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
  14 namespace {
  15
  16 ///
  17 int const MATH_COLSEP = 10;
  18 ///
  19 int const MATH_ROWSEP = 10;
  20 ///
  21 int const MATH_BORDER = 2;
  22
  23 }
  24
  25
  26 using namespace std;
  27
  28
  29 MathGridInset::RowInfo::RowInfo()
  30         : upperline_(false), lowerline_(false)
  31 {}
  32
  33
  34 MathGridInset::ColInfo::ColInfo()
  35         : h_align_('c'), leftline_(false), rightline_(false)
  36 {}
  37
  38
  39 MathGridInset::MathGridInset(int m, int n, string const & nm, MathInsetTypes ot)
  40         : MathInset(nm, ot, m * n), rowinfo_(n), colinfo_(m), v_align_('c')
  41 {
  42         if (m <= 0)
  43                 lyxerr << "positve number of columns expected\n";
  44         if (n <= 0)
  45                 lyxerr << "positve number of rows expected\n";
  46 }
  47
  48
  49 int MathGridInset::index(int row, int col) const
  50 {
  51         return col + ncols() * row;
  52 }
  53
  54
  55 void MathGridInset::halign(string const & hh)
  56 {
  57         int n = hh.size();
  58         if (n > ncols())
  59                 n = ncols();
  60         for (int i = 0; i < n; ++i)
  61                 colinfo_[i].h_align_ = hh[i];
  62 }
  63
  64 void MathGridInset::halign(char h, int col)
  65 {
  66         colinfo_[col].h_align_ = h;
  67 }
  68
  69 char MathGridInset::halign(int col) const
  70 {
  71         return colinfo_[col].h_align_;
  72 }
  73
  74 void MathGridInset::valign(char c)
  75 {
  76         v_align_ = c;
  77 }
  78
  79 char MathGridInset::valign() const
  80 {
  81         return v_align_;
  82 }
  83
  84 void MathGridInset::Metrics(MathStyles st)
  85 {
  86         // let the cells adjust themselves
  87         MathInset::Metrics(st);
  88         size_ = st;
  89
  90         // adjust vertical structure
  91         for (int row = 0; row < nrows(); ++row) {
  92                 int asc  = 0;
  93                 int desc = 0;
  94                 for (int col = 0; col < ncols(); ++col) {
  95                         MathXArray const & c = xcell(index(row, col));
  96                         asc  = max(asc,  c.ascent());
  97                         desc = max(desc, c.descent());
  98                 }
  99                 rowinfo_[row].ascent_  = asc;
 100                 rowinfo_[row].descent_ = desc;
 101
 102                 if (row)
 103                         rowinfo_[row].offset_ =
 104                                 rowinfo_[row - 1].offset_ +
 105                                 rowinfo_[row - 1].descent_ +
 106                                 MATH_ROWSEP +
 107                                 rowinfo_[row].ascent_;
 108                 else
 109                         rowinfo_[row].offset_ = 0;
 110         }
 111
 112         // adjust vertical offset
 113         int h = 0;
 114         switch (v_align_) {
 115         case 't':
 116                 h = 0;
 117                 break;
 118         case 'b':
 119                 h = rowinfo_.back().offset_;
 120                 break;
 121         default:
 122                 h = rowinfo_.back().offset_ / 2;
 123         }
 124
 125         for (int row = 0; row < nrows(); ++row) {
 126                 rowinfo_[row].offset_ -= h;
 127                 rowinfo_[row].offset_ += MATH_BORDER;
 128         }
 129
 130         // adjust horizontal structure
 131         for (int col = 0; col < ncols(); ++col) {
 132                 int wid  = 0;
 133                 for (int row = 0; row < nrows(); ++row)
 134                         wid = max(wid, xcell(index(row, col)).width());
 135                 colinfo_[col].width_  = wid;
 136                 colinfo_[col].offset_ = colinfo_[col].width_;
 137
 138                 if (col)
 139                         colinfo_[col].offset_ =
 140                                 colinfo_[col - 1].offset_ + colinfo_[col - 1].width_ + MATH_COLSEP;
 141                 else
 142                         colinfo_[col].offset_ = 0;
 143
 144                 colinfo_[col].offset_ += MATH_BORDER;
 145         }
 146
 147         width_   =   colinfo_.back().offset_  + colinfo_.back().width_;
 148         ascent_  = - rowinfo_.front().offset_ + rowinfo_.front().ascent_;
 149         descent_ =   rowinfo_.back().offset_  + rowinfo_.back().descent_;
 150
 151 /*
 152         // Increase ws_[i] for 'R' columns (except the first one)
 153         for (int i = 1; i < nc_; ++i)
 154                 if (h_align_[i] == 'R')
 155                         ws_[i] += 10 * df_width;
 156         // Increase ws_[i] for 'C' column
 157         if (h_align_[0] == 'C')
 158                 if (ws_[0] < 7 * workwidth / 8)
 159                         ws_[0] = 7 * workwidth / 8;
 160
 161         // Adjust local tabs
 162         width = MATH_COLSEP;
 163         for (cxrow = row_.begin(); cxrow; ++cxrow) {
 164                 int rg = MATH_COLSEP;
 165                 int lf = 0;
 166                 for (int i = 0; i < nc_; ++i) {
 167                         bool isvoid = false;
 168                         if (cxrow->getTab(i) <= 0) {
 169                                 cxrow->setTab(i, df_width);
 170                                 isvoid = true;
 171                         }
 172                         switch (h_align_[i]) {
 173                         case 'l':
 174                                 lf = 0;
 175                                 break;
 176                         case 'c':
 177                                 lf = (ws_[i] - cxrow->getTab(i))/2;
 178                                 break;
 179                         case 'r':
 180                         case 'R':
 181                                 lf = ws_[i] - cxrow->getTab(i);
 182                                 break;
 183                         case 'C':
 184                                 if (cxrow == row_.begin())
 185                                         lf = 0;
 186                                 else if (cxrow.is_last())
 187                                         lf = ws_[i] - cxrow->getTab(i);
 188                                 else
 189                                         lf = (ws_[i] - cxrow->getTab(i))/2;
 190                                 break;
 191                         }
 192                         int const ww = (isvoid) ? lf : lf + cxrow->getTab(i);
 193                         cxrow->setTab(i, lf + rg);
 194                         rg = ws_[i] - ww + MATH_COLSEP;
 195                         if (cxrow == row_.begin())
 196                                 width += ws_[i] + MATH_COLSEP;
 197                 }
 198                 cxrow->setBaseline(cxrow->getBaseline() - ascent);
 199         }
 200 */
 201 }
 202
 203 void MathGridInset::draw(Painter & pain, int x, int y)
 204 {
 205         xo(x);
 206         yo(y);
 207         for (int row = 0; row < nrows(); ++row) {
 208                 int yy = y + rowinfo_[row].offset_;
 209                 for (int col = 0; col < ncols(); ++col) {
 210                         int xx = x + colinfo_[col].offset_;
 211                         char align = colinfo_[col].h_align_;
 212                         if (align == 'r' || align == 'R')
 213                                 xx += colinfo_[col].width_ - xcell(index(row, col)).width();
 214                         if (align == 'c' || align == 'C')
 215                                 xx += (colinfo_[col].width_ - xcell(index(row, col)).width()) / 2;
 216                         xcell(index(row, col)).draw(pain, xx, yy);
 217                 }
 218         }
 219 }
 220
 221
 222 void MathGridInset::Write(std::ostream & os, bool fragile) const
 223 {
 224         for (int row = 0; row < nrows(); ++row) {
 225                 if (row)
 226                         os << " \\\\\n";
 227                 for (int col = 0; col < ncols(); ++col) {
 228                         if (col)
 229                                 os << " & ";
 230                         cell(index(row, col)).Write(os, fragile);
 231                 }
 232         }
 233 }
 234
 235
 236 void MathGridInset::addRow(int row)
 237 {
 238         rowinfo_.insert(rowinfo_.begin() + row + 1, RowInfo());
 239         cells_.insert(cells_.begin() + (row + 1) * ncols(), ncols(), MathXArray());
 240 }
 241
 242 void MathGridInset::appendRow()
 243 {
 244         rowinfo_.push_back(RowInfo());
 245         for (int i = 0; i < ncols(); ++i)
 246                 cells_.push_back();
 247 }
 248
 249
 250 void MathGridInset::delRow(int row)
 251 {
 252         if (nrows() == 1)
 253                 return;
 254
 255         lyxerr << "delRow: nr: " << nrows() << "  nc: " << ncols()
 256                 << "  row: " << row << "\n";
 257
 258         cells_type::iterator it = cells_.begin() + row * ncols();
 259         cells_.erase(it, it + ncols());
 260
 261         rowinfo_.erase(rowinfo_.begin() + row);
 262 }
 263
 264
 265 void MathGridInset::addCol(int newcol)
 266 {
 267         int nc = ncols();
 268         int nr = nrows();
 269         cells_type new_cells = cells_type((nc + 1) * nr);
 270
 271         for (int row = 0; row < nr; ++row)
 272                 for (int col = 0; col < nc; ++col)
 273                         new_cells[row * (nc + 1) + col + (col > newcol)]
 274                                 = cells_[row * nc + col];
 275         swap(cells_, new_cells);
 276
 277         colinfo_.insert(colinfo_.begin() + newcol);
 278 }
 279
 280
 281 void MathGridInset::delCol(int col)
 282 {
 283         if (ncols() == 1)
 284                 return;
 285
 286         cells_type tmpcells;
 287         for (int i = 0; i < nargs(); ++i)
 288                 if (i % ncols() != col)
 289                         tmpcells.push_back(cells_[i]);
 290         swap(cells_, tmpcells);
 291
 292         colinfo_.erase(colinfo_.begin() + col);
 293 }
 294
 295
 296 bool MathGridInset::idxUp(int & idx, int & pos) const
 297 {
 298         if (idx < ncols())
 299                 return false;
 300         idx -= ncols();
 301         pos = 0;
 302         return true;
 303 }
 304
 305
 306 bool MathGridInset::idxDown(int & idx, int & pos) const
 307 {
 308         if (idx >= ncols() * (nrows() - 1))
 309                 return false;
 310         idx += ncols();
 311         pos = 0;
 312         return true;
 313 }
 314
 315
 316 bool MathGridInset::idxLeft(int & idx, int & pos) const
 317 {
 318         // leave matrix if on the left hand edge
 319         if (col(idx) == 0)
 320                 return false;
 321         idx--;
 322         pos = cell(idx).size();
 323         return true;
 324 }
 325
 326
 327 bool MathGridInset::idxRight(int & idx, int & pos) const
 328 {
 329         // leave matrix if on the right hand edge
 330         if (col(idx) == ncols() - 1)
 331                 return false;
 332         idx++;
 333         pos = 0;
 334         return true;
 335 }
 336
 337
 338 bool MathGridInset::idxFirst(int & idx, int & pos) const
 339 {
 340         switch (v_align_) {
 341                 case 't':
 342                         idx = 0;
 343                         break;
 344                 case 'b':
 345                         idx = (nrows() - 1) * ncols();
 346                         break;
 347                 default:
 348                         idx = (nrows() / 2) * ncols();
 349         }
 350         pos = 0;
 351         return true;
 352 }
 353
 354
 355 bool MathGridInset::idxLast(int & idx, int & pos) const
 356 {
 357         switch (v_align_) {
 358                 case 't':
 359                         idx = ncols() - 1;
 360                         break;
 361                 case 'b':
 362                         idx = nargs() - 1;
 363                         break;
 364                 default:
 365                         idx = (nrows() / 2 + 1) * ncols() - 1;
 366         }
 367         pos = cell(idx).size();
 368         return true;
 369 }
 370
 371
 372
 373 MathGridInset::RowInfo const & MathGridInset::rowinfo(int i) const
 374 {
 375         return rowinfo_[i];
 376 }
 377
 378
 379 MathGridInset::RowInfo & MathGridInset::rowinfo(int i)
 380 {
 381         return rowinfo_[i];
 382 }