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     // (include character under caret only if in first half of width)
 412 #ifdef __WXMAC__
 413     // implementation using PartialExtents to support fractional widths
 414     wxArrayInt widths ;
 415     dc.GetPartialTextExtents(m_Word,widths) ;
 416     while( i < len && pt1.x >= widths[i] )
 417         i++ ;
 418     if ( i < len )
 419     {
 420         int charW = (i > 0) ? widths[i] - widths[i-1] : widths[i];
 421         if ( widths[i] - pt1.x < charW/2 )
 422             i++;
 423     }
 424 #else // !__WXMAC__
 425     wxCoord charW, charH;
 426     while ( pt1.x > 0 && i < len )
 427     {
 428         dc.GetTextExtent(m_Word[i], &charW, &charH);
 429         pt1.x -= charW;
 430         if ( pt1.x >= -charW/2 )
 431         {
 432             pos1 += charW;
 433             i++;
 434         }
 435     }
 436 #endif // __WXMAC__/!__WXMAC__
 437
 438     // in selection:
 439     // (include character under caret only if in first half of width)
 440     unsigned j = i;
 441 #ifdef __WXMAC__
 442     while( j < len && pt2.x >= widths[j] )
 443         j++ ;
 444     if ( j < len )
 445     {
 446         int charW = (j > 0) ? widths[j] - widths[j-1] : widths[j];
 447         if ( widths[j] - pt2.x < charW/2 )
 448             j++;
 449     }
 450 #else // !__WXMAC__
 451     pos2 = pos1;
 452     pt2.x -= pos2;
 453     while ( pt2.x > 0 && j < len )
 454     {
 455         dc.GetTextExtent(m_Word[j], &charW, &charH);
 456         pt2.x -= charW;
 457         if ( pt2.x >= -charW/2 )
 458         {
 459             pos2 += charW;
 460             j++;
 461         }
 462     }
 463 #endif // __WXMAC__/!__WXMAC__
 464
 465     pos1 = i;
 466     pos2 = j;
 467 }
 468
 469 void wxHtmlWordCell::SetSelectionPrivPos(const wxDC& dc, wxHtmlSelection *s) const
 470 {
 471     unsigned p1, p2;
 472
 473     Split(dc,
 474           this == s->GetFromCell() ? s->GetFromPos() : wxDefaultPosition,
 475           this == s->GetToCell() ? s->GetToPos() : wxDefaultPosition,
 476           p1, p2);
 477
 478     wxPoint p(0, m_Word.length());
 479
 480     if ( this == s->GetFromCell() )
 481         p.x = p1; // selection starts here
 482     if ( this == s->GetToCell() )
 483         p.y = p2; // selection ends here
 484
 485     if ( this == s->GetFromCell() )
 486         s->SetFromPrivPos(p);
 487     if ( this == s->GetToCell() )
 488         s->SetToPrivPos(p);
 489 }
 490
 491
 492 static void SwitchSelState(wxDC& dc, wxHtmlRenderingInfo& info,
 493                            bool toSelection)
 494 {
 495     wxColour fg = info.GetState().GetFgColour();
 496     wxColour bg = info.GetState().GetBgColour();
 497
 498     if ( toSelection )
 499     {
 500         dc.SetBackgroundMode(wxBRUSHSTYLE_SOLID);
 501         dc.SetTextForeground(info.GetStyle().GetSelectedTextColour(fg));
 502         dc.SetTextBackground(info.GetStyle().GetSelectedTextBgColour(bg));
 503         dc.SetBackground(wxBrush(info.GetStyle().GetSelectedTextBgColour(bg),
 504                                  wxBRUSHSTYLE_SOLID));
 505     }
 506     else
 507     {
 508         dc.SetBackgroundMode(wxBRUSHSTYLE_TRANSPARENT);
 509         dc.SetTextForeground(fg);
 510         dc.SetTextBackground(bg);
 511         dc.SetBackground(wxBrush(bg, wxBRUSHSTYLE_SOLID));
 512     }
 513 }
 514
 515
 516 void wxHtmlWordCell::Draw(wxDC& dc, int x, int y,
 517                           int WXUNUSED(view_y1), int WXUNUSED(view_y2),
 518                           wxHtmlRenderingInfo& info)
 519 {
 520 #if 0 // useful for debugging
 521     dc.SetPen(*wxBLACK_PEN);
 522     dc.DrawRectangle(x+m_PosX,y+m_PosY,m_Width /* VZ: +1? */ ,m_Height);
 523 #endif
 524
 525     bool drawSelectionAfterCell = false;
 526
 527     if ( info.GetState().GetSelectionState() == wxHTML_SEL_CHANGING )
 528     {
 529         // Selection changing, we must draw the word piecewise:
 530         wxHtmlSelection *s = info.GetSelection();
 531         wxString txt;
 532         int w, h;
 533         int ofs = 0;
 534
 535         wxPoint priv = (this == s->GetFromCell()) ?
 536                            s->GetFromPrivPos() : s->GetToPrivPos();
 537
 538         // NB: this is quite a hack: in order to compute selection boundaries
 539         //     (in word's characters) we must know current font, which is only
 540         //     possible inside rendering code. Therefore we update the
 541         //     information here and store it in wxHtmlSelection so that
 542         //     ConvertToText can use it later:
 543         if ( priv == wxDefaultPosition )
 544         {
 545             SetSelectionPrivPos(dc, s);
 546             priv = (this == s->GetFromCell()) ?
 547                     s->GetFromPrivPos() : s->GetToPrivPos();
 548         }
 549
 550         int part1 = priv.x;
 551         int part2 = priv.y;
 552
 553         if ( part1 > 0 )
 554         {
 555             txt = m_Word.Mid(0, part1);
 556             dc.DrawText(txt, x + m_PosX, y + m_PosY);
 557             dc.GetTextExtent(txt, &w, &h);
 558             ofs += w;
 559         }
 560
 561         SwitchSelState(dc, info, true);
 562
 563         txt = m_Word.Mid(part1, part2-part1);
 564         dc.DrawText(txt, ofs + x + m_PosX, y + m_PosY);
 565
 566         if ( (size_t)part2 < m_Word.length() )
 567         {
 568             dc.GetTextExtent(txt, &w, &h);
 569             ofs += w;
 570             SwitchSelState(dc, info, false);
 571             txt = m_Word.Mid(part2);
 572             dc.DrawText(txt, ofs + x + m_PosX, y + m_PosY);
 573         }
 574         else
 575             drawSelectionAfterCell = true;
 576     }
 577     else
 578     {
 579         wxHtmlSelectionState selstate = info.GetState().GetSelectionState();
 580         // Not changing selection state, draw the word in single mode:
 581         if ( selstate != wxHTML_SEL_OUT &&
 582              dc.GetBackgroundMode() != wxBRUSHSTYLE_SOLID )
 583         {
 584             SwitchSelState(dc, info, true);
 585         }
 586         else if ( selstate == wxHTML_SEL_OUT &&
 587                   dc.GetBackgroundMode() == wxBRUSHSTYLE_SOLID )
 588         {
 589             SwitchSelState(dc, info, false);
 590         }
 591         dc.DrawText(m_Word, x + m_PosX, y + m_PosY);
 592         drawSelectionAfterCell = (selstate != wxHTML_SEL_OUT);
 593     }
 594
 595     // NB: If the text is justified then there is usually some free space
 596     //     between adjacent cells and drawing the selection only onto cells
 597     //     would result in ugly unselected spaces. The code below detects
 598     //     this special case and renders the selection *outside* the sell,
 599     //     too.
 600     if ( m_Parent->GetAlignHor() == wxHTML_ALIGN_JUSTIFY &&
 601          drawSelectionAfterCell )
 602     {
 603         wxHtmlCell *nextCell = m_Next;
 604         while ( nextCell && nextCell->IsFormattingCell() )
 605             nextCell = nextCell->GetNext();
 606         if ( nextCell )
 607         {
 608             int nextX = nextCell->GetPosX();
 609             if ( m_PosX + m_Width < nextX )
 610             {
 611                 dc.SetBrush(dc.GetBackground());
 612                 dc.SetPen(*wxTRANSPARENT_PEN);
 613                 dc.DrawRectangle(x + m_PosX + m_Width, y + m_PosY,
 614                                  nextX - m_PosX - m_Width, m_Height);
 615             }
 616         }
 617     }
 618 }
 619
 620
 621 wxString wxHtmlWordCell::ConvertToText(wxHtmlSelection *s) const
 622 {
 623     if ( s && (this == s->GetFromCell() || this == s->GetToCell()) )
 624     {
 625         wxPoint priv = this == s->GetFromCell() ? s->GetFromPrivPos()
 626                                                 : s->GetToPrivPos();
 627
 628         // VZ: we may be called before we had a chance to re-render ourselves
 629         //     and in this case GetFrom/ToPrivPos() is not set yet -- assume
 630         //     that this only happens in case of a double/triple click (which
 631         //     seems to be the case now) and so it makes sense to select the
 632         //     entire contents of the cell in this case
 633         //
 634         // TODO: but this really needs to be fixed in some better way later...
 635         if ( priv != wxDefaultPosition )
 636         {
 637             int part1 = priv.x;
 638             int part2 = priv.y;
 639             return m_Word.Mid(part1, part2-part1);
 640         }
 641         //else: return the whole word below
 642     }
 643
 644     return m_Word;
 645 }
 646
 647 wxCursor wxHtmlWordCell::GetMouseCursor(wxHtmlWindowInterface *window) const
 648 {
 649     if ( !GetLink() )
 650     {
 651         return window->GetHTMLCursor(wxHtmlWindowInterface::HTMLCursor_Text);
 652     }
 653     else
 654     {
 655         return wxHtmlCell::GetMouseCursor(window);
 656     }
 657 }
 658
 659
 660 //-----------------------------------------------------------------------------
 661 // wxHtmlContainerCell
 662 //-----------------------------------------------------------------------------
 663
 664 IMPLEMENT_ABSTRACT_CLASS(wxHtmlContainerCell, wxHtmlCell)
 665
 666 wxHtmlContainerCell::wxHtmlContainerCell(wxHtmlContainerCell *parent) : wxHtmlCell()
 667 {
 668     m_Cells = m_LastCell = NULL;
 669     m_Parent = parent;
 670     m_MaxTotalWidth = 0;
 671     if (m_Parent) m_Parent->InsertCell(this);
 672     m_AlignHor = wxHTML_ALIGN_LEFT;
 673     m_AlignVer = wxHTML_ALIGN_BOTTOM;
 674     m_IndentLeft = m_IndentRight = m_IndentTop = m_IndentBottom = 0;
 675     m_WidthFloat = 100; m_WidthFloatUnits = wxHTML_UNITS_PERCENT;
 676     m_UseBkColour = false;
 677     m_UseBorder = false;
 678     m_MinHeight = 0;
 679     m_MinHeightAlign = wxHTML_ALIGN_TOP;
 680     m_LastLayout = -1;
 681 }
 682
 683 wxHtmlContainerCell::~wxHtmlContainerCell()
 684 {
 685     wxHtmlCell *cell = m_Cells;
 686     while ( cell )
 687     {
 688         wxHtmlCell *cellNext = cell->GetNext();
 689         delete cell;
 690         cell = cellNext;
 691     }
 692 }
 693
 694
 695
 696 void wxHtmlContainerCell::SetIndent(int i, int what, int units)
 697 {
 698     int val = (units == wxHTML_UNITS_PIXELS) ? i : -i;
 699     if (what & wxHTML_INDENT_LEFT) m_IndentLeft = val;
 700     if (what & wxHTML_INDENT_RIGHT) m_IndentRight = val;
 701     if (what & wxHTML_INDENT_TOP) m_IndentTop = val;
 702     if (what & wxHTML_INDENT_BOTTOM) m_IndentBottom = val;
 703     m_LastLayout = -1;
 704 }
 705
 706
 707
 708 int wxHtmlContainerCell::GetIndent(int ind) const
 709 {
 710     if (ind & wxHTML_INDENT_LEFT) return m_IndentLeft;
 711     else if (ind & wxHTML_INDENT_RIGHT) return m_IndentRight;
 712     else if (ind & wxHTML_INDENT_TOP) return m_IndentTop;
 713     else if (ind & wxHTML_INDENT_BOTTOM) return m_IndentBottom;
 714     else return -1; /* BUG! Should not be called... */
 715 }
 716
 717
 718
 719
 720 int wxHtmlContainerCell::GetIndentUnits(int ind) const
 721 {
 722     bool p = false;
 723     if (ind & wxHTML_INDENT_LEFT) p = m_IndentLeft < 0;
 724     else if (ind & wxHTML_INDENT_RIGHT) p = m_IndentRight < 0;
 725     else if (ind & wxHTML_INDENT_TOP) p = m_IndentTop < 0;
 726     else if (ind & wxHTML_INDENT_BOTTOM) p = m_IndentBottom < 0;
 727     if (p) return wxHTML_UNITS_PERCENT;
 728     else return wxHTML_UNITS_PIXELS;
 729 }
 730
 731
 732 bool wxHtmlContainerCell::AdjustPagebreak(int *pagebreak,
 733                                           wxArrayInt& known_pagebreaks) const
 734 {
 735     if (!m_CanLiveOnPagebreak)
 736         return wxHtmlCell::AdjustPagebreak(pagebreak, known_pagebreaks);
 737
 738     wxHtmlCell *c = GetFirstChild();
 739     bool rt = false;
 740     int pbrk = *pagebreak - m_PosY;
 741
 742     while (c)
 743     {
 744         if (c->AdjustPagebreak(&pbrk, known_pagebreaks))
 745             rt = true;
 746         c = c->GetNext();
 747     }
 748     if (rt)
 749         *pagebreak = pbrk + m_PosY;
 750     return rt;
 751 }
 752
 753
 754 void wxHtmlContainerCell::Layout(int w)
 755 {
 756     wxHtmlCell::Layout(w);
 757
 758     if (m_LastLayout == w)
 759         return;
 760     m_LastLayout = w;
 761
 762     // VS: Any attempt to layout with negative or zero width leads to hell,
 763     // but we can't ignore such attempts completely, since it sometimes
 764     // happen (e.g. when trying how small a table can be). The best thing we
 765     // can do is to set the width of child cells to zero
 766     if (w < 1)
 767     {
 768        m_Width = 0;
 769        for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
 770             cell->Layout(0);
 771             // this does two things: it recursively calls this code on all
 772             // child contrainers and resets children's position to (0,0)
 773        return;
 774     }
 775
 776     wxHtmlCell *nextCell;
 777     long xpos = 0, ypos = m_IndentTop;
 778     int xdelta = 0, ybasicpos = 0, ydiff;
 779     int s_width, nextWordWidth, s_indent;
 780     int ysizeup = 0, ysizedown = 0;
 781     int MaxLineWidth = 0;
 782     int curLineWidth = 0;
 783     m_MaxTotalWidth = 0;
 784
 785
 786     /*
 787
 788     WIDTH ADJUSTING :
 789
 790     */
 791
 792     if (m_WidthFloatUnits == wxHTML_UNITS_PERCENT)
 793     {
 794         if (m_WidthFloat < 0) m_Width = (100 + m_WidthFloat) * w / 100;
 795         else m_Width = m_WidthFloat * w / 100;
 796     }
 797     else
 798     {
 799         if (m_WidthFloat < 0) m_Width = w + m_WidthFloat;
 800         else m_Width = m_WidthFloat;
 801     }
 802
 803     if (m_Cells)
 804     {
 805         int l = (m_IndentLeft < 0) ? (-m_IndentLeft * m_Width / 100) : m_IndentLeft;
 806         int r = (m_IndentRight < 0) ? (-m_IndentRight * m_Width / 100) : m_IndentRight;
 807         for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
 808             cell->Layout(m_Width - (l + r));
 809     }
 810
 811     /*
 812
 813     LAYOUTING :
 814
 815     */
 816
 817     // adjust indentation:
 818     s_indent = (m_IndentLeft < 0) ? (-m_IndentLeft * m_Width / 100) : m_IndentLeft;
 819     s_width = m_Width - s_indent - ((m_IndentRight < 0) ? (-m_IndentRight * m_Width / 100) : m_IndentRight);
 820
 821     // my own layouting:
 822     wxHtmlCell *cell = m_Cells,
 823                *line = m_Cells;
 824     while (cell != NULL)
 825     {
 826         switch (m_AlignVer)
 827         {
 828             case wxHTML_ALIGN_TOP :      ybasicpos = 0; break;
 829             case wxHTML_ALIGN_BOTTOM :   ybasicpos = - cell->GetHeight(); break;
 830             case wxHTML_ALIGN_CENTER :   ybasicpos = - cell->GetHeight() / 2; break;
 831         }
 832         ydiff = cell->GetHeight() + ybasicpos;
 833
 834         if (cell->GetDescent() + ydiff > ysizedown) ysizedown = cell->GetDescent() + ydiff;
 835         if (ybasicpos + cell->GetDescent() < -ysizeup) ysizeup = - (ybasicpos + cell->GetDescent());
 836
 837         // layout nonbreakable run of cells:
 838         cell->SetPos(xpos, ybasicpos + cell->GetDescent());
 839         xpos += cell->GetWidth();
 840         if (!cell->IsTerminalCell())
 841         {
 842             // Container cell indicates new line
 843             if (curLineWidth > m_MaxTotalWidth)
 844                 m_MaxTotalWidth = curLineWidth;
 845
 846             if (wxMax(cell->GetWidth(), cell->GetMaxTotalWidth()) > m_MaxTotalWidth)
 847                 m_MaxTotalWidth = cell->GetMaxTotalWidth();
 848             curLineWidth = 0;
 849         }
 850         else
 851             // Normal cell, add maximum cell width to line width
 852             curLineWidth += cell->GetMaxTotalWidth();
 853
 854         cell = cell->GetNext();
 855
 856         // compute length of the next word that would be added:
 857         nextWordWidth = 0;
 858         if (cell)
 859         {
 860             nextCell = cell;
 861             do
 862             {
 863                 nextWordWidth += nextCell->GetWidth();
 864                 nextCell = nextCell->GetNext();
 865             } while (nextCell && !nextCell->IsLinebreakAllowed());
 866         }
 867
 868         // force new line if occurred:
 869         if ((cell == NULL) ||
 870             (xpos + nextWordWidth > s_width && cell->IsLinebreakAllowed()))
 871         {
 872             if (xpos > MaxLineWidth) MaxLineWidth = xpos;
 873             if (ysizeup < 0) ysizeup = 0;
 874             if (ysizedown < 0) ysizedown = 0;
 875             switch (m_AlignHor) {
 876                 case wxHTML_ALIGN_LEFT :
 877                 case wxHTML_ALIGN_JUSTIFY :
 878                          xdelta = 0;
 879                          break;
 880                 case wxHTML_ALIGN_RIGHT :
 881                          xdelta = 0 + (s_width - xpos);
 882                          break;
 883                 case wxHTML_ALIGN_CENTER :
 884                          xdelta = 0 + (s_width - xpos) / 2;
 885                          break;
 886             }
 887             if (xdelta < 0) xdelta = 0;
 888             xdelta += s_indent;
 889
 890             ypos += ysizeup;
 891
 892             if (m_AlignHor != wxHTML_ALIGN_JUSTIFY || cell == NULL)
 893             {
 894                 while (line != cell)
 895                 {
 896                     line->SetPos(line->GetPosX() + xdelta,
 897                                    ypos + line->GetPosY());
 898                     line = line->GetNext();
 899                 }
 900             }
 901             else // align == justify
 902             {
 903                 // we have to distribute the extra horz space between the cells
 904                 // on this line
 905
 906                 // an added complication is that some cells have fixed size and
 907                 // shouldn't get any increment (it so happens that these cells
 908                 // also don't allow line break on them which provides with an
 909                 // easy way to test for this) -- and neither should the cells
 910                 // adjacent to them as this could result in a visible space
 911                 // between two cells separated by, e.g. font change, cell which
 912                 // is wrong
 913
 914                 int step = s_width - xpos;
 915                 if ( step > 0 )
 916                 {
 917                     // first count the cells which will get extra space
 918                     int total = -1;
 919
 920                     const wxHtmlCell *c;
 921                     if ( line != cell )
 922                     {
 923                         for ( c = line; c != cell; c = c->GetNext() )
 924                         {
 925                             if ( c->IsLinebreakAllowed() )
 926                             {
 927                                 total++;
 928                             }
 929                         }
 930                     }
 931
 932                     // and now extra space to those cells which merit it
 933                     if ( total )
 934                     {
 935                         // first visible cell on line is not moved:
 936                         while (line !=cell && !line->IsLinebreakAllowed())
 937                         {
 938                             line->SetPos(line->GetPosX() + s_indent,
 939                                          line->GetPosY() + ypos);
 940                             line = line->GetNext();
 941                         }
 942
 943                         if (line != cell)
 944                         {
 945                             line->SetPos(line->GetPosX() + s_indent,
 946                                          line->GetPosY() + ypos);
 947
 948                             line = line->GetNext();
 949                         }
 950
 951                         for ( int n = 0; line != cell; line = line->GetNext() )
 952                         {
 953                             if ( line->IsLinebreakAllowed() )
 954                             {
 955                                 // offset the next cell relative to this one
 956                                 // thus increasing our size
 957                                 n++;
 958                             }
 959
 960                             line->SetPos(line->GetPosX() + s_indent +
 961                                            ((n * step) / total),
 962                                            line->GetPosY() + ypos);
 963                         }
 964                     }
 965                     else
 966                     {
 967                         // this will cause the code to enter "else branch" below:
 968                         step = 0;
 969                     }
 970                 }
 971                 // else branch:
 972                 if ( step <= 0 ) // no extra space to distribute
 973                 {
 974                     // just set the indent properly
 975                     while (line != cell)
 976                     {
 977                         line->SetPos(line->GetPosX() + s_indent,
 978                                      line->GetPosY() + ypos);
 979                         line = line->GetNext();
 980                     }
 981                 }
 982             }
 983
 984             ypos += ysizedown;
 985             xpos = 0;
 986             ysizeup = ysizedown = 0;
 987             line = cell;
 988         }
 989     }
 990
 991     // setup height & width, depending on container layout:
 992     m_Height = ypos + (ysizedown + ysizeup) + m_IndentBottom;
 993
 994     if (m_Height < m_MinHeight)
 995     {
 996         if (m_MinHeightAlign != wxHTML_ALIGN_TOP)
 997         {
 998             int diff = m_MinHeight - m_Height;
 999             if (m_MinHeightAlign == wxHTML_ALIGN_CENTER) diff /= 2;
1000             cell = m_Cells;
1001             while (cell)
1002             {
1003                 cell->SetPos(cell->GetPosX(), cell->GetPosY() + diff);
1004                 cell = cell->GetNext();
1005             }
1006         }
1007         m_Height = m_MinHeight;
1008     }
1009
1010     if (curLineWidth > m_MaxTotalWidth)
1011         m_MaxTotalWidth = curLineWidth;
1012
1013     m_MaxTotalWidth += s_indent + ((m_IndentRight < 0) ? (-m_IndentRight * m_Width / 100) : m_IndentRight);
1014     MaxLineWidth += s_indent + ((m_IndentRight < 0) ? (-m_IndentRight * m_Width / 100) : m_IndentRight);
1015     if (m_Width < MaxLineWidth) m_Width = MaxLineWidth;
1016 }
1017
1018 void wxHtmlContainerCell::UpdateRenderingStatePre(wxHtmlRenderingInfo& info,
1019                                                   wxHtmlCell *cell) const
1020 {
1021     wxHtmlSelection *s = info.GetSelection();
1022     if (!s) return;
1023     if (s->GetFromCell() == cell || s->GetToCell() == cell)
1024     {
1025         info.GetState().SetSelectionState(wxHTML_SEL_CHANGING);
1026     }
1027 }
1028
1029 void wxHtmlContainerCell::UpdateRenderingStatePost(wxHtmlRenderingInfo& info,
1030                                                    wxHtmlCell *cell) const
1031 {
1032     wxHtmlSelection *s = info.GetSelection();
1033     if (!s) return;
1034     if (s->GetToCell() == cell)
1035         info.GetState().SetSelectionState(wxHTML_SEL_OUT);
1036     else if (s->GetFromCell() == cell)
1037         info.GetState().SetSelectionState(wxHTML_SEL_IN);
1038 }
1039
1040 #define mMin(a, b) (((a) < (b)) ? (a) : (b))
1041 #define mMax(a, b) (((a) < (b)) ? (b) : (a))
1042
1043 void wxHtmlContainerCell::Draw(wxDC& dc, int x, int y, int view_y1, int view_y2,
1044                                wxHtmlRenderingInfo& info)
1045 {
1046 #if 0 // useful for debugging
1047     dc.SetPen(*wxRED_PEN);
1048     dc.DrawRectangle(x+m_PosX,y+m_PosY,m_Width,m_Height);
1049 #endif
1050
1051     int xlocal = x + m_PosX;
1052     int ylocal = y + m_PosY;
1053
1054     if (m_UseBkColour)
1055     {
1056         wxBrush myb = wxBrush(m_BkColour, wxBRUSHSTYLE_SOLID);
1057
1058         int real_y1 = mMax(ylocal, view_y1);
1059         int real_y2 = mMin(ylocal + m_Height - 1, view_y2);
1060
1061         dc.SetBrush(myb);
1062         dc.SetPen(*wxTRANSPARENT_PEN);
1063         dc.DrawRectangle(xlocal, real_y1, m_Width, real_y2 - real_y1 + 1);
1064     }
1065
1066     if (m_UseBorder)
1067     {
1068         wxPen mypen1(m_BorderColour1, 1, wxPENSTYLE_SOLID);
1069         wxPen mypen2(m_BorderColour2, 1, wxPENSTYLE_SOLID);
1070
1071         dc.SetPen(mypen1);
1072         dc.DrawLine(xlocal, ylocal, xlocal, ylocal + m_Height - 1);
1073         dc.DrawLine(xlocal, ylocal, xlocal + m_Width, ylocal);
1074         dc.SetPen(mypen2);
1075         dc.DrawLine(xlocal + m_Width - 1, ylocal, xlocal +  m_Width - 1, ylocal + m_Height - 1);
1076         dc.DrawLine(xlocal, ylocal + m_Height - 1, xlocal + m_Width, ylocal + m_Height - 1);
1077     }
1078
1079     if (m_Cells)
1080     {
1081         // draw container's contents:
1082         for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
1083         {
1084
1085             // optimize drawing: don't render off-screen content:
1086             if ((ylocal + cell->GetPosY() <= view_y2) &&
1087                 (ylocal + cell->GetPosY() + cell->GetHeight() > view_y1))
1088             {
1089                 // the cell is visible, draw it:
1090                 UpdateRenderingStatePre(info, cell);
1091                 cell->Draw(dc,
1092                            xlocal, ylocal, view_y1, view_y2,
1093                            info);
1094                 UpdateRenderingStatePost(info, cell);
1095             }
1096             else
1097             {
1098                 // the cell is off-screen, proceed with font+color+etc.
1099                 // changes only:
1100                 cell->DrawInvisible(dc, xlocal, ylocal, info);
1101             }
1102         }
1103     }
1104 }
1105
1106
1107
1108 void wxHtmlContainerCell::DrawInvisible(wxDC& dc, int x, int y,
1109                                         wxHtmlRenderingInfo& info)
1110 {
1111     if (m_Cells)
1112     {
1113         for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
1114         {
1115             UpdateRenderingStatePre(info, cell);
1116             cell->DrawInvisible(dc, x + m_PosX, y + m_PosY, info);
1117             UpdateRenderingStatePost(info, cell);
1118         }
1119     }
1120 }
1121
1122
1123 wxColour wxHtmlContainerCell::GetBackgroundColour()
1124 {
1125     if (m_UseBkColour)
1126         return m_BkColour;
1127     else
1128         return wxNullColour;
1129 }
1130
1131
1132
1133 wxHtmlLinkInfo *wxHtmlContainerCell::GetLink(int x, int y) const
1134 {
1135     wxHtmlCell *cell = FindCellByPos(x, y);
1136
1137     // VZ: I don't know if we should pass absolute or relative coords to
1138     //     wxHtmlCell::GetLink()? As the base class version just ignores them
1139     //     anyhow, it hardly matters right now but should still be clarified
1140     return cell ? cell->GetLink(x, y) : NULL;
1141 }
1142
1143
1144
1145 void wxHtmlContainerCell::InsertCell(wxHtmlCell *f)
1146 {
1147     if (!m_Cells) m_Cells = m_LastCell = f;
1148     else
1149     {
1150         m_LastCell->SetNext(f);
1151         m_LastCell = f;
1152         if (m_LastCell) while (m_LastCell->GetNext()) m_LastCell = m_LastCell->GetNext();
1153     }
1154     f->SetParent(this);
1155     m_LastLayout = -1;
1156 }
1157
1158
1159
1160 void wxHtmlContainerCell::SetAlign(const wxHtmlTag& tag)
1161 {
1162     if (tag.HasParam(wxT("ALIGN")))
1163     {
1164         wxString alg = tag.GetParam(wxT("ALIGN"));
1165         alg.MakeUpper();
1166         if (alg == wxT("CENTER"))
1167             SetAlignHor(wxHTML_ALIGN_CENTER);
1168         else if (alg == wxT("LEFT"))
1169             SetAlignHor(wxHTML_ALIGN_LEFT);
1170         else if (alg == wxT("JUSTIFY"))
1171             SetAlignHor(wxHTML_ALIGN_JUSTIFY);
1172         else if (alg == wxT("RIGHT"))
1173             SetAlignHor(wxHTML_ALIGN_RIGHT);
1174         m_LastLayout = -1;
1175     }
1176 }
1177
1178
1179
1180 void wxHtmlContainerCell::SetWidthFloat(const wxHtmlTag& tag, double pixel_scale)
1181 {
1182     if (tag.HasParam(wxT("WIDTH")))
1183     {
1184         int wdi;
1185         wxString wd = tag.GetParam(wxT("WIDTH"));
1186
1187         if (wd[wd.length()-1] == wxT('%'))
1188         {
1189             wxSscanf(wd.c_str(), wxT("%i%%"), &wdi);
1190             SetWidthFloat(wdi, wxHTML_UNITS_PERCENT);
1191         }
1192         else
1193         {
1194             wxSscanf(wd.c_str(), wxT("%i"), &wdi);
1195             SetWidthFloat((int)(pixel_scale * (double)wdi), wxHTML_UNITS_PIXELS);
1196         }
1197         m_LastLayout = -1;
1198     }
1199 }
1200
1201
1202
1203 const wxHtmlCell* wxHtmlContainerCell::Find(int condition, const void* param) const
1204 {
1205     if (m_Cells)
1206     {
1207         for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
1208         {
1209             const wxHtmlCell *r = cell->Find(condition, param);
1210             if (r) return r;
1211         }
1212     }
1213     return NULL;
1214 }
1215
1216
1217 wxHtmlCell *wxHtmlContainerCell::FindCellByPos(wxCoord x, wxCoord y,
1218                                                unsigned flags) const
1219 {
1220     if ( flags & wxHTML_FIND_EXACT )
1221     {
1222         for ( const wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext() )
1223         {
1224             int cx = cell->GetPosX(),
1225                 cy = cell->GetPosY();
1226
1227             if ( (cx <= x) && (cx + cell->GetWidth() > x) &&
1228                  (cy <= y) && (cy + cell->GetHeight() > y) )
1229             {
1230                 return cell->FindCellByPos(x - cx, y - cy, flags);
1231             }
1232         }
1233     }
1234     else if ( flags & wxHTML_FIND_NEAREST_AFTER )
1235     {
1236         wxHtmlCell *c;
1237         for ( const wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext() )
1238         {
1239             if ( cell->IsFormattingCell() )
1240                 continue;
1241             int cellY = cell->GetPosY();
1242             if (!( y < cellY || (y < cellY + cell->GetHeight() &&
1243                                  x < cell->GetPosX() + cell->GetWidth()) ))
1244                 continue;
1245
1246             c = cell->FindCellByPos(x - cell->GetPosX(), y - cellY, flags);
1247             if (c) return c;
1248         }
1249     }
1250     else if ( flags & wxHTML_FIND_NEAREST_BEFORE )
1251     {
1252         wxHtmlCell *c2, *c = NULL;
1253         for ( const wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext() )
1254         {
1255             if ( cell->IsFormattingCell() )
1256                 continue;
1257             int cellY = cell->GetPosY();
1258             if (!( cellY + cell->GetHeight() <= y ||
1259                    (y >= cellY && x >= cell->GetPosX()) ))
1260                 break;
1261             c2 = cell->FindCellByPos(x - cell->GetPosX(), y - cellY, flags);
1262             if (c2)
1263                 c = c2;
1264         }
1265         if (c) return c;
1266     }
1267
1268     return NULL;
1269 }
1270
1271
1272 bool wxHtmlContainerCell::ProcessMouseClick(wxHtmlWindowInterface *window,
1273                                             const wxPoint& pos,
1274                                             const wxMouseEvent& event)
1275 {
1276 #if WXWIN_COMPATIBILITY_2_6
1277     wxHtmlCellOnMouseClickCompatHelper compat(window, pos, event);
1278     return compat.CallOnMouseClick(this);
1279 }
1280
1281 void wxHtmlContainerCell::OnMouseClick(wxWindow*,
1282                                        int, int, const wxMouseEvent& event)
1283 {
1284     wxCHECK_RET( gs_helperOnMouseClick, _T("unexpected call to OnMouseClick") );
1285     wxHtmlWindowInterface *window = gs_helperOnMouseClick->window;
1286     const wxPoint& pos = gs_helperOnMouseClick->pos;
1287 #endif // WXWIN_COMPATIBILITY_2_6
1288
1289     bool retval = false;
1290     wxHtmlCell *cell = FindCellByPos(pos.x, pos.y);
1291     if ( cell )
1292         retval = cell->ProcessMouseClick(window, pos, event);
1293
1294 #if WXWIN_COMPATIBILITY_2_6
1295     gs_helperOnMouseClick->retval = retval;
1296 #else
1297     return retval;
1298 #endif // WXWIN_COMPATIBILITY_2_6
1299 }
1300
1301
1302 wxHtmlCell *wxHtmlContainerCell::GetFirstTerminal() const
1303 {
1304     if ( m_Cells )
1305     {
1306         wxHtmlCell *c2;
1307         for (wxHtmlCell *c = m_Cells; c; c = c->GetNext())
1308         {
1309             c2 = c->GetFirstTerminal();
1310             if ( c2 )
1311                 return c2;
1312         }
1313     }
1314     return NULL;
1315 }
1316
1317 wxHtmlCell *wxHtmlContainerCell::GetLastTerminal() const
1318 {
1319     if ( m_Cells )
1320     {
1321         // most common case first:
1322         wxHtmlCell *c = m_LastCell->GetLastTerminal();
1323         if ( c )
1324             return c;
1325
1326         wxHtmlCell *ctmp;
1327         wxHtmlCell *c2 = NULL;
1328         for (c = m_Cells; c; c = c->GetNext())
1329         {
1330             ctmp = c->GetLastTerminal();
1331             if ( ctmp )
1332                 c2 = ctmp;
1333         }
1334         return c2;
1335     }
1336     else
1337         return NULL;
1338 }
1339
1340
1341 static bool IsEmptyContainer(wxHtmlContainerCell *cell)
1342 {
1343     for ( wxHtmlCell *c = cell->GetFirstChild(); c; c = c->GetNext() )
1344     {
1345         if ( !c->IsTerminalCell() || !c->IsFormattingCell() )
1346             return false;
1347     }
1348     return true;
1349 }
1350
1351 void wxHtmlContainerCell::RemoveExtraSpacing(bool top, bool bottom)
1352 {
1353     if ( top )
1354         SetIndent(0, wxHTML_INDENT_TOP);
1355     if ( bottom )
1356         SetIndent(0, wxHTML_INDENT_BOTTOM);
1357
1358     if ( m_Cells )
1359     {
1360         wxHtmlCell *c;
1361         wxHtmlContainerCell *cont;
1362         if ( top )
1363         {
1364             for ( c = m_Cells; c; c = c->GetNext() )
1365             {
1366                 if ( c->IsTerminalCell() )
1367                 {
1368                     if ( !c->IsFormattingCell() )
1369                         break;
1370                 }
1371                 else
1372                 {
1373                     cont = (wxHtmlContainerCell*)c;
1374                     if ( IsEmptyContainer(cont) )
1375                     {
1376                         cont->SetIndent(0, wxHTML_INDENT_VERTICAL);
1377                     }
1378                     else
1379                     {
1380                         cont->RemoveExtraSpacing(true, false);
1381                         break;
1382                     }
1383                 }
1384             }
1385         }
1386
1387         if ( bottom )
1388         {
1389             wxArrayPtrVoid arr;
1390             for ( c = m_Cells; c; c = c->GetNext() )
1391                 arr.Add((void*)c);
1392
1393             for ( int i = arr.GetCount() - 1; i >= 0; i--)
1394             {
1395                 c = (wxHtmlCell*)arr[i];
1396                 if ( c->IsTerminalCell() )
1397                 {
1398                     if ( !c->IsFormattingCell() )
1399                         break;
1400                 }
1401                 else
1402                 {
1403                     cont = (wxHtmlContainerCell*)c;
1404                     if ( IsEmptyContainer(cont) )
1405                     {
1406                         cont->SetIndent(0, wxHTML_INDENT_VERTICAL);
1407                     }
1408                     else
1409                     {
1410                         cont->RemoveExtraSpacing(false, true);
1411                         break;
1412                     }
1413                 }
1414             }
1415         }
1416     }
1417 }
1418
1419
1420
1421
1422 // --------------------------------------------------------------------------
1423 // wxHtmlColourCell
1424 // --------------------------------------------------------------------------
1425
1426 IMPLEMENT_ABSTRACT_CLASS(wxHtmlColourCell, wxHtmlCell)
1427
1428 void wxHtmlColourCell::Draw(wxDC& dc,
1429                             int x, int y,
1430                             int WXUNUSED(view_y1), int WXUNUSED(view_y2),
1431                             wxHtmlRenderingInfo& info)
1432 {
1433     DrawInvisible(dc, x, y, info);
1434 }
1435
1436 void wxHtmlColourCell::DrawInvisible(wxDC& dc,
1437                                      int WXUNUSED(x), int WXUNUSED(y),
1438                                      wxHtmlRenderingInfo& info)
1439 {
1440     wxHtmlRenderingState& state = info.GetState();
1441     if (m_Flags & wxHTML_CLR_FOREGROUND)
1442     {
1443         state.SetFgColour(m_Colour);
1444         if (state.GetSelectionState() != wxHTML_SEL_IN)
1445             dc.SetTextForeground(m_Colour);
1446         else
1447             dc.SetTextForeground(
1448                     info.GetStyle().GetSelectedTextColour(m_Colour));
1449     }
1450     if (m_Flags & wxHTML_CLR_BACKGROUND)
1451     {
1452         state.SetBgColour(m_Colour);
1453         if (state.GetSelectionState() != wxHTML_SEL_IN)
1454         {
1455             dc.SetTextBackground(m_Colour);
1456             dc.SetBackground(wxBrush(m_Colour, wxBRUSHSTYLE_SOLID));
1457         }
1458         else
1459         {
1460             wxColour c = info.GetStyle().GetSelectedTextBgColour(m_Colour);
1461             dc.SetTextBackground(c);
1462             dc.SetBackground(wxBrush(c, wxBRUSHSTYLE_SOLID));
1463         }
1464     }
1465 }
1466
1467
1468
1469
1470 // ---------------------------------------------------------------------------
1471 // wxHtmlFontCell
1472 // ---------------------------------------------------------------------------
1473
1474 IMPLEMENT_ABSTRACT_CLASS(wxHtmlFontCell, wxHtmlCell)
1475
1476 void wxHtmlFontCell::Draw(wxDC& dc,
1477                           int WXUNUSED(x), int WXUNUSED(y),
1478                           int WXUNUSED(view_y1), int WXUNUSED(view_y2),
1479                           wxHtmlRenderingInfo& WXUNUSED(info))
1480 {
1481     dc.SetFont(m_Font);
1482 }
1483
1484 void wxHtmlFontCell::DrawInvisible(wxDC& dc, int WXUNUSED(x), int WXUNUSED(y),
1485                                    wxHtmlRenderingInfo& WXUNUSED(info))
1486 {
1487     dc.SetFont(m_Font);
1488 }
1489
1490
1491
1492
1493
1494
1495
1496
1497 // ---------------------------------------------------------------------------
1498 // wxHtmlWidgetCell
1499 // ---------------------------------------------------------------------------
1500
1501 IMPLEMENT_ABSTRACT_CLASS(wxHtmlWidgetCell, wxHtmlCell)
1502
1503 wxHtmlWidgetCell::wxHtmlWidgetCell(wxWindow *wnd, int w)
1504 {
1505     int sx, sy;
1506     m_Wnd = wnd;
1507     m_Wnd->GetSize(&sx, &sy);
1508     m_Width = sx, m_Height = sy;
1509     m_WidthFloat = w;
1510 }
1511
1512
1513 void wxHtmlWidgetCell::Draw(wxDC& WXUNUSED(dc),
1514                             int WXUNUSED(x), int WXUNUSED(y),
1515                             int WXUNUSED(view_y1), int WXUNUSED(view_y2),
1516                             wxHtmlRenderingInfo& WXUNUSED(info))
1517 {
1518     int absx = 0, absy = 0, stx, sty;
1519     wxHtmlCell *c = this;
1520
1521     while (c)
1522     {
1523         absx += c->GetPosX();
1524         absy += c->GetPosY();
1525         c = c->GetParent();
1526     }
1527
1528     wxScrolledWindow *scrolwin =
1529         wxDynamicCast(m_Wnd->GetParent(), wxScrolledWindow);
1530     wxCHECK_RET( scrolwin,
1531                  _T("widget cells can only be placed in wxHtmlWindow") );
1532
1533     scrolwin->GetViewStart(&stx, &sty);
1534     m_Wnd->SetSize(absx - wxHTML_SCROLL_STEP * stx,
1535                    absy  - wxHTML_SCROLL_STEP * sty,
1536                    m_Width, m_Height);
1537 }
1538
1539
1540
1541 void wxHtmlWidgetCell::DrawInvisible(wxDC& WXUNUSED(dc),
1542                                      int WXUNUSED(x), int WXUNUSED(y),
1543                                      wxHtmlRenderingInfo& WXUNUSED(info))
1544 {
1545     int absx = 0, absy = 0, stx, sty;
1546     wxHtmlCell *c = this;
1547
1548     while (c)
1549     {
1550         absx += c->GetPosX();
1551         absy += c->GetPosY();
1552         c = c->GetParent();
1553     }
1554
1555     ((wxScrolledWindow*)(m_Wnd->GetParent()))->GetViewStart(&stx, &sty);
1556     m_Wnd->SetSize(absx - wxHTML_SCROLL_STEP * stx, absy  - wxHTML_SCROLL_STEP * sty, m_Width, m_Height);
1557 }
1558
1559
1560
1561 void wxHtmlWidgetCell::Layout(int w)
1562 {
1563     if (m_WidthFloat != 0)
1564     {
1565         m_Width = (w * m_WidthFloat) / 100;
1566         m_Wnd->SetSize(m_Width, m_Height);
1567     }
1568
1569     wxHtmlCell::Layout(w);
1570 }
1571
1572
1573
1574 // ----------------------------------------------------------------------------
1575 // wxHtmlTerminalCellsInterator
1576 // ----------------------------------------------------------------------------
1577
1578 const wxHtmlCell* wxHtmlTerminalCellsInterator::operator++()
1579 {
1580     if ( !m_pos )
1581         return NULL;
1582
1583     do
1584     {
1585         if ( m_pos == m_to )
1586         {
1587             m_pos = NULL;
1588             return NULL;
1589         }
1590
1591         if ( m_pos->GetNext() )
1592             m_pos = m_pos->GetNext();
1593         else
1594         {
1595             // we must go up the hierarchy until we reach container where this
1596             // is not the last child, and then go down to first terminal cell:
1597             while ( m_pos->GetNext() == NULL )
1598             {
1599                 m_pos = m_pos->GetParent();
1600                 if ( !m_pos )
1601                     return NULL;
1602             }
1603             m_pos = m_pos->GetNext();
1604         }
1605         while ( m_pos->GetFirstChild() != NULL )
1606             m_pos = m_pos->GetFirstChild();
1607     } while ( !m_pos->IsTerminalCell() );
1608
1609     return m_pos;
1610 }
1611
1612 #endif