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 const 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 if (MathIsInset(cx)) {
 189                         MathedInset * p = data.GetInset();
 190                         p->SetStyle(size());
 191                         p->Metrics();
 192                         if (cx == LM_TC_UP) {
 193                                 asc += (limits) ? p->Height() + 4: p->Ascent() +
 194                                         ((p->Descent()>asc) ? p->Descent() - asc + 4: 0);
 195                         } else if (cx == LM_TC_DOWN) {
 196                                 des += (limits ? p->Height() + 4 : p->Height() - p->Ascent() / 2);
 197                         } else {
 198                                 asc = p->Ascent();
 199                                 des = p->Descent();
 200                         }
 201                         if (asc > ascent) ascent = asc;
 202                         if (des > descent) descent = des;
 203                         if (cx!= LM_TC_UP && cx!= LM_TC_DOWN)
 204                                 limits = p->GetLimits();
 205                         data.Next();
 206                 } else  if (cx == LM_TC_TAB) {
 207                         int x;
 208                         int y;
 209                         data.GetIncPos(x, y);
 210                         if (data.IsFirst() || cxp == LM_TC_TAB || cxp == LM_TC_CR) {
 211                                 if (ascent < df_asc) ascent = df_asc;
 212                                 tb = x;
 213                         }
 214                         data.setTab(x - tb, tab);
 215                         tb = x;
 216                         ++tab;
 217                         limits = false;
 218                         data.Next();
 219                 } else if (cx == LM_TC_CR) {
 220                         if (tb > 0) {
 221                                 int x;
 222                                 int y;
 223                                 data.GetIncPos(x, y);
 224                                 if (data.IsFirst() || cxp == LM_TC_TAB || cxp == LM_TC_CR) {
 225                                         if (ascent < df_asc) ascent = df_asc;
 226                                         tb = x;
 227                                 }
 228                                 data.setTab(x - tb, tab);
 229                         } else //if (GetColumns() == 1)
 230                                 {
 231                                         int x;
 232                                         int y;
 233                                         data.GetIncPos(x, y);
 234                                         data.setTab(x, tab);
 235                                         if (ascent < df_asc) ascent = df_asc;
 236                                 }
 237                         tb = tab = 0;
 238                         data.subMetrics(ascent, descent);
 239                         ascent = df_asc;
 240                         descent = 0;
 241                         data.Next();
 242                 } else {
 243                         lyxerr << "Mathed Error: Unrecognized code[" << cx
 244                                << "]" << endl;
 245                         break;
 246                 }
 247                 cxp = cx;
 248         }
 249         data.GetIncPos(width, ls);
 250
 251         // No matter how simple is a matrix, it is NOT a subparagraph
 252         if (isMatrix()) {
 253                 if (cxp == LM_TC_TAB) {
 254                         if (ascent<df_asc) ascent = df_asc;
 255                         data.setTab(0, tab);
 256                 } else {
 257                         data.setTab(width - tb, tab);
 258                 }
 259         }
 260
 261         data.subMetrics(ascent, descent);
 262 }
 263
 264
 265
 266 void MathParInset::Write(ostream & os, bool fragile)
 267 {
 268         if (array.empty()) return;
 269         int brace = 0;
 270         latexkeys const * l;
 271         MathedIter data(&array);
 272         // hack
 273         MathedRowSt const * crow = getRowSt();
 274         data.Reset();
 275
 276         if (!Permit(LMPF_FIXED_SIZE)) {
 277                 l = lm_get_key_by_id(size(), LM_TK_STY);
 278                 if (l) {
 279                         os << '\\' << l->name << ' ';
 280                 }
 281         }
 282         while (data.OK()) {
 283                 byte cx = data.GetChar();
 284                 if (cx >= ' ') {
 285                         string str = data.GetString();
 286
 287                         if (data.fcode() >= LM_TC_RM && data.fcode() <= LM_TC_TEXTRM) {
 288                                 os << '\\' << math_font_name[data.fcode()-LM_TC_RM] << '{';
 289                         }
 290                         for (string::const_iterator s = str.begin();
 291                              s != str.end(); ++s) {
 292                                 byte c = *s;
 293                                 if (MathIsSymbol(data.fcode())) {
 294                                         l = lm_get_key_by_id(c, (data.fcode() == LM_TC_BSYM) ?
 295                                                              LM_TK_BIGSYM : LM_TK_SYM);
 296                                         if (l) {
 297                                                 os << '\\' << l->name << ' ';
 298                                         } else {
 299 #warning this does not compile on gcc 2.97
 300                                                 //lyxerr << "Illegal symbol code[" << c
 301                                                 //   << " " << str.end() - s << " " << data.fcode() << "]";
 302                                         }
 303                                 } else {
 304                                         // Is there a standard logical XOR?
 305                                         if ((data.fcode() == LM_TC_TEX && c != '{' && c != '}') ||
 306                                             (data.fcode() == LM_TC_SPECIAL))
 307                                                 os << '\\';
 308                                         else {
 309                                                 if (c == '{') ++brace;
 310                                                 if (c == '}') --brace;
 311                                         }
 312                                         if (c == '}' && data.fcode() == LM_TC_TEX && brace < 0)
 313                                                 lyxerr <<"Math warning: Unexpected closing brace."
 314                                                        << endl;
 315                                         else
 316                                                 os << char(c);
 317                                 }
 318                         }
 319                         if (data.fcode()>= LM_TC_RM && data.fcode()<= LM_TC_TEXTRM)
 320                                 os << '}';
 321                 } else
 322                         if (MathIsInset(cx)) {
 323                                 MathedInset * p = data.GetInset();
 324                                 if (cx == LM_TC_UP)
 325                                         os << "^{";
 326                                 if (cx == LM_TC_DOWN)
 327                                         os << "_{";
 328                                 p->Write(os, fragile);
 329                                 if (cx == LM_TC_UP || cx == LM_TC_DOWN)
 330                                         os << '}';
 331                                 data.Next();
 332                         } else
 333                                 switch (cx) {
 334                                 case LM_TC_TAB:
 335                                 {
 336                                         os << " & ";
 337                                         data.Next();
 338                                         break;
 339                                 }
 340                                 case LM_TC_CR:
 341                                 {
 342                                         if (crow) {
 343                                                 if (!crow->isNumbered()) {
 344                                                         os << "\\nonumber ";
 345                                                 }
 346                                                 if (!crow->getLabel().empty()) {
 347                                                         os << "\\label{"
 348                                                            << crow->getLabel()
 349                                                            << "} ";
 350                                                 }
 351                                                 crow = crow->getNext();
 352                                         }
 353                                         if (fragile)
 354                                                 os << "\\protect";
 355                                         os << "\\\\\n";
 356                                         ++number_of_newlines;
 357                                         data.Next();
 358                                         break;
 359                                 }
 360                                 default:
 361                                         lyxerr << "WMath Error: unrecognized code[" << cx << "]";
 362                                         return;
 363                                 }
 364         }
 365
 366         if (crow) {
 367                 if (!crow->isNumbered()) {
 368                         os << "\\nonumber ";
 369                 }
 370                 if (!crow->getLabel().empty()) {
 371                         os << "\\label{"
 372                            << crow->getLabel()
 373                            << "} ";
 374                 }
 375         }
 376
 377         if (brace > 0)
 378                 os << string(brace, '}');
 379 }
 380
 381
 382 void MathParInset::clear()
 383 {
 384         array.clear();
 385 }
 386
 387 bool MathParInset::Inside(int x, int y)
 388 {
 389   return (x >= xo() && x <= xo() + width
 390           && y <= yo() + descent && y >= yo() - ascent);
 391 }
 392
 393
 394 void MathParInset::GetXY(int & x, int & y) const
 395 {
 396    x = xo();
 397    y = yo();
 398 }
 399
 400
 401 void MathParInset::UserSetSize(short sz)
 402 {
 403    if (sz >= 0) {
 404        size(sz);
 405        flag = flag & ~LMPF_FIXED_SIZE;
 406    }
 407 }
 408
 409
 410 void MathParInset::SetStyle(short sz)
 411 {
 412     if (Permit(LMPF_FIXED_SIZE)) {
 413         if (Permit(LMPF_SCRIPT))
 414           sz = (sz < LM_ST_SCRIPT) ? LM_ST_SCRIPT: LM_ST_SCRIPTSCRIPT;
 415         if (Permit(LMPF_SMALLER) && sz < LM_ST_SCRIPTSCRIPT) {
 416             ++sz;
 417         }
 418         MathedInset::SetStyle(sz);
 419     }
 420 }
 421
 422
 423 bool MathParInset::Permit(short f) const
 424 {
 425         return bool(f & flag);
 426 }
 427
 428
 429 MathedArray & MathParInset::GetData()
 430 {
 431         return array;
 432 }
 433
 434
 435 MathedArray const & MathParInset::GetData() const
 436 {
 437         return array;
 438 }
 439
 440
 441 void MathParInset::setXY(int x, int y)
 442 {
 443         xo_ = x;
 444         yo_ = y;
 445 }