src/mathed/InsetMathGrid.cpp

   1 /**
   2  * \file InsetMathGrid.cpp
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author André Pönitz
   7  *
   8  * Full author contact details are available in file CREDITS.
   9  */
  10
  11 #include <config.h>
  12 #include <algorithm>
  13
  14 #include "InsetMathGrid.h"
  15
  16 #include "InsetMathUnknown.h"
  17 #include "MathData.h"
  18 #include "MathParser.h"
  19 #include "MathStream.h"
  20 #include "MetricsInfo.h"
  21
  22 #include "Buffer.h"
  23 #include "BufferParams.h"
  24 #include "BufferView.h"
  25 #include "CutAndPaste.h"
  26 #include "FuncStatus.h"
  27 #include "Cursor.h"
  28 #include "FuncRequest.h"
  29 #include "LaTeXFeatures.h"
  30
  31 #include "frontends/Clipboard.h"
  32 #include "frontends/Painter.h"
  33
  34 #include "support/debug.h"
  35 #include "support/docstream.h"
  36 #include "support/gettext.h"
  37 #include "support/lstrings.h"
  38
  39 #include "support/lassert.h"
  40
  41 #include <sstream>
  42
  43 using namespace std;
  44 using namespace lyx::support;
  45
  46
  47
  48 namespace lyx {
  49
  50 static docstring verboseHLine(int n)
  51 {
  52         docstring res;
  53         for (int i = 0; i < n; ++i)
  54                 res += "\\hline";
  55         if (n)
  56                 res += ' ';
  57         return res;
  58 }
  59
  60
  61 static int extractInt(istream & is)
  62 {
  63         int num = 1;
  64         is >> num;
  65         return (num == 0) ? 1 : num;
  66 }
  67
  68
  69 static void resetGrid(InsetMathGrid & grid)
  70 {
  71         while (grid.ncols() > 1)
  72                 grid.delCol(grid.ncols() - 1);
  73         while (grid.nrows() > 1)
  74                 grid.delRow(grid.nrows() - 1);
  75         grid.cell(0).erase(0, grid.cell(0).size());
  76         grid.setDefaults();
  77 }
  78
  79
  80
  81 //////////////////////////////////////////////////////////////
  82
  83
  84 InsetMathGrid::CellInfo::CellInfo()
  85         : multi_(CELL_NORMAL), glue_(0), begin_(0), end_(0)
  86 {}
  87
  88
  89
  90 //////////////////////////////////////////////////////////////
  91
  92
  93 InsetMathGrid::RowInfo::RowInfo()
  94         : descent_(0), ascent_(0), offset_(0), lines_(0), skip_(0),
  95           allow_newpage_(true)
  96 {}
  97
  98
  99
 100 int InsetMathGrid::RowInfo::skipPixels(MetricsInfo const & mi) const
 101 {
 102         return crskip_.inPixels(mi.base);
 103 }
 104
 105
 106
 107 //////////////////////////////////////////////////////////////
 108
 109
 110 InsetMathGrid::ColInfo::ColInfo()
 111         : align_('c'), width_(0), offset_(0), lines_(0), skip_(0)
 112 {}
 113
 114
 115 //////////////////////////////////////////////////////////////
 116
 117
 118 InsetMathGrid::InsetMathGrid(Buffer * buf)
 119         : InsetMathNest(buf, 1),
 120           rowinfo_(1 + 1),
 121                 colinfo_(1 + 1),
 122                 cellinfo_(1),
 123                 v_align_('c')
 124 {
 125         setDefaults();
 126 }
 127
 128
 129 InsetMathGrid::InsetMathGrid(Buffer * buf, col_type m, row_type n)
 130         : InsetMathNest(buf, m * n),
 131           rowinfo_(n + 1),
 132                 colinfo_(m + 1),
 133                 cellinfo_(m * n),
 134                 v_align_('c')
 135 {
 136         setDefaults();
 137 }
 138
 139
 140 InsetMathGrid::InsetMathGrid(Buffer * buf, col_type m, row_type n, char v,
 141         docstring const & h)
 142         : InsetMathNest(buf, m * n),
 143           rowinfo_(n + 1),
 144           colinfo_(m + 1),
 145                 cellinfo_(m * n),
 146                 v_align_(v)
 147 {
 148         setDefaults();
 149         setVerticalAlignment(v);
 150         setHorizontalAlignments(h);
 151 }
 152
 153
 154 Inset * InsetMathGrid::clone() const
 155 {
 156         return new InsetMathGrid(*this);
 157 }
 158
 159
 160 InsetMath::idx_type InsetMathGrid::index(row_type row, col_type col) const
 161 {
 162         return col + ncols() * row;
 163 }
 164
 165
 166 void InsetMathGrid::setDefaults()
 167 {
 168         if (ncols() <= 0)
 169                 lyxerr << "positive number of columns expected" << endl;
 170         //if (nrows() <= 0)
 171         //      lyxerr << "positive number of rows expected" << endl;
 172         for (col_type col = 0; col < ncols(); ++col) {
 173                 colinfo_[col].align_ = defaultColAlign(col);
 174                 colinfo_[col].skip_  = defaultColSpace(col);
 175                 colinfo_[col].special_.clear();
 176         }
 177         for (idx_type idx = 0; idx < nargs(); ++idx)
 178                 cellinfo_[idx].multi_ = CELL_NORMAL;
 179 }
 180
 181
 182 bool InsetMathGrid::interpretString(Cursor & cur, docstring const & str)
 183 {
 184         if (str == "\\hline") {
 185                 FuncRequest fr = FuncRequest(LFUN_TABULAR_FEATURE, "add-hline-above");
 186                 FuncStatus status;
 187                 if (getStatus(cur, fr, status)) {
 188                         if (status.enabled()) {
 189                                 rowinfo_[cur.row()].lines_++;
 190                                 return true;
 191                         }
 192                 }
 193         }
 194         return InsetMathNest::interpretString(cur, str);
 195 }
 196
 197
 198 void InsetMathGrid::setHorizontalAlignments(docstring const & hh)
 199 {
 200         col_type col = 0;
 201         for (docstring::const_iterator it = hh.begin(); it != hh.end(); ++it) {
 202                 char_type c = *it;
 203                 if (c == '|') {
 204                         colinfo_[col].lines_++;
 205                 } else if ((c == 'p' || c == 'm' || c == 'b'||
 206                             c == '!' || c == '@' || c == '>' || c == '<') &&
 207                            it + 1 != hh.end() && *(it + 1) == '{') {
 208                         // @{decl.} and p{width} are standard LaTeX, the
 209                         // others are extensions by array.sty
 210                         bool const newcolumn = c == 'p' || c == 'm' || c == 'b';
 211                         if (newcolumn) {
 212                                 // this declares a new column
 213                                 if (col >= ncols())
 214                                         // Only intercolumn stuff is allowed
 215                                         // in the last dummy column
 216                                         break;
 217                                 colinfo_[col].align_ = 'l';
 218                         } else {
 219                                 // this is intercolumn stuff
 220                                 if (colinfo_[col].special_.empty())
 221                                         // Overtake possible lines
 222                                         colinfo_[col].special_ = docstring(colinfo_[col].lines_, '|');
 223                         }
 224                         int brace_open = 0;
 225                         int brace_close = 0;
 226                         while (it != hh.end()) {
 227                                 c = *it;
 228                                 colinfo_[col].special_ += c;
 229                                 if (c == '{')
 230                                         ++brace_open;
 231                                 else if (c == '}')
 232                                         ++brace_close;
 233                                 ++it;
 234                                 if (brace_open > 0 && brace_open == brace_close)
 235                                         break;
 236                         }
 237                         --it;
 238                         if (newcolumn) {
 239                                 colinfo_[col].lines_ = count(
 240                                         colinfo_[col].special_.begin(),
 241                                         colinfo_[col].special_.end(), '|');
 242                                 LYXERR(Debug::MATHED, "special column separator: `"
 243                                         << to_utf8(colinfo_[col].special_) << '\'');
 244                                 ++col;
 245                                 colinfo_[col].lines_ = 0;
 246                                 colinfo_[col].special_.clear();
 247                         }
 248                 } else if (col >= ncols()) {
 249                         // Only intercolumn stuff is allowed in the last
 250                         // dummy column
 251                         break;
 252                 } else if (c == 'c' || c == 'l' || c == 'r') {
 253                         colinfo_[col].align_ = static_cast<char>(c);
 254                         if (!colinfo_[col].special_.empty()) {
 255                                 colinfo_[col].special_ += c;
 256                                 colinfo_[col].lines_ = count(
 257                                                 colinfo_[col].special_.begin(),
 258                                                 colinfo_[col].special_.end(), '|');
 259                                 LYXERR(Debug::MATHED, "special column separator: `"
 260                                         << to_utf8(colinfo_[col].special_) << '\'');
 261                         }
 262                         ++col;
 263                         colinfo_[col].lines_ = 0;
 264                         colinfo_[col].special_.clear();
 265                 } else {
 266                         lyxerr << "unknown column separator: '" << c << "'" << endl;
 267                 }
 268         }
 269
 270 /*
 271         col_type n = hh.size();
 272         if (n > ncols())
 273                 n = ncols();
 274         for (col_type col = 0; col < n; ++col)
 275                 colinfo_[col].align_ = hh[col];
 276 */
 277 }
 278
 279
 280 InsetMathGrid::col_type InsetMathGrid::guessColumns(docstring const & hh)
 281 {
 282         col_type col = 0;
 283         for (docstring::const_iterator it = hh.begin(); it != hh.end(); ++it)
 284                 if (*it == 'c' || *it == 'l' || *it == 'r'||
 285                     *it == 'p' || *it == 'm' || *it == 'b')
 286                         ++col;
 287         // let's have at least one column, even if we did not recognize its
 288         // alignment
 289         if (col == 0)
 290                 col = 1;
 291         return col;
 292 }
 293
 294
 295 void InsetMathGrid::setHorizontalAlignment(char h, col_type col)
 296 {
 297         colinfo_[col].align_ = h;
 298         if (!colinfo_[col].special_.empty()) {
 299                 char_type & c = colinfo_[col].special_[colinfo_[col].special_.size() - 1];
 300                 if (c == 'l' || c == 'c' || c == 'r')
 301                         c = h;
 302         }
 303         // FIXME: Change alignment of p, m and b columns, too
 304 }
 305
 306
 307 char InsetMathGrid::horizontalAlignment(col_type col) const
 308 {
 309         return colinfo_[col].align_;
 310 }
 311
 312
 313 docstring InsetMathGrid::horizontalAlignments() const
 314 {
 315         docstring res;
 316         for (col_type col = 0; col < ncols(); ++col) {
 317                 if (colinfo_[col].special_.empty()) {
 318                         res += docstring(colinfo_[col].lines_, '|');
 319                         res += colinfo_[col].align_;
 320                 } else
 321                         res += colinfo_[col].special_;
 322         }
 323         if (colinfo_[ncols()].special_.empty())
 324                 return res + docstring(colinfo_[ncols()].lines_, '|');
 325         return res + colinfo_[ncols()].special_;
 326 }
 327
 328
 329 void InsetMathGrid::setVerticalAlignment(char c)
 330 {
 331         v_align_ = c;
 332 }
 333
 334
 335 char InsetMathGrid::verticalAlignment() const
 336 {
 337         return v_align_;
 338 }
 339
 340
 341 InsetMathGrid::col_type InsetMathGrid::ncols() const
 342 {
 343         return colinfo_.size() - 1;
 344 }
 345
 346
 347 InsetMathGrid::row_type InsetMathGrid::nrows() const
 348 {
 349         return rowinfo_.size() - 1;
 350 }
 351
 352
 353 InsetMathGrid::col_type InsetMathGrid::col(idx_type idx) const
 354 {
 355         return idx % ncols();
 356 }
 357
 358
 359 InsetMathGrid::row_type InsetMathGrid::row(idx_type idx) const
 360 {
 361         return idx / ncols();
 362 }
 363
 364
 365 InsetMathGrid::col_type InsetMathGrid::ncellcols(idx_type idx) const
 366 {
 367         col_type cols = 1;
 368         if (cellinfo_[idx].multi_ == CELL_NORMAL)
 369                 return cols;
 370         // If the cell at idx is already CELL_PART_OF_MULTICOLUMN we return
 371         // the number of remaining columns, not the ones of the complete
 372         // multicolumn cell. This makes it possible to always go to the next
 373         // cell with idx + ncellcols(idx) - 1.
 374         row_type const r = row(idx);
 375         while (idx+cols < nargs() && row(idx+cols) == r &&
 376                cellinfo_[idx+cols].multi_ == CELL_PART_OF_MULTICOLUMN)
 377                 cols++;
 378         return cols;
 379 }
 380
 381
 382 void InsetMathGrid::vcrskip(Length const & crskip, row_type row)
 383 {
 384         rowinfo_[row].crskip_ = crskip;
 385 }
 386
 387
 388 Length InsetMathGrid::vcrskip(row_type row) const
 389 {
 390         return rowinfo_[row].crskip_;
 391 }
 392
 393
 394 void InsetMathGrid::metrics(MetricsInfo & mi, Dimension & dim) const
 395 {
 396         // let the cells adjust themselves
 397         for (idx_type i = 0; i < nargs(); ++i) {
 398                 if (cellinfo_[i].multi_ != CELL_PART_OF_MULTICOLUMN) {
 399                         Dimension dimc;
 400                         cell(i).metrics(mi, dimc);
 401                 }
 402         }
 403
 404         BufferView & bv = *mi.base.bv;
 405
 406         // compute absolute sizes of vertical structure
 407         for (row_type row = 0; row < nrows(); ++row) {
 408                 int asc  = 0;
 409                 int desc = 0;
 410                 for (col_type col = 0; col < ncols(); ++col) {
 411                         idx_type const i = index(row, col);
 412                         if (cellinfo_[i].multi_ != CELL_PART_OF_MULTICOLUMN) {
 413                                 Dimension const & dimc = cell(i).dimension(bv);
 414                                 asc  = max(asc,  dimc.asc);
 415                                 desc = max(desc, dimc.des);
 416                         }
 417                 }
 418                 rowinfo_[row].ascent_  = asc;
 419                 rowinfo_[row].descent_ = desc;
 420         }
 421         rowinfo_[0].ascent_       += hlinesep() * rowinfo_[0].lines_;
 422         rowinfo_[nrows()].ascent_  = 0;
 423         rowinfo_[nrows()].descent_ = 0;
 424
 425         // compute vertical offsets
 426         rowinfo_[0].offset_ = 0;
 427         for (row_type row = 1; row <= nrows(); ++row) {
 428                 rowinfo_[row].offset_ =
 429                         rowinfo_[row - 1].offset_ +
 430                         rowinfo_[row - 1].descent_ +
 431                         rowinfo_[row - 1].skipPixels(mi) +
 432                         rowsep() +
 433                         rowinfo_[row].lines_ * hlinesep() +
 434                         rowinfo_[row].ascent_;
 435         }
 436
 437         // adjust vertical offset
 438         int h = 0;
 439         switch (v_align_) {
 440                 case 't':
 441                         h = 0;
 442                         break;
 443                 case 'b':
 444                         h = rowinfo_[nrows() - 1].offset_;
 445                         break;
 446                 default:
 447                         h = rowinfo_[nrows() - 1].offset_ / 2;
 448         }
 449         for (row_type row = 0; row <= nrows(); ++row)
 450                 rowinfo_[row].offset_ -= h;
 451
 452
 453         // multicolumn cell widths, as a map from first column to width in a
 454         // vector of last columns.
 455         // This is only used if the grid has more than one row, since for
 456         // one-row grids multicolumn cells do not need special handling
 457         vector<map<col_type, int> > mcolwidths(ncols());
 458
 459         // compute absolute sizes of horizontal structure
 460         for (col_type col = 0; col < ncols(); ++col) {
 461                 int wid = 0;
 462                 for (row_type row = 0; row < nrows(); ++row) {
 463                         idx_type const i = index(row, col);
 464                         if (cellinfo_[i].multi_ != CELL_PART_OF_MULTICOLUMN) {
 465                                 int const w = cell(i).dimension(bv).wid;
 466                                 col_type const cols = ncellcols(i);
 467                                 if (cols > 1 && nrows() > 1) {
 468                                         col_type last = col+cols-1;
 469                                         LASSERT(last < ncols(), last = ncols()-1);
 470                                         map<col_type, int>::iterator it =
 471                                                 mcolwidths[last].find(col);
 472                                         if (it == mcolwidths[last].end())
 473                                                 mcolwidths[last][col] = w;
 474                                         else
 475                                                 it->second = max(it->second, w);
 476                                 } else
 477                                         wid = max(wid, w);
 478                         }
 479                 }
 480                 colinfo_[col].width_ = wid;
 481         }
 482         colinfo_[ncols()].width_  = 0;
 483
 484         // compute horizontal offsets
 485         colinfo_[0].offset_ = border();
 486         for (col_type col = 1; col <= ncols(); ++col) {
 487                 colinfo_[col].offset_ =
 488                         colinfo_[col - 1].offset_ +
 489                         colinfo_[col - 1].width_ +
 490                         displayColSpace(col - 1) +
 491                         colsep() +
 492                         colinfo_[col].lines_ * vlinesep();
 493         }
 494
 495         // increase column widths for multicolumn cells if needed
 496         // FIXME: multicolumn lines are not yet considered
 497         for (col_type last = 0; last < ncols(); ++last) {
 498                 map<col_type, int> const & widths = mcolwidths[last];
 499                 // We increase the width of the last column of the multicol
 500                 // cell (some sort of left alignment). Since we iterate through
 501                 // the last and the first columns from left to right, we ensure
 502                 // that increased widths of previous columns are correctly
 503                 // taken into account for later columns, thus preventing
 504                 // unneeded width increasing.
 505                 for (map<col_type, int>::const_iterator it = widths.begin();
 506                      it != widths.end(); ++it) {
 507                         int const wid = it->second;
 508                         col_type const first = it->first;
 509                         int const nextoffset =
 510                                 colinfo_[first].offset_ +
 511                                 wid +
 512                                 displayColSpace(last) +
 513                                 colsep() +
 514                                 colinfo_[last+1].lines_ * vlinesep();
 515                         int const dx = nextoffset - colinfo_[last+1].offset_;
 516                         if (dx > 0) {
 517                                 colinfo_[last].width_ += dx;
 518                                 for (col_type col = last + 1; col <= ncols(); ++col)
 519                                         colinfo_[col].offset_ += dx;
 520                         }
 521                 }
 522         }
 523
 524
 525         dim.wid = colinfo_[ncols() - 1].offset_
 526                 + colinfo_[ncols() - 1].width_
 527                 + vlinesep() * colinfo_[ncols()].lines_
 528                 + border();
 529
 530         dim.asc = - rowinfo_[0].offset_
 531                 + rowinfo_[0].ascent_
 532                 + hlinesep() * rowinfo_[0].lines_
 533                 + border();
 534
 535         dim.des = rowinfo_[nrows() - 1].offset_
 536                 + rowinfo_[nrows() - 1].descent_
 537                 + hlinesep() * rowinfo_[nrows()].lines_
 538                 + border();
 539
 540
 541 /*
 542         // Increase ws_[i] for 'R' columns (except the first one)
 543         for (int i = 1; i < nc_; ++i)
 544                 if (align_[i] == 'R')
 545                         ws_[i] += 10 * df_width;
 546         // Increase ws_[i] for 'C' column
 547         if (align_[0] == 'C')
 548                 if (ws_[0] < 7 * workwidth / 8)
 549                         ws_[0] = 7 * workwidth / 8;
 550
 551         // Adjust local tabs
 552         width = colsep();
 553         for (cxrow = row_.begin(); cxrow; ++cxrow) {
 554                 int rg = COLSEP;
 555                 int lf = 0;
 556                 for (int i = 0; i < nc_; ++i) {
 557                         bool isvoid = false;
 558                         if (cxrow->getTab(i) <= 0) {
 559                                 cxrow->setTab(i, df_width);
 560                                 isvoid = true;
 561                         }
 562                         switch (align_[i]) {
 563                         case 'l':
 564                                 lf = 0;
 565                                 break;
 566                         case 'c':
 567                                 lf = (ws_[i] - cxrow->getTab(i))/2;
 568                                 break;
 569                         case 'r':
 570                         case 'R':
 571                                 lf = ws_[i] - cxrow->getTab(i);
 572                                 break;
 573                         case 'C':
 574                                 if (cxrow == row_.begin())
 575                                         lf = 0;
 576                                 else if (cxrow.is_last())
 577                                         lf = ws_[i] - cxrow->getTab(i);
 578                                 else
 579                                         lf = (ws_[i] - cxrow->getTab(i))/2;
 580                                 break;
 581                         }
 582                         int const ww = (isvoid) ? lf : lf + cxrow->getTab(i);
 583                         cxrow->setTab(i, lf + rg);
 584                         rg = ws_[i] - ww + colsep();
 585                         if (cxrow == row_.begin())
 586                                 width += ws_[i] + colsep();
 587                 }
 588                 cxrow->setBaseline(cxrow->getBaseline() - ascent);
 589         }
 590 */
 591         metricsMarkers2(dim);
 592         // Cache the inset dimension.
 593         setDimCache(mi, dim);
 594 }
 595
 596
 597 void InsetMathGrid::draw(PainterInfo & pi, int x, int y) const
 598 {
 599         drawWithMargin(pi, x, y, 1, 1);
 600 }
 601
 602
 603 void InsetMathGrid::drawWithMargin(PainterInfo & pi, int x, int y,
 604         int lmargin, int rmargin) const
 605 {
 606         Dimension const dim = dimension(*pi.base.bv);
 607         BufferView const & bv = *pi.base.bv;
 608
 609         for (idx_type idx = 0; idx < nargs(); ++idx) {
 610                 if (cellinfo_[idx].multi_ != CELL_PART_OF_MULTICOLUMN) {
 611                         cell(idx).draw(pi,
 612                                 x + lmargin + cellXOffset(bv, idx),
 613                                 y + cellYOffset(idx));
 614
 615                         // draw inner lines cell by cell because of possible multicolumns
 616                         // FIXME: multicolumn lines are not yet considered
 617                         row_type const r = row(idx);
 618                         col_type const c = col(idx);
 619                         if (r > 0 && r < nrows()) {
 620                                 for (unsigned int i = 0; i < rowinfo_[r].lines_; ++i) {
 621                                         int yy = y + rowinfo_[r].offset_
 622                                                 - rowinfo_[r].ascent_
 623                                                 - i * hlinesep()
 624                                                 - hlinesep()/2 - rowsep()/2;
 625                                         pi.pain.line(
 626                                                 x + lmargin + colinfo_[c].offset_,
 627                                                 yy,
 628                                                 x + lmargin + colinfo_[c+1].offset_,
 629                                                 yy, Color_foreground);
 630                                 }
 631                         }
 632                         if (c > 0 && c < ncols()) {
 633                                 for (unsigned int i = 0; i < colinfo_[c].lines_; ++i) {
 634                                         int xx = x + lmargin
 635                                                 + colinfo_[c].offset_
 636                                                 - i * vlinesep()
 637                                                 - vlinesep()/2 - colsep()/2;
 638                                         pi.pain.line(xx,
 639                                                 rowinfo_[r].offset_ - rowinfo_[r].ascent_,
 640                                                 xx,
 641                                                 rowinfo_[r].offset_ + rowinfo_[r].descent_,
 642                                                 Color_foreground);
 643                                 }
 644                         }
 645                 }
 646         }
 647
 648         // draw outer lines in one go
 649         for (row_type row = 0; row <= nrows(); row += nrows())
 650                 for (unsigned int i = 0; i < rowinfo_[row].lines_; ++i) {
 651                         int yy = y + rowinfo_[row].offset_ - rowinfo_[row].ascent_
 652                                 - i * hlinesep() - hlinesep()/2 - rowsep()/2;
 653                         pi.pain.line(x + lmargin + 1, yy,
 654                                      x + dim.width() - rmargin - 1, yy,
 655                                      Color_foreground);
 656                 }
 657
 658         for (col_type col = 0; col <= ncols(); col += ncols())
 659                 for (unsigned int i = 0; i < colinfo_[col].lines_; ++i) {
 660                         int xx = x + lmargin + colinfo_[col].offset_
 661                                 - i * vlinesep() - vlinesep()/2 - colsep()/2;
 662                         pi.pain.line(xx, y - dim.ascent() + 1,
 663                                      xx, y + dim.descent() - 1,
 664                                      Color_foreground);
 665                 }
 666         drawMarkers2(pi, x, y);
 667 }
 668
 669
 670 void InsetMathGrid::metricsT(TextMetricsInfo const & mi, Dimension & dim) const
 671 {
 672         // let the cells adjust themselves
 673         for (idx_type i = 0; i < nargs(); ++i)
 674                 if (cellinfo_[i].multi_ != CELL_PART_OF_MULTICOLUMN)
 675                         cell(i).metricsT(mi, dim);
 676
 677         // compute absolute sizes of vertical structure
 678         for (row_type row = 0; row < nrows(); ++row) {
 679                 int asc  = 0;
 680                 int desc = 0;
 681                 for (col_type col = 0; col < ncols(); ++col) {
 682                         idx_type const i = index(row, col);
 683                         if (cellinfo_[i].multi_ != CELL_PART_OF_MULTICOLUMN) {
 684                                 //MathData const & c = cell(i);
 685                                 // FIXME: BROKEN!
 686                                 Dimension dimc;
 687                                 asc  = max(asc,  dimc.ascent());
 688                                 desc = max(desc, dimc.descent());
 689                         }
 690                 }
 691                 rowinfo_[row].ascent_  = asc;
 692                 rowinfo_[row].descent_ = desc;
 693         }
 694         //rowinfo_[0].ascent_       += hlinesep() * rowinfo_[0].lines_;
 695         rowinfo_[nrows()].ascent_  = 0;
 696         rowinfo_[nrows()].descent_ = 0;
 697
 698         // compute vertical offsets
 699         rowinfo_[0].offset_ = 0;
 700         for (row_type row = 1; row <= nrows(); ++row) {
 701                 rowinfo_[row].offset_  =
 702                         rowinfo_[row - 1].offset_  +
 703                         rowinfo_[row - 1].descent_ +
 704                         //rowinfo_[row - 1].skipPixels(mi) +
 705                         1 + //rowsep() +
 706                         //rowinfo_[row].lines_ * hlinesep() +
 707                         rowinfo_[row].ascent_;
 708         }
 709
 710         // adjust vertical offset
 711         int h = 0;
 712         switch (v_align_) {
 713                 case 't':
 714                         h = 0;
 715                         break;
 716                 case 'b':
 717                         h = rowinfo_[nrows() - 1].offset_;
 718                         break;
 719                 default:
 720                         h = rowinfo_[nrows() - 1].offset_ / 2;
 721         }
 722         for (row_type row = 0; row <= nrows(); ++row)
 723                 rowinfo_[row].offset_ -= h;
 724
 725
 726         // compute absolute sizes of horizontal structure
 727         for (col_type col = 0; col < ncols(); ++col) {
 728                 int wid = 0;
 729                 for (row_type row = 0; row < nrows(); ++row) {
 730                         // FIXME: BROKEN!
 731                         //idx_type const i = index(row, col);
 732                         //if (cellinfo_[i].multi_ != CELL_PART_OF_MULTICOLUMN)
 733                         //      wid = max(wid, cell(i).width());
 734                 }
 735                 colinfo_[col].width_ = wid;
 736         }
 737         colinfo_[ncols()].width_  = 0;
 738
 739         // compute horizontal offsets
 740         colinfo_[0].offset_ = border();
 741         for (col_type col = 1; col <= ncols(); ++col) {
 742                 colinfo_[col].offset_ =
 743                         colinfo_[col - 1].offset_ +
 744                         colinfo_[col - 1].width_ +
 745                         displayColSpace(col - 1) +
 746                         1 ; //colsep() +
 747                         //colinfo_[col].lines_ * vlinesep();
 748         }
 749
 750
 751         dim.wid  =  colinfo_[ncols() - 1].offset_
 752                        + colinfo_[ncols() - 1].width_
 753                  //+ vlinesep() * colinfo_[ncols()].lines_
 754                        + 2;
 755
 756         dim.asc  = -rowinfo_[0].offset_
 757                        + rowinfo_[0].ascent_
 758                  //+ hlinesep() * rowinfo_[0].lines_
 759                        + 1;
 760
 761         dim.des  =  rowinfo_[nrows() - 1].offset_
 762                        + rowinfo_[nrows() - 1].descent_
 763                  //+ hlinesep() * rowinfo_[nrows()].lines_
 764                        + 1;
 765 }
 766
 767
 768 void InsetMathGrid::drawT(TextPainter & /*pain*/, int /*x*/, int /*y*/) const
 769 {
 770 //      for (idx_type idx = 0; idx < nargs(); ++idx)
 771 //              if (cellinfo_[idx].multi_ != CELL_PART_OF_MULTICOLUMN)
 772 //                      cell(idx).drawT(pain, x + cellXOffset(idx), y + cellYOffset(idx));
 773 }
 774
 775
 776 void InsetMathGrid::updateBuffer(ParIterator const & it, UpdateType utype)
 777 {
 778         // pass down
 779         for (idx_type idx = 0; idx < nargs(); ++idx)
 780                 if (cellinfo_[idx].multi_ != CELL_PART_OF_MULTICOLUMN)
 781                         cell(idx).updateBuffer(it, utype);
 782 }
 783
 784
 785 docstring InsetMathGrid::eolString(row_type row, bool fragile,
 786                 bool /*latex*/, bool last_eoln) const
 787 {
 788         docstring eol;
 789
 790         if (!rowinfo_[row].crskip_.zero())
 791                 eol += '[' + from_utf8(rowinfo_[row].crskip_.asLatexString()) + ']';
 792         else if(!rowinfo_[row].allow_newpage_)
 793                 eol += '*';
 794
 795         // make sure an upcoming '[' does not break anything
 796         if (row + 1 < nrows()) {
 797                 MathData const & c = cell(index(row + 1, 0));
 798                 if (!c.empty() && c.front()->getChar() == '[')
 799                         //eol += "[0pt]";
 800                         eol += "{}";
 801         }
 802
 803         // only add \\ if necessary
 804         if (eol.empty() && row + 1 == nrows() && (nrows() == 1 || !last_eoln))
 805                 return docstring();
 806
 807         return (fragile ? "\\protect\\\\" : "\\\\") + eol;
 808 }
 809
 810
 811 docstring InsetMathGrid::eocString(col_type col, col_type lastcol) const
 812 {
 813         if (col + 1 == lastcol)
 814                 return docstring();
 815         return from_ascii(" & ");
 816 }
 817
 818
 819 void InsetMathGrid::addRow(row_type row)
 820 {
 821         rowinfo_.insert(rowinfo_.begin() + row + 1, RowInfo());
 822         cells_.insert
 823                 (cells_.begin() + (row + 1) * ncols(), ncols(), MathData());
 824         cellinfo_.insert
 825                 (cellinfo_.begin() + (row + 1) * ncols(), ncols(), CellInfo());
 826 }
 827
 828
 829 void InsetMathGrid::delRow(row_type row)
 830 {
 831         if (nrows() == 1)
 832                 return;
 833
 834         cells_type::iterator it = cells_.begin() + row * ncols();
 835         cells_.erase(it, it + ncols());
 836
 837         vector<CellInfo>::iterator jt = cellinfo_.begin() + row * ncols();
 838         cellinfo_.erase(jt, jt + ncols());
 839
 840         rowinfo_.erase(rowinfo_.begin() + row);
 841 }
 842
 843
 844 void InsetMathGrid::copyRow(row_type row)
 845 {
 846         addRow(row);
 847         for (col_type col = 0; col < ncols(); ++col)
 848                 cells_[(row + 1) * ncols() + col] = cells_[row * ncols() + col];
 849 }
 850
 851
 852 void InsetMathGrid::swapRow(row_type row)
 853 {
 854         if (nrows() == 1)
 855                 return;
 856         if (row + 1 == nrows())
 857                 --row;
 858         for (col_type col = 0; col < ncols(); ++col)
 859                 swap(cells_[row * ncols() + col], cells_[(row + 1) * ncols() + col]);
 860 }
 861
 862
 863 void InsetMathGrid::addCol(col_type newcol)
 864 {
 865         const col_type nc = ncols();
 866         const row_type nr = nrows();
 867         cells_type new_cells((nc + 1) * nr);
 868         vector<CellInfo> new_cellinfo((nc + 1) * nr);
 869
 870         for (row_type row = 0; row < nr; ++row)
 871                 for (col_type col = 0; col < nc; ++col) {
 872                         new_cells[row * (nc + 1) + col + (col >= newcol)]
 873                                 = cells_[row * nc + col];
 874                         new_cellinfo[row * (nc + 1) + col + (col >= newcol)]
 875                                 = cellinfo_[row * nc + col];
 876                 }
 877         swap(cells_, new_cells);
 878         swap(cellinfo_, new_cellinfo);
 879
 880         ColInfo inf;
 881         inf.skip_  = defaultColSpace(newcol);
 882         inf.align_ = defaultColAlign(newcol);
 883         colinfo_.insert(colinfo_.begin() + newcol, inf);
 884 }
 885
 886
 887 void InsetMathGrid::delCol(col_type col)
 888 {
 889         if (ncols() == 1)
 890                 return;
 891
 892         cells_type tmpcells;
 893         vector<CellInfo> tmpcellinfo;
 894         for (col_type i = 0; i < nargs(); ++i)
 895                 if (i % ncols() != col) {
 896                         tmpcells.push_back(cells_[i]);
 897                         tmpcellinfo.push_back(cellinfo_[i]);
 898                 }
 899         swap(cells_, tmpcells);
 900         swap(cellinfo_, tmpcellinfo);
 901
 902         colinfo_.erase(colinfo_.begin() + col);
 903 }
 904
 905
 906 void InsetMathGrid::copyCol(col_type col)
 907 {
 908         addCol(col+1);
 909         for (row_type row = 0; row < nrows(); ++row)
 910                 cells_[row * ncols() + col + 1] = cells_[row * ncols() + col];
 911 }
 912
 913
 914 void InsetMathGrid::swapCol(col_type col)
 915 {
 916         if (ncols() == 1)
 917                 return;
 918         if (col + 1 == ncols())
 919                 --col;
 920         for (row_type row = 0; row < nrows(); ++row)
 921                 swap(cells_[row * ncols() + col], cells_[row * ncols() + col + 1]);
 922 }
 923
 924
 925 int InsetMathGrid::cellXOffset(BufferView const & bv, idx_type idx) const
 926 {
 927         if (cellinfo_[idx].multi_ == CELL_PART_OF_MULTICOLUMN)
 928                 return 0;
 929         col_type c = col(idx);
 930         int x = colinfo_[c].offset_;
 931         char align = displayColAlign(idx);
 932         Dimension const & celldim = cell(idx).dimension(bv);
 933         if (align == 'r' || align == 'R')
 934                 x += cellWidth(idx) - celldim.wid;
 935         if (align == 'c' || align == 'C')
 936                 x += (cellWidth(idx) - celldim.wid) / 2;
 937         return x;
 938 }
 939
 940
 941 int InsetMathGrid::cellYOffset(idx_type idx) const
 942 {
 943         return rowinfo_[row(idx)].offset_;
 944 }
 945
 946
 947 int InsetMathGrid::cellWidth(idx_type idx) const
 948 {
 949         switch (cellinfo_[idx].multi_) {
 950         case CELL_NORMAL:
 951                 return colinfo_[col(idx)].width_;
 952         case CELL_BEGIN_OF_MULTICOLUMN: {
 953                 col_type c1 = col(idx);
 954                 col_type c2 = c1 + ncellcols(idx);
 955                 return colinfo_[c2].offset_
 956                         - colinfo_[c1].offset_
 957                         - displayColSpace(c2)
 958                         - colsep()
 959                         - colinfo_[c2].lines_ * vlinesep();
 960         }
 961         case CELL_PART_OF_MULTICOLUMN:
 962                 return 0;
 963         }
 964         return 0;
 965 }
 966
 967
 968 bool InsetMathGrid::idxUpDown(Cursor & cur, bool up) const
 969 {
 970         if (up) {
 971                 if (cur.row() == 0)
 972                         return false;
 973                 cur.idx() -= ncols();
 974         } else {
 975                 if (cur.row() + 1 >= nrows())
 976                         return false;
 977                 cur.idx() += ncols();
 978         }
 979         // If we are in a multicolumn cell, move to the "real" cell
 980         while (cellinfo_[cur.idx()].multi_ == CELL_PART_OF_MULTICOLUMN) {
 981                 LASSERT(cur.idx() > 0, return false);
 982                 --cur.idx();
 983         }
 984         cur.pos() = cur.cell().x2pos(&cur.bv(), cur.x_target() - cur.cell().xo(cur.bv()));
 985         return true;
 986 }
 987
 988
 989 bool InsetMathGrid::idxBackward(Cursor & cur) const
 990 {
 991         // leave matrix if at the front edge
 992         if (cur.col() == 0)
 993                 return false;
 994         --cur.idx();
 995         // If we are in a multicolumn cell, move to the "real" cell
 996         while (cellinfo_[cur.idx()].multi_ == CELL_PART_OF_MULTICOLUMN) {
 997                 LASSERT(cur.idx() > 0, return false);
 998                 --cur.idx();
 999         }
1000         cur.pos() = cur.lastpos();
1001         return true;
1002 }
1003
1004
1005 bool InsetMathGrid::idxForward(Cursor & cur) const
1006 {
1007         // leave matrix if at the back edge
1008         if (cur.col() + 1 == ncols())
1009                 return false;
1010         ++cur.idx();
1011         // If we are in a multicolumn cell, move to the next cell
1012         while (cellinfo_[cur.idx()].multi_ == CELL_PART_OF_MULTICOLUMN) {
1013                 // leave matrix if at the back edge
1014                 if (cur.col() + 1 == ncols())
1015                         return false;
1016                 ++cur.idx();
1017         }
1018         cur.pos() = 0;
1019         return true;
1020 }
1021
1022
1023 bool InsetMathGrid::idxFirst(Cursor & cur) const
1024 {
1025         switch (v_align_) {
1026                 case 't':
1027                         cur.idx() = 0;
1028                         break;
1029                 case 'b':
1030                         cur.idx() = (nrows() - 1) * ncols();
1031                         break;
1032                 default:
1033                         cur.idx() = ((nrows() - 1) / 2) * ncols();
1034         }
1035         // If we are in a multicolumn cell, move to the "real" cell
1036         while (cellinfo_[cur.idx()].multi_ == CELL_PART_OF_MULTICOLUMN) {
1037                 LASSERT(cur.idx() > 0, return false);
1038                 --cur.idx();
1039         }
1040         cur.pos() = 0;
1041         return true;
1042 }
1043
1044
1045 bool InsetMathGrid::idxLast(Cursor & cur) const
1046 {
1047         switch (v_align_) {
1048                 case 't':
1049                         cur.idx() = ncols() - 1;
1050                         break;
1051                 case 'b':
1052                         cur.idx() = nargs() - 1;
1053                         break;
1054                 default:
1055                         cur.idx() = ((nrows() - 1) / 2 + 1) * ncols() - 1;
1056         }
1057         // If we are in a multicolumn cell, move to the "real" cell
1058         while (cellinfo_[cur.idx()].multi_ == CELL_PART_OF_MULTICOLUMN) {
1059                 LASSERT(cur.idx() > 0, return false);
1060                 --cur.idx();
1061         }
1062         cur.pos() = cur.lastpos();
1063         return true;
1064 }
1065
1066
1067 bool InsetMathGrid::idxDelete(idx_type & idx)
1068 {
1069         // nothing to do if we have just one row
1070         if (nrows() == 1)
1071                 return false;
1072
1073         // nothing to do if we are in the middle of the last row of the inset
1074         if (idx + ncols() > nargs())
1075                 return false;
1076
1077         // try to delete entire sequence of ncols() empty cells if possible
1078         for (idx_type i = idx; i < idx + ncols(); ++i)
1079                 if (!cell(i).empty())
1080                         return false;
1081
1082         // move cells if necessary
1083         for (idx_type i = index(row(idx), 0); i < idx; ++i)
1084                 swap(cell(i), cell(i + ncols()));
1085
1086         delRow(row(idx));
1087
1088         if (idx >= nargs())
1089                 idx = nargs() - 1;
1090
1091         // undo effect of Ctrl-Tab (i.e. pull next cell)
1092         //if (idx + 1 != nargs())
1093         //      cell(idx).swap(cell(idx + 1));
1094
1095         // we handled the event..
1096         return true;
1097 }
1098
1099
1100 // reimplement old behaviour when pressing Delete in the last position
1101 // of a cell
1102 void InsetMathGrid::idxGlue(idx_type idx)
1103 {
1104         col_type c = col(idx);
1105         if (c + 1 == ncols()) {
1106                 if (row(idx) + 1 != nrows()) {
1107                         for (col_type cc = 0; cc < ncols(); ++cc)
1108                                 cell(idx).append(cell(idx + cc + 1));
1109                         delRow(row(idx) + 1);
1110                 }
1111         } else {
1112                 idx_type idx_next = idx + 1;
1113                 while (idx_next < nargs() &&
1114                        cellinfo_[idx_next].multi_ == CELL_PART_OF_MULTICOLUMN)
1115                         ++idx_next;
1116                 if (idx_next < nargs())
1117                         cell(idx).append(cell(idx_next));
1118                 col_type oldcol = c + 1;
1119                 for (col_type cc = c + 2; cc < ncols(); ++cc)
1120                         cell(idx - oldcol + cc) = cell(idx - oldcol + 1 + cc);
1121                 cell(idx - c + ncols() - 1).clear();
1122         }
1123 }
1124
1125
1126 InsetMathGrid::RowInfo const & InsetMathGrid::rowinfo(row_type row) const
1127 {
1128         return rowinfo_[row];
1129 }
1130
1131
1132 InsetMathGrid::RowInfo & InsetMathGrid::rowinfo(row_type row)
1133 {
1134         return rowinfo_[row];
1135 }
1136
1137
1138 bool InsetMathGrid::idxBetween(idx_type idx, idx_type from, idx_type to) const
1139 {
1140         row_type const ri = row(idx);
1141         row_type const r1 = min(row(from), row(to));
1142         row_type const r2 = max(row(from), row(to));
1143         col_type const ci = col(idx);
1144         col_type const c1 = min(col(from), col(to));
1145         col_type const c2 = max(col(from), col(to));
1146         return r1 <= ri && ri <= r2 && c1 <= ci && ci <= c2;
1147 }
1148
1149
1150 void InsetMathGrid::normalize(NormalStream & os) const
1151 {
1152         os << "[grid ";
1153         for (row_type row = 0; row < nrows(); ++row) {
1154                 os << "[row ";
1155                 for (col_type col = 0; col < ncols(); ++col) {
1156                         idx_type const i = index(row, col);
1157                         switch (cellinfo_[i].multi_) {
1158                         case CELL_NORMAL:
1159                                 os << "[cell " << cell(i) << ']';
1160                                 break;
1161                         case CELL_BEGIN_OF_MULTICOLUMN:
1162                                 os << "[cell colspan="
1163                                    << static_cast<int>(ncellcols(i)) << ' '
1164                                    << cell(i) << ']';
1165                                 break;
1166                         case CELL_PART_OF_MULTICOLUMN:
1167                                 break;
1168                         }
1169                 }
1170                 os << ']';
1171         }
1172         os << ']';
1173 }
1174
1175
1176 void InsetMathGrid::mathmlize(MathStream & os) const
1177 {
1178         bool const havetable = nrows() > 1 || ncols() > 1;
1179         if (havetable)
1180                 os << MTag("mtable");
1181         char const * const celltag = havetable ? "mtd" : "mrow";
1182         for (row_type row = 0; row < nrows(); ++row) {
1183                 if (havetable)
1184                         os << MTag("mtr");
1185                 for (col_type col = 0; col < ncols(); ++col) {
1186                         idx_type const i = index(row, col);
1187                         if (cellinfo_[i].multi_ != CELL_PART_OF_MULTICOLUMN) {
1188                                 col_type const cellcols = ncellcols(i);
1189                                 ostringstream attr;
1190                                 if (havetable && cellcols > 1)
1191                                         attr << "colspan='" << cellcols << '\'';
1192                                 os << MTag(celltag, attr.str());
1193                                 os << cell(index(row, col));
1194                                 os << ETag(celltag);
1195                         }
1196                 }
1197                 if (havetable)
1198                         os << ETag("mtr");
1199         }
1200         if (havetable)
1201                 os << ETag("mtable");
1202 }
1203
1204
1205 // FIXME XHTML
1206 // We need to do something about alignment here.
1207 void InsetMathGrid::htmlize(HtmlStream & os, string attrib) const
1208 {
1209         bool const havetable = nrows() > 1 || ncols() > 1;
1210         if (!havetable) {
1211                 os << cell(index(0, 0));
1212                 return;
1213         }
1214         os << MTag("table", attrib);
1215         for (row_type row = 0; row < nrows(); ++row) {
1216                 os << MTag("tr");
1217                 for (col_type col = 0; col < ncols(); ++col) {
1218                         idx_type const i = index(row, col);
1219                         if (cellinfo_[i].multi_ != CELL_PART_OF_MULTICOLUMN) {
1220                                 col_type const cellcols = ncellcols(i);
1221                                 ostringstream attr;
1222                                 if (cellcols > 1)
1223                                         attr << "colspan='" << cellcols << '\'';
1224                                 os << MTag("td", attr.str());
1225                                 os << cell(index(row, col));
1226                                 os << ETag("td");
1227                         }
1228                 }
1229                 os << ETag("tr");
1230         }
1231         os << ETag("table");
1232 }
1233
1234
1235 void InsetMathGrid::htmlize(HtmlStream & os) const
1236 {
1237         htmlize(os, "class='mathtable'");
1238 }
1239
1240
1241 void InsetMathGrid::validate(LaTeXFeatures & features) const
1242 {
1243         if (features.runparams().math_flavor == OutputParams::MathAsHTML
1244             && (nrows() > 1 || ncols() > 1)) {
1245                 // CSS taken from InsetMathCases
1246                 features.addCSSSnippet(
1247                         "table.mathtable{display: inline-block; text-align: center; border: none;"
1248                         "border-left: thin solid black; vertical-align: middle; padding-left: 0.5ex;}\n"
1249                         "table.mathtable td {text-align: left; border: none;}");
1250         }
1251 }
1252
1253
1254 void InsetMathGrid::write(WriteStream & os) const
1255 {
1256         write(os, 0, 0, nrows(), ncols());
1257 }
1258
1259 void InsetMathGrid::write(WriteStream & os,
1260                           row_type beg_row, col_type beg_col,
1261                           row_type end_row, col_type end_col) const
1262 {
1263         MathEnsurer ensurer(os, false);
1264         docstring eol;
1265         for (row_type row = beg_row; row < end_row; ++row) {
1266                 os << verboseHLine(rowinfo_[row].lines_);
1267                 // don't write & and empty cells at end of line,
1268                 // unless there are vertical lines
1269                 col_type lastcol = 0;
1270                 bool emptyline = true;
1271                 bool last_eoln = true;
1272                 for (col_type col = beg_col; col < end_col; ++col) {
1273                         idx_type const idx = index(row, col);
1274                         bool const empty_cell = cell(idx).empty();
1275                         if (!empty_cell || cellinfo_[idx].multi_ != CELL_NORMAL)
1276                                 last_eoln = false;
1277                         if (!empty_cell || cellinfo_[idx].multi_ != CELL_NORMAL ||
1278                             colinfo_[col + 1].lines_) {
1279                                 lastcol = col + 1;
1280                                 emptyline = false;
1281                         }
1282                 }
1283                 for (col_type col = beg_col; col < end_col;) {
1284                         int nccols = 1;
1285                         idx_type const idx = index(row, col);
1286                         TexRow::RowEntry entry = os.texrow().mathEntry(id(),idx);
1287                         os.texrow().startMath(id(),idx);
1288                         if (col >= lastcol) {
1289                                 ++col;
1290                                 continue;
1291                         }
1292                         os.pushRowEntry(entry);
1293                         if (cellinfo_[idx].multi_ == CELL_BEGIN_OF_MULTICOLUMN) {
1294                                 size_t s = col + 1;
1295                                 while (s < ncols() &&
1296                                        cellinfo_[index(row, s)].multi_ == CELL_PART_OF_MULTICOLUMN)
1297                                         s++;
1298                                 nccols = s - col;
1299                                 os << "\\multicolumn{" << nccols
1300                                    << "}{" << cellinfo_[idx].align_
1301                                    << "}{";
1302                         }
1303                         os << cell(idx);
1304                         if (os.pendingBrace())
1305                                 ModeSpecifier specifier(os, TEXT_MODE);
1306                         if (cellinfo_[idx].multi_ == CELL_BEGIN_OF_MULTICOLUMN)
1307                                 os << '}';
1308                         os << eocString(col + nccols - 1, lastcol);
1309                         col += nccols;
1310                         os.popRowEntry();
1311                 }
1312                 eol = eolString(row, os.fragile(), os.latex(), last_eoln);
1313                 os << eol;
1314                 // append newline only if line wasn't completely empty
1315                 // and the formula is not written on a single line
1316                 bool const empty = emptyline && eol.empty();
1317                 if (!empty && nrows() > 1)
1318                         os << "\n";
1319         }
1320         // @TODO use end_row instead of nrows() ?
1321         docstring const s = verboseHLine(rowinfo_[nrows()].lines_);
1322         if (!s.empty()) {
1323                 if (eol.empty()) {
1324                         if (os.fragile())
1325                                 os << "\\protect";
1326                         os << "\\\\";
1327                 }
1328                 os << s;
1329         }
1330 }
1331
1332
1333 int InsetMathGrid::colsep() const
1334 {
1335         return 6;
1336 }
1337
1338
1339 int InsetMathGrid::rowsep() const
1340 {
1341         return 6;
1342 }
1343
1344
1345 int InsetMathGrid::hlinesep() const
1346 {
1347         return 3;
1348 }
1349
1350
1351 int InsetMathGrid::vlinesep() const
1352 {
1353         return 3;
1354 }
1355
1356
1357 int InsetMathGrid::border() const
1358 {
1359         return 1;
1360 }
1361
1362
1363 void InsetMathGrid::splitCell(Cursor & cur)
1364 {
1365         if (cur.idx() == cur.lastidx())
1366                 return;
1367         MathData ar = cur.cell();
1368         ar.erase(0, cur.pos());
1369         cur.cell().erase(cur.pos(), cur.lastpos());
1370         ++cur.idx();
1371         while (cur.idx() << nargs() &&
1372                cellinfo_[cur.idx()].multi_ == CELL_BEGIN_OF_MULTICOLUMN)
1373                 ++cur.idx();
1374         cur.pos() = 0;
1375         cur.cell().insert(0, ar);
1376 }
1377
1378
1379 char InsetMathGrid::displayColAlign(idx_type idx) const
1380 {
1381         if (cellinfo_[idx].multi_ == CELL_BEGIN_OF_MULTICOLUMN) {
1382                 // align_ may also contain lines like "||r|", so this is
1383                 // not complete, but we catch at least the simple cases.
1384                 if (cellinfo_[idx].align_ == "c")
1385                         return 'c';
1386                 if (cellinfo_[idx].align_ == "l")
1387                         return 'l';
1388                 if (cellinfo_[idx].align_ == "r")
1389                         return 'r';
1390         }
1391         return colinfo_[col(idx)].align_;
1392 }
1393
1394
1395 int InsetMathGrid::displayColSpace(col_type col) const
1396 {
1397         return colinfo_[col].skip_;
1398 }
1399
1400 void InsetMathGrid::doDispatch(Cursor & cur, FuncRequest & cmd)
1401 {
1402         //lyxerr << "*** InsetMathGrid: request: " << cmd << endl;
1403
1404         Parse::flags parseflg = Parse::QUIET | Parse::USETEXT;
1405
1406         FuncCode const act = cmd.action();
1407         switch (act) {
1408
1409         // insert file functions
1410         case LFUN_LINE_DELETE_FORWARD:
1411                 cur.recordUndoInset();
1412                 //autocorrect_ = false;
1413                 //macroModeClose();
1414                 //if (selection_) {
1415                 //      selDel();
1416                 //      break;
1417                 //}
1418                 if (nrows() > 1)
1419                         delRow(cur.row());
1420                 if (cur.idx() > cur.lastidx())
1421                         cur.idx() = cur.lastidx();
1422                 if (cur.pos() > cur.lastpos())
1423                         cur.pos() = cur.lastpos();
1424                 break;
1425
1426         case LFUN_CELL_SPLIT:
1427                 cur.recordUndo();
1428                 splitCell(cur);
1429                 break;
1430
1431         case LFUN_CELL_BACKWARD:
1432                 // See below.
1433                 cur.setSelection(false);
1434                 if (!idxPrev(cur)) {
1435                         cmd = FuncRequest(LFUN_FINISHED_BACKWARD);
1436                         cur.undispatched();
1437                 }
1438                 break;
1439
1440         case LFUN_CELL_FORWARD:
1441                 // Can't handle selection by additional 'shift' as this is
1442                 // hard bound to LFUN_CELL_BACKWARD
1443                 cur.setSelection(false);
1444                 if (!idxNext(cur)) {
1445                         cmd = FuncRequest(LFUN_FINISHED_FORWARD);
1446                         cur.undispatched();
1447                 }
1448                 break;
1449
1450         case LFUN_NEWLINE_INSERT: {
1451                 cur.recordUndoInset();
1452                 row_type const r = cur.row();
1453                 addRow(r);
1454
1455                 // split line
1456                 for (col_type c = col(cur.idx()) + 1; c < ncols(); ++c)
1457                         swap(cell(index(r, c)), cell(index(r + 1, c)));
1458
1459                 // split cell
1460                 splitCell(cur);
1461                 if (ncols() > 1)
1462                         swap(cell(cur.idx()), cell(cur.idx() + ncols() - 1));
1463                 if (cur.idx() > 0)
1464                         --cur.idx();
1465                 cur.pos() = cur.lastpos();
1466                 cur.forceBufferUpdate();
1467                 //mathcursor->normalize();
1468                 //cmd = FuncRequest(LFUN_FINISHED_BACKWARD);
1469                 break;
1470         }
1471
1472         case LFUN_TABULAR_FEATURE: {
1473                 cur.recordUndoInset();
1474                 //lyxerr << "handling tabular-feature " << to_utf8(cmd.argument()) << endl;
1475                 istringstream is(to_utf8(cmd.argument()));
1476                 string s;
1477                 is >> s;
1478                 if (s == "valign-top")
1479                         setVerticalAlignment('t');
1480                 else if (s == "valign-middle")
1481                         setVerticalAlignment('c');
1482                 else if (s == "valign-bottom")
1483                         setVerticalAlignment('b');
1484                 else if (s == "align-left")
1485                         setHorizontalAlignment('l', cur.col());
1486                 else if (s == "align-right")
1487                         setHorizontalAlignment('r', cur.col());
1488                 else if (s == "align-center")
1489                         setHorizontalAlignment('c', cur.col());
1490                 else if (s == "append-row")
1491                         for (int i = 0, n = extractInt(is); i < n; ++i)
1492                                 addRow(cur.row());
1493                 else if (s == "delete-row") {
1494                         cur.clearSelection(); // bug 4323
1495                         for (int i = 0, n = extractInt(is); i < n; ++i) {
1496                                 delRow(cur.row());
1497                                 if (cur.idx() >= nargs())
1498                                         cur.idx() -= ncols();
1499                         }
1500                         cur.pos() = 0; // trick, see below
1501                 }
1502                 else if (s == "copy-row") {
1503                         // Here (as later) we save the cursor col/row
1504                         // in order to restore it after operation.
1505                         row_type const r = cur.row();
1506                         col_type const c = cur.col();
1507                         for (int i = 0, n = extractInt(is); i < n; ++i)
1508                                 copyRow(cur.row());
1509                         cur.idx() = index(r, c);
1510                 }
1511                 else if (s == "swap-row") {
1512                         swapRow(cur.row());
1513                         // Trick to suppress same-idx-means-different-cell
1514                         // assertion crash:
1515                         cur.pos() = 0;
1516                 }
1517                 else if (s == "add-hline-above")
1518                         rowinfo_[cur.row()].lines_++;
1519                 else if (s == "add-hline-below")
1520                         rowinfo_[cur.row()+1].lines_++;
1521                 else if (s == "delete-hline-above")
1522                         rowinfo_[cur.row()].lines_--;
1523                 else if (s == "delete-hline-below")
1524                         rowinfo_[cur.row()+1].lines_--;
1525                 else if (s == "append-column") {
1526                         row_type const r = cur.row();
1527                         col_type const c = cur.col();
1528                         for (int i = 0, n = extractInt(is); i < n; ++i)
1529                                 addCol(cur.col() + 1);
1530                         cur.idx() = index(r, c);
1531                 }
1532                 else if (s == "delete-column") {
1533                         cur.clearSelection(); // bug 4323
1534                         row_type const r = cur.row();
1535                         col_type const c = cur.col();
1536                         for (int i = 0, n = extractInt(is); i < n; ++i)
1537                                 delCol(col(cur.idx()));
1538                         cur.idx() = index(r, min(c, cur.ncols() - 1));
1539                         cur.pos() = 0; // trick, see above
1540                 }
1541                 else if (s == "copy-column") {
1542                         row_type const r = cur.row();
1543                         col_type const c = cur.col();
1544                         copyCol(cur.col());
1545                         cur.idx() = index(r, c);
1546                 }
1547                 else if (s == "swap-column") {
1548                         swapCol(cur.col());
1549                         cur.pos() = 0; // trick, see above
1550                 }
1551                 else if (s == "add-vline-left") {
1552                         colinfo_[cur.col()].lines_++;
1553                         if (!colinfo_[cur.col()].special_.empty())
1554                                 colinfo_[cur.col()].special_ += '|';
1555                 }
1556                 else if (s == "add-vline-right") {
1557                         colinfo_[cur.col()+1].lines_++;
1558                         if (!colinfo_[cur.col()+1].special_.empty())
1559                                 colinfo_[cur.col()+1].special_.insert(0, 1, '|');
1560                 }
1561                 else if (s == "delete-vline-left") {
1562                         colinfo_[cur.col()].lines_--;
1563                         docstring & special = colinfo_[cur.col()].special_;
1564                         if (!special.empty()) {
1565                                 docstring::size_type i = special.rfind('|');
1566                                 LASSERT(i != docstring::npos, break);
1567                                 special.erase(i, 1);
1568                         }
1569                 }
1570                 else if (s == "delete-vline-right") {
1571                         colinfo_[cur.col()+1].lines_--;
1572                         docstring & special = colinfo_[cur.col()+1].special_;
1573                         if (!special.empty()) {
1574                                 docstring::size_type i = special.find('|');
1575                                 LASSERT(i != docstring::npos, break);
1576                                 special.erase(i, 1);
1577                         }
1578                 }
1579                 else {
1580                         cur.undispatched();
1581                         break;
1582                 }
1583                 // perhaps this should be FINISHED_BACKWARD -- just for clarity?
1584                 //lyxerr << "returning FINISHED_LEFT" << endl;
1585                 break;
1586         }
1587
1588         case LFUN_CLIPBOARD_PASTE:
1589                 parseflg |= Parse::VERBATIM;
1590                 // fall through
1591         case LFUN_PASTE: {
1592                 if (cur.currentMode() <= TEXT_MODE)
1593                         parseflg |= Parse::TEXTMODE;
1594                 cur.message(_("Paste"));
1595                 cap::replaceSelection(cur);
1596                 docstring topaste;
1597                 if (cmd.argument().empty() && !theClipboard().isInternal())
1598                         topaste = theClipboard().getAsText(Clipboard::PlainTextType);
1599                 else {
1600                         idocstringstream is(cmd.argument());
1601                         int n = 0;
1602                         is >> n;
1603                         topaste = cap::selection(n, buffer().params().documentClassPtr());
1604                 }
1605                 InsetMathGrid grid(buffer_, 1, 1);
1606                 if (!topaste.empty())
1607                         if ((topaste.size() == 1 && isAscii(topaste))
1608                             || !mathed_parse_normal(grid, topaste, parseflg)) {
1609                                 resetGrid(grid);
1610                                 mathed_parse_normal(grid, topaste, parseflg | Parse::VERBATIM);
1611                         }
1612
1613                 bool hline_enabled = false;
1614                 FuncRequest fr = FuncRequest(LFUN_TABULAR_FEATURE, "add-hline-above");
1615                 FuncStatus status;
1616                 if (getStatus(cur, fr, status))
1617                         hline_enabled = status.enabled();
1618                 if (grid.nargs() == 1) {
1619                         // single cell/part of cell
1620                         cur.recordUndoInset();
1621                         cur.cell().insert(cur.pos(), grid.cell(0));
1622                         cur.pos() += grid.cell(0).size();
1623                         if (hline_enabled)
1624                                 rowinfo_[cur.row()].lines_ += grid.rowinfo_[0].lines_;
1625                         else {
1626                                 for (unsigned int l = 0; l < grid.rowinfo_[0].lines_; ++l) {
1627                                          cur.cell().insert(0,
1628                                                 MathAtom(new InsetMathUnknown(from_ascii("\\hline"))));
1629                                          cur.pos()++;
1630                                 }
1631                         }
1632                 } else {
1633                         // multiple cells
1634                         cur.recordUndoInset();
1635                         col_type const numcols =
1636                                 min(grid.ncols(), ncols() - col(cur.idx()));
1637                         row_type const numrows =
1638                                 min(grid.nrows(), nrows() - cur.row());
1639                         for (row_type r = 0; r < numrows; ++r) {
1640                                 for (col_type c = 0; c < numcols; ++c) {
1641                                         idx_type i = index(r + cur.row(), c + col(cur.idx()));
1642                                         cell(i).insert(0, grid.cell(grid.index(r, c)));
1643                                 }
1644                                 if (hline_enabled)
1645                                         rowinfo_[r].lines_ += grid.rowinfo_[r].lines_;
1646                                 else {
1647                                         for (unsigned int l = 0; l < grid.rowinfo_[r].lines_; ++l) {
1648                                                 idx_type i = index(r + cur.row(), 0);
1649                                                 cell(i).insert(0,
1650                                                         MathAtom(new InsetMathUnknown(from_ascii("\\hline"))));
1651                                         }
1652                                 }
1653                                 // append the left over horizontal cells to the last column
1654                                 idx_type i = index(r + cur.row(), ncols() - 1);
1655                                 for (InsetMath::col_type c = numcols; c < grid.ncols(); ++c)
1656                                         cell(i).append(grid.cell(grid.index(r, c)));
1657                         }
1658                         // append the left over vertical cells to the last _cell_
1659                         idx_type i = nargs() - 1;
1660                         for (row_type r = numrows; r < grid.nrows(); ++r) {
1661                                 for (col_type c = 0; c < grid.ncols(); ++c)
1662                                         cell(i).append(grid.cell(grid.index(r, c)));
1663                                 if (hline_enabled)
1664                                         rowinfo_[r].lines_ += grid.rowinfo_[r].lines_;
1665                                 else {
1666                                         for (unsigned int l = 0; l < grid.rowinfo_[r].lines_; ++l) {
1667                                                 cell(i).insert(0,
1668                                                         MathAtom(new InsetMathUnknown(from_ascii("\\hline"))));
1669                                         }
1670                                 }
1671                         }
1672                 }
1673                 cur.clearSelection(); // bug 393
1674                 // FIXME audit setBuffer calls
1675                 cur.inset().setBuffer(*buffer_);
1676                 cur.forceBufferUpdate();
1677                 cur.finishUndo();
1678                 break;
1679         }
1680
1681         case LFUN_LINE_BEGIN:
1682         case LFUN_WORD_BACKWARD:
1683         case LFUN_WORD_LEFT:
1684                 cur.screenUpdateFlags(Update::Decoration | Update::FitCursor);
1685                 // fall through
1686         case LFUN_LINE_BEGIN_SELECT:
1687         case LFUN_WORD_BACKWARD_SELECT:
1688         case LFUN_WORD_LEFT_SELECT:
1689                 cur.selHandle(act == LFUN_WORD_BACKWARD_SELECT ||
1690                                 act == LFUN_WORD_LEFT_SELECT ||
1691                                 act == LFUN_LINE_BEGIN_SELECT);
1692                 cur.macroModeClose();
1693                 if (cur.pos() != 0) {
1694                         cur.pos() = 0;
1695                 } else if (cur.idx() % cur.ncols() != 0) {
1696                         cur.idx() -= cur.idx() % cur.ncols();
1697                         cur.pos() = 0;
1698                 } else if (cur.idx() != 0) {
1699                         cur.idx() = 0;
1700                         cur.pos() = 0;
1701                 } else {
1702                         cmd = FuncRequest(LFUN_FINISHED_BACKWARD);
1703                         cur.undispatched();
1704                 }
1705                 break;
1706
1707         case LFUN_WORD_FORWARD:
1708         case LFUN_WORD_RIGHT:
1709         case LFUN_LINE_END:
1710                 cur.screenUpdateFlags(Update::Decoration | Update::FitCursor);
1711                 // fall through
1712         case LFUN_WORD_FORWARD_SELECT:
1713         case LFUN_WORD_RIGHT_SELECT:
1714         case LFUN_LINE_END_SELECT:
1715                 cur.selHandle(act == LFUN_WORD_FORWARD_SELECT ||
1716                                 act == LFUN_WORD_RIGHT_SELECT ||
1717                                 act == LFUN_LINE_END_SELECT);
1718                 cur.macroModeClose();
1719                 cur.clearTargetX();
1720                 if (cur.pos() != cur.lastpos()) {
1721                         cur.pos() = cur.lastpos();
1722                 } else if ((cur.idx() + 1) % cur.ncols() != 0) {
1723                         cur.idx() += cur.ncols() - 1 - cur.idx() % cur.ncols();
1724                         cur.pos() = cur.lastpos();
1725                 } else if (cur.idx() != cur.lastidx()) {
1726                         cur.idx() = cur.lastidx();
1727                         cur.pos() = cur.lastpos();
1728                 } else {
1729                         cmd = FuncRequest(LFUN_FINISHED_FORWARD);
1730                         cur.undispatched();
1731                 }
1732                 break;
1733
1734         default:
1735                 InsetMathNest::doDispatch(cur, cmd);
1736         }
1737 }
1738
1739
1740 bool InsetMathGrid::getStatus(Cursor & cur, FuncRequest const & cmd,
1741                 FuncStatus & status) const
1742 {
1743         switch (cmd.action()) {
1744         case LFUN_TABULAR_FEATURE: {
1745                 string s = cmd.getArg(0);
1746                 if (&cur.inset() != this) {
1747                         // Table actions requires that the cursor is _inside_ the
1748                         // table.
1749                         status.setEnabled(false);
1750                         status.message(from_utf8(N_("Cursor not in table")));
1751                         return true;
1752                 }
1753                 if (nrows() <= 1 && (s == "delete-row" || s == "swap-row")) {
1754                         status.setEnabled(false);
1755                         status.message(from_utf8(N_("Only one row")));
1756                         return true;
1757                 }
1758                 if (ncols() <= 1 &&
1759                     (s == "delete-column" || s == "swap-column")) {
1760                         status.setEnabled(false);
1761                         status.message(from_utf8(N_("Only one column")));
1762                         return true;
1763                 }
1764                 if ((rowinfo_[cur.row()].lines_ == 0 &&
1765                      s == "delete-hline-above") ||
1766                     (rowinfo_[cur.row() + 1].lines_ == 0 &&
1767                      s == "delete-hline-below")) {
1768                         status.setEnabled(false);
1769                         status.message(from_utf8(N_("No hline to delete")));
1770                         return true;
1771                 }
1772
1773                 if ((colinfo_[cur.col()].lines_ == 0 &&
1774                      s == "delete-vline-left") ||
1775                     (colinfo_[cur.col() + 1].lines_ == 0 &&
1776                      s == "delete-vline-right")) {
1777                         status.setEnabled(false);
1778                         status.message(from_utf8(N_("No vline to delete")));
1779                         return true;
1780                 }
1781                 if (s == "valign-top" || s == "valign-middle" ||
1782                     s == "valign-bottom" || s == "align-left" ||
1783                     s == "align-right" || s == "align-center") {
1784                         status.setEnabled(true);
1785                         char const ha = horizontalAlignment(cur.col());
1786                         char const va = verticalAlignment();
1787                         status.setOnOff((s == "align-left" && ha == 'l')
1788                                         || (s == "align-right"   && ha == 'r')
1789                                         || (s == "align-center"  && ha == 'c')
1790                                         || (s == "valign-top"    && va == 't')
1791                                         || (s == "valign-bottom" && va == 'b')
1792                                         || (s == "valign-middle" && va == 'c'));
1793                         return true;
1794                 }
1795                 if (s == "append-row" || s == "delete-row" ||
1796                     s == "copy-row" || s == "swap-row" ||
1797                     s == "add-hline-above" || s == "add-hline-below" ||
1798                     s == "delete-hline-above" || s == "delete-hline-below" ||
1799                     s == "append-column" || s == "delete-column" ||
1800                     s == "copy-column" || s == "swap-column" ||
1801                     s == "add-vline-left" || s == "add-vline-right" ||
1802                     s == "delete-vline-left" || s == "delete-vline-right") {
1803                         status.setEnabled(true);
1804                 } else {
1805                         status.setEnabled(false);
1806                         status.message(bformat(
1807                             from_utf8(N_("Unknown tabular feature '%1$s'")),
1808                             from_utf8(s)));
1809                 }
1810
1811 #if 0
1812                 // FIXME: What did this code do?
1813                 // Please check whether it is still needed!
1814                 // should be more precise
1815                 if (v_align_ == '\0') {
1816                         status.enable(true);
1817                         break;
1818                 }
1819                 if (cmd.argument().empty()) {
1820                         status.enable(false);
1821                         break;
1822                 }
1823                 if (!contains("tcb", cmd.argument()[0])) {
1824                         status.enable(false);
1825                         break;
1826                 }
1827                 status.setOnOff(cmd.argument()[0] == v_align_);
1828                 status.setEnabled(true);
1829 #endif
1830                 return true;
1831         }
1832
1833         case LFUN_CELL_SPLIT:
1834                 status.setEnabled(cur.idx() != cur.lastidx());
1835                 return true;
1836
1837         case LFUN_CELL_BACKWARD:
1838         case LFUN_CELL_FORWARD:
1839                 status.setEnabled(true);
1840                 return true;
1841
1842         default:
1843                 break;
1844         }
1845         return InsetMathNest::getStatus(cur, cmd, status);
1846 }
1847
1848
1849 // static
1850 char InsetMathGrid::colAlign(HullType type, col_type col)
1851 {
1852         switch (type) {
1853         case hullEqnArray:
1854                 return "rcl"[col % 3];
1855
1856         case hullMultline:
1857         case hullGather:
1858                 return 'c';
1859
1860         case hullAlign:
1861         case hullAlignAt:
1862         case hullXAlignAt:
1863         case hullXXAlignAt:
1864         case hullFlAlign:
1865                 return "rl"[col & 1];
1866
1867         case hullUnknown:
1868         case hullNone:
1869         case hullSimple:
1870         case hullEquation:
1871         case hullRegexp:
1872                 return 'c';
1873         }
1874         // avoid warning
1875         return 'c';
1876 }
1877
1878
1879 //static
1880 int InsetMathGrid::colSpace(HullType type, col_type col)
1881 {
1882         int alignInterSpace = 0;
1883         switch (type) {
1884         case hullUnknown:
1885         case hullNone:
1886         case hullSimple:
1887         case hullEquation:
1888         case hullMultline:
1889         case hullGather:
1890         case hullRegexp:
1891                 return 0;
1892
1893         case hullEqnArray:
1894                 return 5;
1895
1896         case hullAlign:
1897                 alignInterSpace = 20;
1898                 break;
1899         case hullAlignAt:
1900                 alignInterSpace = 0;
1901                 break;
1902         case hullXAlignAt:
1903                 alignInterSpace = 40;
1904                 break;
1905         case hullXXAlignAt:
1906         case hullFlAlign:
1907                 alignInterSpace = 60;
1908                 break;
1909         }
1910         return (col % 2) ? alignInterSpace : 0;
1911 }
1912
1913
1914 } // namespace lyx