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 crskip_.inPixels(mi.base);
 103 }
 104
 105
 106
 107 //////////////////////////////////////////////////////////////
 108
 109
 110 InsetMathGrid::ColInfo::ColInfo()
 111         : align_('c'), width_(0), offset_(0), lines_(0), skip_(0)
 112 {}
 113
 114
 115 //////////////////////////////////////////////////////////////
 116
 117
 118 InsetMathGrid::InsetMathGrid(Buffer * buf)
 119         : InsetMathNest(buf, 1),
 120           rowinfo_(1 + 1),
 121                 colinfo_(1 + 1),
 122                 cellinfo_(1),
 123                 v_align_('c')
 124 {
 125         setDefaults();
 126 }
 127
 128
 129 InsetMathGrid::InsetMathGrid(Buffer * buf, col_type m, row_type n)
 130         : InsetMathNest(buf, m * n),
 131           rowinfo_(n + 1),
 132                 colinfo_(m + 1),
 133                 cellinfo_(m * n),
 134                 v_align_('c')
 135 {
 136         setDefaults();
 137 }
 138
 139
 140 InsetMathGrid::InsetMathGrid(Buffer * buf, col_type m, row_type n, char v,
 141         docstring const & h)
 142         : InsetMathNest(buf, m * n),
 143           rowinfo_(n + 1),
 144           colinfo_(m + 1),
 145                 cellinfo_(m * n),
 146                 v_align_(v)
 147 {
 148         setDefaults();
 149         setVerticalAlignment(v);
 150         setHorizontalAlignments(h);
 151 }
 152
 153
 154 Inset * InsetMathGrid::clone() const
 155 {
 156         return new InsetMathGrid(*this);
 157 }
 158
 159
 160 InsetMath::idx_type InsetMathGrid::index(row_type row, col_type col) const
 161 {
 162         return col + ncols() * row;
 163 }
 164
 165
 166 void InsetMathGrid::setDefaults()
 167 {
 168         if (ncols() <= 0)
 169                 lyxerr << "positive number of columns expected" << endl;
 170         //if (nrows() <= 0)
 171         //      lyxerr << "positive number of rows expected" << endl;
 172         for (col_type col = 0; col < ncols(); ++col) {
 173                 colinfo_[col].align_ = defaultColAlign(col);
 174                 colinfo_[col].skip_  = defaultColSpace(col);
 175                 colinfo_[col].special_.clear();
 176         }
 177         for (idx_type idx = 0; idx < nargs(); ++idx)
 178                 cellinfo_[idx].multi_ = CELL_NORMAL;
 179 }
 180
 181
 182 bool InsetMathGrid::interpretString(Cursor & cur, docstring const & str)
 183 {
 184         if (str == "\\hline") {
 185                 FuncRequest fr = FuncRequest(LFUN_TABULAR_FEATURE, "add-hline-above");
 186                 FuncStatus status;
 187                 if (getStatus(cur, fr, status)) {
 188                         if (status.enabled()) {
 189                                 rowinfo_[cur.row()].lines_++;
 190                                 return true;
 191                         }
 192                 }
 193         }
 194         return InsetMathNest::interpretString(cur, str);
 195 }
 196
 197
 198 void InsetMathGrid::setHorizontalAlignments(docstring const & hh)
 199 {
 200         col_type col = 0;
 201         for (docstring::const_iterator it = hh.begin(); it != hh.end(); ++it) {
 202                 char_type c = *it;
 203                 if (c == '|') {
 204                         colinfo_[col].lines_++;
 205                 } else if ((c == 'p' || c == 'm' || c == 'b'||
 206                             c == '!' || c == '@' || c == '>' || c == '<') &&
 207                            it + 1 != hh.end() && *(it + 1) == '{') {
 208                         // @{decl.} and p{width} are standard LaTeX, the
 209                         // others are extensions by array.sty
 210                         bool const newcolumn = c == 'p' || c == 'm' || c == 'b';
 211                         if (newcolumn) {
 212                                 // this declares a new column
 213                                 if (col >= ncols())
 214                                         // Only intercolumn stuff is allowed
 215                                         // in the last dummy column
 216                                         break;
 217                                 colinfo_[col].align_ = 'l';
 218                         } else {
 219                                 // this is intercolumn stuff
 220                                 if (colinfo_[col].special_.empty())
 221                                         // Overtake possible lines
 222                                         colinfo_[col].special_ = docstring(colinfo_[col].lines_, '|');
 223                         }
 224                         int brace_open = 0;
 225                         int brace_close = 0;
 226                         while (it != hh.end()) {
 227                                 c = *it;
 228                                 colinfo_[col].special_ += c;
 229                                 if (c == '{')
 230                                         ++brace_open;
 231                                 else if (c == '}')
 232                                         ++brace_close;
 233                                 ++it;
 234                                 if (brace_open > 0 && brace_open == brace_close)
 235                                         break;
 236                         }
 237                         --it;
 238                         if (newcolumn) {
 239                                 colinfo_[col].lines_ = count(
 240                                         colinfo_[col].special_.begin(),
 241                                         colinfo_[col].special_.end(), '|');
 242                                 LYXERR(Debug::MATHED, "special column separator: `"
 243                                         << to_utf8(colinfo_[col].special_) << '\'');
 244                                 ++col;
 245                                 colinfo_[col].lines_ = 0;
 246                                 colinfo_[col].special_.clear();
 247                         }
 248                 } else if (col >= ncols()) {
 249                         // Only intercolumn stuff is allowed in the last
 250                         // dummy column
 251                         break;
 252                 } else if (c == 'c' || c == 'l' || c == 'r') {
 253                         colinfo_[col].align_ = static_cast<char>(c);
 254                         if (!colinfo_[col].special_.empty()) {
 255                                 colinfo_[col].special_ += c;
 256                                 colinfo_[col].lines_ = count(
 257                                                 colinfo_[col].special_.begin(),
 258                                                 colinfo_[col].special_.end(), '|');
 259                                 LYXERR(Debug::MATHED, "special column separator: `"
 260                                         << to_utf8(colinfo_[col].special_) << '\'');
 261                         }
 262                         ++col;
 263                         colinfo_[col].lines_ = 0;
 264                         colinfo_[col].special_.clear();
 265                 } else {
 266                         lyxerr << "unknown column separator: '" << c << "'" << endl;
 267                 }
 268         }
 269
 270 /*
 271         col_type n = hh.size();
 272         if (n > ncols())
 273                 n = ncols();
 274         for (col_type col = 0; col < n; ++col)
 275                 colinfo_[col].align_ = hh[col];
 276 */
 277 }
 278
 279
 280 InsetMathGrid::col_type InsetMathGrid::guessColumns(docstring const & hh)
 281 {
 282         col_type col = 0;
 283         for (docstring::const_iterator it = hh.begin(); it != hh.end(); ++it)
 284                 if (*it == 'c' || *it == 'l' || *it == 'r'||
 285                     *it == 'p' || *it == 'm' || *it == 'b')
 286                         ++col;
 287         // let's have at least one column, even if we did not recognize its
 288         // alignment
 289         if (col == 0)
 290                 col = 1;
 291         return col;
 292 }
 293
 294
 295 void InsetMathGrid::setHorizontalAlignment(char h, col_type col)
 296 {
 297         colinfo_[col].align_ = h;
 298         if (!colinfo_[col].special_.empty()) {
 299                 char_type & c = colinfo_[col].special_[colinfo_[col].special_.size() - 1];
 300                 if (c == 'l' || c == 'c' || c == 'r')
 301                         c = h;
 302         }
 303         // FIXME: Change alignment of p, m and b columns, too
 304 }
 305
 306
 307 char InsetMathGrid::horizontalAlignment(col_type col) const
 308 {
 309         return colinfo_[col].align_;
 310 }
 311
 312
 313 docstring InsetMathGrid::horizontalAlignments() const
 314 {
 315         docstring res;
 316         for (col_type col = 0; col < ncols(); ++col) {
 317                 if (colinfo_[col].special_.empty()) {
 318                         res += docstring(colinfo_[col].lines_, '|');
 319                         res += colinfo_[col].align_;
 320                 } else
 321                         res += colinfo_[col].special_;
 322         }
 323         if (colinfo_[ncols()].special_.empty())
 324                 return res + docstring(colinfo_[ncols()].lines_, '|');
 325         return res + colinfo_[ncols()].special_;
 326 }
 327
 328
 329 void InsetMathGrid::setVerticalAlignment(char c)
 330 {
 331         v_align_ = c;
 332 }
 333
 334
 335 char InsetMathGrid::verticalAlignment() const
 336 {
 337         return v_align_;
 338 }
 339
 340
 341 InsetMathGrid::col_type InsetMathGrid::ncols() const
 342 {
 343         return colinfo_.size() - 1;
 344 }
 345
 346
 347 InsetMathGrid::row_type InsetMathGrid::nrows() const
 348 {
 349         return rowinfo_.size() - 1;
 350 }
 351
 352
 353 InsetMathGrid::col_type InsetMathGrid::col(idx_type idx) const
 354 {
 355         return idx % ncols();
 356 }
 357
 358
 359 InsetMathGrid::row_type InsetMathGrid::row(idx_type idx) const
 360 {
 361         return idx / ncols();
 362 }
 363
 364
 365 InsetMathGrid::col_type InsetMathGrid::ncellcols(idx_type idx) const
 366 {
 367         col_type cols = 1;
 368         if (cellinfo_[idx].multi_ == CELL_NORMAL)
 369                 return cols;
 370         // If the cell at idx is already CELL_PART_OF_MULTICOLUMN we return
 371         // the number of remaining columns, not the ones of the complete
 372         // multicolumn cell. This makes it possible to always go to the next
 373         // cell with idx + ncellcols(idx) - 1.
 374         row_type const r = row(idx);
 375         while (idx+cols < nargs() && row(idx+cols) == r &&
 376                cellinfo_[idx+cols].multi_ == CELL_PART_OF_MULTICOLUMN)
 377                 cols++;
 378         return cols;
 379 }
 380
 381
 382 void InsetMathGrid::vcrskip(Length const & crskip, row_type row)
 383 {
 384         rowinfo_[row].crskip_ = crskip;
 385 }
 386
 387
 388 Length InsetMathGrid::vcrskip(row_type row) const
 389 {
 390         return rowinfo_[row].crskip_;
 391 }
 392
 393
 394 void InsetMathGrid::metrics(MetricsInfo & mi, Dimension & dim) const
 395 {
 396         // let the cells adjust themselves
 397         for (idx_type i = 0; i < nargs(); ++i) {
 398                 if (cellinfo_[i].multi_ != CELL_PART_OF_MULTICOLUMN) {
 399                         Dimension dimc;
 400                         cell(i).metrics(mi, dimc);
 401                 }
 402         }
 403
 404         BufferView & bv = *mi.base.bv;
 405
 406         // compute absolute sizes of vertical structure
 407         for (row_type row = 0; row < nrows(); ++row) {
 408                 int asc  = 0;
 409                 int desc = 0;
 410                 for (col_type col = 0; col < ncols(); ++col) {
 411                         idx_type const i = index(row, col);
 412                         if (cellinfo_[i].multi_ != CELL_PART_OF_MULTICOLUMN) {
 413                                 Dimension const & dimc = cell(i).dimension(bv);
 414                                 asc  = max(asc,  dimc.asc);
 415                                 desc = max(desc, dimc.des);
 416                         }
 417                 }
 418                 rowinfo_[row].ascent_  = asc;
 419                 rowinfo_[row].descent_ = desc;
 420         }
 421         rowinfo_[nrows()].ascent_  = 0;
 422         rowinfo_[nrows()].descent_ = 0;
 423
 424         // compute vertical offsets
 425         rowinfo_[0].offset_ = 0;
 426         for (row_type row = 1; row <= nrows(); ++row) {
 427                 rowinfo_[row].offset_ =
 428                         rowinfo_[row - 1].offset_ +
 429                         rowinfo_[row - 1].descent_ +
 430                         rowinfo_[row - 1].skipPixels(mi) +
 431                         rowsep() +
 432                         rowinfo_[row].lines_ * hlinesep() +
 433                         rowinfo_[row].ascent_;
 434         }
 435
 436         // adjust vertical offset
 437         int h = 0;
 438         switch (v_align_) {
 439                 case 't':
 440                         h = 0;
 441                         break;
 442                 case 'b':
 443                         h = rowinfo_[nrows() - 1].offset_;
 444                         break;
 445                 default:
 446                         h = rowinfo_[nrows() - 1].offset_ / 2;
 447         }
 448         for (row_type row = 0; row <= nrows(); ++row)
 449                 rowinfo_[row].offset_ -= h;
 450
 451
 452         // multicolumn cell widths, as a map from first column to width in a
 453         // vector of last columns.
 454         // This is only used if the grid has more than one row, since for
 455         // one-row grids multicolumn cells do not need special handling
 456         vector<map<col_type, int> > mcolwidths(ncols());
 457
 458         // compute absolute sizes of horizontal structure
 459         for (col_type col = 0; col < ncols(); ++col) {
 460                 int wid = 0;
 461                 for (row_type row = 0; row < nrows(); ++row) {
 462                         idx_type const i = index(row, col);
 463                         if (cellinfo_[i].multi_ != CELL_PART_OF_MULTICOLUMN) {
 464                                 int const w = cell(i).dimension(bv).wid;
 465                                 col_type const cols = ncellcols(i);
 466                                 if (cols > 1 && nrows() > 1) {
 467                                         col_type last = col+cols-1;
 468                                         LASSERT(last < ncols(), last = ncols()-1);
 469                                         map<col_type, int>::iterator it =
 470                                                 mcolwidths[last].find(col);
 471                                         if (it == mcolwidths[last].end())
 472                                                 mcolwidths[last][col] = w;
 473                                         else
 474                                                 it->second = max(it->second, w);
 475                                 } else
 476                                         wid = max(wid, w);
 477                         }
 478                 }
 479                 colinfo_[col].width_ = wid;
 480         }
 481         colinfo_[ncols()].width_  = 0;
 482
 483         // compute horizontal offsets
 484         colinfo_[0].offset_ = border() + colinfo_[0].lines_ * vlinesep();;
 485         for (col_type col = 1; col <= ncols(); ++col) {
 486                 colinfo_[col].offset_ =
 487                         colinfo_[col - 1].offset_ +
 488                         colinfo_[col - 1].width_ +
 489                         displayColSpace(col - 1) +
 490                         colsep() +
 491                         colinfo_[col].lines_ * vlinesep();
 492         }
 493
 494         // increase column widths for multicolumn cells if needed
 495         // FIXME: multicolumn lines are not yet considered
 496         for (col_type last = 0; last < ncols(); ++last) {
 497                 map<col_type, int> const & widths = mcolwidths[last];
 498                 // We increase the width of the last column of the multicol
 499                 // cell (some sort of left alignment). Since we iterate through
 500                 // the last and the first columns from left to right, we ensure
 501                 // that increased widths of previous columns are correctly
 502                 // taken into account for later columns, thus preventing
 503                 // unneeded width increasing.
 504                 for (map<col_type, int>::const_iterator it = widths.begin();
 505                      it != widths.end(); ++it) {
 506                         int const wid = it->second;
 507                         col_type const first = it->first;
 508                         int const nextoffset =
 509                                 colinfo_[first].offset_ +
 510                                 wid +
 511                                 displayColSpace(last) +
 512                                 colsep() +
 513                                 colinfo_[last+1].lines_ * vlinesep();
 514                         int const dx = nextoffset - colinfo_[last+1].offset_;
 515                         if (dx > 0) {
 516                                 colinfo_[last].width_ += dx;
 517                                 for (col_type col = last + 1; col <= ncols(); ++col)
 518                                         colinfo_[col].offset_ += dx;
 519                         }
 520                 }
 521         }
 522
 523
 524         dim.wid = colinfo_[ncols() - 1].offset_
 525                 + colinfo_[ncols() - 1].width_
 526                 + vlinesep() * colinfo_[ncols()].lines_
 527                 + border();
 528
 529         dim.asc = - rowinfo_[0].offset_
 530                 + rowinfo_[0].ascent_
 531                 + hlinesep() * rowinfo_[0].lines_
 532                 + border();
 533
 534         dim.des = rowinfo_[nrows() - 1].offset_
 535                 + rowinfo_[nrows() - 1].descent_
 536                 + hlinesep() * rowinfo_[nrows()].lines_
 537                 + border() + 1;
 538
 539
 540 /*
 541         // Increase ws_[i] for 'R' columns (except the first one)
 542         for (int i = 1; i < nc_; ++i)
 543                 if (align_[i] == 'R')
 544                         ws_[i] += 10 * df_width;
 545         // Increase ws_[i] for 'C' column
 546         if (align_[0] == 'C')
 547                 if (ws_[0] < 7 * workwidth / 8)
 548                         ws_[0] = 7 * workwidth / 8;
 549
 550         // Adjust local tabs
 551         width = colsep();
 552         for (cxrow = row_.begin(); cxrow; ++cxrow) {
 553                 int rg = COLSEP;
 554                 int lf = 0;
 555                 for (int i = 0; i < nc_; ++i) {
 556                         bool isvoid = false;
 557                         if (cxrow->getTab(i) <= 0) {
 558                                 cxrow->setTab(i, df_width);
 559                                 isvoid = true;
 560                         }
 561                         switch (align_[i]) {
 562                         case 'l':
 563                                 lf = 0;
 564                                 break;
 565                         case 'c':
 566                                 lf = (ws_[i] - cxrow->getTab(i))/2;
 567                                 break;
 568                         case 'r':
 569                         case 'R':
 570                                 lf = ws_[i] - cxrow->getTab(i);
 571                                 break;
 572                         case 'C':
 573                                 if (cxrow == row_.begin())
 574                                         lf = 0;
 575                                 else if (cxrow.is_last())
 576                                         lf = ws_[i] - cxrow->getTab(i);
 577                                 else
 578                                         lf = (ws_[i] - cxrow->getTab(i))/2;
 579                                 break;
 580                         }
 581                         int const ww = (isvoid) ? lf : lf + cxrow->getTab(i);
 582                         cxrow->setTab(i, lf + rg);
 583                         rg = ws_[i] - ww + colsep();
 584                         if (cxrow == row_.begin())
 585                                 width += ws_[i] + colsep();
 586                 }
 587                 cxrow->setBaseline(cxrow->getBaseline() - ascent);
 588         }
 589 */
 590         dim.wid += leftMargin() + rightMargin();
 591         metricsMarkers2(mi, dim);
 592         // Cache the inset dimension.
 593         setDimCache(mi, dim);
 594 }
 595
 596
 597 int InsetMathGrid::vLineHOffset(col_type col, unsigned int line) const
 598 {
 599         if (col < ncols())
 600                 return leftMargin() + colinfo_[col].offset_
 601                         - (colinfo_[col].lines_ - line - 1) * vlinesep()
 602                         - vlinesep()/2 - colsep()/2;
 603         else {
 604                 LASSERT(col == ncols(), return 0);
 605                 return leftMargin() + colinfo_[col-1].offset_ + colinfo_[col-1].width_
 606                         + line * vlinesep()
 607                         + vlinesep()/2 + colsep()/2;
 608         }
 609 }
 610
 611
 612 int InsetMathGrid::hLineVOffset(row_type row, unsigned int line) const
 613 {
 614         return rowinfo_[row].offset_
 615                 - rowinfo_[row].ascent_
 616                 - line * hlinesep()
 617                 - hlinesep()/2 - rowsep()/2;
 618 }
 619
 620
 621 void InsetMathGrid::draw(PainterInfo & pi, int x, int y) const
 622 {
 623         BufferView const & bv = *pi.base.bv;
 624
 625         for (idx_type idx = 0; idx < nargs(); ++idx) {
 626                 if (cellinfo_[idx].multi_ != CELL_PART_OF_MULTICOLUMN) {
 627                         cell(idx).draw(pi,
 628                                        x + leftMargin() + cellXOffset(bv, idx),
 629                                        y + cellYOffset(idx));
 630
 631                         row_type r = row(idx);
 632                         int const yy1 = y + hLineVOffset(r, 0);
 633                         int const yy2 = y + hLineVOffset(r + 1, rowinfo_[r + 1].lines_ - 1);
 634                         auto draw_left_borders = [&](col_type c) {
 635                                 for (unsigned int i = 0; i < colinfo_[c].lines_; ++i) {
 636                                         int const xx = x + vLineHOffset(c, i);
 637                                         pi.pain.line(xx, yy1, xx, yy2, Color_foreground);
 638                                 }
 639                         };
 640                         col_type c = col(idx);
 641                         // Draw inner left borders cell-by-cell because of multicolumns
 642                         draw_left_borders(c);
 643                         // Draw the right border (only once)
 644                         if (c == 0)
 645                                 draw_left_borders(ncols());
 646                 }
 647         }
 648
 649         // Draw horizontal borders
 650         for (row_type r = 0; r <= nrows(); ++r) {
 651                 int const xx1 = x + vLineHOffset(0, 0);
 652                 int const xx2 = x + vLineHOffset(ncols(), colinfo_[ncols()].lines_ - 1);
 653                 for (unsigned int i = 0; i < rowinfo_[r].lines_; ++i) {
 654                         int const yy = y + hLineVOffset(r, i);
 655                         pi.pain.line(xx1, yy, xx2, yy, Color_foreground);
 656                 }
 657         }
 658
 659         drawMarkers2(pi, x, y);
 660 }
 661
 662
 663 void InsetMathGrid::metricsT(TextMetricsInfo const & mi, Dimension & dim) const
 664 {
 665         // let the cells adjust themselves
 666         for (idx_type i = 0; i < nargs(); ++i)
 667                 if (cellinfo_[i].multi_ != CELL_PART_OF_MULTICOLUMN)
 668                         cell(i).metricsT(mi, dim);
 669
 670         // compute absolute sizes of vertical structure
 671         for (row_type row = 0; row < nrows(); ++row) {
 672                 int asc  = 0;
 673                 int desc = 0;
 674                 for (col_type col = 0; col < ncols(); ++col) {
 675                         idx_type const i = index(row, col);
 676                         if (cellinfo_[i].multi_ != CELL_PART_OF_MULTICOLUMN) {
 677                                 //MathData const & c = cell(i);
 678                                 // FIXME: BROKEN!
 679                                 Dimension dimc;
 680                                 asc  = max(asc,  dimc.ascent());
 681                                 desc = max(desc, dimc.descent());
 682                         }
 683                 }
 684                 rowinfo_[row].ascent_  = asc;
 685                 rowinfo_[row].descent_ = desc;
 686         }
 687         rowinfo_[nrows()].ascent_  = 0;
 688         rowinfo_[nrows()].descent_ = 0;
 689
 690         // compute vertical offsets
 691         rowinfo_[0].offset_ = 0;
 692         for (row_type row = 1; row <= nrows(); ++row) {
 693                 rowinfo_[row].offset_  =
 694                         rowinfo_[row - 1].offset_  +
 695                         rowinfo_[row - 1].descent_ +
 696                         //rowinfo_[row - 1].skipPixels(mi) +
 697                         1 + //rowsep() +
 698                         //rowinfo_[row].lines_ * hlinesep() +
 699                         rowinfo_[row].ascent_;
 700         }
 701
 702         // adjust vertical offset
 703         int h = 0;
 704         switch (v_align_) {
 705                 case 't':
 706                         h = 0;
 707                         break;
 708                 case 'b':
 709                         h = rowinfo_[nrows() - 1].offset_;
 710                         break;
 711                 default:
 712                         h = rowinfo_[nrows() - 1].offset_ / 2;
 713         }
 714         for (row_type row = 0; row <= nrows(); ++row)
 715                 rowinfo_[row].offset_ -= h;
 716
 717
 718         // compute absolute sizes of horizontal structure
 719         for (col_type col = 0; col < ncols(); ++col) {
 720                 int wid = 0;
 721                 for (row_type row = 0; row < nrows(); ++row) {
 722                         // FIXME: BROKEN!
 723                         //idx_type const i = index(row, col);
 724                         //if (cellinfo_[i].multi_ != CELL_PART_OF_MULTICOLUMN)
 725                         //      wid = max(wid, cell(i).width());
 726                 }
 727                 colinfo_[col].width_ = wid;
 728         }
 729         colinfo_[ncols()].width_  = 0;
 730
 731         // compute horizontal offsets
 732         colinfo_[0].offset_ = border();
 733         for (col_type col = 1; col <= ncols(); ++col) {
 734                 colinfo_[col].offset_ =
 735                         colinfo_[col - 1].offset_ +
 736                         colinfo_[col - 1].width_ +
 737                         displayColSpace(col - 1) +
 738                         1 ; //colsep() +
 739                         //colinfo_[col].lines_ * vlinesep();
 740         }
 741
 742
 743         dim.wid  =  colinfo_[ncols() - 1].offset_
 744                        + colinfo_[ncols() - 1].width_
 745                  //+ vlinesep() * colinfo_[ncols()].lines_
 746                        + 2;
 747
 748         dim.asc  = -rowinfo_[0].offset_
 749                        + rowinfo_[0].ascent_
 750                  //+ hlinesep() * rowinfo_[0].lines_
 751                        + 1;
 752
 753         dim.des  =  rowinfo_[nrows() - 1].offset_
 754                        + rowinfo_[nrows() - 1].descent_
 755                  //+ hlinesep() * rowinfo_[nrows()].lines_
 756                        + 1;
 757 }
 758
 759
 760 void InsetMathGrid::drawT(TextPainter & /*pain*/, int /*x*/, int /*y*/) const
 761 {
 762 //      for (idx_type idx = 0; idx < nargs(); ++idx)
 763 //              if (cellinfo_[idx].multi_ != CELL_PART_OF_MULTICOLUMN)
 764 //                      cell(idx).drawT(pain, x + cellXOffset(idx), y + cellYOffset(idx));
 765 }
 766
 767
 768 void InsetMathGrid::updateBuffer(ParIterator const & it, UpdateType utype)
 769 {
 770         // pass down
 771         for (idx_type idx = 0; idx < nargs(); ++idx)
 772                 if (cellinfo_[idx].multi_ != CELL_PART_OF_MULTICOLUMN)
 773                         cell(idx).updateBuffer(it, utype);
 774 }
 775
 776
 777 docstring InsetMathGrid::eolString(row_type row, bool fragile,
 778                 bool /*latex*/, bool last_eoln) const
 779 {
 780         docstring eol;
 781
 782         if (!rowinfo_[row].crskip_.zero())
 783                 eol += '[' + from_utf8(rowinfo_[row].crskip_.asLatexString()) + ']';
 784         else if(!rowinfo_[row].allow_newpage_)
 785                 eol += '*';
 786
 787         // make sure an upcoming '[' does not break anything
 788         if (row + 1 < nrows()) {
 789                 MathData const & c = cell(index(row + 1, 0));
 790                 if (!c.empty() && c.front()->getChar() == '[')
 791                         //eol += "[0pt]";
 792                         eol += "{}";
 793         }
 794
 795         // only add \\ if necessary
 796         if (eol.empty() && row + 1 == nrows() && (nrows() == 1 || !last_eoln))
 797                 return docstring();
 798
 799         return (fragile ? "\\protect\\\\" : "\\\\") + eol;
 800 }
 801
 802
 803 docstring InsetMathGrid::eocString(col_type col, col_type lastcol) const
 804 {
 805         if (col + 1 == lastcol)
 806                 return docstring();
 807         return from_ascii(" & ");
 808 }
 809
 810
 811 void InsetMathGrid::addRow(row_type row)
 812 {
 813         rowinfo_.insert(rowinfo_.begin() + row + 1, RowInfo());
 814         cells_.insert
 815                 (cells_.begin() + (row + 1) * ncols(), ncols(), MathData());
 816         cellinfo_.insert
 817                 (cellinfo_.begin() + (row + 1) * ncols(), ncols(), CellInfo());
 818 }
 819
 820
 821 void InsetMathGrid::delRow(row_type row)
 822 {
 823         if (nrows() == 1)
 824                 return;
 825
 826         cells_type::iterator it = cells_.begin() + row * ncols();
 827         cells_.erase(it, it + ncols());
 828
 829         vector<CellInfo>::iterator jt = cellinfo_.begin() + row * ncols();
 830         cellinfo_.erase(jt, jt + ncols());
 831
 832         rowinfo_.erase(rowinfo_.begin() + row);
 833 }
 834
 835
 836 void InsetMathGrid::copyRow(row_type row)
 837 {
 838         addRow(row);
 839         for (col_type col = 0; col < ncols(); ++col)
 840                 cells_[(row + 1) * ncols() + col] = cells_[row * ncols() + col];
 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         swap(cellinfo_, new_cellinfo);
 871
 872         ColInfo inf;
 873         inf.skip_  = defaultColSpace(newcol);
 874         inf.align_ = defaultColAlign(newcol);
 875         colinfo_.insert(colinfo_.begin() + newcol, inf);
 876 }
 877
 878
 879 void InsetMathGrid::delCol(col_type col)
 880 {
 881         if (ncols() == 1)
 882                 return;
 883
 884         cells_type tmpcells;
 885         vector<CellInfo> tmpcellinfo;
 886         for (col_type i = 0; i < nargs(); ++i)
 887                 if (i % ncols() != col) {
 888                         tmpcells.push_back(cells_[i]);
 889                         tmpcellinfo.push_back(cellinfo_[i]);
 890                 }
 891         swap(cells_, tmpcells);
 892         swap(cellinfo_, tmpcellinfo);
 893
 894         colinfo_.erase(colinfo_.begin() + col);
 895 }
 896
 897
 898 void InsetMathGrid::copyCol(col_type col)
 899 {
 900         addCol(col+1);
 901         for (row_type row = 0; row < nrows(); ++row)
 902                 cells_[row * ncols() + col + 1] = cells_[row * ncols() + col];
 903 }
 904
 905
 906 void InsetMathGrid::swapCol(col_type col)
 907 {
 908         if (ncols() == 1)
 909                 return;
 910         if (col + 1 == ncols())
 911                 --col;
 912         for (row_type row = 0; row < nrows(); ++row)
 913                 swap(cells_[row * ncols() + col], cells_[row * ncols() + col + 1]);
 914 }
 915
 916
 917 int InsetMathGrid::cellXOffset(BufferView const & bv, idx_type idx) const
 918 {
 919         if (cellinfo_[idx].multi_ == CELL_PART_OF_MULTICOLUMN)
 920                 return 0;
 921         col_type c = col(idx);
 922         int x = colinfo_[c].offset_;
 923         char align = displayColAlign(idx);
 924         Dimension const & celldim = cell(idx).dimension(bv);
 925         if (align == 'r' || align == 'R')
 926                 x += cellWidth(idx) - celldim.wid;
 927         if (align == 'c' || align == 'C')
 928                 x += (cellWidth(idx) - celldim.wid) / 2;
 929         return x;
 930 }
 931
 932
 933 int InsetMathGrid::cellYOffset(idx_type idx) const
 934 {
 935         return rowinfo_[row(idx)].offset_;
 936 }
 937
 938
 939 int InsetMathGrid::cellWidth(idx_type idx) const
 940 {
 941         switch (cellinfo_[idx].multi_) {
 942         case CELL_NORMAL:
 943                 return colinfo_[col(idx)].width_;
 944         case CELL_BEGIN_OF_MULTICOLUMN: {
 945                 col_type c1 = col(idx);
 946                 col_type c2 = c1 + ncellcols(idx);
 947                 return colinfo_[c2].offset_
 948                         - colinfo_[c1].offset_
 949                         - displayColSpace(c2)
 950                         - colsep()
 951                         - colinfo_[c2].lines_ * vlinesep();
 952         }
 953         case CELL_PART_OF_MULTICOLUMN:
 954                 return 0;
 955         }
 956         return 0;
 957 }
 958
 959
 960 bool InsetMathGrid::idxUpDown(Cursor & cur, bool up) const
 961 {
 962         if (up) {
 963                 if (cur.row() == 0)
 964                         return false;
 965                 cur.idx() -= ncols();
 966         } else {
 967                 if (cur.row() + 1 >= nrows())
 968                         return false;
 969                 cur.idx() += ncols();
 970         }
 971         // If we are in a multicolumn cell, move to the "real" cell
 972         while (cellinfo_[cur.idx()].multi_ == CELL_PART_OF_MULTICOLUMN) {
 973                 LASSERT(cur.idx() > 0, return false);
 974                 --cur.idx();
 975         }
 976         cur.pos() = cur.cell().x2pos(&cur.bv(), cur.x_target() - cur.cell().xo(cur.bv()));
 977         return true;
 978 }
 979
 980
 981 bool InsetMathGrid::idxBackward(Cursor & cur) const
 982 {
 983         // leave matrix if at the front edge
 984         if (cur.col() == 0)
 985                 return false;
 986         --cur.idx();
 987         // If we are in a multicolumn cell, move to the "real" cell
 988         while (cellinfo_[cur.idx()].multi_ == CELL_PART_OF_MULTICOLUMN) {
 989                 LASSERT(cur.idx() > 0, return false);
 990                 --cur.idx();
 991         }
 992         cur.pos() = cur.lastpos();
 993         return true;
 994 }
 995
 996
 997 bool InsetMathGrid::idxForward(Cursor & cur) const
 998 {
 999         // leave matrix if at the back edge
1000         if (cur.col() + 1 == ncols())
1001                 return false;
1002         ++cur.idx();
1003         // If we are in a multicolumn cell, move to the next cell
1004         while (cellinfo_[cur.idx()].multi_ == CELL_PART_OF_MULTICOLUMN) {
1005                 // leave matrix if at the back edge
1006                 if (cur.col() + 1 == ncols())
1007                         return false;
1008                 ++cur.idx();
1009         }
1010         cur.pos() = 0;
1011         return true;
1012 }
1013
1014
1015 bool InsetMathGrid::idxFirst(Cursor & cur) const
1016 {
1017         switch (v_align_) {
1018                 case 't':
1019                         cur.idx() = 0;
1020                         break;
1021                 case 'b':
1022                         cur.idx() = (nrows() - 1) * ncols();
1023                         break;
1024                 default:
1025                         cur.idx() = ((nrows() - 1) / 2) * ncols();
1026         }
1027         // If we are in a multicolumn cell, move to the "real" cell
1028         while (cellinfo_[cur.idx()].multi_ == CELL_PART_OF_MULTICOLUMN) {
1029                 LASSERT(cur.idx() > 0, return false);
1030                 --cur.idx();
1031         }
1032         cur.pos() = 0;
1033         return true;
1034 }
1035
1036
1037 bool InsetMathGrid::idxLast(Cursor & cur) const
1038 {
1039         switch (v_align_) {
1040                 case 't':
1041                         cur.idx() = ncols() - 1;
1042                         break;
1043                 case 'b':
1044                         cur.idx() = nargs() - 1;
1045                         break;
1046                 default:
1047                         cur.idx() = ((nrows() - 1) / 2 + 1) * ncols() - 1;
1048         }
1049         // If we are in a multicolumn cell, move to the "real" cell
1050         while (cellinfo_[cur.idx()].multi_ == CELL_PART_OF_MULTICOLUMN) {
1051                 LASSERT(cur.idx() > 0, return false);
1052                 --cur.idx();
1053         }
1054         cur.pos() = cur.lastpos();
1055         return true;
1056 }
1057
1058
1059 bool InsetMathGrid::idxDelete(idx_type & idx)
1060 {
1061         // nothing to do if we have just one row
1062         if (nrows() == 1)
1063                 return false;
1064
1065         // nothing to do if we are in the middle of the last row of the inset
1066         if (idx + ncols() > nargs())
1067                 return false;
1068
1069         // try to delete entire sequence of ncols() empty cells if possible
1070         for (idx_type i = idx; i < idx + ncols(); ++i)
1071                 if (!cell(i).empty())
1072                         return false;
1073
1074         // move cells if necessary
1075         for (idx_type i = index(row(idx), 0); i < idx; ++i)
1076                 swap(cell(i), cell(i + ncols()));
1077
1078         delRow(row(idx));
1079
1080         if (idx >= nargs())
1081                 idx = nargs() - 1;
1082
1083         // undo effect of Ctrl-Tab (i.e. pull next cell)
1084         //if (idx + 1 != nargs())
1085         //      cell(idx).swap(cell(idx + 1));
1086
1087         // we handled the event..
1088         return true;
1089 }
1090
1091
1092 // reimplement old behaviour when pressing Delete in the last position
1093 // of a cell
1094 void InsetMathGrid::idxGlue(idx_type idx)
1095 {
1096         col_type c = col(idx);
1097         if (c + 1 == ncols()) {
1098                 if (row(idx) + 1 != nrows()) {
1099                         for (col_type cc = 0; cc < ncols(); ++cc)
1100                                 cell(idx).append(cell(idx + cc + 1));
1101                         delRow(row(idx) + 1);
1102                 }
1103         } else {
1104                 idx_type idx_next = idx + 1;
1105                 while (idx_next < nargs() &&
1106                        cellinfo_[idx_next].multi_ == CELL_PART_OF_MULTICOLUMN)
1107                         ++idx_next;
1108                 if (idx_next < nargs())
1109                         cell(idx).append(cell(idx_next));
1110                 col_type oldcol = c + 1;
1111                 for (col_type cc = c + 2; cc < ncols(); ++cc)
1112                         cell(idx - oldcol + cc) = cell(idx - oldcol + 1 + cc);
1113                 cell(idx - c + ncols() - 1).clear();
1114         }
1115 }
1116
1117
1118 InsetMathGrid::RowInfo const & InsetMathGrid::rowinfo(row_type row) const
1119 {
1120         return rowinfo_[row];
1121 }
1122
1123
1124 InsetMathGrid::RowInfo & InsetMathGrid::rowinfo(row_type row)
1125 {
1126         return rowinfo_[row];
1127 }
1128
1129
1130 bool InsetMathGrid::idxBetween(idx_type idx, idx_type from, idx_type to) const
1131 {
1132         row_type const ri = row(idx);
1133         row_type const r1 = min(row(from), row(to));
1134         row_type const r2 = max(row(from), row(to));
1135         col_type const ci = col(idx);
1136         col_type const c1 = min(col(from), col(to));
1137         col_type const c2 = max(col(from), col(to));
1138         return r1 <= ri && ri <= r2 && c1 <= ci && ci <= c2;
1139 }
1140
1141
1142 void InsetMathGrid::normalize(NormalStream & os) const
1143 {
1144         os << "[grid ";
1145         for (row_type row = 0; row < nrows(); ++row) {
1146                 os << "[row ";
1147                 for (col_type col = 0; col < ncols(); ++col) {
1148                         idx_type const i = index(row, col);
1149                         switch (cellinfo_[i].multi_) {
1150                         case CELL_NORMAL:
1151                                 os << "[cell " << cell(i) << ']';
1152                                 break;
1153                         case CELL_BEGIN_OF_MULTICOLUMN:
1154                                 os << "[cell colspan="
1155                                    << static_cast<int>(ncellcols(i)) << ' '
1156                                    << cell(i) << ']';
1157                                 break;
1158                         case CELL_PART_OF_MULTICOLUMN:
1159                                 break;
1160                         }
1161                 }
1162                 os << ']';
1163         }
1164         os << ']';
1165 }
1166
1167
1168 void InsetMathGrid::mathmlize(MathStream & os) const
1169 {
1170         bool const havetable = nrows() > 1 || ncols() > 1;
1171         if (havetable)
1172                 os << MTag("mtable");
1173         char const * const celltag = havetable ? "mtd" : "mrow";
1174         for (row_type row = 0; row < nrows(); ++row) {
1175                 if (havetable)
1176                         os << MTag("mtr");
1177                 for (col_type col = 0; col < ncols(); ++col) {
1178                         idx_type const i = index(row, col);
1179                         if (cellinfo_[i].multi_ != CELL_PART_OF_MULTICOLUMN) {
1180                                 col_type const cellcols = ncellcols(i);
1181                                 ostringstream attr;
1182                                 if (havetable && cellcols > 1)
1183                                         attr << "colspan='" << cellcols << '\'';
1184                                 os << MTag(celltag, attr.str());
1185                                 os << cell(index(row, col));
1186                                 os << ETag(celltag);
1187                         }
1188                 }
1189                 if (havetable)
1190                         os << ETag("mtr");
1191         }
1192         if (havetable)
1193                 os << ETag("mtable");
1194 }
1195
1196
1197 // FIXME XHTML
1198 // We need to do something about alignment here.
1199 void InsetMathGrid::htmlize(HtmlStream & os, string attrib) const
1200 {
1201         bool const havetable = nrows() > 1 || ncols() > 1;
1202         if (!havetable) {
1203                 os << cell(index(0, 0));
1204                 return;
1205         }
1206         os << MTag("table", attrib);
1207         for (row_type row = 0; row < nrows(); ++row) {
1208                 os << MTag("tr");
1209                 for (col_type col = 0; col < ncols(); ++col) {
1210                         idx_type const i = index(row, col);
1211                         if (cellinfo_[i].multi_ != CELL_PART_OF_MULTICOLUMN) {
1212                                 col_type const cellcols = ncellcols(i);
1213                                 ostringstream attr;
1214                                 if (cellcols > 1)
1215                                         attr << "colspan='" << cellcols << '\'';
1216                                 os << MTag("td", attr.str());
1217                                 os << cell(index(row, col));
1218                                 os << ETag("td");
1219                         }
1220                 }
1221                 os << ETag("tr");
1222         }
1223         os << ETag("table");
1224 }
1225
1226
1227 void InsetMathGrid::htmlize(HtmlStream & os) const
1228 {
1229         htmlize(os, "class='mathtable'");
1230 }
1231
1232
1233 void InsetMathGrid::validate(LaTeXFeatures & features) const
1234 {
1235         if (features.runparams().math_flavor == OutputParams::MathAsHTML
1236             && (nrows() > 1 || ncols() > 1)) {
1237                 // CSS taken from InsetMathCases
1238                 features.addCSSSnippet(
1239                         "table.mathtable{display: inline-block; text-align: center; border: none;"
1240                         "border-left: thin solid black; vertical-align: middle; padding-left: 0.5ex;}\n"
1241                         "table.mathtable td {text-align: left; border: none;}");
1242         }
1243         InsetMathNest::validate(features);
1244 }
1245
1246
1247 void InsetMathGrid::write(WriteStream & os) const
1248 {
1249         write(os, 0, 0, nrows(), ncols());
1250 }
1251
1252 void InsetMathGrid::write(WriteStream & os,
1253                           row_type beg_row, col_type beg_col,
1254                           row_type end_row, col_type end_col) const
1255 {
1256         MathEnsurer ensurer(os, false);
1257         docstring eol;
1258         for (row_type row = beg_row; row < end_row; ++row) {
1259                 os << verboseHLine(rowinfo_[row].lines_);
1260                 // don't write & and empty cells at end of line,
1261                 // unless there are vertical lines
1262                 col_type lastcol = 0;
1263                 bool emptyline = true;
1264                 bool last_eoln = true;
1265                 for (col_type col = beg_col; col < end_col; ++col) {
1266                         idx_type const idx = index(row, col);
1267                         bool const empty_cell = cell(idx).empty();
1268                         if (!empty_cell || cellinfo_[idx].multi_ != CELL_NORMAL)
1269                                 last_eoln = false;
1270                         if (!empty_cell || cellinfo_[idx].multi_ != CELL_NORMAL ||
1271                             colinfo_[col + 1].lines_) {
1272                                 lastcol = col + 1;
1273                                 emptyline = false;
1274                         }
1275                 }
1276                 for (col_type col = beg_col; col < end_col;) {
1277                         int nccols = 1;
1278                         idx_type const idx = index(row, col);
1279                         TexRow::RowEntry entry = TexRow::mathEntry(id(),idx);
1280                         os.texrow().start(entry);
1281                         if (col >= lastcol) {
1282                                 ++col;
1283                                 continue;
1284                         }
1285                         Changer dummy = os.changeRowEntry(entry);
1286                         if (cellinfo_[idx].multi_ == CELL_BEGIN_OF_MULTICOLUMN) {
1287                                 size_t s = col + 1;
1288                                 while (s < ncols() &&
1289                                        cellinfo_[index(row, s)].multi_ == CELL_PART_OF_MULTICOLUMN)
1290                                         s++;
1291                                 nccols = s - col;
1292                                 os << "\\multicolumn{" << nccols
1293                                    << "}{" << cellinfo_[idx].align_
1294                                    << "}{";
1295                         }
1296                         os << cell(idx);
1297                         if (os.pendingBrace())
1298                                 ModeSpecifier specifier(os, TEXT_MODE);
1299                         if (cellinfo_[idx].multi_ == CELL_BEGIN_OF_MULTICOLUMN)
1300                                 os << '}';
1301                         os << eocString(col + nccols - 1, lastcol);
1302                         col += nccols;
1303                 }
1304                 eol = eolString(row, os.fragile(), os.latex(), last_eoln);
1305                 os << eol;
1306                 // append newline only if line wasn't completely empty
1307                 // and the formula is not written on a single line
1308                 bool const empty = emptyline && eol.empty();
1309                 if (!empty && nrows() > 1)
1310                         os << "\n";
1311         }
1312         // @TODO use end_row instead of nrows() ?
1313         docstring const s = verboseHLine(rowinfo_[nrows()].lines_);
1314         if (!s.empty()) {
1315                 if (eol.empty()) {
1316                         if (os.fragile())
1317                                 os << "\\protect";
1318                         os << "\\\\";
1319                 }
1320                 os << s;
1321         }
1322 }
1323
1324
1325 int InsetMathGrid::colsep() const
1326 {
1327         return 6;
1328 }
1329
1330
1331 int InsetMathGrid::rowsep() const
1332 {
1333         return 6;
1334 }
1335
1336
1337 int InsetMathGrid::hlinesep() const
1338 {
1339         return 3;
1340 }
1341
1342
1343 int InsetMathGrid::vlinesep() const
1344 {
1345         return 3;
1346 }
1347
1348
1349 int InsetMathGrid::border() const
1350 {
1351         return 1;
1352 }
1353
1354
1355 void InsetMathGrid::splitCell(Cursor & cur)
1356 {
1357         if (cur.idx() == cur.lastidx())
1358                 return;
1359         MathData ar = cur.cell();
1360         ar.erase(0, cur.pos());
1361         cur.cell().erase(cur.pos(), cur.lastpos());
1362         ++cur.idx();
1363         while (cur.idx() << nargs() &&
1364                cellinfo_[cur.idx()].multi_ == CELL_BEGIN_OF_MULTICOLUMN)
1365                 ++cur.idx();
1366         cur.pos() = 0;
1367         cur.cell().insert(0, ar);
1368 }
1369
1370
1371 char InsetMathGrid::displayColAlign(idx_type idx) const
1372 {
1373         if (cellinfo_[idx].multi_ == CELL_BEGIN_OF_MULTICOLUMN) {
1374                 // align_ may also contain lines like "||r|", so this is
1375                 // not complete, but we catch at least the simple cases.
1376                 if (cellinfo_[idx].align_ == "c")
1377                         return 'c';
1378                 if (cellinfo_[idx].align_ == "l")
1379                         return 'l';
1380                 if (cellinfo_[idx].align_ == "r")
1381                         return 'r';
1382         }
1383         return colinfo_[col(idx)].align_;
1384 }
1385
1386
1387 int InsetMathGrid::displayColSpace(col_type col) const
1388 {
1389         return colinfo_[col].skip_;
1390 }
1391
1392 void InsetMathGrid::doDispatch(Cursor & cur, FuncRequest & cmd)
1393 {
1394         //lyxerr << "*** InsetMathGrid: request: " << cmd << endl;
1395
1396         Parse::flags parseflg = Parse::QUIET | Parse::USETEXT;
1397
1398         FuncCode const act = cmd.action();
1399         switch (act) {
1400
1401         // insert file functions
1402         case LFUN_LINE_DELETE_FORWARD:
1403                 cur.recordUndoInset();
1404                 //autocorrect_ = false;
1405                 //macroModeClose();
1406                 //if (selection_) {
1407                 //      selDel();
1408                 //      break;
1409                 //}
1410                 if (nrows() > 1)
1411                         delRow(cur.row());
1412                 if (cur.idx() > cur.lastidx())
1413                         cur.idx() = cur.lastidx();
1414                 if (cur.pos() > cur.lastpos())
1415                         cur.pos() = cur.lastpos();
1416                 break;
1417
1418         case LFUN_CELL_SPLIT:
1419                 cur.recordUndo();
1420                 splitCell(cur);
1421                 break;
1422
1423         case LFUN_CELL_BACKWARD:
1424                 // See below.
1425                 cur.selection(false);
1426                 if (!idxPrev(cur)) {
1427                         cmd = FuncRequest(LFUN_FINISHED_BACKWARD);
1428                         cur.undispatched();
1429                 }
1430                 break;
1431
1432         case LFUN_CELL_FORWARD:
1433                 // Can't handle selection by additional 'shift' as this is
1434                 // hard bound to LFUN_CELL_BACKWARD
1435                 cur.selection(false);
1436                 if (!idxNext(cur)) {
1437                         cmd = FuncRequest(LFUN_FINISHED_FORWARD);
1438                         cur.undispatched();
1439                 }
1440                 break;
1441
1442         case LFUN_NEWLINE_INSERT: {
1443                 cur.recordUndoInset();
1444                 row_type const r = cur.row();
1445                 addRow(r);
1446
1447                 // split line
1448                 for (col_type c = col(cur.idx()) + 1; c < ncols(); ++c)
1449                         swap(cell(index(r, c)), cell(index(r + 1, c)));
1450
1451                 // split cell
1452                 splitCell(cur);
1453                 if (ncols() > 1)
1454                         swap(cell(cur.idx()), cell(cur.idx() + ncols() - 1));
1455                 if (cur.idx() > 0)
1456                         --cur.idx();
1457                 cur.pos() = cur.lastpos();
1458                 cur.forceBufferUpdate();
1459                 //mathcursor->normalize();
1460                 //cmd = FuncRequest(LFUN_FINISHED_BACKWARD);
1461                 break;
1462         }
1463
1464         case LFUN_TABULAR_FEATURE: {
1465                 cur.recordUndoInset();
1466                 //lyxerr << "handling tabular-feature " << to_utf8(cmd.argument()) << endl;
1467                 istringstream is(to_utf8(cmd.argument()));
1468                 string s;
1469                 is >> s;
1470                 if (s == "valign-top")
1471                         setVerticalAlignment('t');
1472                 else if (s == "valign-middle")
1473                         setVerticalAlignment('c');
1474                 else if (s == "valign-bottom")
1475                         setVerticalAlignment('b');
1476                 else if (s == "align-left")
1477                         setHorizontalAlignment('l', cur.col());
1478                 else if (s == "align-right")
1479                         setHorizontalAlignment('r', cur.col());
1480                 else if (s == "align-center")
1481                         setHorizontalAlignment('c', cur.col());
1482                 else if (s == "append-row")
1483                         for (int i = 0, n = extractInt(is); i < n; ++i)
1484                                 addRow(cur.row());
1485                 else if (s == "delete-row") {
1486                         cur.clearSelection(); // bug 4323
1487                         for (int i = 0, n = extractInt(is); i < n; ++i) {
1488                                 delRow(cur.row());
1489                                 if (cur.idx() >= nargs())
1490                                         cur.idx() -= ncols();
1491                         }
1492                         cur.pos() = 0; // trick, see below
1493                 }
1494                 else if (s == "copy-row") {
1495                         // Here (as later) we save the cursor col/row
1496                         // in order to restore it after operation.
1497                         row_type const r = cur.row();
1498                         col_type const c = cur.col();
1499                         for (int i = 0, n = extractInt(is); i < n; ++i)
1500                                 copyRow(cur.row());
1501                         cur.idx() = index(r, c);
1502                 }
1503                 else if (s == "swap-row") {
1504                         swapRow(cur.row());
1505                         // Trick to suppress same-idx-means-different-cell
1506                         // assertion crash:
1507                         cur.pos() = 0;
1508                 }
1509                 else if (s == "add-hline-above")
1510                         rowinfo_[cur.row()].lines_++;
1511                 else if (s == "add-hline-below")
1512                         rowinfo_[cur.row()+1].lines_++;
1513                 else if (s == "delete-hline-above")
1514                         rowinfo_[cur.row()].lines_--;
1515                 else if (s == "delete-hline-below")
1516                         rowinfo_[cur.row()+1].lines_--;
1517                 else if (s == "append-column") {
1518                         row_type const r = cur.row();
1519                         col_type const c = cur.col();
1520                         for (int i = 0, n = extractInt(is); i < n; ++i)
1521                                 addCol(cur.col() + 1);
1522                         cur.idx() = index(r, c);
1523                 }
1524                 else if (s == "delete-column") {
1525                         cur.clearSelection(); // bug 4323
1526                         row_type const r = cur.row();
1527                         col_type const c = cur.col();
1528                         for (int i = 0, n = extractInt(is); i < n; ++i)
1529                                 delCol(col(cur.idx()));
1530                         cur.idx() = index(r, min(c, cur.ncols() - 1));
1531                         cur.pos() = 0; // trick, see above
1532                 }
1533                 else if (s == "copy-column") {
1534                         row_type const r = cur.row();
1535                         col_type const c = cur.col();
1536                         copyCol(cur.col());
1537                         cur.idx() = index(r, c);
1538                 }
1539                 else if (s == "swap-column") {
1540                         swapCol(cur.col());
1541                         cur.pos() = 0; // trick, see above
1542                 }
1543                 else if (s == "add-vline-left") {
1544                         colinfo_[cur.col()].lines_++;
1545                         if (!colinfo_[cur.col()].special_.empty())
1546                                 colinfo_[cur.col()].special_ += '|';
1547                 }
1548                 else if (s == "add-vline-right") {
1549                         colinfo_[cur.col()+1].lines_++;
1550                         if (!colinfo_[cur.col()+1].special_.empty())
1551                                 colinfo_[cur.col()+1].special_.insert(0, 1, '|');
1552                 }
1553                 else if (s == "delete-vline-left") {
1554                         colinfo_[cur.col()].lines_--;
1555                         docstring & special = colinfo_[cur.col()].special_;
1556                         if (!special.empty()) {
1557                                 docstring::size_type i = special.rfind('|');
1558                                 LASSERT(i != docstring::npos, break);
1559                                 special.erase(i, 1);
1560                         }
1561                 }
1562                 else if (s == "delete-vline-right") {
1563                         colinfo_[cur.col()+1].lines_--;
1564                         docstring & special = colinfo_[cur.col()+1].special_;
1565                         if (!special.empty()) {
1566                                 docstring::size_type i = special.find('|');
1567                                 LASSERT(i != docstring::npos, break);
1568                                 special.erase(i, 1);
1569                         }
1570                 }
1571                 else {
1572                         cur.undispatched();
1573                         break;
1574                 }
1575                 // perhaps this should be FINISHED_BACKWARD -- just for clarity?
1576                 //lyxerr << "returning FINISHED_LEFT" << endl;
1577                 break;
1578         }
1579
1580         case LFUN_CLIPBOARD_PASTE:
1581                 parseflg |= Parse::VERBATIM;
1582                 // fall through
1583         case LFUN_PASTE: {
1584                 if (cur.currentMode() <= TEXT_MODE)
1585                         parseflg |= Parse::TEXTMODE;
1586                 cur.message(_("Paste"));
1587                 cap::replaceSelection(cur);
1588                 docstring topaste;
1589                 if (cmd.argument().empty() && !theClipboard().isInternal())
1590                         topaste = theClipboard().getAsText(frontend::Clipboard::PlainTextType);
1591                 else {
1592                         idocstringstream is(cmd.argument());
1593                         int n = 0;
1594                         is >> n;
1595                         topaste = cap::selection(n, buffer().params().documentClassPtr());
1596                 }
1597                 InsetMathGrid grid(buffer_, 1, 1);
1598                 if (!topaste.empty())
1599                         if ((topaste.size() == 1 && isAscii(topaste))
1600                             || !mathed_parse_normal(grid, topaste, parseflg)) {
1601                                 resetGrid(grid);
1602                                 mathed_parse_normal(grid, topaste, parseflg | Parse::VERBATIM);
1603                         }
1604
1605                 bool hline_enabled = false;
1606                 FuncRequest fr = FuncRequest(LFUN_TABULAR_FEATURE, "add-hline-above");
1607                 FuncStatus status;
1608                 if (getStatus(cur, fr, status))
1609                         hline_enabled = status.enabled();
1610                 if (grid.nargs() == 1) {
1611                         // single cell/part of cell
1612                         cur.recordUndoInset();
1613                         cur.cell().insert(cur.pos(), grid.cell(0));
1614                         cur.pos() += grid.cell(0).size();
1615                         if (hline_enabled)
1616                                 rowinfo_[cur.row()].lines_ += grid.rowinfo_[0].lines_;
1617                         else {
1618                                 for (unsigned int l = 0; l < grid.rowinfo_[0].lines_; ++l) {
1619                                          cur.cell().insert(0,
1620                                                 MathAtom(new InsetMathUnknown(from_ascii("\\hline"))));
1621                                          cur.pos()++;
1622                                 }
1623                         }
1624                 } else {
1625                         // multiple cells
1626                         cur.recordUndoInset();
1627                         col_type const numcols =
1628                                 min(grid.ncols(), ncols() - col(cur.idx()));
1629                         row_type const numrows =
1630                                 min(grid.nrows(), nrows() - cur.row());
1631                         for (row_type r = 0; r < numrows; ++r) {
1632                                 for (col_type c = 0; c < numcols; ++c) {
1633                                         idx_type i = index(r + cur.row(), c + col(cur.idx()));
1634                                         cell(i).insert(0, grid.cell(grid.index(r, c)));
1635                                 }
1636                                 if (hline_enabled)
1637                                         rowinfo_[r].lines_ += grid.rowinfo_[r].lines_;
1638                                 else {
1639                                         for (unsigned int l = 0; l < grid.rowinfo_[r].lines_; ++l) {
1640                                                 idx_type i = index(r + cur.row(), 0);
1641                                                 cell(i).insert(0,
1642                                                         MathAtom(new InsetMathUnknown(from_ascii("\\hline"))));
1643                                         }
1644                                 }
1645                                 // append the left over horizontal cells to the last column
1646                                 idx_type i = index(r + cur.row(), ncols() - 1);
1647                                 for (InsetMath::col_type c = numcols; c < grid.ncols(); ++c)
1648                                         cell(i).append(grid.cell(grid.index(r, c)));
1649                         }
1650                         // append the left over vertical cells to the last _cell_
1651                         idx_type i = nargs() - 1;
1652                         for (row_type r = numrows; r < grid.nrows(); ++r) {
1653                                 for (col_type c = 0; c < grid.ncols(); ++c)
1654                                         cell(i).append(grid.cell(grid.index(r, c)));
1655                                 if (hline_enabled)
1656                                         rowinfo_[r].lines_ += grid.rowinfo_[r].lines_;
1657                                 else {
1658                                         for (unsigned int l = 0; l < grid.rowinfo_[r].lines_; ++l) {
1659                                                 cell(i).insert(0,
1660                                                         MathAtom(new InsetMathUnknown(from_ascii("\\hline"))));
1661                                         }
1662                                 }
1663                         }
1664                 }
1665                 cur.clearSelection(); // bug 393
1666                 // FIXME audit setBuffer calls
1667                 cur.inset().setBuffer(*buffer_);
1668                 cur.forceBufferUpdate();
1669                 cur.finishUndo();
1670                 break;
1671         }
1672
1673         case LFUN_LINE_BEGIN:
1674         case LFUN_WORD_BACKWARD:
1675         case LFUN_WORD_LEFT:
1676                 cur.screenUpdateFlags(Update::Decoration | Update::FitCursor);
1677                 // fall through
1678         case LFUN_LINE_BEGIN_SELECT:
1679         case LFUN_WORD_BACKWARD_SELECT:
1680         case LFUN_WORD_LEFT_SELECT:
1681                 cur.selHandle(act == LFUN_WORD_BACKWARD_SELECT ||
1682                                 act == LFUN_WORD_LEFT_SELECT ||
1683                                 act == LFUN_LINE_BEGIN_SELECT);
1684                 cur.macroModeClose();
1685                 if (cur.pos() != 0) {
1686                         cur.pos() = 0;
1687                 } else if (cur.idx() % cur.ncols() != 0) {
1688                         cur.idx() -= cur.idx() % cur.ncols();
1689                         cur.pos() = 0;
1690                 } else if (cur.idx() != 0) {
1691                         cur.idx() = 0;
1692                         cur.pos() = 0;
1693                 } else {
1694                         cmd = FuncRequest(LFUN_FINISHED_BACKWARD);
1695                         cur.undispatched();
1696                 }
1697                 break;
1698
1699         case LFUN_WORD_FORWARD:
1700         case LFUN_WORD_RIGHT:
1701         case LFUN_LINE_END:
1702                 cur.screenUpdateFlags(Update::Decoration | Update::FitCursor);
1703                 // fall through
1704         case LFUN_WORD_FORWARD_SELECT:
1705         case LFUN_WORD_RIGHT_SELECT:
1706         case LFUN_LINE_END_SELECT:
1707                 cur.selHandle(act == LFUN_WORD_FORWARD_SELECT ||
1708                                 act == LFUN_WORD_RIGHT_SELECT ||
1709                                 act == LFUN_LINE_END_SELECT);
1710                 cur.macroModeClose();
1711                 cur.clearTargetX();
1712                 if (cur.pos() != cur.lastpos()) {
1713                         cur.pos() = cur.lastpos();
1714                 } else if ((cur.idx() + 1) % cur.ncols() != 0) {
1715                         cur.idx() += cur.ncols() - 1 - cur.idx() % cur.ncols();
1716                         cur.pos() = cur.lastpos();
1717                 } else if (cur.idx() != cur.lastidx()) {
1718                         cur.idx() = cur.lastidx();
1719                         cur.pos() = cur.lastpos();
1720                 } else {
1721                         cmd = FuncRequest(LFUN_FINISHED_FORWARD);
1722                         cur.undispatched();
1723                 }
1724                 break;
1725
1726         default:
1727                 InsetMathNest::doDispatch(cur, cmd);
1728         }
1729 }
1730
1731
1732 bool InsetMathGrid::getStatus(Cursor & cur, FuncRequest const & cmd,
1733                 FuncStatus & status) const
1734 {
1735         switch (cmd.action()) {
1736         case LFUN_TABULAR_FEATURE: {
1737                 string s = cmd.getArg(0);
1738                 if (&cur.inset() != this) {
1739                         // Table actions requires that the cursor is _inside_ the
1740                         // table.
1741                         status.setEnabled(false);
1742                         status.message(from_utf8(N_("Cursor not in table")));
1743                         return true;
1744                 }
1745                 if (nrows() <= 1 && (s == "delete-row" || s == "swap-row")) {
1746                         status.setEnabled(false);
1747                         status.message(from_utf8(N_("Only one row")));
1748                         return true;
1749                 }
1750                 if (ncols() <= 1 &&
1751                     (s == "delete-column" || s == "swap-column")) {
1752                         status.setEnabled(false);
1753                         status.message(from_utf8(N_("Only one column")));
1754                         return true;
1755                 }
1756                 if ((rowinfo_[cur.row()].lines_ == 0 &&
1757                      s == "delete-hline-above") ||
1758                     (rowinfo_[cur.row() + 1].lines_ == 0 &&
1759                      s == "delete-hline-below")) {
1760                         status.setEnabled(false);
1761                         status.message(from_utf8(N_("No hline to delete")));
1762                         return true;
1763                 }
1764
1765                 if ((colinfo_[cur.col()].lines_ == 0 &&
1766                      s == "delete-vline-left") ||
1767                     (colinfo_[cur.col() + 1].lines_ == 0 &&
1768                      s == "delete-vline-right")) {
1769                         status.setEnabled(false);
1770                         status.message(from_utf8(N_("No vline to delete")));
1771                         return true;
1772                 }
1773                 if (s == "valign-top" || s == "valign-middle" ||
1774                     s == "valign-bottom" || s == "align-left" ||
1775                     s == "align-right" || s == "align-center") {
1776                         status.setEnabled(true);
1777                         char const ha = horizontalAlignment(cur.col());
1778                         char const va = verticalAlignment();
1779                         status.setOnOff((s == "align-left" && ha == 'l')
1780                                         || (s == "align-right"   && ha == 'r')
1781                                         || (s == "align-center"  && ha == 'c')
1782                                         || (s == "valign-top"    && va == 't')
1783                                         || (s == "valign-bottom" && va == 'b')
1784                                         || (s == "valign-middle" && va == 'c'));
1785                         return true;
1786                 }
1787                 if (s == "append-row" || s == "delete-row" ||
1788                     s == "copy-row" || s == "swap-row" ||
1789                     s == "add-hline-above" || s == "add-hline-below" ||
1790                     s == "delete-hline-above" || s == "delete-hline-below" ||
1791                     s == "append-column" || s == "delete-column" ||
1792                     s == "copy-column" || s == "swap-column" ||
1793                     s == "add-vline-left" || s == "add-vline-right" ||
1794                     s == "delete-vline-left" || s == "delete-vline-right") {
1795                         status.setEnabled(true);
1796                 } else {
1797                         status.setEnabled(false);
1798                         status.message(bformat(
1799                             from_utf8(N_("Unknown tabular feature '%1$s'")),
1800                             from_utf8(s)));
1801                 }
1802
1803 #if 0
1804                 // FIXME: What did this code do?
1805                 // Please check whether it is still needed!
1806                 // should be more precise
1807                 if (v_align_ == '\0') {
1808                         status.enable(true);
1809                         break;
1810                 }
1811                 if (cmd.argument().empty()) {
1812                         status.enable(false);
1813                         break;
1814                 }
1815                 if (!contains("tcb", cmd.argument()[0])) {
1816                         status.enable(false);
1817                         break;
1818                 }
1819                 status.setOnOff(cmd.argument()[0] == v_align_);
1820                 status.setEnabled(true);
1821 #endif
1822                 return true;
1823         }
1824
1825         case LFUN_CELL_SPLIT:
1826                 status.setEnabled(cur.idx() != cur.lastidx());
1827                 return true;
1828
1829         case LFUN_CELL_BACKWARD:
1830         case LFUN_CELL_FORWARD:
1831                 status.setEnabled(true);
1832                 return true;
1833
1834         default:
1835                 break;
1836         }
1837         return InsetMathNest::getStatus(cur, cmd, status);
1838 }
1839
1840
1841 // static
1842 char InsetMathGrid::colAlign(HullType type, col_type col)
1843 {
1844         switch (type) {
1845         case hullEqnArray:
1846                 return "rcl"[col % 3];
1847
1848         case hullMultline:
1849         case hullGather:
1850                 return 'c';
1851
1852         case hullAlign:
1853         case hullAlignAt:
1854         case hullXAlignAt:
1855         case hullXXAlignAt:
1856         case hullFlAlign:
1857                 return "rl"[col & 1];
1858
1859         case hullUnknown:
1860         case hullNone:
1861         case hullSimple:
1862         case hullEquation:
1863         case hullRegexp:
1864                 return 'c';
1865         }
1866         // avoid warning
1867         return 'c';
1868 }
1869
1870
1871 //static
1872 int InsetMathGrid::colSpace(HullType type, col_type col)
1873 {
1874         int alignInterSpace = 0;
1875         switch (type) {
1876         case hullUnknown:
1877         case hullNone:
1878         case hullSimple:
1879         case hullEquation:
1880         case hullMultline:
1881         case hullGather:
1882         case hullRegexp:
1883                 return 0;
1884
1885         case hullEqnArray:
1886                 return 5;
1887
1888         case hullAlign:
1889                 alignInterSpace = 20;
1890                 break;
1891         case hullAlignAt:
1892                 alignInterSpace = 0;
1893                 break;
1894         case hullXAlignAt:
1895                 alignInterSpace = 40;
1896                 break;
1897         case hullXXAlignAt:
1898         case hullFlAlign:
1899                 alignInterSpace = 60;
1900                 break;
1901         }
1902         return (col % 2) ? alignInterSpace : 0;
1903 }
1904
1905
1906 } // namespace lyx