lib/gdi/font.cpp

   1 #include <lib/gdi/font.h>
   2
   3 #include <stdio.h>
   4 #include <stdlib.h>
   5 #include <ctype.h>
   6 #include <pthread.h>
   7 #include <sys/types.h>
   8 #include <unistd.h>
   9
  10 // use this for init Freetype...
  11 #include <ft2build.h>
  12 #include FT_FREETYPE_H
  13 #ifdef HAVE_FREETYPE2
  14 #define FTC_Image_Cache_New(a,b)        FTC_ImageCache_New(a,b)
  15 #define FTC_Image_Cache_Lookup(a,b,c,d) FTC_ImageCache_Lookup(a,b,c,d,NULL)
  16 #define FTC_SBit_Cache_New(a,b)         FTC_SBitCache_New(a,b)
  17 #define FTC_SBit_Cache_Lookup(a,b,c,d)  FTC_SBitCache_Lookup(a,b,c,d,NULL)
  18 #endif
  19
  20 #include <lib/base/eerror.h>
  21 #include <lib/gdi/lcd.h>
  22 #include <lib/gdi/grc.h>
  23 #include <lib/base/elock.h>
  24 #include <lib/base/init.h>
  25 #include <lib/base/init_num.h>
  26
  27 #define HAVE_FRIBIDI
  28 // until we have it in the cdk
  29
  30 #ifdef HAVE_FRIBIDI
  31 #include <fribidi/fribidi.h>
  32 #endif
  33
  34 #include <map>
  35
  36 fontRenderClass *fontRenderClass::instance;
  37
  38 static pthread_mutex_t ftlock=PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP;
  39
  40 #ifndef HAVE_FREETYPE2
  41 static FTC_Font cache_current_font=0;
  42 #endif
  43
  44 struct fntColorCacheKey
  45 {
  46         gRGB start, end;
  47         fntColorCacheKey(const gRGB &start, const gRGB &end)
  48                 : start(start), end(end)
  49         {
  50         }
  51         bool operator <(const fntColorCacheKey &c) const
  52         {
  53                 if (start < c.start)
  54                         return 1;
  55                 else if (start == c.start)
  56                         return end < c.end;
  57                 return 0;
  58         }
  59 };
  60
  61 std::map<fntColorCacheKey,gLookup> colorcache;
  62
  63 static gLookup &getColor(const gPalette &pal, const gRGB &start, const gRGB &end)
  64 {
  65         fntColorCacheKey key(start, end);
  66         std::map<fntColorCacheKey,gLookup>::iterator i=colorcache.find(key);
  67         if (i != colorcache.end())
  68                 return i->second;
  69         gLookup &n=colorcache.insert(std::pair<fntColorCacheKey,gLookup>(key,gLookup())).first->second;
  70 //      eDebug("[FONT] creating new font color cache entry %02x%02x%02x%02x .. %02x%02x%02x%02x", start.a, start.r, start.g, start.b,
  71 //              end.a, end.r, end.g, end.b);
  72         n.build(16, pal, start, end);
  73 //      for (int i=0; i<16; i++)
  74 //              eDebugNoNewLine("%02x|%02x%02x%02x%02x ", (int)n.lookup[i], pal.data[n.lookup[i]].a, pal.data[n.lookup[i]].r, pal.data[n.lookup[i]].g, pal.data[n.lookup[i]].b);
  75 //      eDebug("");
  76         return n;
  77 }
  78
  79 fontRenderClass *fontRenderClass::getInstance()
  80 {
  81         return instance;
  82 }
  83
  84 FT_Error myFTC_Face_Requester(FTC_FaceID        face_id,
  85                                                                                                                         FT_Library      library,
  86                                                                                                                         FT_Pointer      request_data,
  87                                                                                                                         FT_Face*                aface)
  88 {
  89         return ((fontRenderClass*)request_data)->FTC_Face_Requester(face_id, aface);
  90 }
  91
  92
  93 FT_Error fontRenderClass::FTC_Face_Requester(FTC_FaceID face_id, FT_Face* aface)
  94 {
  95         fontListEntry *font=(fontListEntry *)face_id;
  96         if (!font)
  97                 return -1;
  98
  99 //      eDebug("[FONT] FTC_Face_Requester (%s)", font->face.c_str());
 100
 101         int error;
 102         if ((error=FT_New_Face(library, font->filename.c_str(), 0, aface)))
 103         {
 104                 eDebug(" failed: %s", strerror(error));
 105                 return error;
 106         }
 107         FT_Select_Charmap(*aface, ft_encoding_unicode);
 108         return 0;
 109 }
 110
 111 FTC_FaceID fontRenderClass::getFaceID(const std::string &face)
 112 {
 113         for (fontListEntry *f=font; f; f=f->next)
 114         {
 115                 if (f->face == face)
 116                         return (FTC_FaceID)f;
 117         }
 118         return 0;
 119 }
 120
 121 FT_Error fontRenderClass::getGlyphBitmap(FTC_Image_Desc *font, FT_ULong glyph_index, FTC_SBit *sbit)
 122 {
 123         FT_Error res=FTC_SBit_Cache_Lookup(sbitsCache, font, glyph_index, sbit);
 124         return res;
 125 }
 126
 127 std::string fontRenderClass::AddFont(const std::string &filename, const std::string &name, int scale)
 128 {
 129         eDebugNoNewLine("[FONT] adding font %s...", filename.c_str());
 130         fflush(stdout);
 131         int error;
 132         fontListEntry *n=new fontListEntry;
 133
 134         n->scale=scale;
 135         FT_Face face;
 136         singleLock s(ftlock);
 137
 138         if ((error=FT_New_Face(library, filename.c_str(), 0, &face)))
 139                 eFatal(" failed: %s", strerror(error));
 140
 141         n->filename=filename;
 142         n->face=name;
 143         FT_Done_Face(face);
 144
 145         n->next=font;
 146         eDebug("OK (%s)", n->face.c_str());
 147         font=n;
 148
 149         return n->face;
 150 }
 151
 152 fontRenderClass::fontListEntry::~fontListEntry()
 153 {
 154 }
 155
 156 fontRenderClass::fontRenderClass(): fb(fbClass::getInstance())
 157 {
 158         instance=this;
 159         eDebug("[FONT] initializing lib...");
 160         {
 161                 if (FT_Init_FreeType(&library))
 162                 {
 163                         eDebug("[FONT] initializing failed.");
 164                         return;
 165                 }
 166         }
 167         eDebug("[FONT] loading fonts...");
 168         fflush(stdout);
 169         font=0;
 170
 171         int maxbytes=4*1024*1024;
 172         eDebug("[FONT] Intializing font cache, using max. %dMB...", maxbytes/1024/1024);
 173         fflush(stdout);
 174         {
 175                 if (FTC_Manager_New(library, 8, 8, maxbytes, myFTC_Face_Requester, this, &cacheManager))
 176                 {
 177                         eDebug("[FONT] initializing font cache failed!");
 178                         return;
 179                 }
 180                 if (!cacheManager)
 181                 {
 182                         eDebug("[FONT] initializing font cache manager error.");
 183                         return;
 184                 }
 185                 if (FTC_SBit_Cache_New(cacheManager, &sbitsCache))
 186                 {
 187                         eDebug("[FONT] initializing font cache sbit failed!");
 188                         return;
 189                 }
 190                 if (FTC_Image_Cache_New(cacheManager, &imageCache))
 191                 {
 192                         eDebug("[FONT] initializing font cache imagecache failed!");
 193                 }
 194         }
 195         return;
 196 }
 197
 198 float fontRenderClass::getLineHeight(const gFont& font)
 199 {
 200         if (!instance)
 201                 return 0;
 202         ePtr<Font> fnt;
 203         getFont(fnt, font.family.c_str(), font.pointSize);
 204         if (!fnt)
 205                 return 0;
 206         singleLock s(ftlock);
 207         FT_Face current_face;
 208 #ifdef HAVE_FREETYPE2
 209         if ((FTC_Manager_LookupFace(cacheManager, fnt->scaler.face_id, &current_face) < 0) ||
 210             (FTC_Manager_LookupSize(cacheManager, &fnt->scaler, &fnt->size) < 0))
 211 #else
 212         if (FTC_Manager_Lookup_Size(cacheManager, &fnt->font.font, &current_face, &fnt->size)<0)
 213 #endif
 214         {
 215                 eDebug("FTC_Manager_Lookup_Size failed!");
 216                 return 0;
 217         }
 218         int linegap=current_face->size->metrics.height-(current_face->size->metrics.ascender+current_face->size->metrics.descender);
 219         float height=(current_face->size->metrics.ascender+current_face->size->metrics.descender+linegap)/64.0;
 220         return height;
 221 }
 222
 223 fontRenderClass::~fontRenderClass()
 224 {
 225         singleLock s(ftlock);
 226         while(font)
 227         {
 228                 fontListEntry *f=font;
 229                 font=font->next;
 230                 delete f;
 231         }
 232 //      auskommentiert weil freetype und enigma die kritische masse des suckens ueberschreiten.
 233 //      FTC_Manager_Done(cacheManager);
 234 //      FT_Done_FreeType(library);
 235 }
 236
 237 int fontRenderClass::getFont(ePtr<Font> &font, const std::string &face, int size, int tabwidth)
 238 {
 239         FTC_FaceID id=getFaceID(face);
 240         if (!id)
 241         {
 242                 font = 0;
 243                 return -1;
 244         }
 245         font = new Font(this, id, size * ((fontListEntry*)id)->scale / 100, tabwidth);
 246         return 0;
 247 }
 248
 249 void addFont(const char *filename, const char *alias, int scale_factor, int is_replacement)
 250 {
 251         fontRenderClass::getInstance()->AddFont(filename, alias, scale_factor);
 252         if (is_replacement)
 253                 eTextPara::setReplacementFont(alias);
 254 }
 255
 256 DEFINE_REF(Font);
 257
 258 Font::Font(fontRenderClass *render, FTC_FaceID faceid, int isize, int tw): tabwidth(tw)
 259 {
 260         renderer=render;
 261 #ifdef HAVE_FREETYPE2
 262         font.face_id = faceid;
 263         font.width = isize;
 264         font.height = isize;
 265         font.flags = FT_LOAD_DEFAULT;
 266         scaler.face_id = faceid;
 267         scaler.width = isize;
 268         scaler.height = isize;
 269         scaler.pixel = 1;
 270 #else
 271         font.font.face_id=faceid;
 272         font.font.pix_width     = isize;
 273         font.font.pix_height = isize;
 274         font.image_type = ftc_image_grays;
 275 #endif
 276         height=isize;
 277         if (tabwidth==-1)
 278                 tabwidth=8*isize;
 279 //      font.image_type |= ftc_image_flag_autohinted;
 280 }
 281
 282 FT_Error Font::getGlyphBitmap(FT_ULong glyph_index, FTC_SBit *sbit)
 283 {
 284         return renderer->getGlyphBitmap(&font, glyph_index, sbit);
 285 }
 286
 287 Font::~Font()
 288 {
 289 }
 290
 291 DEFINE_REF(eTextPara);
 292
 293 int eTextPara::appendGlyph(Font *current_font, FT_Face current_face, FT_UInt glyphIndex, int flags, int rflags)
 294 {
 295         FTC_SBit glyph;
 296         if (current_font->getGlyphBitmap(glyphIndex, &glyph))
 297                 return 1;
 298
 299         int nx=cursor.x();
 300
 301         nx+=glyph->xadvance;
 302
 303         if (
 304                         (rflags&RS_WRAP) &&
 305                         (nx >= area.right())
 306                 )
 307         {
 308                 int cnt = 0;
 309                 glyphString::reverse_iterator i(glyphs.rbegin());
 310                         /* find first possibility (from end to begin) to break */
 311                 while (i != glyphs.rend())
 312                 {
 313                         if (i->flags&(GS_CANBREAK|GS_ISFIRST)) /* stop on either space/hyphen/shy or start of line (giving up) */
 314                                 break;
 315                         cnt++;
 316                         ++i;
 317                 }
 318
 319                         /* if ... */
 320                 if (i != glyphs.rend()  /* ... we found anything */
 321                         && (i->flags&GS_CANBREAK) /* ...and this is a space/hyphen/soft-hyphen */
 322                         && (!(i->flags & GS_ISFIRST)) /* ...and this is not an start of line (line with just a single space/hyphen) */
 323                         && cnt ) /* ... and there are actual non-space characters after this */
 324                 {
 325                                 /* if we have a soft-hyphen, and used that for breaking, turn it into a real hyphen */
 326                         if (i->flags & GS_SOFTHYPHEN)
 327                         {
 328                                 i->flags &= ~GS_SOFTHYPHEN;
 329                                 i->flags |= GS_HYPHEN;
 330                         }
 331                         --i; /* skip the space/hypen/softhyphen */
 332                         int linelength=cursor.x()-i->x;
 333                         i->flags|=GS_ISFIRST; /* make this a line start */
 334                         ePoint offset=ePoint(i->x, i->y);
 335                         newLine(rflags);
 336                         offset-=cursor;
 337
 338                                 /* and move everything to the end into the next line. */
 339                         do
 340                         {
 341                                 i->x-=offset.x();
 342                                 i->y-=offset.y();
 343                                 i->bbox.moveBy(-offset.x(), -offset.y());
 344                         } while (i-- != glyphs.rbegin()); // rearrange them into the next line
 345                         cursor+=ePoint(linelength, 0);  // put the cursor after that line
 346                 } else
 347                 {
 348                         if (cnt)
 349                         {
 350                                 newLine(rflags);
 351                                 flags|=GS_ISFIRST;
 352                         }
 353                 }
 354         }
 355
 356         int xadvance=glyph->xadvance, kern=0;
 357
 358         if (previous && use_kerning)
 359         {
 360                 FT_Vector delta;
 361                 FT_Get_Kerning(current_face, previous, glyphIndex, ft_kerning_default, &delta);
 362                 kern=delta.x>>6;
 363         }
 364
 365         pGlyph ng;
 366         ng.bbox.setLeft( (flags&GS_ISFIRST|cursor.x()-1)+glyph->left );
 367         ng.bbox.setTop( cursor.y() - glyph->top );
 368         ng.bbox.setWidth( glyph->width );
 369         ng.bbox.setHeight( glyph->height );
 370
 371         xadvance += kern;
 372         ng.bbox.setWidth(xadvance);
 373
 374         ng.x = cursor.x()+kern;
 375         ng.y = cursor.y();
 376         ng.w = xadvance;
 377         ng.font = current_font;
 378         ng.glyph_index = glyphIndex;
 379         ng.flags = flags;
 380         glyphs.push_back(ng);
 381
 382                 /* when we have a SHY, don't xadvance. It will either be the last in the line (when used for breaking), or not displayed. */
 383         if (!(flags & GS_SOFTHYPHEN))
 384                 cursor += ePoint(xadvance, 0);
 385         previous = glyphIndex;
 386         return 0;
 387 }
 388
 389 void eTextPara::calc_bbox()
 390 {
 391         if (!glyphs.size())
 392         {
 393                 bboxValid = 0;
 394                 boundBox = eRect();
 395                 return;
 396         }
 397
 398         bboxValid = 1;
 399
 400         glyphString::iterator i(glyphs.begin());
 401
 402         boundBox = i->bbox;
 403         ++i;
 404
 405         for (; i != glyphs.end(); ++i)
 406         {
 407                 if (i->flags & (GS_ISSPACE|GS_SOFTHYPHEN))
 408                         continue;
 409                 if ( i->bbox.left() < boundBox.left() )
 410                         boundBox.setLeft( i->bbox.left() );
 411                 if ( i->bbox.top() < boundBox.top() )
 412                         boundBox.setTop( i->bbox.top() );
 413                 if ( i->bbox.right() > boundBox.right() )
 414                         boundBox.setRight( i->bbox.right() );
 415                 if ( i->bbox.bottom() > boundBox.bottom() )
 416                         boundBox.setBottom( i->bbox.bottom() );
 417         }
 418 //      eDebug("boundBox left = %i, top = %i, right = %i, bottom = %i", boundBox.left(), boundBox.top(), boundBox.right(), boundBox.bottom() );
 419 }
 420
 421 void eTextPara::newLine(int flags)
 422 {
 423         if (maximum.width()<cursor.x())
 424                 maximum.setWidth(cursor.x());
 425         cursor.setX(left);
 426         previous=0;
 427         int linegap=current_face->size->metrics.height-(current_face->size->metrics.ascender+current_face->size->metrics.descender);
 428         cursor+=ePoint(0, (current_face->size->metrics.ascender+current_face->size->metrics.descender+linegap)>>6);
 429         if (maximum.height()<cursor.y())
 430                 maximum.setHeight(cursor.y());
 431         previous=0;
 432 }
 433
 434 eTextPara::~eTextPara()
 435 {
 436         clear();
 437 }
 438
 439 void eTextPara::setFont(const gFont *font)
 440 {
 441         ePtr<Font> fnt, replacement;
 442         fontRenderClass::getInstance()->getFont(fnt, font->family.c_str(), font->pointSize);
 443         if (!fnt)
 444                 eWarning("FONT '%s' MISSING!", font->family.c_str());
 445         fontRenderClass::getInstance()->getFont(replacement, replacement_facename.c_str(), font->pointSize);
 446         setFont(fnt, replacement);
 447 }
 448
 449 std::string eTextPara::replacement_facename;
 450 std::set<int> eTextPara::forced_replaces;
 451
 452 void eTextPara::setFont(Font *fnt, Font *replacement)
 453 {
 454         if (!fnt)
 455                 return;
 456         current_font=fnt;
 457         replacement_font=replacement;
 458         singleLock s(ftlock);
 459
 460                         // we ask for replacment_font first becauseof the cache
 461         if (replacement_font)
 462         {
 463 #ifdef HAVE_FREETYPE2
 464                 if ((FTC_Manager_LookupFace(fontRenderClass::instance->cacheManager,
 465                                             replacement_font->scaler.face_id,
 466                                             &replacement_face) < 0) ||
 467                     (FTC_Manager_LookupSize(fontRenderClass::instance->cacheManager,
 468                                             &replacement_font->scaler,
 469                                             &replacement_font->size) < 0))
 470 #else
 471                 if (FTC_Manager_Lookup_Size(fontRenderClass::instance->cacheManager,
 472                                 &replacement_font->font.font, &replacement_face,
 473                                 &replacement_font->size)<0)
 474 #endif
 475                 {
 476                         eDebug("FTC_Manager_Lookup_Size failed!");
 477                         return;
 478                 }
 479         }
 480         if (current_font)
 481         {
 482 #ifdef HAVE_FREETYPE2
 483                 if ((FTC_Manager_LookupFace(fontRenderClass::instance->cacheManager,
 484                                             current_font->scaler.face_id,
 485                                             &current_face) < 0) ||
 486                     (FTC_Manager_LookupSize(fontRenderClass::instance->cacheManager,
 487                                             &current_font->scaler,
 488                                             &current_font->size) < 0))
 489 #else
 490                 if (FTC_Manager_Lookup_Size(fontRenderClass::instance->cacheManager, &current_font->font.font, &current_face, &current_font->size)<0)
 491 #endif
 492                 {
 493                         eDebug("FTC_Manager_Lookup_Size failed!");
 494                         return;
 495                 }
 496         }
 497 #ifndef HAVE_FREETYPE2
 498         cache_current_font=&current_font->font.font;
 499 #endif
 500         previous=0;
 501         use_kerning=FT_HAS_KERNING(current_face);
 502 }
 503
 504 void
 505 shape (std::vector<unsigned long> &string, const std::vector<unsigned long> &text);
 506
 507 int eTextPara::renderString(const char *string, int rflags)
 508 {
 509         singleLock s(ftlock);
 510
 511         if (!current_font)
 512                 return -1;
 513
 514 #ifdef HAVE_FREETYPE2
 515         if ((FTC_Manager_LookupFace(fontRenderClass::instance->cacheManager,
 516                                     current_font->scaler.face_id,
 517                                     &current_face) < 0) ||
 518             (FTC_Manager_LookupSize(fontRenderClass::instance->cacheManager,
 519                                     &current_font->scaler,
 520                                     &current_font->size) < 0))
 521         {
 522                 eDebug("FTC_Manager_Lookup_Size failed!");
 523                 return -1;
 524         }
 525 #else
 526         if (&current_font->font.font != cache_current_font)
 527         {
 528                 if (FTC_Manager_Lookup_Size(fontRenderClass::instance->cacheManager, &current_font->font.font, &current_face, &current_font->size)<0)
 529                 {
 530                         eDebug("FTC_Manager_Lookup_Size failed!");
 531                         return -1;
 532                 }
 533                 cache_current_font=&current_font->font.font;
 534         }
 535 #endif
 536
 537         if (!current_face)
 538                 eFatal("eTextPara::renderString: no current_face");
 539         if (!current_face->size)
 540                 eFatal("eTextPara::renderString: no current_face->size");
 541
 542         if (cursor.y()==-1)
 543         {
 544                 cursor=ePoint(area.x(), area.y()+(current_face->size->metrics.ascender>>6));
 545                 left=cursor.x();
 546         }
 547
 548         std::vector<unsigned long> uc_string, uc_visual;
 549         if (string)
 550                 uc_string.reserve(strlen(string));
 551
 552         const char *p = string ? string : "";
 553
 554         while (*p)
 555         {
 556                 unsigned int unicode=(unsigned char)*p++;
 557
 558                 if (unicode & 0x80) // we have (hopefully) UTF8 here, and we assume that the encoding is VALID
 559                 {
 560                         if ((unicode & 0xE0)==0xC0) // two bytes
 561                         {
 562                                 unicode&=0x1F;
 563                                 unicode<<=6;
 564                                 if (*p)
 565                                         unicode|=(*p++)&0x3F;
 566                         } else if ((unicode & 0xF0)==0xE0) // three bytes
 567                         {
 568                                 unicode&=0x0F;
 569                                 unicode<<=6;
 570                                 if (*p)
 571                                         unicode|=(*p++)&0x3F;
 572                                 unicode<<=6;
 573                                 if (*p)
 574                                         unicode|=(*p++)&0x3F;
 575                         } else if ((unicode & 0xF8)==0xF0) // four bytes
 576                         {
 577                                 unicode&=0x07;
 578                                 unicode<<=6;
 579                                 if (*p)
 580                                         unicode|=(*p++)&0x3F;
 581                                 unicode<<=6;
 582                                 if (*p)
 583                                         unicode|=(*p++)&0x3F;
 584                                 unicode<<=6;
 585                                 if (*p)
 586                                         unicode|=(*p++)&0x3F;
 587                         }
 588                 }
 589                 uc_string.push_back(unicode);
 590         }
 591
 592         std::vector<unsigned long> uc_shape;
 593
 594                 // character -> glyph conversion
 595         shape(uc_shape, uc_string);
 596
 597                 // now do the usual logical->visual reordering
 598         int size=uc_shape.size();
 599 #ifdef HAVE_FRIBIDI
 600         FriBidiCharType dir=FRIBIDI_TYPE_ON;
 601         int lines=1;
 602         int pos=0, spos=0;
 603         uc_visual.resize(size);
 604         // gaaanz lahm, aber anders geht das leider nicht, sorry.
 605         FriBidiChar array[size], target[size];
 606         std::copy(uc_shape.begin(), uc_shape.end(), array);
 607
 608         bool line_open = false;
 609         while(pos < size)
 610         {
 611                 int incr=1;
 612                 bool line_end = false;
 613                 if (!line_open)
 614                         line_open = true;
 615                 switch((unsigned long)array[pos])
 616                 {
 617                 case '\\':
 618                         if (pos+1 == size || (unsigned long)array[pos+1] != 'n')
 619                                 break;
 620                         ++incr;
 621                 case 0x8A:
 622                 case 0xE08A:
 623                 case '\n':
 624                         line_end = true;
 625                 default:
 626                         break;
 627                 }
 628                 if (line_end || pos+incr >= size) {
 629                         int len = pos - spos;
 630                         if (len)
 631                                 fribidi_log2vis(array+spos, len, &dir, target+spos, 0, 0, 0);
 632                         target[pos] = array[pos];
 633                         if (incr > 1)
 634                                 target[pos+1] = array[pos+1];
 635                         spos = pos+incr;
 636                         ++lines;
 637                         line_open = false;
 638                 }
 639                 pos += incr;
 640         }
 641
 642         if (lines < 2)
 643                 fribidi_log2vis(array, size, &dir, target, 0, 0, 0);
 644
 645         uc_visual.assign(target, target+size);
 646 #else
 647         uc_visual=uc_shape;
 648 #endif
 649
 650         glyphs.reserve(size);
 651
 652         int nextflags = 0;
 653
 654         for (std::vector<unsigned long>::const_iterator i(uc_visual.begin());
 655                 i != uc_visual.end(); ++i)
 656         {
 657                 int isprintable=1;
 658                 int flags = nextflags;
 659                 nextflags = 0;
 660                 unsigned long chr = *i;
 661
 662                 if (!(rflags&RS_DIRECT))
 663                 {
 664                         switch (chr)
 665                         {
 666                         case '\\':
 667                         {
 668                                 unsigned long c = *(i+1);
 669                                 switch (c)
 670                                 {
 671                                         case 'n':
 672                                                 i++;
 673                                                 goto newline;
 674                                         case 't':
 675                                                 i++;
 676                                                 goto tab;
 677                                         case 'r':
 678                                                 i++;
 679                                                 goto nprint;
 680                                         default:
 681                                         ;
 682                                 }
 683                                 break;
 684                         }
 685                         case '\t':
 686 tab:            isprintable=0;
 687                                 cursor+=ePoint(current_font->tabwidth, 0);
 688                                 cursor-=ePoint(cursor.x()%current_font->tabwidth, 0);
 689                                 break;
 690                         case 0x8A:
 691                         case 0xE08A:
 692                         case '\n':
 693 newline:isprintable=0;
 694                                 newLine(rflags);
 695                                 nextflags|=GS_ISFIRST;
 696                                 break;
 697                         case '\r':
 698                         case 0x86: case 0xE086:
 699                         case 0x87: case 0xE087:
 700 nprint: isprintable=0;
 701                                 break;
 702                         case 0xAD: // soft-hyphen
 703                                 flags |= GS_SOFTHYPHEN;
 704                                 chr = 0x2010; /* hyphen */
 705                                 break;
 706                         case 0x2010:
 707                         case '-':
 708                                 flags |= GS_HYPHEN;
 709                                 break;
 710                         case ' ':
 711                                 flags|=GS_ISSPACE;
 712                         default:
 713                                 break;
 714                         }
 715                 }
 716                 if (isprintable)
 717                 {
 718                         FT_UInt index = 0;
 719
 720                                 /* FIXME: our font doesn't seem to have a hyphen, so use hyphen-minus for it. */
 721                         if (chr == 0x2010)
 722                                 chr = '-';
 723
 724                         if (forced_replaces.find(chr) == forced_replaces.end())
 725                                 index=(rflags&RS_DIRECT)? chr : FT_Get_Char_Index(current_face, chr);
 726
 727                         if (!index)
 728                         {
 729                                 if (replacement_face)
 730                                         index=(rflags&RS_DIRECT)? chr : FT_Get_Char_Index(replacement_face, chr);
 731
 732                                 if (!index)
 733                                         eDebug("unicode U+%4lx not present", chr);
 734                                 else
 735                                         appendGlyph(replacement_font, replacement_face, index, flags, rflags);
 736                         } else
 737                                 appendGlyph(current_font, current_face, index, flags, rflags);
 738                 }
 739         }
 740         bboxValid=false;
 741         calc_bbox();
 742 #ifdef HAVE_FRIBIDI
 743         if (dir & FRIBIDI_MASK_RTL)
 744                 realign(dirRight);
 745 #endif
 746         return 0;
 747 }
 748
 749 void eTextPara::blit(gDC &dc, const ePoint &offset, const gRGB &background, const gRGB &foreground)
 750 {
 751         singleLock s(ftlock);
 752
 753         if (!current_font)
 754                 return;
 755
 756 #ifdef HAVE_FREETYPE2
 757         if ((FTC_Manager_LookupFace(fontRenderClass::instance->cacheManager,
 758                                     current_font->scaler.face_id,
 759                                     &current_face) < 0) ||
 760             (FTC_Manager_LookupSize(fontRenderClass::instance->cacheManager,
 761                                     &current_font->scaler,
 762                                     &current_font->size) < 0))
 763         {
 764                 eDebug("FTC_Manager_Lookup_Size failed!");
 765                 return;
 766         }
 767 #else
 768         if (&current_font->font.font != cache_current_font)
 769         {
 770                 if (FTC_Manager_Lookup_Size(fontRenderClass::instance->cacheManager, &current_font->font.font, &current_face, &current_font->size)<0)
 771                 {
 772                         eDebug("FTC_Manager_Lookup_Size failed!");
 773                         return;
 774                 }
 775                 cache_current_font=&current_font->font.font;
 776         }
 777 #endif
 778
 779         ePtr<gPixmap> target;
 780         dc.getPixmap(target);
 781         gSurface *surface = target->surface;
 782
 783         register int opcode;
 784
 785         gColor *lookup8, lookup8_invert[16];
 786         gColor *lookup8_normal=0;
 787
 788         __u32 lookup32_normal[16], lookup32_invert[16], *lookup32;
 789
 790         if (surface->bpp == 8)
 791         {
 792                 if (surface->clut.data)
 793                 {
 794                         lookup8_normal=getColor(surface->clut, background, foreground).lookup;
 795
 796                         int i;
 797                         for (i=0; i<16; ++i)
 798                                 lookup8_invert[i] = lookup8_normal[i^0xF];
 799
 800                         opcode=0;
 801                 } else
 802                         opcode=1;
 803         } else if (surface->bpp == 32)
 804         {
 805                 opcode=3;
 806
 807                 for (int i=0; i<16; ++i)
 808                 {
 809 #define BLEND(y, x, a) (y + (((x-y) * a)>>8))
 810
 811                         unsigned char da = background.a, dr = background.r, dg = background.g, db = background.b;
 812                         int sa = i * 16;
 813                         if (sa < 256)
 814                         {
 815                                 da = BLEND(background.a, foreground.a, sa) & 0xFF;
 816                                 dr = BLEND(background.r, foreground.r, sa) & 0xFF;
 817                                 dg = BLEND(background.g, foreground.g, sa) & 0xFF;
 818                                 db = BLEND(background.b, foreground.b, sa) & 0xFF;
 819                         }
 820 #undef BLEND
 821                         da ^= 0xFF;
 822                         lookup32_normal[i]=db | (dg << 8) | (dr << 16) | (da << 24);;
 823                 }
 824                 for (int i=0; i<16; ++i)
 825                         lookup32_invert[i]=lookup32_normal[i^0xF];
 826         } else
 827         {
 828                 eWarning("can't render to %dbpp", surface->bpp);
 829                 return;
 830         }
 831
 832         gRegion area(eRect(0, 0, surface->x, surface->y));
 833         gRegion clip = dc.getClip() & area;
 834
 835         int buffer_stride=surface->stride;
 836
 837         for (unsigned int c = 0; c < clip.rects.size(); ++c)
 838         {
 839                 for (glyphString::iterator i(glyphs.begin()); i != glyphs.end(); ++i)
 840                 {
 841                         if (i->flags & GS_SOFTHYPHEN)
 842                                 continue;
 843
 844                         if (!(i->flags & GS_INVERT))
 845                         {
 846                                 lookup8 = lookup8_normal;
 847                                 lookup32 = lookup32_normal;
 848                         } else
 849                         {
 850                                 lookup8 = lookup8_invert;
 851                                 lookup32 = lookup32_invert;
 852                         }
 853
 854                         static FTC_SBit glyph_bitmap;
 855                         if (fontRenderClass::instance->getGlyphBitmap(&i->font->font, i->glyph_index, &glyph_bitmap))
 856                                 continue;
 857                         int rx=i->x+glyph_bitmap->left + offset.x();
 858                         int ry=i->y-glyph_bitmap->top  + offset.y();
 859
 860                         __u8 *d=(__u8*)(surface->data)+buffer_stride*ry+rx*surface->bypp;
 861                         __u8 *s=glyph_bitmap->buffer;
 862                         register int sx=glyph_bitmap->width;
 863                         int sy=glyph_bitmap->height;
 864                         if ((sy+ry) >= clip.rects[c].bottom())
 865                                 sy=clip.rects[c].bottom()-ry;
 866                         if ((sx+rx) >= clip.rects[c].right())
 867                                 sx=clip.rects[c].right()-rx;
 868                         if (rx < clip.rects[c].left())
 869                         {
 870                                 int diff=clip.rects[c].left()-rx;
 871                                 s+=diff;
 872                                 sx-=diff;
 873                                 rx+=diff;
 874                                 d+=diff*surface->bypp;
 875                         }
 876                         if (ry < clip.rects[c].top())
 877                         {
 878                                 int diff=clip.rects[c].top()-ry;
 879                                 s+=diff*glyph_bitmap->pitch;
 880                                 sy-=diff;
 881                                 ry+=diff;
 882                                 d+=diff*buffer_stride;
 883                         }
 884                         if (sx>0)
 885                                 for (int ay=0; ay<sy; ay++)
 886                                 {
 887                                         if (!opcode)            // 4bit lookup to 8bit
 888                                         {
 889                                                 register __u8 *td=d;
 890                                                 register int ax;
 891
 892                                                 for (ax=0; ax<sx; ax++)
 893                                                 {
 894                                                         register int b=(*s++)>>4;
 895                                                         if(b)
 896                                                                 *td++=lookup8[b];
 897                                                         else
 898                                                                 td++;
 899                                                 }
 900                                         } else if (opcode == 1) // 8bit direct
 901                                         {
 902                                                 register __u8 *td=d;
 903                                                 register int ax;
 904                                                 for (ax=0; ax<sx; ax++)
 905                                                 {
 906                                                         register int b=*s++;
 907                                                         *td++^=b;
 908                                                 }
 909                                         } else
 910                                         {
 911                                                 register __u32 *td=(__u32*)d;
 912                                                 register int ax;
 913                                                 for (ax=0; ax<sx; ax++)
 914                                                 {
 915                                                         register int b=(*s++)>>4;
 916                                                         if(b)
 917                                                                 *td++=lookup32[b];
 918                                                         else
 919                                                                 td++;
 920                                                 }
 921                                         }
 922                                         s+=glyph_bitmap->pitch-sx;
 923                                         d+=buffer_stride;
 924                                 }
 925                 }
 926         }
 927 }
 928
 929 void eTextPara::realign(int dir)        // der code hier ist ein wenig merkwuerdig.
 930 {
 931         glyphString::iterator begin(glyphs.begin()), c(glyphs.begin()), end(glyphs.begin()), last;
 932         if (dir==dirLeft)
 933                 return;
 934         while (c != glyphs.end())
 935         {
 936                 int linelength=0;
 937                 int numspaces=0, num=0;
 938                 begin=end;
 939
 940                 ASSERT( end != glyphs.end());
 941
 942                         // zeilenende suchen
 943                 do {
 944                         last=end;
 945                         ++end;
 946                 } while ((end != glyphs.end()) && (!(end->flags&GS_ISFIRST)));
 947                         // end zeigt jetzt auf begin der naechsten zeile
 948
 949                 for (c=begin; c!=end; ++c)
 950                 {
 951                                 // space am zeilenende skippen
 952                         if ((c==last) && (c->flags&GS_ISSPACE))
 953                                 continue;
 954
 955                         if (c->flags&GS_ISSPACE)
 956                                 numspaces++;
 957                         linelength+=c->w;
 958                         num++;
 959                 }
 960
 961                 switch (dir)
 962                 {
 963                 case dirRight:
 964                 case dirCenter:
 965                 {
 966                         int offset=area.width()-linelength;
 967                         if (dir==dirCenter)
 968                                 offset/=2;
 969                         offset+=area.left();
 970                         while (begin != end)
 971                         {
 972                                 begin->bbox.moveBy(offset-begin->x,0);
 973                                 begin->x=offset;
 974                                 offset+=begin->w;
 975                                 ++begin;
 976                         }
 977                         break;
 978                 }
 979                 case dirBlock:
 980                 {
 981                         if (end == glyphs.end())                // letzte zeile linksbuendig lassen
 982                                 continue;
 983                         int spacemode;
 984                         if (numspaces)
 985                                 spacemode=1;
 986                         else
 987                                 spacemode=0;
 988                         if ((!spacemode) && (num<2))
 989                                 break;
 990                         int off=(area.width()-linelength)*256/(spacemode?numspaces:(num-1));
 991                         int curoff=0;
 992                         while (begin != end)
 993                         {
 994                                 int doadd=0;
 995                                 if ((!spacemode) || (begin->flags&GS_ISSPACE))
 996                                         doadd=1;
 997                                 begin->x+=curoff>>8;
 998                                 begin->bbox.moveBy(curoff>>8,0);
 999                                 if (doadd)
1000                                         curoff+=off;
1001                                 ++begin;
1002                         }
1003                         break;
1004                 }
1005                 }
1006         }
1007         bboxValid=false;
1008         calc_bbox();
1009 }
1010
1011 void eTextPara::clear()
1012 {
1013         singleLock s(ftlock);
1014
1015         current_font = 0;
1016         replacement_font = 0;
1017
1018         glyphs.clear();
1019 }
1020
1021 eAutoInitP0<fontRenderClass> init_fontRenderClass(eAutoInitNumbers::graphic-1, "Font Render Class");