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/2.0)/64;
 209         delete fnt;
 210         return height;
 211 }
 212
 213
 214 fontRenderClass::~fontRenderClass()
 215 {
 216         singleLock s(ftlock);
 217         while(font)
 218         {
 219                 fontListEntry *f=font;
 220                 font=font->next;
 221                 delete f;
 222         }
 223 //      auskommentiert weil freetype und enigma die kritische masse des suckens ueberschreiten.
 224 //      FTC_Manager_Done(cacheManager);
 225 //      FT_Done_FreeType(library);
 226 }
 227
 228 int fontRenderClass::getFont(ePtr<Font> &font, const std::string &face, int size, int tabwidth)
 229 {
 230         FTC_FaceID id=getFaceID(face);
 231         if (!id)
 232         {
 233                 font = 0;
 234                 return -1;
 235         }
 236         font = new Font(this, id, size * ((fontListEntry*)id)->scale / 100, tabwidth);
 237         return 0;
 238 }
 239
 240 DEFINE_REF(Font);
 241
 242 Font::Font(fontRenderClass *render, FTC_FaceID faceid, int isize, int tw): tabwidth(tw)
 243 {
 244         renderer=render;
 245         font.font.face_id=faceid;
 246         font.font.pix_width     = isize;
 247         font.font.pix_height = isize;
 248         font.image_type = ftc_image_grays;
 249         height=isize;
 250         if (tabwidth==-1)
 251                 tabwidth=8*isize;
 252 //      font.image_type |= ftc_image_flag_autohinted;
 253 }
 254
 255 FT_Error Font::getGlyphBitmap(FT_ULong glyph_index, FTC_SBit *sbit)
 256 {
 257         return renderer->getGlyphBitmap(&font, glyph_index, sbit);
 258 }
 259
 260 Font::~Font()
 261 {
 262 }
 263
 264 DEFINE_REF(eTextPara);
 265
 266 int eTextPara::appendGlyph(Font *current_font, FT_Face current_face, FT_UInt glyphIndex, int flags, int rflags)
 267 {
 268         FTC_SBit glyph;
 269         if (current_font->getGlyphBitmap(glyphIndex, &glyph))
 270                 return 1;
 271
 272         int nx=cursor.x();
 273
 274         nx+=glyph->xadvance;
 275
 276         if (
 277                         (rflags&RS_WRAP) &&
 278                         (nx >= area.right())
 279                 )
 280         {
 281                 int cnt = 0;
 282                 glyphString::reverse_iterator i(glyphs.rbegin());
 283                 while (i != glyphs.rend())
 284                 {
 285                         if (i->flags&(GS_ISSPACE|GS_ISFIRST))
 286                                 break;
 287                         cnt++;
 288                         ++i;
 289                 }
 290                 if (i != glyphs.rend()
 291                         && ((i->flags&(GS_ISSPACE|GS_ISFIRST))==GS_ISSPACE)
 292                         && cnt )
 293                 {
 294                         --i;
 295                         int linelength=cursor.x()-i->x;
 296                         i->flags|=GS_ISFIRST;
 297                         ePoint offset=ePoint(i->x, i->y);
 298                         newLine(rflags);
 299                         offset-=cursor;
 300                         do
 301                         {
 302                                 i->x-=offset.x();
 303                                 i->y-=offset.y();
 304                                 i->bbox.moveBy(-offset.x(), -offset.y());
 305                         }
 306                         while (i-- != glyphs.rbegin()); // rearrange them into the next line
 307                         cursor+=ePoint(linelength, 0);  // put the cursor after that line
 308                 }
 309                 else
 310                 {
 311                         if (cnt)
 312                         {
 313                                 newLine(rflags);
 314                                 flags|=GS_ISFIRST;
 315                         }
 316                 }
 317         }
 318
 319         int xadvance=glyph->xadvance, kern=0;
 320
 321         if (previous && use_kerning)
 322         {
 323                 FT_Vector delta;
 324                 FT_Get_Kerning(current_face, previous, glyphIndex, ft_kerning_default, &delta);
 325                 kern=delta.x>>6;
 326         }
 327
 328         pGlyph ng;
 329         ng.bbox.setLeft( (flags&GS_ISFIRST|cursor.x()-1)+glyph->left );
 330         ng.bbox.setTop( cursor.y() - glyph->top );
 331         ng.bbox.setWidth( glyph->width );
 332         ng.bbox.setHeight( glyph->height );
 333
 334         xadvance+=kern;
 335         ng.bbox.setWidth(xadvance);
 336
 337         ng.x=cursor.x()+kern;
 338         ng.y=cursor.y();
 339         ng.w=xadvance;
 340         ng.font=current_font;
 341         ng.glyph_index=glyphIndex;
 342         ng.flags=flags;
 343         glyphs.push_back(ng);
 344
 345         cursor+=ePoint(xadvance, 0);
 346         previous=glyphIndex;
 347         return 0;
 348 }
 349
 350 void eTextPara::calc_bbox()
 351 {
 352         boundBox.setLeft( 32000 );
 353         boundBox.setTop( 32000 );
 354         boundBox.setRight( -32000 );         // for each glyph image, compute its bounding box, translate it,
 355         boundBox.setBottom( -32000 );
 356         // and grow the string bbox
 357
 358         for ( glyphString::iterator i(glyphs.begin()); i != glyphs.end(); ++i)
 359         {
 360                 if ( i->flags & GS_ISSPACE )
 361                         continue;
 362                 if ( i->bbox.left() < boundBox.left() )
 363                         boundBox.setLeft( i->bbox.left() );
 364                 if ( i->bbox.top() < boundBox.top() )
 365                         boundBox.setTop( i->bbox.top() );
 366                 if ( i->bbox.right() > boundBox.right() )
 367                         boundBox.setRight( i->bbox.right() );
 368                 if ( i->bbox.bottom() > boundBox.bottom() )
 369                         boundBox.setBottom( i->bbox.bottom() );
 370         }
 371 //      eDebug("boundBox left = %i, top = %i, right = %i, bottom = %i", boundBox.left(), boundBox.top(), boundBox.right(), boundBox.bottom() );
 372         if ( glyphs.size() )
 373                 bboxValid=1;
 374 }
 375
 376 void eTextPara::newLine(int flags)
 377 {
 378         if (maximum.width()<cursor.x())
 379                 maximum.setWidth(cursor.x());
 380         cursor.setX(left);
 381         previous=0;
 382         int linegap=current_face->size->metrics.height-(current_face->size->metrics.ascender+current_face->size->metrics.descender);
 383         cursor+=ePoint(0, (current_face->size->metrics.ascender+current_face->size->metrics.descender+linegap*1/2)>>6);
 384         if (maximum.height()<cursor.y())
 385                 maximum.setHeight(cursor.y());
 386         previous=0;
 387 }
 388
 389 eTextPara::~eTextPara()
 390 {
 391         clear();
 392 }
 393
 394 void eTextPara::setFont(const gFont *font)
 395 {
 396         ePtr<Font> fnt, replacement;
 397         fontRenderClass::getInstance()->getFont(fnt, font->family.c_str(), font->pointSize);
 398         if (!fnt)
 399                 eWarning("FONT '%s' MISSING!", font->family.c_str());
 400         fontRenderClass::getInstance()->getFont(replacement, replacement_facename.c_str(), font->pointSize);
 401         setFont(fnt, replacement);
 402 }
 403
 404 std::string eTextPara::replacement_facename;
 405
 406 void eTextPara::setFont(Font *fnt, Font *replacement)
 407 {
 408         if (!fnt)
 409                 return;
 410         current_font=fnt;
 411         replacement_font=replacement;
 412         singleLock s(ftlock);
 413
 414                         // we ask for replacment_font first becauseof the cache
 415         if (replacement_font)
 416         {
 417                 if (FTC_Manager_Lookup_Size(fontRenderClass::instance->cacheManager,
 418                                 &replacement_font->font.font, &replacement_face,
 419                                 &replacement_font->size)<0)
 420                 {
 421                         eDebug("FTC_Manager_Lookup_Size failed!");
 422                         return;
 423                 }
 424         }
 425         if (current_font)
 426         {
 427                 if (FTC_Manager_Lookup_Size(fontRenderClass::instance->cacheManager, &current_font->font.font, &current_face, &current_font->size)<0)
 428                 {
 429                         eDebug("FTC_Manager_Lookup_Size failed!");
 430                         return;
 431                 }
 432         }
 433         cache_current_font=&current_font->font.font;
 434         previous=0;
 435         use_kerning=FT_HAS_KERNING(current_face);
 436 }
 437
 438 void
 439 shape (std::vector<unsigned long> &string, const std::vector<unsigned long> &text);
 440
 441 int eTextPara::renderString(const std::string &string, int rflags)
 442 {
 443         singleLock s(ftlock);
 444
 445         if (!current_font)
 446                 return -1;
 447
 448         if (cursor.y()==-1)
 449         {
 450                 cursor=ePoint(area.x(), area.y()+(current_face->size->metrics.ascender>>6));
 451                 left=cursor.x();
 452         }
 453
 454         if (&current_font->font.font != cache_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 -1;
 460                 }
 461                 cache_current_font=&current_font->font.font;
 462         }
 463
 464         std::vector<unsigned long> uc_string, uc_visual;
 465         uc_string.reserve(string.length());
 466
 467         std::string::const_iterator p(string.begin());
 468
 469         while(p != string.end())
 470         {
 471                 unsigned int unicode=(unsigned char)*p++;
 472
 473                 if (unicode & 0x80) // we have (hopefully) UTF8 here, and we assume that the encoding is VALID
 474                 {
 475                         if ((unicode & 0xE0)==0xC0) // two bytes
 476                         {
 477                                 unicode&=0x1F;
 478                                 unicode<<=6;
 479                                 if (p != string.end())
 480                                         unicode|=(*p++)&0x3F;
 481                         } else if ((unicode & 0xF0)==0xE0) // three bytes
 482                         {
 483                                 unicode&=0x0F;
 484                                 unicode<<=6;
 485                                 if (p != string.end())
 486                                         unicode|=(*p++)&0x3F;
 487                                 unicode<<=6;
 488                                 if (p != string.end())
 489                                         unicode|=(*p++)&0x3F;
 490                         } else if ((unicode & 0xF8)==0xF0) // four bytes
 491                         {
 492                                 unicode&=0x07;
 493                                 unicode<<=6;
 494                                 if (p != string.end())
 495                                         unicode|=(*p++)&0x3F;
 496                                 unicode<<=6;
 497                                 if (p != string.end())
 498                                         unicode|=(*p++)&0x3F;
 499                                 unicode<<=6;
 500                                 if (p != string.end())
 501                                         unicode|=(*p++)&0x3F;
 502                         }
 503                 }
 504                 uc_string.push_back(unicode);
 505         }
 506
 507         std::vector<unsigned long> uc_shape;
 508
 509                 // character -> glyph conversion
 510         shape(uc_shape, uc_string);
 511
 512                 // now do the usual logical->visual reordering
 513 #ifdef HAVE_FRIBIDI
 514         FriBidiCharType dir=FRIBIDI_TYPE_ON;
 515         {
 516                 int size=uc_shape.size();
 517                 uc_visual.resize(size);
 518                 // gaaanz lahm, aber anders geht das leider nicht, sorry.
 519                 FriBidiChar array[size], target[size];
 520                 std::copy(uc_shape.begin(), uc_shape.end(), array);
 521                 fribidi_log2vis(array, size, &dir, target, 0, 0, 0);
 522                 uc_visual.assign(target, target+size);
 523         }
 524 #else
 525         uc_visual=uc_shape;
 526 #endif
 527
 528         glyphs.reserve(uc_visual.size());
 529
 530         int nextflags = 0;
 531
 532         for (std::vector<unsigned long>::const_iterator i(uc_visual.begin());
 533                 i != uc_visual.end(); ++i)
 534         {
 535                 int isprintable=1;
 536                 int flags = nextflags;
 537                 nextflags = 0;
 538                 if (!(rflags&RS_DIRECT))
 539                 {
 540                         switch (*i)
 541                         {
 542                         case '\\':
 543                         {
 544                                 unsigned long c = *(i+1);
 545                                 switch (c)
 546                                 {
 547                                         case 'n':
 548                                                 i++;
 549                                                 goto newline;
 550                                         case 't':
 551                                                 i++;
 552                                                 goto tab;
 553                                         case 'r':
 554                                                 i++;
 555                                                 goto nprint;
 556                                         default:
 557                                         ;
 558                                 }
 559                                 break;
 560                         }
 561                         case '\t':
 562 tab:            isprintable=0;
 563                                 cursor+=ePoint(current_font->tabwidth, 0);
 564                                 cursor-=ePoint(cursor.x()%current_font->tabwidth, 0);
 565                                 break;
 566                         case 0x8A:
 567                         case 0xE08A:
 568                         case '\n':
 569 newline:isprintable=0;
 570                                 newLine(rflags);
 571                                 nextflags|=GS_ISFIRST;
 572                                 break;
 573                         case '\r':
 574                         case 0x86: case 0xE086:
 575                         case 0x87: case 0xE087:
 576 nprint: isprintable=0;
 577                                 break;
 578                         case ' ':
 579                                 flags|=GS_ISSPACE;
 580                         default:
 581                                 break;
 582                         }
 583                 }
 584                 if (isprintable)
 585                 {
 586                         FT_UInt index;
 587
 588                         index=(rflags&RS_DIRECT)? *i : FT_Get_Char_Index(current_face, *i);
 589
 590                         if (!index)
 591                         {
 592                                 if (replacement_face)
 593                                         index=(rflags&RS_DIRECT)? *i : FT_Get_Char_Index(replacement_face, *i);
 594
 595                                 if (!index)
 596                                         eDebug("unicode %d ('%c') not present", *i, *i);
 597                                 else
 598                                         appendGlyph(replacement_font, replacement_face, index, flags, rflags);
 599                         } else
 600                                 appendGlyph(current_font, current_face, index, flags, rflags);
 601                 }
 602         }
 603         bboxValid=false;
 604         calc_bbox();
 605 #ifdef HAVE_FRIBIDI
 606         if (dir & FRIBIDI_MASK_RTL)
 607                 realign(dirRight);
 608 #endif
 609         return 0;
 610 }
 611
 612 void eTextPara::blit(gDC &dc, const ePoint &offset, const gRGB &background, const gRGB &foreground)
 613 {
 614         singleLock s(ftlock);
 615
 616         if (!current_font)
 617                 return;
 618
 619         if (&current_font->font.font != cache_current_font)
 620         {
 621                 if (FTC_Manager_Lookup_Size(fontRenderClass::instance->cacheManager, &current_font->font.font, &current_face, &current_font->size)<0)
 622                 {
 623                         eDebug("FTC_Manager_Lookup_Size failed!");
 624                         return;
 625                 }
 626                 cache_current_font=&current_font->font.font;
 627         }
 628
 629         ePtr<gPixmap> target;
 630         dc.getPixmap(target);
 631         gSurface *surface = target->surface;
 632
 633         register int opcode;
 634
 635         gColor *lookup8, lookup8_invert[16];
 636         gColor *lookup8_normal=0;
 637
 638         __u32 lookup32_normal[16], lookup32_invert[16], *lookup32;
 639
 640         if (surface->bpp == 8)
 641         {
 642                 if (surface->clut.data)
 643                 {
 644                         lookup8_normal=getColor(surface->clut, background, foreground).lookup;
 645
 646                         int i;
 647                         for (i=0; i<16; ++i)
 648                                 lookup8_invert[i] = lookup8_normal[i^0xF];
 649
 650                         opcode=0;
 651                 } else
 652                         opcode=1;
 653         } else if (surface->bpp == 32)
 654         {
 655                 opcode=3;
 656                 if (surface->clut.data)
 657                 {
 658                         lookup8=getColor(surface->clut, background, foreground).lookup;
 659                         for (int i=0; i<16; ++i)
 660                                 lookup32_normal[i]=((surface->clut.data[lookup8[i]].a<<24)|
 661                                         (surface->clut.data[lookup8[i]].r<<16)|
 662                                         (surface->clut.data[lookup8[i]].g<<8)|
 663                                         (surface->clut.data[lookup8[i]].b))^0xFF000000;
 664                 } else
 665                 {
 666                         for (int i=0; i<16; ++i)
 667                                 lookup32_normal[i]=(0x010101*i)|0xFF000000;
 668                 }
 669                 for (int i=0; i<16; ++i)
 670                         lookup32_invert[i]=lookup32_normal[i^0xF];
 671         } else
 672         {
 673                 eWarning("can't render to %dbpp", surface->bpp);
 674                 return;
 675         }
 676
 677         gRegion area(eRect(0, 0, surface->x, surface->y));
 678         gRegion clip = dc.getClip() & area;
 679
 680         int buffer_stride=surface->stride;
 681
 682         for (glyphString::iterator i(glyphs.begin()); i != glyphs.end(); ++i)
 683         {
 684                 if (!(i->flags & GS_INVERT))
 685                 {
 686                         lookup8 = lookup8_normal;
 687                         lookup32 = lookup32_normal;
 688                 } else
 689                 {
 690                         lookup8 = lookup8_invert;
 691                         lookup32 = lookup32_invert;
 692                 }
 693
 694                 static FTC_SBit glyph_bitmap;
 695                 if (fontRenderClass::instance->getGlyphBitmap(&i->font->font, i->glyph_index, &glyph_bitmap))
 696                         continue;
 697                 int rx=i->x+glyph_bitmap->left + offset.x();
 698                 int ry=i->y-glyph_bitmap->top  + offset.y();
 699
 700                 __u8 *d=(__u8*)(surface->data)+buffer_stride*ry+rx*surface->bypp;
 701                 __u8 *s=glyph_bitmap->buffer;
 702                 register int sx=glyph_bitmap->width;
 703                 int sy=glyph_bitmap->height;
 704                 if ((sy+ry) >= clip.extends.bottom())
 705                         sy=clip.extends.bottom()-ry;
 706                 if ((sx+rx) >= clip.extends.right())
 707                         sx=clip.extends.right()-rx;
 708                 if (rx < clip.extends.left())
 709                 {
 710                         int diff=clip.extends.left()-rx;
 711                         s+=diff;
 712                         sx-=diff;
 713                         rx+=diff;
 714                         d+=diff*surface->bypp;
 715                 }
 716                 if (ry < clip.extends.top())
 717                 {
 718                         int diff=clip.extends.top()-ry;
 719                         s+=diff*glyph_bitmap->pitch;
 720                         sy-=diff;
 721                         ry+=diff;
 722                         d+=diff*buffer_stride;
 723                 }
 724                 if (sx>0)
 725                         for (int ay=0; ay<sy; ay++)
 726                         {
 727                                 if (!opcode)            // 4bit lookup to 8bit
 728                                 {
 729                                         register __u8 *td=d;
 730                                         register int ax;
 731
 732                                         for (ax=0; ax<sx; ax++)
 733                                         {
 734                                                 register int b=(*s++)>>4;
 735                                                 if(b)
 736                                                         *td++=lookup8[b];
 737                                                 else
 738                                                         td++;
 739                                         }
 740                                 } else if (opcode == 1) // 8bit direct
 741                                 {
 742                                         register __u8 *td=d;
 743                                         register int ax;
 744                                         for (ax=0; ax<sx; ax++)
 745                                         {
 746                                                 register int b=*s++;
 747                                                 *td++^=b;
 748                                         }
 749                                 } else
 750                                 {
 751                                         register __u32 *td=(__u32*)d;
 752                                         register int ax;
 753                                         for (ax=0; ax<sx; ax++)
 754                                         {
 755                                                 register int b=(*s++)>>4;
 756                                                 if(b)
 757                                                         *td++=lookup32[b];
 758                                                 else
 759                                                         td++;
 760                                         }
 761                                 }
 762                                 s+=glyph_bitmap->pitch-sx;
 763                                 d+=buffer_stride;
 764                         }
 765         }
 766 }
 767
 768 void eTextPara::realign(int dir)        // der code hier ist ein wenig merkwuerdig.
 769 {
 770         glyphString::iterator begin(glyphs.begin()), c(glyphs.begin()), end(glyphs.begin()), last;
 771         if (dir==dirLeft)
 772                 return;
 773         while (c != glyphs.end())
 774         {
 775                 int linelength=0;
 776                 int numspaces=0, num=0;
 777                 begin=end;
 778
 779                 ASSERT( end != glyphs.end());
 780
 781                         // zeilenende suchen
 782                 do {
 783                         last=end;
 784                         ++end;
 785                 } while ((end != glyphs.end()) && (!(end->flags&GS_ISFIRST)));
 786                         // end zeigt jetzt auf begin der naechsten zeile
 787
 788                 for (c=begin; c!=end; ++c)
 789                 {
 790                                 // space am zeilenende skippen
 791                         if ((c==last) && (c->flags&GS_ISSPACE))
 792                                 continue;
 793
 794                         if (c->flags&GS_ISSPACE)
 795                                 numspaces++;
 796                         linelength+=c->w;
 797                         num++;
 798                 }
 799
 800                 if (!num)               // line mit nur einem space
 801                         continue;
 802
 803                 switch (dir)
 804                 {
 805                 case dirRight:
 806                 case dirCenter:
 807                 {
 808                         int offset=area.width()-linelength;
 809                         if (dir==dirCenter)
 810                                 offset/=2;
 811                         offset+=area.left();
 812                         while (begin != end)
 813                         {
 814                                 begin->bbox.moveBy(offset-begin->x,0);
 815                                 begin->x=offset;
 816                                 offset+=begin->w;
 817                                 ++begin;
 818                         }
 819                         break;
 820                 }
 821                 case dirBlock:
 822                 {
 823                         if (end == glyphs.end())                // letzte zeile linksbuendig lassen
 824                                 continue;
 825                         int spacemode;
 826                         if (numspaces)
 827                                 spacemode=1;
 828                         else
 829                                 spacemode=0;
 830                         if ((!spacemode) && (num<2))
 831                                 break;
 832                         int off=(area.width()-linelength)*256/(spacemode?numspaces:(num-1));
 833                         int curoff=0;
 834                         while (begin != end)
 835                         {
 836                                 int doadd=0;
 837                                 if ((!spacemode) || (begin->flags&GS_ISSPACE))
 838                                         doadd=1;
 839                                 begin->x+=curoff>>8;
 840                                 begin->bbox.moveBy(curoff>>8,0);
 841                                 if (doadd)
 842                                         curoff+=off;
 843                                 ++begin;
 844                         }
 845                         break;
 846                 }
 847                 }
 848         }
 849         bboxValid=false;
 850         calc_bbox();
 851 }
 852
 853 void eTextPara::clear()
 854 {
 855         singleLock s(ftlock);
 856
 857         current_font = 0;
 858         replacement_font = 0;
 859
 860         glyphs.clear();
 861 }
 862
 863 eAutoInitP0<fontRenderClass> init_fontRenderClass(eAutoInitNumbers::graphic-1, "Font Render Class");