src/html/m_tables.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/html/m_tables.cpp
   3 // Purpose:     wxHtml module for tables
   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 WX_PRECOMP
  19     #include "wx/wxcrtvararg.h"
  20 #endif
  21
  22 #include "wx/html/forcelnk.h"
  23 #include "wx/html/m_templ.h"
  24
  25 #include "wx/html/htmlcell.h"
  26
  27 FORCE_LINK_ME(m_tables)
  28
  29
  30 #define TABLE_BORDER_CLR_1  wxColour(0xC5, 0xC2, 0xC5)
  31 #define TABLE_BORDER_CLR_2  wxColour(0x62, 0x61, 0x62)
  32
  33
  34 //-----------------------------------------------------------------------------
  35 // wxHtmlTableCell
  36 //-----------------------------------------------------------------------------
  37
  38
  39 struct colStruct
  40 {
  41     int width, units;
  42             // width of the column either in pixels or percents
  43             // ('width' is the number, 'units' determines its meaning)
  44     int minWidth, maxWidth;
  45             // minimal/maximal column width. This is needed by HTML 4.0
  46             // layout algorithm and can be determined by trying to
  47             // layout table cells with width=1 and width=infinity
  48     int leftpos, pixwidth, maxrealwidth;
  49             // temporary (depends on actual width of table)
  50 };
  51
  52 enum cellState
  53 {
  54     cellSpan,
  55     cellUsed,
  56     cellFree
  57 };
  58
  59 struct cellStruct
  60 {
  61     wxHtmlContainerCell *cont;
  62     int colspan, rowspan;
  63     int minheight, valign;
  64     cellState flag;
  65     bool nowrap;
  66 };
  67
  68
  69 class wxHtmlTableCell : public wxHtmlContainerCell
  70 {
  71 protected:
  72     /* These are real attributes: */
  73
  74     // number of columns; rows
  75     int m_NumCols, m_NumRows;
  76     // array of column information
  77     colStruct *m_ColsInfo;
  78     // 2D array of all cells in the table : m_CellInfo[row][column]
  79     cellStruct **m_CellInfo;
  80     // spaces between cells
  81     int m_Spacing;
  82     // cells internal indentation
  83     int m_Padding;
  84
  85 private:
  86     /* ...and these are valid only when parsing the table: */
  87
  88     // number of actual column (ranging from 0..m_NumCols)
  89     int m_ActualCol, m_ActualRow;
  90
  91     // default values (for table and row):
  92     wxColour m_tBkg, m_rBkg;
  93     wxString m_tValign, m_rValign;
  94
  95     double m_PixelScale;
  96
  97
  98 public:
  99     wxHtmlTableCell(wxHtmlContainerCell *parent, const wxHtmlTag& tag, double pixel_scale = 1.0);
 100     virtual ~wxHtmlTableCell();
 101
 102     virtual void RemoveExtraSpacing(bool top, bool bottom);
 103
 104     virtual void Layout(int w);
 105
 106     void AddRow(const wxHtmlTag& tag);
 107     void AddCell(wxHtmlContainerCell *cell, const wxHtmlTag& tag);
 108
 109 private:
 110     // Reallocates memory to given number of cols/rows
 111     // and changes m_NumCols/m_NumRows value to reflect this change
 112     // NOTE! You CAN'T change m_NumCols/m_NumRows before calling this!!
 113     void ReallocCols(int cols);
 114     void ReallocRows(int rows);
 115
 116     // Computes minimal and maximal widths of columns. Needs to be called
 117     // only once, before first Layout().
 118     void ComputeMinMaxWidths();
 119
 120     wxDECLARE_NO_COPY_CLASS(wxHtmlTableCell);
 121 };
 122
 123
 124
 125 wxHtmlTableCell::wxHtmlTableCell(wxHtmlContainerCell *parent, const wxHtmlTag& tag, double pixel_scale)
 126  : wxHtmlContainerCell(parent)
 127 {
 128     m_PixelScale = pixel_scale;
 129     m_ColsInfo = NULL;
 130     m_NumCols = m_NumRows = 0;
 131     m_CellInfo = NULL;
 132     m_ActualCol = m_ActualRow = -1;
 133
 134     /* scan params: */
 135     if (tag.HasParam(wxT("BGCOLOR")))
 136     {
 137         tag.GetParamAsColour(wxT("BGCOLOR"), &m_tBkg);
 138         if (m_tBkg.Ok())
 139             SetBackgroundColour(m_tBkg);
 140     }
 141     if (tag.HasParam(wxT("VALIGN")))
 142         m_tValign = tag.GetParam(wxT("VALIGN"));
 143     else
 144         m_tValign = wxEmptyString;
 145     if (!tag.GetParamAsInt(wxT("CELLSPACING"), &m_Spacing))
 146         m_Spacing = 2;
 147     if (!tag.GetParamAsInt(wxT("CELLPADDING"), &m_Padding))
 148         m_Padding = 3;
 149     m_Spacing = (int)(m_PixelScale * (double)m_Spacing);
 150     m_Padding = (int)(m_PixelScale * (double)m_Padding);
 151
 152     if(tag.HasParam(wxT("BORDER")))
 153     {
 154         if(tag.GetParam("BORDER").IsEmpty())
 155             m_Border = 1;
 156         else
 157             tag.GetParamAsInt(wxT("BORDER"), &m_Border);
 158     }
 159     if (m_Border == 1)
 160         SetBorder(TABLE_BORDER_CLR_1, TABLE_BORDER_CLR_2, m_Border); // special case see wxHtmlContainerCell::Draw
 161     else if (m_Border> 0)
 162         SetBorder(TABLE_BORDER_CLR_1, TABLE_BORDER_CLR_2, (int)(m_PixelScale * (double)m_Border));
 163     else
 164         m_Border = 0;
 165
 166 }
 167
 168
 169
 170 wxHtmlTableCell::~wxHtmlTableCell()
 171 {
 172     if (m_ColsInfo) free(m_ColsInfo);
 173     if (m_CellInfo)
 174     {
 175         for (int i = 0; i < m_NumRows; i++)
 176             free(m_CellInfo[i]);
 177         free(m_CellInfo);
 178     }
 179 }
 180
 181
 182 void wxHtmlTableCell::RemoveExtraSpacing(bool WXUNUSED(top),
 183                                          bool WXUNUSED(bottom))
 184 {
 185     // Don't remove any spacing in the table -- it's always desirable,
 186     // because it's part of table's definition.
 187     // (If wxHtmlContainerCell::RemoveExtraSpacing() was applied to tables,
 188     // then upper left cell of a table would be positioned above other cells
 189     // if the table was the first element on the page.)
 190 }
 191
 192 void wxHtmlTableCell::ReallocCols(int cols)
 193 {
 194     int i,j;
 195
 196     for (i = 0; i < m_NumRows; i++)
 197     {
 198         m_CellInfo[i] = (cellStruct*) realloc(m_CellInfo[i], sizeof(cellStruct) * cols);
 199         for (j = m_NumCols; j < cols; j++)
 200             m_CellInfo[i][j].flag = cellFree;
 201     }
 202
 203     m_ColsInfo = (colStruct*) realloc(m_ColsInfo, sizeof(colStruct) * cols);
 204     for (j = m_NumCols; j < cols; j++)
 205     {
 206            m_ColsInfo[j].width = 0;
 207            m_ColsInfo[j].units = wxHTML_UNITS_PERCENT;
 208            m_ColsInfo[j].minWidth = m_ColsInfo[j].maxWidth = -1;
 209     }
 210
 211     m_NumCols = cols;
 212 }
 213
 214
 215
 216 void wxHtmlTableCell::ReallocRows(int rows)
 217 {
 218     m_CellInfo = (cellStruct**) realloc(m_CellInfo, sizeof(cellStruct*) * rows);
 219     for (int row = m_NumRows; row < rows ; row++)
 220     {
 221         if (m_NumCols == 0)
 222             m_CellInfo[row] = NULL;
 223         else
 224         {
 225             m_CellInfo[row] = (cellStruct*) malloc(sizeof(cellStruct) * m_NumCols);
 226             for (int col = 0; col < m_NumCols; col++)
 227                 m_CellInfo[row][col].flag = cellFree;
 228         }
 229     }
 230     m_NumRows = rows;
 231 }
 232
 233
 234 void wxHtmlTableCell::AddRow(const wxHtmlTag& tag)
 235 {
 236     m_ActualCol = -1;
 237     // VS: real allocation of row entry is done in AddCell in order
 238     //     to correctly handle empty rows (i.e. "<tr></tr>")
 239     //     m_ActualCol == -1 indicates that AddCell has to allocate new row.
 240
 241     // scan params:
 242     m_rBkg = m_tBkg;
 243     if (tag.HasParam(wxT("BGCOLOR")))
 244         tag.GetParamAsColour(wxT("BGCOLOR"), &m_rBkg);
 245     if (tag.HasParam(wxT("VALIGN")))
 246         m_rValign = tag.GetParam(wxT("VALIGN"));
 247     else
 248         m_rValign = m_tValign;
 249 }
 250
 251
 252
 253 void wxHtmlTableCell::AddCell(wxHtmlContainerCell *cell, const wxHtmlTag& tag)
 254 {
 255     // Is this cell in new row?
 256     // VS: we can't do it in AddRow, see my comment there
 257     if (m_ActualCol == -1)
 258     {
 259         if (m_ActualRow + 1 > m_NumRows - 1)
 260             ReallocRows(m_ActualRow + 2);
 261         m_ActualRow++;
 262     }
 263
 264     // cells & columns:
 265     do
 266     {
 267         m_ActualCol++;
 268     } while ((m_ActualCol < m_NumCols) &&
 269              (m_CellInfo[m_ActualRow][m_ActualCol].flag != cellFree));
 270
 271     if (m_ActualCol > m_NumCols - 1)
 272         ReallocCols(m_ActualCol + 1);
 273
 274     int r = m_ActualRow, c = m_ActualCol;
 275
 276     m_CellInfo[r][c].cont = cell;
 277     m_CellInfo[r][c].colspan = 1;
 278     m_CellInfo[r][c].rowspan = 1;
 279     m_CellInfo[r][c].flag = cellUsed;
 280     m_CellInfo[r][c].minheight = 0;
 281     m_CellInfo[r][c].valign = wxHTML_ALIGN_TOP;
 282
 283     /* scan for parameters: */
 284
 285     // width:
 286     {
 287         if (tag.HasParam(wxT("WIDTH")))
 288         {
 289             wxString wd = tag.GetParam(wxT("WIDTH"));
 290
 291             if (wd[wd.length()-1] == wxT('%'))
 292             {
 293                 if ( wxSscanf(wd.c_str(), wxT("%i%%"), &m_ColsInfo[c].width) == 1 )
 294                 {
 295                     m_ColsInfo[c].units = wxHTML_UNITS_PERCENT;
 296                 }
 297             }
 298             else
 299             {
 300                 long width;
 301                 if ( wd.ToLong(&width) )
 302                 {
 303                     m_ColsInfo[c].width = (int)(m_PixelScale * (double)width);
 304                     m_ColsInfo[c].units = wxHTML_UNITS_PIXELS;
 305                 }
 306             }
 307         }
 308     }
 309
 310
 311     // spanning:
 312     {
 313         tag.GetParamAsInt(wxT("COLSPAN"), &m_CellInfo[r][c].colspan);
 314         tag.GetParamAsInt(wxT("ROWSPAN"), &m_CellInfo[r][c].rowspan);
 315
 316         // VS: the standard says this about col/rowspan:
 317         //     "This attribute specifies the number of rows spanned by the
 318         //     current cell. The default value of this attribute is one ("1").
 319         //     The value zero ("0") means that the cell spans all rows from the
 320         //     current row to the last row of the table." All mainstream
 321         //     browsers act as if 0==1, though, and so does wxHTML.
 322         if (m_CellInfo[r][c].colspan < 1)
 323             m_CellInfo[r][c].colspan = 1;
 324         if (m_CellInfo[r][c].rowspan < 1)
 325             m_CellInfo[r][c].rowspan = 1;
 326
 327         if ((m_CellInfo[r][c].colspan > 1) || (m_CellInfo[r][c].rowspan > 1))
 328         {
 329             int i, j;
 330
 331             if (r + m_CellInfo[r][c].rowspan > m_NumRows)
 332                 ReallocRows(r + m_CellInfo[r][c].rowspan);
 333             if (c + m_CellInfo[r][c].colspan > m_NumCols)
 334                 ReallocCols(c + m_CellInfo[r][c].colspan);
 335             for (i = r; i < r + m_CellInfo[r][c].rowspan; i++)
 336                 for (j = c; j < c + m_CellInfo[r][c].colspan; j++)
 337                     m_CellInfo[i][j].flag = cellSpan;
 338             m_CellInfo[r][c].flag = cellUsed;
 339         }
 340     }
 341
 342     //background color:
 343     {
 344         wxColour bk = m_rBkg;
 345         if (tag.HasParam(wxT("BGCOLOR")))
 346             tag.GetParamAsColour(wxT("BGCOLOR"), &bk);
 347         if (bk.Ok())
 348             cell->SetBackgroundColour(bk);
 349     }
 350     if (m_Border > 0)
 351         cell->SetBorder(TABLE_BORDER_CLR_2, TABLE_BORDER_CLR_1);
 352
 353     // vertical alignment:
 354     {
 355         wxString valign;
 356         if (tag.HasParam(wxT("VALIGN")))
 357             valign = tag.GetParam(wxT("VALIGN"));
 358         else
 359             valign = m_tValign;
 360         valign.MakeUpper();
 361         if (valign == wxT("TOP"))
 362             m_CellInfo[r][c].valign = wxHTML_ALIGN_TOP;
 363         else if (valign == wxT("BOTTOM"))
 364             m_CellInfo[r][c].valign = wxHTML_ALIGN_BOTTOM;
 365         else m_CellInfo[r][c].valign = wxHTML_ALIGN_CENTER;
 366     }
 367
 368     // nowrap
 369     if (tag.HasParam(wxT("NOWRAP")))
 370         m_CellInfo[r][c].nowrap = true;
 371     else
 372         m_CellInfo[r][c].nowrap = false;
 373
 374     cell->SetIndent(m_Padding, wxHTML_INDENT_ALL, wxHTML_UNITS_PIXELS);
 375 }
 376
 377 void wxHtmlTableCell::ComputeMinMaxWidths()
 378 {
 379     if (m_NumCols == 0 || m_ColsInfo[0].minWidth != wxDefaultCoord) return;
 380
 381     m_MaxTotalWidth = 0;
 382     int percentage = 0;
 383     for (int c = 0; c < m_NumCols; c++)
 384     {
 385         for (int r = 0; r < m_NumRows; r++)
 386         {
 387             cellStruct& cell = m_CellInfo[r][c];
 388             if (cell.flag == cellUsed)
 389             {
 390                 cell.cont->Layout(2*m_Padding + 1);
 391                 int maxWidth = cell.cont->GetMaxTotalWidth();
 392                 int width = cell.nowrap?maxWidth:cell.cont->GetWidth();
 393                 width -= (cell.colspan-1) * m_Spacing;
 394                 maxWidth -= (cell.colspan-1) * m_Spacing;
 395                 // HTML 4.0 says it is acceptable to distribute min/max
 396                 width /= cell.colspan;
 397                 maxWidth /= cell.colspan;
 398                 for (int j = 0; j < cell.colspan; j++) {
 399                     if (width > m_ColsInfo[c+j].minWidth)
 400                         m_ColsInfo[c+j].minWidth = width;
 401                     if (maxWidth > m_ColsInfo[c+j].maxWidth)
 402                         m_ColsInfo[c+j].maxWidth = maxWidth;
 403                 }
 404             }
 405         }
 406         // Calculate maximum table width, required for nested tables
 407         if (m_ColsInfo[c].units == wxHTML_UNITS_PIXELS)
 408             m_MaxTotalWidth += wxMax(m_ColsInfo[c].width, m_ColsInfo[c].minWidth);
 409         else if ((m_ColsInfo[c].units == wxHTML_UNITS_PERCENT) && (m_ColsInfo[c].width != 0))
 410             percentage += m_ColsInfo[c].width;
 411         else
 412             m_MaxTotalWidth += m_ColsInfo[c].maxWidth;
 413     }
 414
 415     if (percentage >= 100)
 416     {
 417         // Table would have infinite length
 418         // Make it ridiculous large
 419         m_MaxTotalWidth = 0xFFFFFF;
 420     }
 421     else
 422         m_MaxTotalWidth = m_MaxTotalWidth * 100 / (100 - percentage);
 423
 424     m_MaxTotalWidth += (m_NumCols + 1) * m_Spacing +  2 * m_Border;
 425 }
 426
 427 void wxHtmlTableCell::Layout(int w)
 428 {
 429     ComputeMinMaxWidths();
 430
 431     wxHtmlCell::Layout(w);
 432
 433     /*
 434
 435     WIDTH ADJUSTING :
 436
 437     */
 438
 439     if (m_WidthFloatUnits == wxHTML_UNITS_PERCENT)
 440     {
 441         if (m_WidthFloat < 0)
 442         {
 443             if (m_WidthFloat < -100)
 444                 m_WidthFloat = -100;
 445             m_Width = (100 + m_WidthFloat) * w / 100;
 446         }
 447         else
 448         {
 449             if (m_WidthFloat > 100)
 450                 m_WidthFloat = 100;
 451             m_Width = m_WidthFloat * w / 100;
 452         }
 453     }
 454     else
 455     {
 456         if (m_WidthFloat < 0) m_Width = w + m_WidthFloat;
 457         else m_Width = m_WidthFloat;
 458     }
 459
 460
 461     /*
 462
 463     LAYOUT :
 464
 465     */
 466
 467     /* 1.  setup columns widths:
 468
 469            The algorithm tries to keep the table size less than w if possible.
 470        */
 471     {
 472         int wpix = m_Width - (m_NumCols + 1) * m_Spacing - 2 * m_Border;  // Available space for cell content
 473         int i, j;
 474
 475         // 1a. setup fixed-width columns:
 476         for (i = 0; i < m_NumCols; i++)
 477             if (m_ColsInfo[i].units == wxHTML_UNITS_PIXELS)
 478             {
 479                 m_ColsInfo[i].pixwidth = wxMax(m_ColsInfo[i].width,
 480                                                m_ColsInfo[i].minWidth);
 481                 wpix -= m_ColsInfo[i].pixwidth;
 482             }
 483
 484         // 1b. Calculate maximum possible width if line wrapping would be disabled
 485         // Recalculate total width if m_WidthFloat is zero to keep tables as small
 486         // as possible.
 487         int maxWidth = 0;
 488         for (i = 0; i < m_NumCols; i++)
 489             if (m_ColsInfo[i].width == 0)
 490             {
 491                 maxWidth += m_ColsInfo[i].maxWidth;
 492             }
 493
 494         if (!m_WidthFloat)
 495         {
 496             // Recalculate table width since no table width was initially given
 497             int newWidth = m_Width - wpix +  maxWidth;
 498
 499             // Make sure that floating-width columns will have the right size.
 500             // Calculate sum of all floating-width columns
 501             int percentage = 0;
 502             for (i = 0; i < m_NumCols; i++)
 503                 if ((m_ColsInfo[i].units == wxHTML_UNITS_PERCENT) && (m_ColsInfo[i].width != 0))
 504                     percentage += m_ColsInfo[i].width;
 505
 506             if (percentage >= 100)
 507                 newWidth = w;
 508             else
 509                 newWidth = newWidth * 100 / (100 - percentage);
 510
 511             newWidth = wxMin(newWidth, w - (m_NumCols + 1) * m_Spacing - 2 * m_Border);
 512             wpix -= m_Width - newWidth;
 513             m_Width = newWidth;
 514         }
 515
 516
 517         // 1c. setup floating-width columns:
 518         int wtemp = wpix;
 519         for (i = 0; i < m_NumCols; i++)
 520             if ((m_ColsInfo[i].units == wxHTML_UNITS_PERCENT) && (m_ColsInfo[i].width != 0))
 521             {
 522                 m_ColsInfo[i].pixwidth = wxMin(m_ColsInfo[i].width, 100) * wpix / 100;
 523
 524                 // Make sure to leave enough space for the other columns
 525                 int minRequired = m_Border;
 526                 for (j = 0; j < m_NumCols; j++)
 527                 {
 528                     if ((m_ColsInfo[j].units == wxHTML_UNITS_PERCENT && j > i) ||
 529                         !m_ColsInfo[j].width)
 530                         minRequired += m_ColsInfo[j].minWidth;
 531                 }
 532                 m_ColsInfo[i].pixwidth = wxMax(wxMin(wtemp - minRequired, m_ColsInfo[i].pixwidth), m_ColsInfo[i].minWidth);
 533
 534                 wtemp -= m_ColsInfo[i].pixwidth;
 535             }
 536        wpix = wtemp; // minimum cells width
 537
 538         // 1d. setup default columns (no width specification supplied):
 539         // The algorithm assigns calculates the maximum possible width if line
 540         // wrapping would be disabled and assigns column width as a fraction
 541         // based upon the maximum width of a column
 542         // FIXME: I'm not sure if this algorithm is conform to HTML standard,
 543         //        though it seems to be much better than the old one
 544
 545         for (i = j = 0; i < m_NumCols; i++)
 546             if (m_ColsInfo[i].width == 0) j++;
 547         if (wpix < m_Border)
 548             wpix = m_Border;
 549
 550         // Assign widths
 551         for (i = 0; i < m_NumCols; i++)
 552             if (m_ColsInfo[i].width == 0)
 553             {
 554                 // Assign with, make sure not to drop below minWidth
 555                 if (maxWidth)
 556                     m_ColsInfo[i].pixwidth = (int)(wpix * (m_ColsInfo[i].maxWidth / (float)maxWidth) + 0.5);
 557                 else
 558                     m_ColsInfo[i].pixwidth = wpix / j;
 559
 560                 // Make sure to leave enough space for the other columns
 561                 int minRequired = 0;
 562                 int r;
 563                 for (r = i + 1; r < m_NumCols; r++)
 564                 {
 565                     if (!m_ColsInfo[r].width)
 566                         minRequired += m_ColsInfo[r].minWidth;
 567                 }
 568                 m_ColsInfo[i].pixwidth = wxMax(wxMin(wpix - minRequired, m_ColsInfo[i].pixwidth), m_ColsInfo[i].minWidth);
 569
 570                 if (maxWidth)
 571                 {
 572                     if (m_ColsInfo[i].pixwidth > (wpix * (m_ColsInfo[i].maxWidth / (float)maxWidth) + 0.5))
 573                     {
 574                         int diff = (int)(m_ColsInfo[i].pixwidth - (wpix * m_ColsInfo[i].maxWidth / (float)maxWidth + 0.5));
 575                         maxWidth += diff - m_ColsInfo[i].maxWidth;
 576                     }
 577                     else
 578                         maxWidth -= m_ColsInfo[i].maxWidth;
 579                 }
 580                 wpix -= m_ColsInfo[i].pixwidth;
 581             }
 582     }
 583
 584     /* 2.  compute positions of columns: */
 585     {
 586         int wpos = m_Spacing + m_Border;
 587         for (int i = 0; i < m_NumCols; i++)
 588         {
 589             m_ColsInfo[i].leftpos = wpos;
 590             wpos += m_ColsInfo[i].pixwidth + m_Spacing;
 591         }
 592
 593         // add the remaining space to the last column
 594         if (m_NumCols > 0 && wpos < m_Width - m_Border)
 595             m_ColsInfo[m_NumCols-1].pixwidth += m_Width - wpos - m_Border;
 596     }
 597
 598     /* 3.  sub-layout all cells: */
 599     {
 600         int *ypos = new int[m_NumRows + 1];
 601
 602         int actcol, actrow;
 603         int fullwid;
 604         wxHtmlContainerCell *actcell;
 605
 606         ypos[0] = m_Spacing + m_Border;
 607         for (actrow = 1; actrow <= m_NumRows; actrow++) ypos[actrow] = -1;
 608         for (actrow = 0; actrow < m_NumRows; actrow++)
 609         {
 610             if (ypos[actrow] == -1) ypos[actrow] = ypos[actrow-1];
 611             // 3a. sub-layout and detect max height:
 612
 613             for (actcol = 0; actcol < m_NumCols; actcol++) {
 614                 if (m_CellInfo[actrow][actcol].flag != cellUsed) continue;
 615                 actcell = m_CellInfo[actrow][actcol].cont;
 616                 fullwid = 0;
 617                 for (int i = actcol; i < m_CellInfo[actrow][actcol].colspan + actcol; i++)
 618                     fullwid += m_ColsInfo[i].pixwidth;
 619                 fullwid += (m_CellInfo[actrow][actcol].colspan - 1) * m_Spacing;
 620                 actcell->SetMinHeight(m_CellInfo[actrow][actcol].minheight, m_CellInfo[actrow][actcol].valign);
 621                 actcell->Layout(fullwid);
 622
 623                 if (ypos[actrow] + actcell->GetHeight() + m_CellInfo[actrow][actcol].rowspan * m_Spacing > ypos[actrow + m_CellInfo[actrow][actcol].rowspan])
 624                     ypos[actrow + m_CellInfo[actrow][actcol].rowspan] =
 625                             ypos[actrow] + actcell->GetHeight() + m_CellInfo[actrow][actcol].rowspan * m_Spacing;
 626             }
 627         }
 628
 629         for (actrow = 0; actrow < m_NumRows; actrow++)
 630         {
 631             // 3b. place cells in row & let'em all have same height:
 632
 633             for (actcol = 0; actcol < m_NumCols; actcol++)
 634             {
 635                 if (m_CellInfo[actrow][actcol].flag != cellUsed) continue;
 636                 actcell = m_CellInfo[actrow][actcol].cont;
 637                 actcell->SetMinHeight(
 638                                  ypos[actrow + m_CellInfo[actrow][actcol].rowspan] - ypos[actrow] -  m_Spacing,
 639                                  m_CellInfo[actrow][actcol].valign);
 640                 fullwid = 0;
 641                 for (int i = actcol; i < m_CellInfo[actrow][actcol].colspan + actcol; i++)
 642                     fullwid += m_ColsInfo[i].pixwidth;
 643                 fullwid += (m_CellInfo[actrow][actcol].colspan - 1) * m_Spacing;
 644                 actcell->Layout(fullwid);
 645                 actcell->SetPos(m_ColsInfo[actcol].leftpos, ypos[actrow]);
 646             }
 647         }
 648         m_Height = ypos[m_NumRows] + m_Border;
 649         delete[] ypos;
 650     }
 651
 652     /* 4. adjust table's width if it was too small: */
 653     if (m_NumCols > 0)
 654     {
 655         int twidth = m_ColsInfo[m_NumCols-1].leftpos +
 656                      m_ColsInfo[m_NumCols-1].pixwidth + m_Spacing + m_Border;
 657         if (twidth > m_Width)
 658             m_Width = twidth;
 659     }
 660 }
 661
 662
 663
 664
 665
 666
 667 //-----------------------------------------------------------------------------
 668 // The tables handler:
 669 //-----------------------------------------------------------------------------
 670
 671
 672 TAG_HANDLER_BEGIN(TABLE, "TABLE,TR,TD,TH")
 673
 674     TAG_HANDLER_VARS
 675         wxHtmlTableCell* m_Table;
 676         wxString m_tAlign, m_rAlign;
 677         wxHtmlContainerCell *m_enclosingContainer;
 678
 679     TAG_HANDLER_CONSTR(TABLE)
 680     {
 681         m_Table = NULL;
 682         m_enclosingContainer = NULL;
 683         m_tAlign = m_rAlign = wxEmptyString;
 684     }
 685
 686
 687     TAG_HANDLER_PROC(tag)
 688     {
 689         wxHtmlContainerCell *c;
 690
 691         // new table started, backup upper-level table (if any) and create new:
 692         if (tag.GetName() == wxT("TABLE"))
 693         {
 694             wxHtmlTableCell *oldt = m_Table;
 695
 696             wxHtmlContainerCell *oldEnclosing = m_enclosingContainer;
 697             m_enclosingContainer = c = m_WParser->OpenContainer();
 698
 699             m_Table = new wxHtmlTableCell(c, tag, m_WParser->GetPixelScale());
 700
 701             // width:
 702             {
 703                 if (tag.HasParam(wxT("WIDTH")))
 704                 {
 705                     wxString wd = tag.GetParam(wxT("WIDTH"));
 706
 707                     if (wd[wd.length()-1] == wxT('%'))
 708                     {
 709                         int width = 0;
 710                         wxSscanf(wd.c_str(), wxT("%i%%"), &width);
 711                         m_Table->SetWidthFloat(width, wxHTML_UNITS_PERCENT);
 712                     }
 713                     else
 714                     {
 715                         int width = 0;
 716                         wxSscanf(wd.c_str(), wxT("%i"), &width);
 717                         m_Table->SetWidthFloat((int)(m_WParser->GetPixelScale() * width), wxHTML_UNITS_PIXELS);
 718                     }
 719                 }
 720                 else
 721                     m_Table->SetWidthFloat(0, wxHTML_UNITS_PIXELS);
 722             }
 723             int oldAlign = m_WParser->GetAlign();
 724             m_tAlign = wxEmptyString;
 725             if (tag.HasParam(wxT("ALIGN")))
 726                 m_tAlign = tag.GetParam(wxT("ALIGN"));
 727
 728             ParseInner(tag);
 729
 730             m_WParser->SetAlign(oldAlign);
 731             m_WParser->SetContainer(m_enclosingContainer);
 732             m_WParser->CloseContainer();
 733
 734             m_Table = oldt;
 735             m_enclosingContainer = oldEnclosing;
 736
 737             return true; // ParseInner() called
 738         }
 739
 740
 741         else if (m_Table)
 742         {
 743             // new row in table
 744             if (tag.GetName() == wxT("TR"))
 745             {
 746                 m_Table->AddRow(tag);
 747                 m_rAlign = m_tAlign;
 748                 if (tag.HasParam(wxT("ALIGN")))
 749                     m_rAlign = tag.GetParam(wxT("ALIGN"));
 750             }
 751
 752             // new cell
 753             else
 754             {
 755                 c = m_WParser->SetContainer(new wxHtmlContainerCell(m_Table));
 756                 m_Table->AddCell(c, tag);
 757
 758                 m_WParser->OpenContainer();
 759
 760                 const bool isHeader = tag.GetName() == wxT("TH");
 761
 762                 wxString als;
 763                 if (tag.HasParam(wxT("ALIGN")))
 764                     als = tag.GetParam(wxT("ALIGN"));
 765                 else
 766                     als = m_rAlign;
 767                 als.MakeUpper();
 768
 769                 if (als == wxT("RIGHT"))
 770                     m_WParser->SetAlign(wxHTML_ALIGN_RIGHT);
 771                 else if (als == wxT("LEFT"))
 772                     m_WParser->SetAlign(wxHTML_ALIGN_LEFT);
 773                 else if (als == wxT("CENTER"))
 774                     m_WParser->SetAlign(wxHTML_ALIGN_CENTER);
 775                 else // use default alignment
 776                     m_WParser->SetAlign(isHeader ? wxHTML_ALIGN_CENTER
 777                                                  : wxHTML_ALIGN_LEFT);
 778
 779                 m_WParser->OpenContainer();
 780
 781                 // the header should be rendered in bold by default
 782                 int boldOld = 0;
 783                 if ( isHeader )
 784                 {
 785                     boldOld = m_WParser->GetFontBold();
 786                     m_WParser->SetFontBold(true);
 787                     m_WParser->GetContainer()->InsertCell(
 788                         new wxHtmlFontCell(m_WParser->CreateCurrentFont()));
 789                 }
 790
 791                 ParseInner(tag);
 792
 793                 if ( isHeader )
 794                 {
 795                     m_WParser->SetFontBold(boldOld);
 796                     m_WParser->GetContainer()->InsertCell(
 797                         new wxHtmlFontCell(m_WParser->CreateCurrentFont()));
 798                 }
 799
 800                 // set the current container back to the enclosing one so that
 801                 // text outside of <th> and <td> isn't included in any cell
 802                 // (this happens often enough in practice because it's common
 803                 // to use whitespace between </td> and the next <td>):
 804                 m_WParser->SetContainer(m_enclosingContainer);
 805
 806                 return true; // ParseInner() called
 807             }
 808         }
 809
 810         return false;
 811     }
 812
 813 TAG_HANDLER_END(TABLE)
 814
 815
 816
 817
 818
 819 TAGS_MODULE_BEGIN(Tables)
 820
 821     TAGS_MODULE_ADD(TABLE)
 822
 823 TAGS_MODULE_END(Tables)
 824
 825
 826 #endif