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