src/html/htmlcell.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/html/htmlcell.cpp
   3 // Purpose:     wxHtmlCell - basic element of HTML output
   4 // Author:      Vaclav Slavik
   5 // RCS-ID:      $Id$
   6 // Copyright:   (c) 1999 Vaclav Slavik
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 #include "wx/wxprec.h"
  11
  12 #ifdef __BORLANDC__
  13     #pragma hdrstop
  14 #endif
  15
  16 #if wxUSE_HTML && wxUSE_STREAMS
  17
  18 #ifndef WXPRECOMP
  19     #include "wx/dynarray.h"
  20     #include "wx/brush.h"
  21     #include "wx/colour.h"
  22     #include "wx/dc.h"
  23     #include "wx/settings.h"
  24 #endif
  25
  26 #include "wx/html/htmlcell.h"
  27 #include "wx/html/htmlwin.h"
  28 #include "wx/module.h"
  29
  30 #include <stdlib.h>
  31
  32 //-----------------------------------------------------------------------------
  33 // Helper classes
  34 //-----------------------------------------------------------------------------
  35
  36 void wxHtmlSelection::Set(const wxPoint& fromPos, const wxHtmlCell *fromCell,
  37                           const wxPoint& toPos, const wxHtmlCell *toCell)
  38 {
  39     m_fromCell = fromCell;
  40     m_toCell = toCell;
  41     m_fromPos = fromPos;
  42     m_toPos = toPos;
  43 }
  44
  45 void wxHtmlSelection::Set(const wxHtmlCell *fromCell, const wxHtmlCell *toCell)
  46 {
  47     wxPoint p1 = fromCell ? fromCell->GetAbsPos() : wxDefaultPosition;
  48     wxPoint p2 = toCell ? toCell->GetAbsPos() : wxDefaultPosition;
  49     if ( toCell )
  50     {
  51         p2.x += toCell->GetWidth();
  52         p2.y += toCell->GetHeight();
  53     }
  54     Set(p1, fromCell, p2, toCell);
  55 }
  56
  57 wxColour
  58 wxDefaultHtmlRenderingStyle::
  59 GetSelectedTextColour(const wxColour& WXUNUSED(clr))
  60 {
  61     return wxSystemSettings::GetColour(wxSYS_COLOUR_HIGHLIGHTTEXT);
  62 }
  63
  64 wxColour
  65 wxDefaultHtmlRenderingStyle::
  66 GetSelectedTextBgColour(const wxColour& WXUNUSED(clr))
  67 {
  68     return wxSystemSettings::GetColour(wxSYS_COLOUR_HIGHLIGHT);
  69 }
  70
  71
  72 //-----------------------------------------------------------------------------
  73 // wxHtmlCell
  74 //-----------------------------------------------------------------------------
  75
  76 IMPLEMENT_ABSTRACT_CLASS(wxHtmlCell, wxObject)
  77
  78 wxHtmlCell::wxHtmlCell() : wxObject()
  79 {
  80     m_Next = NULL;
  81     m_Parent = NULL;
  82     m_Width = m_Height = m_Descent = 0;
  83     m_ScriptMode = wxHTML_SCRIPT_NORMAL;        // <sub> or <sup> mode
  84     m_ScriptBaseline = 0;                       // <sub> or <sup> baseline
  85     m_CanLiveOnPagebreak = true;
  86     m_Link = NULL;
  87 }
  88
  89 wxHtmlCell::~wxHtmlCell()
  90 {
  91     delete m_Link;
  92 }
  93
  94 // Update the descent value when whe are in a <sub> or <sup>.
  95 // prevbase is the parent base
  96 void wxHtmlCell::SetScriptMode(wxHtmlScriptMode mode, long previousBase)
  97 {
  98     m_ScriptMode = mode;
  99
 100     if (mode == wxHTML_SCRIPT_SUP)
 101         m_ScriptBaseline = previousBase - (m_Height + 1) / 2;
 102     else if (mode == wxHTML_SCRIPT_SUB)
 103         m_ScriptBaseline = previousBase + (m_Height + 1) / 6;
 104     else
 105         m_ScriptBaseline = 0;
 106
 107     m_Descent += m_ScriptBaseline;
 108 }
 109
 110 #if WXWIN_COMPATIBILITY_2_6
 111
 112 struct wxHtmlCellOnMouseClickCompatHelper;
 113
 114 static wxHtmlCellOnMouseClickCompatHelper *gs_helperOnMouseClick = NULL;
 115
 116 // helper for routing calls to new ProcessMouseClick() method to deprecated
 117 // OnMouseClick() method
 118 struct wxHtmlCellOnMouseClickCompatHelper
 119 {
 120     wxHtmlCellOnMouseClickCompatHelper(wxHtmlWindowInterface *window_,
 121                                        const wxPoint& pos_,
 122                                        const wxMouseEvent& event_)
 123         : window(window_), pos(pos_), event(event_), retval(false)
 124     {
 125     }
 126
 127     bool CallOnMouseClick(wxHtmlCell *cell)
 128     {
 129         wxHtmlCellOnMouseClickCompatHelper *oldHelper = gs_helperOnMouseClick;
 130         gs_helperOnMouseClick = this;
 131         cell->OnMouseClick
 132               (
 133                 window ? window->GetHTMLWindow() : NULL,
 134                 pos.x, pos.y,
 135                 event
 136               );
 137         gs_helperOnMouseClick = oldHelper;
 138         return retval;
 139     }
 140
 141     wxHtmlWindowInterface *window;
 142     const wxPoint& pos;
 143     const wxMouseEvent& event;
 144     bool retval;
 145 };
 146 #endif // WXWIN_COMPATIBILITY_2_6
 147
 148 bool wxHtmlCell::ProcessMouseClick(wxHtmlWindowInterface *window,
 149                                    const wxPoint& pos,
 150                                    const wxMouseEvent& event)
 151 {
 152     wxCHECK_MSG( window, false, _T("window interface must be provided") );
 153
 154 #if WXWIN_COMPATIBILITY_2_6
 155     // NB: this hack puts the body of ProcessMouseClick() into OnMouseClick()
 156     //     (for which it has to pass the arguments and return value via a
 157     //     helper variable because these two methods have different
 158     //     signatures), so that old code overriding OnMouseClick will continue
 159     //     to work
 160     wxHtmlCellOnMouseClickCompatHelper compat(window, pos, event);
 161     return compat.CallOnMouseClick(this);
 162 }
 163
 164 void wxHtmlCell::OnMouseClick(wxWindow *, int, int, const wxMouseEvent& event)
 165 {
 166     wxCHECK_RET( gs_helperOnMouseClick, _T("unexpected call to OnMouseClick") );
 167     wxHtmlWindowInterface *window = gs_helperOnMouseClick->window;
 168     const wxPoint& pos = gs_helperOnMouseClick->pos;
 169 #endif // WXWIN_COMPATIBILITY_2_6
 170
 171     wxHtmlLinkInfo *lnk = GetLink(pos.x, pos.y);
 172     bool retval = false;
 173
 174     if (lnk)
 175     {
 176         wxHtmlLinkInfo lnk2(*lnk);
 177         lnk2.SetEvent(&event);
 178         lnk2.SetHtmlCell(this);
 179
 180         window->OnHTMLLinkClicked(lnk2);
 181         retval = true;
 182     }
 183
 184 #if WXWIN_COMPATIBILITY_2_6
 185     gs_helperOnMouseClick->retval = retval;
 186 #else
 187     return retval;
 188 #endif // WXWIN_COMPATIBILITY_2_6
 189 }
 190
 191 #if WXWIN_COMPATIBILITY_2_6
 192 wxCursor wxHtmlCell::GetCursor() const
 193 {
 194     return wxNullCursor;
 195 }
 196 #endif // WXWIN_COMPATIBILITY_2_6
 197
 198 wxCursor wxHtmlCell::GetMouseCursor(wxHtmlWindowInterface *window) const
 199 {
 200 #if WXWIN_COMPATIBILITY_2_6
 201     // NB: Older versions of wx used GetCursor() virtual method in place of
 202     //     GetMouseCursor(interface). This code ensures that user code that
 203     //     overriden GetCursor() continues to work. The trick is that the base
 204     //     wxHtmlCell::GetCursor() method simply returns wxNullCursor, so we
 205     //     know that GetCursor() was overriden iff it returns valid cursor.
 206     wxCursor cur = GetCursor();
 207     if (cur.Ok())
 208         return cur;
 209 #endif // WXWIN_COMPATIBILITY_2_6
 210
 211     if ( GetLink() )
 212     {
 213         return window->GetHTMLCursor(wxHtmlWindowInterface::HTMLCursor_Link);
 214     }
 215     else
 216     {
 217         return window->GetHTMLCursor(wxHtmlWindowInterface::HTMLCursor_Default);
 218     }
 219 }
 220
 221
 222 bool wxHtmlCell::AdjustPagebreak(int *pagebreak,
 223                                  wxArrayInt& WXUNUSED(known_pagebreaks)) const
 224 {
 225     if ((!m_CanLiveOnPagebreak) &&
 226                 m_PosY < *pagebreak && m_PosY + m_Height > *pagebreak)
 227     {
 228         *pagebreak = m_PosY;
 229         return true;
 230     }
 231
 232     return false;
 233 }
 234
 235
 236
 237 void wxHtmlCell::SetLink(const wxHtmlLinkInfo& link)
 238 {
 239     if (m_Link) delete m_Link;
 240     m_Link = NULL;
 241     if (link.GetHref() != wxEmptyString)
 242         m_Link = new wxHtmlLinkInfo(link);
 243 }
 244
 245
 246 void wxHtmlCell::Layout(int WXUNUSED(w))
 247 {
 248     SetPos(0, 0);
 249 }
 250
 251
 252
 253 const wxHtmlCell* wxHtmlCell::Find(int WXUNUSED(condition), const void* WXUNUSED(param)) const
 254 {
 255     return NULL;
 256 }
 257
 258
 259 wxHtmlCell *wxHtmlCell::FindCellByPos(wxCoord x, wxCoord y,
 260                                       unsigned flags) const
 261 {
 262     if ( x >= 0 && x < m_Width && y >= 0 && y < m_Height )
 263     {
 264         return wxConstCast(this, wxHtmlCell);
 265     }
 266     else
 267     {
 268         if ((flags & wxHTML_FIND_NEAREST_AFTER) &&
 269                 (y < 0 || (y < 0+m_Height && x < 0+m_Width)))
 270             return wxConstCast(this, wxHtmlCell);
 271         else if ((flags & wxHTML_FIND_NEAREST_BEFORE) &&
 272                 (y >= 0+m_Height || (y >= 0 && x >= 0)))
 273             return wxConstCast(this, wxHtmlCell);
 274         else
 275             return NULL;
 276     }
 277 }
 278
 279
 280 wxPoint wxHtmlCell::GetAbsPos(wxHtmlCell *rootCell) const
 281 {
 282     wxPoint p(m_PosX, m_PosY);
 283     for (wxHtmlCell *parent = m_Parent; parent && parent != rootCell;
 284          parent = parent->m_Parent)
 285     {
 286         p.x += parent->m_PosX;
 287         p.y += parent->m_PosY;
 288     }
 289     return p;
 290 }
 291
 292 wxHtmlCell *wxHtmlCell::GetRootCell() const
 293 {
 294     wxHtmlCell *c = wxConstCast(this, wxHtmlCell);
 295     while ( c->m_Parent )
 296         c = c->m_Parent;
 297     return c;
 298 }
 299
 300 unsigned wxHtmlCell::GetDepth() const
 301 {
 302     unsigned d = 0;
 303     for (wxHtmlCell *p = m_Parent; p; p = p->m_Parent)
 304         d++;
 305     return d;
 306 }
 307
 308 bool wxHtmlCell::IsBefore(wxHtmlCell *cell) const
 309 {
 310     const wxHtmlCell *c1 = this;
 311     const wxHtmlCell *c2 = cell;
 312     unsigned d1 = GetDepth();
 313     unsigned d2 = cell->GetDepth();
 314
 315     if ( d1 > d2 )
 316         for (; d1 != d2; d1-- )
 317             c1 = c1->m_Parent;
 318     else if ( d1 < d2 )
 319         for (; d1 != d2; d2-- )
 320             c2 = c2->m_Parent;
 321
 322     if ( cell == this )
 323         return true;
 324
 325     while ( c1 && c2 )
 326     {
 327         if ( c1->m_Parent == c2->m_Parent )
 328         {
 329             while ( c1 )
 330             {
 331                 if ( c1 == c2 )
 332                     return true;
 333                 c1 = c1->GetNext();
 334             }
 335             return false;
 336         }
 337         else
 338         {
 339             c1 = c1->m_Parent;
 340             c2 = c2->m_Parent;
 341         }
 342     }
 343
 344     wxFAIL_MSG(_T("Cells are in different trees"));
 345     return false;
 346 }
 347
 348
 349 //-----------------------------------------------------------------------------
 350 // wxHtmlWordCell
 351 //-----------------------------------------------------------------------------
 352
 353 IMPLEMENT_ABSTRACT_CLASS(wxHtmlWordCell, wxHtmlCell)
 354
 355 wxHtmlWordCell::wxHtmlWordCell(const wxString& word, const wxDC& dc) : wxHtmlCell()
 356 {
 357     m_Word = word;
 358     dc.GetTextExtent(m_Word, &m_Width, &m_Height, &m_Descent);
 359     SetCanLiveOnPagebreak(false);
 360     m_allowLinebreak = true;
 361 }
 362
 363 void wxHtmlWordCell::SetPreviousWord(wxHtmlWordCell *cell)
 364 {
 365     if ( cell && m_Parent == cell->m_Parent &&
 366          !wxIsspace(cell->m_Word.Last()) && !wxIsspace(m_Word[0u]) )
 367     {
 368         m_allowLinebreak = false;
 369     }
 370 }
 371
 372 // Splits m_Word into up to three parts according to selection, returns
 373 // substring before, in and after selection and the points (in relative coords)
 374 // where s2 and s3 start:
 375 void wxHtmlWordCell::Split(const wxDC& dc,
 376                            const wxPoint& selFrom, const wxPoint& selTo,
 377                            unsigned& pos1, unsigned& pos2) const
 378 {
 379     wxPoint pt1 = (selFrom == wxDefaultPosition) ?
 380                    wxDefaultPosition : selFrom - GetAbsPos();
 381     wxPoint pt2 = (selTo == wxDefaultPosition) ?
 382                    wxPoint(m_Width, wxDefaultCoord) : selTo - GetAbsPos();
 383
 384     unsigned len = m_Word.length();
 385     unsigned i = 0;
 386     pos1 = 0;
 387
 388     // adjust for cases when the start/end position is completely
 389     // outside the cell:
 390     if ( pt1.y < 0 )
 391         pt1.x = 0;
 392     if ( pt2.y >= m_Height )
 393         pt2.x = m_Width;
 394
 395     // before selection:
 396 #ifdef __WXMAC__
 397     // implementation using PartialExtents to support fractional widths
 398     wxArrayInt widths ;
 399     dc.GetPartialTextExtents(m_Word,widths) ;
 400     while( i < len && pt1.x >= widths[i] )
 401         i++ ;
 402 #else // __WXMAC__
 403     wxCoord charW, charH;
 404     while ( pt1.x > 0 && i < len )
 405     {
 406         dc.GetTextExtent(m_Word[i], &charW, &charH);
 407         pt1.x -= charW;
 408         if ( pt1.x >= 0 )
 409         {
 410             pos1 += charW;
 411             i++;
 412         }
 413     }
 414 #endif // __WXMAC__/!__WXMAC__
 415
 416     // in selection:
 417     unsigned j = i;
 418 #ifdef __WXMAC__
 419     while( j < len && pt2.x >= widths[j] )
 420         j++ ;
 421 #else // __WXMAC__
 422     pos2 = pos1;
 423     pt2.x -= pos2;
 424     while ( pt2.x > 0 && j < len )
 425     {
 426         dc.GetTextExtent(m_Word[j], &charW, &charH);
 427         pt2.x -= charW;
 428         if ( pt2.x >= 0 )
 429         {
 430             pos2 += charW;
 431             j++;
 432         }
 433     }
 434 #endif // __WXMAC__/!__WXMAC__
 435
 436     pos1 = i;
 437     pos2 = j;
 438 }
 439
 440 void wxHtmlWordCell::SetSelectionPrivPos(const wxDC& dc, wxHtmlSelection *s) const
 441 {
 442     unsigned p1, p2;
 443
 444     Split(dc,
 445           this == s->GetFromCell() ? s->GetFromPos() : wxDefaultPosition,
 446           this == s->GetToCell() ? s->GetToPos() : wxDefaultPosition,
 447           p1, p2);
 448
 449     wxPoint p(0, m_Word.length());
 450
 451     if ( this == s->GetFromCell() )
 452         p.x = p1; // selection starts here
 453     if ( this == s->GetToCell() )
 454         p.y = p2; // selection ends here
 455
 456     if ( this == s->GetFromCell() )
 457         s->SetFromPrivPos(p);
 458     if ( this == s->GetToCell() )
 459         s->SetToPrivPos(p);
 460 }
 461
 462
 463 static void SwitchSelState(wxDC& dc, wxHtmlRenderingInfo& info,
 464                            bool toSelection)
 465 {
 466     wxColour fg = info.GetState().GetFgColour();
 467     wxColour bg = info.GetState().GetBgColour();
 468
 469     if ( toSelection )
 470     {
 471         dc.SetBackgroundMode(wxSOLID);
 472         dc.SetTextForeground(info.GetStyle().GetSelectedTextColour(fg));
 473         dc.SetTextBackground(info.GetStyle().GetSelectedTextBgColour(bg));
 474         dc.SetBackground(wxBrush(info.GetStyle().GetSelectedTextBgColour(bg),
 475                                  wxSOLID));
 476     }
 477     else
 478     {
 479         dc.SetBackgroundMode(wxTRANSPARENT);
 480         dc.SetTextForeground(fg);
 481         dc.SetTextBackground(bg);
 482         dc.SetBackground(wxBrush(bg, wxSOLID));
 483     }
 484 }
 485
 486
 487 void wxHtmlWordCell::Draw(wxDC& dc, int x, int y,
 488                           int WXUNUSED(view_y1), int WXUNUSED(view_y2),
 489                           wxHtmlRenderingInfo& info)
 490 {
 491 #if 0 // useful for debugging
 492     dc.SetPen(*wxBLACK_PEN);
 493     dc.DrawRectangle(x+m_PosX,y+m_PosY,m_Width /* VZ: +1? */ ,m_Height);
 494 #endif
 495
 496     bool drawSelectionAfterCell = false;
 497
 498     if ( info.GetState().GetSelectionState() == wxHTML_SEL_CHANGING )
 499     {
 500         // Selection changing, we must draw the word piecewise:
 501         wxHtmlSelection *s = info.GetSelection();
 502         wxString txt;
 503         int w, h;
 504         int ofs = 0;
 505
 506         wxPoint priv = (this == s->GetFromCell()) ?
 507                            s->GetFromPrivPos() : s->GetToPrivPos();
 508
 509         // NB: this is quite a hack: in order to compute selection boundaries
 510         //     (in word's characters) we must know current font, which is only
 511         //     possible inside rendering code. Therefore we update the
 512         //     information here and store it in wxHtmlSelection so that
 513         //     ConvertToText can use it later:
 514         if ( priv == wxDefaultPosition )
 515         {
 516             SetSelectionPrivPos(dc, s);
 517             priv = (this == s->GetFromCell()) ?
 518                     s->GetFromPrivPos() : s->GetToPrivPos();
 519         }
 520
 521         int part1 = priv.x;
 522         int part2 = priv.y;
 523
 524         if ( part1 > 0 )
 525         {
 526             txt = m_Word.Mid(0, part1);
 527             dc.DrawText(txt, x + m_PosX, y + m_PosY);
 528             dc.GetTextExtent(txt, &w, &h);
 529             ofs += w;
 530         }
 531
 532         SwitchSelState(dc, info, true);
 533
 534         txt = m_Word.Mid(part1, part2-part1);
 535         dc.DrawText(txt, ofs + x + m_PosX, y + m_PosY);
 536
 537         if ( (size_t)part2 < m_Word.length() )
 538         {
 539             dc.GetTextExtent(txt, &w, &h);
 540             ofs += w;
 541             SwitchSelState(dc, info, false);
 542             txt = m_Word.Mid(part2);
 543             dc.DrawText(txt, ofs + x + m_PosX, y + m_PosY);
 544         }
 545         else
 546             drawSelectionAfterCell = true;
 547     }
 548     else
 549     {
 550         wxHtmlSelectionState selstate = info.GetState().GetSelectionState();
 551         // Not changing selection state, draw the word in single mode:
 552         if ( selstate != wxHTML_SEL_OUT &&
 553              dc.GetBackgroundMode() != wxSOLID )
 554         {
 555             SwitchSelState(dc, info, true);
 556         }
 557         else if ( selstate == wxHTML_SEL_OUT &&
 558                   dc.GetBackgroundMode() == wxSOLID )
 559         {
 560             SwitchSelState(dc, info, false);
 561         }
 562         dc.DrawText(m_Word, x + m_PosX, y + m_PosY);
 563         drawSelectionAfterCell = (selstate != wxHTML_SEL_OUT);
 564     }
 565
 566     // NB: If the text is justified then there is usually some free space
 567     //     between adjacent cells and drawing the selection only onto cells
 568     //     would result in ugly unselected spaces. The code below detects
 569     //     this special case and renders the selection *outside* the sell,
 570     //     too.
 571     if ( m_Parent->GetAlignHor() == wxHTML_ALIGN_JUSTIFY &&
 572          drawSelectionAfterCell )
 573     {
 574         wxHtmlCell *nextCell = m_Next;
 575         while ( nextCell && nextCell->IsFormattingCell() )
 576             nextCell = nextCell->GetNext();
 577         if ( nextCell )
 578         {
 579             int nextX = nextCell->GetPosX();
 580             if ( m_PosX + m_Width < nextX )
 581             {
 582                 dc.SetBrush(dc.GetBackground());
 583                 dc.SetPen(*wxTRANSPARENT_PEN);
 584                 dc.DrawRectangle(x + m_PosX + m_Width, y + m_PosY,
 585                                  nextX - m_PosX - m_Width, m_Height);
 586             }
 587         }
 588     }
 589 }
 590
 591
 592 wxString wxHtmlWordCell::ConvertToText(wxHtmlSelection *s) const
 593 {
 594     if ( s && (this == s->GetFromCell() || this == s->GetToCell()) )
 595     {
 596         wxPoint priv = this == s->GetFromCell() ? s->GetFromPrivPos()
 597                                                 : s->GetToPrivPos();
 598
 599         // VZ: we may be called before we had a chance to re-render ourselves
 600         //     and in this case GetFrom/ToPrivPos() is not set yet -- assume
 601         //     that this only happens in case of a double/triple click (which
 602         //     seems to be the case now) and so it makes sense to select the
 603         //     entire contents of the cell in this case
 604         //
 605         // TODO: but this really needs to be fixed in some better way later...
 606         if ( priv != wxDefaultPosition )
 607         {
 608             int part1 = priv.x;
 609             int part2 = priv.y;
 610             return m_Word.Mid(part1, part2-part1);
 611         }
 612         //else: return the whole word below
 613     }
 614
 615     return m_Word;
 616 }
 617
 618 wxCursor wxHtmlWordCell::GetMouseCursor(wxHtmlWindowInterface *window) const
 619 {
 620     if ( !GetLink() )
 621     {
 622         return window->GetHTMLCursor(wxHtmlWindowInterface::HTMLCursor_Text);
 623     }
 624     else
 625     {
 626         return wxHtmlCell::GetMouseCursor(window);
 627     }
 628 }
 629
 630
 631 //-----------------------------------------------------------------------------
 632 // wxHtmlContainerCell
 633 //-----------------------------------------------------------------------------
 634
 635 IMPLEMENT_ABSTRACT_CLASS(wxHtmlContainerCell, wxHtmlCell)
 636
 637 wxHtmlContainerCell::wxHtmlContainerCell(wxHtmlContainerCell *parent) : wxHtmlCell()
 638 {
 639     m_Cells = m_LastCell = NULL;
 640     m_Parent = parent;
 641     m_MaxTotalWidth = 0;
 642     if (m_Parent) m_Parent->InsertCell(this);
 643     m_AlignHor = wxHTML_ALIGN_LEFT;
 644     m_AlignVer = wxHTML_ALIGN_BOTTOM;
 645     m_IndentLeft = m_IndentRight = m_IndentTop = m_IndentBottom = 0;
 646     m_WidthFloat = 100; m_WidthFloatUnits = wxHTML_UNITS_PERCENT;
 647     m_UseBkColour = false;
 648     m_UseBorder = false;
 649     m_MinHeight = 0;
 650     m_MinHeightAlign = wxHTML_ALIGN_TOP;
 651     m_LastLayout = -1;
 652 }
 653
 654 wxHtmlContainerCell::~wxHtmlContainerCell()
 655 {
 656     wxHtmlCell *cell = m_Cells;
 657     while ( cell )
 658     {
 659         wxHtmlCell *cellNext = cell->GetNext();
 660         delete cell;
 661         cell = cellNext;
 662     }
 663 }
 664
 665
 666
 667 void wxHtmlContainerCell::SetIndent(int i, int what, int units)
 668 {
 669     int val = (units == wxHTML_UNITS_PIXELS) ? i : -i;
 670     if (what & wxHTML_INDENT_LEFT) m_IndentLeft = val;
 671     if (what & wxHTML_INDENT_RIGHT) m_IndentRight = val;
 672     if (what & wxHTML_INDENT_TOP) m_IndentTop = val;
 673     if (what & wxHTML_INDENT_BOTTOM) m_IndentBottom = val;
 674     m_LastLayout = -1;
 675 }
 676
 677
 678
 679 int wxHtmlContainerCell::GetIndent(int ind) const
 680 {
 681     if (ind & wxHTML_INDENT_LEFT) return m_IndentLeft;
 682     else if (ind & wxHTML_INDENT_RIGHT) return m_IndentRight;
 683     else if (ind & wxHTML_INDENT_TOP) return m_IndentTop;
 684     else if (ind & wxHTML_INDENT_BOTTOM) return m_IndentBottom;
 685     else return -1; /* BUG! Should not be called... */
 686 }
 687
 688
 689
 690
 691 int wxHtmlContainerCell::GetIndentUnits(int ind) const
 692 {
 693     bool p = false;
 694     if (ind & wxHTML_INDENT_LEFT) p = m_IndentLeft < 0;
 695     else if (ind & wxHTML_INDENT_RIGHT) p = m_IndentRight < 0;
 696     else if (ind & wxHTML_INDENT_TOP) p = m_IndentTop < 0;
 697     else if (ind & wxHTML_INDENT_BOTTOM) p = m_IndentBottom < 0;
 698     if (p) return wxHTML_UNITS_PERCENT;
 699     else return wxHTML_UNITS_PIXELS;
 700 }
 701
 702
 703 bool wxHtmlContainerCell::AdjustPagebreak(int *pagebreak,
 704                                           wxArrayInt& known_pagebreaks) const
 705 {
 706     if (!m_CanLiveOnPagebreak)
 707         return wxHtmlCell::AdjustPagebreak(pagebreak, known_pagebreaks);
 708
 709     wxHtmlCell *c = GetFirstChild();
 710     bool rt = false;
 711     int pbrk = *pagebreak - m_PosY;
 712
 713     while (c)
 714     {
 715         if (c->AdjustPagebreak(&pbrk, known_pagebreaks))
 716             rt = true;
 717         c = c->GetNext();
 718     }
 719     if (rt)
 720         *pagebreak = pbrk + m_PosY;
 721     return rt;
 722 }
 723
 724
 725 void wxHtmlContainerCell::Layout(int w)
 726 {
 727     wxHtmlCell::Layout(w);
 728
 729     if (m_LastLayout == w) return;
 730
 731     // VS: Any attempt to layout with negative or zero width leads to hell,
 732     // but we can't ignore such attempts completely, since it sometimes
 733     // happen (e.g. when trying how small a table can be). The best thing we
 734     // can do is to set the width of child cells to zero
 735     if (w < 1)
 736     {
 737        m_Width = 0;
 738        for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
 739             cell->Layout(0);
 740             // this does two things: it recursively calls this code on all
 741             // child contrainers and resets children's position to (0,0)
 742        return;
 743     }
 744
 745     wxHtmlCell *nextCell;
 746     long xpos = 0, ypos = m_IndentTop;
 747     int xdelta = 0, ybasicpos = 0, ydiff;
 748     int s_width, nextWordWidth, s_indent;
 749     int ysizeup = 0, ysizedown = 0;
 750     int MaxLineWidth = 0;
 751     int curLineWidth = 0;
 752     m_MaxTotalWidth = 0;
 753
 754
 755     /*
 756
 757     WIDTH ADJUSTING :
 758
 759     */
 760
 761     if (m_WidthFloatUnits == wxHTML_UNITS_PERCENT)
 762     {
 763         if (m_WidthFloat < 0) m_Width = (100 + m_WidthFloat) * w / 100;
 764         else m_Width = m_WidthFloat * w / 100;
 765     }
 766     else
 767     {
 768         if (m_WidthFloat < 0) m_Width = w + m_WidthFloat;
 769         else m_Width = m_WidthFloat;
 770     }
 771
 772     if (m_Cells)
 773     {
 774         int l = (m_IndentLeft < 0) ? (-m_IndentLeft * m_Width / 100) : m_IndentLeft;
 775         int r = (m_IndentRight < 0) ? (-m_IndentRight * m_Width / 100) : m_IndentRight;
 776         for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
 777             cell->Layout(m_Width - (l + r));
 778     }
 779
 780     /*
 781
 782     LAYOUTING :
 783
 784     */
 785
 786     // adjust indentation:
 787     s_indent = (m_IndentLeft < 0) ? (-m_IndentLeft * m_Width / 100) : m_IndentLeft;
 788     s_width = m_Width - s_indent - ((m_IndentRight < 0) ? (-m_IndentRight * m_Width / 100) : m_IndentRight);
 789
 790     // my own layouting:
 791     wxHtmlCell *cell = m_Cells,
 792                *line = m_Cells;
 793     while (cell != NULL)
 794     {
 795         switch (m_AlignVer)
 796         {
 797             case wxHTML_ALIGN_TOP :      ybasicpos = 0; break;
 798             case wxHTML_ALIGN_BOTTOM :   ybasicpos = - cell->GetHeight(); break;
 799             case wxHTML_ALIGN_CENTER :   ybasicpos = - cell->GetHeight() / 2; break;
 800         }
 801         ydiff = cell->GetHeight() + ybasicpos;
 802
 803         if (cell->GetDescent() + ydiff > ysizedown) ysizedown = cell->GetDescent() + ydiff;
 804         if (ybasicpos + cell->GetDescent() < -ysizeup) ysizeup = - (ybasicpos + cell->GetDescent());
 805
 806         // layout nonbreakable run of cells:
 807         cell->SetPos(xpos, ybasicpos + cell->GetDescent());
 808         xpos += cell->GetWidth();
 809         if (!cell->IsTerminalCell())
 810         {
 811             // Container cell indicates new line
 812             if (curLineWidth > m_MaxTotalWidth)
 813                 m_MaxTotalWidth = curLineWidth;
 814
 815             if (wxMax(cell->GetWidth(), cell->GetMaxTotalWidth()) > m_MaxTotalWidth)
 816                 m_MaxTotalWidth = cell->GetMaxTotalWidth();
 817             curLineWidth = 0;
 818         }
 819         else
 820             // Normal cell, add maximum cell width to line width
 821             curLineWidth += cell->GetMaxTotalWidth();
 822
 823         cell = cell->GetNext();
 824
 825         // compute length of the next word that would be added:
 826         nextWordWidth = 0;
 827         if (cell)
 828         {
 829             nextCell = cell;
 830             do
 831             {
 832                 nextWordWidth += nextCell->GetWidth();
 833                 nextCell = nextCell->GetNext();
 834             } while (nextCell && !nextCell->IsLinebreakAllowed());
 835         }
 836
 837         // force new line if occurred:
 838         if ((cell == NULL) ||
 839             (xpos + nextWordWidth > s_width && cell->IsLinebreakAllowed()))
 840         {
 841             if (xpos > MaxLineWidth) MaxLineWidth = xpos;
 842             if (ysizeup < 0) ysizeup = 0;
 843             if (ysizedown < 0) ysizedown = 0;
 844             switch (m_AlignHor) {
 845                 case wxHTML_ALIGN_LEFT :
 846                 case wxHTML_ALIGN_JUSTIFY :
 847                          xdelta = 0;
 848                          break;
 849                 case wxHTML_ALIGN_RIGHT :
 850                          xdelta = 0 + (s_width - xpos);
 851                          break;
 852                 case wxHTML_ALIGN_CENTER :
 853                          xdelta = 0 + (s_width - xpos) / 2;
 854                          break;
 855             }
 856             if (xdelta < 0) xdelta = 0;
 857             xdelta += s_indent;
 858
 859             ypos += ysizeup;
 860
 861             if (m_AlignHor != wxHTML_ALIGN_JUSTIFY || cell == NULL)
 862             {
 863                 while (line != cell)
 864                 {
 865                     line->SetPos(line->GetPosX() + xdelta,
 866                                    ypos + line->GetPosY());
 867                     line = line->GetNext();
 868                 }
 869             }
 870             else // align == justify
 871             {
 872                 // we have to distribute the extra horz space between the cells
 873                 // on this line
 874
 875                 // an added complication is that some cells have fixed size and
 876                 // shouldn't get any increment (it so happens that these cells
 877                 // also don't allow line break on them which provides with an
 878                 // easy way to test for this) -- and neither should the cells
 879                 // adjacent to them as this could result in a visible space
 880                 // between two cells separated by, e.g. font change, cell which
 881                 // is wrong
 882
 883                 int step = s_width - xpos;
 884                 if ( step > 0 )
 885                 {
 886                     // first count the cells which will get extra space
 887                     int total = 0;
 888
 889                     const wxHtmlCell *c;
 890                     if ( line != cell )
 891                     {
 892                         for ( c = line->GetNext(); c != cell; c = c->GetNext() )
 893                         {
 894                             if ( c->IsLinebreakAllowed() )
 895                             {
 896                                 total++;
 897                             }
 898                         }
 899                     }
 900
 901                     // and now extra space to those cells which merit it
 902                     if ( total )
 903                     {
 904                         // first cell on line is not moved:
 905                         line->SetPos(line->GetPosX() + s_indent,
 906                                      line->GetPosY() + ypos);
 907
 908                         line = line->GetNext();
 909                         for ( int n = 0; line != cell; line = line->GetNext() )
 910                         {
 911                             if ( line->IsLinebreakAllowed() )
 912                             {
 913                                 // offset the next cell relative to this one
 914                                 // thus increasing our size
 915                                 n++;
 916                             }
 917
 918                             line->SetPos(line->GetPosX() + s_indent +
 919                                            ((n * step) / total),
 920                                            line->GetPosY() + ypos);
 921                         }
 922                     }
 923                     else
 924                     {
 925                         // this will cause the code to enter "else branch" below:
 926                         step = 0;
 927                     }
 928                 }
 929                 // else branch:
 930                 if ( step <= 0 ) // no extra space to distribute
 931                 {
 932                     // just set the indent properly
 933                     while (line != cell)
 934                     {
 935                         line->SetPos(line->GetPosX() + s_indent,
 936                                      line->GetPosY() + ypos);
 937                         line = line->GetNext();
 938                     }
 939                 }
 940             }
 941
 942             ypos += ysizedown;
 943             xpos = 0;
 944             ysizeup = ysizedown = 0;
 945             line = cell;
 946         }
 947     }
 948
 949     // setup height & width, depending on container layout:
 950     m_Height = ypos + (ysizedown + ysizeup) + m_IndentBottom;
 951
 952     if (m_Height < m_MinHeight)
 953     {
 954         if (m_MinHeightAlign != wxHTML_ALIGN_TOP)
 955         {
 956             int diff = m_MinHeight - m_Height;
 957             if (m_MinHeightAlign == wxHTML_ALIGN_CENTER) diff /= 2;
 958             cell = m_Cells;
 959             while (cell)
 960             {
 961                 cell->SetPos(cell->GetPosX(), cell->GetPosY() + diff);
 962                 cell = cell->GetNext();
 963             }
 964         }
 965         m_Height = m_MinHeight;
 966     }
 967
 968     if (curLineWidth > m_MaxTotalWidth)
 969         m_MaxTotalWidth = curLineWidth;
 970
 971     m_MaxTotalWidth += s_indent + ((m_IndentRight < 0) ? (-m_IndentRight * m_Width / 100) : m_IndentRight);
 972     MaxLineWidth += s_indent + ((m_IndentRight < 0) ? (-m_IndentRight * m_Width / 100) : m_IndentRight);
 973     if (m_Width < MaxLineWidth) m_Width = MaxLineWidth;
 974
 975     m_LastLayout = w;
 976 }
 977
 978 void wxHtmlContainerCell::UpdateRenderingStatePre(wxHtmlRenderingInfo& info,
 979                                                   wxHtmlCell *cell) const
 980 {
 981     wxHtmlSelection *s = info.GetSelection();
 982     if (!s) return;
 983     if (s->GetFromCell() == cell || s->GetToCell() == cell)
 984     {
 985         info.GetState().SetSelectionState(wxHTML_SEL_CHANGING);
 986     }
 987 }
 988
 989 void wxHtmlContainerCell::UpdateRenderingStatePost(wxHtmlRenderingInfo& info,
 990                                                    wxHtmlCell *cell) const
 991 {
 992     wxHtmlSelection *s = info.GetSelection();
 993     if (!s) return;
 994     if (s->GetToCell() == cell)
 995         info.GetState().SetSelectionState(wxHTML_SEL_OUT);
 996     else if (s->GetFromCell() == cell)
 997         info.GetState().SetSelectionState(wxHTML_SEL_IN);
 998 }
 999
1000 #define mMin(a, b) (((a) < (b)) ? (a) : (b))
1001 #define mMax(a, b) (((a) < (b)) ? (b) : (a))
1002
1003 void wxHtmlContainerCell::Draw(wxDC& dc, int x, int y, int view_y1, int view_y2,
1004                                wxHtmlRenderingInfo& info)
1005 {
1006 #if 0 // useful for debugging
1007     dc.SetPen(*wxRED_PEN);
1008     dc.DrawRectangle(x+m_PosX,y+m_PosY,m_Width,m_Height);
1009 #endif
1010
1011     int xlocal = x + m_PosX;
1012     int ylocal = y + m_PosY;
1013
1014     if (m_UseBkColour)
1015     {
1016         wxBrush myb = wxBrush(m_BkColour, wxSOLID);
1017
1018         int real_y1 = mMax(ylocal, view_y1);
1019         int real_y2 = mMin(ylocal + m_Height - 1, view_y2);
1020
1021         dc.SetBrush(myb);
1022         dc.SetPen(*wxTRANSPARENT_PEN);
1023         dc.DrawRectangle(xlocal, real_y1, m_Width, real_y2 - real_y1 + 1);
1024     }
1025
1026     if (m_UseBorder)
1027     {
1028         wxPen mypen1(m_BorderColour1, 1, wxSOLID);
1029         wxPen mypen2(m_BorderColour2, 1, wxSOLID);
1030
1031         dc.SetPen(mypen1);
1032         dc.DrawLine(xlocal, ylocal, xlocal, ylocal + m_Height - 1);
1033         dc.DrawLine(xlocal, ylocal, xlocal + m_Width, ylocal);
1034         dc.SetPen(mypen2);
1035         dc.DrawLine(xlocal + m_Width - 1, ylocal, xlocal +  m_Width - 1, ylocal + m_Height - 1);
1036         dc.DrawLine(xlocal, ylocal + m_Height - 1, xlocal + m_Width, ylocal + m_Height - 1);
1037     }
1038
1039     if (m_Cells)
1040     {
1041         // draw container's contents:
1042         for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
1043         {
1044
1045             // optimize drawing: don't render off-screen content:
1046             if ((ylocal + cell->GetPosY() <= view_y2) &&
1047                 (ylocal + cell->GetPosY() + cell->GetHeight() > view_y1))
1048             {
1049                 // the cell is visible, draw it:
1050                 UpdateRenderingStatePre(info, cell);
1051                 cell->Draw(dc,
1052                            xlocal, ylocal, view_y1, view_y2,
1053                            info);
1054                 UpdateRenderingStatePost(info, cell);
1055             }
1056             else
1057             {
1058                 // the cell is off-screen, proceed with font+color+etc.
1059                 // changes only:
1060                 cell->DrawInvisible(dc, xlocal, ylocal, info);
1061             }
1062         }
1063     }
1064 }
1065
1066
1067
1068 void wxHtmlContainerCell::DrawInvisible(wxDC& dc, int x, int y,
1069                                         wxHtmlRenderingInfo& info)
1070 {
1071     if (m_Cells)
1072     {
1073         for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
1074         {
1075             UpdateRenderingStatePre(info, cell);
1076             cell->DrawInvisible(dc, x + m_PosX, y + m_PosY, info);
1077             UpdateRenderingStatePost(info, cell);
1078         }
1079     }
1080 }
1081
1082
1083 wxColour wxHtmlContainerCell::GetBackgroundColour()
1084 {
1085     if (m_UseBkColour)
1086         return m_BkColour;
1087     else
1088         return wxNullColour;
1089 }
1090
1091
1092
1093 wxHtmlLinkInfo *wxHtmlContainerCell::GetLink(int x, int y) const
1094 {
1095     wxHtmlCell *cell = FindCellByPos(x, y);
1096
1097     // VZ: I don't know if we should pass absolute or relative coords to
1098     //     wxHtmlCell::GetLink()? As the base class version just ignores them
1099     //     anyhow, it hardly matters right now but should still be clarified
1100     return cell ? cell->GetLink(x, y) : NULL;
1101 }
1102
1103
1104
1105 void wxHtmlContainerCell::InsertCell(wxHtmlCell *f)
1106 {
1107     if (!m_Cells) m_Cells = m_LastCell = f;
1108     else
1109     {
1110         m_LastCell->SetNext(f);
1111         m_LastCell = f;
1112         if (m_LastCell) while (m_LastCell->GetNext()) m_LastCell = m_LastCell->GetNext();
1113     }
1114     f->SetParent(this);
1115     m_LastLayout = -1;
1116 }
1117
1118
1119
1120 void wxHtmlContainerCell::SetAlign(const wxHtmlTag& tag)
1121 {
1122     if (tag.HasParam(wxT("ALIGN")))
1123     {
1124         wxString alg = tag.GetParam(wxT("ALIGN"));
1125         alg.MakeUpper();
1126         if (alg == wxT("CENTER"))
1127             SetAlignHor(wxHTML_ALIGN_CENTER);
1128         else if (alg == wxT("LEFT"))
1129             SetAlignHor(wxHTML_ALIGN_LEFT);
1130         else if (alg == wxT("JUSTIFY"))
1131             SetAlignHor(wxHTML_ALIGN_JUSTIFY);
1132         else if (alg == wxT("RIGHT"))
1133             SetAlignHor(wxHTML_ALIGN_RIGHT);
1134         m_LastLayout = -1;
1135     }
1136 }
1137
1138
1139
1140 void wxHtmlContainerCell::SetWidthFloat(const wxHtmlTag& tag, double pixel_scale)
1141 {
1142     if (tag.HasParam(wxT("WIDTH")))
1143     {
1144         int wdi;
1145         wxString wd = tag.GetParam(wxT("WIDTH"));
1146
1147         if (wd[wd.length()-1] == wxT('%'))
1148         {
1149             wxSscanf(wd.c_str(), wxT("%i%%"), &wdi);
1150             SetWidthFloat(wdi, wxHTML_UNITS_PERCENT);
1151         }
1152         else
1153         {
1154             wxSscanf(wd.c_str(), wxT("%i"), &wdi);
1155             SetWidthFloat((int)(pixel_scale * (double)wdi), wxHTML_UNITS_PIXELS);
1156         }
1157         m_LastLayout = -1;
1158     }
1159 }
1160
1161
1162
1163 const wxHtmlCell* wxHtmlContainerCell::Find(int condition, const void* param) const
1164 {
1165     if (m_Cells)
1166     {
1167         for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
1168         {
1169             const wxHtmlCell *r = cell->Find(condition, param);
1170             if (r) return r;
1171         }
1172     }
1173     return NULL;
1174 }
1175
1176
1177 wxHtmlCell *wxHtmlContainerCell::FindCellByPos(wxCoord x, wxCoord y,
1178                                                unsigned flags) const
1179 {
1180     if ( flags & wxHTML_FIND_EXACT )
1181     {
1182         for ( const wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext() )
1183         {
1184             int cx = cell->GetPosX(),
1185                 cy = cell->GetPosY();
1186
1187             if ( (cx <= x) && (cx + cell->GetWidth() > x) &&
1188                  (cy <= y) && (cy + cell->GetHeight() > y) )
1189             {
1190                 return cell->FindCellByPos(x - cx, y - cy, flags);
1191             }
1192         }
1193     }
1194     else if ( flags & wxHTML_FIND_NEAREST_AFTER )
1195     {
1196         wxHtmlCell *c;
1197         for ( const wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext() )
1198         {
1199             if ( cell->IsFormattingCell() )
1200                 continue;
1201             int cellY = cell->GetPosY();
1202             if (!( y < cellY || (y < cellY + cell->GetHeight() &&
1203                                  x < cell->GetPosX() + cell->GetWidth()) ))
1204                 continue;
1205
1206             c = cell->FindCellByPos(x - cell->GetPosX(), y - cellY, flags);
1207             if (c) return c;
1208         }
1209     }
1210     else if ( flags & wxHTML_FIND_NEAREST_BEFORE )
1211     {
1212         wxHtmlCell *c2, *c = NULL;
1213         for ( const wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext() )
1214         {
1215             if ( cell->IsFormattingCell() )
1216                 continue;
1217             int cellY = cell->GetPosY();
1218             if (!( cellY + cell->GetHeight() <= y ||
1219                    (y >= cellY && x >= cell->GetPosX()) ))
1220                 break;
1221             c2 = cell->FindCellByPos(x - cell->GetPosX(), y - cellY, flags);
1222             if (c2)
1223                 c = c2;
1224         }
1225         if (c) return c;
1226     }
1227
1228     return NULL;
1229 }
1230
1231
1232 bool wxHtmlContainerCell::ProcessMouseClick(wxHtmlWindowInterface *window,
1233                                             const wxPoint& pos,
1234                                             const wxMouseEvent& event)
1235 {
1236 #if WXWIN_COMPATIBILITY_2_6
1237     wxHtmlCellOnMouseClickCompatHelper compat(window, pos, event);
1238     return compat.CallOnMouseClick(this);
1239 }
1240
1241 void wxHtmlContainerCell::OnMouseClick(wxWindow*,
1242                                        int, int, const wxMouseEvent& event)
1243 {
1244     wxCHECK_RET( gs_helperOnMouseClick, _T("unexpected call to OnMouseClick") );
1245     wxHtmlWindowInterface *window = gs_helperOnMouseClick->window;
1246     const wxPoint& pos = gs_helperOnMouseClick->pos;
1247 #endif // WXWIN_COMPATIBILITY_2_6
1248
1249     bool retval = false;
1250     wxHtmlCell *cell = FindCellByPos(pos.x, pos.y);
1251     if ( cell )
1252         retval = cell->ProcessMouseClick(window, pos, event);
1253
1254 #if WXWIN_COMPATIBILITY_2_6
1255     gs_helperOnMouseClick->retval = retval;
1256 #else
1257     return retval;
1258 #endif // WXWIN_COMPATIBILITY_2_6
1259 }
1260
1261
1262 wxHtmlCell *wxHtmlContainerCell::GetFirstTerminal() const
1263 {
1264     if ( m_Cells )
1265     {
1266         wxHtmlCell *c2;
1267         for (wxHtmlCell *c = m_Cells; c; c = c->GetNext())
1268         {
1269             c2 = c->GetFirstTerminal();
1270             if ( c2 )
1271                 return c2;
1272         }
1273     }
1274     return NULL;
1275 }
1276
1277 wxHtmlCell *wxHtmlContainerCell::GetLastTerminal() const
1278 {
1279     if ( m_Cells )
1280     {
1281         // most common case first:
1282         wxHtmlCell *c = m_LastCell->GetLastTerminal();
1283         if ( c )
1284             return c;
1285
1286         wxHtmlCell *ctmp;
1287         wxHtmlCell *c2 = NULL;
1288         for (c = m_Cells; c; c = c->GetNext())
1289         {
1290             ctmp = c->GetLastTerminal();
1291             if ( ctmp )
1292                 c2 = ctmp;
1293         }
1294         return c2;
1295     }
1296     else
1297         return NULL;
1298 }
1299
1300
1301 static bool IsEmptyContainer(wxHtmlContainerCell *cell)
1302 {
1303     for ( wxHtmlCell *c = cell->GetFirstChild(); c; c = c->GetNext() )
1304     {
1305         if ( !c->IsTerminalCell() || !c->IsFormattingCell() )
1306             return false;
1307     }
1308     return true;
1309 }
1310
1311 void wxHtmlContainerCell::RemoveExtraSpacing(bool top, bool bottom)
1312 {
1313     if ( top )
1314         SetIndent(0, wxHTML_INDENT_TOP);
1315     if ( bottom )
1316         SetIndent(0, wxHTML_INDENT_BOTTOM);
1317
1318     if ( m_Cells )
1319     {
1320         wxHtmlCell *c;
1321         wxHtmlContainerCell *cont;
1322         if ( top )
1323         {
1324             for ( c = m_Cells; c; c = c->GetNext() )
1325             {
1326                 if ( c->IsTerminalCell() )
1327                 {
1328                     if ( !c->IsFormattingCell() )
1329                         break;
1330                 }
1331                 else
1332                 {
1333                     cont = (wxHtmlContainerCell*)c;
1334                     if ( IsEmptyContainer(cont) )
1335                     {
1336                         cont->SetIndent(0, wxHTML_INDENT_VERTICAL);
1337                     }
1338                     else
1339                     {
1340                         cont->RemoveExtraSpacing(true, false);
1341                         break;
1342                     }
1343                 }
1344             }
1345         }
1346
1347         if ( bottom )
1348         {
1349             wxArrayPtrVoid arr;
1350             for ( c = m_Cells; c; c = c->GetNext() )
1351                 arr.Add((void*)c);
1352
1353             for ( int i = arr.GetCount() - 1; i >= 0; i--)
1354             {
1355                 c = (wxHtmlCell*)arr[i];
1356                 if ( c->IsTerminalCell() )
1357                 {
1358                     if ( !c->IsFormattingCell() )
1359                         break;
1360                 }
1361                 else
1362                 {
1363                     cont = (wxHtmlContainerCell*)c;
1364                     if ( IsEmptyContainer(cont) )
1365                     {
1366                         cont->SetIndent(0, wxHTML_INDENT_VERTICAL);
1367                     }
1368                     else
1369                     {
1370                         cont->RemoveExtraSpacing(false, true);
1371                         break;
1372                     }
1373                 }
1374             }
1375         }
1376     }
1377 }
1378
1379
1380
1381
1382 // --------------------------------------------------------------------------
1383 // wxHtmlColourCell
1384 // --------------------------------------------------------------------------
1385
1386 IMPLEMENT_ABSTRACT_CLASS(wxHtmlColourCell, wxHtmlCell)
1387
1388 void wxHtmlColourCell::Draw(wxDC& dc,
1389                             int x, int y,
1390                             int WXUNUSED(view_y1), int WXUNUSED(view_y2),
1391                             wxHtmlRenderingInfo& info)
1392 {
1393     DrawInvisible(dc, x, y, info);
1394 }
1395
1396 void wxHtmlColourCell::DrawInvisible(wxDC& dc,
1397                                      int WXUNUSED(x), int WXUNUSED(y),
1398                                      wxHtmlRenderingInfo& info)
1399 {
1400     wxHtmlRenderingState& state = info.GetState();
1401     if (m_Flags & wxHTML_CLR_FOREGROUND)
1402     {
1403         state.SetFgColour(m_Colour);
1404         if (state.GetSelectionState() != wxHTML_SEL_IN)
1405             dc.SetTextForeground(m_Colour);
1406         else
1407             dc.SetTextForeground(
1408                     info.GetStyle().GetSelectedTextColour(m_Colour));
1409     }
1410     if (m_Flags & wxHTML_CLR_BACKGROUND)
1411     {
1412         state.SetBgColour(m_Colour);
1413         if (state.GetSelectionState() != wxHTML_SEL_IN)
1414         {
1415             dc.SetTextBackground(m_Colour);
1416             dc.SetBackground(wxBrush(m_Colour, wxSOLID));
1417         }
1418         else
1419         {
1420             wxColour c = info.GetStyle().GetSelectedTextBgColour(m_Colour);
1421             dc.SetTextBackground(c);
1422             dc.SetBackground(wxBrush(c, wxSOLID));
1423         }
1424     }
1425 }
1426
1427
1428
1429
1430 // ---------------------------------------------------------------------------
1431 // wxHtmlFontCell
1432 // ---------------------------------------------------------------------------
1433
1434 IMPLEMENT_ABSTRACT_CLASS(wxHtmlFontCell, wxHtmlCell)
1435
1436 void wxHtmlFontCell::Draw(wxDC& dc,
1437                           int WXUNUSED(x), int WXUNUSED(y),
1438                           int WXUNUSED(view_y1), int WXUNUSED(view_y2),
1439                           wxHtmlRenderingInfo& WXUNUSED(info))
1440 {
1441     dc.SetFont(m_Font);
1442 }
1443
1444 void wxHtmlFontCell::DrawInvisible(wxDC& dc, int WXUNUSED(x), int WXUNUSED(y),
1445                                    wxHtmlRenderingInfo& WXUNUSED(info))
1446 {
1447     dc.SetFont(m_Font);
1448 }
1449
1450
1451
1452
1453
1454
1455
1456
1457 // ---------------------------------------------------------------------------
1458 // wxHtmlWidgetCell
1459 // ---------------------------------------------------------------------------
1460
1461 IMPLEMENT_ABSTRACT_CLASS(wxHtmlWidgetCell, wxHtmlCell)
1462
1463 wxHtmlWidgetCell::wxHtmlWidgetCell(wxWindow *wnd, int w)
1464 {
1465     int sx, sy;
1466     m_Wnd = wnd;
1467     m_Wnd->GetSize(&sx, &sy);
1468     m_Width = sx, m_Height = sy;
1469     m_WidthFloat = w;
1470 }
1471
1472
1473 void wxHtmlWidgetCell::Draw(wxDC& WXUNUSED(dc),
1474                             int WXUNUSED(x), int WXUNUSED(y),
1475                             int WXUNUSED(view_y1), int WXUNUSED(view_y2),
1476                             wxHtmlRenderingInfo& WXUNUSED(info))
1477 {
1478     int absx = 0, absy = 0, stx, sty;
1479     wxHtmlCell *c = this;
1480
1481     while (c)
1482     {
1483         absx += c->GetPosX();
1484         absy += c->GetPosY();
1485         c = c->GetParent();
1486     }
1487
1488     ((wxScrolledWindow*)(m_Wnd->GetParent()))->GetViewStart(&stx, &sty);
1489     m_Wnd->SetSize(absx - wxHTML_SCROLL_STEP * stx, absy  - wxHTML_SCROLL_STEP * sty, m_Width, m_Height);
1490 }
1491
1492
1493
1494 void wxHtmlWidgetCell::DrawInvisible(wxDC& WXUNUSED(dc),
1495                                      int WXUNUSED(x), int WXUNUSED(y),
1496                                      wxHtmlRenderingInfo& WXUNUSED(info))
1497 {
1498     int absx = 0, absy = 0, stx, sty;
1499     wxHtmlCell *c = this;
1500
1501     while (c)
1502     {
1503         absx += c->GetPosX();
1504         absy += c->GetPosY();
1505         c = c->GetParent();
1506     }
1507
1508     ((wxScrolledWindow*)(m_Wnd->GetParent()))->GetViewStart(&stx, &sty);
1509     m_Wnd->SetSize(absx - wxHTML_SCROLL_STEP * stx, absy  - wxHTML_SCROLL_STEP * sty, m_Width, m_Height);
1510 }
1511
1512
1513
1514 void wxHtmlWidgetCell::Layout(int w)
1515 {
1516     if (m_WidthFloat != 0)
1517     {
1518         m_Width = (w * m_WidthFloat) / 100;
1519         m_Wnd->SetSize(m_Width, m_Height);
1520     }
1521
1522     wxHtmlCell::Layout(w);
1523 }
1524
1525
1526
1527 // ----------------------------------------------------------------------------
1528 // wxHtmlTerminalCellsInterator
1529 // ----------------------------------------------------------------------------
1530
1531 const wxHtmlCell* wxHtmlTerminalCellsInterator::operator++()
1532 {
1533     if ( !m_pos )
1534         return NULL;
1535
1536     do
1537     {
1538         if ( m_pos == m_to )
1539         {
1540             m_pos = NULL;
1541             return NULL;
1542         }
1543
1544         if ( m_pos->GetNext() )
1545             m_pos = m_pos->GetNext();
1546         else
1547         {
1548             // we must go up the hierarchy until we reach container where this
1549             // is not the last child, and then go down to first terminal cell:
1550             while ( m_pos->GetNext() == NULL )
1551             {
1552                 m_pos = m_pos->GetParent();
1553                 if ( !m_pos )
1554                     return NULL;
1555             }
1556             m_pos = m_pos->GetNext();
1557         }
1558         while ( m_pos->GetFirstChild() != NULL )
1559             m_pos = m_pos->GetFirstChild();
1560     } while ( !m_pos->IsTerminalCell() );
1561
1562     return m_pos;
1563 }
1564
1565 #endif