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, wxT("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, wxT("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     //     overridden GetCursor() continues to work. The trick is that the base
 205     //     wxHtmlCell::GetCursor() method simply returns wxNullCursor, so we
 206     //     know that GetCursor() was overridden iff it returns valid cursor.
 207     wxCursor cur = GetCursor();
 208     if (cur.IsOk())
 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
 224 wxHtmlCell::AdjustPagebreak(int *pagebreak,
 225                             const wxArrayInt& WXUNUSED(known_pagebreaks),
 226                             int pageHeight) const
 227 {
 228     // Notice that we always break the cells bigger than the page height here
 229     // as otherwise we wouldn't be able to break them at all.
 230     if ( m_Height <= pageHeight &&
 231             (!m_CanLiveOnPagebreak &&
 232                 m_PosY < *pagebreak && m_PosY + m_Height > *pagebreak) )
 233     {
 234         *pagebreak = m_PosY;
 235         return true;
 236     }
 237
 238     return false;
 239 }
 240
 241
 242
 243 void wxHtmlCell::SetLink(const wxHtmlLinkInfo& link)
 244 {
 245     wxDELETE(m_Link);
 246     if (link.GetHref() != wxEmptyString)
 247         m_Link = new wxHtmlLinkInfo(link);
 248 }
 249
 250
 251 void wxHtmlCell::Layout(int WXUNUSED(w))
 252 {
 253     SetPos(0, 0);
 254 }
 255
 256
 257
 258 const wxHtmlCell* wxHtmlCell::Find(int WXUNUSED(condition), const void* WXUNUSED(param)) const
 259 {
 260     return NULL;
 261 }
 262
 263
 264 wxHtmlCell *wxHtmlCell::FindCellByPos(wxCoord x, wxCoord y,
 265                                       unsigned flags) const
 266 {
 267     if ( x >= 0 && x < m_Width && y >= 0 && y < m_Height )
 268     {
 269         return wxConstCast(this, wxHtmlCell);
 270     }
 271     else
 272     {
 273         if ((flags & wxHTML_FIND_NEAREST_AFTER) &&
 274                 (y < 0 || (y < 0+m_Height && x < 0+m_Width)))
 275             return wxConstCast(this, wxHtmlCell);
 276         else if ((flags & wxHTML_FIND_NEAREST_BEFORE) &&
 277                 (y >= 0+m_Height || (y >= 0 && x >= 0)))
 278             return wxConstCast(this, wxHtmlCell);
 279         else
 280             return NULL;
 281     }
 282 }
 283
 284
 285 wxPoint wxHtmlCell::GetAbsPos(wxHtmlCell *rootCell) const
 286 {
 287     wxPoint p(m_PosX, m_PosY);
 288     for (wxHtmlCell *parent = m_Parent; parent && parent != rootCell;
 289          parent = parent->m_Parent)
 290     {
 291         p.x += parent->m_PosX;
 292         p.y += parent->m_PosY;
 293     }
 294     return p;
 295 }
 296
 297 wxHtmlCell *wxHtmlCell::GetRootCell() const
 298 {
 299     wxHtmlCell *c = wxConstCast(this, wxHtmlCell);
 300     while ( c->m_Parent )
 301         c = c->m_Parent;
 302     return c;
 303 }
 304
 305 unsigned wxHtmlCell::GetDepth() const
 306 {
 307     unsigned d = 0;
 308     for (wxHtmlCell *p = m_Parent; p; p = p->m_Parent)
 309         d++;
 310     return d;
 311 }
 312
 313 bool wxHtmlCell::IsBefore(wxHtmlCell *cell) const
 314 {
 315     const wxHtmlCell *c1 = this;
 316     const wxHtmlCell *c2 = cell;
 317     unsigned d1 = GetDepth();
 318     unsigned d2 = cell->GetDepth();
 319
 320     if ( d1 > d2 )
 321         for (; d1 != d2; d1-- )
 322             c1 = c1->m_Parent;
 323     else if ( d1 < d2 )
 324         for (; d1 != d2; d2-- )
 325             c2 = c2->m_Parent;
 326
 327     if ( cell == this )
 328         return true;
 329
 330     while ( c1 && c2 )
 331     {
 332         if ( c1->m_Parent == c2->m_Parent )
 333         {
 334             while ( c1 )
 335             {
 336                 if ( c1 == c2 )
 337                     return true;
 338                 c1 = c1->GetNext();
 339             }
 340             return false;
 341         }
 342         else
 343         {
 344             c1 = c1->m_Parent;
 345             c2 = c2->m_Parent;
 346         }
 347     }
 348
 349     wxFAIL_MSG(wxT("Cells are in different trees"));
 350     return false;
 351 }
 352
 353
 354 //-----------------------------------------------------------------------------
 355 // wxHtmlWordCell
 356 //-----------------------------------------------------------------------------
 357
 358 IMPLEMENT_ABSTRACT_CLASS(wxHtmlWordCell, wxHtmlCell)
 359
 360 wxHtmlWordCell::wxHtmlWordCell(const wxString& word, const wxDC& dc) : wxHtmlCell()
 361 {
 362     m_Word = word;
 363     wxCoord w, h, d;
 364     dc.GetTextExtent(m_Word, &w, &h, &d);
 365     m_Width = w;
 366     m_Height = h;
 367     m_Descent = d;
 368     SetCanLiveOnPagebreak(false);
 369     m_allowLinebreak = true;
 370 }
 371
 372 void wxHtmlWordCell::SetPreviousWord(wxHtmlWordCell *cell)
 373 {
 374     if ( cell && m_Parent == cell->m_Parent &&
 375          !wxIsspace(cell->m_Word.Last()) && !wxIsspace(m_Word[0u]) )
 376     {
 377         m_allowLinebreak = false;
 378     }
 379 }
 380
 381 // Splits m_Word into up to three parts according to selection, returns
 382 // substring before, in and after selection and the points (in relative coords)
 383 // where s2 and s3 start:
 384 void wxHtmlWordCell::Split(const wxDC& dc,
 385                            const wxPoint& selFrom, const wxPoint& selTo,
 386                            unsigned& pos1, unsigned& pos2) const
 387 {
 388     wxPoint pt1 = (selFrom == wxDefaultPosition) ?
 389                    wxDefaultPosition : selFrom - GetAbsPos();
 390     wxPoint pt2 = (selTo == wxDefaultPosition) ?
 391                    wxPoint(m_Width, wxDefaultCoord) : selTo - GetAbsPos();
 392
 393     // if the selection is entirely within this cell, make sure pt1 < pt2 in
 394     // order to make the rest of this function simpler:
 395     if ( selFrom != wxDefaultPosition && selTo != wxDefaultPosition &&
 396          selFrom.x > selTo.x )
 397     {
 398         wxPoint tmp = pt1;
 399         pt1 = pt2;
 400         pt2 = tmp;
 401     }
 402
 403     unsigned len = m_Word.length();
 404     unsigned i = 0;
 405     pos1 = 0;
 406
 407     // adjust for cases when the start/end position is completely
 408     // outside the cell:
 409     if ( pt1.y < 0 )
 410         pt1.x = 0;
 411     if ( pt2.y >= m_Height )
 412         pt2.x = m_Width;
 413
 414     // before selection:
 415     // (include character under caret only if in first half of width)
 416 #ifdef __WXMAC__
 417     // implementation using PartialExtents to support fractional widths
 418     wxArrayInt widths ;
 419     dc.GetPartialTextExtents(m_Word,widths) ;
 420     while( i < len && pt1.x >= widths[i] )
 421         i++ ;
 422     if ( i < len )
 423     {
 424         int charW = (i > 0) ? widths[i] - widths[i-1] : widths[i];
 425         if ( widths[i] - pt1.x < charW/2 )
 426             i++;
 427     }
 428 #else // !__WXMAC__
 429     wxCoord charW, charH;
 430     while ( pt1.x > 0 && i < len )
 431     {
 432         dc.GetTextExtent(m_Word[i], &charW, &charH);
 433         pt1.x -= charW;
 434         if ( pt1.x >= -charW/2 )
 435         {
 436             pos1 += charW;
 437             i++;
 438         }
 439     }
 440 #endif // __WXMAC__/!__WXMAC__
 441
 442     // in selection:
 443     // (include character under caret only if in first half of width)
 444     unsigned j = i;
 445 #ifdef __WXMAC__
 446     while( j < len && pt2.x >= widths[j] )
 447         j++ ;
 448     if ( j < len )
 449     {
 450         int charW = (j > 0) ? widths[j] - widths[j-1] : widths[j];
 451         if ( widths[j] - pt2.x < charW/2 )
 452             j++;
 453     }
 454 #else // !__WXMAC__
 455     pos2 = pos1;
 456     pt2.x -= pos2;
 457     while ( pt2.x > 0 && j < len )
 458     {
 459         dc.GetTextExtent(m_Word[j], &charW, &charH);
 460         pt2.x -= charW;
 461         if ( pt2.x >= -charW/2 )
 462         {
 463             pos2 += charW;
 464             j++;
 465         }
 466     }
 467 #endif // __WXMAC__/!__WXMAC__
 468
 469     pos1 = i;
 470     pos2 = j;
 471
 472     wxASSERT( pos2 >= pos1 );
 473 }
 474
 475 void wxHtmlWordCell::SetSelectionPrivPos(const wxDC& dc, wxHtmlSelection *s) const
 476 {
 477     unsigned p1, p2;
 478
 479     Split(dc,
 480           this == s->GetFromCell() ? s->GetFromPos() : wxDefaultPosition,
 481           this == s->GetToCell() ? s->GetToPos() : wxDefaultPosition,
 482           p1, p2);
 483
 484     if ( this == s->GetFromCell() )
 485         s->SetFromCharacterPos (p1); // selection starts here
 486     if ( this == s->GetToCell() )
 487         s->SetToCharacterPos (p2); // selection ends here
 488 }
 489
 490
 491 static void SwitchSelState(wxDC& dc, wxHtmlRenderingInfo& info,
 492                            bool toSelection)
 493 {
 494     wxColour fg = info.GetState().GetFgColour();
 495     wxColour bg = info.GetState().GetBgColour();
 496
 497     if ( toSelection )
 498     {
 499         dc.SetBackgroundMode(wxSOLID);
 500         dc.SetTextForeground(info.GetStyle().GetSelectedTextColour(fg));
 501         dc.SetTextBackground(info.GetStyle().GetSelectedTextBgColour(bg));
 502         dc.SetBackground(wxBrush(info.GetStyle().GetSelectedTextBgColour(bg),
 503                                  wxBRUSHSTYLE_SOLID));
 504     }
 505     else
 506     {
 507         const int mode = info.GetState().GetBgMode();
 508         dc.SetBackgroundMode(mode);
 509         dc.SetTextForeground(fg);
 510         dc.SetTextBackground(bg);
 511         if ( mode != wxTRANSPARENT )
 512             dc.SetBackground(wxBrush(bg, mode));
 513     }
 514 }
 515
 516
 517 void wxHtmlWordCell::Draw(wxDC& dc, int x, int y,
 518                           int WXUNUSED(view_y1), int WXUNUSED(view_y2),
 519                           wxHtmlRenderingInfo& info)
 520 {
 521 #if 0 // useful for debugging
 522     dc.SetPen(*wxBLACK_PEN);
 523     dc.DrawRectangle(x+m_PosX,y+m_PosY,m_Width /* VZ: +1? */ ,m_Height);
 524 #endif
 525
 526     bool drawSelectionAfterCell = false;
 527
 528     if ( info.GetState().GetSelectionState() == wxHTML_SEL_CHANGING )
 529     {
 530         // Selection changing, we must draw the word piecewise:
 531         wxHtmlSelection *s = info.GetSelection();
 532         wxString txt;
 533         int w, h;
 534         int ofs = 0;
 535
 536         // NB: this is quite a hack: in order to compute selection boundaries
 537         //     (in word's characters) we must know current font, which is only
 538         //     possible inside rendering code. Therefore we update the
 539         //     information here and store it in wxHtmlSelection so that
 540         //     ConvertToText can use it later:
 541         if ( !s->AreFromToCharacterPosSet () )
 542         {
 543             SetSelectionPrivPos(dc, s);
 544         }
 545
 546         int part1 = s->GetFromCell()==this ? s->GetFromCharacterPos() : 0;
 547         int part2 = s->GetToCell()==this   ? s->GetToCharacterPos()   : m_Word.Length();
 548
 549         if ( part1 > 0 )
 550         {
 551             txt = m_Word.Mid(0, part1);
 552             dc.DrawText(txt, x + m_PosX, y + m_PosY);
 553             dc.GetTextExtent(txt, &w, &h);
 554             ofs += w;
 555         }
 556
 557         SwitchSelState(dc, info, true);
 558
 559         txt = m_Word.Mid(part1, part2-part1);
 560         dc.DrawText(txt, ofs + x + m_PosX, y + m_PosY);
 561
 562         if ( (size_t)part2 < m_Word.length() )
 563         {
 564             dc.GetTextExtent(txt, &w, &h);
 565             ofs += w;
 566             SwitchSelState(dc, info, false);
 567             txt = m_Word.Mid(part2);
 568             dc.DrawText(txt, ofs + x + m_PosX, y + m_PosY);
 569         }
 570         else
 571             drawSelectionAfterCell = true;
 572     }
 573     else
 574     {
 575         wxHtmlSelectionState selstate = info.GetState().GetSelectionState();
 576         // Not changing selection state, draw the word in single mode:
 577         SwitchSelState(dc, info, selstate != wxHTML_SEL_OUT);
 578         dc.DrawText(m_Word, x + m_PosX, y + m_PosY);
 579         drawSelectionAfterCell = (selstate != wxHTML_SEL_OUT);
 580     }
 581
 582     // NB: If the text is justified then there is usually some free space
 583     //     between adjacent cells and drawing the selection only onto cells
 584     //     would result in ugly unselected spaces. The code below detects
 585     //     this special case and renders the selection *outside* the sell,
 586     //     too.
 587     if ( m_Parent->GetAlignHor() == wxHTML_ALIGN_JUSTIFY &&
 588          drawSelectionAfterCell )
 589     {
 590         wxHtmlCell *nextCell = m_Next;
 591         while ( nextCell && nextCell->IsFormattingCell() )
 592             nextCell = nextCell->GetNext();
 593         if ( nextCell )
 594         {
 595             int nextX = nextCell->GetPosX();
 596             if ( m_PosX + m_Width < nextX )
 597             {
 598                 dc.SetBrush(dc.GetBackground());
 599                 dc.SetPen(*wxTRANSPARENT_PEN);
 600                 dc.DrawRectangle(x + m_PosX + m_Width, y + m_PosY,
 601                                  nextX - m_PosX - m_Width, m_Height);
 602             }
 603         }
 604     }
 605 }
 606
 607 wxCursor wxHtmlWordCell::GetMouseCursor(wxHtmlWindowInterface *window) const
 608 {
 609     if ( !GetLink() )
 610     {
 611         return window->GetHTMLCursor(wxHtmlWindowInterface::HTMLCursor_Text);
 612     }
 613     else
 614     {
 615         return wxHtmlCell::GetMouseCursor(window);
 616     }
 617 }
 618
 619 wxString wxHtmlWordCell::ConvertToText(wxHtmlSelection *s) const
 620 {
 621     if ( s && (this == s->GetFromCell() || this == s->GetToCell()) )
 622     {
 623         // VZ: we may be called before we had a chance to re-render ourselves
 624         //     and in this case GetFrom/ToPrivPos() is not set yet -- assume
 625         //     that this only happens in case of a double/triple click (which
 626         //     seems to be the case now) and so it makes sense to select the
 627         //     entire contents of the cell in this case
 628         //
 629         // TODO: but this really needs to be fixed in some better way later...
 630         if ( s->AreFromToCharacterPosSet() )
 631         {
 632             const int part1 = s->GetFromCell()==this ? s->GetFromCharacterPos() : 0;
 633             const int part2 = s->GetToCell()==this   ? s->GetToCharacterPos()   : m_Word.Length();
 634             if ( part1 == part2 )
 635                 return wxEmptyString;
 636             return GetPartAsText(part1, part2);
 637         }
 638         //else: return the whole word below
 639     }
 640
 641     return GetAllAsText();
 642 }
 643
 644 wxString wxHtmlWordWithTabsCell::GetAllAsText() const
 645 {
 646     return m_wordOrig;
 647 }
 648
 649 wxString wxHtmlWordWithTabsCell::GetPartAsText(int begin, int end) const
 650 {
 651     // NB: The 'begin' and 'end' positions are in the _displayed_ text
 652     //     (stored in m_Word) and not in the text with tabs that should
 653     //     be copied to clipboard (m_wordOrig).
 654     //
 655     // NB: Because selection is performed on displayed text, it's possible
 656     //     to select e.g. "half of TAB character" -- IOW, 'begin' and 'end'
 657     //     may be in the middle of TAB character expansion into ' 's. In this
 658     //     case, we copy the TAB character to clipboard once.
 659
 660     wxASSERT( begin < end );
 661
 662     const unsigned SPACES_PER_TAB = 8;
 663
 664     wxString sel;
 665
 666     int pos = 0;
 667     wxString::const_iterator i = m_wordOrig.begin();
 668
 669     // find the beginning of text to copy:
 670     for ( ; pos < begin; ++i )
 671     {
 672         if ( *i == '\t' )
 673         {
 674             pos += 8 - (m_linepos + pos) % SPACES_PER_TAB;
 675             if ( pos >= begin )
 676             {
 677                 sel += '\t';
 678             }
 679         }
 680         else
 681         {
 682             ++pos;
 683         }
 684     }
 685
 686     // copy the content until we reach 'end':
 687     for ( ; pos < end; ++i )
 688     {
 689         const wxChar c = *i;
 690         sel += c;
 691
 692         if ( c == '\t' )
 693             pos += 8 - (m_linepos + pos) % SPACES_PER_TAB;
 694         else
 695             ++pos;
 696     }
 697
 698     return sel;
 699 }
 700
 701
 702
 703 //-----------------------------------------------------------------------------
 704 // wxHtmlContainerCell
 705 //-----------------------------------------------------------------------------
 706
 707 IMPLEMENT_ABSTRACT_CLASS(wxHtmlContainerCell, wxHtmlCell)
 708
 709 wxHtmlContainerCell::wxHtmlContainerCell(wxHtmlContainerCell *parent) : wxHtmlCell()
 710 {
 711     m_Cells = m_LastCell = NULL;
 712     m_Parent = parent;
 713     m_MaxTotalWidth = 0;
 714     if (m_Parent) m_Parent->InsertCell(this);
 715     m_AlignHor = wxHTML_ALIGN_LEFT;
 716     m_AlignVer = wxHTML_ALIGN_BOTTOM;
 717     m_IndentLeft = m_IndentRight = m_IndentTop = m_IndentBottom = 0;
 718     m_WidthFloat = 100; m_WidthFloatUnits = wxHTML_UNITS_PERCENT;
 719     m_BkColour = wxNullColour;
 720     m_Border = 0;
 721     m_MinHeight = 0;
 722     m_MinHeightAlign = wxHTML_ALIGN_TOP;
 723     m_LastLayout = -1;
 724 }
 725
 726 wxHtmlContainerCell::~wxHtmlContainerCell()
 727 {
 728     wxHtmlCell *cell = m_Cells;
 729     while ( cell )
 730     {
 731         wxHtmlCell *cellNext = cell->GetNext();
 732         delete cell;
 733         cell = cellNext;
 734     }
 735 }
 736
 737
 738
 739 void wxHtmlContainerCell::SetIndent(int i, int what, int units)
 740 {
 741     int val = (units == wxHTML_UNITS_PIXELS) ? i : -i;
 742     if (what & wxHTML_INDENT_LEFT) m_IndentLeft = val;
 743     if (what & wxHTML_INDENT_RIGHT) m_IndentRight = val;
 744     if (what & wxHTML_INDENT_TOP) m_IndentTop = val;
 745     if (what & wxHTML_INDENT_BOTTOM) m_IndentBottom = val;
 746     m_LastLayout = -1;
 747 }
 748
 749
 750
 751 int wxHtmlContainerCell::GetIndent(int ind) const
 752 {
 753     if (ind & wxHTML_INDENT_LEFT) return m_IndentLeft;
 754     else if (ind & wxHTML_INDENT_RIGHT) return m_IndentRight;
 755     else if (ind & wxHTML_INDENT_TOP) return m_IndentTop;
 756     else if (ind & wxHTML_INDENT_BOTTOM) return m_IndentBottom;
 757     else return -1; /* BUG! Should not be called... */
 758 }
 759
 760
 761
 762
 763 int wxHtmlContainerCell::GetIndentUnits(int ind) const
 764 {
 765     bool p = false;
 766     if (ind & wxHTML_INDENT_LEFT) p = m_IndentLeft < 0;
 767     else if (ind & wxHTML_INDENT_RIGHT) p = m_IndentRight < 0;
 768     else if (ind & wxHTML_INDENT_TOP) p = m_IndentTop < 0;
 769     else if (ind & wxHTML_INDENT_BOTTOM) p = m_IndentBottom < 0;
 770     if (p) return wxHTML_UNITS_PERCENT;
 771     else return wxHTML_UNITS_PIXELS;
 772 }
 773
 774
 775 bool
 776 wxHtmlContainerCell::AdjustPagebreak(int *pagebreak,
 777                                      const wxArrayInt& known_pagebreaks,
 778                                      int pageHeight) const
 779 {
 780     if (!m_CanLiveOnPagebreak)
 781         return wxHtmlCell::AdjustPagebreak(pagebreak, known_pagebreaks, pageHeight);
 782
 783     wxHtmlCell *c = GetFirstChild();
 784     bool rt = false;
 785     int pbrk = *pagebreak - m_PosY;
 786
 787     while (c)
 788     {
 789         if (c->AdjustPagebreak(&pbrk, known_pagebreaks, pageHeight))
 790             rt = true;
 791         c = c->GetNext();
 792     }
 793     if (rt)
 794         *pagebreak = pbrk + m_PosY;
 795     return rt;
 796 }
 797
 798
 799 void wxHtmlContainerCell::Layout(int w)
 800 {
 801     wxHtmlCell::Layout(w);
 802
 803     if (m_LastLayout == w)
 804         return;
 805     m_LastLayout = w;
 806
 807     // VS: Any attempt to layout with negative or zero width leads to hell,
 808     // but we can't ignore such attempts completely, since it sometimes
 809     // happen (e.g. when trying how small a table can be). The best thing we
 810     // can do is to set the width of child cells to zero
 811     if (w < 1)
 812     {
 813        m_Width = 0;
 814        for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
 815             cell->Layout(0);
 816             // this does two things: it recursively calls this code on all
 817             // child contrainers and resets children's position to (0,0)
 818        return;
 819     }
 820
 821     wxHtmlCell *nextCell;
 822     long xpos = 0, ypos = m_IndentTop;
 823     int xdelta = 0, ybasicpos = 0, ydiff;
 824     int s_width, nextWordWidth, s_indent;
 825     int ysizeup = 0, ysizedown = 0;
 826     int MaxLineWidth = 0;
 827     int curLineWidth = 0;
 828     m_MaxTotalWidth = 0;
 829
 830
 831     /*
 832
 833     WIDTH ADJUSTING :
 834
 835     */
 836
 837     if (m_WidthFloatUnits == wxHTML_UNITS_PERCENT)
 838     {
 839         if (m_WidthFloat < 0) m_Width = (100 + m_WidthFloat) * w / 100;
 840         else m_Width = m_WidthFloat * w / 100;
 841     }
 842     else
 843     {
 844         if (m_WidthFloat < 0) m_Width = w + m_WidthFloat;
 845         else m_Width = m_WidthFloat;
 846     }
 847
 848     if (m_Cells)
 849     {
 850         int l = (m_IndentLeft < 0) ? (-m_IndentLeft * m_Width / 100) : m_IndentLeft;
 851         int r = (m_IndentRight < 0) ? (-m_IndentRight * m_Width / 100) : m_IndentRight;
 852         for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
 853             cell->Layout(m_Width - (l + r));
 854     }
 855
 856     /*
 857
 858     LAYOUT :
 859
 860     */
 861
 862     // adjust indentation:
 863     s_indent = (m_IndentLeft < 0) ? (-m_IndentLeft * m_Width / 100) : m_IndentLeft;
 864     s_width = m_Width - s_indent - ((m_IndentRight < 0) ? (-m_IndentRight * m_Width / 100) : m_IndentRight);
 865
 866     // my own layout:
 867     wxHtmlCell *cell = m_Cells,
 868                *line = m_Cells;
 869     while (cell != NULL)
 870     {
 871         switch (m_AlignVer)
 872         {
 873             case wxHTML_ALIGN_TOP :      ybasicpos = 0; break;
 874             case wxHTML_ALIGN_BOTTOM :   ybasicpos = - cell->GetHeight(); break;
 875             case wxHTML_ALIGN_CENTER :   ybasicpos = - cell->GetHeight() / 2; break;
 876         }
 877         ydiff = cell->GetHeight() + ybasicpos;
 878
 879         if (cell->GetDescent() + ydiff > ysizedown) ysizedown = cell->GetDescent() + ydiff;
 880         if (ybasicpos + cell->GetDescent() < -ysizeup) ysizeup = - (ybasicpos + cell->GetDescent());
 881
 882         // layout nonbreakable run of cells:
 883         cell->SetPos(xpos, ybasicpos + cell->GetDescent());
 884         xpos += cell->GetWidth();
 885         if (!cell->IsTerminalCell())
 886         {
 887             // Container cell indicates new line
 888             if (curLineWidth > m_MaxTotalWidth)
 889                 m_MaxTotalWidth = curLineWidth;
 890
 891             if (wxMax(cell->GetWidth(), cell->GetMaxTotalWidth()) > m_MaxTotalWidth)
 892                 m_MaxTotalWidth = cell->GetMaxTotalWidth();
 893             curLineWidth = 0;
 894         }
 895         else
 896             // Normal cell, add maximum cell width to line width
 897             curLineWidth += cell->GetMaxTotalWidth();
 898
 899         cell = cell->GetNext();
 900
 901         // compute length of the next word that would be added:
 902         nextWordWidth = 0;
 903         if (cell)
 904         {
 905             nextCell = cell;
 906             do
 907             {
 908                 nextWordWidth += nextCell->GetWidth();
 909                 nextCell = nextCell->GetNext();
 910             } while (nextCell && !nextCell->IsLinebreakAllowed());
 911         }
 912
 913         // force new line if occurred:
 914         if ((cell == NULL) ||
 915             (xpos + nextWordWidth > s_width && cell->IsLinebreakAllowed()))
 916         {
 917             if (xpos > MaxLineWidth) MaxLineWidth = xpos;
 918             if (ysizeup < 0) ysizeup = 0;
 919             if (ysizedown < 0) ysizedown = 0;
 920             switch (m_AlignHor) {
 921                 case wxHTML_ALIGN_LEFT :
 922                 case wxHTML_ALIGN_JUSTIFY :
 923                          xdelta = 0;
 924                          break;
 925                 case wxHTML_ALIGN_RIGHT :
 926                          xdelta = 0 + (s_width - xpos);
 927                          break;
 928                 case wxHTML_ALIGN_CENTER :
 929                          xdelta = 0 + (s_width - xpos) / 2;
 930                          break;
 931             }
 932             if (xdelta < 0) xdelta = 0;
 933             xdelta += s_indent;
 934
 935             ypos += ysizeup;
 936
 937             if (m_AlignHor != wxHTML_ALIGN_JUSTIFY || cell == NULL)
 938             {
 939                 while (line != cell)
 940                 {
 941                     line->SetPos(line->GetPosX() + xdelta,
 942                                    ypos + line->GetPosY());
 943                     line = line->GetNext();
 944                 }
 945             }
 946             else // align == justify
 947             {
 948                 // we have to distribute the extra horz space between the cells
 949                 // on this line
 950
 951                 // an added complication is that some cells have fixed size and
 952                 // shouldn't get any increment (it so happens that these cells
 953                 // also don't allow line break on them which provides with an
 954                 // easy way to test for this) -- and neither should the cells
 955                 // adjacent to them as this could result in a visible space
 956                 // between two cells separated by, e.g. font change, cell which
 957                 // is wrong
 958
 959                 int step = s_width - xpos;
 960                 if ( step > 0 )
 961                 {
 962                     // first count the cells which will get extra space
 963                     int total = -1;
 964
 965                     const wxHtmlCell *c;
 966                     if ( line != cell )
 967                     {
 968                         for ( c = line; c != cell; c = c->GetNext() )
 969                         {
 970                             if ( c->IsLinebreakAllowed() )
 971                             {
 972                                 total++;
 973                             }
 974                         }
 975                     }
 976
 977                     // and now extra space to those cells which merit it
 978                     if ( total )
 979                     {
 980                         // first visible cell on line is not moved:
 981                         while (line !=cell && !line->IsLinebreakAllowed())
 982                         {
 983                             line->SetPos(line->GetPosX() + s_indent,
 984                                          line->GetPosY() + ypos);
 985                             line = line->GetNext();
 986                         }
 987
 988                         if (line != cell)
 989                         {
 990                             line->SetPos(line->GetPosX() + s_indent,
 991                                          line->GetPosY() + ypos);
 992
 993                             line = line->GetNext();
 994                         }
 995
 996                         for ( int n = 0; line != cell; line = line->GetNext() )
 997                         {
 998                             if ( line->IsLinebreakAllowed() )
 999                             {
1000                                 // offset the next cell relative to this one
1001                                 // thus increasing our size
1002                                 n++;
1003                             }
1004
1005                             line->SetPos(line->GetPosX() + s_indent +
1006                                            ((n * step) / total),
1007                                            line->GetPosY() + ypos);
1008                         }
1009                     }
1010                     else
1011                     {
1012                         // this will cause the code to enter "else branch" below:
1013                         step = 0;
1014                     }
1015                 }
1016                 // else branch:
1017                 if ( step <= 0 ) // no extra space to distribute
1018                 {
1019                     // just set the indent properly
1020                     while (line != cell)
1021                     {
1022                         line->SetPos(line->GetPosX() + s_indent,
1023                                      line->GetPosY() + ypos);
1024                         line = line->GetNext();
1025                     }
1026                 }
1027             }
1028
1029             ypos += ysizedown;
1030             xpos = 0;
1031             ysizeup = ysizedown = 0;
1032             line = cell;
1033         }
1034     }
1035
1036     // setup height & width, depending on container layout:
1037     m_Height = ypos + (ysizedown + ysizeup) + m_IndentBottom;
1038
1039     if (m_Height < m_MinHeight)
1040     {
1041         if (m_MinHeightAlign != wxHTML_ALIGN_TOP)
1042         {
1043             int diff = m_MinHeight - m_Height;
1044             if (m_MinHeightAlign == wxHTML_ALIGN_CENTER) diff /= 2;
1045             cell = m_Cells;
1046             while (cell)
1047             {
1048                 cell->SetPos(cell->GetPosX(), cell->GetPosY() + diff);
1049                 cell = cell->GetNext();
1050             }
1051         }
1052         m_Height = m_MinHeight;
1053     }
1054
1055     if (curLineWidth > m_MaxTotalWidth)
1056         m_MaxTotalWidth = curLineWidth;
1057
1058     m_MaxTotalWidth += s_indent + ((m_IndentRight < 0) ? (-m_IndentRight * m_Width / 100) : m_IndentRight);
1059     MaxLineWidth += s_indent + ((m_IndentRight < 0) ? (-m_IndentRight * m_Width / 100) : m_IndentRight);
1060     if (m_Width < MaxLineWidth) m_Width = MaxLineWidth;
1061 }
1062
1063 void wxHtmlContainerCell::UpdateRenderingStatePre(wxHtmlRenderingInfo& info,
1064                                                   wxHtmlCell *cell) const
1065 {
1066     wxHtmlSelection *s = info.GetSelection();
1067     if (!s) return;
1068     if (s->GetFromCell() == cell || s->GetToCell() == cell)
1069     {
1070         info.GetState().SetSelectionState(wxHTML_SEL_CHANGING);
1071     }
1072 }
1073
1074 void wxHtmlContainerCell::UpdateRenderingStatePost(wxHtmlRenderingInfo& info,
1075                                                    wxHtmlCell *cell) const
1076 {
1077     wxHtmlSelection *s = info.GetSelection();
1078     if (!s) return;
1079     if (s->GetToCell() == cell)
1080         info.GetState().SetSelectionState(wxHTML_SEL_OUT);
1081     else if (s->GetFromCell() == cell)
1082         info.GetState().SetSelectionState(wxHTML_SEL_IN);
1083 }
1084
1085 #define mMin(a, b) (((a) < (b)) ? (a) : (b))
1086 #define mMax(a, b) (((a) < (b)) ? (b) : (a))
1087
1088 void wxHtmlContainerCell::Draw(wxDC& dc, int x, int y, int view_y1, int view_y2,
1089                                wxHtmlRenderingInfo& info)
1090 {
1091 #if 0 // useful for debugging
1092     dc.SetPen(*wxRED_PEN);
1093     dc.DrawRectangle(x+m_PosX,y+m_PosY,m_Width,m_Height);
1094 #endif
1095
1096     int xlocal = x + m_PosX;
1097     int ylocal = y + m_PosY;
1098
1099     if (m_BkColour.IsOk())
1100     {
1101         wxBrush myb = wxBrush(m_BkColour, wxBRUSHSTYLE_SOLID);
1102
1103         int real_y1 = mMax(ylocal, view_y1);
1104         int real_y2 = mMin(ylocal + m_Height - 1, view_y2);
1105
1106         dc.SetBrush(myb);
1107         dc.SetPen(*wxTRANSPARENT_PEN);
1108         dc.DrawRectangle(xlocal, real_y1, m_Width, real_y2 - real_y1 + 1);
1109     }
1110
1111     if (m_Border == 1)
1112     {
1113         // draw thin border using lines
1114         wxPen mypen1(m_BorderColour1, 1, wxPENSTYLE_SOLID);
1115         wxPen mypen2(m_BorderColour2, 1, wxPENSTYLE_SOLID);
1116
1117         dc.SetPen(mypen1);
1118         dc.DrawLine(xlocal, ylocal, xlocal, ylocal + m_Height - 1);
1119         dc.DrawLine(xlocal, ylocal, xlocal + m_Width, ylocal);
1120         dc.SetPen(mypen2);
1121         dc.DrawLine(xlocal + m_Width - 1, ylocal, xlocal +  m_Width - 1, ylocal + m_Height - 1);
1122         dc.DrawLine(xlocal, ylocal + m_Height - 1, xlocal + m_Width, ylocal + m_Height - 1);
1123     }
1124     else if (m_Border> 0)
1125     {
1126         wxBrush mybrush1(m_BorderColour1, wxBRUSHSTYLE_SOLID);
1127         wxBrush mybrush2(m_BorderColour2, wxBRUSHSTYLE_SOLID);
1128
1129         // draw upper left corner
1130         // 0---------------5
1131         // |              /
1132         // | 3-----------4
1133         // | |
1134         // | 2
1135         // |/
1136         // 1
1137
1138         wxPoint poly[6];
1139         poly[0].x =m_PosX; poly[0].y = m_PosY ;
1140         poly[1].x =m_PosX; poly[1].y = m_PosY + m_Height;
1141         poly[2].x =m_PosX + m_Border; poly[2].y = poly[1].y - m_Border;
1142         poly[3].x =poly[2].x ; poly[3].y = m_PosY + m_Border;
1143         poly[4].x =m_PosX + m_Width - m_Border; poly[4].y = poly[3].y;
1144         poly[5].x =m_PosX + m_Width; poly[5].y = m_PosY;
1145
1146         dc.SetBrush(mybrush1);
1147         dc.SetPen(*wxTRANSPARENT_PEN);
1148         dc.DrawPolygon(6, poly, x, y);
1149
1150         // draw lower right corner reusing point 1,2,4 and 5
1151         //                 5
1152         //                /|
1153         //               4 |
1154         //               | |
1155         //   2-----------3 |
1156         //  /              |
1157         // 1---------------0
1158         dc.SetBrush(mybrush2);
1159         poly[0].x = poly[5].x; poly[0].y = poly[1].y;
1160         poly[3].x = poly[4].x; poly[3].y = poly[2].y;
1161         dc.DrawPolygon(6, poly, x, y);
1162
1163         // smooth color transition like firefox
1164         wxColour borderMediumColour(
1165             (m_BorderColour1.Red() + m_BorderColour2.Red()) /2 ,
1166             (m_BorderColour1.Green() + m_BorderColour2.Green()) /2 ,
1167             (m_BorderColour1.Blue() + m_BorderColour2.Blue()) /2
1168             );
1169         wxPen mypen3(borderMediumColour, 1, wxPENSTYLE_SOLID);
1170         dc.SetPen(mypen3);
1171         dc.DrawLines(2, &poly[1], x, y - 1); // between 1 and 2
1172         dc.DrawLines(2, &poly[4], x, y - 1); // between 4 and 5
1173     }
1174     if (m_Cells)
1175     {
1176         // draw container's contents:
1177         for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
1178         {
1179
1180             // optimize drawing: don't render off-screen content:
1181             if ((ylocal + cell->GetPosY() <= view_y2) &&
1182                 (ylocal + cell->GetPosY() + cell->GetHeight() > view_y1))
1183             {
1184                 // the cell is visible, draw it:
1185                 UpdateRenderingStatePre(info, cell);
1186                 cell->Draw(dc,
1187                            xlocal, ylocal, view_y1, view_y2,
1188                            info);
1189                 UpdateRenderingStatePost(info, cell);
1190             }
1191             else
1192             {
1193                 // the cell is off-screen, proceed with font+color+etc.
1194                 // changes only:
1195                 cell->DrawInvisible(dc, xlocal, ylocal, info);
1196             }
1197         }
1198     }
1199 }
1200
1201
1202
1203 void wxHtmlContainerCell::DrawInvisible(wxDC& dc, int x, int y,
1204                                         wxHtmlRenderingInfo& info)
1205 {
1206     if (m_Cells)
1207     {
1208         for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
1209         {
1210             UpdateRenderingStatePre(info, cell);
1211             cell->DrawInvisible(dc, x + m_PosX, y + m_PosY, info);
1212             UpdateRenderingStatePost(info, cell);
1213         }
1214     }
1215 }
1216
1217
1218 wxColour wxHtmlContainerCell::GetBackgroundColour()
1219 {
1220     return m_BkColour;
1221 }
1222
1223
1224
1225 wxHtmlLinkInfo *wxHtmlContainerCell::GetLink(int x, int y) const
1226 {
1227     wxHtmlCell *cell = FindCellByPos(x, y);
1228
1229     // VZ: I don't know if we should pass absolute or relative coords to
1230     //     wxHtmlCell::GetLink()? As the base class version just ignores them
1231     //     anyhow, it hardly matters right now but should still be clarified
1232     return cell ? cell->GetLink(x, y) : NULL;
1233 }
1234
1235
1236
1237 void wxHtmlContainerCell::InsertCell(wxHtmlCell *f)
1238 {
1239     if (!m_Cells) m_Cells = m_LastCell = f;
1240     else
1241     {
1242         m_LastCell->SetNext(f);
1243         m_LastCell = f;
1244         if (m_LastCell) while (m_LastCell->GetNext()) m_LastCell = m_LastCell->GetNext();
1245     }
1246     f->SetParent(this);
1247     m_LastLayout = -1;
1248 }
1249
1250
1251
1252 void wxHtmlContainerCell::SetAlign(const wxHtmlTag& tag)
1253 {
1254     if (tag.HasParam(wxT("ALIGN")))
1255     {
1256         wxString alg = tag.GetParam(wxT("ALIGN"));
1257         alg.MakeUpper();
1258         if (alg == wxT("CENTER"))
1259             SetAlignHor(wxHTML_ALIGN_CENTER);
1260         else if (alg == wxT("LEFT"))
1261             SetAlignHor(wxHTML_ALIGN_LEFT);
1262         else if (alg == wxT("JUSTIFY"))
1263             SetAlignHor(wxHTML_ALIGN_JUSTIFY);
1264         else if (alg == wxT("RIGHT"))
1265             SetAlignHor(wxHTML_ALIGN_RIGHT);
1266         m_LastLayout = -1;
1267     }
1268 }
1269
1270
1271
1272 void wxHtmlContainerCell::SetWidthFloat(const wxHtmlTag& tag, double pixel_scale)
1273 {
1274     if (tag.HasParam(wxT("WIDTH")))
1275     {
1276         int wdi;
1277         wxString wd = tag.GetParam(wxT("WIDTH"));
1278
1279         if (wd[wd.length()-1] == wxT('%'))
1280         {
1281             wxSscanf(wd.c_str(), wxT("%i%%"), &wdi);
1282             SetWidthFloat(wdi, wxHTML_UNITS_PERCENT);
1283         }
1284         else
1285         {
1286             wxSscanf(wd.c_str(), wxT("%i"), &wdi);
1287             SetWidthFloat((int)(pixel_scale * (double)wdi), wxHTML_UNITS_PIXELS);
1288         }
1289         m_LastLayout = -1;
1290     }
1291 }
1292
1293
1294
1295 const wxHtmlCell* wxHtmlContainerCell::Find(int condition, const void* param) const
1296 {
1297     if (m_Cells)
1298     {
1299         for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
1300         {
1301             const wxHtmlCell *r = cell->Find(condition, param);
1302             if (r) return r;
1303         }
1304     }
1305     return NULL;
1306 }
1307
1308
1309 wxHtmlCell *wxHtmlContainerCell::FindCellByPos(wxCoord x, wxCoord y,
1310                                                unsigned flags) const
1311 {
1312     if ( flags & wxHTML_FIND_EXACT )
1313     {
1314         for ( const wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext() )
1315         {
1316             int cx = cell->GetPosX(),
1317                 cy = cell->GetPosY();
1318
1319             if ( (cx <= x) && (cx + cell->GetWidth() > x) &&
1320                  (cy <= y) && (cy + cell->GetHeight() > y) )
1321             {
1322                 return cell->FindCellByPos(x - cx, y - cy, flags);
1323             }
1324         }
1325     }
1326     else if ( flags & wxHTML_FIND_NEAREST_AFTER )
1327     {
1328         wxHtmlCell *c;
1329         for ( const wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext() )
1330         {
1331             if ( cell->IsFormattingCell() )
1332                 continue;
1333             int cellY = cell->GetPosY();
1334             if (!( y < cellY || (y < cellY + cell->GetHeight() &&
1335                                  x < cell->GetPosX() + cell->GetWidth()) ))
1336                 continue;
1337
1338             c = cell->FindCellByPos(x - cell->GetPosX(), y - cellY, flags);
1339             if (c) return c;
1340         }
1341     }
1342     else if ( flags & wxHTML_FIND_NEAREST_BEFORE )
1343     {
1344         wxHtmlCell *c2, *c = NULL;
1345         for ( const wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext() )
1346         {
1347             if ( cell->IsFormattingCell() )
1348                 continue;
1349             int cellY = cell->GetPosY();
1350             if (!( cellY + cell->GetHeight() <= y ||
1351                    (y >= cellY && x >= cell->GetPosX()) ))
1352                 break;
1353             c2 = cell->FindCellByPos(x - cell->GetPosX(), y - cellY, flags);
1354             if (c2)
1355                 c = c2;
1356         }
1357         if (c) return c;
1358     }
1359
1360     return NULL;
1361 }
1362
1363
1364 bool wxHtmlContainerCell::ProcessMouseClick(wxHtmlWindowInterface *window,
1365                                             const wxPoint& pos,
1366                                             const wxMouseEvent& event)
1367 {
1368 #if WXWIN_COMPATIBILITY_2_6
1369     wxHtmlCellOnMouseClickCompatHelper compat(window, pos, event);
1370     return compat.CallOnMouseClick(this);
1371 }
1372
1373 void wxHtmlContainerCell::OnMouseClick(wxWindow*,
1374                                        int, int, const wxMouseEvent& event)
1375 {
1376     wxCHECK_RET( gs_helperOnMouseClick, wxT("unexpected call to OnMouseClick") );
1377     wxHtmlWindowInterface *window = gs_helperOnMouseClick->window;
1378     const wxPoint& pos = gs_helperOnMouseClick->pos;
1379 #endif // WXWIN_COMPATIBILITY_2_6
1380
1381     bool retval = false;
1382     wxHtmlCell *cell = FindCellByPos(pos.x, pos.y);
1383     if ( cell )
1384         retval = cell->ProcessMouseClick(window, pos, event);
1385
1386 #if WXWIN_COMPATIBILITY_2_6
1387     gs_helperOnMouseClick->retval = retval;
1388 #else
1389     return retval;
1390 #endif // WXWIN_COMPATIBILITY_2_6
1391 }
1392
1393
1394 wxHtmlCell *wxHtmlContainerCell::GetFirstTerminal() const
1395 {
1396     if ( m_Cells )
1397     {
1398         wxHtmlCell *c2;
1399         for (wxHtmlCell *c = m_Cells; c; c = c->GetNext())
1400         {
1401             c2 = c->GetFirstTerminal();
1402             if ( c2 )
1403                 return c2;
1404         }
1405     }
1406     return NULL;
1407 }
1408
1409 wxHtmlCell *wxHtmlContainerCell::GetLastTerminal() const
1410 {
1411     if ( m_Cells )
1412     {
1413         // most common case first:
1414         wxHtmlCell *c = m_LastCell->GetLastTerminal();
1415         if ( c )
1416             return c;
1417
1418         wxHtmlCell *ctmp;
1419         wxHtmlCell *c2 = NULL;
1420         for (c = m_Cells; c; c = c->GetNext())
1421         {
1422             ctmp = c->GetLastTerminal();
1423             if ( ctmp )
1424                 c2 = ctmp;
1425         }
1426         return c2;
1427     }
1428     else
1429         return NULL;
1430 }
1431
1432
1433 static bool IsEmptyContainer(wxHtmlContainerCell *cell)
1434 {
1435     for ( wxHtmlCell *c = cell->GetFirstChild(); c; c = c->GetNext() )
1436     {
1437         if ( !c->IsTerminalCell() || !c->IsFormattingCell() )
1438             return false;
1439     }
1440     return true;
1441 }
1442
1443 void wxHtmlContainerCell::RemoveExtraSpacing(bool top, bool bottom)
1444 {
1445     if ( top )
1446         SetIndent(0, wxHTML_INDENT_TOP);
1447     if ( bottom )
1448         SetIndent(0, wxHTML_INDENT_BOTTOM);
1449
1450     if ( m_Cells )
1451     {
1452         wxHtmlCell *c;
1453         wxHtmlContainerCell *cont;
1454         if ( top )
1455         {
1456             for ( c = m_Cells; c; c = c->GetNext() )
1457             {
1458                 if ( c->IsTerminalCell() )
1459                 {
1460                     if ( !c->IsFormattingCell() )
1461                         break;
1462                 }
1463                 else
1464                 {
1465                     cont = (wxHtmlContainerCell*)c;
1466                     if ( IsEmptyContainer(cont) )
1467                     {
1468                         cont->SetIndent(0, wxHTML_INDENT_VERTICAL);
1469                     }
1470                     else
1471                     {
1472                         cont->RemoveExtraSpacing(true, false);
1473                         break;
1474                     }
1475                 }
1476             }
1477         }
1478
1479         if ( bottom )
1480         {
1481             wxArrayPtrVoid arr;
1482             for ( c = m_Cells; c; c = c->GetNext() )
1483                 arr.Add((void*)c);
1484
1485             for ( int i = arr.GetCount() - 1; i >= 0; i--)
1486             {
1487                 c = (wxHtmlCell*)arr[i];
1488                 if ( c->IsTerminalCell() )
1489                 {
1490                     if ( !c->IsFormattingCell() )
1491                         break;
1492                 }
1493                 else
1494                 {
1495                     cont = (wxHtmlContainerCell*)c;
1496                     if ( IsEmptyContainer(cont) )
1497                     {
1498                         cont->SetIndent(0, wxHTML_INDENT_VERTICAL);
1499                     }
1500                     else
1501                     {
1502                         cont->RemoveExtraSpacing(false, true);
1503                         break;
1504                     }
1505                 }
1506             }
1507         }
1508     }
1509 }
1510
1511
1512
1513
1514 // --------------------------------------------------------------------------
1515 // wxHtmlColourCell
1516 // --------------------------------------------------------------------------
1517
1518 IMPLEMENT_ABSTRACT_CLASS(wxHtmlColourCell, wxHtmlCell)
1519
1520 void wxHtmlColourCell::Draw(wxDC& dc,
1521                             int x, int y,
1522                             int WXUNUSED(view_y1), int WXUNUSED(view_y2),
1523                             wxHtmlRenderingInfo& info)
1524 {
1525     DrawInvisible(dc, x, y, info);
1526 }
1527
1528 void wxHtmlColourCell::DrawInvisible(wxDC& dc,
1529                                      int WXUNUSED(x), int WXUNUSED(y),
1530                                      wxHtmlRenderingInfo& info)
1531 {
1532     wxHtmlRenderingState& state = info.GetState();
1533     if (m_Flags & wxHTML_CLR_FOREGROUND)
1534     {
1535         state.SetFgColour(m_Colour);
1536         if (state.GetSelectionState() != wxHTML_SEL_IN)
1537             dc.SetTextForeground(m_Colour);
1538         else
1539             dc.SetTextForeground(
1540                     info.GetStyle().GetSelectedTextColour(m_Colour));
1541     }
1542     if (m_Flags & wxHTML_CLR_BACKGROUND)
1543     {
1544         state.SetBgColour(m_Colour);
1545         state.SetBgMode(wxSOLID);
1546         const wxColour c = state.GetSelectionState() == wxHTML_SEL_IN
1547                          ? info.GetStyle().GetSelectedTextBgColour(m_Colour)
1548                          : m_Colour;
1549         dc.SetTextBackground(c);
1550         dc.SetBackground(c);
1551         dc.SetBackgroundMode(wxSOLID);
1552     }
1553     if (m_Flags & wxHTML_CLR_TRANSPARENT_BACKGROUND)
1554     {
1555         state.SetBgColour(m_Colour);
1556         state.SetBgMode(wxTRANSPARENT);
1557         const wxColour c = state.GetSelectionState() == wxHTML_SEL_IN
1558                          ? info.GetStyle().GetSelectedTextBgColour(m_Colour)
1559                          : m_Colour;
1560         dc.SetTextBackground(c);
1561         dc.SetBackgroundMode(wxTRANSPARENT);
1562     }
1563 }
1564
1565
1566
1567
1568 // ---------------------------------------------------------------------------
1569 // wxHtmlFontCell
1570 // ---------------------------------------------------------------------------
1571
1572 IMPLEMENT_ABSTRACT_CLASS(wxHtmlFontCell, wxHtmlCell)
1573
1574 void wxHtmlFontCell::Draw(wxDC& dc,
1575                           int WXUNUSED(x), int WXUNUSED(y),
1576                           int WXUNUSED(view_y1), int WXUNUSED(view_y2),
1577                           wxHtmlRenderingInfo& WXUNUSED(info))
1578 {
1579     dc.SetFont(m_Font);
1580 }
1581
1582 void wxHtmlFontCell::DrawInvisible(wxDC& dc, int WXUNUSED(x), int WXUNUSED(y),
1583                                    wxHtmlRenderingInfo& WXUNUSED(info))
1584 {
1585     dc.SetFont(m_Font);
1586 }
1587
1588
1589
1590
1591
1592
1593
1594
1595 // ---------------------------------------------------------------------------
1596 // wxHtmlWidgetCell
1597 // ---------------------------------------------------------------------------
1598
1599 IMPLEMENT_ABSTRACT_CLASS(wxHtmlWidgetCell, wxHtmlCell)
1600
1601 wxHtmlWidgetCell::wxHtmlWidgetCell(wxWindow *wnd, int w)
1602 {
1603     int sx, sy;
1604     m_Wnd = wnd;
1605     m_Wnd->GetSize(&sx, &sy);
1606     m_Width = sx, m_Height = sy;
1607     m_WidthFloat = w;
1608 }
1609
1610
1611 void wxHtmlWidgetCell::Draw(wxDC& WXUNUSED(dc),
1612                             int WXUNUSED(x), int WXUNUSED(y),
1613                             int WXUNUSED(view_y1), int WXUNUSED(view_y2),
1614                             wxHtmlRenderingInfo& WXUNUSED(info))
1615 {
1616     int absx = 0, absy = 0, stx, sty;
1617     wxHtmlCell *c = this;
1618
1619     while (c)
1620     {
1621         absx += c->GetPosX();
1622         absy += c->GetPosY();
1623         c = c->GetParent();
1624     }
1625
1626     wxScrolledWindow *scrolwin =
1627         wxDynamicCast(m_Wnd->GetParent(), wxScrolledWindow);
1628     wxCHECK_RET( scrolwin,
1629                  wxT("widget cells can only be placed in wxHtmlWindow") );
1630
1631     scrolwin->GetViewStart(&stx, &sty);
1632     m_Wnd->SetSize(absx - wxHTML_SCROLL_STEP * stx,
1633                    absy  - wxHTML_SCROLL_STEP * sty,
1634                    m_Width, m_Height);
1635 }
1636
1637
1638
1639 void wxHtmlWidgetCell::DrawInvisible(wxDC& WXUNUSED(dc),
1640                                      int WXUNUSED(x), int WXUNUSED(y),
1641                                      wxHtmlRenderingInfo& WXUNUSED(info))
1642 {
1643     int absx = 0, absy = 0, stx, sty;
1644     wxHtmlCell *c = this;
1645
1646     while (c)
1647     {
1648         absx += c->GetPosX();
1649         absy += c->GetPosY();
1650         c = c->GetParent();
1651     }
1652
1653     ((wxScrolledWindow*)(m_Wnd->GetParent()))->GetViewStart(&stx, &sty);
1654     m_Wnd->SetSize(absx - wxHTML_SCROLL_STEP * stx, absy  - wxHTML_SCROLL_STEP * sty, m_Width, m_Height);
1655 }
1656
1657
1658
1659 void wxHtmlWidgetCell::Layout(int w)
1660 {
1661     if (m_WidthFloat != 0)
1662     {
1663         m_Width = (w * m_WidthFloat) / 100;
1664         m_Wnd->SetSize(m_Width, m_Height);
1665     }
1666
1667     wxHtmlCell::Layout(w);
1668 }
1669
1670
1671
1672 // ----------------------------------------------------------------------------
1673 // wxHtmlTerminalCellsInterator
1674 // ----------------------------------------------------------------------------
1675
1676 const wxHtmlCell* wxHtmlTerminalCellsInterator::operator++()
1677 {
1678     if ( !m_pos )
1679         return NULL;
1680
1681     do
1682     {
1683         if ( m_pos == m_to )
1684         {
1685             m_pos = NULL;
1686             return NULL;
1687         }
1688
1689         if ( m_pos->GetNext() )
1690             m_pos = m_pos->GetNext();
1691         else
1692         {
1693             // we must go up the hierarchy until we reach container where this
1694             // is not the last child, and then go down to first terminal cell:
1695             while ( m_pos->GetNext() == NULL )
1696             {
1697                 m_pos = m_pos->GetParent();
1698                 if ( !m_pos )
1699                     return NULL;
1700             }
1701             m_pos = m_pos->GetNext();
1702         }
1703         while ( m_pos->GetFirstChild() != NULL )
1704             m_pos = m_pos->GetFirstChild();
1705     } while ( !m_pos->IsTerminalCell() );
1706
1707     return m_pos;
1708 }
1709
1710 #endif