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 void wxHtmlCell::GetHorizontalConstraints(int *left, int *right) const
 162 {
 163     if (left)
 164         *left = m_PosX;
 165     if (right)
 166         *right = m_PosX + m_Width;
 167 }
 168
 169
 170
 171 const wxHtmlCell* wxHtmlCell::Find(int WXUNUSED(condition), const void* WXUNUSED(param)) const
 172 {
 173     return NULL;
 174 }
 175
 176
 177 wxHtmlCell *wxHtmlCell::FindCellByPos(wxCoord x, wxCoord y,
 178                                       unsigned flags) const
 179 {
 180     if ( x >= 0 && x < m_Width && y >= 0 && y < m_Height )
 181     {
 182         return wxConstCast(this, wxHtmlCell);
 183     }
 184     else
 185     {
 186         if ((flags & wxHTML_FIND_NEAREST_AFTER) &&
 187                 (y < 0 || (y == 0 && x <= 0)))
 188             return wxConstCast(this, wxHtmlCell);
 189         else if ((flags & wxHTML_FIND_NEAREST_BEFORE) &&
 190                 (y > m_Height-1 || (y == m_Height-1 && x >= m_Width)))
 191             return wxConstCast(this, wxHtmlCell);
 192         else
 193             return NULL;
 194     }
 195 }
 196
 197
 198 wxPoint wxHtmlCell::GetAbsPos() const
 199 {
 200     wxPoint p(m_PosX, m_PosY);
 201     for (wxHtmlCell *parent = m_Parent; parent; parent = parent->m_Parent)
 202     {
 203         p.x += parent->m_PosX;
 204         p.y += parent->m_PosY;
 205     }
 206     return p;
 207 }
 208
 209 unsigned wxHtmlCell::GetDepth() const
 210 {
 211     unsigned d = 0;
 212     for (wxHtmlCell *p = m_Parent; p; p = p->m_Parent)
 213         d++;
 214     return d;
 215 }
 216
 217 bool wxHtmlCell::IsBefore(wxHtmlCell *cell) const
 218 {
 219     const wxHtmlCell *c1 = this;
 220     const wxHtmlCell *c2 = cell;
 221     unsigned d1 = GetDepth();
 222     unsigned d2 = cell->GetDepth();
 223
 224     if ( d1 > d2 )
 225         for (; d1 != d2; d1-- )
 226             c1 = c1->m_Parent;
 227     else if ( d1 < d2 )
 228         for (; d1 != d2; d2-- )
 229             c2 = c2->m_Parent;
 230
 231     if ( cell == this )
 232         return true;
 233
 234     while ( c1 && c2 )
 235     {
 236         if ( c1->m_Parent == c2->m_Parent )
 237         {
 238             while ( c1 )
 239             {
 240                 if ( c1 == c2 )
 241                     return true;
 242                 c1 = c1->GetNext();
 243             }
 244             return false;
 245         }
 246         else
 247         {
 248             c1 = c1->m_Parent;
 249             c2 = c2->m_Parent;
 250         }
 251     }
 252
 253     wxFAIL_MSG(_T("Cells are in different trees"));
 254     return false;
 255 }
 256
 257
 258 //-----------------------------------------------------------------------------
 259 // wxHtmlWordCell
 260 //-----------------------------------------------------------------------------
 261
 262 wxHtmlWordCell::wxHtmlWordCell(const wxString& word, wxDC& dc) : wxHtmlCell()
 263 {
 264     m_Word = word;
 265     dc.GetTextExtent(m_Word, &m_Width, &m_Height, &m_Descent);
 266     SetCanLiveOnPagebreak(FALSE);
 267 }
 268
 269
 270 // Splits m_Word into up to three parts according to selection, returns
 271 // substring before, in and after selection and the points (in relative coords)
 272 // where s2 and s3 start:
 273 void wxHtmlWordCell::Split(wxDC& dc,
 274                            const wxPoint& selFrom, const wxPoint& selTo,
 275                            unsigned& pos1, unsigned& pos2) const
 276 {
 277     wxPoint pt1 = (selFrom == wxDefaultPosition) ?
 278                    wxDefaultPosition : selFrom - GetAbsPos();
 279     wxPoint pt2 = (selTo == wxDefaultPosition) ?
 280                    wxPoint(m_Width, -1) : selTo - GetAbsPos();
 281
 282     wxCoord charW, charH;
 283     unsigned len = m_Word.length();
 284     unsigned i = 0;
 285     pos1 = 0;
 286
 287     // before selection:
 288     while ( pt1.x > 0 && i < len )
 289     {
 290         dc.GetTextExtent(m_Word[i], &charW, &charH);
 291         pt1.x -= charW;
 292         if ( pt1.x >= 0 )
 293         {
 294             pos1 += charW;
 295             i++;
 296         }
 297     }
 298
 299     // in selection:
 300     unsigned j = i;
 301     pos2 = pos1;
 302     pt2.x -= pos2;
 303     while ( pt2.x > 0 && j < len )
 304     {
 305         dc.GetTextExtent(m_Word[j], &charW, &charH);
 306         pt2.x -= charW;
 307         if ( pt2.x >= 0 )
 308         {
 309             pos2 += charW;
 310             j++;
 311         }
 312     }
 313
 314     pos1 = i;
 315     pos2 = j;
 316 }
 317
 318 void wxHtmlWordCell::SetSelectionPrivPos(wxDC& dc, wxHtmlSelection *s) const
 319 {
 320     unsigned p1, p2;
 321
 322     Split(dc,
 323           this == s->GetFromCell() ? s->GetFromPos() : wxDefaultPosition,
 324           this == s->GetToCell() ? s->GetToPos() : wxDefaultPosition,
 325           p1, p2);
 326
 327     wxPoint p(0, m_Word.length());
 328
 329     if ( this == s->GetFromCell() )
 330         p.x = p1; // selection starts here
 331     if ( this == s->GetToCell() )
 332         p.y = p2; // selection ends here
 333
 334     if ( this == s->GetFromCell() )
 335         s->SetFromPrivPos(p);
 336     if ( this == s->GetToCell() )
 337         s->SetToPrivPos(p);
 338 }
 339
 340
 341 static void SwitchSelState(wxDC& dc, wxHtmlRenderingInfo& info,
 342                            bool toSelection)
 343 {
 344     wxColour fg = info.GetState().GetFgColour();
 345     wxColour bg = info.GetState().GetBgColour();
 346
 347     if ( toSelection )
 348     {
 349         dc.SetBackgroundMode(wxSOLID);
 350         dc.SetTextForeground(info.GetStyle().GetSelectedTextColour(fg));
 351         dc.SetTextBackground(info.GetStyle().GetSelectedTextBgColour(bg));
 352     }
 353     else
 354     {
 355         dc.SetBackgroundMode(wxTRANSPARENT);
 356         dc.SetTextForeground(fg);
 357         dc.SetTextBackground(bg);
 358     }
 359 }
 360
 361
 362 void wxHtmlWordCell::Draw(wxDC& dc, int x, int y,
 363                           int WXUNUSED(view_y1), int WXUNUSED(view_y2),
 364                           wxHtmlRenderingInfo& info)
 365 {
 366 #if 0 // useful for debugging
 367     dc.DrawRectangle(x+m_PosX,y+m_PosY,m_Width,m_Height);
 368 #endif
 369
 370     if ( info.GetState().GetSelectionState() == wxHTML_SEL_CHANGING )
 371     {
 372         // Selection changing, we must draw the word piecewise:
 373         wxHtmlSelection *s = info.GetSelection();
 374         wxString txt;
 375         int w, h;
 376         int ofs = 0;
 377
 378         wxPoint priv = (this == s->GetFromCell()) ?
 379                            s->GetFromPrivPos() : s->GetToPrivPos();
 380
 381         // NB: this is quite a hack: in order to compute selection boundaries
 382         //     (in word's characters) we must know current font, which is only
 383         //     possible inside rendering code. Therefore we update the
 384         //     information here and store it in wxHtmlSelection so that
 385         //     ConvertToText can use it later:
 386         if ( priv == wxDefaultPosition )
 387         {
 388             SetSelectionPrivPos(dc, s);
 389             priv = (this == s->GetFromCell()) ?
 390                     s->GetFromPrivPos() : s->GetToPrivPos();
 391         }
 392
 393         int part1 = priv.x;
 394         int part2 = priv.y;
 395
 396         if ( part1 > 0 )
 397         {
 398             txt = m_Word.Mid(0, part1);
 399             dc.DrawText(txt, x + m_PosX, y + m_PosY);
 400             dc.GetTextExtent(txt, &w, &h);
 401             ofs += w;
 402         }
 403
 404         SwitchSelState(dc, info, true);
 405
 406         txt = m_Word.Mid(part1, part2-part1);
 407         dc.DrawText(txt, ofs + x + m_PosX, y + m_PosY);
 408
 409         if ( (size_t)part2 < m_Word.length() )
 410         {
 411             dc.GetTextExtent(txt, &w, &h);
 412             ofs += w;
 413             SwitchSelState(dc, info, false);
 414             txt = m_Word.Mid(part2);
 415             dc.DrawText(txt, ofs + x + m_PosX, y + m_PosY);
 416         }
 417     }
 418     else
 419     {
 420         // Not changing selection state, draw the word in single mode:
 421
 422         if ( info.GetState().GetSelectionState() != wxHTML_SEL_OUT &&
 423              dc.GetBackgroundMode() != wxSOLID )
 424         {
 425             SwitchSelState(dc, info, true);
 426         }
 427         else if ( info.GetState().GetSelectionState() == wxHTML_SEL_OUT &&
 428                   dc.GetBackgroundMode() == wxSOLID )
 429         {
 430             SwitchSelState(dc, info, false);
 431         }
 432         dc.DrawText(m_Word, x + m_PosX, y + m_PosY);
 433     }
 434 }
 435
 436
 437 wxString wxHtmlWordCell::ConvertToText(wxHtmlSelection *s) const
 438 {
 439     if ( s && (this == s->GetFromCell() || this == s->GetToCell()) )
 440     {
 441         wxPoint priv = this == s->GetFromCell() ? s->GetFromPrivPos()
 442                                                 : s->GetToPrivPos();
 443
 444         // VZ: we may be called before we had a chance to re-render ourselves
 445         //     and in this case GetFrom/ToPrivPos() is not set yet -- assume
 446         //     that this only happens in case of a double/triple click (which
 447         //     seems to be the case now) and so it makes sense to select the
 448         //     entire contents of the cell in this case
 449         //
 450         // TODO: but this really needs to be fixed in some better way later...
 451         if ( priv != wxDefaultPosition )
 452         {
 453             int part1 = priv.x;
 454             int part2 = priv.y;
 455             return m_Word.Mid(part1, part2-part1);
 456         }
 457         //else: return the whole word below
 458     }
 459
 460     return m_Word;
 461 }
 462
 463 wxCursor wxHtmlWordCell::GetCursor() const
 464 {
 465     if ( !GetLink() )
 466     {
 467         if ( !gs_cursorText )
 468             gs_cursorText = new wxCursor(wxCURSOR_IBEAM);
 469         return *gs_cursorText;
 470     }
 471     else
 472         return wxHtmlCell::GetCursor();
 473 }
 474
 475
 476 //-----------------------------------------------------------------------------
 477 // wxHtmlContainerCell
 478 //-----------------------------------------------------------------------------
 479
 480
 481 wxHtmlContainerCell::wxHtmlContainerCell(wxHtmlContainerCell *parent) : wxHtmlCell()
 482 {
 483     m_Cells = m_LastCell = NULL;
 484     m_Parent = parent;
 485     if (m_Parent) m_Parent->InsertCell(this);
 486     m_AlignHor = wxHTML_ALIGN_LEFT;
 487     m_AlignVer = wxHTML_ALIGN_BOTTOM;
 488     m_IndentLeft = m_IndentRight = m_IndentTop = m_IndentBottom = 0;
 489     m_WidthFloat = 100; m_WidthFloatUnits = wxHTML_UNITS_PERCENT;
 490     m_UseBkColour = FALSE;
 491     m_UseBorder = FALSE;
 492     m_MinHeight = 0;
 493     m_MinHeightAlign = wxHTML_ALIGN_TOP;
 494     m_LastLayout = -1;
 495 }
 496
 497 wxHtmlContainerCell::~wxHtmlContainerCell()
 498 {
 499     wxHtmlCell *cell = m_Cells;
 500     while ( cell )
 501     {
 502         wxHtmlCell *cellNext = cell->GetNext();
 503         delete cell;
 504         cell = cellNext;
 505     }
 506 }
 507
 508
 509
 510 void wxHtmlContainerCell::SetIndent(int i, int what, int units)
 511 {
 512     int val = (units == wxHTML_UNITS_PIXELS) ? i : -i;
 513     if (what & wxHTML_INDENT_LEFT) m_IndentLeft = val;
 514     if (what & wxHTML_INDENT_RIGHT) m_IndentRight = val;
 515     if (what & wxHTML_INDENT_TOP) m_IndentTop = val;
 516     if (what & wxHTML_INDENT_BOTTOM) m_IndentBottom = val;
 517     m_LastLayout = -1;
 518 }
 519
 520
 521
 522 int wxHtmlContainerCell::GetIndent(int ind) const
 523 {
 524     if (ind & wxHTML_INDENT_LEFT) return m_IndentLeft;
 525     else if (ind & wxHTML_INDENT_RIGHT) return m_IndentRight;
 526     else if (ind & wxHTML_INDENT_TOP) return m_IndentTop;
 527     else if (ind & wxHTML_INDENT_BOTTOM) return m_IndentBottom;
 528     else return -1; /* BUG! Should not be called... */
 529 }
 530
 531
 532
 533
 534 int wxHtmlContainerCell::GetIndentUnits(int ind) const
 535 {
 536     bool p = FALSE;
 537     if (ind & wxHTML_INDENT_LEFT) p = m_IndentLeft < 0;
 538     else if (ind & wxHTML_INDENT_RIGHT) p = m_IndentRight < 0;
 539     else if (ind & wxHTML_INDENT_TOP) p = m_IndentTop < 0;
 540     else if (ind & wxHTML_INDENT_BOTTOM) p = m_IndentBottom < 0;
 541     if (p) return wxHTML_UNITS_PERCENT;
 542     else return wxHTML_UNITS_PIXELS;
 543 }
 544
 545
 546
 547 bool wxHtmlContainerCell::AdjustPagebreak(int *pagebreak, int* known_pagebreaks, int number_of_pages) const
 548 {
 549     if (!m_CanLiveOnPagebreak)
 550         return wxHtmlCell::AdjustPagebreak(pagebreak, known_pagebreaks, number_of_pages);
 551
 552     else
 553     {
 554         wxHtmlCell *c = GetFirstChild();
 555         bool rt = FALSE;
 556         int pbrk = *pagebreak - m_PosY;
 557
 558         while (c)
 559         {
 560             if (c->AdjustPagebreak(&pbrk, known_pagebreaks, number_of_pages))
 561                 rt = TRUE;
 562             c = c->GetNext();
 563         }
 564         if (rt)
 565             *pagebreak = pbrk + m_PosY;
 566         return rt;
 567     }
 568 }
 569
 570
 571
 572 void wxHtmlContainerCell::Layout(int w)
 573 {
 574     wxHtmlCell::Layout(w);
 575
 576     if (m_LastLayout == w) return;
 577
 578     // VS: Any attempt to layout with negative or zero width leads to hell,
 579     // but we can't ignore such attempts completely, since it sometimes
 580     // happen (e.g. when trying how small a table can be). The best thing we
 581     // can do is to set the width of child cells to zero
 582     if (w < 1)
 583     {
 584        m_Width = 0;
 585        for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
 586             cell->Layout(0);
 587             // this does two things: it recursively calls this code on all
 588             // child contrainers and resets children's position to (0,0)
 589        return;
 590     }
 591
 592     wxHtmlCell *cell = m_Cells, *line = m_Cells;
 593     long xpos = 0, ypos = m_IndentTop;
 594     int xdelta = 0, ybasicpos = 0, ydiff;
 595     int s_width, s_indent;
 596     int ysizeup = 0, ysizedown = 0;
 597     int MaxLineWidth = 0;
 598     int xcnt = 0;
 599
 600
 601     /*
 602
 603     WIDTH ADJUSTING :
 604
 605     */
 606
 607     if (m_WidthFloatUnits == wxHTML_UNITS_PERCENT)
 608     {
 609         if (m_WidthFloat < 0) m_Width = (100 + m_WidthFloat) * w / 100;
 610         else m_Width = m_WidthFloat * w / 100;
 611     }
 612     else
 613     {
 614         if (m_WidthFloat < 0) m_Width = w + m_WidthFloat;
 615         else m_Width = m_WidthFloat;
 616     }
 617
 618     if (m_Cells)
 619     {
 620         int l = (m_IndentLeft < 0) ? (-m_IndentLeft * m_Width / 100) : m_IndentLeft;
 621         int r = (m_IndentRight < 0) ? (-m_IndentRight * m_Width / 100) : m_IndentRight;
 622         for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
 623             cell->Layout(m_Width - (l + r));
 624     }
 625
 626     /*
 627
 628     LAYOUTING :
 629
 630     */
 631
 632     // adjust indentation:
 633     s_indent = (m_IndentLeft < 0) ? (-m_IndentLeft * m_Width / 100) : m_IndentLeft;
 634     s_width = m_Width - s_indent - ((m_IndentRight < 0) ? (-m_IndentRight * m_Width / 100) : m_IndentRight);
 635
 636     // my own layouting:
 637     while (cell != NULL)
 638     {
 639         switch (m_AlignVer)
 640         {
 641             case wxHTML_ALIGN_TOP :      ybasicpos = 0; break;
 642             case wxHTML_ALIGN_BOTTOM :   ybasicpos = - cell->GetHeight(); break;
 643             case wxHTML_ALIGN_CENTER :   ybasicpos = - cell->GetHeight() / 2; break;
 644         }
 645         ydiff = cell->GetHeight() + ybasicpos;
 646
 647         if (cell->GetDescent() + ydiff > ysizedown) ysizedown = cell->GetDescent() + ydiff;
 648         if (ybasicpos + cell->GetDescent() < -ysizeup) ysizeup = - (ybasicpos + cell->GetDescent());
 649
 650         cell->SetPos(xpos, ybasicpos + cell->GetDescent());
 651         xpos += cell->GetWidth();
 652         cell = cell->GetNext();
 653         xcnt++;
 654
 655         // force new line if occured:
 656         if ((cell == NULL) || (xpos + cell->GetWidth() > s_width))
 657         {
 658             if (xpos > MaxLineWidth) MaxLineWidth = xpos;
 659             if (ysizeup < 0) ysizeup = 0;
 660             if (ysizedown < 0) ysizedown = 0;
 661             switch (m_AlignHor) {
 662                 case wxHTML_ALIGN_LEFT :
 663                 case wxHTML_ALIGN_JUSTIFY :
 664                          xdelta = 0;
 665                          break;
 666                 case wxHTML_ALIGN_RIGHT :
 667                          xdelta = 0 + (s_width - xpos);
 668                          break;
 669                 case wxHTML_ALIGN_CENTER :
 670                          xdelta = 0 + (s_width - xpos) / 2;
 671                          break;
 672             }
 673             if (xdelta < 0) xdelta = 0;
 674             xdelta += s_indent;
 675
 676             ypos += ysizeup;
 677
 678             if (m_AlignHor != wxHTML_ALIGN_JUSTIFY || cell == NULL)
 679                 while (line != cell)
 680                 {
 681                     line->SetPos(line->GetPosX() + xdelta,
 682                                    ypos + line->GetPosY());
 683                     line = line->GetNext();
 684                 }
 685             else
 686             {
 687                 int counter = 0;
 688                 int step = (s_width - xpos);
 689                 if (step < 0) step = 0;
 690                 xcnt--;
 691                 if (xcnt > 0) while (line != cell)
 692                 {
 693                     line->SetPos(line->GetPosX() + s_indent +
 694                                    (counter++ * step / xcnt),
 695                                    ypos + line->GetPosY());
 696                     line = line->GetNext();
 697                 }
 698                 xcnt++;
 699             }
 700
 701             ypos += ysizedown;
 702             xpos = xcnt = 0;
 703             ysizeup = ysizedown = 0;
 704             line = cell;
 705         }
 706     }
 707
 708     // setup height & width, depending on container layout:
 709     m_Height = ypos + (ysizedown + ysizeup) + m_IndentBottom;
 710
 711     if (m_Height < m_MinHeight)
 712     {
 713         if (m_MinHeightAlign != wxHTML_ALIGN_TOP)
 714         {
 715             int diff = m_MinHeight - m_Height;
 716             if (m_MinHeightAlign == wxHTML_ALIGN_CENTER) diff /= 2;
 717             cell = m_Cells;
 718             while (cell)
 719             {
 720                 cell->SetPos(cell->GetPosX(), cell->GetPosY() + diff);
 721                 cell = cell->GetNext();
 722             }
 723         }
 724         m_Height = m_MinHeight;
 725     }
 726
 727     MaxLineWidth += s_indent + ((m_IndentRight < 0) ? (-m_IndentRight * m_Width / 100) : m_IndentRight);
 728     if (m_Width < MaxLineWidth) m_Width = MaxLineWidth;
 729
 730     m_LastLayout = w;
 731 }
 732
 733 void wxHtmlContainerCell::UpdateRenderingStatePre(wxHtmlRenderingInfo& info,
 734                                                   wxHtmlCell *cell) const
 735 {
 736     wxHtmlSelection *s = info.GetSelection();
 737     if (!s) return;
 738     if (s->GetFromCell() == cell || s->GetToCell() == cell)
 739     {
 740         info.GetState().SetSelectionState(wxHTML_SEL_CHANGING);
 741     }
 742 }
 743
 744 void wxHtmlContainerCell::UpdateRenderingStatePost(wxHtmlRenderingInfo& info,
 745                                                    wxHtmlCell *cell) const
 746 {
 747     wxHtmlSelection *s = info.GetSelection();
 748     if (!s) return;
 749     if (s->GetToCell() == cell)
 750         info.GetState().SetSelectionState(wxHTML_SEL_OUT);
 751     else if (s->GetFromCell() == cell)
 752         info.GetState().SetSelectionState(wxHTML_SEL_IN);
 753 }
 754
 755 #define mMin(a, b) (((a) < (b)) ? (a) : (b))
 756 #define mMax(a, b) (((a) < (b)) ? (b) : (a))
 757
 758 void wxHtmlContainerCell::Draw(wxDC& dc, int x, int y, int view_y1, int view_y2,
 759                                wxHtmlRenderingInfo& info)
 760 {
 761     // container visible, draw it:
 762     if ((y + m_PosY <= view_y2) && (y + m_PosY + m_Height > view_y1))
 763     {
 764         if (m_UseBkColour)
 765         {
 766             wxBrush myb = wxBrush(m_BkColour, wxSOLID);
 767
 768             int real_y1 = mMax(y + m_PosY, view_y1);
 769             int real_y2 = mMin(y + m_PosY + m_Height - 1, view_y2);
 770
 771             dc.SetBrush(myb);
 772             dc.SetPen(*wxTRANSPARENT_PEN);
 773             dc.DrawRectangle(x + m_PosX, real_y1, m_Width, real_y2 - real_y1 + 1);
 774         }
 775
 776         if (m_UseBorder)
 777         {
 778             wxPen mypen1(m_BorderColour1, 1, wxSOLID);
 779             wxPen mypen2(m_BorderColour2, 1, wxSOLID);
 780
 781             dc.SetPen(mypen1);
 782             dc.DrawLine(x + m_PosX, y + m_PosY, x + m_PosX, y + m_PosY + m_Height - 1);
 783             dc.DrawLine(x + m_PosX, y + m_PosY, x + m_PosX + m_Width, y + m_PosY);
 784             dc.SetPen(mypen2);
 785             dc.DrawLine(x + m_PosX + m_Width - 1, y + m_PosY, x + m_PosX +  m_Width - 1, y + m_PosY + m_Height - 1);
 786             dc.DrawLine(x + m_PosX, y + m_PosY + m_Height - 1, x + m_PosX + m_Width, y + m_PosY + m_Height - 1);
 787         }
 788
 789         if (m_Cells)
 790         {
 791             // draw container's contents:
 792             for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
 793             {
 794                 UpdateRenderingStatePre(info, cell);
 795                 cell->Draw(dc,
 796                            x + m_PosX, y + m_PosY, view_y1, view_y2,
 797                            info);
 798                 UpdateRenderingStatePost(info, cell);
 799             }
 800         }
 801     }
 802     // container invisible, just proceed font+color changing:
 803     else
 804     {
 805         DrawInvisible(dc, x, y, info);
 806     }
 807 }
 808
 809
 810
 811 void wxHtmlContainerCell::DrawInvisible(wxDC& dc, int x, int y,
 812                                         wxHtmlRenderingInfo& info)
 813 {
 814     if (m_Cells)
 815     {
 816         for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
 817         {
 818             UpdateRenderingStatePre(info, cell);
 819             cell->DrawInvisible(dc, x + m_PosX, y + m_PosY, info);
 820             UpdateRenderingStatePost(info, cell);
 821         }
 822     }
 823 }
 824
 825
 826 wxColour wxHtmlContainerCell::GetBackgroundColour()
 827 {
 828     if (m_UseBkColour)
 829         return m_BkColour;
 830     else
 831         return wxNullColour;
 832 }
 833
 834
 835
 836 wxHtmlLinkInfo *wxHtmlContainerCell::GetLink(int x, int y) const
 837 {
 838     wxHtmlCell *cell = FindCellByPos(x, y);
 839
 840     // VZ: I don't know if we should pass absolute or relative coords to
 841     //     wxHtmlCell::GetLink()? As the base class version just ignores them
 842     //     anyhow, it hardly matters right now but should still be clarified
 843     return cell ? cell->GetLink(x, y) : NULL;
 844 }
 845
 846
 847
 848 void wxHtmlContainerCell::InsertCell(wxHtmlCell *f)
 849 {
 850     if (!m_Cells) m_Cells = m_LastCell = f;
 851     else
 852     {
 853         m_LastCell->SetNext(f);
 854         m_LastCell = f;
 855         if (m_LastCell) while (m_LastCell->GetNext()) m_LastCell = m_LastCell->GetNext();
 856     }
 857     f->SetParent(this);
 858     m_LastLayout = -1;
 859 }
 860
 861
 862
 863 void wxHtmlContainerCell::SetAlign(const wxHtmlTag& tag)
 864 {
 865     if (tag.HasParam(wxT("ALIGN")))
 866     {
 867         wxString alg = tag.GetParam(wxT("ALIGN"));
 868         alg.MakeUpper();
 869         if (alg == wxT("CENTER"))
 870             SetAlignHor(wxHTML_ALIGN_CENTER);
 871         else if (alg == wxT("LEFT"))
 872             SetAlignHor(wxHTML_ALIGN_LEFT);
 873         else if (alg == wxT("JUSTIFY"))
 874             SetAlignHor(wxHTML_ALIGN_JUSTIFY);
 875         else if (alg == wxT("RIGHT"))
 876             SetAlignHor(wxHTML_ALIGN_RIGHT);
 877         m_LastLayout = -1;
 878     }
 879 }
 880
 881
 882
 883 void wxHtmlContainerCell::SetWidthFloat(const wxHtmlTag& tag, double pixel_scale)
 884 {
 885     if (tag.HasParam(wxT("WIDTH")))
 886     {
 887         int wdi;
 888         wxString wd = tag.GetParam(wxT("WIDTH"));
 889
 890         if (wd[wd.Length()-1] == wxT('%'))
 891         {
 892             wxSscanf(wd.c_str(), wxT("%i%%"), &wdi);
 893             SetWidthFloat(wdi, wxHTML_UNITS_PERCENT);
 894         }
 895         else
 896         {
 897             wxSscanf(wd.c_str(), wxT("%i"), &wdi);
 898             SetWidthFloat((int)(pixel_scale * (double)wdi), wxHTML_UNITS_PIXELS);
 899         }
 900         m_LastLayout = -1;
 901     }
 902 }
 903
 904
 905
 906 const wxHtmlCell* wxHtmlContainerCell::Find(int condition, const void* param) const
 907 {
 908     if (m_Cells)
 909     {
 910         const wxHtmlCell *r = NULL;
 911
 912         for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
 913         {
 914             r = cell->Find(condition, param);
 915             if (r) return r;
 916         }
 917     }
 918     return NULL;
 919 }
 920
 921
 922 wxHtmlCell *wxHtmlContainerCell::FindCellByPos(wxCoord x, wxCoord y,
 923                                                unsigned flags) const
 924 {
 925     if ( flags & wxHTML_FIND_EXACT )
 926     {
 927         for ( const wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext() )
 928         {
 929             int cx = cell->GetPosX(),
 930                 cy = cell->GetPosY();
 931
 932             if ( (cx <= x) && (cx + cell->GetWidth() > x) &&
 933                  (cy <= y) && (cy + cell->GetHeight() > y) )
 934             {
 935                 return cell->FindCellByPos(x - cx, y - cy, flags);
 936             }
 937         }
 938     }
 939     else if ( flags & wxHTML_FIND_NEAREST_AFTER )
 940     {
 941         wxHtmlCell *c;
 942         int y2;
 943         for ( const wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext() )
 944         {
 945             y2 = cell->GetPosY() + cell->GetHeight() - 1;
 946             if (y2 < y || (y2 == y && cell->GetPosX()+cell->GetWidth()-1 < x))
 947                 continue;
 948             c = cell->FindCellByPos(x - cell->GetPosX(), y - cell->GetPosY(),
 949                                     flags);
 950             if (c) return c;
 951         }
 952     }
 953     else if ( flags & wxHTML_FIND_NEAREST_BEFORE )
 954     {
 955         wxHtmlCell *c2, *c = NULL;
 956         for ( const wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext() )
 957         {
 958             if (cell->GetPosY() > y ||
 959                     (cell->GetPosY() == y && cell->GetPosX() > x))
 960                 break;
 961             c2 = cell->FindCellByPos(x - cell->GetPosX(), y - cell->GetPosY(),
 962                                      flags);
 963             if (c2)
 964                 c = c2;
 965         }
 966         if (c) return c;
 967     }
 968
 969     return NULL;
 970 }
 971
 972
 973 void wxHtmlContainerCell::OnMouseClick(wxWindow *parent, int x, int y, const wxMouseEvent& event)
 974 {
 975     wxHtmlCell *cell = FindCellByPos(x, y);
 976     if ( cell )
 977         cell->OnMouseClick(parent, x, y, event);
 978 }
 979
 980
 981
 982 void wxHtmlContainerCell::GetHorizontalConstraints(int *left, int *right) const
 983 {
 984     int cleft = m_PosX + m_Width, cright = m_PosX; // worst case
 985     int l, r;
 986
 987     for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
 988     {
 989         cell->GetHorizontalConstraints(&l, &r);
 990         if (l < cleft)
 991             cleft = l;
 992         if (r > cright)
 993             cright = r;
 994     }
 995
 996     cleft -= (m_IndentLeft < 0) ? (-m_IndentLeft * m_Width / 100) : m_IndentLeft;
 997     cright += (m_IndentRight < 0) ? (-m_IndentRight * m_Width / 100) : m_IndentRight;
 998
 999     if (left)
1000         *left = cleft;
1001     if (right)
1002         *right = cright;
1003 }
1004
1005
1006 wxHtmlCell *wxHtmlContainerCell::GetFirstTerminal() const
1007 {
1008     if ( m_Cells )
1009     {
1010         wxHtmlCell *c2;
1011         for (wxHtmlCell *c = m_Cells; c; c = c->GetNext())
1012         {
1013             c2 = c->GetFirstTerminal();
1014             if ( c2 )
1015                 return c2;
1016         }
1017     }
1018     return NULL;
1019 }
1020
1021 wxHtmlCell *wxHtmlContainerCell::GetLastTerminal() const
1022 {
1023     if ( m_Cells )
1024     {
1025         // most common case first:
1026         wxHtmlCell *c = m_LastCell->GetLastTerminal();
1027         if ( c )
1028             return c;
1029
1030         wxHtmlCell *c2 = NULL;
1031         for (c = m_Cells; c; c = c->GetNext())
1032             c2 = c->GetLastTerminal();
1033         return c2;
1034     }
1035     else
1036         return NULL;
1037 }
1038
1039
1040
1041
1042 // --------------------------------------------------------------------------
1043 // wxHtmlColourCell
1044 // --------------------------------------------------------------------------
1045
1046 void wxHtmlColourCell::Draw(wxDC& dc,
1047                             int x, int y,
1048                             int WXUNUSED(view_y1), int WXUNUSED(view_y2),
1049                             wxHtmlRenderingInfo& info)
1050 {
1051     DrawInvisible(dc, x, y, info);
1052 }
1053
1054 void wxHtmlColourCell::DrawInvisible(wxDC& dc,
1055                                      int WXUNUSED(x), int WXUNUSED(y),
1056                                      wxHtmlRenderingInfo& info)
1057 {
1058     wxHtmlRenderingState& state = info.GetState();
1059     if (m_Flags & wxHTML_CLR_FOREGROUND)
1060     {
1061         state.SetFgColour(m_Colour);
1062         if (state.GetSelectionState() != wxHTML_SEL_IN)
1063             dc.SetTextForeground(m_Colour);
1064         else
1065             dc.SetTextForeground(
1066                     info.GetStyle().GetSelectedTextColour(m_Colour));
1067     }
1068     if (m_Flags & wxHTML_CLR_BACKGROUND)
1069     {
1070         state.SetBgColour(m_Colour);
1071         if (state.GetSelectionState() != wxHTML_SEL_IN)
1072             dc.SetTextBackground(m_Colour);
1073         else
1074             dc.SetTextBackground(
1075                     info.GetStyle().GetSelectedTextBgColour(m_Colour));
1076         dc.SetBackground(wxBrush(m_Colour, wxSOLID));
1077     }
1078 }
1079
1080
1081
1082
1083 // ---------------------------------------------------------------------------
1084 // wxHtmlFontCell
1085 // ---------------------------------------------------------------------------
1086
1087 void wxHtmlFontCell::Draw(wxDC& dc,
1088                           int WXUNUSED(x), int WXUNUSED(y),
1089                           int WXUNUSED(view_y1), int WXUNUSED(view_y2),
1090                           wxHtmlRenderingInfo& WXUNUSED(info))
1091 {
1092     dc.SetFont(m_Font);
1093 }
1094
1095 void wxHtmlFontCell::DrawInvisible(wxDC& dc, int WXUNUSED(x), int WXUNUSED(y),
1096                                    wxHtmlRenderingInfo& WXUNUSED(info))
1097 {
1098     dc.SetFont(m_Font);
1099 }
1100
1101
1102
1103
1104
1105
1106
1107
1108 // ---------------------------------------------------------------------------
1109 // wxHtmlWidgetCell
1110 // ---------------------------------------------------------------------------
1111
1112 wxHtmlWidgetCell::wxHtmlWidgetCell(wxWindow *wnd, int w)
1113 {
1114     int sx, sy;
1115     m_Wnd = wnd;
1116     m_Wnd->GetSize(&sx, &sy);
1117     m_Width = sx, m_Height = sy;
1118     m_WidthFloat = w;
1119 }
1120
1121
1122 void wxHtmlWidgetCell::Draw(wxDC& WXUNUSED(dc),
1123                             int WXUNUSED(x), int WXUNUSED(y),
1124                             int WXUNUSED(view_y1), int WXUNUSED(view_y2),
1125                             wxHtmlRenderingInfo& WXUNUSED(info))
1126 {
1127     int absx = 0, absy = 0, stx, sty;
1128     wxHtmlCell *c = this;
1129
1130     while (c)
1131     {
1132         absx += c->GetPosX();
1133         absy += c->GetPosY();
1134         c = c->GetParent();
1135     }
1136
1137     ((wxScrolledWindow*)(m_Wnd->GetParent()))->GetViewStart(&stx, &sty);
1138     m_Wnd->SetSize(absx - wxHTML_SCROLL_STEP * stx, absy  - wxHTML_SCROLL_STEP * sty, m_Width, m_Height);
1139 }
1140
1141
1142
1143 void wxHtmlWidgetCell::DrawInvisible(wxDC& WXUNUSED(dc),
1144                                      int WXUNUSED(x), int WXUNUSED(y),
1145                                      wxHtmlRenderingInfo& WXUNUSED(info))
1146 {
1147     int absx = 0, absy = 0, stx, sty;
1148     wxHtmlCell *c = this;
1149
1150     while (c)
1151     {
1152         absx += c->GetPosX();
1153         absy += c->GetPosY();
1154         c = c->GetParent();
1155     }
1156
1157     ((wxScrolledWindow*)(m_Wnd->GetParent()))->GetViewStart(&stx, &sty);
1158     m_Wnd->SetSize(absx - wxHTML_SCROLL_STEP * stx, absy  - wxHTML_SCROLL_STEP * sty, m_Width, m_Height);
1159 }
1160
1161
1162
1163 void wxHtmlWidgetCell::Layout(int w)
1164 {
1165     if (m_WidthFloat != 0)
1166     {
1167         m_Width = (w * m_WidthFloat) / 100;
1168         m_Wnd->SetSize(m_Width, m_Height);
1169     }
1170
1171     wxHtmlCell::Layout(w);
1172 }
1173
1174
1175
1176 // ----------------------------------------------------------------------------
1177 // wxHtmlTerminalCellsInterator
1178 // ----------------------------------------------------------------------------
1179
1180 const wxHtmlCell* wxHtmlTerminalCellsInterator::operator++()
1181 {
1182     if ( !m_pos )
1183         return NULL;
1184
1185     do
1186     {
1187         if ( m_pos == m_to )
1188         {
1189             m_pos = NULL;
1190             return NULL;
1191         }
1192
1193         if ( m_pos->GetNext() )
1194             m_pos = m_pos->GetNext();
1195         else
1196         {
1197             // we must go up the hierarchy until we reach container where this
1198             // is not the last child, and then go down to first terminal cell:
1199             while ( m_pos->GetNext() == NULL )
1200             {
1201                 m_pos = m_pos->GetParent();
1202                 if ( !m_pos )
1203                     return NULL;
1204             }
1205             m_pos = m_pos->GetNext();
1206         }
1207         while ( m_pos->GetFirstChild() != NULL )
1208             m_pos = m_pos->GetFirstChild();
1209     } while ( !m_pos->IsTerminalCell() );
1210
1211     return m_pos;
1212 }
1213
1214
1215
1216
1217
1218
1219
1220 //-----------------------------------------------------------------------------
1221 // Cleanup
1222 //-----------------------------------------------------------------------------
1223
1224 class wxHtmlCellModule: public wxModule
1225 {
1226 DECLARE_DYNAMIC_CLASS(wxHtmlCellModule)
1227 public:
1228     wxHtmlCellModule() : wxModule() {}
1229     bool OnInit() { return true; }
1230     void OnExit()
1231     {
1232         wxDELETE(gs_cursorLink);
1233         wxDELETE(gs_cursorText);
1234     }
1235 };
1236
1237 IMPLEMENT_DYNAMIC_CLASS(wxHtmlCellModule, wxModule)
1238
1239 #endif