src/html/htmlcell.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        htmlcell.cpp
   3 // Purpose:     wxHtmlCell - basic element of HTML output
   4 // Author:      Vaclav Slavik
   5 // RCS-ID:      $Id$
   6 // Copyright:   (c) 1999 Vaclav Slavik
   7 // Licence:     wxWindows Licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 #ifdef __GNUG__
  11 #pragma implementation "htmlcell.h"
  12 #endif
  13
  14 #include "wx/wxprec.h"
  15
  16 #include "wx/defs.h"
  17
  18 #if wxUSE_HTML && wxUSE_STREAMS
  19
  20 #ifdef __BORLANDC__
  21 #pragma hdrstop
  22 #endif
  23
  24 #ifndef WXPRECOMP
  25     #include "wx/brush.h"
  26     #include "wx/colour.h"
  27     #include "wx/dc.h"
  28 #endif
  29
  30 #include "wx/html/htmlcell.h"
  31 #include "wx/html/htmlwin.h"
  32 #include "wx/settings.h"
  33 #include "wx/module.h"
  34
  35 #include <stdlib.h>
  36
  37 //-----------------------------------------------------------------------------
  38 // Global variables
  39 //-----------------------------------------------------------------------------
  40
  41 static wxCursor *gs_cursorLink = NULL;
  42 static wxCursor *gs_cursorText = NULL;
  43
  44
  45 //-----------------------------------------------------------------------------
  46 // Helper classes
  47 //-----------------------------------------------------------------------------
  48
  49 void wxHtmlSelection::Set(const wxPoint& fromPos, const wxHtmlCell *fromCell,
  50                           const wxPoint& toPos, const wxHtmlCell *toCell)
  51 {
  52     m_fromCell = fromCell;
  53     m_toCell = toCell;
  54     m_fromPos = fromPos;
  55     m_toPos = toPos;
  56 }
  57
  58 void wxHtmlSelection::Set(const wxHtmlCell *fromCell, const wxHtmlCell *toCell)
  59 {
  60     wxPoint p1 = fromCell ? fromCell->GetAbsPos() : wxDefaultPosition;
  61     wxPoint p2 = toCell ? toCell->GetAbsPos() : wxDefaultPosition;
  62     if ( toCell )
  63     {
  64         p2.x += toCell->GetWidth()-1;
  65         p2.y += toCell->GetHeight()-1;
  66     }
  67     Set(p1, fromCell, p2, toCell);
  68 }
  69
  70 wxColour wxDefaultHtmlRenderingStyle::GetSelectedTextColour(
  71                                         const wxColour& clr)
  72 {
  73     return wxSystemSettings::GetColour(wxSYS_COLOUR_HIGHLIGHTTEXT);
  74 }
  75
  76 wxColour wxDefaultHtmlRenderingStyle::GetSelectedTextBgColour(
  77                                         const wxColour& WXUNUSED(clr))
  78 {
  79     return wxSystemSettings::GetColour(wxSYS_COLOUR_HIGHLIGHT);
  80 }
  81
  82
  83 //-----------------------------------------------------------------------------
  84 // wxHtmlCell
  85 //-----------------------------------------------------------------------------
  86
  87 wxHtmlCell::wxHtmlCell() : wxObject()
  88 {
  89     m_Next = NULL;
  90     m_Parent = NULL;
  91     m_Width = m_Height = m_Descent = 0;
  92     m_CanLiveOnPagebreak = TRUE;
  93     m_Link = NULL;
  94 }
  95
  96 wxHtmlCell::~wxHtmlCell()
  97 {
  98     delete m_Link;
  99 }
 100
 101
 102 void wxHtmlCell::OnMouseClick(wxWindow *parent, int x, int y,
 103                               const wxMouseEvent& event)
 104 {
 105     wxHtmlLinkInfo *lnk = GetLink(x, y);
 106     if (lnk != NULL)
 107     {
 108         wxHtmlLinkInfo lnk2(*lnk);
 109         lnk2.SetEvent(&event);
 110         lnk2.SetHtmlCell(this);
 111
 112         // note : this cast is legal because parent is *always* wxHtmlWindow
 113         wxStaticCast(parent, wxHtmlWindow)->OnLinkClicked(lnk2);
 114     }
 115 }
 116
 117
 118 wxCursor wxHtmlCell::GetCursor() const
 119 {
 120     if ( GetLink() )
 121     {
 122         if ( !gs_cursorLink )
 123             gs_cursorLink = new wxCursor(wxCURSOR_HAND);
 124         return *gs_cursorLink;
 125     }
 126     else
 127         return *wxSTANDARD_CURSOR;
 128 }
 129
 130
 131 bool wxHtmlCell::AdjustPagebreak(int *pagebreak, int* WXUNUSED(known_pagebreaks), int WXUNUSED(number_of_pages)) const
 132 {
 133     if ((!m_CanLiveOnPagebreak) &&
 134                 m_PosY < *pagebreak && m_PosY + m_Height > *pagebreak)
 135     {
 136         *pagebreak = m_PosY;
 137         return TRUE;
 138     }
 139
 140     return FALSE;
 141 }
 142
 143
 144
 145 void wxHtmlCell::SetLink(const wxHtmlLinkInfo& link)
 146 {
 147     if (m_Link) delete m_Link;
 148     m_Link = NULL;
 149     if (link.GetHref() != wxEmptyString)
 150         m_Link = new wxHtmlLinkInfo(link);
 151 }
 152
 153
 154 void wxHtmlCell::Layout(int WXUNUSED(w))
 155 {
 156     SetPos(0, 0);
 157 }
 158
 159
 160
 161 const wxHtmlCell* wxHtmlCell::Find(int WXUNUSED(condition), const void* WXUNUSED(param)) const
 162 {
 163     return NULL;
 164 }
 165
 166
 167 wxHtmlCell *wxHtmlCell::FindCellByPos(wxCoord x, wxCoord y,
 168                                       unsigned flags) const
 169 {
 170     if ( x >= 0 && x < m_Width && y >= 0 && y < m_Height )
 171     {
 172         return wxConstCast(this, wxHtmlCell);
 173     }
 174     else
 175     {
 176         if ((flags & wxHTML_FIND_NEAREST_AFTER) &&
 177                 (y < 0 || (y < 0+m_Height && x < 0+m_Width)))
 178             return wxConstCast(this, wxHtmlCell);
 179         else if ((flags & wxHTML_FIND_NEAREST_BEFORE) &&
 180                 (y >= 0+m_Height || (y >= 0 && x >= 0)))
 181             return wxConstCast(this, wxHtmlCell);
 182         else
 183             return NULL;
 184     }
 185 }
 186
 187
 188 wxPoint wxHtmlCell::GetAbsPos() const
 189 {
 190     wxPoint p(m_PosX, m_PosY);
 191     for (wxHtmlCell *parent = m_Parent; parent; parent = parent->m_Parent)
 192     {
 193         p.x += parent->m_PosX;
 194         p.y += parent->m_PosY;
 195     }
 196     return p;
 197 }
 198
 199 unsigned wxHtmlCell::GetDepth() const
 200 {
 201     unsigned d = 0;
 202     for (wxHtmlCell *p = m_Parent; p; p = p->m_Parent)
 203         d++;
 204     return d;
 205 }
 206
 207 bool wxHtmlCell::IsBefore(wxHtmlCell *cell) const
 208 {
 209     const wxHtmlCell *c1 = this;
 210     const wxHtmlCell *c2 = cell;
 211     unsigned d1 = GetDepth();
 212     unsigned d2 = cell->GetDepth();
 213
 214     if ( d1 > d2 )
 215         for (; d1 != d2; d1-- )
 216             c1 = c1->m_Parent;
 217     else if ( d1 < d2 )
 218         for (; d1 != d2; d2-- )
 219             c2 = c2->m_Parent;
 220
 221     if ( cell == this )
 222         return true;
 223
 224     while ( c1 && c2 )
 225     {
 226         if ( c1->m_Parent == c2->m_Parent )
 227         {
 228             while ( c1 )
 229             {
 230                 if ( c1 == c2 )
 231                     return true;
 232                 c1 = c1->GetNext();
 233             }
 234             return false;
 235         }
 236         else
 237         {
 238             c1 = c1->m_Parent;
 239             c2 = c2->m_Parent;
 240         }
 241     }
 242
 243     wxFAIL_MSG(_T("Cells are in different trees"));
 244     return false;
 245 }
 246
 247
 248 //-----------------------------------------------------------------------------
 249 // wxHtmlWordCell
 250 //-----------------------------------------------------------------------------
 251
 252 wxHtmlWordCell::wxHtmlWordCell(const wxString& word, wxDC& dc) : wxHtmlCell()
 253 {
 254     m_Word = word;
 255     dc.GetTextExtent(m_Word, &m_Width, &m_Height, &m_Descent);
 256     SetCanLiveOnPagebreak(FALSE);
 257     m_allowLinebreak = true;
 258 }
 259
 260 void wxHtmlWordCell::SetPreviousWord(wxHtmlWordCell *cell)
 261 {
 262     if ( cell && m_Parent == cell->m_Parent &&
 263          !wxIsspace(cell->m_Word.Last()) && !wxIsspace(m_Word[0u]) )
 264     {
 265         m_allowLinebreak = false;
 266     }
 267 }
 268
 269 // Splits m_Word into up to three parts according to selection, returns
 270 // substring before, in and after selection and the points (in relative coords)
 271 // where s2 and s3 start:
 272 void wxHtmlWordCell::Split(wxDC& dc,
 273                            const wxPoint& selFrom, const wxPoint& selTo,
 274                            unsigned& pos1, unsigned& pos2) const
 275 {
 276     wxPoint pt1 = (selFrom == wxDefaultPosition) ?
 277                    wxDefaultPosition : selFrom - GetAbsPos();
 278     wxPoint pt2 = (selTo == wxDefaultPosition) ?
 279                    wxPoint(m_Width, -1) : selTo - GetAbsPos();
 280
 281     wxCoord charW, charH;
 282     unsigned len = m_Word.length();
 283     unsigned i = 0;
 284     pos1 = 0;
 285
 286     // adjust for cases when the start/end position is completely
 287     // outside the cell:
 288     if ( pt1.y < 0 )
 289         pt1.x = 0;
 290     if ( pt2.y >= m_Height )
 291         pt2.x = m_Width;
 292
 293     // before selection:
 294     while ( pt1.x > 0 && i < len )
 295     {
 296         dc.GetTextExtent(m_Word[i], &charW, &charH);
 297         pt1.x -= charW;
 298         if ( pt1.x >= 0 )
 299         {
 300             pos1 += charW;
 301             i++;
 302         }
 303     }
 304
 305     // in selection:
 306     unsigned j = i;
 307     pos2 = pos1;
 308     pt2.x -= pos2;
 309     while ( pt2.x > 0 && j < len )
 310     {
 311         dc.GetTextExtent(m_Word[j], &charW, &charH);
 312         pt2.x -= charW;
 313         if ( pt2.x >= 0 )
 314         {
 315             pos2 += charW;
 316             j++;
 317         }
 318     }
 319
 320     pos1 = i;
 321     pos2 = j;
 322 }
 323
 324 void wxHtmlWordCell::SetSelectionPrivPos(wxDC& dc, wxHtmlSelection *s) const
 325 {
 326     unsigned p1, p2;
 327
 328     Split(dc,
 329           this == s->GetFromCell() ? s->GetFromPos() : wxDefaultPosition,
 330           this == s->GetToCell() ? s->GetToPos() : wxDefaultPosition,
 331           p1, p2);
 332
 333     wxPoint p(0, m_Word.length());
 334
 335     if ( this == s->GetFromCell() )
 336         p.x = p1; // selection starts here
 337     if ( this == s->GetToCell() )
 338         p.y = p2; // selection ends here
 339
 340     if ( this == s->GetFromCell() )
 341         s->SetFromPrivPos(p);
 342     if ( this == s->GetToCell() )
 343         s->SetToPrivPos(p);
 344 }
 345
 346
 347 static void SwitchSelState(wxDC& dc, wxHtmlRenderingInfo& info,
 348                            bool toSelection)
 349 {
 350     wxColour fg = info.GetState().GetFgColour();
 351     wxColour bg = info.GetState().GetBgColour();
 352
 353     if ( toSelection )
 354     {
 355         dc.SetBackgroundMode(wxSOLID);
 356         dc.SetTextForeground(info.GetStyle().GetSelectedTextColour(fg));
 357         dc.SetTextBackground(info.GetStyle().GetSelectedTextBgColour(bg));
 358         dc.SetBackground(wxBrush(info.GetStyle().GetSelectedTextBgColour(bg),
 359                                  wxSOLID));
 360     }
 361     else
 362     {
 363         dc.SetBackgroundMode(wxTRANSPARENT);
 364         dc.SetTextForeground(fg);
 365         dc.SetTextBackground(bg);
 366         dc.SetBackground(wxBrush(bg, wxSOLID));
 367     }
 368 }
 369
 370
 371 void wxHtmlWordCell::Draw(wxDC& dc, int x, int y,
 372                           int WXUNUSED(view_y1), int WXUNUSED(view_y2),
 373                           wxHtmlRenderingInfo& info)
 374 {
 375 #if 0 // useful for debugging
 376     dc.DrawRectangle(x+m_PosX,y+m_PosY,m_Width,m_Height);
 377 #endif
 378
 379     bool drawSelectionAfterCell = false;
 380
 381     if ( info.GetState().GetSelectionState() == wxHTML_SEL_CHANGING )
 382     {
 383         // Selection changing, we must draw the word piecewise:
 384         wxHtmlSelection *s = info.GetSelection();
 385         wxString txt;
 386         int w, h;
 387         int ofs = 0;
 388
 389         wxPoint priv = (this == s->GetFromCell()) ?
 390                            s->GetFromPrivPos() : s->GetToPrivPos();
 391
 392         // NB: this is quite a hack: in order to compute selection boundaries
 393         //     (in word's characters) we must know current font, which is only
 394         //     possible inside rendering code. Therefore we update the
 395         //     information here and store it in wxHtmlSelection so that
 396         //     ConvertToText can use it later:
 397         if ( priv == wxDefaultPosition )
 398         {
 399             SetSelectionPrivPos(dc, s);
 400             priv = (this == s->GetFromCell()) ?
 401                     s->GetFromPrivPos() : s->GetToPrivPos();
 402         }
 403
 404         int part1 = priv.x;
 405         int part2 = priv.y;
 406
 407         if ( part1 > 0 )
 408         {
 409             txt = m_Word.Mid(0, part1);
 410             dc.DrawText(txt, x + m_PosX, y + m_PosY);
 411             dc.GetTextExtent(txt, &w, &h);
 412             ofs += w;
 413         }
 414
 415         SwitchSelState(dc, info, true);
 416
 417         txt = m_Word.Mid(part1, part2-part1);
 418         dc.DrawText(txt, ofs + x + m_PosX, y + m_PosY);
 419
 420         if ( (size_t)part2 < m_Word.length() )
 421         {
 422             dc.GetTextExtent(txt, &w, &h);
 423             ofs += w;
 424             SwitchSelState(dc, info, false);
 425             txt = m_Word.Mid(part2);
 426             dc.DrawText(txt, ofs + x + m_PosX, y + m_PosY);
 427         }
 428         else
 429             drawSelectionAfterCell = true;
 430     }
 431     else
 432     {
 433         wxHtmlSelectionState selstate = info.GetState().GetSelectionState();
 434         // Not changing selection state, draw the word in single mode:
 435         if ( selstate != wxHTML_SEL_OUT &&
 436              dc.GetBackgroundMode() != wxSOLID )
 437         {
 438             SwitchSelState(dc, info, true);
 439         }
 440         else if ( selstate == wxHTML_SEL_OUT &&
 441                   dc.GetBackgroundMode() == wxSOLID )
 442         {
 443             SwitchSelState(dc, info, false);
 444         }
 445         dc.DrawText(m_Word, x + m_PosX, y + m_PosY);
 446         drawSelectionAfterCell = (selstate != wxHTML_SEL_OUT);
 447     }
 448
 449     // NB: If the text is justified then there is usually some free space
 450     //     between adjacent cells and drawing the selection only onto cells
 451     //     would result in ugly unselected spaces. The code below detects
 452     //     this special case and renders the selection *outside* the sell,
 453     //     too.
 454     if ( m_Parent->GetAlignHor() == wxHTML_ALIGN_JUSTIFY &&
 455          drawSelectionAfterCell )
 456     {
 457         wxHtmlCell *nextCell = m_Next;
 458         while ( nextCell && nextCell->IsFormattingCell() )
 459             nextCell = nextCell->GetNext();
 460         if ( nextCell )
 461         {
 462             int nextX = nextCell->GetPosX();
 463             if ( m_PosX + m_Width < nextX )
 464             {
 465                 dc.SetBrush(dc.GetBackground());
 466                 dc.SetPen(*wxTRANSPARENT_PEN);
 467                 dc.DrawRectangle(x + m_PosX + m_Width, y + m_PosY,
 468                                  nextX - m_PosX - m_Width, m_Height);
 469             }
 470         }
 471     }
 472 }
 473
 474
 475 wxString wxHtmlWordCell::ConvertToText(wxHtmlSelection *s) const
 476 {
 477     if ( s && (this == s->GetFromCell() || this == s->GetToCell()) )
 478     {
 479         wxPoint priv = this == s->GetFromCell() ? s->GetFromPrivPos()
 480                                                 : s->GetToPrivPos();
 481
 482         // VZ: we may be called before we had a chance to re-render ourselves
 483         //     and in this case GetFrom/ToPrivPos() is not set yet -- assume
 484         //     that this only happens in case of a double/triple click (which
 485         //     seems to be the case now) and so it makes sense to select the
 486         //     entire contents of the cell in this case
 487         //
 488         // TODO: but this really needs to be fixed in some better way later...
 489         if ( priv != wxDefaultPosition )
 490         {
 491             int part1 = priv.x;
 492             int part2 = priv.y;
 493             return m_Word.Mid(part1, part2-part1);
 494         }
 495         //else: return the whole word below
 496     }
 497
 498     return m_Word;
 499 }
 500
 501 wxCursor wxHtmlWordCell::GetCursor() const
 502 {
 503     if ( !GetLink() )
 504     {
 505         if ( !gs_cursorText )
 506             gs_cursorText = new wxCursor(wxCURSOR_IBEAM);
 507         return *gs_cursorText;
 508     }
 509     else
 510         return wxHtmlCell::GetCursor();
 511 }
 512
 513
 514 //-----------------------------------------------------------------------------
 515 // wxHtmlContainerCell
 516 //-----------------------------------------------------------------------------
 517
 518
 519 wxHtmlContainerCell::wxHtmlContainerCell(wxHtmlContainerCell *parent) : wxHtmlCell()
 520 {
 521     m_Cells = m_LastCell = NULL;
 522     m_Parent = parent;
 523     if (m_Parent) m_Parent->InsertCell(this);
 524     m_AlignHor = wxHTML_ALIGN_LEFT;
 525     m_AlignVer = wxHTML_ALIGN_BOTTOM;
 526     m_IndentLeft = m_IndentRight = m_IndentTop = m_IndentBottom = 0;
 527     m_WidthFloat = 100; m_WidthFloatUnits = wxHTML_UNITS_PERCENT;
 528     m_UseBkColour = FALSE;
 529     m_UseBorder = FALSE;
 530     m_MinHeight = 0;
 531     m_MinHeightAlign = wxHTML_ALIGN_TOP;
 532     m_LastLayout = -1;
 533 }
 534
 535 wxHtmlContainerCell::~wxHtmlContainerCell()
 536 {
 537     wxHtmlCell *cell = m_Cells;
 538     while ( cell )
 539     {
 540         wxHtmlCell *cellNext = cell->GetNext();
 541         delete cell;
 542         cell = cellNext;
 543     }
 544 }
 545
 546
 547
 548 void wxHtmlContainerCell::SetIndent(int i, int what, int units)
 549 {
 550     int val = (units == wxHTML_UNITS_PIXELS) ? i : -i;
 551     if (what & wxHTML_INDENT_LEFT) m_IndentLeft = val;
 552     if (what & wxHTML_INDENT_RIGHT) m_IndentRight = val;
 553     if (what & wxHTML_INDENT_TOP) m_IndentTop = val;
 554     if (what & wxHTML_INDENT_BOTTOM) m_IndentBottom = val;
 555     m_LastLayout = -1;
 556 }
 557
 558
 559
 560 int wxHtmlContainerCell::GetIndent(int ind) const
 561 {
 562     if (ind & wxHTML_INDENT_LEFT) return m_IndentLeft;
 563     else if (ind & wxHTML_INDENT_RIGHT) return m_IndentRight;
 564     else if (ind & wxHTML_INDENT_TOP) return m_IndentTop;
 565     else if (ind & wxHTML_INDENT_BOTTOM) return m_IndentBottom;
 566     else return -1; /* BUG! Should not be called... */
 567 }
 568
 569
 570
 571
 572 int wxHtmlContainerCell::GetIndentUnits(int ind) const
 573 {
 574     bool p = FALSE;
 575     if (ind & wxHTML_INDENT_LEFT) p = m_IndentLeft < 0;
 576     else if (ind & wxHTML_INDENT_RIGHT) p = m_IndentRight < 0;
 577     else if (ind & wxHTML_INDENT_TOP) p = m_IndentTop < 0;
 578     else if (ind & wxHTML_INDENT_BOTTOM) p = m_IndentBottom < 0;
 579     if (p) return wxHTML_UNITS_PERCENT;
 580     else return wxHTML_UNITS_PIXELS;
 581 }
 582
 583
 584
 585 bool wxHtmlContainerCell::AdjustPagebreak(int *pagebreak, int* known_pagebreaks, int number_of_pages) const
 586 {
 587     if (!m_CanLiveOnPagebreak)
 588         return wxHtmlCell::AdjustPagebreak(pagebreak, known_pagebreaks, number_of_pages);
 589
 590     else
 591     {
 592         wxHtmlCell *c = GetFirstChild();
 593         bool rt = FALSE;
 594         int pbrk = *pagebreak - m_PosY;
 595
 596         while (c)
 597         {
 598             if (c->AdjustPagebreak(&pbrk, known_pagebreaks, number_of_pages))
 599                 rt = TRUE;
 600             c = c->GetNext();
 601         }
 602         if (rt)
 603             *pagebreak = pbrk + m_PosY;
 604         return rt;
 605     }
 606 }
 607
 608
 609
 610 void wxHtmlContainerCell::Layout(int w)
 611 {
 612     wxHtmlCell::Layout(w);
 613
 614     if (m_LastLayout == w) return;
 615
 616     // VS: Any attempt to layout with negative or zero width leads to hell,
 617     // but we can't ignore such attempts completely, since it sometimes
 618     // happen (e.g. when trying how small a table can be). The best thing we
 619     // can do is to set the width of child cells to zero
 620     if (w < 1)
 621     {
 622        m_Width = 0;
 623        for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
 624             cell->Layout(0);
 625             // this does two things: it recursively calls this code on all
 626             // child contrainers and resets children's position to (0,0)
 627        return;
 628     }
 629
 630     wxHtmlCell *cell = m_Cells, *line = m_Cells;
 631     wxHtmlCell *nextCell;
 632     long xpos = 0, ypos = m_IndentTop;
 633     int xdelta = 0, ybasicpos = 0, ydiff;
 634     int s_width, nextWordWidth, s_indent;
 635     int ysizeup = 0, ysizedown = 0;
 636     int MaxLineWidth = 0;
 637     int xcnt = 0;
 638
 639
 640     /*
 641
 642     WIDTH ADJUSTING :
 643
 644     */
 645
 646     if (m_WidthFloatUnits == wxHTML_UNITS_PERCENT)
 647     {
 648         if (m_WidthFloat < 0) m_Width = (100 + m_WidthFloat) * w / 100;
 649         else m_Width = m_WidthFloat * w / 100;
 650     }
 651     else
 652     {
 653         if (m_WidthFloat < 0) m_Width = w + m_WidthFloat;
 654         else m_Width = m_WidthFloat;
 655     }
 656
 657     if (m_Cells)
 658     {
 659         int l = (m_IndentLeft < 0) ? (-m_IndentLeft * m_Width / 100) : m_IndentLeft;
 660         int r = (m_IndentRight < 0) ? (-m_IndentRight * m_Width / 100) : m_IndentRight;
 661         for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
 662             cell->Layout(m_Width - (l + r));
 663     }
 664
 665     /*
 666
 667     LAYOUTING :
 668
 669     */
 670
 671     // adjust indentation:
 672     s_indent = (m_IndentLeft < 0) ? (-m_IndentLeft * m_Width / 100) : m_IndentLeft;
 673     s_width = m_Width - s_indent - ((m_IndentRight < 0) ? (-m_IndentRight * m_Width / 100) : m_IndentRight);
 674
 675     // my own layouting:
 676     while (cell != NULL)
 677     {
 678         switch (m_AlignVer)
 679         {
 680             case wxHTML_ALIGN_TOP :      ybasicpos = 0; break;
 681             case wxHTML_ALIGN_BOTTOM :   ybasicpos = - cell->GetHeight(); break;
 682             case wxHTML_ALIGN_CENTER :   ybasicpos = - cell->GetHeight() / 2; break;
 683         }
 684         ydiff = cell->GetHeight() + ybasicpos;
 685
 686         if (cell->GetDescent() + ydiff > ysizedown) ysizedown = cell->GetDescent() + ydiff;
 687         if (ybasicpos + cell->GetDescent() < -ysizeup) ysizeup = - (ybasicpos + cell->GetDescent());
 688
 689         // layout nonbreakable run of cells:
 690         cell->SetPos(xpos, ybasicpos + cell->GetDescent());
 691         xpos += cell->GetWidth();
 692         cell = cell->GetNext();
 693         xcnt++;
 694
 695         // compute length of the next word that would be added:
 696         nextWordWidth = 0;
 697         if (cell)
 698         {
 699             nextCell = cell;
 700             do
 701             {
 702                 nextWordWidth += nextCell->GetWidth();
 703                 nextCell = nextCell->GetNext();
 704             } while (nextCell && !nextCell->IsLinebreakAllowed());
 705         }
 706
 707         // force new line if occured:
 708         if ((cell == NULL) ||
 709             (xpos + nextWordWidth > s_width && cell->IsLinebreakAllowed()))
 710         {
 711             if (xpos > MaxLineWidth) MaxLineWidth = xpos;
 712             if (ysizeup < 0) ysizeup = 0;
 713             if (ysizedown < 0) ysizedown = 0;
 714             switch (m_AlignHor) {
 715                 case wxHTML_ALIGN_LEFT :
 716                 case wxHTML_ALIGN_JUSTIFY :
 717                          xdelta = 0;
 718                          break;
 719                 case wxHTML_ALIGN_RIGHT :
 720                          xdelta = 0 + (s_width - xpos);
 721                          break;
 722                 case wxHTML_ALIGN_CENTER :
 723                          xdelta = 0 + (s_width - xpos) / 2;
 724                          break;
 725             }
 726             if (xdelta < 0) xdelta = 0;
 727             xdelta += s_indent;
 728
 729             ypos += ysizeup;
 730
 731             if (m_AlignHor != wxHTML_ALIGN_JUSTIFY || cell == NULL)
 732                 while (line != cell)
 733                 {
 734                     line->SetPos(line->GetPosX() + xdelta,
 735                                    ypos + line->GetPosY());
 736                     line = line->GetNext();
 737                 }
 738             else
 739             {
 740                 int counter = 0;
 741                 int step = (s_width - xpos);
 742                 if (step < 0) step = 0;
 743                 xcnt--;
 744                 if (xcnt > 0) while (line != cell)
 745                 {
 746                     line->SetPos(line->GetPosX() + s_indent +
 747                                    (counter++ * step / xcnt),
 748                                    ypos + line->GetPosY());
 749                     line = line->GetNext();
 750                 }
 751                 xcnt++;
 752             }
 753
 754             ypos += ysizedown;
 755             xpos = xcnt = 0;
 756             ysizeup = ysizedown = 0;
 757             line = cell;
 758         }
 759     }
 760
 761     // setup height & width, depending on container layout:
 762     m_Height = ypos + (ysizedown + ysizeup) + m_IndentBottom;
 763
 764     if (m_Height < m_MinHeight)
 765     {
 766         if (m_MinHeightAlign != wxHTML_ALIGN_TOP)
 767         {
 768             int diff = m_MinHeight - m_Height;
 769             if (m_MinHeightAlign == wxHTML_ALIGN_CENTER) diff /= 2;
 770             cell = m_Cells;
 771             while (cell)
 772             {
 773                 cell->SetPos(cell->GetPosX(), cell->GetPosY() + diff);
 774                 cell = cell->GetNext();
 775             }
 776         }
 777         m_Height = m_MinHeight;
 778     }
 779
 780     MaxLineWidth += s_indent + ((m_IndentRight < 0) ? (-m_IndentRight * m_Width / 100) : m_IndentRight);
 781     if (m_Width < MaxLineWidth) m_Width = MaxLineWidth;
 782
 783     m_LastLayout = w;
 784 }
 785
 786 void wxHtmlContainerCell::UpdateRenderingStatePre(wxHtmlRenderingInfo& info,
 787                                                   wxHtmlCell *cell) const
 788 {
 789     wxHtmlSelection *s = info.GetSelection();
 790     if (!s) return;
 791     if (s->GetFromCell() == cell || s->GetToCell() == cell)
 792     {
 793         info.GetState().SetSelectionState(wxHTML_SEL_CHANGING);
 794     }
 795 }
 796
 797 void wxHtmlContainerCell::UpdateRenderingStatePost(wxHtmlRenderingInfo& info,
 798                                                    wxHtmlCell *cell) const
 799 {
 800     wxHtmlSelection *s = info.GetSelection();
 801     if (!s) return;
 802     if (s->GetToCell() == cell)
 803         info.GetState().SetSelectionState(wxHTML_SEL_OUT);
 804     else if (s->GetFromCell() == cell)
 805         info.GetState().SetSelectionState(wxHTML_SEL_IN);
 806 }
 807
 808 #define mMin(a, b) (((a) < (b)) ? (a) : (b))
 809 #define mMax(a, b) (((a) < (b)) ? (b) : (a))
 810
 811 void wxHtmlContainerCell::Draw(wxDC& dc, int x, int y, int view_y1, int view_y2,
 812                                wxHtmlRenderingInfo& info)
 813 {
 814     // container visible, draw it:
 815     if ((y + m_PosY <= view_y2) && (y + m_PosY + m_Height > view_y1))
 816     {
 817         if (m_UseBkColour)
 818         {
 819             wxBrush myb = wxBrush(m_BkColour, wxSOLID);
 820
 821             int real_y1 = mMax(y + m_PosY, view_y1);
 822             int real_y2 = mMin(y + m_PosY + m_Height - 1, view_y2);
 823
 824             dc.SetBrush(myb);
 825             dc.SetPen(*wxTRANSPARENT_PEN);
 826             dc.DrawRectangle(x + m_PosX, real_y1, m_Width, real_y2 - real_y1 + 1);
 827         }
 828
 829         if (m_UseBorder)
 830         {
 831             wxPen mypen1(m_BorderColour1, 1, wxSOLID);
 832             wxPen mypen2(m_BorderColour2, 1, wxSOLID);
 833
 834             dc.SetPen(mypen1);
 835             dc.DrawLine(x + m_PosX, y + m_PosY, x + m_PosX, y + m_PosY + m_Height - 1);
 836             dc.DrawLine(x + m_PosX, y + m_PosY, x + m_PosX + m_Width, y + m_PosY);
 837             dc.SetPen(mypen2);
 838             dc.DrawLine(x + m_PosX + m_Width - 1, y + m_PosY, x + m_PosX +  m_Width - 1, y + m_PosY + m_Height - 1);
 839             dc.DrawLine(x + m_PosX, y + m_PosY + m_Height - 1, x + m_PosX + m_Width, y + m_PosY + m_Height - 1);
 840         }
 841
 842         if (m_Cells)
 843         {
 844             // draw container's contents:
 845             for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
 846             {
 847                 UpdateRenderingStatePre(info, cell);
 848                 cell->Draw(dc,
 849                            x + m_PosX, y + m_PosY, view_y1, view_y2,
 850                            info);
 851                 UpdateRenderingStatePost(info, cell);
 852             }
 853         }
 854     }
 855     // container invisible, just proceed font+color changing:
 856     else
 857     {
 858         DrawInvisible(dc, x, y, info);
 859     }
 860 }
 861
 862
 863
 864 void wxHtmlContainerCell::DrawInvisible(wxDC& dc, int x, int y,
 865                                         wxHtmlRenderingInfo& info)
 866 {
 867     if (m_Cells)
 868     {
 869         for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
 870         {
 871             UpdateRenderingStatePre(info, cell);
 872             cell->DrawInvisible(dc, x + m_PosX, y + m_PosY, info);
 873             UpdateRenderingStatePost(info, cell);
 874         }
 875     }
 876 }
 877
 878
 879 wxColour wxHtmlContainerCell::GetBackgroundColour()
 880 {
 881     if (m_UseBkColour)
 882         return m_BkColour;
 883     else
 884         return wxNullColour;
 885 }
 886
 887
 888
 889 wxHtmlLinkInfo *wxHtmlContainerCell::GetLink(int x, int y) const
 890 {
 891     wxHtmlCell *cell = FindCellByPos(x, y);
 892
 893     // VZ: I don't know if we should pass absolute or relative coords to
 894     //     wxHtmlCell::GetLink()? As the base class version just ignores them
 895     //     anyhow, it hardly matters right now but should still be clarified
 896     return cell ? cell->GetLink(x, y) : NULL;
 897 }
 898
 899
 900
 901 void wxHtmlContainerCell::InsertCell(wxHtmlCell *f)
 902 {
 903     if (!m_Cells) m_Cells = m_LastCell = f;
 904     else
 905     {
 906         m_LastCell->SetNext(f);
 907         m_LastCell = f;
 908         if (m_LastCell) while (m_LastCell->GetNext()) m_LastCell = m_LastCell->GetNext();
 909     }
 910     f->SetParent(this);
 911     m_LastLayout = -1;
 912 }
 913
 914
 915
 916 void wxHtmlContainerCell::SetAlign(const wxHtmlTag& tag)
 917 {
 918     if (tag.HasParam(wxT("ALIGN")))
 919     {
 920         wxString alg = tag.GetParam(wxT("ALIGN"));
 921         alg.MakeUpper();
 922         if (alg == wxT("CENTER"))
 923             SetAlignHor(wxHTML_ALIGN_CENTER);
 924         else if (alg == wxT("LEFT"))
 925             SetAlignHor(wxHTML_ALIGN_LEFT);
 926         else if (alg == wxT("JUSTIFY"))
 927             SetAlignHor(wxHTML_ALIGN_JUSTIFY);
 928         else if (alg == wxT("RIGHT"))
 929             SetAlignHor(wxHTML_ALIGN_RIGHT);
 930         m_LastLayout = -1;
 931     }
 932 }
 933
 934
 935
 936 void wxHtmlContainerCell::SetWidthFloat(const wxHtmlTag& tag, double pixel_scale)
 937 {
 938     if (tag.HasParam(wxT("WIDTH")))
 939     {
 940         int wdi;
 941         wxString wd = tag.GetParam(wxT("WIDTH"));
 942
 943         if (wd[wd.Length()-1] == wxT('%'))
 944         {
 945             wxSscanf(wd.c_str(), wxT("%i%%"), &wdi);
 946             SetWidthFloat(wdi, wxHTML_UNITS_PERCENT);
 947         }
 948         else
 949         {
 950             wxSscanf(wd.c_str(), wxT("%i"), &wdi);
 951             SetWidthFloat((int)(pixel_scale * (double)wdi), wxHTML_UNITS_PIXELS);
 952         }
 953         m_LastLayout = -1;
 954     }
 955 }
 956
 957
 958
 959 const wxHtmlCell* wxHtmlContainerCell::Find(int condition, const void* param) const
 960 {
 961     if (m_Cells)
 962     {
 963         const wxHtmlCell *r = NULL;
 964
 965         for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
 966         {
 967             r = cell->Find(condition, param);
 968             if (r) return r;
 969         }
 970     }
 971     return NULL;
 972 }
 973
 974
 975 wxHtmlCell *wxHtmlContainerCell::FindCellByPos(wxCoord x, wxCoord y,
 976                                                unsigned flags) const
 977 {
 978     if ( flags & wxHTML_FIND_EXACT )
 979     {
 980         for ( const wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext() )
 981         {
 982             int cx = cell->GetPosX(),
 983                 cy = cell->GetPosY();
 984
 985             if ( (cx <= x) && (cx + cell->GetWidth() > x) &&
 986                  (cy <= y) && (cy + cell->GetHeight() > y) )
 987             {
 988                 return cell->FindCellByPos(x - cx, y - cy, flags);
 989             }
 990         }
 991     }
 992     else if ( flags & wxHTML_FIND_NEAREST_AFTER )
 993     {
 994         wxHtmlCell *c;
 995         for ( const wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext() )
 996         {
 997             if ( cell->IsFormattingCell() )
 998                 continue;
 999             int cellY = cell->GetPosY();
1000             if (!( y < cellY || (y < cellY + cell->GetHeight() &&
1001                                  x < cell->GetPosX() + cell->GetWidth()) ))
1002                 continue;
1003
1004             c = cell->FindCellByPos(x - cell->GetPosX(), y - cellY, flags);
1005             if (c) return c;
1006         }
1007     }
1008     else if ( flags & wxHTML_FIND_NEAREST_BEFORE )
1009     {
1010         wxHtmlCell *c2, *c = NULL;
1011         for ( const wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext() )
1012         {
1013             if ( cell->IsFormattingCell() )
1014                 continue;
1015             int cellY = cell->GetPosY();
1016             if (!( cellY + cell->GetHeight() <= y ||
1017                    (y >= cellY && x >= cell->GetPosX()) ))
1018                 break;
1019             c2 = cell->FindCellByPos(x - cell->GetPosX(), y - cellY, flags);
1020             if (c2)
1021                 c = c2;
1022         }
1023         if (c) return c;
1024     }
1025
1026     return NULL;
1027 }
1028
1029
1030 void wxHtmlContainerCell::OnMouseClick(wxWindow *parent, int x, int y, const wxMouseEvent& event)
1031 {
1032     wxHtmlCell *cell = FindCellByPos(x, y);
1033     if ( cell )
1034         cell->OnMouseClick(parent, x, y, event);
1035 }
1036
1037
1038
1039 wxHtmlCell *wxHtmlContainerCell::GetFirstTerminal() const
1040 {
1041     if ( m_Cells )
1042     {
1043         wxHtmlCell *c2;
1044         for (wxHtmlCell *c = m_Cells; c; c = c->GetNext())
1045         {
1046             c2 = c->GetFirstTerminal();
1047             if ( c2 )
1048                 return c2;
1049         }
1050     }
1051     return NULL;
1052 }
1053
1054 wxHtmlCell *wxHtmlContainerCell::GetLastTerminal() const
1055 {
1056     if ( m_Cells )
1057     {
1058         // most common case first:
1059         wxHtmlCell *c = m_LastCell->GetLastTerminal();
1060         if ( c )
1061             return c;
1062
1063         wxHtmlCell *c2 = NULL;
1064         for (c = m_Cells; c; c = c->GetNext())
1065             c2 = c->GetLastTerminal();
1066         return c2;
1067     }
1068     else
1069         return NULL;
1070 }
1071
1072
1073
1074
1075 // --------------------------------------------------------------------------
1076 // wxHtmlColourCell
1077 // --------------------------------------------------------------------------
1078
1079 void wxHtmlColourCell::Draw(wxDC& dc,
1080                             int x, int y,
1081                             int WXUNUSED(view_y1), int WXUNUSED(view_y2),
1082                             wxHtmlRenderingInfo& info)
1083 {
1084     DrawInvisible(dc, x, y, info);
1085 }
1086
1087 void wxHtmlColourCell::DrawInvisible(wxDC& dc,
1088                                      int WXUNUSED(x), int WXUNUSED(y),
1089                                      wxHtmlRenderingInfo& info)
1090 {
1091     wxHtmlRenderingState& state = info.GetState();
1092     if (m_Flags & wxHTML_CLR_FOREGROUND)
1093     {
1094         state.SetFgColour(m_Colour);
1095         if (state.GetSelectionState() != wxHTML_SEL_IN)
1096             dc.SetTextForeground(m_Colour);
1097         else
1098             dc.SetTextForeground(
1099                     info.GetStyle().GetSelectedTextColour(m_Colour));
1100     }
1101     if (m_Flags & wxHTML_CLR_BACKGROUND)
1102     {
1103         state.SetBgColour(m_Colour);
1104         if (state.GetSelectionState() != wxHTML_SEL_IN)
1105         {
1106             dc.SetTextBackground(m_Colour);
1107             dc.SetBackground(wxBrush(m_Colour, wxSOLID));
1108         }
1109         else
1110         {
1111             wxColour c = info.GetStyle().GetSelectedTextBgColour(m_Colour);
1112             dc.SetTextBackground(c);
1113             dc.SetBackground(wxBrush(c, wxSOLID));
1114         }
1115     }
1116 }
1117
1118
1119
1120
1121 // ---------------------------------------------------------------------------
1122 // wxHtmlFontCell
1123 // ---------------------------------------------------------------------------
1124
1125 void wxHtmlFontCell::Draw(wxDC& dc,
1126                           int WXUNUSED(x), int WXUNUSED(y),
1127                           int WXUNUSED(view_y1), int WXUNUSED(view_y2),
1128                           wxHtmlRenderingInfo& WXUNUSED(info))
1129 {
1130     dc.SetFont(m_Font);
1131 }
1132
1133 void wxHtmlFontCell::DrawInvisible(wxDC& dc, int WXUNUSED(x), int WXUNUSED(y),
1134                                    wxHtmlRenderingInfo& WXUNUSED(info))
1135 {
1136     dc.SetFont(m_Font);
1137 }
1138
1139
1140
1141
1142
1143
1144
1145
1146 // ---------------------------------------------------------------------------
1147 // wxHtmlWidgetCell
1148 // ---------------------------------------------------------------------------
1149
1150 wxHtmlWidgetCell::wxHtmlWidgetCell(wxWindow *wnd, int w)
1151 {
1152     int sx, sy;
1153     m_Wnd = wnd;
1154     m_Wnd->GetSize(&sx, &sy);
1155     m_Width = sx, m_Height = sy;
1156     m_WidthFloat = w;
1157 }
1158
1159
1160 void wxHtmlWidgetCell::Draw(wxDC& WXUNUSED(dc),
1161                             int WXUNUSED(x), int WXUNUSED(y),
1162                             int WXUNUSED(view_y1), int WXUNUSED(view_y2),
1163                             wxHtmlRenderingInfo& WXUNUSED(info))
1164 {
1165     int absx = 0, absy = 0, stx, sty;
1166     wxHtmlCell *c = this;
1167
1168     while (c)
1169     {
1170         absx += c->GetPosX();
1171         absy += c->GetPosY();
1172         c = c->GetParent();
1173     }
1174
1175     ((wxScrolledWindow*)(m_Wnd->GetParent()))->GetViewStart(&stx, &sty);
1176     m_Wnd->SetSize(absx - wxHTML_SCROLL_STEP * stx, absy  - wxHTML_SCROLL_STEP * sty, m_Width, m_Height);
1177 }
1178
1179
1180
1181 void wxHtmlWidgetCell::DrawInvisible(wxDC& WXUNUSED(dc),
1182                                      int WXUNUSED(x), int WXUNUSED(y),
1183                                      wxHtmlRenderingInfo& WXUNUSED(info))
1184 {
1185     int absx = 0, absy = 0, stx, sty;
1186     wxHtmlCell *c = this;
1187
1188     while (c)
1189     {
1190         absx += c->GetPosX();
1191         absy += c->GetPosY();
1192         c = c->GetParent();
1193     }
1194
1195     ((wxScrolledWindow*)(m_Wnd->GetParent()))->GetViewStart(&stx, &sty);
1196     m_Wnd->SetSize(absx - wxHTML_SCROLL_STEP * stx, absy  - wxHTML_SCROLL_STEP * sty, m_Width, m_Height);
1197 }
1198
1199
1200
1201 void wxHtmlWidgetCell::Layout(int w)
1202 {
1203     if (m_WidthFloat != 0)
1204     {
1205         m_Width = (w * m_WidthFloat) / 100;
1206         m_Wnd->SetSize(m_Width, m_Height);
1207     }
1208
1209     wxHtmlCell::Layout(w);
1210 }
1211
1212
1213
1214 // ----------------------------------------------------------------------------
1215 // wxHtmlTerminalCellsInterator
1216 // ----------------------------------------------------------------------------
1217
1218 const wxHtmlCell* wxHtmlTerminalCellsInterator::operator++()
1219 {
1220     if ( !m_pos )
1221         return NULL;
1222
1223     do
1224     {
1225         if ( m_pos == m_to )
1226         {
1227             m_pos = NULL;
1228             return NULL;
1229         }
1230
1231         if ( m_pos->GetNext() )
1232             m_pos = m_pos->GetNext();
1233         else
1234         {
1235             // we must go up the hierarchy until we reach container where this
1236             // is not the last child, and then go down to first terminal cell:
1237             while ( m_pos->GetNext() == NULL )
1238             {
1239                 m_pos = m_pos->GetParent();
1240                 if ( !m_pos )
1241                     return NULL;
1242             }
1243             m_pos = m_pos->GetNext();
1244         }
1245         while ( m_pos->GetFirstChild() != NULL )
1246             m_pos = m_pos->GetFirstChild();
1247     } while ( !m_pos->IsTerminalCell() );
1248
1249     return m_pos;
1250 }
1251
1252
1253
1254
1255
1256
1257
1258 //-----------------------------------------------------------------------------
1259 // Cleanup
1260 //-----------------------------------------------------------------------------
1261
1262 class wxHtmlCellModule: public wxModule
1263 {
1264 DECLARE_DYNAMIC_CLASS(wxHtmlCellModule)
1265 public:
1266     wxHtmlCellModule() : wxModule() {}
1267     bool OnInit() { return true; }
1268     void OnExit()
1269     {
1270         wxDELETE(gs_cursorLink);
1271         wxDELETE(gs_cursorText);
1272     }
1273 };
1274
1275 IMPLEMENT_DYNAMIC_CLASS(wxHtmlCellModule, wxModule)
1276
1277 #endif