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