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()) ?
 442                            s->GetFromPrivPos() : s->GetToPrivPos();
 443         int part1 = priv.x;
 444         int part2 = priv.y;
 445         return m_Word.Mid(part1, part2-part1);
 446     }
 447     else
 448         return m_Word;
 449 }
 450
 451 wxCursor wxHtmlWordCell::GetCursor() const
 452 {
 453     if ( !GetLink() )
 454     {
 455         if ( !gs_cursorText )
 456             gs_cursorText = new wxCursor(wxCURSOR_IBEAM);
 457         return *gs_cursorText;
 458     }
 459     else
 460         return wxHtmlCell::GetCursor();
 461 }
 462
 463
 464
 465 //-----------------------------------------------------------------------------
 466 // wxHtmlContainerCell
 467 //-----------------------------------------------------------------------------
 468
 469
 470 wxHtmlContainerCell::wxHtmlContainerCell(wxHtmlContainerCell *parent) : wxHtmlCell()
 471 {
 472     m_Cells = m_LastCell = NULL;
 473     m_Parent = parent;
 474     if (m_Parent) m_Parent->InsertCell(this);
 475     m_AlignHor = wxHTML_ALIGN_LEFT;
 476     m_AlignVer = wxHTML_ALIGN_BOTTOM;
 477     m_IndentLeft = m_IndentRight = m_IndentTop = m_IndentBottom = 0;
 478     m_WidthFloat = 100; m_WidthFloatUnits = wxHTML_UNITS_PERCENT;
 479     m_UseBkColour = FALSE;
 480     m_UseBorder = FALSE;
 481     m_MinHeight = 0;
 482     m_MinHeightAlign = wxHTML_ALIGN_TOP;
 483     m_LastLayout = -1;
 484 }
 485
 486 wxHtmlContainerCell::~wxHtmlContainerCell()
 487 {
 488     wxHtmlCell *cell = m_Cells;
 489     while ( cell )
 490     {
 491         wxHtmlCell *cellNext = cell->GetNext();
 492         delete cell;
 493         cell = cellNext;
 494     }
 495 }
 496
 497
 498
 499 void wxHtmlContainerCell::SetIndent(int i, int what, int units)
 500 {
 501     int val = (units == wxHTML_UNITS_PIXELS) ? i : -i;
 502     if (what & wxHTML_INDENT_LEFT) m_IndentLeft = val;
 503     if (what & wxHTML_INDENT_RIGHT) m_IndentRight = val;
 504     if (what & wxHTML_INDENT_TOP) m_IndentTop = val;
 505     if (what & wxHTML_INDENT_BOTTOM) m_IndentBottom = val;
 506     m_LastLayout = -1;
 507 }
 508
 509
 510
 511 int wxHtmlContainerCell::GetIndent(int ind) const
 512 {
 513     if (ind & wxHTML_INDENT_LEFT) return m_IndentLeft;
 514     else if (ind & wxHTML_INDENT_RIGHT) return m_IndentRight;
 515     else if (ind & wxHTML_INDENT_TOP) return m_IndentTop;
 516     else if (ind & wxHTML_INDENT_BOTTOM) return m_IndentBottom;
 517     else return -1; /* BUG! Should not be called... */
 518 }
 519
 520
 521
 522
 523 int wxHtmlContainerCell::GetIndentUnits(int ind) const
 524 {
 525     bool p = FALSE;
 526     if (ind & wxHTML_INDENT_LEFT) p = m_IndentLeft < 0;
 527     else if (ind & wxHTML_INDENT_RIGHT) p = m_IndentRight < 0;
 528     else if (ind & wxHTML_INDENT_TOP) p = m_IndentTop < 0;
 529     else if (ind & wxHTML_INDENT_BOTTOM) p = m_IndentBottom < 0;
 530     if (p) return wxHTML_UNITS_PERCENT;
 531     else return wxHTML_UNITS_PIXELS;
 532 }
 533
 534
 535
 536 bool wxHtmlContainerCell::AdjustPagebreak(int *pagebreak, int* known_pagebreaks, int number_of_pages) const
 537 {
 538     if (!m_CanLiveOnPagebreak)
 539         return wxHtmlCell::AdjustPagebreak(pagebreak, known_pagebreaks, number_of_pages);
 540
 541     else
 542     {
 543         wxHtmlCell *c = GetFirstChild();
 544         bool rt = FALSE;
 545         int pbrk = *pagebreak - m_PosY;
 546
 547         while (c)
 548         {
 549             if (c->AdjustPagebreak(&pbrk, known_pagebreaks, number_of_pages))
 550                 rt = TRUE;
 551             c = c->GetNext();
 552         }
 553         if (rt)
 554             *pagebreak = pbrk + m_PosY;
 555         return rt;
 556     }
 557 }
 558
 559
 560
 561 void wxHtmlContainerCell::Layout(int w)
 562 {
 563     wxHtmlCell::Layout(w);
 564
 565     if (m_LastLayout == w) return;
 566
 567     // VS: Any attempt to layout with negative or zero width leads to hell,
 568     // but we can't ignore such attempts completely, since it sometimes
 569     // happen (e.g. when trying how small a table can be). The best thing we
 570     // can do is to set the width of child cells to zero
 571     if (w < 1)
 572     {
 573        m_Width = 0;
 574        for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
 575             cell->Layout(0);
 576             // this does two things: it recursively calls this code on all
 577             // child contrainers and resets children's position to (0,0)
 578        return;
 579     }
 580
 581     wxHtmlCell *cell = m_Cells, *line = m_Cells;
 582     long xpos = 0, ypos = m_IndentTop;
 583     int xdelta = 0, ybasicpos = 0, ydiff;
 584     int s_width, s_indent;
 585     int ysizeup = 0, ysizedown = 0;
 586     int MaxLineWidth = 0;
 587     int xcnt = 0;
 588
 589
 590     /*
 591
 592     WIDTH ADJUSTING :
 593
 594     */
 595
 596     if (m_WidthFloatUnits == wxHTML_UNITS_PERCENT)
 597     {
 598         if (m_WidthFloat < 0) m_Width = (100 + m_WidthFloat) * w / 100;
 599         else m_Width = m_WidthFloat * w / 100;
 600     }
 601     else
 602     {
 603         if (m_WidthFloat < 0) m_Width = w + m_WidthFloat;
 604         else m_Width = m_WidthFloat;
 605     }
 606
 607     if (m_Cells)
 608     {
 609         int l = (m_IndentLeft < 0) ? (-m_IndentLeft * m_Width / 100) : m_IndentLeft;
 610         int r = (m_IndentRight < 0) ? (-m_IndentRight * m_Width / 100) : m_IndentRight;
 611         for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
 612             cell->Layout(m_Width - (l + r));
 613     }
 614
 615     /*
 616
 617     LAYOUTING :
 618
 619     */
 620
 621     // adjust indentation:
 622     s_indent = (m_IndentLeft < 0) ? (-m_IndentLeft * m_Width / 100) : m_IndentLeft;
 623     s_width = m_Width - s_indent - ((m_IndentRight < 0) ? (-m_IndentRight * m_Width / 100) : m_IndentRight);
 624
 625     // my own layouting:
 626     while (cell != NULL)
 627     {
 628         switch (m_AlignVer)
 629         {
 630             case wxHTML_ALIGN_TOP :      ybasicpos = 0; break;
 631             case wxHTML_ALIGN_BOTTOM :   ybasicpos = - cell->GetHeight(); break;
 632             case wxHTML_ALIGN_CENTER :   ybasicpos = - cell->GetHeight() / 2; break;
 633         }
 634         ydiff = cell->GetHeight() + ybasicpos;
 635
 636         if (cell->GetDescent() + ydiff > ysizedown) ysizedown = cell->GetDescent() + ydiff;
 637         if (ybasicpos + cell->GetDescent() < -ysizeup) ysizeup = - (ybasicpos + cell->GetDescent());
 638
 639         cell->SetPos(xpos, ybasicpos + cell->GetDescent());
 640         xpos += cell->GetWidth();
 641         cell = cell->GetNext();
 642         xcnt++;
 643
 644         // force new line if occured:
 645         if ((cell == NULL) || (xpos + cell->GetWidth() > s_width))
 646         {
 647             if (xpos > MaxLineWidth) MaxLineWidth = xpos;
 648             if (ysizeup < 0) ysizeup = 0;
 649             if (ysizedown < 0) ysizedown = 0;
 650             switch (m_AlignHor) {
 651                 case wxHTML_ALIGN_LEFT :
 652                 case wxHTML_ALIGN_JUSTIFY :
 653                          xdelta = 0;
 654                          break;
 655                 case wxHTML_ALIGN_RIGHT :
 656                          xdelta = 0 + (s_width - xpos);
 657                          break;
 658                 case wxHTML_ALIGN_CENTER :
 659                          xdelta = 0 + (s_width - xpos) / 2;
 660                          break;
 661             }
 662             if (xdelta < 0) xdelta = 0;
 663             xdelta += s_indent;
 664
 665             ypos += ysizeup;
 666
 667             if (m_AlignHor != wxHTML_ALIGN_JUSTIFY || cell == NULL)
 668                 while (line != cell)
 669                 {
 670                     line->SetPos(line->GetPosX() + xdelta,
 671                                    ypos + line->GetPosY());
 672                     line = line->GetNext();
 673                 }
 674             else
 675             {
 676                 int counter = 0;
 677                 int step = (s_width - xpos);
 678                 if (step < 0) step = 0;
 679                 xcnt--;
 680                 if (xcnt > 0) while (line != cell)
 681                 {
 682                     line->SetPos(line->GetPosX() + s_indent +
 683                                    (counter++ * step / xcnt),
 684                                    ypos + line->GetPosY());
 685                     line = line->GetNext();
 686                 }
 687                 xcnt++;
 688             }
 689
 690             ypos += ysizedown;
 691             xpos = xcnt = 0;
 692             ysizeup = ysizedown = 0;
 693             line = cell;
 694         }
 695     }
 696
 697     // setup height & width, depending on container layout:
 698     m_Height = ypos + (ysizedown + ysizeup) + m_IndentBottom;
 699
 700     if (m_Height < m_MinHeight)
 701     {
 702         if (m_MinHeightAlign != wxHTML_ALIGN_TOP)
 703         {
 704             int diff = m_MinHeight - m_Height;
 705             if (m_MinHeightAlign == wxHTML_ALIGN_CENTER) diff /= 2;
 706             cell = m_Cells;
 707             while (cell)
 708             {
 709                 cell->SetPos(cell->GetPosX(), cell->GetPosY() + diff);
 710                 cell = cell->GetNext();
 711             }
 712         }
 713         m_Height = m_MinHeight;
 714     }
 715
 716     MaxLineWidth += s_indent + ((m_IndentRight < 0) ? (-m_IndentRight * m_Width / 100) : m_IndentRight);
 717     if (m_Width < MaxLineWidth) m_Width = MaxLineWidth;
 718
 719     m_LastLayout = w;
 720 }
 721
 722 void wxHtmlContainerCell::UpdateRenderingStatePre(wxHtmlRenderingInfo& info,
 723                                                   wxHtmlCell *cell) const
 724 {
 725     wxHtmlSelection *s = info.GetSelection();
 726     if (!s) return;
 727     if (s->GetFromCell() == cell || s->GetToCell() == cell)
 728     {
 729         info.GetState().SetSelectionState(wxHTML_SEL_CHANGING);
 730     }
 731 }
 732
 733 void wxHtmlContainerCell::UpdateRenderingStatePost(wxHtmlRenderingInfo& info,
 734                                                    wxHtmlCell *cell) const
 735 {
 736     wxHtmlSelection *s = info.GetSelection();
 737     if (!s) return;
 738     if (s->GetToCell() == cell)
 739         info.GetState().SetSelectionState(wxHTML_SEL_OUT);
 740     else if (s->GetFromCell() == cell)
 741         info.GetState().SetSelectionState(wxHTML_SEL_IN);
 742 }
 743
 744 #define mMin(a, b) (((a) < (b)) ? (a) : (b))
 745 #define mMax(a, b) (((a) < (b)) ? (b) : (a))
 746
 747 void wxHtmlContainerCell::Draw(wxDC& dc, int x, int y, int view_y1, int view_y2,
 748                                wxHtmlRenderingInfo& info)
 749 {
 750     // container visible, draw it:
 751     if ((y + m_PosY <= view_y2) && (y + m_PosY + m_Height > view_y1))
 752     {
 753         if (m_UseBkColour)
 754         {
 755             wxBrush myb = wxBrush(m_BkColour, wxSOLID);
 756
 757             int real_y1 = mMax(y + m_PosY, view_y1);
 758             int real_y2 = mMin(y + m_PosY + m_Height - 1, view_y2);
 759
 760             dc.SetBrush(myb);
 761             dc.SetPen(*wxTRANSPARENT_PEN);
 762             dc.DrawRectangle(x + m_PosX, real_y1, m_Width, real_y2 - real_y1 + 1);
 763         }
 764
 765         if (m_UseBorder)
 766         {
 767             wxPen mypen1(m_BorderColour1, 1, wxSOLID);
 768             wxPen mypen2(m_BorderColour2, 1, wxSOLID);
 769
 770             dc.SetPen(mypen1);
 771             dc.DrawLine(x + m_PosX, y + m_PosY, x + m_PosX, y + m_PosY + m_Height - 1);
 772             dc.DrawLine(x + m_PosX, y + m_PosY, x + m_PosX + m_Width, y + m_PosY);
 773             dc.SetPen(mypen2);
 774             dc.DrawLine(x + m_PosX + m_Width - 1, y + m_PosY, x + m_PosX +  m_Width - 1, y + m_PosY + m_Height - 1);
 775             dc.DrawLine(x + m_PosX, y + m_PosY + m_Height - 1, x + m_PosX + m_Width, y + m_PosY + m_Height - 1);
 776         }
 777
 778         if (m_Cells)
 779         {
 780             // draw container's contents:
 781             for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
 782             {
 783                 UpdateRenderingStatePre(info, cell);
 784                 cell->Draw(dc,
 785                            x + m_PosX, y + m_PosY, view_y1, view_y2,
 786                            info);
 787                 UpdateRenderingStatePost(info, cell);
 788             }
 789         }
 790     }
 791     // container invisible, just proceed font+color changing:
 792     else
 793     {
 794         DrawInvisible(dc, x, y, info);
 795     }
 796 }
 797
 798
 799
 800 void wxHtmlContainerCell::DrawInvisible(wxDC& dc, int x, int y,
 801                                         wxHtmlRenderingInfo& info)
 802 {
 803     if (m_Cells)
 804     {
 805         for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
 806         {
 807             UpdateRenderingStatePre(info, cell);
 808             cell->DrawInvisible(dc, x + m_PosX, y + m_PosY, info);
 809             UpdateRenderingStatePost(info, cell);
 810         }
 811     }
 812 }
 813
 814
 815 wxColour wxHtmlContainerCell::GetBackgroundColour()
 816 {
 817     if (m_UseBkColour)
 818         return m_BkColour;
 819     else
 820         return wxNullColour;
 821 }
 822
 823
 824
 825 wxHtmlLinkInfo *wxHtmlContainerCell::GetLink(int x, int y) const
 826 {
 827     wxHtmlCell *cell = FindCellByPos(x, y);
 828
 829     // VZ: I don't know if we should pass absolute or relative coords to
 830     //     wxHtmlCell::GetLink()? As the base class version just ignores them
 831     //     anyhow, it hardly matters right now but should still be clarified
 832     return cell ? cell->GetLink(x, y) : NULL;
 833 }
 834
 835
 836
 837 void wxHtmlContainerCell::InsertCell(wxHtmlCell *f)
 838 {
 839     if (!m_Cells) m_Cells = m_LastCell = f;
 840     else
 841     {
 842         m_LastCell->SetNext(f);
 843         m_LastCell = f;
 844         if (m_LastCell) while (m_LastCell->GetNext()) m_LastCell = m_LastCell->GetNext();
 845     }
 846     f->SetParent(this);
 847     m_LastLayout = -1;
 848 }
 849
 850
 851
 852 void wxHtmlContainerCell::SetAlign(const wxHtmlTag& tag)
 853 {
 854     if (tag.HasParam(wxT("ALIGN")))
 855     {
 856         wxString alg = tag.GetParam(wxT("ALIGN"));
 857         alg.MakeUpper();
 858         if (alg == wxT("CENTER"))
 859             SetAlignHor(wxHTML_ALIGN_CENTER);
 860         else if (alg == wxT("LEFT"))
 861             SetAlignHor(wxHTML_ALIGN_LEFT);
 862         else if (alg == wxT("JUSTIFY"))
 863             SetAlignHor(wxHTML_ALIGN_JUSTIFY);
 864         else if (alg == wxT("RIGHT"))
 865             SetAlignHor(wxHTML_ALIGN_RIGHT);
 866         m_LastLayout = -1;
 867     }
 868 }
 869
 870
 871
 872 void wxHtmlContainerCell::SetWidthFloat(const wxHtmlTag& tag, double pixel_scale)
 873 {
 874     if (tag.HasParam(wxT("WIDTH")))
 875     {
 876         int wdi;
 877         wxString wd = tag.GetParam(wxT("WIDTH"));
 878
 879         if (wd[wd.Length()-1] == wxT('%'))
 880         {
 881             wxSscanf(wd.c_str(), wxT("%i%%"), &wdi);
 882             SetWidthFloat(wdi, wxHTML_UNITS_PERCENT);
 883         }
 884         else
 885         {
 886             wxSscanf(wd.c_str(), wxT("%i"), &wdi);
 887             SetWidthFloat((int)(pixel_scale * (double)wdi), wxHTML_UNITS_PIXELS);
 888         }
 889         m_LastLayout = -1;
 890     }
 891 }
 892
 893
 894
 895 const wxHtmlCell* wxHtmlContainerCell::Find(int condition, const void* param) const
 896 {
 897     if (m_Cells)
 898     {
 899         const wxHtmlCell *r = NULL;
 900
 901         for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
 902         {
 903             r = cell->Find(condition, param);
 904             if (r) return r;
 905         }
 906     }
 907     return NULL;
 908 }
 909
 910
 911 wxHtmlCell *wxHtmlContainerCell::FindCellByPos(wxCoord x, wxCoord y,
 912                                                unsigned flags) const
 913 {
 914     if ( flags & wxHTML_FIND_EXACT )
 915     {
 916         for ( const wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext() )
 917         {
 918             int cx = cell->GetPosX(),
 919                 cy = cell->GetPosY();
 920
 921             if ( (cx <= x) && (cx + cell->GetWidth() > x) &&
 922                  (cy <= y) && (cy + cell->GetHeight() > y) )
 923             {
 924                 return cell->FindCellByPos(x - cx, y - cy, flags);
 925             }
 926         }
 927     }
 928     else if ( flags & wxHTML_FIND_NEAREST_AFTER )
 929     {
 930         wxHtmlCell *c;
 931         int y2;
 932         for ( const wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext() )
 933         {
 934             y2 = cell->GetPosY() + cell->GetHeight() - 1;
 935             if (y2 < y || (y2 == y && cell->GetPosX()+cell->GetWidth()-1 < x))
 936                 continue;
 937             c = cell->FindCellByPos(x - cell->GetPosX(), y - cell->GetPosY(),
 938                                     flags);
 939             if (c) return c;
 940         }
 941     }
 942     else if ( flags & wxHTML_FIND_NEAREST_BEFORE )
 943     {
 944         wxHtmlCell *c2, *c = NULL;
 945         for ( const wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext() )
 946         {
 947             if (cell->GetPosY() > y ||
 948                     (cell->GetPosY() == y && cell->GetPosX() > x))
 949                 break;
 950             c2 = cell->FindCellByPos(x - cell->GetPosX(), y - cell->GetPosY(),
 951                                      flags);
 952             if (c2)
 953                 c = c2;
 954         }
 955         if (c) return c;
 956     }
 957
 958     return NULL;
 959 }
 960
 961
 962 void wxHtmlContainerCell::OnMouseClick(wxWindow *parent, int x, int y, const wxMouseEvent& event)
 963 {
 964     wxHtmlCell *cell = FindCellByPos(x, y);
 965     if ( cell )
 966         cell->OnMouseClick(parent, x, y, event);
 967 }
 968
 969
 970
 971 void wxHtmlContainerCell::GetHorizontalConstraints(int *left, int *right) const
 972 {
 973     int cleft = m_PosX + m_Width, cright = m_PosX; // worst case
 974     int l, r;
 975
 976     for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
 977     {
 978         cell->GetHorizontalConstraints(&l, &r);
 979         if (l < cleft)
 980             cleft = l;
 981         if (r > cright)
 982             cright = r;
 983     }
 984
 985     cleft -= (m_IndentLeft < 0) ? (-m_IndentLeft * m_Width / 100) : m_IndentLeft;
 986     cright += (m_IndentRight < 0) ? (-m_IndentRight * m_Width / 100) : m_IndentRight;
 987
 988     if (left)
 989         *left = cleft;
 990     if (right)
 991         *right = cright;
 992 }
 993
 994
 995 wxHtmlCell *wxHtmlContainerCell::GetFirstTerminal() const
 996 {
 997     if ( m_Cells )
 998     {
 999         wxHtmlCell *c2;
1000         for (wxHtmlCell *c = m_Cells; c; c = c->GetNext())
1001         {
1002             c2 = c->GetFirstTerminal();
1003             if ( c2 )
1004                 return c2;
1005         }
1006     }
1007     return NULL;
1008 }
1009
1010 wxHtmlCell *wxHtmlContainerCell::GetLastTerminal() const
1011 {
1012     if ( m_Cells )
1013     {
1014         // most common case first:
1015         wxHtmlCell *c = m_LastCell->GetLastTerminal();
1016         if ( c )
1017             return c;
1018
1019         wxHtmlCell *c2 = NULL;
1020         for (c = m_Cells; c; c = c->GetNext())
1021             c2 = c->GetLastTerminal();
1022         return c2;
1023     }
1024     else
1025         return NULL;
1026 }
1027
1028
1029
1030
1031 // --------------------------------------------------------------------------
1032 // wxHtmlColourCell
1033 // --------------------------------------------------------------------------
1034
1035 void wxHtmlColourCell::Draw(wxDC& dc,
1036                             int x, int y,
1037                             int WXUNUSED(view_y1), int WXUNUSED(view_y2),
1038                             wxHtmlRenderingInfo& info)
1039 {
1040     DrawInvisible(dc, x, y, info);
1041 }
1042
1043 void wxHtmlColourCell::DrawInvisible(wxDC& dc,
1044                                      int WXUNUSED(x), int WXUNUSED(y),
1045                                      wxHtmlRenderingInfo& info)
1046 {
1047     wxHtmlRenderingState& state = info.GetState();
1048     if (m_Flags & wxHTML_CLR_FOREGROUND)
1049     {
1050         state.SetFgColour(m_Colour);
1051         if (state.GetSelectionState() != wxHTML_SEL_IN)
1052             dc.SetTextForeground(m_Colour);
1053         else
1054             dc.SetTextForeground(
1055                     info.GetStyle().GetSelectedTextColour(m_Colour));
1056     }
1057     if (m_Flags & wxHTML_CLR_BACKGROUND)
1058     {
1059         state.SetBgColour(m_Colour);
1060         if (state.GetSelectionState() != wxHTML_SEL_IN)
1061             dc.SetTextBackground(m_Colour);
1062         else
1063             dc.SetTextBackground(
1064                     info.GetStyle().GetSelectedTextBgColour(m_Colour));
1065         dc.SetBackground(wxBrush(m_Colour, wxSOLID));
1066     }
1067 }
1068
1069
1070
1071
1072 // ---------------------------------------------------------------------------
1073 // wxHtmlFontCell
1074 // ---------------------------------------------------------------------------
1075
1076 void wxHtmlFontCell::Draw(wxDC& dc,
1077                           int WXUNUSED(x), int WXUNUSED(y),
1078                           int WXUNUSED(view_y1), int WXUNUSED(view_y2),
1079                           wxHtmlRenderingInfo& WXUNUSED(info))
1080 {
1081     dc.SetFont(m_Font);
1082 }
1083
1084 void wxHtmlFontCell::DrawInvisible(wxDC& dc, int WXUNUSED(x), int WXUNUSED(y),
1085                                    wxHtmlRenderingInfo& WXUNUSED(info))
1086 {
1087     dc.SetFont(m_Font);
1088 }
1089
1090
1091
1092
1093
1094
1095
1096
1097 // ---------------------------------------------------------------------------
1098 // wxHtmlWidgetCell
1099 // ---------------------------------------------------------------------------
1100
1101 wxHtmlWidgetCell::wxHtmlWidgetCell(wxWindow *wnd, int w)
1102 {
1103     int sx, sy;
1104     m_Wnd = wnd;
1105     m_Wnd->GetSize(&sx, &sy);
1106     m_Width = sx, m_Height = sy;
1107     m_WidthFloat = w;
1108 }
1109
1110
1111 void wxHtmlWidgetCell::Draw(wxDC& WXUNUSED(dc),
1112                             int WXUNUSED(x), int WXUNUSED(y),
1113                             int WXUNUSED(view_y1), int WXUNUSED(view_y2),
1114                             wxHtmlRenderingInfo& WXUNUSED(info))
1115 {
1116     int absx = 0, absy = 0, stx, sty;
1117     wxHtmlCell *c = this;
1118
1119     while (c)
1120     {
1121         absx += c->GetPosX();
1122         absy += c->GetPosY();
1123         c = c->GetParent();
1124     }
1125
1126     ((wxScrolledWindow*)(m_Wnd->GetParent()))->GetViewStart(&stx, &sty);
1127     m_Wnd->SetSize(absx - wxHTML_SCROLL_STEP * stx, absy  - wxHTML_SCROLL_STEP * sty, m_Width, m_Height);
1128 }
1129
1130
1131
1132 void wxHtmlWidgetCell::DrawInvisible(wxDC& WXUNUSED(dc),
1133                                      int WXUNUSED(x), int WXUNUSED(y),
1134                                      wxHtmlRenderingInfo& WXUNUSED(info))
1135 {
1136     int absx = 0, absy = 0, stx, sty;
1137     wxHtmlCell *c = this;
1138
1139     while (c)
1140     {
1141         absx += c->GetPosX();
1142         absy += c->GetPosY();
1143         c = c->GetParent();
1144     }
1145
1146     ((wxScrolledWindow*)(m_Wnd->GetParent()))->GetViewStart(&stx, &sty);
1147     m_Wnd->SetSize(absx - wxHTML_SCROLL_STEP * stx, absy  - wxHTML_SCROLL_STEP * sty, m_Width, m_Height);
1148 }
1149
1150
1151
1152 void wxHtmlWidgetCell::Layout(int w)
1153 {
1154     if (m_WidthFloat != 0)
1155     {
1156         m_Width = (w * m_WidthFloat) / 100;
1157         m_Wnd->SetSize(m_Width, m_Height);
1158     }
1159
1160     wxHtmlCell::Layout(w);
1161 }
1162
1163
1164
1165 // ----------------------------------------------------------------------------
1166 // wxHtmlTerminalCellsInterator
1167 // ----------------------------------------------------------------------------
1168
1169 const wxHtmlCell* wxHtmlTerminalCellsInterator::operator++()
1170 {
1171     if ( !m_pos )
1172         return NULL;
1173
1174     do
1175     {
1176         if ( m_pos == m_to )
1177         {
1178             m_pos = NULL;
1179             return NULL;
1180         }
1181
1182         if ( m_pos->GetNext() )
1183             m_pos = m_pos->GetNext();
1184         else
1185         {
1186             // we must go up the hierarchy until we reach container where this
1187             // is not the last child, and then go down to first terminal cell:
1188             while ( m_pos->GetNext() == NULL )
1189             {
1190                 m_pos = m_pos->GetParent();
1191                 if ( !m_pos )
1192                     return NULL;
1193             }
1194             m_pos = m_pos->GetNext();
1195         }
1196         while ( m_pos->GetFirstChild() != NULL )
1197             m_pos = m_pos->GetFirstChild();
1198     } while ( !m_pos->IsTerminalCell() );
1199
1200     return m_pos;
1201 }
1202
1203
1204
1205
1206
1207
1208
1209 //-----------------------------------------------------------------------------
1210 // Cleanup
1211 //-----------------------------------------------------------------------------
1212
1213 class wxHtmlCellModule: public wxModule
1214 {
1215 DECLARE_DYNAMIC_CLASS(wxHtmlCellModule)
1216 public:
1217     wxHtmlCellModule() : wxModule() {}
1218     bool OnInit() { return true; }
1219     void OnExit()
1220     {
1221         wxDELETE(gs_cursorLink);
1222         wxDELETE(gs_cursorText);
1223     }
1224 };
1225
1226 IMPLEMENT_DYNAMIC_CLASS(wxHtmlCellModule, wxModule)
1227
1228 #endif