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     // if the selection is entirely within this cell, make sure pt1 < pt2 in
 390     // order to make the rest of this function simpler:
 391     if ( selFrom != wxDefaultPosition && selTo != wxDefaultPosition &&
 392          selFrom.x > selTo.x )
 393     {
 394         wxPoint tmp = pt1;
 395         pt1 = pt2;
 396         pt2 = tmp;
 397     }
 398
 399     unsigned len = m_Word.length();
 400     unsigned i = 0;
 401     pos1 = 0;
 402
 403     // adjust for cases when the start/end position is completely
 404     // outside the cell:
 405     if ( pt1.y < 0 )
 406         pt1.x = 0;
 407     if ( pt2.y >= m_Height )
 408         pt2.x = m_Width;
 409
 410     // before selection:
 411 #ifdef __WXMAC__
 412     // implementation using PartialExtents to support fractional widths
 413     wxArrayInt widths ;
 414     dc.GetPartialTextExtents(m_Word,widths) ;
 415     while( i < len && pt1.x >= widths[i] )
 416         i++ ;
 417 #else // __WXMAC__
 418     wxCoord charW, charH;
 419     while ( pt1.x > 0 && i < len )
 420     {
 421         dc.GetTextExtent(m_Word[i], &charW, &charH);
 422         pt1.x -= charW;
 423         if ( pt1.x >= 0 )
 424         {
 425             pos1 += charW;
 426             i++;
 427         }
 428     }
 429 #endif // __WXMAC__/!__WXMAC__
 430
 431     // in selection:
 432     unsigned j = i;
 433 #ifdef __WXMAC__
 434     while( j < len && pt2.x >= widths[j] )
 435         j++ ;
 436 #else // __WXMAC__
 437     pos2 = pos1;
 438     pt2.x -= pos2;
 439     while ( pt2.x > 0 && j < len )
 440     {
 441         dc.GetTextExtent(m_Word[j], &charW, &charH);
 442         pt2.x -= charW;
 443         if ( pt2.x >= 0 )
 444         {
 445             pos2 += charW;
 446             j++;
 447         }
 448     }
 449 #endif // __WXMAC__/!__WXMAC__
 450
 451     pos1 = i;
 452     pos2 = j;
 453 }
 454
 455 void wxHtmlWordCell::SetSelectionPrivPos(const wxDC& dc, wxHtmlSelection *s) const
 456 {
 457     unsigned p1, p2;
 458
 459     Split(dc,
 460           this == s->GetFromCell() ? s->GetFromPos() : wxDefaultPosition,
 461           this == s->GetToCell() ? s->GetToPos() : wxDefaultPosition,
 462           p1, p2);
 463
 464     wxPoint p(0, m_Word.length());
 465
 466     if ( this == s->GetFromCell() )
 467         p.x = p1; // selection starts here
 468     if ( this == s->GetToCell() )
 469         p.y = p2; // selection ends here
 470
 471     if ( this == s->GetFromCell() )
 472         s->SetFromPrivPos(p);
 473     if ( this == s->GetToCell() )
 474         s->SetToPrivPos(p);
 475 }
 476
 477
 478 static void SwitchSelState(wxDC& dc, wxHtmlRenderingInfo& info,
 479                            bool toSelection)
 480 {
 481     wxColour fg = info.GetState().GetFgColour();
 482     wxColour bg = info.GetState().GetBgColour();
 483
 484     if ( toSelection )
 485     {
 486         dc.SetBackgroundMode(wxSOLID);
 487         dc.SetTextForeground(info.GetStyle().GetSelectedTextColour(fg));
 488         dc.SetTextBackground(info.GetStyle().GetSelectedTextBgColour(bg));
 489         dc.SetBackground(wxBrush(info.GetStyle().GetSelectedTextBgColour(bg),
 490                                  wxSOLID));
 491     }
 492     else
 493     {
 494         dc.SetBackgroundMode(wxTRANSPARENT);
 495         dc.SetTextForeground(fg);
 496         dc.SetTextBackground(bg);
 497         dc.SetBackground(wxBrush(bg, wxSOLID));
 498     }
 499 }
 500
 501
 502 void wxHtmlWordCell::Draw(wxDC& dc, int x, int y,
 503                           int WXUNUSED(view_y1), int WXUNUSED(view_y2),
 504                           wxHtmlRenderingInfo& info)
 505 {
 506 #if 0 // useful for debugging
 507     dc.SetPen(*wxBLACK_PEN);
 508     dc.DrawRectangle(x+m_PosX,y+m_PosY,m_Width /* VZ: +1? */ ,m_Height);
 509 #endif
 510
 511     bool drawSelectionAfterCell = false;
 512
 513     if ( info.GetState().GetSelectionState() == wxHTML_SEL_CHANGING )
 514     {
 515         // Selection changing, we must draw the word piecewise:
 516         wxHtmlSelection *s = info.GetSelection();
 517         wxString txt;
 518         int w, h;
 519         int ofs = 0;
 520
 521         wxPoint priv = (this == s->GetFromCell()) ?
 522                            s->GetFromPrivPos() : s->GetToPrivPos();
 523
 524         // NB: this is quite a hack: in order to compute selection boundaries
 525         //     (in word's characters) we must know current font, which is only
 526         //     possible inside rendering code. Therefore we update the
 527         //     information here and store it in wxHtmlSelection so that
 528         //     ConvertToText can use it later:
 529         if ( priv == wxDefaultPosition )
 530         {
 531             SetSelectionPrivPos(dc, s);
 532             priv = (this == s->GetFromCell()) ?
 533                     s->GetFromPrivPos() : s->GetToPrivPos();
 534         }
 535
 536         int part1 = priv.x;
 537         int part2 = priv.y;
 538
 539         if ( part1 > 0 )
 540         {
 541             txt = m_Word.Mid(0, part1);
 542             dc.DrawText(txt, x + m_PosX, y + m_PosY);
 543             dc.GetTextExtent(txt, &w, &h);
 544             ofs += w;
 545         }
 546
 547         SwitchSelState(dc, info, true);
 548
 549         txt = m_Word.Mid(part1, part2-part1);
 550         dc.DrawText(txt, ofs + x + m_PosX, y + m_PosY);
 551
 552         if ( (size_t)part2 < m_Word.length() )
 553         {
 554             dc.GetTextExtent(txt, &w, &h);
 555             ofs += w;
 556             SwitchSelState(dc, info, false);
 557             txt = m_Word.Mid(part2);
 558             dc.DrawText(txt, ofs + x + m_PosX, y + m_PosY);
 559         }
 560         else
 561             drawSelectionAfterCell = true;
 562     }
 563     else
 564     {
 565         wxHtmlSelectionState selstate = info.GetState().GetSelectionState();
 566         // Not changing selection state, draw the word in single mode:
 567         if ( selstate != wxHTML_SEL_OUT &&
 568              dc.GetBackgroundMode() != wxSOLID )
 569         {
 570             SwitchSelState(dc, info, true);
 571         }
 572         else if ( selstate == wxHTML_SEL_OUT &&
 573                   dc.GetBackgroundMode() == wxSOLID )
 574         {
 575             SwitchSelState(dc, info, false);
 576         }
 577         dc.DrawText(m_Word, x + m_PosX, y + m_PosY);
 578         drawSelectionAfterCell = (selstate != wxHTML_SEL_OUT);
 579     }
 580
 581     // NB: If the text is justified then there is usually some free space
 582     //     between adjacent cells and drawing the selection only onto cells
 583     //     would result in ugly unselected spaces. The code below detects
 584     //     this special case and renders the selection *outside* the sell,
 585     //     too.
 586     if ( m_Parent->GetAlignHor() == wxHTML_ALIGN_JUSTIFY &&
 587          drawSelectionAfterCell )
 588     {
 589         wxHtmlCell *nextCell = m_Next;
 590         while ( nextCell && nextCell->IsFormattingCell() )
 591             nextCell = nextCell->GetNext();
 592         if ( nextCell )
 593         {
 594             int nextX = nextCell->GetPosX();
 595             if ( m_PosX + m_Width < nextX )
 596             {
 597                 dc.SetBrush(dc.GetBackground());
 598                 dc.SetPen(*wxTRANSPARENT_PEN);
 599                 dc.DrawRectangle(x + m_PosX + m_Width, y + m_PosY,
 600                                  nextX - m_PosX - m_Width, m_Height);
 601             }
 602         }
 603     }
 604 }
 605
 606
 607 wxString wxHtmlWordCell::ConvertToText(wxHtmlSelection *s) const
 608 {
 609     if ( s && (this == s->GetFromCell() || this == s->GetToCell()) )
 610     {
 611         wxPoint priv = this == s->GetFromCell() ? s->GetFromPrivPos()
 612                                                 : s->GetToPrivPos();
 613
 614         // VZ: we may be called before we had a chance to re-render ourselves
 615         //     and in this case GetFrom/ToPrivPos() is not set yet -- assume
 616         //     that this only happens in case of a double/triple click (which
 617         //     seems to be the case now) and so it makes sense to select the
 618         //     entire contents of the cell in this case
 619         //
 620         // TODO: but this really needs to be fixed in some better way later...
 621         if ( priv != wxDefaultPosition )
 622         {
 623             int part1 = priv.x;
 624             int part2 = priv.y;
 625             return m_Word.Mid(part1, part2-part1);
 626         }
 627         //else: return the whole word below
 628     }
 629
 630     return m_Word;
 631 }
 632
 633 wxCursor wxHtmlWordCell::GetMouseCursor(wxHtmlWindowInterface *window) const
 634 {
 635     if ( !GetLink() )
 636     {
 637         return window->GetHTMLCursor(wxHtmlWindowInterface::HTMLCursor_Text);
 638     }
 639     else
 640     {
 641         return wxHtmlCell::GetMouseCursor(window);
 642     }
 643 }
 644
 645
 646 //-----------------------------------------------------------------------------
 647 // wxHtmlContainerCell
 648 //-----------------------------------------------------------------------------
 649
 650 IMPLEMENT_ABSTRACT_CLASS(wxHtmlContainerCell, wxHtmlCell)
 651
 652 wxHtmlContainerCell::wxHtmlContainerCell(wxHtmlContainerCell *parent) : wxHtmlCell()
 653 {
 654     m_Cells = m_LastCell = NULL;
 655     m_Parent = parent;
 656     m_MaxTotalWidth = 0;
 657     if (m_Parent) m_Parent->InsertCell(this);
 658     m_AlignHor = wxHTML_ALIGN_LEFT;
 659     m_AlignVer = wxHTML_ALIGN_BOTTOM;
 660     m_IndentLeft = m_IndentRight = m_IndentTop = m_IndentBottom = 0;
 661     m_WidthFloat = 100; m_WidthFloatUnits = wxHTML_UNITS_PERCENT;
 662     m_UseBkColour = false;
 663     m_UseBorder = false;
 664     m_MinHeight = 0;
 665     m_MinHeightAlign = wxHTML_ALIGN_TOP;
 666     m_LastLayout = -1;
 667 }
 668
 669 wxHtmlContainerCell::~wxHtmlContainerCell()
 670 {
 671     wxHtmlCell *cell = m_Cells;
 672     while ( cell )
 673     {
 674         wxHtmlCell *cellNext = cell->GetNext();
 675         delete cell;
 676         cell = cellNext;
 677     }
 678 }
 679
 680
 681
 682 void wxHtmlContainerCell::SetIndent(int i, int what, int units)
 683 {
 684     int val = (units == wxHTML_UNITS_PIXELS) ? i : -i;
 685     if (what & wxHTML_INDENT_LEFT) m_IndentLeft = val;
 686     if (what & wxHTML_INDENT_RIGHT) m_IndentRight = val;
 687     if (what & wxHTML_INDENT_TOP) m_IndentTop = val;
 688     if (what & wxHTML_INDENT_BOTTOM) m_IndentBottom = val;
 689     m_LastLayout = -1;
 690 }
 691
 692
 693
 694 int wxHtmlContainerCell::GetIndent(int ind) const
 695 {
 696     if (ind & wxHTML_INDENT_LEFT) return m_IndentLeft;
 697     else if (ind & wxHTML_INDENT_RIGHT) return m_IndentRight;
 698     else if (ind & wxHTML_INDENT_TOP) return m_IndentTop;
 699     else if (ind & wxHTML_INDENT_BOTTOM) return m_IndentBottom;
 700     else return -1; /* BUG! Should not be called... */
 701 }
 702
 703
 704
 705
 706 int wxHtmlContainerCell::GetIndentUnits(int ind) const
 707 {
 708     bool p = false;
 709     if (ind & wxHTML_INDENT_LEFT) p = m_IndentLeft < 0;
 710     else if (ind & wxHTML_INDENT_RIGHT) p = m_IndentRight < 0;
 711     else if (ind & wxHTML_INDENT_TOP) p = m_IndentTop < 0;
 712     else if (ind & wxHTML_INDENT_BOTTOM) p = m_IndentBottom < 0;
 713     if (p) return wxHTML_UNITS_PERCENT;
 714     else return wxHTML_UNITS_PIXELS;
 715 }
 716
 717
 718 bool wxHtmlContainerCell::AdjustPagebreak(int *pagebreak,
 719                                           wxArrayInt& known_pagebreaks) const
 720 {
 721     if (!m_CanLiveOnPagebreak)
 722         return wxHtmlCell::AdjustPagebreak(pagebreak, known_pagebreaks);
 723
 724     wxHtmlCell *c = GetFirstChild();
 725     bool rt = false;
 726     int pbrk = *pagebreak - m_PosY;
 727
 728     while (c)
 729     {
 730         if (c->AdjustPagebreak(&pbrk, known_pagebreaks))
 731             rt = true;
 732         c = c->GetNext();
 733     }
 734     if (rt)
 735         *pagebreak = pbrk + m_PosY;
 736     return rt;
 737 }
 738
 739
 740 void wxHtmlContainerCell::Layout(int w)
 741 {
 742     wxHtmlCell::Layout(w);
 743
 744     if (m_LastLayout == w) return;
 745
 746     // VS: Any attempt to layout with negative or zero width leads to hell,
 747     // but we can't ignore such attempts completely, since it sometimes
 748     // happen (e.g. when trying how small a table can be). The best thing we
 749     // can do is to set the width of child cells to zero
 750     if (w < 1)
 751     {
 752        m_Width = 0;
 753        for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
 754             cell->Layout(0);
 755             // this does two things: it recursively calls this code on all
 756             // child contrainers and resets children's position to (0,0)
 757        return;
 758     }
 759
 760     wxHtmlCell *nextCell;
 761     long xpos = 0, ypos = m_IndentTop;
 762     int xdelta = 0, ybasicpos = 0, ydiff;
 763     int s_width, nextWordWidth, s_indent;
 764     int ysizeup = 0, ysizedown = 0;
 765     int MaxLineWidth = 0;
 766     int curLineWidth = 0;
 767     m_MaxTotalWidth = 0;
 768
 769
 770     /*
 771
 772     WIDTH ADJUSTING :
 773
 774     */
 775
 776     if (m_WidthFloatUnits == wxHTML_UNITS_PERCENT)
 777     {
 778         if (m_WidthFloat < 0) m_Width = (100 + m_WidthFloat) * w / 100;
 779         else m_Width = m_WidthFloat * w / 100;
 780     }
 781     else
 782     {
 783         if (m_WidthFloat < 0) m_Width = w + m_WidthFloat;
 784         else m_Width = m_WidthFloat;
 785     }
 786
 787     if (m_Cells)
 788     {
 789         int l = (m_IndentLeft < 0) ? (-m_IndentLeft * m_Width / 100) : m_IndentLeft;
 790         int r = (m_IndentRight < 0) ? (-m_IndentRight * m_Width / 100) : m_IndentRight;
 791         for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
 792             cell->Layout(m_Width - (l + r));
 793     }
 794
 795     /*
 796
 797     LAYOUTING :
 798
 799     */
 800
 801     // adjust indentation:
 802     s_indent = (m_IndentLeft < 0) ? (-m_IndentLeft * m_Width / 100) : m_IndentLeft;
 803     s_width = m_Width - s_indent - ((m_IndentRight < 0) ? (-m_IndentRight * m_Width / 100) : m_IndentRight);
 804
 805     // my own layouting:
 806     wxHtmlCell *cell = m_Cells,
 807                *line = m_Cells;
 808     while (cell != NULL)
 809     {
 810         switch (m_AlignVer)
 811         {
 812             case wxHTML_ALIGN_TOP :      ybasicpos = 0; break;
 813             case wxHTML_ALIGN_BOTTOM :   ybasicpos = - cell->GetHeight(); break;
 814             case wxHTML_ALIGN_CENTER :   ybasicpos = - cell->GetHeight() / 2; break;
 815         }
 816         ydiff = cell->GetHeight() + ybasicpos;
 817
 818         if (cell->GetDescent() + ydiff > ysizedown) ysizedown = cell->GetDescent() + ydiff;
 819         if (ybasicpos + cell->GetDescent() < -ysizeup) ysizeup = - (ybasicpos + cell->GetDescent());
 820
 821         // layout nonbreakable run of cells:
 822         cell->SetPos(xpos, ybasicpos + cell->GetDescent());
 823         xpos += cell->GetWidth();
 824         if (!cell->IsTerminalCell())
 825         {
 826             // Container cell indicates new line
 827             if (curLineWidth > m_MaxTotalWidth)
 828                 m_MaxTotalWidth = curLineWidth;
 829
 830             if (wxMax(cell->GetWidth(), cell->GetMaxTotalWidth()) > m_MaxTotalWidth)
 831                 m_MaxTotalWidth = cell->GetMaxTotalWidth();
 832             curLineWidth = 0;
 833         }
 834         else
 835             // Normal cell, add maximum cell width to line width
 836             curLineWidth += cell->GetMaxTotalWidth();
 837
 838         cell = cell->GetNext();
 839
 840         // compute length of the next word that would be added:
 841         nextWordWidth = 0;
 842         if (cell)
 843         {
 844             nextCell = cell;
 845             do
 846             {
 847                 nextWordWidth += nextCell->GetWidth();
 848                 nextCell = nextCell->GetNext();
 849             } while (nextCell && !nextCell->IsLinebreakAllowed());
 850         }
 851
 852         // force new line if occurred:
 853         if ((cell == NULL) ||
 854             (xpos + nextWordWidth > s_width && cell->IsLinebreakAllowed()))
 855         {
 856             if (xpos > MaxLineWidth) MaxLineWidth = xpos;
 857             if (ysizeup < 0) ysizeup = 0;
 858             if (ysizedown < 0) ysizedown = 0;
 859             switch (m_AlignHor) {
 860                 case wxHTML_ALIGN_LEFT :
 861                 case wxHTML_ALIGN_JUSTIFY :
 862                          xdelta = 0;
 863                          break;
 864                 case wxHTML_ALIGN_RIGHT :
 865                          xdelta = 0 + (s_width - xpos);
 866                          break;
 867                 case wxHTML_ALIGN_CENTER :
 868                          xdelta = 0 + (s_width - xpos) / 2;
 869                          break;
 870             }
 871             if (xdelta < 0) xdelta = 0;
 872             xdelta += s_indent;
 873
 874             ypos += ysizeup;
 875
 876             if (m_AlignHor != wxHTML_ALIGN_JUSTIFY || cell == NULL)
 877             {
 878                 while (line != cell)
 879                 {
 880                     line->SetPos(line->GetPosX() + xdelta,
 881                                    ypos + line->GetPosY());
 882                     line = line->GetNext();
 883                 }
 884             }
 885             else // align == justify
 886             {
 887                 // we have to distribute the extra horz space between the cells
 888                 // on this line
 889
 890                 // an added complication is that some cells have fixed size and
 891                 // shouldn't get any increment (it so happens that these cells
 892                 // also don't allow line break on them which provides with an
 893                 // easy way to test for this) -- and neither should the cells
 894                 // adjacent to them as this could result in a visible space
 895                 // between two cells separated by, e.g. font change, cell which
 896                 // is wrong
 897
 898                 int step = s_width - xpos;
 899                 if ( step > 0 )
 900                 {
 901                     // first count the cells which will get extra space
 902                     int total = -1;
 903
 904                     const wxHtmlCell *c;
 905                     if ( line != cell )
 906                     {
 907                         for ( c = line; c != cell; c = c->GetNext() )
 908                         {
 909                             if ( c->IsLinebreakAllowed() )
 910                             {
 911                                 total++;
 912                             }
 913                         }
 914                     }
 915
 916                     // and now extra space to those cells which merit it
 917                     if ( total )
 918                     {
 919                         // first visible cell on line is not moved:
 920                         while (line !=cell && !line->IsLinebreakAllowed())
 921                         {
 922                             line->SetPos(line->GetPosX() + s_indent,
 923                                          line->GetPosY() + ypos);
 924                             line = line->GetNext();
 925                         }
 926
 927                         if (line != cell)
 928                         {
 929                             line->SetPos(line->GetPosX() + s_indent,
 930                                          line->GetPosY() + ypos);
 931
 932                             line = line->GetNext();
 933                         }
 934
 935                         for ( int n = 0; line != cell; line = line->GetNext() )
 936                         {
 937                             if ( line->IsLinebreakAllowed() )
 938                             {
 939                                 // offset the next cell relative to this one
 940                                 // thus increasing our size
 941                                 n++;
 942                             }
 943
 944                             line->SetPos(line->GetPosX() + s_indent +
 945                                            ((n * step) / total),
 946                                            line->GetPosY() + ypos);
 947                         }
 948                     }
 949                     else
 950                     {
 951                         // this will cause the code to enter "else branch" below:
 952                         step = 0;
 953                     }
 954                 }
 955                 // else branch:
 956                 if ( step <= 0 ) // no extra space to distribute
 957                 {
 958                     // just set the indent properly
 959                     while (line != cell)
 960                     {
 961                         line->SetPos(line->GetPosX() + s_indent,
 962                                      line->GetPosY() + ypos);
 963                         line = line->GetNext();
 964                     }
 965                 }
 966             }
 967
 968             ypos += ysizedown;
 969             xpos = 0;
 970             ysizeup = ysizedown = 0;
 971             line = cell;
 972         }
 973     }
 974
 975     // setup height & width, depending on container layout:
 976     m_Height = ypos + (ysizedown + ysizeup) + m_IndentBottom;
 977
 978     if (m_Height < m_MinHeight)
 979     {
 980         if (m_MinHeightAlign != wxHTML_ALIGN_TOP)
 981         {
 982             int diff = m_MinHeight - m_Height;
 983             if (m_MinHeightAlign == wxHTML_ALIGN_CENTER) diff /= 2;
 984             cell = m_Cells;
 985             while (cell)
 986             {
 987                 cell->SetPos(cell->GetPosX(), cell->GetPosY() + diff);
 988                 cell = cell->GetNext();
 989             }
 990         }
 991         m_Height = m_MinHeight;
 992     }
 993
 994     if (curLineWidth > m_MaxTotalWidth)
 995         m_MaxTotalWidth = curLineWidth;
 996
 997     m_MaxTotalWidth += s_indent + ((m_IndentRight < 0) ? (-m_IndentRight * m_Width / 100) : m_IndentRight);
 998     MaxLineWidth += s_indent + ((m_IndentRight < 0) ? (-m_IndentRight * m_Width / 100) : m_IndentRight);
 999     if (m_Width < MaxLineWidth) m_Width = MaxLineWidth;
1000
1001     m_LastLayout = w;
1002 }
1003
1004 void wxHtmlContainerCell::UpdateRenderingStatePre(wxHtmlRenderingInfo& info,
1005                                                   wxHtmlCell *cell) const
1006 {
1007     wxHtmlSelection *s = info.GetSelection();
1008     if (!s) return;
1009     if (s->GetFromCell() == cell || s->GetToCell() == cell)
1010     {
1011         info.GetState().SetSelectionState(wxHTML_SEL_CHANGING);
1012     }
1013 }
1014
1015 void wxHtmlContainerCell::UpdateRenderingStatePost(wxHtmlRenderingInfo& info,
1016                                                    wxHtmlCell *cell) const
1017 {
1018     wxHtmlSelection *s = info.GetSelection();
1019     if (!s) return;
1020     if (s->GetToCell() == cell)
1021         info.GetState().SetSelectionState(wxHTML_SEL_OUT);
1022     else if (s->GetFromCell() == cell)
1023         info.GetState().SetSelectionState(wxHTML_SEL_IN);
1024 }
1025
1026 #define mMin(a, b) (((a) < (b)) ? (a) : (b))
1027 #define mMax(a, b) (((a) < (b)) ? (b) : (a))
1028
1029 void wxHtmlContainerCell::Draw(wxDC& dc, int x, int y, int view_y1, int view_y2,
1030                                wxHtmlRenderingInfo& info)
1031 {
1032 #if 0 // useful for debugging
1033     dc.SetPen(*wxRED_PEN);
1034     dc.DrawRectangle(x+m_PosX,y+m_PosY,m_Width,m_Height);
1035 #endif
1036
1037     int xlocal = x + m_PosX;
1038     int ylocal = y + m_PosY;
1039
1040     if (m_UseBkColour)
1041     {
1042         wxBrush myb = wxBrush(m_BkColour, wxSOLID);
1043
1044         int real_y1 = mMax(ylocal, view_y1);
1045         int real_y2 = mMin(ylocal + m_Height - 1, view_y2);
1046
1047         dc.SetBrush(myb);
1048         dc.SetPen(*wxTRANSPARENT_PEN);
1049         dc.DrawRectangle(xlocal, real_y1, m_Width, real_y2 - real_y1 + 1);
1050     }
1051
1052     if (m_UseBorder)
1053     {
1054         wxPen mypen1(m_BorderColour1, 1, wxSOLID);
1055         wxPen mypen2(m_BorderColour2, 1, wxSOLID);
1056
1057         dc.SetPen(mypen1);
1058         dc.DrawLine(xlocal, ylocal, xlocal, ylocal + m_Height - 1);
1059         dc.DrawLine(xlocal, ylocal, xlocal + m_Width, ylocal);
1060         dc.SetPen(mypen2);
1061         dc.DrawLine(xlocal + m_Width - 1, ylocal, xlocal +  m_Width - 1, ylocal + m_Height - 1);
1062         dc.DrawLine(xlocal, ylocal + m_Height - 1, xlocal + m_Width, ylocal + m_Height - 1);
1063     }
1064
1065     if (m_Cells)
1066     {
1067         // draw container's contents:
1068         for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
1069         {
1070
1071             // optimize drawing: don't render off-screen content:
1072             if ((ylocal + cell->GetPosY() <= view_y2) &&
1073                 (ylocal + cell->GetPosY() + cell->GetHeight() > view_y1))
1074             {
1075                 // the cell is visible, draw it:
1076                 UpdateRenderingStatePre(info, cell);
1077                 cell->Draw(dc,
1078                            xlocal, ylocal, view_y1, view_y2,
1079                            info);
1080                 UpdateRenderingStatePost(info, cell);
1081             }
1082             else
1083             {
1084                 // the cell is off-screen, proceed with font+color+etc.
1085                 // changes only:
1086                 cell->DrawInvisible(dc, xlocal, ylocal, info);
1087             }
1088         }
1089     }
1090 }
1091
1092
1093
1094 void wxHtmlContainerCell::DrawInvisible(wxDC& dc, int x, int y,
1095                                         wxHtmlRenderingInfo& info)
1096 {
1097     if (m_Cells)
1098     {
1099         for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
1100         {
1101             UpdateRenderingStatePre(info, cell);
1102             cell->DrawInvisible(dc, x + m_PosX, y + m_PosY, info);
1103             UpdateRenderingStatePost(info, cell);
1104         }
1105     }
1106 }
1107
1108
1109 wxColour wxHtmlContainerCell::GetBackgroundColour()
1110 {
1111     if (m_UseBkColour)
1112         return m_BkColour;
1113     else
1114         return wxNullColour;
1115 }
1116
1117
1118
1119 wxHtmlLinkInfo *wxHtmlContainerCell::GetLink(int x, int y) const
1120 {
1121     wxHtmlCell *cell = FindCellByPos(x, y);
1122
1123     // VZ: I don't know if we should pass absolute or relative coords to
1124     //     wxHtmlCell::GetLink()? As the base class version just ignores them
1125     //     anyhow, it hardly matters right now but should still be clarified
1126     return cell ? cell->GetLink(x, y) : NULL;
1127 }
1128
1129
1130
1131 void wxHtmlContainerCell::InsertCell(wxHtmlCell *f)
1132 {
1133     if (!m_Cells) m_Cells = m_LastCell = f;
1134     else
1135     {
1136         m_LastCell->SetNext(f);
1137         m_LastCell = f;
1138         if (m_LastCell) while (m_LastCell->GetNext()) m_LastCell = m_LastCell->GetNext();
1139     }
1140     f->SetParent(this);
1141     m_LastLayout = -1;
1142 }
1143
1144
1145
1146 void wxHtmlContainerCell::SetAlign(const wxHtmlTag& tag)
1147 {
1148     if (tag.HasParam(wxT("ALIGN")))
1149     {
1150         wxString alg = tag.GetParam(wxT("ALIGN"));
1151         alg.MakeUpper();
1152         if (alg == wxT("CENTER"))
1153             SetAlignHor(wxHTML_ALIGN_CENTER);
1154         else if (alg == wxT("LEFT"))
1155             SetAlignHor(wxHTML_ALIGN_LEFT);
1156         else if (alg == wxT("JUSTIFY"))
1157             SetAlignHor(wxHTML_ALIGN_JUSTIFY);
1158         else if (alg == wxT("RIGHT"))
1159             SetAlignHor(wxHTML_ALIGN_RIGHT);
1160         m_LastLayout = -1;
1161     }
1162 }
1163
1164
1165
1166 void wxHtmlContainerCell::SetWidthFloat(const wxHtmlTag& tag, double pixel_scale)
1167 {
1168     if (tag.HasParam(wxT("WIDTH")))
1169     {
1170         int wdi;
1171         wxString wd = tag.GetParam(wxT("WIDTH"));
1172
1173         if (wd[wd.length()-1] == wxT('%'))
1174         {
1175             wxSscanf(wd.c_str(), wxT("%i%%"), &wdi);
1176             SetWidthFloat(wdi, wxHTML_UNITS_PERCENT);
1177         }
1178         else
1179         {
1180             wxSscanf(wd.c_str(), wxT("%i"), &wdi);
1181             SetWidthFloat((int)(pixel_scale * (double)wdi), wxHTML_UNITS_PIXELS);
1182         }
1183         m_LastLayout = -1;
1184     }
1185 }
1186
1187
1188
1189 const wxHtmlCell* wxHtmlContainerCell::Find(int condition, const void* param) const
1190 {
1191     if (m_Cells)
1192     {
1193         for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
1194         {
1195             const wxHtmlCell *r = cell->Find(condition, param);
1196             if (r) return r;
1197         }
1198     }
1199     return NULL;
1200 }
1201
1202
1203 wxHtmlCell *wxHtmlContainerCell::FindCellByPos(wxCoord x, wxCoord y,
1204                                                unsigned flags) const
1205 {
1206     if ( flags & wxHTML_FIND_EXACT )
1207     {
1208         for ( const wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext() )
1209         {
1210             int cx = cell->GetPosX(),
1211                 cy = cell->GetPosY();
1212
1213             if ( (cx <= x) && (cx + cell->GetWidth() > x) &&
1214                  (cy <= y) && (cy + cell->GetHeight() > y) )
1215             {
1216                 return cell->FindCellByPos(x - cx, y - cy, flags);
1217             }
1218         }
1219     }
1220     else if ( flags & wxHTML_FIND_NEAREST_AFTER )
1221     {
1222         wxHtmlCell *c;
1223         for ( const wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext() )
1224         {
1225             if ( cell->IsFormattingCell() )
1226                 continue;
1227             int cellY = cell->GetPosY();
1228             if (!( y < cellY || (y < cellY + cell->GetHeight() &&
1229                                  x < cell->GetPosX() + cell->GetWidth()) ))
1230                 continue;
1231
1232             c = cell->FindCellByPos(x - cell->GetPosX(), y - cellY, flags);
1233             if (c) return c;
1234         }
1235     }
1236     else if ( flags & wxHTML_FIND_NEAREST_BEFORE )
1237     {
1238         wxHtmlCell *c2, *c = NULL;
1239         for ( const wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext() )
1240         {
1241             if ( cell->IsFormattingCell() )
1242                 continue;
1243             int cellY = cell->GetPosY();
1244             if (!( cellY + cell->GetHeight() <= y ||
1245                    (y >= cellY && x >= cell->GetPosX()) ))
1246                 break;
1247             c2 = cell->FindCellByPos(x - cell->GetPosX(), y - cellY, flags);
1248             if (c2)
1249                 c = c2;
1250         }
1251         if (c) return c;
1252     }
1253
1254     return NULL;
1255 }
1256
1257
1258 bool wxHtmlContainerCell::ProcessMouseClick(wxHtmlWindowInterface *window,
1259                                             const wxPoint& pos,
1260                                             const wxMouseEvent& event)
1261 {
1262 #if WXWIN_COMPATIBILITY_2_6
1263     wxHtmlCellOnMouseClickCompatHelper compat(window, pos, event);
1264     return compat.CallOnMouseClick(this);
1265 }
1266
1267 void wxHtmlContainerCell::OnMouseClick(wxWindow*,
1268                                        int, int, const wxMouseEvent& event)
1269 {
1270     wxCHECK_RET( gs_helperOnMouseClick, _T("unexpected call to OnMouseClick") );
1271     wxHtmlWindowInterface *window = gs_helperOnMouseClick->window;
1272     const wxPoint& pos = gs_helperOnMouseClick->pos;
1273 #endif // WXWIN_COMPATIBILITY_2_6
1274
1275     bool retval = false;
1276     wxHtmlCell *cell = FindCellByPos(pos.x, pos.y);
1277     if ( cell )
1278         retval = cell->ProcessMouseClick(window, pos, event);
1279
1280 #if WXWIN_COMPATIBILITY_2_6
1281     gs_helperOnMouseClick->retval = retval;
1282 #else
1283     return retval;
1284 #endif // WXWIN_COMPATIBILITY_2_6
1285 }
1286
1287
1288 wxHtmlCell *wxHtmlContainerCell::GetFirstTerminal() const
1289 {
1290     if ( m_Cells )
1291     {
1292         wxHtmlCell *c2;
1293         for (wxHtmlCell *c = m_Cells; c; c = c->GetNext())
1294         {
1295             c2 = c->GetFirstTerminal();
1296             if ( c2 )
1297                 return c2;
1298         }
1299     }
1300     return NULL;
1301 }
1302
1303 wxHtmlCell *wxHtmlContainerCell::GetLastTerminal() const
1304 {
1305     if ( m_Cells )
1306     {
1307         // most common case first:
1308         wxHtmlCell *c = m_LastCell->GetLastTerminal();
1309         if ( c )
1310             return c;
1311
1312         wxHtmlCell *ctmp;
1313         wxHtmlCell *c2 = NULL;
1314         for (c = m_Cells; c; c = c->GetNext())
1315         {
1316             ctmp = c->GetLastTerminal();
1317             if ( ctmp )
1318                 c2 = ctmp;
1319         }
1320         return c2;
1321     }
1322     else
1323         return NULL;
1324 }
1325
1326
1327 static bool IsEmptyContainer(wxHtmlContainerCell *cell)
1328 {
1329     for ( wxHtmlCell *c = cell->GetFirstChild(); c; c = c->GetNext() )
1330     {
1331         if ( !c->IsTerminalCell() || !c->IsFormattingCell() )
1332             return false;
1333     }
1334     return true;
1335 }
1336
1337 void wxHtmlContainerCell::RemoveExtraSpacing(bool top, bool bottom)
1338 {
1339     if ( top )
1340         SetIndent(0, wxHTML_INDENT_TOP);
1341     if ( bottom )
1342         SetIndent(0, wxHTML_INDENT_BOTTOM);
1343
1344     if ( m_Cells )
1345     {
1346         wxHtmlCell *c;
1347         wxHtmlContainerCell *cont;
1348         if ( top )
1349         {
1350             for ( c = m_Cells; c; c = c->GetNext() )
1351             {
1352                 if ( c->IsTerminalCell() )
1353                 {
1354                     if ( !c->IsFormattingCell() )
1355                         break;
1356                 }
1357                 else
1358                 {
1359                     cont = (wxHtmlContainerCell*)c;
1360                     if ( IsEmptyContainer(cont) )
1361                     {
1362                         cont->SetIndent(0, wxHTML_INDENT_VERTICAL);
1363                     }
1364                     else
1365                     {
1366                         cont->RemoveExtraSpacing(true, false);
1367                         break;
1368                     }
1369                 }
1370             }
1371         }
1372
1373         if ( bottom )
1374         {
1375             wxArrayPtrVoid arr;
1376             for ( c = m_Cells; c; c = c->GetNext() )
1377                 arr.Add((void*)c);
1378
1379             for ( int i = arr.GetCount() - 1; i >= 0; i--)
1380             {
1381                 c = (wxHtmlCell*)arr[i];
1382                 if ( c->IsTerminalCell() )
1383                 {
1384                     if ( !c->IsFormattingCell() )
1385                         break;
1386                 }
1387                 else
1388                 {
1389                     cont = (wxHtmlContainerCell*)c;
1390                     if ( IsEmptyContainer(cont) )
1391                     {
1392                         cont->SetIndent(0, wxHTML_INDENT_VERTICAL);
1393                     }
1394                     else
1395                     {
1396                         cont->RemoveExtraSpacing(false, true);
1397                         break;
1398                     }
1399                 }
1400             }
1401         }
1402     }
1403 }
1404
1405
1406
1407
1408 // --------------------------------------------------------------------------
1409 // wxHtmlColourCell
1410 // --------------------------------------------------------------------------
1411
1412 IMPLEMENT_ABSTRACT_CLASS(wxHtmlColourCell, wxHtmlCell)
1413
1414 void wxHtmlColourCell::Draw(wxDC& dc,
1415                             int x, int y,
1416                             int WXUNUSED(view_y1), int WXUNUSED(view_y2),
1417                             wxHtmlRenderingInfo& info)
1418 {
1419     DrawInvisible(dc, x, y, info);
1420 }
1421
1422 void wxHtmlColourCell::DrawInvisible(wxDC& dc,
1423                                      int WXUNUSED(x), int WXUNUSED(y),
1424                                      wxHtmlRenderingInfo& info)
1425 {
1426     wxHtmlRenderingState& state = info.GetState();
1427     if (m_Flags & wxHTML_CLR_FOREGROUND)
1428     {
1429         state.SetFgColour(m_Colour);
1430         if (state.GetSelectionState() != wxHTML_SEL_IN)
1431             dc.SetTextForeground(m_Colour);
1432         else
1433             dc.SetTextForeground(
1434                     info.GetStyle().GetSelectedTextColour(m_Colour));
1435     }
1436     if (m_Flags & wxHTML_CLR_BACKGROUND)
1437     {
1438         state.SetBgColour(m_Colour);
1439         if (state.GetSelectionState() != wxHTML_SEL_IN)
1440         {
1441             dc.SetTextBackground(m_Colour);
1442             dc.SetBackground(wxBrush(m_Colour, wxSOLID));
1443         }
1444         else
1445         {
1446             wxColour c = info.GetStyle().GetSelectedTextBgColour(m_Colour);
1447             dc.SetTextBackground(c);
1448             dc.SetBackground(wxBrush(c, wxSOLID));
1449         }
1450     }
1451 }
1452
1453
1454
1455
1456 // ---------------------------------------------------------------------------
1457 // wxHtmlFontCell
1458 // ---------------------------------------------------------------------------
1459
1460 IMPLEMENT_ABSTRACT_CLASS(wxHtmlFontCell, wxHtmlCell)
1461
1462 void wxHtmlFontCell::Draw(wxDC& dc,
1463                           int WXUNUSED(x), int WXUNUSED(y),
1464                           int WXUNUSED(view_y1), int WXUNUSED(view_y2),
1465                           wxHtmlRenderingInfo& WXUNUSED(info))
1466 {
1467     dc.SetFont(m_Font);
1468 }
1469
1470 void wxHtmlFontCell::DrawInvisible(wxDC& dc, int WXUNUSED(x), int WXUNUSED(y),
1471                                    wxHtmlRenderingInfo& WXUNUSED(info))
1472 {
1473     dc.SetFont(m_Font);
1474 }
1475
1476
1477
1478
1479
1480
1481
1482
1483 // ---------------------------------------------------------------------------
1484 // wxHtmlWidgetCell
1485 // ---------------------------------------------------------------------------
1486
1487 IMPLEMENT_ABSTRACT_CLASS(wxHtmlWidgetCell, wxHtmlCell)
1488
1489 wxHtmlWidgetCell::wxHtmlWidgetCell(wxWindow *wnd, int w)
1490 {
1491     int sx, sy;
1492     m_Wnd = wnd;
1493     m_Wnd->GetSize(&sx, &sy);
1494     m_Width = sx, m_Height = sy;
1495     m_WidthFloat = w;
1496 }
1497
1498
1499 void wxHtmlWidgetCell::Draw(wxDC& WXUNUSED(dc),
1500                             int WXUNUSED(x), int WXUNUSED(y),
1501                             int WXUNUSED(view_y1), int WXUNUSED(view_y2),
1502                             wxHtmlRenderingInfo& WXUNUSED(info))
1503 {
1504     int absx = 0, absy = 0, stx, sty;
1505     wxHtmlCell *c = this;
1506
1507     while (c)
1508     {
1509         absx += c->GetPosX();
1510         absy += c->GetPosY();
1511         c = c->GetParent();
1512     }
1513
1514     wxScrolledWindow *scrolwin =
1515         wxDynamicCast(m_Wnd->GetParent(), wxScrolledWindow);
1516     wxCHECK_RET( scrolwin,
1517                  _T("widget cells can only be placed in wxHtmlWindow") );
1518
1519     scrolwin->GetViewStart(&stx, &sty);
1520     m_Wnd->SetSize(absx - wxHTML_SCROLL_STEP * stx,
1521                    absy  - wxHTML_SCROLL_STEP * sty,
1522                    m_Width, m_Height);
1523 }
1524
1525
1526
1527 void wxHtmlWidgetCell::DrawInvisible(wxDC& WXUNUSED(dc),
1528                                      int WXUNUSED(x), int WXUNUSED(y),
1529                                      wxHtmlRenderingInfo& WXUNUSED(info))
1530 {
1531     int absx = 0, absy = 0, stx, sty;
1532     wxHtmlCell *c = this;
1533
1534     while (c)
1535     {
1536         absx += c->GetPosX();
1537         absy += c->GetPosY();
1538         c = c->GetParent();
1539     }
1540
1541     ((wxScrolledWindow*)(m_Wnd->GetParent()))->GetViewStart(&stx, &sty);
1542     m_Wnd->SetSize(absx - wxHTML_SCROLL_STEP * stx, absy  - wxHTML_SCROLL_STEP * sty, m_Width, m_Height);
1543 }
1544
1545
1546
1547 void wxHtmlWidgetCell::Layout(int w)
1548 {
1549     if (m_WidthFloat != 0)
1550     {
1551         m_Width = (w * m_WidthFloat) / 100;
1552         m_Wnd->SetSize(m_Width, m_Height);
1553     }
1554
1555     wxHtmlCell::Layout(w);
1556 }
1557
1558
1559
1560 // ----------------------------------------------------------------------------
1561 // wxHtmlTerminalCellsInterator
1562 // ----------------------------------------------------------------------------
1563
1564 const wxHtmlCell* wxHtmlTerminalCellsInterator::operator++()
1565 {
1566     if ( !m_pos )
1567         return NULL;
1568
1569     do
1570     {
1571         if ( m_pos == m_to )
1572         {
1573             m_pos = NULL;
1574             return NULL;
1575         }
1576
1577         if ( m_pos->GetNext() )
1578             m_pos = m_pos->GetNext();
1579         else
1580         {
1581             // we must go up the hierarchy until we reach container where this
1582             // is not the last child, and then go down to first terminal cell:
1583             while ( m_pos->GetNext() == NULL )
1584             {
1585                 m_pos = m_pos->GetParent();
1586                 if ( !m_pos )
1587                     return NULL;
1588             }
1589             m_pos = m_pos->GetNext();
1590         }
1591         while ( m_pos->GetFirstChild() != NULL )
1592             m_pos = m_pos->GetFirstChild();
1593     } while ( !m_pos->IsTerminalCell() );
1594
1595     return m_pos;
1596 }
1597
1598 #endif