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 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     wxDELETE(m_Link);
 241     if (link.GetHref() != wxEmptyString)
 242         m_Link = new wxHtmlLinkInfo(link);
 243 }
 244
 245
 246 void wxHtmlCell::Layout(int WXUNUSED(w))
 247 {
 248     SetPos(0, 0);
 249 }
 250
 251
 252
 253 const wxHtmlCell* wxHtmlCell::Find(int WXUNUSED(condition), const void* WXUNUSED(param)) const
 254 {
 255     return NULL;
 256 }
 257
 258
 259 wxHtmlCell *wxHtmlCell::FindCellByPos(wxCoord x, wxCoord y,
 260                                       unsigned flags) const
 261 {
 262     if ( x >= 0 && x < m_Width && y >= 0 && y < m_Height )
 263     {
 264         return wxConstCast(this, wxHtmlCell);
 265     }
 266     else
 267     {
 268         if ((flags & wxHTML_FIND_NEAREST_AFTER) &&
 269                 (y < 0 || (y < 0+m_Height && x < 0+m_Width)))
 270             return wxConstCast(this, wxHtmlCell);
 271         else if ((flags & wxHTML_FIND_NEAREST_BEFORE) &&
 272                 (y >= 0+m_Height || (y >= 0 && x >= 0)))
 273             return wxConstCast(this, wxHtmlCell);
 274         else
 275             return NULL;
 276     }
 277 }
 278
 279
 280 wxPoint wxHtmlCell::GetAbsPos(wxHtmlCell *rootCell) const
 281 {
 282     wxPoint p(m_PosX, m_PosY);
 283     for (wxHtmlCell *parent = m_Parent; parent && parent != rootCell;
 284          parent = parent->m_Parent)
 285     {
 286         p.x += parent->m_PosX;
 287         p.y += parent->m_PosY;
 288     }
 289     return p;
 290 }
 291
 292 wxHtmlCell *wxHtmlCell::GetRootCell() const
 293 {
 294     wxHtmlCell *c = wxConstCast(this, wxHtmlCell);
 295     while ( c->m_Parent )
 296         c = c->m_Parent;
 297     return c;
 298 }
 299
 300 unsigned wxHtmlCell::GetDepth() const
 301 {
 302     unsigned d = 0;
 303     for (wxHtmlCell *p = m_Parent; p; p = p->m_Parent)
 304         d++;
 305     return d;
 306 }
 307
 308 bool wxHtmlCell::IsBefore(wxHtmlCell *cell) const
 309 {
 310     const wxHtmlCell *c1 = this;
 311     const wxHtmlCell *c2 = cell;
 312     unsigned d1 = GetDepth();
 313     unsigned d2 = cell->GetDepth();
 314
 315     if ( d1 > d2 )
 316         for (; d1 != d2; d1-- )
 317             c1 = c1->m_Parent;
 318     else if ( d1 < d2 )
 319         for (; d1 != d2; d2-- )
 320             c2 = c2->m_Parent;
 321
 322     if ( cell == this )
 323         return true;
 324
 325     while ( c1 && c2 )
 326     {
 327         if ( c1->m_Parent == c2->m_Parent )
 328         {
 329             while ( c1 )
 330             {
 331                 if ( c1 == c2 )
 332                     return true;
 333                 c1 = c1->GetNext();
 334             }
 335             return false;
 336         }
 337         else
 338         {
 339             c1 = c1->m_Parent;
 340             c2 = c2->m_Parent;
 341         }
 342     }
 343
 344     wxFAIL_MSG(wxT("Cells are in different trees"));
 345     return false;
 346 }
 347
 348
 349 //-----------------------------------------------------------------------------
 350 // wxHtmlWordCell
 351 //-----------------------------------------------------------------------------
 352
 353 IMPLEMENT_ABSTRACT_CLASS(wxHtmlWordCell, wxHtmlCell)
 354
 355 wxHtmlWordCell::wxHtmlWordCell(const wxString& word, const wxDC& dc) : wxHtmlCell()
 356 {
 357     m_Word = word;
 358     wxCoord w, h, d;
 359     dc.GetTextExtent(m_Word, &w, &h, &d);
 360     m_Width = w;
 361     m_Height = h;
 362     m_Descent = d;
 363     SetCanLiveOnPagebreak(false);
 364     m_allowLinebreak = true;
 365 }
 366
 367 void wxHtmlWordCell::SetPreviousWord(wxHtmlWordCell *cell)
 368 {
 369     if ( cell && m_Parent == cell->m_Parent &&
 370          !wxIsspace(cell->m_Word.Last()) && !wxIsspace(m_Word[0u]) )
 371     {
 372         m_allowLinebreak = false;
 373     }
 374 }
 375
 376 // Splits m_Word into up to three parts according to selection, returns
 377 // substring before, in and after selection and the points (in relative coords)
 378 // where s2 and s3 start:
 379 void wxHtmlWordCell::Split(const wxDC& dc,
 380                            const wxPoint& selFrom, const wxPoint& selTo,
 381                            unsigned& pos1, unsigned& pos2) const
 382 {
 383     wxPoint pt1 = (selFrom == wxDefaultPosition) ?
 384                    wxDefaultPosition : selFrom - GetAbsPos();
 385     wxPoint pt2 = (selTo == wxDefaultPosition) ?
 386                    wxPoint(m_Width, wxDefaultCoord) : selTo - GetAbsPos();
 387
 388     // if the selection is entirely within this cell, make sure pt1 < pt2 in
 389     // order to make the rest of this function simpler:
 390     if ( selFrom != wxDefaultPosition && selTo != wxDefaultPosition &&
 391          selFrom.x > selTo.x )
 392     {
 393         wxPoint tmp = pt1;
 394         pt1 = pt2;
 395         pt2 = tmp;
 396     }
 397
 398     unsigned len = m_Word.length();
 399     unsigned i = 0;
 400     pos1 = 0;
 401
 402     // adjust for cases when the start/end position is completely
 403     // outside the cell:
 404     if ( pt1.y < 0 )
 405         pt1.x = 0;
 406     if ( pt2.y >= m_Height )
 407         pt2.x = m_Width;
 408
 409     // before selection:
 410     // (include character under caret only if in first half of width)
 411 #ifdef __WXMAC__
 412     // implementation using PartialExtents to support fractional widths
 413     wxArrayInt widths ;
 414     dc.GetPartialTextExtents(m_Word,widths) ;
 415     while( i < len && pt1.x >= widths[i] )
 416         i++ ;
 417     if ( i < len )
 418     {
 419         int charW = (i > 0) ? widths[i] - widths[i-1] : widths[i];
 420         if ( widths[i] - pt1.x < charW/2 )
 421             i++;
 422     }
 423 #else // !__WXMAC__
 424     wxCoord charW, charH;
 425     while ( pt1.x > 0 && i < len )
 426     {
 427         dc.GetTextExtent(m_Word[i], &charW, &charH);
 428         pt1.x -= charW;
 429         if ( pt1.x >= -charW/2 )
 430         {
 431             pos1 += charW;
 432             i++;
 433         }
 434     }
 435 #endif // __WXMAC__/!__WXMAC__
 436
 437     // in selection:
 438     // (include character under caret only if in first half of width)
 439     unsigned j = i;
 440 #ifdef __WXMAC__
 441     while( j < len && pt2.x >= widths[j] )
 442         j++ ;
 443     if ( j < len )
 444     {
 445         int charW = (j > 0) ? widths[j] - widths[j-1] : widths[j];
 446         if ( widths[j] - pt2.x < charW/2 )
 447             j++;
 448     }
 449 #else // !__WXMAC__
 450     pos2 = pos1;
 451     pt2.x -= pos2;
 452     while ( pt2.x > 0 && j < len )
 453     {
 454         dc.GetTextExtent(m_Word[j], &charW, &charH);
 455         pt2.x -= charW;
 456         if ( pt2.x >= -charW/2 )
 457         {
 458             pos2 += charW;
 459             j++;
 460         }
 461     }
 462 #endif // __WXMAC__/!__WXMAC__
 463
 464     pos1 = i;
 465     pos2 = j;
 466
 467     wxASSERT( pos2 >= pos1 );
 468 }
 469
 470 void wxHtmlWordCell::SetSelectionPrivPos(const wxDC& dc, wxHtmlSelection *s) const
 471 {
 472     unsigned p1, p2;
 473
 474     Split(dc,
 475           this == s->GetFromCell() ? s->GetFromPos() : wxDefaultPosition,
 476           this == s->GetToCell() ? s->GetToPos() : wxDefaultPosition,
 477           p1, p2);
 478
 479     if ( this == s->GetFromCell() )
 480         s->SetFromCharacterPos (p1); // selection starts here
 481     if ( this == s->GetToCell() )
 482         s->SetToCharacterPos (p2); // selection ends here
 483 }
 484
 485
 486 static void SwitchSelState(wxDC& dc, wxHtmlRenderingInfo& info,
 487                            bool toSelection)
 488 {
 489     wxColour fg = info.GetState().GetFgColour();
 490     wxColour bg = info.GetState().GetBgColour();
 491
 492     if ( toSelection )
 493     {
 494         dc.SetBackgroundMode(wxBRUSHSTYLE_SOLID);
 495         dc.SetTextForeground(info.GetStyle().GetSelectedTextColour(fg));
 496         dc.SetTextBackground(info.GetStyle().GetSelectedTextBgColour(bg));
 497         dc.SetBackground(wxBrush(info.GetStyle().GetSelectedTextBgColour(bg),
 498                                  wxBRUSHSTYLE_SOLID));
 499     }
 500     else
 501     {
 502         dc.SetBackgroundMode(wxBRUSHSTYLE_TRANSPARENT);
 503         dc.SetTextForeground(fg);
 504         dc.SetTextBackground(bg);
 505         dc.SetBackground(wxBrush(bg, wxBRUSHSTYLE_SOLID));
 506     }
 507 }
 508
 509
 510 void wxHtmlWordCell::Draw(wxDC& dc, int x, int y,
 511                           int WXUNUSED(view_y1), int WXUNUSED(view_y2),
 512                           wxHtmlRenderingInfo& info)
 513 {
 514 #if 0 // useful for debugging
 515     dc.SetPen(*wxBLACK_PEN);
 516     dc.DrawRectangle(x+m_PosX,y+m_PosY,m_Width /* VZ: +1? */ ,m_Height);
 517 #endif
 518
 519     bool drawSelectionAfterCell = false;
 520
 521     if ( info.GetState().GetSelectionState() == wxHTML_SEL_CHANGING )
 522     {
 523         // Selection changing, we must draw the word piecewise:
 524         wxHtmlSelection *s = info.GetSelection();
 525         wxString txt;
 526         int w, h;
 527         int ofs = 0;
 528
 529         // NB: this is quite a hack: in order to compute selection boundaries
 530         //     (in word's characters) we must know current font, which is only
 531         //     possible inside rendering code. Therefore we update the
 532         //     information here and store it in wxHtmlSelection so that
 533         //     ConvertToText can use it later:
 534         if ( !s->AreFromToCharacterPosSet () )
 535         {
 536             SetSelectionPrivPos(dc, s);
 537         }
 538
 539         int part1 = s->GetFromCell()==this ? s->GetFromCharacterPos() : 0;
 540         int part2 = s->GetToCell()==this   ? s->GetToCharacterPos()   : m_Word.Length();
 541
 542         if ( part1 > 0 )
 543         {
 544             txt = m_Word.Mid(0, part1);
 545             dc.DrawText(txt, x + m_PosX, y + m_PosY);
 546             dc.GetTextExtent(txt, &w, &h);
 547             ofs += w;
 548         }
 549
 550         SwitchSelState(dc, info, true);
 551
 552         txt = m_Word.Mid(part1, part2-part1);
 553         dc.DrawText(txt, ofs + x + m_PosX, y + m_PosY);
 554
 555         if ( (size_t)part2 < m_Word.length() )
 556         {
 557             dc.GetTextExtent(txt, &w, &h);
 558             ofs += w;
 559             SwitchSelState(dc, info, false);
 560             txt = m_Word.Mid(part2);
 561             dc.DrawText(txt, ofs + x + m_PosX, y + m_PosY);
 562         }
 563         else
 564             drawSelectionAfterCell = true;
 565     }
 566     else
 567     {
 568         wxHtmlSelectionState selstate = info.GetState().GetSelectionState();
 569         // Not changing selection state, draw the word in single mode:
 570         if ( selstate != wxHTML_SEL_OUT &&
 571              dc.GetBackgroundMode() != wxBRUSHSTYLE_SOLID )
 572         {
 573             SwitchSelState(dc, info, true);
 574         }
 575         else if ( selstate == wxHTML_SEL_OUT &&
 576                   dc.GetBackgroundMode() == wxBRUSHSTYLE_SOLID )
 577         {
 578             SwitchSelState(dc, info, false);
 579         }
 580         dc.DrawText(m_Word, x + m_PosX, y + m_PosY);
 581         drawSelectionAfterCell = (selstate != wxHTML_SEL_OUT);
 582     }
 583
 584     // NB: If the text is justified then there is usually some free space
 585     //     between adjacent cells and drawing the selection only onto cells
 586     //     would result in ugly unselected spaces. The code below detects
 587     //     this special case and renders the selection *outside* the sell,
 588     //     too.
 589     if ( m_Parent->GetAlignHor() == wxHTML_ALIGN_JUSTIFY &&
 590          drawSelectionAfterCell )
 591     {
 592         wxHtmlCell *nextCell = m_Next;
 593         while ( nextCell && nextCell->IsFormattingCell() )
 594             nextCell = nextCell->GetNext();
 595         if ( nextCell )
 596         {
 597             int nextX = nextCell->GetPosX();
 598             if ( m_PosX + m_Width < nextX )
 599             {
 600                 dc.SetBrush(dc.GetBackground());
 601                 dc.SetPen(*wxTRANSPARENT_PEN);
 602                 dc.DrawRectangle(x + m_PosX + m_Width, y + m_PosY,
 603                                  nextX - m_PosX - m_Width, m_Height);
 604             }
 605         }
 606     }
 607 }
 608
 609 wxCursor wxHtmlWordCell::GetMouseCursor(wxHtmlWindowInterface *window) const
 610 {
 611     if ( !GetLink() )
 612     {
 613         return window->GetHTMLCursor(wxHtmlWindowInterface::HTMLCursor_Text);
 614     }
 615     else
 616     {
 617         return wxHtmlCell::GetMouseCursor(window);
 618     }
 619 }
 620
 621 wxString wxHtmlWordCell::ConvertToText(wxHtmlSelection *s) const
 622 {
 623     if ( s && (this == s->GetFromCell() || this == s->GetToCell()) )
 624     {
 625         // VZ: we may be called before we had a chance to re-render ourselves
 626         //     and in this case GetFrom/ToPrivPos() is not set yet -- assume
 627         //     that this only happens in case of a double/triple click (which
 628         //     seems to be the case now) and so it makes sense to select the
 629         //     entire contents of the cell in this case
 630         //
 631         // TODO: but this really needs to be fixed in some better way later...
 632         if ( s->AreFromToCharacterPosSet() )
 633         {
 634             const int part1 = s->GetFromCell()==this ? s->GetFromCharacterPos() : 0;
 635             const int part2 = s->GetToCell()==this   ? s->GetToCharacterPos()   : m_Word.Length();
 636             if ( part1 == part2 )
 637                 return wxEmptyString;
 638             return GetPartAsText(part1, part2);
 639         }
 640         //else: return the whole word below
 641     }
 642
 643     return GetAllAsText();
 644 }
 645
 646 wxString wxHtmlWordWithTabsCell::GetAllAsText() const
 647 {
 648     return m_wordOrig;
 649 }
 650
 651 wxString wxHtmlWordWithTabsCell::GetPartAsText(int begin, int end) const
 652 {
 653     // NB: The 'begin' and 'end' positions are in the _displayed_ text
 654     //     (stored in m_Word) and not in the text with tabs that should
 655     //     be copied to clipboard (m_wordOrig).
 656     //
 657     // NB: Because selection is performed on displayed text, it's possible
 658     //     to select e.g. "half of TAB character" -- IOW, 'begin' and 'end'
 659     //     may be in the middle of TAB character expansion into ' 's. In this
 660     //     case, we copy the TAB character to clipboard once.
 661
 662     wxASSERT( begin < end );
 663
 664     const unsigned SPACES_PER_TAB = 8;
 665
 666     wxString sel;
 667
 668     int pos = 0;
 669     wxString::const_iterator i = m_wordOrig.begin();
 670
 671     // find the beginning of text to copy:
 672     for ( ; pos < begin; ++i )
 673     {
 674         if ( *i == '\t' )
 675         {
 676             pos += 8 - (m_linepos + pos) % SPACES_PER_TAB;
 677             if ( pos >= begin )
 678             {
 679                 sel += '\t';
 680             }
 681         }
 682         else
 683         {
 684             ++pos;
 685         }
 686     }
 687
 688     // copy the content until we reach 'end':
 689     for ( ; pos < end; ++i )
 690     {
 691         const wxChar c = *i;
 692         sel += c;
 693
 694         if ( c == '\t' )
 695             pos += 8 - (m_linepos + pos) % SPACES_PER_TAB;
 696         else
 697             ++pos;
 698     }
 699
 700     return sel;
 701 }
 702
 703
 704
 705 //-----------------------------------------------------------------------------
 706 // wxHtmlContainerCell
 707 //-----------------------------------------------------------------------------
 708
 709 IMPLEMENT_ABSTRACT_CLASS(wxHtmlContainerCell, wxHtmlCell)
 710
 711 wxHtmlContainerCell::wxHtmlContainerCell(wxHtmlContainerCell *parent) : wxHtmlCell()
 712 {
 713     m_Cells = m_LastCell = NULL;
 714     m_Parent = parent;
 715     m_MaxTotalWidth = 0;
 716     if (m_Parent) m_Parent->InsertCell(this);
 717     m_AlignHor = wxHTML_ALIGN_LEFT;
 718     m_AlignVer = wxHTML_ALIGN_BOTTOM;
 719     m_IndentLeft = m_IndentRight = m_IndentTop = m_IndentBottom = 0;
 720     m_WidthFloat = 100; m_WidthFloatUnits = wxHTML_UNITS_PERCENT;
 721     m_UseBkColour = false;
 722     m_Border = 0;
 723     m_MinHeight = 0;
 724     m_MinHeightAlign = wxHTML_ALIGN_TOP;
 725     m_LastLayout = -1;
 726 }
 727
 728 wxHtmlContainerCell::~wxHtmlContainerCell()
 729 {
 730     wxHtmlCell *cell = m_Cells;
 731     while ( cell )
 732     {
 733         wxHtmlCell *cellNext = cell->GetNext();
 734         delete cell;
 735         cell = cellNext;
 736     }
 737 }
 738
 739
 740
 741 void wxHtmlContainerCell::SetIndent(int i, int what, int units)
 742 {
 743     int val = (units == wxHTML_UNITS_PIXELS) ? i : -i;
 744     if (what & wxHTML_INDENT_LEFT) m_IndentLeft = val;
 745     if (what & wxHTML_INDENT_RIGHT) m_IndentRight = val;
 746     if (what & wxHTML_INDENT_TOP) m_IndentTop = val;
 747     if (what & wxHTML_INDENT_BOTTOM) m_IndentBottom = val;
 748     m_LastLayout = -1;
 749 }
 750
 751
 752
 753 int wxHtmlContainerCell::GetIndent(int ind) const
 754 {
 755     if (ind & wxHTML_INDENT_LEFT) return m_IndentLeft;
 756     else if (ind & wxHTML_INDENT_RIGHT) return m_IndentRight;
 757     else if (ind & wxHTML_INDENT_TOP) return m_IndentTop;
 758     else if (ind & wxHTML_INDENT_BOTTOM) return m_IndentBottom;
 759     else return -1; /* BUG! Should not be called... */
 760 }
 761
 762
 763
 764
 765 int wxHtmlContainerCell::GetIndentUnits(int ind) const
 766 {
 767     bool p = false;
 768     if (ind & wxHTML_INDENT_LEFT) p = m_IndentLeft < 0;
 769     else if (ind & wxHTML_INDENT_RIGHT) p = m_IndentRight < 0;
 770     else if (ind & wxHTML_INDENT_TOP) p = m_IndentTop < 0;
 771     else if (ind & wxHTML_INDENT_BOTTOM) p = m_IndentBottom < 0;
 772     if (p) return wxHTML_UNITS_PERCENT;
 773     else return wxHTML_UNITS_PIXELS;
 774 }
 775
 776
 777 bool wxHtmlContainerCell::AdjustPagebreak(int *pagebreak,
 778                                           wxArrayInt& known_pagebreaks) const
 779 {
 780     if (!m_CanLiveOnPagebreak)
 781         return wxHtmlCell::AdjustPagebreak(pagebreak, known_pagebreaks);
 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))
 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_UseBkColour)
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     if (m_UseBkColour)
1221         return m_BkColour;
1222     else
1223         return wxNullColour;
1224 }
1225
1226
1227
1228 wxHtmlLinkInfo *wxHtmlContainerCell::GetLink(int x, int y) const
1229 {
1230     wxHtmlCell *cell = FindCellByPos(x, y);
1231
1232     // VZ: I don't know if we should pass absolute or relative coords to
1233     //     wxHtmlCell::GetLink()? As the base class version just ignores them
1234     //     anyhow, it hardly matters right now but should still be clarified
1235     return cell ? cell->GetLink(x, y) : NULL;
1236 }
1237
1238
1239
1240 void wxHtmlContainerCell::InsertCell(wxHtmlCell *f)
1241 {
1242     if (!m_Cells) m_Cells = m_LastCell = f;
1243     else
1244     {
1245         m_LastCell->SetNext(f);
1246         m_LastCell = f;
1247         if (m_LastCell) while (m_LastCell->GetNext()) m_LastCell = m_LastCell->GetNext();
1248     }
1249     f->SetParent(this);
1250     m_LastLayout = -1;
1251 }
1252
1253
1254
1255 void wxHtmlContainerCell::SetAlign(const wxHtmlTag& tag)
1256 {
1257     if (tag.HasParam(wxT("ALIGN")))
1258     {
1259         wxString alg = tag.GetParam(wxT("ALIGN"));
1260         alg.MakeUpper();
1261         if (alg == wxT("CENTER"))
1262             SetAlignHor(wxHTML_ALIGN_CENTER);
1263         else if (alg == wxT("LEFT"))
1264             SetAlignHor(wxHTML_ALIGN_LEFT);
1265         else if (alg == wxT("JUSTIFY"))
1266             SetAlignHor(wxHTML_ALIGN_JUSTIFY);
1267         else if (alg == wxT("RIGHT"))
1268             SetAlignHor(wxHTML_ALIGN_RIGHT);
1269         m_LastLayout = -1;
1270     }
1271 }
1272
1273
1274
1275 void wxHtmlContainerCell::SetWidthFloat(const wxHtmlTag& tag, double pixel_scale)
1276 {
1277     if (tag.HasParam(wxT("WIDTH")))
1278     {
1279         int wdi;
1280         wxString wd = tag.GetParam(wxT("WIDTH"));
1281
1282         if (wd[wd.length()-1] == wxT('%'))
1283         {
1284             wxSscanf(wd.c_str(), wxT("%i%%"), &wdi);
1285             SetWidthFloat(wdi, wxHTML_UNITS_PERCENT);
1286         }
1287         else
1288         {
1289             wxSscanf(wd.c_str(), wxT("%i"), &wdi);
1290             SetWidthFloat((int)(pixel_scale * (double)wdi), wxHTML_UNITS_PIXELS);
1291         }
1292         m_LastLayout = -1;
1293     }
1294 }
1295
1296
1297
1298 const wxHtmlCell* wxHtmlContainerCell::Find(int condition, const void* param) const
1299 {
1300     if (m_Cells)
1301     {
1302         for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
1303         {
1304             const wxHtmlCell *r = cell->Find(condition, param);
1305             if (r) return r;
1306         }
1307     }
1308     return NULL;
1309 }
1310
1311
1312 wxHtmlCell *wxHtmlContainerCell::FindCellByPos(wxCoord x, wxCoord y,
1313                                                unsigned flags) const
1314 {
1315     if ( flags & wxHTML_FIND_EXACT )
1316     {
1317         for ( const wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext() )
1318         {
1319             int cx = cell->GetPosX(),
1320                 cy = cell->GetPosY();
1321
1322             if ( (cx <= x) && (cx + cell->GetWidth() > x) &&
1323                  (cy <= y) && (cy + cell->GetHeight() > y) )
1324             {
1325                 return cell->FindCellByPos(x - cx, y - cy, flags);
1326             }
1327         }
1328     }
1329     else if ( flags & wxHTML_FIND_NEAREST_AFTER )
1330     {
1331         wxHtmlCell *c;
1332         for ( const wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext() )
1333         {
1334             if ( cell->IsFormattingCell() )
1335                 continue;
1336             int cellY = cell->GetPosY();
1337             if (!( y < cellY || (y < cellY + cell->GetHeight() &&
1338                                  x < cell->GetPosX() + cell->GetWidth()) ))
1339                 continue;
1340
1341             c = cell->FindCellByPos(x - cell->GetPosX(), y - cellY, flags);
1342             if (c) return c;
1343         }
1344     }
1345     else if ( flags & wxHTML_FIND_NEAREST_BEFORE )
1346     {
1347         wxHtmlCell *c2, *c = NULL;
1348         for ( const wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext() )
1349         {
1350             if ( cell->IsFormattingCell() )
1351                 continue;
1352             int cellY = cell->GetPosY();
1353             if (!( cellY + cell->GetHeight() <= y ||
1354                    (y >= cellY && x >= cell->GetPosX()) ))
1355                 break;
1356             c2 = cell->FindCellByPos(x - cell->GetPosX(), y - cellY, flags);
1357             if (c2)
1358                 c = c2;
1359         }
1360         if (c) return c;
1361     }
1362
1363     return NULL;
1364 }
1365
1366
1367 bool wxHtmlContainerCell::ProcessMouseClick(wxHtmlWindowInterface *window,
1368                                             const wxPoint& pos,
1369                                             const wxMouseEvent& event)
1370 {
1371 #if WXWIN_COMPATIBILITY_2_6
1372     wxHtmlCellOnMouseClickCompatHelper compat(window, pos, event);
1373     return compat.CallOnMouseClick(this);
1374 }
1375
1376 void wxHtmlContainerCell::OnMouseClick(wxWindow*,
1377                                        int, int, const wxMouseEvent& event)
1378 {
1379     wxCHECK_RET( gs_helperOnMouseClick, wxT("unexpected call to OnMouseClick") );
1380     wxHtmlWindowInterface *window = gs_helperOnMouseClick->window;
1381     const wxPoint& pos = gs_helperOnMouseClick->pos;
1382 #endif // WXWIN_COMPATIBILITY_2_6
1383
1384     bool retval = false;
1385     wxHtmlCell *cell = FindCellByPos(pos.x, pos.y);
1386     if ( cell )
1387         retval = cell->ProcessMouseClick(window, pos, event);
1388
1389 #if WXWIN_COMPATIBILITY_2_6
1390     gs_helperOnMouseClick->retval = retval;
1391 #else
1392     return retval;
1393 #endif // WXWIN_COMPATIBILITY_2_6
1394 }
1395
1396
1397 wxHtmlCell *wxHtmlContainerCell::GetFirstTerminal() const
1398 {
1399     if ( m_Cells )
1400     {
1401         wxHtmlCell *c2;
1402         for (wxHtmlCell *c = m_Cells; c; c = c->GetNext())
1403         {
1404             c2 = c->GetFirstTerminal();
1405             if ( c2 )
1406                 return c2;
1407         }
1408     }
1409     return NULL;
1410 }
1411
1412 wxHtmlCell *wxHtmlContainerCell::GetLastTerminal() const
1413 {
1414     if ( m_Cells )
1415     {
1416         // most common case first:
1417         wxHtmlCell *c = m_LastCell->GetLastTerminal();
1418         if ( c )
1419             return c;
1420
1421         wxHtmlCell *ctmp;
1422         wxHtmlCell *c2 = NULL;
1423         for (c = m_Cells; c; c = c->GetNext())
1424         {
1425             ctmp = c->GetLastTerminal();
1426             if ( ctmp )
1427                 c2 = ctmp;
1428         }
1429         return c2;
1430     }
1431     else
1432         return NULL;
1433 }
1434
1435
1436 static bool IsEmptyContainer(wxHtmlContainerCell *cell)
1437 {
1438     for ( wxHtmlCell *c = cell->GetFirstChild(); c; c = c->GetNext() )
1439     {
1440         if ( !c->IsTerminalCell() || !c->IsFormattingCell() )
1441             return false;
1442     }
1443     return true;
1444 }
1445
1446 void wxHtmlContainerCell::RemoveExtraSpacing(bool top, bool bottom)
1447 {
1448     if ( top )
1449         SetIndent(0, wxHTML_INDENT_TOP);
1450     if ( bottom )
1451         SetIndent(0, wxHTML_INDENT_BOTTOM);
1452
1453     if ( m_Cells )
1454     {
1455         wxHtmlCell *c;
1456         wxHtmlContainerCell *cont;
1457         if ( top )
1458         {
1459             for ( c = m_Cells; c; c = c->GetNext() )
1460             {
1461                 if ( c->IsTerminalCell() )
1462                 {
1463                     if ( !c->IsFormattingCell() )
1464                         break;
1465                 }
1466                 else
1467                 {
1468                     cont = (wxHtmlContainerCell*)c;
1469                     if ( IsEmptyContainer(cont) )
1470                     {
1471                         cont->SetIndent(0, wxHTML_INDENT_VERTICAL);
1472                     }
1473                     else
1474                     {
1475                         cont->RemoveExtraSpacing(true, false);
1476                         break;
1477                     }
1478                 }
1479             }
1480         }
1481
1482         if ( bottom )
1483         {
1484             wxArrayPtrVoid arr;
1485             for ( c = m_Cells; c; c = c->GetNext() )
1486                 arr.Add((void*)c);
1487
1488             for ( int i = arr.GetCount() - 1; i >= 0; i--)
1489             {
1490                 c = (wxHtmlCell*)arr[i];
1491                 if ( c->IsTerminalCell() )
1492                 {
1493                     if ( !c->IsFormattingCell() )
1494                         break;
1495                 }
1496                 else
1497                 {
1498                     cont = (wxHtmlContainerCell*)c;
1499                     if ( IsEmptyContainer(cont) )
1500                     {
1501                         cont->SetIndent(0, wxHTML_INDENT_VERTICAL);
1502                     }
1503                     else
1504                     {
1505                         cont->RemoveExtraSpacing(false, true);
1506                         break;
1507                     }
1508                 }
1509             }
1510         }
1511     }
1512 }
1513
1514
1515
1516
1517 // --------------------------------------------------------------------------
1518 // wxHtmlColourCell
1519 // --------------------------------------------------------------------------
1520
1521 IMPLEMENT_ABSTRACT_CLASS(wxHtmlColourCell, wxHtmlCell)
1522
1523 void wxHtmlColourCell::Draw(wxDC& dc,
1524                             int x, int y,
1525                             int WXUNUSED(view_y1), int WXUNUSED(view_y2),
1526                             wxHtmlRenderingInfo& info)
1527 {
1528     DrawInvisible(dc, x, y, info);
1529 }
1530
1531 void wxHtmlColourCell::DrawInvisible(wxDC& dc,
1532                                      int WXUNUSED(x), int WXUNUSED(y),
1533                                      wxHtmlRenderingInfo& info)
1534 {
1535     wxHtmlRenderingState& state = info.GetState();
1536     if (m_Flags & wxHTML_CLR_FOREGROUND)
1537     {
1538         state.SetFgColour(m_Colour);
1539         if (state.GetSelectionState() != wxHTML_SEL_IN)
1540             dc.SetTextForeground(m_Colour);
1541         else
1542             dc.SetTextForeground(
1543                     info.GetStyle().GetSelectedTextColour(m_Colour));
1544     }
1545     if (m_Flags & wxHTML_CLR_BACKGROUND)
1546     {
1547         state.SetBgColour(m_Colour);
1548         if (state.GetSelectionState() != wxHTML_SEL_IN)
1549         {
1550             dc.SetTextBackground(m_Colour);
1551             dc.SetBackground(wxBrush(m_Colour, wxBRUSHSTYLE_SOLID));
1552         }
1553         else
1554         {
1555             wxColour c = info.GetStyle().GetSelectedTextBgColour(m_Colour);
1556             dc.SetTextBackground(c);
1557             dc.SetBackground(wxBrush(c, wxBRUSHSTYLE_SOLID));
1558         }
1559     }
1560 }
1561
1562
1563
1564
1565 // ---------------------------------------------------------------------------
1566 // wxHtmlFontCell
1567 // ---------------------------------------------------------------------------
1568
1569 IMPLEMENT_ABSTRACT_CLASS(wxHtmlFontCell, wxHtmlCell)
1570
1571 void wxHtmlFontCell::Draw(wxDC& dc,
1572                           int WXUNUSED(x), int WXUNUSED(y),
1573                           int WXUNUSED(view_y1), int WXUNUSED(view_y2),
1574                           wxHtmlRenderingInfo& WXUNUSED(info))
1575 {
1576     dc.SetFont(m_Font);
1577 }
1578
1579 void wxHtmlFontCell::DrawInvisible(wxDC& dc, int WXUNUSED(x), int WXUNUSED(y),
1580                                    wxHtmlRenderingInfo& WXUNUSED(info))
1581 {
1582     dc.SetFont(m_Font);
1583 }
1584
1585
1586
1587
1588
1589
1590
1591
1592 // ---------------------------------------------------------------------------
1593 // wxHtmlWidgetCell
1594 // ---------------------------------------------------------------------------
1595
1596 IMPLEMENT_ABSTRACT_CLASS(wxHtmlWidgetCell, wxHtmlCell)
1597
1598 wxHtmlWidgetCell::wxHtmlWidgetCell(wxWindow *wnd, int w)
1599 {
1600     int sx, sy;
1601     m_Wnd = wnd;
1602     m_Wnd->GetSize(&sx, &sy);
1603     m_Width = sx, m_Height = sy;
1604     m_WidthFloat = w;
1605 }
1606
1607
1608 void wxHtmlWidgetCell::Draw(wxDC& WXUNUSED(dc),
1609                             int WXUNUSED(x), int WXUNUSED(y),
1610                             int WXUNUSED(view_y1), int WXUNUSED(view_y2),
1611                             wxHtmlRenderingInfo& WXUNUSED(info))
1612 {
1613     int absx = 0, absy = 0, stx, sty;
1614     wxHtmlCell *c = this;
1615
1616     while (c)
1617     {
1618         absx += c->GetPosX();
1619         absy += c->GetPosY();
1620         c = c->GetParent();
1621     }
1622
1623     wxScrolledWindow *scrolwin =
1624         wxDynamicCast(m_Wnd->GetParent(), wxScrolledWindow);
1625     wxCHECK_RET( scrolwin,
1626                  wxT("widget cells can only be placed in wxHtmlWindow") );
1627
1628     scrolwin->GetViewStart(&stx, &sty);
1629     m_Wnd->SetSize(absx - wxHTML_SCROLL_STEP * stx,
1630                    absy  - wxHTML_SCROLL_STEP * sty,
1631                    m_Width, m_Height);
1632 }
1633
1634
1635
1636 void wxHtmlWidgetCell::DrawInvisible(wxDC& WXUNUSED(dc),
1637                                      int WXUNUSED(x), int WXUNUSED(y),
1638                                      wxHtmlRenderingInfo& WXUNUSED(info))
1639 {
1640     int absx = 0, absy = 0, stx, sty;
1641     wxHtmlCell *c = this;
1642
1643     while (c)
1644     {
1645         absx += c->GetPosX();
1646         absy += c->GetPosY();
1647         c = c->GetParent();
1648     }
1649
1650     ((wxScrolledWindow*)(m_Wnd->GetParent()))->GetViewStart(&stx, &sty);
1651     m_Wnd->SetSize(absx - wxHTML_SCROLL_STEP * stx, absy  - wxHTML_SCROLL_STEP * sty, m_Width, m_Height);
1652 }
1653
1654
1655
1656 void wxHtmlWidgetCell::Layout(int w)
1657 {
1658     if (m_WidthFloat != 0)
1659     {
1660         m_Width = (w * m_WidthFloat) / 100;
1661         m_Wnd->SetSize(m_Width, m_Height);
1662     }
1663
1664     wxHtmlCell::Layout(w);
1665 }
1666
1667
1668
1669 // ----------------------------------------------------------------------------
1670 // wxHtmlTerminalCellsInterator
1671 // ----------------------------------------------------------------------------
1672
1673 const wxHtmlCell* wxHtmlTerminalCellsInterator::operator++()
1674 {
1675     if ( !m_pos )
1676         return NULL;
1677
1678     do
1679     {
1680         if ( m_pos == m_to )
1681         {
1682             m_pos = NULL;
1683             return NULL;
1684         }
1685
1686         if ( m_pos->GetNext() )
1687             m_pos = m_pos->GetNext();
1688         else
1689         {
1690             // we must go up the hierarchy until we reach container where this
1691             // is not the last child, and then go down to first terminal cell:
1692             while ( m_pos->GetNext() == NULL )
1693             {
1694                 m_pos = m_pos->GetParent();
1695                 if ( !m_pos )
1696                     return NULL;
1697             }
1698             m_pos = m_pos->GetNext();
1699         }
1700         while ( m_pos->GetFirstChild() != NULL )
1701             m_pos = m_pos->GetFirstChild();
1702     } while ( !m_pos->IsTerminalCell() );
1703
1704     return m_pos;
1705 }
1706
1707 #endif