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 <stdlib.h>
  34
  35 //-----------------------------------------------------------------------------
  36 // Helper classes
  37 //-----------------------------------------------------------------------------
  38
  39 void wxHtmlSelection::Set(const wxPoint& fromPos, wxHtmlCell *fromCell,
  40                           const wxPoint& toPos, wxHtmlCell *toCell)
  41 {
  42     m_fromCell = fromCell;
  43     m_toCell = toCell;
  44     m_fromPos = fromPos;
  45     m_toPos = toPos;
  46 }
  47
  48 void wxHtmlSelection::Set(wxHtmlCell *fromCell, wxHtmlCell *toCell)
  49 {
  50     wxPoint p1 = fromCell ? fromCell->GetAbsPos() : wxDefaultPosition;
  51     wxPoint p2 = toCell ? toCell->GetAbsPos() : wxDefaultPosition;
  52     if ( toCell )
  53     {
  54         p2.x += toCell->GetWidth()-1;
  55         p2.y += toCell->GetHeight()-1;
  56     }
  57     Set(p1, fromCell, p2, toCell);
  58 }
  59
  60 wxColour wxDefaultHtmlRenderingStyle::GetSelectedTextColour(
  61                                         const wxColour& WXUNUSED(clr))
  62 {
  63     return wxSystemSettings::GetColour(wxSYS_COLOUR_HIGHLIGHTTEXT);
  64 }
  65
  66 wxColour wxDefaultHtmlRenderingStyle::GetSelectedTextBgColour(
  67                                         const wxColour& WXUNUSED(clr))
  68 {
  69     return wxSystemSettings::GetColour(wxSYS_COLOUR_HIGHLIGHT);
  70 }
  71
  72
  73 //-----------------------------------------------------------------------------
  74 // wxHtmlCell
  75 //-----------------------------------------------------------------------------
  76
  77 wxHtmlCell::wxHtmlCell() : wxObject()
  78 {
  79     m_Next = NULL;
  80     m_Parent = NULL;
  81     m_Width = m_Height = m_Descent = 0;
  82     m_CanLiveOnPagebreak = TRUE;
  83     m_Link = NULL;
  84 }
  85
  86 wxHtmlCell::~wxHtmlCell()
  87 {
  88     delete m_Link;
  89 }
  90
  91
  92 void wxHtmlCell::OnMouseClick(wxWindow *parent, int x, int y,
  93                               const wxMouseEvent& event)
  94 {
  95     wxHtmlLinkInfo *lnk = GetLink(x, y);
  96     if (lnk != NULL)
  97     {
  98         wxHtmlLinkInfo lnk2(*lnk);
  99         lnk2.SetEvent(&event);
 100         lnk2.SetHtmlCell(this);
 101
 102         // note : this cast is legal because parent is *always* wxHtmlWindow
 103         wxStaticCast(parent, wxHtmlWindow)->OnLinkClicked(lnk2);
 104     }
 105 }
 106
 107
 108
 109 bool wxHtmlCell::AdjustPagebreak(int *pagebreak, int* WXUNUSED(known_pagebreaks), int WXUNUSED(number_of_pages)) const
 110 {
 111     if ((!m_CanLiveOnPagebreak) &&
 112                 m_PosY < *pagebreak && m_PosY + m_Height > *pagebreak)
 113     {
 114         *pagebreak = m_PosY;
 115         return TRUE;
 116     }
 117
 118     return FALSE;
 119 }
 120
 121
 122
 123 void wxHtmlCell::SetLink(const wxHtmlLinkInfo& link)
 124 {
 125     if (m_Link) delete m_Link;
 126     m_Link = NULL;
 127     if (link.GetHref() != wxEmptyString)
 128         m_Link = new wxHtmlLinkInfo(link);
 129 }
 130
 131
 132
 133 void wxHtmlCell::Layout(int WXUNUSED(w))
 134 {
 135     SetPos(0, 0);
 136 }
 137
 138
 139
 140 void wxHtmlCell::GetHorizontalConstraints(int *left, int *right) const
 141 {
 142     if (left)
 143         *left = m_PosX;
 144     if (right)
 145         *right = m_PosX + m_Width;
 146 }
 147
 148
 149
 150 const wxHtmlCell* wxHtmlCell::Find(int WXUNUSED(condition), const void* WXUNUSED(param)) const
 151 {
 152     return NULL;
 153 }
 154
 155
 156 wxHtmlCell *wxHtmlCell::FindCellByPos(wxCoord x, wxCoord y,
 157                                       unsigned flags) const
 158 {
 159     if ( x >= 0 && x < m_Width && y >= 0 && y < m_Height )
 160     {
 161         return wxConstCast(this, wxHtmlCell);
 162     }
 163     else
 164     {
 165         if ((flags & wxHTML_FIND_NEAREST_AFTER) &&
 166                 (y < 0 || (y == 0 && x <= 0)))
 167             return wxConstCast(this, wxHtmlCell);
 168         else if ((flags & wxHTML_FIND_NEAREST_BEFORE) &&
 169                 (y > m_Height-1 || (y == m_Height-1 && x >= m_Width)))
 170             return wxConstCast(this, wxHtmlCell);
 171         else
 172             return NULL;
 173     }
 174 }
 175
 176
 177 wxPoint wxHtmlCell::GetAbsPos() const
 178 {
 179     wxPoint p(m_PosX, m_PosY);
 180     for (wxHtmlCell *parent = m_Parent; parent; parent = parent->m_Parent)
 181     {
 182         p.x += parent->m_PosX;
 183         p.y += parent->m_PosY;
 184     }
 185     return p;
 186 }
 187
 188 unsigned wxHtmlCell::GetDepth() const
 189 {
 190     unsigned d = 0;
 191     for (wxHtmlCell *p = m_Parent; p; p = p->m_Parent)
 192         d++;
 193     return d;
 194 }
 195
 196 bool wxHtmlCell::IsBefore(wxHtmlCell *cell) const
 197 {
 198     const wxHtmlCell *c1 = this;
 199     const wxHtmlCell *c2 = cell;
 200     unsigned d1 = GetDepth();
 201     unsigned d2 = cell->GetDepth();
 202
 203     if ( d1 > d2 )
 204         for (; d1 != d2; d1-- )
 205             c1 = c1->m_Parent;
 206     else if ( d1 < d2 )
 207         for (; d1 != d2; d2-- )
 208             c2 = c2->m_Parent;
 209
 210     if ( cell == this )
 211         return true;
 212
 213     while ( c1 && c2 )
 214     {
 215         if ( c1->m_Parent == c2->m_Parent )
 216         {
 217             while ( c1 )
 218             {
 219                 if ( c1 == c2 )
 220                     return true;
 221                 c1 = c1->GetNext();
 222             }
 223             return false;
 224         }
 225         else
 226         {
 227             c1 = c1->m_Parent;
 228             c2 = c2->m_Parent;
 229         }
 230     }
 231
 232     wxFAIL_MSG(_T("Cells are in different trees"));
 233     return false;
 234 }
 235
 236
 237 //-----------------------------------------------------------------------------
 238 // wxHtmlWordCell
 239 //-----------------------------------------------------------------------------
 240
 241 wxHtmlWordCell::wxHtmlWordCell(const wxString& word, wxDC& dc) : wxHtmlCell()
 242 {
 243     m_Word = word;
 244     dc.GetTextExtent(m_Word, &m_Width, &m_Height, &m_Descent);
 245     SetCanLiveOnPagebreak(FALSE);
 246 }
 247
 248
 249 // Splits m_Word into up to three parts according to selection, returns
 250 // substring before, in and after selection and the points (in relative coords)
 251 // where s2 and s3 start:
 252 void wxHtmlWordCell::Split(wxDC& dc,
 253                            const wxPoint& selFrom, const wxPoint& selTo,
 254                            unsigned& pos1, unsigned& pos2) const
 255 {
 256     wxPoint pt1 = (selFrom == wxDefaultPosition) ?
 257                    wxDefaultPosition : selFrom - GetAbsPos();
 258     wxPoint pt2 = (selTo == wxDefaultPosition) ?
 259                    wxPoint(m_Width, -1) : selTo - GetAbsPos();
 260
 261     wxCoord charW, charH;
 262     unsigned len = m_Word.length();
 263     unsigned i = 0;
 264     pos1 = 0;
 265
 266     // before selection:
 267     while ( pt1.x > 0 && i < len )
 268     {
 269         dc.GetTextExtent(m_Word[i], &charW, &charH);
 270         pt1.x -= charW;
 271         if ( pt1.x >= 0 )
 272         {
 273             pos1 += charW;
 274             i++;
 275         }
 276     }
 277
 278     // in selection:
 279     unsigned j = i;
 280     pos2 = pos1;
 281     pt2.x -= pos2;
 282     while ( pt2.x > 0 && j < len )
 283     {
 284         dc.GetTextExtent(m_Word[j], &charW, &charH);
 285         pt2.x -= charW;
 286         if ( pt2.x >= 0 )
 287         {
 288             pos2 += charW;
 289             j++;
 290         }
 291     }
 292
 293     pos1 = i;
 294     pos2 = j;
 295 }
 296
 297 void wxHtmlWordCell::SetSelectionPrivPos(wxDC& dc, wxHtmlSelection *s) const
 298 {
 299     unsigned p1, p2;
 300
 301     Split(dc,
 302           this == s->GetFromCell() ? s->GetFromPos() : wxDefaultPosition,
 303           this == s->GetToCell() ? s->GetToPos() : wxDefaultPosition,
 304           p1, p2);
 305
 306     wxPoint p(0, m_Word.length());
 307
 308     if ( this == s->GetFromCell() )
 309         p.x = p1; // selection starts here
 310     if ( this == s->GetToCell() )
 311         p.y = p2; // selection ends here
 312
 313     if ( this == s->GetFromCell() )
 314         s->SetFromPrivPos(p);
 315     if ( this == s->GetToCell() )
 316         s->SetToPrivPos(p);
 317 }
 318
 319
 320 static void SwitchSelState(wxDC& dc, wxHtmlRenderingInfo& info,
 321                            bool toSelection)
 322 {
 323     wxColour fg = info.GetState().GetFgColour();
 324     wxColour bg = info.GetState().GetBgColour();
 325
 326     if ( toSelection )
 327     {
 328         dc.SetBackgroundMode(wxSOLID);
 329         dc.SetTextForeground(info.GetStyle().GetSelectedTextColour(fg));
 330         dc.SetTextBackground(info.GetStyle().GetSelectedTextBgColour(bg));
 331     }
 332     else
 333     {
 334         dc.SetBackgroundMode(wxTRANSPARENT);
 335         dc.SetTextForeground(fg);
 336         dc.SetTextBackground(bg);
 337     }
 338 }
 339
 340
 341 void wxHtmlWordCell::Draw(wxDC& dc, int x, int y,
 342                           int WXUNUSED(view_y1), int WXUNUSED(view_y2),
 343                           wxHtmlRenderingInfo& info)
 344 {
 345 #if 0 // useful for debugging
 346     dc.DrawRectangle(x+m_PosX,y+m_PosY,m_Width,m_Height);
 347 #endif
 348
 349     if ( info.GetState().GetSelectionState() == wxHTML_SEL_CHANGING )
 350     {
 351         // Selection changing, we must draw the word piecewise:
 352         wxHtmlSelection *s = info.GetSelection();
 353         wxString txt;
 354         int w, h;
 355         int ofs = 0;
 356
 357         wxPoint priv = (this == s->GetFromCell()) ?
 358                            s->GetFromPrivPos() : s->GetToPrivPos();
 359         int part1 = priv.x;
 360         int part2 = priv.y;
 361
 362         if ( part1 > 0 )
 363         {
 364             txt = m_Word.Mid(0, part1);
 365             dc.DrawText(txt, x + m_PosX, y + m_PosY);
 366             dc.GetTextExtent(txt, &w, &h);
 367             ofs += w;
 368         }
 369
 370         SwitchSelState(dc, info, true);
 371
 372         txt = m_Word.Mid(part1, part2-part1);
 373         dc.DrawText(txt, ofs + x + m_PosX, y + m_PosY);
 374
 375         if ( (size_t)part2 < m_Word.length() )
 376         {
 377             dc.GetTextExtent(txt, &w, &h);
 378             ofs += w;
 379             SwitchSelState(dc, info, false);
 380             txt = m_Word.Mid(part2);
 381             dc.DrawText(txt, ofs + x + m_PosX, y + m_PosY);
 382         }
 383     }
 384     else
 385     {
 386         // Not changing selection state, draw the word in single mode:
 387
 388         if ( info.GetState().GetSelectionState() != wxHTML_SEL_OUT &&
 389              dc.GetBackgroundMode() != wxSOLID )
 390         {
 391             SwitchSelState(dc, info, true);
 392         }
 393         else if ( info.GetState().GetSelectionState() == wxHTML_SEL_OUT &&
 394                   dc.GetBackgroundMode() == wxSOLID )
 395         {
 396             SwitchSelState(dc, info, false);
 397         }
 398         dc.DrawText(m_Word, x + m_PosX, y + m_PosY);
 399     }
 400 }
 401
 402
 403 wxString wxHtmlWordCell::ConvertToText(wxHtmlSelection *s) const
 404 {
 405     if ( s && (this == s->GetFromCell() || this == s->GetToCell()) )
 406     {
 407         wxPoint priv = (this == s->GetFromCell()) ?
 408                            s->GetFromPrivPos() : s->GetToPrivPos();
 409         int part1 = priv.x;
 410         int part2 = priv.y;
 411         return m_Word.Mid(part1, part2-part1);
 412     }
 413     else
 414         return m_Word;
 415 }
 416
 417
 418
 419 //-----------------------------------------------------------------------------
 420 // wxHtmlContainerCell
 421 //-----------------------------------------------------------------------------
 422
 423
 424 wxHtmlContainerCell::wxHtmlContainerCell(wxHtmlContainerCell *parent) : wxHtmlCell()
 425 {
 426     m_Cells = m_LastCell = NULL;
 427     m_Parent = parent;
 428     if (m_Parent) m_Parent->InsertCell(this);
 429     m_AlignHor = wxHTML_ALIGN_LEFT;
 430     m_AlignVer = wxHTML_ALIGN_BOTTOM;
 431     m_IndentLeft = m_IndentRight = m_IndentTop = m_IndentBottom = 0;
 432     m_WidthFloat = 100; m_WidthFloatUnits = wxHTML_UNITS_PERCENT;
 433     m_UseBkColour = FALSE;
 434     m_UseBorder = FALSE;
 435     m_MinHeight = 0;
 436     m_MinHeightAlign = wxHTML_ALIGN_TOP;
 437     m_LastLayout = -1;
 438 }
 439
 440 wxHtmlContainerCell::~wxHtmlContainerCell()
 441 {
 442     wxHtmlCell *cell = m_Cells;
 443     while ( cell )
 444     {
 445         wxHtmlCell *cellNext = cell->GetNext();
 446         delete cell;
 447         cell = cellNext;
 448     }
 449 }
 450
 451
 452
 453 void wxHtmlContainerCell::SetIndent(int i, int what, int units)
 454 {
 455     int val = (units == wxHTML_UNITS_PIXELS) ? i : -i;
 456     if (what & wxHTML_INDENT_LEFT) m_IndentLeft = val;
 457     if (what & wxHTML_INDENT_RIGHT) m_IndentRight = val;
 458     if (what & wxHTML_INDENT_TOP) m_IndentTop = val;
 459     if (what & wxHTML_INDENT_BOTTOM) m_IndentBottom = val;
 460     m_LastLayout = -1;
 461 }
 462
 463
 464
 465 int wxHtmlContainerCell::GetIndent(int ind) const
 466 {
 467     if (ind & wxHTML_INDENT_LEFT) return m_IndentLeft;
 468     else if (ind & wxHTML_INDENT_RIGHT) return m_IndentRight;
 469     else if (ind & wxHTML_INDENT_TOP) return m_IndentTop;
 470     else if (ind & wxHTML_INDENT_BOTTOM) return m_IndentBottom;
 471     else return -1; /* BUG! Should not be called... */
 472 }
 473
 474
 475
 476
 477 int wxHtmlContainerCell::GetIndentUnits(int ind) const
 478 {
 479     bool p = FALSE;
 480     if (ind & wxHTML_INDENT_LEFT) p = m_IndentLeft < 0;
 481     else if (ind & wxHTML_INDENT_RIGHT) p = m_IndentRight < 0;
 482     else if (ind & wxHTML_INDENT_TOP) p = m_IndentTop < 0;
 483     else if (ind & wxHTML_INDENT_BOTTOM) p = m_IndentBottom < 0;
 484     if (p) return wxHTML_UNITS_PERCENT;
 485     else return wxHTML_UNITS_PIXELS;
 486 }
 487
 488
 489
 490 bool wxHtmlContainerCell::AdjustPagebreak(int *pagebreak, int* known_pagebreaks, int number_of_pages) const
 491 {
 492     if (!m_CanLiveOnPagebreak)
 493         return wxHtmlCell::AdjustPagebreak(pagebreak, known_pagebreaks, number_of_pages);
 494
 495     else
 496     {
 497         wxHtmlCell *c = GetFirstChild();
 498         bool rt = FALSE;
 499         int pbrk = *pagebreak - m_PosY;
 500
 501         while (c)
 502         {
 503             if (c->AdjustPagebreak(&pbrk, known_pagebreaks, number_of_pages))
 504                 rt = TRUE;
 505             c = c->GetNext();
 506         }
 507         if (rt)
 508             *pagebreak = pbrk + m_PosY;
 509         return rt;
 510     }
 511 }
 512
 513
 514
 515 void wxHtmlContainerCell::Layout(int w)
 516 {
 517     wxHtmlCell::Layout(w);
 518
 519     if (m_LastLayout == w) return;
 520
 521     // VS: Any attempt to layout with negative or zero width leads to hell,
 522     // but we can't ignore such attempts completely, since it sometimes
 523     // happen (e.g. when trying how small a table can be). The best thing we
 524     // can do is to set the width of child cells to zero
 525     if (w < 1)
 526     {
 527        m_Width = 0;
 528        for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
 529             cell->Layout(0);
 530             // this does two things: it recursively calls this code on all
 531             // child contrainers and resets children's position to (0,0)
 532        return;
 533     }
 534
 535     wxHtmlCell *cell = m_Cells, *line = m_Cells;
 536     long xpos = 0, ypos = m_IndentTop;
 537     int xdelta = 0, ybasicpos = 0, ydiff;
 538     int s_width, s_indent;
 539     int ysizeup = 0, ysizedown = 0;
 540     int MaxLineWidth = 0;
 541     int xcnt = 0;
 542
 543
 544     /*
 545
 546     WIDTH ADJUSTING :
 547
 548     */
 549
 550     if (m_WidthFloatUnits == wxHTML_UNITS_PERCENT)
 551     {
 552         if (m_WidthFloat < 0) m_Width = (100 + m_WidthFloat) * w / 100;
 553         else m_Width = m_WidthFloat * w / 100;
 554     }
 555     else
 556     {
 557         if (m_WidthFloat < 0) m_Width = w + m_WidthFloat;
 558         else m_Width = m_WidthFloat;
 559     }
 560
 561     if (m_Cells)
 562     {
 563         int l = (m_IndentLeft < 0) ? (-m_IndentLeft * m_Width / 100) : m_IndentLeft;
 564         int r = (m_IndentRight < 0) ? (-m_IndentRight * m_Width / 100) : m_IndentRight;
 565         for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
 566             cell->Layout(m_Width - (l + r));
 567     }
 568
 569     /*
 570
 571     LAYOUTING :
 572
 573     */
 574
 575     // adjust indentation:
 576     s_indent = (m_IndentLeft < 0) ? (-m_IndentLeft * m_Width / 100) : m_IndentLeft;
 577     s_width = m_Width - s_indent - ((m_IndentRight < 0) ? (-m_IndentRight * m_Width / 100) : m_IndentRight);
 578
 579     // my own layouting:
 580     while (cell != NULL)
 581     {
 582         switch (m_AlignVer)
 583         {
 584             case wxHTML_ALIGN_TOP :      ybasicpos = 0; break;
 585             case wxHTML_ALIGN_BOTTOM :   ybasicpos = - cell->GetHeight(); break;
 586             case wxHTML_ALIGN_CENTER :   ybasicpos = - cell->GetHeight() / 2; break;
 587         }
 588         ydiff = cell->GetHeight() + ybasicpos;
 589
 590         if (cell->GetDescent() + ydiff > ysizedown) ysizedown = cell->GetDescent() + ydiff;
 591         if (ybasicpos + cell->GetDescent() < -ysizeup) ysizeup = - (ybasicpos + cell->GetDescent());
 592
 593         cell->SetPos(xpos, ybasicpos + cell->GetDescent());
 594         xpos += cell->GetWidth();
 595         cell = cell->GetNext();
 596         xcnt++;
 597
 598         // force new line if occured:
 599         if ((cell == NULL) || (xpos + cell->GetWidth() > s_width))
 600         {
 601             if (xpos > MaxLineWidth) MaxLineWidth = xpos;
 602             if (ysizeup < 0) ysizeup = 0;
 603             if (ysizedown < 0) ysizedown = 0;
 604             switch (m_AlignHor) {
 605                 case wxHTML_ALIGN_LEFT :
 606                 case wxHTML_ALIGN_JUSTIFY :
 607                          xdelta = 0;
 608                          break;
 609                 case wxHTML_ALIGN_RIGHT :
 610                          xdelta = 0 + (s_width - xpos);
 611                          break;
 612                 case wxHTML_ALIGN_CENTER :
 613                          xdelta = 0 + (s_width - xpos) / 2;
 614                          break;
 615             }
 616             if (xdelta < 0) xdelta = 0;
 617             xdelta += s_indent;
 618
 619             ypos += ysizeup;
 620
 621             if (m_AlignHor != wxHTML_ALIGN_JUSTIFY || cell == NULL)
 622                 while (line != cell)
 623                 {
 624                     line->SetPos(line->GetPosX() + xdelta,
 625                                    ypos + line->GetPosY());
 626                     line = line->GetNext();
 627                 }
 628             else
 629             {
 630                 int counter = 0;
 631                 int step = (s_width - xpos);
 632                 if (step < 0) step = 0;
 633                 xcnt--;
 634                 if (xcnt > 0) while (line != cell)
 635                 {
 636                     line->SetPos(line->GetPosX() + s_indent +
 637                                    (counter++ * step / xcnt),
 638                                    ypos + line->GetPosY());
 639                     line = line->GetNext();
 640                 }
 641                 xcnt++;
 642             }
 643
 644             ypos += ysizedown;
 645             xpos = xcnt = 0;
 646             ysizeup = ysizedown = 0;
 647             line = cell;
 648         }
 649     }
 650
 651     // setup height & width, depending on container layout:
 652     m_Height = ypos + (ysizedown + ysizeup) + m_IndentBottom;
 653
 654     if (m_Height < m_MinHeight)
 655     {
 656         if (m_MinHeightAlign != wxHTML_ALIGN_TOP)
 657         {
 658             int diff = m_MinHeight - m_Height;
 659             if (m_MinHeightAlign == wxHTML_ALIGN_CENTER) diff /= 2;
 660             cell = m_Cells;
 661             while (cell)
 662             {
 663                 cell->SetPos(cell->GetPosX(), cell->GetPosY() + diff);
 664                 cell = cell->GetNext();
 665             }
 666         }
 667         m_Height = m_MinHeight;
 668     }
 669
 670     MaxLineWidth += s_indent + ((m_IndentRight < 0) ? (-m_IndentRight * m_Width / 100) : m_IndentRight);
 671     if (m_Width < MaxLineWidth) m_Width = MaxLineWidth;
 672
 673     m_LastLayout = w;
 674 }
 675
 676 void wxHtmlContainerCell::UpdateRenderingStatePre(wxHtmlRenderingInfo& info,
 677                                                   wxHtmlCell *cell) const
 678 {
 679     wxHtmlSelection *s = info.GetSelection();
 680     if (!s) return;
 681     if (s->GetFromCell() == cell || s->GetToCell() == cell)
 682     {
 683         info.GetState().SetSelectionState(wxHTML_SEL_CHANGING);
 684     }
 685 }
 686
 687 void wxHtmlContainerCell::UpdateRenderingStatePost(wxHtmlRenderingInfo& info,
 688                                                    wxHtmlCell *cell) const
 689 {
 690     wxHtmlSelection *s = info.GetSelection();
 691     if (!s) return;
 692     if (s->GetToCell() == cell)
 693         info.GetState().SetSelectionState(wxHTML_SEL_OUT);
 694     else if (s->GetFromCell() == cell)
 695         info.GetState().SetSelectionState(wxHTML_SEL_IN);
 696 }
 697
 698 #define mMin(a, b) (((a) < (b)) ? (a) : (b))
 699 #define mMax(a, b) (((a) < (b)) ? (b) : (a))
 700
 701 void wxHtmlContainerCell::Draw(wxDC& dc, int x, int y, int view_y1, int view_y2,
 702                                wxHtmlRenderingInfo& info)
 703 {
 704     // container visible, draw it:
 705     if ((y + m_PosY <= view_y2) && (y + m_PosY + m_Height > view_y1))
 706     {
 707         if (m_UseBkColour)
 708         {
 709             wxBrush myb = wxBrush(m_BkColour, wxSOLID);
 710
 711             int real_y1 = mMax(y + m_PosY, view_y1);
 712             int real_y2 = mMin(y + m_PosY + m_Height - 1, view_y2);
 713
 714             dc.SetBrush(myb);
 715             dc.SetPen(*wxTRANSPARENT_PEN);
 716             dc.DrawRectangle(x + m_PosX, real_y1, m_Width, real_y2 - real_y1 + 1);
 717         }
 718
 719         if (m_UseBorder)
 720         {
 721             wxPen mypen1(m_BorderColour1, 1, wxSOLID);
 722             wxPen mypen2(m_BorderColour2, 1, wxSOLID);
 723
 724             dc.SetPen(mypen1);
 725             dc.DrawLine(x + m_PosX, y + m_PosY, x + m_PosX, y + m_PosY + m_Height - 1);
 726             dc.DrawLine(x + m_PosX, y + m_PosY, x + m_PosX + m_Width, y + m_PosY);
 727             dc.SetPen(mypen2);
 728             dc.DrawLine(x + m_PosX + m_Width - 1, y + m_PosY, x + m_PosX +  m_Width - 1, y + m_PosY + m_Height - 1);
 729             dc.DrawLine(x + m_PosX, y + m_PosY + m_Height - 1, x + m_PosX + m_Width, y + m_PosY + m_Height - 1);
 730         }
 731
 732         if (m_Cells)
 733         {
 734             // draw container's contents:
 735             for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
 736             {
 737                 UpdateRenderingStatePre(info, cell);
 738                 cell->Draw(dc,
 739                            x + m_PosX, y + m_PosY, view_y1, view_y2,
 740                            info);
 741                 UpdateRenderingStatePost(info, cell);
 742             }
 743         }
 744     }
 745     // container invisible, just proceed font+color changing:
 746     else
 747     {
 748         DrawInvisible(dc, x, y, info);
 749     }
 750 }
 751
 752
 753
 754 void wxHtmlContainerCell::DrawInvisible(wxDC& dc, int x, int y,
 755                                         wxHtmlRenderingInfo& info)
 756 {
 757     if (m_Cells)
 758     {
 759         for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
 760         {
 761             UpdateRenderingStatePre(info, cell);
 762             cell->DrawInvisible(dc, x + m_PosX, y + m_PosY, info);
 763             UpdateRenderingStatePost(info, cell);
 764         }
 765     }
 766 }
 767
 768
 769 wxColour wxHtmlContainerCell::GetBackgroundColour()
 770 {
 771     if (m_UseBkColour)
 772         return m_BkColour;
 773     else
 774         return wxNullColour;
 775 }
 776
 777
 778
 779 wxHtmlLinkInfo *wxHtmlContainerCell::GetLink(int x, int y) const
 780 {
 781     wxHtmlCell *cell = FindCellByPos(x, y);
 782
 783     // VZ: I don't know if we should pass absolute or relative coords to
 784     //     wxHtmlCell::GetLink()? As the base class version just ignores them
 785     //     anyhow, it hardly matters right now but should still be clarified
 786     return cell ? cell->GetLink(x, y) : NULL;
 787 }
 788
 789
 790
 791 void wxHtmlContainerCell::InsertCell(wxHtmlCell *f)
 792 {
 793     if (!m_Cells) m_Cells = m_LastCell = f;
 794     else
 795     {
 796         m_LastCell->SetNext(f);
 797         m_LastCell = f;
 798         if (m_LastCell) while (m_LastCell->GetNext()) m_LastCell = m_LastCell->GetNext();
 799     }
 800     f->SetParent(this);
 801     m_LastLayout = -1;
 802 }
 803
 804
 805
 806 void wxHtmlContainerCell::SetAlign(const wxHtmlTag& tag)
 807 {
 808     if (tag.HasParam(wxT("ALIGN")))
 809     {
 810         wxString alg = tag.GetParam(wxT("ALIGN"));
 811         alg.MakeUpper();
 812         if (alg == wxT("CENTER"))
 813             SetAlignHor(wxHTML_ALIGN_CENTER);
 814         else if (alg == wxT("LEFT"))
 815             SetAlignHor(wxHTML_ALIGN_LEFT);
 816         else if (alg == wxT("JUSTIFY"))
 817             SetAlignHor(wxHTML_ALIGN_JUSTIFY);
 818         else if (alg == wxT("RIGHT"))
 819             SetAlignHor(wxHTML_ALIGN_RIGHT);
 820         m_LastLayout = -1;
 821     }
 822 }
 823
 824
 825
 826 void wxHtmlContainerCell::SetWidthFloat(const wxHtmlTag& tag, double pixel_scale)
 827 {
 828     if (tag.HasParam(wxT("WIDTH")))
 829     {
 830         int wdi;
 831         wxString wd = tag.GetParam(wxT("WIDTH"));
 832
 833         if (wd[wd.Length()-1] == wxT('%'))
 834         {
 835             wxSscanf(wd.c_str(), wxT("%i%%"), &wdi);
 836             SetWidthFloat(wdi, wxHTML_UNITS_PERCENT);
 837         }
 838         else
 839         {
 840             wxSscanf(wd.c_str(), wxT("%i"), &wdi);
 841             SetWidthFloat((int)(pixel_scale * (double)wdi), wxHTML_UNITS_PIXELS);
 842         }
 843         m_LastLayout = -1;
 844     }
 845 }
 846
 847
 848
 849 const wxHtmlCell* wxHtmlContainerCell::Find(int condition, const void* param) const
 850 {
 851     if (m_Cells)
 852     {
 853         const wxHtmlCell *r = NULL;
 854
 855         for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
 856         {
 857             r = cell->Find(condition, param);
 858             if (r) return r;
 859         }
 860     }
 861     return NULL;
 862 }
 863
 864
 865 wxHtmlCell *wxHtmlContainerCell::FindCellByPos(wxCoord x, wxCoord y,
 866                                                unsigned flags) const
 867 {
 868     if ( flags & wxHTML_FIND_EXACT )
 869     {
 870         for ( const wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext() )
 871         {
 872             int cx = cell->GetPosX(),
 873                 cy = cell->GetPosY();
 874
 875             if ( (cx <= x) && (cx + cell->GetWidth() > x) &&
 876                  (cy <= y) && (cy + cell->GetHeight() > y) )
 877             {
 878                 return cell->FindCellByPos(x - cx, y - cy, flags);
 879             }
 880         }
 881     }
 882     else if ( flags & wxHTML_FIND_NEAREST_AFTER )
 883     {
 884         wxHtmlCell *c;
 885         int y2;
 886         for ( const wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext() )
 887         {
 888             y2 = cell->GetPosY() + cell->GetHeight() - 1;
 889             if (y2 < y || (y2 == y && cell->GetPosX()+cell->GetWidth()-1 < x))
 890                 continue;
 891             c = cell->FindCellByPos(x - cell->GetPosX(), y - cell->GetPosY(),
 892                                     flags);
 893             if (c) return c;
 894         }
 895     }
 896     else if ( flags & wxHTML_FIND_NEAREST_BEFORE )
 897     {
 898         wxHtmlCell *c2, *c = NULL;
 899         for ( const wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext() )
 900         {
 901             if (cell->GetPosY() > y ||
 902                     (cell->GetPosY() == y && cell->GetPosX() > x))
 903                 break;
 904             c2 = cell->FindCellByPos(x - cell->GetPosX(), y - cell->GetPosY(),
 905                                      flags);
 906             if (c2)
 907                 c = c2;
 908         }
 909         if (c) return c;
 910     }
 911
 912     return NULL;
 913 }
 914
 915
 916 void wxHtmlContainerCell::OnMouseClick(wxWindow *parent, int x, int y, const wxMouseEvent& event)
 917 {
 918     wxHtmlCell *cell = FindCellByPos(x, y);
 919     if ( cell )
 920         cell->OnMouseClick(parent, x, y, event);
 921 }
 922
 923
 924
 925 void wxHtmlContainerCell::GetHorizontalConstraints(int *left, int *right) const
 926 {
 927     int cleft = m_PosX + m_Width, cright = m_PosX; // worst case
 928     int l, r;
 929
 930     for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
 931     {
 932         cell->GetHorizontalConstraints(&l, &r);
 933         if (l < cleft)
 934             cleft = l;
 935         if (r > cright)
 936             cright = r;
 937     }
 938
 939     cleft -= (m_IndentLeft < 0) ? (-m_IndentLeft * m_Width / 100) : m_IndentLeft;
 940     cright += (m_IndentRight < 0) ? (-m_IndentRight * m_Width / 100) : m_IndentRight;
 941
 942     if (left)
 943         *left = cleft;
 944     if (right)
 945         *right = cright;
 946 }
 947
 948
 949 wxHtmlCell *wxHtmlContainerCell::GetFirstTerminal() const
 950 {
 951     if ( m_Cells )
 952     {
 953         wxHtmlCell *c2;
 954         for (wxHtmlCell *c = m_Cells; c; c = c->GetNext())
 955         {
 956             c2 = c->GetFirstTerminal();
 957             if ( c2 )
 958                 return c2;
 959         }
 960     }
 961     return NULL;
 962 }
 963
 964 wxHtmlCell *wxHtmlContainerCell::GetLastTerminal() const
 965 {
 966     if ( m_Cells )
 967     {
 968         // most common case first:
 969         wxHtmlCell *c = m_LastCell->GetLastTerminal();
 970         if ( c )
 971             return c;
 972
 973         wxHtmlCell *c2 = NULL;
 974         for (c = m_Cells; c; c = c->GetNext())
 975             c2 = c->GetLastTerminal();
 976         return c2;
 977     }
 978     else
 979         return NULL;
 980 }
 981
 982
 983
 984
 985 // --------------------------------------------------------------------------
 986 // wxHtmlColourCell
 987 // --------------------------------------------------------------------------
 988
 989 void wxHtmlColourCell::Draw(wxDC& dc,
 990                             int x, int y,
 991                             int WXUNUSED(view_y1), int WXUNUSED(view_y2),
 992                             wxHtmlRenderingInfo& info)
 993 {
 994     DrawInvisible(dc, x, y, info);
 995 }
 996
 997 void wxHtmlColourCell::DrawInvisible(wxDC& dc,
 998                                      int WXUNUSED(x), int WXUNUSED(y),
 999                                      wxHtmlRenderingInfo& info)
1000 {
1001     wxHtmlRenderingState& state = info.GetState();
1002     if (m_Flags & wxHTML_CLR_FOREGROUND)
1003     {
1004         state.SetFgColour(m_Colour);
1005         if (state.GetSelectionState() != wxHTML_SEL_IN)
1006             dc.SetTextForeground(m_Colour);
1007     }
1008     if (m_Flags & wxHTML_CLR_BACKGROUND)
1009     {
1010         state.SetBgColour(m_Colour);
1011         if (state.GetSelectionState() != wxHTML_SEL_IN)
1012             dc.SetTextBackground(m_Colour);
1013         dc.SetBackground(wxBrush(m_Colour, wxSOLID));
1014     }
1015 }
1016
1017
1018
1019
1020 // ---------------------------------------------------------------------------
1021 // wxHtmlFontCell
1022 // ---------------------------------------------------------------------------
1023
1024 void wxHtmlFontCell::Draw(wxDC& dc,
1025                           int WXUNUSED(x), int WXUNUSED(y),
1026                           int WXUNUSED(view_y1), int WXUNUSED(view_y2),
1027                           wxHtmlRenderingInfo& WXUNUSED(info))
1028 {
1029     dc.SetFont(m_Font);
1030 }
1031
1032 void wxHtmlFontCell::DrawInvisible(wxDC& dc, int WXUNUSED(x), int WXUNUSED(y),
1033                                    wxHtmlRenderingInfo& WXUNUSED(info))
1034 {
1035     dc.SetFont(m_Font);
1036 }
1037
1038
1039
1040
1041
1042
1043
1044
1045 // ---------------------------------------------------------------------------
1046 // wxHtmlWidgetCell
1047 // ---------------------------------------------------------------------------
1048
1049 wxHtmlWidgetCell::wxHtmlWidgetCell(wxWindow *wnd, int w)
1050 {
1051     int sx, sy;
1052     m_Wnd = wnd;
1053     m_Wnd->GetSize(&sx, &sy);
1054     m_Width = sx, m_Height = sy;
1055     m_WidthFloat = w;
1056 }
1057
1058
1059 void wxHtmlWidgetCell::Draw(wxDC& WXUNUSED(dc),
1060                             int WXUNUSED(x), int WXUNUSED(y),
1061                             int WXUNUSED(view_y1), int WXUNUSED(view_y2),
1062                             wxHtmlRenderingInfo& WXUNUSED(info))
1063 {
1064     int absx = 0, absy = 0, stx, sty;
1065     wxHtmlCell *c = this;
1066
1067     while (c)
1068     {
1069         absx += c->GetPosX();
1070         absy += c->GetPosY();
1071         c = c->GetParent();
1072     }
1073
1074     ((wxScrolledWindow*)(m_Wnd->GetParent()))->GetViewStart(&stx, &sty);
1075     m_Wnd->SetSize(absx - wxHTML_SCROLL_STEP * stx, absy  - wxHTML_SCROLL_STEP * sty, m_Width, m_Height);
1076 }
1077
1078
1079
1080 void wxHtmlWidgetCell::DrawInvisible(wxDC& WXUNUSED(dc),
1081                                      int WXUNUSED(x), int WXUNUSED(y),
1082                                      wxHtmlRenderingInfo& WXUNUSED(info))
1083 {
1084     int absx = 0, absy = 0, stx, sty;
1085     wxHtmlCell *c = this;
1086
1087     while (c)
1088     {
1089         absx += c->GetPosX();
1090         absy += c->GetPosY();
1091         c = c->GetParent();
1092     }
1093
1094     ((wxScrolledWindow*)(m_Wnd->GetParent()))->GetViewStart(&stx, &sty);
1095     m_Wnd->SetSize(absx - wxHTML_SCROLL_STEP * stx, absy  - wxHTML_SCROLL_STEP * sty, m_Width, m_Height);
1096 }
1097
1098
1099
1100 void wxHtmlWidgetCell::Layout(int w)
1101 {
1102     if (m_WidthFloat != 0)
1103     {
1104         m_Width = (w * m_WidthFloat) / 100;
1105         m_Wnd->SetSize(m_Width, m_Height);
1106     }
1107
1108     wxHtmlCell::Layout(w);
1109 }
1110
1111
1112
1113 // ----------------------------------------------------------------------------
1114 // wxHtmlTerminalCellsInterator
1115 // ----------------------------------------------------------------------------
1116
1117 const wxHtmlCell* wxHtmlTerminalCellsInterator::operator++()
1118 {
1119     if ( !m_pos )
1120         return NULL;
1121
1122     do
1123     {
1124         if ( m_pos == m_to )
1125         {
1126             m_pos = NULL;
1127             return NULL;
1128         }
1129
1130         if ( m_pos->GetNext() )
1131             m_pos = m_pos->GetNext();
1132         else
1133         {
1134             // we must go up the hierarchy until we reach container where this
1135             // is not the last child, and then go down to first terminal cell:
1136             while ( m_pos->GetNext() == NULL )
1137             {
1138                 m_pos = m_pos->GetParent();
1139                 if ( !m_pos )
1140                     return NULL;
1141             }
1142             m_pos = m_pos->GetNext();
1143         }
1144         while ( m_pos->GetFirstChild() != NULL )
1145             m_pos = m_pos->GetFirstChild();
1146     } while ( !m_pos->IsTerminalCell() );
1147
1148     return m_pos;
1149 }
1150
1151 #endif