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 "CoordCache.h"
  26 #include "Cursor.h"
  27 #include "CutAndPaste.h"
  28 #include "FuncRequest.h"
  29 #include "FuncStatus.h"
  30 #include "LaTeXFeatures.h"
  31 #include "TexRow.h"
  32
  33 #include "frontends/Clipboard.h"
  34 #include "frontends/Painter.h"
  35
  36 #include "support/debug.h"
  37 #include "support/docstream.h"
  38 #include "support/gettext.h"
  39 #include "support/lstrings.h"
  40 #include "support/lassert.h"
  41
  42 #include <sstream>
  43
  44 using namespace std;
  45 using namespace lyx::support;
  46
  47
  48
  49 namespace lyx {
  50
  51 static docstring verboseHLine(int n)
  52 {
  53         docstring res;
  54         for (int i = 0; i < n; ++i)
  55                 res += "\\hline";
  56         if (n)
  57                 res += ' ';
  58         return res;
  59 }
  60
  61
  62 static int extractInt(istream & is)
  63 {
  64         int num = 1;
  65         is >> num;
  66         return (num == 0) ? 1 : num;
  67 }
  68
  69
  70 static void resetGrid(InsetMathGrid & grid)
  71 {
  72         while (grid.ncols() > 1)
  73                 grid.delCol(grid.ncols() - 1);
  74         while (grid.nrows() > 1)
  75                 grid.delRow(grid.nrows() - 1);
  76         grid.cell(0).erase(0, grid.cell(0).size());
  77         grid.setDefaults();
  78 }
  79
  80
  81
  82 //////////////////////////////////////////////////////////////
  83
  84
  85 InsetMathGrid::CellInfo::CellInfo()
  86         : multi_(CELL_NORMAL)
  87 {}
  88
  89
  90
  91 //////////////////////////////////////////////////////////////
  92
  93
  94 InsetMathGrid::RowInfo::RowInfo()
  95         : descent_(0), ascent_(0), offset_(0), lines_(0), skip_(0),
  96           allow_newpage_(true)
  97 {}
  98
  99
 100
 101 int InsetMathGrid::RowInfo::skipPixels(MetricsInfo const & mi) const
 102 {
 103         return mi.base.inPixels(crskip_);
 104 }
 105
 106
 107
 108 //////////////////////////////////////////////////////////////
 109
 110
 111 InsetMathGrid::ColInfo::ColInfo()
 112         : align_('c'), width_(0), offset_(0), lines_(0), skip_(0)
 113 {}
 114
 115
 116 //////////////////////////////////////////////////////////////
 117
 118
 119 InsetMathGrid::InsetMathGrid(Buffer * buf)
 120         : InsetMathNest(buf, 1),
 121           rowinfo_(1 + 1),
 122                 colinfo_(1 + 1),
 123                 cellinfo_(1),
 124                 v_align_('c')
 125 {
 126         setDefaults();
 127 }
 128
 129
 130 InsetMathGrid::InsetMathGrid(Buffer * buf, col_type m, row_type n)
 131         : InsetMathNest(buf, m * n),
 132           rowinfo_(n + 1),
 133                 colinfo_(m + 1),
 134                 cellinfo_(m * n),
 135                 v_align_('c')
 136 {
 137         setDefaults();
 138 }
 139
 140
 141 InsetMathGrid::InsetMathGrid(Buffer * buf, col_type m, row_type n, char v,
 142         docstring const & h)
 143         : InsetMathNest(buf, m * n),
 144           rowinfo_(n + 1),
 145           colinfo_(m + 1),
 146                 cellinfo_(m * n),
 147                 v_align_(v)
 148 {
 149         setDefaults();
 150         setVerticalAlignment(v);
 151         setHorizontalAlignments(h);
 152 }
 153
 154
 155 Inset * InsetMathGrid::clone() const
 156 {
 157         return new InsetMathGrid(*this);
 158 }
 159
 160
 161 InsetMath::idx_type InsetMathGrid::index(row_type row, col_type col) const
 162 {
 163         return col + ncols() * row;
 164 }
 165
 166
 167 void InsetMathGrid::setDefaults()
 168 {
 169         if (ncols() <= 0)
 170                 lyxerr << "positive number of columns expected" << endl;
 171         //if (nrows() <= 0)
 172         //      lyxerr << "positive number of rows expected" << endl;
 173         for (col_type col = 0; col < ncols(); ++col) {
 174                 colinfo_[col].align_ = defaultColAlign(col);
 175                 colinfo_[col].skip_  = defaultColSpace(col);
 176                 colinfo_[col].special_.clear();
 177         }
 178         for (idx_type idx = 0; idx < nargs(); ++idx)
 179                 cellinfo_[idx].multi_ = CELL_NORMAL;
 180 }
 181
 182
 183 bool InsetMathGrid::interpretString(Cursor & cur, docstring const & str)
 184 {
 185         if (str == "\\hline") {
 186                 FuncRequest fr = FuncRequest(LFUN_TABULAR_FEATURE, "add-hline-above");
 187                 FuncStatus status;
 188                 if (getStatus(cur, fr, status)) {
 189                         if (status.enabled()) {
 190                                 rowinfo_[cur.row()].lines_++;
 191                                 return true;
 192                         }
 193                 }
 194         }
 195         return InsetMathNest::interpretString(cur, str);
 196 }
 197
 198
 199 void InsetMathGrid::setHorizontalAlignments(docstring const & hh)
 200 {
 201         col_type col = 0;
 202         for (docstring::const_iterator it = hh.begin(); it != hh.end(); ++it) {
 203                 char_type c = *it;
 204                 if (c == '|') {
 205                         colinfo_[col].lines_++;
 206                 } else if ((c == 'p' || c == 'm' || c == 'b'||
 207                             c == '!' || c == '@' || c == '>' || c == '<') &&
 208                            it + 1 != hh.end() && *(it + 1) == '{') {
 209                         // @{decl.} and p{width} are standard LaTeX, the
 210                         // others are extensions by array.sty
 211                         bool const newcolumn = c == 'p' || c == 'm' || c == 'b';
 212                         if (newcolumn) {
 213                                 // this declares a new column
 214                                 if (col >= ncols())
 215                                         // Only intercolumn stuff is allowed
 216                                         // in the last dummy column
 217                                         break;
 218                                 colinfo_[col].align_ = 'l';
 219                         } else {
 220                                 // this is intercolumn stuff
 221                                 if (colinfo_[col].special_.empty())
 222                                         // Overtake possible lines
 223                                         colinfo_[col].special_ = docstring(colinfo_[col].lines_, '|');
 224                         }
 225                         int brace_open = 0;
 226                         int brace_close = 0;
 227                         while (it != hh.end()) {
 228                                 c = *it;
 229                                 colinfo_[col].special_ += c;
 230                                 if (c == '{')
 231                                         ++brace_open;
 232                                 else if (c == '}')
 233                                         ++brace_close;
 234                                 ++it;
 235                                 if (brace_open > 0 && brace_open == brace_close)
 236                                         break;
 237                         }
 238                         --it;
 239                         if (newcolumn) {
 240                                 colinfo_[col].lines_ = count(
 241                                         colinfo_[col].special_.begin(),
 242                                         colinfo_[col].special_.end(), '|');
 243                                 LYXERR(Debug::MATHED, "special column separator: `"
 244                                         << to_utf8(colinfo_[col].special_) << '\'');
 245                                 ++col;
 246                                 colinfo_[col].lines_ = 0;
 247                                 colinfo_[col].special_.clear();
 248                         }
 249                 } else if (col >= ncols()) {
 250                         // Only intercolumn stuff is allowed in the last
 251                         // dummy column
 252                         break;
 253                 } else if (c == 'c' || c == 'l' || c == 'r') {
 254                         colinfo_[col].align_ = static_cast<char>(c);
 255                         if (!colinfo_[col].special_.empty()) {
 256                                 colinfo_[col].special_ += c;
 257                                 colinfo_[col].lines_ = count(
 258                                                 colinfo_[col].special_.begin(),
 259                                                 colinfo_[col].special_.end(), '|');
 260                                 LYXERR(Debug::MATHED, "special column separator: `"
 261                                         << to_utf8(colinfo_[col].special_) << '\'');
 262                         }
 263                         ++col;
 264                         colinfo_[col].lines_ = 0;
 265                         colinfo_[col].special_.clear();
 266                 } else {
 267                         lyxerr << "unknown column separator: '" << c << "'" << endl;
 268                 }
 269         }
 270
 271 /*
 272         col_type n = hh.size();
 273         if (n > ncols())
 274                 n = ncols();
 275         for (col_type col = 0; col < n; ++col)
 276                 colinfo_[col].align_ = hh[col];
 277 */
 278 }
 279
 280
 281 InsetMathGrid::col_type InsetMathGrid::guessColumns(docstring const & hh)
 282 {
 283         col_type col = 0;
 284         for (docstring::const_iterator it = hh.begin(); it != hh.end(); ++it)
 285                 if (*it == 'c' || *it == 'l' || *it == 'r'||
 286                     *it == 'p' || *it == 'm' || *it == 'b')
 287                         ++col;
 288         // let's have at least one column, even if we did not recognize its
 289         // alignment
 290         if (col == 0)
 291                 col = 1;
 292         return col;
 293 }
 294
 295
 296 void InsetMathGrid::setHorizontalAlignment(char h, col_type col)
 297 {
 298         colinfo_[col].align_ = h;
 299         if (!colinfo_[col].special_.empty()) {
 300                 char_type & c = colinfo_[col].special_[colinfo_[col].special_.size() - 1];
 301                 if (c == 'l' || c == 'c' || c == 'r')
 302                         c = h;
 303         }
 304         // FIXME: Change alignment of p, m and b columns, too
 305 }
 306
 307
 308 char InsetMathGrid::horizontalAlignment(col_type col) const
 309 {
 310         return colinfo_[col].align_;
 311 }
 312
 313
 314 docstring InsetMathGrid::horizontalAlignments() const
 315 {
 316         docstring res;
 317         for (col_type col = 0; col < ncols(); ++col) {
 318                 if (colinfo_[col].special_.empty()) {
 319                         res += docstring(colinfo_[col].lines_, '|');
 320                         res += colinfo_[col].align_;
 321                 } else
 322                         res += colinfo_[col].special_;
 323         }
 324         if (colinfo_[ncols()].special_.empty())
 325                 return res + docstring(colinfo_[ncols()].lines_, '|');
 326         return res + colinfo_[ncols()].special_;
 327 }
 328
 329
 330 void InsetMathGrid::setVerticalAlignment(char c)
 331 {
 332         v_align_ = c;
 333 }
 334
 335
 336 char InsetMathGrid::verticalAlignment() const
 337 {
 338         return v_align_;
 339 }
 340
 341
 342 InsetMathGrid::col_type InsetMathGrid::ncols() const
 343 {
 344         return colinfo_.size() - 1;
 345 }
 346
 347
 348 InsetMathGrid::row_type InsetMathGrid::nrows() const
 349 {
 350         return rowinfo_.size() - 1;
 351 }
 352
 353
 354 InsetMathGrid::col_type InsetMathGrid::col(idx_type idx) const
 355 {
 356         return idx % ncols();
 357 }
 358
 359
 360 InsetMathGrid::row_type InsetMathGrid::row(idx_type idx) const
 361 {
 362         return idx / ncols();
 363 }
 364
 365
 366 InsetMathGrid::col_type InsetMathGrid::ncellcols(idx_type idx) const
 367 {
 368         col_type cols = 1;
 369         if (cellinfo_[idx].multi_ == CELL_NORMAL)
 370                 return cols;
 371         // If the cell at idx is already CELL_PART_OF_MULTICOLUMN we return
 372         // the number of remaining columns, not the ones of the complete
 373         // multicolumn cell. This makes it possible to always go to the next
 374         // cell with idx + ncellcols(idx) - 1.
 375         row_type const r = row(idx);
 376         while (idx+cols < nargs() && row(idx+cols) == r &&
 377                cellinfo_[idx+cols].multi_ == CELL_PART_OF_MULTICOLUMN)
 378                 cols++;
 379         return cols;
 380 }
 381
 382
 383 void InsetMathGrid::vcrskip(Length const & crskip, row_type row)
 384 {
 385         rowinfo_[row].crskip_ = crskip;
 386 }
 387
 388
 389 Length InsetMathGrid::vcrskip(row_type row) const
 390 {
 391         return rowinfo_[row].crskip_;
 392 }
 393
 394
 395 void InsetMathGrid::metrics(MetricsInfo & mi, Dimension & dim) const
 396 {
 397         // let the cells adjust themselves
 398         for (idx_type i = 0; i < nargs(); ++i) {
 399                 if (cellinfo_[i].multi_ != CELL_PART_OF_MULTICOLUMN) {
 400                         Dimension dimc;
 401                         // the 'false' is to make sure that the cell is tall enough
 402                         cell(i).metrics(mi, dimc, false);
 403                 }
 404         }
 405
 406         BufferView & bv = *mi.base.bv;
 407
 408         // compute absolute sizes of vertical structure
 409         for (row_type row = 0; row < nrows(); ++row) {
 410                 int asc  = 0;
 411                 int desc = 0;
 412                 for (col_type col = 0; col < ncols(); ++col) {
 413                         idx_type const i = index(row, col);
 414                         if (cellinfo_[i].multi_ != CELL_PART_OF_MULTICOLUMN) {
 415                                 Dimension const & dimc = cell(i).dimension(bv);
 416                                 asc  = max(asc,  dimc.asc);
 417                                 desc = max(desc, dimc.des);
 418                         }
 419                 }
 420                 rowinfo_[row].ascent_  = asc;
 421                 rowinfo_[row].descent_ = desc;
 422         }
 423         rowinfo_[nrows()].ascent_  = 0;
 424         rowinfo_[nrows()].descent_ = 0;
 425
 426         // compute vertical offsets
 427         rowinfo_[0].offset_ = 0;
 428         for (row_type row = 1; row <= nrows(); ++row) {
 429                 rowinfo_[row].offset_ =
 430                         rowinfo_[row - 1].offset_ +
 431                         rowinfo_[row - 1].descent_ +
 432                         rowinfo_[row - 1].skipPixels(mi) +
 433                         rowsep() +
 434                         rowinfo_[row].lines_ * hlinesep() +
 435                         rowinfo_[row].ascent_;
 436         }
 437
 438         // adjust vertical offset
 439         int h = 0;
 440         switch (v_align_) {
 441                 case 't':
 442                         h = 0;
 443                         break;
 444                 case 'b':
 445                         h = rowinfo_[nrows() - 1].offset_;
 446                         break;
 447                 default:
 448                         h = rowinfo_[nrows() - 1].offset_ / 2;
 449         }
 450         for (row_type row = 0; row <= nrows(); ++row)
 451                 rowinfo_[row].offset_ -= h;
 452
 453
 454         // multicolumn cell widths, as a map from first column to width in a
 455         // vector of last columns.
 456         // This is only used if the grid has more than one row, since for
 457         // one-row grids multicolumn cells do not need special handling
 458         vector<map<col_type, int> > mcolwidths(ncols());
 459
 460         // compute absolute sizes of horizontal structure
 461         for (col_type col = 0; col < ncols(); ++col) {
 462                 int wid = 0;
 463                 for (row_type row = 0; row < nrows(); ++row) {
 464                         idx_type const i = index(row, col);
 465                         if (cellinfo_[i].multi_ != CELL_PART_OF_MULTICOLUMN) {
 466                                 int const w = cell(i).dimension(bv).wid;
 467                                 col_type const cols = ncellcols(i);
 468                                 if (cols > 1 && nrows() > 1) {
 469                                         col_type last = col+cols-1;
 470                                         LASSERT(last < ncols(), last = ncols()-1);
 471                                         map<col_type, int>::iterator it =
 472                                                 mcolwidths[last].find(col);
 473                                         if (it == mcolwidths[last].end())
 474                                                 mcolwidths[last][col] = w;
 475                                         else
 476                                                 it->second = max(it->second, w);
 477                                 } else
 478                                         wid = max(wid, w);
 479                         }
 480                 }
 481                 colinfo_[col].width_ = wid;
 482         }
 483         colinfo_[ncols()].width_  = 0;
 484
 485         // compute horizontal offsets
 486         colinfo_[0].offset_ = border() + colinfo_[0].lines_ * vlinesep();;
 487         for (col_type col = 1; col <= ncols(); ++col) {
 488                 colinfo_[col].offset_ =
 489                         colinfo_[col - 1].offset_ +
 490                         colinfo_[col - 1].width_ +
 491                         displayColSpace(col - 1) +
 492                         colsep() +
 493                         colinfo_[col].lines_ * vlinesep();
 494         }
 495
 496         // increase column widths for multicolumn cells if needed
 497         // FIXME: multicolumn lines are not yet considered
 498         for (col_type last = 0; last < ncols(); ++last) {
 499                 map<col_type, int> const & widths = mcolwidths[last];
 500                 // We increase the width of the last column of the multicol
 501                 // cell (some sort of left alignment). Since we iterate through
 502                 // the last and the first columns from left to right, we ensure
 503                 // that increased widths of previous columns are correctly
 504                 // taken into account for later columns, thus preventing
 505                 // unneeded width increasing.
 506                 for (map<col_type, int>::const_iterator it = widths.begin();
 507                      it != widths.end(); ++it) {
 508                         int const wid = it->second;
 509                         col_type const first = it->first;
 510                         int const nextoffset =
 511                                 colinfo_[first].offset_ +
 512                                 wid +
 513                                 displayColSpace(last) +
 514                                 colsep() +
 515                                 colinfo_[last+1].lines_ * vlinesep();
 516                         int const dx = nextoffset - colinfo_[last+1].offset_;
 517                         if (dx > 0) {
 518                                 colinfo_[last].width_ += dx;
 519                                 for (col_type col = last + 1; col <= ncols(); ++col)
 520                                         colinfo_[col].offset_ += dx;
 521                         }
 522                 }
 523         }
 524
 525
 526         dim.wid = colinfo_[ncols() - 1].offset_
 527                 + colinfo_[ncols() - 1].width_
 528                 + vlinesep() * colinfo_[ncols()].lines_
 529                 + border();
 530
 531         dim.asc = - rowinfo_[0].offset_
 532                 + rowinfo_[0].ascent_
 533                 + hlinesep() * rowinfo_[0].lines_
 534                 + border();
 535
 536         dim.des = rowinfo_[nrows() - 1].offset_
 537                 + rowinfo_[nrows() - 1].descent_
 538                 + hlinesep() * rowinfo_[nrows()].lines_
 539                 + border() + 1;
 540
 541
 542 /*
 543         // Increase ws_[i] for 'R' columns (except the first one)
 544         for (int i = 1; i < nc_; ++i)
 545                 if (align_[i] == 'R')
 546                         ws_[i] += 10 * df_width;
 547         // Increase ws_[i] for 'C' column
 548         if (align_[0] == 'C')
 549                 if (ws_[0] < 7 * workwidth / 8)
 550                         ws_[0] = 7 * workwidth / 8;
 551
 552         // Adjust local tabs
 553         width = colsep();
 554         for (cxrow = row_.begin(); cxrow; ++cxrow) {
 555                 int rg = COLSEP;
 556                 int lf = 0;
 557                 for (int i = 0; i < nc_; ++i) {
 558                         bool isvoid = false;
 559                         if (cxrow->getTab(i) <= 0) {
 560                                 cxrow->setTab(i, df_width);
 561                                 isvoid = true;
 562                         }
 563                         switch (align_[i]) {
 564                         case 'l':
 565                                 lf = 0;
 566                                 break;
 567                         case 'c':
 568                                 lf = (ws_[i] - cxrow->getTab(i))/2;
 569                                 break;
 570                         case 'r':
 571                         case 'R':
 572                                 lf = ws_[i] - cxrow->getTab(i);
 573                                 break;
 574                         case 'C':
 575                                 if (cxrow == row_.begin())
 576                                         lf = 0;
 577                                 else if (cxrow.is_last())
 578                                         lf = ws_[i] - cxrow->getTab(i);
 579                                 else
 580                                         lf = (ws_[i] - cxrow->getTab(i))/2;
 581                                 break;
 582                         }
 583                         int const ww = (isvoid) ? lf : lf + cxrow->getTab(i);
 584                         cxrow->setTab(i, lf + rg);
 585                         rg = ws_[i] - ww + colsep();
 586                         if (cxrow == row_.begin())
 587                                 width += ws_[i] + colsep();
 588                 }
 589                 cxrow->setBaseline(cxrow->getBaseline() - ascent);
 590         }
 591 */
 592         dim.wid += leftMargin() + rightMargin();
 593 }
 594
 595
 596 int InsetMathGrid::vLineHOffset(col_type col, unsigned int line) const
 597 {
 598         if (col < ncols())
 599                 return leftMargin() + colinfo_[col].offset_
 600                         - (colinfo_[col].lines_ - line - 1) * vlinesep()
 601                         - vlinesep()/2 - colsep()/2;
 602         else {
 603                 LASSERT(col == ncols(), return 0);
 604                 return leftMargin() + colinfo_[col-1].offset_ + colinfo_[col-1].width_
 605                         + line * vlinesep()
 606                         + vlinesep()/2 + colsep()/2;
 607         }
 608 }
 609
 610
 611 int InsetMathGrid::hLineVOffset(row_type row, unsigned int line) const
 612 {
 613         return rowinfo_[row].offset_
 614                 - rowinfo_[row].ascent_
 615                 - line * hlinesep()
 616                 - hlinesep()/2 - rowsep()/2;
 617 }
 618
 619
 620 void InsetMathGrid::draw(PainterInfo & pi, int x, int y) const
 621 {
 622         BufferView const & bv = *pi.base.bv;
 623
 624         for (idx_type idx = 0; idx < nargs(); ++idx) {
 625                 if (cellinfo_[idx].multi_ != CELL_PART_OF_MULTICOLUMN) {
 626                         cell(idx).draw(pi,
 627                                        x + leftMargin() + cellXOffset(bv, idx),
 628                                        y + cellYOffset(idx));
 629
 630                         row_type r = row(idx);
 631                         int const yy1 = y + hLineVOffset(r, 0);
 632                         int const yy2 = y + hLineVOffset(r + 1, rowinfo_[r + 1].lines_ - 1);
 633                         auto draw_left_borders = [&](col_type c) {
 634                                 for (unsigned int i = 0; i < colinfo_[c].lines_; ++i) {
 635                                         int const xx = x + vLineHOffset(c, i);
 636                                         pi.pain.line(xx, yy1, xx, yy2, Color_foreground);
 637                                 }
 638                         };
 639                         col_type c = col(idx);
 640                         // Draw inner left borders cell-by-cell because of multicolumns
 641                         draw_left_borders(c);
 642                         // Draw the right border (only once)
 643                         if (c == 0)
 644                                 draw_left_borders(ncols());
 645                 }
 646         }
 647
 648         // Draw horizontal borders
 649         for (row_type r = 0; r <= nrows(); ++r) {
 650                 int const xx1 = x + vLineHOffset(0, 0);
 651                 int const xx2 = x + vLineHOffset(ncols(), colinfo_[ncols()].lines_ - 1);
 652                 for (unsigned int i = 0; i < rowinfo_[r].lines_; ++i) {
 653                         int const yy = y + hLineVOffset(r, i);
 654                         pi.pain.line(xx1, yy, xx2, yy, Color_foreground);
 655                 }
 656         }
 657 }
 658
 659
 660 void InsetMathGrid::metricsT(TextMetricsInfo const & mi, Dimension & dim) const
 661 {
 662         // let the cells adjust themselves
 663         for (idx_type i = 0; i < nargs(); ++i)
 664                 if (cellinfo_[i].multi_ != CELL_PART_OF_MULTICOLUMN)
 665                         cell(i).metricsT(mi, dim);
 666
 667         // compute absolute sizes of vertical structure
 668         for (row_type row = 0; row < nrows(); ++row) {
 669                 int asc  = 0;
 670                 int desc = 0;
 671                 for (col_type col = 0; col < ncols(); ++col) {
 672                         idx_type const i = index(row, col);
 673                         if (cellinfo_[i].multi_ != CELL_PART_OF_MULTICOLUMN) {
 674                                 //MathData const & c = cell(i);
 675                                 // FIXME: BROKEN!
 676                                 Dimension dimc;
 677                                 asc  = max(asc,  dimc.ascent());
 678                                 desc = max(desc, dimc.descent());
 679                         }
 680                 }
 681                 rowinfo_[row].ascent_  = asc;
 682                 rowinfo_[row].descent_ = desc;
 683         }
 684         rowinfo_[nrows()].ascent_  = 0;
 685         rowinfo_[nrows()].descent_ = 0;
 686
 687         // compute vertical offsets
 688         rowinfo_[0].offset_ = 0;
 689         for (row_type row = 1; row <= nrows(); ++row) {
 690                 rowinfo_[row].offset_  =
 691                         rowinfo_[row - 1].offset_  +
 692                         rowinfo_[row - 1].descent_ +
 693                         //rowinfo_[row - 1].skipPixels(mi) +
 694                         1 + //rowsep() +
 695                         //rowinfo_[row].lines_ * hlinesep() +
 696                         rowinfo_[row].ascent_;
 697         }
 698
 699         // adjust vertical offset
 700         int h = 0;
 701         switch (v_align_) {
 702                 case 't':
 703                         h = 0;
 704                         break;
 705                 case 'b':
 706                         h = rowinfo_[nrows() - 1].offset_;
 707                         break;
 708                 default:
 709                         h = rowinfo_[nrows() - 1].offset_ / 2;
 710         }
 711         for (row_type row = 0; row <= nrows(); ++row)
 712                 rowinfo_[row].offset_ -= h;
 713
 714
 715         // compute absolute sizes of horizontal structure
 716         for (col_type col = 0; col < ncols(); ++col) {
 717                 int wid = 0;
 718                 for (row_type row = 0; row < nrows(); ++row) {
 719                         // FIXME: BROKEN!
 720                         //idx_type const i = index(row, col);
 721                         //if (cellinfo_[i].multi_ != CELL_PART_OF_MULTICOLUMN)
 722                         //      wid = max(wid, cell(i).width());
 723                 }
 724                 colinfo_[col].width_ = wid;
 725         }
 726         colinfo_[ncols()].width_  = 0;
 727
 728         // compute horizontal offsets
 729         colinfo_[0].offset_ = border();
 730         for (col_type col = 1; col <= ncols(); ++col) {
 731                 colinfo_[col].offset_ =
 732                         colinfo_[col - 1].offset_ +
 733                         colinfo_[col - 1].width_ +
 734                         displayColSpace(col - 1) +
 735                         1 ; //colsep() +
 736                         //colinfo_[col].lines_ * vlinesep();
 737         }
 738
 739
 740         dim.wid  =  colinfo_[ncols() - 1].offset_
 741                        + colinfo_[ncols() - 1].width_
 742                  //+ vlinesep() * colinfo_[ncols()].lines_
 743                        + 2;
 744
 745         dim.asc  = -rowinfo_[0].offset_
 746                        + rowinfo_[0].ascent_
 747                  //+ hlinesep() * rowinfo_[0].lines_
 748                        + 1;
 749
 750         dim.des  =  rowinfo_[nrows() - 1].offset_
 751                        + rowinfo_[nrows() - 1].descent_
 752                  //+ hlinesep() * rowinfo_[nrows()].lines_
 753                        + 1;
 754 }
 755
 756
 757 void InsetMathGrid::drawT(TextPainter & /*pain*/, int /*x*/, int /*y*/) const
 758 {
 759 //      for (idx_type idx = 0; idx < nargs(); ++idx)
 760 //              if (cellinfo_[idx].multi_ != CELL_PART_OF_MULTICOLUMN)
 761 //                      cell(idx).drawT(pain, x + cellXOffset(idx), y + cellYOffset(idx));
 762 }
 763
 764
 765 void InsetMathGrid::updateBuffer(ParIterator const & it, UpdateType utype)
 766 {
 767         // pass down
 768         for (idx_type idx = 0; idx < nargs(); ++idx)
 769                 if (cellinfo_[idx].multi_ != CELL_PART_OF_MULTICOLUMN)
 770                         cell(idx).updateBuffer(it, utype);
 771 }
 772
 773
 774 docstring InsetMathGrid::eolString(row_type row, bool fragile,
 775                 bool /*latex*/, bool last_eoln) const
 776 {
 777         docstring eol;
 778
 779         if (!rowinfo_[row].crskip_.zero())
 780                 eol += '[' + from_utf8(rowinfo_[row].crskip_.asLatexString()) + ']';
 781         else if(!rowinfo_[row].allow_newpage_)
 782                 eol += '*';
 783
 784         // make sure an upcoming '[' does not break anything
 785         if (row + 1 < nrows()) {
 786                 MathData const & c = cell(index(row + 1, 0));
 787                 if (!c.empty() && c.front()->getChar() == '[')
 788                         //eol += "[0pt]";
 789                         eol += "{}";
 790         }
 791
 792         // only add \\ if necessary
 793         if (eol.empty() && row + 1 == nrows() && (nrows() == 1 || !last_eoln))
 794                 return docstring();
 795
 796         return (fragile ? "\\protect\\\\" : "\\\\") + eol;
 797 }
 798
 799
 800 docstring InsetMathGrid::eocString(col_type col, col_type lastcol) const
 801 {
 802         if (col + 1 == lastcol)
 803                 return docstring();
 804         return from_ascii(" & ");
 805 }
 806
 807
 808 void InsetMathGrid::addRow(row_type row)
 809 {
 810         rowinfo_.insert(rowinfo_.begin() + row + 1, RowInfo());
 811         cells_.insert
 812                 (cells_.begin() + (row + 1) * ncols(), ncols(), MathData(buffer_));
 813         cellinfo_.insert
 814                 (cellinfo_.begin() + (row + 1) * ncols(), ncols(), CellInfo());
 815 }
 816
 817
 818 void InsetMathGrid::delRow(row_type row)
 819 {
 820         if (nrows() == 1)
 821                 return;
 822
 823         cells_type::iterator it = cells_.begin() + row * ncols();
 824         cells_.erase(it, it + ncols());
 825
 826         vector<CellInfo>::iterator jt = cellinfo_.begin() + row * ncols();
 827         cellinfo_.erase(jt, jt + ncols());
 828
 829         rowinfo_.erase(rowinfo_.begin() + row);
 830 }
 831
 832
 833 void InsetMathGrid::copyRow(row_type row)
 834 {
 835         addRow(row);
 836         for (col_type col = 0; col < ncols(); ++col) {
 837                 cells_[(row + 1) * ncols() + col] = cells_[row * ncols() + col];
 838                 // copying the cell does not set the buffer
 839                 cells_[(row + 1) * ncols() + col].setBuffer(*buffer_);
 840         }
 841 }
 842
 843
 844 void InsetMathGrid::swapRow(row_type row)
 845 {
 846         if (nrows() == 1)
 847                 return;
 848         if (row + 1 == nrows())
 849                 --row;
 850         for (col_type col = 0; col < ncols(); ++col)
 851                 swap(cells_[row * ncols() + col], cells_[(row + 1) * ncols() + col]);
 852 }
 853
 854
 855 void InsetMathGrid::addCol(col_type newcol)
 856 {
 857         const col_type nc = ncols();
 858         const row_type nr = nrows();
 859         cells_type new_cells((nc + 1) * nr);
 860         vector<CellInfo> new_cellinfo((nc + 1) * nr);
 861
 862         for (row_type row = 0; row < nr; ++row)
 863                 for (col_type col = 0; col < nc; ++col) {
 864                         new_cells[row * (nc + 1) + col + (col >= newcol)]
 865                                 = cells_[row * nc + col];
 866                         new_cellinfo[row * (nc + 1) + col + (col >= newcol)]
 867                                 = cellinfo_[row * nc + col];
 868                 }
 869         swap(cells_, new_cells);
 870         // copying cells loses the buffer reference
 871         setBuffer(*buffer_);
 872         swap(cellinfo_, new_cellinfo);
 873
 874         ColInfo inf;
 875         inf.skip_  = defaultColSpace(newcol);
 876         inf.align_ = defaultColAlign(newcol);
 877         colinfo_.insert(colinfo_.begin() + newcol, inf);
 878 }
 879
 880
 881 void InsetMathGrid::delCol(col_type col)
 882 {
 883         if (ncols() == 1)
 884                 return;
 885
 886         cells_type tmpcells;
 887         vector<CellInfo> tmpcellinfo;
 888         for (col_type i = 0; i < nargs(); ++i)
 889                 if (i % ncols() != col) {
 890                         tmpcells.push_back(cells_[i]);
 891                         tmpcellinfo.push_back(cellinfo_[i]);
 892                 }
 893         swap(cells_, tmpcells);
 894         swap(cellinfo_, tmpcellinfo);
 895
 896         colinfo_.erase(colinfo_.begin() + col);
 897 }
 898
 899
 900 void InsetMathGrid::copyCol(col_type col)
 901 {
 902         addCol(col+1);
 903         for (row_type row = 0; row < nrows(); ++row) {
 904                 cells_[row * ncols() + col + 1] = cells_[row * ncols() + col];
 905                 // copying the cell does not set the buffer
 906                 cells_[row * ncols() + col + 1].setBuffer(*buffer_);
 907         }
 908 }
 909
 910
 911 void InsetMathGrid::swapCol(col_type col)
 912 {
 913         if (ncols() == 1)
 914                 return;
 915         if (col + 1 == ncols())
 916                 --col;
 917         for (row_type row = 0; row < nrows(); ++row)
 918                 swap(cells_[row * ncols() + col], cells_[row * ncols() + col + 1]);
 919 }
 920
 921
 922 int InsetMathGrid::cellXOffset(BufferView const & bv, idx_type idx) const
 923 {
 924         if (cellinfo_[idx].multi_ == CELL_PART_OF_MULTICOLUMN)
 925                 return 0;
 926         col_type c = col(idx);
 927         int x = colinfo_[c].offset_;
 928         char align = displayColAlign(idx);
 929         Dimension const & celldim = cell(idx).dimension(bv);
 930         if (align == 'r' || align == 'R')
 931                 x += cellWidth(idx) - celldim.wid;
 932         if (align == 'c' || align == 'C')
 933                 x += (cellWidth(idx) - celldim.wid) / 2;
 934         return x;
 935 }
 936
 937
 938 int InsetMathGrid::cellYOffset(idx_type idx) const
 939 {
 940         return rowinfo_[row(idx)].offset_;
 941 }
 942
 943
 944 int InsetMathGrid::cellWidth(idx_type idx) const
 945 {
 946         switch (cellinfo_[idx].multi_) {
 947         case CELL_NORMAL:
 948                 return colinfo_[col(idx)].width_;
 949         case CELL_BEGIN_OF_MULTICOLUMN: {
 950                 col_type c1 = col(idx);
 951                 col_type c2 = c1 + ncellcols(idx);
 952                 return colinfo_[c2].offset_
 953                         - colinfo_[c1].offset_
 954                         - displayColSpace(c2)
 955                         - colsep()
 956                         - colinfo_[c2].lines_ * vlinesep();
 957         }
 958         case CELL_PART_OF_MULTICOLUMN:
 959                 return 0;
 960         }
 961         return 0;
 962 }
 963
 964
 965 bool InsetMathGrid::idxUpDown(Cursor & cur, bool up) const
 966 {
 967         if (up) {
 968                 if (cur.row() == 0)
 969                         return false;
 970                 cur.idx() -= ncols();
 971         } else {
 972                 if (cur.row() + 1 >= nrows())
 973                         return false;
 974                 cur.idx() += ncols();
 975         }
 976         // If we are in a multicolumn cell, move to the "real" cell
 977         while (cellinfo_[cur.idx()].multi_ == CELL_PART_OF_MULTICOLUMN) {
 978                 LASSERT(cur.idx() > 0, return false);
 979                 --cur.idx();
 980         }
 981         // FIXME: this is only a workaround to avoid a crash if the inset
 982         // in not in coord cache. The best would be to force a FitCursor
 983         // operation.
 984         CoordCache::Arrays const & arraysCache = cur.bv().coordCache().arrays();
 985         if (arraysCache.has(&cur.cell()))
 986                 cur.pos() = cur.cell().x2pos(&cur.bv(), cur.x_target() - cur.cell().xo(cur.bv()));
 987         else
 988                 cur.pos() = 0;
 989         return true;
 990 }
 991
 992
 993 bool InsetMathGrid::idxBackward(Cursor & cur) const
 994 {
 995         // leave matrix if at the front edge
 996         if (cur.col() == 0)
 997                 return false;
 998         --cur.idx();
 999         // If we are in a multicolumn cell, move to the "real" cell
1000         while (cellinfo_[cur.idx()].multi_ == CELL_PART_OF_MULTICOLUMN) {
1001                 LASSERT(cur.idx() > 0, return false);
1002                 --cur.idx();
1003         }
1004         cur.pos() = cur.lastpos();
1005         return true;
1006 }
1007
1008
1009 bool InsetMathGrid::idxForward(Cursor & cur) const
1010 {
1011         // leave matrix if at the back edge
1012         if (cur.col() + 1 == ncols())
1013                 return false;
1014         ++cur.idx();
1015         // If we are in a multicolumn cell, move to the next cell
1016         while (cellinfo_[cur.idx()].multi_ == CELL_PART_OF_MULTICOLUMN) {
1017                 // leave matrix if at the back edge
1018                 if (cur.col() + 1 == ncols())
1019                         return false;
1020                 ++cur.idx();
1021         }
1022         cur.pos() = 0;
1023         return true;
1024 }
1025
1026
1027 idx_type InsetMathGrid::firstIdx() const
1028 {
1029         size_type idx = 0;
1030         switch (v_align_) {
1031                 case 't':
1032                         //idx = 0;
1033                         break;
1034                 case 'b':
1035                         idx = (nrows() - 1) * ncols();
1036                         break;
1037                 default:
1038                         idx = ((nrows() - 1) / 2) * ncols();
1039         }
1040         // If we are in a multicolumn cell, move to the "real" cell
1041         while (cellinfo_[idx].multi_ == CELL_PART_OF_MULTICOLUMN) {
1042                 LASSERT(idx > 0, return 0);
1043                 --idx;
1044         }
1045         return idx;
1046 }
1047
1048
1049 idx_type InsetMathGrid::lastIdx() const
1050 {
1051         size_type idx = 0;
1052         switch (v_align_) {
1053                 case 't':
1054                         idx = ncols() - 1;
1055                         break;
1056                 case 'b':
1057                         idx = nargs() - 1;
1058                         break;
1059                 default:
1060                         idx = ((nrows() - 1) / 2 + 1) * ncols() - 1;
1061         }
1062         // If we are in a multicolumn cell, move to the "real" cell
1063         while (cellinfo_[idx].multi_ == CELL_PART_OF_MULTICOLUMN) {
1064                 LASSERT(idx > 0, return false);
1065                 --idx;
1066         }
1067         return idx;
1068 }
1069
1070
1071 bool InsetMathGrid::idxDelete(idx_type & idx)
1072 {
1073         // nothing to do if we have just one row
1074         if (nrows() == 1)
1075                 return false;
1076
1077         // nothing to do if we are in the middle of the last row of the inset
1078         if (idx + ncols() > nargs())
1079                 return false;
1080
1081         // try to delete entire sequence of ncols() empty cells if possible
1082         for (idx_type i = idx; i < idx + ncols(); ++i)
1083                 if (!cell(i).empty())
1084                         return false;
1085
1086         // move cells if necessary
1087         for (idx_type i = index(row(idx), 0); i < idx; ++i)
1088                 swap(cell(i), cell(i + ncols()));
1089
1090         delRow(row(idx));
1091
1092         if (idx >= nargs())
1093                 idx = nargs() - 1;
1094
1095         // undo effect of Ctrl-Tab (i.e. pull next cell)
1096         //if (idx + 1 != nargs())
1097         //      cell(idx).swap(cell(idx + 1));
1098
1099         // we handled the event..
1100         return true;
1101 }
1102
1103
1104 // reimplement old behaviour when pressing Delete in the last position
1105 // of a cell
1106 void InsetMathGrid::idxGlue(idx_type idx)
1107 {
1108         col_type c = col(idx);
1109         if (c + 1 == ncols()) {
1110                 if (row(idx) + 1 != nrows()) {
1111                         for (col_type cc = 0; cc < ncols(); ++cc)
1112                                 cell(idx).append(cell(idx + cc + 1));
1113                         delRow(row(idx) + 1);
1114                 }
1115         } else {
1116                 idx_type idx_next = idx + 1;
1117                 while (idx_next < nargs() &&
1118                        cellinfo_[idx_next].multi_ == CELL_PART_OF_MULTICOLUMN)
1119                         ++idx_next;
1120                 if (idx_next < nargs())
1121                         cell(idx).append(cell(idx_next));
1122                 col_type oldcol = c + 1;
1123                 for (col_type cc = c + 2; cc < ncols(); ++cc)
1124                         cell(idx - oldcol + cc) = cell(idx - oldcol + 1 + cc);
1125                 cell(idx - c + ncols() - 1).clear();
1126         }
1127 }
1128
1129
1130 InsetMathGrid::RowInfo const & InsetMathGrid::rowinfo(row_type row) const
1131 {
1132         return rowinfo_[row];
1133 }
1134
1135
1136 InsetMathGrid::RowInfo & InsetMathGrid::rowinfo(row_type row)
1137 {
1138         return rowinfo_[row];
1139 }
1140
1141
1142 bool InsetMathGrid::idxBetween(idx_type idx, idx_type from, idx_type to) const
1143 {
1144         row_type const ri = row(idx);
1145         row_type const r1 = min(row(from), row(to));
1146         row_type const r2 = max(row(from), row(to));
1147         col_type const ci = col(idx);
1148         col_type const c1 = min(col(from), col(to));
1149         col_type const c2 = max(col(from), col(to));
1150         return r1 <= ri && ri <= r2 && c1 <= ci && ci <= c2;
1151 }
1152
1153
1154 void InsetMathGrid::normalize(NormalStream & os) const
1155 {
1156         os << "[grid ";
1157         for (row_type row = 0; row < nrows(); ++row) {
1158                 os << "[row ";
1159                 for (col_type col = 0; col < ncols(); ++col) {
1160                         idx_type const i = index(row, col);
1161                         switch (cellinfo_[i].multi_) {
1162                         case CELL_NORMAL:
1163                                 os << "[cell " << cell(i) << ']';
1164                                 break;
1165                         case CELL_BEGIN_OF_MULTICOLUMN:
1166                                 os << "[cell colspan="
1167                                    << static_cast<int>(ncellcols(i)) << ' '
1168                                    << cell(i) << ']';
1169                                 break;
1170                         case CELL_PART_OF_MULTICOLUMN:
1171                                 break;
1172                         }
1173                 }
1174                 os << ']';
1175         }
1176         os << ']';
1177 }
1178
1179
1180 void InsetMathGrid::mathmlize(MathStream & os) const
1181 {
1182         bool const havetable = nrows() > 1 || ncols() > 1;
1183         if (havetable)
1184                 os << MTag("mtable");
1185         char const * const celltag = havetable ? "mtd" : "mrow";
1186         for (row_type row = 0; row < nrows(); ++row) {
1187                 if (havetable)
1188                         os << MTag("mtr");
1189                 for (col_type col = 0; col < ncols(); ++col) {
1190                         idx_type const i = index(row, col);
1191                         if (cellinfo_[i].multi_ != CELL_PART_OF_MULTICOLUMN) {
1192                                 col_type const cellcols = ncellcols(i);
1193                                 ostringstream attr;
1194                                 if (havetable && cellcols > 1)
1195                                         attr << "colspan='" << cellcols << '\'';
1196                                 os << MTag(celltag, attr.str());
1197                                 os << cell(index(row, col));
1198                                 os << ETag(celltag);
1199                         }
1200                 }
1201                 if (havetable)
1202                         os << ETag("mtr");
1203         }
1204         if (havetable)
1205                 os << ETag("mtable");
1206 }
1207
1208
1209 // FIXME XHTML
1210 // We need to do something about alignment here.
1211 void InsetMathGrid::htmlize(HtmlStream & os, string attrib) const
1212 {
1213         bool const havetable = nrows() > 1 || ncols() > 1;
1214         if (!havetable) {
1215                 os << cell(index(0, 0));
1216                 return;
1217         }
1218         os << MTag("table", attrib);
1219         for (row_type row = 0; row < nrows(); ++row) {
1220                 os << MTag("tr");
1221                 for (col_type col = 0; col < ncols(); ++col) {
1222                         idx_type const i = index(row, col);
1223                         if (cellinfo_[i].multi_ != CELL_PART_OF_MULTICOLUMN) {
1224                                 col_type const cellcols = ncellcols(i);
1225                                 ostringstream attr;
1226                                 if (cellcols > 1)
1227                                         attr << "colspan='" << cellcols << '\'';
1228                                 os << MTag("td", attr.str());
1229                                 os << cell(index(row, col));
1230                                 os << ETag("td");
1231                         }
1232                 }
1233                 os << ETag("tr");
1234         }
1235         os << ETag("table");
1236 }
1237
1238
1239 void InsetMathGrid::htmlize(HtmlStream & os) const
1240 {
1241         htmlize(os, "class='mathtable'");
1242 }
1243
1244
1245 void InsetMathGrid::validate(LaTeXFeatures & features) const
1246 {
1247         if (features.runparams().math_flavor == OutputParams::MathAsHTML
1248             && (nrows() > 1 || ncols() > 1)) {
1249                 // CSS taken from InsetMathCases
1250                 features.addCSSSnippet(
1251                         "table.mathtable{display: inline-block; text-align: center; border: none;"
1252                         "border-left: thin solid black; vertical-align: middle; padding-left: 0.5ex;}\n"
1253                         "table.mathtable td {text-align: left; border: none;}");
1254         }
1255         InsetMathNest::validate(features);
1256 }
1257
1258
1259 void InsetMathGrid::write(WriteStream & os) const
1260 {
1261         write(os, 0, 0, nrows(), ncols());
1262 }
1263
1264 void InsetMathGrid::write(WriteStream & os,
1265                           row_type beg_row, col_type beg_col,
1266                           row_type end_row, col_type end_col) const
1267 {
1268         MathEnsurer ensurer(os, false);
1269         docstring eol;
1270         for (row_type row = beg_row; row < end_row; ++row) {
1271                 os << verboseHLine(rowinfo_[row].lines_);
1272                 // don't write & and empty cells at end of line,
1273                 // unless there are vertical lines
1274                 col_type lastcol = 0;
1275                 bool emptyline = true;
1276                 bool last_eoln = true;
1277                 for (col_type col = beg_col; col < end_col; ++col) {
1278                         idx_type const idx = index(row, col);
1279                         bool const empty_cell = cell(idx).empty();
1280                         if (!empty_cell || cellinfo_[idx].multi_ != CELL_NORMAL)
1281                                 last_eoln = false;
1282                         if (!empty_cell || cellinfo_[idx].multi_ != CELL_NORMAL ||
1283                             colinfo_[col + 1].lines_) {
1284                                 lastcol = col + 1;
1285                                 emptyline = false;
1286                         }
1287                 }
1288                 for (col_type col = beg_col; col < end_col;) {
1289                         int nccols = 1;
1290                         idx_type const idx = index(row, col);
1291                         TexRow::RowEntry entry = TexRow::mathEntry(id(),idx);
1292                         os.texrow().start(entry);
1293                         if (col >= lastcol) {
1294                                 ++col;
1295                                 continue;
1296                         }
1297                         Changer dummy = os.changeRowEntry(entry);
1298                         if (cellinfo_[idx].multi_ == CELL_BEGIN_OF_MULTICOLUMN) {
1299                                 size_t s = col + 1;
1300                                 while (s < ncols() &&
1301                                        cellinfo_[index(row, s)].multi_ == CELL_PART_OF_MULTICOLUMN)
1302                                         s++;
1303                                 nccols = s - col;
1304                                 os << "\\multicolumn{" << nccols
1305                                    << "}{" << cellinfo_[idx].align_
1306                                    << "}{";
1307                         }
1308                         os << cell(idx);
1309                         if (os.pendingBrace())
1310                                 ModeSpecifier specifier(os, TEXT_MODE);
1311                         if (cellinfo_[idx].multi_ == CELL_BEGIN_OF_MULTICOLUMN)
1312                                 os << '}';
1313                         os << eocString(col + nccols - 1, lastcol);
1314                         col += nccols;
1315                 }
1316                 eol = eolString(row, os.fragile(), os.latex(), last_eoln);
1317                 os << eol;
1318                 // append newline only if line wasn't completely empty
1319                 // and the formula is not written on a single line
1320                 bool const empty = emptyline && eol.empty();
1321                 if (!empty && nrows() > 1)
1322                         os << "\n";
1323         }
1324         // @TODO use end_row instead of nrows() ?
1325         docstring const s = verboseHLine(rowinfo_[nrows()].lines_);
1326         if (!s.empty()) {
1327                 if (eol.empty()) {
1328                         if (os.fragile())
1329                                 os << "\\protect";
1330                         os << "\\\\";
1331                 }
1332                 os << s;
1333         }
1334 }
1335
1336
1337 int InsetMathGrid::colsep() const
1338 {
1339         return 6;
1340 }
1341
1342
1343 int InsetMathGrid::rowsep() const
1344 {
1345         return 6;
1346 }
1347
1348
1349 int InsetMathGrid::hlinesep() const
1350 {
1351         return 3;
1352 }
1353
1354
1355 int InsetMathGrid::vlinesep() const
1356 {
1357         return 3;
1358 }
1359
1360
1361 int InsetMathGrid::border() const
1362 {
1363         return 1;
1364 }
1365
1366
1367 void InsetMathGrid::splitCell(Cursor & cur)
1368 {
1369         if (cur.idx() == cur.lastidx())
1370                 return;
1371         MathData ar = cur.cell();
1372         ar.erase(0, cur.pos());
1373         cur.cell().erase(cur.pos(), cur.lastpos());
1374         ++cur.idx();
1375         while (cur.idx() << nargs() &&
1376                cellinfo_[cur.idx()].multi_ == CELL_BEGIN_OF_MULTICOLUMN)
1377                 ++cur.idx();
1378         cur.pos() = 0;
1379         cur.cell().insert(0, ar);
1380 }
1381
1382
1383 char InsetMathGrid::displayColAlign(idx_type idx) const
1384 {
1385         if (cellinfo_[idx].multi_ == CELL_BEGIN_OF_MULTICOLUMN) {
1386                 // align_ may also contain lines like "||r|", so this is
1387                 // not complete, but we catch at least the simple cases.
1388                 if (cellinfo_[idx].align_ == "c")
1389                         return 'c';
1390                 if (cellinfo_[idx].align_ == "l")
1391                         return 'l';
1392                 if (cellinfo_[idx].align_ == "r")
1393                         return 'r';
1394         }
1395         return colinfo_[col(idx)].align_;
1396 }
1397
1398
1399 int InsetMathGrid::displayColSpace(col_type col) const
1400 {
1401         return colinfo_[col].skip_;
1402 }
1403
1404 void InsetMathGrid::doDispatch(Cursor & cur, FuncRequest & cmd)
1405 {
1406         //lyxerr << "*** InsetMathGrid: request: " << cmd << endl;
1407
1408         Parse::flags parseflg = Parse::QUIET | Parse::USETEXT;
1409
1410         FuncCode const act = cmd.action();
1411         switch (act) {
1412
1413         // insert file functions
1414         case LFUN_LINE_DELETE_FORWARD:
1415                 cur.recordUndoInset();
1416                 //autocorrect_ = false;
1417                 //macroModeClose();
1418                 //if (selection_) {
1419                 //      selDel();
1420                 //      break;
1421                 //}
1422                 if (nrows() > 1)
1423                         delRow(cur.row());
1424                 if (cur.idx() > cur.lastidx())
1425                         cur.idx() = cur.lastidx();
1426                 if (cur.pos() > cur.lastpos())
1427                         cur.pos() = cur.lastpos();
1428                 break;
1429
1430         case LFUN_CELL_SPLIT:
1431                 cur.recordUndo();
1432                 splitCell(cur);
1433                 break;
1434
1435         case LFUN_CELL_BACKWARD:
1436                 // See below.
1437                 cur.selection(false);
1438                 if (!idxPrev(cur)) {
1439                         cmd = FuncRequest(LFUN_FINISHED_BACKWARD);
1440                         cur.undispatched();
1441                 }
1442                 break;
1443
1444         case LFUN_CELL_FORWARD:
1445                 // Can't handle selection by additional 'shift' as this is
1446                 // hard bound to LFUN_CELL_BACKWARD
1447                 cur.selection(false);
1448                 if (!idxNext(cur)) {
1449                         cmd = FuncRequest(LFUN_FINISHED_FORWARD);
1450                         cur.undispatched();
1451                 }
1452                 break;
1453
1454         case LFUN_NEWLINE_INSERT: {
1455                 cur.recordUndoInset();
1456                 row_type const r = cur.row();
1457                 addRow(r);
1458
1459                 // split line
1460                 for (col_type c = col(cur.idx()) + 1; c < ncols(); ++c)
1461                         swap(cell(index(r, c)), cell(index(r + 1, c)));
1462
1463                 // split cell
1464                 splitCell(cur);
1465                 if (ncols() > 1)
1466                         swap(cell(cur.idx()), cell(cur.idx() + ncols() - 1));
1467                 if (cur.idx() > 0)
1468                         --cur.idx();
1469                 cur.pos() = cur.lastpos();
1470                 cur.forceBufferUpdate();
1471                 //mathcursor->normalize();
1472                 //cmd = FuncRequest(LFUN_FINISHED_BACKWARD);
1473                 break;
1474         }
1475
1476         case LFUN_TABULAR_FEATURE: {
1477                 cur.recordUndoInset();
1478                 //lyxerr << "handling tabular-feature " << to_utf8(cmd.argument()) << endl;
1479                 istringstream is(to_utf8(cmd.argument()));
1480                 string s;
1481                 is >> s;
1482                 if (s == "valign-top")
1483                         setVerticalAlignment('t');
1484                 else if (s == "valign-middle")
1485                         setVerticalAlignment('c');
1486                 else if (s == "valign-bottom")
1487                         setVerticalAlignment('b');
1488                 else if (s == "align-left")
1489                         setHorizontalAlignment('l', cur.col());
1490                 else if (s == "align-right")
1491                         setHorizontalAlignment('r', cur.col());
1492                 else if (s == "align-center")
1493                         setHorizontalAlignment('c', cur.col());
1494                 else if (s == "append-row")
1495                         for (int i = 0, n = extractInt(is); i < n; ++i)
1496                                 addRow(cur.row());
1497                 else if (s == "delete-row") {
1498                         cur.clearSelection(); // bug 4323
1499                         for (int i = 0, n = extractInt(is); i < n; ++i) {
1500                                 delRow(cur.row());
1501                                 if (cur.idx() >= nargs())
1502                                         cur.idx() -= ncols();
1503                         }
1504                         cur.pos() = 0; // trick, see below
1505                 }
1506                 else if (s == "copy-row") {
1507                         // Here (as later) we save the cursor col/row
1508                         // in order to restore it after operation.
1509                         row_type const r = cur.row();
1510                         col_type const c = cur.col();
1511                         for (int i = 0, n = extractInt(is); i < n; ++i)
1512                                 copyRow(cur.row());
1513                         cur.idx() = index(r, c);
1514                 }
1515                 else if (s == "swap-row") {
1516                         swapRow(cur.row());
1517                         // Trick to suppress same-idx-means-different-cell
1518                         // assertion crash:
1519                         cur.pos() = 0;
1520                 }
1521                 else if (s == "add-hline-above")
1522                         rowinfo_[cur.row()].lines_++;
1523                 else if (s == "add-hline-below")
1524                         rowinfo_[cur.row()+1].lines_++;
1525                 else if (s == "delete-hline-above")
1526                         rowinfo_[cur.row()].lines_--;
1527                 else if (s == "delete-hline-below")
1528                         rowinfo_[cur.row()+1].lines_--;
1529                 else if (s == "append-column") {
1530                         row_type const r = cur.row();
1531                         col_type const c = cur.col();
1532                         for (int i = 0, n = extractInt(is); i < n; ++i)
1533                                 addCol(cur.col() + 1);
1534                         cur.idx() = index(r, c);
1535                 }
1536                 else if (s == "delete-column") {
1537                         cur.clearSelection(); // bug 4323
1538                         row_type const r = cur.row();
1539                         col_type const c = cur.col();
1540                         for (int i = 0, n = extractInt(is); i < n; ++i)
1541                                 delCol(col(cur.idx()));
1542                         cur.idx() = index(r, min(c, cur.ncols() - 1));
1543                         cur.pos() = 0; // trick, see above
1544                 }
1545                 else if (s == "copy-column") {
1546                         row_type const r = cur.row();
1547                         col_type const c = cur.col();
1548                         copyCol(cur.col());
1549                         cur.idx() = index(r, c);
1550                 }
1551                 else if (s == "swap-column") {
1552                         swapCol(cur.col());
1553                         cur.pos() = 0; // trick, see above
1554                 }
1555                 else if (s == "add-vline-left") {
1556                         colinfo_[cur.col()].lines_++;
1557                         if (!colinfo_[cur.col()].special_.empty())
1558                                 colinfo_[cur.col()].special_ += '|';
1559                 }
1560                 else if (s == "add-vline-right") {
1561                         colinfo_[cur.col()+1].lines_++;
1562                         if (!colinfo_[cur.col()+1].special_.empty())
1563                                 colinfo_[cur.col()+1].special_.insert(0, 1, '|');
1564                 }
1565                 else if (s == "delete-vline-left") {
1566                         colinfo_[cur.col()].lines_--;
1567                         docstring & special = colinfo_[cur.col()].special_;
1568                         if (!special.empty()) {
1569                                 docstring::size_type i = special.rfind('|');
1570                                 LASSERT(i != docstring::npos, break);
1571                                 special.erase(i, 1);
1572                         }
1573                 }
1574                 else if (s == "delete-vline-right") {
1575                         colinfo_[cur.col()+1].lines_--;
1576                         docstring & special = colinfo_[cur.col()+1].special_;
1577                         if (!special.empty()) {
1578                                 docstring::size_type i = special.find('|');
1579                                 LASSERT(i != docstring::npos, break);
1580                                 special.erase(i, 1);
1581                         }
1582                 }
1583                 else {
1584                         cur.undispatched();
1585                         break;
1586                 }
1587                 // perhaps this should be FINISHED_BACKWARD -- just for clarity?
1588                 //lyxerr << "returning FINISHED_LEFT" << endl;
1589                 break;
1590         }
1591
1592         case LFUN_CLIPBOARD_PASTE:
1593                 parseflg |= Parse::VERBATIM;
1594                 // fall through
1595         case LFUN_PASTE: {
1596                 if (cur.currentMode() != MATH_MODE)
1597                         parseflg |= Parse::TEXTMODE;
1598                 cur.message(_("Paste"));
1599                 cap::replaceSelection(cur);
1600                 docstring topaste;
1601                 if (cmd.argument().empty() && !theClipboard().isInternal())
1602                         topaste = theClipboard().getAsText(frontend::Clipboard::PlainTextType);
1603                 else {
1604                         idocstringstream is(cmd.argument());
1605                         int n = 0;
1606                         is >> n;
1607                         topaste = cap::selection(n, buffer().params().documentClassPtr());
1608                 }
1609                 InsetMathGrid grid(buffer_, 1, 1);
1610                 if (!topaste.empty())
1611                         if ((topaste.size() == 1 && isAscii(topaste))
1612                             || !mathed_parse_normal(grid, topaste, parseflg)) {
1613                                 resetGrid(grid);
1614                                 mathed_parse_normal(grid, topaste, parseflg | Parse::VERBATIM);
1615                         }
1616
1617                 bool hline_enabled = false;
1618                 FuncRequest fr = FuncRequest(LFUN_TABULAR_FEATURE, "add-hline-above");
1619                 FuncStatus status;
1620                 if (getStatus(cur, fr, status))
1621                         hline_enabled = status.enabled();
1622                 if (grid.nargs() == 1) {
1623                         // single cell/part of cell
1624                         cur.recordUndoInset();
1625                         cur.cell().insert(cur.pos(), grid.cell(0));
1626                         cur.pos() += grid.cell(0).size();
1627                         if (hline_enabled)
1628                                 rowinfo_[cur.row()].lines_ += grid.rowinfo_[0].lines_;
1629                         else {
1630                                 for (unsigned int l = 0; l < grid.rowinfo_[0].lines_; ++l) {
1631                                          cur.cell().insert(0,
1632                                                 MathAtom(new InsetMathUnknown(from_ascii("\\hline"))));
1633                                          cur.pos()++;
1634                                 }
1635                         }
1636                 } else {
1637                         // multiple cells
1638                         cur.recordUndoInset();
1639                         col_type const numcols =
1640                                 min(grid.ncols(), ncols() - col(cur.idx()));
1641                         row_type const numrows =
1642                                 min(grid.nrows(), nrows() - cur.row());
1643                         for (row_type r = 0; r < numrows; ++r) {
1644                                 for (col_type c = 0; c < numcols; ++c) {
1645                                         idx_type i = index(r + cur.row(), c + col(cur.idx()));
1646                                         cell(i).insert(0, grid.cell(grid.index(r, c)));
1647                                 }
1648                                 if (hline_enabled)
1649                                         rowinfo_[r].lines_ += grid.rowinfo_[r].lines_;
1650                                 else {
1651                                         for (unsigned int l = 0; l < grid.rowinfo_[r].lines_; ++l) {
1652                                                 idx_type i = index(r + cur.row(), 0);
1653                                                 cell(i).insert(0,
1654                                                         MathAtom(new InsetMathUnknown(from_ascii("\\hline"))));
1655                                         }
1656                                 }
1657                                 // append the left over horizontal cells to the last column
1658                                 idx_type i = index(r + cur.row(), ncols() - 1);
1659                                 for (InsetMath::col_type c = numcols; c < grid.ncols(); ++c)
1660                                         cell(i).append(grid.cell(grid.index(r, c)));
1661                         }
1662                         // append the left over vertical cells to the last _cell_
1663                         idx_type i = nargs() - 1;
1664                         for (row_type r = numrows; r < grid.nrows(); ++r) {
1665                                 for (col_type c = 0; c < grid.ncols(); ++c)
1666                                         cell(i).append(grid.cell(grid.index(r, c)));
1667                                 if (hline_enabled)
1668                                         rowinfo_[r].lines_ += grid.rowinfo_[r].lines_;
1669                                 else {
1670                                         for (unsigned int l = 0; l < grid.rowinfo_[r].lines_; ++l) {
1671                                                 cell(i).insert(0,
1672                                                         MathAtom(new InsetMathUnknown(from_ascii("\\hline"))));
1673                                         }
1674                                 }
1675                         }
1676                 }
1677                 cur.clearSelection(); // bug 393
1678                 // FIXME audit setBuffer calls
1679                 cur.inset().setBuffer(*buffer_);
1680                 cur.forceBufferUpdate();
1681                 cur.finishUndo();
1682                 break;
1683         }
1684
1685         case LFUN_LINE_BEGIN:
1686                 cur.screenUpdateFlags(Update::Decoration | Update::FitCursor);
1687                 // fall through
1688         case LFUN_LINE_BEGIN_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_LINE_END:
1708                 cur.screenUpdateFlags(Update::Decoration | Update::FitCursor);
1709                 // fall through
1710         case LFUN_LINE_END_SELECT:
1711                 cur.selHandle(act == LFUN_WORD_FORWARD_SELECT ||
1712                                 act == LFUN_WORD_RIGHT_SELECT ||
1713                                 act == LFUN_LINE_END_SELECT);
1714                 cur.macroModeClose();
1715                 cur.clearTargetX();
1716                 if (cur.pos() != cur.lastpos()) {
1717                         cur.pos() = cur.lastpos();
1718                 } else if ((cur.idx() + 1) % cur.ncols() != 0) {
1719                         cur.idx() += cur.ncols() - 1 - cur.idx() % cur.ncols();
1720                         cur.pos() = cur.lastpos();
1721                 } else if (cur.idx() != cur.lastidx()) {
1722                         cur.idx() = cur.lastidx();
1723                         cur.pos() = cur.lastpos();
1724                 } else {
1725                         cmd = FuncRequest(LFUN_FINISHED_FORWARD);
1726                         cur.undispatched();
1727                 }
1728                 break;
1729
1730         default:
1731                 InsetMathNest::doDispatch(cur, cmd);
1732         }
1733 }
1734
1735
1736 bool InsetMathGrid::getStatus(Cursor & cur, FuncRequest const & cmd,
1737                 FuncStatus & status) const
1738 {
1739         switch (cmd.action()) {
1740         case LFUN_TABULAR_FEATURE: {
1741                 string s = cmd.getArg(0);
1742                 if (&cur.inset() != this) {
1743                         // Table actions requires that the cursor is _inside_ the
1744                         // table.
1745                         status.setEnabled(false);
1746                         status.message(from_utf8(N_("Cursor not in table")));
1747                         return true;
1748                 }
1749                 if (nrows() <= 1 && (s == "delete-row" || s == "swap-row")) {
1750                         status.setEnabled(false);
1751                         status.message(from_utf8(N_("Only one row")));
1752                         return true;
1753                 }
1754                 if (ncols() <= 1 &&
1755                     (s == "delete-column" || s == "swap-column")) {
1756                         status.setEnabled(false);
1757                         status.message(from_utf8(N_("Only one column")));
1758                         return true;
1759                 }
1760                 if ((rowinfo_[cur.row()].lines_ == 0 &&
1761                      s == "delete-hline-above") ||
1762                     (rowinfo_[cur.row() + 1].lines_ == 0 &&
1763                      s == "delete-hline-below")) {
1764                         status.setEnabled(false);
1765                         status.message(from_utf8(N_("No hline to delete")));
1766                         return true;
1767                 }
1768
1769                 if ((colinfo_[cur.col()].lines_ == 0 &&
1770                      s == "delete-vline-left") ||
1771                     (colinfo_[cur.col() + 1].lines_ == 0 &&
1772                      s == "delete-vline-right")) {
1773                         status.setEnabled(false);
1774                         status.message(from_utf8(N_("No vline to delete")));
1775                         return true;
1776                 }
1777                 if (s == "valign-top" || s == "valign-middle" ||
1778                     s == "valign-bottom" || s == "align-left" ||
1779                     s == "align-right" || s == "align-center") {
1780                         status.setEnabled(true);
1781                         char const ha = horizontalAlignment(cur.col());
1782                         char const va = verticalAlignment();
1783                         status.setOnOff((s == "align-left" && ha == 'l')
1784                                         || (s == "align-right"   && ha == 'r')
1785                                         || (s == "align-center"  && ha == 'c')
1786                                         || (s == "valign-top"    && va == 't')
1787                                         || (s == "valign-bottom" && va == 'b')
1788                                         || (s == "valign-middle" && va == 'c'));
1789                         return true;
1790                 }
1791                 if (s == "append-row" || s == "delete-row" ||
1792                     s == "copy-row" || s == "swap-row" ||
1793                     s == "add-hline-above" || s == "add-hline-below" ||
1794                     s == "delete-hline-above" || s == "delete-hline-below" ||
1795                     s == "append-column" || s == "delete-column" ||
1796                     s == "copy-column" || s == "swap-column" ||
1797                     s == "add-vline-left" || s == "add-vline-right" ||
1798                     s == "delete-vline-left" || s == "delete-vline-right") {
1799                         status.setEnabled(true);
1800                 } else {
1801                         status.setEnabled(false);
1802                         status.message(bformat(
1803                             from_utf8(N_("Unknown tabular feature '%1$s'")),
1804                             from_utf8(s)));
1805                 }
1806
1807 #if 0
1808                 // FIXME: What did this code do?
1809                 // Please check whether it is still needed!
1810                 // should be more precise
1811                 if (v_align_ == '\0') {
1812                         status.enable(true);
1813                         break;
1814                 }
1815                 if (cmd.argument().empty()) {
1816                         status.enable(false);
1817                         break;
1818                 }
1819                 if (!contains("tcb", cmd.argument()[0])) {
1820                         status.enable(false);
1821                         break;
1822                 }
1823                 status.setOnOff(cmd.argument()[0] == v_align_);
1824                 status.setEnabled(true);
1825 #endif
1826                 return true;
1827         }
1828
1829         case LFUN_CELL_SPLIT:
1830                 status.setEnabled(cur.idx() != cur.lastidx());
1831                 return true;
1832
1833         case LFUN_CELL_BACKWARD:
1834         case LFUN_CELL_FORWARD:
1835                 status.setEnabled(true);
1836                 return true;
1837
1838         default:
1839                 break;
1840         }
1841         return InsetMathNest::getStatus(cur, cmd, status);
1842 }
1843
1844
1845 // static
1846 char InsetMathGrid::colAlign(HullType type, col_type col)
1847 {
1848         switch (type) {
1849         case hullEqnArray:
1850                 return "rcl"[col % 3];
1851
1852         case hullMultline:
1853         case hullGather:
1854                 return 'c';
1855
1856         case hullAlign:
1857         case hullAlignAt:
1858         case hullXAlignAt:
1859         case hullXXAlignAt:
1860         case hullFlAlign:
1861                 return "rl"[col & 1];
1862
1863         case hullUnknown:
1864         case hullNone:
1865         case hullSimple:
1866         case hullEquation:
1867         case hullRegexp:
1868                 return 'c';
1869         }
1870         // avoid warning
1871         return 'c';
1872 }
1873
1874
1875 //static
1876 int InsetMathGrid::colSpace(HullType type, col_type col)
1877 {
1878         int alignInterSpace = 0;
1879         switch (type) {
1880         case hullUnknown:
1881         case hullNone:
1882         case hullSimple:
1883         case hullEquation:
1884         case hullMultline:
1885         case hullGather:
1886         case hullRegexp:
1887                 return 0;
1888
1889         case hullEqnArray:
1890                 return 5;
1891
1892         case hullAlign:
1893                 alignInterSpace = 20;
1894                 break;
1895         case hullAlignAt:
1896                 alignInterSpace = 0;
1897                 break;
1898         case hullXAlignAt:
1899                 alignInterSpace = 40;
1900                 break;
1901         case hullXXAlignAt:
1902         case hullFlAlign:
1903                 alignInterSpace = 60;
1904                 break;
1905         }
1906         return (col % 2) ? alignInterSpace : 0;
1907 }
1908
1909
1910 } // namespace lyx