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/system/elock.h>
  18 #include <lib/system/init.h>
  19 #include <lib/system/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 =
  33         PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP;   // RECURSIVE
  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
  90         if (!font)
  91                 return -1;
  92
  93 //      eDebug("[FONT] FTC_Face_Requester (%s)", font->face.c_str());
  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 eString &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 eString fontRenderClass::AddFont(const eString &filename, const eString &name, int scale)
 121 {
 122         eDebugNoNewLine("[FONT] adding font %s...", filename.c_str());
 123         int error;
 124         fontListEntry *n=new fontListEntry;
 125
 126         n->scale=scale;
 127         FT_Face face;
 128         singleLock s(ftlock);
 129
 130         if ((error=FT_New_Face(library, filename.c_str(), 0, &face)))
 131                 eFatal(" failed: %s", strerror(error));
 132
 133         n->filename=filename;
 134         n->face=name;
 135         FT_Done_Face(face);
 136
 137         n->next=font;
 138         eDebug("OK (%s)", n->face.c_str());
 139         font=n;
 140
 141         return n->face;
 142 }
 143
 144 fontRenderClass::fontListEntry::~fontListEntry()
 145 {
 146 }
 147
 148 fontRenderClass::fontRenderClass()
 149         :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         font=0;
 162         int maxbytes=4*1024*1024;
 163         eDebug("[FONT] Intializing font cache, using max. %dMB...", maxbytes/1024/1024);
 164
 165         if (FTC_Manager_New(library, 8, 8, maxbytes, myFTC_Face_Requester, this, &cacheManager))
 166         {
 167                 eDebug("[FONT] initializing font cache failed!");
 168                 return;
 169         }
 170
 171         if (!cacheManager)
 172         {
 173                 eDebug("[FONT] initializing font cache manager error.");
 174                 return;
 175         }
 176
 177         if (FTC_SBit_Cache_New(cacheManager, &sbitsCache))
 178         {
 179                 eDebug("[FONT] initializing font cache sbit failed!");
 180                 return;
 181         }
 182
 183         if (FTC_Image_Cache_New(cacheManager, &imageCache))
 184                 eDebug("[FONT] initializing font cache imagecache failed!");
 185 }
 186
 187 float fontRenderClass::getLineHeight(const gFont& font)
 188 {
 189         if (!instance)
 190                 return 0;
 191         Font *fnt = getFont( font.family.c_str(), font.pointSize);
 192         if (!fnt)
 193                 return 0;
 194         singleLock s(ftlock);
 195         FT_Face current_face;
 196         if (FTC_Manager_Lookup_Size(cacheManager, &fnt->font.font, &current_face, &fnt->size)<0)
 197         {
 198                 delete fnt;
 199                 eDebug("FTC_Manager_Lookup_Size failed!");
 200                 return 0;
 201         }
 202         int linegap=current_face->size->metrics.height-(current_face->size->metrics.ascender+current_face->size->metrics.descender);
 203         float height=(current_face->size->metrics.ascender+current_face->size->metrics.descender+linegap/2.0)/64;
 204         delete fnt;
 205         return height;
 206 }
 207
 208
 209 fontRenderClass::~fontRenderClass()
 210 {
 211         singleLock s(ftlock);
 212         while(font)
 213         {
 214                 fontListEntry *f=font;
 215                 font=font->next;
 216                 delete f;
 217         }
 218 //      auskommentiert weil freetype und enigma die kritische masse des suckens ueberschreiten.
 219 //      FTC_Manager_Done(cacheManager);
 220 //      FT_Done_FreeType(library);
 221 }
 222
 223 Font *fontRenderClass::getFont(const eString &face, int size, int tabwidth)
 224 {
 225         FTC_FaceID id=getFaceID(face);
 226         if (!id)
 227                 return 0;
 228         return new Font(this, id, size * ((fontListEntry*)id)->scale / 100, tabwidth);
 229 }
 230
 231 Font::Font(fontRenderClass *render, FTC_FaceID faceid, int isize, int tw)
 232         :renderer(render), ref(0), tabwidth(tw),  height(isize)
 233 {
 234         font.font.face_id=faceid;
 235         font.font.pix_width     = isize;
 236         font.font.pix_height = isize;
 237         font.image_type = ftc_image_grays;
 238         if (tabwidth==-1)
 239                 tabwidth=8*isize;
 240 //      font.image_type |= ftc_image_flag_autohinted;
 241 }
 242
 243 FT_Error Font::getGlyphBitmap(FT_ULong glyph_index, FTC_SBit *sbit)
 244 {
 245         return renderer->getGlyphBitmap(&font, glyph_index, sbit);
 246 }
 247
 248 Font::~Font()
 249 {
 250 }
 251
 252 void Font::lock()
 253 {
 254         ref++;
 255 }
 256
 257 void Font::unlock()
 258 {
 259         ref--;
 260         if (!ref)
 261                 delete this;
 262 }
 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
 334         ng.x=cursor.x()+kern;
 335         ng.y=cursor.y();
 336         ng.w=xadvance;
 337         ng.font=current_font;
 338         ng.font->lock();
 339         ng.glyph_index=glyphIndex;
 340         ng.flags=flags;
 341
 342         glyphs.push_back(ng);
 343
 344         cursor+=ePoint(xadvance, 0);
 345         previous=glyphIndex;
 346         return 0;
 347 }
 348
 349 void eTextPara::calc_bbox()
 350 {
 351         boundBox.setLeft( 32000 );
 352         boundBox.setTop( 32000 );
 353         boundBox.setRight( -32000 );         // for each glyph image, compute its bounding box, translate it,
 354         boundBox.setBottom( -32000 );
 355         // and grow the string bbox
 356
 357         for ( glyphString::iterator i(glyphs.begin()); i != glyphs.end(); ++i)
 358         {
 359                 if ( i->flags & GS_ISSPACE )
 360                         continue;
 361                 if ( i->bbox.left() < boundBox.left() )
 362                         boundBox.setLeft( i->bbox.left() );
 363                 if ( i->bbox.top() < boundBox.top() )
 364                         boundBox.setTop( i->bbox.top() );
 365                 if ( i->bbox.right() > boundBox.right() )
 366                         boundBox.setRight( i->bbox.right() );
 367                 if ( i->bbox.bottom() > boundBox.bottom() )
 368                         boundBox.setBottom( i->bbox.bottom() );
 369         }
 370 //      eDebug("boundBox left = %i, top = %i, right = %i, bottom = %i", boundBox.left(), boundBox.top(), boundBox.right(), boundBox.bottom() );
 371         if ( glyphs.size() )
 372                 bboxValid=1;
 373 }
 374
 375 void eTextPara::newLine(int flags)
 376 {
 377         if (maximum.width()<cursor.x())
 378                 maximum.setWidth(cursor.x());
 379         cursor.setX(left);
 380         previous=0;
 381         int linegap=current_face->size->metrics.height-(current_face->size->metrics.ascender+current_face->size->metrics.descender);
 382         cursor+=ePoint(0, (current_face->size->metrics.ascender+current_face->size->metrics.descender+linegap*1/2)>>6);
 383         if (maximum.height()<cursor.y())
 384                 maximum.setHeight(cursor.y());
 385         previous=0;
 386 }
 387
 388 eTextPara::~eTextPara()
 389 {
 390         clear();
 391         if (refcnt>=0)
 392                 eFatal("verdammt man der war noch gelockt :/\n");
 393 }
 394
 395 void eTextPara::destroy()
 396 {
 397         if (!refcnt--)
 398                 delete this;
 399 }
 400
 401 eTextPara *eTextPara::grab()
 402 {
 403         refcnt++;
 404         return this;
 405 }
 406
 407 void eTextPara::setFont(const gFont &font)
 408 {
 409         if (refcnt)
 410                 eFatal("mod. after lock");
 411
 412         Font *fnt=fontRenderClass::getInstance()->getFont(font.family.c_str(), font.pointSize);
 413         if (!fnt)
 414                 eWarning("FONT '%s' MISSING!", font.family.c_str());
 415         setFont(fnt,
 416                 fontRenderClass::getInstance()->getFont(replacement_facename.c_str(), font.pointSize));
 417 }
 418
 419 eString eTextPara::replacement_facename;
 420
 421 void eTextPara::setFont(Font *fnt, Font *replacement)
 422 {
 423         if (refcnt)
 424                 eFatal("mod. after lock");
 425
 426         if (!fnt)
 427                 return;
 428
 429         if (current_font)
 430         {
 431                 if ( !current_font->ref )
 432                         delete current_font;
 433         }
 434         current_font=fnt;
 435         if (replacement_font)
 436         {
 437                 if (!replacement_font->ref)
 438                         delete replacement_font;
 439         }
 440         replacement_font=replacement;
 441         singleLock s(ftlock);
 442
 443                         // we ask for replacment_font first becauseof the cache
 444         if (replacement_font)
 445         {
 446                 if (FTC_Manager_Lookup_Size(fontRenderClass::instance->cacheManager,
 447                                 &replacement_font->font.font, &replacement_face,
 448                                 &replacement_font->size)<0)
 449                 {
 450                         eDebug("FTC_Manager_Lookup_Size failed!");
 451                         return;
 452                 }
 453         }
 454         if (current_font)
 455         {
 456                 if (FTC_Manager_Lookup_Size(fontRenderClass::instance->cacheManager, &current_font->font.font, &current_face, &current_font->size)<0)
 457                 {
 458                         eDebug("FTC_Manager_Lookup_Size failed!");
 459                         return;
 460                 }
 461         }
 462         cache_current_font=&current_font->font.font;
 463         previous=0;
 464         use_kerning=FT_HAS_KERNING(current_face);
 465 }
 466
 467 void
 468 shape (std::vector<unsigned long> &string, const std::vector<unsigned long> &text);
 469
 470 int eTextPara::renderString(const eString &string, int rflags)
 471 {
 472         singleLock s(ftlock);
 473
 474         if (refcnt)
 475                 eFatal("mod. after lock");
 476
 477         if (!current_font)
 478                 return -1;
 479
 480         if (cursor.y()==-1)
 481         {
 482                 cursor=ePoint(area.x(), area.y()+(current_face->size->metrics.ascender>>6));
 483                 left=cursor.x();
 484         }
 485
 486         if (&current_font->font.font != cache_current_font)
 487         {
 488                 if (FTC_Manager_Lookup_Size(fontRenderClass::instance->cacheManager, &current_font->font.font, &current_face, &current_font->size)<0)
 489                 {
 490                         eDebug("FTC_Manager_Lookup_Size failed!");
 491                         return -1;
 492                 }
 493                 cache_current_font=&current_font->font.font;
 494         }
 495
 496         std::vector<unsigned long> uc_string, uc_visual;
 497         uc_string.reserve(string.length());
 498
 499         eString::const_iterator p(string.begin());
 500
 501         while(p != string.end())
 502         {
 503                 unsigned int unicode=*p++;
 504
 505                 if (unicode & 0x80) // we have (hopefully) UTF8 here, and we assume that the encoding is VALID
 506                 {
 507                         if ((unicode & 0xE0)==0xC0) // two bytes
 508                         {
 509                                 unicode&=0x1F;
 510                                 unicode<<=6;
 511                                 if (p != string.end())
 512                                         unicode|=(*p++)&0x3F;
 513                         } else if ((unicode & 0xF0)==0xE0) // three bytes
 514                         {
 515                                 unicode&=0x0F;
 516                                 unicode<<=6;
 517                                 if (p != string.end())
 518                                         unicode|=(*p++)&0x3F;
 519                                 unicode<<=6;
 520                                 if (p != string.end())
 521                                         unicode|=(*p++)&0x3F;
 522                         } else if ((unicode & 0xF8)==0xF0) // four bytes
 523                         {
 524                                 unicode&=0x07;
 525                                 unicode<<=6;
 526                                 if (p != string.end())
 527                                         unicode|=(*p++)&0x3F;
 528                                 unicode<<=6;
 529                                 if (p != string.end())
 530                                         unicode|=(*p++)&0x3F;
 531                                 unicode<<=6;
 532                                 if (p != string.end())
 533                                         unicode|=(*p++)&0x3F;
 534                         }
 535                 }
 536                 uc_string.push_back(unicode);
 537         }
 538
 539         std::vector<unsigned long> uc_shape;
 540
 541                 // character -> glyph conversion
 542         shape(uc_shape, uc_string);
 543
 544                 // now do the usual logical->visual reordering
 545 #ifdef HAVE_FRIBIDI
 546         FriBidiCharType dir=FRIBIDI_TYPE_ON;
 547         {
 548                 int size=uc_shape.size();
 549                 uc_visual.resize(size);
 550                 // gaaanz lahm, aber anders geht das leider nicht, sorry.
 551                 FriBidiChar array[size], target[size];
 552                 std::copy(uc_shape.begin(), uc_shape.end(), array);
 553                 fribidi_log2vis(array, size, &dir, target, 0, 0, 0);
 554                 uc_visual.assign(target, target+size);
 555         }
 556 #else
 557         uc_visual=uc_shape;
 558 #endif
 559
 560         glyphs.reserve(uc_visual.size());
 561
 562         int nextflags = 0;
 563
 564         for (std::vector<unsigned long>::const_iterator i(uc_visual.begin());
 565                 i != uc_visual.end(); ++i)
 566         {
 567                 int isprintable=1;
 568                 int flags = nextflags;
 569                 nextflags = 0;
 570                 if (!(rflags&RS_DIRECT))
 571                 {
 572                         switch (*i)
 573                         {
 574                         case '\\':
 575                         {
 576                                 unsigned long c = *(i+1);
 577                                 switch (c)
 578                                 {
 579                                         case 'n':
 580                                                 i++;
 581                                                 goto newline;
 582                                         case 't':
 583                                                 i++;
 584                                                 goto tab;
 585                                         case 'r':
 586                                                 i++;
 587                                                 goto nprint;
 588                                         default:
 589                                         ;
 590                                 }
 591                                 break;
 592                         }
 593                         case '\t':
 594 tab:            isprintable=0;
 595                                 cursor+=ePoint(current_font->tabwidth, 0);
 596                                 cursor-=ePoint(cursor.x()%current_font->tabwidth, 0);
 597                                 break;
 598                         case 0x8A:
 599                         case 0xE08A:
 600                         case '\n':
 601 newline:isprintable=0;
 602                                 newLine(rflags);
 603                                 nextflags|=GS_ISFIRST;
 604                                 break;
 605                         case '\r':
 606                         case 0x86: case 0xE086:
 607                         case 0x87: case 0xE087:
 608 nprint: isprintable=0;
 609                                 break;
 610                         case ' ':
 611                                 flags|=GS_ISSPACE;
 612                         default:
 613                                 break;
 614                         }
 615                 }
 616                 if (isprintable)
 617                 {
 618                         FT_UInt index;
 619
 620                         index=(rflags&RS_DIRECT)? *i : FT_Get_Char_Index(current_face, *i);
 621
 622                         if (!index)
 623                         {
 624                                 if (replacement_face)
 625                                         index=(rflags&RS_DIRECT)? *i : FT_Get_Char_Index(replacement_face, *i);
 626
 627                                 if (!index)
 628                                         eDebug("unicode %d ('%c') not present", *i, *i);
 629                                 else
 630                                         appendGlyph(replacement_font, replacement_face, index, flags, rflags);
 631                         } else
 632                                 appendGlyph(current_font, current_face, index, flags, rflags);
 633                 }
 634         }
 635         bboxValid=false;
 636         calc_bbox();
 637 #ifdef HAVE_FRIBIDI
 638         if (dir & FRIBIDI_MASK_RTL)
 639                 realign(dirRight);
 640 #endif
 641         return 0;
 642 }
 643
 644 void eTextPara::blit(gPixmapDC &dc, const ePoint &offset, const gRGB &background, const gRGB &foreground)
 645 {
 646         singleLock s(ftlock);
 647
 648         if (!current_font)
 649                 return;
 650
 651         if (&current_font->font.font != cache_current_font)
 652         {
 653                 if (FTC_Manager_Lookup_Size(fontRenderClass::instance->cacheManager, &current_font->font.font, &current_face, &current_font->size)<0)
 654                 {
 655                         eDebug("FTC_Manager_Lookup_Size failed!");
 656                         return;
 657                 }
 658                 cache_current_font=&current_font->font.font;
 659         }
 660
 661         gPixmap &target=dc.getPixmap();
 662
 663         register int opcode;
 664         gColor *lookup8=0;
 665         __u32 lookup32[16];
 666
 667         if (target.bpp == 8)
 668         {
 669                 if (target.clut.data)
 670                 {
 671                         lookup8=getColor(target.clut, background, foreground).lookup;
 672                         opcode=0;
 673                 } else
 674                         opcode=1;
 675         } else if (target.bpp == 32)
 676         {
 677                 opcode=3;
 678                 if (target.clut.data)
 679                 {
 680                         lookup8=getColor(target.clut, background, foreground).lookup;
 681                         for (int i=0; i<16; ++i)
 682                                 lookup32[i]=((target.clut.data[lookup8[i]].a<<24)|
 683                                         (target.clut.data[lookup8[i]].r<<16)|
 684                                         (target.clut.data[lookup8[i]].g<<8)|
 685                                         (target.clut.data[lookup8[i]].b))^0xFF000000;
 686                 } else
 687                 {
 688                         for (int i=0; i<16; ++i)
 689                                 lookup32[i]=(0x010101*i)|0xFF000000;
 690                 }
 691         } else
 692         {
 693                 eWarning("can't render to %dbpp", target.bpp);
 694                 return;
 695         }
 696
 697         eRect clip(0, 0, target.x, target.y);
 698         clip&=dc.getClip();
 699
 700         int buffer_stride=target.stride;
 701
 702         for (glyphString::iterator i(glyphs.begin()); i != glyphs.end(); ++i)
 703         {
 704                 static FTC_SBit glyph_bitmap;
 705                 if (fontRenderClass::instance->getGlyphBitmap(&i->font->font, i->glyph_index, &glyph_bitmap))
 706                         continue;
 707                 int rx=i->x+glyph_bitmap->left + offset.x();
 708                 int ry=i->y-glyph_bitmap->top  + offset.y();
 709                 __u8 *d=(__u8*)(target.data)+buffer_stride*ry+rx*target.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.bottom())
 714                         sy=clip.bottom()-ry;
 715                 if ((sx+rx) >= clip.right())
 716                         sx=clip.right()-rx;
 717                 if (rx < clip.left())
 718                 {
 719                         int diff=clip.left()-rx;
 720                         s+=diff;
 721                         sx-=diff;
 722                         rx+=diff;
 723                         d+=diff*target.bypp;
 724                 }
 725                 if (ry < clip.top())
 726                 {
 727                         int diff=clip.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                                         for (ax=0; ax<sx; ax++)
 741                                         {
 742                                                 register int b=(*s++)>>4;
 743                                                 if(b)
 744                                                         *td++=lookup8[b];
 745                                                 else
 746                                                         td++;
 747                                         }
 748                                 } else if (opcode == 1) // 8bit direct
 749                                 {
 750                                         register __u8 *td=d;
 751                                         register int ax;
 752                                         for (ax=0; ax<sx; ax++)
 753                                         {
 754                                                 register int b=*s++;
 755                                                 *td++^=b;
 756                                         }
 757                                 } else
 758                                 {
 759                                         register __u32 *td=(__u32*)d;
 760                                         register int ax;
 761                                         for (ax=0; ax<sx; ax++)
 762                                         {
 763                                                 register int b=(*s++)>>4;
 764                                                 if(b)
 765                                                         *td++=lookup32[b];
 766                                                 else
 767                                                         td++;
 768                                         }
 769                                 }
 770                                 s+=glyph_bitmap->pitch-sx;
 771                                 d+=buffer_stride;
 772                         }
 773         }
 774 }
 775
 776 void eTextPara::realign(int dir)        // der code hier ist ein wenig merkwuerdig.
 777 {
 778         if (refcnt)
 779                 eFatal("mod. after lock");
 780
 781         if (dir==dirLeft)
 782                 return;
 783
 784         glyphString::iterator begin(glyphs.begin()), c(glyphs.begin()), end(glyphs.begin()), last;
 785         while (c != glyphs.end())
 786         {
 787                 int linelength=0;
 788                 int numspaces=0, num=0;
 789                 begin=end;
 790
 791                 ASSERT( end != glyphs.end());
 792
 793                         // zeilenende suchen
 794                 do {
 795                         last=end;
 796                         ++end;
 797                 } while ((end != glyphs.end()) && (!(end->flags&GS_ISFIRST)));
 798                         // end zeigt jetzt auf begin der naechsten zeile
 799
 800                 for (c=begin; c!=end; ++c)
 801                 {
 802                                 // space am zeilenende skippen
 803                         if ((c==last) && (c->flags&GS_ISSPACE))
 804                                 continue;
 805
 806                         if (c->flags&GS_ISSPACE)
 807                                 numspaces++;
 808                         linelength+=c->w;
 809                         num++;
 810                 }
 811
 812                 if (!num)               // line mit nur einem space
 813                         continue;
 814
 815                 switch (dir)
 816                 {
 817                 case dirRight:
 818                 case dirCenter:
 819                 {
 820                         int offset=area.width()-linelength;
 821                         if (dir==dirCenter)
 822                                 offset/=2;
 823                         offset+=area.left();
 824                         while (begin != end)
 825                         {
 826                                 begin->bbox.moveBy(offset-begin->x,0);
 827                                 begin->x=offset;
 828                                 offset+=begin->w;
 829                                 ++begin;
 830                         }
 831                         break;
 832                 }
 833                 case dirBlock:
 834                 {
 835                         if (end == glyphs.end())                // letzte zeile linksbuendig lassen
 836                                 continue;
 837                         int spacemode;
 838                         if (numspaces)
 839                                 spacemode=1;
 840                         else
 841                                 spacemode=0;
 842                         if ((!spacemode) && (num<2))
 843                                 break;
 844                         int off=(area.width()-linelength)*256/(spacemode?numspaces:(num-1));
 845                         int curoff=0;
 846                         while (begin != end)
 847                         {
 848                                 int doadd=0;
 849                                 if ((!spacemode) || (begin->flags&GS_ISSPACE))
 850                                         doadd=1;
 851                                 begin->x+=curoff>>8;
 852                                 begin->bbox.moveBy(curoff>>8,0);
 853                                 if (doadd)
 854                                         curoff+=off;
 855                                 ++begin;
 856                         }
 857                         break;
 858                 }
 859                 }
 860         }
 861         bboxValid=false;
 862         calc_bbox();
 863 }
 864
 865 void eTextPara::clear()
 866 {
 867         singleLock s(ftlock);
 868
 869         if ( current_font && !current_font->ref )
 870                 delete current_font;
 871
 872         if ( replacement_font && !replacement_font->ref )
 873                 delete replacement_font;
 874
 875         for (glyphString::iterator i(glyphs.begin()); i!=glyphs.end(); ++i)
 876                 i->font->unlock();
 877         glyphs.clear();
 878 }
 879
 880 eAutoInitP0<fontRenderClass> init_fontRenderClass(eAutoInitNumbers::graphic-1, "Font Render Class");