src/mathed/math_grid.C

   1 #include <config.h>
   2
   3 #ifdef __GNUG__
   4 #pragma implementation
   5 #endif
   6
   7 #include "math_grid.h"
   8 #include "support/LOstream.h"
   9 #include "debug.h"
  10 #include "Painter.h"
  11
  12
  13 namespace {
  14
  15 ///
  16 int const MATH_COLSEP = 10;
  17 ///
  18 int const MATH_ROWSEP = 10;
  19 ///
  20 int const MATH_BORDER = 2;
  21
  22 }
  23
  24
  25 MathGridInset::RowInfo::RowInfo()
  26         : upperline_(false), lowerline_(false)
  27 {}
  28
  29
  30 MathGridInset::ColInfo::ColInfo()
  31         : h_align_('c'), leftline_(false), rightline_(false)
  32 {}
  33
  34
  35 MathGridInset::MathGridInset(int m, int n, string const & nm, MathInsetTypes ot)
  36         : MathInset(m * n, nm, ot), rowinfo_(n), colinfo_(m), v_align_('c')
  37 {
  38         if (m <= 0)
  39                 lyxerr << "positve number of columns expected\n";
  40         if (n <= 0)
  41                 lyxerr << "positve number of rows expected\n";
  42 }
  43
  44
  45 int MathGridInset::index(int row, int col) const
  46 {
  47         return col + ncols() * row;
  48 }
  49
  50
  51 void MathGridInset::halign(string const & hh)
  52 {
  53         int n = hh.size();
  54         if (n > ncols())
  55                 n = ncols();
  56         for (int i = 0; i < n; ++i)
  57                 colinfo_[i].h_align_ = hh[i];
  58 }
  59
  60 void MathGridInset::halign(char h, int col)
  61 {
  62         colinfo_[col].h_align_ = h;
  63 }
  64
  65 char MathGridInset::halign(int col) const
  66 {
  67         return colinfo_[col].h_align_;
  68 }
  69
  70 void MathGridInset::valign(char c)
  71 {
  72         v_align_ = c;
  73 }
  74
  75 char MathGridInset::valign() const
  76 {
  77         return v_align_;
  78 }
  79
  80 void MathGridInset::Metrics(MathStyles st)
  81 {
  82         // let the cells adjust themselves
  83         MathInset::Metrics(st);
  84         size_ = st;
  85
  86         // adjust vertical structure
  87         for (int row = 0; row < nrows(); ++row) {
  88                 int asc  = 0;
  89                 int desc = 0;
  90                 for (int col = 0; col < ncols(); ++col) {
  91                         MathXArray const & c = xcell(index(row, col));
  92                         asc  = std::max(asc,  c.ascent());
  93                         desc = std::max(desc, c.descent());
  94                 }
  95                 rowinfo_[row].ascent_  = asc;
  96                 rowinfo_[row].descent_ = desc;
  97
  98                 if (row)
  99                         rowinfo_[row].offset_ =
 100                                 rowinfo_[row - 1].offset_ +
 101                                 rowinfo_[row - 1].descent_ +
 102                                 MATH_ROWSEP +
 103                                 rowinfo_[row].ascent_;
 104                 else
 105                         rowinfo_[row].offset_ = 0;
 106         }
 107
 108         // adjust vertical offset
 109         int h = 0;
 110         switch (v_align_) {
 111         case 't':
 112                 h = 0;
 113                 break;
 114         case 'b':
 115                 h = rowinfo_.back().offset_;
 116                 break;
 117         default:
 118                 h = rowinfo_.back().offset_ / 2;
 119         }
 120
 121         for (int row = 0; row < nrows(); ++row) {
 122                 rowinfo_[row].offset_ -= h;
 123                 rowinfo_[row].offset_ += MATH_BORDER;
 124         }
 125
 126         // adjust horizontal structure
 127         for (int col = 0; col < ncols(); ++col) {
 128                 int wid  = 0;
 129                 for (int row = 0; row < nrows(); ++row)
 130                         wid = std::max(wid, xcell(index(row, col)).width());
 131                 colinfo_[col].width_  = wid;
 132                 colinfo_[col].offset_ = colinfo_[col].width_;
 133
 134                 if (col)
 135                         colinfo_[col].offset_ =
 136                                 colinfo_[col - 1].offset_ + colinfo_[col - 1].width_ + MATH_COLSEP;
 137                 else
 138                         colinfo_[col].offset_ = 0;
 139
 140                 colinfo_[col].offset_ += MATH_BORDER;
 141         }
 142
 143         width_   =   colinfo_.back().offset_  + colinfo_.back().width_;
 144         ascent_  = - rowinfo_.front().offset_ + rowinfo_.front().ascent_;
 145         descent_ =   rowinfo_.back().offset_  + rowinfo_.back().descent_;
 146
 147 /*
 148         // Increase ws_[i] for 'R' columns (except the first one)
 149         for (int i = 1; i < nc_; ++i)
 150                 if (h_align_[i] == 'R')
 151                         ws_[i] += 10 * df_width;
 152         // Increase ws_[i] for 'C' column
 153         if (h_align_[0] == 'C')
 154                 if (ws_[0] < 7 * workwidth / 8)
 155                         ws_[0] = 7 * workwidth / 8;
 156
 157         // Adjust local tabs
 158         width = MATH_COLSEP;
 159         for (cxrow = row_.begin(); cxrow; ++cxrow) {
 160                 int rg = MATH_COLSEP;
 161                 int lf = 0;
 162                 for (int i = 0; i < nc_; ++i) {
 163                         bool isvoid = false;
 164                         if (cxrow->getTab(i) <= 0) {
 165                                 cxrow->setTab(i, df_width);
 166                                 isvoid = true;
 167                         }
 168                         switch (h_align_[i]) {
 169                         case 'l':
 170                                 lf = 0;
 171                                 break;
 172                         case 'c':
 173                                 lf = (ws_[i] - cxrow->getTab(i))/2;
 174                                 break;
 175                         case 'r':
 176                         case 'R':
 177                                 lf = ws_[i] - cxrow->getTab(i);
 178                                 break;
 179                         case 'C':
 180                                 if (cxrow == row_.begin())
 181                                         lf = 0;
 182                                 else if (cxrow.is_last())
 183                                         lf = ws_[i] - cxrow->getTab(i);
 184                                 else
 185                                         lf = (ws_[i] - cxrow->getTab(i))/2;
 186                                 break;
 187                         }
 188                         int const ww = (isvoid) ? lf : lf + cxrow->getTab(i);
 189                         cxrow->setTab(i, lf + rg);
 190                         rg = ws_[i] - ww + MATH_COLSEP;
 191                         if (cxrow == row_.begin())
 192                                 width += ws_[i] + MATH_COLSEP;
 193                 }
 194                 cxrow->setBaseline(cxrow->getBaseline() - ascent);
 195         }
 196 */
 197 }
 198
 199 void MathGridInset::draw(Painter & pain, int x, int y)
 200 {
 201         xo(x);
 202         yo(y);
 203         for (int row = 0; row < nrows(); ++row) {
 204                 int yy = y + rowinfo_[row].offset_;
 205                 for (int col = 0; col < ncols(); ++col) {
 206                         int xx = x + colinfo_[col].offset_;
 207                         char align = colinfo_[col].h_align_;
 208                         if (align == 'r' || align == 'R')
 209                                 xx += colinfo_[col].width_ - xcell(index(row, col)).width();
 210                         if (align == 'c' || align == 'C')
 211                                 xx += (colinfo_[col].width_ - xcell(index(row, col)).width()) / 2;
 212                         xcell(index(row, col)).draw(pain, xx, yy);
 213                 }
 214         }
 215 }
 216
 217
 218 void MathGridInset::Write(std::ostream & os, bool fragile) const
 219 {
 220         for (int row = 0; row < nrows(); ++row) {
 221                 if (row)
 222                         os << " \\\\\n";
 223                 for (int col = 0; col < ncols(); ++col) {
 224                         if (col)
 225                                 os << " & ";
 226                         cell(index(row, col)).Write(os, fragile);
 227                 }
 228         }
 229 }
 230
 231
 232 void MathGridInset::addRow(int row)
 233 {
 234         rowinfo_.insert(rowinfo_.begin() + row + 1, RowInfo());
 235         cells_.insert(cells_.begin() + (row + 1) * ncols(), ncols(), MathXArray());
 236 }
 237
 238 void MathGridInset::appendRow()
 239 {
 240         rowinfo_.push_back(RowInfo());
 241         for (int i = 0; i < ncols(); ++i)
 242                 cells_.push_back(cells_type::value_type());
 243 }
 244
 245
 246 void MathGridInset::delRow(int row)
 247 {
 248         if (nrows() == 1)
 249                 return;
 250
 251         lyxerr << "delRow: nr: " << nrows() << "  nc: " << ncols()
 252                 << "  row: " << row << "\n";
 253
 254         cells_type::iterator it = cells_.begin() + row * ncols();
 255         cells_.erase(it, it + ncols());
 256
 257         rowinfo_.erase(rowinfo_.begin() + row);
 258 }
 259
 260
 261 void MathGridInset::addCol(int newcol)
 262 {
 263         int const nc = ncols();
 264         int const nr = nrows();
 265         cells_type new_cells((nc + 1) * nr);
 266
 267         for (int row = 0; row < nr; ++row)
 268                 for (int col = 0; col < nc; ++col)
 269                         new_cells[row * (nc + 1) + col + (col > newcol)]
 270                                 = cells_[row * nc + col];
 271         std::swap(cells_, new_cells);
 272
 273         colinfo_.insert(colinfo_.begin() + newcol, ColInfo());
 274 }
 275
 276
 277 void MathGridInset::delCol(int col)
 278 {
 279         if (ncols() == 1)
 280                 return;
 281
 282         cells_type tmpcells;
 283         for (int i = 0; i < nargs(); ++i)
 284                 if (i % ncols() != col)
 285                         tmpcells.push_back(cells_[i]);
 286         std::swap(cells_, tmpcells);
 287
 288         colinfo_.erase(colinfo_.begin() + col);
 289 }
 290
 291
 292 bool MathGridInset::idxUp(int & idx, int & pos) const
 293 {
 294         if (idx < ncols())
 295                 return false;
 296         idx -= ncols();
 297         pos = 0;
 298         return true;
 299 }
 300
 301
 302 bool MathGridInset::idxDown(int & idx, int & pos) const
 303 {
 304         if (idx >= ncols() * (nrows() - 1))
 305                 return false;
 306         idx += ncols();
 307         pos = 0;
 308         return true;
 309 }
 310
 311
 312 bool MathGridInset::idxLeft(int & idx, int & pos) const
 313 {
 314         // leave matrix if on the left hand edge
 315         if (col(idx) == 0)
 316                 return false;
 317         idx--;
 318         pos = cell(idx).size();
 319         return true;
 320 }
 321
 322
 323 bool MathGridInset::idxRight(int & idx, int & pos) const
 324 {
 325         // leave matrix if on the right hand edge
 326         if (col(idx) == ncols() - 1)
 327                 return false;
 328         idx++;
 329         pos = 0;
 330         return true;
 331 }
 332
 333
 334 bool MathGridInset::idxFirst(int & idx, int & pos) const
 335 {
 336         switch (v_align_) {
 337                 case 't':
 338                         idx = 0;
 339                         break;
 340                 case 'b':
 341                         idx = (nrows() - 1) * ncols();
 342                         break;
 343                 default:
 344                         idx = (nrows() / 2) * ncols();
 345         }
 346         pos = 0;
 347         return true;
 348 }
 349
 350
 351 bool MathGridInset::idxLast(int & idx, int & pos) const
 352 {
 353         switch (v_align_) {
 354                 case 't':
 355                         idx = ncols() - 1;
 356                         break;
 357                 case 'b':
 358                         idx = nargs() - 1;
 359                         break;
 360                 default:
 361                         idx = (nrows() / 2 + 1) * ncols() - 1;
 362         }
 363         pos = cell(idx).size();
 364         return true;
 365 }
 366
 367
 368
 369 MathGridInset::RowInfo const & MathGridInset::rowinfo(int i) const
 370 {
 371         return rowinfo_[i];
 372 }
 373
 374
 375 MathGridInset::RowInfo & MathGridInset::rowinfo(int i)
 376 {
 377         return rowinfo_[i];
 378 }