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 "Cursor.h"
  26 #include "CutAndPaste.h"
  27 #include "FuncRequest.h"
  28 #include "FuncStatus.h"
  29 #include "LaTeXFeatures.h"
  30 #include "TexRow.h"
  31
  32 #include "frontends/Clipboard.h"
  33 #include "frontends/Painter.h"
  34
  35 #include "support/debug.h"
  36 #include "support/docstream.h"
  37 #include "support/gettext.h"
  38 #include "support/lstrings.h"
  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)
  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 mi.base.inPixels(crskip_);
 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                         // the 'false' is to make sure that the cell is tall enough
 401                         cell(i).metrics(mi, dimc, false);
 402                 }
 403         }
 404
 405         BufferView & bv = *mi.base.bv;
 406
 407         // compute absolute sizes of vertical structure
 408         for (row_type row = 0; row < nrows(); ++row) {
 409                 int asc  = 0;
 410                 int desc = 0;
 411                 for (col_type col = 0; col < ncols(); ++col) {
 412                         idx_type const i = index(row, col);
 413                         if (cellinfo_[i].multi_ != CELL_PART_OF_MULTICOLUMN) {
 414                                 Dimension const & dimc = cell(i).dimension(bv);
 415                                 asc  = max(asc,  dimc.asc);
 416                                 desc = max(desc, dimc.des);
 417                         }
 418                 }
 419                 rowinfo_[row].ascent_  = asc;
 420                 rowinfo_[row].descent_ = desc;
 421         }
 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() + colinfo_[0].lines_ * vlinesep();;
 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() + 1;
 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         dim.wid += leftMargin() + rightMargin();
 592 }
 593
 594
 595 int InsetMathGrid::vLineHOffset(col_type col, unsigned int line) const
 596 {
 597         if (col < ncols())
 598                 return leftMargin() + colinfo_[col].offset_
 599                         - (colinfo_[col].lines_ - line - 1) * vlinesep()
 600                         - vlinesep()/2 - colsep()/2;
 601         else {
 602                 LASSERT(col == ncols(), return 0);
 603                 return leftMargin() + colinfo_[col-1].offset_ + colinfo_[col-1].width_
 604                         + line * vlinesep()
 605                         + vlinesep()/2 + colsep()/2;
 606         }
 607 }
 608
 609
 610 int InsetMathGrid::hLineVOffset(row_type row, unsigned int line) const
 611 {
 612         return rowinfo_[row].offset_
 613                 - rowinfo_[row].ascent_
 614                 - line * hlinesep()
 615                 - hlinesep()/2 - rowsep()/2;
 616 }
 617
 618
 619 void InsetMathGrid::draw(PainterInfo & pi, int x, int y) const
 620 {
 621         BufferView const & bv = *pi.base.bv;
 622
 623         for (idx_type idx = 0; idx < nargs(); ++idx) {
 624                 if (cellinfo_[idx].multi_ != CELL_PART_OF_MULTICOLUMN) {
 625                         cell(idx).draw(pi,
 626                                        x + leftMargin() + cellXOffset(bv, idx),
 627                                        y + cellYOffset(idx));
 628
 629                         row_type r = row(idx);
 630                         int const yy1 = y + hLineVOffset(r, 0);
 631                         int const yy2 = y + hLineVOffset(r + 1, rowinfo_[r + 1].lines_ - 1);
 632                         auto draw_left_borders = [&](col_type c) {
 633                                 for (unsigned int i = 0; i < colinfo_[c].lines_; ++i) {
 634                                         int const xx = x + vLineHOffset(c, i);
 635                                         pi.pain.line(xx, yy1, xx, yy2, Color_foreground);
 636                                 }
 637                         };
 638                         col_type c = col(idx);
 639                         // Draw inner left borders cell-by-cell because of multicolumns
 640                         draw_left_borders(c);
 641                         // Draw the right border (only once)
 642                         if (c == 0)
 643                                 draw_left_borders(ncols());
 644                 }
 645         }
 646
 647         // Draw horizontal borders
 648         for (row_type r = 0; r <= nrows(); ++r) {
 649                 int const xx1 = x + vLineHOffset(0, 0);
 650                 int const xx2 = x + vLineHOffset(ncols(), colinfo_[ncols()].lines_ - 1);
 651                 for (unsigned int i = 0; i < rowinfo_[r].lines_; ++i) {
 652                         int const yy = y + hLineVOffset(r, i);
 653                         pi.pain.line(xx1, yy, xx2, yy, Color_foreground);
 654                 }
 655         }
 656 }
 657
 658
 659 void InsetMathGrid::metricsT(TextMetricsInfo const & mi, Dimension & dim) const
 660 {
 661         // let the cells adjust themselves
 662         for (idx_type i = 0; i < nargs(); ++i)
 663                 if (cellinfo_[i].multi_ != CELL_PART_OF_MULTICOLUMN)
 664                         cell(i).metricsT(mi, dim);
 665
 666         // compute absolute sizes of vertical structure
 667         for (row_type row = 0; row < nrows(); ++row) {
 668                 int asc  = 0;
 669                 int desc = 0;
 670                 for (col_type col = 0; col < ncols(); ++col) {
 671                         idx_type const i = index(row, col);
 672                         if (cellinfo_[i].multi_ != CELL_PART_OF_MULTICOLUMN) {
 673                                 //MathData const & c = cell(i);
 674                                 // FIXME: BROKEN!
 675                                 Dimension dimc;
 676                                 asc  = max(asc,  dimc.ascent());
 677                                 desc = max(desc, dimc.descent());
 678                         }
 679                 }
 680                 rowinfo_[row].ascent_  = asc;
 681                 rowinfo_[row].descent_ = desc;
 682         }
 683         rowinfo_[nrows()].ascent_  = 0;
 684         rowinfo_[nrows()].descent_ = 0;
 685
 686         // compute vertical offsets
 687         rowinfo_[0].offset_ = 0;
 688         for (row_type row = 1; row <= nrows(); ++row) {
 689                 rowinfo_[row].offset_  =
 690                         rowinfo_[row - 1].offset_  +
 691                         rowinfo_[row - 1].descent_ +
 692                         //rowinfo_[row - 1].skipPixels(mi) +
 693                         1 + //rowsep() +
 694                         //rowinfo_[row].lines_ * hlinesep() +
 695                         rowinfo_[row].ascent_;
 696         }
 697
 698         // adjust vertical offset
 699         int h = 0;
 700         switch (v_align_) {
 701                 case 't':
 702                         h = 0;
 703                         break;
 704                 case 'b':
 705                         h = rowinfo_[nrows() - 1].offset_;
 706                         break;
 707                 default:
 708                         h = rowinfo_[nrows() - 1].offset_ / 2;
 709         }
 710         for (row_type row = 0; row <= nrows(); ++row)
 711                 rowinfo_[row].offset_ -= h;
 712
 713
 714         // compute absolute sizes of horizontal structure
 715         for (col_type col = 0; col < ncols(); ++col) {
 716                 int wid = 0;
 717                 for (row_type row = 0; row < nrows(); ++row) {
 718                         // FIXME: BROKEN!
 719                         //idx_type const i = index(row, col);
 720                         //if (cellinfo_[i].multi_ != CELL_PART_OF_MULTICOLUMN)
 721                         //      wid = max(wid, cell(i).width());
 722                 }
 723                 colinfo_[col].width_ = wid;
 724         }
 725         colinfo_[ncols()].width_  = 0;
 726
 727         // compute horizontal offsets
 728         colinfo_[0].offset_ = border();
 729         for (col_type col = 1; col <= ncols(); ++col) {
 730                 colinfo_[col].offset_ =
 731                         colinfo_[col - 1].offset_ +
 732                         colinfo_[col - 1].width_ +
 733                         displayColSpace(col - 1) +
 734                         1 ; //colsep() +
 735                         //colinfo_[col].lines_ * vlinesep();
 736         }
 737
 738
 739         dim.wid  =  colinfo_[ncols() - 1].offset_
 740                        + colinfo_[ncols() - 1].width_
 741                  //+ vlinesep() * colinfo_[ncols()].lines_
 742                        + 2;
 743
 744         dim.asc  = -rowinfo_[0].offset_
 745                        + rowinfo_[0].ascent_
 746                  //+ hlinesep() * rowinfo_[0].lines_
 747                        + 1;
 748
 749         dim.des  =  rowinfo_[nrows() - 1].offset_
 750                        + rowinfo_[nrows() - 1].descent_
 751                  //+ hlinesep() * rowinfo_[nrows()].lines_
 752                        + 1;
 753 }
 754
 755
 756 void InsetMathGrid::drawT(TextPainter & /*pain*/, int /*x*/, int /*y*/) const
 757 {
 758 //      for (idx_type idx = 0; idx < nargs(); ++idx)
 759 //              if (cellinfo_[idx].multi_ != CELL_PART_OF_MULTICOLUMN)
 760 //                      cell(idx).drawT(pain, x + cellXOffset(idx), y + cellYOffset(idx));
 761 }
 762
 763
 764 void InsetMathGrid::updateBuffer(ParIterator const & it, UpdateType utype)
 765 {
 766         // pass down
 767         for (idx_type idx = 0; idx < nargs(); ++idx)
 768                 if (cellinfo_[idx].multi_ != CELL_PART_OF_MULTICOLUMN)
 769                         cell(idx).updateBuffer(it, utype);
 770 }
 771
 772
 773 docstring InsetMathGrid::eolString(row_type row, bool fragile,
 774                 bool /*latex*/, bool last_eoln) const
 775 {
 776         docstring eol;
 777
 778         if (!rowinfo_[row].crskip_.zero())
 779                 eol += '[' + from_utf8(rowinfo_[row].crskip_.asLatexString()) + ']';
 780         else if(!rowinfo_[row].allow_newpage_)
 781                 eol += '*';
 782
 783         // make sure an upcoming '[' does not break anything
 784         if (row + 1 < nrows()) {
 785                 MathData const & c = cell(index(row + 1, 0));
 786                 if (!c.empty() && c.front()->getChar() == '[')
 787                         //eol += "[0pt]";
 788                         eol += "{}";
 789         }
 790
 791         // only add \\ if necessary
 792         if (eol.empty() && row + 1 == nrows() && (nrows() == 1 || !last_eoln))
 793                 return docstring();
 794
 795         return (fragile ? "\\protect\\\\" : "\\\\") + eol;
 796 }
 797
 798
 799 docstring InsetMathGrid::eocString(col_type col, col_type lastcol) const
 800 {
 801         if (col + 1 == lastcol)
 802                 return docstring();
 803         return from_ascii(" & ");
 804 }
 805
 806
 807 void InsetMathGrid::addRow(row_type row)
 808 {
 809         rowinfo_.insert(rowinfo_.begin() + row + 1, RowInfo());
 810         cells_.insert
 811                 (cells_.begin() + (row + 1) * ncols(), ncols(), MathData());
 812         cellinfo_.insert
 813                 (cellinfo_.begin() + (row + 1) * ncols(), ncols(), CellInfo());
 814 }
 815
 816
 817 void InsetMathGrid::delRow(row_type row)
 818 {
 819         if (nrows() == 1)
 820                 return;
 821
 822         cells_type::iterator it = cells_.begin() + row * ncols();
 823         cells_.erase(it, it + ncols());
 824
 825         vector<CellInfo>::iterator jt = cellinfo_.begin() + row * ncols();
 826         cellinfo_.erase(jt, jt + ncols());
 827
 828         rowinfo_.erase(rowinfo_.begin() + row);
 829 }
 830
 831
 832 void InsetMathGrid::copyRow(row_type row)
 833 {
 834         addRow(row);
 835         for (col_type col = 0; col < ncols(); ++col)
 836                 cells_[(row + 1) * ncols() + col] = cells_[row * ncols() + col];
 837 }
 838
 839
 840 void InsetMathGrid::swapRow(row_type row)
 841 {
 842         if (nrows() == 1)
 843                 return;
 844         if (row + 1 == nrows())
 845                 --row;
 846         for (col_type col = 0; col < ncols(); ++col)
 847                 swap(cells_[row * ncols() + col], cells_[(row + 1) * ncols() + col]);
 848 }
 849
 850
 851 void InsetMathGrid::addCol(col_type newcol)
 852 {
 853         const col_type nc = ncols();
 854         const row_type nr = nrows();
 855         cells_type new_cells((nc + 1) * nr);
 856         vector<CellInfo> new_cellinfo((nc + 1) * nr);
 857
 858         for (row_type row = 0; row < nr; ++row)
 859                 for (col_type col = 0; col < nc; ++col) {
 860                         new_cells[row * (nc + 1) + col + (col >= newcol)]
 861                                 = cells_[row * nc + col];
 862                         new_cellinfo[row * (nc + 1) + col + (col >= newcol)]
 863                                 = cellinfo_[row * nc + col];
 864                 }
 865         swap(cells_, new_cells);
 866         swap(cellinfo_, new_cellinfo);
 867
 868         ColInfo inf;
 869         inf.skip_  = defaultColSpace(newcol);
 870         inf.align_ = defaultColAlign(newcol);
 871         colinfo_.insert(colinfo_.begin() + newcol, inf);
 872 }
 873
 874
 875 void InsetMathGrid::delCol(col_type col)
 876 {
 877         if (ncols() == 1)
 878                 return;
 879
 880         cells_type tmpcells;
 881         vector<CellInfo> tmpcellinfo;
 882         for (col_type i = 0; i < nargs(); ++i)
 883                 if (i % ncols() != col) {
 884                         tmpcells.push_back(cells_[i]);
 885                         tmpcellinfo.push_back(cellinfo_[i]);
 886                 }
 887         swap(cells_, tmpcells);
 888         swap(cellinfo_, tmpcellinfo);
 889
 890         colinfo_.erase(colinfo_.begin() + col);
 891 }
 892
 893
 894 void InsetMathGrid::copyCol(col_type col)
 895 {
 896         addCol(col+1);
 897         for (row_type row = 0; row < nrows(); ++row)
 898                 cells_[row * ncols() + col + 1] = cells_[row * ncols() + col];
 899 }
 900
 901
 902 void InsetMathGrid::swapCol(col_type col)
 903 {
 904         if (ncols() == 1)
 905                 return;
 906         if (col + 1 == ncols())
 907                 --col;
 908         for (row_type row = 0; row < nrows(); ++row)
 909                 swap(cells_[row * ncols() + col], cells_[row * ncols() + col + 1]);
 910 }
 911
 912
 913 int InsetMathGrid::cellXOffset(BufferView const & bv, idx_type idx) const
 914 {
 915         if (cellinfo_[idx].multi_ == CELL_PART_OF_MULTICOLUMN)
 916                 return 0;
 917         col_type c = col(idx);
 918         int x = colinfo_[c].offset_;
 919         char align = displayColAlign(idx);
 920         Dimension const & celldim = cell(idx).dimension(bv);
 921         if (align == 'r' || align == 'R')
 922                 x += cellWidth(idx) - celldim.wid;
 923         if (align == 'c' || align == 'C')
 924                 x += (cellWidth(idx) - celldim.wid) / 2;
 925         return x;
 926 }
 927
 928
 929 int InsetMathGrid::cellYOffset(idx_type idx) const
 930 {
 931         return rowinfo_[row(idx)].offset_;
 932 }
 933
 934
 935 int InsetMathGrid::cellWidth(idx_type idx) const
 936 {
 937         switch (cellinfo_[idx].multi_) {
 938         case CELL_NORMAL:
 939                 return colinfo_[col(idx)].width_;
 940         case CELL_BEGIN_OF_MULTICOLUMN: {
 941                 col_type c1 = col(idx);
 942                 col_type c2 = c1 + ncellcols(idx);
 943                 return colinfo_[c2].offset_
 944                         - colinfo_[c1].offset_
 945                         - displayColSpace(c2)
 946                         - colsep()
 947                         - colinfo_[c2].lines_ * vlinesep();
 948         }
 949         case CELL_PART_OF_MULTICOLUMN:
 950                 return 0;
 951         }
 952         return 0;
 953 }
 954
 955
 956 bool InsetMathGrid::idxUpDown(Cursor & cur, bool up) const
 957 {
 958         if (up) {
 959                 if (cur.row() == 0)
 960                         return false;
 961                 cur.idx() -= ncols();
 962         } else {
 963                 if (cur.row() + 1 >= nrows())
 964                         return false;
 965                 cur.idx() += ncols();
 966         }
 967         // If we are in a multicolumn cell, move to the "real" cell
 968         while (cellinfo_[cur.idx()].multi_ == CELL_PART_OF_MULTICOLUMN) {
 969                 LASSERT(cur.idx() > 0, return false);
 970                 --cur.idx();
 971         }
 972         cur.pos() = cur.cell().x2pos(&cur.bv(), cur.x_target() - cur.cell().xo(cur.bv()));
 973         return true;
 974 }
 975
 976
 977 bool InsetMathGrid::idxBackward(Cursor & cur) const
 978 {
 979         // leave matrix if at the front edge
 980         if (cur.col() == 0)
 981                 return false;
 982         --cur.idx();
 983         // If we are in a multicolumn cell, move to the "real" cell
 984         while (cellinfo_[cur.idx()].multi_ == CELL_PART_OF_MULTICOLUMN) {
 985                 LASSERT(cur.idx() > 0, return false);
 986                 --cur.idx();
 987         }
 988         cur.pos() = cur.lastpos();
 989         return true;
 990 }
 991
 992
 993 bool InsetMathGrid::idxForward(Cursor & cur) const
 994 {
 995         // leave matrix if at the back edge
 996         if (cur.col() + 1 == ncols())
 997                 return false;
 998         ++cur.idx();
 999         // If we are in a multicolumn cell, move to the next cell
1000         while (cellinfo_[cur.idx()].multi_ == CELL_PART_OF_MULTICOLUMN) {
1001                 // leave matrix if at the back edge
1002                 if (cur.col() + 1 == ncols())
1003                         return false;
1004                 ++cur.idx();
1005         }
1006         cur.pos() = 0;
1007         return true;
1008 }
1009
1010
1011 idx_type InsetMathGrid::firstIdx() const
1012 {
1013         size_type idx = 0;
1014         switch (v_align_) {
1015                 case 't':
1016                         //idx = 0;
1017                         break;
1018                 case 'b':
1019                         idx = (nrows() - 1) * ncols();
1020                         break;
1021                 default:
1022                         idx = ((nrows() - 1) / 2) * ncols();
1023         }
1024         // If we are in a multicolumn cell, move to the "real" cell
1025         while (cellinfo_[idx].multi_ == CELL_PART_OF_MULTICOLUMN) {
1026                 LASSERT(idx > 0, return 0);
1027                 --idx;
1028         }
1029         return idx;
1030 }
1031
1032
1033 idx_type InsetMathGrid::lastIdx() const
1034 {
1035         size_type idx = 0;
1036         switch (v_align_) {
1037                 case 't':
1038                         idx = ncols() - 1;
1039                         break;
1040                 case 'b':
1041                         idx = nargs() - 1;
1042                         break;
1043                 default:
1044                         idx = ((nrows() - 1) / 2 + 1) * ncols() - 1;
1045         }
1046         // If we are in a multicolumn cell, move to the "real" cell
1047         while (cellinfo_[idx].multi_ == CELL_PART_OF_MULTICOLUMN) {
1048                 LASSERT(idx > 0, return false);
1049                 --idx;
1050         }
1051         return idx;
1052 }
1053
1054
1055 bool InsetMathGrid::idxDelete(idx_type & idx)
1056 {
1057         // nothing to do if we have just one row
1058         if (nrows() == 1)
1059                 return false;
1060
1061         // nothing to do if we are in the middle of the last row of the inset
1062         if (idx + ncols() > nargs())
1063                 return false;
1064
1065         // try to delete entire sequence of ncols() empty cells if possible
1066         for (idx_type i = idx; i < idx + ncols(); ++i)
1067                 if (!cell(i).empty())
1068                         return false;
1069
1070         // move cells if necessary
1071         for (idx_type i = index(row(idx), 0); i < idx; ++i)
1072                 swap(cell(i), cell(i + ncols()));
1073
1074         delRow(row(idx));
1075
1076         if (idx >= nargs())
1077                 idx = nargs() - 1;
1078
1079         // undo effect of Ctrl-Tab (i.e. pull next cell)
1080         //if (idx + 1 != nargs())
1081         //      cell(idx).swap(cell(idx + 1));
1082
1083         // we handled the event..
1084         return true;
1085 }
1086
1087
1088 // reimplement old behaviour when pressing Delete in the last position
1089 // of a cell
1090 void InsetMathGrid::idxGlue(idx_type idx)
1091 {
1092         col_type c = col(idx);
1093         if (c + 1 == ncols()) {
1094                 if (row(idx) + 1 != nrows()) {
1095                         for (col_type cc = 0; cc < ncols(); ++cc)
1096                                 cell(idx).append(cell(idx + cc + 1));
1097                         delRow(row(idx) + 1);
1098                 }
1099         } else {
1100                 idx_type idx_next = idx + 1;
1101                 while (idx_next < nargs() &&
1102                        cellinfo_[idx_next].multi_ == CELL_PART_OF_MULTICOLUMN)
1103                         ++idx_next;
1104                 if (idx_next < nargs())
1105                         cell(idx).append(cell(idx_next));
1106                 col_type oldcol = c + 1;
1107                 for (col_type cc = c + 2; cc < ncols(); ++cc)
1108                         cell(idx - oldcol + cc) = cell(idx - oldcol + 1 + cc);
1109                 cell(idx - c + ncols() - 1).clear();
1110         }
1111 }
1112
1113
1114 InsetMathGrid::RowInfo const & InsetMathGrid::rowinfo(row_type row) const
1115 {
1116         return rowinfo_[row];
1117 }
1118
1119
1120 InsetMathGrid::RowInfo & InsetMathGrid::rowinfo(row_type row)
1121 {
1122         return rowinfo_[row];
1123 }
1124
1125
1126 bool InsetMathGrid::idxBetween(idx_type idx, idx_type from, idx_type to) const
1127 {
1128         row_type const ri = row(idx);
1129         row_type const r1 = min(row(from), row(to));
1130         row_type const r2 = max(row(from), row(to));
1131         col_type const ci = col(idx);
1132         col_type const c1 = min(col(from), col(to));
1133         col_type const c2 = max(col(from), col(to));
1134         return r1 <= ri && ri <= r2 && c1 <= ci && ci <= c2;
1135 }
1136
1137
1138 void InsetMathGrid::normalize(NormalStream & os) const
1139 {
1140         os << "[grid ";
1141         for (row_type row = 0; row < nrows(); ++row) {
1142                 os << "[row ";
1143                 for (col_type col = 0; col < ncols(); ++col) {
1144                         idx_type const i = index(row, col);
1145                         switch (cellinfo_[i].multi_) {
1146                         case CELL_NORMAL:
1147                                 os << "[cell " << cell(i) << ']';
1148                                 break;
1149                         case CELL_BEGIN_OF_MULTICOLUMN:
1150                                 os << "[cell colspan="
1151                                    << static_cast<int>(ncellcols(i)) << ' '
1152                                    << cell(i) << ']';
1153                                 break;
1154                         case CELL_PART_OF_MULTICOLUMN:
1155                                 break;
1156                         }
1157                 }
1158                 os << ']';
1159         }
1160         os << ']';
1161 }
1162
1163
1164 void InsetMathGrid::mathmlize(MathStream & os) const
1165 {
1166         bool const havetable = nrows() > 1 || ncols() > 1;
1167         if (havetable)
1168                 os << MTag("mtable");
1169         char const * const celltag = havetable ? "mtd" : "mrow";
1170         for (row_type row = 0; row < nrows(); ++row) {
1171                 if (havetable)
1172                         os << MTag("mtr");
1173                 for (col_type col = 0; col < ncols(); ++col) {
1174                         idx_type const i = index(row, col);
1175                         if (cellinfo_[i].multi_ != CELL_PART_OF_MULTICOLUMN) {
1176                                 col_type const cellcols = ncellcols(i);
1177                                 ostringstream attr;
1178                                 if (havetable && cellcols > 1)
1179                                         attr << "colspan='" << cellcols << '\'';
1180                                 os << MTag(celltag, attr.str());
1181                                 os << cell(index(row, col));
1182                                 os << ETag(celltag);
1183                         }
1184                 }
1185                 if (havetable)
1186                         os << ETag("mtr");
1187         }
1188         if (havetable)
1189                 os << ETag("mtable");
1190 }
1191
1192
1193 // FIXME XHTML
1194 // We need to do something about alignment here.
1195 void InsetMathGrid::htmlize(HtmlStream & os, string attrib) const
1196 {
1197         bool const havetable = nrows() > 1 || ncols() > 1;
1198         if (!havetable) {
1199                 os << cell(index(0, 0));
1200                 return;
1201         }
1202         os << MTag("table", attrib);
1203         for (row_type row = 0; row < nrows(); ++row) {
1204                 os << MTag("tr");
1205                 for (col_type col = 0; col < ncols(); ++col) {
1206                         idx_type const i = index(row, col);
1207                         if (cellinfo_[i].multi_ != CELL_PART_OF_MULTICOLUMN) {
1208                                 col_type const cellcols = ncellcols(i);
1209                                 ostringstream attr;
1210                                 if (cellcols > 1)
1211                                         attr << "colspan='" << cellcols << '\'';
1212                                 os << MTag("td", attr.str());
1213                                 os << cell(index(row, col));
1214                                 os << ETag("td");
1215                         }
1216                 }
1217                 os << ETag("tr");
1218         }
1219         os << ETag("table");
1220 }
1221
1222
1223 void InsetMathGrid::htmlize(HtmlStream & os) const
1224 {
1225         htmlize(os, "class='mathtable'");
1226 }
1227
1228
1229 void InsetMathGrid::validate(LaTeXFeatures & features) const
1230 {
1231         if (features.runparams().math_flavor == OutputParams::MathAsHTML
1232             && (nrows() > 1 || ncols() > 1)) {
1233                 // CSS taken from InsetMathCases
1234                 features.addCSSSnippet(
1235                         "table.mathtable{display: inline-block; text-align: center; border: none;"
1236                         "border-left: thin solid black; vertical-align: middle; padding-left: 0.5ex;}\n"
1237                         "table.mathtable td {text-align: left; border: none;}");
1238         }
1239         InsetMathNest::validate(features);
1240 }
1241
1242
1243 void InsetMathGrid::write(WriteStream & os) const
1244 {
1245         write(os, 0, 0, nrows(), ncols());
1246 }
1247
1248 void InsetMathGrid::write(WriteStream & os,
1249                           row_type beg_row, col_type beg_col,
1250                           row_type end_row, col_type end_col) const
1251 {
1252         MathEnsurer ensurer(os, false);
1253         docstring eol;
1254         for (row_type row = beg_row; row < end_row; ++row) {
1255                 os << verboseHLine(rowinfo_[row].lines_);
1256                 // don't write & and empty cells at end of line,
1257                 // unless there are vertical lines
1258                 col_type lastcol = 0;
1259                 bool emptyline = true;
1260                 bool last_eoln = true;
1261                 for (col_type col = beg_col; col < end_col; ++col) {
1262                         idx_type const idx = index(row, col);
1263                         bool const empty_cell = cell(idx).empty();
1264                         if (!empty_cell || cellinfo_[idx].multi_ != CELL_NORMAL)
1265                                 last_eoln = false;
1266                         if (!empty_cell || cellinfo_[idx].multi_ != CELL_NORMAL ||
1267                             colinfo_[col + 1].lines_) {
1268                                 lastcol = col + 1;
1269                                 emptyline = false;
1270                         }
1271                 }
1272                 for (col_type col = beg_col; col < end_col;) {
1273                         int nccols = 1;
1274                         idx_type const idx = index(row, col);
1275                         TexRow::RowEntry entry = TexRow::mathEntry(id(),idx);
1276                         os.texrow().start(entry);
1277                         if (col >= lastcol) {
1278                                 ++col;
1279                                 continue;
1280                         }
1281                         Changer dummy = os.changeRowEntry(entry);
1282                         if (cellinfo_[idx].multi_ == CELL_BEGIN_OF_MULTICOLUMN) {
1283                                 size_t s = col + 1;
1284                                 while (s < ncols() &&
1285                                        cellinfo_[index(row, s)].multi_ == CELL_PART_OF_MULTICOLUMN)
1286                                         s++;
1287                                 nccols = s - col;
1288                                 os << "\\multicolumn{" << nccols
1289                                    << "}{" << cellinfo_[idx].align_
1290                                    << "}{";
1291                         }
1292                         os << cell(idx);
1293                         if (os.pendingBrace())
1294                                 ModeSpecifier specifier(os, TEXT_MODE);
1295                         if (cellinfo_[idx].multi_ == CELL_BEGIN_OF_MULTICOLUMN)
1296                                 os << '}';
1297                         os << eocString(col + nccols - 1, lastcol);
1298                         col += nccols;
1299                 }
1300                 eol = eolString(row, os.fragile(), os.latex(), last_eoln);
1301                 os << eol;
1302                 // append newline only if line wasn't completely empty
1303                 // and the formula is not written on a single line
1304                 bool const empty = emptyline && eol.empty();
1305                 if (!empty && nrows() > 1)
1306                         os << "\n";
1307         }
1308         // @TODO use end_row instead of nrows() ?
1309         docstring const s = verboseHLine(rowinfo_[nrows()].lines_);
1310         if (!s.empty()) {
1311                 if (eol.empty()) {
1312                         if (os.fragile())
1313                                 os << "\\protect";
1314                         os << "\\\\";
1315                 }
1316                 os << s;
1317         }
1318 }
1319
1320
1321 int InsetMathGrid::colsep() const
1322 {
1323         return 6;
1324 }
1325
1326
1327 int InsetMathGrid::rowsep() const
1328 {
1329         return 6;
1330 }
1331
1332
1333 int InsetMathGrid::hlinesep() const
1334 {
1335         return 3;
1336 }
1337
1338
1339 int InsetMathGrid::vlinesep() const
1340 {
1341         return 3;
1342 }
1343
1344
1345 int InsetMathGrid::border() const
1346 {
1347         return 1;
1348 }
1349
1350
1351 void InsetMathGrid::splitCell(Cursor & cur)
1352 {
1353         if (cur.idx() == cur.lastidx())
1354                 return;
1355         MathData ar = cur.cell();
1356         ar.erase(0, cur.pos());
1357         cur.cell().erase(cur.pos(), cur.lastpos());
1358         ++cur.idx();
1359         while (cur.idx() << nargs() &&
1360                cellinfo_[cur.idx()].multi_ == CELL_BEGIN_OF_MULTICOLUMN)
1361                 ++cur.idx();
1362         cur.pos() = 0;
1363         cur.cell().insert(0, ar);
1364 }
1365
1366
1367 char InsetMathGrid::displayColAlign(idx_type idx) const
1368 {
1369         if (cellinfo_[idx].multi_ == CELL_BEGIN_OF_MULTICOLUMN) {
1370                 // align_ may also contain lines like "||r|", so this is
1371                 // not complete, but we catch at least the simple cases.
1372                 if (cellinfo_[idx].align_ == "c")
1373                         return 'c';
1374                 if (cellinfo_[idx].align_ == "l")
1375                         return 'l';
1376                 if (cellinfo_[idx].align_ == "r")
1377                         return 'r';
1378         }
1379         return colinfo_[col(idx)].align_;
1380 }
1381
1382
1383 int InsetMathGrid::displayColSpace(col_type col) const
1384 {
1385         return colinfo_[col].skip_;
1386 }
1387
1388 void InsetMathGrid::doDispatch(Cursor & cur, FuncRequest & cmd)
1389 {
1390         //lyxerr << "*** InsetMathGrid: request: " << cmd << endl;
1391
1392         Parse::flags parseflg = Parse::QUIET | Parse::USETEXT;
1393
1394         FuncCode const act = cmd.action();
1395         switch (act) {
1396
1397         // insert file functions
1398         case LFUN_LINE_DELETE_FORWARD:
1399                 cur.recordUndoInset();
1400                 //autocorrect_ = false;
1401                 //macroModeClose();
1402                 //if (selection_) {
1403                 //      selDel();
1404                 //      break;
1405                 //}
1406                 if (nrows() > 1)
1407                         delRow(cur.row());
1408                 if (cur.idx() > cur.lastidx())
1409                         cur.idx() = cur.lastidx();
1410                 if (cur.pos() > cur.lastpos())
1411                         cur.pos() = cur.lastpos();
1412                 break;
1413
1414         case LFUN_CELL_SPLIT:
1415                 cur.recordUndo();
1416                 splitCell(cur);
1417                 break;
1418
1419         case LFUN_CELL_BACKWARD:
1420                 // See below.
1421                 cur.selection(false);
1422                 if (!idxPrev(cur)) {
1423                         cmd = FuncRequest(LFUN_FINISHED_BACKWARD);
1424                         cur.undispatched();
1425                 }
1426                 break;
1427
1428         case LFUN_CELL_FORWARD:
1429                 // Can't handle selection by additional 'shift' as this is
1430                 // hard bound to LFUN_CELL_BACKWARD
1431                 cur.selection(false);
1432                 if (!idxNext(cur)) {
1433                         cmd = FuncRequest(LFUN_FINISHED_FORWARD);
1434                         cur.undispatched();
1435                 }
1436                 break;
1437
1438         case LFUN_NEWLINE_INSERT: {
1439                 cur.recordUndoInset();
1440                 row_type const r = cur.row();
1441                 addRow(r);
1442
1443                 // split line
1444                 for (col_type c = col(cur.idx()) + 1; c < ncols(); ++c)
1445                         swap(cell(index(r, c)), cell(index(r + 1, c)));
1446
1447                 // split cell
1448                 splitCell(cur);
1449                 if (ncols() > 1)
1450                         swap(cell(cur.idx()), cell(cur.idx() + ncols() - 1));
1451                 if (cur.idx() > 0)
1452                         --cur.idx();
1453                 cur.pos() = cur.lastpos();
1454                 cur.forceBufferUpdate();
1455                 //mathcursor->normalize();
1456                 //cmd = FuncRequest(LFUN_FINISHED_BACKWARD);
1457                 break;
1458         }
1459
1460         case LFUN_TABULAR_FEATURE: {
1461                 cur.recordUndoInset();
1462                 //lyxerr << "handling tabular-feature " << to_utf8(cmd.argument()) << endl;
1463                 istringstream is(to_utf8(cmd.argument()));
1464                 string s;
1465                 is >> s;
1466                 if (s == "valign-top")
1467                         setVerticalAlignment('t');
1468                 else if (s == "valign-middle")
1469                         setVerticalAlignment('c');
1470                 else if (s == "valign-bottom")
1471                         setVerticalAlignment('b');
1472                 else if (s == "align-left")
1473                         setHorizontalAlignment('l', cur.col());
1474                 else if (s == "align-right")
1475                         setHorizontalAlignment('r', cur.col());
1476                 else if (s == "align-center")
1477                         setHorizontalAlignment('c', cur.col());
1478                 else if (s == "append-row")
1479                         for (int i = 0, n = extractInt(is); i < n; ++i)
1480                                 addRow(cur.row());
1481                 else if (s == "delete-row") {
1482                         cur.clearSelection(); // bug 4323
1483                         for (int i = 0, n = extractInt(is); i < n; ++i) {
1484                                 delRow(cur.row());
1485                                 if (cur.idx() >= nargs())
1486                                         cur.idx() -= ncols();
1487                         }
1488                         cur.pos() = 0; // trick, see below
1489                 }
1490                 else if (s == "copy-row") {
1491                         // Here (as later) we save the cursor col/row
1492                         // in order to restore it after operation.
1493                         row_type const r = cur.row();
1494                         col_type const c = cur.col();
1495                         for (int i = 0, n = extractInt(is); i < n; ++i)
1496                                 copyRow(cur.row());
1497                         cur.idx() = index(r, c);
1498                 }
1499                 else if (s == "swap-row") {
1500                         swapRow(cur.row());
1501                         // Trick to suppress same-idx-means-different-cell
1502                         // assertion crash:
1503                         cur.pos() = 0;
1504                 }
1505                 else if (s == "add-hline-above")
1506                         rowinfo_[cur.row()].lines_++;
1507                 else if (s == "add-hline-below")
1508                         rowinfo_[cur.row()+1].lines_++;
1509                 else if (s == "delete-hline-above")
1510                         rowinfo_[cur.row()].lines_--;
1511                 else if (s == "delete-hline-below")
1512                         rowinfo_[cur.row()+1].lines_--;
1513                 else if (s == "append-column") {
1514                         row_type const r = cur.row();
1515                         col_type const c = cur.col();
1516                         for (int i = 0, n = extractInt(is); i < n; ++i)
1517                                 addCol(cur.col() + 1);
1518                         cur.idx() = index(r, c);
1519                 }
1520                 else if (s == "delete-column") {
1521                         cur.clearSelection(); // bug 4323
1522                         row_type const r = cur.row();
1523                         col_type const c = cur.col();
1524                         for (int i = 0, n = extractInt(is); i < n; ++i)
1525                                 delCol(col(cur.idx()));
1526                         cur.idx() = index(r, min(c, cur.ncols() - 1));
1527                         cur.pos() = 0; // trick, see above
1528                 }
1529                 else if (s == "copy-column") {
1530                         row_type const r = cur.row();
1531                         col_type const c = cur.col();
1532                         copyCol(cur.col());
1533                         cur.idx() = index(r, c);
1534                 }
1535                 else if (s == "swap-column") {
1536                         swapCol(cur.col());
1537                         cur.pos() = 0; // trick, see above
1538                 }
1539                 else if (s == "add-vline-left") {
1540                         colinfo_[cur.col()].lines_++;
1541                         if (!colinfo_[cur.col()].special_.empty())
1542                                 colinfo_[cur.col()].special_ += '|';
1543                 }
1544                 else if (s == "add-vline-right") {
1545                         colinfo_[cur.col()+1].lines_++;
1546                         if (!colinfo_[cur.col()+1].special_.empty())
1547                                 colinfo_[cur.col()+1].special_.insert(0, 1, '|');
1548                 }
1549                 else if (s == "delete-vline-left") {
1550                         colinfo_[cur.col()].lines_--;
1551                         docstring & special = colinfo_[cur.col()].special_;
1552                         if (!special.empty()) {
1553                                 docstring::size_type i = special.rfind('|');
1554                                 LASSERT(i != docstring::npos, break);
1555                                 special.erase(i, 1);
1556                         }
1557                 }
1558                 else if (s == "delete-vline-right") {
1559                         colinfo_[cur.col()+1].lines_--;
1560                         docstring & special = colinfo_[cur.col()+1].special_;
1561                         if (!special.empty()) {
1562                                 docstring::size_type i = special.find('|');
1563                                 LASSERT(i != docstring::npos, break);
1564                                 special.erase(i, 1);
1565                         }
1566                 }
1567                 else {
1568                         cur.undispatched();
1569                         break;
1570                 }
1571                 // perhaps this should be FINISHED_BACKWARD -- just for clarity?
1572                 //lyxerr << "returning FINISHED_LEFT" << endl;
1573                 break;
1574         }
1575
1576         case LFUN_CLIPBOARD_PASTE:
1577                 parseflg |= Parse::VERBATIM;
1578                 // fall through
1579         case LFUN_PASTE: {
1580                 if (cur.currentMode() != MATH_MODE)
1581                         parseflg |= Parse::TEXTMODE;
1582                 cur.message(_("Paste"));
1583                 cap::replaceSelection(cur);
1584                 docstring topaste;
1585                 if (cmd.argument().empty() && !theClipboard().isInternal())
1586                         topaste = theClipboard().getAsText(frontend::Clipboard::PlainTextType);
1587                 else {
1588                         idocstringstream is(cmd.argument());
1589                         int n = 0;
1590                         is >> n;
1591                         topaste = cap::selection(n, buffer().params().documentClassPtr());
1592                 }
1593                 InsetMathGrid grid(buffer_, 1, 1);
1594                 if (!topaste.empty())
1595                         if ((topaste.size() == 1 && isAscii(topaste))
1596                             || !mathed_parse_normal(grid, topaste, parseflg)) {
1597                                 resetGrid(grid);
1598                                 mathed_parse_normal(grid, topaste, parseflg | Parse::VERBATIM);
1599                         }
1600
1601                 bool hline_enabled = false;
1602                 FuncRequest fr = FuncRequest(LFUN_TABULAR_FEATURE, "add-hline-above");
1603                 FuncStatus status;
1604                 if (getStatus(cur, fr, status))
1605                         hline_enabled = status.enabled();
1606                 if (grid.nargs() == 1) {
1607                         // single cell/part of cell
1608                         cur.recordUndoInset();
1609                         cur.cell().insert(cur.pos(), grid.cell(0));
1610                         cur.pos() += grid.cell(0).size();
1611                         if (hline_enabled)
1612                                 rowinfo_[cur.row()].lines_ += grid.rowinfo_[0].lines_;
1613                         else {
1614                                 for (unsigned int l = 0; l < grid.rowinfo_[0].lines_; ++l) {
1615                                          cur.cell().insert(0,
1616                                                 MathAtom(new InsetMathUnknown(from_ascii("\\hline"))));
1617                                          cur.pos()++;
1618                                 }
1619                         }
1620                 } else {
1621                         // multiple cells
1622                         cur.recordUndoInset();
1623                         col_type const numcols =
1624                                 min(grid.ncols(), ncols() - col(cur.idx()));
1625                         row_type const numrows =
1626                                 min(grid.nrows(), nrows() - cur.row());
1627                         for (row_type r = 0; r < numrows; ++r) {
1628                                 for (col_type c = 0; c < numcols; ++c) {
1629                                         idx_type i = index(r + cur.row(), c + col(cur.idx()));
1630                                         cell(i).insert(0, grid.cell(grid.index(r, c)));
1631                                 }
1632                                 if (hline_enabled)
1633                                         rowinfo_[r].lines_ += grid.rowinfo_[r].lines_;
1634                                 else {
1635                                         for (unsigned int l = 0; l < grid.rowinfo_[r].lines_; ++l) {
1636                                                 idx_type i = index(r + cur.row(), 0);
1637                                                 cell(i).insert(0,
1638                                                         MathAtom(new InsetMathUnknown(from_ascii("\\hline"))));
1639                                         }
1640                                 }
1641                                 // append the left over horizontal cells to the last column
1642                                 idx_type i = index(r + cur.row(), ncols() - 1);
1643                                 for (InsetMath::col_type c = numcols; c < grid.ncols(); ++c)
1644                                         cell(i).append(grid.cell(grid.index(r, c)));
1645                         }
1646                         // append the left over vertical cells to the last _cell_
1647                         idx_type i = nargs() - 1;
1648                         for (row_type r = numrows; r < grid.nrows(); ++r) {
1649                                 for (col_type c = 0; c < grid.ncols(); ++c)
1650                                         cell(i).append(grid.cell(grid.index(r, c)));
1651                                 if (hline_enabled)
1652                                         rowinfo_[r].lines_ += grid.rowinfo_[r].lines_;
1653                                 else {
1654                                         for (unsigned int l = 0; l < grid.rowinfo_[r].lines_; ++l) {
1655                                                 cell(i).insert(0,
1656                                                         MathAtom(new InsetMathUnknown(from_ascii("\\hline"))));
1657                                         }
1658                                 }
1659                         }
1660                 }
1661                 cur.clearSelection(); // bug 393
1662                 // FIXME audit setBuffer calls
1663                 cur.inset().setBuffer(*buffer_);
1664                 cur.forceBufferUpdate();
1665                 cur.finishUndo();
1666                 break;
1667         }
1668
1669         case LFUN_LINE_BEGIN:
1670                 cur.screenUpdateFlags(Update::Decoration | Update::FitCursor);
1671                 // fall through
1672         case LFUN_LINE_BEGIN_SELECT:
1673                 cur.selHandle(act == LFUN_WORD_BACKWARD_SELECT ||
1674                                 act == LFUN_WORD_LEFT_SELECT ||
1675                                 act == LFUN_LINE_BEGIN_SELECT);
1676                 cur.macroModeClose();
1677                 if (cur.pos() != 0) {
1678                         cur.pos() = 0;
1679                 } else if (cur.idx() % cur.ncols() != 0) {
1680                         cur.idx() -= cur.idx() % cur.ncols();
1681                         cur.pos() = 0;
1682                 } else if (cur.idx() != 0) {
1683                         cur.idx() = 0;
1684                         cur.pos() = 0;
1685                 } else {
1686                         cmd = FuncRequest(LFUN_FINISHED_BACKWARD);
1687                         cur.undispatched();
1688                 }
1689                 break;
1690
1691         case LFUN_LINE_END:
1692                 cur.screenUpdateFlags(Update::Decoration | Update::FitCursor);
1693                 // fall through
1694         case LFUN_LINE_END_SELECT:
1695                 cur.selHandle(act == LFUN_WORD_FORWARD_SELECT ||
1696                                 act == LFUN_WORD_RIGHT_SELECT ||
1697                                 act == LFUN_LINE_END_SELECT);
1698                 cur.macroModeClose();
1699                 cur.clearTargetX();
1700                 if (cur.pos() != cur.lastpos()) {
1701                         cur.pos() = cur.lastpos();
1702                 } else if ((cur.idx() + 1) % cur.ncols() != 0) {
1703                         cur.idx() += cur.ncols() - 1 - cur.idx() % cur.ncols();
1704                         cur.pos() = cur.lastpos();
1705                 } else if (cur.idx() != cur.lastidx()) {
1706                         cur.idx() = cur.lastidx();
1707                         cur.pos() = cur.lastpos();
1708                 } else {
1709                         cmd = FuncRequest(LFUN_FINISHED_FORWARD);
1710                         cur.undispatched();
1711                 }
1712                 break;
1713
1714         default:
1715                 InsetMathNest::doDispatch(cur, cmd);
1716         }
1717 }
1718
1719
1720 bool InsetMathGrid::getStatus(Cursor & cur, FuncRequest const & cmd,
1721                 FuncStatus & status) const
1722 {
1723         switch (cmd.action()) {
1724         case LFUN_TABULAR_FEATURE: {
1725                 string s = cmd.getArg(0);
1726                 if (&cur.inset() != this) {
1727                         // Table actions requires that the cursor is _inside_ the
1728                         // table.
1729                         status.setEnabled(false);
1730                         status.message(from_utf8(N_("Cursor not in table")));
1731                         return true;
1732                 }
1733                 if (nrows() <= 1 && (s == "delete-row" || s == "swap-row")) {
1734                         status.setEnabled(false);
1735                         status.message(from_utf8(N_("Only one row")));
1736                         return true;
1737                 }
1738                 if (ncols() <= 1 &&
1739                     (s == "delete-column" || s == "swap-column")) {
1740                         status.setEnabled(false);
1741                         status.message(from_utf8(N_("Only one column")));
1742                         return true;
1743                 }
1744                 if ((rowinfo_[cur.row()].lines_ == 0 &&
1745                      s == "delete-hline-above") ||
1746                     (rowinfo_[cur.row() + 1].lines_ == 0 &&
1747                      s == "delete-hline-below")) {
1748                         status.setEnabled(false);
1749                         status.message(from_utf8(N_("No hline to delete")));
1750                         return true;
1751                 }
1752
1753                 if ((colinfo_[cur.col()].lines_ == 0 &&
1754                      s == "delete-vline-left") ||
1755                     (colinfo_[cur.col() + 1].lines_ == 0 &&
1756                      s == "delete-vline-right")) {
1757                         status.setEnabled(false);
1758                         status.message(from_utf8(N_("No vline to delete")));
1759                         return true;
1760                 }
1761                 if (s == "valign-top" || s == "valign-middle" ||
1762                     s == "valign-bottom" || s == "align-left" ||
1763                     s == "align-right" || s == "align-center") {
1764                         status.setEnabled(true);
1765                         char const ha = horizontalAlignment(cur.col());
1766                         char const va = verticalAlignment();
1767                         status.setOnOff((s == "align-left" && ha == 'l')
1768                                         || (s == "align-right"   && ha == 'r')
1769                                         || (s == "align-center"  && ha == 'c')
1770                                         || (s == "valign-top"    && va == 't')
1771                                         || (s == "valign-bottom" && va == 'b')
1772                                         || (s == "valign-middle" && va == 'c'));
1773                         return true;
1774                 }
1775                 if (s == "append-row" || s == "delete-row" ||
1776                     s == "copy-row" || s == "swap-row" ||
1777                     s == "add-hline-above" || s == "add-hline-below" ||
1778                     s == "delete-hline-above" || s == "delete-hline-below" ||
1779                     s == "append-column" || s == "delete-column" ||
1780                     s == "copy-column" || s == "swap-column" ||
1781                     s == "add-vline-left" || s == "add-vline-right" ||
1782                     s == "delete-vline-left" || s == "delete-vline-right") {
1783                         status.setEnabled(true);
1784                 } else {
1785                         status.setEnabled(false);
1786                         status.message(bformat(
1787                             from_utf8(N_("Unknown tabular feature '%1$s'")),
1788                             from_utf8(s)));
1789                 }
1790
1791 #if 0
1792                 // FIXME: What did this code do?
1793                 // Please check whether it is still needed!
1794                 // should be more precise
1795                 if (v_align_ == '\0') {
1796                         status.enable(true);
1797                         break;
1798                 }
1799                 if (cmd.argument().empty()) {
1800                         status.enable(false);
1801                         break;
1802                 }
1803                 if (!contains("tcb", cmd.argument()[0])) {
1804                         status.enable(false);
1805                         break;
1806                 }
1807                 status.setOnOff(cmd.argument()[0] == v_align_);
1808                 status.setEnabled(true);
1809 #endif
1810                 return true;
1811         }
1812
1813         case LFUN_CELL_SPLIT:
1814                 status.setEnabled(cur.idx() != cur.lastidx());
1815                 return true;
1816
1817         case LFUN_CELL_BACKWARD:
1818         case LFUN_CELL_FORWARD:
1819                 status.setEnabled(true);
1820                 return true;
1821
1822         default:
1823                 break;
1824         }
1825         return InsetMathNest::getStatus(cur, cmd, status);
1826 }
1827
1828
1829 // static
1830 char InsetMathGrid::colAlign(HullType type, col_type col)
1831 {
1832         switch (type) {
1833         case hullEqnArray:
1834                 return "rcl"[col % 3];
1835
1836         case hullMultline:
1837         case hullGather:
1838                 return 'c';
1839
1840         case hullAlign:
1841         case hullAlignAt:
1842         case hullXAlignAt:
1843         case hullXXAlignAt:
1844         case hullFlAlign:
1845                 return "rl"[col & 1];
1846
1847         case hullUnknown:
1848         case hullNone:
1849         case hullSimple:
1850         case hullEquation:
1851         case hullRegexp:
1852                 return 'c';
1853         }
1854         // avoid warning
1855         return 'c';
1856 }
1857
1858
1859 //static
1860 int InsetMathGrid::colSpace(HullType type, col_type col)
1861 {
1862         int alignInterSpace = 0;
1863         switch (type) {
1864         case hullUnknown:
1865         case hullNone:
1866         case hullSimple:
1867         case hullEquation:
1868         case hullMultline:
1869         case hullGather:
1870         case hullRegexp:
1871                 return 0;
1872
1873         case hullEqnArray:
1874                 return 5;
1875
1876         case hullAlign:
1877                 alignInterSpace = 20;
1878                 break;
1879         case hullAlignAt:
1880                 alignInterSpace = 0;
1881                 break;
1882         case hullXAlignAt:
1883                 alignInterSpace = 40;
1884                 break;
1885         case hullXXAlignAt:
1886         case hullFlAlign:
1887                 alignInterSpace = 60;
1888                 break;
1889         }
1890         return (col % 2) ? alignInterSpace : 0;
1891 }
1892
1893
1894 } // namespace lyx