wxHTML_UNITS_PIXELS);
1172         }
1173         m_LastLayout = -1;
1174     }
1175 }
1176
1177
1178
1179 const wxHtmlCell* wxHtmlContainerCell::Find(int condition, const void* param) const
1180 {
1181     if (m_Cells)
1182     {
1183         for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
1184         {
1185             const wxHtmlCell *r = cell->Find(condition, param);
1186             if (r) return r;
1187         }
1188     }
1189     return NULL;
1190 }
1191
1192
1193 wxHtmlCell *wxHtmlContainerCell::FindCellByPos(wxCoord x, wxCoord y,
1194                                                unsigned flags) const
1195 {
1196     if ( flags & wxHTML_FIND_EXACT )
1197     {
1198         for ( const wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext() )
1199         {
1200             int cx = cell->GetPosX(),
1201                 cy = cell->GetPosY();
1202
1203             if ( (cx <= x) && (cx + cell->GetWidth() > x) &&
1204                  (cy <= y) && (cy + cell->GetHeight() > y) )
1205             {
1206                 return cell->FindCellByPos(x - cx, y - cy, flags);
1207             }
1208         }
1209     }
1210     else if ( flags & wxHTML_FIND_NEAREST_AFTER )
1211     {
1212         wxHtmlCell *c;
1213         for ( const wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext() )
1214         {
1215             if ( cell->IsFormattingCell() )
1216                 continue;
1217             int cellY = cell->GetPosY();
1218             if (!( y < cellY || (y < cellY + cell->GetHeight() &&
1219                                  x < cell->GetPosX() + cell->GetWidth()) ))
1220                 continue;
1221
1222             c = cell->FindCellByPos(x - cell->GetPosX(), y - cellY, flags);
1223             if (c) return c;
1224         }
1225     }
1226     else if ( flags & wxHTML_FIND_NEAREST_BEFORE )
1227     {
1228         wxHtmlCell *c2, *c = NULL;
1229         for ( const wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext() )
1230         {
1231             if ( cell->IsFormattingCell() )
1232                 continue;
1233             int cellY = cell->GetPosY();
1234             if (!( cellY + cell->GetHeight() <= y ||
1235                    (y >= cellY && x >= cell->GetPosX()) ))
1236                 break;
1237             c2 = cell->FindCellByPos(x - cell->GetPosX(), y - cellY, flags);
1238             if (c2)
1239                 c = c2;
1240         }
1241         if (c) return c;
1242     }
1243
1244     return NULL;
1245 }
1246
1247
1248 bool wxHtmlContainerCell::ProcessMouseClick(wxHtmlWindowInterface *window,
1249                                             const wxPoint& pos,
1250                                             const wxMouseEvent& event)
1251 {
1252 #if WXWIN_COMPATIBILITY_2_6
1253     wxHtmlCellOnMouseClickCompatHelper compat(window, pos, event);
1254     return compat.CallOnMouseClick(this);
1255 }
1256
1257 void wxHtmlContainerCell::OnMouseClick(wxWindow*,
1258                                        int, int, const wxMouseEvent& event)
1259 {
1260     wxCHECK_RET( gs_helperOnMouseClick, _T("unexpected call to OnMouseClick") );
1261     wxHtmlWindowInterface *window = gs_helperOnMouseClick->window;
1262     const wxPoint& pos = gs_helperOnMouseClick->pos;
1263 #endif // WXWIN_COMPATIBILITY_2_6
1264
1265     bool retval = false;
1266     wxHtmlCell *cell = FindCellByPos(pos.x, pos.y);
1267     if ( cell )
1268         retval = cell->ProcessMouseClick(window, pos, event);
1269
1270 #if WXWIN_COMPATIBILITY_2_6
1271     gs_helperOnMouseClick->retval = retval;
1272 #else
1273     return retval;
1274 #endif // WXWIN_COMPATIBILITY_2_6
1275 }
1276
1277
1278 wxHtmlCell *wxHtmlContainerCell::GetFirstTerminal() const
1279 {
1280     if ( m_Cells )
1281     {
1282         wxHtmlCell *c2;
1283         for (wxHtmlCell *c = m_Cells; c; c = c->GetNext())
1284         {
1285             c2 = c->GetFirstTerminal();
1286             if ( c2 )
1287                 return c2;
1288         }
1289     }
1290     return NULL;
1291 }
1292
1293 wxHtmlCell *wxHtmlContainerCell::GetLastTerminal() const
1294 {
1295     if ( m_Cells )
1296     {
1297         // most common case first:
1298         wxHtmlCell *c = m_LastCell->GetLastTerminal();
1299         if ( c )
1300             return c;
1301
1302         wxHtmlCell *ctmp;
1303         wxHtmlCell *c2 = NULL;
1304         for (c = m_Cells; c; c = c->GetNext())
1305         {
1306             ctmp = c->GetLastTerminal();
1307             if ( ctmp )
1308                 c2 = ctmp;
1309         }
1310         return c2;
1311     }
1312     else
1313         return NULL;
1314 }
1315
1316
1317 static bool IsEmptyContainer(wxHtmlContainerCell *cell)
1318 {
1319     for ( wxHtmlCell *c = cell->GetFirstChild(); c; c = c->GetNext() )
1320     {
1321         if ( !c->IsTerminalCell() || !c->IsFormattingCell() )
1322             return false;
1323     }
1324     return true;
1325 }
1326
1327 void wxHtmlContainerCell::RemoveExtraSpacing(bool top, bool bottom)
1328 {
1329     if ( top )
1330         SetIndent(0, wxHTML_INDENT_TOP);
1331     if ( bottom )
1332         SetIndent(0, wxHTML_INDENT_BOTTOM);
1333
1334     if ( m_Cells )
1335     {
1336         wxHtmlCell *c;
1337         wxHtmlContainerCell *cont;
1338         if ( top )
1339         {
1340             for ( c = m_Cells; c; c = c->GetNext() )
1341             {
1342                 if ( c->IsTerminalCell() )
1343                 {
1344                     if ( !c->IsFormattingCell() )
1345                         break;
1346                 }
1347                 else
1348                 {
1349                     cont = (wxHtmlContainerCell*)c;
1350                     if ( IsEmptyContainer(cont) )
1351                     {
1352                         cont->SetIndent(0, wxHTML_INDENT_VERTICAL);
1353                     }
1354                     else
1355                     {
1356                         cont->RemoveExtraSpacing(true, false);
1357                         break;
1358                     }
1359                 }
1360             }
1361         }
1362
1363         if ( bottom )
1364         {
1365             wxArrayPtrVoid arr;
1366             for ( c = m_Cells; c; c = c->GetNext() )
1367                 arr.Add((void*)c);
1368
1369             for ( int i = arr.GetCount() - 1; i >= 0; i--)
1370             {
1371                 c = (wxHtmlCell*)arr[i];
1372                 if ( c->IsTerminalCell() )
1373                 {
1374                     if ( !c->IsFormattingCell() )
1375                         break;
1376                 }
1377                 else
1378                 {
1379                     cont = (wxHtmlContainerCell*)c;
1380                     if ( IsEmptyContainer(cont) )
1381                     {
1382                         cont->SetIndent(0, wxHTML_INDENT_VERTICAL);
1383                     }
1384                     else
1385                     {
1386                         cont->RemoveExtraSpacing(false, true);
1387                         break;
1388                     }
1389                 }
1390             }
1391         }
1392     }
1393 }
1394
1395
1396
1397
1398 // --------------------------------------------------------------------------
1399 // wxHtmlColourCell
1400 // --------------------------------------------------------------------------
1401
1402 IMPLEMENT_ABSTRACT_CLASS(wxHtmlColourCell, wxHtmlCell)
1403
1404 void wxHtmlColourCell::Draw(wxDC& dc,
1405                             int x, int y,
1406                             int WXUNUSED(view_y1), int WXUNUSED(view_y2),
1407                             wxHtmlRenderingInfo& info)
1408 {
1409     DrawInvisible(dc, x, y, info);
1410 }
1411
1412 void wxHtmlColourCell::DrawInvisible(wxDC& dc,
1413                                      int WXUNUSED(x), int WXUNUSED(y),
1414                                      wxHtmlRenderingInfo& info)
1415 {
1416     wxHtmlRenderingState& state = info.GetState();
1417     if (m_Flags & wxHTML_CLR_FOREGROUND)
1418     {
1419         state.SetFgColour(m_Colour);
1420         if (state.GetSelectionState() != wxHTML_SEL_IN)
1421             dc.SetTextForeground(m_Colour);
1422         else
1423             dc.SetTextForeground(
1424                     info.GetStyle().GetSelectedTextColour(m_Colour));
1425     }
1426     if (m_Flags & wxHTML_CLR_BACKGROUND)
1427     {
1428         state.SetBgColour(m_Colour);
1429         if (state.GetSelectionState() != wxHTML_SEL_IN)
1430         {
1431             dc.SetTextBackground(m_Colour);
1432             dc.SetBackground(wxBrush(m_Colour, wxSOLID));
1433         }
1434         else
1435         {
1436             wxColour c = info.GetStyle().GetSelectedTextBgColour(m_Colour);
1437             dc.SetTextBackground(c);
1438             dc.SetBackground(wxBrush(c, wxSOLID));
1439         }
1440     }
1441 }
1442
1443
1444
1445
1446 // ---------------------------------------------------------------------------
1447 // wxHtmlFontCell
1448 // ---------------------------------------------------------------------------
1449
1450 IMPLEMENT_ABSTRACT_CLASS(wxHtmlFontCell, wxHtmlCell)
1451
1452 void wxHtmlFontCell::Draw(wxDC& dc,
1453                           int WXUNUSED(x), int WXUNUSED(y),
1454                           int WXUNUSED(view_y1), int WXUNUSED(view_y2),
1455                           wxHtmlRenderingInfo& WXUNUSED(info))
1456 {
1457     dc.SetFont(m_Font);
1458 }
1459
1460 void wxHtmlFontCell::DrawInvisible(wxDC& dc, int WXUNUSED(x), int WXUNUSED(y),
1461                                    wxHtmlRenderingInfo& WXUNUSED(info))
1462 {
1463     dc.SetFont(m_Font);
1464 }
1465
1466
1467
1468
1469
1470
1471
1472
1473 // ---------------------------------------------------------------------------
1474 // wxHtmlWidgetCell
1475 // ---------------------------------------------------------------------------
1476
1477 IMPLEMENT_ABSTRACT_CLASS(wxHtmlWidgetCell, wxHtmlCell)
1478
1479 wxHtmlWidgetCell::wxHtmlWidgetCell(wxWindow *wnd, int w)
1480 {
1481     int sx, sy;
1482     m_Wnd = wnd;
1483     m_Wnd->GetSize(&sx, &sy);
1484     m_Width = sx, m_Height = sy;
1485     m_WidthFloat = w;
1486 }
1487
1488
1489 void wxHtmlWidgetCell::Draw(wxDC& WXUNUSED(dc),
1490                             int WXUNUSED(x), int WXUNUSED(y),
1491                             int WXUNUSED(view_y1), int WXUNUSED(view_y2),
1492                             wxHtmlRenderingInfo& WXUNUSED(info))
1493 {
1494     int absx = 0, absy = 0, stx, sty;
1495     wxHtmlCell *c = this;
1496
1497     while (c)
1498     {
1499         absx += c->GetPosX();
1500         absy += c->GetPosY();
1501         c = c->GetParent();
1502     }
1503
1504     ((wxScrolledWindow*)(m_Wnd->GetParent()))->GetViewStart(&stx, &sty);
1505     m_Wnd->SetSize(absx - wxHTML_SCROLL_STEP * stx, absy  - wxHTML_SCROLL_STEP * sty, m_Width, m_Height);
1506 }
1507
1508
1509
1510 void wxHtmlWidgetCell::DrawInvisible(wxDC& WXUNUSED(dc),
1511                                      int WXUNUSED(x), int WXUNUSED(y),
1512                                      wxHtmlRenderingInfo& WXUNUSED(info))
1513 {
1514     int absx = 0, absy = 0, stx, sty;
1515     wxHtmlCell *c = this;
1516
1517     while (c)
1518     {
1519         absx += c->GetPosX();
1520         absy += c->GetPosY();
1521         c = c->GetParent();
1522     }
1523
1524     ((wxScrolledWindow*)(m_Wnd->GetParent()))->GetViewStart(&stx, &sty);
1525     m_Wnd->SetSize(absx - wxHTML_SCROLL_STEP * stx, absy  - wxHTML_SCROLL_STEP * sty, m_Width, m_Height);
1526 }
1527
1528
1529
1530 void wxHtmlWidgetCell::Layout(int w)
1531 {
1532     if (m_WidthFloat != 0)
1533     {
1534         m_Width = (w * m_WidthFloat) / 100;
1535         m_Wnd->SetSize(m_Width, m_Height);
1536     }
1537
1538     wxHtmlCell::Layout(w);
1539 }
1540
1541
1542
1543 // ----------------------------------------------------------------------------
1544 // wxHtmlTerminalCellsInterator
1545 // ----------------------------------------------------------------------------
1546
1547 const wxHtmlCell* wxHtmlTerminalCellsInterator::operator++()
1548 {
1549     if ( !m_pos )
1550         return NULL;
1551
1552     do
1553     {
1554         if ( m_pos == m_to )
1555         {
1556             m_pos = NULL;
1557             return NULL;
1558         }
1559
1560         if ( m_pos->GetNext() )
1561             m_pos = m_pos->GetNext();
1562         else
1563         {
1564             // we must go up the hierarchy until we reach container where this
1565             // is not the last child, and then go down to first terminal cell:
1566             while ( m_pos->GetNext() == NULL )
1567             {
1568                 m_pos = m_pos->GetParent();
1569                 if ( !m_pos )
1570                     return NULL;
1571             }
1572             m_pos = m_pos->GetNext();
1573         }
1574         while ( m_pos->GetFirstChild() != NULL )
1575             m_pos = m_pos->GetFirstChild();
1576     } while ( !m_pos->IsTerminalCell() );
1577
1578     return m_pos;
1579 }
1580
1581 #endif