src/mathed/math_parinset.C

   1 #include <config.h>
   2
   3 #ifdef __GNUG__
   4 #pragma implementation
   5 #endif
   6
   7 #include "math_parinset.h"
   8 #include "math_iter.h"
   9 #include "array.h"
  10 #include "math_xiter.h"
  11 #include "LColor.h"
  12 #include "mathed/support.h"
  13 #include "Painter.h"
  14 #include "math_parser.h"
  15 #include "math_rowst.h"
  16 #include "math_parinset.h"
  17 #include "debug.h"
  18
  19 using std::endl;
  20
  21 extern int number_of_newlines;
  22
  23
  24 MathedRowSt * MathParInset::getRowSt() const
  25 {
  26         return 0;
  27 }
  28
  29
  30 MathParInset::MathParInset(short st, string const & nm, short ot)
  31         : MathedInset(nm, ot, st)
  32 {
  33         ascent = 8;
  34         width = 4;
  35         descent = 0;
  36         flag = 1;
  37         if (objtype == LM_OT_SCRIPT)
  38                 flag |= LMPF_SCRIPT;
  39 }
  40
  41
  42 MathedInset * MathParInset::Clone()
  43 {
  44         return new MathParInset(*this);
  45 }
  46
  47
  48 void MathParInset::setData(MathedArray const & a)
  49 {
  50         array = a;
  51
  52         // A standard paragraph shouldn't have any tabs nor CRs.
  53         MathedIter it(&array);
  54         while (it.OK()) {
  55                 char c = it.GetChar();
  56                 if (c == LM_TC_TAB || c == LM_TC_CR)
  57                         it.Delete();
  58                 else
  59                         it.Next();
  60         }
  61 }
  62
  63
  64 void
  65 MathParInset::draw(Painter & pain, int x, int y)
  66 {
  67         byte cxp = 0;
  68         int xp = 0;
  69         int asc = df_asc;
  70         int des = 0;
  71         bool limits = false;
  72
  73         xo_ = x;
  74         yo_ = y;
  75         MathedXIter data(this);
  76         if (array.empty()) {
  77                 //MathedXIter data(this);
  78                 data.GetPos(x, y);
  79                 pain.rectangle(x, y - df_asc, df_width, df_asc,
  80                                LColor::mathline);
  81                 return;
  82         }
  83         //MathedXIter data(this);
  84         data.GoBegin();
  85         while (data.OK()) {
  86                 data.GetPos(x, y);
  87                 byte const cx = data.GetChar();
  88                 if (cx >= ' ') {
  89                         string const s = data.GetString();
  90                         drawStr(pain, data.fcode(), size(), x, y, s);
  91                         mathed_char_height(LM_TC_CONST, size(), 'y', asc, des);
  92                         limits = false;
  93                 } else if (cx == 0) {
  94                         break;
  95                 } else if (MathIsInset(cx)) {
  96                         int yy = y;
  97                         MathedInset * p = data.GetInset();
  98                         if (cx == LM_TC_UP) {
  99                                 if (limits) {
 100                                         x -= (xp > p->Width()) ?
 101                                                 p->Width() + (xp - p->Width()) / 2 : xp;
 102                                         yy -= (asc + p->Descent() + 4);
 103                                 } else
 104                                         yy -= (p->Descent() > asc) ?
 105                                                 p->Descent() + 4 : asc;
 106                         } else if (cx == LM_TC_DOWN) {
 107                                 if (limits) {
 108                                         x -= (xp > p->Width()) ?
 109                                                 p->Width() + (xp - p->Width()) / 2 : xp;
 110                                         yy += des + p->Ascent() + 2;
 111                                 } else
 112                                         yy += des + p->Ascent() / 2;
 113                         } else {
 114                                 asc = p->Ascent();
 115                                 des = p->Descent();
 116                         }
 117                         p->draw(pain, x, yy);
 118                         if (cx != LM_TC_UP && cx != LM_TC_DOWN) {
 119                                 limits = p->GetLimits();
 120                                 if (limits)
 121                                         xp = p->Width();
 122                         }
 123                         data.Next();
 124                 } else if (cx == LM_TC_TAB) {
 125                         if (cxp == cx
 126                             || cxp == LM_TC_CR || data.IsFirst()) {
 127                                 pain.rectangle(x, y - df_asc,
 128                                                df_width, df_asc,
 129                                                LColor::mathline);
 130                         }
 131                         data.Next();
 132                         limits = false;
 133                 } else if (cx == LM_TC_CR) {
 134                         if (cxp == LM_TC_TAB
 135                             || cxp == LM_TC_CR || data.IsFirst()) {
 136                                 pain.rectangle(x, y - df_asc,
 137                                                df_width, df_asc,
 138                                                LColor::mathline);
 139                         }
 140                         data.Next();
 141                         limits = false;
 142                 } else {
 143                         lyxerr << "GMathed Error: Unrecognized code[" << cx << "]" << endl;
 144                         break;
 145                 }
 146
 147                 cxp = cx;
 148         }
 149         if (cxp == LM_TC_TAB || cxp == LM_TC_CR) {
 150                 data.GetPos(x, y);
 151                 pain.rectangle(x, y - df_asc, df_width, df_asc,
 152                                LColor::mathline);
 153         }
 154 }
 155
 156
 157 void
 158 MathParInset::Metrics()
 159 {
 160         byte cx;
 161         byte cxp = 0;
 162         int ls;
 163         int asc = df_asc;
 164         int des = 0;
 165         int tb = 0;
 166         int tab = 0;
 167
 168         bool limits = false;
 169
 170         ascent = df_asc;//mathed_char_height(LM_TC_VAR, size, 'I', asc, des);
 171         width = df_width;
 172         descent = 0;
 173         if (array.empty()) return;
 174
 175         ascent = 0;
 176         MathedXIter data(this);
 177         data.GoBegin();
 178         while (data.OK()) {
 179                 cx = data.GetChar();
 180                 if (cx >= ' ') {
 181                         string s = data.GetString();
 182                         mathed_string_height(data.fcode(),
 183                                              size(), s, asc, des);
 184                         if (asc > ascent) ascent = asc;
 185                         if (des > descent) descent = des;
 186                         limits = false;
 187                         mathed_char_height(LM_TC_CONST, size(), 'y', asc, des);
 188                 } else
 189                         if (MathIsInset(cx)) {
 190                                 MathedInset * p = data.GetInset();
 191                                 p->SetStyle(size());
 192                                 p->Metrics();
 193                                 if (cx == LM_TC_UP) {
 194                                         asc += (limits) ? p->Height() + 4: p->Ascent() +
 195                                                 ((p->Descent()>asc) ? p->Descent() - asc + 4: 0);
 196                                 } else
 197                                         if (cx == LM_TC_DOWN) {
 198                                                 des += ((limits) ? p->Height() + 4: p->Height() - p->Ascent() / 2);
 199                                         } else {
 200                                                 asc = p->Ascent();
 201                                                 des = p->Descent();
 202                                         }
 203                                 if (asc > ascent) ascent = asc;
 204                                 if (des > descent) descent = des;
 205                                 if (cx!= LM_TC_UP && cx!= LM_TC_DOWN)
 206                                         limits = p->GetLimits();
 207                                 data.Next();
 208                         } else
 209                                 if (cx == LM_TC_TAB) {
 210                                         int x, y;
 211                                         data.GetIncPos(x, y);
 212                                         if (data.IsFirst() || cxp == LM_TC_TAB || cxp == LM_TC_CR) {
 213                                                 if (ascent<df_asc) ascent = df_asc;
 214                                                 tb = x;
 215                                         }
 216                                         data.setTab(x-tb, tab);
 217                                         tb = x;
 218                                         ++tab;
 219                                         limits = false;
 220                                         data.Next();
 221                                 } else
 222                                         if (cx == LM_TC_CR) {
 223                                                 if (tb > 0) {
 224                                                         int x, y;
 225                                                         data.GetIncPos(x, y);
 226                                                         if (data.IsFirst() || cxp == LM_TC_TAB || cxp == LM_TC_CR) {
 227                                                                 if (ascent<df_asc) ascent = df_asc;
 228                                                                 tb = x;
 229                                                         }
 230                                                         data.setTab(x - tb, tab);
 231                                                 } else //if (GetColumns() == 1)
 232                                                         {
 233                                                                 int x, y;
 234                                                                 data.GetIncPos(x, y);
 235                                                                 data.setTab(x, tab);
 236                                                                 if (ascent<df_asc) ascent = df_asc;
 237                                                         }
 238                                                 tb = tab = 0;
 239                                                 data.subMetrics(ascent, descent);
 240                                                 ascent = df_asc;
 241                                                 descent = 0;
 242                                                 data.Next();
 243                                         } else {
 244                                                 lyxerr << "Mathed Error: Unrecognized code[" << cx
 245                                                        << "]" << endl;
 246                                                 break;
 247                                         }
 248                 cxp = cx;
 249         }
 250         data.GetIncPos(width, ls);
 251
 252         // No matter how simple is a matrix, it is NOT a subparagraph
 253         if (isMatrix()) {
 254                 if (cxp == LM_TC_TAB) {
 255                         if (ascent<df_asc) ascent = df_asc;
 256                         data.setTab(0, tab);
 257                 } else {
 258                         data.setTab(width - tb, tab);
 259                 }
 260         }
 261
 262         data.subMetrics(ascent, descent);
 263 }
 264
 265
 266
 267 void MathParInset::Write(ostream & os, bool fragile)
 268 {
 269         if (array.empty()) return;
 270         int brace = 0;
 271         latexkeys const * l;
 272         MathedIter data(&array);
 273         // hack
 274         MathedRowSt const * crow = getRowSt();
 275         data.Reset();
 276
 277         if (!Permit(LMPF_FIXED_SIZE)) {
 278                 l = lm_get_key_by_id(size(), LM_TK_STY);
 279                 if (l) {
 280                         os << '\\' << l->name << ' ';
 281                 }
 282         }
 283         while (data.OK()) {
 284                 byte cx = data.GetChar();
 285                 if (cx >= ' ') {
 286                         string str = data.GetString();
 287
 288                         if (data.fcode() >= LM_TC_RM && data.fcode() <= LM_TC_TEXTRM) {
 289                                 os << '\\' << math_font_name[data.fcode()-LM_TC_RM] << '{';
 290                         }
 291                         for (string::const_iterator s = str.begin();
 292                              s != str.end(); ++s) {
 293                                 byte c = *s;
 294                                 if (MathIsSymbol(data.fcode())) {
 295                                         l = lm_get_key_by_id(c, (data.fcode() == LM_TC_BSYM) ?
 296                                                              LM_TK_BIGSYM : LM_TK_SYM);
 297                                         if (l) {
 298                                                 os << '\\' << l->name << ' ';
 299                                         } else {
 300 #warning this does not compile on gcc 2.97
 301                                                 //lyxerr << "Illegal symbol code[" << c
 302                                                 //   << " " << str.end() - s << " " << data.fcode() << "]";
 303                                         }
 304                                 } else {
 305                                         // Is there a standard logical XOR?
 306                                         if ((data.fcode() == LM_TC_TEX && c != '{' && c != '}') ||
 307                                             (data.fcode() == LM_TC_SPECIAL))
 308                                                 os << '\\';
 309                                         else {
 310                                                 if (c == '{') ++brace;
 311                                                 if (c == '}') --brace;
 312                                         }
 313                                         if (c == '}' && data.fcode() == LM_TC_TEX && brace < 0)
 314                                                 lyxerr <<"Math warning: Unexpected closing brace."
 315                                                        << endl;
 316                                         else
 317                                                 os << char(c);
 318                                 }
 319                         }
 320                         if (data.fcode()>= LM_TC_RM && data.fcode()<= LM_TC_TEXTRM)
 321                                 os << '}';
 322                 } else
 323                         if (MathIsInset(cx)) {
 324                                 MathedInset * p = data.GetInset();
 325                                 if (cx == LM_TC_UP)
 326                                         os << "^{";
 327                                 if (cx == LM_TC_DOWN)
 328                                         os << "_{";
 329                                 p->Write(os, fragile);
 330                                 if (cx == LM_TC_UP || cx == LM_TC_DOWN)
 331                                         os << '}';
 332                                 data.Next();
 333                         } else
 334                                 switch (cx) {
 335                                 case LM_TC_TAB:
 336                                 {
 337                                         os << " & ";
 338                                         data.Next();
 339                                         break;
 340                                 }
 341                                 case LM_TC_CR:
 342                                 {
 343                                         if (crow) {
 344                                                 if (!crow->isNumbered()) {
 345                                                         os << "\\nonumber ";
 346                                                 }
 347                                                 if (!crow->getLabel().empty()) {
 348                                                         os << "\\label{"
 349                                                            << crow->getLabel()
 350                                                            << "} ";
 351                                                 }
 352                                                 crow = crow->getNext();
 353                                         }
 354                                         if (fragile)
 355                                                 os << "\\protect";
 356                                         os << "\\\\\n";
 357                                         ++number_of_newlines;
 358                                         data.Next();
 359                                         break;
 360                                 }
 361                                 default:
 362                                         lyxerr << "WMath Error: unrecognized code[" << cx << "]";
 363                                         return;
 364                                 }
 365         }
 366
 367         if (crow) {
 368                 if (!crow->isNumbered()) {
 369                         os << "\\nonumber ";
 370                 }
 371                 if (!crow->getLabel().empty()) {
 372                         os << "\\label{"
 373                            << crow->getLabel()
 374                            << "} ";
 375                 }
 376         }
 377
 378         if (brace > 0)
 379                 os << string(brace, '}');
 380 }
 381
 382
 383 void MathParInset::clear()
 384 {
 385         array.clear();
 386 }
 387
 388 bool MathParInset::Inside(int x, int y)
 389 {
 390   return (x >= xo() && x <= xo() + width
 391           && y <= yo() + descent && y >= yo() - ascent);
 392 }
 393
 394
 395 void MathParInset::GetXY(int & x, int & y) const
 396 {
 397    x = xo();
 398    y = yo();
 399 }
 400
 401
 402 void MathParInset::UserSetSize(short sz)
 403 {
 404    if (sz >= 0) {
 405        size(sz);
 406        flag = flag & ~LMPF_FIXED_SIZE;
 407    }
 408 }
 409
 410
 411 void MathParInset::SetStyle(short sz)
 412 {
 413     if (Permit(LMPF_FIXED_SIZE)) {
 414         if (Permit(LMPF_SCRIPT))
 415           sz = (sz < LM_ST_SCRIPT) ? LM_ST_SCRIPT: LM_ST_SCRIPTSCRIPT;
 416         if (Permit(LMPF_SMALLER) && sz < LM_ST_SCRIPTSCRIPT) {
 417             ++sz;
 418         }
 419         MathedInset::SetStyle(sz);
 420     }
 421 }
 422
 423
 424 bool MathParInset::Permit(short f) const
 425 {
 426         return bool(f & flag);
 427 }
 428
 429
 430 MathedArray & MathParInset::GetData()
 431 {
 432         return array;
 433 }
 434
 435
 436 MathedArray const & MathParInset::GetData() const
 437 {
 438         return array;
 439 }
 440
 441
 442 void MathParInset::setXY(int x, int y)
 443 {
 444         xo_ = x;
 445         yo_ = y;
 446 }