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
  14 #include <lib/base/eerror.h>
  15 #include <lib/gdi/lcd.h>
  16 #include <lib/gdi/grc.h>
  17 #include <lib/base/elock.h>
  18 #include <lib/base/init.h>
  19 #include <lib/base/init_num.h>
  20
  21 #define HAVE_FRIBIDI
  22 // until we have it in the cdk
  23
  24 #ifdef HAVE_FRIBIDI
  25 #include <fribidi/fribidi.h>
  26 #endif
  27
  28 #include <map>
  29
  30 fontRenderClass *fontRenderClass::instance;
  31
  32 static pthread_mutex_t ftlock=PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP;
  33 static pthread_mutex_t refcntlck=PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP;
  34
  35 static FTC_Font cache_current_font=0;
  36
  37 struct fntColorCacheKey
  38 {
  39         gRGB start, end;
  40         fntColorCacheKey(const gRGB &start, const gRGB &end)
  41                 : start(start), end(end)
  42         {
  43         }
  44         bool operator <(const fntColorCacheKey &c) const
  45         {
  46                 if (start < c.start)
  47                         return 1;
  48                 else if (start == c.start)
  49                         return end < c.end;
  50                 return 0;
  51         }
  52 };
  53
  54 std::map<fntColorCacheKey,gLookup> colorcache;
  55
  56 static gLookup &getColor(const gPalette &pal, const gRGB &start, const gRGB &end)
  57 {
  58         fntColorCacheKey key(start, end);
  59         std::map<fntColorCacheKey,gLookup>::iterator i=colorcache.find(key);
  60         if (i != colorcache.end())
  61                 return i->second;
  62         gLookup &n=colorcache.insert(std::pair<fntColorCacheKey,gLookup>(key,gLookup())).first->second;
  63 //      eDebug("[FONT] creating new font color cache entry %02x%02x%02x%02x .. %02x%02x%02x%02x", start.a, start.r, start.g, start.b,
  64 //              end.a, end.r, end.g, end.b);
  65         n.build(16, pal, start, end);
  66 //      for (int i=0; i<16; i++)
  67 //              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);
  68 //      eDebug("");
  69         return n;
  70 }
  71
  72 fontRenderClass *fontRenderClass::getInstance()
  73 {
  74         return instance;
  75 }
  76
  77 FT_Error myFTC_Face_Requester(FTC_FaceID        face_id,
  78                                                                                                                         FT_Library      library,
  79                                                                                                                         FT_Pointer      request_data,
  80                                                                                                                         FT_Face*                aface)
  81 {
  82         return ((fontRenderClass*)request_data)->FTC_Face_Requester(face_id, aface);
  83 }
  84
  85
  86 FT_Error fontRenderClass::FTC_Face_Requester(FTC_FaceID face_id, FT_Face* aface)
  87 {
  88         fontListEntry *font=(fontListEntry *)face_id;
  89         if (!font)
  90                 return -1;
  91
  92 //      eDebug("[FONT] FTC_Face_Requester (%s)", font->face.c_str());
  93
  94         int error;
  95         if ((error=FT_New_Face(library, font->filename.c_str(), 0, aface)))
  96         {
  97                 eDebug(" failed: %s", strerror(error));
  98                 return error;
  99         }
 100         FT_Select_Charmap(*aface, ft_encoding_unicode);
 101         return 0;
 102 }
 103
 104 FTC_FaceID fontRenderClass::getFaceID(const std::string &face)
 105 {
 106         for (fontListEntry *f=font; f; f=f->next)
 107         {
 108                 if (f->face == face)
 109                         return (FTC_FaceID)f;
 110         }
 111         return 0;
 112 }
 113
 114 FT_Error fontRenderClass::getGlyphBitmap(FTC_Image_Desc *font, FT_ULong glyph_index, FTC_SBit *sbit)
 115 {
 116         FT_Error res=FTC_SBit_Cache_Lookup(sbitsCache, font, glyph_index, sbit);
 117         return res;
 118 }
 119
 120 std::string fontRenderClass::AddFont(const std::string &filename, const std::string &name, int scale)
 121 {
 122         eDebugNoNewLine("[FONT] adding font %s...", filename.c_str());
 123         fflush(stdout);
 124         int error;
 125         fontListEntry *n=new fontListEntry;
 126
 127         n->scale=scale;
 128         FT_Face face;
 129         singleLock s(ftlock);
 130
 131         if ((error=FT_New_Face(library, filename.c_str(), 0, &face)))
 132                 eFatal(" failed: %s", strerror(error));
 133
 134         n->filename=filename;
 135         n->face=name;
 136         FT_Done_Face(face);
 137
 138         n->next=font;
 139         eDebug("OK (%s)", n->face.c_str());
 140         font=n;
 141
 142         return n->face;
 143 }
 144
 145 fontRenderClass::fontListEntry::~fontListEntry()
 146 {
 147 }
 148
 149 fontRenderClass::fontRenderClass(): fb(fbClass::getInstance())
 150 {
 151         instance=this;
 152         eDebug("[FONT] initializing lib...");
 153         {
 154                 if (FT_Init_FreeType(&library))
 155                 {
 156                         eDebug("[FONT] initializing failed.");
 157                         return;
 158                 }
 159         }
 160         eDebug("[FONT] loading fonts...");
 161         fflush(stdout);
 162         font=0;
 163
 164         int maxbytes=4*1024*1024;
 165         eDebug("[FONT] Intializing font cache, using max. %dMB...", maxbytes/1024/1024);
 166         fflush(stdout);
 167         {
 168                 if (FTC_Manager_New(library, 8, 8, maxbytes, myFTC_Face_Requester, this, &cacheManager))
 169                 {
 170                         eDebug("[FONT] initializing font cache failed!");
 171                         return;
 172                 }
 173                 if (!cacheManager)
 174                 {
 175                         eDebug("[FONT] initializing font cache manager error.");
 176                         return;
 177                 }
 178                 if (FTC_SBit_Cache_New(cacheManager, &sbitsCache))
 179                 {
 180                         eDebug("[FONT] initializing font cache sbit failed!");
 181                         return;
 182                 }
 183                 if (FTC_Image_Cache_New(cacheManager, &imageCache))
 184                 {
 185                         eDebug("[FONT] initializing font cache imagecache failed!");
 186                 }
 187         }
 188         return;
 189 }
 190
 191 float fontRenderClass::getLineHeight(const gFont& font)
 192 {
 193         if (!instance)
 194                 return 0;
 195         ePtr<Font> fnt;
 196         getFont(fnt, font.family.c_str(), font.pointSize);
 197         if (!fnt)
 198                 return 0;
 199         singleLock s(ftlock);
 200         FT_Face current_face;
 201         if (FTC_Manager_Lookup_Size(cacheManager, &fnt->font.font, &current_face, &fnt->size)<0)
 202         {
 203                 delete fnt;
 204                 eDebug("FTC_Manager_Lookup_Size failed!");
 205                 return 0;
 206         }
 207         int linegap=current_face->size->metrics.height-(current_face->size->metrics.ascender+current_face->size->metrics.descender);
 208         float height=(current_face->size->metrics.ascender+current_face->size->metrics.descender+linegap)/64.0;
 209         return height;
 210 }
 211
 212 fontRenderClass::~fontRenderClass()
 213 {
 214         singleLock s(ftlock);
 215         while(font)
 216         {
 217                 fontListEntry *f=font;
 218                 font=font->next;
 219                 delete f;
 220         }
 221 //      auskommentiert weil freetype und enigma die kritische masse des suckens ueberschreiten.
 222 //      FTC_Manager_Done(cacheManager);
 223 //      FT_Done_FreeType(library);
 224 }
 225
 226 int fontRenderClass::getFont(ePtr<Font> &font, const std::string &face, int size, int tabwidth)
 227 {
 228         FTC_FaceID id=getFaceID(face);
 229         if (!id)
 230         {
 231                 font = 0;
 232                 return -1;
 233         }
 234         font = new Font(this, id, size * ((fontListEntry*)id)->scale / 100, tabwidth);
 235         return 0;
 236 }
 237
 238 DEFINE_REF(Font);
 239
 240 Font::Font(fontRenderClass *render, FTC_FaceID faceid, int isize, int tw): tabwidth(tw)
 241 {
 242         renderer=render;
 243         font.font.face_id=faceid;
 244         font.font.pix_width     = isize;
 245         font.font.pix_height = isize;
 246         font.image_type = ftc_image_grays;
 247         height=isize;
 248         if (tabwidth==-1)
 249                 tabwidth=8*isize;
 250 //      font.image_type |= ftc_image_flag_autohinted;
 251 }
 252
 253 FT_Error Font::getGlyphBitmap(FT_ULong glyph_index, FTC_SBit *sbit)
 254 {
 255         return renderer->getGlyphBitmap(&font, glyph_index, sbit);
 256 }
 257
 258 Font::~Font()
 259 {
 260 }
 261
 262 DEFINE_REF(eTextPara);
 263
 264 int eTextPara::appendGlyph(Font *current_font, FT_Face current_face, FT_UInt glyphIndex, int flags, int rflags)
 265 {
 266         FTC_SBit glyph;
 267         if (current_font->getGlyphBitmap(glyphIndex, &glyph))
 268                 return 1;
 269
 270         int nx=cursor.x();
 271
 272         nx+=glyph->xadvance;
 273
 274         if (
 275                         (rflags&RS_WRAP) &&
 276                         (nx >= area.right())
 277                 )
 278         {
 279                 int cnt = 0;
 280                 glyphString::reverse_iterator i(glyphs.rbegin());
 281                 while (i != glyphs.rend())
 282                 {
 283                         if (i->flags&(GS_ISSPACE|GS_ISFIRST))
 284                                 break;
 285                         cnt++;
 286                         ++i;
 287                 }
 288                 if (i != glyphs.rend()
 289                         && ((i->flags&(GS_ISSPACE|GS_ISFIRST))==GS_ISSPACE)
 290                         && cnt )
 291                 {
 292                         --i;
 293                         int linelength=cursor.x()-i->x;
 294                         i->flags|=GS_ISFIRST;
 295                         ePoint offset=ePoint(i->x, i->y);
 296                         newLine(rflags);
 297                         offset-=cursor;
 298                         do
 299                         {
 300                                 i->x-=offset.x();
 301                                 i->y-=offset.y();
 302                                 i->bbox.moveBy(-offset.x(), -offset.y());
 303                         }
 304                         while (i-- != glyphs.rbegin()); // rearrange them into the next line
 305                         cursor+=ePoint(linelength, 0);  // put the cursor after that line
 306                 }
 307                 else
 308                 {
 309                         if (cnt)
 310                         {
 311                                 newLine(rflags);
 312                                 flags|=GS_ISFIRST;
 313                         }
 314                 }
 315         }
 316
 317         int xadvance=glyph->xadvance, kern=0;
 318
 319         if (previous && use_kerning)
 320         {
 321                 FT_Vector delta;
 322                 FT_Get_Kerning(current_face, previous, glyphIndex, ft_kerning_default, &delta);
 323                 kern=delta.x>>6;
 324         }
 325
 326         pGlyph ng;
 327         ng.bbox.setLeft( (flags&GS_ISFIRST|cursor.x()-1)+glyph->left );
 328         ng.bbox.setTop( cursor.y() - glyph->top );
 329         ng.bbox.setWidth( glyph->width );
 330         ng.bbox.setHeight( glyph->height );
 331
 332         xadvance += kern;
 333         ng.bbox.setWidth(xadvance);
 334
 335         ng.x = cursor.x()+kern;
 336         ng.y = cursor.y();
 337         ng.w = xadvance;
 338         ng.font = current_font;
 339         ng.glyph_index = glyphIndex;
 340         ng.flags = flags;
 341         glyphs.push_back(ng);
 342
 343         cursor += ePoint(xadvance, 0);
 344         previous = glyphIndex;
 345         return 0;
 346 }
 347
 348 void eTextPara::calc_bbox()
 349 {
 350         if (!glyphs.size())
 351         {
 352                 bboxValid = 0;
 353                 boundBox = eRect();
 354                 return;
 355         }
 356
 357         bboxValid = 1;
 358
 359         glyphString::iterator i(glyphs.begin());
 360
 361         boundBox = i->bbox;
 362         ++i;
 363
 364         for (; i != glyphs.end(); ++i)
 365         {
 366                 if ( i->flags & GS_ISSPACE )
 367                         continue;
 368                 if ( i->bbox.left() < boundBox.left() )
 369                         boundBox.setLeft( i->bbox.left() );
 370                 if ( i->bbox.top() < boundBox.top() )
 371                         boundBox.setTop( i->bbox.top() );
 372                 if ( i->bbox.right() > boundBox.right() )
 373                         boundBox.setRight( i->bbox.right() );
 374                 if ( i->bbox.bottom() > boundBox.bottom() )
 375                         boundBox.setBottom( i->bbox.bottom() );
 376         }
 377 //      eDebug("boundBox left = %i, top = %i, right = %i, bottom = %i", boundBox.left(), boundBox.top(), boundBox.right(), boundBox.bottom() );
 378 }
 379
 380 void eTextPara::newLine(int flags)
 381 {
 382         if (maximum.width()<cursor.x())
 383                 maximum.setWidth(cursor.x());
 384         cursor.setX(left);
 385         previous=0;
 386         int linegap=current_face->size->metrics.height-(current_face->size->metrics.ascender+current_face->size->metrics.descender);
 387         cursor+=ePoint(0, (current_face->size->metrics.ascender+current_face->size->metrics.descender+linegap)>>6);
 388         if (maximum.height()<cursor.y())
 389                 maximum.setHeight(cursor.y());
 390         previous=0;
 391 }
 392
 393 eTextPara::~eTextPara()
 394 {
 395         clear();
 396 }
 397
 398 void eTextPara::setFont(const gFont *font)
 399 {
 400         ePtr<Font> fnt, replacement;
 401         fontRenderClass::getInstance()->getFont(fnt, font->family.c_str(), font->pointSize);
 402         if (!fnt)
 403                 eWarning("FONT '%s' MISSING!", font->family.c_str());
 404         fontRenderClass::getInstance()->getFont(replacement, replacement_facename.c_str(), font->pointSize);
 405         setFont(fnt, replacement);
 406 }
 407
 408 std::string eTextPara::replacement_facename;
 409 std::set<int> eTextPara::forced_replaces;
 410
 411 void eTextPara::setFont(Font *fnt, Font *replacement)
 412 {
 413         if (!fnt)
 414                 return;
 415         current_font=fnt;
 416         replacement_font=replacement;
 417         singleLock s(ftlock);
 418
 419                         // we ask for replacment_font first becauseof the cache
 420         if (replacement_font)
 421         {
 422                 if (FTC_Manager_Lookup_Size(fontRenderClass::instance->cacheManager,
 423                                 &replacement_font->font.font, &replacement_face,
 424                                 &replacement_font->size)<0)
 425                 {
 426                         eDebug("FTC_Manager_Lookup_Size failed!");
 427                         return;
 428                 }
 429         }
 430         if (current_font)
 431         {
 432                 if (FTC_Manager_Lookup_Size(fontRenderClass::instance->cacheManager, &current_font->font.font, &current_face, &current_font->size)<0)
 433                 {
 434                         eDebug("FTC_Manager_Lookup_Size failed!");
 435                         return;
 436                 }
 437         }
 438         cache_current_font=&current_font->font.font;
 439         previous=0;
 440         use_kerning=FT_HAS_KERNING(current_face);
 441 }
 442
 443 void
 444 shape (std::vector<unsigned long> &string, const std::vector<unsigned long> &text);
 445
 446 int eTextPara::renderString(const char *string, int rflags)
 447 {
 448         singleLock s(ftlock);
 449
 450         if (!current_font)
 451                 return -1;
 452
 453         if (cursor.y()==-1)
 454         {
 455                 cursor=ePoint(area.x(), area.y()+(current_face->size->metrics.ascender>>6));
 456                 left=cursor.x();
 457         }
 458
 459         if (&current_font->font.font != cache_current_font)
 460         {
 461                 if (FTC_Manager_Lookup_Size(fontRenderClass::instance->cacheManager, &current_font->font.font, &current_face, &current_font->size)<0)
 462                 {
 463                         eDebug("FTC_Manager_Lookup_Size failed!");
 464                         return -1;
 465                 }
 466                 cache_current_font=&current_font->font.font;
 467         }
 468
 469         std::vector<unsigned long> uc_string, uc_visual;
 470         if (string)
 471                 uc_string.reserve(strlen(string));
 472
 473         const char *p = string ? string : "";
 474
 475         while (*p)
 476         {
 477                 unsigned int unicode=(unsigned char)*p++;
 478
 479                 if (unicode & 0x80) // we have (hopefully) UTF8 here, and we assume that the encoding is VALID
 480                 {
 481                         if ((unicode & 0xE0)==0xC0) // two bytes
 482                         {
 483                                 unicode&=0x1F;
 484                                 unicode<<=6;
 485                                 if (*p)
 486                                         unicode|=(*p++)&0x3F;
 487                         } else if ((unicode & 0xF0)==0xE0) // three bytes
 488                         {
 489                                 unicode&=0x0F;
 490                                 unicode<<=6;
 491                                 if (*p)
 492                                         unicode|=(*p++)&0x3F;
 493                                 unicode<<=6;
 494                                 if (*p)
 495                                         unicode|=(*p++)&0x3F;
 496                         } else if ((unicode & 0xF8)==0xF0) // four bytes
 497                         {
 498                                 unicode&=0x07;
 499                                 unicode<<=6;
 500                                 if (*p)
 501                                         unicode|=(*p++)&0x3F;
 502                                 unicode<<=6;
 503                                 if (*p)
 504                                         unicode|=(*p++)&0x3F;
 505                                 unicode<<=6;
 506                                 if (*p)
 507                                         unicode|=(*p++)&0x3F;
 508                         }
 509                 }
 510                 uc_string.push_back(unicode);
 511         }
 512
 513         std::vector<unsigned long> uc_shape;
 514
 515                 // character -> glyph conversion
 516         shape(uc_shape, uc_string);
 517
 518                 // now do the usual logical->visual reordering
 519 #ifdef HAVE_FRIBIDI
 520         FriBidiCharType dir=FRIBIDI_TYPE_ON;
 521         {
 522                 int size=uc_shape.size();
 523                 uc_visual.resize(size);
 524                 // gaaanz lahm, aber anders geht das leider nicht, sorry.
 525                 FriBidiChar array[size], target[size];
 526                 std::copy(uc_shape.begin(), uc_shape.end(), array);
 527                 fribidi_log2vis(array, size, &dir, target, 0, 0, 0);
 528                 uc_visual.assign(target, target+size);
 529         }
 530 #else
 531         uc_visual=uc_shape;
 532 #endif
 533
 534         glyphs.reserve(uc_visual.size());
 535
 536         int nextflags = 0;
 537
 538         for (std::vector<unsigned long>::const_iterator i(uc_visual.begin());
 539                 i != uc_visual.end(); ++i)
 540         {
 541                 int isprintable=1;
 542                 int flags = nextflags;
 543                 nextflags = 0;
 544                 if (!(rflags&RS_DIRECT))
 545                 {
 546                         switch (*i)
 547                         {
 548                         case '\\':
 549                         {
 550                                 unsigned long c = *(i+1);
 551                                 switch (c)
 552                                 {
 553                                         case 'n':
 554                                                 i++;
 555                                                 goto newline;
 556                                         case 't':
 557                                                 i++;
 558                                                 goto tab;
 559                                         case 'r':
 560                                                 i++;
 561                                                 goto nprint;
 562                                         default:
 563                                         ;
 564                                 }
 565                                 break;
 566                         }
 567                         case '\t':
 568 tab:            isprintable=0;
 569                                 cursor+=ePoint(current_font->tabwidth, 0);
 570                                 cursor-=ePoint(cursor.x()%current_font->tabwidth, 0);
 571                                 break;
 572                         case 0x8A:
 573                         case 0xE08A:
 574                         case '\n':
 575 newline:isprintable=0;
 576                                 newLine(rflags);
 577                                 nextflags|=GS_ISFIRST;
 578                                 break;
 579                         case '\r':
 580                         case 0x86: case 0xE086:
 581                         case 0x87: case 0xE087:
 582 nprint: isprintable=0;
 583                                 break;
 584                         case ' ':
 585                                 flags|=GS_ISSPACE;
 586                         default:
 587                                 break;
 588                         }
 589                 }
 590                 if (isprintable)
 591                 {
 592                         FT_UInt index = 0;
 593
 594                         if (forced_replaces.find(*i) == forced_replaces.end())
 595                                 index=(rflags&RS_DIRECT)? *i : FT_Get_Char_Index(current_face, *i);
 596
 597                         if (!index)
 598                         {
 599                                 if (replacement_face)
 600                                         index=(rflags&RS_DIRECT)? *i : FT_Get_Char_Index(replacement_face, *i);
 601
 602                                 if (!index)
 603                                         eDebug("unicode %d ('%c') not present", *i, *i);
 604                                 else
 605                                         appendGlyph(replacement_font, replacement_face, index, flags, rflags);
 606                         } else
 607                                 appendGlyph(current_font, current_face, index, flags, rflags);
 608                 }
 609         }
 610         bboxValid=false;
 611         calc_bbox();
 612 #ifdef HAVE_FRIBIDI
 613         if (dir & FRIBIDI_MASK_RTL)
 614                 realign(dirRight);
 615 #endif
 616         return 0;
 617 }
 618
 619 void eTextPara::blit(gDC &dc, const ePoint &offset, const gRGB &background, const gRGB &foreground)
 620 {
 621         singleLock s(ftlock);
 622
 623         if (!current_font)
 624                 return;
 625
 626         if (&current_font->font.font != cache_current_font)
 627         {
 628                 if (FTC_Manager_Lookup_Size(fontRenderClass::instance->cacheManager, &current_font->font.font, &current_face, &current_font->size)<0)
 629                 {
 630                         eDebug("FTC_Manager_Lookup_Size failed!");
 631                         return;
 632                 }
 633                 cache_current_font=&current_font->font.font;
 634         }
 635
 636         ePtr<gPixmap> target;
 637         dc.getPixmap(target);
 638         gSurface *surface = target->surface;
 639
 640         register int opcode;
 641
 642         gColor *lookup8, lookup8_invert[16];
 643         gColor *lookup8_normal=0;
 644
 645         __u32 lookup32_normal[16], lookup32_invert[16], *lookup32;
 646
 647         if (surface->bpp == 8)
 648         {
 649                 if (surface->clut.data)
 650                 {
 651                         lookup8_normal=getColor(surface->clut, background, foreground).lookup;
 652
 653                         int i;
 654                         for (i=0; i<16; ++i)
 655                                 lookup8_invert[i] = lookup8_normal[i^0xF];
 656
 657                         opcode=0;
 658                 } else
 659                         opcode=1;
 660         } else if (surface->bpp == 32)
 661         {
 662                 opcode=3;
 663                 if (surface->clut.data)
 664                 {
 665                         lookup8=getColor(surface->clut, background, foreground).lookup;
 666                         for (int i=0; i<16; ++i)
 667                                 lookup32_normal[i]=((surface->clut.data[lookup8[i]].a<<24)|
 668                                         (surface->clut.data[lookup8[i]].r<<16)|
 669                                         (surface->clut.data[lookup8[i]].g<<8)|
 670                                         (surface->clut.data[lookup8[i]].b))^0xFF000000;
 671                 } else
 672                 {
 673                         for (int i=0; i<16; ++i)
 674                                 lookup32_normal[i]=(0x010101*i)|0xFF000000;
 675                 }
 676                 for (int i=0; i<16; ++i)
 677                         lookup32_invert[i]=lookup32_normal[i^0xF];
 678         } else
 679         {
 680                 eWarning("can't render to %dbpp", surface->bpp);
 681                 return;
 682         }
 683
 684         gRegion area(eRect(0, 0, surface->x, surface->y));
 685         gRegion clip = dc.getClip() & area;
 686
 687         int buffer_stride=surface->stride;
 688
 689         for (unsigned int c = 0; c < clip.rects.size(); ++c)
 690         {
 691                 for (glyphString::iterator i(glyphs.begin()); i != glyphs.end(); ++i)
 692                 {
 693                         if (!(i->flags & GS_INVERT))
 694                         {
 695                                 lookup8 = lookup8_normal;
 696                                 lookup32 = lookup32_normal;
 697                         } else
 698                         {
 699                                 lookup8 = lookup8_invert;
 700                                 lookup32 = lookup32_invert;
 701                         }
 702
 703                         static FTC_SBit glyph_bitmap;
 704                         if (fontRenderClass::instance->getGlyphBitmap(&i->font->font, i->glyph_index, &glyph_bitmap))
 705                                 continue;
 706                         int rx=i->x+glyph_bitmap->left + offset.x();
 707                         int ry=i->y-glyph_bitmap->top  + offset.y();
 708
 709                         __u8 *d=(__u8*)(surface->data)+buffer_stride*ry+rx*surface->bypp;
 710                         __u8 *s=glyph_bitmap->buffer;
 711                         register int sx=glyph_bitmap->width;
 712                         int sy=glyph_bitmap->height;
 713                         if ((sy+ry) >= clip.rects[c].bottom())
 714                                 sy=clip.rects[c].bottom()-ry;
 715                         if ((sx+rx) >= clip.rects[c].right())
 716                                 sx=clip.rects[c].right()-rx;
 717                         if (rx < clip.rects[c].left())
 718                         {
 719                                 int diff=clip.rects[c].left()-rx;
 720                                 s+=diff;
 721                                 sx-=diff;
 722                                 rx+=diff;
 723                                 d+=diff*surface->bypp;
 724                         }
 725                         if (ry < clip.rects[c].top())
 726                         {
 727                                 int diff=clip.rects[c].top()-ry;
 728                                 s+=diff*glyph_bitmap->pitch;
 729                                 sy-=diff;
 730                                 ry+=diff;
 731                                 d+=diff*buffer_stride;
 732                         }
 733                         if (sx>0)
 734                                 for (int ay=0; ay<sy; ay++)
 735                                 {
 736                                         if (!opcode)            // 4bit lookup to 8bit
 737                                         {
 738                                                 register __u8 *td=d;
 739                                                 register int ax;
 740
 741                                                 for (ax=0; ax<sx; ax++)
 742                                                 {
 743                                                         register int b=(*s++)>>4;
 744                                                         if(b)
 745                                                                 *td++=lookup8[b];
 746                                                         else
 747                                                                 td++;
 748                                                 }
 749                                         } else if (opcode == 1) // 8bit direct
 750                                         {
 751                                                 register __u8 *td=d;
 752                                                 register int ax;
 753                                                 for (ax=0; ax<sx; ax++)
 754                                                 {
 755                                                         register int b=*s++;
 756                                                         *td++^=b;
 757                                                 }
 758                                         } else
 759                                         {
 760                                                 register __u32 *td=(__u32*)d;
 761                                                 register int ax;
 762                                                 for (ax=0; ax<sx; ax++)
 763                                                 {
 764                                                         register int b=(*s++)>>4;
 765                                                         if(b)
 766                                                                 *td++=lookup32[b];
 767                                                         else
 768                                                                 td++;
 769                                                 }
 770                                         }
 771                                         s+=glyph_bitmap->pitch-sx;
 772                                         d+=buffer_stride;
 773                                 }
 774                 }
 775         }
 776 }
 777
 778 void eTextPara::realign(int dir)        // der code hier ist ein wenig merkwuerdig.
 779 {
 780         glyphString::iterator begin(glyphs.begin()), c(glyphs.begin()), end(glyphs.begin()), last;
 781         if (dir==dirLeft)
 782                 return;
 783         while (c != glyphs.end())
 784         {
 785                 int linelength=0;
 786                 int numspaces=0, num=0;
 787                 begin=end;
 788
 789                 ASSERT( end != glyphs.end());
 790
 791                         // zeilenende suchen
 792                 do {
 793                         last=end;
 794                         ++end;
 795                 } while ((end != glyphs.end()) && (!(end->flags&GS_ISFIRST)));
 796                         // end zeigt jetzt auf begin der naechsten zeile
 797
 798                 for (c=begin; c!=end; ++c)
 799                 {
 800                                 // space am zeilenende skippen
 801                         if ((c==last) && (c->flags&GS_ISSPACE))
 802                                 continue;
 803
 804                         if (c->flags&GS_ISSPACE)
 805                                 numspaces++;
 806                         linelength+=c->w;
 807                         num++;
 808                 }
 809
 810                 if (!num)               // line mit nur einem space
 811                         continue;
 812
 813                 switch (dir)
 814                 {
 815                 case dirRight:
 816                 case dirCenter:
 817                 {
 818                         int offset=area.width()-linelength;
 819                         if (dir==dirCenter)
 820                                 offset/=2;
 821                         offset+=area.left();
 822                         while (begin != end)
 823                         {
 824                                 begin->bbox.moveBy(offset-begin->x,0);
 825                                 begin->x=offset;
 826                                 offset+=begin->w;
 827                                 ++begin;
 828                         }
 829                         break;
 830                 }
 831                 case dirBlock:
 832                 {
 833                         if (end == glyphs.end())                // letzte zeile linksbuendig lassen
 834                                 continue;
 835                         int spacemode;
 836                         if (numspaces)
 837                                 spacemode=1;
 838                         else
 839                                 spacemode=0;
 840                         if ((!spacemode) && (num<2))
 841                                 break;
 842                         int off=(area.width()-linelength)*256/(spacemode?numspaces:(num-1));
 843                         int curoff=0;
 844                         while (begin != end)
 845                         {
 846                                 int doadd=0;
 847                                 if ((!spacemode) || (begin->flags&GS_ISSPACE))
 848                                         doadd=1;
 849                                 begin->x+=curoff>>8;
 850                                 begin->bbox.moveBy(curoff>>8,0);
 851                                 if (doadd)
 852                                         curoff+=off;
 853                                 ++begin;
 854                         }
 855                         break;
 856                 }
 857                 }
 858         }
 859         bboxValid=false;
 860         calc_bbox();
 861 }
 862
 863 void eTextPara::clear()
 864 {
 865         singleLock s(ftlock);
 866
 867         current_font = 0;
 868         replacement_font = 0;
 869
 870         glyphs.clear();
 871 }
 872
 873 eAutoInitP0<fontRenderClass> init_fontRenderClass(eAutoInitNumbers::graphic-1, "Font Render Class");