src/html/htmlcell.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        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 #include "wx/defs.h"
  13
  14 #if wxUSE_HTML && wxUSE_STREAMS
  15
  16 #ifdef __BORLANDC__
  17 #pragma hdrstop
  18 #endif
  19
  20 #ifndef WXPRECOMP
  21     #include "wx/brush.h"
  22     #include "wx/colour.h"
  23     #include "wx/dc.h"
  24 #endif
  25
  26 #include "wx/html/htmlcell.h"
  27 #include "wx/html/htmlwin.h"
  28 #include "wx/settings.h"
  29 #include "wx/module.h"
  30 #include "wx/dynarray.h"
  31
  32 #include <stdlib.h>
  33
  34 //-----------------------------------------------------------------------------
  35 // Helper classes
  36 //-----------------------------------------------------------------------------
  37
  38 void wxHtmlSelection::Set(const wxPoint& fromPos, const wxHtmlCell *fromCell,
  39                           const wxPoint& toPos, const wxHtmlCell *toCell)
  40 {
  41     m_fromCell = fromCell;
  42     m_toCell = toCell;
  43     m_fromPos = fromPos;
  44     m_toPos = toPos;
  45 }
  46
  47 void wxHtmlSelection::Set(const wxHtmlCell *fromCell, const wxHtmlCell *toCell)
  48 {
  49     wxPoint p1 = fromCell ? fromCell->GetAbsPos() : wxDefaultPosition;
  50     wxPoint p2 = toCell ? toCell->GetAbsPos() : wxDefaultPosition;
  51     if ( toCell )
  52     {
  53         p2.x += toCell->GetWidth();
  54         p2.y += toCell->GetHeight();
  55     }
  56     Set(p1, fromCell, p2, toCell);
  57 }
  58
  59 wxColour
  60 wxDefaultHtmlRenderingStyle::
  61 GetSelectedTextColour(const wxColour& WXUNUSED(clr))
  62 {
  63     return wxSystemSettings::GetColour(wxSYS_COLOUR_HIGHLIGHTTEXT);
  64 }
  65
  66 wxColour
  67 wxDefaultHtmlRenderingStyle::
  68 GetSelectedTextBgColour(const wxColour& WXUNUSED(clr))
  69 {
  70     return wxSystemSettings::GetColour(wxSYS_COLOUR_HIGHLIGHT);
  71 }
  72
  73
  74 //-----------------------------------------------------------------------------
  75 // wxHtmlCell
  76 //-----------------------------------------------------------------------------
  77
  78 IMPLEMENT_ABSTRACT_CLASS(wxHtmlCell, wxObject)
  79
  80 wxHtmlCell::wxHtmlCell() : wxObject()
  81 {
  82     m_Next = NULL;
  83     m_Parent = NULL;
  84     m_Width = m_Height = m_Descent = 0;
  85     m_ScriptMode = wxHTML_SCRIPT_NORMAL;        // <sub> or <sup> mode
  86     m_ScriptBaseline = 0;                       // <sub> or <sup> baseline
  87     m_CanLiveOnPagebreak = true;
  88     m_Link = NULL;
  89 }
  90
  91 wxHtmlCell::~wxHtmlCell()
  92 {
  93     delete m_Link;
  94 }
  95
  96 // Update the descent value when whe are in a <sub> or <sup>.
  97 // prevbase is the parent base
  98 void wxHtmlCell::SetScriptMode(wxHtmlScriptMode mode, long previousBase)
  99 {
 100     m_ScriptMode = mode;
 101
 102     if (mode == wxHTML_SCRIPT_SUP)
 103         m_ScriptBaseline = previousBase - (m_Height + 1) / 2;
 104     else if (mode == wxHTML_SCRIPT_SUB)
 105         m_ScriptBaseline = previousBase + (m_Height + 1) / 6;
 106     else
 107         m_ScriptBaseline = 0;
 108
 109     m_Descent += m_ScriptBaseline;
 110 }
 111
 112 #if WXWIN_COMPATIBILITY_2_6
 113
 114 struct wxHtmlCellOnMouseClickCompatHelper;
 115
 116 static wxHtmlCellOnMouseClickCompatHelper *gs_helperOnMouseClick = NULL;
 117
 118 // helper for routing calls to new ProcessMouseClick() method to deprecated
 119 // OnMouseClick() method
 120 struct wxHtmlCellOnMouseClickCompatHelper
 121 {
 122     wxHtmlCellOnMouseClickCompatHelper(wxHtmlWindowInterface *window_,
 123                                        const wxPoint& pos_,
 124                                        const wxMouseEvent& event_)
 125         : window(window_), pos(pos_), event(event_), retval(false)
 126     {
 127     }
 128
 129     bool CallOnMouseClick(wxHtmlCell *cell)
 130     {
 131         wxHtmlCellOnMouseClickCompatHelper *oldHelper = gs_helperOnMouseClick;
 132         gs_helperOnMouseClick = this;
 133         cell->OnMouseClick
 134               (
 135                 window ? window->GetHTMLWindow() : NULL,
 136                 pos.x, pos.y,
 137                 event
 138               );
 139         gs_helperOnMouseClick = oldHelper;
 140         return retval;
 141     }
 142
 143     wxHtmlWindowInterface *window;
 144     const wxPoint& pos;
 145     const wxMouseEvent& event;
 146     bool retval;
 147 };
 148 #endif // WXWIN_COMPATIBILITY_2_6
 149
 150 bool wxHtmlCell::ProcessMouseClick(wxHtmlWindowInterface *window,
 151                                    const wxPoint& pos,
 152                                    const wxMouseEvent& event)
 153 {
 154     wxCHECK_MSG( window, false, _T("window interface must be provided") );
 155
 156 #if WXWIN_COMPATIBILITY_2_6
 157     // NB: this hack puts the body of ProcessMouseClick() into OnMouseClick()
 158     //     (for which it has to pass the arguments and return value via a
 159     //     helper variable because these two methods have different
 160     //     signatures), so that old code overriding OnMouseClick will continue
 161     //     to work
 162     wxHtmlCellOnMouseClickCompatHelper compat(window, pos, event);
 163     return compat.CallOnMouseClick(this);
 164 }
 165
 166 void wxHtmlCell::OnMouseClick(wxWindow *, int, int, const wxMouseEvent& event)
 167 {
 168     wxCHECK_RET( gs_helperOnMouseClick, _T("unexpected call to OnMouseClick") );
 169     wxHtmlWindowInterface *window = gs_helperOnMouseClick->window;
 170     const wxPoint& pos = gs_helperOnMouseClick->pos;
 171 #endif // WXWIN_COMPATIBILITY_2_6
 172
 173     wxHtmlLinkInfo *lnk = GetLink(pos.x, pos.y);
 174     bool retval = false;
 175
 176     if (lnk)
 177     {
 178         wxHtmlLinkInfo lnk2(*lnk);
 179         lnk2.SetEvent(&event);
 180         lnk2.SetHtmlCell(this);
 181
 182         window->OnHTMLLinkClicked(lnk2);
 183         retval = true;
 184     }
 185
 186 #if WXWIN_COMPATIBILITY_2_6
 187     gs_helperOnMouseClick->retval = retval;
 188 #else
 189     return retval;
 190 #endif // WXWIN_COMPATIBILITY_2_6
 191 }
 192
 193 #if WXWIN_COMPATIBILITY_2_6
 194 wxCursor wxHtmlCell::GetCursor() const
 195 {
 196     return wxNullCursor;
 197 }
 198 #endif // WXWIN_COMPATIBILITY_2_6
 199
 200 wxCursor wxHtmlCell::GetMouseCursor(wxHtmlWindowInterface *window) const
 201 {
 202 #if WXWIN_COMPATIBILITY_2_6
 203     // NB: Older versions of wx used GetCursor() virtual method in place of
 204     //     GetMouseCursor(interface). This code ensures that user code that
 205     //     overriden GetCursor() continues to work. The trick is that the base
 206     //     wxHtmlCell::GetCursor() method simply returns wxNullCursor, so we
 207     //     know that GetCursor() was overriden iff it returns valid cursor.
 208     wxCursor cur = GetCursor();
 209     if (cur.Ok())
 210         return cur;
 211 #endif // WXWIN_COMPATIBILITY_2_6
 212
 213     if ( GetLink() )
 214     {
 215         return window->GetHTMLCursor(wxHtmlWindowInterface::HTMLCursor_Link);
 216     }
 217     else
 218     {
 219         return window->GetHTMLCursor(wxHtmlWindowInterface::HTMLCursor_Default);
 220     }
 221 }
 222
 223
 224 bool wxHtmlCell::AdjustPagebreak(int *pagebreak, int* WXUNUSED(known_pagebreaks), int WXUNUSED(number_of_pages)) const
 225 {
 226     if ((!m_CanLiveOnPagebreak) &&
 227                 m_PosY < *pagebreak && m_PosY + m_Height > *pagebreak)
 228     {
 229         *pagebreak = m_PosY;
 230         return true;
 231     }
 232
 233     return false;
 234 }
 235
 236
 237
 238 void wxHtmlCell::SetLink(const wxHtmlLinkInfo& link)
 239 {
 240     if (m_Link) delete m_Link;
 241     m_Link = NULL;
 242     if (link.GetHref() != wxEmptyString)
 243         m_Link = new wxHtmlLinkInfo(link);
 244 }
 245
 246
 247 void wxHtmlCell::Layout(int WXUNUSED(w))
 248 {
 249     SetPos(0, 0);
 250 }
 251
 252
 253
 254 const wxHtmlCell* wxHtmlCell::Find(int WXUNUSED(condition), const void* WXUNUSED(param)) const
 255 {
 256     return NULL;
 257 }
 258
 259
 260 wxHtmlCell *wxHtmlCell::FindCellByPos(wxCoord x, wxCoord y,
 261                                       unsigned flags) const
 262 {
 263     if ( x >= 0 && x < m_Width && y >= 0 && y < m_Height )
 264     {
 265         return wxConstCast(this, wxHtmlCell);
 266     }
 267     else
 268     {
 269         if ((flags & wxHTML_FIND_NEAREST_AFTER) &&
 270                 (y < 0 || (y < 0+m_Height && x < 0+m_Width)))
 271             return wxConstCast(this, wxHtmlCell);
 272         else if ((flags & wxHTML_FIND_NEAREST_BEFORE) &&
 273                 (y >= 0+m_Height || (y >= 0 && x >= 0)))
 274             return wxConstCast(this, wxHtmlCell);
 275         else
 276             return NULL;
 277     }
 278 }
 279
 280
 281 wxPoint wxHtmlCell::GetAbsPos(wxHtmlCell *rootCell) const
 282 {
 283     wxPoint p(m_PosX, m_PosY);
 284     for (wxHtmlCell *parent = m_Parent; parent && parent != rootCell;
 285          parent = parent->m_Parent)
 286     {
 287         p.x += parent->m_PosX;
 288         p.y += parent->m_PosY;
 289     }
 290     return p;
 291 }
 292
 293 wxHtmlCell *wxHtmlCell::GetRootCell() const
 294 {
 295     wxHtmlCell *c = wxConstCast(this, wxHtmlCell);
 296     while ( c->m_Parent )
 297         c = c->m_Parent;
 298     return c;
 299 }
 300
 301 unsigned wxHtmlCell::GetDepth() const
 302 {
 303     unsigned d = 0;
 304     for (wxHtmlCell *p = m_Parent; p; p = p->m_Parent)
 305         d++;
 306     return d;
 307 }
 308
 309 bool wxHtmlCell::IsBefore(wxHtmlCell *cell) const
 310 {
 311     const wxHtmlCell *c1 = this;
 312     const wxHtmlCell *c2 = cell;
 313     unsigned d1 = GetDepth();
 314     unsigned d2 = cell->GetDepth();
 315
 316     if ( d1 > d2 )
 317         for (; d1 != d2; d1-- )
 318             c1 = c1->m_Parent;
 319     else if ( d1 < d2 )
 320         for (; d1 != d2; d2-- )
 321             c2 = c2->m_Parent;
 322
 323     if ( cell == this )
 324         return true;
 325
 326     while ( c1 && c2 )
 327     {
 328         if ( c1->m_Parent == c2->m_Parent )
 329         {
 330             while ( c1 )
 331             {
 332                 if ( c1 == c2 )
 333                     return true;
 334                 c1 = c1->GetNext();
 335             }
 336             return false;
 337         }
 338         else
 339         {
 340             c1 = c1->m_Parent;
 341             c2 = c2->m_Parent;
 342         }
 343     }
 344
 345     wxFAIL_MSG(_T("Cells are in different trees"));
 346     return false;
 347 }
 348
 349
 350 //-----------------------------------------------------------------------------
 351 // wxHtmlWordCell
 352 //-----------------------------------------------------------------------------
 353
 354 IMPLEMENT_ABSTRACT_CLASS(wxHtmlWordCell, wxHtmlCell)
 355
 356 wxHtmlWordCell::wxHtmlWordCell(const wxString& word, const wxDC& dc) : wxHtmlCell()
 357 {
 358     m_Word = word;
 359     dc.GetTextExtent(m_Word, &m_Width, &m_Height, &m_Descent);
 360     SetCanLiveOnPagebreak(false);
 361     m_allowLinebreak = true;
 362 }
 363
 364 void wxHtmlWordCell::SetPreviousWord(wxHtmlWordCell *cell)
 365 {
 366     if ( cell && m_Parent == cell->m_Parent &&
 367          !wxIsspace(cell->m_Word.Last()) && !wxIsspace(m_Word[0u]) )
 368     {
 369         m_allowLinebreak = false;
 370     }
 371 }
 372
 373 // Splits m_Word into up to three parts according to selection, returns
 374 // substring before, in and after selection and the points (in relative coords)
 375 // where s2 and s3 start:
 376 void wxHtmlWordCell::Split(const wxDC& dc,
 377                            const wxPoint& selFrom, const wxPoint& selTo,
 378                            unsigned& pos1, unsigned& pos2) const
 379 {
 380     wxPoint pt1 = (selFrom == wxDefaultPosition) ?
 381                    wxDefaultPosition : selFrom - GetAbsPos();
 382     wxPoint pt2 = (selTo == wxDefaultPosition) ?
 383                    wxPoint(m_Width, wxDefaultCoord) : selTo - GetAbsPos();
 384
 385     unsigned len = m_Word.length();
 386     unsigned i = 0;
 387     pos1 = 0;
 388
 389     // adjust for cases when the start/end position is completely
 390     // outside the cell:
 391     if ( pt1.y < 0 )
 392         pt1.x = 0;
 393     if ( pt2.y >= m_Height )
 394         pt2.x = m_Width;
 395
 396     // before selection:
 397 #ifdef __WXMAC__
 398     // implementation using PartialExtents to support fractional widths
 399     wxArrayInt widths ;
 400     dc.GetPartialTextExtents(m_Word,widths) ;
 401     while( i < len && pt1.x >= widths[i] )
 402         i++ ;
 403 #else // __WXMAC__
 404     wxCoord charW, charH;
 405     while ( pt1.x > 0 && i < len )
 406     {
 407         dc.GetTextExtent(m_Word[i], &charW, &charH);
 408         pt1.x -= charW;
 409         if ( pt1.x >= 0 )
 410         {
 411             pos1 += charW;
 412             i++;
 413         }
 414     }
 415 #endif // __WXMAC__/!__WXMAC__
 416
 417     // in selection:
 418     unsigned j = i;
 419 #ifdef __WXMAC__
 420     while( j < len && pt2.x >= widths[j] )
 421         j++ ;
 422 #else // __WXMAC__
 423     pos2 = pos1;
 424     pt2.x -= pos2;
 425     while ( pt2.x > 0 && j < len )
 426     {
 427         dc.GetTextExtent(m_Word[j], &charW, &charH);
 428         pt2.x -= charW;
 429         if ( pt2.x >= 0 )
 430         {
 431             pos2 += charW;
 432             j++;
 433         }
 434     }
 435 #endif // __WXMAC__/!__WXMAC__
 436
 437     pos1 = i;
 438     pos2 = j;
 439 }
 440
 441 void wxHtmlWordCell::SetSelectionPrivPos(const wxDC& dc, wxHtmlSelection *s) const
 442 {
 443     unsigned p1, p2;
 444
 445     Split(dc,
 446           this == s->GetFromCell() ? s->GetFromPos() : wxDefaultPosition,
 447           this == s->GetToCell() ? s->GetToPos() : wxDefaultPosition,
 448           p1, p2);
 449
 450     wxPoint p(0, m_Word.length());
 451
 452     if ( this == s->GetFromCell() )
 453         p.x = p1; // selection starts here
 454     if ( this == s->GetToCell() )
 455         p.y = p2; // selection ends here
 456
 457     if ( this == s->GetFromCell() )
 458         s->SetFromPrivPos(p);
 459     if ( this == s->GetToCell() )
 460         s->SetToPrivPos(p);
 461 }
 462
 463
 464 static void SwitchSelState(wxDC& dc, wxHtmlRenderingInfo& info,
 465                            bool toSelection)
 466 {
 467     wxColour fg = info.GetState().GetFgColour();
 468     wxColour bg = info.GetState().GetBgColour();
 469
 470     if ( toSelection )
 471     {
 472         dc.SetBackgroundMode(wxSOLID);
 473         dc.SetTextForeground(info.GetStyle().GetSelectedTextColour(fg));
 474         dc.SetTextBackground(info.GetStyle().GetSelectedTextBgColour(bg));
 475         dc.SetBackground(wxBrush(info.GetStyle().GetSelectedTextBgColour(bg),
 476                                  wxSOLID));
 477     }
 478     else
 479     {
 480         dc.SetBackgroundMode(wxTRANSPARENT);
 481         dc.SetTextForeground(fg);
 482         dc.SetTextBackground(bg);
 483         dc.SetBackground(wxBrush(bg, wxSOLID));
 484     }
 485 }
 486
 487
 488 void wxHtmlWordCell::Draw(wxDC& dc, int x, int y,
 489                           int WXUNUSED(view_y1), int WXUNUSED(view_y2),
 490                           wxHtmlRenderingInfo& info)
 491 {
 492 #if 0 // useful for debugging
 493     dc.SetPen(*wxBLACK_PEN);
 494     dc.DrawRectangle(x+m_PosX,y+m_PosY,m_Width /* VZ: +1? */ ,m_Height);
 495 #endif
 496
 497     bool drawSelectionAfterCell = false;
 498
 499     if ( info.GetState().GetSelectionState() == wxHTML_SEL_CHANGING )
 500     {
 501         // Selection changing, we must draw the word piecewise:
 502         wxHtmlSelection *s = info.GetSelection();
 503         wxString txt;
 504         int w, h;
 505         int ofs = 0;
 506
 507         wxPoint priv = (this == s->GetFromCell()) ?
 508                            s->GetFromPrivPos() : s->GetToPrivPos();
 509
 510         // NB: this is quite a hack: in order to compute selection boundaries
 511         //     (in word's characters) we must know current font, which is only
 512         //     possible inside rendering code. Therefore we update the
 513         //     information here and store it in wxHtmlSelection so that
 514         //     ConvertToText can use it later:
 515         if ( priv == wxDefaultPosition )
 516         {
 517             SetSelectionPrivPos(dc, s);
 518             priv = (this == s->GetFromCell()) ?
 519                     s->GetFromPrivPos() : s->GetToPrivPos();
 520         }
 521
 522         int part1 = priv.x;
 523         int part2 = priv.y;
 524
 525         if ( part1 > 0 )
 526         {
 527             txt = m_Word.Mid(0, part1);
 528             dc.DrawText(txt, x + m_PosX, y + m_PosY);
 529             dc.GetTextExtent(txt, &w, &h);
 530             ofs += w;
 531         }
 532
 533         SwitchSelState(dc, info, true);
 534
 535         txt = m_Word.Mid(part1, part2-part1);
 536         dc.DrawText(txt, ofs + x + m_PosX, y + m_PosY);
 537
 538         if ( (size_t)part2 < m_Word.length() )
 539         {
 540             dc.GetTextExtent(txt, &w, &h);
 541             ofs += w;
 542             SwitchSelState(dc, info, false);
 543             txt = m_Word.Mid(part2);
 544             dc.DrawText(txt, ofs + x + m_PosX, y + m_PosY);
 545         }
 546         else
 547             drawSelectionAfterCell = true;
 548     }
 549     else
 550     {
 551         wxHtmlSelectionState selstate = info.GetState().GetSelectionState();
 552         // Not changing selection state, draw the word in single mode:
 553         if ( selstate != wxHTML_SEL_OUT &&
 554              dc.GetBackgroundMode() != wxSOLID )
 555         {
 556             SwitchSelState(dc, info, true);
 557         }
 558         else if ( selstate == wxHTML_SEL_OUT &&
 559                   dc.GetBackgroundMode() == wxSOLID )
 560         {
 561             SwitchSelState(dc, info, false);
 562         }
 563         dc.DrawText(m_Word, x + m_PosX, y + m_PosY);
 564         drawSelectionAfterCell = (selstate != wxHTML_SEL_OUT);
 565     }
 566
 567     // NB: If the text is justified then there is usually some free space
 568     //     between adjacent cells and drawing the selection only onto cells
 569     //     would result in ugly unselected spaces. The code below detects
 570     //     this special case and renders the selection *outside* the sell,
 571     //     too.
 572     if ( m_Parent->GetAlignHor() == wxHTML_ALIGN_JUSTIFY &&
 573          drawSelectionAfterCell )
 574     {
 575         wxHtmlCell *nextCell = m_Next;
 576         while ( nextCell && nextCell->IsFormattingCell() )
 577             nextCell = nextCell->GetNext();
 578         if ( nextCell )
 579         {
 580             int nextX = nextCell->GetPosX();
 581             if ( m_PosX + m_Width < nextX )
 582             {
 583                 dc.SetBrush(dc.GetBackground());
 584                 dc.SetPen(*wxTRANSPARENT_PEN);
 585                 dc.DrawRectangle(x + m_PosX + m_Width, y + m_PosY,
 586                                  nextX - m_PosX - m_Width, m_Height);
 587             }
 588         }
 589     }
 590 }
 591
 592
 593 wxString wxHtmlWordCell::ConvertToText(wxHtmlSelection *s) const
 594 {
 595     if ( s && (this == s->GetFromCell() || this == s->GetToCell()) )
 596     {
 597         wxPoint priv = this == s->GetFromCell() ? s->GetFromPrivPos()
 598                                                 : s->GetToPrivPos();
 599
 600         // VZ: we may be called before we had a chance to re-render ourselves
 601         //     and in this case GetFrom/ToPrivPos() is not set yet -- assume
 602         //     that this only happens in case of a double/triple click (which
 603         //     seems to be the case now) and so it makes sense to select the
 604         //     entire contents of the cell in this case
 605         //
 606         // TODO: but this really needs to be fixed in some better way later...
 607         if ( priv != wxDefaultPosition )
 608         {
 609             int part1 = priv.x;
 610             int part2 = priv.y;
 611             return m_Word.Mid(part1, part2-part1);
 612         }
 613         //else: return the whole word below
 614     }
 615
 616     return m_Word;
 617 }
 618
 619 wxCursor wxHtmlWordCell::GetMouseCursor(wxHtmlWindowInterface *window) const
 620 {
 621     if ( !GetLink() )
 622     {
 623         return window->GetHTMLCursor(wxHtmlWindowInterface::HTMLCursor_Text);
 624     }
 625     else
 626     {
 627         return wxHtmlCell::GetMouseCursor(window);
 628     }
 629 }
 630
 631
 632 //-----------------------------------------------------------------------------
 633 // wxHtmlContainerCell
 634 //-----------------------------------------------------------------------------
 635
 636 IMPLEMENT_ABSTRACT_CLASS(wxHtmlContainerCell, wxHtmlCell)
 637
 638 wxHtmlContainerCell::wxHtmlContainerCell(wxHtmlContainerCell *parent) : wxHtmlCell()
 639 {
 640     m_Cells = m_LastCell = NULL;
 641     m_Parent = parent;
 642     m_MaxTotalWidth = 0;
 643     if (m_Parent) m_Parent->InsertCell(this);
 644     m_AlignHor = wxHTML_ALIGN_LEFT;
 645     m_AlignVer = wxHTML_ALIGN_BOTTOM;
 646     m_IndentLeft = m_IndentRight = m_IndentTop = m_IndentBottom = 0;
 647     m_WidthFloat = 100; m_WidthFloatUnits = wxHTML_UNITS_PERCENT;
 648     m_UseBkColour = false;
 649     m_UseBorder = false;
 650     m_MinHeight = 0;
 651     m_MinHeightAlign = wxHTML_ALIGN_TOP;
 652     m_LastLayout = -1;
 653 }
 654
 655 wxHtmlContainerCell::~wxHtmlContainerCell()
 656 {
 657     wxHtmlCell *cell = m_Cells;
 658     while ( cell )
 659     {
 660         wxHtmlCell *cellNext = cell->GetNext();
 661         delete cell;
 662         cell = cellNext;
 663     }
 664 }
 665
 666
 667
 668 void wxHtmlContainerCell::SetIndent(int i, int what, int units)
 669 {
 670     int val = (units == wxHTML_UNITS_PIXELS) ? i : -i;
 671     if (what & wxHTML_INDENT_LEFT) m_IndentLeft = val;
 672     if (what & wxHTML_INDENT_RIGHT) m_IndentRight = val;
 673     if (what & wxHTML_INDENT_TOP) m_IndentTop = val;
 674     if (what & wxHTML_INDENT_BOTTOM) m_IndentBottom = val;
 675     m_LastLayout = -1;
 676 }
 677
 678
 679
 680 int wxHtmlContainerCell::GetIndent(int ind) const
 681 {
 682     if (ind & wxHTML_INDENT_LEFT) return m_IndentLeft;
 683     else if (ind & wxHTML_INDENT_RIGHT) return m_IndentRight;
 684     else if (ind & wxHTML_INDENT_TOP) return m_IndentTop;
 685     else if (ind & wxHTML_INDENT_BOTTOM) return m_IndentBottom;
 686     else return -1; /* BUG! Should not be called... */
 687 }
 688
 689
 690
 691
 692 int wxHtmlContainerCell::GetIndentUnits(int ind) const
 693 {
 694     bool p = false;
 695     if (ind & wxHTML_INDENT_LEFT) p = m_IndentLeft < 0;
 696     else if (ind & wxHTML_INDENT_RIGHT) p = m_IndentRight < 0;
 697     else if (ind & wxHTML_INDENT_TOP) p = m_IndentTop < 0;
 698     else if (ind & wxHTML_INDENT_BOTTOM) p = m_IndentBottom < 0;
 699     if (p) return wxHTML_UNITS_PERCENT;
 700     else return wxHTML_UNITS_PIXELS;
 701 }
 702
 703
 704
 705 bool wxHtmlContainerCell::AdjustPagebreak(int *pagebreak, int* known_pagebreaks, int number_of_pages) const
 706 {
 707     if (!m_CanLiveOnPagebreak)
 708         return wxHtmlCell::AdjustPagebreak(pagebreak, known_pagebreaks, number_of_pages);
 709
 710     else
 711     {
 712         wxHtmlCell *c = GetFirstChild();
 713         bool rt = false;
 714         int pbrk = *pagebreak - m_PosY;
 715
 716         while (c)
 717         {
 718             if (c->AdjustPagebreak(&pbrk, known_pagebreaks, number_of_pages))
 719                 rt = true;
 720             c = c->GetNext();
 721         }
 722         if (rt)
 723             *pagebreak = pbrk + m_PosY;
 724         return rt;
 725     }
 726 }
 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 = 0;
 893
 894                     const wxHtmlCell *c;
 895                     if ( line != cell )
 896                     {
 897                         for ( c = line->GetNext(); 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 cell on line is not moved:
 910                         line->SetPos(line->GetPosX() + s_indent,
 911                                      line->GetPosY() + ypos);
 912
 913                         line = line->GetNext();
 914                         for ( int n = 0; line != cell; line = line->GetNext() )
 915                         {
 916                             if ( line->IsLinebreakAllowed() )
 917                             {
 918                                 // offset the next cell relative to this one
 919                                 // thus increasing our size
 920                                 n++;
 921                             }
 922
 923                             line->SetPos(line->GetPosX() + s_indent +
 924                                            ((n * step) / total),
 925                                            line->GetPosY() + ypos);
 926                         }
 927                     }
 928                     else
 929                     {
 930                         // this will cause the code to enter "else branch" below:
 931                         step = 0;
 932                     }
 933                 }
 934                 // else branch:
 935                 if ( step <= 0 ) // no extra space to distribute
 936                 {
 937                     // just set the indent properly
 938                     while (line != cell)
 939                     {
 940                         line->SetPos(line->GetPosX() + s_indent,
 941                                      line->GetPosY() + ypos);
 942                         line = line->GetNext();
 943                     }
 944                 }
 945             }
 946
 947             ypos += ysizedown;
 948             xpos = 0;
 949             ysizeup = ysizedown = 0;
 950             line = cell;
 951         }
 952     }
 953
 954     // setup height & width, depending on container layout:
 955     m_Height = ypos + (ysizedown + ysizeup) + m_IndentBottom;
 956
 957     if (m_Height < m_MinHeight)
 958     {
 959         if (m_MinHeightAlign != wxHTML_ALIGN_TOP)
 960         {
 961             int diff = m_MinHeight - m_Height;
 962             if (m_MinHeightAlign == wxHTML_ALIGN_CENTER) diff /= 2;
 963             cell = m_Cells;
 964             while (cell)
 965             {
 966                 cell->SetPos(cell->GetPosX(), cell->GetPosY() + diff);
 967                 cell = cell->GetNext();
 968             }
 969         }
 970         m_Height = m_MinHeight;
 971     }
 972
 973     if (curLineWidth > m_MaxTotalWidth)
 974         m_MaxTotalWidth = curLineWidth;
 975
 976     m_MaxTotalWidth += s_indent + ((m_IndentRight < 0) ? (-m_IndentRight * m_Width / 100) : m_IndentRight);
 977     MaxLineWidth += s_indent + ((m_IndentRight < 0) ? (-m_IndentRight * m_Width / 100) : m_IndentRight);
 978     if (m_Width < MaxLineWidth) m_Width = MaxLineWidth;
 979
 980     m_LastLayout = w;
 981 }
 982
 983 void wxHtmlContainerCell::UpdateRenderingStatePre(wxHtmlRenderingInfo& info,
 984                                                   wxHtmlCell *cell) const
 985 {
 986     wxHtmlSelection *s = info.GetSelection();
 987     if (!s) return;
 988     if (s->GetFromCell() == cell || s->GetToCell() == cell)
 989     {
 990         info.GetState().SetSelectionState(wxHTML_SEL_CHANGING);
 991     }
 992 }
 993
 994 void wxHtmlContainerCell::UpdateRenderingStatePost(wxHtmlRenderingInfo& info,
 995                                                    wxHtmlCell *cell) const
 996 {
 997     wxHtmlSelection *s = info.GetSelection();
 998     if (!s) return;
 999     if (s->GetToCell() == cell)
1000         info.GetState().SetSelectionState(wxHTML_SEL_OUT);
1001     else if (s->GetFromCell() == cell)
1002         info.GetState().SetSelectionState(wxHTML_SEL_IN);
1003 }
1004
1005 #define mMin(a, b) (((a) < (b)) ? (a) : (b))
1006 #define mMax(a, b) (((a) < (b)) ? (b) : (a))
1007
1008 void wxHtmlContainerCell::Draw(wxDC& dc, int x, int y, int view_y1, int view_y2,
1009                                wxHtmlRenderingInfo& info)
1010 {
1011 #if 0 // useful for debugging
1012     dc.SetPen(*wxRED_PEN);
1013     dc.DrawRectangle(x+m_PosX,y+m_PosY,m_Width,m_Height);
1014 #endif
1015
1016     int xlocal = x + m_PosX;
1017     int ylocal = y + m_PosY;
1018
1019     if (m_UseBkColour)
1020     {
1021         wxBrush myb = wxBrush(m_BkColour, wxSOLID);
1022
1023         int real_y1 = mMax(ylocal, view_y1);
1024         int real_y2 = mMin(ylocal + m_Height - 1, view_y2);
1025
1026         dc.SetBrush(myb);
1027         dc.SetPen(*wxTRANSPARENT_PEN);
1028         dc.DrawRectangle(xlocal, real_y1, m_Width, real_y2 - real_y1 + 1);
1029     }
1030
1031     if (m_UseBorder)
1032     {
1033         wxPen mypen1(m_BorderColour1, 1, wxSOLID);
1034         wxPen mypen2(m_BorderColour2, 1, wxSOLID);
1035
1036         dc.SetPen(mypen1);
1037         dc.DrawLine(xlocal, ylocal, xlocal, ylocal + m_Height - 1);
1038         dc.DrawLine(xlocal, ylocal, xlocal + m_Width, ylocal);
1039         dc.SetPen(mypen2);
1040         dc.DrawLine(xlocal + m_Width - 1, ylocal, xlocal +  m_Width - 1, ylocal + m_Height - 1);
1041         dc.DrawLine(xlocal, ylocal + m_Height - 1, xlocal + m_Width, ylocal + m_Height - 1);
1042     }
1043
1044     if (m_Cells)
1045     {
1046         // draw container's contents:
1047         for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
1048         {
1049
1050             // optimize drawing: don't render off-screen content:
1051             if ((ylocal + cell->GetPosY() <= view_y2) &&
1052                 (ylocal + cell->GetPosY() + cell->GetHeight() > view_y1))
1053             {
1054                 // the cell is visible, draw it:
1055                 UpdateRenderingStatePre(info, cell);
1056                 cell->Draw(dc,
1057                            xlocal, ylocal, view_y1, view_y2,
1058                            info);
1059                 UpdateRenderingStatePost(info, cell);
1060             }
1061             else
1062             {
1063                 // the cell is off-screen, proceed with font+color+etc.
1064                 // changes only:
1065                 cell->DrawInvisible(dc, xlocal, ylocal, info);
1066             }
1067         }
1068     }
1069 }
1070
1071
1072
1073 void wxHtmlContainerCell::DrawInvisible(wxDC& dc, int x, int y,
1074                                         wxHtmlRenderingInfo& info)
1075 {
1076     if (m_Cells)
1077     {
1078         for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
1079         {
1080             UpdateRenderingStatePre(info, cell);
1081             cell->DrawInvisible(dc, x + m_PosX, y + m_PosY, info);
1082             UpdateRenderingStatePost(info, cell);
1083         }
1084     }
1085 }
1086
1087
1088 wxColour wxHtmlContainerCell::GetBackgroundColour()
1089 {
1090     if (m_UseBkColour)
1091         return m_BkColour;
1092     else
1093         return wxNullColour;
1094 }
1095
1096
1097
1098 wxHtmlLinkInfo *wxHtmlContainerCell::GetLink(int x, int y) const
1099 {
1100     wxHtmlCell *cell = FindCellByPos(x, y);
1101
1102     // VZ: I don't know if we should pass absolute or relative coords to
1103     //     wxHtmlCell::GetLink()? As the base class version just ignores them
1104     //     anyhow, it hardly matters right now but should still be clarified
1105     return cell ? cell->GetLink(x, y) : NULL;
1106 }
1107
1108
1109
1110 void wxHtmlContainerCell::InsertCell(wxHtmlCell *f)
1111 {
1112     if (!m_Cells) m_Cells = m_LastCell = f;
1113     else
1114     {
1115         m_LastCell->SetNext(f);
1116         m_LastCell = f;
1117         if (m_LastCell) while (m_LastCell->GetNext()) m_LastCell = m_LastCell->GetNext();
1118     }
1119     f->SetParent(this);
1120     m_LastLayout = -1;
1121 }
1122
1123
1124
1125 void wxHtmlContainerCell::SetAlign(const wxHtmlTag& tag)
1126 {
1127     if (tag.HasParam(wxT("ALIGN")))
1128     {
1129         wxString alg = tag.GetParam(wxT("ALIGN"));
1130         alg.MakeUpper();
1131         if (alg == wxT("CENTER"))
1132             SetAlignHor(wxHTML_ALIGN_CENTER);
1133         else if (alg == wxT("LEFT"))
1134             SetAlignHor(wxHTML_ALIGN_LEFT);
1135         else if (alg == wxT("JUSTIFY"))
1136             SetAlignHor(wxHTML_ALIGN_JUSTIFY);
1137         else if (alg == wxT("RIGHT"))
1138             SetAlignHor(wxHTML_ALIGN_RIGHT);
1139         m_LastLayout = -1;
1140     }
1141 }
1142
1143
1144
1145 void wxHtmlContainerCell::SetWidthFloat(const wxHtmlTag& tag, double pixel_scale)
1146 {
1147     if (tag.HasParam(wxT("WIDTH")))
1148     {
1149         int wdi;
1150         wxString wd = tag.GetParam(wxT("WIDTH"));
1151
1152         if (wd[wd.Length()-1] == wxT('%'))
1153         {
1154             wxSscanf(wd.c_str(), wxT("%i%%"), &wdi);
1155             SetWidthFloat(wdi, wxHTML_UNITS_PERCENT);
1156         }
1157         else
1158         {
1159             wxSscanf(wd.c_str(), wxT("%i"), &wdi);
1160             SetWidthFloat((int)(pixel_scale * (double)wdi), wxHTML_UNITS_PIXELS);
1161         }
1162         m_LastLayout = -1;
1163     }
1164 }
1165
1166
1167
1168 const wxHtmlCell* wxHtmlContainerCell::Find(int condition, const void* param) const
1169 {
1170     if (m_Cells)
1171     {
1172         for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
1173         {
1174             const wxHtmlCell *r = cell->Find(condition, param);
1175             if (r) return r;
1176         }
1177     }
1178     return NULL;
1179 }
1180
1181
1182 wxHtmlCell *wxHtmlContainerCell::FindCellByPos(wxCoord x, wxCoord y,
1183                                                unsigned flags) const
1184 {
1185     if ( flags & wxHTML_FIND_EXACT )
1186     {
1187         for ( const wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext() )
1188         {
1189             int cx = cell->GetPosX(),
1190                 cy = cell->GetPosY();
1191
1192             if ( (cx <= x) && (cx + cell->GetWidth() > x) &&
1193                  (cy <= y) && (cy + cell->GetHeight() > y) )
1194             {
1195                 return cell->FindCellByPos(x - cx, y - cy, flags);
1196             }
1197         }
1198     }
1199     else if ( flags & wxHTML_FIND_NEAREST_AFTER )
1200     {
1201         wxHtmlCell *c;
1202         for ( const wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext() )
1203         {
1204             if ( cell->IsFormattingCell() )
1205                 continue;
1206             int cellY = cell->GetPosY();
1207             if (!( y < cellY || (y < cellY + cell->GetHeight() &&
1208                                  x < cell->GetPosX() + cell->GetWidth()) ))
1209                 continue;
1210
1211             c = cell->FindCellByPos(x - cell->GetPosX(), y - cellY, flags);
1212             if (c) return c;
1213         }
1214     }
1215     else if ( flags & wxHTML_FIND_NEAREST_BEFORE )
1216     {
1217         wxHtmlCell *c2, *c = NULL;
1218         for ( const wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext() )
1219         {
1220             if ( cell->IsFormattingCell() )
1221                 continue;
1222             int cellY = cell->GetPosY();
1223             if (!( cellY + cell->GetHeight() <= y ||
1224                    (y >= cellY && x >= cell->GetPosX()) ))
1225                 break;
1226             c2 = cell->FindCellByPos(x - cell->GetPosX(), y - cellY, flags);
1227             if (c2)
1228                 c = c2;
1229         }
1230         if (c) return c;
1231     }
1232
1233     return NULL;
1234 }
1235
1236
1237 bool wxHtmlContainerCell::ProcessMouseClick(wxHtmlWindowInterface *window,
1238                                             const wxPoint& pos,
1239                                             const wxMouseEvent& event)
1240 {
1241 #if WXWIN_COMPATIBILITY_2_6
1242     wxHtmlCellOnMouseClickCompatHelper compat(window, pos, event);
1243     return compat.CallOnMouseClick(this);
1244 }
1245
1246 void wxHtmlContainerCell::OnMouseClick(wxWindow*,
1247                                        int, int, const wxMouseEvent& event)
1248 {
1249     wxCHECK_RET( gs_helperOnMouseClick, _T("unexpected call to OnMouseClick") );
1250     wxHtmlWindowInterface *window = gs_helperOnMouseClick->window;
1251     const wxPoint& pos = gs_helperOnMouseClick->pos;
1252 #endif // WXWIN_COMPATIBILITY_2_6
1253
1254     bool retval = false;
1255     wxHtmlCell *cell = FindCellByPos(pos.x, pos.y);
1256     if ( cell )
1257         retval = cell->ProcessMouseClick(window, pos, event);
1258
1259 #if WXWIN_COMPATIBILITY_2_6
1260     gs_helperOnMouseClick->retval = retval;
1261 #else
1262     return retval;
1263 #endif // WXWIN_COMPATIBILITY_2_6
1264 }
1265
1266
1267 wxHtmlCell *wxHtmlContainerCell::GetFirstTerminal() const
1268 {
1269     if ( m_Cells )
1270     {
1271         wxHtmlCell *c2;
1272         for (wxHtmlCell *c = m_Cells; c; c = c->GetNext())
1273         {
1274             c2 = c->GetFirstTerminal();
1275             if ( c2 )
1276                 return c2;
1277         }
1278     }
1279     return NULL;
1280 }
1281
1282 wxHtmlCell *wxHtmlContainerCell::GetLastTerminal() const
1283 {
1284     if ( m_Cells )
1285     {
1286         // most common case first:
1287         wxHtmlCell *c = m_LastCell->GetLastTerminal();
1288         if ( c )
1289             return c;
1290
1291         wxHtmlCell *ctmp;
1292         wxHtmlCell *c2 = NULL;
1293         for (c = m_Cells; c; c = c->GetNext())
1294         {
1295             ctmp = c->GetLastTerminal();
1296             if ( ctmp )
1297                 c2 = ctmp;
1298         }
1299         return c2;
1300     }
1301     else
1302         return NULL;
1303 }
1304
1305
1306 static bool IsEmptyContainer(wxHtmlContainerCell *cell)
1307 {
1308     for ( wxHtmlCell *c = cell->GetFirstChild(); c; c = c->GetNext() )
1309     {
1310         if ( !c->IsTerminalCell() || !c->IsFormattingCell() )
1311             return false;
1312     }
1313     return true;
1314 }
1315
1316 void wxHtmlContainerCell::RemoveExtraSpacing(bool top, bool bottom)
1317 {
1318     if ( top )
1319         SetIndent(0, wxHTML_INDENT_TOP);
1320     if ( bottom )
1321         SetIndent(0, wxHTML_INDENT_BOTTOM);
1322
1323     if ( m_Cells )
1324     {
1325         wxHtmlCell *c;
1326         wxHtmlContainerCell *cont;
1327         if ( top )
1328         {
1329             for ( c = m_Cells; c; c = c->GetNext() )
1330             {
1331                 if ( c->IsTerminalCell() )
1332                 {
1333                     if ( !c->IsFormattingCell() )
1334                         break;
1335                 }
1336                 else
1337                 {
1338                     cont = (wxHtmlContainerCell*)c;
1339                     if ( IsEmptyContainer(cont) )
1340                     {
1341                         cont->SetIndent(0, wxHTML_INDENT_VERTICAL);
1342                     }
1343                     else
1344                     {
1345                         cont->RemoveExtraSpacing(true, false);
1346                         break;
1347                     }
1348                 }
1349             }
1350         }
1351
1352         if ( bottom )
1353         {
1354             wxArrayPtrVoid arr;
1355             for ( c = m_Cells; c; c = c->GetNext() )
1356                 arr.Add((void*)c);
1357
1358             for ( int i = arr.GetCount() - 1; i >= 0; i--)
1359             {
1360                 c = (wxHtmlCell*)arr[i];
1361                 if ( c->IsTerminalCell() )
1362                 {
1363                     if ( !c->IsFormattingCell() )
1364                         break;
1365                 }
1366                 else
1367                 {
1368                     cont = (wxHtmlContainerCell*)c;
1369                     if ( IsEmptyContainer(cont) )
1370                     {
1371                         cont->SetIndent(0, wxHTML_INDENT_VERTICAL);
1372                     }
1373                     else
1374                     {
1375                         cont->RemoveExtraSpacing(false, true);
1376                         break;
1377                     }
1378                 }
1379             }
1380         }
1381     }
1382 }
1383
1384
1385
1386
1387 // --------------------------------------------------------------------------
1388 // wxHtmlColourCell
1389 // --------------------------------------------------------------------------
1390
1391 IMPLEMENT_ABSTRACT_CLASS(wxHtmlColourCell, wxHtmlCell)
1392
1393 void wxHtmlColourCell::Draw(wxDC& dc,
1394                             int x, int y,
1395                             int WXUNUSED(view_y1), int WXUNUSED(view_y2),
1396                             wxHtmlRenderingInfo& info)
1397 {
1398     DrawInvisible(dc, x, y, info);
1399 }
1400
1401 void wxHtmlColourCell::DrawInvisible(wxDC& dc,
1402                                      int WXUNUSED(x), int WXUNUSED(y),
1403                                      wxHtmlRenderingInfo& info)
1404 {
1405     wxHtmlRenderingState& state = info.GetState();
1406     if (m_Flags & wxHTML_CLR_FOREGROUND)
1407     {
1408         state.SetFgColour(m_Colour);
1409         if (state.GetSelectionState() != wxHTML_SEL_IN)
1410             dc.SetTextForeground(m_Colour);
1411         else
1412             dc.SetTextForeground(
1413                     info.GetStyle().GetSelectedTextColour(m_Colour));
1414     }
1415     if (m_Flags & wxHTML_CLR_BACKGROUND)
1416     {
1417         state.SetBgColour(m_Colour);
1418         if (state.GetSelectionState() != wxHTML_SEL_IN)
1419         {
1420             dc.SetTextBackground(m_Colour);
1421             dc.SetBackground(wxBrush(m_Colour, wxSOLID));
1422         }
1423         else
1424         {
1425             wxColour c = info.GetStyle().GetSelectedTextBgColour(m_Colour);
1426             dc.SetTextBackground(c);
1427             dc.SetBackground(wxBrush(c, wxSOLID));
1428         }
1429     }
1430 }
1431
1432
1433
1434
1435 // ---------------------------------------------------------------------------
1436 // wxHtmlFontCell
1437 // ---------------------------------------------------------------------------
1438
1439 IMPLEMENT_ABSTRACT_CLASS(wxHtmlFontCell, wxHtmlCell)
1440
1441 void wxHtmlFontCell::Draw(wxDC& dc,
1442                           int WXUNUSED(x), int WXUNUSED(y),
1443                           int WXUNUSED(view_y1), int WXUNUSED(view_y2),
1444                           wxHtmlRenderingInfo& WXUNUSED(info))
1445 {
1446     dc.SetFont(m_Font);
1447 }
1448
1449 void wxHtmlFontCell::DrawInvisible(wxDC& dc, int WXUNUSED(x), int WXUNUSED(y),
1450                                    wxHtmlRenderingInfo& WXUNUSED(info))
1451 {
1452     dc.SetFont(m_Font);
1453 }
1454
1455
1456
1457
1458
1459
1460
1461
1462 // ---------------------------------------------------------------------------
1463 // wxHtmlWidgetCell
1464 // ---------------------------------------------------------------------------
1465
1466 IMPLEMENT_ABSTRACT_CLASS(wxHtmlWidgetCell, wxHtmlCell)
1467
1468 wxHtmlWidgetCell::wxHtmlWidgetCell(wxWindow *wnd, int w)
1469 {
1470     int sx, sy;
1471     m_Wnd = wnd;
1472     m_Wnd->GetSize(&sx, &sy);
1473     m_Width = sx, m_Height = sy;
1474     m_WidthFloat = w;
1475 }
1476
1477
1478 void wxHtmlWidgetCell::Draw(wxDC& WXUNUSED(dc),
1479                             int WXUNUSED(x), int WXUNUSED(y),
1480                             int WXUNUSED(view_y1), int WXUNUSED(view_y2),
1481                             wxHtmlRenderingInfo& WXUNUSED(info))
1482 {
1483     int absx = 0, absy = 0, stx, sty;
1484     wxHtmlCell *c = this;
1485
1486     while (c)
1487     {
1488         absx += c->GetPosX();
1489         absy += c->GetPosY();
1490         c = c->GetParent();
1491     }
1492
1493     ((wxScrolledWindow*)(m_Wnd->GetParent()))->GetViewStart(&stx, &sty);
1494     m_Wnd->SetSize(absx - wxHTML_SCROLL_STEP * stx, absy  - wxHTML_SCROLL_STEP * sty, m_Width, m_Height);
1495 }
1496
1497
1498
1499 void wxHtmlWidgetCell::DrawInvisible(wxDC& WXUNUSED(dc),
1500                                      int WXUNUSED(x), int WXUNUSED(y),
1501                                      wxHtmlRenderingInfo& WXUNUSED(info))
1502 {
1503     int absx = 0, absy = 0, stx, sty;
1504     wxHtmlCell *c = this;
1505
1506     while (c)
1507     {
1508         absx += c->GetPosX();
1509         absy += c->GetPosY();
1510         c = c->GetParent();
1511     }
1512
1513     ((wxScrolledWindow*)(m_Wnd->GetParent()))->GetViewStart(&stx, &sty);
1514     m_Wnd->SetSize(absx - wxHTML_SCROLL_STEP * stx, absy  - wxHTML_SCROLL_STEP * sty, m_Width, m_Height);
1515 }
1516
1517
1518
1519 void wxHtmlWidgetCell::Layout(int w)
1520 {
1521     if (m_WidthFloat != 0)
1522     {
1523         m_Width = (w * m_WidthFloat) / 100;
1524         m_Wnd->SetSize(m_Width, m_Height);
1525     }
1526
1527     wxHtmlCell::Layout(w);
1528 }
1529
1530
1531
1532 // ----------------------------------------------------------------------------
1533 // wxHtmlTerminalCellsInterator
1534 // ----------------------------------------------------------------------------
1535
1536 const wxHtmlCell* wxHtmlTerminalCellsInterator::operator++()
1537 {
1538     if ( !m_pos )
1539         return NULL;
1540
1541     do
1542     {
1543         if ( m_pos == m_to )
1544         {
1545             m_pos = NULL;
1546             return NULL;
1547         }
1548
1549         if ( m_pos->GetNext() )
1550             m_pos = m_pos->GetNext();
1551         else
1552         {
1553             // we must go up the hierarchy until we reach container where this
1554             // is not the last child, and then go down to first terminal cell:
1555             while ( m_pos->GetNext() == NULL )
1556             {
1557                 m_pos = m_pos->GetParent();
1558                 if ( !m_pos )
1559                     return NULL;
1560             }
1561             m_pos = m_pos->GetNext();
1562         }
1563         while ( m_pos->GetFirstChild() != NULL )
1564             m_pos = m_pos->GetFirstChild();
1565     } while ( !m_pos->IsTerminalCell() );
1566
1567     return m_pos;
1568 }
1569
1570 #endif