src/mathed/InsetMathGrid.cpp

   1 /**
   2  * \file InsetMathGrid.cpp
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author André Pönitz
   7  *
   8  * Full author contact details are available in file CREDITS.
   9  */
  10
  11 #include <config.h>
  12 #include <algorithm>
  13
  14 #include "InsetMathGrid.h"
  15
  16 #include "InsetMathUnknown.h"
  17 #include "MathData.h"
  18 #include "MathParser.h"
  19 #include "MathStream.h"
  20 #include "MetricsInfo.h"
  21
  22 #include "Buffer.h"
  23 #include "BufferParams.h"
  24 #include "BufferView.h"
  25 #include "CoordCache.h"
  26 #include "Cursor.h"
  27 #include "CutAndPaste.h"
  28 #include "FuncRequest.h"
  29 #include "FuncStatus.h"
  30 #include "LaTeXFeatures.h"
  31 #include "TexRow.h"
  32
  33 #include "frontends/Clipboard.h"
  34 #include "frontends/Painter.h"
  35
  36 #include "support/debug.h"
  37 #include "support/docstream.h"
  38 #include "support/gettext.h"
  39 #include "support/lstrings.h"
  40 #include "support/lassert.h"
  41
  42 #include <sstream>
  43
  44 using namespace std;
  45 using namespace lyx::support;
  46
  47
  48
  49 namespace lyx {
  50
  51 static docstring verboseHLine(int n)
  52 {
  53         docstring res;
  54         for (int i = 0; i < n; ++i)
  55                 res += "\\hline";
  56         if (n)
  57                 res += ' ';
  58         return res;
  59 }
  60
  61
  62 static int extractInt(istream & is)
  63 {
  64         int num = 1;
  65         is >> num;
  66         return (num == 0) ? 1 : num;
  67 }
  68
  69
  70 static void resetGrid(InsetMathGrid & grid)
  71 {
  72         while (grid.ncols() > 1)
  73                 grid.delCol(grid.ncols() - 1);
  74         while (grid.nrows() > 1)
  75                 grid.delRow(grid.nrows() - 1);
  76         grid.cell(0).erase(0, grid.cell(0).size());
  77         grid.setDefaults();
  78 }
  79
  80
  81
  82 //////////////////////////////////////////////////////////////
  83
  84
  85 InsetMathGrid::CellInfo::CellInfo()
  86         : multi(CELL_NORMAL)
  87 {}
  88
  89
  90
  91 //////////////////////////////////////////////////////////////
  92
  93
  94 InsetMathGrid::RowInfo::RowInfo()
  95         : descent(0), ascent(0), lines(0), skip(0),
  96           allow_newpage(true)
  97 {}
  98
  99
 100
 101 int InsetMathGrid::RowInfo::skipPixels(MetricsInfo const & mi) const
 102 {
 103         return mi.base.inPixels(crskip);
 104 }
 105
 106
 107
 108 //////////////////////////////////////////////////////////////
 109
 110
 111 InsetMathGrid::ColInfo::ColInfo()
 112         : align('c'), width(0), offset(0), lines(0), skip(0)
 113 {}
 114
 115
 116 //////////////////////////////////////////////////////////////
 117
 118
 119 InsetMathGrid::InsetMathGrid(Buffer * buf)
 120         : InsetMathNest(buf, 1),
 121           rowinfo_(1 + 1),
 122                 colinfo_(1 + 1),
 123                 cellinfo_(1),
 124                 v_align_('c')
 125 {
 126         setDefaults();
 127 }
 128
 129
 130 InsetMathGrid::InsetMathGrid(Buffer * buf, col_type m, row_type n)
 131         : InsetMathNest(buf, m * n),
 132           rowinfo_(n + 1),
 133                 colinfo_(m + 1),
 134                 cellinfo_(m * n),
 135                 v_align_('c')
 136 {
 137         setDefaults();
 138 }
 139
 140
 141 InsetMathGrid::InsetMathGrid(Buffer * buf, col_type m, row_type n, char v,
 142         docstring const & h)
 143         : InsetMathNest(buf, m * n),
 144           rowinfo_(n + 1),
 145           colinfo_(m + 1),
 146                 cellinfo_(m * n),
 147                 v_align_(v)
 148 {
 149         setDefaults();
 150         setVerticalAlignment(v);
 151         setHorizontalAlignments(h);
 152 }
 153
 154
 155 Inset * InsetMathGrid::clone() const
 156 {
 157         return new InsetMathGrid(*this);
 158 }
 159
 160
 161 idx_type InsetMathGrid::index(row_type row, col_type col) const
 162 {
 163         return col + ncols() * row;
 164 }
 165
 166
 167 void InsetMathGrid::setDefaults()
 168 {
 169         if (ncols() <= 0)
 170                 lyxerr << "positive number of columns expected" << endl;
 171         //if (nrows() <= 0)
 172         //      lyxerr << "positive number of rows expected" << endl;
 173         for (col_type col = 0; col < ncols(); ++col) {
 174                 colinfo_[col].align = defaultColAlign(col);
 175                 colinfo_[col].skip  = defaultColSpace(col);
 176                 colinfo_[col].special.clear();
 177         }
 178         for (idx_type idx = 0; idx < nargs(); ++idx)
 179                 cellinfo_[idx].multi = CELL_NORMAL;
 180 }
 181
 182
 183 bool InsetMathGrid::interpretString(Cursor & cur, docstring const & str)
 184 {
 185         if (str == "\\hline") {
 186                 FuncRequest fr = FuncRequest(LFUN_TABULAR_FEATURE, "add-hline-above");
 187                 FuncStatus status;
 188                 if (getStatus(cur, fr, status)) {
 189                         if (status.enabled()) {
 190                                 rowinfo_[cur.row()].lines++;
 191                                 return true;
 192                         }
 193                 }
 194         }
 195         return InsetMathNest::interpretString(cur, str);
 196 }
 197
 198
 199 void InsetMathGrid::setHorizontalAlignments(docstring const & hh)
 200 {
 201         col_type col = 0;
 202         for (docstring::const_iterator it = hh.begin(); it != hh.end(); ++it) {
 203                 char_type c = *it;
 204                 if (c == '|') {
 205                         colinfo_[col].lines++;
 206                 } else if ((c == 'p' || c == 'm' || c == 'b'||
 207                             c == '!' || c == '@' || c == '>' || c == '<') &&
 208                            it + 1 != hh.end() && *(it + 1) == '{') {
 209                         // @{decl.} and p{width} are standard LaTeX, the
 210                         // others are extensions by array.sty
 211                         bool const newcolumn = c == 'p' || c == 'm' || c == 'b';
 212                         if (newcolumn) {
 213                                 // this declares a new column
 214                                 if (col >= ncols())
 215                                         // Only intercolumn stuff is allowed
 216                                         // in the last dummy column
 217                                         break;
 218                                 colinfo_[col].align = 'l';
 219                         } else {
 220                                 // this is intercolumn stuff
 221                                 if (colinfo_[col].special.empty())
 222                                         // Overtake possible lines
 223                                         colinfo_[col].special = docstring(colinfo_[col].lines, '|');
 224                         }
 225                         int brace_open = 0;
 226                         int brace_close = 0;
 227                         while (it != hh.end()) {
 228                                 c = *it;
 229                                 colinfo_[col].special += c;
 230                                 if (c == '{')
 231                                         ++brace_open;
 232                                 else if (c == '}')
 233                                         ++brace_close;
 234                                 ++it;
 235                                 if (brace_open > 0 && brace_open == brace_close)
 236                                         break;
 237                         }
 238                         --it;
 239                         if (newcolumn) {
 240                                 colinfo_[col].lines = count(
 241                                         colinfo_[col].special.begin(),
 242                                         colinfo_[col].special.end(), '|');
 243                                 LYXERR(Debug::MATHED, "special column separator: `"
 244                                         << to_utf8(colinfo_[col].special) << '\'');
 245                                 ++col;
 246                                 colinfo_[col].lines = 0;
 247                                 colinfo_[col].special.clear();
 248                         }
 249                 } else if (col >= ncols()) {
 250                         // Only intercolumn stuff is allowed in the last
 251                         // dummy column
 252                         break;
 253                 } else if (c == 'c' || c == 'l' || c == 'r') {
 254                         colinfo_[col].align = static_cast<char>(c);
 255                         if (!colinfo_[col].special.empty()) {
 256                                 colinfo_[col].special += c;
 257                                 colinfo_[col].lines = count(
 258                                                 colinfo_[col].special.begin(),
 259                                                 colinfo_[col].special.end(), '|');
 260                                 LYXERR(Debug::MATHED, "special column separator: `"
 261                                         << to_utf8(colinfo_[col].special) << '\'');
 262                         }
 263                         ++col;
 264                         colinfo_[col].lines = 0;
 265                         colinfo_[col].special.clear();
 266                 } else {
 267                         lyxerr << "unknown column separator: '" << c << "'" << endl;
 268                 }
 269         }
 270
 271 /*
 272         col_type n = hh.size();
 273         if (n > ncols())
 274                 n = ncols();
 275         for (col_type col = 0; col < n; ++col)
 276                 colinfo_[col].align = hh[col];
 277 */
 278 }
 279
 280
 281 col_type InsetMathGrid::guessColumns(docstring const & hh)
 282 {
 283         col_type col = 0;
 284         for (char_type const c : hh)
 285                 if (c == 'c' || c == 'l' || c == 'r'||
 286                     c == 'p' || c == 'm' || c == 'b')
 287                         ++col;
 288         // let's have at least one column, even if we did not recognize its
 289         // alignment
 290         if (col == 0)
 291                 col = 1;
 292         return col;
 293 }
 294
 295
 296 void InsetMathGrid::setHorizontalAlignment(char h, col_type col)
 297 {
 298         colinfo_[col].align = h;
 299         if (!colinfo_[col].special.empty()) {
 300                 char_type & c = colinfo_[col].special[colinfo_[col].special.size() - 1];
 301                 if (c == 'l' || c == 'c' || c == 'r')
 302                         c = h;
 303         }
 304         // FIXME: Change alignment of p, m and b columns, too
 305 }
 306
 307
 308 char InsetMathGrid::horizontalAlignment(col_type col) const
 309 {
 310         return colinfo_[col].align;
 311 }
 312
 313
 314 docstring InsetMathGrid::horizontalAlignments() const
 315 {
 316         docstring res;
 317         for (col_type col = 0; col < ncols(); ++col) {
 318                 if (colinfo_[col].special.empty()) {
 319                         res += docstring(colinfo_[col].lines, '|');
 320                         res += colinfo_[col].align;
 321                 } else
 322                         res += colinfo_[col].special;
 323         }
 324         if (colinfo_[ncols()].special.empty())
 325                 return res + docstring(colinfo_[ncols()].lines, '|');
 326         return res + colinfo_[ncols()].special;
 327 }
 328
 329
 330 void InsetMathGrid::setVerticalAlignment(char c)
 331 {
 332         v_align_ = c;
 333 }
 334
 335
 336 char InsetMathGrid::verticalAlignment() const
 337 {
 338         return v_align_;
 339 }
 340
 341
 342 col_type InsetMathGrid::ncols() const
 343 {
 344         return colinfo_.size() - 1;
 345 }
 346
 347
 348 row_type InsetMathGrid::nrows() const
 349 {
 350         return rowinfo_.size() - 1;
 351 }
 352
 353
 354 col_type InsetMathGrid::col(idx_type idx) const
 355 {
 356         return idx % ncols();
 357 }
 358
 359
 360 row_type InsetMathGrid::row(idx_type idx) const
 361 {
 362         return idx / ncols();
 363 }
 364
 365
 366 col_type InsetMathGrid::ncellcols(idx_type idx) const
 367 {
 368         col_type cols = 1;
 369         if (cellinfo_[idx].multi == CELL_NORMAL)
 370                 return cols;
 371         // If the cell at idx is already CELL_PART_OF_MULTICOLUMN we return
 372         // the number of remaining columns, not the ones of the complete
 373         // multicolumn cell. This makes it possible to always go to the next
 374         // cell with idx + ncellcols(idx) - 1.
 375         row_type const r = row(idx);
 376         while (idx+cols < nargs() && row(idx+cols) == r &&
 377                cellinfo_[idx+cols].multi == CELL_PART_OF_MULTICOLUMN)
 378                 cols++;
 379         return cols;
 380 }
 381
 382
 383 void InsetMathGrid::vcrskip(Length const & crskip, row_type row)
 384 {
 385         rowinfo_[row].crskip = crskip;
 386 }
 387
 388
 389 Length InsetMathGrid::vcrskip(row_type row) const
 390 {
 391         return rowinfo_[row].crskip;
 392 }
 393
 394
 395 void InsetMathGrid::metrics(MetricsInfo & mi, Dimension & dim) const
 396 {
 397         // let the cells adjust themselves
 398         for (idx_type i = 0; i < nargs(); ++i) {
 399                 if (cellinfo_[i].multi != CELL_PART_OF_MULTICOLUMN) {
 400                         Dimension dimc;
 401                         // the 'false' is to make sure that the cell is tall enough
 402                         cell(i).metrics(mi, dimc, false);
 403                 }
 404         }
 405
 406         BufferView & bv = *mi.base.bv;
 407
 408         // compute absolute sizes of vertical structure
 409         for (row_type row = 0; row < nrows(); ++row) {
 410                 int asc  = 0;
 411                 int desc = 0;
 412                 for (col_type col = 0; col < ncols(); ++col) {
 413                         idx_type const i = index(row, col);
 414                         if (cellinfo_[i].multi != CELL_PART_OF_MULTICOLUMN) {
 415                                 Dimension const & dimc = cell(i).dimension(bv);
 416                                 asc  = max(asc,  dimc.asc);
 417                                 desc = max(desc, dimc.des);
 418                         }
 419                 }
 420                 rowinfo_[row].ascent  = asc;
 421                 rowinfo_[row].descent = desc;
 422         }
 423         rowinfo_[nrows()].ascent  = 0;
 424         rowinfo_[nrows()].descent = 0;
 425
 426         // compute vertical offsets
 427         rowinfo_[0].offset[&bv] = 0;
 428         for (row_type row = 1; row <= nrows(); ++row) {
 429                 rowinfo_[row].offset[&bv] =
 430                         rowinfo_[row - 1].offset[&bv] +
 431                         rowinfo_[row - 1].descent +
 432                         rowinfo_[row - 1].skipPixels(mi) +
 433                         rowsep() +
 434                         rowinfo_[row].lines * hlinesep() +
 435                         rowinfo_[row].ascent;
 436         }
 437
 438         // adjust vertical offset
 439         int h = 0;
 440         switch (v_align_) {
 441                 case 't':
 442                         h = 0;
 443                         break;
 444                 case 'b':
 445                         h = rowinfo_[nrows() - 1].offset[&bv];
 446                         break;
 447                 default:
 448                         h = rowinfo_[nrows() - 1].offset[&bv] / 2;
 449         }
 450         for (row_type row = 0; row <= nrows(); ++row)
 451                 rowinfo_[row].offset[&bv] -= h;
 452
 453
 454         // multicolumn cell widths, as a map from first column to width in a
 455         // vector of last columns.
 456         // This is only used if the grid has more than one row, since for
 457         // one-row grids multicolumn cells do not need special handling
 458         vector<map<col_type, int> > mcolwidths(ncols());
 459
 460         // compute absolute sizes of horizontal structure
 461         for (col_type col = 0; col < ncols(); ++col) {
 462                 int wid = 0;
 463                 for (row_type row = 0; row < nrows(); ++row) {
 464                         idx_type const i = index(row, col);
 465                         if (cellinfo_[i].multi != CELL_PART_OF_MULTICOLUMN) {
 466                                 int const w = cell(i).dimension(bv).wid;
 467                                 col_type const cols = ncellcols(i);
 468                                 if (cols > 1 && nrows() > 1) {
 469                                         col_type last = col+cols-1;
 470                                         LASSERT(last < ncols(), last = ncols()-1);
 471                                         map<col_type, int>::iterator it =
 472                                                 mcolwidths[last].find(col);
 473                                         if (it == mcolwidths[last].end())
 474                                                 mcolwidths[last][col] = w;
 475                                         else
 476                                                 it->second = max(it->second, w);
 477                                 } else
 478                                         wid = max(wid, w);
 479                         }
 480                 }
 481                 colinfo_[col].width = wid;
 482         }
 483         colinfo_[ncols()].width  = 0;
 484
 485         // compute horizontal offsets
 486         colinfo_[0].offset = border() + colinfo_[0].lines * vlinesep();;
 487         for (col_type col = 1; col <= ncols(); ++col) {
 488                 colinfo_[col].offset =
 489                         colinfo_[col - 1].offset +
 490                         colinfo_[col - 1].width +
 491                         displayColSpace(col - 1) +
 492                         colsep() +
 493                         colinfo_[col].lines * vlinesep();
 494         }
 495
 496         // increase column widths for multicolumn cells if needed
 497         // FIXME: multicolumn lines are not yet considered
 498         for (col_type last = 0; last < ncols(); ++last) {
 499                 map<col_type, int> const & widths = mcolwidths[last];
 500                 // We increase the width of the last column of the multicol
 501                 // cell (some sort of left alignment). Since we iterate through
 502                 // the last and the first columns from left to right, we ensure
 503                 // that increased widths of previous columns are correctly
 504                 // taken into account for later columns, thus preventing
 505                 // unneeded width increasing.
 506                 for (map<col_type, int>::const_iterator it = widths.begin();
 507                      it != widths.end(); ++it) {
 508                         int const wid = it->second;
 509                         col_type const first = it->first;
 510                         int const nextoffset =
 511                                 colinfo_[first].offset +
 512                                 wid +
 513                                 displayColSpace(last) +
 514                                 colsep() +
 515                                 colinfo_[last+1].lines * vlinesep();
 516                         int const dx = nextoffset - colinfo_[last+1].offset;
 517                         if (dx > 0) {
 518                                 colinfo_[last].width += dx;
 519                                 for (col_type col = last + 1; col <= ncols(); ++col)
 520                                         colinfo_[col].offset += dx;
 521                         }
 522                 }
 523         }
 524
 525
 526         dim.wid = colinfo_[ncols() - 1].offset
 527                 + colinfo_[ncols() - 1].width
 528                 + vlinesep() * colinfo_[ncols()].lines
 529                 + border();
 530
 531         dim.asc = - rowinfo_[0].offset[&bv]
 532                 + rowinfo_[0].ascent
 533                 + hlinesep() * rowinfo_[0].lines
 534                 + border();
 535
 536         dim.des = rowinfo_[nrows() - 1].offset[&bv]
 537                 + rowinfo_[nrows() - 1].descent
 538                 + hlinesep() * rowinfo_[nrows()].lines
 539                 + border() + 1;
 540
 541
 542 /*
 543         // Increase ws_[i] for 'R' columns (except the first one)
 544         for (int i = 1; i < nc_; ++i)
 545                 if (align[i] == 'R')
 546                         ws_[i] += 10 * df_width;
 547         // Increase ws_[i] for 'C' column
 548         if (align[0] == 'C')
 549                 if (ws_[0] < 7 * workwidth / 8)
 550                         ws_[0] = 7 * workwidth / 8;
 551
 552         // Adjust local tabs
 553         width = colsep();
 554         for (cxrow = row_.begin(); cxrow; ++cxrow) {
 555                 int rg = COLSEP;
 556                 int lf = 0;
 557                 for (int i = 0; i < nc_; ++i) {
 558                         bool isvoid = false;
 559                         if (cxrow->getTab(i) <= 0) {
 560                                 cxrow->setTab(i, df_width);
 561                                 isvoid = true;
 562                         }
 563                         switch (align[i]) {
 564                         case 'l':
 565                                 lf = 0;
 566                                 break;
 567                         case 'c':
 568                                 lf = (ws_[i] - cxrow->getTab(i))/2;
 569                                 break;
 570                         case 'r':
 571                         case 'R':
 572                                 lf = ws_[i] - cxrow->getTab(i);
 573                                 break;
 574                         case 'C':
 575                                 if (cxrow == row_.begin())
 576                                         lf = 0;
 577                                 else if (cxrow.is_last())
 578                                         lf = ws_[i] - cxrow->getTab(i);
 579                                 else
 580                                         lf = (ws_[i] - cxrow->getTab(i))/2;
 581                                 break;
 582                         }
 583                         int const ww = (isvoid) ? lf : lf + cxrow->getTab(i);
 584                         cxrow->setTab(i, lf + rg);
 585                         rg = ws_[i] - ww + colsep();
 586                         if (cxrow == row_.begin())
 587                                 width += ws_[i] + colsep();
 588                 }
 589                 cxrow->setBaseline(cxrow->getBaseline() - ascent);
 590         }
 591 */
 592         dim.wid += leftMargin() + rightMargin();
 593 }
 594
 595
 596 int InsetMathGrid::vLineHOffset(col_type col, unsigned int line) const
 597 {
 598         if (col < ncols())
 599                 return leftMargin() + colinfo_[col].offset
 600                         - (colinfo_[col].lines - line - 1) * vlinesep()
 601                         - vlinesep()/2 - colsep()/2;
 602         else {
 603                 LASSERT(col == ncols(), return 0);
 604                 return leftMargin() + colinfo_[col-1].offset + colinfo_[col-1].width
 605                         + line * vlinesep()
 606                         + vlinesep()/2 + colsep()/2;
 607         }
 608 }
 609
 610
 611 int InsetMathGrid::hLineVOffset(BufferView const & bv, row_type row,
 612                                 unsigned int line) const
 613 {
 614         return rowinfo_[row].offset[&bv]
 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(bv, idx));
 630
 631                         row_type r = row(idx);
 632                         int const yy1 = y + hLineVOffset(bv, r, 0);
 633                         int const yy2 = y + hLineVOffset(bv, 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(bv, r, i);
 655                         pi.pain.line(xx1, yy, xx2, yy, Color_foreground);
 656                 }
 657         }
 658 }
 659
 660
 661 void InsetMathGrid::metricsT(TextMetricsInfo const & /*mi*/, Dimension & /*dim*/) const
 662 {
 663 // FIXME: this does not compile anymore with offset being a map
 664 // It is not worth fixing it at this point since the code is basically dead.
 665 #if 0
 666         // let the cells adjust themselves
 667         for (idx_type i = 0; i < nargs(); ++i)
 668                 if (cellinfo_[i].multi != CELL_PART_OF_MULTICOLUMN)
 669                         cell(i).metricsT(mi, dim);
 670
 671         // compute absolute sizes of vertical structure
 672         for (row_type row = 0; row < nrows(); ++row) {
 673                 int asc  = 0;
 674                 int desc = 0;
 675                 for (col_type col = 0; col < ncols(); ++col) {
 676                         idx_type const i = index(row, col);
 677                         if (cellinfo_[i].multi != CELL_PART_OF_MULTICOLUMN) {
 678                                 //MathData const & c = cell(i);
 679                                 // FIXME: BROKEN!
 680                                 Dimension dimc;
 681                                 asc  = max(asc,  dimc.ascent());
 682                                 desc = max(desc, dimc.descent());
 683                         }
 684                 }
 685                 rowinfo_[row].ascent  = asc;
 686                 rowinfo_[row].descent = desc;
 687         }
 688         rowinfo_[nrows()].ascent  = 0;
 689         rowinfo_[nrows()].descent = 0;
 690
 691         // compute vertical offsets
 692         rowinfo_[0].offset[&bv] = 0;
 693         for (row_type row = 1; row <= nrows(); ++row) {
 694                 rowinfo_[row].offset[&bv]  =
 695                         rowinfo_[row - 1].offset  +
 696                         rowinfo_[row - 1].descent +
 697                         //rowinfo_[row - 1].skipPixels(mi) +
 698                         1 + //rowsep() +
 699                         //rowinfo_[row].lines * hlinesep() +
 700                         rowinfo_[row].ascent;
 701         }
 702
 703         // adjust vertical offset
 704         int h = 0;
 705         switch (v_align_) {
 706                 case 't':
 707                         h = 0;
 708                         break;
 709                 case 'b':
 710                         h = rowinfo_[nrows() - 1].offset;
 711                         break;
 712                 default:
 713                         h = rowinfo_[nrows() - 1].offset / 2;
 714         }
 715         for (row_type row = 0; row <= nrows(); ++row)
 716                 rowinfo_[row].offset -= h;
 717
 718
 719         // compute absolute sizes of horizontal structure
 720         for (col_type col = 0; col < ncols(); ++col) {
 721                 int wid = 0;
 722                 for (row_type row = 0; row < nrows(); ++row) {
 723                         // FIXME: BROKEN!
 724                         //idx_type const i = index(row, col);
 725                         //if (cellinfo_[i].multi != CELL_PART_OF_MULTICOLUMN)
 726                         //      wid = max(wid, cell(i).width());
 727                 }
 728                 colinfo_[col].width = wid;
 729         }
 730         colinfo_[ncols()].width  = 0;
 731
 732         // compute horizontal offsets
 733         colinfo_[0].offset = border();
 734         for (col_type col = 1; col <= ncols(); ++col) {
 735                 colinfo_[col].offset =
 736                         colinfo_[col - 1].offset +
 737                         colinfo_[col - 1].width +
 738                         displayColSpace(col - 1) +
 739                         1 ; //colsep() +
 740                         //colinfo_[col].lines * vlinesep();
 741         }
 742
 743
 744         dim.wid  =  colinfo_[ncols() - 1].offset
 745                        + colinfo_[ncols() - 1].width
 746                  //+ vlinesep() * colinfo_[ncols()].lines
 747                        + 2;
 748
 749         dim.asc  = -rowinfo_[0].offset
 750                        + rowinfo_[0].ascent
 751                  //+ hlinesep() * rowinfo_[0].lines
 752                        + 1;
 753
 754         dim.des  =  rowinfo_[nrows() - 1].offset
 755                        + rowinfo_[nrows() - 1].descent
 756                  //+ hlinesep() * rowinfo_[nrows()].lines
 757                        + 1;
 758 #endif
 759 }
 760
 761
 762 void InsetMathGrid::drawT(TextPainter & /*pain*/, int /*x*/, int /*y*/) const
 763 {
 764 //      for (idx_type idx = 0; idx < nargs(); ++idx)
 765 //              if (cellinfo_[idx].multi != CELL_PART_OF_MULTICOLUMN)
 766 //                      cell(idx).drawT(pain, x + cellXOffset(idx), y + cellYOffset(idx));
 767 }
 768
 769
 770 void InsetMathGrid::updateBuffer(ParIterator const & it, UpdateType utype, bool const deleted)
 771 {
 772         // pass down
 773         for (idx_type idx = 0; idx < nargs(); ++idx)
 774                 if (cellinfo_[idx].multi != CELL_PART_OF_MULTICOLUMN)
 775                         cell(idx).updateBuffer(it, utype, deleted);
 776 }
 777
 778
 779 docstring InsetMathGrid::eolString(row_type row, bool fragile,
 780                 bool /*latex*/, bool last_eoln) const
 781 {
 782         docstring eol;
 783
 784         if (!rowinfo_[row].crskip.zero())
 785                 eol += '[' + from_utf8(rowinfo_[row].crskip.asLatexString()) + ']';
 786         else if(!rowinfo_[row].allow_newpage)
 787                 eol += '*';
 788
 789         // make sure an upcoming '[' does not break anything
 790         if (row + 1 < nrows()) {
 791                 MathData const & c = cell(index(row + 1, 0));
 792                 if (!c.empty() && c.front()->getChar() == '[')
 793                         //eol += "[0pt]";
 794                         eol += "{}";
 795         }
 796
 797         // only add \\ if necessary
 798         if (eol.empty() && row + 1 == nrows() && (nrows() == 1 || !last_eoln))
 799                 return docstring();
 800
 801         return (fragile ? "\\protect\\\\" : "\\\\") + eol;
 802 }
 803
 804
 805 docstring InsetMathGrid::eocString(col_type col, col_type lastcol) const
 806 {
 807         if (col + 1 == lastcol)
 808                 return docstring();
 809         return from_ascii(" & ");
 810 }
 811
 812
 813 void InsetMathGrid::addRow(row_type row)
 814 {
 815         rowinfo_.insert(rowinfo_.begin() + row + 1, RowInfo());
 816         cells_.insert
 817                 (cells_.begin() + (row + 1) * ncols(), ncols(), MathData(buffer_));
 818         cellinfo_.insert
 819                 (cellinfo_.begin() + (row + 1) * ncols(), ncols(), CellInfo());
 820 }
 821
 822
 823 void InsetMathGrid::delRow(row_type row)
 824 {
 825         if (nrows() == 1)
 826                 return;
 827
 828         cells_type::iterator it = cells_.begin() + row * ncols();
 829         cells_.erase(it, it + ncols());
 830
 831         vector<CellInfo>::iterator jt = cellinfo_.begin() + row * ncols();
 832         cellinfo_.erase(jt, jt + ncols());
 833
 834         rowinfo_.erase(rowinfo_.begin() + row);
 835 }
 836
 837
 838 void InsetMathGrid::copyRow(row_type row)
 839 {
 840         addRow(row);
 841         for (col_type col = 0; col < ncols(); ++col) {
 842                 cells_[(row + 1) * ncols() + col] = cells_[row * ncols() + col];
 843                 // copying the cell does not set the buffer
 844                 cells_[(row + 1) * ncols() + col].setBuffer(*buffer_);
 845         }
 846 }
 847
 848
 849 void InsetMathGrid::swapRow(row_type row)
 850 {
 851         if (nrows() == 1)
 852                 return;
 853         if (row + 1 == nrows())
 854                 --row;
 855         for (col_type col = 0; col < ncols(); ++col)
 856                 swap(cells_[row * ncols() + col], cells_[(row + 1) * ncols() + col]);
 857 }
 858
 859
 860 void InsetMathGrid::addCol(col_type newcol)
 861 {
 862         const col_type nc = ncols();
 863         const row_type nr = nrows();
 864         cells_type new_cells((nc + 1) * nr);
 865         vector<CellInfo> new_cellinfo((nc + 1) * nr);
 866
 867         for (row_type row = 0; row < nr; ++row)
 868                 for (col_type col = 0; col < nc; ++col) {
 869                         new_cells[row * (nc + 1) + col + (col >= newcol)]
 870                                 = cells_[row * nc + col];
 871                         new_cellinfo[row * (nc + 1) + col + (col >= newcol)]
 872                                 = cellinfo_[row * nc + col];
 873                 }
 874         swap(cells_, new_cells);
 875         // copying cells loses the buffer reference
 876         setBuffer(*buffer_);
 877         swap(cellinfo_, new_cellinfo);
 878
 879         ColInfo inf;
 880         inf.skip  = defaultColSpace(newcol);
 881         inf.align = defaultColAlign(newcol);
 882         colinfo_.insert(colinfo_.begin() + newcol, inf);
 883 }
 884
 885
 886 void InsetMathGrid::delCol(col_type col)
 887 {
 888         if (ncols() == 1)
 889                 return;
 890
 891         cells_type tmpcells;
 892         vector<CellInfo> tmpcellinfo;
 893         for (col_type i = 0; i < nargs(); ++i)
 894                 if (i % ncols() != col) {
 895                         tmpcells.push_back(cells_[i]);
 896                         tmpcellinfo.push_back(cellinfo_[i]);
 897                 }
 898         swap(cells_, tmpcells);
 899         // copying cells loses the buffer reference
 900         setBuffer(*buffer_);
 901         swap(cellinfo_, tmpcellinfo);
 902
 903         colinfo_.erase(colinfo_.begin() + col);
 904 }
 905
 906
 907 void InsetMathGrid::copyCol(col_type col)
 908 {
 909         addCol(col+1);
 910         for (row_type row = 0; row < nrows(); ++row) {
 911                 cells_[row * ncols() + col + 1] = cells_[row * ncols() + col];
 912                 // copying the cell does not set the buffer
 913                 cells_[row * ncols() + col + 1].setBuffer(*buffer_);
 914         }
 915 }
 916
 917
 918 void InsetMathGrid::swapCol(col_type col)
 919 {
 920         if (ncols() == 1)
 921                 return;
 922         if (col + 1 == ncols())
 923                 --col;
 924         for (row_type row = 0; row < nrows(); ++row)
 925                 swap(cells_[row * ncols() + col], cells_[row * ncols() + col + 1]);
 926 }
 927
 928
 929 int InsetMathGrid::cellXOffset(BufferView const & bv, idx_type idx) const
 930 {
 931         if (cellinfo_[idx].multi == CELL_PART_OF_MULTICOLUMN)
 932                 return 0;
 933         col_type c = col(idx);
 934         int x = colinfo_[c].offset;
 935         char align = displayColAlign(idx);
 936         Dimension const & celldim = cell(idx).dimension(bv);
 937         if (align == 'r' || align == 'R')
 938                 x += cellWidth(idx) - celldim.wid;
 939         if (align == 'c' || align == 'C')
 940                 x += (cellWidth(idx) - celldim.wid) / 2;
 941         return x;
 942 }
 943
 944
 945 int InsetMathGrid::cellYOffset(BufferView const & bv, idx_type idx) const
 946 {
 947         return rowinfo_[row(idx)].offset[&bv];
 948 }
 949
 950
 951 int InsetMathGrid::cellWidth(idx_type idx) const
 952 {
 953         switch (cellinfo_[idx].multi) {
 954         case CELL_NORMAL:
 955                 return colinfo_[col(idx)].width;
 956         case CELL_BEGIN_OF_MULTICOLUMN: {
 957                 col_type c1 = col(idx);
 958                 col_type c2 = c1 + ncellcols(idx);
 959                 return colinfo_[c2].offset
 960                         - colinfo_[c1].offset
 961                         - displayColSpace(c2)
 962                         - colsep()
 963                         - colinfo_[c2].lines * vlinesep();
 964         }
 965         case CELL_PART_OF_MULTICOLUMN:
 966                 return 0;
 967         }
 968         return 0;
 969 }
 970
 971
 972 bool InsetMathGrid::idxUpDown(Cursor & cur, bool up) const
 973 {
 974         if (up) {
 975                 if (cur.row() == 0)
 976                         return false;
 977                 cur.idx() -= ncols();
 978         } else {
 979                 if (cur.row() + 1 >= nrows())
 980                         return false;
 981                 cur.idx() += ncols();
 982         }
 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         // FIXME: this is only a workaround to avoid a crash if the inset
 989         // in not in coord cache. The best would be to force a FitCursor
 990         // operation.
 991         CoordCache::Arrays const & arraysCache = cur.bv().coordCache().arrays();
 992         if (arraysCache.has(&cur.cell()))
 993                 cur.pos() = cur.cell().x2pos(&cur.bv(), cur.x_target() - cur.cell().xo(cur.bv()));
 994         else
 995                 cur.pos() = 0;
 996         return true;
 997 }
 998
 999
1000 bool InsetMathGrid::idxBackward(Cursor & cur) const
1001 {
1002         // leave matrix if at the front edge
1003         if (cur.col() == 0)
1004                 return false;
1005         --cur.idx();
1006         // If we are in a multicolumn cell, move to the "real" cell
1007         while (cellinfo_[cur.idx()].multi == CELL_PART_OF_MULTICOLUMN) {
1008                 LASSERT(cur.idx() > 0, return false);
1009                 --cur.idx();
1010         }
1011         cur.pos() = cur.lastpos();
1012         return true;
1013 }
1014
1015
1016 bool InsetMathGrid::idxForward(Cursor & cur) const
1017 {
1018         // leave matrix if at the back edge
1019         if (cur.col() + 1 == ncols())
1020                 return false;
1021         ++cur.idx();
1022         // If we are in a multicolumn cell, move to the next cell
1023         while (cellinfo_[cur.idx()].multi == CELL_PART_OF_MULTICOLUMN) {
1024                 // leave matrix if at the back edge
1025                 if (cur.col() + 1 == ncols())
1026                         return false;
1027                 ++cur.idx();
1028         }
1029         cur.pos() = 0;
1030         return true;
1031 }
1032
1033
1034 idx_type InsetMathGrid::firstIdx() const
1035 {
1036         size_type idx = 0;
1037         switch (v_align_) {
1038                 case 't':
1039                         //idx = 0;
1040                         break;
1041                 case 'b':
1042                         idx = (nrows() - 1) * ncols();
1043                         break;
1044                 default:
1045                         idx = ((nrows() - 1) / 2) * ncols();
1046         }
1047         // If we are in a multicolumn cell, move to the "real" cell
1048         while (cellinfo_[idx].multi == CELL_PART_OF_MULTICOLUMN) {
1049                 LASSERT(idx > 0, return 0);
1050                 --idx;
1051         }
1052         return idx;
1053 }
1054
1055
1056 idx_type InsetMathGrid::lastIdx() const
1057 {
1058         size_type idx = 0;
1059         switch (v_align_) {
1060                 case 't':
1061                         idx = ncols() - 1;
1062                         break;
1063                 case 'b':
1064                         idx = nargs() - 1;
1065                         break;
1066                 default:
1067                         idx = ((nrows() - 1) / 2 + 1) * ncols() - 1;
1068         }
1069         // If we are in a multicolumn cell, move to the "real" cell
1070         while (cellinfo_[idx].multi == CELL_PART_OF_MULTICOLUMN) {
1071                 LASSERT(idx > 0, return false);
1072                 --idx;
1073         }
1074         return idx;
1075 }
1076
1077
1078 bool InsetMathGrid::idxDelete(idx_type & idx)
1079 {
1080         // nothing to do if we have just one row
1081         if (nrows() == 1)
1082                 return false;
1083
1084         // nothing to do if we are in the middle of the last row of the inset
1085         if (idx + ncols() > nargs())
1086                 return false;
1087
1088         // try to delete entire sequence of ncols() empty cells if possible
1089         for (idx_type i = idx; i < idx + ncols(); ++i)
1090                 if (!cell(i).empty())
1091                         return false;
1092
1093         // move cells if necessary
1094         for (idx_type i = index(row(idx), 0); i < idx; ++i)
1095                 swap(cell(i), cell(i + ncols()));
1096
1097         delRow(row(idx));
1098
1099         if (idx >= nargs())
1100                 idx = nargs() - 1;
1101
1102         // undo effect of Ctrl-Tab (i.e. pull next cell)
1103         //if (idx + 1 != nargs())
1104         //      cell(idx).swap(cell(idx + 1));
1105
1106         // we handled the event..
1107         return true;
1108 }
1109
1110
1111 // reimplement old behaviour when pressing Delete in the last position
1112 // of a cell
1113 void InsetMathGrid::idxGlue(idx_type idx)
1114 {
1115         col_type c = col(idx);
1116         if (c + 1 == ncols()) {
1117                 if (row(idx) + 1 != nrows()) {
1118                         for (col_type cc = 0; cc < ncols(); ++cc)
1119                                 cell(idx).append(cell(idx + cc + 1));
1120                         delRow(row(idx) + 1);
1121                 }
1122         } else {
1123                 idx_type idx_next = idx + 1;
1124                 while (idx_next < nargs() &&
1125                        cellinfo_[idx_next].multi == CELL_PART_OF_MULTICOLUMN)
1126                         ++idx_next;
1127                 if (idx_next < nargs())
1128                         cell(idx).append(cell(idx_next));
1129                 col_type oldcol = c + 1;
1130                 for (col_type cc = c + 2; cc < ncols(); ++cc)
1131                         cell(idx - oldcol + cc) = cell(idx - oldcol + 1 + cc);
1132                 cell(idx - c + ncols() - 1).clear();
1133         }
1134 }
1135
1136
1137 InsetMathGrid::RowInfo const & InsetMathGrid::rowinfo(row_type row) const
1138 {
1139         return rowinfo_[row];
1140 }
1141
1142
1143 InsetMathGrid::RowInfo & InsetMathGrid::rowinfo(row_type row)
1144 {
1145         return rowinfo_[row];
1146 }
1147
1148
1149 bool InsetMathGrid::idxBetween(idx_type idx, idx_type from, idx_type to) const
1150 {
1151         row_type const ri = row(idx);
1152         row_type const r1 = min(row(from), row(to));
1153         row_type const r2 = max(row(from), row(to));
1154         col_type const ci = col(idx);
1155         col_type const c1 = min(col(from), col(to));
1156         col_type const c2 = max(col(from), col(to));
1157         return r1 <= ri && ri <= r2 && c1 <= ci && ci <= c2;
1158 }
1159
1160
1161 void InsetMathGrid::normalize(NormalStream & os) const
1162 {
1163         os << "[grid ";
1164         for (row_type row = 0; row < nrows(); ++row) {
1165                 os << "[row ";
1166                 for (col_type col = 0; col < ncols(); ++col) {
1167                         idx_type const i = index(row, col);
1168                         switch (cellinfo_[i].multi) {
1169                         case CELL_NORMAL:
1170                                 os << "[cell " << cell(i) << ']';
1171                                 break;
1172                         case CELL_BEGIN_OF_MULTICOLUMN:
1173                                 os << "[cell colspan="
1174                                    << static_cast<int>(ncellcols(i)) << ' '
1175                                    << cell(i) << ']';
1176                                 break;
1177                         case CELL_PART_OF_MULTICOLUMN:
1178                                 break;
1179                         }
1180                 }
1181                 os << ']';
1182         }
1183         os << ']';
1184 }
1185
1186
1187 void InsetMathGrid::mathmlize(MathStream & ms) const
1188 {
1189         bool const havetable = nrows() > 1 || ncols() > 1;
1190         if (havetable)
1191                 ms << MTag("mtable");
1192         char const * const celltag = havetable ? "mtd" : "mrow";
1193         for (row_type row = 0; row < nrows(); ++row) {
1194                 if (havetable)
1195                         ms << MTag("mtr");
1196                 for (col_type col = 0; col < ncols(); ++col) {
1197                         idx_type const i = index(row, col);
1198                         if (cellinfo_[i].multi != CELL_PART_OF_MULTICOLUMN) {
1199                                 col_type const cellcols = ncellcols(i);
1200                                 ostringstream attr;
1201                                 if (havetable && cellcols > 1)
1202                                         attr << "colspan='" << cellcols << '\'';
1203                                 ms << MTag(celltag, attr.str());
1204                                 ms << cell(index(row, col));
1205                                 ms << ETag(celltag);
1206                         }
1207                 }
1208                 if (havetable)
1209                         ms << ETag("mtr");
1210         }
1211         if (havetable)
1212                 ms << ETag("mtable");
1213 }
1214
1215
1216 // FIXME XHTML
1217 // We need to do something about alignment here.
1218 void InsetMathGrid::htmlize(HtmlStream & os, string const & attrib) const
1219 {
1220         bool const havetable = nrows() > 1 || ncols() > 1;
1221         if (!havetable) {
1222                 os << cell(index(0, 0));
1223                 return;
1224         }
1225         os << MTag("table", attrib);
1226         for (row_type row = 0; row < nrows(); ++row) {
1227                 os << MTag("tr");
1228                 for (col_type col = 0; col < ncols(); ++col) {
1229                         idx_type const i = index(row, col);
1230                         if (cellinfo_[i].multi != CELL_PART_OF_MULTICOLUMN) {
1231                                 col_type const cellcols = ncellcols(i);
1232                                 ostringstream attr;
1233                                 if (cellcols > 1)
1234                                         attr << "colspan='" << cellcols << '\'';
1235                                 os << MTag("td", attr.str());
1236                                 os << cell(index(row, col));
1237                                 os << ETag("td");
1238                         }
1239                 }
1240                 os << ETag("tr");
1241         }
1242         os << ETag("table");
1243 }
1244
1245
1246 void InsetMathGrid::htmlize(HtmlStream & os) const
1247 {
1248         htmlize(os, "class='mathtable'");
1249 }
1250
1251
1252 void InsetMathGrid::validate(LaTeXFeatures & features) const
1253 {
1254         if (features.runparams().math_flavor == OutputParams::MathAsHTML
1255             && (nrows() > 1 || ncols() > 1)) {
1256                 // CSS taken from InsetMathCases
1257                 features.addCSSSnippet(
1258                         "table.mathtable{display: inline-block; text-align: center; border: none;"
1259                         "border-left: thin solid black; vertical-align: middle; padding-left: 0.5ex;}\n"
1260                         "table.mathtable td {text-align: left; border: none;}");
1261         }
1262         InsetMathNest::validate(features);
1263 }
1264
1265
1266 void InsetMathGrid::write(WriteStream & os) const
1267 {
1268         write(os, 0, 0, nrows(), ncols());
1269 }
1270
1271 void InsetMathGrid::write(WriteStream & os,
1272                           row_type beg_row, col_type beg_col,
1273                           row_type end_row, col_type end_col) const
1274 {
1275         MathEnsurer ensurer(os, false);
1276         docstring eol;
1277         for (row_type row = beg_row; row < end_row; ++row) {
1278                 os << verboseHLine(rowinfo_[row].lines);
1279                 // don't write & and empty cells at end of line,
1280                 // unless there are vertical lines
1281                 col_type lastcol = 0;
1282                 bool emptyline = true;
1283                 bool last_eoln = true;
1284                 for (col_type col = beg_col; col < end_col; ++col) {
1285                         idx_type const idx = index(row, col);
1286                         bool const empty_cell = cell(idx).empty();
1287                         if (!empty_cell || cellinfo_[idx].multi != CELL_NORMAL)
1288                                 last_eoln = false;
1289                         if (!empty_cell || cellinfo_[idx].multi != CELL_NORMAL ||
1290                             colinfo_[col + 1].lines) {
1291                                 lastcol = col + 1;
1292                                 emptyline = false;
1293                         }
1294                 }
1295                 for (col_type col = beg_col; col < end_col;) {
1296                         int nccols = 1;
1297                         idx_type const idx = index(row, col);
1298                         TexRow::RowEntry entry = TexRow::mathEntry(id(),idx);
1299                         os.texrow().start(entry);
1300                         if (col >= lastcol) {
1301                                 ++col;
1302                                 continue;
1303                         }
1304                         Changer dummy = os.changeRowEntry(entry);
1305                         if (cellinfo_[idx].multi == CELL_BEGIN_OF_MULTICOLUMN) {
1306                                 size_t s = col + 1;
1307                                 while (s < ncols() &&
1308                                        cellinfo_[index(row, s)].multi == CELL_PART_OF_MULTICOLUMN)
1309                                         s++;
1310                                 nccols = s - col;
1311                                 os << "\\multicolumn{" << nccols
1312                                    << "}{" << cellinfo_[idx].align
1313                                    << "}{";
1314                         }
1315                         os << cell(idx);
1316                         if (os.pendingBrace())
1317                                 ModeSpecifier specifier(os, TEXT_MODE);
1318                         if (cellinfo_[idx].multi == CELL_BEGIN_OF_MULTICOLUMN)
1319                                 os << '}';
1320                         os << eocString(col + nccols - 1, lastcol);
1321                         col += nccols;
1322                 }
1323                 eol = eolString(row, os.fragile(), os.latex(), last_eoln);
1324                 os << eol;
1325                 // append newline only if line wasn't completely empty
1326                 // and the formula is not written on a single line
1327                 bool const empty = emptyline && eol.empty();
1328                 if (!empty && nrows() > 1)
1329                         os << "\n";
1330         }
1331         // @TODO use end_row instead of nrows() ?
1332         docstring const s = verboseHLine(rowinfo_[nrows()].lines);
1333         if (!s.empty()) {
1334                 if (eol.empty()) {
1335                         if (os.fragile())
1336                                 os << "\\protect";
1337                         os << "\\\\";
1338                 }
1339                 os << s;
1340         }
1341 }
1342
1343
1344 int InsetMathGrid::colsep() const
1345 {
1346         return 6;
1347 }
1348
1349
1350 int InsetMathGrid::rowsep() const
1351 {
1352         return 6;
1353 }
1354
1355
1356 int InsetMathGrid::hlinesep() const
1357 {
1358         return 3;
1359 }
1360
1361
1362 int InsetMathGrid::vlinesep() const
1363 {
1364         return 3;
1365 }
1366
1367
1368 int InsetMathGrid::border() const
1369 {
1370         return 1;
1371 }
1372
1373
1374 void InsetMathGrid::splitCell(Cursor & cur)
1375 {
1376         if (cur.idx() == cur.lastidx())
1377                 return;
1378         MathData ar = cur.cell();
1379         ar.erase(0, cur.pos());
1380         cur.cell().erase(cur.pos(), cur.lastpos());
1381         ++cur.idx();
1382         while (cur.idx() << nargs() &&
1383                cellinfo_[cur.idx()].multi == CELL_BEGIN_OF_MULTICOLUMN)
1384                 ++cur.idx();
1385         cur.pos() = 0;
1386         cur.cell().insert(0, ar);
1387 }
1388
1389
1390 char InsetMathGrid::displayColAlign(idx_type idx) const
1391 {
1392         if (cellinfo_[idx].multi == CELL_BEGIN_OF_MULTICOLUMN) {
1393                 // align may also contain lines like "||r|", so this is
1394                 // not complete, but we catch at least the simple cases.
1395                 if (cellinfo_[idx].align == "c")
1396                         return 'c';
1397                 if (cellinfo_[idx].align == "l")
1398                         return 'l';
1399                 if (cellinfo_[idx].align == "r")
1400                         return 'r';
1401         }
1402         return colinfo_[col(idx)].align;
1403 }
1404
1405
1406 int InsetMathGrid::displayColSpace(col_type col) const
1407 {
1408         return colinfo_[col].skip;
1409 }
1410
1411 void InsetMathGrid::doDispatch(Cursor & cur, FuncRequest & cmd)
1412 {
1413         //lyxerr << "*** InsetMathGrid: request: " << cmd << endl;
1414
1415         Parse::flags parseflg = Parse::QUIET | Parse::USETEXT;
1416
1417         FuncCode const act = cmd.action();
1418         switch (act) {
1419
1420         // insert file functions
1421         case LFUN_LINE_DELETE_FORWARD:
1422                 cur.recordUndoInset();
1423                 //autocorrect_ = false;
1424                 //macroModeClose();
1425                 //if (selection_) {
1426                 //      selDel();
1427                 //      break;
1428                 //}
1429                 if (nrows() > 1)
1430                         delRow(cur.row());
1431                 if (cur.idx() > cur.lastidx())
1432                         cur.idx() = cur.lastidx();
1433                 if (cur.pos() > cur.lastpos())
1434                         cur.pos() = cur.lastpos();
1435                 break;
1436
1437         case LFUN_CELL_SPLIT:
1438                 cur.recordUndo();
1439                 splitCell(cur);
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() != MATH_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 startcol = col(cur.idx());
1628                         row_type startrow = cur.row();
1629                         col_type oldncols = ncols();
1630                         col_type numcols =
1631                                 min(grid.ncols(), ncols() - startcol);
1632                         row_type const numrows =
1633                                 min(grid.nrows(), nrows() - cur.row());
1634                         for (row_type r = 0; r < numrows; ++r) {
1635                                 for (col_type c = 0; c < numcols; ++c) {
1636                                         idx_type i = index(r + startrow, c + startcol);
1637                                         pos_type const ipos = min(cur.pos(), pos_type(cell(i).size()));
1638                                         cell(i).insert(ipos, grid.cell(grid.index(r, c)));
1639                                 }
1640                                 if (hline_enabled)
1641                                         rowinfo_[r].lines += grid.rowinfo_[r].lines;
1642                                 else {
1643                                         for (unsigned int l = 0; l < grid.rowinfo_[r].lines; ++l) {
1644                                                 idx_type i = index(r + startrow, 0);
1645                                                 cell(i).insert(0,
1646                                                         MathAtom(new InsetMathUnknown(from_ascii("\\hline"))));
1647                                         }
1648                                 }
1649                                 // append columns for the left over horizontal cells
1650                                 for (col_type c = numcols; c < grid.ncols(); ++c) {
1651                                         addCol(c + startcol);
1652                                         idx_type i = index(r + startrow, min(c + startcol, ncols() - 1));
1653                                         cell(i).append(grid.cell(grid.index(r, c)));
1654                                         ++numcols;
1655                                 }
1656                         }
1657                         // amend cursor position if cols have been appended
1658                         cur.idx() += startrow * (ncols() - oldncols);
1659                         // append rows for the left over vertical cells
1660                         idx_type i = nargs() - 1;
1661                         for (row_type r = numrows; r < grid.nrows(); ++r) {
1662                                 row_type crow = startrow + r;
1663                                 addRow(crow - 1);
1664                                 for (col_type c = 0; c < grid.ncols(); ++c)
1665                                         cell(index(min(crow, nrows() - 1), min(c + startcol, ncols() - 1))).append(grid.cell(grid.index(r, c)));
1666                                 if (hline_enabled)
1667                                         rowinfo_[crow].lines += grid.rowinfo_[r].lines;
1668                                 else {
1669                                         for (unsigned int l = 0; l < grid.rowinfo_[r].lines; ++l) {
1670                                                 cell(i).insert(0,
1671                                                         MathAtom(new InsetMathUnknown(from_ascii("\\hline"))));
1672                                         }
1673                                 }
1674                         }
1675                 }
1676                 cur.clearSelection(); // bug 393
1677                 // FIXME audit setBuffer calls
1678                 cur.inset().setBuffer(*buffer_);
1679                 cur.forceBufferUpdate();
1680                 cur.finishUndo();
1681                 break;
1682         }
1683
1684         case LFUN_LINE_BEGIN:
1685                 cur.screenUpdateFlags(Update::Decoration | Update::FitCursor);
1686                 // fall through
1687         case LFUN_LINE_BEGIN_SELECT:
1688                 cur.selHandle(act == LFUN_WORD_BACKWARD_SELECT ||
1689                                 act == LFUN_WORD_LEFT_SELECT ||
1690                                 act == LFUN_LINE_BEGIN_SELECT);
1691                 cur.macroModeClose();
1692                 if (cur.pos() != 0) {
1693                         cur.pos() = 0;
1694                 } else if (cur.idx() % cur.ncols() != 0) {
1695                         cur.idx() -= cur.idx() % cur.ncols();
1696                         cur.pos() = 0;
1697                 } else if (cur.idx() != 0) {
1698                         cur.idx() = 0;
1699                         cur.pos() = 0;
1700                 } else {
1701                         cmd = FuncRequest(LFUN_FINISHED_BACKWARD);
1702                         cur.undispatched();
1703                 }
1704                 break;
1705
1706         case LFUN_LINE_END:
1707                 cur.screenUpdateFlags(Update::Decoration | Update::FitCursor);
1708                 // fall through
1709         case LFUN_LINE_END_SELECT:
1710                 cur.selHandle(act == LFUN_WORD_FORWARD_SELECT ||
1711                                 act == LFUN_WORD_RIGHT_SELECT ||
1712                                 act == LFUN_LINE_END_SELECT);
1713                 cur.macroModeClose();
1714                 cur.clearTargetX();
1715                 if (cur.pos() != cur.lastpos()) {
1716                         cur.pos() = cur.lastpos();
1717                 } else if ((cur.idx() + 1) % cur.ncols() != 0) {
1718                         cur.idx() += cur.ncols() - 1 - cur.idx() % cur.ncols();
1719                         cur.pos() = cur.lastpos();
1720                 } else if (cur.idx() != cur.lastidx()) {
1721                         cur.idx() = cur.lastidx();
1722                         cur.pos() = cur.lastpos();
1723                 } else {
1724                         cmd = FuncRequest(LFUN_FINISHED_FORWARD);
1725                         cur.undispatched();
1726                 }
1727                 break;
1728
1729         default:
1730                 InsetMathNest::doDispatch(cur, cmd);
1731         }
1732 }
1733
1734
1735 bool InsetMathGrid::getStatus(Cursor & cur, FuncRequest const & cmd,
1736                 FuncStatus & status) const
1737 {
1738         switch (cmd.action()) {
1739         case LFUN_TABULAR_FEATURE: {
1740                 string s = cmd.getArg(0);
1741                 if (&cur.inset() != this) {
1742                         // Table actions requires that the cursor is _inside_ the
1743                         // table.
1744                         status.setEnabled(false);
1745                         status.message(from_utf8(N_("Cursor not in table")));
1746                         return true;
1747                 }
1748                 if (nrows() <= 1 && (s == "delete-row" || s == "swap-row")) {
1749                         status.setEnabled(false);
1750                         status.message(from_utf8(N_("Only one row")));
1751                         return true;
1752                 }
1753                 if (ncols() <= 1 &&
1754                     (s == "delete-column" || s == "swap-column")) {
1755                         status.setEnabled(false);
1756                         status.message(from_utf8(N_("Only one column")));
1757                         return true;
1758                 }
1759                 if ((rowinfo_[cur.row()].lines == 0 &&
1760                      s == "delete-hline-above") ||
1761                     (rowinfo_[cur.row() + 1].lines == 0 &&
1762                      s == "delete-hline-below")) {
1763                         status.setEnabled(false);
1764                         status.message(from_utf8(N_("No hline to delete")));
1765                         return true;
1766                 }
1767
1768                 if ((colinfo_[cur.col()].lines == 0 &&
1769                      s == "delete-vline-left") ||
1770                     (colinfo_[cur.col() + 1].lines == 0 &&
1771                      s == "delete-vline-right")) {
1772                         status.setEnabled(false);
1773                         status.message(from_utf8(N_("No vline to delete")));
1774                         return true;
1775                 }
1776                 if (s == "valign-top" || s == "valign-middle" ||
1777                     s == "valign-bottom" || s == "align-left" ||
1778                     s == "align-right" || s == "align-center") {
1779                         status.setEnabled(true);
1780                         char const ha = horizontalAlignment(cur.col());
1781                         char const va = verticalAlignment();
1782                         status.setOnOff((s == "align-left" && ha == 'l')
1783                                         || (s == "align-right"   && ha == 'r')
1784                                         || (s == "align-center"  && ha == 'c')
1785                                         || (s == "valign-top"    && va == 't')
1786                                         || (s == "valign-bottom" && va == 'b')
1787                                         || (s == "valign-middle" && va == 'c'));
1788                         return true;
1789                 }
1790                 if (s == "append-row" || s == "delete-row" ||
1791                     s == "copy-row" || s == "swap-row" ||
1792                     s == "add-hline-above" || s == "add-hline-below" ||
1793                     s == "delete-hline-above" || s == "delete-hline-below" ||
1794                     s == "append-column" || s == "delete-column" ||
1795                     s == "copy-column" || s == "swap-column" ||
1796                     s == "add-vline-left" || s == "add-vline-right" ||
1797                     s == "delete-vline-left" || s == "delete-vline-right") {
1798                         status.setEnabled(true);
1799                 } else {
1800                         status.setEnabled(false);
1801                         status.message(bformat(
1802                             from_utf8(N_("Unknown tabular feature '%1$s'")),
1803                             from_utf8(s)));
1804                 }
1805
1806                 return true;
1807         }
1808
1809         case LFUN_CELL_SPLIT:
1810                 status.setEnabled(cur.idx() != cur.lastidx());
1811                 return true;
1812
1813         case LFUN_CELL_BACKWARD:
1814         case LFUN_CELL_FORWARD:
1815                 status.setEnabled(true);
1816                 return true;
1817
1818         default:
1819                 break;
1820         }
1821         return InsetMathNest::getStatus(cur, cmd, status);
1822 }
1823
1824
1825 char InsetMathGrid::colAlign(HullType type, col_type col) const
1826 {
1827         switch (type) {
1828         case hullEqnArray:
1829                 return "rcl"[col % 3];
1830
1831         case hullMultline:
1832                 return 'c';
1833         case hullGather:
1834                 LASSERT(isBufferValid(),
1835                                 LYXERR0("Buffer not set correctly. Please report!");
1836                                 return 'c';);
1837                 if (buffer().params().is_math_indent)
1838                         return 'l';
1839                 else
1840                         return 'c';
1841
1842         case hullAlign:
1843         case hullAlignAt:
1844         case hullXAlignAt:
1845         case hullXXAlignAt:
1846         case hullFlAlign:
1847                 return "rl"[col & 1];
1848
1849         case hullUnknown:
1850         case hullNone:
1851         case hullSimple:
1852         case hullEquation:
1853         case hullRegexp:
1854                 return 'c';
1855         }
1856         // avoid warning
1857         return 'c';
1858 }
1859
1860
1861 //static
1862 int InsetMathGrid::colSpace(HullType type, col_type col)
1863 {
1864         int alignInterSpace = 0;
1865         switch (type) {
1866         case hullUnknown:
1867         case hullNone:
1868         case hullSimple:
1869         case hullEquation:
1870         case hullMultline:
1871         case hullGather:
1872         case hullRegexp:
1873                 return 0;
1874
1875         case hullEqnArray:
1876                 return 5;
1877
1878         case hullAlign:
1879                 alignInterSpace = 20;
1880                 break;
1881         case hullAlignAt:
1882                 alignInterSpace = 0;
1883                 break;
1884         case hullXAlignAt:
1885                 alignInterSpace = 40;
1886                 break;
1887         case hullXXAlignAt:
1888         case hullFlAlign:
1889                 alignInterSpace = 60;
1890                 break;
1891         }
1892         return (col % 2) ? alignInterSpace : 0;
1893 }
1894
1895
1896 } // namespace lyx