src/mathed/InsetMathGrid.cpp

   1 /**
   2  * \file InsetMathGrid.cpp
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author André Pönitz
   7  *
   8  * Full author contact details are available in file CREDITS.
   9  */
  10
  11 #include <config.h>
  12 #include <algorithm>
  13
  14 #include "InsetMathGrid.h"
  15
  16 #include "InsetMathUnknown.h"
  17 #include "MathData.h"
  18 #include "MathParser.h"
  19 #include "MathStream.h"
  20 #include "MetricsInfo.h"
  21
  22 #include "Buffer.h"
  23 #include "BufferParams.h"
  24 #include "BufferView.h"
  25 #include "Cursor.h"
  26 #include "CutAndPaste.h"
  27 #include "FuncRequest.h"
  28 #include "FuncStatus.h"
  29 #include "LaTeXFeatures.h"
  30 #include "TexRow.h"
  31
  32 #include "frontends/Clipboard.h"
  33 #include "frontends/Painter.h"
  34
  35 #include "support/debug.h"
  36 #include "support/docstream.h"
  37 #include "support/gettext.h"
  38 #include "support/lstrings.h"
  39 #include "support/lassert.h"
  40
  41 #include <sstream>
  42
  43 using namespace std;
  44 using namespace lyx::support;
  45
  46
  47
  48 namespace lyx {
  49
  50 static docstring verboseHLine(int n)
  51 {
  52         docstring res;
  53         for (int i = 0; i < n; ++i)
  54                 res += "\\hline";
  55         if (n)
  56                 res += ' ';
  57         return res;
  58 }
  59
  60
  61 static int extractInt(istream & is)
  62 {
  63         int num = 1;
  64         is >> num;
  65         return (num == 0) ? 1 : num;
  66 }
  67
  68
  69 static void resetGrid(InsetMathGrid & grid)
  70 {
  71         while (grid.ncols() > 1)
  72                 grid.delCol(grid.ncols() - 1);
  73         while (grid.nrows() > 1)
  74                 grid.delRow(grid.nrows() - 1);
  75         grid.cell(0).erase(0, grid.cell(0).size());
  76         grid.setDefaults();
  77 }
  78
  79
  80
  81 //////////////////////////////////////////////////////////////
  82
  83
  84 InsetMathGrid::CellInfo::CellInfo()
  85         : multi_(CELL_NORMAL)
  86 {}
  87
  88
  89
  90 //////////////////////////////////////////////////////////////
  91
  92
  93 InsetMathGrid::RowInfo::RowInfo()
  94         : descent_(0), ascent_(0), offset_(0), lines_(0), skip_(0),
  95           allow_newpage_(true)
  96 {}
  97
  98
  99
 100 int InsetMathGrid::RowInfo::skipPixels(MetricsInfo const & mi) const
 101 {
 102         return crskip_.inPixels(mi.base);
 103 }
 104
 105
 106
 107 //////////////////////////////////////////////////////////////
 108
 109
 110 InsetMathGrid::ColInfo::ColInfo()
 111         : align_('c'), width_(0), offset_(0), lines_(0), skip_(0)
 112 {}
 113
 114
 115 //////////////////////////////////////////////////////////////
 116
 117
 118 InsetMathGrid::InsetMathGrid(Buffer * buf)
 119         : InsetMathNest(buf, 1),
 120           rowinfo_(1 + 1),
 121                 colinfo_(1 + 1),
 122                 cellinfo_(1),
 123                 v_align_('c')
 124 {
 125         setDefaults();
 126 }
 127
 128
 129 InsetMathGrid::InsetMathGrid(Buffer * buf, col_type m, row_type n)
 130         : InsetMathNest(buf, m * n),
 131           rowinfo_(n + 1),
 132                 colinfo_(m + 1),
 133                 cellinfo_(m * n),
 134                 v_align_('c')
 135 {
 136         setDefaults();
 137 }
 138
 139
 140 InsetMathGrid::InsetMathGrid(Buffer * buf, col_type m, row_type n, char v,
 141         docstring const & h)
 142         : InsetMathNest(buf, m * n),
 143           rowinfo_(n + 1),
 144           colinfo_(m + 1),
 145                 cellinfo_(m * n),
 146                 v_align_(v)
 147 {
 148         setDefaults();
 149         setVerticalAlignment(v);
 150         setHorizontalAlignments(h);
 151 }
 152
 153
 154 Inset * InsetMathGrid::clone() const
 155 {
 156         return new InsetMathGrid(*this);
 157 }
 158
 159
 160 InsetMath::idx_type InsetMathGrid::index(row_type row, col_type col) const
 161 {
 162         return col + ncols() * row;
 163 }
 164
 165
 166 void InsetMathGrid::setDefaults()
 167 {
 168         if (ncols() <= 0)
 169                 lyxerr << "positive number of columns expected" << endl;
 170         //if (nrows() <= 0)
 171         //      lyxerr << "positive number of rows expected" << endl;
 172         for (col_type col = 0; col < ncols(); ++col) {
 173                 colinfo_[col].align_ = defaultColAlign(col);
 174                 colinfo_[col].skip_  = defaultColSpace(col);
 175                 colinfo_[col].special_.clear();
 176         }
 177         for (idx_type idx = 0; idx < nargs(); ++idx)
 178                 cellinfo_[idx].multi_ = CELL_NORMAL;
 179 }
 180
 181
 182 bool InsetMathGrid::interpretString(Cursor & cur, docstring const & str)
 183 {
 184         if (str == "\\hline") {
 185                 FuncRequest fr = FuncRequest(LFUN_TABULAR_FEATURE, "add-hline-above");
 186                 FuncStatus status;
 187                 if (getStatus(cur, fr, status)) {
 188                         if (status.enabled()) {
 189                                 rowinfo_[cur.row()].lines_++;
 190                                 return true;
 191                         }
 192                 }
 193         }
 194         return InsetMathNest::interpretString(cur, str);
 195 }
 196
 197
 198 void InsetMathGrid::setHorizontalAlignments(docstring const & hh)
 199 {
 200         col_type col = 0;
 201         for (docstring::const_iterator it = hh.begin(); it != hh.end(); ++it) {
 202                 char_type c = *it;
 203                 if (c == '|') {
 204                         colinfo_[col].lines_++;
 205                 } else if ((c == 'p' || c == 'm' || c == 'b'||
 206                             c == '!' || c == '@' || c == '>' || c == '<') &&
 207                            it + 1 != hh.end() && *(it + 1) == '{') {
 208                         // @{decl.} and p{width} are standard LaTeX, the
 209                         // others are extensions by array.sty
 210                         bool const newcolumn = c == 'p' || c == 'm' || c == 'b';
 211                         if (newcolumn) {
 212                                 // this declares a new column
 213                                 if (col >= ncols())
 214                                         // Only intercolumn stuff is allowed
 215                                         // in the last dummy column
 216                                         break;
 217                                 colinfo_[col].align_ = 'l';
 218                         } else {
 219                                 // this is intercolumn stuff
 220                                 if (colinfo_[col].special_.empty())
 221                                         // Overtake possible lines
 222                                         colinfo_[col].special_ = docstring(colinfo_[col].lines_, '|');
 223                         }
 224                         int brace_open = 0;
 225                         int brace_close = 0;
 226                         while (it != hh.end()) {
 227                                 c = *it;
 228                                 colinfo_[col].special_ += c;
 229                                 if (c == '{')
 230                                         ++brace_open;
 231                                 else if (c == '}')
 232                                         ++brace_close;
 233                                 ++it;
 234                                 if (brace_open > 0 && brace_open == brace_close)
 235                                         break;
 236                         }
 237                         --it;
 238                         if (newcolumn) {
 239                                 colinfo_[col].lines_ = count(
 240                                         colinfo_[col].special_.begin(),
 241                                         colinfo_[col].special_.end(), '|');
 242                                 LYXERR(Debug::MATHED, "special column separator: `"
 243                                         << to_utf8(colinfo_[col].special_) << '\'');
 244                                 ++col;
 245                                 colinfo_[col].lines_ = 0;
 246                                 colinfo_[col].special_.clear();
 247                         }
 248                 } else if (col >= ncols()) {
 249                         // Only intercolumn stuff is allowed in the last
 250                         // dummy column
 251                         break;
 252                 } else if (c == 'c' || c == 'l' || c == 'r') {
 253                         colinfo_[col].align_ = static_cast<char>(c);
 254                         if (!colinfo_[col].special_.empty()) {
 255                                 colinfo_[col].special_ += c;
 256                                 colinfo_[col].lines_ = count(
 257                                                 colinfo_[col].special_.begin(),
 258                                                 colinfo_[col].special_.end(), '|');
 259                                 LYXERR(Debug::MATHED, "special column separator: `"
 260                                         << to_utf8(colinfo_[col].special_) << '\'');
 261                         }
 262                         ++col;
 263                         colinfo_[col].lines_ = 0;
 264                         colinfo_[col].special_.clear();
 265                 } else {
 266                         lyxerr << "unknown column separator: '" << c << "'" << endl;
 267                 }
 268         }
 269
 270 /*
 271         col_type n = hh.size();
 272         if (n > ncols())
 273                 n = ncols();
 274         for (col_type col = 0; col < n; ++col)
 275                 colinfo_[col].align_ = hh[col];
 276 */
 277 }
 278
 279
 280 InsetMathGrid::col_type InsetMathGrid::guessColumns(docstring const & hh)
 281 {
 282         col_type col = 0;
 283         for (docstring::const_iterator it = hh.begin(); it != hh.end(); ++it)
 284                 if (*it == 'c' || *it == 'l' || *it == 'r'||
 285                     *it == 'p' || *it == 'm' || *it == 'b')
 286                         ++col;
 287         // let's have at least one column, even if we did not recognize its
 288         // alignment
 289         if (col == 0)
 290                 col = 1;
 291         return col;
 292 }
 293
 294
 295 void InsetMathGrid::setHorizontalAlignment(char h, col_type col)
 296 {
 297         colinfo_[col].align_ = h;
 298         if (!colinfo_[col].special_.empty()) {
 299                 char_type & c = colinfo_[col].special_[colinfo_[col].special_.size() - 1];
 300                 if (c == 'l' || c == 'c' || c == 'r')
 301                         c = h;
 302         }
 303         // FIXME: Change alignment of p, m and b columns, too
 304 }
 305
 306
 307 char InsetMathGrid::horizontalAlignment(col_type col) const
 308 {
 309         return colinfo_[col].align_;
 310 }
 311
 312
 313 docstring InsetMathGrid::horizontalAlignments() const
 314 {
 315         docstring res;
 316         for (col_type col = 0; col < ncols(); ++col) {
 317                 if (colinfo_[col].special_.empty()) {
 318                         res += docstring(colinfo_[col].lines_, '|');
 319                         res += colinfo_[col].align_;
 320                 } else
 321                         res += colinfo_[col].special_;
 322         }
 323         if (colinfo_[ncols()].special_.empty())
 324                 return res + docstring(colinfo_[ncols()].lines_, '|');
 325         return res + colinfo_[ncols()].special_;
 326 }
 327
 328
 329 void InsetMathGrid::setVerticalAlignment(char c)
 330 {
 331         v_align_ = c;
 332 }
 333
 334
 335 char InsetMathGrid::verticalAlignment() const
 336 {
 337         return v_align_;
 338 }
 339
 340
 341 InsetMathGrid::col_type InsetMathGrid::ncols() const
 342 {
 343         return colinfo_.size() - 1;
 344 }
 345
 346
 347 InsetMathGrid::row_type InsetMathGrid::nrows() const
 348 {
 349         return rowinfo_.size() - 1;
 350 }
 351
 352
 353 InsetMathGrid::col_type InsetMathGrid::col(idx_type idx) const
 354 {
 355         return idx % ncols();
 356 }
 357
 358
 359 InsetMathGrid::row_type InsetMathGrid::row(idx_type idx) const
 360 {
 361         return idx / ncols();
 362 }
 363
 364
 365 InsetMathGrid::col_type InsetMathGrid::ncellcols(idx_type idx) const
 366 {
 367         col_type cols = 1;
 368         if (cellinfo_[idx].multi_ == CELL_NORMAL)
 369                 return cols;
 370         // If the cell at idx is already CELL_PART_OF_MULTICOLUMN we return
 371         // the number of remaining columns, not the ones of the complete
 372         // multicolumn cell. This makes it possible to always go to the next
 373         // cell with idx + ncellcols(idx) - 1.
 374         row_type const r = row(idx);
 375         while (idx+cols < nargs() && row(idx+cols) == r &&
 376                cellinfo_[idx+cols].multi_ == CELL_PART_OF_MULTICOLUMN)
 377                 cols++;
 378         return cols;
 379 }
 380
 381
 382 void InsetMathGrid::vcrskip(Length const & crskip, row_type row)
 383 {
 384         rowinfo_[row].crskip_ = crskip;
 385 }
 386
 387
 388 Length InsetMathGrid::vcrskip(row_type row) const
 389 {
 390         return rowinfo_[row].crskip_;
 391 }
 392
 393
 394 void InsetMathGrid::metrics(MetricsInfo & mi, Dimension & dim) const
 395 {
 396         // let the cells adjust themselves
 397         for (idx_type i = 0; i < nargs(); ++i) {
 398                 if (cellinfo_[i].multi_ != CELL_PART_OF_MULTICOLUMN) {
 399                         Dimension dimc;
 400                         cell(i).metrics(mi, dimc);
 401                 }
 402         }
 403
 404         BufferView & bv = *mi.base.bv;
 405
 406         // compute absolute sizes of vertical structure
 407         for (row_type row = 0; row < nrows(); ++row) {
 408                 int asc  = 0;
 409                 int desc = 0;
 410                 for (col_type col = 0; col < ncols(); ++col) {
 411                         idx_type const i = index(row, col);
 412                         if (cellinfo_[i].multi_ != CELL_PART_OF_MULTICOLUMN) {
 413                                 Dimension const & dimc = cell(i).dimension(bv);
 414                                 asc  = max(asc,  dimc.asc);
 415                                 desc = max(desc, dimc.des);
 416                         }
 417                 }
 418                 rowinfo_[row].ascent_  = asc;
 419                 rowinfo_[row].descent_ = desc;
 420         }
 421         rowinfo_[nrows()].ascent_  = 0;
 422         rowinfo_[nrows()].descent_ = 0;
 423
 424         // compute vertical offsets
 425         rowinfo_[0].offset_ = 0;
 426         for (row_type row = 1; row <= nrows(); ++row) {
 427                 rowinfo_[row].offset_ =
 428                         rowinfo_[row - 1].offset_ +
 429                         rowinfo_[row - 1].descent_ +
 430                         rowinfo_[row - 1].skipPixels(mi) +
 431                         rowsep() +
 432                         rowinfo_[row].lines_ * hlinesep() +
 433                         rowinfo_[row].ascent_;
 434         }
 435
 436         // adjust vertical offset
 437         int h = 0;
 438         switch (v_align_) {
 439                 case 't':
 440                         h = 0;
 441                         break;
 442                 case 'b':
 443                         h = rowinfo_[nrows() - 1].offset_;
 444                         break;
 445                 default:
 446                         h = rowinfo_[nrows() - 1].offset_ / 2;
 447         }
 448         for (row_type row = 0; row <= nrows(); ++row)
 449                 rowinfo_[row].offset_ -= h;
 450
 451
 452         // multicolumn cell widths, as a map from first column to width in a
 453         // vector of last columns.
 454         // This is only used if the grid has more than one row, since for
 455         // one-row grids multicolumn cells do not need special handling
 456         vector<map<col_type, int> > mcolwidths(ncols());
 457
 458         // compute absolute sizes of horizontal structure
 459         for (col_type col = 0; col < ncols(); ++col) {
 460                 int wid = 0;
 461                 for (row_type row = 0; row < nrows(); ++row) {
 462                         idx_type const i = index(row, col);
 463                         if (cellinfo_[i].multi_ != CELL_PART_OF_MULTICOLUMN) {
 464                                 int const w = cell(i).dimension(bv).wid;
 465                                 col_type const cols = ncellcols(i);
 466                                 if (cols > 1 && nrows() > 1) {
 467                                         col_type last = col+cols-1;
 468                                         LASSERT(last < ncols(), last = ncols()-1);
 469                                         map<col_type, int>::iterator it =
 470                                                 mcolwidths[last].find(col);
 471                                         if (it == mcolwidths[last].end())
 472                                                 mcolwidths[last][col] = w;
 473                                         else
 474                                                 it->second = max(it->second, w);
 475                                 } else
 476                                         wid = max(wid, w);
 477                         }
 478                 }
 479                 colinfo_[col].width_ = wid;
 480         }
 481         colinfo_[ncols()].width_  = 0;
 482
 483         // compute horizontal offsets
 484         colinfo_[0].offset_ = border() + colinfo_[0].lines_ * vlinesep();;
 485         for (col_type col = 1; col <= ncols(); ++col) {
 486                 colinfo_[col].offset_ =
 487                         colinfo_[col - 1].offset_ +
 488                         colinfo_[col - 1].width_ +
 489                         displayColSpace(col - 1) +
 490                         colsep() +
 491                         colinfo_[col].lines_ * vlinesep();
 492         }
 493
 494         // increase column widths for multicolumn cells if needed
 495         // FIXME: multicolumn lines are not yet considered
 496         for (col_type last = 0; last < ncols(); ++last) {
 497                 map<col_type, int> const & widths = mcolwidths[last];
 498                 // We increase the width of the last column of the multicol
 499                 // cell (some sort of left alignment). Since we iterate through
 500                 // the last and the first columns from left to right, we ensure
 501                 // that increased widths of previous columns are correctly
 502                 // taken into account for later columns, thus preventing
 503                 // unneeded width increasing.
 504                 for (map<col_type, int>::const_iterator it = widths.begin();
 505                      it != widths.end(); ++it) {
 506                         int const wid = it->second;
 507                         col_type const first = it->first;
 508                         int const nextoffset =
 509                                 colinfo_[first].offset_ +
 510                                 wid +
 511                                 displayColSpace(last) +
 512                                 colsep() +
 513                                 colinfo_[last+1].lines_ * vlinesep();
 514                         int const dx = nextoffset - colinfo_[last+1].offset_;
 515                         if (dx > 0) {
 516                                 colinfo_[last].width_ += dx;
 517                                 for (col_type col = last + 1; col <= ncols(); ++col)
 518                                         colinfo_[col].offset_ += dx;
 519                         }
 520                 }
 521         }
 522
 523
 524         dim.wid = colinfo_[ncols() - 1].offset_
 525                 + colinfo_[ncols() - 1].width_
 526                 + vlinesep() * colinfo_[ncols()].lines_
 527                 + border();
 528
 529         dim.asc = - rowinfo_[0].offset_
 530                 + rowinfo_[0].ascent_
 531                 + hlinesep() * rowinfo_[0].lines_
 532                 + border();
 533
 534         dim.des = rowinfo_[nrows() - 1].offset_
 535                 + rowinfo_[nrows() - 1].descent_
 536                 + hlinesep() * rowinfo_[nrows()].lines_
 537                 + border() + 1;
 538
 539
 540 /*
 541         // Increase ws_[i] for 'R' columns (except the first one)
 542         for (int i = 1; i < nc_; ++i)
 543                 if (align_[i] == 'R')
 544                         ws_[i] += 10 * df_width;
 545         // Increase ws_[i] for 'C' column
 546         if (align_[0] == 'C')
 547                 if (ws_[0] < 7 * workwidth / 8)
 548                         ws_[0] = 7 * workwidth / 8;
 549
 550         // Adjust local tabs
 551         width = colsep();
 552         for (cxrow = row_.begin(); cxrow; ++cxrow) {
 553                 int rg = COLSEP;
 554                 int lf = 0;
 555                 for (int i = 0; i < nc_; ++i) {
 556                         bool isvoid = false;
 557                         if (cxrow->getTab(i) <= 0) {
 558                                 cxrow->setTab(i, df_width);
 559                                 isvoid = true;
 560                         }
 561                         switch (align_[i]) {
 562                         case 'l':
 563                                 lf = 0;
 564                                 break;
 565                         case 'c':
 566                                 lf = (ws_[i] - cxrow->getTab(i))/2;
 567                                 break;
 568                         case 'r':
 569                         case 'R':
 570                                 lf = ws_[i] - cxrow->getTab(i);
 571                                 break;
 572                         case 'C':
 573                                 if (cxrow == row_.begin())
 574                                         lf = 0;
 575                                 else if (cxrow.is_last())
 576                                         lf = ws_[i] - cxrow->getTab(i);
 577                                 else
 578                                         lf = (ws_[i] - cxrow->getTab(i))/2;
 579                                 break;
 580                         }
 581                         int const ww = (isvoid) ? lf : lf + cxrow->getTab(i);
 582                         cxrow->setTab(i, lf + rg);
 583                         rg = ws_[i] - ww + colsep();
 584                         if (cxrow == row_.begin())
 585                                 width += ws_[i] + colsep();
 586                 }
 587                 cxrow->setBaseline(cxrow->getBaseline() - ascent);
 588         }
 589 */
 590         dim.wid += leftMargin() + rightMargin();
 591         metricsMarkers2(mi, dim);
 592 }
 593
 594
 595 int InsetMathGrid::vLineHOffset(col_type col, unsigned int line) const
 596 {
 597         if (col < ncols())
 598                 return leftMargin() + colinfo_[col].offset_
 599                         - (colinfo_[col].lines_ - line - 1) * vlinesep()
 600                         - vlinesep()/2 - colsep()/2;
 601         else {
 602                 LASSERT(col == ncols(), return 0);
 603                 return leftMargin() + colinfo_[col-1].offset_ + colinfo_[col-1].width_
 604                         + line * vlinesep()
 605                         + vlinesep()/2 + colsep()/2;
 606         }
 607 }
 608
 609
 610 int InsetMathGrid::hLineVOffset(row_type row, unsigned int line) const
 611 {
 612         return rowinfo_[row].offset_
 613                 - rowinfo_[row].ascent_
 614                 - line * hlinesep()
 615                 - hlinesep()/2 - rowsep()/2;
 616 }
 617
 618
 619 void InsetMathGrid::draw(PainterInfo & pi, int x, int y) const
 620 {
 621         BufferView const & bv = *pi.base.bv;
 622
 623         for (idx_type idx = 0; idx < nargs(); ++idx) {
 624                 if (cellinfo_[idx].multi_ != CELL_PART_OF_MULTICOLUMN) {
 625                         cell(idx).draw(pi,
 626                                        x + leftMargin() + cellXOffset(bv, idx),
 627                                        y + cellYOffset(idx));
 628
 629                         row_type r = row(idx);
 630                         int const yy1 = y + hLineVOffset(r, 0);
 631                         int const yy2 = y + hLineVOffset(r + 1, rowinfo_[r + 1].lines_ - 1);
 632                         auto draw_left_borders = [&](col_type c) {
 633                                 for (unsigned int i = 0; i < colinfo_[c].lines_; ++i) {
 634                                         int const xx = x + vLineHOffset(c, i);
 635                                         pi.pain.line(xx, yy1, xx, yy2, Color_foreground);
 636                                 }
 637                         };
 638                         col_type c = col(idx);
 639                         // Draw inner left borders cell-by-cell because of multicolumns
 640                         draw_left_borders(c);
 641                         // Draw the right border (only once)
 642                         if (c == 0)
 643                                 draw_left_borders(ncols());
 644                 }
 645         }
 646
 647         // Draw horizontal borders
 648         for (row_type r = 0; r <= nrows(); ++r) {
 649                 int const xx1 = x + vLineHOffset(0, 0);
 650                 int const xx2 = x + vLineHOffset(ncols(), colinfo_[ncols()].lines_ - 1);
 651                 for (unsigned int i = 0; i < rowinfo_[r].lines_; ++i) {
 652                         int const yy = y + hLineVOffset(r, i);
 653                         pi.pain.line(xx1, yy, xx2, yy, Color_foreground);
 654                 }
 655         }
 656
 657         drawMarkers2(pi, x, y);
 658 }
 659
 660
 661 void InsetMathGrid::metricsT(TextMetricsInfo const & mi, Dimension & dim) const
 662 {
 663         // let the cells adjust themselves
 664         for (idx_type i = 0; i < nargs(); ++i)
 665                 if (cellinfo_[i].multi_ != CELL_PART_OF_MULTICOLUMN)
 666                         cell(i).metricsT(mi, dim);
 667
 668         // compute absolute sizes of vertical structure
 669         for (row_type row = 0; row < nrows(); ++row) {
 670                 int asc  = 0;
 671                 int desc = 0;
 672                 for (col_type col = 0; col < ncols(); ++col) {
 673                         idx_type const i = index(row, col);
 674                         if (cellinfo_[i].multi_ != CELL_PART_OF_MULTICOLUMN) {
 675                                 //MathData const & c = cell(i);
 676                                 // FIXME: BROKEN!
 677                                 Dimension dimc;
 678                                 asc  = max(asc,  dimc.ascent());
 679                                 desc = max(desc, dimc.descent());
 680                         }
 681                 }
 682                 rowinfo_[row].ascent_  = asc;
 683                 rowinfo_[row].descent_ = desc;
 684         }
 685         rowinfo_[nrows()].ascent_  = 0;
 686         rowinfo_[nrows()].descent_ = 0;
 687
 688         // compute vertical offsets
 689         rowinfo_[0].offset_ = 0;
 690         for (row_type row = 1; row <= nrows(); ++row) {
 691                 rowinfo_[row].offset_  =
 692                         rowinfo_[row - 1].offset_  +
 693                         rowinfo_[row - 1].descent_ +
 694                         //rowinfo_[row - 1].skipPixels(mi) +
 695                         1 + //rowsep() +
 696                         //rowinfo_[row].lines_ * hlinesep() +
 697                         rowinfo_[row].ascent_;
 698         }
 699
 700         // adjust vertical offset
 701         int h = 0;
 702         switch (v_align_) {
 703                 case 't':
 704                         h = 0;
 705                         break;
 706                 case 'b':
 707                         h = rowinfo_[nrows() - 1].offset_;
 708                         break;
 709                 default:
 710                         h = rowinfo_[nrows() - 1].offset_ / 2;
 711         }
 712         for (row_type row = 0; row <= nrows(); ++row)
 713                 rowinfo_[row].offset_ -= h;
 714
 715
 716         // compute absolute sizes of horizontal structure
 717         for (col_type col = 0; col < ncols(); ++col) {
 718                 int wid = 0;
 719                 for (row_type row = 0; row < nrows(); ++row) {
 720                         // FIXME: BROKEN!
 721                         //idx_type const i = index(row, col);
 722                         //if (cellinfo_[i].multi_ != CELL_PART_OF_MULTICOLUMN)
 723                         //      wid = max(wid, cell(i).width());
 724                 }
 725                 colinfo_[col].width_ = wid;
 726         }
 727         colinfo_[ncols()].width_  = 0;
 728
 729         // compute horizontal offsets
 730         colinfo_[0].offset_ = border();
 731         for (col_type col = 1; col <= ncols(); ++col) {
 732                 colinfo_[col].offset_ =
 733                         colinfo_[col - 1].offset_ +
 734                         colinfo_[col - 1].width_ +
 735                         displayColSpace(col - 1) +
 736                         1 ; //colsep() +
 737                         //colinfo_[col].lines_ * vlinesep();
 738         }
 739
 740
 741         dim.wid  =  colinfo_[ncols() - 1].offset_
 742                        + colinfo_[ncols() - 1].width_
 743                  //+ vlinesep() * colinfo_[ncols()].lines_
 744                        + 2;
 745
 746         dim.asc  = -rowinfo_[0].offset_
 747                        + rowinfo_[0].ascent_
 748                  //+ hlinesep() * rowinfo_[0].lines_
 749                        + 1;
 750
 751         dim.des  =  rowinfo_[nrows() - 1].offset_
 752                        + rowinfo_[nrows() - 1].descent_
 753                  //+ hlinesep() * rowinfo_[nrows()].lines_
 754                        + 1;
 755 }
 756
 757
 758 void InsetMathGrid::drawT(TextPainter & /*pain*/, int /*x*/, int /*y*/) const
 759 {
 760 //      for (idx_type idx = 0; idx < nargs(); ++idx)
 761 //              if (cellinfo_[idx].multi_ != CELL_PART_OF_MULTICOLUMN)
 762 //                      cell(idx).drawT(pain, x + cellXOffset(idx), y + cellYOffset(idx));
 763 }
 764
 765
 766 void InsetMathGrid::updateBuffer(ParIterator const & it, UpdateType utype)
 767 {
 768         // pass down
 769         for (idx_type idx = 0; idx < nargs(); ++idx)
 770                 if (cellinfo_[idx].multi_ != CELL_PART_OF_MULTICOLUMN)
 771                         cell(idx).updateBuffer(it, utype);
 772 }
 773
 774
 775 docstring InsetMathGrid::eolString(row_type row, bool fragile,
 776                 bool /*latex*/, bool last_eoln) const
 777 {
 778         docstring eol;
 779
 780         if (!rowinfo_[row].crskip_.zero())
 781                 eol += '[' + from_utf8(rowinfo_[row].crskip_.asLatexString()) + ']';
 782         else if(!rowinfo_[row].allow_newpage_)
 783                 eol += '*';
 784
 785         // make sure an upcoming '[' does not break anything
 786         if (row + 1 < nrows()) {
 787                 MathData const & c = cell(index(row + 1, 0));
 788                 if (!c.empty() && c.front()->getChar() == '[')
 789                         //eol += "[0pt]";
 790                         eol += "{}";
 791         }
 792
 793         // only add \\ if necessary
 794         if (eol.empty() && row + 1 == nrows() && (nrows() == 1 || !last_eoln))
 795                 return docstring();
 796
 797         return (fragile ? "\\protect\\\\" : "\\\\") + eol;
 798 }
 799
 800
 801 docstring InsetMathGrid::eocString(col_type col, col_type lastcol) const
 802 {
 803         if (col + 1 == lastcol)
 804                 return docstring();
 805         return from_ascii(" & ");
 806 }
 807
 808
 809 void InsetMathGrid::addRow(row_type row)
 810 {
 811         rowinfo_.insert(rowinfo_.begin() + row + 1, RowInfo());
 812         cells_.insert
 813                 (cells_.begin() + (row + 1) * ncols(), ncols(), MathData());
 814         cellinfo_.insert
 815                 (cellinfo_.begin() + (row + 1) * ncols(), ncols(), CellInfo());
 816 }
 817
 818
 819 void InsetMathGrid::delRow(row_type row)
 820 {
 821         if (nrows() == 1)
 822                 return;
 823
 824         cells_type::iterator it = cells_.begin() + row * ncols();
 825         cells_.erase(it, it + ncols());
 826
 827         vector<CellInfo>::iterator jt = cellinfo_.begin() + row * ncols();
 828         cellinfo_.erase(jt, jt + ncols());
 829
 830         rowinfo_.erase(rowinfo_.begin() + row);
 831 }
 832
 833
 834 void InsetMathGrid::copyRow(row_type row)
 835 {
 836         addRow(row);
 837         for (col_type col = 0; col < ncols(); ++col)
 838                 cells_[(row + 1) * ncols() + col] = cells_[row * ncols() + col];
 839 }
 840
 841
 842 void InsetMathGrid::swapRow(row_type row)
 843 {
 844         if (nrows() == 1)
 845                 return;
 846         if (row + 1 == nrows())
 847                 --row;
 848         for (col_type col = 0; col < ncols(); ++col)
 849                 swap(cells_[row * ncols() + col], cells_[(row + 1) * ncols() + col]);
 850 }
 851
 852
 853 void InsetMathGrid::addCol(col_type newcol)
 854 {
 855         const col_type nc = ncols();
 856         const row_type nr = nrows();
 857         cells_type new_cells((nc + 1) * nr);
 858         vector<CellInfo> new_cellinfo((nc + 1) * nr);
 859
 860         for (row_type row = 0; row < nr; ++row)
 861                 for (col_type col = 0; col < nc; ++col) {
 862                         new_cells[row * (nc + 1) + col + (col >= newcol)]
 863                                 = cells_[row * nc + col];
 864                         new_cellinfo[row * (nc + 1) + col + (col >= newcol)]
 865                                 = cellinfo_[row * nc + col];
 866                 }
 867         swap(cells_, new_cells);
 868         swap(cellinfo_, new_cellinfo);
 869
 870         ColInfo inf;
 871         inf.skip_  = defaultColSpace(newcol);
 872         inf.align_ = defaultColAlign(newcol);
 873         colinfo_.insert(colinfo_.begin() + newcol, inf);
 874 }
 875
 876
 877 void InsetMathGrid::delCol(col_type col)
 878 {
 879         if (ncols() == 1)
 880                 return;
 881
 882         cells_type tmpcells;
 883         vector<CellInfo> tmpcellinfo;
 884         for (col_type i = 0; i < nargs(); ++i)
 885                 if (i % ncols() != col) {
 886                         tmpcells.push_back(cells_[i]);
 887                         tmpcellinfo.push_back(cellinfo_[i]);
 888                 }
 889         swap(cells_, tmpcells);
 890         swap(cellinfo_, tmpcellinfo);
 891
 892         colinfo_.erase(colinfo_.begin() + col);
 893 }
 894
 895
 896 void InsetMathGrid::copyCol(col_type col)
 897 {
 898         addCol(col+1);
 899         for (row_type row = 0; row < nrows(); ++row)
 900                 cells_[row * ncols() + col + 1] = cells_[row * ncols() + col];
 901 }
 902
 903
 904 void InsetMathGrid::swapCol(col_type col)
 905 {
 906         if (ncols() == 1)
 907                 return;
 908         if (col + 1 == ncols())
 909                 --col;
 910         for (row_type row = 0; row < nrows(); ++row)
 911                 swap(cells_[row * ncols() + col], cells_[row * ncols() + col + 1]);
 912 }
 913
 914
 915 int InsetMathGrid::cellXOffset(BufferView const & bv, idx_type idx) const
 916 {
 917         if (cellinfo_[idx].multi_ == CELL_PART_OF_MULTICOLUMN)
 918                 return 0;
 919         col_type c = col(idx);
 920         int x = colinfo_[c].offset_;
 921         char align = displayColAlign(idx);
 922         Dimension const & celldim = cell(idx).dimension(bv);
 923         if (align == 'r' || align == 'R')
 924                 x += cellWidth(idx) - celldim.wid;
 925         if (align == 'c' || align == 'C')
 926                 x += (cellWidth(idx) - celldim.wid) / 2;
 927         return x;
 928 }
 929
 930
 931 int InsetMathGrid::cellYOffset(idx_type idx) const
 932 {
 933         return rowinfo_[row(idx)].offset_;
 934 }
 935
 936
 937 int InsetMathGrid::cellWidth(idx_type idx) const
 938 {
 939         switch (cellinfo_[idx].multi_) {
 940         case CELL_NORMAL:
 941                 return colinfo_[col(idx)].width_;
 942         case CELL_BEGIN_OF_MULTICOLUMN: {
 943                 col_type c1 = col(idx);
 944                 col_type c2 = c1 + ncellcols(idx);
 945                 return colinfo_[c2].offset_
 946                         - colinfo_[c1].offset_
 947                         - displayColSpace(c2)
 948                         - colsep()
 949                         - colinfo_[c2].lines_ * vlinesep();
 950         }
 951         case CELL_PART_OF_MULTICOLUMN:
 952                 return 0;
 953         }
 954         return 0;
 955 }
 956
 957
 958 bool InsetMathGrid::idxUpDown(Cursor & cur, bool up) const
 959 {
 960         if (up) {
 961                 if (cur.row() == 0)
 962                         return false;
 963                 cur.idx() -= ncols();
 964         } else {
 965                 if (cur.row() + 1 >= nrows())
 966                         return false;
 967                 cur.idx() += ncols();
 968         }
 969         // If we are in a multicolumn cell, move to the "real" cell
 970         while (cellinfo_[cur.idx()].multi_ == CELL_PART_OF_MULTICOLUMN) {
 971                 LASSERT(cur.idx() > 0, return false);
 972                 --cur.idx();
 973         }
 974         cur.pos() = cur.cell().x2pos(&cur.bv(), cur.x_target() - cur.cell().xo(cur.bv()));
 975         return true;
 976 }
 977
 978
 979 bool InsetMathGrid::idxBackward(Cursor & cur) const
 980 {
 981         // leave matrix if at the front edge
 982         if (cur.col() == 0)
 983                 return false;
 984         --cur.idx();
 985         // If we are in a multicolumn cell, move to the "real" cell
 986         while (cellinfo_[cur.idx()].multi_ == CELL_PART_OF_MULTICOLUMN) {
 987                 LASSERT(cur.idx() > 0, return false);
 988                 --cur.idx();
 989         }
 990         cur.pos() = cur.lastpos();
 991         return true;
 992 }
 993
 994
 995 bool InsetMathGrid::idxForward(Cursor & cur) const
 996 {
 997         // leave matrix if at the back edge
 998         if (cur.col() + 1 == ncols())
 999                 return false;
1000         ++cur.idx();
1001         // If we are in a multicolumn cell, move to the next cell
1002         while (cellinfo_[cur.idx()].multi_ == CELL_PART_OF_MULTICOLUMN) {
1003                 // leave matrix if at the back edge
1004                 if (cur.col() + 1 == ncols())
1005                         return false;
1006                 ++cur.idx();
1007         }
1008         cur.pos() = 0;
1009         return true;
1010 }
1011
1012
1013 bool InsetMathGrid::idxFirst(Cursor & cur) const
1014 {
1015         switch (v_align_) {
1016                 case 't':
1017                         cur.idx() = 0;
1018                         break;
1019                 case 'b':
1020                         cur.idx() = (nrows() - 1) * ncols();
1021                         break;
1022                 default:
1023                         cur.idx() = ((nrows() - 1) / 2) * ncols();
1024         }
1025         // If we are in a multicolumn cell, move to the "real" cell
1026         while (cellinfo_[cur.idx()].multi_ == CELL_PART_OF_MULTICOLUMN) {
1027                 LASSERT(cur.idx() > 0, return false);
1028                 --cur.idx();
1029         }
1030         cur.pos() = 0;
1031         return true;
1032 }
1033
1034
1035 bool InsetMathGrid::idxLast(Cursor & cur) const
1036 {
1037         switch (v_align_) {
1038                 case 't':
1039                         cur.idx() = ncols() - 1;
1040                         break;
1041                 case 'b':
1042                         cur.idx() = nargs() - 1;
1043                         break;
1044                 default:
1045                         cur.idx() = ((nrows() - 1) / 2 + 1) * ncols() - 1;
1046         }
1047         // If we are in a multicolumn cell, move to the "real" cell
1048         while (cellinfo_[cur.idx()].multi_ == CELL_PART_OF_MULTICOLUMN) {
1049                 LASSERT(cur.idx() > 0, return false);
1050                 --cur.idx();
1051         }
1052         cur.pos() = cur.lastpos();
1053         return true;
1054 }
1055
1056
1057 bool InsetMathGrid::idxDelete(idx_type & idx)
1058 {
1059         // nothing to do if we have just one row
1060         if (nrows() == 1)
1061                 return false;
1062
1063         // nothing to do if we are in the middle of the last row of the inset
1064         if (idx + ncols() > nargs())
1065                 return false;
1066
1067         // try to delete entire sequence of ncols() empty cells if possible
1068         for (idx_type i = idx; i < idx + ncols(); ++i)
1069                 if (!cell(i).empty())
1070                         return false;
1071
1072         // move cells if necessary
1073         for (idx_type i = index(row(idx), 0); i < idx; ++i)
1074                 swap(cell(i), cell(i + ncols()));
1075
1076         delRow(row(idx));
1077
1078         if (idx >= nargs())
1079                 idx = nargs() - 1;
1080
1081         // undo effect of Ctrl-Tab (i.e. pull next cell)
1082         //if (idx + 1 != nargs())
1083         //      cell(idx).swap(cell(idx + 1));
1084
1085         // we handled the event..
1086         return true;
1087 }
1088
1089
1090 // reimplement old behaviour when pressing Delete in the last position
1091 // of a cell
1092 void InsetMathGrid::idxGlue(idx_type idx)
1093 {
1094         col_type c = col(idx);
1095         if (c + 1 == ncols()) {
1096                 if (row(idx) + 1 != nrows()) {
1097                         for (col_type cc = 0; cc < ncols(); ++cc)
1098                                 cell(idx).append(cell(idx + cc + 1));
1099                         delRow(row(idx) + 1);
1100                 }
1101         } else {
1102                 idx_type idx_next = idx + 1;
1103                 while (idx_next < nargs() &&
1104                        cellinfo_[idx_next].multi_ == CELL_PART_OF_MULTICOLUMN)
1105                         ++idx_next;
1106                 if (idx_next < nargs())
1107                         cell(idx).append(cell(idx_next));
1108                 col_type oldcol = c + 1;
1109                 for (col_type cc = c + 2; cc < ncols(); ++cc)
1110                         cell(idx - oldcol + cc) = cell(idx - oldcol + 1 + cc);
1111                 cell(idx - c + ncols() - 1).clear();
1112         }
1113 }
1114
1115
1116 InsetMathGrid::RowInfo const & InsetMathGrid::rowinfo(row_type row) const
1117 {
1118         return rowinfo_[row];
1119 }
1120
1121
1122 InsetMathGrid::RowInfo & InsetMathGrid::rowinfo(row_type row)
1123 {
1124         return rowinfo_[row];
1125 }
1126
1127
1128 bool InsetMathGrid::idxBetween(idx_type idx, idx_type from, idx_type to) const
1129 {
1130         row_type const ri = row(idx);
1131         row_type const r1 = min(row(from), row(to));
1132         row_type const r2 = max(row(from), row(to));
1133         col_type const ci = col(idx);
1134         col_type const c1 = min(col(from), col(to));
1135         col_type const c2 = max(col(from), col(to));
1136         return r1 <= ri && ri <= r2 && c1 <= ci && ci <= c2;
1137 }
1138
1139
1140 void InsetMathGrid::normalize(NormalStream & os) const
1141 {
1142         os << "[grid ";
1143         for (row_type row = 0; row < nrows(); ++row) {
1144                 os << "[row ";
1145                 for (col_type col = 0; col < ncols(); ++col) {
1146                         idx_type const i = index(row, col);
1147                         switch (cellinfo_[i].multi_) {
1148                         case CELL_NORMAL:
1149                                 os << "[cell " << cell(i) << ']';
1150                                 break;
1151                         case CELL_BEGIN_OF_MULTICOLUMN:
1152                                 os << "[cell colspan="
1153                                    << static_cast<int>(ncellcols(i)) << ' '
1154                                    << cell(i) << ']';
1155                                 break;
1156                         case CELL_PART_OF_MULTICOLUMN:
1157                                 break;
1158                         }
1159                 }
1160                 os << ']';
1161         }
1162         os << ']';
1163 }
1164
1165
1166 void InsetMathGrid::mathmlize(MathStream & os) const
1167 {
1168         bool const havetable = nrows() > 1 || ncols() > 1;
1169         if (havetable)
1170                 os << MTag("mtable");
1171         char const * const celltag = havetable ? "mtd" : "mrow";
1172         for (row_type row = 0; row < nrows(); ++row) {
1173                 if (havetable)
1174                         os << MTag("mtr");
1175                 for (col_type col = 0; col < ncols(); ++col) {
1176                         idx_type const i = index(row, col);
1177                         if (cellinfo_[i].multi_ != CELL_PART_OF_MULTICOLUMN) {
1178                                 col_type const cellcols = ncellcols(i);
1179                                 ostringstream attr;
1180                                 if (havetable && cellcols > 1)
1181                                         attr << "colspan='" << cellcols << '\'';
1182                                 os << MTag(celltag, attr.str());
1183                                 os << cell(index(row, col));
1184                                 os << ETag(celltag);
1185                         }
1186                 }
1187                 if (havetable)
1188                         os << ETag("mtr");
1189         }
1190         if (havetable)
1191                 os << ETag("mtable");
1192 }
1193
1194
1195 // FIXME XHTML
1196 // We need to do something about alignment here.
1197 void InsetMathGrid::htmlize(HtmlStream & os, string attrib) const
1198 {
1199         bool const havetable = nrows() > 1 || ncols() > 1;
1200         if (!havetable) {
1201                 os << cell(index(0, 0));
1202                 return;
1203         }
1204         os << MTag("table", attrib);
1205         for (row_type row = 0; row < nrows(); ++row) {
1206                 os << MTag("tr");
1207                 for (col_type col = 0; col < ncols(); ++col) {
1208                         idx_type const i = index(row, col);
1209                         if (cellinfo_[i].multi_ != CELL_PART_OF_MULTICOLUMN) {
1210                                 col_type const cellcols = ncellcols(i);
1211                                 ostringstream attr;
1212                                 if (cellcols > 1)
1213                                         attr << "colspan='" << cellcols << '\'';
1214                                 os << MTag("td", attr.str());
1215                                 os << cell(index(row, col));
1216                                 os << ETag("td");
1217                         }
1218                 }
1219                 os << ETag("tr");
1220         }
1221         os << ETag("table");
1222 }
1223
1224
1225 void InsetMathGrid::htmlize(HtmlStream & os) const
1226 {
1227         htmlize(os, "class='mathtable'");
1228 }
1229
1230
1231 void InsetMathGrid::validate(LaTeXFeatures & features) const
1232 {
1233         if (features.runparams().math_flavor == OutputParams::MathAsHTML
1234             && (nrows() > 1 || ncols() > 1)) {
1235                 // CSS taken from InsetMathCases
1236                 features.addCSSSnippet(
1237                         "table.mathtable{display: inline-block; text-align: center; border: none;"
1238                         "border-left: thin solid black; vertical-align: middle; padding-left: 0.5ex;}\n"
1239                         "table.mathtable td {text-align: left; border: none;}");
1240         }
1241         InsetMathNest::validate(features);
1242 }
1243
1244
1245 void InsetMathGrid::write(WriteStream & os) const
1246 {
1247         write(os, 0, 0, nrows(), ncols());
1248 }
1249
1250 void InsetMathGrid::write(WriteStream & os,
1251                           row_type beg_row, col_type beg_col,
1252                           row_type end_row, col_type end_col) const
1253 {
1254         MathEnsurer ensurer(os, false);
1255         docstring eol;
1256         for (row_type row = beg_row; row < end_row; ++row) {
1257                 os << verboseHLine(rowinfo_[row].lines_);
1258                 // don't write & and empty cells at end of line,
1259                 // unless there are vertical lines
1260                 col_type lastcol = 0;
1261                 bool emptyline = true;
1262                 bool last_eoln = true;
1263                 for (col_type col = beg_col; col < end_col; ++col) {
1264                         idx_type const idx = index(row, col);
1265                         bool const empty_cell = cell(idx).empty();
1266                         if (!empty_cell || cellinfo_[idx].multi_ != CELL_NORMAL)
1267                                 last_eoln = false;
1268                         if (!empty_cell || cellinfo_[idx].multi_ != CELL_NORMAL ||
1269                             colinfo_[col + 1].lines_) {
1270                                 lastcol = col + 1;
1271                                 emptyline = false;
1272                         }
1273                 }
1274                 for (col_type col = beg_col; col < end_col;) {
1275                         int nccols = 1;
1276                         idx_type const idx = index(row, col);
1277                         TexRow::RowEntry entry = TexRow::mathEntry(id(),idx);
1278                         os.texrow().start(entry);
1279                         if (col >= lastcol) {
1280                                 ++col;
1281                                 continue;
1282                         }
1283                         Changer dummy = os.changeRowEntry(entry);
1284                         if (cellinfo_[idx].multi_ == CELL_BEGIN_OF_MULTICOLUMN) {
1285                                 size_t s = col + 1;
1286                                 while (s < ncols() &&
1287                                        cellinfo_[index(row, s)].multi_ == CELL_PART_OF_MULTICOLUMN)
1288                                         s++;
1289                                 nccols = s - col;
1290                                 os << "\\multicolumn{" << nccols
1291                                    << "}{" << cellinfo_[idx].align_
1292                                    << "}{";
1293                         }
1294                         os << cell(idx);
1295                         if (os.pendingBrace())
1296                                 ModeSpecifier specifier(os, TEXT_MODE);
1297                         if (cellinfo_[idx].multi_ == CELL_BEGIN_OF_MULTICOLUMN)
1298                                 os << '}';
1299                         os << eocString(col + nccols - 1, lastcol);
1300                         col += nccols;
1301                 }
1302                 eol = eolString(row, os.fragile(), os.latex(), last_eoln);
1303                 os << eol;
1304                 // append newline only if line wasn't completely empty
1305                 // and the formula is not written on a single line
1306                 bool const empty = emptyline && eol.empty();
1307                 if (!empty && nrows() > 1)
1308                         os << "\n";
1309         }
1310         // @TODO use end_row instead of nrows() ?
1311         docstring const s = verboseHLine(rowinfo_[nrows()].lines_);
1312         if (!s.empty()) {
1313                 if (eol.empty()) {
1314                         if (os.fragile())
1315                                 os << "\\protect";
1316                         os << "\\\\";
1317                 }
1318                 os << s;
1319         }
1320 }
1321
1322
1323 int InsetMathGrid::colsep() const
1324 {
1325         return 6;
1326 }
1327
1328
1329 int InsetMathGrid::rowsep() const
1330 {
1331         return 6;
1332 }
1333
1334
1335 int InsetMathGrid::hlinesep() const
1336 {
1337         return 3;
1338 }
1339
1340
1341 int InsetMathGrid::vlinesep() const
1342 {
1343         return 3;
1344 }
1345
1346
1347 int InsetMathGrid::border() const
1348 {
1349         return 1;
1350 }
1351
1352
1353 void InsetMathGrid::splitCell(Cursor & cur)
1354 {
1355         if (cur.idx() == cur.lastidx())
1356                 return;
1357         MathData ar = cur.cell();
1358         ar.erase(0, cur.pos());
1359         cur.cell().erase(cur.pos(), cur.lastpos());
1360         ++cur.idx();
1361         while (cur.idx() << nargs() &&
1362                cellinfo_[cur.idx()].multi_ == CELL_BEGIN_OF_MULTICOLUMN)
1363                 ++cur.idx();
1364         cur.pos() = 0;
1365         cur.cell().insert(0, ar);
1366 }
1367
1368
1369 char InsetMathGrid::displayColAlign(idx_type idx) const
1370 {
1371         if (cellinfo_[idx].multi_ == CELL_BEGIN_OF_MULTICOLUMN) {
1372                 // align_ may also contain lines like "||r|", so this is
1373                 // not complete, but we catch at least the simple cases.
1374                 if (cellinfo_[idx].align_ == "c")
1375                         return 'c';
1376                 if (cellinfo_[idx].align_ == "l")
1377                         return 'l';
1378                 if (cellinfo_[idx].align_ == "r")
1379                         return 'r';
1380         }
1381         return colinfo_[col(idx)].align_;
1382 }
1383
1384
1385 int InsetMathGrid::displayColSpace(col_type col) const
1386 {
1387         return colinfo_[col].skip_;
1388 }
1389
1390 void InsetMathGrid::doDispatch(Cursor & cur, FuncRequest & cmd)
1391 {
1392         //lyxerr << "*** InsetMathGrid: request: " << cmd << endl;
1393
1394         Parse::flags parseflg = Parse::QUIET | Parse::USETEXT;
1395
1396         FuncCode const act = cmd.action();
1397         switch (act) {
1398
1399         // insert file functions
1400         case LFUN_LINE_DELETE_FORWARD:
1401                 cur.recordUndoInset();
1402                 //autocorrect_ = false;
1403                 //macroModeClose();
1404                 //if (selection_) {
1405                 //      selDel();
1406                 //      break;
1407                 //}
1408                 if (nrows() > 1)
1409                         delRow(cur.row());
1410                 if (cur.idx() > cur.lastidx())
1411                         cur.idx() = cur.lastidx();
1412                 if (cur.pos() > cur.lastpos())
1413                         cur.pos() = cur.lastpos();
1414                 break;
1415
1416         case LFUN_CELL_SPLIT:
1417                 cur.recordUndo();
1418                 splitCell(cur);
1419                 break;
1420
1421         case LFUN_CELL_BACKWARD:
1422                 // See below.
1423                 cur.selection(false);
1424                 if (!idxPrev(cur)) {
1425                         cmd = FuncRequest(LFUN_FINISHED_BACKWARD);
1426                         cur.undispatched();
1427                 }
1428                 break;
1429
1430         case LFUN_CELL_FORWARD:
1431                 // Can't handle selection by additional 'shift' as this is
1432                 // hard bound to LFUN_CELL_BACKWARD
1433                 cur.selection(false);
1434                 if (!idxNext(cur)) {
1435                         cmd = FuncRequest(LFUN_FINISHED_FORWARD);
1436                         cur.undispatched();
1437                 }
1438                 break;
1439
1440         case LFUN_NEWLINE_INSERT: {
1441                 cur.recordUndoInset();
1442                 row_type const r = cur.row();
1443                 addRow(r);
1444
1445                 // split line
1446                 for (col_type c = col(cur.idx()) + 1; c < ncols(); ++c)
1447                         swap(cell(index(r, c)), cell(index(r + 1, c)));
1448
1449                 // split cell
1450                 splitCell(cur);
1451                 if (ncols() > 1)
1452                         swap(cell(cur.idx()), cell(cur.idx() + ncols() - 1));
1453                 if (cur.idx() > 0)
1454                         --cur.idx();
1455                 cur.pos() = cur.lastpos();
1456                 cur.forceBufferUpdate();
1457                 //mathcursor->normalize();
1458                 //cmd = FuncRequest(LFUN_FINISHED_BACKWARD);
1459                 break;
1460         }
1461
1462         case LFUN_TABULAR_FEATURE: {
1463                 cur.recordUndoInset();
1464                 //lyxerr << "handling tabular-feature " << to_utf8(cmd.argument()) << endl;
1465                 istringstream is(to_utf8(cmd.argument()));
1466                 string s;
1467                 is >> s;
1468                 if (s == "valign-top")
1469                         setVerticalAlignment('t');
1470                 else if (s == "valign-middle")
1471                         setVerticalAlignment('c');
1472                 else if (s == "valign-bottom")
1473                         setVerticalAlignment('b');
1474                 else if (s == "align-left")
1475                         setHorizontalAlignment('l', cur.col());
1476                 else if (s == "align-right")
1477                         setHorizontalAlignment('r', cur.col());
1478                 else if (s == "align-center")
1479                         setHorizontalAlignment('c', cur.col());
1480                 else if (s == "append-row")
1481                         for (int i = 0, n = extractInt(is); i < n; ++i)
1482                                 addRow(cur.row());
1483                 else if (s == "delete-row") {
1484                         cur.clearSelection(); // bug 4323
1485                         for (int i = 0, n = extractInt(is); i < n; ++i) {
1486                                 delRow(cur.row());
1487                                 if (cur.idx() >= nargs())
1488                                         cur.idx() -= ncols();
1489                         }
1490                         cur.pos() = 0; // trick, see below
1491                 }
1492                 else if (s == "copy-row") {
1493                         // Here (as later) we save the cursor col/row
1494                         // in order to restore it after operation.
1495                         row_type const r = cur.row();
1496                         col_type const c = cur.col();
1497                         for (int i = 0, n = extractInt(is); i < n; ++i)
1498                                 copyRow(cur.row());
1499                         cur.idx() = index(r, c);
1500                 }
1501                 else if (s == "swap-row") {
1502                         swapRow(cur.row());
1503                         // Trick to suppress same-idx-means-different-cell
1504                         // assertion crash:
1505                         cur.pos() = 0;
1506                 }
1507                 else if (s == "add-hline-above")
1508                         rowinfo_[cur.row()].lines_++;
1509                 else if (s == "add-hline-below")
1510                         rowinfo_[cur.row()+1].lines_++;
1511                 else if (s == "delete-hline-above")
1512                         rowinfo_[cur.row()].lines_--;
1513                 else if (s == "delete-hline-below")
1514                         rowinfo_[cur.row()+1].lines_--;
1515                 else if (s == "append-column") {
1516                         row_type const r = cur.row();
1517                         col_type const c = cur.col();
1518                         for (int i = 0, n = extractInt(is); i < n; ++i)
1519                                 addCol(cur.col() + 1);
1520                         cur.idx() = index(r, c);
1521                 }
1522                 else if (s == "delete-column") {
1523                         cur.clearSelection(); // bug 4323
1524                         row_type const r = cur.row();
1525                         col_type const c = cur.col();
1526                         for (int i = 0, n = extractInt(is); i < n; ++i)
1527                                 delCol(col(cur.idx()));
1528                         cur.idx() = index(r, min(c, cur.ncols() - 1));
1529                         cur.pos() = 0; // trick, see above
1530                 }
1531                 else if (s == "copy-column") {
1532                         row_type const r = cur.row();
1533                         col_type const c = cur.col();
1534                         copyCol(cur.col());
1535                         cur.idx() = index(r, c);
1536                 }
1537                 else if (s == "swap-column") {
1538                         swapCol(cur.col());
1539                         cur.pos() = 0; // trick, see above
1540                 }
1541                 else if (s == "add-vline-left") {
1542                         colinfo_[cur.col()].lines_++;
1543                         if (!colinfo_[cur.col()].special_.empty())
1544                                 colinfo_[cur.col()].special_ += '|';
1545                 }
1546                 else if (s == "add-vline-right") {
1547                         colinfo_[cur.col()+1].lines_++;
1548                         if (!colinfo_[cur.col()+1].special_.empty())
1549                                 colinfo_[cur.col()+1].special_.insert(0, 1, '|');
1550                 }
1551                 else if (s == "delete-vline-left") {
1552                         colinfo_[cur.col()].lines_--;
1553                         docstring & special = colinfo_[cur.col()].special_;
1554                         if (!special.empty()) {
1555                                 docstring::size_type i = special.rfind('|');
1556                                 LASSERT(i != docstring::npos, break);
1557                                 special.erase(i, 1);
1558                         }
1559                 }
1560                 else if (s == "delete-vline-right") {
1561                         colinfo_[cur.col()+1].lines_--;
1562                         docstring & special = colinfo_[cur.col()+1].special_;
1563                         if (!special.empty()) {
1564                                 docstring::size_type i = special.find('|');
1565                                 LASSERT(i != docstring::npos, break);
1566                                 special.erase(i, 1);
1567                         }
1568                 }
1569                 else {
1570                         cur.undispatched();
1571                         break;
1572                 }
1573                 // perhaps this should be FINISHED_BACKWARD -- just for clarity?
1574                 //lyxerr << "returning FINISHED_LEFT" << endl;
1575                 break;
1576         }
1577
1578         case LFUN_CLIPBOARD_PASTE:
1579                 parseflg |= Parse::VERBATIM;
1580                 // fall through
1581         case LFUN_PASTE: {
1582                 if (cur.currentMode() != MATH_MODE)
1583                         parseflg |= Parse::TEXTMODE;
1584                 cur.message(_("Paste"));
1585                 cap::replaceSelection(cur);
1586                 docstring topaste;
1587                 if (cmd.argument().empty() && !theClipboard().isInternal())
1588                         topaste = theClipboard().getAsText(frontend::Clipboard::PlainTextType);
1589                 else {
1590                         idocstringstream is(cmd.argument());
1591                         int n = 0;
1592                         is >> n;
1593                         topaste = cap::selection(n, buffer().params().documentClassPtr());
1594                 }
1595                 InsetMathGrid grid(buffer_, 1, 1);
1596                 if (!topaste.empty())
1597                         if ((topaste.size() == 1 && isAscii(topaste))
1598                             || !mathed_parse_normal(grid, topaste, parseflg)) {
1599                                 resetGrid(grid);
1600                                 mathed_parse_normal(grid, topaste, parseflg | Parse::VERBATIM);
1601                         }
1602
1603                 bool hline_enabled = false;
1604                 FuncRequest fr = FuncRequest(LFUN_TABULAR_FEATURE, "add-hline-above");
1605                 FuncStatus status;
1606                 if (getStatus(cur, fr, status))
1607                         hline_enabled = status.enabled();
1608                 if (grid.nargs() == 1) {
1609                         // single cell/part of cell
1610                         cur.recordUndoInset();
1611                         cur.cell().insert(cur.pos(), grid.cell(0));
1612                         cur.pos() += grid.cell(0).size();
1613                         if (hline_enabled)
1614                                 rowinfo_[cur.row()].lines_ += grid.rowinfo_[0].lines_;
1615                         else {
1616                                 for (unsigned int l = 0; l < grid.rowinfo_[0].lines_; ++l) {
1617                                          cur.cell().insert(0,
1618                                                 MathAtom(new InsetMathUnknown(from_ascii("\\hline"))));
1619                                          cur.pos()++;
1620                                 }
1621                         }
1622                 } else {
1623                         // multiple cells
1624                         cur.recordUndoInset();
1625                         col_type const numcols =
1626                                 min(grid.ncols(), ncols() - col(cur.idx()));
1627                         row_type const numrows =
1628                                 min(grid.nrows(), nrows() - cur.row());
1629                         for (row_type r = 0; r < numrows; ++r) {
1630                                 for (col_type c = 0; c < numcols; ++c) {
1631                                         idx_type i = index(r + cur.row(), c + col(cur.idx()));
1632                                         cell(i).insert(0, grid.cell(grid.index(r, c)));
1633                                 }
1634                                 if (hline_enabled)
1635                                         rowinfo_[r].lines_ += grid.rowinfo_[r].lines_;
1636                                 else {
1637                                         for (unsigned int l = 0; l < grid.rowinfo_[r].lines_; ++l) {
1638                                                 idx_type i = index(r + cur.row(), 0);
1639                                                 cell(i).insert(0,
1640                                                         MathAtom(new InsetMathUnknown(from_ascii("\\hline"))));
1641                                         }
1642                                 }
1643                                 // append the left over horizontal cells to the last column
1644                                 idx_type i = index(r + cur.row(), ncols() - 1);
1645                                 for (InsetMath::col_type c = numcols; c < grid.ncols(); ++c)
1646                                         cell(i).append(grid.cell(grid.index(r, c)));
1647                         }
1648                         // append the left over vertical cells to the last _cell_
1649                         idx_type i = nargs() - 1;
1650                         for (row_type r = numrows; r < grid.nrows(); ++r) {
1651                                 for (col_type c = 0; c < grid.ncols(); ++c)
1652                                         cell(i).append(grid.cell(grid.index(r, c)));
1653                                 if (hline_enabled)
1654                                         rowinfo_[r].lines_ += grid.rowinfo_[r].lines_;
1655                                 else {
1656                                         for (unsigned int l = 0; l < grid.rowinfo_[r].lines_; ++l) {
1657                                                 cell(i).insert(0,
1658                                                         MathAtom(new InsetMathUnknown(from_ascii("\\hline"))));
1659                                         }
1660                                 }
1661                         }
1662                 }
1663                 cur.clearSelection(); // bug 393
1664                 // FIXME audit setBuffer calls
1665                 cur.inset().setBuffer(*buffer_);
1666                 cur.forceBufferUpdate();
1667                 cur.finishUndo();
1668                 break;
1669         }
1670
1671         case LFUN_LINE_BEGIN:
1672                 cur.screenUpdateFlags(Update::Decoration | Update::FitCursor);
1673                 // fall through
1674         case LFUN_LINE_BEGIN_SELECT:
1675                 cur.selHandle(act == LFUN_WORD_BACKWARD_SELECT ||
1676                                 act == LFUN_WORD_LEFT_SELECT ||
1677                                 act == LFUN_LINE_BEGIN_SELECT);
1678                 cur.macroModeClose();
1679                 if (cur.pos() != 0) {
1680                         cur.pos() = 0;
1681                 } else if (cur.idx() % cur.ncols() != 0) {
1682                         cur.idx() -= cur.idx() % cur.ncols();
1683                         cur.pos() = 0;
1684                 } else if (cur.idx() != 0) {
1685                         cur.idx() = 0;
1686                         cur.pos() = 0;
1687                 } else {
1688                         cmd = FuncRequest(LFUN_FINISHED_BACKWARD);
1689                         cur.undispatched();
1690                 }
1691                 break;
1692
1693         case LFUN_LINE_END:
1694                 cur.screenUpdateFlags(Update::Decoration | Update::FitCursor);
1695                 // fall through
1696         case LFUN_LINE_END_SELECT:
1697                 cur.selHandle(act == LFUN_WORD_FORWARD_SELECT ||
1698                                 act == LFUN_WORD_RIGHT_SELECT ||
1699                                 act == LFUN_LINE_END_SELECT);
1700                 cur.macroModeClose();
1701                 cur.clearTargetX();
1702                 if (cur.pos() != cur.lastpos()) {
1703                         cur.pos() = cur.lastpos();
1704                 } else if ((cur.idx() + 1) % cur.ncols() != 0) {
1705                         cur.idx() += cur.ncols() - 1 - cur.idx() % cur.ncols();
1706                         cur.pos() = cur.lastpos();
1707                 } else if (cur.idx() != cur.lastidx()) {
1708                         cur.idx() = cur.lastidx();
1709                         cur.pos() = cur.lastpos();
1710                 } else {
1711                         cmd = FuncRequest(LFUN_FINISHED_FORWARD);
1712                         cur.undispatched();
1713                 }
1714                 break;
1715
1716         default:
1717                 InsetMathNest::doDispatch(cur, cmd);
1718         }
1719 }
1720
1721
1722 bool InsetMathGrid::getStatus(Cursor & cur, FuncRequest const & cmd,
1723                 FuncStatus & status) const
1724 {
1725         switch (cmd.action()) {
1726         case LFUN_TABULAR_FEATURE: {
1727                 string s = cmd.getArg(0);
1728                 if (&cur.inset() != this) {
1729                         // Table actions requires that the cursor is _inside_ the
1730                         // table.
1731                         status.setEnabled(false);
1732                         status.message(from_utf8(N_("Cursor not in table")));
1733                         return true;
1734                 }
1735                 if (nrows() <= 1 && (s == "delete-row" || s == "swap-row")) {
1736                         status.setEnabled(false);
1737                         status.message(from_utf8(N_("Only one row")));
1738                         return true;
1739                 }
1740                 if (ncols() <= 1 &&
1741                     (s == "delete-column" || s == "swap-column")) {
1742                         status.setEnabled(false);
1743                         status.message(from_utf8(N_("Only one column")));
1744                         return true;
1745                 }
1746                 if ((rowinfo_[cur.row()].lines_ == 0 &&
1747                      s == "delete-hline-above") ||
1748                     (rowinfo_[cur.row() + 1].lines_ == 0 &&
1749                      s == "delete-hline-below")) {
1750                         status.setEnabled(false);
1751                         status.message(from_utf8(N_("No hline to delete")));
1752                         return true;
1753                 }
1754
1755                 if ((colinfo_[cur.col()].lines_ == 0 &&
1756                      s == "delete-vline-left") ||
1757                     (colinfo_[cur.col() + 1].lines_ == 0 &&
1758                      s == "delete-vline-right")) {
1759                         status.setEnabled(false);
1760                         status.message(from_utf8(N_("No vline to delete")));
1761                         return true;
1762                 }
1763                 if (s == "valign-top" || s == "valign-middle" ||
1764                     s == "valign-bottom" || s == "align-left" ||
1765                     s == "align-right" || s == "align-center") {
1766                         status.setEnabled(true);
1767                         char const ha = horizontalAlignment(cur.col());
1768                         char const va = verticalAlignment();
1769                         status.setOnOff((s == "align-left" && ha == 'l')
1770                                         || (s == "align-right"   && ha == 'r')
1771                                         || (s == "align-center"  && ha == 'c')
1772                                         || (s == "valign-top"    && va == 't')
1773                                         || (s == "valign-bottom" && va == 'b')
1774                                         || (s == "valign-middle" && va == 'c'));
1775                         return true;
1776                 }
1777                 if (s == "append-row" || s == "delete-row" ||
1778                     s == "copy-row" || s == "swap-row" ||
1779                     s == "add-hline-above" || s == "add-hline-below" ||
1780                     s == "delete-hline-above" || s == "delete-hline-below" ||
1781                     s == "append-column" || s == "delete-column" ||
1782                     s == "copy-column" || s == "swap-column" ||
1783                     s == "add-vline-left" || s == "add-vline-right" ||
1784                     s == "delete-vline-left" || s == "delete-vline-right") {
1785                         status.setEnabled(true);
1786                 } else {
1787                         status.setEnabled(false);
1788                         status.message(bformat(
1789                             from_utf8(N_("Unknown tabular feature '%1$s'")),
1790                             from_utf8(s)));
1791                 }
1792
1793 #if 0
1794                 // FIXME: What did this code do?
1795                 // Please check whether it is still needed!
1796                 // should be more precise
1797                 if (v_align_ == '\0') {
1798                         status.enable(true);
1799                         break;
1800                 }
1801                 if (cmd.argument().empty()) {
1802                         status.enable(false);
1803                         break;
1804                 }
1805                 if (!contains("tcb", cmd.argument()[0])) {
1806                         status.enable(false);
1807                         break;
1808                 }
1809                 status.setOnOff(cmd.argument()[0] == v_align_);
1810                 status.setEnabled(true);
1811 #endif
1812                 return true;
1813         }
1814
1815         case LFUN_CELL_SPLIT:
1816                 status.setEnabled(cur.idx() != cur.lastidx());
1817                 return true;
1818
1819         case LFUN_CELL_BACKWARD:
1820         case LFUN_CELL_FORWARD:
1821                 status.setEnabled(true);
1822                 return true;
1823
1824         default:
1825                 break;
1826         }
1827         return InsetMathNest::getStatus(cur, cmd, status);
1828 }
1829
1830
1831 // static
1832 char InsetMathGrid::colAlign(HullType type, col_type col)
1833 {
1834         switch (type) {
1835         case hullEqnArray:
1836                 return "rcl"[col % 3];
1837
1838         case hullMultline:
1839         case hullGather:
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